mirror of
https://github.com/ziglang/zig.git
synced 2025-12-09 07:43:10 +00:00
523fae420b
alongside the typical msghdr struct, Zig has added a msghdr_const type that can be used with sendmsg which allows const data to be provided. I believe that data pointed to by the iov and control fields in msghdr are also left unmodified, in which case they can be marked const as well.
388 lines
8.7 KiB
Zig
388 lines
8.7 KiB
Zig
const std = @import("../../std.zig");
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const maxInt = std.math.maxInt;
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const linux = std.os.linux;
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const SYS = linux.SYS;
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const iovec = std.os.iovec;
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const iovec_const = std.os.iovec_const;
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const pid_t = linux.pid_t;
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const uid_t = linux.uid_t;
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const gid_t = linux.gid_t;
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const clock_t = linux.clock_t;
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const stack_t = linux.stack_t;
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const sigset_t = linux.sigset_t;
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const sockaddr = linux.sockaddr;
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const socklen_t = linux.socklen_t;
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const timespec = linux.timespec;
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pub fn syscall0(number: SYS) usize {
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return asm volatile ("syscall"
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: [ret] "={rax}" (-> usize),
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: [number] "{rax}" (@enumToInt(number)),
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: "rcx", "r11", "memory"
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);
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}
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pub fn syscall1(number: SYS, arg1: usize) usize {
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return asm volatile ("syscall"
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: [ret] "={rax}" (-> usize),
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: [number] "{rax}" (@enumToInt(number)),
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[arg1] "{rdi}" (arg1),
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: "rcx", "r11", "memory"
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);
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}
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pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
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return asm volatile ("syscall"
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: [ret] "={rax}" (-> usize),
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: [number] "{rax}" (@enumToInt(number)),
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[arg1] "{rdi}" (arg1),
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[arg2] "{rsi}" (arg2),
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: "rcx", "r11", "memory"
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);
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}
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pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
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return asm volatile ("syscall"
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: [ret] "={rax}" (-> usize),
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: [number] "{rax}" (@enumToInt(number)),
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[arg1] "{rdi}" (arg1),
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[arg2] "{rsi}" (arg2),
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[arg3] "{rdx}" (arg3),
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: "rcx", "r11", "memory"
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);
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}
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pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize {
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return asm volatile ("syscall"
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: [ret] "={rax}" (-> usize),
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: [number] "{rax}" (@enumToInt(number)),
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[arg1] "{rdi}" (arg1),
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[arg2] "{rsi}" (arg2),
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[arg3] "{rdx}" (arg3),
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[arg4] "{r10}" (arg4),
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: "rcx", "r11", "memory"
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);
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}
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pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize {
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return asm volatile ("syscall"
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: [ret] "={rax}" (-> usize),
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: [number] "{rax}" (@enumToInt(number)),
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[arg1] "{rdi}" (arg1),
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[arg2] "{rsi}" (arg2),
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[arg3] "{rdx}" (arg3),
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[arg4] "{r10}" (arg4),
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[arg5] "{r8}" (arg5),
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: "rcx", "r11", "memory"
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);
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}
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pub fn syscall6(
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number: SYS,
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arg1: usize,
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arg2: usize,
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arg3: usize,
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arg4: usize,
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arg5: usize,
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arg6: usize,
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) usize {
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return asm volatile ("syscall"
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: [ret] "={rax}" (-> usize),
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: [number] "{rax}" (@enumToInt(number)),
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[arg1] "{rdi}" (arg1),
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[arg2] "{rsi}" (arg2),
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[arg3] "{rdx}" (arg3),
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[arg4] "{r10}" (arg4),
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[arg5] "{r8}" (arg5),
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[arg6] "{r9}" (arg6),
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: "rcx", "r11", "memory"
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);
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}
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/// This matches the libc clone function.
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pub extern fn clone(func: CloneFn, stack: usize, flags: usize, arg: usize, ptid: *i32, tls: usize, ctid: *i32) usize;
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const CloneFn = switch (@import("builtin").zig_backend) {
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.stage1 => fn (arg: usize) callconv(.C) u8,
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else => *const fn (arg: usize) callconv(.C) u8,
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};
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pub const restore = restore_rt;
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pub fn restore_rt() callconv(.Naked) void {
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return asm volatile ("syscall"
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:
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: [number] "{rax}" (@enumToInt(SYS.rt_sigreturn)),
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: "rcx", "r11", "memory"
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);
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}
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pub const mode_t = usize;
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pub const time_t = isize;
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pub const nlink_t = usize;
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pub const blksize_t = isize;
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pub const blkcnt_t = isize;
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pub const O = struct {
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pub const CREAT = 0o100;
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pub const EXCL = 0o200;
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pub const NOCTTY = 0o400;
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pub const TRUNC = 0o1000;
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pub const APPEND = 0o2000;
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pub const NONBLOCK = 0o4000;
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pub const DSYNC = 0o10000;
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pub const SYNC = 0o4010000;
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pub const RSYNC = 0o4010000;
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pub const DIRECTORY = 0o200000;
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pub const NOFOLLOW = 0o400000;
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pub const CLOEXEC = 0o2000000;
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pub const ASYNC = 0o20000;
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pub const DIRECT = 0o40000;
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pub const LARGEFILE = 0;
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pub const NOATIME = 0o1000000;
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pub const PATH = 0o10000000;
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pub const TMPFILE = 0o20200000;
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pub const NDELAY = NONBLOCK;
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};
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pub const F = struct {
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pub const DUPFD = 0;
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pub const GETFD = 1;
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pub const SETFD = 2;
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pub const GETFL = 3;
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pub const SETFL = 4;
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pub const GETLK = 5;
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pub const SETLK = 6;
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pub const SETLKW = 7;
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pub const SETOWN = 8;
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pub const GETOWN = 9;
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pub const SETSIG = 10;
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pub const GETSIG = 11;
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pub const SETOWN_EX = 15;
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pub const GETOWN_EX = 16;
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pub const GETOWNER_UIDS = 17;
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pub const RDLCK = 0;
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pub const WRLCK = 1;
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pub const UNLCK = 2;
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};
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pub const MAP = struct {
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/// only give out 32bit addresses
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pub const @"32BIT" = 0x40;
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/// stack-like segment
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pub const GROWSDOWN = 0x0100;
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/// ETXTBSY
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pub const DENYWRITE = 0x0800;
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/// mark it as an executable
