diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8cfe9e89e0..7227b04862 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -424,13 +424,9 @@ set(ZIG_STAGE2_SOURCES
     "${CMAKE_SOURCE_DIR}/lib/std/meta/trait.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/multi_array_list.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/os.zig"
-    "${CMAKE_SOURCE_DIR}/lib/std/os/bits.zig"
-    "${CMAKE_SOURCE_DIR}/lib/std/os/bits/linux.zig"
-    "${CMAKE_SOURCE_DIR}/lib/std/os/bits/linux/errno/generic.zig"
-    "${CMAKE_SOURCE_DIR}/lib/std/os/bits/linux/netlink.zig"
-    "${CMAKE_SOURCE_DIR}/lib/std/os/bits/linux/prctl.zig"
-    "${CMAKE_SOURCE_DIR}/lib/std/os/bits/linux/securebits.zig"
-    "${CMAKE_SOURCE_DIR}/lib/std/os/bits/linux/x86_64.zig"
+    "${CMAKE_SOURCE_DIR}/lib/std/os/linux.zig"
+    "${CMAKE_SOURCE_DIR}/lib/std/os/linux/errno/generic.zig"
+    "${CMAKE_SOURCE_DIR}/lib/std/os/linux/x86_64.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/os/linux.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/os/linux/io_uring.zig"
     "${CMAKE_SOURCE_DIR}/lib/std/os/linux/x86_64.zig"
diff --git a/lib/std/Thread/Mutex.zig b/lib/std/Thread/Mutex.zig
index ee54a1582b..a337809a18 100644
--- a/lib/std/Thread/Mutex.zig
+++ b/lib/std/Thread/Mutex.zig
@@ -133,7 +133,7 @@ pub const AtomicMutex = struct {
                 .linux => {
                     switch (linux.getErrno(linux.futex_wait(
                         @ptrCast(*const i32, &m.state),
-                        linux.FUTEX_PRIVATE_FLAG | linux.FUTEX_WAIT,
+                        linux.FUTEX.PRIVATE_FLAG | linux.FUTEX.WAIT,
                         @enumToInt(new_state),
                         null,
                     ))) {
@@ -155,7 +155,7 @@ pub const AtomicMutex = struct {
             .linux => {
                 switch (linux.getErrno(linux.futex_wake(
                     @ptrCast(*const i32, &m.state),
-                    linux.FUTEX_PRIVATE_FLAG | linux.FUTEX_WAKE,
+                    linux.FUTEX.PRIVATE_FLAG | linux.FUTEX.WAKE,
                     1,
                 ))) {
                     .SUCCESS => {},
diff --git a/lib/std/Thread/StaticResetEvent.zig b/lib/std/Thread/StaticResetEvent.zig
index d779a4de9e..29fdf3e489 100644
--- a/lib/std/Thread/StaticResetEvent.zig
+++ b/lib/std/Thread/StaticResetEvent.zig
@@ -194,7 +194,7 @@ pub const AtomicEvent = struct {
             _ = wake_count;
             const waiting = std.math.maxInt(i32); // wake_count
             const ptr = @ptrCast(*const i32, waiters);
-            const rc = linux.futex_wake(ptr, linux.FUTEX_WAKE | linux.FUTEX_PRIVATE_FLAG, waiting);
+            const rc = linux.futex_wake(ptr, linux.FUTEX.WAKE | linux.FUTEX.PRIVATE_FLAG, waiting);
             assert(linux.getErrno(rc) == .SUCCESS);
         }
 
@@ -213,7 +213,7 @@ pub const AtomicEvent = struct {
                     return;
                 const expected = @intCast(i32, waiting);
                 const ptr = @ptrCast(*const i32, waiters);
-                const rc = linux.futex_wait(ptr, linux.FUTEX_WAIT | linux.FUTEX_PRIVATE_FLAG, expected, ts_ptr);
+                const rc = linux.futex_wait(ptr, linux.FUTEX.WAIT | linux.FUTEX.PRIVATE_FLAG, expected, ts_ptr);
                 switch (linux.getErrno(rc)) {
                     .SUCCESS => continue,
                     .TIMEDOUT => return error.TimedOut,
diff --git a/lib/std/c.zig b/lib/std/c.zig
index 0ad69f873f..f84e76cfb5 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -10,8 +10,6 @@ test {
     _ = tokenizer;
 }
 
-pub usingnamespace @import("os/bits.zig");
-
 pub usingnamespace switch (std.Target.current.os.tag) {
     .linux => @import("c/linux.zig"),
     .windows => @import("c/windows.zig"),
diff --git a/lib/std/c/darwin.zig b/lib/std/c/darwin.zig
index 7fa07719a8..fe074554f4 100644
--- a/lib/std/c/darwin.zig
+++ b/lib/std/c/darwin.zig
@@ -4,8 +4,6 @@ const builtin = @import("builtin");
 const macho = std.macho;
 const native_arch = builtin.target.cpu.arch;
 
-usingnamespace @import("../os/bits.zig");
-
 extern "c" fn __error() *c_int;
 pub extern "c" fn NSVersionOfRunTimeLibrary(library_name: [*:0]const u8) u32;
 pub extern "c" fn _NSGetExecutablePath(buf: [*:0]u8, bufsize: *u32) c_int;
diff --git a/lib/std/c/wasi.zig b/lib/std/c/wasi.zig
index 339bdcd127..350231da2e 100644
--- a/lib/std/c/wasi.zig
+++ b/lib/std/c/wasi.zig
@@ -1,5 +1,3 @@
-usingnamespace @import("../os/bits.zig");
-
 extern threadlocal var errno: c_int;
 
 pub fn _errno() *c_int {
diff --git a/lib/std/debug.zig b/lib/std/debug.zig
index 4b715f2b14..540586a38f 100644
--- a/lib/std/debug.zig
+++ b/lib/std/debug.zig
@@ -948,8 +948,8 @@ fn mapWholeFile(file: File) ![]align(mem.page_size) const u8 {
         const mapped_mem = try os.mmap(
             null,
             file_len,
-            os.PROT_READ,
-            os.MAP_SHARED,
+            os.PROT.READ,
+            os.MAP.SHARED,
             file.handle,
             0,
         );
@@ -1498,12 +1498,12 @@ pub fn attachSegfaultHandler() void {
     var act = os.Sigaction{
         .handler = .{ .sigaction = handleSegfaultLinux },
         .mask = os.empty_sigset,
-        .flags = (os.SA_SIGINFO | os.SA_RESTART | os.SA_RESETHAND),
+        .flags = (os.SA.SIGINFO | os.SA.RESTART | os.SA.RESETHAND),
     };
 
-    os.sigaction(os.SIGSEGV, &act, null);
-    os.sigaction(os.SIGILL, &act, null);
-    os.sigaction(os.SIGBUS, &act, null);
+    os.sigaction(os.SIG.SEGV, &act, null);
+    os.sigaction(os.SIG.ILL, &act, null);
+    os.sigaction(os.SIG.BUS, &act, null);
 }
 
 fn resetSegfaultHandler() void {
@@ -1515,13 +1515,13 @@ fn resetSegfaultHandler() void {
         return;
     }
     var act = os.Sigaction{
-        .handler = .{ .sigaction = os.SIG_DFL },
+        .handler = .{ .sigaction = os.SIG.DFL },
         .mask = os.empty_sigset,
         .flags = 0,
     };
-    os.sigaction(os.SIGSEGV, &act, null);
-    os.sigaction(os.SIGILL, &act, null);
-    os.sigaction(os.SIGBUS, &act, null);
+    os.sigaction(os.SIG.SEGV, &act, null);
+    os.sigaction(os.SIG.ILL, &act, null);
+    os.sigaction(os.SIG.BUS, &act, null);
 }
 
 fn handleSegfaultLinux(sig: i32, info: *const os.siginfo_t, ctx_ptr: ?*const c_void) callconv(.C) noreturn {
@@ -1542,9 +1542,9 @@ fn handleSegfaultLinux(sig: i32, info: *const os.siginfo_t, ctx_ptr: ?*const c_v
     nosuspend {
         const stderr = io.getStdErr().writer();
         _ = switch (sig) {
-            os.SIGSEGV => stderr.print("Segmentation fault at address 0x{x}\n", .{addr}),
-            os.SIGILL => stderr.print("Illegal instruction at address 0x{x}\n", .{addr}),
-            os.SIGBUS => stderr.print("Bus error at address 0x{x}\n", .{addr}),
+            os.SIG.SEGV => stderr.print("Segmentation fault at address 0x{x}\n", .{addr}),
+            os.SIG.ILL => stderr.print("Illegal instruction at address 0x{x}\n", .{addr}),
+            os.SIG.BUS => stderr.print("Bus error at address 0x{x}\n", .{addr}),
             else => unreachable,
         } catch os.abort();
     }
@@ -1552,20 +1552,20 @@ fn handleSegfaultLinux(sig: i32, info: *const os.siginfo_t, ctx_ptr: ?*const c_v
     switch (native_arch) {
         .i386 => {
             const ctx = @ptrCast(*const os.ucontext_t, @alignCast(@alignOf(os.ucontext_t), ctx_ptr));
-            const ip = @intCast(usize, ctx.mcontext.gregs[os.REG_EIP]);
-            const bp = @intCast(usize, ctx.mcontext.gregs[os.REG_EBP]);
+            const ip = @intCast(usize, ctx.mcontext.gregs[os.REG.EIP]);
+            const bp = @intCast(usize, ctx.mcontext.gregs[os.REG.EBP]);
             dumpStackTraceFromBase(bp, ip);
         },
         .x86_64 => {
             const ctx = @ptrCast(*const os.ucontext_t, @alignCast(@alignOf(os.ucontext_t), ctx_ptr));
             const ip = switch (native_os) {
-                .linux, .netbsd => @intCast(usize, ctx.mcontext.gregs[os.REG_RIP]),
+                .linux, .netbsd => @intCast(usize, ctx.mcontext.gregs[os.REG.RIP]),
                 .freebsd => @intCast(usize, ctx.mcontext.rip),
                 .openbsd => @intCast(usize, ctx.sc_rip),
                 else => unreachable,
             };
             const bp = switch (native_os) {
-                .linux, .netbsd => @intCast(usize, ctx.mcontext.gregs[os.REG_RBP]),
+                .linux, .netbsd => @intCast(usize, ctx.mcontext.gregs[os.REG.RBP]),
                 .openbsd => @intCast(usize, ctx.sc_rbp),
                 .freebsd => @intCast(usize, ctx.mcontext.rbp),
                 else => unreachable,
diff --git a/lib/std/fs.zig b/lib/std/fs.zig
index 1e02c0e805..3caf64b7af 100644
--- a/lib/std/fs.zig
+++ b/lib/std/fs.zig
@@ -907,35 +907,35 @@ pub const Dir = struct {
             return self.openFileW(path_w.span(), flags);
         }
 
-        var os_flags: u32 = os.O_CLOEXEC;
+        var os_flags: u32 = os.O.CLOEXEC;
         // Use the O_ locking flags if the os supports them to acquire the lock
         // atomically.
-        const has_flock_open_flags = @hasDecl(os, "O_EXLOCK");
+        const has_flock_open_flags = @hasDecl(os.O, "EXLOCK");
         if (has_flock_open_flags) {
             // Note that the O_NONBLOCK flag is removed after the openat() call
             // is successful.
             const nonblocking_lock_flag: u32 = if (flags.lock_nonblocking)
-                os.O_NONBLOCK
+                os.O.NONBLOCK
             else
                 0;
             os_flags |= switch (flags.lock) {
                 .None => @as(u32, 0),
-                .Shared => os.O_SHLOCK | nonblocking_lock_flag,
-                .Exclusive => os.O_EXLOCK | nonblocking_lock_flag,
+                .Shared => os.O.SHLOCK | nonblocking_lock_flag,
+                .Exclusive => os.O.EXLOCK | nonblocking_lock_flag,
             };
         }
-        if (@hasDecl(os, "O_LARGEFILE")) {
-            os_flags |= os.O_LARGEFILE;
+        if (@hasDecl(os.O, "LARGEFILE")) {
+            os_flags |= os.O.LARGEFILE;
         }
         if (!flags.allow_ctty) {
-            os_flags |= os.O_NOCTTY;
+            os_flags |= os.O.NOCTTY;
         }
         os_flags |= if (flags.write and flags.read)
-            @as(u32, os.O_RDWR)
+            @as(u32, os.O.RDWR)
         else if (flags.write)
-            @as(u32, os.O_WRONLY)
+            @as(u32, os.O.WRONLY)
         else
-            @as(u32, os.O_RDONLY);
+            @as(u32, os.O.RDONLY);
         const fd = if (flags.intended_io_mode != .blocking)
             try std.event.Loop.instance.?.openatZ(self.fd, sub_path, os_flags, 0)
         else
@@ -947,11 +947,11 @@ pub const Dir = struct {
         if (builtin.target.os.tag != .wasi) {
             if (!has_flock_open_flags and flags.lock != .None) {
                 // TODO: integrate async I/O
-                const lock_nonblocking = if (flags.lock_nonblocking) os.LOCK_NB else @as(i32, 0);
+                const lock_nonblocking = if (flags.lock_nonblocking) os.LOCK.NB else @as(i32, 0);
                 try os.flock(fd, switch (flags.lock) {
                     .None => unreachable,
-                    .Shared => os.LOCK_SH | lock_nonblocking,
-                    .Exclusive => os.LOCK_EX | lock_nonblocking,
+                    .Shared => os.LOCK.SH | lock_nonblocking,
+                    .Exclusive => os.LOCK.EX | lock_nonblocking,
                 });
             }
         }
@@ -963,7 +963,7 @@ pub const Dir = struct {
                 error.PermissionDenied => unreachable,
                 else => |e| return e,
             };
-            fl_flags &= ~@as(usize, os.O_NONBLOCK);
+            fl_flags &= ~@as(usize, os.O.NONBLOCK);
             _ = os.fcntl(fd, os.F_SETFL, fl_flags) catch |err| switch (err) {
                 error.FileBusy => unreachable,
                 error.Locked => unreachable,
@@ -1038,7 +1038,7 @@ pub const Dir = struct {
     /// Same as `createFile` but WASI only.
     pub fn createFileWasi(self: Dir, sub_path: []const u8, flags: File.CreateFlags) File.OpenError!File {
         const w = os.wasi;
-        var oflags = w.O_CREAT;
+        var oflags = w.O.CREAT;
         var base: w.rights_t = w.RIGHT_FD_WRITE |
             w.RIGHT_FD_DATASYNC |
             w.RIGHT_FD_SEEK |
@@ -1054,10 +1054,10 @@ pub const Dir = struct {
             base |= w.RIGHT_FD_READ;
         }
         if (flags.truncate) {
-            oflags |= w.O_TRUNC;
+            oflags |= w.O.TRUNC;
         }
         if (flags.exclusive) {
-            oflags |= w.O_EXCL;
+            oflags |= w.O.EXCL;
         }
         const fd = try os.openatWasi(self.fd, sub_path, 0x0, oflags, 0x0, base, 0x0);
         return File{ .handle = fd };
@@ -1072,24 +1072,24 @@ pub const Dir = struct {
 
         // Use the O_ locking flags if the os supports them to acquire the lock
         // atomically.
-        const has_flock_open_flags = @hasDecl(os, "O_EXLOCK");
+        const has_flock_open_flags = @hasDecl(os.O, "EXLOCK");
         // Note that the O_NONBLOCK flag is removed after the openat() call
         // is successful.
         const nonblocking_lock_flag: u32 = if (has_flock_open_flags and flags.lock_nonblocking)
-            os.O_NONBLOCK
+            os.O.NONBLOCK
         else
             0;
         const lock_flag: u32 = if (has_flock_open_flags) switch (flags.lock) {
             .None => @as(u32, 0),
-            .Shared => os.O_SHLOCK | nonblocking_lock_flag,
-            .Exclusive => os.O_EXLOCK | nonblocking_lock_flag,
+            .Shared => os.O.SHLOCK | nonblocking_lock_flag,
+            .Exclusive => os.O.EXLOCK | nonblocking_lock_flag,
         } else 0;
 
-        const O_LARGEFILE = if (@hasDecl(os, "O_LARGEFILE")) os.O_LARGEFILE else 0;
-        const os_flags = lock_flag | O_LARGEFILE | os.O_CREAT | os.O_CLOEXEC |
-            (if (flags.truncate) @as(u32, os.O_TRUNC) else 0) |
-            (if (flags.read) @as(u32, os.O_RDWR) else os.O_WRONLY) |
-            (if (flags.exclusive) @as(u32, os.O_EXCL) else 0);
+        const O_LARGEFILE = if (@hasDecl(os.O, "LARGEFILE")) os.O.LARGEFILE else 0;
+        const os_flags = lock_flag | O_LARGEFILE | os.O.CREAT | os.O.CLOEXEC |
+            (if (flags.truncate) @as(u32, os.O.TRUNC) else 0) |
+            (if (flags.read) @as(u32, os.O.RDWR) else os.O.WRONLY) |
+            (if (flags.exclusive) @as(u32, os.O.EXCL) else 0);
         const fd = if (flags.intended_io_mode != .blocking)
             try std.event.Loop.instance.?.openatZ(self.fd, sub_path_c, os_flags, flags.mode)
         else
@@ -1101,11 +1101,11 @@ pub const Dir = struct {
         if (builtin.target.os.tag != .wasi) {
             if (!has_flock_open_flags and flags.lock != .None) {
                 // TODO: integrate async I/O
-                const lock_nonblocking = if (flags.lock_nonblocking) os.LOCK_NB else @as(i32, 0);
+                const lock_nonblocking = if (flags.lock_nonblocking) os.LOCK.NB else @as(i32, 0);
                 try os.flock(fd, switch (flags.lock) {
                     .None => unreachable,
-                    .Shared => os.LOCK_SH | lock_nonblocking,
-                    .Exclusive => os.LOCK_EX | lock_nonblocking,
+                    .Shared => os.LOCK.SH | lock_nonblocking,
+                    .Exclusive => os.LOCK.EX | lock_nonblocking,
                 });
             }
         }
@@ -1117,7 +1117,7 @@ pub const Dir = struct {
                 error.PermissionDenied => unreachable,
                 else => |e| return e,
             };
-            fl_flags &= ~@as(usize, os.O_NONBLOCK);
+            fl_flags &= ~@as(usize, os.O.NONBLOCK);
             _ = os.fcntl(fd, os.F_SETFL, fl_flags) catch |err| switch (err) {
                 error.FileBusy => unreachable,
                 error.Locked => unreachable,
@@ -1262,7 +1262,7 @@ pub const Dir = struct {
             return self.realpathW(pathname_w.span(), out_buffer);
         }
 
-        const flags = if (builtin.os.tag == .linux) os.O_PATH | os.O_NONBLOCK | os.O_CLOEXEC else os.O_NONBLOCK | os.O_CLOEXEC;
+        const flags = if (builtin.os.tag == .linux) os.O.PATH | os.O.NONBLOCK | os.O.CLOEXEC else os.O.NONBLOCK | os.O.CLOEXEC;
         const fd = os.openatZ(self.fd, pathname, flags, 0) catch |err| switch (err) {
             error.FileLocksNotSupported => unreachable,
             else => |e| return e,
@@ -1423,7 +1423,7 @@ pub const Dir = struct {
         // TODO do we really need all the rights here?
         const inheriting: w.rights_t = w.RIGHT_ALL ^ w.RIGHT_SOCK_SHUTDOWN;
 
-        const result = os.openatWasi(self.fd, sub_path, symlink_flags, w.O_DIRECTORY, 0x0, base, inheriting);
+        const result = os.openatWasi(self.fd, sub_path, symlink_flags, w.O.DIRECTORY, 0x0, base, inheriting);
         const fd = result catch |err| switch (err) {
             error.FileTooBig => unreachable, // can't happen for directories
             error.IsDir => unreachable, // we're providing O_DIRECTORY
@@ -1442,12 +1442,12 @@ pub const Dir = struct {
             const sub_path_w = try os.windows.cStrToPrefixedFileW(sub_path_c);
             return self.openDirW(sub_path_w.span().ptr, args);
         }
-        const symlink_flags: u32 = if (args.no_follow) os.O_NOFOLLOW else 0x0;
+        const symlink_flags: u32 = if (args.no_follow) os.O.NOFOLLOW else 0x0;
         if (!args.iterate) {
-            const O_PATH = if (@hasDecl(os, "O_PATH")) os.O_PATH else 0;
-            return self.openDirFlagsZ(sub_path_c, os.O_DIRECTORY | os.O_RDONLY | os.O_CLOEXEC | O_PATH | symlink_flags);
+            const O_PATH = if (@hasDecl(os.O, "PATH")) os.O.PATH else 0;
+            return self.openDirFlagsZ(sub_path_c, os.O.DIRECTORY | os.O.RDONLY | os.O.CLOEXEC | O_PATH | symlink_flags);
         } else {
-            return self.openDirFlagsZ(sub_path_c, os.O_DIRECTORY | os.O_RDONLY | os.O_CLOEXEC | symlink_flags);
+            return self.openDirFlagsZ(sub_path_c, os.O.DIRECTORY | os.O.RDONLY | os.O.CLOEXEC | symlink_flags);
         }
     }
 
@@ -2132,7 +2132,7 @@ pub fn cwd() Dir {
     } else if (builtin.os.tag == .wasi and !builtin.link_libc) {
         @compileError("WASI doesn't have a concept of cwd(); use std.fs.wasi.PreopenList to get available Dir handles instead");
     } else {
-        return Dir{ .fd = os.AT_FDCWD };
+        return Dir{ .fd = os.AT.FDCWD };
     }
 }
 
diff --git a/lib/std/fs/file.zig b/lib/std/fs/file.zig
index 1dd5e8ba98..a0374161d7 100644
--- a/lib/std/fs/file.zig
+++ b/lib/std/fs/file.zig
@@ -329,14 +329,14 @@ pub const File = struct {
                 os.FILETYPE_REGULAR_FILE => Kind.File,
                 os.FILETYPE_SOCKET_STREAM, os.FILETYPE_SOCKET_DGRAM => Kind.UnixDomainSocket,
                 else => Kind.Unknown,
-            } else switch (st.mode & os.S_IFMT) {
-                os.S_IFBLK => Kind.BlockDevice,
-                os.S_IFCHR => Kind.CharacterDevice,
-                os.S_IFDIR => Kind.Directory,
-                os.S_IFIFO => Kind.NamedPipe,
-                os.S_IFLNK => Kind.SymLink,
-                os.S_IFREG => Kind.File,
-                os.S_IFSOCK => Kind.UnixDomainSocket,
+            } else switch (st.mode & os.S.IFMT) {
+                os.S.IFBLK => Kind.BlockDevice,
+                os.S.IFCHR => Kind.CharacterDevice,
+                os.S.IFDIR => Kind.Directory,
+                os.S.IFIFO => Kind.NamedPipe,
+                os.S.IFLNK => Kind.SymLink,
+                os.S.IFREG => Kind.File,
+                os.S.IFSOCK => Kind.UnixDomainSocket,
                 else => Kind.Unknown,
             },
             .atime = @as(i128, atime.tv_sec) * std.time.ns_per_s + atime.tv_nsec,
diff --git a/lib/std/heap.zig b/lib/std/heap.zig
index 9032225b39..55c7b4ee70 100644
--- a/lib/std/heap.zig
+++ b/lib/std/heap.zig
@@ -304,8 +304,8 @@ const PageAllocator = struct {
         const slice = os.mmap(
             hint,
             alloc_len,
-            os.PROT_READ | os.PROT_WRITE,
-            os.MAP_PRIVATE | os.MAP_ANONYMOUS,
+            os.PROT.READ | os.PROT.WRITE,
+            os.MAP.PRIVATE | os.MAP.ANONYMOUS,
             -1,
             0,
         ) catch return error.OutOfMemory;
diff --git a/lib/std/os.zig b/lib/std/os.zig
index 294784c2bd..6b3daed049 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -16,7 +16,7 @@
 
 const root = @import("root");
 const std = @import("std.zig");
-const builtin = std.builtin;
+const builtin = @import("builtin");
 const assert = std.debug.assert;
 const math = std.math;
 const mem = std.mem;
@@ -24,12 +24,12 @@ const elf = std.elf;
 const dl = @import("dynamic_library.zig");
 const MAX_PATH_BYTES = std.fs.MAX_PATH_BYTES;
 
-pub const darwin = @import("os/darwin.zig");
-pub const dragonfly = @import("os/dragonfly.zig");
-pub const freebsd = @import("os/freebsd.zig");
-pub const haiku = @import("os/haiku.zig");
-pub const netbsd = @import("os/netbsd.zig");
-pub const openbsd = @import("os/openbsd.zig");
+pub const darwin = std.c;
+pub const dragonfly = std.c;
+pub const freebsd = std.c;
+pub const haiku = std.c;
+pub const netbsd = std.c;
+pub const openbsd = std.c;
 pub const linux = @import("os/linux.zig");
 pub const uefi = @import("os/uefi.zig");
 pub const wasi = @import("os/wasi.zig");
@@ -73,7 +73,102 @@ else switch (builtin.os.tag) {
     else => struct {},
 };
 
-pub usingnamespace @import("os/bits.zig");
+const bits = switch (builtin.os.tag) {
+    .macos, .ios, .tvos, .watchos => std.c,
+    .dragonfly => @import("os/bits/dragonfly.zig"),
+    .freebsd => @import("os/bits/freebsd.zig"),
+    .haiku => @import("os/bits/haiku.zig"),
+    .linux => linux,
+    .netbsd => @import("os/bits/netbsd.zig"),
+    .openbsd => @import("os/bits/openbsd.zig"),
+    .wasi => @import("os/bits/wasi.zig"),
+    .windows => @import("os/bits/windows.zig"),
+    else => struct {},
+};
+pub const E = bits.E;
+pub const ARCH = bits.ARCH;
+pub const Elf_Symndx = bits.Elf_Symndx;
+pub const F = bits.F;
+pub const Flock = bits.Flock;
+pub const LOCK = bits.LOCK;
+pub const MAP = bits.MAP;
+pub const MMAP2_UNIT = bits.MMAP2_UNIT;
+pub const O = bits.O;
+pub const REG = bits.REG;
+pub const SC = bits.SC;
+pub const SYS = bits.SYS;
+pub const VDSO = bits.VDSO;
+pub const blkcnt_t = bits.blkcnt_t;
+pub const blksize_t = bits.blksize_t;
+pub const dev_t = bits.dev_t;
+pub const ino_t = bits.ino_t;
+pub const kernel_stat = bits.kernel_stat;
+pub const libc_stat = bits.libc_stat;
+pub const mcontext_t = bits.mcontext_t;
+pub const mode_t = bits.mode_t;
+pub const msghdr = bits.msghdr;
+pub const msghdr_const = bits.msghdr_const;
+pub const nlink_t = bits.nlink_t;
+pub const off_t = bits.off_t;
+pub const time_t = bits.time_t;
+pub const timespec = bits.timespec;
+pub const timeval = bits.timeval;
+pub const timezone = bits.timezone;
+pub const ucontext_t = bits.ucontext_t;
+pub const user_desc = bits.user_desc;
+pub const pid_t = bits.pid_t;
+pub const fd_t = bits.fd_t;
+pub const uid_t = bits.uid_t;
+pub const gid_t = bits.gid_t;
+pub const clock_t = bits.clock_t;
+pub const NAME_MAX = bits.NAME_MAX;
+pub const PATH_MAX = bits.PATH_MAX;
+pub const IOV_MAX = bits.IOV_MAX;
+pub const MAX_ADDR_LEN = bits.MAX_ADDR_LEN;
+pub const STDIN_FILENO = bits.STDIN_FILENO;
+pub const STDOUT_FILENO = bits.STDIN_FILENO;
+pub const STDERR_FILENO = bits.STDIN_FILENO;
+pub const AT = bits.AT;
+pub const PROT = bits.PROT;
+pub const CLOCK = bits.CLOCK;
+pub const dl_phdr_info = bits.dl_phdr_info;
+pub const Sigaction = bits.Sigaction;
+pub const rlimit_resource = bits.rlimit_resource;
+pub const SIG = bits.SIG;
+pub const rlimit = bits.rlimit;
+pub const empty_sigset = bits.empty_sigset;
+pub const S = bits.S;
+pub const siginfo_t = bits.siginfo_t;
+pub const SA = bits.SA;
+
+pub const iovec = extern struct {
+    iov_base: [*]u8,
+    iov_len: usize,
+};
+
+pub const iovec_const = extern struct {
+    iov_base: [*]const u8,
+    iov_len: usize,
+};
+
+pub const LOG = struct {
+    /// system is unusable
+    pub const EMERG = 0;
+    /// action must be taken immediately
+    pub const ALERT = 1;
+    /// critical conditions
+    pub const CRIT = 2;
+    /// error conditions
+    pub const ERR = 3;
+    /// warning conditions
+    pub const WARNING = 4;
+    /// normal but significant condition
+    pub const NOTICE = 5;
+    /// informational
+    pub const INFO = 6;
+    /// debug-level messages
+    pub const DEBUG = 7;
+};
 
 pub const socket_t = if (builtin.os.tag == .windows) windows.ws2_32.SOCKET else fd_t;
 
@@ -136,7 +231,7 @@ pub fn getrandom(buffer: []u8) GetRandomError!void {
     if (builtin.os.tag == .linux or builtin.os.tag == .freebsd) {
         var buf = buffer;
         const use_c = builtin.os.tag != .linux or
-            std.c.versionCheck(builtin.Version{ .major = 2, .minor = 25, .patch = 0 }).ok;
+            std.c.versionCheck(std.builtin.Version{ .major = 2, .minor = 25, .patch = 0 }).ok;
 
         while (buf.len != 0) {
             const res = if (use_c) blk: {
@@ -210,11 +305,11 @@ pub fn abort() noreturn {
         windows.kernel32.ExitProcess(3);
     }
     if (!builtin.link_libc and builtin.os.tag == .linux) {
-        raise(SIGABRT) catch {};
+        raise(SIG.ABRT) catch {};
 
         // TODO the rest of the implementation of abort() from musl libc here
 
-        raise(SIGKILL) catch {};
+        raise(SIG.KILL) catch {};
         exit(127);
     }
     if (builtin.os.tag == .uefi) {
@@ -239,15 +334,15 @@ pub fn raise(sig: u8) RaiseError!void {
     }
 
     if (builtin.os.tag == .linux) {
-        var set: linux.sigset_t = undefined;
+        var set: bits.sigset_t = undefined;
         // block application signals
-        _ = linux.sigprocmask(SIG_BLOCK, &linux.app_mask, &set);
+        _ = linux.sigprocmask(SIG.BLOCK, &linux.app_mask, &set);
 
         const tid = linux.gettid();
         const rc = linux.tkill(tid, sig);
 
         // restore signal mask
-        _ = linux.sigprocmask(SIG_SETMASK, &set, null);
+        _ = linux.sigprocmask(SIG.SETMASK, &set, null);
 
         switch (errno(rc)) {
             .SUCCESS => return,
@@ -2676,7 +2771,7 @@ pub fn isatty(handle: fd_t) bool {
         while (true) {
             var wsz: linux.winsize = undefined;
             const fd = @bitCast(usize, @as(isize, handle));
-            const rc = linux.syscall3(.ioctl, fd, linux.TIOCGWINSZ, @ptrToInt(&wsz));
+            const rc = linux.syscall3(.ioctl, fd, linux.T.IOCGWINSZ, @ptrToInt(&wsz));
             switch (linux.getErrno(rc)) {
                 .SUCCESS => return true,
                 .INTR => continue,
@@ -4679,7 +4774,7 @@ pub fn clock_gettime(clk_id: i32, tp: *timespec) ClockGetTimeError!void {
         return;
     }
     if (std.Target.current.os.tag == .windows) {
-        if (clk_id == CLOCK_REALTIME) {
+        if (clk_id == CLOCK.REALTIME) {
             var ft: windows.FILETIME = undefined;
             windows.kernel32.GetSystemTimeAsFileTime(&ft);
             // FileTime has a granularity of 100 nanoseconds and uses the NTFS/Windows epoch.
@@ -4691,7 +4786,7 @@ pub fn clock_gettime(clk_id: i32, tp: *timespec) ClockGetTimeError!void {
             };
             return;
         } else {
-            // TODO POSIX implementation of CLOCK_MONOTONIC on Windows.
+            // TODO POSIX implementation of CLOCK.MONOTONIC on Windows.
             return error.UnsupportedClock;
         }
     }
@@ -4929,7 +5024,7 @@ pub fn res_mkquery(
 
     // Make a reasonably unpredictable id
     var ts: timespec = undefined;
-    clock_gettime(CLOCK_REALTIME, &ts) catch {};
+    clock_gettime(CLOCK.REALTIME, &ts) catch {};
     const UInt = std.meta.Int(.unsigned, std.meta.bitCount(@TypeOf(ts.tv_nsec)));
     const unsec = @bitCast(UInt, ts.tv_nsec);
     const id = @truncate(u32, unsec + unsec / 65536);
diff --git a/lib/std/os/bits.zig b/lib/std/os/bits.zig
deleted file mode 100644
index 36eda7707f..0000000000
--- a/lib/std/os/bits.zig
+++ /dev/null
@@ -1,22 +0,0 @@
-//! Platform-dependent types and values that are used along with OS-specific APIs.
-//! These are imported into `std.c`, `std.os`, and `std.os.linux`.
-//! Root source files can define `os.bits` and these will additionally be added
-//! to the namespace.
-
-const std = @import("std");
-const root = @import("root");
-
-pub usingnamespace switch (std.Target.current.os.tag) {
-    .macos, .ios, .tvos, .watchos => @import("bits/darwin.zig"),
-    .dragonfly => @import("bits/dragonfly.zig"),
-    .freebsd => @import("bits/freebsd.zig"),
-    .haiku => @import("bits/haiku.zig"),
-    .linux => @import("bits/linux.zig"),
-    .netbsd => @import("bits/netbsd.zig"),
-    .openbsd => @import("bits/openbsd.zig"),
-    .wasi => @import("bits/wasi.zig"),
-    .windows => @import("bits/windows.zig"),
-    else => struct {},
-};
-
-pub usingnamespace if (@hasDecl(root, "os") and @hasDecl(root.os, "bits")) root.os.bits else struct {};
diff --git a/lib/std/os/bits/darwin.zig b/lib/std/os/bits/darwin.zig
index a0f5e5a400..e8556a4d89 100644
--- a/lib/std/os/bits/darwin.zig
+++ b/lib/std/os/bits/darwin.zig
@@ -2,8 +2,6 @@ const std = @import("../../std.zig");
 const assert = std.debug.assert;
 const maxInt = std.math.maxInt;
 
-pub usingnamespace @import("posix.zig");
-
 // See: https://opensource.apple.com/source/xnu/xnu-6153.141.1/bsd/sys/_types.h.auto.html
 // TODO: audit mode_t/pid_t, should likely be u16/i32
 pub const fd_t = c_int;
diff --git a/lib/std/os/bits/dragonfly.zig b/lib/std/os/bits/dragonfly.zig
index 4fe52a6f0a..c7f6e88273 100644
--- a/lib/std/os/bits/dragonfly.zig
+++ b/lib/std/os/bits/dragonfly.zig
@@ -1,8 +1,6 @@
 const std = @import("../../std.zig");
 const maxInt = std.math.maxInt;
 
-pub usingnamespace @import("posix.zig");
-
 pub fn S_ISCHR(m: u32) bool {
     return m & S_IFMT == S_IFCHR;
 }
diff --git a/lib/std/os/bits/freebsd.zig b/lib/std/os/bits/freebsd.zig
index b4ff21fbf0..2badc0a2ec 100644
--- a/lib/std/os/bits/freebsd.zig
+++ b/lib/std/os/bits/freebsd.zig
@@ -2,8 +2,6 @@ const std = @import("../../std.zig");
 const builtin = @import("builtin");
 const maxInt = std.math.maxInt;
 
-pub usingnamespace @import("posix.zig");
-
 pub const blksize_t = i32;
 pub const blkcnt_t = i64;
 pub const clockid_t = i32;
diff --git a/lib/std/os/bits/haiku.zig b/lib/std/os/bits/haiku.zig
index 620bf23414..4a2cecf442 100644
--- a/lib/std/os/bits/haiku.zig
+++ b/lib/std/os/bits/haiku.zig
@@ -1,8 +1,6 @@
 const std = @import("../../std.zig");
 const maxInt = std.math.maxInt;
 
