mirror of
https://github.com/ziglang/zig.git
synced 2025-12-07 14:53:08 +00:00
078aa5f7b2
On Linux, locking fails with EAGAIN (vs. EACCES on other systems). This commit also adds FcntlErrors for EDEADLK and ENOLCK.
755 lines
16 KiB
Zig
755 lines
16 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 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: fn (arg: usize) callconv(.C) u8,
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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 SYS = enum(usize) {
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restart_syscall = 0,
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exit = 1,
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fork = 2,
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read = 3,
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write = 4,
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open = 5,
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close = 6,
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creat = 8,
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link = 9,
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unlink = 10,
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execve = 11,
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chdir = 12,
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mknod = 14,
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chmod = 15,
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lchown = 16,
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lseek = 19,
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getpid = 20,
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mount = 21,
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setuid = 23,
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getuid = 24,
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ptrace = 26,
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pause = 29,
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access = 33,
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nice = 34,
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sync = 36,
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kill = 37,
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rename = 38,
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mkdir = 39,
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rmdir = 40,
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dup = 41,
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pipe = 42,
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times = 43,
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brk = 45,
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setgid = 46,
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getgid = 47,
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geteuid = 49,
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getegid = 50,
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acct = 51,
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umount2 = 52,
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ioctl = 54,
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fcntl = 55,
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setpgid = 57,
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umask = 60,
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chroot = 61,
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ustat = 62,
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dup2 = 63,
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getppid = 64,
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getpgrp = 65,
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setsid = 66,
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sigaction = 67,
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setreuid = 70,
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setregid = 71,
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sigsuspend = 72,
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sigpending = 73,
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sethostname = 74,
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setrlimit = 75,
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getrusage = 77,
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gettimeofday = 78,
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settimeofday = 79,
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getgroups = 80,
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setgroups = 81,
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symlink = 83,
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readlink = 85,
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uselib = 86,
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swapon = 87,
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reboot = 88,
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munmap = 91,
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truncate = 92,
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ftruncate = 93,
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fchmod = 94,
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fchown = 95,
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getpriority = 96,
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setpriority = 97,
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statfs = 99,
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fstatfs = 100,
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syslog = 103,
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setitimer = 104,
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getitimer = 105,
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stat = 106,
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lstat = 107,
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fstat = 108,
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vhangup = 111,
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wait4 = 114,
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swapoff = 115,
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sysinfo = 116,
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fsync = 118,
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sigreturn = 119,
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clone = 120,
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setdomainname = 121,
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uname = 122,
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adjtimex = 124,
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mprotect = 125,
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sigprocmask = 126,
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init_module = 128,
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delete_module = 129,
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quotactl = 131,
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getpgid = 132,
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fchdir = 133,
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bdflush = 134,
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sysfs = 135,
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personality = 136,
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setfsuid = 138,
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setfsgid = 139,
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_llseek = 140,
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getdents = 141,
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_newselect = 142,
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flock = 143,
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msync = 144,
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readv = 145,
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writev = 146,
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getsid = 147,
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fdatasync = 148,
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_sysctl = 149,
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mlock = 150,
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munlock = 151,
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mlockall = 152,