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pub const EXECUTABLE = 0x1000;
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/// pages are locked
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pub const LOCKED = 0x2000;
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/// don't check for reservations
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pub const NORESERVE = 0x4000;
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};
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pub const VDSO = struct {
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pub const CGT_SYM = "__vdso_clock_gettime";
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pub const CGT_VER = "LINUX_2.6";
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pub const GETCPU_SYM = "__vdso_getcpu";
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pub const GETCPU_VER = "LINUX_2.6";
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};
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pub const ARCH = struct {
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pub const SET_GS = 0x1001;
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pub const SET_FS = 0x1002;
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pub const GET_FS = 0x1003;
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pub const GET_GS = 0x1004;
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};
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pub const REG = struct {
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pub const R8 = 0;
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pub const R9 = 1;
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pub const R10 = 2;
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pub const R11 = 3;
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pub const R12 = 4;
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pub const R13 = 5;
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pub const R14 = 6;
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pub const R15 = 7;
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pub const RDI = 8;
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pub const RSI = 9;
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pub const RBP = 10;
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pub const RBX = 11;
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pub const RDX = 12;
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pub const RAX = 13;
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pub const RCX = 14;
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pub const RSP = 15;
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pub const RIP = 16;
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pub const EFL = 17;
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pub const CSGSFS = 18;
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pub const ERR = 19;
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pub const TRAPNO = 20;
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pub const OLDMASK = 21;
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pub const CR2 = 22;
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};
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pub const LOCK = struct {
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pub const SH = 1;
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pub const EX = 2;
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pub const NB = 4;
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pub const UN = 8;
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};
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pub const Flock = extern struct {
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type: i16,
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whence: i16,
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start: off_t,
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len: off_t,
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pid: pid_t,
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};
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pub const msghdr = extern struct {
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name: ?*sockaddr,
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namelen: socklen_t,
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iov: [*]iovec,
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iovlen: i32,
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__pad1: i32 = 0,
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control: ?*anyopaque,
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controllen: socklen_t,
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__pad2: socklen_t = 0,
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flags: i32,
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};
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pub const msghdr_const = extern struct {
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name: ?*const sockaddr,
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namelen: socklen_t,
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iov: [*]const iovec_const,
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iovlen: i32,
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__pad1: i32 = 0,
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control: ?*const anyopaque,
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controllen: socklen_t,
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__pad2: socklen_t = 0,
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flags: i32,
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};
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pub const off_t = i64;
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pub const ino_t = u64;
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pub const dev_t = u64;
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// The `stat` definition used by the Linux kernel.
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pub const Stat = extern struct {
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dev: dev_t,
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ino: ino_t,
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nlink: usize,
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mode: u32,
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uid: uid_t,
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gid: gid_t,
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__pad0: u32,
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rdev: dev_t,
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size: off_t,
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blksize: isize,
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blocks: i64,
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atim: timespec,
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mtim: timespec,
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ctim: timespec,
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__unused: [3]isize,
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pub fn atime(self: @This()) timespec {
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return self.atim;
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}
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pub fn mtime(self: @This()) timespec {
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return self.mtim;
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}
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pub fn ctime(self: @This()) timespec {
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return self.ctim;
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}
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};
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pub const timeval = extern struct {
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tv_sec: isize,
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tv_usec: isize,
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};
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pub const timezone = extern struct {
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tz_minuteswest: i32,
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tz_dsttime: i32,
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};
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pub const Elf_Symndx = u32;
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pub const greg_t = usize;
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pub const gregset_t = [23]greg_t;
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pub const fpstate = extern struct {
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cwd: u16,
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swd: u16,
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ftw: u16,
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fop: u16,
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rip: usize,
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rdp: usize,
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mxcsr: u32,
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mxcr_mask: u32,
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st: [8]extern struct {
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significand: [4]u16,
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exponent: u16,
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padding: [3]u16 = undefined,
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},
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xmm: [16]extern struct {
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element: [4]u32,
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},
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padding: [24]u32 = undefined,
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};
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pub const fpregset_t = *fpstate;
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pub const sigcontext = extern struct {
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r8: usize,
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r9: usize,
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r10: usize,
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r11: usize,
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r12: usize,
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r13: usize,
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r14: usize,
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r15: usize,
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rdi: usize,
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rsi: usize,
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rbp: usize,
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rbx: usize,
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rdx: usize,
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rax: usize,
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rcx: usize,
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rsp: usize,
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rip: usize,
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eflags: usize,
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cs: u16,
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gs: u16,
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fs: u16,
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pad0: u16 = undefined,
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err: usize,
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trapno: usize,
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oldmask: usize,
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cr2: usize,
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fpstate: *fpstate,
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reserved1: [8]usize = undefined,
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};
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pub const mcontext_t = extern struct {
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gregs: gregset_t,
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fpregs: fpregset_t,
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reserved1: [8]usize = undefined,
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};
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pub const ucontext_t = extern struct {
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flags: usize,
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link: ?*ucontext_t,
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stack: stack_t,
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mcontext: mcontext_t,
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sigmask: sigset_t,
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fpregs_mem: [64]usize,
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};
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