-pub usingnamespace @import("posix.zig");
-
 pub const fd_t = c_int;
 pub const pid_t = c_int;
 pub const uid_t = u32;
diff --git a/lib/std/os/bits/linux.zig b/lib/std/os/bits/linux.zig
deleted file mode 100644
index dfc2b5065c..0000000000
--- a/lib/std/os/bits/linux.zig
+++ /dev/null
@@ -1,2455 +0,0 @@
-const std = @import("../../std.zig");
-const maxInt = std.math.maxInt;
-const arch = @import("builtin").target.cpu.arch;
-pub usingnamespace @import("posix.zig");
-
-pub const E = switch (arch) {
-    .mips, .mipsel => @import("linux/errno/mips.zig").E,
-    .sparc, .sparcel, .sparcv9 => @import("linux/errno/sparc.zig").E,
-    else => @import("linux/errno/generic.zig").E,
-};
-
-pub usingnamespace switch (arch) {
-    .i386 => @import("linux/i386.zig"),
-    .x86_64 => @import("linux/x86_64.zig"),
-    .aarch64 => @import("linux/arm64.zig"),
-    .arm, .thumb => @import("linux/arm-eabi.zig"),
-    .riscv64 => @import("linux/riscv64.zig"),
-    .sparcv9 => @import("linux/sparc64.zig"),
-    .mips, .mipsel => @import("linux/mips.zig"),
-    .powerpc => @import("linux/powerpc.zig"),
-    .powerpc64, .powerpc64le => @import("linux/powerpc64.zig"),
-    else => struct {},
-};
-
-pub usingnamespace @import("linux/netlink.zig");
-pub usingnamespace @import("linux/prctl.zig");
-pub usingnamespace @import("linux/securebits.zig");
-pub usingnamespace @import("linux/xdp.zig");
-
-const is_mips = arch.isMIPS();
-const is_ppc = arch.isPPC();
-const is_ppc64 = arch.isPPC64();
-const is_sparc = arch.isSPARC();
-
-pub const pid_t = i32;
-pub const fd_t = i32;
-pub const uid_t = u32;
-pub const gid_t = u32;
-pub const clock_t = isize;
-
-pub const NAME_MAX = 255;
-pub const PATH_MAX = 4096;
-pub const IOV_MAX = 1024;
-
-/// Largest hardware address length
-/// e.g. a mac address is a type of hardware address
-pub const MAX_ADDR_LEN = 32;
-
-pub const STDIN_FILENO = 0;
-pub const STDOUT_FILENO = 1;
-pub const STDERR_FILENO = 2;
-
-/// Special value used to indicate openat should use the current working directory
-pub const AT_FDCWD = -100;
-
-/// Do not follow symbolic links
-pub const AT_SYMLINK_NOFOLLOW = 0x100;
-
-/// Remove directory instead of unlinking file
-pub const AT_REMOVEDIR = 0x200;
-
-/// Follow symbolic links.
-pub const AT_SYMLINK_FOLLOW = 0x400;
-
-/// Suppress terminal automount traversal
-pub const AT_NO_AUTOMOUNT = 0x800;
-
-/// Allow empty relative pathname
-pub const AT_EMPTY_PATH = 0x1000;
-
-/// Type of synchronisation required from statx()
-pub const AT_STATX_SYNC_TYPE = 0x6000;
-
-/// - Do whatever stat() does
-pub const AT_STATX_SYNC_AS_STAT = 0x0000;
-
-/// - Force the attributes to be sync'd with the server
-pub const AT_STATX_FORCE_SYNC = 0x2000;
-
-/// - Don't sync attributes with the server
-pub const AT_STATX_DONT_SYNC = 0x4000;
-
-/// Apply to the entire subtree
-pub const AT_RECURSIVE = 0x8000;
-
-/// Default is extend size
-pub const FALLOC_FL_KEEP_SIZE = 0x01;
-
-/// De-allocates range
-pub const FALLOC_FL_PUNCH_HOLE = 0x02;
-
-/// Reserved codepoint
-pub const FALLOC_FL_NO_HIDE_STALE = 0x04;
-
-/// Removes a range of a file without leaving a hole in the file
-pub const FALLOC_FL_COLLAPSE_RANGE = 0x08;
-
-/// Converts a range of file to zeros preferably without issuing data IO
-pub const FALLOC_FL_ZERO_RANGE = 0x10;
-
-/// Inserts space within the file size without overwriting any existing data
-pub const FALLOC_FL_INSERT_RANGE = 0x20;
-
-/// Unshares shared blocks within the file size without overwriting any existing data
-pub const FALLOC_FL_UNSHARE_RANGE = 0x40;
-
-pub const FUTEX_WAIT = 0;
-pub const FUTEX_WAKE = 1;
-pub const FUTEX_FD = 2;
-pub const FUTEX_REQUEUE = 3;
-pub const FUTEX_CMP_REQUEUE = 4;
-pub const FUTEX_WAKE_OP = 5;
-pub const FUTEX_LOCK_PI = 6;
-pub const FUTEX_UNLOCK_PI = 7;
-pub const FUTEX_TRYLOCK_PI = 8;
-pub const FUTEX_WAIT_BITSET = 9;
-pub const FUTEX_WAKE_BITSET = 10;
-pub const FUTEX_WAIT_REQUEUE_PI = 11;
-pub const FUTEX_CMP_REQUEUE_PI = 12;
-
-pub const FUTEX_PRIVATE_FLAG = 128;
-
-pub const FUTEX_CLOCK_REALTIME = 256;
-
-/// page can not be accessed
-pub const PROT_NONE = 0x0;
-
-/// page can be read
-pub const PROT_READ = 0x1;
-
-/// page can be written
-pub const PROT_WRITE = 0x2;
-
-/// page can be executed
-pub const PROT_EXEC = 0x4;
-
-/// page may be used for atomic ops
-pub const PROT_SEM = switch (arch) {
-    // TODO: also xtensa
-    .mips, .mipsel, .mips64, .mips64el => 0x10,
-    else => 0x8,
-};
-
-/// mprotect flag: extend change to start of growsdown vma
-pub const PROT_GROWSDOWN = 0x01000000;
-
-/// mprotect flag: extend change to end of growsup vma
-pub const PROT_GROWSUP = 0x02000000;
-
-/// Share changes
-pub const MAP_SHARED = 0x01;
-
-/// Changes are private
-pub const MAP_PRIVATE = 0x02;
-
-/// share + validate extension flags
-pub const MAP_SHARED_VALIDATE = 0x03;
-
-/// Mask for type of mapping
-pub const MAP_TYPE = 0x0f;
-
-/// Interpret addr exactly
-pub const MAP_FIXED = 0x10;
-
-/// don't use a file
-pub const MAP_ANONYMOUS = if (is_mips) 0x800 else 0x20;
-
-// MAP_ 0x0100 - 0x4000 flags are per architecture
-
-/// populate (prefault) pagetables
-pub const MAP_POPULATE = if (is_mips) 0x10000 else 0x8000;
-
-/// do not block on IO
-pub const MAP_NONBLOCK = if (is_mips) 0x20000 else 0x10000;
-
-/// give out an address that is best suited for process/thread stacks
-pub const MAP_STACK = if (is_mips) 0x40000 else 0x20000;
-
-/// create a huge page mapping
-pub const MAP_HUGETLB = if (is_mips) 0x80000 else 0x40000;
-
-/// perform synchronous page faults for the mapping
-pub const MAP_SYNC = 0x80000;
-
-/// MAP_FIXED which doesn't unmap underlying mapping
-pub const MAP_FIXED_NOREPLACE = 0x100000;
-
-/// For anonymous mmap, memory could be uninitialized
-pub const MAP_UNINITIALIZED = 0x4000000;
-
-pub const FD_CLOEXEC = 1;
-
-pub const F_OK = 0;
-pub const X_OK = 1;
-pub const W_OK = 2;
-pub const R_OK = 4;
-
-pub const WNOHANG = 1;
-pub const WUNTRACED = 2;
-pub const WSTOPPED = 2;
-pub const WEXITED = 4;
-pub const WCONTINUED = 8;
-pub const WNOWAIT = 0x1000000;
-
-// waitid id types
-pub const P = enum(c_uint) {
-    ALL = 0,
-    PID = 1,
-    PGID = 2,
-    PIDFD = 3,
-    _,
-};
-
-pub usingnamespace if (is_mips)
-    struct {
-        pub const SA_NOCLDSTOP = 1;
-        pub const SA_NOCLDWAIT = 0x10000;
-        pub const SA_SIGINFO = 8;
-        pub const SA_RESTART = 0x10000000;
-        pub const SA_RESETHAND = 0x80000000;
-        pub const SA_ONSTACK = 0x08000000;
-        pub const SA_NODEFER = 0x40000000;
-        pub const SA_RESTORER = 0x04000000;
-
-        pub const SIG_BLOCK = 1;
-        pub const SIG_UNBLOCK = 2;
-        pub const SIG_SETMASK = 3;
-    }
-else if (is_sparc)
-    struct {
-        pub const SA_NOCLDSTOP = 0x8;
-        pub const SA_NOCLDWAIT = 0x100;
-        pub const SA_SIGINFO = 0x200;
-        pub const SA_RESTART = 0x2;
-        pub const SA_RESETHAND = 0x4;
-        pub const SA_ONSTACK = 0x1;
-        pub const SA_NODEFER = 0x20;
-        pub const SA_RESTORER = 0x04000000;
-
-        pub const SIG_BLOCK = 1;
-        pub const SIG_UNBLOCK = 2;
-        pub const SIG_SETMASK = 4;
-    }
-else
-    struct {
-        pub const SA_NOCLDSTOP = 1;
-        pub const SA_NOCLDWAIT = 2;
-        pub const SA_SIGINFO = 4;
-        pub const SA_RESTART = 0x10000000;
-        pub const SA_RESETHAND = 0x80000000;
-        pub const SA_ONSTACK = 0x08000000;
-        pub const SA_NODEFER = 0x40000000;
-        pub const SA_RESTORER = 0x04000000;
-
-        pub const SIG_BLOCK = 0;
-        pub const SIG_UNBLOCK = 1;
-        pub const SIG_SETMASK = 2;
-    };
-
-pub usingnamespace if (is_sparc) struct {
-    pub const SIGHUP = 1;
-    pub const SIGINT = 2;
-    pub const SIGQUIT = 3;
-    pub const SIGILL = 4;
-    pub const SIGTRAP = 5;
-    pub const SIGABRT = 6;
-    pub const SIGEMT = 7;
-    pub const SIGFPE = 8;
-    pub const SIGKILL = 9;
-    pub const SIGBUS = 10;
-    pub const SIGSEGV = 11;
-    pub const SIGSYS = 12;
-    pub const SIGPIPE = 13;
-    pub const SIGALRM = 14;
-    pub const SIGTERM = 15;
-    pub const SIGURG = 16;
-    pub const SIGSTOP = 17;
-    pub const SIGTSTP = 18;
-    pub const SIGCONT = 19;
-    pub const SIGCHLD = 20;
-    pub const SIGTTIN = 21;
-    pub const SIGTTOU = 22;
-    pub const SIGPOLL = 23;
-    pub const SIGXCPU = 24;
-    pub const SIGXFSZ = 25;
-    pub const SIGVTALRM = 26;
-    pub const SIGPROF = 27;
-    pub const SIGWINCH = 28;
-    pub const SIGLOST = 29;
-    pub const SIGUSR1 = 30;
-    pub const SIGUSR2 = 31;
-    pub const SIGIOT = SIGABRT;
-    pub const SIGCLD = SIGCHLD;
-    pub const SIGPWR = SIGLOST;
-    pub const SIGIO = SIGPOLL;
-} else struct {
-    pub const SIGHUP = 1;
-    pub const SIGINT = 2;
-    pub const SIGQUIT = 3;
-    pub const SIGILL = 4;
-    pub const SIGTRAP = 5;
-    pub const SIGABRT = 6;
-    pub const SIGIOT = SIGABRT;
-    pub const SIGBUS = 7;
-    pub const SIGFPE = 8;
-    pub const SIGKILL = 9;
-    pub const SIGUSR1 = 10;
-    pub const SIGSEGV = 11;
-    pub const SIGUSR2 = 12;
-    pub const SIGPIPE = 13;
-    pub const SIGALRM = 14;
-    pub const SIGTERM = 15;
-    pub const SIGSTKFLT = 16;
-    pub const SIGCHLD = 17;
-    pub const SIGCONT = 18;
-    pub const SIGSTOP = 19;
-    pub const SIGTSTP = 20;
-    pub const SIGTTIN = 21;
-    pub const SIGTTOU = 22;
-    pub const SIGURG = 23;
-    pub const SIGXCPU = 24;
-    pub const SIGXFSZ = 25;
-    pub const SIGVTALRM = 26;
-    pub const SIGPROF = 27;
-    pub const SIGWINCH = 28;
-    pub const SIGIO = 29;
-    pub const SIGPOLL = 29;
-    pub const SIGPWR = 30;
-    pub const SIGSYS = 31;
-    pub const SIGUNUSED = SIGSYS;
-};
-
-pub const O_RDONLY = 0o0;
-pub const O_WRONLY = 0o1;
-pub const O_RDWR = 0o2;
-
-pub const kernel_rwf = u32;
-
-/// high priority request, poll if possible
-pub const RWF_HIPRI: kernel_rwf = 0x00000001;
-
-/// per-IO O_DSYNC
-pub const RWF_DSYNC: kernel_rwf = 0x00000002;
-
-/// per-IO O_SYNC
-pub const RWF_SYNC: kernel_rwf = 0x00000004;
-
-/// per-IO, return -EAGAIN if operation would block
-pub const RWF_NOWAIT: kernel_rwf = 0x00000008;
-
-/// per-IO O_APPEND
-pub const RWF_APPEND: kernel_rwf = 0x00000010;
-
-pub const SEEK_SET = 0;
-pub const SEEK_CUR = 1;
-pub const SEEK_END = 2;
-
-pub const SHUT_RD = 0;
-pub const SHUT_WR = 1;
-pub const SHUT_RDWR = 2;
-
-pub const SOCK_STREAM = if (is_mips) 2 else 1;
-pub const SOCK_DGRAM = if (is_mips) 1 else 2;
-pub const SOCK_RAW = 3;
-pub const SOCK_RDM = 4;
-pub const SOCK_SEQPACKET = 5;
-pub const SOCK_DCCP = 6;
-pub const SOCK_PACKET = 10;
-pub const SOCK_CLOEXEC = 0o2000000;
-pub const SOCK_NONBLOCK = if (is_mips) 0o200 else 0o4000;
-
-pub const PF_UNSPEC = 0;
-pub const PF_LOCAL = 1;
-pub const PF_UNIX = PF_LOCAL;
-pub const PF_FILE = PF_LOCAL;
-pub const PF_INET = 2;
-pub const PF_AX25 = 3;
-pub const PF_IPX = 4;
-pub const PF_APPLETALK = 5;
-pub const PF_NETROM = 6;
-pub const PF_BRIDGE = 7;
-pub const PF_ATMPVC = 8;
-pub const PF_X25 = 9;
-pub const PF_INET6 = 10;
-pub const PF_ROSE = 11;
-pub const PF_DECnet = 12;
-pub const PF_NETBEUI = 13;
-pub const PF_SECURITY = 14;
-pub const PF_KEY = 15;
-pub const PF_NETLINK = 16;
-pub const PF_ROUTE = PF_NETLINK;
-pub const PF_PACKET = 17;
-pub const PF_ASH = 18;
-pub const PF_ECONET = 19;
-pub const PF_ATMSVC = 20;
-pub const PF_RDS = 21;
-pub const PF_SNA = 22;
-pub const PF_IRDA = 23;
-pub const PF_PPPOX = 24;
-pub const PF_WANPIPE = 25;
-pub const PF_LLC = 26;
-pub const PF_IB = 27;
-pub const PF_MPLS = 28;
-pub const PF_CAN = 29;
-pub const PF_TIPC = 30;
-pub const PF_BLUETOOTH = 31;
-pub const PF_IUCV = 32;
-pub const PF_RXRPC = 33;
-pub const PF_ISDN = 34;
-pub const PF_PHONET = 35;
-pub const PF_IEEE802154 = 36;
-pub const PF_CAIF = 37;
-pub const PF_ALG = 38;
-pub const PF_NFC = 39;
-pub const PF_VSOCK = 40;
-pub const PF_KCM = 41;
-pub const PF_QIPCRTR = 42;
-pub const PF_SMC = 43;
-pub const PF_XDP = 44;
-pub const PF_MAX = 45;
-
-pub const AF_UNSPEC = PF_UNSPEC;
-pub const AF_LOCAL = PF_LOCAL;
-pub const AF_UNIX = AF_LOCAL;
-pub const AF_FILE = AF_LOCAL;
-pub const AF_INET = PF_INET;
-pub const AF_AX25 = PF_AX25;
-pub const AF_IPX = PF_IPX;
-pub const AF_APPLETALK = PF_APPLETALK;
-pub const AF_NETROM = PF_NETROM;
-pub const AF_BRIDGE = PF_BRIDGE;
-pub const AF_ATMPVC = PF_ATMPVC;
-pub const AF_X25 = PF_X25;
-pub const AF_INET6 = PF_INET6;
-pub const AF_ROSE = PF_ROSE;
-pub const AF_DECnet = PF_DECnet;
-pub const AF_NETBEUI = PF_NETBEUI;
-pub const AF_SECURITY = PF_SECURITY;
-pub const AF_KEY = PF_KEY;
-pub const AF_NETLINK = PF_NETLINK;
-pub const AF_ROUTE = PF_ROUTE;
-pub const AF_PACKET = PF_PACKET;
-pub const AF_ASH = PF_ASH;
-pub const AF_ECONET = PF_ECONET;
-pub const AF_ATMSVC = PF_ATMSVC;
-pub const AF_RDS = PF_RDS;
-pub const AF_SNA = PF_SNA;
-pub const AF_IRDA = PF_IRDA;
-pub const AF_PPPOX = PF_PPPOX;
-pub const AF_WANPIPE = PF_WANPIPE;
-pub const AF_LLC = PF_LLC;
-pub const AF_IB = PF_IB;
-pub const AF_MPLS = PF_MPLS;
-pub const AF_CAN = PF_CAN;
-pub const AF_TIPC = PF_TIPC;
-pub const AF_BLUETOOTH = PF_BLUETOOTH;
-pub const AF_IUCV = PF_IUCV;
-pub const AF_RXRPC = PF_RXRPC;
-pub const AF_ISDN = PF_ISDN;
-pub const AF_PHONET = PF_PHONET;
-pub const AF_IEEE802154 = PF_IEEE802154;
-pub const AF_CAIF = PF_CAIF;
-pub const AF_ALG = PF_ALG;
-pub const AF_NFC = PF_NFC;
-pub const AF_VSOCK = PF_VSOCK;
-pub const AF_KCM = PF_KCM;
-pub const AF_QIPCRTR = PF_QIPCRTR;
-pub const AF_SMC = PF_SMC;
-pub const AF_XDP = PF_XDP;
-pub const AF_MAX = PF_MAX;
-
-pub usingnamespace if (is_mips)
-    struct {}
-else if (is_ppc or is_ppc64)
-    struct {
-        pub const SO_DEBUG = 1;
-        pub const SO_REUSEADDR = 2;
-        pub const SO_TYPE = 3;
-        pub const SO_ERROR = 4;
-        pub const SO_DONTROUTE = 5;
-        pub const SO_BROADCAST = 6;
-        pub const SO_SNDBUF = 7;
-        pub const SO_RCVBUF = 8;
-        pub const SO_KEEPALIVE = 9;
-        pub const SO_OOBINLINE = 10;
-        pub const SO_NO_CHECK = 11;
-        pub const SO_PRIORITY = 12;
-        pub const SO_LINGER = 13;
-        pub const SO_BSDCOMPAT = 14;
-        pub const SO_REUSEPORT = 15;
-        pub const SO_RCVLOWAT = 16;
-        pub const SO_SNDLOWAT = 17;
-        pub const SO_RCVTIMEO = 18;
-        pub const SO_SNDTIMEO = 19;
-        pub const SO_PASSCRED = 20;
-        pub const SO_PEERCRED = 21;
-        pub const SO_ACCEPTCONN = 30;
-        pub const SO_PEERSEC = 31;
-        pub const SO_SNDBUFFORCE = 32;
-        pub const SO_RCVBUFFORCE = 33;
-        pub const SO_PROTOCOL = 38;
-        pub const SO_DOMAIN = 39;
-    }
-else
-    struct {
-        pub const SO_DEBUG = 1;
-        pub const SO_REUSEADDR = 2;
-        pub const SO_TYPE = 3;
-        pub const SO_ERROR = 4;
-        pub const SO_DONTROUTE = 5;
-        pub const SO_BROADCAST = 6;
-        pub const SO_SNDBUF = 7;
-        pub const SO_RCVBUF = 8;
-        pub const SO_KEEPALIVE = 9;
-        pub const SO_OOBINLINE = 10;
-        pub const SO_NO_CHECK = 11;
-        pub const SO_PRIORITY = 12;
-        pub const SO_LINGER = 13;
-        pub const SO_BSDCOMPAT = 14;
-        pub const SO_REUSEPORT = 15;
-        pub const SO_PASSCRED = 16;
-        pub const SO_PEERCRED = 17;
-        pub const SO_RCVLOWAT = 18;
-        pub const SO_SNDLOWAT = 19;
-        pub const SO_RCVTIMEO = 20;
-        pub const SO_SNDTIMEO = 21;
-        pub const SO_ACCEPTCONN = 30;
-        pub const SO_PEERSEC = 31;
-        pub const SO_SNDBUFFORCE = 32;
-        pub const SO_RCVBUFFORCE = 33;
-        pub const SO_PROTOCOL = 38;
-        pub const SO_DOMAIN = 39;
-    };
-
-pub const SO_SECURITY_AUTHENTICATION = 22;
-pub const SO_SECURITY_ENCRYPTION_TRANSPORT = 23;
-pub const SO_SECURITY_ENCRYPTION_NETWORK = 24;
-
-pub const SO_BINDTODEVICE = 25;
-
-pub const SO_ATTACH_FILTER = 26;
-pub const SO_DETACH_FILTER = 27;
-pub const SO_GET_FILTER = SO_ATTACH_FILTER;
-
-pub const SO_PEERNAME = 28;
-pub const SO_TIMESTAMP_OLD = 29;
-pub const SO_PASSSEC = 34;
-pub const SO_TIMESTAMPNS_OLD = 35;
-pub const SO_MARK = 36;
-pub const SO_TIMESTAMPING_OLD = 37;
-
-pub const SO_RXQ_OVFL = 40;
-pub const SO_WIFI_STATUS = 41;
-pub const SCM_WIFI_STATUS = SO_WIFI_STATUS;
-pub const SO_PEEK_OFF = 42;
-pub const SO_NOFCS = 43;
-pub const SO_LOCK_FILTER = 44;
-pub const SO_SELECT_ERR_QUEUE = 45;
-pub const SO_BUSY_POLL = 46;
-pub const SO_MAX_PACING_RATE = 47;
-pub const SO_BPF_EXTENSIONS = 48;
-pub const SO_INCOMING_CPU = 49;
-pub const SO_ATTACH_BPF = 50;
-pub const SO_DETACH_BPF = SO_DETACH_FILTER;
-pub const SO_ATTACH_REUSEPORT_CBPF = 51;
-pub const SO_ATTACH_REUSEPORT_EBPF = 52;
-pub const SO_CNX_ADVICE = 53;
-pub const SCM_TIMESTAMPING_OPT_STATS = 54;
-pub const SO_MEMINFO = 55;
-pub const SO_INCOMING_NAPI_ID = 56;
-pub const SO_COOKIE = 57;
-pub const SCM_TIMESTAMPING_PKTINFO = 58;
-pub const SO_PEERGROUPS = 59;
-pub const SO_ZEROCOPY = 60;
-pub const SO_TXTIME = 61;
-pub const SCM_TXTIME = SO_TXTIME;
-pub const SO_BINDTOIFINDEX = 62;
-pub const SO_TIMESTAMP_NEW = 63;
-pub const SO_TIMESTAMPNS_NEW = 64;
-pub const SO_TIMESTAMPING_NEW = 65;
-pub const SO_RCVTIMEO_NEW = 66;
-pub const SO_SNDTIMEO_NEW = 67;
-pub const SO_DETACH_REUSEPORT_BPF = 68;
-
-pub const SOL_SOCKET = if (is_mips) 65535 else 1;
-
-pub const SOL_IP = 0;
-pub const SOL_IPV6 = 41;
-pub const SOL_ICMPV6 = 58;
-
-pub const SOL_RAW = 255;
-pub const SOL_DECNET = 261;
-pub const SOL_X25 = 262;
-pub const SOL_PACKET = 263;
-pub const SOL_ATM = 264;
-pub const SOL_AAL = 265;
-pub const SOL_IRDA = 266;
-pub const SOL_NETBEUI = 267;
-pub const SOL_LLC = 268;
-pub const SOL_DCCP = 269;
-pub const SOL_NETLINK = 270;
-pub const SOL_TIPC = 271;
-pub const SOL_RXRPC = 272;
-pub const SOL_PPPOL2TP = 273;
-pub const SOL_BLUETOOTH = 274;
-pub const SOL_PNPIPE = 275;
-pub const SOL_RDS = 276;
-pub const SOL_IUCV = 277;
-pub const SOL_CAIF = 278;
-pub const SOL_ALG = 279;
-pub const SOL_NFC = 280;
-pub const SOL_KCM = 281;
-pub const SOL_TLS = 282;
-pub const SOL_XDP = 283;
-
-pub const SOMAXCONN = 128;
-
-pub const IP_TOS = 1;
-pub const IP_TTL = 2;
-pub const IP_HDRINCL = 3;
-pub const IP_OPTIONS = 4;
-pub const IP_ROUTER_ALERT = 5;
-pub const IP_RECVOPTS = 6;
-pub const IP_RETOPTS = 7;
-pub const IP_PKTINFO = 8;
-pub const IP_PKTOPTIONS = 9;
-pub const IP_PMTUDISC = 10;
-pub const IP_MTU_DISCOVER = 10;
-pub const IP_RECVERR = 11;
-pub const IP_RECVTTL = 12;
-pub const IP_RECVTOS = 13;
-pub const IP_MTU = 14;
-pub const IP_FREEBIND = 15;
-pub const IP_IPSEC_POLICY = 16;
-pub const IP_XFRM_POLICY = 17;
-pub const IP_PASSSEC = 18;
-pub const IP_TRANSPARENT = 19;
-pub const IP_ORIGDSTADDR = 20;
-pub const IP_RECVORIGDSTADDR = IP_ORIGDSTADDR;
-pub const IP_MINTTL = 21;
-pub const IP_NODEFRAG = 22;
-pub const IP_CHECKSUM = 23;
-pub const IP_BIND_ADDRESS_NO_PORT = 24;
-pub const IP_RECVFRAGSIZE = 25;
-pub const IP_MULTICAST_IF = 32;
-pub const IP_MULTICAST_TTL = 33;
-pub const IP_MULTICAST_LOOP = 34;
-pub const IP_ADD_MEMBERSHIP = 35;
-pub const IP_DROP_MEMBERSHIP = 36;
-pub const IP_UNBLOCK_SOURCE = 37;
-pub const IP_BLOCK_SOURCE = 38;
-pub const IP_ADD_SOURCE_MEMBERSHIP = 39;
-pub const IP_DROP_SOURCE_MEMBERSHIP = 40;
-pub const IP_MSFILTER = 41;
-pub const IP_MULTICAST_ALL = 49;
-pub const IP_UNICAST_IF = 50;
-
-pub const IP_RECVRETOPTS = IP_RETOPTS;
-
-pub const IP_PMTUDISC_DONT = 0;
-pub const IP_PMTUDISC_WANT = 1;
-pub const IP_PMTUDISC_DO = 2;
-pub const IP_PMTUDISC_PROBE = 3;
-pub const IP_PMTUDISC_INTERFACE = 4;
-pub const IP_PMTUDISC_OMIT = 5;
-
-pub const IP_DEFAULT_MULTICAST_TTL = 1;
-pub const IP_DEFAULT_MULTICAST_LOOP = 1;
-pub const IP_MAX_MEMBERSHIPS = 20;
-
-// IPv6 socket options
-
-pub const IPV6_ADDRFORM = 1;
-pub const IPV6_2292PKTINFO = 2;
-pub const IPV6_2292HOPOPTS = 3;
-pub const IPV6_2292DSTOPTS = 4;
-pub const IPV6_2292RTHDR = 5;
-pub const IPV6_2292PKTOPTIONS = 6;
-pub const IPV6_CHECKSUM = 7;
-pub const IPV6_2292HOPLIMIT = 8;
-pub const IPV6_NEXTHOP = 9;
-pub const IPV6_AUTHHDR = 10;
-pub const IPV6_FLOWINFO = 11;
-
-pub const IPV6_UNICAST_HOPS = 16;
-pub const IPV6_MULTICAST_IF = 17;
-pub const IPV6_MULTICAST_HOPS = 18;
-pub const IPV6_MULTICAST_LOOP = 19;
-pub const IPV6_ADD_MEMBERSHIP = 20;
-pub const IPV6_DROP_MEMBERSHIP = 21;
-pub const IPV6_ROUTER_ALERT = 22;
-pub const IPV6_MTU_DISCOVER = 23;
-pub const IPV6_MTU = 24;
-pub const IPV6_RECVERR = 25;
-pub const IPV6_V6ONLY = 26;
-pub const IPV6_JOIN_ANYCAST = 27;
-pub const IPV6_LEAVE_ANYCAST = 28;
-
-// IPV6_MTU_DISCOVER values
-pub const IPV6_PMTUDISC_DONT = 0;
-pub const IPV6_PMTUDISC_WANT = 1;
-pub const IPV6_PMTUDISC_DO = 2;
-pub const IPV6_PMTUDISC_PROBE = 3;
-pub const IPV6_PMTUDISC_INTERFACE = 4;
-pub const IPV6_PMTUDISC_OMIT = 5;
-
-// Flowlabel
-pub const IPV6_FLOWLABEL_MGR = 32;
-pub const IPV6_FLOWINFO_SEND = 33;
-pub const IPV6_IPSEC_POLICY = 34;
-pub const IPV6_XFRM_POLICY = 35;
-pub const IPV6_HDRINCL = 36;
-
-// Advanced API (RFC3542) (1)
-pub const IPV6_RECVPKTINFO = 49;
-pub const IPV6_PKTINFO = 50;
-pub const IPV6_RECVHOPLIMIT = 51;
-pub const IPV6_HOPLIMIT = 52;
-pub const IPV6_RECVHOPOPTS = 53;
-pub const IPV6_HOPOPTS = 54;
-pub const IPV6_RTHDRDSTOPTS = 55;
-pub const IPV6_RECVRTHDR = 56;
-pub const IPV6_RTHDR = 57;
-pub const IPV6_RECVDSTOPTS = 58;
-pub const IPV6_DSTOPTS = 59;
-pub const IPV6_RECVPATHMTU = 60;
-pub const IPV6_PATHMTU = 61;
-pub const IPV6_DONTFRAG = 62;
-
-// Advanced API (RFC3542) (2)
-pub const IPV6_RECVTCLASS = 66;
-pub const IPV6_TCLASS = 67;
-
-pub const IPV6_AUTOFLOWLABEL = 70;
-
-// RFC5014: Source address selection
-pub const IPV6_ADDR_PREFERENCES = 72;
-
-pub const IPV6_PREFER_SRC_TMP = 0x0001;
-pub const IPV6_PREFER_SRC_PUBLIC = 0x0002;
-pub const IPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x0100;
-pub const IPV6_PREFER_SRC_COA = 0x0004;
-pub const IPV6_PREFER_SRC_HOME = 0x0400;
-pub const IPV6_PREFER_SRC_CGA = 0x0008;
-pub const IPV6_PREFER_SRC_NONCGA = 0x0800;
-
-// RFC5082: Generalized Ttl Security Mechanism
-pub const IPV6_MINHOPCOUNT = 73;
-
-pub const IPV6_ORIGDSTADDR = 74;
-pub const IPV6_RECVORIGDSTADDR = IPV6_ORIGDSTADDR;
-pub const IPV6_TRANSPARENT = 75;
-pub const IPV6_UNICAST_IF = 76;
-pub const IPV6_RECVFRAGSIZE = 77;
-pub const IPV6_FREEBIND = 78;
-
-pub const MSG_OOB = 0x0001;
-pub const MSG_PEEK = 0x0002;
-pub const MSG_DONTROUTE = 0x0004;
-pub const MSG_CTRUNC = 0x0008;
-pub const MSG_PROXY = 0x0010;
-pub const MSG_TRUNC = 0x0020;
-pub const MSG_DONTWAIT = 0x0040;
-pub const MSG_EOR = 0x0080;
-pub const MSG_WAITALL = 0x0100;
-pub const MSG_FIN = 0x0200;
-pub const MSG_SYN = 0x0400;
-pub const MSG_CONFIRM = 0x0800;
-pub const MSG_RST = 0x1000;
-pub const MSG_ERRQUEUE = 0x2000;
-pub const MSG_NOSIGNAL = 0x4000;
-pub const MSG_MORE = 0x8000;
-pub const MSG_WAITFORONE = 0x10000;
-pub const MSG_BATCH = 0x40000;
-pub const MSG_ZEROCOPY = 0x4000000;
-pub const MSG_FASTOPEN = 0x20000000;
-pub const MSG_CMSG_CLOEXEC = 0x40000000;
-
-pub const DT_UNKNOWN = 0;
-pub const DT_FIFO = 1;
-pub const DT_CHR = 2;
-pub const DT_DIR = 4;
-pub const DT_BLK = 6;
-pub const DT_REG = 8;
-pub const DT_LNK = 10;
-pub const DT_SOCK = 12;
-pub const DT_WHT = 14;
-
-pub const TCGETS = if (is_mips) 0x540D else 0x5401;
-pub const TCSETS = 0x5402;
-pub const TCSETSW = 0x5403;
-pub const TCSETSF = 0x5404;
-pub const TCGETA = 0x5405;
-pub const TCSETA = 0x5406;
-pub const TCSETAW = 0x5407;
-pub const TCSETAF = 0x5408;
-pub const TCSBRK = 0x5409;
-pub const TCXONC = 0x540A;
-pub const TCFLSH = 0x540B;
-pub const TIOCEXCL = 0x540C;
-pub const TIOCNXCL = 0x540D;
-pub const TIOCSCTTY = 0x540E;
-pub const TIOCGPGRP = 0x540F;
-pub const TIOCSPGRP = 0x5410;
-pub const TIOCOUTQ = if (is_mips) 0x7472 else 0x5411;
-pub const TIOCSTI = 0x5412;
-pub const TIOCGWINSZ = if (is_mips or is_ppc64) 0x40087468 else 0x5413;
-pub const TIOCSWINSZ = if (is_mips or is_ppc64) 0x80087467 else 0x5414;
-pub const TIOCMGET = 0x5415;
-pub const TIOCMBIS = 0x5416;
-pub const TIOCMBIC = 0x5417;
-pub const TIOCMSET = 0x5418;
-pub const TIOCGSOFTCAR = 0x5419;
-pub const TIOCSSOFTCAR = 0x541A;
-pub const FIONREAD = if (is_mips) 0x467F else 0x541B;
-pub const TIOCINQ = FIONREAD;
-pub const TIOCLINUX = 0x541C;
-pub const TIOCCONS = 0x541D;
-pub const TIOCGSERIAL = 0x541E;
-pub const TIOCSSERIAL = 0x541F;
-pub const TIOCPKT = 0x5420;
-pub const FIONBIO = 0x5421;
-pub const TIOCNOTTY = 0x5422;
-pub const TIOCSETD = 0x5423;
-pub const TIOCGETD = 0x5424;
-pub const TCSBRKP = 0x5425;
-pub const TIOCSBRK = 0x5427;
-pub const TIOCCBRK = 0x5428;
-pub const TIOCGSID = 0x5429;
-pub const TIOCGRS485 = 0x542E;
-pub const TIOCSRS485 = 0x542F;
-pub const TIOCGPTN = 0x80045430;
-pub const TIOCSPTLCK = 0x40045431;
-pub const TIOCGDEV = 0x80045432;
-pub const TCGETX = 0x5432;
-pub const TCSETX = 0x5433;
-pub const TCSETXF = 0x5434;
-pub const TCSETXW = 0x5435;
-pub const TIOCSIG = 0x40045436;
-pub const TIOCVHANGUP = 0x5437;
-pub const TIOCGPKT = 0x80045438;
-pub const TIOCGPTLCK = 0x80045439;
-pub const TIOCGEXCL = 0x80045440;
-
-pub const EPOLL_CLOEXEC = O_CLOEXEC;
-
-pub const EPOLL_CTL_ADD = 1;
-pub const EPOLL_CTL_DEL = 2;
-pub const EPOLL_CTL_MOD = 3;
-
-pub const EPOLLIN = 0x001;
-pub const EPOLLPRI = 0x002;
-pub const EPOLLOUT = 0x004;
-pub const EPOLLRDNORM = 0x040;
-pub const EPOLLRDBAND = 0x080;
-pub const EPOLLWRNORM = if (is_mips) 0x004 else 0x100;
-pub const EPOLLWRBAND = if (is_mips) 0x100 else 0x200;
-pub const EPOLLMSG = 0x400;
-pub const EPOLLERR = 0x008;
-pub const EPOLLHUP = 0x010;
-pub const EPOLLRDHUP = 0x2000;
-pub const EPOLLEXCLUSIVE = (@as(u32, 1) << 28);
-pub const EPOLLWAKEUP = (@as(u32, 1) << 29);
-pub const EPOLLONESHOT = (@as(u32, 1) << 30);
-pub const EPOLLET = (@as(u32, 1) << 31);
-
-pub const CLOCK_REALTIME = 0;
-pub const CLOCK_MONOTONIC = 1;
-pub const CLOCK_PROCESS_CPUTIME_ID = 2;
-pub const CLOCK_THREAD_CPUTIME_ID = 3;
-pub const CLOCK_MONOTONIC_RAW = 4;
-pub const CLOCK_REALTIME_COARSE = 5;
-pub const CLOCK_MONOTONIC_COARSE = 6;
-pub const CLOCK_BOOTTIME = 7;
-pub const CLOCK_REALTIME_ALARM = 8;
-pub const CLOCK_BOOTTIME_ALARM = 9;
-pub const CLOCK_SGI_CYCLE = 10;
-pub const CLOCK_TAI = 11;
-
-pub const CSIGNAL = 0x000000ff;
-pub const CLONE_VM = 0x00000100;
-pub const CLONE_FS = 0x00000200;
-pub const CLONE_FILES = 0x00000400;
-pub const CLONE_SIGHAND = 0x00000800;
-pub const CLONE_PIDFD = 0x00001000;
-pub const CLONE_PTRACE = 0x00002000;
-pub const CLONE_VFORK = 0x00004000;
-pub const CLONE_PARENT = 0x00008000;
-pub const CLONE_THREAD = 0x00010000;
-pub const CLONE_NEWNS = 0x00020000;
-pub const CLONE_SYSVSEM = 0x00040000;
-pub const CLONE_SETTLS = 0x00080000;
-pub const CLONE_PARENT_SETTID = 0x00100000;
-pub const CLONE_CHILD_CLEARTID = 0x00200000;
-pub const CLONE_DETACHED = 0x00400000;
-pub const CLONE_UNTRACED = 0x00800000;
-pub const CLONE_CHILD_SETTID = 0x01000000;
-pub const CLONE_NEWCGROUP = 0x02000000;
-pub const CLONE_NEWUTS = 0x04000000;
-pub const CLONE_NEWIPC = 0x08000000;
-pub const CLONE_NEWUSER = 0x10000000;
-pub const CLONE_NEWPID = 0x20000000;
-pub const CLONE_NEWNET = 0x40000000;
-pub const CLONE_IO = 0x80000000;
-
-// Flags for the clone3() syscall.
-
-/// Clear any signal handler and reset to SIG_DFL.
-pub const CLONE_CLEAR_SIGHAND = 0x100000000;
-/// Clone into a specific cgroup given the right permissions.
-pub const CLONE_INTO_CGROUP = 0x200000000;
-
-// cloning flags intersect with CSIGNAL so can be used with unshare and clone3 syscalls only.
-
-/// New time namespace
-pub const CLONE_NEWTIME = 0x00000080;
-
-pub const EFD_SEMAPHORE = 1;
-pub const EFD_CLOEXEC = O_CLOEXEC;
-pub const EFD_NONBLOCK = O_NONBLOCK;
-
-pub const MS_RDONLY = 1;
-pub const MS_NOSUID = 2;
-pub const MS_NODEV = 4;
-pub const MS_NOEXEC = 8;
-pub const MS_SYNCHRONOUS = 16;
-pub const MS_REMOUNT = 32;
-pub const MS_MANDLOCK = 64;
-pub const MS_DIRSYNC = 128;
-pub const MS_NOATIME = 1024;
-pub const MS_NODIRATIME = 2048;
-pub const MS_BIND = 4096;
-pub const MS_MOVE = 8192;
-pub const MS_REC = 16384;
-pub const MS_SILENT = 32768;
-pub const MS_POSIXACL = (1 << 16);
-pub const MS_UNBINDABLE = (1 << 17);
-pub const MS_PRIVATE = (1 << 18);
-pub const MS_SLAVE = (1 << 19);
-pub const MS_SHARED = (1 << 20);
-pub const MS_RELATIME = (1 << 21);
-pub const MS_KERNMOUNT = (1 << 22);
-pub const MS_I_VERSION = (1 << 23);
-pub const MS_STRICTATIME = (1 << 24);
-pub const MS_LAZYTIME = (1 << 25);
-pub const MS_NOREMOTELOCK = (1 << 27);
-pub const MS_NOSEC = (1 << 28);
-pub const MS_BORN = (1 << 29);
-pub const MS_ACTIVE = (1 << 30);
-pub const MS_NOUSER = (1 << 31);
-
-pub const MS_RMT_MASK = (MS_RDONLY | MS_SYNCHRONOUS | MS_MANDLOCK | MS_I_VERSION | MS_LAZYTIME);
-
-pub const MS_MGC_VAL = 0xc0ed0000;
-pub const MS_MGC_MSK = 0xffff0000;
-
-pub const MNT_FORCE = 1;
-pub const MNT_DETACH = 2;
-pub const MNT_EXPIRE = 4;
-pub const UMOUNT_NOFOLLOW = 8;
-
-pub const IN_CLOEXEC = O_CLOEXEC;
-pub const IN_NONBLOCK = O_NONBLOCK;
-
-pub const IN_ACCESS = 0x00000001;
-pub const IN_MODIFY = 0x00000002;
-pub const IN_ATTRIB = 0x00000004;
-pub const IN_CLOSE_WRITE = 0x00000008;
-pub const IN_CLOSE_NOWRITE = 0x00000010;
-pub const IN_CLOSE = IN_CLOSE_WRITE | IN_CLOSE_NOWRITE;
-pub const IN_OPEN = 0x00000020;
-pub const IN_MOVED_FROM = 0x00000040;
-pub const IN_MOVED_TO = 0x00000080;
-pub const IN_MOVE = IN_MOVED_FROM | IN_MOVED_TO;
-pub const IN_CREATE = 0x00000100;
-pub const IN_DELETE = 0x00000200;
-pub const IN_DELETE_SELF = 0x00000400;
-pub const IN_MOVE_SELF = 0x00000800;
-pub const IN_ALL_EVENTS = 0x00000fff;
-
-pub const IN_UNMOUNT = 0x00002000;
-pub const IN_Q_OVERFLOW = 0x00004000;
-pub const IN_IGNORED = 0x00008000;
-
-pub const IN_ONLYDIR = 0x01000000;
-pub const IN_DONT_FOLLOW = 0x02000000;
-pub const IN_EXCL_UNLINK = 0x04000000;
-pub const IN_MASK_ADD = 0x20000000;
-
-pub const IN_ISDIR = 0x40000000;
-pub const IN_ONESHOT = 0x80000000;
-
-pub const S_IFMT = 0o170000;
-
-pub const S_IFDIR = 0o040000;
-pub const S_IFCHR = 0o020000;
-pub const S_IFBLK = 0o060000;
-pub const S_IFREG = 0o100000;
-pub const S_IFIFO = 0o010000;
-pub const S_IFLNK = 0o120000;
-pub const S_IFSOCK = 0o140000;
-
-pub const S_ISUID = 0o4000;
-pub const S_ISGID = 0o2000;
-pub const S_ISVTX = 0o1000;
-pub const S_IRUSR = 0o400;
-pub const S_IWUSR = 0o200;
-pub const S_IXUSR = 0o100;
-pub const S_IRWXU = 0o700;
-pub const S_IRGRP = 0o040;
-pub const S_IWGRP = 0o020;
-pub const S_IXGRP = 0o010;
-pub const S_IRWXG = 0o070;
-pub const S_IROTH = 0o004;
-pub const S_IWOTH = 0o002;
-pub const S_IXOTH = 0o001;
-pub const S_IRWXO = 0o007;
-
-pub fn S_ISREG(m: u32) bool {
-    return m & S_IFMT == S_IFREG;
-}
-
-pub fn S_ISDIR(m: u32) bool {
-    return m & S_IFMT == S_IFDIR;
-}
-
-pub fn S_ISCHR(m: u32) bool {
-    return m & S_IFMT == S_IFCHR;
-}
-
-pub fn S_ISBLK(m: u32) bool {
-    return m & S_IFMT == S_IFBLK;
-}
-
-pub fn S_ISFIFO(m: u32) bool {
-    return m & S_IFMT == S_IFIFO;
-}
-
-pub fn S_ISLNK(m: u32) bool {
-    return m & S_IFMT == S_IFLNK;
-}
-
-pub fn S_ISSOCK(m: u32) bool {
-    return m & S_IFMT == S_IFSOCK;
-}
-
-pub const UTIME_NOW = 0x3fffffff;
-pub const UTIME_OMIT = 0x3ffffffe;
-
-pub const TFD_NONBLOCK = O_NONBLOCK;
-pub const TFD_CLOEXEC = O_CLOEXEC;
-
-pub const TFD_TIMER_ABSTIME = 1;
-pub const TFD_TIMER_CANCEL_ON_SET = (1 << 1);
-
-pub fn WEXITSTATUS(s: u32) u8 {
-    return @intCast(u8, (s & 0xff00) >> 8);
-}
-pub fn WTERMSIG(s: u32) u32 {
-    return s & 0x7f;
-}
-pub fn WSTOPSIG(s: u32) u32 {
-    return WEXITSTATUS(s);
-}
-pub fn WIFEXITED(s: u32) bool {
-    return WTERMSIG(s) == 0;
-}
-pub fn WIFSTOPPED(s: u32) bool {
-    return @truncate(u16, ((s & 0xffff) *% 0x10001) >> 8) > 0x7f00;
-}
-pub fn WIFSIGNALED(s: u32) bool {
-    return (s & 0xffff) -% 1 < 0xff;
-}
-
-pub const winsize = extern struct {
-    ws_row: u16,
-    ws_col: u16,
-    ws_xpixel: u16,
-    ws_ypixel: u16,
-};
-
-/// NSIG is the total number of signals defined.
-/// As signal numbers are sequential, NSIG is one greater than the largest defined signal number.
-pub const NSIG = if (is_mips) 128 else 65;
-
-pub const sigset_t = [1024 / 32]u32;
-
-pub const all_mask: sigset_t = [_]u32{0xffffffff} ** sigset_t.len;
-pub const app_mask: sigset_t = [2]u32{ 0xfffffffc, 0x7fffffff } ++ [_]u32{0xffffffff} ** 30;
-
-pub const k_sigaction = switch (arch) {
-    .mips, .mipsel => extern struct {
-        flags: c_uint,
-        handler: ?fn (c_int) callconv(.C) void,
-        mask: [4]c_ulong,
-        restorer: fn () callconv(.C) void,
-    },
-    .mips64, .mips64el => extern struct {
-        flags: c_uint,
-        handler: ?fn (c_int) callconv(.C) void,
-        mask: [2]c_ulong,
-        restorer: fn () callconv(.C) void,
-    },
-    else => extern struct {
-        handler: ?fn (c_int) callconv(.C) void,
-        flags: c_ulong,
-        restorer: fn () callconv(.C) void,
-        mask: [2]c_uint,
-    },
-};
-
-/// Renamed from `sigaction` to `Sigaction` to avoid conflict with the syscall.
-pub const Sigaction = extern struct {
-    pub const handler_fn = fn (c_int) callconv(.C) void;
-    pub const sigaction_fn = fn (c_int, *const siginfo_t, ?*const c_void) callconv(.C) void;
-
-    handler: extern union {
-        handler: ?handler_fn,
-        sigaction: ?sigaction_fn,
-    },
-    mask: sigset_t,
-    flags: c_uint,
-    restorer: ?fn () callconv(.C) void = null,
-};
-
-pub const SIG_ERR = @intToPtr(?Sigaction.sigaction_fn, maxInt(usize));
-pub const SIG_DFL = @intToPtr(?Sigaction.sigaction_fn, 0);
-pub const SIG_IGN = @intToPtr(?Sigaction.sigaction_fn, 1);
-
-pub const empty_sigset = [_]u32{0} ** @typeInfo(sigset_t).Array.len;
-
-pub const SFD_CLOEXEC = O_CLOEXEC;
-pub const SFD_NONBLOCK = O_NONBLOCK;
-
-pub const signalfd_siginfo = extern struct {
-    signo: u32,
-    errno: i32,
-    code: i32,
-    pid: u32,
-    uid: uid_t,
-    fd: i32,
-    tid: u32,
-    band: u32,
-    overrun: u32,
-    trapno: u32,
-    status: i32,
-    int: i32,
-    ptr: u64,
-    utime: u64,
-    stime: u64,
-    addr: u64,
-    addr_lsb: u16,
-    __pad2: u16,
-    syscall: i32,
-    call_addr: u64,
-    arch: u32,
-    __pad: [28]u8,
-};
-
-pub const in_port_t = u16;
-pub const sa_family_t = u16;
-pub const socklen_t = u32;
-
-pub const sockaddr = extern struct {
-    family: sa_family_t,
-    data: [14]u8,
-};
-
-pub const sockaddr_storage = std.x.os.Socket.Address.Native.Storage;
-
-/// IPv4 socket address
-pub const sockaddr_in = extern struct {
-    family: sa_family_t = AF_INET,
-    port: in_port_t,
-    addr: u32,
-    zero: [8]u8 = [8]u8{ 0, 0, 0, 0, 0, 0, 0, 0 },
-};
-
-/// IPv6 socket address
-pub const sockaddr_in6 = extern struct {
-    family: sa_family_t = AF_INET6,
-    port: in_port_t,
-    flowinfo: u32,
-    addr: [16]u8,
-    scope_id: u32,
-};
-
-/// UNIX domain socket address
-pub const sockaddr_un = extern struct {
-    family: sa_family_t = AF_UNIX,
-    path: [108]u8,
-};
-
-pub const mmsghdr = extern struct {
-    msg_hdr: msghdr,
-    msg_len: u32,
-};
-
-pub const mmsghdr_const = extern struct {
-    msg_hdr: msghdr_const,
-    msg_len: u32,
-};
-
-pub const epoll_data = extern union {
-    ptr: usize,
-    fd: i32,
-    @"u32": u32,
-    @"u64": u64,
-};
-
-// On x86_64 the structure is packed so that it matches the definition of its
-// 32bit counterpart
-pub const epoll_event = switch (arch) {
-    .x86_64 => packed struct {
-        events: u32,
-        data: epoll_data,
-    },
-    else => extern struct {
-        events: u32,
-        data: epoll_data,
-    },
-};
-
-pub const _LINUX_CAPABILITY_VERSION_1 = 0x19980330;
-pub const _LINUX_CAPABILITY_U32S_1 = 1;
-
-pub const _LINUX_CAPABILITY_VERSION_2 = 0x20071026;
-pub const _LINUX_CAPABILITY_U32S_2 = 2;
-
-pub const _LINUX_CAPABILITY_VERSION_3 = 0x20080522;
-pub const _LINUX_CAPABILITY_U32S_3 = 2;
-
-pub const VFS_CAP_REVISION_MASK = 0xFF000000;
-pub const VFS_CAP_REVISION_SHIFT = 24;
-pub const VFS_CAP_FLAGS_MASK = ~VFS_CAP_REVISION_MASK;
-pub const VFS_CAP_FLAGS_EFFECTIVE = 0x000001;
-
-pub const VFS_CAP_REVISION_1 = 0x01000000;
-pub const VFS_CAP_U32_1 = 1;
-pub const XATTR_CAPS_SZ_1 = @sizeOf(u32) * (1 + 2 * VFS_CAP_U32_1);
-
-pub const VFS_CAP_REVISION_2 = 0x02000000;
-pub const VFS_CAP_U32_2 = 2;
-pub const XATTR_CAPS_SZ_2 = @sizeOf(u32) * (1 + 2 * VFS_CAP_U32_2);
-
-pub const XATTR_CAPS_SZ = XATTR_CAPS_SZ_2;
-pub const VFS_CAP_U32 = VFS_CAP_U32_2;
-pub const VFS_CAP_REVISION = VFS_CAP_REVISION_2;
-
-pub const vfs_cap_data = extern struct {
-    //all of these are mandated as little endian
-    //when on disk.
-    const Data = struct {
-        permitted: u32,
-        inheritable: u32,
-    };
-
-    magic_etc: u32,
-    data: [VFS_CAP_U32]Data,
-};
-
-pub const CAP_CHOWN = 0;
-pub const CAP_DAC_OVERRIDE = 1;
-pub const CAP_DAC_READ_SEARCH = 2;
-pub const CAP_FOWNER = 3;
-pub const CAP_FSETID = 4;
-pub const CAP_KILL = 5;
-pub const CAP_SETGID = 6;
-pub const CAP_SETUID = 7;
-pub const CAP_SETPCAP = 8;
-pub const CAP_LINUX_IMMUTABLE = 9;
-pub const CAP_NET_BIND_SERVICE = 10;
-pub const CAP_NET_BROADCAST = 11;
-pub const CAP_NET_ADMIN = 12;
-pub const CAP_NET_RAW = 13;
-pub const CAP_IPC_LOCK = 14;
-pub const CAP_IPC_OWNER = 15;
-pub const CAP_SYS_MODULE = 16;
-pub const CAP_SYS_RAWIO = 17;
-pub const CAP_SYS_CHROOT = 18;
-pub const CAP_SYS_PTRACE = 19;
-pub const CAP_SYS_PACCT = 20;
-pub const CAP_SYS_ADMIN = 21;
-pub const CAP_SYS_BOOT = 22;
-pub const CAP_SYS_NICE = 23;
-pub const CAP_SYS_RESOURCE = 24;
-pub const CAP_SYS_TIME = 25;
-pub const CAP_SYS_TTY_CONFIG = 26;
-pub const CAP_MKNOD = 27;
-pub const CAP_LEASE = 28;
-pub const CAP_AUDIT_WRITE = 29;
-pub const CAP_AUDIT_CONTROL = 30;
-pub const CAP_SETFCAP = 31;
-pub const CAP_MAC_OVERRIDE = 32;
-pub const CAP_MAC_ADMIN = 33;
-pub const CAP_SYSLOG = 34;
-pub const CAP_WAKE_ALARM = 35;
-pub const CAP_BLOCK_SUSPEND = 36;
-pub const CAP_AUDIT_READ = 37;
-pub const CAP_LAST_CAP = CAP_AUDIT_READ;
-
-pub fn cap_valid(x: u8) bool {
-    return x >= 0 and x <= CAP_LAST_CAP;
-}
-
-pub fn CAP_TO_MASK(cap: u8) u32 {
-    return @as(u32, 1) << @intCast(u5, cap & 31);
-}
-
-pub fn CAP_TO_INDEX(cap: u8) u8 {
-    return cap >> 5;
-}
-
-pub const cap_t = extern struct {
-    hdrp: *cap_user_header_t,
-    datap: *cap_user_data_t,
-};
-
-pub const cap_user_header_t = extern struct {
-    version: u32,
-    pid: usize,
-};
-
-pub const cap_user_data_t = extern struct {
-    effective: u32,
-    permitted: u32,
-    inheritable: u32,
-};
-
-pub const inotify_event = extern struct {
-    wd: i32,
-    mask: u32,
-    cookie: u32,
-    len: u32,
-    //name: [?]u8,
-};
-
-pub const dirent64 = extern struct {
-    d_ino: u64,
-    d_off: u64,
-    d_reclen: u16,
-    d_type: u8,
-    d_name: u8, // field address is the address of first byte of name https://github.com/ziglang/zig/issues/173
-
-    pub fn reclen(self: dirent64) u16 {
-        return self.d_reclen;
-    }
-};
-
-pub const dl_phdr_info = extern struct {
-    dlpi_addr: usize,
-    dlpi_name: ?[*:0]const u8,
-    dlpi_phdr: [*]std.elf.Phdr,
-    dlpi_phnum: u16,
-};
-
-pub const CPU_SETSIZE = 128;
-pub const cpu_set_t = [CPU_SETSIZE / @sizeOf(usize)]usize;
-pub const cpu_count_t = std.meta.Int(.unsigned, std.math.log2(CPU_SETSIZE * 8));
-
-pub fn CPU_COUNT(set: cpu_set_t) cpu_count_t {
-    var sum: cpu_count_t = 0;
-    for (set) |x| {
-        sum += @popCount(usize, x);
-    }
-    return sum;
-}
-
-// TODO port these over
-//#define CPU_SET(i, set) CPU_SET_S(i,sizeof(cpu_set_t),set)
-//#define CPU_CLR(i, set) CPU_CLR_S(i,sizeof(cpu_set_t),set)
-//#define CPU_ISSET(i, set) CPU_ISSET_S(i,sizeof(cpu_set_t),set)
-//#define CPU_AND(d,s1,s2) CPU_AND_S(sizeof(cpu_set_t),d,s1,s2)
-//#define CPU_OR(d,s1,s2) CPU_OR_S(sizeof(cpu_set_t),d,s1,s2)
-//#define CPU_XOR(d,s1,s2) CPU_XOR_S(sizeof(cpu_set_t),d,s1,s2)
-//#define CPU_COUNT(set) CPU_COUNT_S(sizeof(cpu_set_t),set)
-//#define CPU_ZERO(set) CPU_ZERO_S(sizeof(cpu_set_t),set)
-//#define CPU_EQUAL(s1,s2) CPU_EQUAL_S(sizeof(cpu_set_t),s1,s2)
-
-pub const MINSIGSTKSZ = switch (arch) {
-    .i386, .x86_64, .arm, .mipsel => 2048,
-    .aarch64 => 5120,
-    else => @compileError("MINSIGSTKSZ not defined for this architecture"),
-};
-pub const SIGSTKSZ = switch (arch) {
-    .i386, .x86_64, .arm, .mipsel => 8192,
-    .aarch64 => 16384,
-    else => @compileError("SIGSTKSZ not defined for this architecture"),
-};
-
-pub const SS_ONSTACK = 1;
-pub const SS_DISABLE = 2;
-pub const SS_AUTODISARM = 1 << 31;
-
-pub const stack_t = if (is_mips)
-    // IRIX compatible stack_t
-    extern struct {
-        ss_sp: [*]u8,
-        ss_size: usize,
-        ss_flags: i32,
-    }
-else
-    extern struct {
-        ss_sp: [*]u8,
-        ss_flags: i32,
-        ss_size: usize,
-    };
-
-pub const sigval = extern union {
-    int: i32,
-    ptr: *c_void,
-};
-
-const siginfo_fields_union = extern union {
-    pad: [128 - 2 * @sizeOf(c_int) - @sizeOf(c_long)]u8,
-    common: extern struct {
-        first: extern union {
-            piduid: extern struct {
-                pid: pid_t,
-                uid: uid_t,
-            },
-            timer: extern struct {
-                timerid: i32,
-                overrun: i32,
-            },
-        },
-        second: extern union {
-            value: sigval,
-            sigchld: extern struct {
-                status: i32,
-                utime: clock_t,
-                stime: clock_t,
-            },
-        },
-    },
-    sigfault: extern struct {
-        addr: *c_void,
-        addr_lsb: i16,
-        first: extern union {
-            addr_bnd: extern struct {
-                lower: *c_void,
-                upper: *c_void,
-            },
-            pkey: u32,
-        },
-    },
-    sigpoll: extern struct {
-        band: isize,
-        fd: i32,
-    },
-    sigsys: extern struct {
-        call_addr: *c_void,
-        syscall: i32,
-        arch: u32,
-    },
-};
-
-pub const siginfo_t = if (is_mips)
-    extern struct {
-        signo: i32,
-        code: i32,
-        errno: i32,
-        fields: siginfo_fields_union,
-    }
-else
-    extern struct {
-        signo: i32,
-        errno: i32,
-        code: i32,
-        fields: siginfo_fields_union,
-    };
-
-pub const io_uring_params = extern struct {
-    sq_entries: u32,
-    cq_entries: u32,
-    flags: u32,
-    sq_thread_cpu: u32,
-    sq_thread_idle: u32,
-    features: u32,
-    wq_fd: u32,
-    resv: [3]u32,
-    sq_off: io_sqring_offsets,
-    cq_off: io_cqring_offsets,
-};
-
-// io_uring_params.features flags
-
-pub const IORING_FEAT_SINGLE_MMAP = 1 << 0;
-pub const IORING_FEAT_NODROP = 1 << 1;
-pub const IORING_FEAT_SUBMIT_STABLE = 1 << 2;
-pub const IORING_FEAT_RW_CUR_POS = 1 << 3;
-pub const IORING_FEAT_CUR_PERSONALITY = 1 << 4;
-pub const IORING_FEAT_FAST_POLL = 1 << 5;
-pub const IORING_FEAT_POLL_32BITS = 1 << 6;
-
-// io_uring_params.flags
-
-/// io_context is polled
-pub const IORING_SETUP_IOPOLL = 1 << 0;
-
-/// SQ poll thread
-pub const IORING_SETUP_SQPOLL = 1 << 1;
-
-/// sq_thread_cpu is valid
-pub const IORING_SETUP_SQ_AFF = 1 << 2;
-
-/// app defines CQ size
-pub const IORING_SETUP_CQSIZE = 1 << 3;
-
-/// clamp SQ/CQ ring sizes
-pub const IORING_SETUP_CLAMP = 1 << 4;
-
-/// attach to existing wq
-pub const IORING_SETUP_ATTACH_WQ = 1 << 5;
-
-/// start with ring disabled
-pub const IORING_SETUP_R_DISABLED = 1 << 6;
-
-pub const io_sqring_offsets = extern struct {
-    /// offset of ring head
-    head: u32,
-
-    /// offset of ring tail
-    tail: u32,
-
-    /// ring mask value
-    ring_mask: u32,
-
-    /// entries in ring
-    ring_entries: u32,
-
-    /// ring flags
-    flags: u32,
-
-    /// number of sqes not submitted
-    dropped: u32,
-
-    /// sqe index array
-    array: u32,
-
-    resv1: u32,
-    resv2: u64,
-};
-
-// io_sqring_offsets.flags
-
-/// needs io_uring_enter wakeup
-pub const IORING_SQ_NEED_WAKEUP = 1 << 0;
-
-/// kernel has cqes waiting beyond the cq ring
-pub const IORING_SQ_CQ_OVERFLOW = 1 << 1;
-
-pub const io_cqring_offsets = extern struct {
-    head: u32,
-    tail: u32,
-    ring_mask: u32,
-    ring_entries: u32,
-    overflow: u32,
-    cqes: u32,
-    resv: [2]u64,
-};
-
-pub const io_uring_sqe = extern struct {
-    opcode: IORING_OP,
-    flags: u8,
-    ioprio: u16,
-    fd: i32,
-    off: u64,
-    addr: u64,
-    len: u32,
-    rw_flags: u32,
-    user_data: u64,
-    buf_index: u16,
-    personality: u16,
-    splice_fd_in: i32,
-    __pad2: [2]u64,
-};
-
-pub const IOSQE_BIT = enum(u8) {
-    FIXED_FILE,
-    IO_DRAIN,
-    IO_LINK,
-    IO_HARDLINK,
-    ASYNC,
-    BUFFER_SELECT,
-
-    _,
-};
-
-// io_uring_sqe.flags
-
-/// use fixed fileset
-pub const IOSQE_FIXED_FILE = 1 << @enumToInt(IOSQE_BIT.FIXED_FILE);
-
-/// issue after inflight IO
-pub const IOSQE_IO_DRAIN = 1 << @enumToInt(IOSQE_BIT.IO_DRAIN);
-
-/// links next sqe
-pub const IOSQE_IO_LINK = 1 << @enumToInt(IOSQE_BIT.IO_LINK);
-
-/// like LINK, but stronger
-pub const IOSQE_IO_HARDLINK = 1 << @enumToInt(IOSQE_BIT.IO_HARDLINK);
-
-/// always go async
-pub const IOSQE_ASYNC = 1 << @enumToInt(IOSQE_BIT.ASYNC);
-
-/// select buffer from buf_group
-pub const IOSQE_BUFFER_SELECT = 1 << @enumToInt(IOSQE_BIT.BUFFER_SELECT);
-
-pub const IORING_OP = enum(u8) {
-    NOP,
-    READV,
-    WRITEV,
-    FSYNC,
-    READ_FIXED,
-    WRITE_FIXED,
-    POLL_ADD,
-    POLL_REMOVE,
-    SYNC_FILE_RANGE,
-    SENDMSG,
-    RECVMSG,
-    TIMEOUT,
-    TIMEOUT_REMOVE,
-    ACCEPT,
-    ASYNC_CANCEL,
-    LINK_TIMEOUT,
-    CONNECT,
-    FALLOCATE,
-    OPENAT,
-    CLOSE,
-    FILES_UPDATE,
-    STATX,
-    READ,
-    WRITE,
-    FADVISE,
-    MADVISE,
-    SEND,
-    RECV,
-    OPENAT2,
-    EPOLL_CTL,
-    SPLICE,
-    PROVIDE_BUFFERS,
-    REMOVE_BUFFERS,
-    TEE,
-
-    _,
-};
-
-// io_uring_sqe.fsync_flags
-pub const IORING_FSYNC_DATASYNC = 1 << 0;
-
-// io_uring_sqe.timeout_flags
-pub const IORING_TIMEOUT_ABS = 1 << 0;
-
-// IO completion data structure (Completion Queue Entry)
-pub const io_uring_cqe = extern struct {
-    /// io_uring_sqe.data submission passed back
-    user_data: u64,
-
-    /// result code for this event
-    res: i32,
-    flags: u32,
-
-    pub fn err(self: io_uring_cqe) E {
-        if (self.res > -4096 and self.res < 0) {
-            return @intToEnum(E, -self.res);
-        }
-        return .SUCCESS;
-    }
-};
-
-// io_uring_cqe.flags
-
-/// If set, the upper 16 bits are the buffer ID
-pub const IORING_CQE_F_BUFFER = 1 << 0;
-
-pub const IORING_OFF_SQ_RING = 0;
-pub const IORING_OFF_CQ_RING = 0x8000000;
-pub const IORING_OFF_SQES = 0x10000000;
-
-// io_uring_enter flags
-pub const IORING_ENTER_GETEVENTS = 1 << 0;
-pub const IORING_ENTER_SQ_WAKEUP = 1 << 1;
-
-// io_uring_register opcodes and arguments
-pub const IORING_REGISTER = enum(u8) {
-    REGISTER_BUFFERS,
-    UNREGISTER_BUFFERS,
-    REGISTER_FILES,
-    UNREGISTER_FILES,
-    REGISTER_EVENTFD,
-    UNREGISTER_EVENTFD,
-    REGISTER_FILES_UPDATE,
-    REGISTER_EVENTFD_ASYNC,
-    REGISTER_PROBE,
-    REGISTER_PERSONALITY,
-    UNREGISTER_PERSONALITY,
-    REGISTER_RESTRICTIONS,
-    REGISTER_ENABLE_RINGS,
-
-    _,
-};
-
-pub const io_uring_files_update = extern struct {
-    offset: u32,
-    resv: u32,
-    fds: u64,
-};
-
-pub const IO_URING_OP_SUPPORTED = 1 << 0;
-
-pub const io_uring_probe_op = extern struct {
-    op: IORING_OP,
-
-    resv: u8,
-
-    /// IO_URING_OP_* flags
-    flags: u16,
-
-    resv2: u32,
-};
-
-pub const io_uring_probe = extern struct {
-    /// last opcode supported
-    last_op: IORING_OP,
-
-    /// Number of io_uring_probe_op following
-    ops_len: u8,
-
-    resv: u16,
-    resv2: u32[3],
-
-    // Followed by up to `ops_len` io_uring_probe_op structures
-};
-
-pub const io_uring_restriction = extern struct {
-    opcode: u16,
-    arg: extern union {
-        /// IORING_RESTRICTION_REGISTER_OP
-        register_op: IORING_REGISTER,
-
-        /// IORING_RESTRICTION_SQE_OP
-        sqe_op: IORING_OP,
-
-        /// IORING_RESTRICTION_SQE_FLAGS_*
-        sqe_flags: u8,
-    },
-    resv: u8,
-    resv2: u32[3],
-};
-
-/// io_uring_restriction->opcode values
-pub const IORING_RESTRICTION = enum(u8) {
-    /// Allow an io_uring_register(2) opcode
-    REGISTER_OP = 0,
-
-    /// Allow an sqe opcode
-    SQE_OP = 1,
-
-    /// Allow sqe flags
-    SQE_FLAGS_ALLOWED = 2,
-
-    /// Require sqe flags (these flags must be set on each submission)
-    SQE_FLAGS_REQUIRED = 3,
-
-    _,
-};
-
-pub const utsname = extern struct {
-    sysname: [64:0]u8,
-    nodename: [64:0]u8,
-    release: [64:0]u8,
-    version: [64:0]u8,
-    machine: [64:0]u8,
-    domainname: [64:0]u8,
-};
-pub const HOST_NAME_MAX = 64;
-
-pub const STATX_TYPE = 0x0001;
-pub const STATX_MODE = 0x0002;
-pub const STATX_NLINK = 0x0004;
-pub const STATX_UID = 0x0008;
-pub const STATX_GID = 0x0010;
-pub const STATX_ATIME = 0x0020;
-pub const STATX_MTIME = 0x0040;
-pub const STATX_CTIME = 0x0080;
-pub const STATX_INO = 0x0100;
-pub const STATX_SIZE = 0x0200;
-pub const STATX_BLOCKS = 0x0400;
-pub const STATX_BASIC_STATS = 0x07ff;
-
-pub const STATX_BTIME = 0x0800;
-
-pub const STATX_ATTR_COMPRESSED = 0x0004;
-pub const STATX_ATTR_IMMUTABLE = 0x0010;
-pub const STATX_ATTR_APPEND = 0x0020;
-pub const STATX_ATTR_NODUMP = 0x0040;
-pub const STATX_ATTR_ENCRYPTED = 0x0800;
-pub const STATX_ATTR_AUTOMOUNT = 0x1000;
-
-pub const statx_timestamp = extern struct {
-    tv_sec: i64,
-    tv_nsec: u32,
-    __pad1: u32,
-};
-
-/// Renamed to `Statx` to not conflict with the `statx` function.
-pub const Statx = extern struct {
-    /// Mask of bits indicating filled fields
-    mask: u32,
-
-    /// Block size for filesystem I/O
-    blksize: u32,
-
-    /// Extra file attribute indicators
-    attributes: u64,
-
-    /// Number of hard links
-    nlink: u32,
-
-    /// User ID of owner
-    uid: uid_t,
-
-    /// Group ID of owner
-    gid: gid_t,
-
-    /// File type and mode
-    mode: u16,
-    __pad1: u16,
-
-    /// Inode number
-    ino: u64,
-
-    /// Total size in bytes
-    size: u64,
-
-    /// Number of 512B blocks allocated
-    blocks: u64,
-
-    /// Mask to show what's supported in `attributes`.
-    attributes_mask: u64,
-
-    /// Last access file timestamp
-    atime: statx_timestamp,
-
-    /// Creation file timestamp
-    btime: statx_timestamp,
-
-    /// Last status change file timestamp
-    ctime: statx_timestamp,
-
-    /// Last modification file timestamp
-    mtime: statx_timestamp,
-
-    /// Major ID, if this file represents a device.
-    rdev_major: u32,
-
-    /// Minor ID, if this file represents a device.
-    rdev_minor: u32,
-
-    /// Major ID of the device containing the filesystem where this file resides.
-    dev_major: u32,
-
-    /// Minor ID of the device containing the filesystem where this file resides.
-    dev_minor: u32,
-
-    __pad2: [14]u64,
-};
-
-pub const addrinfo = extern struct {
-    flags: i32,
-    family: i32,
-    socktype: i32,
-    protocol: i32,
-    addrlen: socklen_t,
-    addr: ?*sockaddr,
-    canonname: ?[*:0]u8,
-    next: ?*addrinfo,
-};
-
-pub const IPPORT_RESERVED = 1024;
-
-pub const IPPROTO_IP = 0;
-pub const IPPROTO_HOPOPTS = 0;
-pub const IPPROTO_ICMP = 1;
-pub const IPPROTO_IGMP = 2;
-pub const IPPROTO_IPIP = 4;
-pub const IPPROTO_TCP = 6;
-pub const IPPROTO_EGP = 8;
-pub const IPPROTO_PUP = 12;
-pub const IPPROTO_UDP = 17;
-pub const IPPROTO_IDP = 22;
-pub const IPPROTO_TP = 29;
-pub const IPPROTO_DCCP = 33;
-pub const IPPROTO_IPV6 = 41;
-pub const IPPROTO_ROUTING = 43;
-pub const IPPROTO_FRAGMENT = 44;
-pub const IPPROTO_RSVP = 46;
-pub const IPPROTO_GRE = 47;
-pub const IPPROTO_ESP = 50;
-pub const IPPROTO_AH = 51;
-pub const IPPROTO_ICMPV6 = 58;
-pub const IPPROTO_NONE = 59;
-pub const IPPROTO_DSTOPTS = 60;
-pub const IPPROTO_MTP = 92;
-pub const IPPROTO_BEETPH = 94;
-pub const IPPROTO_ENCAP = 98;
-pub const IPPROTO_PIM = 103;
-pub const IPPROTO_COMP = 108;
-pub const IPPROTO_SCTP = 132;
-pub const IPPROTO_MH = 135;
-pub const IPPROTO_UDPLITE = 136;
-pub const IPPROTO_MPLS = 137;
-pub const IPPROTO_RAW = 255;
-pub const IPPROTO_MAX = 256;
-
-pub const RR_A = 1;
-pub const RR_CNAME = 5;
-pub const RR_AAAA = 28;
-
-/// Turn off Nagle's algorithm
-pub const TCP_NODELAY = 1;
-/// Limit MSS
-pub const TCP_MAXSEG = 2;
-/// Never send partially complete segments.
-pub const TCP_CORK = 3;
-/// Start keeplives after this period, in seconds
-pub const TCP_KEEPIDLE = 4;
-/// Interval between keepalives
-pub const TCP_KEEPINTVL = 5;
-/// Number of keepalives before death
-pub const TCP_KEEPCNT = 6;
-/// Number of SYN retransmits
-pub const TCP_SYNCNT = 7;
-/// Life time of orphaned FIN-WAIT-2 state
-pub const TCP_LINGER2 = 8;
-/// Wake up listener only when data arrive
-pub const TCP_DEFER_ACCEPT = 9;
-/// Bound advertised window
-pub const TCP_WINDOW_CLAMP = 10;
-/// Information about this connection.
-pub const TCP_INFO = 11;
-/// Block/reenable quick acks
-pub const TCP_QUICKACK = 12;
-/// Congestion control algorithm
-pub const TCP_CONGESTION = 13;
-/// TCP MD5 Signature (RFC2385)
-pub const TCP_MD5SIG = 14;
-/// Use linear timeouts for thin streams
-pub const TCP_THIN_LINEAR_TIMEOUTS = 16;
-/// Fast retrans. after 1 dupack
-pub const TCP_THIN_DUPACK = 17;
-/// How long for loss retry before timeout
-pub const TCP_USER_TIMEOUT = 18;
-/// TCP sock is under repair right now
-pub const TCP_REPAIR = 19;
-pub const TCP_REPAIR_QUEUE = 20;
-pub const TCP_QUEUE_SEQ = 21;
-pub const TCP_REPAIR_OPTIONS = 22;
-/// Enable FastOpen on listeners
-pub const TCP_FASTOPEN = 23;
-pub const TCP_TIMESTAMP = 24;
-/// limit number of unsent bytes in write queue
-pub const TCP_NOTSENT_LOWAT = 25;
-/// Get Congestion Control (optional) info
-pub const TCP_CC_INFO = 26;
-/// Record SYN headers for new connections
-pub const TCP_SAVE_SYN = 27;
-/// Get SYN headers recorded for connection
-pub const TCP_SAVED_SYN = 28;
-/// Get/set window parameters
-pub const TCP_REPAIR_WINDOW = 29;
-/// Attempt FastOpen with connect
-pub const TCP_FASTOPEN_CONNECT = 30;
-/// Attach a ULP to a TCP connection
-pub const TCP_ULP = 31;
-/// TCP MD5 Signature with extensions
-pub const TCP_MD5SIG_EXT = 32;
-/// Set the key for Fast Open (cookie)
-pub const TCP_FASTOPEN_KEY = 33;
-/// Enable TFO without a TFO cookie
-pub const TCP_FASTOPEN_NO_COOKIE = 34;
-pub const TCP_ZEROCOPY_RECEIVE = 35;
-/// Notify bytes available to read as a cmsg on read
-pub const TCP_INQ = 36;
-pub const TCP_CM_INQ = TCP_INQ;
-/// delay outgoing packets by XX usec
-pub const TCP_TX_DELAY = 37;
-
-pub const TCP_REPAIR_ON = 1;
-pub const TCP_REPAIR_OFF = 0;
-/// Turn off without window probes
-pub const TCP_REPAIR_OFF_NO_WP = -1;
-
-pub const tcp_repair_opt = extern struct {
-    opt_code: u32,
-    opt_val: u32,
-};
-
-pub const tcp_repair_window = extern struct {
-    snd_wl1: u32,
-    snd_wnd: u32,
-    max_window: u32,
-    rcv_wnd: u32,
-    rcv_wup: u32,
-};
-
-pub const TcpRepairOption = enum {
-    TCP_NO_QUEUE,
-    TCP_RECV_QUEUE,
-    TCP_SEND_QUEUE,
-    TCP_QUEUES_NR,
-};
-
-/// why fastopen failed from client perspective
-pub const tcp_fastopen_client_fail = enum {
-    /// catch-all
-    TFO_STATUS_UNSPEC,
-    /// if not in TFO_CLIENT_NO_COOKIE mode
-    TFO_COOKIE_UNAVAILABLE,
-    /// SYN-ACK did not ack SYN data
-    TFO_DATA_NOT_ACKED,
-    /// SYN-ACK did not ack SYN data after timeout
-    TFO_SYN_RETRANSMITTED,
-};
-
-/// for TCP_INFO socket option
-pub const TCPI_OPT_TIMESTAMPS = 1;
-pub const TCPI_OPT_SACK = 2;
-pub const TCPI_OPT_WSCALE = 4;
-/// ECN was negociated at TCP session init
-pub const TCPI_OPT_ECN = 8;
-/// we received at least one packet with ECT
-pub const TCPI_OPT_ECN_SEEN = 16;
-/// SYN-ACK acked data in SYN sent or rcvd
-pub const TCPI_OPT_SYN_DATA = 32;
-
-pub const nfds_t = usize;
-pub const pollfd = extern struct {
-    fd: fd_t,
-    events: i16,
-    revents: i16,
-};
-
-pub const POLLIN = 0x001;
-pub const POLLPRI = 0x002;
-pub const POLLOUT = 0x004;
-pub const POLLERR = 0x008;
-pub const POLLHUP = 0x010;
-pub const POLLNVAL = 0x020;
-pub const POLLRDNORM = 0x040;
-pub const POLLRDBAND = 0x080;
-
-pub const MFD_CLOEXEC = 0x0001;
-pub const MFD_ALLOW_SEALING = 0x0002;
-pub const MFD_HUGETLB = 0x0004;
-pub const MFD_ALL_FLAGS = MFD_CLOEXEC | MFD_ALLOW_SEALING | MFD_HUGETLB;
-
-pub const HUGETLB_FLAG_ENCODE_SHIFT = 26;
-pub const HUGETLB_FLAG_ENCODE_MASK = 0x3f;
-pub const HUGETLB_FLAG_ENCODE_64KB = 16 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_512KB = 19 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_1MB = 20 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_2MB = 21 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_8MB = 23 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_16MB = 24 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_32MB = 25 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_256MB = 28 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_512MB = 29 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_1GB = 30 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_2GB = 31 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_16GB = 34 << HUGETLB_FLAG_ENCODE_SHIFT;
-
-pub const MFD_HUGE_SHIFT = HUGETLB_FLAG_ENCODE_SHIFT;
-pub const MFD_HUGE_MASK = HUGETLB_FLAG_ENCODE_MASK;
-pub const MFD_HUGE_64KB = HUGETLB_FLAG_ENCODE_64KB;
-pub const MFD_HUGE_512KB = HUGETLB_FLAG_ENCODE_512KB;
-pub const MFD_HUGE_1MB = HUGETLB_FLAG_ENCODE_1MB;
-pub const MFD_HUGE_2MB = HUGETLB_FLAG_ENCODE_2MB;
-pub const MFD_HUGE_8MB = HUGETLB_FLAG_ENCODE_8MB;
-pub const MFD_HUGE_16MB = HUGETLB_FLAG_ENCODE_16MB;
-pub const MFD_HUGE_32MB = HUGETLB_FLAG_ENCODE_32MB;
-pub const MFD_HUGE_256MB = HUGETLB_FLAG_ENCODE_256MB;
-pub const MFD_HUGE_512MB = HUGETLB_FLAG_ENCODE_512MB;
-pub const MFD_HUGE_1GB = HUGETLB_FLAG_ENCODE_1GB;
-pub const MFD_HUGE_2GB = HUGETLB_FLAG_ENCODE_2GB;
-pub const MFD_HUGE_16GB = HUGETLB_FLAG_ENCODE_16GB;
-
-pub const RUSAGE_SELF = 0;
-pub const RUSAGE_CHILDREN = -1;
-pub const RUSAGE_THREAD = 1;
-
-pub const rusage = extern struct {
-    utime: timeval,
-    stime: timeval,
-    maxrss: isize,
-    ixrss: isize,
-    idrss: isize,
-    isrss: isize,
-    minflt: isize,
-    majflt: isize,
-    nswap: isize,
-    inblock: isize,
-    oublock: isize,
-    msgsnd: isize,
-    msgrcv: isize,
-    nsignals: isize,
-    nvcsw: isize,
-    nivcsw: isize,
-    __reserved: [16]isize = [1]isize{0} ** 16,
-};
-
-pub const cc_t = u8;
-pub const speed_t = u32;
-pub const tcflag_t = u32;
-
-pub const NCCS = 32;
-
-pub const B0 = 0o0000000;
-pub const B50 = 0o0000001;
-pub const B75 = 0o0000002;
-pub const B110 = 0o0000003;
-pub const B134 = 0o0000004;
-pub const B150 = 0o0000005;
-pub const B200 = 0o0000006;
-pub const B300 = 0o0000007;
-pub const B600 = 0o0000010;
-pub const B1200 = 0o0000011;
-pub const B1800 = 0o0000012;
-pub const B2400 = 0o0000013;
-pub const B4800 = 0o0000014;
-pub const B9600 = 0o0000015;
-pub const B19200 = 0o0000016;
-pub const B38400 = 0o0000017;
-pub const BOTHER = 0o0010000;
-pub const B57600 = 0o0010001;
-pub const B115200 = 0o0010002;
-pub const B230400 = 0o0010003;
-pub const B460800 = 0o0010004;
-pub const B500000 = 0o0010005;
-pub const B576000 = 0o0010006;
-pub const B921600 = 0o0010007;
-pub const B1000000 = 0o0010010;
-pub const B1152000 = 0o0010011;
-pub const B1500000 = 0o0010012;
-pub const B2000000 = 0o0010013;
-pub const B2500000 = 0o0010014;
-pub const B3000000 = 0o0010015;
-pub const B3500000 = 0o0010016;
-pub const B4000000 = 0o0010017;
-
-pub usingnamespace switch (arch) {
-    .powerpc, .powerpc64, .powerpc64le => struct {
-        pub const VINTR = 0;
-        pub const VQUIT = 1;
-        pub const VERASE = 2;
-        pub const VKILL = 3;
-        pub const VEOF = 4;
-        pub const VMIN = 5;
-        pub const VEOL = 6;
-        pub const VTIME = 7;
-        pub const VEOL2 = 8;
-        pub const VSWTC = 9;
-        pub const VWERASE = 10;
-        pub const VREPRINT = 11;
-        pub const VSUSP = 12;
-        pub const VSTART = 13;
-        pub const VSTOP = 14;
-        pub const VLNEXT = 15;
-        pub const VDISCARD = 16;
-    },
-    .sparc, .sparcv9 => struct {
-        pub const VINTR = 0;
-        pub const VQUIT = 1;
-        pub const VERASE = 2;
-        pub const VKILL = 3;
-        pub const VEOF = 4;
-        pub const VEOL = 5;
-        pub const VEOL2 = 6;
-        pub const VSWTC = 7;
-        pub const VSTART = 8;
-        pub const VSTOP = 9;
-        pub const VSUSP = 10;
-        pub const VDSUSP = 11;
-        pub const VREPRINT = 12;
-        pub const VDISCARD = 13;
-        pub const VWERASE = 14;
-        pub const VLNEXT = 15;
-        pub const VMIN = VEOF;
-        pub const VTIME = VEOL;
-    },
-    .mips, .mipsel, .mips64, .mips64el => struct {
-        pub const VINTR = 0;
-        pub const VQUIT = 1;
-        pub const VERASE = 2;
-        pub const VKILL = 3;
-        pub const VMIN = 4;
-        pub const VTIME = 5;
-        pub const VEOL2 = 6;
-        pub const VSWTC = 7;
-        pub const VSWTCH = 7;
-        pub const VSTART = 8;
-        pub const VSTOP = 9;
-        pub const VSUSP = 10;
-        pub const VREPRINT = 12;
-        pub const VDISCARD = 13;
-        pub const VWERASE = 14;
-        pub const VLNEXT = 15;
-        pub const VEOF = 16;
-        pub const VEOL = 17;
-    },
-    else => struct {
-        pub const VINTR = 0;
-        pub const VQUIT = 1;
-        pub const VERASE = 2;
-        pub const VKILL = 3;
-        pub const VEOF = 4;
-        pub const VTIME = 5;
-        pub const VMIN = 6;
-        pub const VSWTC = 7;
-        pub const VSTART = 8;
-        pub const VSTOP = 9;
-        pub const VSUSP = 10;
-        pub const VEOL = 11;
-        pub const VREPRINT = 12;
-        pub const VDISCARD = 13;
-        pub const VWERASE = 14;
-        pub const VLNEXT = 15;
-        pub const VEOL2 = 16;
-    },
-};
-
-pub const IGNBRK = 1;
-pub const BRKINT = 2;
-pub const IGNPAR = 4;
-pub const PARMRK = 8;
-pub const INPCK = 16;
-pub const ISTRIP = 32;
-pub const INLCR = 64;
-pub const IGNCR = 128;
-pub const ICRNL = 256;
-pub const IUCLC = 512;
-pub const IXON = 1024;
-pub const IXANY = 2048;
-pub const IXOFF = 4096;
-pub const IMAXBEL = 8192;
-pub const IUTF8 = 16384;
-
-pub const OPOST = 1;
-pub const OLCUC = 2;
-pub const ONLCR = 4;
-pub const OCRNL = 8;
-pub const ONOCR = 16;
-pub const ONLRET = 32;
-pub const OFILL = 64;
-pub const OFDEL = 128;
-pub const VTDLY = 16384;
-pub const VT0 = 0;
-pub const VT1 = 16384;
-
-pub const CSIZE = 48;
-pub const CS5 = 0;
-pub const CS6 = 16;
-pub const CS7 = 32;
-pub const CS8 = 48;
-pub const CSTOPB = 64;
-pub const CREAD = 128;
-pub const PARENB = 256;
-pub const PARODD = 512;
-pub const HUPCL = 1024;
-pub const CLOCAL = 2048;
-
-pub const ISIG = 1;
-pub const ICANON = 2;
-pub const ECHO = 8;
-pub const ECHOE = 16;
-pub const ECHOK = 32;
-pub const ECHONL = 64;
-pub const NOFLSH = 128;
-pub const TOSTOP = 256;
-pub const IEXTEN = 32768;
-
-pub const TCSA = enum(c_uint) {
-    NOW,
-    DRAIN,
-    FLUSH,
-    _,
-};
-
-pub const termios = extern struct {
-    iflag: tcflag_t,
-    oflag: tcflag_t,
-    cflag: tcflag_t,
-    lflag: tcflag_t,
-    line: cc_t,
-    cc: [NCCS]cc_t,
-    ispeed: speed_t,
-    ospeed: speed_t,
-};
-
-pub const SIOCGIFINDEX = 0x8933;
-pub const IFNAMESIZE = 16;
-
-pub const ifmap = extern struct {
-    mem_start: u32,
-    mem_end: u32,
-    base_addr: u16,
-    irq: u8,
-    dma: u8,
-    port: u8,
-};
-
-pub const ifreq = extern struct {
-    ifrn: extern union {
-        name: [IFNAMESIZE]u8,
-    },
-    ifru: extern union {
-        addr: sockaddr,
-        dstaddr: sockaddr,
-        broadaddr: sockaddr,
-        netmask: sockaddr,
-        hwaddr: sockaddr,
-        flags: i16,
-        ivalue: i32,
-        mtu: i32,
-        map: ifmap,
-        slave: [IFNAMESIZE - 1:0]u8,
-        newname: [IFNAMESIZE - 1:0]u8,
-        data: ?[*]u8,
-    },
-};
-
-// doc comments copied from musl
-pub const rlimit_resource = enum(c_int) {
-    /// Per-process CPU limit, in seconds.
-    CPU,
-
-    /// Largest file that can be created, in bytes.
-    FSIZE,
-
-    /// Maximum size of data segment, in bytes.
-    DATA,
-
-    /// Maximum size of stack segment, in bytes.
-    STACK,
-
-    /// Largest core file that can be created, in bytes.
-    CORE,
-
-    /// Largest resident set size, in bytes.
-    /// This affects swapping; processes that are exceeding their
-    /// resident set size will be more likely to have physical memory
-    /// taken from them.
-    RSS,
-
-    /// Number of processes.
-    NPROC,
-
-    /// Number of open files.
-    NOFILE,
-
-    /// Locked-in-memory address space.
-    MEMLOCK,
-
-    /// Address space limit.
-    AS,
-
-    /// Maximum number of file locks.
-    LOCKS,
-
-    /// Maximum number of pending signals.
-    SIGPENDING,
-
-    /// Maximum bytes in POSIX message queues.
-    MSGQUEUE,
-
-    /// Maximum nice priority allowed to raise to.
-    /// Nice levels 19 .. -20 correspond to 0 .. 39
-    /// values of this resource limit.
-    NICE,
-
-    /// Maximum realtime priority allowed for non-priviledged
-    /// processes.
-    RTPRIO,
-
-    /// Maximum CPU time in µs that a process scheduled under a real-time
-    /// scheduling policy may consume without making a blocking system
-    /// call before being forcibly descheduled.
-    RTTIME,
-
-    _,
-};
-
-pub const rlim_t = u64;
-
-/// No limit
-pub const RLIM_INFINITY = ~@as(rlim_t, 0);
-
-pub const RLIM_SAVED_MAX = RLIM_INFINITY;
-pub const RLIM_SAVED_CUR = RLIM_INFINITY;
-
-pub const rlimit = extern struct {
-    /// Soft limit
-    cur: rlim_t,
-    /// Hard limit
-    max: rlim_t,
-};
-
-pub const MADV_NORMAL = 0;
-pub const MADV_RANDOM = 1;
-pub const MADV_SEQUENTIAL = 2;
-pub const MADV_WILLNEED = 3;
-pub const MADV_DONTNEED = 4;
-pub const MADV_FREE = 8;
-pub const MADV_REMOVE = 9;
-pub const MADV_DONTFORK = 10;
-pub const MADV_DOFORK = 11;
-pub const MADV_MERGEABLE = 12;
-pub const MADV_UNMERGEABLE = 13;
-pub const MADV_HUGEPAGE = 14;
-pub const MADV_NOHUGEPAGE = 15;
-pub const MADV_DONTDUMP = 16;
-pub const MADV_DODUMP = 17;
-pub const MADV_WIPEONFORK = 18;
-pub const MADV_KEEPONFORK = 19;
-pub const MADV_COLD = 20;
-pub const MADV_PAGEOUT = 21;
-pub const MADV_HWPOISON = 100;
-pub const MADV_SOFT_OFFLINE = 101;
-
-pub const POSIX_FADV_NORMAL = 0;
-pub const POSIX_FADV_RANDOM = 1;
-pub const POSIX_FADV_SEQUENTIAL = 2;
-pub const POSIX_FADV_WILLNEED = 3;
-pub usingnamespace switch (arch) {
-    .s390x => if (@typeInfo(usize).Int.bits == 64)
-        struct {
-            pub const POSIX_FADV_DONTNEED = 6;
-            pub const POSIX_FADV_NOREUSE = 7;
-        }
-    else
-        struct {
-            pub const POSIX_FADV_DONTNEED = 4;
-            pub const POSIX_FADV_NOREUSE = 5;
-        },
-    else => struct {
-        pub const POSIX_FADV_DONTNEED = 4;
-        pub const POSIX_FADV_NOREUSE = 5;
-    },
-};
-
-pub const __kernel_timespec = extern struct {
-    tv_sec: i64,
-    tv_nsec: i64,
-};
diff --git a/lib/std/os/bits/linux/i386.zig b/lib/std/os/bits/linux/i386.zig
index 12c8fa4713..723a249177 100644
--- a/lib/std/os/bits/linux/i386.zig
+++ b/lib/std/os/bits/linux/i386.zig
@@ -448,94 +448,145 @@ pub const SYS = enum(usize) {
     _,
 };
 