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munlockall = 153,
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sched_setparam = 154,
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sched_getparam = 155,
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sched_setscheduler = 156,
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sched_getscheduler = 157,
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sched_yield = 158,
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sched_get_priority_max = 159,
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sched_get_priority_min = 160,
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sched_rr_get_interval = 161,
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nanosleep = 162,
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mremap = 163,
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setresuid = 164,
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getresuid = 165,
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poll = 168,
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nfsservctl = 169,
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setresgid = 170,
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getresgid = 171,
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prctl = 172,
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rt_sigreturn = 173,
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rt_sigaction = 174,
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rt_sigprocmask = 175,
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rt_sigpending = 176,
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rt_sigtimedwait = 177,
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rt_sigqueueinfo = 178,
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rt_sigsuspend = 179,
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pread64 = 180,
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pwrite64 = 181,
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chown = 182,
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getcwd = 183,
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capget = 184,
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capset = 185,
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sigaltstack = 186,
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sendfile = 187,
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vfork = 190,
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ugetrlimit = 191,
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mmap2 = 192,
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truncate64 = 193,
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ftruncate64 = 194,
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stat64 = 195,
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lstat64 = 196,
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fstat64 = 197,
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lchown32 = 198,
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getuid32 = 199,
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getgid32 = 200,
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geteuid32 = 201,
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getegid32 = 202,
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setreuid32 = 203,
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setregid32 = 204,
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getgroups32 = 205,
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setgroups32 = 206,
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fchown32 = 207,
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setresuid32 = 208,
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getresuid32 = 209,
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setresgid32 = 210,
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getresgid32 = 211,
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chown32 = 212,
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setuid32 = 213,
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setgid32 = 214,
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setfsuid32 = 215,
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setfsgid32 = 216,
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getdents64 = 217,
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pivot_root = 218,
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mincore = 219,
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madvise = 220,
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fcntl64 = 221,
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gettid = 224,
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readahead = 225,
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setxattr = 226,
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lsetxattr = 227,
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fsetxattr = 228,
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getxattr = 229,
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lgetxattr = 230,
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fgetxattr = 231,
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listxattr = 232,
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llistxattr = 233,
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flistxattr = 234,
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removexattr = 235,
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lremovexattr = 236,
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fremovexattr = 237,
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tkill = 238,
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sendfile64 = 239,
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futex = 240,
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sched_setaffinity = 241,
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sched_getaffinity = 242,
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io_setup = 243,
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io_destroy = 244,
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io_getevents = 245,
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io_submit = 246,
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io_cancel = 247,
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exit_group = 248,
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lookup_dcookie = 249,
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epoll_create = 250,
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epoll_ctl = 251,
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epoll_wait = 252,
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remap_file_pages = 253,
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set_tid_address = 256,
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timer_create = 257,
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timer_settime = 258,
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timer_gettime = 259,
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timer_getoverrun = 260,
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timer_delete = 261,
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clock_settime = 262,
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clock_gettime = 263,
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clock_getres = 264,
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clock_nanosleep = 265,
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statfs64 = 266,
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fstatfs64 = 267,
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tgkill = 268,
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utimes = 269,
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fadvise64_64 = 270,
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pciconfig_iobase = 271,
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pciconfig_read = 272,
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pciconfig_write = 273,
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mq_open = 274,
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mq_unlink = 275,
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mq_timedsend = 276,
