mirror of
https://github.com/ziglang/zig.git
synced 2025-12-06 14:23:09 +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.
348 lines
7.9 KiB
Zig
348 lines
7.9 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 socklen_t = linux.socklen_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 uid_t = linux.uid_t;
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const gid_t = linux.gid_t;
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const pid_t = linux.pid_t;
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const sockaddr = linux.sockaddr;
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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 ("svc #0"
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: [ret] "={r0}" (-> usize),
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: [number] "{r7}" (@enumToInt(number)),
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: "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 ("svc #0"
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: [ret] "={r0}" (-> usize),
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: [number] "{r7}" (@enumToInt(number)),
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[arg1] "{r0}" (arg1),
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: "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 ("svc #0"
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: [ret] "={r0}" (-> usize),
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: [number] "{r7}" (@enumToInt(number)),
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[arg1] "{r0}" (arg1),
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[arg2] "{r1}" (arg2),
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: "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 ("svc #0"
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: [ret] "={r0}" (-> usize),
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: [number] "{r7}" (@enumToInt(number)),
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[arg1] "{r0}" (arg1),
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[arg2] "{r1}" (arg2),
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[arg3] "{r2}" (arg3),
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: "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 ("svc #0"
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: [ret] "={r0}" (-> usize),
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: [number] "{r7}" (@enumToInt(number)),
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[arg1] "{r0}" (arg1),
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[arg2] "{r1}" (arg2),
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[arg3] "{r2}" (arg3),
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[arg4] "{r3}" (arg4),
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: "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 ("svc #0"
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: [ret] "={r0}" (-> usize),
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: [number] "{r7}" (@enumToInt(number)),
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[arg1] "{r0}" (arg1),
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[arg2] "{r1}" (arg2),
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[arg3] "{r2}" (arg3),
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[arg4] "{r3}" (arg4),
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[arg5] "{r4}" (arg5),
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: "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 ("svc #0"
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: [ret] "={r0}" (-> usize),
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: [number] "{r7}" (@enumToInt(number)),
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[arg1] "{r0}" (arg1),
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[arg2] "{r1}" (arg2),
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[arg3] "{r2}" (arg3),
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[arg4] "{r3}" (arg4),
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[arg5] "{r4}" (arg5),
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[arg6] "{r5}" (arg6),
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: "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(
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func: 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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stack: usize,
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flags: u32,
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arg: usize,
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ptid: *i32,
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tls: usize,
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ctid: *i32,
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) usize;
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pub fn restore() callconv(.Naked) void {
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return asm volatile ("svc #0"
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:
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: [number] "{r7}" (@enumToInt(SYS.sigreturn)),
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: "memory"
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);
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}
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pub fn restore_rt() callconv(.Naked) void {
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return asm volatile ("svc #0"
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:
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: [number] "{r7}" (@enumToInt(SYS.rt_sigreturn)),
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: "memory"
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);
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}
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pub const MMAP2_UNIT = 4096;
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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 = 0o40000;
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pub const NOFOLLOW = 0o100000;
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pub const CLOEXEC = 0o2000000;
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pub const ASYNC = 0o20000;
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pub const DIRECT = 0o200000;
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pub const LARGEFILE = 0o400000;
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pub const NOATIME = 0o1000000;
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pub const PATH = 0o10000000;
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pub const TMPFILE = 0o20040000;
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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 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 GETLK = 12;
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pub const SETLK = 13;
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pub const SETLKW = 14;
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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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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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};
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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 UN = 8;
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pub const NB = 4;
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};
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pub const MAP = struct {
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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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};
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pub const HWCAP = struct {
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pub const SWP = 1 << 0;
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pub const HALF = 1 << 1;
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pub const THUMB = 1 << 2;
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pub const @"26BIT" = 1 << 3;
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pub const FAST_MULT = 1 << 4;
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pub const FPA = 1 << 5;
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pub const VFP = 1 << 6;
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pub const EDSP = 1 << 7;
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pub const JAVA = 1 << 8;
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pub const IWMMXT = 1 << 9;
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pub const CRUNCH = 1 << 10;
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pub const THUMBEE = 1 << 11;
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pub const NEON = 1 << 12;
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pub const VFPv3 = 1 << 13;
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pub const VFPv3D16 = 1 << 14;
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pub const TLS = 1 << 15;
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pub const VFPv4 = 1 << 16;
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pub const IDIVA = 1 << 17;
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pub const IDIVT = 1 << 18;
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pub const VFPD32 = 1 << 19;
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pub const IDIV = IDIVA | IDIVT;
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pub const LPAE = 1 << 20;
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pub const EVTSTRM = 1 << 21;
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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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__pad0: [4]u8,
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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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__unused: [4]u8,
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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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control: ?*anyopaque,
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controllen: socklen_t,
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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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control: ?*const anyopaque,
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controllen: socklen_t,
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flags: i32,
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};
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pub const blksize_t = i32;
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pub const nlink_t = u32;
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pub const time_t = isize;
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pub const mode_t = u32;
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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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pub const blkcnt_t = i64;
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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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__dev_padding: u32,
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__ino_truncated: u32,
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mode: mode_t,
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nlink: nlink_t,
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uid: uid_t,
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gid: gid_t,
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rdev: dev_t,
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__rdev_padding: u32,
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size: off_t,
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blksize: blksize_t,
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blocks: blkcnt_t,
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atim: timespec,
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mtim: timespec,
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ctim: timespec,
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ino: ino_t,
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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: i32,
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tv_usec: i32,
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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 mcontext_t = extern struct {
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trap_no: usize,
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error_code: usize,
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oldmask: usize,
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arm_r0: usize,
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arm_r1: usize,
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arm_r2: usize,
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arm_r3: usize,
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arm_r4: usize,
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arm_r5: usize,
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arm_r6: usize,
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arm_r7: usize,
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arm_r8: usize,
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arm_r9: usize,
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arm_r10: usize,
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arm_fp: usize,
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arm_ip: usize,
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arm_sp: usize,
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arm_lr: usize,
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arm_pc: usize,
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arm_cpsr: usize,
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fault_address: usize,
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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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regspace: [64]u64,
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};
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pub const Elf_Symndx = u32;
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