-pub const O_CREAT = 0o100;
-pub const O_EXCL = 0o200;
-pub const O_NOCTTY = 0o400;
-pub const O_TRUNC = 0o1000;
-pub const O_APPEND = 0o2000;
-pub const O_NONBLOCK = 0o4000;
-pub const O_DSYNC = 0o10000;
-pub const O_SYNC = 0o4010000;
-pub const O_RSYNC = 0o4010000;
-pub const O_DIRECTORY = 0o200000;
-pub const O_NOFOLLOW = 0o400000;
-pub const O_CLOEXEC = 0o2000000;
+pub const O = struct {
+    pub const RDONLY = 0o0;
+    pub const WRONLY = 0o1;
+    pub const RDWR = 0o2;
 
-pub const O_ASYNC = 0o20000;
-pub const O_DIRECT = 0o40000;
-pub const O_LARGEFILE = 0o100000;
-pub const O_NOATIME = 0o1000000;
-pub const O_PATH = 0o10000000;
-pub const O_TMPFILE = 0o20200000;
-pub const O_NDELAY = O_NONBLOCK;
+    pub const CREAT = 0o100;
+    pub const EXCL = 0o200;
+    pub const NOCTTY = 0o400;
+    pub const TRUNC = 0o1000;
+    pub const APPEND = 0o2000;
+    pub const NONBLOCK = 0o4000;
+    pub const DSYNC = 0o10000;
+    pub const SYNC = 0o4010000;
+    pub const RSYNC = 0o4010000;
+    pub const DIRECTORY = 0o200000;
+    pub const NOFOLLOW = 0o400000;
+    pub const CLOEXEC = 0o2000000;
 
-pub const F_DUPFD = 0;
-pub const F_GETFD = 1;
-pub const F_SETFD = 2;
-pub const F_GETFL = 3;
-pub const F_SETFL = 4;
+    pub const ASYNC = 0o20000;
+    pub const DIRECT = 0o40000;
+    pub const LARGEFILE = 0o100000;
+    pub const NOATIME = 0o1000000;
+    pub const PATH = 0o10000000;
+    pub const TMPFILE = 0o20200000;
+    pub const NDELAY = NONBLOCK;
+};
 
-pub const F_SETOWN = 8;
-pub const F_GETOWN = 9;
-pub const F_SETSIG = 10;
-pub const F_GETSIG = 11;
+pub const F = struct {
+    pub const DUPFD = 0;
+    pub const GETFD = 1;
+    pub const SETFD = 2;
+    pub const GETFL = 3;
+    pub const SETFL = 4;
+    pub const SETOWN = 8;
+    pub const GETOWN = 9;
+    pub const SETSIG = 10;
+    pub const GETSIG = 11;
+    pub const GETLK = 12;
+    pub const SETLK = 13;
+    pub const SETLKW = 14;
+    pub const SETOWN_EX = 15;
+    pub const GETOWN_EX = 16;
+    pub const GETOWNER_UIDS = 17;
 
-pub const F_GETLK = 12;
-pub const F_SETLK = 13;
-pub const F_SETLKW = 14;
+    pub const RDLCK = 0;
+    pub const WRLCK = 1;
+    pub const UNLCK = 2;
+};
 
-pub const F_RDLCK = 0;
-pub const F_WRLCK = 1;
-pub const F_UNLCK = 2;
+pub const LOCK = struct {
+    pub const SH = 1;
+    pub const EX = 2;
+    pub const NB = 4;
+    pub const UN = 8;
+};
 
-pub const LOCK_SH = 1;
-pub const LOCK_EX = 2;
-pub const LOCK_UN = 8;
-pub const LOCK_NB = 4;
+pub const MAP = struct {
+    /// Share changes
+    pub const SHARED = 0x01;
 
-pub const F_SETOWN_EX = 15;
-pub const F_GETOWN_EX = 16;
+    /// Changes are private
+    pub const PRIVATE = 0x02;
 
-pub const F_GETOWNER_UIDS = 17;
+    /// share + validate extension flags
+    pub const SHARED_VALIDATE = 0x03;
 
-pub const MAP_NORESERVE = 0x4000;
-pub const MAP_GROWSDOWN = 0x0100;
-pub const MAP_DENYWRITE = 0x0800;
-pub const MAP_EXECUTABLE = 0x1000;
-pub const MAP_LOCKED = 0x2000;
-pub const MAP_32BIT = 0x40;
+    /// Mask for type of mapping
+    pub const TYPE = 0x0f;
+
+    /// Interpret addr exactly
+    pub const FIXED = 0x10;
+
+    /// don't use a file
+    pub const ANONYMOUS = if (is_mips) 0x800 else 0x20;
+
+    /// populate (prefault) pagetables
+    pub const POPULATE = if (is_mips) 0x10000 else 0x8000;
+
+    /// do not block on IO
+    pub const NONBLOCK = if (is_mips) 0x20000 else 0x10000;
+
+    /// give out an address that is best suited for process/thread stacks
+    pub const STACK = if (is_mips) 0x40000 else 0x20000;
+
+    /// create a huge page mapping
+    pub const HUGETLB = if (is_mips) 0x80000 else 0x40000;
+
+    /// perform synchronous page faults for the mapping
+    pub const SYNC = 0x80000;
+
+    /// FIXED which doesn't unmap underlying mapping
+    pub const FIXED_NOREPLACE = 0x100000;
+
+    /// For anonymous mmap, memory could be uninitialized
+    pub const UNINITIALIZED = 0x4000000;
+
+    pub const NORESERVE = 0x4000;
+    pub const GROWSDOWN = 0x0100;
+    pub const DENYWRITE = 0x0800;
+    pub const EXECUTABLE = 0x1000;
+    pub const LOCKED = 0x2000;
+    pub const @"32BIT" = 0x40;
+};
 
 pub const MMAP2_UNIT = 4096;
 
-pub const VDSO_CGT_SYM = "__vdso_clock_gettime";
-pub const VDSO_CGT_VER = "LINUX_2.6";
+pub const VDSO = struct {
+    pub const CGT_SYM = "__vdso_clock_gettime";
+    pub const CGT_VER = "LINUX_2.6";
+};
+
+pub const ARCH = struct {};
 
 pub const Flock = extern struct {
-    l_type: i16,
-    l_whence: i16,
-    l_start: off_t,
-    l_len: off_t,
-    l_pid: pid_t,
+    type: i16,
+    whence: i16,
+    start: off_t,
+    len: off_t,
+    pid: pid_t,
 };
 
 pub const msghdr = extern struct {
-    msg_name: ?*sockaddr,
-    msg_namelen: socklen_t,
-    msg_iov: [*]iovec,
-    msg_iovlen: i32,
-    msg_control: ?*c_void,
-    msg_controllen: socklen_t,
-    msg_flags: i32,
+    name: ?*sockaddr,
+    namelen: socklen_t,
+    iov: [*]iovec,
+    iovlen: i32,
+    control: ?*c_void,
+    controllen: socklen_t,
+    flags: i32,
 };
 
 pub const msghdr_const = extern struct {
-    msg_name: ?*const sockaddr,
-    msg_namelen: socklen_t,
-    msg_iov: [*]iovec_const,
-    msg_iovlen: i32,
-    msg_control: ?*c_void,
-    msg_controllen: socklen_t,
-    msg_flags: i32,
+    name: ?*const sockaddr,
+    namelen: socklen_t,
+    iov: [*]iovec_const,
+    iovlen: i32,
+    control: ?*c_void,
+    controllen: socklen_t,
+    flags: i32,
 };
 
 pub const blksize_t = i32;
@@ -604,25 +655,27 @@ pub const mcontext_t = extern struct {
     cr2: usize,
 };
 
-pub const REG_GS = 0;
-pub const REG_FS = 1;
-pub const REG_ES = 2;
-pub const REG_DS = 3;
-pub const REG_EDI = 4;
-pub const REG_ESI = 5;
-pub const REG_EBP = 6;
-pub const REG_ESP = 7;
-pub const REG_EBX = 8;
-pub const REG_EDX = 9;
-pub const REG_ECX = 10;
-pub const REG_EAX = 11;
-pub const REG_TRAPNO = 12;
-pub const REG_ERR = 13;
-pub const REG_EIP = 14;
-pub const REG_CS = 15;
-pub const REG_EFL = 16;
-pub const REG_UESP = 17;
-pub const REG_SS = 18;
+pub const REG = struct {
+    pub const GS = 0;
+    pub const FS = 1;
+    pub const ES = 2;
+    pub const DS = 3;
+    pub const EDI = 4;
+    pub const ESI = 5;
+    pub const EBP = 6;
+    pub const ESP = 7;
+    pub const EBX = 8;
+    pub const EDX = 9;
+    pub const ECX = 10;
+    pub const EAX = 11;
+    pub const TRAPNO = 12;
+    pub const ERR = 13;
+    pub const EIP = 14;
+    pub const CS = 15;
+    pub const EFL = 16;
+    pub const UESP = 17;
+    pub const SS = 18;
+};
 
 pub const ucontext_t = extern struct {
     flags: usize,
@@ -647,24 +700,26 @@ pub const user_desc = packed struct {
     useable: u1,
 };
 
-// socketcall() call numbers
-pub const SC_socket = 1;
-pub const SC_bind = 2;
-pub const SC_connect = 3;
-pub const SC_listen = 4;
-pub const SC_accept = 5;
-pub const SC_getsockname = 6;
-pub const SC_getpeername = 7;
-pub const SC_socketpair = 8;
-pub const SC_send = 9;
-pub const SC_recv = 10;
-pub const SC_sendto = 11;
-pub const SC_recvfrom = 12;
-pub const SC_shutdown = 13;
-pub const SC_setsockopt = 14;
-pub const SC_getsockopt = 15;
-pub const SC_sendmsg = 16;
-pub const SC_recvmsg = 17;
-pub const SC_accept4 = 18;
-pub const SC_recvmmsg = 19;
-pub const SC_sendmmsg = 20;
+/// socketcall() call numbers
+pub const SC = struct {
+    pub const socket = 1;
+    pub const bind = 2;
+    pub const connect = 3;
+    pub const listen = 4;
+    pub const accept = 5;
+    pub const getsockname = 6;
+    pub const getpeername = 7;
+    pub const socketpair = 8;
+    pub const send = 9;
+    pub const recv = 10;
+    pub const sendto = 11;
+    pub const recvfrom = 12;
+    pub const shutdown = 13;
+    pub const setsockopt = 14;
+    pub const getsockopt = 15;
+    pub const sendmsg = 16;
+    pub const recvmsg = 17;
+    pub const accept4 = 18;
+    pub const recvmmsg = 19;
+    pub const sendmmsg = 20;
+};
diff --git a/lib/std/os/bits/linux/netlink.zig b/lib/std/os/bits/linux/netlink.zig
deleted file mode 100644
index 9de546fb20..0000000000
--- a/lib/std/os/bits/linux/netlink.zig
+++ /dev/null
@@ -1,498 +0,0 @@
-usingnamespace @import("../linux.zig");
-
-/// Routing/device hook
-pub const NETLINK_ROUTE = 0;
-
-/// Unused number
-pub const NETLINK_UNUSED = 1;
-
-/// Reserved for user mode socket protocols
-pub const NETLINK_USERSOCK = 2;
-
-/// Unused number, formerly ip_queue
-pub const NETLINK_FIREWALL = 3;
-
-/// socket monitoring
-pub const NETLINK_SOCK_DIAG = 4;
-
-/// netfilter/iptables ULOG
-pub const NETLINK_NFLOG = 5;
-
-/// ipsec
-pub const NETLINK_XFRM = 6;
-
-/// SELinux event notifications
-pub const NETLINK_SELINUX = 7;
-
-/// Open-iSCSI
-pub const NETLINK_ISCSI = 8;
-
-/// auditing
-pub const NETLINK_AUDIT = 9;
-
-pub const NETLINK_FIB_LOOKUP = 10;
-
-pub const NETLINK_CONNECTOR = 11;
-
-/// netfilter subsystem
-pub const NETLINK_NETFILTER = 12;
-
-pub const NETLINK_IP6_FW = 13;
-
-/// DECnet routing messages
-pub const NETLINK_DNRTMSG = 14;
-
-/// Kernel messages to userspace
-pub const NETLINK_KOBJECT_UEVENT = 15;
-
-pub const NETLINK_GENERIC = 16;
-
-// leave room for NETLINK_DM (DM Events)
-
-/// SCSI Transports
-pub const NETLINK_SCSITRANSPORT = 18;
-
-pub const NETLINK_ECRYPTFS = 19;
-
-pub const NETLINK_RDMA = 20;
-
-/// Crypto layer
-pub const NETLINK_CRYPTO = 21;
-
-/// SMC monitoring
-pub const NETLINK_SMC = 22;
-
-// Flags values
-
-/// It is request message.
-pub const NLM_F_REQUEST = 0x01;
-
-/// Multipart message, terminated by NLMSG_DONE
-pub const NLM_F_MULTI = 0x02;
-
-/// Reply with ack, with zero or error code
-pub const NLM_F_ACK = 0x04;
-
-/// Echo this request
-pub const NLM_F_ECHO = 0x08;
-
-/// Dump was inconsistent due to sequence change
-pub const NLM_F_DUMP_INTR = 0x10;
-
-/// Dump was filtered as requested
-pub const NLM_F_DUMP_FILTERED = 0x20;
-
-// Modifiers to GET request
-
-/// specify tree root
-pub const NLM_F_ROOT = 0x100;
-
-/// return all matching
-pub const NLM_F_MATCH = 0x200;
-
-/// atomic GET
-pub const NLM_F_ATOMIC = 0x400;
-pub const NLM_F_DUMP = NLM_F_ROOT | NLM_F_MATCH;
-
-// Modifiers to NEW request
-
-/// Override existing
-pub const NLM_F_REPLACE = 0x100;
-
-/// Do not touch, if it exists
-pub const NLM_F_EXCL = 0x200;
-
-/// Create, if it does not exist
-pub const NLM_F_CREATE = 0x400;
-
-/// Add to end of list
-pub const NLM_F_APPEND = 0x800;
-
-// Modifiers to DELETE request
-
-/// Do not delete recursively
-pub const NLM_F_NONREC = 0x100;
-
-// Flags for ACK message
-
-/// request was capped
-pub const NLM_F_CAPPED = 0x100;
-
-/// extended ACK TVLs were included
-pub const NLM_F_ACK_TLVS = 0x200;
-
-pub const NetlinkMessageType = enum(u16) {
-    /// < 0x10: reserved control messages
-    pub const MIN_TYPE = 0x10;
-
-    /// Nothing.
-    NOOP = 0x1,
-
-    /// Error
-    ERROR = 0x2,
-
-    /// End of a dump
-    DONE = 0x3,
-
-    /// Data lost
-    OVERRUN = 0x4,
-
-    // rtlink types
-
-    RTM_NEWLINK = 16,
-    RTM_DELLINK,
-    RTM_GETLINK,
-    RTM_SETLINK,
-
-    RTM_NEWADDR = 20,
-    RTM_DELADDR,
-    RTM_GETADDR,
-
-    RTM_NEWROUTE = 24,
-    RTM_DELROUTE,
-    RTM_GETROUTE,
-
-    RTM_NEWNEIGH = 28,
-    RTM_DELNEIGH,
-    RTM_GETNEIGH,
-
-    RTM_NEWRULE = 32,
-    RTM_DELRULE,
-    RTM_GETRULE,
-
-    RTM_NEWQDISC = 36,
-    RTM_DELQDISC,
-    RTM_GETQDISC,
-
-    RTM_NEWTCLASS = 40,
-    RTM_DELTCLASS,
-    RTM_GETTCLASS,
-
-    RTM_NEWTFILTER = 44,
-    RTM_DELTFILTER,
-    RTM_GETTFILTER,
-
-    RTM_NEWACTION = 48,
-    RTM_DELACTION,
-    RTM_GETACTION,
-
-    RTM_NEWPREFIX = 52,
-
-    RTM_GETMULTICAST = 58,
-
-    RTM_GETANYCAST = 62,
-
-    RTM_NEWNEIGHTBL = 64,
-    RTM_GETNEIGHTBL = 66,
-    RTM_SETNEIGHTBL,
-
-    RTM_NEWNDUSEROPT = 68,
-
-    RTM_NEWADDRLABEL = 72,
-    RTM_DELADDRLABEL,
-    RTM_GETADDRLABEL,
-
-    RTM_GETDCB = 78,
-    RTM_SETDCB,
-
-    RTM_NEWNETCONF = 80,
-    RTM_DELNETCONF,
-    RTM_GETNETCONF = 82,
-
-    RTM_NEWMDB = 84,
-    RTM_DELMDB = 85,
-    RTM_GETMDB = 86,
-
-    RTM_NEWNSID = 88,
-    RTM_DELNSID = 89,
-    RTM_GETNSID = 90,
-
-    RTM_NEWSTATS = 92,
-    RTM_GETSTATS = 94,
-
-    RTM_NEWCACHEREPORT = 96,
-
-    RTM_NEWCHAIN = 100,
-    RTM_DELCHAIN,
-    RTM_GETCHAIN,
-
-    RTM_NEWNEXTHOP = 104,
-    RTM_DELNEXTHOP,
-    RTM_GETNEXTHOP,
-
-    _,
-};
-
-/// Netlink socket address
-pub const sockaddr_nl = extern struct {
-    family: sa_family_t = AF_NETLINK,
-    __pad1: c_ushort = 0,
-
-    /// port ID
-    pid: u32,
-
-    /// multicast groups mask
-    groups: u32,
-};
-
-/// Netlink message header
-/// Specified in RFC 3549 Section 2.3.2
-pub const nlmsghdr = extern struct {
-    /// Length of message including header
-    len: u32,
-
-    /// Message content
-    @"type": NetlinkMessageType,
-
-    /// Additional flags
-    flags: u16,
-
-    /// Sequence number
-    seq: u32,
-
-    /// Sending process port ID
-    pid: u32,
-};
-
-pub const ifinfomsg = extern struct {
-    family: u8,
-    __pad1: u8 = 0,
-
-    /// ARPHRD_*
-    @"type": c_ushort,
-
-    /// Link index
-    index: c_int,
-
-    /// IFF_* flags
-    flags: c_uint,
-
-    /// IFF_* change mask
-    change: c_uint,
-};
-
-pub const rtattr = extern struct {
-    /// Length of option
-    len: c_ushort,
-
-    /// Type of option
-    @"type": IFLA,
-
-    pub const ALIGNTO = 4;
-};
-
-pub const IFLA = enum(c_ushort) {
-    UNSPEC,
-    ADDRESS,
-    BROADCAST,
-    IFNAME,
-    MTU,
-    LINK,
-    QDISC,
-    STATS,
-    COST,
-    PRIORITY,
-    MASTER,
-
-    /// Wireless Extension event
-    WIRELESS,
-
-    /// Protocol specific information for a link
-    PROTINFO,
-
-    TXQLEN,
-    MAP,
-    WEIGHT,
-    OPERSTATE,
-    LINKMODE,
-    LINKINFO,
-    NET_NS_PID,
-    IFALIAS,
-
-    /// Number of VFs if device is SR-IOV PF
-    NUM_VF,
-
-    VFINFO_LIST,
-    STATS64,
-    VF_PORTS,
-    PORT_SELF,
-    AF_SPEC,
-
-    /// Group the device belongs to
-    GROUP,
-
-    NET_NS_FD,
-
-    /// Extended info mask, VFs, etc
-    EXT_MASK,
-
-    /// Promiscuity count: > 0 means acts PROMISC
-    PROMISCUITY,
-
-    NUM_TX_QUEUES,
-    NUM_RX_QUEUES,
-    CARRIER,
-    PHYS_PORT_ID,
-    CARRIER_CHANGES,
-    PHYS_SWITCH_ID,
-    LINK_NETNSID,
-    PHYS_PORT_NAME,
-    PROTO_DOWN,
-    GSO_MAX_SEGS,
-    GSO_MAX_SIZE,
-    PAD,
-    XDP,
-    EVENT,
-
-    NEW_NETNSID,
-    IF_NETNSID,
-
-    CARRIER_UP_COUNT,
-    CARRIER_DOWN_COUNT,
-    NEW_IFINDEX,
-    MIN_MTU,
-    MAX_MTU,
-
-    _,
-
-    pub const TARGET_NETNSID: IFLA = .IF_NETNSID;
-};
-
-pub const rtnl_link_ifmap = extern struct {
-    mem_start: u64,
-    mem_end: u64,
-    base_addr: u64,
-    irq: u16,
-    dma: u8,
-    port: u8,
-};
-
-pub const rtnl_link_stats = extern struct {
-    /// total packets received
-    rx_packets: u32,
-
-    /// total packets transmitted
-    tx_packets: u32,
-
-    /// total bytes received
-    rx_bytes: u32,
-
-    /// total bytes transmitted
-    tx_bytes: u32,
-
-    /// bad packets received
-    rx_errors: u32,
-
-    /// packet transmit problems
-    tx_errors: u32,
-
-    /// no space in linux buffers
-    rx_dropped: u32,
-
-    /// no space available in linux
-    tx_dropped: u32,
-
-    /// multicast packets received
-    multicast: u32,
-
-    collisions: u32,
-
-    // detailed rx_errors
-
-    rx_length_errors: u32,
-
-    /// receiver ring buff overflow
-    rx_over_errors: u32,
-
-    /// recved pkt with crc error
-    rx_crc_errors: u32,
-
-    /// recv'd frame alignment error
-    rx_frame_errors: u32,
-
-    /// recv'r fifo overrun
-    rx_fifo_errors: u32,
-
-    /// receiver missed packet
-    rx_missed_errors: u32,
-
-    // detailed tx_errors
-    tx_aborted_errors: u32,
-    tx_carrier_errors: u32,
-    tx_fifo_errors: u32,
-    tx_heartbeat_errors: u32,
-    tx_window_errors: u32,
-
-    // for cslip etc
-
-    rx_compressed: u32,
-    tx_compressed: u32,
-
-    /// dropped, no handler found
-    rx_nohandler: u32,
-};
-
-pub const rtnl_link_stats64 = extern struct {
-    /// total packets received
-    rx_packets: u64,
-
-    /// total packets transmitted
-    tx_packets: u64,
-
-    /// total bytes received
-    rx_bytes: u64,
-
-    /// total bytes transmitted
-    tx_bytes: u64,
-
-    /// bad packets received
-    rx_errors: u64,
-
-    /// packet transmit problems
-    tx_errors: u64,
-
-    /// no space in linux buffers
-    rx_dropped: u64,
-
-    /// no space available in linux
-    tx_dropped: u64,
-
-    /// multicast packets received
-    multicast: u64,
-
-    collisions: u64,
-
-    // detailed rx_errors
-
-    rx_length_errors: u64,
-
-    /// receiver ring buff overflow
-    rx_over_errors: u64,
-
-    /// recved pkt with crc error
-    rx_crc_errors: u64,
-
-    /// recv'd frame alignment error
-    rx_frame_errors: u64,
-
-    /// recv'r fifo overrun
-    rx_fifo_errors: u64,
-
-    /// receiver missed packet
-    rx_missed_errors: u64,
-
-    // detailed tx_errors
-    tx_aborted_errors: u64,
-    tx_carrier_errors: u64,
-    tx_fifo_errors: u64,
-    tx_heartbeat_errors: u64,
-    tx_window_errors: u64,
-
-    // for cslip etc
-
-    rx_compressed: u64,
-    tx_compressed: u64,
-
-    /// dropped, no handler found
-    rx_nohandler: u64,
-};
diff --git a/lib/std/os/bits/linux/prctl.zig b/lib/std/os/bits/linux/prctl.zig
deleted file mode 100644
index d29b6021b6..0000000000
--- a/lib/std/os/bits/linux/prctl.zig
+++ /dev/null
@@ -1,234 +0,0 @@
-pub const PR = enum(i32) {
-    SET_PDEATHSIG = 1,
-    GET_PDEATHSIG = 2,
-
-    GET_DUMPABLE = 3,
-    SET_DUMPABLE = 4,
-
-    GET_UNALIGN = 5,
-    SET_UNALIGN = 6,
-
-    GET_KEEPCAPS = 7,
-    SET_KEEPCAPS = 8,
-
-    GET_FPEMU = 9,
-    SET_FPEMU = 10,
-
-    GET_FPEXC = 11,
-    SET_FPEXC = 12,
-
-    GET_TIMING = 13,
-    SET_TIMING = 14,
-
-    SET_NAME = 15,
-    GET_NAME = 16,
-
-    GET_ENDIAN = 19,
-    SET_ENDIAN = 20,
-
-    GET_SECCOMP = 21,
-    SET_SECCOMP = 22,
-
-    CAPBSET_READ = 23,
-    CAPBSET_DROP = 24,
-
-    GET_TSC = 25,
-    SET_TSC = 26,
-
-    GET_SECUREBITS = 27,
-    SET_SECUREBITS = 28,
-
-    SET_TIMERSLACK = 29,
-    GET_TIMERSLACK = 30,
-
-    TASK_PERF_EVENTS_DISABLE = 31,
-    TASK_PERF_EVENTS_ENABLE = 32,
-
-    MCE_KILL = 33,
-
-    MCE_KILL_GET = 34,
-
-    SET_MM = 35,
-
-    SET_PTRACER = 0x59616d61,
-
-    SET_CHILD_SUBREAPER = 36,
-    GET_CHILD_SUBREAPER = 37,
-
-    SET_NO_NEW_PRIVS = 38,
-    GET_NO_NEW_PRIVS = 39,
-
-    GET_TID_ADDRESS = 40,
-
-    SET_THP_DISABLE = 41,
-    GET_THP_DISABLE = 42,
-
-    MPX_ENABLE_MANAGEMENT = 43,
-    MPX_DISABLE_MANAGEMENT = 44,
-
-    SET_FP_MODE = 45,
-    GET_FP_MODE = 46,
-
-    CAP_AMBIENT = 47,
-
-    SVE_SET_VL = 50,
-    SVE_GET_VL = 51,
-
-    GET_SPECULATION_CTRL = 52,
-    SET_SPECULATION_CTRL = 53,
-
-    _,
-};
-
-pub const PR_SET_PDEATHSIG = @enumToInt(PR.SET_PDEATHSIG);
-pub const PR_GET_PDEATHSIG = @enumToInt(PR.GET_PDEATHSIG);
-
-pub const PR_GET_DUMPABLE = @enumToInt(PR.GET_DUMPABLE);
-pub const PR_SET_DUMPABLE = @enumToInt(PR.SET_DUMPABLE);
-
-pub const PR_GET_UNALIGN = @enumToInt(PR.GET_UNALIGN);
-pub const PR_SET_UNALIGN = @enumToInt(PR.SET_UNALIGN);
-pub const PR_UNALIGN_NOPRINT = 1;
-pub const PR_UNALIGN_SIGBUS = 2;
-
-pub const PR_GET_KEEPCAPS = @enumToInt(PR.GET_KEEPCAPS);
-pub const PR_SET_KEEPCAPS = @enumToInt(PR.SET_KEEPCAPS);
-
-pub const PR_GET_FPEMU = @enumToInt(PR.GET_FPEMU);
-pub const PR_SET_FPEMU = @enumToInt(PR.SET_FPEMU);
-pub const PR_FPEMU_NOPRINT = 1;
-pub const PR_FPEMU_SIGFPE = 2;
-
-pub const PR_GET_FPEXC = @enumToInt(PR.GET_FPEXC);
-pub const PR_SET_FPEXC = @enumToInt(PR.SET_FPEXC);
-pub const PR_FP_EXC_SW_ENABLE = 0x80;
-pub const PR_FP_EXC_DIV = 0x010000;
-pub const PR_FP_EXC_OVF = 0x020000;
-pub const PR_FP_EXC_UND = 0x040000;
-pub const PR_FP_EXC_RES = 0x080000;
-pub const PR_FP_EXC_INV = 0x100000;
-pub const PR_FP_EXC_DISABLED = 0;
-pub const PR_FP_EXC_NONRECOV = 1;
-pub const PR_FP_EXC_ASYNC = 2;
-pub const PR_FP_EXC_PRECISE = 3;
-
-pub const PR_GET_TIMING = @enumToInt(PR.GET_TIMING);
-pub const PR_SET_TIMING = @enumToInt(PR.SET_TIMING);
-pub const PR_TIMING_STATISTICAL = 0;
-pub const PR_TIMING_TIMESTAMP = 1;
-
-pub const PR_SET_NAME = @enumToInt(PR.SET_NAME);
-pub const PR_GET_NAME = @enumToInt(PR.GET_NAME);
-
-pub const PR_GET_ENDIAN = @enumToInt(PR.GET_ENDIAN);
-pub const PR_SET_ENDIAN = @enumToInt(PR.SET_ENDIAN);
-pub const PR_ENDIAN_BIG = 0;
-pub const PR_ENDIAN_LITTLE = 1;
-pub const PR_ENDIAN_PPC_LITTLE = 2;
-
-pub const PR_GET_SECCOMP = @enumToInt(PR.GET_SECCOMP);
-pub const PR_SET_SECCOMP = @enumToInt(PR.SET_SECCOMP);
-
-pub const PR_CAPBSET_READ = @enumToInt(PR.CAPBSET_READ);
-pub const PR_CAPBSET_DROP = @enumToInt(PR.CAPBSET_DROP);
-
-pub const PR_GET_TSC = @enumToInt(PR.GET_TSC);
-pub const PR_SET_TSC = @enumToInt(PR.SET_TSC);
-pub const PR_TSC_ENABLE = 1;
-pub const PR_TSC_SIGSEGV = 2;
-
-pub const PR_GET_SECUREBITS = @enumToInt(PR.GET_SECUREBITS);
-pub const PR_SET_SECUREBITS = @enumToInt(PR.SET_SECUREBITS);
-
-pub const PR_SET_TIMERSLACK = @enumToInt(PR.SET_TIMERSLACK);
-pub const PR_GET_TIMERSLACK = @enumToInt(PR.GET_TIMERSLACK);
-
-pub const PR_TASK_PERF_EVENTS_DISABLE = @enumToInt(PR.TASK_PERF_EVENTS_DISABLE);
-pub const PR_TASK_PERF_EVENTS_ENABLE = @enumToInt(PR.TASK_PERF_EVENTS_ENABLE);
-
-pub const PR_MCE_KILL = @enumToInt(PR.MCE_KILL);
-pub const PR_MCE_KILL_CLEAR = 0;
-pub const PR_MCE_KILL_SET = 1;
-
-pub const PR_MCE_KILL_LATE = 0;
-pub const PR_MCE_KILL_EARLY = 1;
-pub const PR_MCE_KILL_DEFAULT = 2;
-
-pub const PR_MCE_KILL_GET = @enumToInt(PR.MCE_KILL_GET);
-
-pub const PR_SET_MM = @enumToInt(PR.SET_MM);
-pub const PR_SET_MM_START_CODE = 1;
-pub const PR_SET_MM_END_CODE = 2;
-pub const PR_SET_MM_START_DATA = 3;
-pub const PR_SET_MM_END_DATA = 4;
-pub const PR_SET_MM_START_STACK = 5;
-pub const PR_SET_MM_START_BRK = 6;
-pub const PR_SET_MM_BRK = 7;
-pub const PR_SET_MM_ARG_START = 8;
-pub const PR_SET_MM_ARG_END = 9;
-pub const PR_SET_MM_ENV_START = 10;
-pub const PR_SET_MM_ENV_END = 11;
-pub const PR_SET_MM_AUXV = 12;
-pub const PR_SET_MM_EXE_FILE = 13;
-pub const PR_SET_MM_MAP = 14;
-pub const PR_SET_MM_MAP_SIZE = 15;
-
-pub const prctl_mm_map = extern struct {
-    start_code: u64,
-    end_code: u64,
-    start_data: u64,
-    end_data: u64,
-    start_brk: u64,
-    brk: u64,
-    start_stack: u64,
-    arg_start: u64,
-    arg_end: u64,
-    env_start: u64,
-    env_end: u64,
-    auxv: *u64,
-    auxv_size: u32,
-    exe_fd: u32,
-};
-
-pub const PR_SET_PTRACER = @enumToInt(PR.SET_PTRACER);
-pub const PR_SET_PTRACER_ANY = std.math.maxInt(c_ulong);
-
-pub const PR_SET_CHILD_SUBREAPER = @enumToInt(PR.SET_CHILD_SUBREAPER);
-pub const PR_GET_CHILD_SUBREAPER = @enumToInt(PR.GET_CHILD_SUBREAPER);
-
-pub const PR_SET_NO_NEW_PRIVS = @enumToInt(PR.SET_NO_NEW_PRIVS);
-pub const PR_GET_NO_NEW_PRIVS = @enumToInt(PR.GET_NO_NEW_PRIVS);
-
-pub const PR_GET_TID_ADDRESS = @enumToInt(PR.GET_TID_ADDRESS);
-
-pub const PR_SET_THP_DISABLE = @enumToInt(PR.SET_THP_DISABLE);
-pub const PR_GET_THP_DISABLE = @enumToInt(PR.GET_THP_DISABLE);
-
-pub const PR_MPX_ENABLE_MANAGEMENT = @enumToInt(PR.MPX_ENABLE_MANAGEMENT);
-pub const PR_MPX_DISABLE_MANAGEMENT = @enumToInt(PR.MPX_DISABLE_MANAGEMENT);
-
-pub const PR_SET_FP_MODE = @enumToInt(PR.SET_FP_MODE);
-pub const PR_GET_FP_MODE = @enumToInt(PR.GET_FP_MODE);
-pub const PR_FP_MODE_FR = 1 << 0;
-pub const PR_FP_MODE_FRE = 1 << 1;
-
-pub const PR_CAP_AMBIENT = @enumToInt(PR.CAP_AMBIENT);
-pub const PR_CAP_AMBIENT_IS_SET = 1;
-pub const PR_CAP_AMBIENT_RAISE = 2;
-pub const PR_CAP_AMBIENT_LOWER = 3;
-pub const PR_CAP_AMBIENT_CLEAR_ALL = 4;
-
-pub const PR_SVE_SET_VL = @enumToInt(PR.SVE_SET_VL);
-pub const PR_SVE_SET_VL_ONEXEC = 1 << 18;
-pub const PR_SVE_GET_VL = @enumToInt(PR.SVE_GET_VL);
-pub const PR_SVE_VL_LEN_MASK = 0xffff;
-pub const PR_SVE_VL_INHERIT = 1 << 17;
-
-pub const PR_GET_SPECULATION_CTRL = @enumToInt(PR.GET_SPECULATION_CTRL);
-pub const PR_SET_SPECULATION_CTRL = @enumToInt(PR.SET_SPECULATION_CTRL);
-pub const PR_SPEC_STORE_BYPASS = 0;
-pub const PR_SPEC_NOT_AFFECTED = 0;
-pub const PR_SPEC_PRCTL = 1 << 0;
-pub const PR_SPEC_ENABLE = 1 << 1;
-pub const PR_SPEC_DISABLE = 1 << 2;
-pub const PR_SPEC_FORCE_DISABLE = 1 << 3;
diff --git a/lib/std/os/bits/linux/securebits.zig b/lib/std/os/bits/linux/securebits.zig
deleted file mode 100644
index a23ced3cf2..0000000000
--- a/lib/std/os/bits/linux/securebits.zig
+++ /dev/null
@@ -1,35 +0,0 @@
-fn issecure_mask(comptime x: comptime_int) comptime_int {
-    return 1 << x;
-}
-
-pub const SECUREBITS_DEFAULT = 0x00000000;
-
-pub const SECURE_NOROOT = 0;
-pub const SECURE_NOROOT_LOCKED = 1;
-
-pub const SECBIT_NOROOT = issecure_mask(SECURE_NOROOT);
-pub const SECBIT_NOROOT_LOCKED = issecure_mask(SECURE_NOROOT_LOCKED);
-
-pub const SECURE_NO_SETUID_FIXUP = 2;
-pub const SECURE_NO_SETUID_FIXUP_LOCKED = 3;
-
-pub const SECBIT_NO_SETUID_FIXUP = issecure_mask(SECURE_NO_SETUID_FIXUP);
-pub const SECBIT_NO_SETUID_FIXUP_LOCKED = issecure_mask(SECURE_NO_SETUID_FIXUP_LOCKED);
-
-pub const SECURE_KEEP_CAPS = 4;
-pub const SECURE_KEEP_CAPS_LOCKED = 5;
-
-pub const SECBIT_KEEP_CAPS = issecure_mask(SECURE_KEEP_CAPS);
-pub const SECBIT_KEEP_CAPS_LOCKED = issecure_mask(SECURE_KEEP_CAPS_LOCKED);
-
-pub const SECURE_NO_CAP_AMBIENT_RAISE = 6;
-pub const SECURE_NO_CAP_AMBIENT_RAISE_LOCKED = 7;
-
-pub const SECBIT_NO_CAP_AMBIENT_RAISE = issecure_mask(SECURE_NO_CAP_AMBIENT_RAISE);
-pub const SECBIT_NO_CAP_AMBIENT_RAISE_LOCKED = issecure_mask(SECURE_NO_CAP_AMBIENT_RAISE_LOCKED);
-
-pub const SECURE_ALL_BITS = issecure_mask(SECURE_NOROOT) |
-    issecure_mask(SECURE_NO_SETUID_FIXUP) |
-    issecure_mask(SECURE_KEEP_CAPS) |
-    issecure_mask(SECURE_NO_CAP_AMBIENT_RAISE);
-pub const SECURE_ALL_LOCKS = SECURE_ALL_BITS << 1;
diff --git a/lib/std/os/bits/linux/x86_64.zig b/lib/std/os/bits/linux/x86_64.zig
deleted file mode 100644
index 69beac9d87..0000000000
--- a/lib/std/os/bits/linux/x86_64.zig
+++ /dev/null
@@ -1,638 +0,0 @@
-// x86-64-specific declarations that are intended to be imported into the POSIX namespace.
-const std = @import("../../../std.zig");
-const pid_t = linux.pid_t;
-const uid_t = linux.uid_t;
-const gid_t = linux.gid_t;
-const clock_t = linux.clock_t;
-const stack_t = linux.stack_t;
-const sigset_t = linux.sigset_t;
-
-const linux = std.os.linux;
-const sockaddr = linux.sockaddr;
-const socklen_t = linux.socklen_t;
-const iovec = linux.iovec;
-const iovec_const = linux.iovec_const;
-
-pub const mode_t = usize;
-pub const time_t = isize;
-
-pub const SYS = enum(usize) {
-    read = 0,
-    write = 1,
-    open = 2,
-    close = 3,
-    stat = 4,
-    fstat = 5,
-    lstat = 6,
-    poll = 7,
-    lseek = 8,
-    mmap = 9,
-    mprotect = 10,
-    munmap = 11,
-    brk = 12,
-    rt_sigaction = 13,
-    rt_sigprocmask = 14,
-    rt_sigreturn = 15,
-    ioctl = 16,
-    pread = 17,
-    pwrite = 18,
-    readv = 19,
-    writev = 20,
-    access = 21,
-    pipe = 22,
-    select = 23,
-    sched_yield = 24,
-    mremap = 25,
-    msync = 26,
-    mincore = 27,
-    madvise = 28,
-    shmget = 29,
-    shmat = 30,
-    shmctl = 31,
-    dup = 32,
-    dup2 = 33,
-    pause = 34,
-    nanosleep = 35,
-    getitimer = 36,
-    alarm = 37,
-    setitimer = 38,
-    getpid = 39,
-    sendfile = 40,
-    socket = 41,
-    connect = 42,
-    accept = 43,
-    sendto = 44,
-    recvfrom = 45,
-    sendmsg = 46,
-    recvmsg = 47,
-    shutdown = 48,
-    bind = 49,
-    listen = 50,
-    getsockname = 51,
-    getpeername = 52,
-    socketpair = 53,
-    setsockopt = 54,
-    getsockopt = 55,
-    clone = 56,
-    fork = 57,
-    vfork = 58,
-    execve = 59,
-    exit = 60,
-    wait4 = 61,
-    kill = 62,
-    uname = 63,
-    semget = 64,
-    semop = 65,
-    semctl = 66,
-    shmdt = 67,
-    msgget = 68,
-    msgsnd = 69,
-    msgrcv = 70,
-    msgctl = 71,
-    fcntl = 72,
-    flock = 73,
-    fsync = 74,
-    fdatasync = 75,
-    truncate = 76,
-    ftruncate = 77,
-    getdents = 78,
-    getcwd = 79,
-    chdir = 80,
-    fchdir = 81,
-    rename = 82,
-    mkdir = 83,
-    rmdir = 84,
-    creat = 85,
-    link = 86,
-    unlink = 87,
-    symlink = 88,
-    readlink = 89,
-    chmod = 90,
-    fchmod = 91,
-    chown = 92,
-    fchown = 93,
-    lchown = 94,
-    umask = 95,
-    gettimeofday = 96,
-    getrlimit = 97,
-    getrusage = 98,
-    sysinfo = 99,
-    times = 100,
-    ptrace = 101,
-    getuid = 102,
-    syslog = 103,
-    getgid = 104,
-    setuid = 105,
-    setgid = 106,
-    geteuid = 107,
-    getegid = 108,
-    setpgid = 109,
-    getppid = 110,
-    getpgrp = 111,
-    setsid = 112,
-    setreuid = 113,
-    setregid = 114,
-    getgroups = 115,
-    setgroups = 116,
-    setresuid = 117,
-    getresuid = 118,
-    setresgid = 119,
-    getresgid = 120,
-    getpgid = 121,
-    setfsuid = 122,
-    setfsgid = 123,
-    getsid = 124,
-    capget = 125,
-    capset = 126,
-    rt_sigpending = 127,
-    rt_sigtimedwait = 128,
-    rt_sigqueueinfo = 129,
-    rt_sigsuspend = 130,
-    sigaltstack = 131,
-    utime = 132,
-    mknod = 133,
-    uselib = 134,
-    personality = 135,
-    ustat = 136,
-    statfs = 137,
-    fstatfs = 138,
-    sysfs = 139,
-    getpriority = 140,
-    setpriority = 141,
-    sched_setparam = 142,
-    sched_getparam = 143,
-    sched_setscheduler = 144,
-    sched_getscheduler = 145,
-    sched_get_priority_max = 146,
-    sched_get_priority_min = 147,
-    sched_rr_get_interval = 148,
-    mlock = 149,
-    munlock = 150,
-    mlockall = 151,
-    munlockall = 152,
-    vhangup = 153,
-    modify_ldt = 154,
-    pivot_root = 155,
-    _sysctl = 156,
-    prctl = 157,
-    arch_prctl = 158,
-    adjtimex = 159,
-    setrlimit = 160,
-    chroot = 161,
-    sync = 162,
-    acct = 163,
-    settimeofday = 164,
-    mount = 165,
-    umount2 = 166,
-    swapon = 167,
-    swapoff = 168,
-    reboot = 169,
-    sethostname = 170,
-    setdomainname = 171,
-    iopl = 172,
-    ioperm = 173,
-    create_module = 174,
-    init_module = 175,
-    delete_module = 176,
-    get_kernel_syms = 177,
-    query_module = 178,
-    quotactl = 179,
-    nfsservctl = 180,
-    getpmsg = 181,
-    putpmsg = 182,
-    afs_syscall = 183,
-    tuxcall = 184,
-    security = 185,
-    gettid = 186,
-    readahead = 187,
-    setxattr = 188,
-    lsetxattr = 189,
-    fsetxattr = 190,
-    getxattr = 191,
-    lgetxattr = 192,
-    fgetxattr = 193,
-    listxattr = 194,
-    llistxattr = 195,
-    flistxattr = 196,
-    removexattr = 197,
-    lremovexattr = 198,
-    fremovexattr = 199,
-    tkill = 200,
-    time = 201,
-    futex = 202,
-    sched_setaffinity = 203,
-    sched_getaffinity = 204,
-    set_thread_area = 205,
-    io_setup = 206,
-    io_destroy = 207,
-    io_getevents = 208,
-    io_submit = 209,
-    io_cancel = 210,
-    get_thread_area = 211,
-    lookup_dcookie = 212,
-    epoll_create = 213,
-    epoll_ctl_old = 214,
-    epoll_wait_old = 215,
-    remap_file_pages = 216,
-    getdents64 = 217,
-    set_tid_address = 218,
-    restart_syscall = 219,
-    semtimedop = 220,
-    fadvise64 = 221,
-    timer_create = 222,
-    timer_settime = 223,
-    timer_gettime = 224,
-    timer_getoverrun = 225,
-    timer_delete = 226,
-    clock_settime = 227,
-    clock_gettime = 228,
-    clock_getres = 229,
-    clock_nanosleep = 230,
-    exit_group = 231,
-    epoll_wait = 232,
-    epoll_ctl = 233,
-    tgkill = 234,
-    utimes = 235,
-    vserver = 236,
-    mbind = 237,
-    set_mempolicy = 238,
-    get_mempolicy = 239,
-    mq_open = 240,
-    mq_unlink = 241,
-    mq_timedsend = 242,
-    mq_timedreceive = 243,
-    mq_notify = 244,
-    mq_getsetattr = 245,
-    kexec_load = 246,
-    waitid = 247,
-    add_key = 248,
-    request_key = 249,
-    keyctl = 250,
-    ioprio_set = 251,
-    ioprio_get = 252,
-    inotify_init = 253,
-    inotify_add_watch = 254,
-    inotify_rm_watch = 255,
-    migrate_pages = 256,
-    openat = 257,
-    mkdirat = 258,
-    mknodat = 259,
-    fchownat = 260,
-    futimesat = 261,
-    fstatat = 262,
-    unlinkat = 263,
-    renameat = 264,
-    linkat = 265,
-    symlinkat = 266,
-    readlinkat = 267,
-    fchmodat = 268,
-    faccessat = 269,
-    pselect6 = 270,
-    ppoll = 271,
-    unshare = 272,
-    set_robust_list = 273,
-    get_robust_list = 274,
-    splice = 275,
-    tee = 276,
-    sync_file_range = 277,
-    vmsplice = 278,
-    move_pages = 279,
-    utimensat = 280,
-    epoll_pwait = 281,
-    signalfd = 282,
-    timerfd_create = 283,
-    eventfd = 284,
-    fallocate = 285,
-    timerfd_settime = 286,
-    timerfd_gettime = 287,
-    accept4 = 288,
-    signalfd4 = 289,
-    eventfd2 = 290,
-    epoll_create1 = 291,
-    dup3 = 292,
-    pipe2 = 293,
-    inotify_init1 = 294,
-    preadv = 295,
-    pwritev = 296,
-    rt_tgsigqueueinfo = 297,
-    perf_event_open = 298,
-    recvmmsg = 299,
-    fanotify_init = 300,
-    fanotify_mark = 301,
-    prlimit64 = 302,
-    name_to_handle_at = 303,
-    open_by_handle_at = 304,
-    clock_adjtime = 305,
-    syncfs = 306,
-    sendmmsg = 307,
-    setns = 308,
-    getcpu = 309,
-    process_vm_readv = 310,
-    process_vm_writev = 311,
-    kcmp = 312,
-    finit_module = 313,
-    sched_setattr = 314,
-    sched_getattr = 315,
-    renameat2 = 316,
-    seccomp = 317,
-    getrandom = 318,
-    memfd_create = 319,
-    kexec_file_load = 320,
-    bpf = 321,
-    execveat = 322,
-    userfaultfd = 323,
-    membarrier = 324,
-    mlock2 = 325,
-    copy_file_range = 326,
-    preadv2 = 327,
-    pwritev2 = 328,
-    pkey_mprotect = 329,
-    pkey_alloc = 330,
-    pkey_free = 331,
-    statx = 332,
-    io_pgetevents = 333,
-    rseq = 334,
-    pidfd_send_signal = 424,
-    io_uring_setup = 425,
-    io_uring_enter = 426,
-    io_uring_register = 427,
-    open_tree = 428,
-    move_mount = 429,
-    fsopen = 430,
-    fsconfig = 431,
-    fsmount = 432,
-    fspick = 433,
-    pidfd_open = 434,
-    clone3 = 435,
-    close_range = 436,
-    openat2 = 437,
-    pidfd_getfd = 438,
-    faccessat2 = 439,
-    process_madvise = 440,
-    epoll_pwait2 = 441,
-
-    _,
-};
-
-pub const O_CREAT = 0o100;
-pub const O_EXCL = 0o200;
-pub const O_NOCTTY = 0o400;
-pub const O_TRUNC = 0o1000;
-pub const O_APPEND = 0o2000;
-pub const O_NONBLOCK = 0o4000;
-pub const O_DSYNC = 0o10000;
-pub const O_SYNC = 0o4010000;
-pub const O_RSYNC = 0o4010000;
-pub const O_DIRECTORY = 0o200000;
-pub const O_NOFOLLOW = 0o400000;
-pub const O_CLOEXEC = 0o2000000;
-
-pub const O_ASYNC = 0o20000;
-pub const O_DIRECT = 0o40000;
-pub const O_LARGEFILE = 0;
-pub const O_NOATIME = 0o1000000;
-pub const O_PATH = 0o10000000;
-pub const O_TMPFILE = 0o20200000;
-pub const O_NDELAY = O_NONBLOCK;
-
-pub const F_DUPFD = 0;
-pub const F_GETFD = 1;
-pub const F_SETFD = 2;
-pub const F_GETFL = 3;
-pub const F_SETFL = 4;
-
-pub const F_SETOWN = 8;
-pub const F_GETOWN = 9;
-pub const F_SETSIG = 10;
-pub const F_GETSIG = 11;
-
-pub const F_GETLK = 5;
-pub const F_SETLK = 6;
-pub const F_SETLKW = 7;
-
-pub const F_SETOWN_EX = 15;
-pub const F_GETOWN_EX = 16;
-
-pub const F_GETOWNER_UIDS = 17;
-
-/// only give out 32bit addresses
-pub const MAP_32BIT = 0x40;
-
-/// stack-like segment
-pub const MAP_GROWSDOWN = 0x0100;
-
-/// ETXTBSY
-pub const MAP_DENYWRITE = 0x0800;
-
-/// mark it as an executable
-pub const MAP_EXECUTABLE = 0x1000;
-
-/// pages are locked
-pub const MAP_LOCKED = 0x2000;
-
-/// don't check for reservations
-pub const MAP_NORESERVE = 0x4000;
-
-pub const VDSO_CGT_SYM = "__vdso_clock_gettime";
-pub const VDSO_CGT_VER = "LINUX_2.6";
-pub const VDSO_GETCPU_SYM = "__vdso_getcpu";
-pub const VDSO_GETCPU_VER = "LINUX_2.6";
-
-pub const ARCH_SET_GS = 0x1001;
-pub const ARCH_SET_FS = 0x1002;
-pub const ARCH_GET_FS = 0x1003;
-pub const ARCH_GET_GS = 0x1004;
-
-pub const REG_R8 = 0;
-pub const REG_R9 = 1;
-pub const REG_R10 = 2;
-pub const REG_R11 = 3;
-pub const REG_R12 = 4;
-pub const REG_R13 = 5;
-pub const REG_R14 = 6;
-pub const REG_R15 = 7;
-pub const REG_RDI = 8;
-pub const REG_RSI = 9;
-pub const REG_RBP = 10;
-pub const REG_RBX = 11;
-pub const REG_RDX = 12;
-pub const REG_RAX = 13;
-pub const REG_RCX = 14;
-pub const REG_RSP = 15;
-pub const REG_RIP = 16;
-pub const REG_EFL = 17;
-pub const REG_CSGSFS = 18;
-pub const REG_ERR = 19;
-pub const REG_TRAPNO = 20;
-pub const REG_OLDMASK = 21;
-pub const REG_CR2 = 22;
-
-pub const LOCK_SH = 1;
-pub const LOCK_EX = 2;
-pub const LOCK_UN = 8;
-pub const LOCK_NB = 4;
-
-pub const F_RDLCK = 0;
-pub const F_WRLCK = 1;
-pub const F_UNLCK = 2;
-
-pub const Flock = extern struct {
-    l_type: i16,
-    l_whence: i16,
-    l_start: off_t,
-    l_len: off_t,
-    l_pid: pid_t,
-};
-
-pub const msghdr = extern struct {
-    msg_name: ?*sockaddr,
-    msg_namelen: socklen_t,
-    msg_iov: [*]iovec,
-    msg_iovlen: i32,
-    __pad1: i32 = 0,
-    msg_control: ?*c_void,
-    msg_controllen: socklen_t,
-    __pad2: socklen_t = 0,
-    msg_flags: i32,
-};
-
-pub const msghdr_const = extern struct {
-    msg_name: ?*const sockaddr,
-    msg_namelen: socklen_t,
-    msg_iov: [*]iovec_const,
-    msg_iovlen: i32,
-    __pad1: i32 = 0,
-    msg_control: ?*c_void,
-    msg_controllen: socklen_t,
-    __pad2: socklen_t = 0,
-    msg_flags: i32,
-};
-
-pub const off_t = i64;
-pub const ino_t = u64;
-pub const dev_t = u64;
-
-// The `stat` definition used by the Linux kernel.
-pub const kernel_stat = extern struct {
-    dev: dev_t,
-    ino: ino_t,
-    nlink: usize,
-
-    mode: u32,
-    uid: uid_t,
-    gid: gid_t,
-    __pad0: u32,
-    rdev: dev_t,
-    size: off_t,
-    blksize: isize,
-    blocks: i64,
-
-    atim: timespec,
-    mtim: timespec,
-    ctim: timespec,
-    __unused: [3]isize,
-
-    pub fn atime(self: @This()) timespec {
-        return self.atim;
-    }
-
-    pub fn mtime(self: @This()) timespec {
-        return self.mtim;
-    }
-
-    pub fn ctime(self: @This()) timespec {
-        return self.ctim;
-    }
-};
-
-// The `stat64` definition used by the libc.
-pub const libc_stat = kernel_stat;
-
-pub const timespec = extern struct {
-    tv_sec: isize,
-    tv_nsec: isize,
-};
-
-pub const timeval = extern struct {
-    tv_sec: isize,
-    tv_usec: isize,
-};
-
-pub const timezone = extern struct {
-    tz_minuteswest: i32,
-    tz_dsttime: i32,
-};
-
-pub const Elf_Symndx = u32;
-
-pub const greg_t = usize;
-pub const gregset_t = [23]greg_t;
-pub const fpstate = extern struct {
-    cwd: u16,
-    swd: u16,
-    ftw: u16,
-    fop: u16,
-    rip: usize,
-    rdp: usize,
-    mxcsr: u32,
-    mxcr_mask: u32,
-    st: [8]extern struct {
-        significand: [4]u16,
-        exponent: u16,
-        padding: [3]u16 = undefined,
-    },
-    xmm: [16]extern struct {
-        element: [4]u32,
-    },
-    padding: [24]u32 = undefined,
-};
-pub const fpregset_t = *fpstate;
-pub const sigcontext = extern struct {
-    r8: usize,
-    r9: usize,
-    r10: usize,
-    r11: usize,
-    r12: usize,
-    r13: usize,
-    r14: usize,
-    r15: usize,
-
-    rdi: usize,
-    rsi: usize,
-    rbp: usize,
-    rbx: usize,
-    rdx: usize,
-    rax: usize,
-    rcx: usize,
-    rsp: usize,
-    rip: usize,
-    eflags: usize,
-
-    cs: u16,
-    gs: u16,
-    fs: u16,
-    pad0: u16 = undefined,
-
-    err: usize,
-    trapno: usize,
-    oldmask: usize,
-    cr2: usize,
-
-    fpstate: *fpstate,
-    reserved1: [8]usize = undefined,
-};
-
-pub const mcontext_t = extern struct {
-    gregs: gregset_t,
-    fpregs: fpregset_t,
-    reserved1: [8]usize = undefined,
-};
-
-pub const ucontext_t = extern struct {
-    flags: usize,
-    link: *ucontext_t,
-    stack: stack_t,
-    mcontext: mcontext_t,
-    sigmask: sigset_t,
-    fpregs_mem: [64]usize,
-};
diff --git a/lib/std/os/bits/linux/xdp.zig b/lib/std/os/bits/linux/xdp.zig
deleted file mode 100644
index 88fa9918a3..0000000000
--- a/lib/std/os/bits/linux/xdp.zig
+++ /dev/null
@@ -1,77 +0,0 @@
-usingnamespace @import("../linux.zig");
-
-pub const XDP_SHARED_UMEM = (1 << 0);
-pub const XDP_COPY = (1 << 1);
-pub const XDP_ZEROCOPY = (1 << 2);
-
-pub const XDP_UMEM_UNALIGNED_CHUNK_FLAG = (1 << 0);
-
-pub const sockaddr_xdp = extern struct {
-    family: u16 = AF_XDP,
-    flags: u16,
-    ifindex: u32,
-    queue_id: u32,
-    shared_umem_fd: u32,
-};
-
-pub const XDP_USE_NEED_WAKEUP = (1 << 3);
-
-pub const xdp_ring_offset = extern struct {
-    producer: u64,
-    consumer: u64,
-    desc: u64,
-    flags: u64,
-};
-
-pub const xdp_mmap_offsets = extern struct {
-    rx: xdp_ring_offset,
-    tx: xdp_ring_offset,
-    fr: xdp_ring_offset,
-    cr: xdp_ring_offset,
-};
-
-pub const XDP_MMAP_OFFSETS = 1;
-pub const XDP_RX_RING = 2;
-pub const XDP_TX_RING = 3;
-pub const XDP_UMEM_REG = 4;
-pub const XDP_UMEM_FILL_RING = 5;
-pub const XDP_UMEM_COMPLETION_RING = 6;
-pub const XDP_STATISTICS = 7;
-pub const XDP_OPTIONS = 8;
-
-pub const xdp_umem_reg = extern struct {
-    addr: u64,
-    len: u64,
-    chunk_size: u32,
-    headroom: u32,
-    flags: u32,
-};
-
-pub const xdp_statistics = extern struct {
-    rx_dropped: u64,
-    rx_invalid_descs: u64,
-    tx_invalid_descs: u64,
-    rx_ring_full: u64,
-    rx_fill_ring_empty_descs: u64,
-    tx_ring_empty_descs: u64,
-};
-
-pub const xdp_options = extern struct {
-    flags: u32,
-};
-
-pub const XDP_OPTIONS_ZEROCOPY = (1 << 0);
-
-pub const XDP_PGOFF_RX_RING = 0;
-pub const XDP_PGOFF_TX_RING = 0x80000000;
-pub const XDP_UMEM_PGOFF_FILL_RING = 0x100000000;
-pub const XDP_UMEM_PGOFF_COMPLETION_RING = 0x180000000;
-
-pub const XSK_UNALIGNED_BUF_OFFSET_SHIFT = 48;
-pub const XSK_UNALIGNED_BUF_ADDR_MASK = (1 << XSK_UNALIGNED_BUF_OFFSET_SHIFT) - 1;
-
-pub const xdp_desc = extern struct {
-    addr: u64,
-    len: u32,
-    options: u32,
-};
diff --git a/lib/std/os/bits/netbsd.zig b/lib/std/os/bits/netbsd.zig
index be35889042..2ed4d89aa4 100644
--- a/lib/std/os/bits/netbsd.zig
+++ b/lib/std/os/bits/netbsd.zig
@@ -2,8 +2,6 @@ const std = @import("../../std.zig");
 const builtin = std.builtin;
 const maxInt = std.math.maxInt;
 