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mq_timedreceive = 277,
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mq_notify = 278,
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mq_getsetattr = 279,
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waitid = 280,
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socket = 281,
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bind = 282,
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connect = 283,
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listen = 284,
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accept = 285,
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getsockname = 286,
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getpeername = 287,
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socketpair = 288,
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send = 289,
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sendto = 290,
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recv = 291,
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recvfrom = 292,
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shutdown = 293,
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setsockopt = 294,
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getsockopt = 295,
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sendmsg = 296,
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recvmsg = 297,
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semop = 298,
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semget = 299,
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semctl = 300,
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msgsnd = 301,
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msgrcv = 302,
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msgget = 303,
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msgctl = 304,
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shmat = 305,
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shmdt = 306,
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shmget = 307,
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shmctl = 308,
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add_key = 309,
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request_key = 310,
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keyctl = 311,
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semtimedop = 312,
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vserver = 313,
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ioprio_set = 314,
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ioprio_get = 315,
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inotify_init = 316,
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inotify_add_watch = 317,
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inotify_rm_watch = 318,
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mbind = 319,
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get_mempolicy = 320,
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set_mempolicy = 321,
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openat = 322,
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mkdirat = 323,
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mknodat = 324,
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fchownat = 325,
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futimesat = 326,
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fstatat64 = 327,
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unlinkat = 328,
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renameat = 329,
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linkat = 330,
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symlinkat = 331,
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readlinkat = 332,
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fchmodat = 333,
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faccessat = 334,
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pselect6 = 335,
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ppoll = 336,
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unshare = 337,
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set_robust_list = 338,
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get_robust_list = 339,
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splice = 340,
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sync_file_range = 341,
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tee = 342,
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vmsplice = 343,
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move_pages = 344,
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getcpu = 345,
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epoll_pwait = 346,
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kexec_load = 347,
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utimensat = 348,
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signalfd = 349,
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timerfd_create = 350,
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eventfd = 351,
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fallocate = 352,
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timerfd_settime = 353,
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timerfd_gettime = 354,
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signalfd4 = 355,
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eventfd2 = 356,
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epoll_create1 = 357,
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dup3 = 358,
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pipe2 = 359,
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inotify_init1 = 360,
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preadv = 361,
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pwritev = 362,
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rt_tgsigqueueinfo = 363,
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perf_event_open = 364,
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recvmmsg = 365,
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accept4 = 366,
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fanotify_init = 367,
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fanotify_mark = 368,
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prlimit64 = 369,
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name_to_handle_at = 370,
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open_by_handle_at = 371,
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clock_adjtime = 372,
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syncfs = 373,
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sendmmsg = 374,
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setns = 375,
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process_vm_readv = 376,
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process_vm_writev = 377,
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kcmp = 378,
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finit_module = 379,
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sched_setattr = 380,
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sched_getattr = 381,
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renameat2 = 382,
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seccomp = 383,
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getrandom = 384,
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memfd_create = 385,
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bpf = 386,
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execveat = 387,
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userfaultfd = 388,
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membarrier = 389,
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mlock2 = 390,
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copy_file_range = 391,
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preadv2 = 392,
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pwritev2 = 393,
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pkey_mprotect = 394,