-pub usingnamespace @import("posix.zig");
-
 pub const blkcnt_t = i64;
 pub const blksize_t = i32;
 pub const clock_t = u32;
diff --git a/lib/std/os/bits/openbsd.zig b/lib/std/os/bits/openbsd.zig
index c7d1c0583b..d984c9063e 100644
--- a/lib/std/os/bits/openbsd.zig
+++ b/lib/std/os/bits/openbsd.zig
@@ -2,8 +2,6 @@ const std = @import("../../std.zig");
 const builtin = std.builtin;
 const maxInt = std.math.maxInt;
 
-pub usingnamespace @import("posix.zig");
-
 pub const blkcnt_t = i64;
 pub const blksize_t = i32;
 pub const clock_t = i64;
diff --git a/lib/std/os/bits/posix.zig b/lib/std/os/bits/posix.zig
deleted file mode 100644
index 6ffd2dcf6a..0000000000
--- a/lib/std/os/bits/posix.zig
+++ /dev/null
@@ -1,28 +0,0 @@
-pub const iovec = extern struct {
-    iov_base: [*]u8,
-    iov_len: usize,
-};
-
-pub const iovec_const = extern struct {
-    iov_base: [*]const u8,
-    iov_len: usize,
-};
-
-// syslog
-
-/// system is unusable
-pub const LOG_EMERG = 0;
-/// action must be taken immediately
-pub const LOG_ALERT = 1;
-/// critical conditions
-pub const LOG_CRIT = 2;
-/// error conditions
-pub const LOG_ERR = 3;
-/// warning conditions
-pub const LOG_WARNING = 4;
-/// normal but significant condition
-pub const LOG_NOTICE = 5;
-/// informational
-pub const LOG_INFO = 6;
-/// debug-level messages
-pub const LOG_DEBUG = 7;
diff --git a/lib/std/os/bits/wasi.zig b/lib/std/os/bits/wasi.zig
index 567d74961e..91cf0653af 100644
--- a/lib/std/os/bits/wasi.zig
+++ b/lib/std/os/bits/wasi.zig
@@ -1,6 +1,5 @@
 // Convenience types and consts used by std.os module
 const builtin = @import("builtin");
-const posix = @import("posix.zig");
 pub const iovec = posix.iovec;
 pub const iovec_const = posix.iovec_const;
 
@@ -87,10 +86,12 @@ pub const ADVICE_DONTNEED: advice_t = 4;
 pub const ADVICE_NOREUSE: advice_t = 5;
 
 pub const clockid_t = u32;
-pub const CLOCK_REALTIME: clockid_t = 0;
-pub const CLOCK_MONOTONIC: clockid_t = 1;
-pub const CLOCK_PROCESS_CPUTIME_ID: clockid_t = 2;
-pub const CLOCK_THREAD_CPUTIME_ID: clockid_t = 3;
+pub const CLOCK = struct {
+    pub const REALTIME: clockid_t = 0;
+    pub const MONOTONIC: clockid_t = 1;
+    pub const PROCESS_CPUTIME_ID: clockid_t = 2;
+    pub const THREAD_CPUTIME_ID: clockid_t = 3;
+};
 
 pub const device_t = u64;
 
diff --git a/lib/std/os/bits/windows.zig b/lib/std/os/bits/windows.zig
index bb57a13ffe..e38407579a 100644
--- a/lib/std/os/bits/windows.zig
+++ b/lib/std/os/bits/windows.zig
@@ -3,11 +3,6 @@
 usingnamespace @import("../windows/bits.zig");
 const ws2_32 = @import("../windows/ws2_32.zig");
 
-// TODO: Stop using os.iovec in std.fs et al on Windows in the future
-const posix = @import("posix.zig");
-pub const iovec = posix.iovec;
-pub const iovec_const = posix.iovec_const;
-
 pub const fd_t = HANDLE;
 pub const ino_t = LARGE_INTEGER;
 pub const pid_t = HANDLE;
diff --git a/lib/std/os/darwin.zig b/lib/std/os/darwin.zig
deleted file mode 100644
index 5f9684b96d..0000000000
--- a/lib/std/os/darwin.zig
+++ /dev/null
@@ -1,3 +0,0 @@
-const std = @import("../std.zig");
-pub usingnamespace std.c;
-pub usingnamespace @import("bits.zig");
diff --git a/lib/std/os/dragonfly.zig b/lib/std/os/dragonfly.zig
deleted file mode 100644
index 5f9684b96d..0000000000
--- a/lib/std/os/dragonfly.zig
+++ /dev/null
@@ -1,3 +0,0 @@
-const std = @import("../std.zig");
-pub usingnamespace std.c;
-pub usingnamespace @import("bits.zig");
diff --git a/lib/std/os/freebsd.zig b/lib/std/os/freebsd.zig
deleted file mode 100644
index 5f9684b96d..0000000000
--- a/lib/std/os/freebsd.zig
+++ /dev/null
@@ -1,3 +0,0 @@
-const std = @import("../std.zig");
-pub usingnamespace std.c;
-pub usingnamespace @import("bits.zig");
diff --git a/lib/std/os/haiku.zig b/lib/std/os/haiku.zig
deleted file mode 100644
index 5f9684b96d..0000000000
--- a/lib/std/os/haiku.zig
+++ /dev/null
@@ -1,3 +0,0 @@
-const std = @import("../std.zig");
-pub usingnamespace std.c;
-pub usingnamespace @import("bits.zig");
diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index 369fae8f53..9aa18f786c 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -13,13 +13,22 @@ const vdso = @import("linux/vdso.zig");
 const dl = @import("../dynamic_library.zig");
 const native_arch = std.Target.current.cpu.arch;
 const native_endian = native_arch.endian();
+const is_mips = native_arch.isMIPS();
+const is_ppc = native_arch.isPPC();
+const is_ppc64 = native_arch.isPPC64();
+const is_sparc = native_arch.isSPARC();
 
-pub usingnamespace switch (native_arch) {
+test {
+    if (std.Target.current.os.tag == .linux) {
+        _ = @import("linux/test.zig");
+    }
+}
+
+const arch_bits = switch (native_arch) {
     .i386 => @import("linux/i386.zig"),
     .x86_64 => @import("linux/x86_64.zig"),
     .aarch64 => @import("linux/arm64.zig"),
-    .arm => @import("linux/arm-eabi.zig"),
-    .thumb => @import("linux/thumb.zig"),
+    .arm, .thumb => @import("linux/arm-eabi.zig"),
     .riscv64 => @import("linux/riscv64.zig"),
     .sparcv9 => @import("linux/sparc64.zig"),
     .mips, .mipsel => @import("linux/mips.zig"),
@@ -27,7 +36,48 @@ pub usingnamespace switch (native_arch) {
     .powerpc64, .powerpc64le => @import("linux/powerpc64.zig"),
     else => struct {},
 };
-pub usingnamespace @import("bits.zig");
+pub const syscall0 = arch_bits.syscall0;
+pub const syscall1 = arch_bits.syscall1;
+pub const syscall2 = arch_bits.syscall2;
+pub const syscall3 = arch_bits.syscall3;
+pub const syscall4 = arch_bits.syscall4;
+pub const syscall5 = arch_bits.syscall5;
+pub const syscall6 = arch_bits.syscall6;
+pub const clone = arch_bits.clone;
+pub const restore = arch_bits.restore;
+pub const restore_rt = arch_bits.restore_rt;
+
+pub const ARCH = arch_bits.ARCH;
+pub const Elf_Symndx = arch_bits.Elf_Symndx;
+pub const F = arch_bits.F;
+pub const Flock = arch_bits.Flock;
+pub const LOCK = arch_bits.LOCK;
+pub const MAP = arch_bits.MAP;
+pub const MMAP2_UNIT = arch_bits.MMAP2_UNIT;
+pub const O = arch_bits.O;
+pub const REG = arch_bits.REG;
+pub const SC = arch_bits.SC;
+pub const SYS = arch_bits.SYS;
+pub const VDSO = arch_bits.VDSO;
+pub const blkcnt_t = arch_bits.blkcnt_t;
+pub const blksize_t = arch_bits.blksize_t;
+pub const dev_t = arch_bits.dev_t;
+pub const ino_t = arch_bits.ino_t;
+pub const kernel_stat = arch_bits.kernel_stat;
+pub const libc_stat = arch_bits.libc_stat;
+pub const mcontext_t = arch_bits.mcontext_t;
+pub const mode_t = arch_bits.mode_t;
+pub const msghdr = arch_bits.msghdr;
+pub const msghdr_const = arch_bits.msghdr_const;
+pub const nlink_t = arch_bits.nlink_t;
+pub const off_t = arch_bits.off_t;
+pub const time_t = arch_bits.time_t;
+pub const timespec = arch_bits.timespec;
+pub const timeval = arch_bits.timeval;
+pub const timezone = arch_bits.timezone;
+pub const ucontext_t = arch_bits.ucontext_t;
+pub const user_desc = arch_bits.user_desc;
+
 pub const tls = @import("linux/tls.zig");
 pub const pie = @import("linux/start_pie.zig");
 pub const BPF = @import("linux/bpf.zig");
@@ -931,18 +981,18 @@ pub fn sigprocmask(flags: u32, noalias set: ?*const sigset_t, noalias oldset: ?*
 
 pub fn sigaction(sig: u6, noalias act: ?*const Sigaction, noalias oact: ?*Sigaction) usize {
     assert(sig >= 1);
-    assert(sig != SIGKILL);
-    assert(sig != SIGSTOP);
+    assert(sig != SIG.KILL);
+    assert(sig != SIG.STOP);
 
     var ksa: k_sigaction = undefined;
     var oldksa: k_sigaction = undefined;
     const mask_size = @sizeOf(@TypeOf(ksa.mask));
 
     if (act) |new| {
-        const restorer_fn = if ((new.flags & SA_SIGINFO) != 0) restore_rt else restore;
+        const restorer_fn = if ((new.flags & SA.SIGINFO) != 0) restore_rt else restore;
         ksa = k_sigaction{
             .handler = new.handler.handler,
-            .flags = new.flags | SA_RESTORER,
+            .flags = new.flags | SA.RESTORER,
             .mask = undefined,
             .restorer = @ptrCast(fn () callconv(.C) void, restorer_fn),
         };
@@ -1531,8 +1581,3341 @@ pub fn fadvise(fd: fd_t, offset: i64, len: i64, advice: usize) usize {
     }
 }
 
-test {
-    if (std.Target.current.os.tag == .linux) {
-        _ = @import("linux/test.zig");
+pub const E = switch (native_arch) {
+    .mips, .mipsel => @import("linux/errno/mips.zig").E,
+    .sparc, .sparcel, .sparcv9 => @import("linux/errno/sparc.zig").E,
+    else => @import("linux/errno/generic.zig").E,
+};
+
+pub const pid_t = i32;
+pub const fd_t = i32;
+pub const uid_t = u32;
+pub const gid_t = u32;
+pub const clock_t = isize;
+
+pub const NAME_MAX = 255;
+pub const PATH_MAX = 4096;
+pub const IOV_MAX = 1024;
+
+/// Largest hardware address length
+/// e.g. a mac address is a type of hardware address
+pub const MAX_ADDR_LEN = 32;
+
+pub const STDIN_FILENO = 0;
+pub const STDOUT_FILENO = 1;
+pub const STDERR_FILENO = 2;
+
+pub const AT = struct {
+    /// Special value used to indicate openat should use the current working directory
+    pub const FDCWD = -100;
+
+    /// Do not follow symbolic links
+    pub const SYMLINK_NOFOLLOW = 0x100;
+
+    /// Remove directory instead of unlinking file
+    pub const REMOVEDIR = 0x200;
+
+    /// Follow symbolic links.
+    pub const SYMLINK_FOLLOW = 0x400;
+
+    /// Suppress terminal automount traversal
+    pub const NO_AUTOMOUNT = 0x800;
+
+    /// Allow empty relative pathname
+    pub const EMPTY_PATH = 0x1000;
+
+    /// Type of synchronisation required from statx()
+    pub const STATX_SYNC_TYPE = 0x6000;
+
+    /// - Do whatever stat() does
+    pub const STATX_SYNC_AS_STAT = 0x0000;
+
+    /// - Force the attributes to be sync'd with the server
+    pub const STATX_FORCE_SYNC = 0x2000;
+
+    /// - Don't sync attributes with the server
+    pub const STATX_DONT_SYNC = 0x4000;
+
+    /// Apply to the entire subtree
+    pub const RECURSIVE = 0x8000;
+};
+
+pub const FALLOC = struct {
+    /// Default is extend size
+    pub const FL_KEEP_SIZE = 0x01;
+
+    /// De-allocates range
+    pub const FL_PUNCH_HOLE = 0x02;
+
+    /// Reserved codepoint
+    pub const FL_NO_HIDE_STALE = 0x04;
+
+    /// Removes a range of a file without leaving a hole in the file
+    pub const FL_COLLAPSE_RANGE = 0x08;
+
+    /// Converts a range of file to zeros preferably without issuing data IO
+    pub const FL_ZERO_RANGE = 0x10;
+
+    /// Inserts space within the file size without overwriting any existing data
+    pub const FL_INSERT_RANGE = 0x20;
+
+    /// Unshares shared blocks within the file size without overwriting any existing data
+    pub const FL_UNSHARE_RANGE = 0x40;
+};
+
+pub const FUTEX = struct {
+    pub const WAIT = 0;
+    pub const WAKE = 1;
+    pub const FD = 2;
+    pub const REQUEUE = 3;
+    pub const CMP_REQUEUE = 4;
+    pub const WAKE_OP = 5;
+    pub const LOCK_PI = 6;
+    pub const UNLOCK_PI = 7;
+    pub const TRYLOCK_PI = 8;
+    pub const WAIT_BITSET = 9;
+    pub const WAKE_BITSET = 10;
+    pub const WAIT_REQUEUE_PI = 11;
+    pub const CMP_REQUEUE_PI = 12;
+
+    pub const PRIVATE_FLAG = 128;
+
+    pub const CLOCK_REALTIME = 256;
+};
+
+pub const PROT = struct {
+    /// page can not be accessed
+    pub const NONE = 0x0;
+
+    /// page can be read
+    pub const READ = 0x1;
+
+    /// page can be written
+    pub const WRITE = 0x2;
+
+    /// page can be executed
+    pub const EXEC = 0x4;
+
+    /// page may be used for atomic ops
+    pub const SEM = switch (native_arch) {
+        // TODO: also xtensa
+        .mips, .mipsel, .mips64, .mips64el => 0x10,
+        else => 0x8,
+    };
+
+    /// mprotect flag: extend change to start of growsdown vma
+    pub const GROWSDOWN = 0x01000000;
+
+    /// mprotect flag: extend change to end of growsup vma
+    pub const GROWSUP = 0x02000000;
+};
+
+pub const FD_CLOEXEC = 1;
+
+pub const F_OK = 0;
+pub const X_OK = 1;
+pub const W_OK = 2;
+pub const R_OK = 4;
+
+pub const W = struct {
+    pub const NOHANG = 1;
+    pub const UNTRACED = 2;
+    pub const STOPPED = 2;
+    pub const EXITED = 4;
+    pub const CONTINUED = 8;
+    pub const NOWAIT = 0x1000000;
+
+    pub fn EXITSTATUS(s: u32) u8 {
+        return @intCast(u8, (s & 0xff00) >> 8);
     }
+    pub fn TERMSIG(s: u32) u32 {
+        return s & 0x7f;
+    }
+    pub fn STOPSIG(s: u32) u32 {
+        return WEXITSTATUS(s);
+    }
+    pub fn IFEXITED(s: u32) bool {
+        return WTERMSIG(s) == 0;
+    }
+    pub fn IFSTOPPED(s: u32) bool {
+        return @intCast(u16, ((s & 0xffff) *% 0x10001) >> 8) > 0x7f00;
+    }
+    pub fn IFSIGNALED(s: u32) bool {
+        return (s & 0xffff) -% 1 < 0xff;
+    }
+};
+
+// waitid id types
+pub const P = enum(c_uint) {
+    ALL = 0,
+    PID = 1,
+    PGID = 2,
+    PIDFD = 3,
+    _,
+};
+
+pub const SA = if (is_mips) struct {
+    pub const NOCLDSTOP = 1;
+    pub const NOCLDWAIT = 0x10000;
+    pub const SIGINFO = 8;
+    pub const RESTART = 0x10000000;
+    pub const RESETHAND = 0x80000000;
+    pub const ONSTACK = 0x08000000;
+    pub const NODEFER = 0x40000000;
+    pub const RESTORER = 0x04000000;
+} else if (is_sparc) struct {
+    pub const NOCLDSTOP = 0x8;
+    pub const NOCLDWAIT = 0x100;
+    pub const SIGINFO = 0x200;
+    pub const RESTART = 0x2;
+    pub const RESETHAND = 0x4;
+    pub const ONSTACK = 0x1;
+    pub const NODEFER = 0x20;
+    pub const RESTORER = 0x04000000;
+} else struct {
+    pub const NOCLDSTOP = 1;
+    pub const NOCLDWAIT = 2;
+    pub const SIGINFO = 4;
+    pub const RESTART = 0x10000000;
+    pub const RESETHAND = 0x80000000;
+    pub const ONSTACK = 0x08000000;
+    pub const NODEFER = 0x40000000;
+    pub const RESTORER = 0x04000000;
+};
+
+pub const SIG = if (is_mips) struct {
+    pub const BLOCK = 1;
+    pub const UNBLOCK = 2;
+    pub const SETMASK = 3;
+
+    pub const HUP = 1;
+    pub const INT = 2;
+    pub const QUIT = 3;
+    pub const ILL = 4;
+    pub const TRAP = 5;
+    pub const ABRT = 6;
+    pub const IOT = ABRT;
+    pub const BUS = 7;
+    pub const FPE = 8;
+    pub const KILL = 9;
+    pub const USR1 = 10;
+    pub const SEGV = 11;
+    pub const USR2 = 12;
+    pub const PIPE = 13;
+    pub const ALRM = 14;
+    pub const TERM = 15;
+    pub const STKFLT = 16;
+    pub const CHLD = 17;
+    pub const CONT = 18;
+    pub const STOP = 19;
+    pub const TSTP = 20;
+    pub const TTIN = 21;
+    pub const TTOU = 22;
+    pub const URG = 23;
+    pub const XCPU = 24;
+    pub const XFSZ = 25;
+    pub const VTALRM = 26;
+    pub const PROF = 27;
+    pub const WINCH = 28;
+    pub const IO = 29;
+    pub const POLL = 29;
+    pub const PWR = 30;
+    pub const SYS = 31;
+    pub const UNUSED = SIG.SYS;
+
+    pub const ERR = @intToPtr(?Sigaction.sigaction_fn, maxInt(usize));
+    pub const DFL = @intToPtr(?Sigaction.sigaction_fn, 0);
+    pub const IGN = @intToPtr(?Sigaction.sigaction_fn, 1);
+} else if (is_sparc) struct {
+    pub const BLOCK = 1;
+    pub const UNBLOCK = 2;
+    pub const SETMASK = 4;
+
+    pub const HUP = 1;
+    pub const INT = 2;
+    pub const QUIT = 3;
+    pub const ILL = 4;
+    pub const TRAP = 5;
+    pub const ABRT = 6;
+    pub const EMT = 7;
+    pub const FPE = 8;
+    pub const KILL = 9;
+    pub const BUS = 10;
+    pub const SEGV = 11;
+    pub const SYS = 12;
+    pub const PIPE = 13;
+    pub const ALRM = 14;
+    pub const TERM = 15;
+    pub const URG = 16;
+    pub const STOP = 17;
+    pub const TSTP = 18;
+    pub const CONT = 19;
+    pub const CHLD = 20;
+    pub const TTIN = 21;
+    pub const TTOU = 22;
+    pub const POLL = 23;
+    pub const XCPU = 24;
+    pub const XFSZ = 25;
+    pub const VTALRM = 26;
+    pub const PROF = 27;
+    pub const WINCH = 28;
+    pub const LOST = 29;
+    pub const USR1 = 30;
+    pub const USR2 = 31;
+    pub const IOT = ABRT;
+    pub const CLD = CHLD;
+    pub const PWR = LOST;
+    pub const IO = POLL;
+
+    pub const ERR = @intToPtr(?Sigaction.sigaction_fn, maxInt(usize));
+    pub const DFL = @intToPtr(?Sigaction.sigaction_fn, 0);
+    pub const IGN = @intToPtr(?Sigaction.sigaction_fn, 1);
+} else struct {
+    pub const BLOCK = 0;
+    pub const UNBLOCK = 1;
+    pub const SETMASK = 2;
+
+    pub const HUP = 1;
+    pub const INT = 2;
+    pub const QUIT = 3;
+    pub const ILL = 4;
+    pub const TRAP = 5;
+    pub const ABRT = 6;
+    pub const IOT = ABRT;
+    pub const BUS = 7;
+    pub const FPE = 8;
+    pub const KILL = 9;
+    pub const USR1 = 10;
+    pub const SEGV = 11;
+    pub const USR2 = 12;
+    pub const PIPE = 13;
+    pub const ALRM = 14;
+    pub const TERM = 15;
+    pub const STKFLT = 16;
+    pub const CHLD = 17;
+    pub const CONT = 18;
+    pub const STOP = 19;
+    pub const TSTP = 20;
+    pub const TTIN = 21;
+    pub const TTOU = 22;
+    pub const URG = 23;
+    pub const XCPU = 24;
+    pub const XFSZ = 25;
+    pub const VTALRM = 26;
+    pub const PROF = 27;
+    pub const WINCH = 28;
+    pub const IO = 29;
+    pub const POLL = 29;
+    pub const PWR = 30;
+    pub const SYS = 31;
+    pub const UNUSED = SIG.SYS;
+
+    pub const ERR = @intToPtr(?Sigaction.sigaction_fn, maxInt(usize));
+    pub const DFL = @intToPtr(?Sigaction.sigaction_fn, 0);
+    pub const IGN = @intToPtr(?Sigaction.sigaction_fn, 1);
+};
+
+pub const kernel_rwf = u32;
+
+pub const RWF = struct {
+    /// high priority request, poll if possible
+    pub const HIPRI: kernel_rwf = 0x00000001;
+
+    /// per-IO O_DSYNC
+    pub const DSYNC: kernel_rwf = 0x00000002;
+
+    /// per-IO O_SYNC
+    pub const SYNC: kernel_rwf = 0x00000004;
+
+    /// per-IO, return -EAGAIN if operation would block
+    pub const NOWAIT: kernel_rwf = 0x00000008;
+
+    /// per-IO O_APPEND
+    pub const APPEND: kernel_rwf = 0x00000010;
+};
+
+pub const SEEK = struct {
+    pub const SET = 0;
+    pub const CUR = 1;
+    pub const END = 2;
+};
+
+pub const SHUT = struct {
+    pub const RD = 0;
+    pub const WR = 1;
+    pub const RDWR = 2;
+};
+
+pub const SOCK = struct {
+    pub const STREAM = if (is_mips) 2 else 1;
+    pub const DGRAM = if (is_mips) 1 else 2;
+    pub const RAW = 3;
+    pub const RDM = 4;
+    pub const SEQPACKET = 5;
+    pub const DCCP = 6;
+    pub const PACKET = 10;
+    pub const CLOEXEC = 0o2000000;
+    pub const NONBLOCK = if (is_mips) 0o200 else 0o4000;
+};
+
+pub const PF = struct {
+    pub const UNSPEC = 0;
+    pub const LOCAL = 1;
+    pub const UNIX = PF_LOCAL;
+    pub const FILE = PF_LOCAL;
+    pub const INET = 2;
+    pub const AX25 = 3;
+    pub const IPX = 4;
+    pub const APPLETALK = 5;
+    pub const NETROM = 6;
+    pub const BRIDGE = 7;
+    pub const ATMPVC = 8;
+    pub const X25 = 9;
+    pub const INET6 = 10;
+    pub const ROSE = 11;
+    pub const DECnet = 12;
+    pub const NETBEUI = 13;
+    pub const SECURITY = 14;
+    pub const KEY = 15;
+    pub const NETLINK = 16;
+    pub const ROUTE = PF_NETLINK;
+    pub const PACKET = 17;
+    pub const ASH = 18;
+    pub const ECONET = 19;
+    pub const ATMSVC = 20;
+    pub const RDS = 21;
+    pub const SNA = 22;
+    pub const IRDA = 23;
+    pub const PPPOX = 24;
+    pub const WANPIPE = 25;
+    pub const LLC = 26;
+    pub const IB = 27;
+    pub const MPLS = 28;
+    pub const CAN = 29;
+    pub const TIPC = 30;
+    pub const BLUETOOTH = 31;
+    pub const IUCV = 32;
+    pub const RXRPC = 33;
+    pub const ISDN = 34;
+    pub const PHONET = 35;
+    pub const IEEE802154 = 36;
+    pub const CAIF = 37;
+    pub const ALG = 38;
+    pub const NFC = 39;
+    pub const VSOCK = 40;
+    pub const KCM = 41;
+    pub const QIPCRTR = 42;
+    pub const SMC = 43;
+    pub const XDP = 44;
+    pub const MAX = 45;
+};
+
+pub const AF = struct {
+    pub const UNSPEC = PF.UNSPEC;
+    pub const LOCAL = PF.LOCAL;
+    pub const UNIX = AF.LOCAL;
+    pub const FILE = AF.LOCAL;
+    pub const INET = PF.INET;
+    pub const AX25 = PF.AX25;
+    pub const IPX = PF.IPX;
+    pub const APPLETALK = PF.APPLETALK;
+    pub const NETROM = PF.NETROM;
+    pub const BRIDGE = PF.BRIDGE;
+    pub const ATMPVC = PF.ATMPVC;
+    pub const X25 = PF.X25;
+    pub const INET6 = PF.INET6;
+    pub const ROSE = PF.ROSE;
+    pub const DECnet = PF.DECnet;
+    pub const NETBEUI = PF.NETBEUI;
+    pub const SECURITY = PF.SECURITY;
+    pub const KEY = PF.KEY;
+    pub const NETLINK = PF.NETLINK;
+    pub const ROUTE = PF.ROUTE;
+    pub const PACKET = PF.PACKET;
+    pub const ASH = PF.ASH;
+    pub const ECONET = PF.ECONET;
+    pub const ATMSVC = PF.ATMSVC;
+    pub const RDS = PF.RDS;
+    pub const SNA = PF.SNA;
+    pub const IRDA = PF.IRDA;
+    pub const PPPOX = PF.PPPOX;
+    pub const WANPIPE = PF.WANPIPE;
+    pub const LLC = PF.LLC;
+    pub const IB = PF.IB;
+    pub const MPLS = PF.MPLS;
+    pub const CAN = PF.CAN;
+    pub const TIPC = PF.TIPC;
+    pub const BLUETOOTH = PF.BLUETOOTH;
+    pub const IUCV = PF.IUCV;
+    pub const RXRPC = PF.RXRPC;
+    pub const ISDN = PF.ISDN;
+    pub const PHONET = PF.PHONET;
+    pub const IEEE802154 = PF.IEEE802154;
+    pub const CAIF = PF.CAIF;
+    pub const ALG = PF.ALG;
+    pub const NFC = PF.NFC;
+    pub const VSOCK = PF.VSOCK;
+    pub const KCM = PF.KCM;
+    pub const QIPCRTR = PF.QIPCRTR;
+    pub const SMC = PF.SMC;
+    pub const XDP = PF.XDP;
+    pub const MAX = PF.MAX;
+};
+
+pub const SO = if (is_mips) struct {
+    pub const SECURITY_AUTHENTICATION = 22;
+    pub const SECURITY_ENCRYPTION_TRANSPORT = 23;
+    pub const SECURITY_ENCRYPTION_NETWORK = 24;
+
+    pub const BINDTODEVICE = 25;
+
+    pub const ATTACH_FILTER = 26;
+    pub const DETACH_FILTER = 27;
+    pub const GET_FILTER = ATTACH_FILTER;
+
+    pub const PEERNAME = 28;
+    pub const TIMESTAMP_OLD = 29;
+    pub const PASSSEC = 34;
+    pub const TIMESTAMPNS_OLD = 35;
+    pub const MARK = 36;
+    pub const TIMESTAMPING_OLD = 37;
+
+    pub const RXQ_OVFL = 40;
+    pub const WIFI_STATUS = 41;
+    pub const PEEK_OFF = 42;
+    pub const NOFCS = 43;
+    pub const LOCK_FILTER = 44;
+    pub const SELECT_ERR_QUEUE = 45;
+    pub const BUSY_POLL = 46;
+    pub const MAX_PACING_RATE = 47;
+    pub const BPF_EXTENSIONS = 48;
+    pub const INCOMING_CPU = 49;
+    pub const ATTACH_BPF = 50;
+    pub const DETACH_BPF = DETACH_FILTER;
+    pub const ATTACH_REUSEPORT_CBPF = 51;
+    pub const ATTACH_REUSEPORT_EBPF = 52;
+    pub const CNX_ADVICE = 53;
+    pub const MEMINFO = 55;
+    pub const INCOMING_NAPI_ID = 56;
+    pub const COOKIE = 57;
+    pub const PEERGROUPS = 59;
+    pub const ZEROCOPY = 60;
+    pub const TXTIME = 61;
+    pub const BINDTOIFINDEX = 62;
+    pub const TIMESTAMP_NEW = 63;
+    pub const TIMESTAMPNS_NEW = 64;
+    pub const TIMESTAMPING_NEW = 65;
+    pub const RCVTIMEO_NEW = 66;
+    pub const SNDTIMEO_NEW = 67;
+    pub const DETACH_REUSEPORT_BPF = 68;
+} else if (is_ppc or is_ppc64) struct {
+    pub const DEBUG = 1;
+    pub const REUSEADDR = 2;
+    pub const TYPE = 3;
+    pub const ERROR = 4;
+    pub const DONTROUTE = 5;
+    pub const BROADCAST = 6;
+    pub const SNDBUF = 7;
+    pub const RCVBUF = 8;
+    pub const KEEPALIVE = 9;
+    pub const OOBINLINE = 10;
+    pub const NO_CHECK = 11;
+    pub const PRIORITY = 12;
+    pub const LINGER = 13;
+    pub const BSDCOMPAT = 14;
+    pub const REUSEPORT = 15;
+    pub const RCVLOWAT = 16;
+    pub const SNDLOWAT = 17;
+    pub const RCVTIMEO = 18;
+    pub const SNDTIMEO = 19;
+    pub const PASSCRED = 20;
+    pub const PEERCRED = 21;
+    pub const ACCEPTCONN = 30;
+    pub const PEERSEC = 31;
+    pub const SNDBUFFORCE = 32;
+    pub const RCVBUFFORCE = 33;
+    pub const PROTOCOL = 38;
+    pub const DOMAIN = 39;
+
+    pub const SECURITY_AUTHENTICATION = 22;
+    pub const SECURITY_ENCRYPTION_TRANSPORT = 23;
+    pub const SECURITY_ENCRYPTION_NETWORK = 24;
+
+    pub const BINDTODEVICE = 25;
+
+    pub const ATTACH_FILTER = 26;
+    pub const DETACH_FILTER = 27;
+    pub const GET_FILTER = ATTACH_FILTER;
+
+    pub const PEERNAME = 28;
+    pub const TIMESTAMP_OLD = 29;
+    pub const PASSSEC = 34;
+    pub const TIMESTAMPNS_OLD = 35;
+    pub const MARK = 36;
+    pub const TIMESTAMPING_OLD = 37;
+
+    pub const RXQ_OVFL = 40;
+    pub const WIFI_STATUS = 41;
+    pub const PEEK_OFF = 42;
+    pub const NOFCS = 43;
+    pub const LOCK_FILTER = 44;
+    pub const SELECT_ERR_QUEUE = 45;
+    pub const BUSY_POLL = 46;
+    pub const MAX_PACING_RATE = 47;
+    pub const BPF_EXTENSIONS = 48;
+    pub const INCOMING_CPU = 49;
+    pub const ATTACH_BPF = 50;
+    pub const DETACH_BPF = DETACH_FILTER;
+    pub const ATTACH_REUSEPORT_CBPF = 51;
+    pub const ATTACH_REUSEPORT_EBPF = 52;
+    pub const CNX_ADVICE = 53;
+    pub const MEMINFO = 55;
+    pub const INCOMING_NAPI_ID = 56;
+    pub const COOKIE = 57;
+    pub const PEERGROUPS = 59;
+    pub const ZEROCOPY = 60;
+    pub const TXTIME = 61;
+    pub const BINDTOIFINDEX = 62;
+    pub const TIMESTAMP_NEW = 63;
+    pub const TIMESTAMPNS_NEW = 64;
+    pub const TIMESTAMPING_NEW = 65;
+    pub const RCVTIMEO_NEW = 66;
+    pub const SNDTIMEO_NEW = 67;
+    pub const DETACH_REUSEPORT_BPF = 68;
+} else struct {
+    pub const DEBUG = 1;
+    pub const REUSEADDR = 2;
+    pub const TYPE = 3;
+    pub const ERROR = 4;
+    pub const DONTROUTE = 5;
+    pub const BROADCAST = 6;
+    pub const SNDBUF = 7;
+    pub const RCVBUF = 8;
+    pub const KEEPALIVE = 9;
+    pub const OOBINLINE = 10;
+    pub const NO_CHECK = 11;
+    pub const PRIORITY = 12;
+    pub const LINGER = 13;
+    pub const BSDCOMPAT = 14;
+    pub const REUSEPORT = 15;
+    pub const PASSCRED = 16;
+    pub const PEERCRED = 17;
+    pub const RCVLOWAT = 18;
+    pub const SNDLOWAT = 19;
+    pub const RCVTIMEO = 20;
+    pub const SNDTIMEO = 21;
+    pub const ACCEPTCONN = 30;
+    pub const PEERSEC = 31;
+    pub const SNDBUFFORCE = 32;
+    pub const RCVBUFFORCE = 33;
+    pub const PROTOCOL = 38;
+    pub const DOMAIN = 39;
+
+    pub const SECURITY_AUTHENTICATION = 22;
+    pub const SECURITY_ENCRYPTION_TRANSPORT = 23;
+    pub const SECURITY_ENCRYPTION_NETWORK = 24;
+
+    pub const BINDTODEVICE = 25;
+
+    pub const ATTACH_FILTER = 26;
+    pub const DETACH_FILTER = 27;
+    pub const GET_FILTER = ATTACH_FILTER;
+
+    pub const PEERNAME = 28;
+    pub const TIMESTAMP_OLD = 29;
+    pub const PASSSEC = 34;
+    pub const TIMESTAMPNS_OLD = 35;
+    pub const MARK = 36;
+    pub const TIMESTAMPING_OLD = 37;
+
+    pub const RXQ_OVFL = 40;
+    pub const WIFI_STATUS = 41;
+    pub const PEEK_OFF = 42;
+    pub const NOFCS = 43;
+    pub const LOCK_FILTER = 44;
+    pub const SELECT_ERR_QUEUE = 45;
+    pub const BUSY_POLL = 46;
+    pub const MAX_PACING_RATE = 47;
+    pub const BPF_EXTENSIONS = 48;
+    pub const INCOMING_CPU = 49;
+    pub const ATTACH_BPF = 50;
+    pub const DETACH_BPF = DETACH_FILTER;
+    pub const ATTACH_REUSEPORT_CBPF = 51;
+    pub const ATTACH_REUSEPORT_EBPF = 52;
+    pub const CNX_ADVICE = 53;
+    pub const MEMINFO = 55;
+    pub const INCOMING_NAPI_ID = 56;
+    pub const COOKIE = 57;
+    pub const PEERGROUPS = 59;
+    pub const ZEROCOPY = 60;
+    pub const TXTIME = 61;
+    pub const BINDTOIFINDEX = 62;
+    pub const TIMESTAMP_NEW = 63;
+    pub const TIMESTAMPNS_NEW = 64;
+    pub const TIMESTAMPING_NEW = 65;
+    pub const RCVTIMEO_NEW = 66;
+    pub const SNDTIMEO_NEW = 67;
+    pub const DETACH_REUSEPORT_BPF = 68;
+};
+
+pub const SCM = struct {
+    pub const WIFI_STATUS = SO.WIFI_STATUS;
+    pub const TIMESTAMPING_OPT_STATS = 54;
+    pub const TIMESTAMPING_PKTINFO = 58;
+    pub const TXTIME = SO.TXTIME;
+};
+
+pub const SOL = struct {
+    pub const SOCKET = if (is_mips) 65535 else 1;
+
+    pub const IP = 0;
+    pub const IPV6 = 41;
+    pub const ICMPV6 = 58;
+
+    pub const RAW = 255;
+    pub const DECNET = 261;
+    pub const X25 = 262;
+    pub const PACKET = 263;
+    pub const ATM = 264;
+    pub const AAL = 265;
+    pub const IRDA = 266;
+    pub const NETBEUI = 267;
+    pub const LLC = 268;
+    pub const DCCP = 269;
+    pub const NETLINK = 270;
+    pub const TIPC = 271;
+    pub const RXRPC = 272;
+    pub const PPPOL2TP = 273;
+    pub const BLUETOOTH = 274;
+    pub const PNPIPE = 275;
+    pub const RDS = 276;
+    pub const IUCV = 277;
+    pub const CAIF = 278;
+    pub const ALG = 279;
+    pub const NFC = 280;
+    pub const KCM = 281;
+    pub const TLS = 282;
+    pub const XDP = 283;
+};
+
+pub const SOMAXCONN = 128;
+
+pub const IP = struct {
+    pub const TOS = 1;
+    pub const TTL = 2;
+    pub const HDRINCL = 3;
+    pub const OPTIONS = 4;
+    pub const ROUTER_ALERT = 5;
+    pub const RECVOPTS = 6;
+    pub const RETOPTS = 7;
+    pub const PKTINFO = 8;
+    pub const PKTOPTIONS = 9;
+    pub const PMTUDISC = 10;
+    pub const MTU_DISCOVER = 10;
+    pub const RECVERR = 11;
+    pub const RECVTTL = 12;
+    pub const RECVTOS = 13;
+    pub const MTU = 14;
+    pub const FREEBIND = 15;
+    pub const IPSEC_POLICY = 16;
+    pub const XFRM_POLICY = 17;
+    pub const PASSSEC = 18;
+    pub const TRANSPARENT = 19;
+    pub const ORIGDSTADDR = 20;
+    pub const RECVORIGDSTADDR = IP_ORIGDSTADDR;
+    pub const MINTTL = 21;
+    pub const NODEFRAG = 22;
+    pub const CHECKSUM = 23;
+    pub const BIND_ADDRESS_NO_PORT = 24;
+    pub const RECVFRAGSIZE = 25;
+    pub const MULTICAST_IF = 32;
+    pub const MULTICAST_TTL = 33;
+    pub const MULTICAST_LOOP = 34;
+    pub const ADD_MEMBERSHIP = 35;
+    pub const DROP_MEMBERSHIP = 36;
+    pub const UNBLOCK_SOURCE = 37;
+    pub const BLOCK_SOURCE = 38;
+    pub const ADD_SOURCE_MEMBERSHIP = 39;
+    pub const DROP_SOURCE_MEMBERSHIP = 40;
+    pub const MSFILTER = 41;
+    pub const MULTICAST_ALL = 49;
+    pub const UNICAST_IF = 50;
+
+    pub const RECVRETOPTS = IP_RETOPTS;
+
+    pub const PMTUDISC_DONT = 0;
+    pub const PMTUDISC_WANT = 1;
+    pub const PMTUDISC_DO = 2;
+    pub const PMTUDISC_PROBE = 3;
+    pub const PMTUDISC_INTERFACE = 4;
+    pub const PMTUDISC_OMIT = 5;
+
+    pub const DEFAULT_MULTICAST_TTL = 1;
+    pub const DEFAULT_MULTICAST_LOOP = 1;
+    pub const MAX_MEMBERSHIPS = 20;
+};
+
+/// IPv6 socket options
+pub const IPV6 = struct {
+    pub const ADDRFORM = 1;
+    pub const @"2292PKTINFO" = 2;
+    pub const @"2292HOPOPTS" = 3;
+    pub const @"2292DSTOPTS" = 4;
+    pub const @"2292RTHDR" = 5;
+    pub const @"2292PKTOPTIONS" = 6;
+    pub const CHECKSUM = 7;
+    pub const @"2292HOPLIMIT" = 8;
+    pub const NEXTHOP = 9;
+    pub const AUTHHDR = 10;
+    pub const FLOWINFO = 11;
+
+    pub const UNICAST_HOPS = 16;
+    pub const MULTICAST_IF = 17;
+    pub const MULTICAST_HOPS = 18;
+    pub const MULTICAST_LOOP = 19;
+    pub const ADD_MEMBERSHIP = 20;
+    pub const DROP_MEMBERSHIP = 21;
+    pub const ROUTER_ALERT = 22;
+    pub const MTU_DISCOVER = 23;
+    pub const MTU = 24;
+    pub const RECVERR = 25;
+    pub const V6ONLY = 26;
+    pub const JOIN_ANYCAST = 27;
+    pub const LEAVE_ANYCAST = 28;
+
+    // IPV6_MTU_DISCOVER values
+    pub const PMTUDISC_DONT = 0;
+    pub const PMTUDISC_WANT = 1;
+    pub const PMTUDISC_DO = 2;
+    pub const PMTUDISC_PROBE = 3;
+    pub const PMTUDISC_INTERFACE = 4;
+    pub const PMTUDISC_OMIT = 5;
+
+    // Flowlabel
+    pub const FLOWLABEL_MGR = 32;
+    pub const FLOWINFO_SEND = 33;
+    pub const IPSEC_POLICY = 34;
+    pub const XFRM_POLICY = 35;
+    pub const HDRINCL = 36;
+
+    // Advanced API (RFC3542) (1)
+    pub const RECVPKTINFO = 49;
+    pub const PKTINFO = 50;
+    pub const RECVHOPLIMIT = 51;
+    pub const HOPLIMIT = 52;
+    pub const RECVHOPOPTS = 53;
+    pub const HOPOPTS = 54;
+    pub const RTHDRDSTOPTS = 55;
+    pub const RECVRTHDR = 56;
+    pub const RTHDR = 57;
+    pub const RECVDSTOPTS = 58;
+    pub const DSTOPTS = 59;
+    pub const RECVPATHMTU = 60;
+    pub const PATHMTU = 61;
+    pub const DONTFRAG = 62;
+
+    // Advanced API (RFC3542) (2)
+    pub const RECVTCLASS = 66;
+    pub const TCLASS = 67;
+
+    pub const AUTOFLOWLABEL = 70;
+
+    // RFC5014: Source address selection
+    pub const ADDR_PREFERENCES = 72;
+
+    pub const PREFER_SRC_TMP = 0x0001;
+    pub const PREFER_SRC_PUBLIC = 0x0002;
+    pub const PREFER_SRC_PUBTMP_DEFAULT = 0x0100;
+    pub const PREFER_SRC_COA = 0x0004;
+    pub const PREFER_SRC_HOME = 0x0400;
+    pub const PREFER_SRC_CGA = 0x0008;
+    pub const PREFER_SRC_NONCGA = 0x0800;
+
+    // RFC5082: Generalized Ttl Security Mechanism
+    pub const MINHOPCOUNT = 73;
+
+    pub const ORIGDSTADDR = 74;
+    pub const RECVORIGDSTADDR = IPV6_ORIGDSTADDR;
+    pub const TRANSPARENT = 75;
+    pub const UNICAST_IF = 76;
+    pub const RECVFRAGSIZE = 77;
+    pub const FREEBIND = 78;
+};
+
+pub const MSG = struct {
+    pub const OOB = 0x0001;
+    pub const PEEK = 0x0002;
+    pub const DONTROUTE = 0x0004;
+    pub const CTRUNC = 0x0008;
+    pub const PROXY = 0x0010;
+    pub const TRUNC = 0x0020;
+    pub const DONTWAIT = 0x0040;
+    pub const EOR = 0x0080;
+    pub const WAITALL = 0x0100;
+    pub const FIN = 0x0200;
+    pub const SYN = 0x0400;
+    pub const CONFIRM = 0x0800;
+    pub const RST = 0x1000;
+    pub const ERRQUEUE = 0x2000;
+    pub const NOSIGNAL = 0x4000;
+    pub const MORE = 0x8000;
+    pub const WAITFORONE = 0x10000;
+    pub const BATCH = 0x40000;
+    pub const ZEROCOPY = 0x4000000;
+    pub const FASTOPEN = 0x20000000;
+    pub const CMSG_CLOEXEC = 0x40000000;
+};
+
+pub const DT = struct {
+    pub const UNKNOWN = 0;
+    pub const FIFO = 1;
+    pub const CHR = 2;
+    pub const DIR = 4;
+    pub const BLK = 6;
+    pub const REG = 8;
+    pub const LNK = 10;
+    pub const SOCK = 12;
+    pub const WHT = 14;
+};
+
+pub const T = struct {
+    pub const CGETS = if (is_mips) 0x540D else 0x5401;
+    pub const CSETS = 0x5402;
+    pub const CSETSW = 0x5403;
+    pub const CSETSF = 0x5404;
+    pub const CGETA = 0x5405;
+    pub const CSETA = 0x5406;
+    pub const CSETAW = 0x5407;
+    pub const CSETAF = 0x5408;
+    pub const CSBRK = 0x5409;
+    pub const CXONC = 0x540A;
+    pub const CFLSH = 0x540B;
+    pub const IOCEXCL = 0x540C;
+    pub const IOCNXCL = 0x540D;
+    pub const IOCSCTTY = 0x540E;
+    pub const IOCGPGRP = 0x540F;
+    pub const IOCSPGRP = 0x5410;
+    pub const IOCOUTQ = if (is_mips) 0x7472 else 0x5411;
+    pub const IOCSTI = 0x5412;
+    pub const IOCGWINSZ = if (is_mips or is_ppc64) 0x40087468 else 0x5413;
+    pub const IOCSWINSZ = if (is_mips or is_ppc64) 0x80087467 else 0x5414;
+    pub const IOCMGET = 0x5415;
+    pub const IOCMBIS = 0x5416;
+    pub const IOCMBIC = 0x5417;
+    pub const IOCMSET = 0x5418;
+    pub const IOCGSOFTCAR = 0x5419;
+    pub const IOCSSOFTCAR = 0x541A;
+    pub const FIONREAD = if (is_mips) 0x467F else 0x541B;
+    pub const IOCINQ = FIONREAD;
+    pub const IOCLINUX = 0x541C;
+    pub const IOCCONS = 0x541D;
+    pub const IOCGSERIAL = 0x541E;
+    pub const IOCSSERIAL = 0x541F;
+    pub const IOCPKT = 0x5420;
+    pub const FIONBIO = 0x5421;
+    pub const IOCNOTTY = 0x5422;
+    pub const IOCSETD = 0x5423;
+    pub const IOCGETD = 0x5424;
+    pub const CSBRKP = 0x5425;
+    pub const IOCSBRK = 0x5427;
+    pub const IOCCBRK = 0x5428;
+    pub const IOCGSID = 0x5429;
+    pub const IOCGRS485 = 0x542E;
+    pub const IOCSRS485 = 0x542F;
+    pub const IOCGPTN = 0x80045430;
+    pub const IOCSPTLCK = 0x40045431;
+    pub const IOCGDEV = 0x80045432;
+    pub const CGETX = 0x5432;
+    pub const CSETX = 0x5433;
+    pub const CSETXF = 0x5434;
+    pub const CSETXW = 0x5435;
+    pub const IOCSIG = 0x40045436;
+    pub const IOCVHANGUP = 0x5437;
+    pub const IOCGPKT = 0x80045438;
+    pub const IOCGPTLCK = 0x80045439;
+    pub const IOCGEXCL = 0x80045440;
+};
+
+pub const EPOLL = struct {
+    pub const CLOEXEC = O.CLOEXEC;
+
+    pub const CTL_ADD = 1;
+    pub const CTL_DEL = 2;
+    pub const CTL_MOD = 3;
+
+    pub const IN = 0x001;
+    pub const PRI = 0x002;
+    pub const OUT = 0x004;
+    pub const RDNORM = 0x040;
+    pub const RDBAND = 0x080;
+    pub const WRNORM = if (is_mips) 0x004 else 0x100;
+    pub const WRBAND = if (is_mips) 0x100 else 0x200;
+    pub const MSG = 0x400;
+    pub const ERR = 0x008;
+    pub const HUP = 0x010;
+    pub const RDHUP = 0x2000;
+    pub const EXCLUSIVE = (@as(u32, 1) << 28);
+    pub const WAKEUP = (@as(u32, 1) << 29);
+    pub const ONESHOT = (@as(u32, 1) << 30);
+    pub const ET = (@as(u32, 1) << 31);
+};
+
+pub const CLOCK = struct {
+    pub const REALTIME = 0;
+    pub const MONOTONIC = 1;
+    pub const PROCESS_CPUTIME_ID = 2;
+    pub const THREAD_CPUTIME_ID = 3;
+    pub const MONOTONIC_RAW = 4;
+    pub const REALTIME_COARSE = 5;
+    pub const MONOTONIC_COARSE = 6;
+    pub const BOOTTIME = 7;
+    pub const REALTIME_ALARM = 8;
+    pub const BOOTTIME_ALARM = 9;
+    pub const SGI_CYCLE = 10;
+    pub const TAI = 11;
+};
+
+pub const CSIGNAL = 0x000000ff;
+
+pub const CLONE = struct {
+    pub const VM = 0x00000100;
+    pub const FS = 0x00000200;
+    pub const FILES = 0x00000400;
+    pub const SIGHAND = 0x00000800;
+    pub const PIDFD = 0x00001000;
+    pub const PTRACE = 0x00002000;
+    pub const VFORK = 0x00004000;
+    pub const PARENT = 0x00008000;
+    pub const THREAD = 0x00010000;
+    pub const NEWNS = 0x00020000;
+    pub const SYSVSEM = 0x00040000;
+    pub const SETTLS = 0x00080000;
+    pub const PARENT_SETTID = 0x00100000;
+    pub const CHILD_CLEARTID = 0x00200000;
+    pub const DETACHED = 0x00400000;
+    pub const UNTRACED = 0x00800000;
+    pub const CHILD_SETTID = 0x01000000;
+    pub const NEWCGROUP = 0x02000000;
+    pub const NEWUTS = 0x04000000;
+    pub const NEWIPC = 0x08000000;
+    pub const NEWUSER = 0x10000000;
+    pub const NEWPID = 0x20000000;
+    pub const NEWNET = 0x40000000;
+    pub const IO = 0x80000000;
+
+    // Flags for the clone3() syscall.
+
+    /// Clear any signal handler and reset to SIG_DFL.
+    pub const CLEAR_SIGHAND = 0x100000000;
+    /// Clone into a specific cgroup given the right permissions.
+    pub const INTO_CGROUP = 0x200000000;
+
+    // cloning flags intersect with CSIGNAL so can be used with unshare and clone3 syscalls only.
+
+    /// New time namespace
+    pub const NEWTIME = 0x00000080;
+};
+
+pub const EFD = struct {
+    pub const SEMAPHORE = 1;
+    pub const CLOEXEC = O.CLOEXEC;
+    pub const NONBLOCK = O.NONBLOCK;
+};
+
+pub const MS = struct {
+    pub const RDONLY = 1;
+    pub const NOSUID = 2;
+    pub const NODEV = 4;
+    pub const NOEXEC = 8;
+    pub const SYNCHRONOUS = 16;
+    pub const REMOUNT = 32;
+    pub const MANDLOCK = 64;
+    pub const DIRSYNC = 128;
+    pub const NOATIME = 1024;
+    pub const NODIRATIME = 2048;
+    pub const BIND = 4096;
+    pub const MOVE = 8192;
+    pub const REC = 16384;
+    pub const SILENT = 32768;
+    pub const POSIXACL = (1 << 16);
+    pub const UNBINDABLE = (1 << 17);
+    pub const PRIVATE = (1 << 18);
+    pub const SLAVE = (1 << 19);
+    pub const SHARED = (1 << 20);
+    pub const RELATIME = (1 << 21);
+    pub const KERNMOUNT = (1 << 22);
+    pub const I_VERSION = (1 << 23);
+    pub const STRICTATIME = (1 << 24);
+    pub const LAZYTIME = (1 << 25);
+    pub const NOREMOTELOCK = (1 << 27);
+    pub const NOSEC = (1 << 28);
+    pub const BORN = (1 << 29);
+    pub const ACTIVE = (1 << 30);
+    pub const NOUSER = (1 << 31);
+
+    pub const RMT_MASK = (RDONLY | SYNCHRONOUS | MANDLOCK | I_VERSION | LAZYTIME);
+
+    pub const MGC_VAL = 0xc0ed0000;
+    pub const MGC_MSK = 0xffff0000;
+};
+
+pub const MNT = struct {
+    pub const FORCE = 1;
+    pub const DETACH = 2;
+    pub const EXPIRE = 4;
+};
+
+pub const UMOUNT_NOFOLLOW = 8;
+
+pub const IN = struct {
+    pub const CLOEXEC = O.CLOEXEC;
+    pub const NONBLOCK = O.NONBLOCK;
+
+    pub const ACCESS = 0x00000001;
+    pub const MODIFY = 0x00000002;
+    pub const ATTRIB = 0x00000004;
+    pub const CLOSE_WRITE = 0x00000008;
+    pub const CLOSE_NOWRITE = 0x00000010;
+    pub const CLOSE = CLOSE_WRITE | CLOSE_NOWRITE;
+    pub const OPEN = 0x00000020;
+    pub const MOVED_FROM = 0x00000040;
+    pub const MOVED_TO = 0x00000080;
+    pub const MOVE = MOVED_FROM | MOVED_TO;
+    pub const CREATE = 0x00000100;
+    pub const DELETE = 0x00000200;
+    pub const DELETE_SELF = 0x00000400;
+    pub const MOVE_SELF = 0x00000800;
+    pub const ALL_EVENTS = 0x00000fff;
+
+    pub const UNMOUNT = 0x00002000;
+    pub const Q_OVERFLOW = 0x00004000;
+    pub const IGNORED = 0x00008000;
+
+    pub const ONLYDIR = 0x01000000;
+    pub const DONT_FOLLOW = 0x02000000;
+    pub const EXCL_UNLINK = 0x04000000;
+    pub const MASK_ADD = 0x20000000;
+
+    pub const ISDIR = 0x40000000;
+    pub const ONESHOT = 0x80000000;
+};
+
+pub const S = struct {
+    pub const IFMT = 0o170000;
+
+    pub const IFDIR = 0o040000;
+    pub const IFCHR = 0o020000;
+    pub const IFBLK = 0o060000;
+    pub const IFREG = 0o100000;
+    pub const IFIFO = 0o010000;
+    pub const IFLNK = 0o120000;
+    pub const IFSOCK = 0o140000;
+
+    pub const ISUID = 0o4000;
+    pub const ISGID = 0o2000;
+    pub const ISVTX = 0o1000;
+    pub const IRUSR = 0o400;
+    pub const IWUSR = 0o200;
+    pub const IXUSR = 0o100;
+    pub const IRWXU = 0o700;
+    pub const IRGRP = 0o040;
+    pub const IWGRP = 0o020;
+    pub const IXGRP = 0o010;
+    pub const IRWXG = 0o070;
+    pub const IROTH = 0o004;
+    pub const IWOTH = 0o002;
+    pub const IXOTH = 0o001;
+    pub const IRWXO = 0o007;
+
+    pub fn ISREG(m: u32) bool {
+        return m & IFMT == IFREG;
+    }
+
+    pub fn ISDIR(m: u32) bool {
+        return m & IFMT == IFDIR;
+    }
+
+    pub fn ISCHR(m: u32) bool {
+        return m & IFMT == IFCHR;
+    }
+
+    pub fn ISBLK(m: u32) bool {
+        return m & IFMT == IFBLK;
+    }
+
+    pub fn ISFIFO(m: u32) bool {
+        return m & IFMT == IFIFO;
+    }
+
+    pub fn ISLNK(m: u32) bool {
+        return m & IFMT == IFLNK;
+    }
+
+    pub fn ISSOCK(m: u32) bool {
+        return m & IFMT == IFSOCK;
+    }
+};
+
+pub const UTIME = struct {
+    pub const NOW = 0x3fffffff;
+    pub const OMIT = 0x3ffffffe;
+};
+
+pub const TFD = struct {
+    pub const NONBLOCK = O.NONBLOCK;
+    pub const CLOEXEC = O.CLOEXEC;
+
+    pub const TIMER_ABSTIME = 1;
+    pub const TIMER_CANCEL_ON_SET = (1 << 1);
+};
+
+pub const winsize = extern struct {
+    ws_row: u16,
+    ws_col: u16,
+    ws_xpixel: u16,
+    ws_ypixel: u16,
+};
+
+/// NSIG is the total number of signals defined.
+/// As signal numbers are sequential, NSIG is one greater than the largest defined signal number.
+pub const NSIG = if (is_mips) 128 else 65;
+
+pub const sigset_t = [1024 / 32]u32;
+
+pub const all_mask: sigset_t = [_]u32{0xffffffff} ** sigset_t.len;
+pub const app_mask: sigset_t = [2]u32{ 0xfffffffc, 0x7fffffff } ++ [_]u32{0xffffffff} ** 30;
+
+pub const k_sigaction = switch (native_arch) {
+    .mips, .mipsel => extern struct {
+        flags: c_uint,
+        handler: ?fn (c_int) callconv(.C) void,
+        mask: [4]c_ulong,
+        restorer: fn () callconv(.C) void,
+    },
+    .mips64, .mips64el => extern struct {
+        flags: c_uint,
+        handler: ?fn (c_int) callconv(.C) void,
+        mask: [2]c_ulong,
+        restorer: fn () callconv(.C) void,
+    },
+    else => extern struct {
+        handler: ?fn (c_int) callconv(.C) void,
+        flags: c_ulong,
+        restorer: fn () callconv(.C) void,
+        mask: [2]c_uint,
+    },
+};
+
+/// Renamed from `sigaction` to `Sigaction` to avoid conflict with the syscall.
+pub const Sigaction = extern struct {
+    pub const handler_fn = fn (c_int) callconv(.C) void;
+    pub const sigaction_fn = fn (c_int, *const siginfo_t, ?*const c_void) callconv(.C) void;
+
+    handler: extern union {
+        handler: ?handler_fn,
+        sigaction: ?sigaction_fn,
+    },
+    mask: sigset_t,
+    flags: c_uint,
+    restorer: ?fn () callconv(.C) void = null,
+};
+
+pub const empty_sigset = [_]u32{0} ** @typeInfo(sigset_t).Array.len;
+
+pub const SFD = struct {
+    pub const CLOEXEC = O.CLOEXEC;
+    pub const NONBLOCK = O.NONBLOCK;
+};
+
+pub const signalfd_siginfo = extern struct {
+    signo: u32,
+    errno: i32,
+    code: i32,
+    pid: u32,
+    uid: uid_t,
+    fd: i32,
+    tid: u32,
+    band: u32,
+    overrun: u32,
+    trapno: u32,
+    status: i32,
+    int: i32,
+    ptr: u64,
+    utime: u64,
+    stime: u64,
+    addr: u64,
+    addr_lsb: u16,
+    __pad2: u16,
+    syscall: i32,
+    call_addr: u64,
+    native_arch: u32,
+    __pad: [28]u8,
+};
+
+pub const in_port_t = u16;
+pub const sa_family_t = u16;
+pub const socklen_t = u32;
+
+pub const sockaddr = extern struct {
+    family: sa_family_t,
+    data: [14]u8,
+};
+
+pub const sockaddr_storage = std.x.os.Socket.Address.Native.Storage;
+
+/// IPv4 socket address
+pub const sockaddr_in = extern struct {
+    family: sa_family_t = AF_INET,
+    port: in_port_t,
+    addr: u32,
+    zero: [8]u8 = [8]u8{ 0, 0, 0, 0, 0, 0, 0, 0 },
+};
+
+/// IPv6 socket address
+pub const sockaddr_in6 = extern struct {
+    family: sa_family_t = AF_INET6,
+    port: in_port_t,
+    flowinfo: u32,
+    addr: [16]u8,
+    scope_id: u32,
+};
+
+/// UNIX domain socket address
+pub const sockaddr_un = extern struct {
+    family: sa_family_t = AF_UNIX,
+    path: [108]u8,
+};
+
+pub const mmsghdr = extern struct {
+    msg_hdr: msghdr,
+    msg_len: u32,
+};
+
+pub const mmsghdr_const = extern struct {
+    msg_hdr: msghdr_const,
+    msg_len: u32,
+};
+
+pub const epoll_data = extern union {
+    ptr: usize,
+    fd: i32,
+    @"u32": u32,
+    @"u64": u64,
+};
+
+// On x86_64 the structure is packed so that it matches the definition of its
+// 32bit counterpart
+pub const epoll_event = switch (native_arch) {
+    .x86_64 => packed struct {
+        events: u32,
+        data: epoll_data,
+    },
+    else => extern struct {
+        events: u32,
+        data: epoll_data,
+    },
+};
+
+pub const VFS_CAP_REVISION_MASK = 0xFF000000;
+pub const VFS_CAP_REVISION_SHIFT = 24;
+pub const VFS_CAP_FLAGS_MASK = ~VFS_CAP_REVISION_MASK;
+pub const VFS_CAP_FLAGS_EFFECTIVE = 0x000001;
+
+pub const VFS_CAP_REVISION_1 = 0x01000000;
+pub const VFS_CAP_U32_1 = 1;
+pub const XATTR_CAPS_SZ_1 = @sizeOf(u32) * (1 + 2 * VFS_CAP_U32_1);
+
+pub const VFS_CAP_REVISION_2 = 0x02000000;
+pub const VFS_CAP_U32_2 = 2;
+pub const XATTR_CAPS_SZ_2 = @sizeOf(u32) * (1 + 2 * VFS_CAP_U32_2);
+
+pub const XATTR_CAPS_SZ = XATTR_CAPS_SZ_2;
+pub const VFS_CAP_U32 = VFS_CAP_U32_2;
+pub const VFS_CAP_REVISION = VFS_CAP_REVISION_2;
+
+pub const vfs_cap_data = extern struct {
+    //all of these are mandated as little endian
+    //when on disk.
+    const Data = struct {
+        permitted: u32,
+        inheritable: u32,
+    };
+
+    magic_etc: u32,
+    data: [VFS_CAP_U32]Data,
+};
+
+pub const CAP = struct {
+    pub const CHOWN = 0;
+    pub const DAC_OVERRIDE = 1;
+    pub const DAC_READ_SEARCH = 2;
+    pub const FOWNER = 3;
+    pub const FSETID = 4;
+    pub const KILL = 5;
+    pub const SETGID = 6;
+    pub const SETUID = 7;
+    pub const SETPCAP = 8;
+    pub const LINUX_IMMUTABLE = 9;
+    pub const NET_BIND_SERVICE = 10;
+    pub const NET_BROADCAST = 11;
+    pub const NET_ADMIN = 12;
+    pub const NET_RAW = 13;
+    pub const IPC_LOCK = 14;
+    pub const IPC_OWNER = 15;
+    pub const SYS_MODULE = 16;
+    pub const SYS_RAWIO = 17;
+    pub const SYS_CHROOT = 18;
+    pub const SYS_PTRACE = 19;
+    pub const SYS_PACCT = 20;
+    pub const SYS_ADMIN = 21;
+    pub const SYS_BOOT = 22;
+    pub const SYS_NICE = 23;
+    pub const SYS_RESOURCE = 24;
+    pub const SYS_TIME = 25;
+    pub const SYS_TTY_CONFIG = 26;
+    pub const MKNOD = 27;
+    pub const LEASE = 28;
+    pub const AUDIT_WRITE = 29;
+    pub const AUDIT_CONTROL = 30;
+    pub const SETFCAP = 31;
+    pub const MAC_OVERRIDE = 32;
+    pub const MAC_ADMIN = 33;
+    pub const SYSLOG = 34;
+    pub const WAKE_ALARM = 35;
+    pub const BLOCK_SUSPEND = 36;
+    pub const AUDIT_READ = 37;
+    pub const LAST_CAP = AUDIT_READ;
+
+    pub fn valid(x: u8) bool {
+        return x >= 0 and x <= LAST_CAP;
+    }
+
+    pub fn TO_MASK(cap: u8) u32 {
+        return @as(u32, 1) << @intCast(u5, cap & 31);
+    }
+
+    pub fn TO_INDEX(cap: u8) u8 {
+        return cap >> 5;
+    }
+};
+
+pub const cap_t = extern struct {
+    hdrp: *cap_user_header_t,
+    datap: *cap_user_data_t,
+};
+
+pub const cap_user_header_t = extern struct {
+    version: u32,
+    pid: usize,
+};
+
+pub const cap_user_data_t = extern struct {
+    effective: u32,
+    permitted: u32,
+    inheritable: u32,
+};
+
+pub const inotify_event = extern struct {
+    wd: i32,
+    mask: u32,
+    cookie: u32,
+    len: u32,
+    //name: [?]u8,
+};
+
+pub const dirent64 = extern struct {
+    d_ino: u64,
+    d_off: u64,
+    d_reclen: u16,
+    d_type: u8,
+    d_name: u8, // field address is the address of first byte of name https://github.com/ziglang/zig/issues/173
+
+    pub fn reclen(self: dirent64) u16 {
+        return self.d_reclen;
+    }
+};
+
+pub const dl_phdr_info = extern struct {
+    dlpi_addr: usize,
+    dlpi_name: ?[*:0]const u8,
+    dlpi_phdr: [*]std.elf.Phdr,
+    dlpi_phnum: u16,
+};
+
+pub const CPU_SETSIZE = 128;
+pub const cpu_set_t = [CPU_SETSIZE / @sizeOf(usize)]usize;
+pub const cpu_count_t = std.meta.Int(.unsigned, std.math.log2(CPU_SETSIZE * 8));
+
+pub fn CPU_COUNT(set: cpu_set_t) cpu_count_t {
+    var sum: cpu_count_t = 0;
+    for (set) |x| {
+        sum += @popCount(usize, x);
+    }
+    return sum;
 }
+
+pub const MINSIGSTKSZ = switch (native_arch) {
+    .i386, .x86_64, .arm, .mipsel => 2048,
+    .aarch64 => 5120,
+    else => @compileError("MINSIGSTKSZ not defined for this architecture"),
+};
+pub const SIGSTKSZ = switch (native_arch) {
+    .i386, .x86_64, .arm, .mipsel => 8192,
+    .aarch64 => 16384,
+    else => @compileError("SIGSTKSZ not defined for this architecture"),
+};
+
+pub const SS_ONSTACK = 1;
+pub const SS_DISABLE = 2;
+pub const SS_AUTODISARM = 1 << 31;
+
+pub const stack_t = if (is_mips)
+    // IRIX compatible stack_t
+    extern struct {
+        ss_sp: [*]u8,
+        ss_size: usize,
+        ss_flags: i32,
+    }
+else
+    extern struct {
+        ss_sp: [*]u8,
+        ss_flags: i32,
+        ss_size: usize,
+    };
+
+pub const sigval = extern union {
+    int: i32,
+    ptr: *c_void,
+};
+
+const siginfo_fields_union = extern union {
+    pad: [128 - 2 * @sizeOf(c_int) - @sizeOf(c_long)]u8,
+    common: extern struct {
+        first: extern union {
+            piduid: extern struct {
+                pid: pid_t,
+                uid: uid_t,
+            },
+            timer: extern struct {
+                timerid: i32,
+                overrun: i32,
+            },
+        },
+        second: extern union {
+            value: sigval,
+            sigchld: extern struct {
+                status: i32,
+                utime: clock_t,
+                stime: clock_t,
+            },
+        },
+    },
+    sigfault: extern struct {
+        addr: *c_void,
+        addr_lsb: i16,
+        first: extern union {
+            addr_bnd: extern struct {
+                lower: *c_void,
+                upper: *c_void,
+            },
+            pkey: u32,
+        },
+    },
+    sigpoll: extern struct {
+        band: isize,
+        fd: i32,
+    },
+    sigsys: extern struct {
+        call_addr: *c_void,
+        syscall: i32,
+        native_arch: u32,
+    },
+};
+
+pub const siginfo_t = if (is_mips)
+    extern struct {
+        signo: i32,
+        code: i32,
+        errno: i32,
+        fields: siginfo_fields_union,
+    }
+else
+    extern struct {
+        signo: i32,
+        errno: i32,
+        code: i32,
+        fields: siginfo_fields_union,
+    };
+
+pub const io_uring_params = extern struct {
+    sq_entries: u32,
+    cq_entries: u32,
+    flags: u32,
+    sq_thread_cpu: u32,
+    sq_thread_idle: u32,
+    features: u32,
+    wq_fd: u32,
+    resv: [3]u32,
+    sq_off: io_sqring_offsets,
+    cq_off: io_cqring_offsets,
+};
+
+// io_uring_params.features flags
+
+pub const IORING_FEAT_SINGLE_MMAP = 1 << 0;
+pub const IORING_FEAT_NODROP = 1 << 1;
+pub const IORING_FEAT_SUBMIT_STABLE = 1 << 2;
+pub const IORING_FEAT_RW_CUR_POS = 1 << 3;
+pub const IORING_FEAT_CUR_PERSONALITY = 1 << 4;
+pub const IORING_FEAT_FAST_POLL = 1 << 5;
+pub const IORING_FEAT_POLL_32BITS = 1 << 6;
+
+// io_uring_params.flags
+
+/// io_context is polled
+pub const IORING_SETUP_IOPOLL = 1 << 0;
+
+/// SQ poll thread
+pub const IORING_SETUP_SQPOLL = 1 << 1;
+
+/// sq_thread_cpu is valid
+pub const IORING_SETUP_SQ_AFF = 1 << 2;
+
+/// app defines CQ size
+pub const IORING_SETUP_CQSIZE = 1 << 3;
+
+/// clamp SQ/CQ ring sizes
+pub const IORING_SETUP_CLAMP = 1 << 4;
+
+/// attach to existing wq
+pub const IORING_SETUP_ATTACH_WQ = 1 << 5;
+
+/// start with ring disabled