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pkey_alloc = 395,
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pkey_free = 396,
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statx = 397,
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rseq = 398,
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io_pgetevents = 399,
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migrate_pages = 400,
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kexec_file_load = 401,
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clock_gettime64 = 403,
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clock_settime64 = 404,
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clock_adjtime64 = 405,
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clock_getres_time64 = 406,
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clock_nanosleep_time64 = 407,
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timer_gettime64 = 408,
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timer_settime64 = 409,
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timerfd_gettime64 = 410,
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timerfd_settime64 = 411,
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utimensat_time64 = 412,
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pselect6_time64 = 413,
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ppoll_time64 = 414,
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io_pgetevents_time64 = 416,
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recvmmsg_time64 = 417,
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mq_timedsend_time64 = 418,
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mq_timedreceive_time64 = 419,
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semtimedop_time64 = 420,
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rt_sigtimedwait_time64 = 421,
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futex_time64 = 422,
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sched_rr_get_interval_time64 = 423,
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pidfd_send_signal = 424,
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io_uring_setup = 425,
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io_uring_enter = 426,
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io_uring_register = 427,
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open_tree = 428,
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move_mount = 429,
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fsopen = 430,
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fsconfig = 431,
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fsmount = 432,
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fspick = 433,
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pidfd_open = 434,
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clone3 = 435,
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close_range = 436,
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openat2 = 437,
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pidfd_getfd = 438,
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faccessat2 = 439,
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process_madvise = 440,
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epoll_pwait2 = 441,
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mount_setattr = 442,
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landlock_create_ruleset = 444,
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landlock_add_rule = 445,
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landlock_restrict_self = 446,
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breakpoint = 0x0f0001,
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cacheflush = 0x0f0002,
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usr26 = 0x0f0003,
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usr32 = 0x0f0004,
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set_tls = 0x0f0005,
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get_tls = 0x0f0006,
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_,
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};
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pub const MMAP2_UNIT = 4096;
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|
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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;
|
|
pub const NONBLOCK = 0o4000;
|
|
pub const DSYNC = 0o10000;
|
|
pub const SYNC = 0o4010000;
|
|
pub const RSYNC = 0o4010000;
|
|
pub const DIRECTORY = 0o40000;
|
|
pub const NOFOLLOW = 0o100000;
|
|
pub const CLOEXEC = 0o2000000;
|
|
|
|
pub const ASYNC = 0o20000;
|
|
pub const DIRECT = 0o200000;
|
|
pub const LARGEFILE = 0o400000;
|
|
pub const NOATIME = 0o1000000;
|
|
pub const PATH = 0o10000000;
|
|
pub const TMPFILE = 0o20040000;
|
|
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 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 RDLCK = 0;
|
|
pub const WRLCK = 1;
|
|
pub const UNLCK = 2;
|
|
|
|
pub const SETOWN_EX = 15;
|
|
pub const GETOWN_EX = 16;
|
|
|
|
pub const GETOWNER_UIDS = 17;
|
|
};
|
|
|
|
pub const LOCK = struct {
|
|
pub const SH = 1;
|
|
pub const EX = 2;
|
|
pub const UN = 8;
|
|
pub const NB = 4;
|
|
};
|
|
|
|
pub const MAP = struct {
|
|
/// 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 HWCAP = struct {
|
|
pub const SWP = 1 << 0;
|
|
pub const HALF = 1 << 1;
|
|
pub const THUMB = 1 << 2;
|
|
pub const @"26BIT" = 1 << 3;
|
|
pub const FAST_MULT = 1 << 4;
|
|
pub const FPA = 1 << 5;
|
|
pub const VFP = 1 << 6;
|
|
pub const EDSP = 1 << 7;
|
|
pub const JAVA = 1 << 8;
|
|
pub const IWMMXT = 1 << 9;
|
|
pub const CRUNCH = 1 << 10;
|
|
pub const THUMBEE = 1 << 11;
|
|
pub const NEON = 1 << 12;
|
|
pub const VFPv3 = 1 << 13;
|
|
pub const VFPv3D16 = 1 << 14;
|
|
pub const TLS = 1 << 15;
|
|
pub const VFPv4 = 1 << 16;
|
|
pub const IDIVA = 1 << 17;
|
|
pub const IDIVT = 1 << 18;
|
|
pub const VFPD32 = 1 << 19;
|
|
pub const IDIV = IDIVA | IDIVT;
|
|
pub const LPAE = 1 << 20;
|
|
pub const EVTSTRM = 1 << 21;
|
|
};
|
|
|
|
pub const Flock = extern struct {
|
|
type: i16,
|
|
whence: i16,
|
|
__pad0: [4]u8,
|
|
start: off_t,
|
|
len: off_t,
|
|
pid: pid_t,
|
|
__unused: [4]u8,
|
|
};
|
|
|
|
pub const msghdr = extern struct {
|
|
msg_name: ?*sockaddr,
|
|
msg_namelen: socklen_t,
|
|
msg_iov: [*]iovec,
|
|
msg_iovlen: i32,
|
|
msg_control: ?*anyopaque,
|
|
msg_controllen: socklen_t,
|
|
msg_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: ?*anyopaque,
|
|
msg_controllen: socklen_t,
|
|
msg_flags: i32,
|
|
};
|
|
|
|
pub const blksize_t = i32;
|
|
pub const nlink_t = u32;
|
|
pub const time_t = isize;
|
|
pub const mode_t = u32;
|
|
pub const off_t = i64;
|
|
pub const ino_t = u64;
|
|
pub const dev_t = u64;
|
|
pub const blkcnt_t = i64;
|
|
|
|
// The `stat` definition used by the Linux kernel.
|
|
pub const Stat = extern struct {
|
|
dev: dev_t,
|
|
__dev_padding: u32,
|
|
__ino_truncated: u32,
|
|
mode: mode_t,
|
|
nlink: nlink_t,
|
|
uid: uid_t,
|
|
gid: gid_t,
|
|
rdev: dev_t,
|
|
__rdev_padding: u32,
|
|
size: off_t,
|
|
blksize: blksize_t,
|
|
blocks: blkcnt_t,
|
|
atim: timespec,
|
|
mtim: timespec,
|
|
ctim: timespec,
|
|
ino: ino_t,
|
|
|
|
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;
|
|
}
|
|
};
|
|
|
|
pub const timeval = extern struct {
|
|
tv_sec: i32,
|
|
tv_usec: i32,
|
|
};
|
|
|
|
pub const timezone = extern struct {
|
|
tz_minuteswest: i32,
|
|
tz_dsttime: i32,
|
|
};
|
|
|
|
pub const mcontext_t = extern struct {
|
|
trap_no: usize,
|
|
error_code: usize,
|
|
oldmask: usize,
|
|
arm_r0: usize,
|
|
arm_r1: usize,
|
|
arm_r2: usize,
|
|
arm_r3: usize,
|
|
arm_r4: usize,
|
|
arm_r5: usize,
|
|
arm_r6: usize,
|
|
arm_r7: usize,
|
|
arm_r8: usize,
|
|
arm_r9: usize,
|
|
arm_r10: usize,
|
|
arm_fp: usize,
|
|
arm_ip: usize,
|
|
arm_sp: usize,
|
|
arm_lr: usize,
|
|
arm_pc: usize,
|
|
arm_cpsr: usize,
|
|
fault_address: usize,
|
|
};
|
|
|
|
pub const ucontext_t = extern struct {
|
|
flags: usize,
|
|
link: *ucontext_t,
|
|
stack: stack_t,
|
|
mcontext: mcontext_t,
|
|
sigmask: sigset_t,
|
|
regspace: [64]u64,
|
|
};
|
|
|
|
pub const Elf_Symndx = u32;
|