+pub const IORING_SETUP_R_DISABLED = 1 << 6;
+
+pub const io_sqring_offsets = extern struct {
+    /// offset of ring head
+    head: u32,
+
+    /// offset of ring tail
+    tail: u32,
+
+    /// ring mask value
+    ring_mask: u32,
+
+    /// entries in ring
+    ring_entries: u32,
+
+    /// ring flags
+    flags: u32,
+
+    /// number of sqes not submitted
+    dropped: u32,
+
+    /// sqe index array
+    array: u32,
+
+    resv1: u32,
+    resv2: u64,
+};
+
+// io_sqring_offsets.flags
+
+/// needs io_uring_enter wakeup
+pub const IORING_SQ_NEED_WAKEUP = 1 << 0;
+
+/// kernel has cqes waiting beyond the cq ring
+pub const IORING_SQ_CQ_OVERFLOW = 1 << 1;
+
+pub const io_cqring_offsets = extern struct {
+    head: u32,
+    tail: u32,
+    ring_mask: u32,
+    ring_entries: u32,
+    overflow: u32,
+    cqes: u32,
+    resv: [2]u64,
+};
+
+pub const io_uring_sqe = extern struct {
+    opcode: IORING_OP,
+    flags: u8,
+    ioprio: u16,
+    fd: i32,
+    off: u64,
+    addr: u64,
+    len: u32,
+    rw_flags: u32,
+    user_data: u64,
+    buf_index: u16,
+    personality: u16,
+    splice_fd_in: i32,
+    __pad2: [2]u64,
+};
+
+pub const IOSQE_BIT = enum(u8) {
+    FIXED_FILE,
+    IO_DRAIN,
+    IO_LINK,
+    IO_HARDLINK,
+    ASYNC,
+    BUFFER_SELECT,
+
+    _,
+};
+
+// io_uring_sqe.flags
+
+/// use fixed fileset
+pub const IOSQE_FIXED_FILE = 1 << @enumToInt(IOSQE_BIT.FIXED_FILE);
+
+/// issue after inflight IO
+pub const IOSQE_IO_DRAIN = 1 << @enumToInt(IOSQE_BIT.IO_DRAIN);
+
+/// links next sqe
+pub const IOSQE_IO_LINK = 1 << @enumToInt(IOSQE_BIT.IO_LINK);
+
+/// like LINK, but stronger
+pub const IOSQE_IO_HARDLINK = 1 << @enumToInt(IOSQE_BIT.IO_HARDLINK);
+
+/// always go async
+pub const IOSQE_ASYNC = 1 << @enumToInt(IOSQE_BIT.ASYNC);
+
+/// select buffer from buf_group
+pub const IOSQE_BUFFER_SELECT = 1 << @enumToInt(IOSQE_BIT.BUFFER_SELECT);
+
+pub const IORING_OP = enum(u8) {
+    NOP,
+    READV,
+    WRITEV,
+    FSYNC,
+    READ_FIXED,
+    WRITE_FIXED,
+    POLL_ADD,
+    POLL_REMOVE,
+    SYNC_FILE_RANGE,
+    SENDMSG,
+    RECVMSG,
+    TIMEOUT,
+    TIMEOUT_REMOVE,
+    ACCEPT,
+    ASYNC_CANCEL,
+    LINK_TIMEOUT,
+    CONNECT,
+    FALLOCATE,
+    OPENAT,
+    CLOSE,
+    FILES_UPDATE,
+    STATX,
+    READ,
+    WRITE,
+    FADVISE,
+    MADVISE,
+    SEND,
+    RECV,
+    OPENAT2,
+    EPOLL_CTL,
+    SPLICE,
+    PROVIDE_BUFFERS,
+    REMOVE_BUFFERS,
+    TEE,
+
+    _,
+};
+
+// io_uring_sqe.fsync_flags
+pub const IORING_FSYNC_DATASYNC = 1 << 0;
+
+// io_uring_sqe.timeout_flags
+pub const IORING_TIMEOUT_ABS = 1 << 0;
+
+// IO completion data structure (Completion Queue Entry)
+pub const io_uring_cqe = extern struct {
+    /// io_uring_sqe.data submission passed back
+    user_data: u64,
+
+    /// result code for this event
+    res: i32,
+    flags: u32,
+
+    pub fn err(self: io_uring_cqe) E {
+        if (self.res > -4096 and self.res < 0) {
+            return @intToEnum(E, -self.res);
+        }
+        return .SUCCESS;
+    }
+};
+
+// io_uring_cqe.flags
+
+/// If set, the upper 16 bits are the buffer ID
+pub const IORING_CQE_F_BUFFER = 1 << 0;
+
+pub const IORING_OFF_SQ_RING = 0;
+pub const IORING_OFF_CQ_RING = 0x8000000;
+pub const IORING_OFF_SQES = 0x10000000;
+
+// io_uring_enter flags
+pub const IORING_ENTER_GETEVENTS = 1 << 0;
+pub const IORING_ENTER_SQ_WAKEUP = 1 << 1;
+
+// io_uring_register opcodes and arguments
+pub const IORING_REGISTER = enum(u8) {
+    REGISTER_BUFFERS,
+    UNREGISTER_BUFFERS,
+    REGISTER_FILES,
+    UNREGISTER_FILES,
+    REGISTER_EVENTFD,
+    UNREGISTER_EVENTFD,
+    REGISTER_FILES_UPDATE,
+    REGISTER_EVENTFD_ASYNC,
+    REGISTER_PROBE,
+    REGISTER_PERSONALITY,
+    UNREGISTER_PERSONALITY,
+    REGISTER_RESTRICTIONS,
+    REGISTER_ENABLE_RINGS,
+
+    _,
+};
+
+pub const io_uring_files_update = extern struct {
+    offset: u32,
+    resv: u32,
+    fds: u64,
+};
+
+pub const IO_URING_OP_SUPPORTED = 1 << 0;
+
+pub const io_uring_probe_op = extern struct {
+    op: IORING_OP,
+
+    resv: u8,
+
+    /// IO_URING_OP_* flags
+    flags: u16,
+
+    resv2: u32,
+};
+
+pub const io_uring_probe = extern struct {
+    /// last opcode supported
+    last_op: IORING_OP,
+
+    /// Number of io_uring_probe_op following
+    ops_len: u8,
+
+    resv: u16,
+    resv2: u32[3],
+
+    // Followed by up to `ops_len` io_uring_probe_op structures
+};
+
+pub const io_uring_restriction = extern struct {
+    opcode: u16,
+    arg: extern union {
+        /// IORING_RESTRICTION_REGISTER_OP
+        register_op: IORING_REGISTER,
+
+        /// IORING_RESTRICTION_SQE_OP
+        sqe_op: IORING_OP,
+
+        /// IORING_RESTRICTION_SQE_FLAGS_*
+        sqe_flags: u8,
+    },
+    resv: u8,
+    resv2: u32[3],
+};
+
+/// io_uring_restriction->opcode values
+pub const IORING_RESTRICTION = enum(u8) {
+    /// Allow an io_uring_register(2) opcode
+    REGISTER_OP = 0,
+
+    /// Allow an sqe opcode
+    SQE_OP = 1,
+
+    /// Allow sqe flags
+    SQE_FLAGS_ALLOWED = 2,
+
+    /// Require sqe flags (these flags must be set on each submission)
+    SQE_FLAGS_REQUIRED = 3,
+
+    _,
+};
+
+pub const utsname = extern struct {
+    sysname: [64:0]u8,
+    nodename: [64:0]u8,
+    release: [64:0]u8,
+    version: [64:0]u8,
+    machine: [64:0]u8,
+    domainname: [64:0]u8,
+};
+pub const HOST_NAME_MAX = 64;
+
+pub const STATX_TYPE = 0x0001;
+pub const STATX_MODE = 0x0002;
+pub const STATX_NLINK = 0x0004;
+pub const STATX_UID = 0x0008;
+pub const STATX_GID = 0x0010;
+pub const STATX_ATIME = 0x0020;
+pub const STATX_MTIME = 0x0040;
+pub const STATX_CTIME = 0x0080;
+pub const STATX_INO = 0x0100;
+pub const STATX_SIZE = 0x0200;
+pub const STATX_BLOCKS = 0x0400;
+pub const STATX_BASIC_STATS = 0x07ff;
+
+pub const STATX_BTIME = 0x0800;
+
+pub const STATX_ATTR_COMPRESSED = 0x0004;
+pub const STATX_ATTR_IMMUTABLE = 0x0010;
+pub const STATX_ATTR_APPEND = 0x0020;
+pub const STATX_ATTR_NODUMP = 0x0040;
+pub const STATX_ATTR_ENCRYPTED = 0x0800;
+pub const STATX_ATTR_AUTOMOUNT = 0x1000;
+
+pub const statx_timestamp = extern struct {
+    tv_sec: i64,
+    tv_nsec: u32,
+    __pad1: u32,
+};
+
+/// Renamed to `Statx` to not conflict with the `statx` function.
+pub const Statx = extern struct {
+    /// Mask of bits indicating filled fields
+    mask: u32,
+
+    /// Block size for filesystem I/O
+    blksize: u32,
+
+    /// Extra file attribute indicators
+    attributes: u64,
+
+    /// Number of hard links
+    nlink: u32,
+
+    /// User ID of owner
+    uid: uid_t,
+
+    /// Group ID of owner
+    gid: gid_t,
+
+    /// File type and mode
+    mode: u16,
+    __pad1: u16,
+
+    /// Inode number
+    ino: u64,
+
+    /// Total size in bytes
+    size: u64,
+
+    /// Number of 512B blocks allocated
+    blocks: u64,
+
+    /// Mask to show what's supported in `attributes`.
+    attributes_mask: u64,
+
+    /// Last access file timestamp
+    atime: statx_timestamp,
+
+    /// Creation file timestamp
+    btime: statx_timestamp,
+
+    /// Last status change file timestamp
+    ctime: statx_timestamp,
+
+    /// Last modification file timestamp
+    mtime: statx_timestamp,
+
+    /// Major ID, if this file represents a device.
+    rdev_major: u32,
+
+    /// Minor ID, if this file represents a device.
+    rdev_minor: u32,
+
+    /// Major ID of the device containing the filesystem where this file resides.
+    dev_major: u32,
+
+    /// Minor ID of the device containing the filesystem where this file resides.
+    dev_minor: u32,
+
+    __pad2: [14]u64,
+};
+
+pub const addrinfo = extern struct {
+    flags: i32,
+    family: i32,
+    socktype: i32,
+    protocol: i32,
+    addrlen: socklen_t,
+    addr: ?*sockaddr,
+    canonname: ?[*:0]u8,
+    next: ?*addrinfo,
+};
+
+pub const IPPORT_RESERVED = 1024;
+
+pub const IPPROTO_IP = 0;
+pub const IPPROTO_HOPOPTS = 0;
+pub const IPPROTO_ICMP = 1;
+pub const IPPROTO_IGMP = 2;
+pub const IPPROTO_IPIP = 4;
+pub const IPPROTO_TCP = 6;
+pub const IPPROTO_EGP = 8;
+pub const IPPROTO_PUP = 12;
+pub const IPPROTO_UDP = 17;
+pub const IPPROTO_IDP = 22;
+pub const IPPROTO_TP = 29;
+pub const IPPROTO_DCCP = 33;
+pub const IPPROTO_IPV6 = 41;
+pub const IPPROTO_ROUTING = 43;
+pub const IPPROTO_FRAGMENT = 44;
+pub const IPPROTO_RSVP = 46;
+pub const IPPROTO_GRE = 47;
+pub const IPPROTO_ESP = 50;
+pub const IPPROTO_AH = 51;
+pub const IPPROTO_ICMPV6 = 58;
+pub const IPPROTO_NONE = 59;
+pub const IPPROTO_DSTOPTS = 60;
+pub const IPPROTO_MTP = 92;
+pub const IPPROTO_BEETPH = 94;
+pub const IPPROTO_ENCAP = 98;
+pub const IPPROTO_PIM = 103;
+pub const IPPROTO_COMP = 108;
+pub const IPPROTO_SCTP = 132;
+pub const IPPROTO_MH = 135;
+pub const IPPROTO_UDPLITE = 136;
+pub const IPPROTO_MPLS = 137;
+pub const IPPROTO_RAW = 255;
+pub const IPPROTO_MAX = 256;
+
+pub const RR_A = 1;
+pub const RR_CNAME = 5;
+pub const RR_AAAA = 28;
+
+/// Turn off Nagle's algorithm
+pub const TCP_NODELAY = 1;
+/// Limit MSS
+pub const TCP_MAXSEG = 2;
+/// Never send partially complete segments.
+pub const TCP_CORK = 3;
+/// Start keeplives after this period, in seconds
+pub const TCP_KEEPIDLE = 4;
+/// Interval between keepalives
+pub const TCP_KEEPINTVL = 5;
+/// Number of keepalives before death
+pub const TCP_KEEPCNT = 6;
+/// Number of SYN retransmits
+pub const TCP_SYNCNT = 7;
+/// Life time of orphaned FIN-WAIT-2 state
+pub const TCP_LINGER2 = 8;
+/// Wake up listener only when data arrive
+pub const TCP_DEFER_ACCEPT = 9;
+/// Bound advertised window
+pub const TCP_WINDOW_CLAMP = 10;
+/// Information about this connection.
+pub const TCP_INFO = 11;
+/// Block/reenable quick acks
+pub const TCP_QUICKACK = 12;
+/// Congestion control algorithm
+pub const TCP_CONGESTION = 13;
+/// TCP MD5 Signature (RFC2385)
+pub const TCP_MD5SIG = 14;
+/// Use linear timeouts for thin streams
+pub const TCP_THIN_LINEAR_TIMEOUTS = 16;
+/// Fast retrans. after 1 dupack
+pub const TCP_THIN_DUPACK = 17;
+/// How long for loss retry before timeout
+pub const TCP_USER_TIMEOUT = 18;
+/// TCP sock is under repair right now
+pub const TCP_REPAIR = 19;
+pub const TCP_REPAIR_QUEUE = 20;
+pub const TCP_QUEUE_SEQ = 21;
+pub const TCP_REPAIR_OPTIONS = 22;
+/// Enable FastOpen on listeners
+pub const TCP_FASTOPEN = 23;
+pub const TCP_TIMESTAMP = 24;
+/// limit number of unsent bytes in write queue
+pub const TCP_NOTSENT_LOWAT = 25;
+/// Get Congestion Control (optional) info
+pub const TCP_CC_INFO = 26;
+/// Record SYN headers for new connections
+pub const TCP_SAVE_SYN = 27;
+/// Get SYN headers recorded for connection
+pub const TCP_SAVED_SYN = 28;
+/// Get/set window parameters
+pub const TCP_REPAIR_WINDOW = 29;
+/// Attempt FastOpen with connect
+pub const TCP_FASTOPEN_CONNECT = 30;
+/// Attach a ULP to a TCP connection
+pub const TCP_ULP = 31;
+/// TCP MD5 Signature with extensions
+pub const TCP_MD5SIG_EXT = 32;
+/// Set the key for Fast Open (cookie)
+pub const TCP_FASTOPEN_KEY = 33;
+/// Enable TFO without a TFO cookie
+pub const TCP_FASTOPEN_NO_COOKIE = 34;
+pub const TCP_ZEROCOPY_RECEIVE = 35;
+/// Notify bytes available to read as a cmsg on read
+pub const TCP_INQ = 36;
+pub const TCP_CM_INQ = TCP_INQ;
+/// delay outgoing packets by XX usec
+pub const TCP_TX_DELAY = 37;
+
+pub const TCP_REPAIR_ON = 1;
+pub const TCP_REPAIR_OFF = 0;
+/// Turn off without window probes
+pub const TCP_REPAIR_OFF_NO_WP = -1;
+
+pub const tcp_repair_opt = extern struct {
+    opt_code: u32,
+    opt_val: u32,
+};
+
+pub const tcp_repair_window = extern struct {
+    snd_wl1: u32,
+    snd_wnd: u32,
+    max_window: u32,
+    rcv_wnd: u32,
+    rcv_wup: u32,
+};
+
+pub const TcpRepairOption = enum {
+    TCP_NO_QUEUE,
+    TCP_RECV_QUEUE,
+    TCP_SEND_QUEUE,
+    TCP_QUEUES_NR,
+};
+
+/// why fastopen failed from client perspective
+pub const tcp_fastopen_client_fail = enum {
+    /// catch-all
+    TFO_STATUS_UNSPEC,
+    /// if not in TFO_CLIENT_NO_COOKIE mode
+    TFO_COOKIE_UNAVAILABLE,
+    /// SYN-ACK did not ack SYN data
+    TFO_DATA_NOT_ACKED,
+    /// SYN-ACK did not ack SYN data after timeout
+    TFO_SYN_RETRANSMITTED,
+};
+
+/// for TCP_INFO socket option
+pub const TCPI_OPT_TIMESTAMPS = 1;
+pub const TCPI_OPT_SACK = 2;
+pub const TCPI_OPT_WSCALE = 4;
+/// ECN was negociated at TCP session init
+pub const TCPI_OPT_ECN = 8;
+/// we received at least one packet with ECT
+pub const TCPI_OPT_ECN_SEEN = 16;
+/// SYN-ACK acked data in SYN sent or rcvd
+pub const TCPI_OPT_SYN_DATA = 32;
+
+pub const nfds_t = usize;
+pub const pollfd = extern struct {
+    fd: fd_t,
+    events: i16,
+    revents: i16,
+};
+
+pub const POLLIN = 0x001;
+pub const POLLPRI = 0x002;
+pub const POLLOUT = 0x004;
+pub const POLLERR = 0x008;
+pub const POLLHUP = 0x010;
+pub const POLLNVAL = 0x020;
+pub const POLLRDNORM = 0x040;
+pub const POLLRDBAND = 0x080;
+
+pub const MFD_CLOEXEC = 0x0001;
+pub const MFD_ALLOW_SEALING = 0x0002;
+pub const MFD_HUGETLB = 0x0004;
+pub const MFD_ALL_FLAGS = MFD_CLOEXEC | MFD_ALLOW_SEALING | MFD_HUGETLB;
+
+pub const HUGETLB_FLAG_ENCODE_SHIFT = 26;
+pub const HUGETLB_FLAG_ENCODE_MASK = 0x3f;
+pub const HUGETLB_FLAG_ENCODE_64KB = 16 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_512KB = 19 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_1MB = 20 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_2MB = 21 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_8MB = 23 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_16MB = 24 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_32MB = 25 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_256MB = 28 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_512MB = 29 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_1GB = 30 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_2GB = 31 << HUGETLB_FLAG_ENCODE_SHIFT;
+pub const HUGETLB_FLAG_ENCODE_16GB = 34 << HUGETLB_FLAG_ENCODE_SHIFT;
+
+pub const MFD_HUGE_SHIFT = HUGETLB_FLAG_ENCODE_SHIFT;
+pub const MFD_HUGE_MASK = HUGETLB_FLAG_ENCODE_MASK;
+pub const MFD_HUGE_64KB = HUGETLB_FLAG_ENCODE_64KB;
+pub const MFD_HUGE_512KB = HUGETLB_FLAG_ENCODE_512KB;
+pub const MFD_HUGE_1MB = HUGETLB_FLAG_ENCODE_1MB;
+pub const MFD_HUGE_2MB = HUGETLB_FLAG_ENCODE_2MB;
+pub const MFD_HUGE_8MB = HUGETLB_FLAG_ENCODE_8MB;
+pub const MFD_HUGE_16MB = HUGETLB_FLAG_ENCODE_16MB;
+pub const MFD_HUGE_32MB = HUGETLB_FLAG_ENCODE_32MB;
+pub const MFD_HUGE_256MB = HUGETLB_FLAG_ENCODE_256MB;
+pub const MFD_HUGE_512MB = HUGETLB_FLAG_ENCODE_512MB;
+pub const MFD_HUGE_1GB = HUGETLB_FLAG_ENCODE_1GB;
+pub const MFD_HUGE_2GB = HUGETLB_FLAG_ENCODE_2GB;
+pub const MFD_HUGE_16GB = HUGETLB_FLAG_ENCODE_16GB;
+
+pub const RUSAGE_SELF = 0;
+pub const RUSAGE_CHILDREN = -1;
+pub const RUSAGE_THREAD = 1;
+
+pub const rusage = extern struct {
+    utime: timeval,
+    stime: timeval,
+    maxrss: isize,
+    ixrss: isize,
+    idrss: isize,
+    isrss: isize,
+    minflt: isize,
+    majflt: isize,
+    nswap: isize,
+    inblock: isize,
+    oublock: isize,
+    msgsnd: isize,
+    msgrcv: isize,
+    nsignals: isize,
+    nvcsw: isize,
+    nivcsw: isize,
+    __reserved: [16]isize = [1]isize{0} ** 16,
+};
+
+pub const cc_t = u8;
+pub const speed_t = u32;
+pub const tcflag_t = u32;
+
+pub const NCCS = 32;
+
+pub const B0 = 0o0000000;
+pub const B50 = 0o0000001;
+pub const B75 = 0o0000002;
+pub const B110 = 0o0000003;
+pub const B134 = 0o0000004;
+pub const B150 = 0o0000005;
+pub const B200 = 0o0000006;
+pub const B300 = 0o0000007;
+pub const B600 = 0o0000010;
+pub const B1200 = 0o0000011;
+pub const B1800 = 0o0000012;
+pub const B2400 = 0o0000013;
+pub const B4800 = 0o0000014;
+pub const B9600 = 0o0000015;
+pub const B19200 = 0o0000016;
+pub const B38400 = 0o0000017;
+pub const BOTHER = 0o0010000;
+pub const B57600 = 0o0010001;
+pub const B115200 = 0o0010002;
+pub const B230400 = 0o0010003;
+pub const B460800 = 0o0010004;
+pub const B500000 = 0o0010005;
+pub const B576000 = 0o0010006;
+pub const B921600 = 0o0010007;
+pub const B1000000 = 0o0010010;
+pub const B1152000 = 0o0010011;
+pub const B1500000 = 0o0010012;
+pub const B2000000 = 0o0010013;
+pub const B2500000 = 0o0010014;
+pub const B3000000 = 0o0010015;
+pub const B3500000 = 0o0010016;
+pub const B4000000 = 0o0010017;
+
+pub const V = switch (native_arch) {
+    .powerpc, .powerpc64, .powerpc64le => struct {
+        pub const INTR = 0;
+        pub const QUIT = 1;
+        pub const ERASE = 2;
+        pub const KILL = 3;
+        pub const EOF = 4;
+        pub const MIN = 5;
+        pub const EOL = 6;
+        pub const TIME = 7;
+        pub const EOL2 = 8;
+        pub const SWTC = 9;
+        pub const WERASE = 10;
+        pub const REPRINT = 11;
+        pub const SUSP = 12;
+        pub const START = 13;
+        pub const STOP = 14;
+        pub const LNEXT = 15;
+        pub const DISCARD = 16;
+    },
+    .sparc, .sparcv9 => struct {
+        pub const INTR = 0;
+        pub const QUIT = 1;
+        pub const ERASE = 2;
+        pub const KILL = 3;
+        pub const EOF = 4;
+        pub const EOL = 5;
+        pub const EOL2 = 6;
+        pub const SWTC = 7;
+        pub const START = 8;
+        pub const STOP = 9;
+        pub const SUSP = 10;
+        pub const DSUSP = 11;
+        pub const REPRINT = 12;
+        pub const DISCARD = 13;
+        pub const WERASE = 14;
+        pub const LNEXT = 15;
+        pub const MIN = VEOF;
+        pub const TIME = VEOL;
+    },
+    .mips, .mipsel, .mips64, .mips64el => struct {
+        pub const INTR = 0;
+        pub const QUIT = 1;
+        pub const ERASE = 2;
+        pub const KILL = 3;
+        pub const MIN = 4;
+        pub const TIME = 5;
+        pub const EOL2 = 6;
+        pub const SWTC = 7;
+        pub const SWTCH = 7;
+        pub const START = 8;
+        pub const STOP = 9;
+        pub const SUSP = 10;
+        pub const REPRINT = 12;
+        pub const DISCARD = 13;
+        pub const WERASE = 14;
+        pub const LNEXT = 15;
+        pub const EOF = 16;
+        pub const EOL = 17;
+    },
+    else => struct {
+        pub const INTR = 0;
+        pub const QUIT = 1;
+        pub const ERASE = 2;
+        pub const KILL = 3;
+        pub const EOF = 4;
+        pub const TIME = 5;
+        pub const MIN = 6;
+        pub const SWTC = 7;
+        pub const START = 8;
+        pub const STOP = 9;
+        pub const SUSP = 10;
+        pub const EOL = 11;
+        pub const REPRINT = 12;
+        pub const DISCARD = 13;
+        pub const WERASE = 14;
+        pub const LNEXT = 15;
+        pub const EOL2 = 16;
+    },
+};
+
+pub const IGNBRK = 1;
+pub const BRKINT = 2;
+pub const IGNPAR = 4;
+pub const PARMRK = 8;
+pub const INPCK = 16;
+pub const ISTRIP = 32;
+pub const INLCR = 64;
+pub const IGNCR = 128;
+pub const ICRNL = 256;
+pub const IUCLC = 512;
+pub const IXON = 1024;
+pub const IXANY = 2048;
+pub const IXOFF = 4096;
+pub const IMAXBEL = 8192;
+pub const IUTF8 = 16384;
+
+pub const OPOST = 1;
+pub const OLCUC = 2;
+pub const ONLCR = 4;
+pub const OCRNL = 8;
+pub const ONOCR = 16;
+pub const ONLRET = 32;
+pub const OFILL = 64;
+pub const OFDEL = 128;
+pub const VTDLY = 16384;
+pub const VT0 = 0;
+pub const VT1 = 16384;
+
+pub const CSIZE = 48;
+pub const CS5 = 0;
+pub const CS6 = 16;
+pub const CS7 = 32;
+pub const CS8 = 48;
+pub const CSTOPB = 64;
+pub const CREAD = 128;
+pub const PARENB = 256;
+pub const PARODD = 512;
+pub const HUPCL = 1024;
+pub const CLOCAL = 2048;
+
+pub const ISIG = 1;
+pub const ICANON = 2;
+pub const ECHO = 8;
+pub const ECHOE = 16;
+pub const ECHOK = 32;
+pub const ECHONL = 64;
+pub const NOFLSH = 128;
+pub const TOSTOP = 256;
+pub const IEXTEN = 32768;
+
+pub const TCSA = enum(c_uint) {
+    NOW,
+    DRAIN,
+    FLUSH,
+    _,
+};
+
+pub const termios = extern struct {
+    iflag: tcflag_t,
+    oflag: tcflag_t,
+    cflag: tcflag_t,
+    lflag: tcflag_t,
+    line: cc_t,
+    cc: [NCCS]cc_t,
+    ispeed: speed_t,
+    ospeed: speed_t,
+};
+
+pub const SIOCGIFINDEX = 0x8933;
+pub const IFNAMESIZE = 16;
+
+pub const ifmap = extern struct {
+    mem_start: u32,
+    mem_end: u32,
+    base_addr: u16,
+    irq: u8,
+    dma: u8,
+    port: u8,
+};
+
+pub const ifreq = extern struct {
+    ifrn: extern union {
+        name: [IFNAMESIZE]u8,
+    },
+    ifru: extern union {
+        addr: sockaddr,
+        dstaddr: sockaddr,
+        broadaddr: sockaddr,
+        netmask: sockaddr,
+        hwaddr: sockaddr,
+        flags: i16,
+        ivalue: i32,
+        mtu: i32,
+        map: ifmap,
+        slave: [IFNAMESIZE - 1:0]u8,
+        newname: [IFNAMESIZE - 1:0]u8,
+        data: ?[*]u8,
+    },
+};
+
+// doc comments copied from musl
+pub const rlimit_resource = enum(c_int) {
+    /// Per-process CPU limit, in seconds.
+    CPU,
+
+    /// Largest file that can be created, in bytes.
+    FSIZE,
+
+    /// Maximum size of data segment, in bytes.
+    DATA,
+
+    /// Maximum size of stack segment, in bytes.
+    STACK,
+
+    /// Largest core file that can be created, in bytes.
+    CORE,
+
+    /// Largest resident set size, in bytes.
+    /// This affects swapping; processes that are exceeding their
+    /// resident set size will be more likely to have physical memory
+    /// taken from them.
+    RSS,
+
+    /// Number of processes.
+    NPROC,
+
+    /// Number of open files.
+    NOFILE,
+
+    /// Locked-in-memory address space.
+    MEMLOCK,
+
+    /// Address space limit.
+    AS,
+
+    /// Maximum number of file locks.
+    LOCKS,
+
+    /// Maximum number of pending signals.
+    SIGPENDING,
+
+    /// Maximum bytes in POSIX message queues.
+    MSGQUEUE,
+
+    /// Maximum nice priority allowed to raise to.
+    /// Nice levels 19 .. -20 correspond to 0 .. 39
+    /// values of this resource limit.
+    NICE,
+
+    /// Maximum realtime priority allowed for non-priviledged
+    /// processes.
+    RTPRIO,
+
+    /// Maximum CPU time in µs that a process scheduled under a real-time
+    /// scheduling policy may consume without making a blocking system
+    /// call before being forcibly descheduled.
+    RTTIME,
+
+    _,
+};
+
+pub const rlim_t = u64;
+
+/// No limit
+pub const RLIM_INFINITY = ~@as(rlim_t, 0);
+
+pub const RLIM_SAVED_MAX = RLIM_INFINITY;
+pub const RLIM_SAVED_CUR = RLIM_INFINITY;
+
+pub const rlimit = extern struct {
+    /// Soft limit
+    cur: rlim_t,
+    /// Hard limit
+    max: rlim_t,
+};
+
+pub const MADV = struct {
+    pub const NORMAL = 0;
+    pub const RANDOM = 1;
+    pub const SEQUENTIAL = 2;
+    pub const WILLNEED = 3;
+    pub const DONTNEED = 4;
+    pub const FREE = 8;
+    pub const REMOVE = 9;
+    pub const DONTFORK = 10;
+    pub const DOFORK = 11;
+    pub const MERGEABLE = 12;
+    pub const UNMERGEABLE = 13;
+    pub const HUGEPAGE = 14;
+    pub const NOHUGEPAGE = 15;
+    pub const DONTDUMP = 16;
+    pub const DODUMP = 17;
+    pub const WIPEONFORK = 18;
+    pub const KEEPONFORK = 19;
+    pub const COLD = 20;
+    pub const PAGEOUT = 21;
+    pub const HWPOISON = 100;
+    pub const SOFT_OFFLINE = 101;
+};
+
+pub const POSIX_FADV = switch (native_arch) {
+    .s390x => if (@typeInfo(usize).Int.bits == 64) struct {
+        pub const NORMAL = 0;
+        pub const RANDOM = 1;
+        pub const SEQUENTIAL = 2;
+        pub const WILLNEED = 3;
+        pub const DONTNEED = 6;
+        pub const NOREUSE = 7;
+    } else struct {
+        pub const NORMAL = 0;
+        pub const RANDOM = 1;
+        pub const SEQUENTIAL = 2;
+        pub const WILLNEED = 3;
+        pub const DONTNEED = 4;
+        pub const NOREUSE = 5;
+    },
+    else => struct {
+        pub const NORMAL = 0;
+        pub const RANDOM = 1;
+        pub const SEQUENTIAL = 2;
+        pub const WILLNEED = 3;
+        pub const DONTNEED = 4;
+        pub const NOREUSE = 5;
+    },
+};
+
+pub const __kernel_timespec = extern struct {
+    tv_sec: i64,
+    tv_nsec: i64,
+};
+
+pub const XDP = struct {
+    pub const SHARED_UMEM = (1 << 0);
+    pub const COPY = (1 << 1);
+    pub const ZEROCOPY = (1 << 2);
+    pub const UMEM_UNALIGNED_CHUNK_FLAG = (1 << 0);
+    pub const USE_NEED_WAKEUP = (1 << 3);
+
+    pub const MMAP_OFFSETS = 1;
+    pub const RX_RING = 2;
+    pub const TX_RING = 3;
+    pub const UMEM_REG = 4;
+    pub const UMEM_FILL_RING = 5;
+    pub const UMEM_COMPLETION_RING = 6;
+    pub const STATISTICS = 7;
+    pub const OPTIONS = 8;
+
+    pub const OPTIONS_ZEROCOPY = (1 << 0);
+
+    pub const PGOFF_RX_RING = 0;
+    pub const PGOFF_TX_RING = 0x80000000;
+    pub const UMEM_PGOFF_FILL_RING = 0x100000000;
+    pub const UMEM_PGOFF_COMPLETION_RING = 0x180000000;
+};
+
+pub const sockaddr_xdp = extern struct {
+    family: u16 = AF_XDP,
+    flags: u16,
+    ifindex: u32,
+    queue_id: u32,
+    shared_umem_fd: u32,
+};
+
+pub const xdp_ring_offset = extern struct {
+    producer: u64,
+    consumer: u64,
+    desc: u64,
+    flags: u64,
+};
+
+pub const xdp_mmap_offsets = extern struct {
+    rx: xdp_ring_offset,
+    tx: xdp_ring_offset,
+    fr: xdp_ring_offset,
+    cr: xdp_ring_offset,
+};
+
+pub const xdp_umem_reg = extern struct {
+    addr: u64,
+    len: u64,
+    chunk_size: u32,
+    headroom: u32,
+    flags: u32,
+};
+
+pub const xdp_statistics = extern struct {
+    rx_dropped: u64,
+    rx_invalid_descs: u64,
+    tx_invalid_descs: u64,
+    rx_ring_full: u64,
+    rx_fill_ring_empty_descs: u64,
+    tx_ring_empty_descs: u64,
+};
+
+pub const xdp_options = extern struct {
+    flags: u32,
+};
+
+pub const XSK_UNALIGNED_BUF_OFFSET_SHIFT = 48;
+pub const XSK_UNALIGNED_BUF_ADDR_MASK = (1 << XSK_UNALIGNED_BUF_OFFSET_SHIFT) - 1;
+
+pub const xdp_desc = extern struct {
+    addr: u64,
+    len: u32,
+    options: u32,
+};
+
+fn issecure_mask(comptime x: comptime_int) comptime_int {
+    return 1 << x;
+}
+
+pub const SECUREBITS_DEFAULT = 0x00000000;
+
+pub const SECURE_NOROOT = 0;
+pub const SECURE_NOROOT_LOCKED = 1;
+
+pub const SECBIT_NOROOT = issecure_mask(SECURE_NOROOT);
+pub const SECBIT_NOROOT_LOCKED = issecure_mask(SECURE_NOROOT_LOCKED);
+
+pub const SECURE_NO_SETUID_FIXUP = 2;
+pub const SECURE_NO_SETUID_FIXUP_LOCKED = 3;
+
+pub const SECBIT_NO_SETUID_FIXUP = issecure_mask(SECURE_NO_SETUID_FIXUP);
+pub const SECBIT_NO_SETUID_FIXUP_LOCKED = issecure_mask(SECURE_NO_SETUID_FIXUP_LOCKED);
+
+pub const SECURE_KEEP_CAPS = 4;
+pub const SECURE_KEEP_CAPS_LOCKED = 5;
+
+pub const SECBIT_KEEP_CAPS = issecure_mask(SECURE_KEEP_CAPS);
+pub const SECBIT_KEEP_CAPS_LOCKED = issecure_mask(SECURE_KEEP_CAPS_LOCKED);
+
+pub const SECURE_NO_CAP_AMBIENT_RAISE = 6;
+pub const SECURE_NO_CAP_AMBIENT_RAISE_LOCKED = 7;
+
+pub const SECBIT_NO_CAP_AMBIENT_RAISE = issecure_mask(SECURE_NO_CAP_AMBIENT_RAISE);
+pub const SECBIT_NO_CAP_AMBIENT_RAISE_LOCKED = issecure_mask(SECURE_NO_CAP_AMBIENT_RAISE_LOCKED);
+
+pub const SECURE_ALL_BITS = issecure_mask(SECURE_NOROOT) |
+    issecure_mask(SECURE_NO_SETUID_FIXUP) |
+    issecure_mask(SECURE_KEEP_CAPS) |
+    issecure_mask(SECURE_NO_CAP_AMBIENT_RAISE);
+pub const SECURE_ALL_LOCKS = SECURE_ALL_BITS << 1;
+
+pub const PR = enum(i32) {
+    SET_PDEATHSIG = 1,
+    GET_PDEATHSIG = 2,
+
+    GET_DUMPABLE = 3,
+    SET_DUMPABLE = 4,
+
+    GET_UNALIGN = 5,
+    SET_UNALIGN = 6,
+
+    GET_KEEPCAPS = 7,
+    SET_KEEPCAPS = 8,
+
+    GET_FPEMU = 9,
+    SET_FPEMU = 10,
+
+    GET_FPEXC = 11,
+    SET_FPEXC = 12,
+
+    GET_TIMING = 13,
+    SET_TIMING = 14,
+
+    SET_NAME = 15,
+    GET_NAME = 16,
+
+    GET_ENDIAN = 19,
+    SET_ENDIAN = 20,
+
+    GET_SECCOMP = 21,
+    SET_SECCOMP = 22,
+
+    CAPBSET_READ = 23,
+    CAPBSET_DROP = 24,
+
+    GET_TSC = 25,
+    SET_TSC = 26,
+
+    GET_SECUREBITS = 27,
+    SET_SECUREBITS = 28,
+
+    SET_TIMERSLACK = 29,
+    GET_TIMERSLACK = 30,
+
+    TASK_PERF_EVENTS_DISABLE = 31,
+    TASK_PERF_EVENTS_ENABLE = 32,
+
+    MCE_KILL = 33,
+
+    MCE_KILL_GET = 34,
+
+    SET_MM = 35,
+
+    SET_PTRACER = 0x59616d61,
+
+    SET_CHILD_SUBREAPER = 36,
+    GET_CHILD_SUBREAPER = 37,
+
+    SET_NO_NEW_PRIVS = 38,
+    GET_NO_NEW_PRIVS = 39,
+
+    GET_TID_ADDRESS = 40,
+
+    SET_THP_DISABLE = 41,
+    GET_THP_DISABLE = 42,
+
+    MPX_ENABLE_MANAGEMENT = 43,
+    MPX_DISABLE_MANAGEMENT = 44,
+
+    SET_FP_MODE = 45,
+    GET_FP_MODE = 46,
+
+    CAP_AMBIENT = 47,
+
+    SVE_SET_VL = 50,
+    SVE_GET_VL = 51,
+
+    GET_SPECULATION_CTRL = 52,
+    SET_SPECULATION_CTRL = 53,
+
+    _,
+
+    pub const UNALIGN_NOPRINT = 1;
+    pub const UNALIGN_SIGBUS = 2;
+
+    pub const FPEMU_NOPRINT = 1;
+    pub const FPEMU_SIGFPE = 2;
+
+    pub const FP_EXC_SW_ENABLE = 0x80;
+    pub const FP_EXC_DIV = 0x010000;
+    pub const FP_EXC_OVF = 0x020000;
+    pub const FP_EXC_UND = 0x040000;
+    pub const FP_EXC_RES = 0x080000;
+    pub const FP_EXC_INV = 0x100000;
+    pub const FP_EXC_DISABLED = 0;
+    pub const FP_EXC_NONRECOV = 1;
+    pub const FP_EXC_ASYNC = 2;
+    pub const FP_EXC_PRECISE = 3;
+
+    pub const TIMING_STATISTICAL = 0;
+    pub const TIMING_TIMESTAMP = 1;
+
+    pub const ENDIAN_BIG = 0;
+    pub const ENDIAN_LITTLE = 1;
+    pub const ENDIAN_PPC_LITTLE = 2;
+
+    pub const TSC_ENABLE = 1;
+    pub const TSC_SIGSEGV = 2;
+
+    pub const MCE_KILL_CLEAR = 0;
+    pub const MCE_KILL_SET = 1;
+
+    pub const MCE_KILL_LATE = 0;
+    pub const MCE_KILL_EARLY = 1;
+    pub const MCE_KILL_DEFAULT = 2;
+
+    pub const SET_MM_START_CODE = 1;
+    pub const SET_MM_END_CODE = 2;
+    pub const SET_MM_START_DATA = 3;
+    pub const SET_MM_END_DATA = 4;
+    pub const SET_MM_START_STACK = 5;
+    pub const SET_MM_START_BRK = 6;
+    pub const SET_MM_BRK = 7;
+    pub const SET_MM_ARG_START = 8;
+    pub const SET_MM_ARG_END = 9;
+    pub const SET_MM_ENV_START = 10;
+    pub const SET_MM_ENV_END = 11;
+    pub const SET_MM_AUXV = 12;
+    pub const SET_MM_EXE_FILE = 13;
+    pub const SET_MM_MAP = 14;
+    pub const SET_MM_MAP_SIZE = 15;
+
+    pub const SET_PTRACER_ANY = std.math.maxInt(c_ulong);
+
+    pub const FP_MODE_FR = 1 << 0;
+    pub const FP_MODE_FRE = 1 << 1;
+
+    pub const CAP_AMBIENT_IS_SET = 1;
+    pub const CAP_AMBIENT_RAISE = 2;
+    pub const CAP_AMBIENT_LOWER = 3;
+    pub const CAP_AMBIENT_CLEAR_ALL = 4;
+
+    pub const SVE_SET_VL_ONEXEC = 1 << 18;
+    pub const SVE_VL_LEN_MASK = 0xffff;
+    pub const SVE_VL_INHERIT = 1 << 17;
+
+    pub const SPEC_STORE_BYPASS = 0;
+    pub const SPEC_NOT_AFFECTED = 0;
+    pub const SPEC_PRCTL = 1 << 0;
+    pub const SPEC_ENABLE = 1 << 1;
+    pub const SPEC_DISABLE = 1 << 2;
+    pub const SPEC_FORCE_DISABLE = 1 << 3;
+};
+
+pub const prctl_mm_map = extern struct {
+    start_code: u64,
+    end_code: u64,
+    start_data: u64,
+    end_data: u64,
+    start_brk: u64,
+    brk: u64,
+    start_stack: u64,
+    arg_start: u64,
+    arg_end: u64,
+    env_start: u64,
+    env_end: u64,
+    auxv: *u64,
+    auxv_size: u32,
+    exe_fd: u32,
+};
+
+pub const NETLINK = struct {
+
+    /// Routing/device hook
+    pub const ROUTE = 0;
+
+    /// Unused number
+    pub const UNUSED = 1;
+
+    /// Reserved for user mode socket protocols
+    pub const USERSOCK = 2;
+
+    /// Unused number, formerly ip_queue
+    pub const FIREWALL = 3;
+
+    /// socket monitoring
+    pub const SOCK_DIAG = 4;
+
+    /// netfilter/iptables ULOG
+    pub const NFLOG = 5;
+
+    /// ipsec
+    pub const XFRM = 6;
+
+    /// SELinux event notifications
+    pub const SELINUX = 7;
+
+    /// Open-iSCSI
+    pub const ISCSI = 8;
+
+    /// auditing
+    pub const AUDIT = 9;
+
+    pub const FIB_LOOKUP = 10;
+
+    pub const CONNECTOR = 11;
+
+    /// netfilter subsystem
+    pub const NETFILTER = 12;
+
+    pub const IP6_FW = 13;
+
+    /// DECnet routing messages
+    pub const DNRTMSG = 14;
+
+    /// Kernel messages to userspace
+    pub const KOBJECT_UEVENT = 15;
+
+    pub const GENERIC = 16;
+
+    // leave room for NETLINK_DM (DM Events)
+
+    /// SCSI Transports
+    pub const SCSITRANSPORT = 18;
+
+    pub const ECRYPTFS = 19;
+
+    pub const RDMA = 20;
+
+    /// Crypto layer
+    pub const CRYPTO = 21;
+
+    /// SMC monitoring
+    pub const SMC = 22;
+};
+
+// Flags values
+
+/// It is request message.
+pub const NLM_F_REQUEST = 0x01;
+
+/// Multipart message, terminated by NLMSG_DONE
+pub const NLM_F_MULTI = 0x02;
+
+/// Reply with ack, with zero or error code
+pub const NLM_F_ACK = 0x04;
+
+/// Echo this request
+pub const NLM_F_ECHO = 0x08;
+
+/// Dump was inconsistent due to sequence change
+pub const NLM_F_DUMP_INTR = 0x10;
+
+/// Dump was filtered as requested
+pub const NLM_F_DUMP_FILTERED = 0x20;
+
+// Modifiers to GET request
+
+/// specify tree root
+pub const NLM_F_ROOT = 0x100;
+
+/// return all matching
+pub const NLM_F_MATCH = 0x200;
+
+/// atomic GET
+pub const NLM_F_ATOMIC = 0x400;
+pub const NLM_F_DUMP = NLM_F_ROOT | NLM_F_MATCH;
+
+// Modifiers to NEW request
+
+/// Override existing
+pub const NLM_F_REPLACE = 0x100;
+
+/// Do not touch, if it exists
+pub const NLM_F_EXCL = 0x200;
+
+/// Create, if it does not exist
+pub const NLM_F_CREATE = 0x400;
+
+/// Add to end of list
+pub const NLM_F_APPEND = 0x800;
+
+// Modifiers to DELETE request
+
+/// Do not delete recursively
+pub const NLM_F_NONREC = 0x100;
+
+// Flags for ACK message
+
+/// request was capped
+pub const NLM_F_CAPPED = 0x100;
+
+/// extended ACK TVLs were included
+pub const NLM_F_ACK_TLVS = 0x200;
+
+pub const NetlinkMessageType = enum(u16) {
+    /// < 0x10: reserved control messages
+    pub const MIN_TYPE = 0x10;
+
+    /// Nothing.
+    NOOP = 0x1,
+
+    /// Error
+    ERROR = 0x2,
+
+    /// End of a dump
+    DONE = 0x3,
+
+    /// Data lost
+    OVERRUN = 0x4,
+
+    // rtlink types
+
+    RTM_NEWLINK = 16,
+    RTM_DELLINK,
+    RTM_GETLINK,
+    RTM_SETLINK,
+
+    RTM_NEWADDR = 20,
+    RTM_DELADDR,
+    RTM_GETADDR,
+
+    RTM_NEWROUTE = 24,
+    RTM_DELROUTE,
+    RTM_GETROUTE,
+
+    RTM_NEWNEIGH = 28,
+    RTM_DELNEIGH,
+    RTM_GETNEIGH,
+
+    RTM_NEWRULE = 32,
+    RTM_DELRULE,
+    RTM_GETRULE,
+
+    RTM_NEWQDISC = 36,
+    RTM_DELQDISC,
+    RTM_GETQDISC,
+
+    RTM_NEWTCLASS = 40,
+    RTM_DELTCLASS,
+    RTM_GETTCLASS,
+
+    RTM_NEWTFILTER = 44,
+    RTM_DELTFILTER,
+    RTM_GETTFILTER,
+
+    RTM_NEWACTION = 48,
+    RTM_DELACTION,
+    RTM_GETACTION,
+
+    RTM_NEWPREFIX = 52,
+
+    RTM_GETMULTICAST = 58,
+
+    RTM_GETANYCAST = 62,
+
+    RTM_NEWNEIGHTBL = 64,
+    RTM_GETNEIGHTBL = 66,
+    RTM_SETNEIGHTBL,
+
+    RTM_NEWNDUSEROPT = 68,
+
+    RTM_NEWADDRLABEL = 72,
+    RTM_DELADDRLABEL,
+    RTM_GETADDRLABEL,
+
+    RTM_GETDCB = 78,
+    RTM_SETDCB,
+
+    RTM_NEWNETCONF = 80,
+    RTM_DELNETCONF,
+    RTM_GETNETCONF = 82,
+
+    RTM_NEWMDB = 84,
+    RTM_DELMDB = 85,
+    RTM_GETMDB = 86,
+
+    RTM_NEWNSID = 88,
+    RTM_DELNSID = 89,
+    RTM_GETNSID = 90,
+
+    RTM_NEWSTATS = 92,
+    RTM_GETSTATS = 94,
+
+    RTM_NEWCACHEREPORT = 96,
+
+    RTM_NEWCHAIN = 100,
+    RTM_DELCHAIN,
+    RTM_GETCHAIN,
+
+    RTM_NEWNEXTHOP = 104,
+    RTM_DELNEXTHOP,
+    RTM_GETNEXTHOP,
+
+    _,
+};
+
+/// Netlink socket address
+pub const sockaddr_nl = extern struct {
+    family: sa_family_t = AF_NETLINK,
+    __pad1: c_ushort = 0,
+
+    /// port ID
+    pid: u32,
+
+    /// multicast groups mask
+    groups: u32,
+};
+
+/// Netlink message header
+/// Specified in RFC 3549 Section 2.3.2
+pub const nlmsghdr = extern struct {
+    /// Length of message including header
+    len: u32,
+
+    /// Message content
+    @"type": NetlinkMessageType,
+
+    /// Additional flags
+    flags: u16,
+
+    /// Sequence number
+    seq: u32,
+
+    /// Sending process port ID
+    pid: u32,
+};
+
+pub const ifinfomsg = extern struct {
+    family: u8,
+    __pad1: u8 = 0,
+
+    /// ARPHRD_*
+    @"type": c_ushort,
+
+    /// Link index
+    index: c_int,
+
+    /// IFF_* flags
+    flags: c_uint,
+
+    /// IFF_* change mask
+    change: c_uint,
+};
+
+pub const rtattr = extern struct {
+    /// Length of option
+    len: c_ushort,
+
+    /// Type of option
+    @"type": IFLA,
+
+    pub const ALIGNTO = 4;
+};
+
+pub const IFLA = enum(c_ushort) {
+    UNSPEC,
+    ADDRESS,
+    BROADCAST,
+    IFNAME,
+    MTU,
+    LINK,
+    QDISC,
+    STATS,
+    COST,
+    PRIORITY,
+    MASTER,
+
+    /// Wireless Extension event
+    WIRELESS,
+
+    /// Protocol specific information for a link
+    PROTINFO,
+
+    TXQLEN,
+    MAP,
+    WEIGHT,
+    OPERSTATE,
+    LINKMODE,
+    LINKINFO,
+    NET_NS_PID,
+    IFALIAS,
+
+    /// Number of VFs if device is SR-IOV PF
+    NUM_VF,
+
+    VFINFO_LIST,
+    STATS64,
+    VF_PORTS,
+    PORT_SELF,
+    AF_SPEC,
+
+    /// Group the device belongs to
+    GROUP,
+
+    NET_NS_FD,
+
+    /// Extended info mask, VFs, etc
+    EXT_MASK,
+
+    /// Promiscuity count: > 0 means acts PROMISC
+    PROMISCUITY,
+
+    NUM_TX_QUEUES,
+    NUM_RX_QUEUES,
+    CARRIER,
+    PHYS_PORT_ID,
+    CARRIER_CHANGES,
+    PHYS_SWITCH_ID,
+    LINK_NETNSID,
+    PHYS_PORT_NAME,
+    PROTO_DOWN,
+    GSO_MAX_SEGS,
+    GSO_MAX_SIZE,
+    PAD,
+    XDP,
+    EVENT,
+
+    NEW_NETNSID,
+    IF_NETNSID,
+
+    CARRIER_UP_COUNT,
+    CARRIER_DOWN_COUNT,
+    NEW_IFINDEX,
+    MIN_MTU,
+    MAX_MTU,
+
+    _,
+
+    pub const TARGET_NETNSID: IFLA = .IF_NETNSID;
+};
+
+pub const rtnl_link_ifmap = extern struct {
+    mem_start: u64,
+    mem_end: u64,
+    base_addr: u64,
+    irq: u16,
+    dma: u8,
+    port: u8,
+};
+
+pub const rtnl_link_stats = extern struct {
+    /// total packets received
+    rx_packets: u32,
+
+    /// total packets transmitted
+    tx_packets: u32,
+
+    /// total bytes received
+    rx_bytes: u32,
+
+    /// total bytes transmitted
+    tx_bytes: u32,
+
+    /// bad packets received
+    rx_errors: u32,
+
+    /// packet transmit problems
+    tx_errors: u32,
+
+    /// no space in linux buffers
+    rx_dropped: u32,
+
+    /// no space available in linux
+    tx_dropped: u32,
+
+    /// multicast packets received
+    multicast: u32,
+
+    collisions: u32,
+
+    // detailed rx_errors
+
+    rx_length_errors: u32,
+
+    /// receiver ring buff overflow
+    rx_over_errors: u32,
+
+    /// recved pkt with crc error
+    rx_crc_errors: u32,
+
+    /// recv'd frame alignment error
+    rx_frame_errors: u32,
+
+    /// recv'r fifo overrun
+    rx_fifo_errors: u32,
+
+    /// receiver missed packet
+    rx_missed_errors: u32,
+
+    // detailed tx_errors
+    tx_aborted_errors: u32,
+    tx_carrier_errors: u32,
+    tx_fifo_errors: u32,
+    tx_heartbeat_errors: u32,
+    tx_window_errors: u32,
+
+    // for cslip etc
+
+    rx_compressed: u32,
+    tx_compressed: u32,
+
+    /// dropped, no handler found
+    rx_nohandler: u32,
+};
+
+pub const rtnl_link_stats64 = extern struct {
+    /// total packets received
+    rx_packets: u64,
+
+    /// total packets transmitted
+    tx_packets: u64,
+
+    /// total bytes received
+    rx_bytes: u64,
+
+    /// total bytes transmitted
+    tx_bytes: u64,
+
+    /// bad packets received
+    rx_errors: u64,
+
+    /// packet transmit problems
+    tx_errors: u64,
+
+    /// no space in linux buffers
+    rx_dropped: u64,
+
+    /// no space available in linux
+    tx_dropped: u64,
+
+    /// multicast packets received
+    multicast: u64,
+
+    collisions: u64,
+
+    // detailed rx_errors
+
+    rx_length_errors: u64,
+
+    /// receiver ring buff overflow
+    rx_over_errors: u64,
+
+    /// recved pkt with crc error
+    rx_crc_errors: u64,
+
+    /// recv'd frame alignment error
+    rx_frame_errors: u64,
+
+    /// recv'r fifo overrun
+    rx_fifo_errors: u64,
+
+    /// receiver missed packet
+    rx_missed_errors: u64,
+
+    // detailed tx_errors
+    tx_aborted_errors: u64,
+    tx_carrier_errors: u64,
+    tx_fifo_errors: u64,
+    tx_heartbeat_errors: u64,
+    tx_window_errors: u64,
+
+    // for cslip etc
+
+    rx_compressed: u64,
+    tx_compressed: u64,
+
+    /// dropped, no handler found
+    rx_nohandler: u64,
+};
diff --git a/lib/std/os/linux/arm-eabi.zig b/lib/std/os/linux/arm-eabi.zig
index 415cfd42f2..9c50f8494c 100644
--- a/lib/std/os/linux/arm-eabi.zig
+++ b/lib/std/os/linux/arm-eabi.zig
@@ -1,5 +1,3 @@
-usingnamespace @import("../bits/linux.zig");
-
 pub fn syscall0(number: SYS) usize {
     return asm volatile ("svc #0"
         : [ret] "={r0}" (-> usize),
diff --git a/lib/std/os/linux/arm64.zig b/lib/std/os/linux/arm64.zig
index 3a619c5f45..c9d95ecc18 100644
--- a/lib/std/os/linux/arm64.zig
+++ b/lib/std/os/linux/arm64.zig
@@ -1,5 +1,3 @@
-usingnamespace @import("../bits/linux.zig");
-
 pub fn syscall0(number: SYS) usize {
     return asm volatile ("svc #0"
         : [ret] "={x0}" (-> usize),
diff --git a/lib/std/os/bits/linux/errno/generic.zig b/lib/std/os/linux/errno/generic.zig
similarity index 100%
rename from lib/std/os/bits/linux/errno/generic.zig
rename to lib/std/os/linux/errno/generic.zig
diff --git a/lib/std/os/bits/linux/errno/mips.zig b/lib/std/os/linux/errno/mips.zig
similarity index 100%
rename from lib/std/os/bits/linux/errno/mips.zig
rename to lib/std/os/linux/errno/mips.zig
diff --git a/lib/std/os/bits/linux/errno/sparc.zig b/lib/std/os/linux/errno/sparc.zig
similarity index 100%
rename from lib/std/os/bits/linux/errno/sparc.zig
rename to lib/std/os/linux/errno/sparc.zig
diff --git a/lib/std/os/linux/i386.zig b/lib/std/os/linux/i386.zig
index 04a67da762..c40a438563 100644
--- a/lib/std/os/linux/i386.zig
+++ b/lib/std/os/linux/i386.zig
@@ -1,5 +1,3 @@
-usingnamespace @import("../bits/linux.zig");
-
 pub fn syscall0(number: SYS) usize {
     return asm volatile ("int $0x80"
         : [ret] "={eax}" (-> usize),
diff --git a/lib/std/os/linux/mips.zig b/lib/std/os/linux/mips.zig
index f59f04b130..bc1ebede1a 100644
--- a/lib/std/os/linux/mips.zig
+++ b/lib/std/os/linux/mips.zig
@@ -1,5 +1,3 @@
-usingnamespace @import("../bits/linux.zig");
-
 pub fn syscall0(number: SYS) usize {
     return asm volatile (
         \\ syscall
diff --git a/lib/std/os/linux/powerpc.zig b/lib/std/os/linux/powerpc.zig
index 760655b5fa..0bcc311f58 100644
--- a/lib/std/os/linux/powerpc.zig
+++ b/lib/std/os/linux/powerpc.zig
@@ -1,5 +1,3 @@
-usingnamespace @import("../bits/linux.zig");
-
 pub fn syscall0(number: SYS) usize {
     return asm volatile (
         \\ sc
diff --git a/lib/std/os/linux/powerpc64.zig b/lib/std/os/linux/powerpc64.zig
index 760655b5fa..0bcc311f58 100644
--- a/lib/std/os/linux/powerpc64.zig
+++ b/lib/std/os/linux/powerpc64.zig
@@ -1,5 +1,3 @@
-usingnamespace @import("../bits/linux.zig");
-
 pub fn syscall0(number: SYS) usize {
     return asm volatile (
         \\ sc
diff --git a/lib/std/os/linux/riscv64.zig b/lib/std/os/linux/riscv64.zig
index 1448bfe3d3..e0aaa2a2ed 100644
--- a/lib/std/os/linux/riscv64.zig
+++ b/lib/std/os/linux/riscv64.zig
@@ -1,5 +1,3 @@
-usingnamespace @import("../bits/linux.zig");
-
 pub fn syscall0(number: SYS) usize {
     return asm volatile ("ecall"
         : [ret] "={x10}" (-> usize),
diff --git a/lib/std/os/linux/sparc64.zig b/lib/std/os/linux/sparc64.zig
index ce41af40d6..d5fdcb6993 100644
--- a/lib/std/os/linux/sparc64.zig
+++ b/lib/std/os/linux/sparc64.zig
@@ -1,5 +1,3 @@
-usingnamespace @import("../bits/linux.zig");
-
 pub fn syscall_pipe(fd: *[2]i32) usize {
     return asm volatile (
         \\ mov %[arg], %%g3
diff --git a/lib/std/os/linux/tls.zig b/lib/std/os/linux/tls.zig
index d04bf24b5f..de9c475083 100644
--- a/lib/std/os/linux/tls.zig
+++ b/lib/std/os/linux/tls.zig
@@ -135,7 +135,7 @@ pub fn setThreadPointer(addr: usize) void {
             );
         },
         .x86_64 => {
-            const rc = std.os.linux.syscall2(.arch_prctl, std.os.linux.ARCH_SET_FS, addr);
+            const rc = std.os.linux.syscall2(.arch_prctl, std.os.linux.ARCH.SET_FS, addr);
             assert(rc == 0);
         },
         .aarch64 => {
@@ -319,8 +319,8 @@ pub fn initStaticTLS(phdrs: []elf.Phdr) void {
         const alloc_tls_area = os.mmap(
             null,
             tls_image.alloc_size + tls_image.alloc_align - 1,
-            os.PROT_READ | os.PROT_WRITE,
-            os.MAP_PRIVATE | os.MAP_ANONYMOUS,
+            os.PROT.READ | os.PROT.WRITE,
+            os.MAP.PRIVATE | os.MAP.ANONYMOUS,
             -1,
             0,
         ) catch os.abort();
diff --git a/lib/std/os/linux/x86_64.zig b/lib/std/os/linux/x86_64.zig
index 7398c3afb6..ee1931e4ea 100644
--- a/lib/std/os/linux/x86_64.zig
+++ b/lib/std/os/linux/x86_64.zig
@@ -1,4 +1,16 @@
-usingnamespace @import("../bits/linux.zig");
+const std = @import("../../std.zig");
+const linux = std.os.linux;
+
+const pid_t = linux.pid_t;
+const uid_t = linux.uid_t;
+const gid_t = linux.gid_t;
+const clock_t = linux.clock_t;
+const stack_t = linux.stack_t;
+const sigset_t = linux.sigset_t;
+const sockaddr = linux.sockaddr;
+const socklen_t = linux.socklen_t;
+const iovec = linux.iovec;
+const iovec_const = linux.iovec_const;
 
 pub fn syscall0(number: SYS) usize {
     return asm volatile ("syscall"
@@ -97,3 +109,681 @@ pub fn restore_rt() callconv(.Naked) void {
         : "rcx", "r11", "memory"
     );
 }
+
+pub const mode_t = usize;
+pub const time_t = isize;
+
+pub const SYS = enum(usize) {
+    read = 0,
+    write = 1,
+    open = 2,
+    close = 3,
+    stat = 4,
+    fstat = 5,
+    lstat = 6,
+    poll = 7,
+    lseek = 8,
+    mmap = 9,
+    mprotect = 10,
+    munmap = 11,
+    brk = 12,
+    rt_sigaction = 13,
+    rt_sigprocmask = 14,
+    rt_sigreturn = 15,
+    ioctl = 16,
+    pread = 17,
+    pwrite = 18,
+    readv = 19,
+    writev = 20,
+    access = 21,
+    pipe = 22,
+    select = 23,
+    sched_yield = 24,
+    mremap = 25,
+    msync = 26,
+    mincore = 27,
+    madvise = 28,
+    shmget = 29,
+    shmat = 30,
+    shmctl = 31,
+    dup = 32,
+    dup2 = 33,
+    pause = 34,
+    nanosleep = 35,
+    getitimer = 36,
+    alarm = 37,
+    setitimer = 38,
+    getpid = 39,
+    sendfile = 40,
+    socket = 41,
+    connect = 42,
+    accept = 43,
+    sendto = 44,
+    recvfrom = 45,
+    sendmsg = 46,
+    recvmsg = 47,
+    shutdown = 48,
+    bind = 49,
+    listen = 50,
+    getsockname = 51,
+    getpeername = 52,
+    socketpair = 53,
+    setsockopt = 54,
+    getsockopt = 55,
+    clone = 56,
+    fork = 57,
+    vfork = 58,
+    execve = 59,
+    exit = 60,
+    wait4 = 61,
+    kill = 62,
+    uname = 63,
+    semget = 64,
+    semop = 65,
+    semctl = 66,
+    shmdt = 67,
+    msgget = 68,
+    msgsnd = 69,
+    msgrcv = 70,
+    msgctl = 71,
+    fcntl = 72,
+    flock = 73,
+    fsync = 74,
+    fdatasync = 75,
+    truncate = 76,
+    ftruncate = 77,
+    getdents = 78,
+    getcwd = 79,
+    chdir = 80,
+    fchdir = 81,
+    rename = 82,
+    mkdir = 83,
+    rmdir = 84,
+    creat = 85,
+    link = 86,
+    unlink = 87,
+    symlink = 88,
+    readlink = 89,
+    chmod = 90,
+    fchmod = 91,
+    chown = 92,
+    fchown = 93,
+    lchown = 94,
+    umask = 95,
+    gettimeofday = 96,
+    getrlimit = 97,
+    getrusage = 98,
+    sysinfo = 99,
+    times = 100,
+    ptrace = 101,
+    getuid = 102,
+    syslog = 103,
+    getgid = 104,
+    setuid = 105,
+    setgid = 106,
+    geteuid = 107,
+    getegid = 108,
+    setpgid = 109,
+    getppid = 110,
+    getpgrp = 111,
+    setsid = 112,
+    setreuid = 113,
+    setregid = 114,
+    getgroups = 115,
+    setgroups = 116,
+    setresuid = 117,
+    getresuid = 118,
+    setresgid = 119,
+    getresgid = 120,
+    getpgid = 121,
+    setfsuid = 122,
+    setfsgid = 123,
+    getsid = 124,
+    capget = 125,
+    capset = 126,
+    rt_sigpending = 127,
+    rt_sigtimedwait = 128,
+    rt_sigqueueinfo = 129,
+    rt_sigsuspend = 130,
+    sigaltstack = 131,
+    utime = 132,
+    mknod = 133,
+    uselib = 134,
+    personality = 135,
+    ustat = 136,
+    statfs = 137,
+    fstatfs = 138,
+    sysfs = 139,
+    getpriority = 140,
+    setpriority = 141,
+    sched_setparam = 142,
+    sched_getparam = 143,
+    sched_setscheduler = 144,
+    sched_getscheduler = 145,
+    sched_get_priority_max = 146,
+    sched_get_priority_min = 147,
+    sched_rr_get_interval = 148,
+    mlock = 149,
+    munlock = 150,
+    mlockall = 151,
+    munlockall = 152,
+    vhangup = 153,
+    modify_ldt = 154,
+    pivot_root = 155,
+    _sysctl = 156,
+    prctl = 157,
+    arch_prctl = 158,
+    adjtimex = 159,
+    setrlimit = 160,
+    chroot = 161,
+    sync = 162,
+    acct = 163,
+    settimeofday = 164,
+    mount = 165,
+    umount2 = 166,
+    swapon = 167,
+    swapoff = 168,
+    reboot = 169,
+    sethostname = 170,
+    setdomainname = 171,
+    iopl = 172,
+    ioperm = 173,
+    create_module = 174,
+    init_module = 175,
+    delete_module = 176,
+    get_kernel_syms = 177,
+    query_module = 178,
+    quotactl = 179,
+    nfsservctl = 180,
+    getpmsg = 181,
+    putpmsg = 182,
+    afs_syscall = 183,
+    tuxcall = 184,
+    security = 185,
+    gettid = 186,
+    readahead = 187,
+    setxattr = 188,
+    lsetxattr = 189,
+    fsetxattr = 190,
+    getxattr = 191,
+    lgetxattr = 192,
+    fgetxattr = 193,
+    listxattr = 194,
+    llistxattr = 195,
+    flistxattr = 196,
+    removexattr = 197,
+    lremovexattr = 198,
+    fremovexattr = 199,
+    tkill = 200,
+    time = 201,
+    futex = 202,
+    sched_setaffinity = 203,
+    sched_getaffinity = 204,
+    set_thread_area = 205,
+    io_setup = 206,
+    io_destroy = 207,
+    io_getevents = 208,
+    io_submit = 209,
+    io_cancel = 210,
+    get_thread_area = 211,
+    lookup_dcookie = 212,
+    epoll_create = 213,
+    epoll_ctl_old = 214,
+    epoll_wait_old = 215,
+    remap_file_pages = 216,
+    getdents64 = 217,
+    set_tid_address = 218,
+    restart_syscall = 219,
+    semtimedop = 220,
+    fadvise64 = 221,
+    timer_create = 222,
+    timer_settime = 223,
+    timer_gettime = 224,
+    timer_getoverrun = 225,
+    timer_delete = 226,
+    clock_settime = 227,
+    clock_gettime = 228,
+    clock_getres = 229,
+    clock_nanosleep = 230,
+    exit_group = 231,
+    epoll_wait = 232,
+    epoll_ctl = 233,
+    tgkill = 234,
+    utimes = 235,
+    vserver = 236,
+    mbind = 237,
+    set_mempolicy = 238,
+    get_mempolicy = 239,
+    mq_open = 240,
+    mq_unlink = 241,
+    mq_timedsend = 242,
+    mq_timedreceive = 243,
+    mq_notify = 244,
+    mq_getsetattr = 245,
+    kexec_load = 246,
+    waitid = 247,
+    add_key = 248,
+    request_key = 249,
+    keyctl = 250,
+    ioprio_set = 251,
+    ioprio_get = 252,
+    inotify_init = 253,
+    inotify_add_watch = 254,
+    inotify_rm_watch = 255,
+    migrate_pages = 256,
+    openat = 257,
+    mkdirat = 258,
+    mknodat = 259,
+    fchownat = 260,
+    futimesat = 261,
+    fstatat = 262,
+    unlinkat = 263,
+    renameat = 264,
+    linkat = 265,
+    symlinkat = 266,
+    readlinkat = 267,
+    fchmodat = 268,
+    faccessat = 269,
+    pselect6 = 270,
+    ppoll = 271,
+    unshare = 272,
+    set_robust_list = 273,
+    get_robust_list = 274,
+    splice = 275,
+    tee = 276,
+    sync_file_range = 277,
+    vmsplice = 278,
+    move_pages = 279,
+    utimensat = 280,
+    epoll_pwait = 281,
+    signalfd = 282,
+    timerfd_create = 283,
+    eventfd = 284,
+    fallocate = 285,
+    timerfd_settime = 286,
+    timerfd_gettime = 287,
+    accept4 = 288,
+    signalfd4 = 289,
+    eventfd2 = 290,
+    epoll_create1 = 291,
+    dup3 = 292,
+    pipe2 = 293,
+    inotify_init1 = 294,
+    preadv = 295,
+    pwritev = 296,
+    rt_tgsigqueueinfo = 297,
+    perf_event_open = 298,
+    recvmmsg = 299,
+    fanotify_init = 300,
+    fanotify_mark = 301,
+    prlimit64 = 302,
+    name_to_handle_at = 303,
+    open_by_handle_at = 304,
+    clock_adjtime = 305,
+    syncfs = 306,
+    sendmmsg = 307,
+    setns = 308,
+    getcpu = 309,
+    process_vm_readv = 310,
+    process_vm_writev = 311,
+    kcmp = 312,
+    finit_module = 313,
+    sched_setattr = 314,
+    sched_getattr = 315,
+    renameat2 = 316,
+    seccomp = 317,
+    getrandom = 318,
+    memfd_create = 319,
+    kexec_file_load = 320,
+    bpf = 321,
+    execveat = 322,
+    userfaultfd = 323,
+    membarrier = 324,
+    mlock2 = 325,
+    copy_file_range = 326,
+    preadv2 = 327,
+    pwritev2 = 328,
+    pkey_mprotect = 329,
+    pkey_alloc = 330,
+    pkey_free = 331,
+    statx = 332,
+    io_pgetevents = 333,
+    rseq = 334,
+    pidfd_send_signal = 424,
+    io_uring_setup = 425,
+    io_uring_enter = 426,
+    io_uring_register = 427,
+    open_tree = 428,
+    move_mount = 429,
+    fsopen = 430,
+    fsconfig = 431,
+    fsmount = 432,
+    fspick = 433,
+    pidfd_open = 434,
+    clone3 = 435,
+    close_range = 436,
+    openat2 = 437,
+    pidfd_getfd = 438,
+    faccessat2 = 439,
+    process_madvise = 440,
+    epoll_pwait2 = 441,
+
+    _,
+};
+
+pub const O = struct {
+    pub const RDONLY = 0o0;
+    pub const WRONLY = 0o1;
+    pub const RDWR = 0o2;
+
+    pub const CREAT = 0o100;
+    pub const EXCL = 0o200;
+    pub const NOCTTY = 0o400;
+    pub const TRUNC = 0o1000;
+    pub const APPEND = 0o2000;
+    pub const NONBLOCK = 0o4000;
+    pub const DSYNC = 0o10000;
+    pub const SYNC = 0o4010000;
+    pub const RSYNC = 0o4010000;
+    pub const DIRECTORY = 0o200000;
+    pub const NOFOLLOW = 0o400000;
+    pub const CLOEXEC = 0o2000000;
+
+    pub const ASYNC = 0o20000;
+    pub const DIRECT = 0o40000;
+    pub const LARGEFILE = 0;
+    pub const NOATIME = 0o1000000;
+    pub const PATH = 0o10000000;
+    pub const TMPFILE = 0o20200000;
+    pub const NDELAY = NONBLOCK;
+};
+
+pub const F = struct {
+    pub const DUPFD = 0;
+    pub const GETFD = 1;
+    pub const SETFD = 2;
+    pub const GETFL = 3;
+    pub const SETFL = 4;
+    pub const GETLK = 5;
+    pub const SETLK = 6;
+    pub const SETLKW = 7;
+    pub const SETOWN = 8;
+    pub const GETOWN = 9;
+    pub const SETSIG = 10;
+    pub const GETSIG = 11;
+
+    pub const SETOWN_EX = 15;
+    pub const GETOWN_EX = 16;
+    pub const GETOWNER_UIDS = 17;
+
+    pub const RDLCK = 0;
+    pub const WRLCK = 1;
+    pub const UNLCK = 2;
+};
+
+pub const MAP = struct {
+    /// Share changes
+    pub const SHARED = 0x01;
+
+    /// Changes are private
+    pub const PRIVATE = 0x02;
+
+    /// share + validate extension flags
+    pub const SHARED_VALIDATE = 0x03;
+
+    /// Mask for type of mapping
+    pub const TYPE = 0x0f;
+
+    /// Interpret addr exactly
+    pub const FIXED = 0x10;
+
+    /// don't use a file
+    pub const ANONYMOUS = 0x20;
+
+    /// populate (prefault) pagetables
+    pub const POPULATE = 0x8000;
+
+    /// do not block on IO
+    pub const NONBLOCK = 0x10000;
+
+    /// give out an address that is best suited for process/thread stacks
+    pub const STACK = 0x20000;
+
+    /// create a huge page mapping
+    pub const HUGETLB = 0x40000;
+
+    /// perform synchronous page faults for the mapping
+    pub const SYNC = 0x80000;
+
+    /// FIXED which doesn't unmap underlying mapping
+    pub const FIXED_NOREPLACE = 0x100000;
+
+    /// For anonymous mmap, memory could be uninitialized
+    pub const UNINITIALIZED = 0x4000000;
+    /// only give out 32bit addresses
+    pub const @"32BIT" = 0x40;
+
+    /// stack-like segment
+    pub const GROWSDOWN = 0x0100;
+
+    /// ETXTBSY
+    pub const DENYWRITE = 0x0800;
+
+    /// mark it as an executable
+    pub const EXECUTABLE = 0x1000;
+
+    /// pages are locked
+    pub const LOCKED = 0x2000;
+
+    /// don't check for reservations
+    pub const NORESERVE = 0x4000;
+};
+
+pub const VDSO = struct {
+    pub const CGT_SYM = "__vdso_clock_gettime";
+    pub const CGT_VER = "LINUX_2.6";
+
+    pub const GETCPU_SYM = "__vdso_getcpu";
+    pub const GETCPU_VER = "LINUX_2.6";
+};
+
+pub const ARCH = struct {
+    pub const SET_GS = 0x1001;
+    pub const SET_FS = 0x1002;
+    pub const GET_FS = 0x1003;
+    pub const GET_GS = 0x1004;
+};
+
+pub const REG = struct {
+    pub const R8 = 0;
+    pub const R9 = 1;
+    pub const R10 = 2;
+    pub const R11 = 3;
+    pub const R12 = 4;
+    pub const R13 = 5;
+    pub const R14 = 6;
+    pub const R15 = 7;
+    pub const RDI = 8;
+    pub const RSI = 9;
+    pub const RBP = 10;
+    pub const RBX = 11;
+    pub const RDX = 12;
+    pub const RAX = 13;
+    pub const RCX = 14;
+    pub const RSP = 15;
+    pub const RIP = 16;
+    pub const EFL = 17;
+    pub const CSGSFS = 18;
+    pub const ERR = 19;
+    pub const TRAPNO = 20;
+    pub const OLDMASK = 21;
+    pub const CR2 = 22;
+};
+
+pub const LOCK = struct {
+    pub const SH = 1;
+    pub const EX = 2;
+    pub const NB = 4;
+    pub const UN = 8;
+};
+
+pub const Flock = extern struct {
+    type: i16,
+    whence: i16,
+    start: off_t,
+    len: off_t,
+    pid: pid_t,
+};
+
+pub const msghdr = extern struct {
+    name: ?*sockaddr,
+    namelen: socklen_t,
+    iov: [*]iovec,
+    iovlen: i32,
+    __pad1: i32 = 0,
+    control: ?*c_void,
+    controllen: socklen_t,
+    __pad2: socklen_t = 0,
+    flags: i32,
+};
+
+pub const msghdr_const = extern struct {
+    name: ?*const sockaddr,
+    namelen: socklen_t,
+    iov: [*]iovec_const,
+    iovlen: i32,
+    __pad1: i32 = 0,
+    control: ?*c_void,
+    controllen: socklen_t,
+    __pad2: socklen_t = 0,
+    flags: i32,
+};
+
+pub const off_t = i64;
+pub const ino_t = u64;
+pub const dev_t = u64;
+
+// The `stat` definition used by the Linux kernel.
+pub const kernel_stat = extern struct {
+    dev: dev_t,
+    ino: ino_t,
+    nlink: usize,
+
+    mode: u32,
+    uid: uid_t,
+    gid: gid_t,
+    __pad0: u32,
+    rdev: dev_t,
+    size: off_t,
+    blksize: isize,
+    blocks: i64,
+
+    atim: timespec,
+    mtim: timespec,
+    ctim: timespec,
+    __unused: [3]isize,
+
+    pub fn atime(self: @This()) timespec {
+        return self.atim;
+    }
+
+    pub fn mtime(self: @This()) timespec {
+        return self.mtim;
+    }
+
+    pub fn ctime(self: @This()) timespec {
+        return self.ctim;
+    }
+};
+
+// The `stat64` definition used by the libc.
+pub const libc_stat = kernel_stat;
+
+pub const timespec = extern struct {
+    tv_sec: isize,
+    tv_nsec: isize,
+};
+
+pub const timeval = extern struct {
+    tv_sec: isize,
+    tv_usec: isize,
+};
+
+pub const timezone = extern struct {
+    tz_minuteswest: i32,
+    tz_dsttime: i32,
+};
+
+pub const Elf_Symndx = u32;
+
+pub const greg_t = usize;
+pub const gregset_t = [23]greg_t;
+pub const fpstate = extern struct {
+    cwd: u16,
+    swd: u16,
+    ftw: u16,
+    fop: u16,
+    rip: usize,
+    rdp: usize,
+    mxcsr: u32,
+    mxcr_mask: u32,
+    st: [8]extern struct {
+        significand: [4]u16,
+        exponent: u16,
+        padding: [3]u16 = undefined,
+    },
+    xmm: [16]extern struct {
+        element: [4]u32,
+    },
+    padding: [24]u32 = undefined,
+};
+pub const fpregset_t = *fpstate;
+pub const sigcontext = extern struct {
+    r8: usize,
+    r9: usize,
+    r10: usize,
+    r11: usize,
+    r12: usize,
+    r13: usize,
+    r14: usize,
+    r15: usize,
+
+    rdi: usize,
+    rsi: usize,
+    rbp: usize,
+    rbx: usize,
+    rdx: usize,
+    rax: usize,
+    rcx: usize,
+    rsp: usize,
+    rip: usize,
+    eflags: usize,
+
+    cs: u16,
+    gs: u16,
+    fs: u16,
+    pad0: u16 = undefined,
+
+    err: usize,
+    trapno: usize,
+    oldmask: usize,
+    cr2: usize,
+
+    fpstate: *fpstate,
+    reserved1: [8]usize = undefined,
+};
+
+pub const mcontext_t = extern struct {
+    gregs: gregset_t,
+    fpregs: fpregset_t,
+    reserved1: [8]usize = undefined,
+};
+
+pub const ucontext_t = extern struct {
+    flags: usize,
+    link: *ucontext_t,
+    stack: stack_t,
+    mcontext: mcontext_t,
+    sigmask: sigset_t,
+    fpregs_mem: [64]usize,
+};
diff --git a/lib/std/os/netbsd.zig b/lib/std/os/netbsd.zig
deleted file mode 100644
index 5f9684b96d..0000000000
--- a/lib/std/os/netbsd.zig
+++ /dev/null
@@ -1,3 +0,0 @@
-const std = @import("../std.zig");
-pub usingnamespace std.c;
-pub usingnamespace @import("bits.zig");
diff --git a/lib/std/os/openbsd.zig b/lib/std/os/openbsd.zig
deleted file mode 100644
index 5f9684b96d..0000000000
--- a/lib/std/os/openbsd.zig
+++ /dev/null
@@ -1,3 +0,0 @@
-const std = @import("../std.zig");
-pub usingnamespace std.c;
-pub usingnamespace @import("bits.zig");
diff --git a/lib/std/os/wasi.zig b/lib/std/os/wasi.zig
index 708f445ee4..002f7ed684 100644
--- a/lib/std/os/wasi.zig
+++ b/lib/std/os/wasi.zig
@@ -4,8 +4,6 @@
 const std = @import("std");
 const assert = std.debug.assert;
 
-pub usingnamespace @import("bits.zig");
-
 comptime {
     assert(@alignOf(i8) == 1);
     assert(@alignOf(u8) == 1);
diff --git a/lib/std/time.zig b/lib/std/time.zig
index 2306530753..9e070ef9a5 100644
--- a/lib/std/time.zig
+++ b/lib/std/time.zig
@@ -24,7 +24,7 @@ pub fn sleep(nanoseconds: u64) void {
         const w = std.os.wasi;
         const userdata: w.userdata_t = 0x0123_45678;
         const clock = w.subscription_clock_t{
-            .id = w.CLOCK_MONOTONIC,
+            .id = w.CLOCK.MONOTONIC,
             .timeout = nanoseconds,
             .precision = 0,
             .flags = 0,
@@ -152,7 +152,7 @@ pub const Timer = struct {
     /// At some point we may change our minds on RAW, but for now we're
     /// sticking with posix standard MONOTONIC. For more information, see:
     /// https://github.com/ziglang/zig/pull/933
-    const monotonic_clock_id = os.CLOCK_MONOTONIC;
+    const monotonic_clock_id = os.CLOCK.MONOTONIC;
 
     /// Initialize the timer structure.
     /// Can only fail when running in a hostile environment that intentionally injects
@@ -161,7 +161,7 @@ pub const Timer = struct {
     pub fn start() Error!Timer {
         // This gives us an opportunity to grab the counter frequency in windows.
         // On Windows: QueryPerformanceCounter will succeed on anything >= XP/2000.
-        // On Posix: CLOCK_MONOTONIC will only fail if the monotonic counter is not
+        // On Posix: CLOCK.MONOTONIC will only fail if the monotonic counter is not
         // supported, or if the timespec pointer is out of bounds, which should be
         // impossible here barring cosmic rays or other such occurrences of
         // incredibly bad luck.