Merge branch 'master' into translate-c-userland

3 files changed, 1303 insertions, 0 deletions

diff --git a/std/os/bits/linux/arm64.zig b/std/os/bits/linux/arm64.zig
new file mode 100644
index 0000000000..8966df30d2
--- /dev/null
+++ b/std/os/bits/linux/arm64.zig
@@ -0,0 +1,405 @@
+// arm64-specific declarations that are intended to be imported into the POSIX namespace.
+// This does include Linux-only APIs.
+
+const std = @import("../../std.zig");
+const linux = std.os.linux;
+const socklen_t = linux.socklen_t;
+const iovec = linux.iovec;
+const iovec_const = linux.iovec_const;
+
+pub const SYS_io_setup = 0;
+pub const SYS_io_destroy = 1;
+pub const SYS_io_submit = 2;
+pub const SYS_io_cancel = 3;
+pub const SYS_io_getevents = 4;
+pub const SYS_setxattr = 5;
+pub const SYS_lsetxattr = 6;
+pub const SYS_fsetxattr = 7;
+pub const SYS_getxattr = 8;
+pub const SYS_lgetxattr = 9;
+pub const SYS_fgetxattr = 10;
+pub const SYS_listxattr = 11;
+pub const SYS_llistxattr = 12;
+pub const SYS_flistxattr = 13;
+pub const SYS_removexattr = 14;
+pub const SYS_lremovexattr = 15;
+pub const SYS_fremovexattr = 16;
+pub const SYS_getcwd = 17;
+pub const SYS_lookup_dcookie = 18;
+pub const SYS_eventfd2 = 19;
+pub const SYS_epoll_create1 = 20;
+pub const SYS_epoll_ctl = 21;
+pub const SYS_epoll_pwait = 22;
+pub const SYS_dup = 23;
+pub const SYS_dup3 = 24;
+pub const SYS_fcntl = 25;
+pub const SYS_inotify_init1 = 26;
+pub const SYS_inotify_add_watch = 27;
+pub const SYS_inotify_rm_watch = 28;
+pub const SYS_ioctl = 29;
+pub const SYS_ioprio_set = 30;
+pub const SYS_ioprio_get = 31;
+pub const SYS_flock = 32;
+pub const SYS_mknodat = 33;
+pub const SYS_mkdirat = 34;
+pub const SYS_unlinkat = 35;
+pub const SYS_symlinkat = 36;
+pub const SYS_linkat = 37;
+pub const SYS_renameat = 38;
+pub const SYS_umount2 = 39;
+pub const SYS_mount = 40;
+pub const SYS_pivot_root = 41;
+pub const SYS_nfsservctl = 42;
+pub const SYS_statfs = 43;
+pub const SYS_fstatfs = 44;
+pub const SYS_truncate = 45;
+pub const SYS_ftruncate = 46;
+pub const SYS_fallocate = 47;
+pub const SYS_faccessat = 48;
+pub const SYS_chdir = 49;
+pub const SYS_fchdir = 50;
+pub const SYS_chroot = 51;
+pub const SYS_fchmod = 52;
+pub const SYS_fchmodat = 53;
+pub const SYS_fchownat = 54;
+pub const SYS_fchown = 55;
+pub const SYS_openat = 56;
+pub const SYS_close = 57;
+pub const SYS_vhangup = 58;
+pub const SYS_pipe2 = 59;
+pub const SYS_quotactl = 60;
+pub const SYS_getdents64 = 61;
+pub const SYS_lseek = 62;
+pub const SYS_read = 63;
+pub const SYS_write = 64;
+pub const SYS_readv = 65;
+pub const SYS_writev = 66;
+pub const SYS_pread64 = 67;
+pub const SYS_pwrite64 = 68;
+pub const SYS_preadv = 69;
+pub const SYS_pwritev = 70;
+pub const SYS_pselect6 = 72;
+pub const SYS_ppoll = 73;
+pub const SYS_signalfd4 = 74;
+pub const SYS_vmsplice = 75;
+pub const SYS_splice = 76;
+pub const SYS_tee = 77;
+pub const SYS_readlinkat = 78;
+pub const SYS_fstatat = 79;
+pub const SYS_fstat = 80;
+pub const SYS_sync = 81;
+pub const SYS_fsync = 82;
+pub const SYS_fdatasync = 83;
+pub const SYS_sync_file_range2 = 84;
+pub const SYS_sync_file_range = 84;
+pub const SYS_timerfd_create = 85;
+pub const SYS_timerfd_settime = 86;
+pub const SYS_timerfd_gettime = 87;
+pub const SYS_utimensat = 88;
+pub const SYS_acct = 89;
+pub const SYS_capget = 90;
+pub const SYS_capset = 91;
+pub const SYS_personality = 92;
+pub const SYS_exit = 93;
+pub const SYS_exit_group = 94;
+pub const SYS_waitid = 95;
+pub const SYS_set_tid_address = 96;
+pub const SYS_unshare = 97;
+pub const SYS_futex = 98;
+pub const SYS_set_robust_list = 99;
+pub const SYS_get_robust_list = 100;
+pub const SYS_nanosleep = 101;
+pub const SYS_getitimer = 102;
+pub const SYS_setitimer = 103;
+pub const SYS_kexec_load = 104;
+pub const SYS_init_module = 105;
+pub const SYS_delete_module = 106;
+pub const SYS_timer_create = 107;
+pub const SYS_timer_gettime = 108;
+pub const SYS_timer_getoverrun = 109;
+pub const SYS_timer_settime = 110;
+pub const SYS_timer_delete = 111;
+pub const SYS_clock_settime = 112;
+pub const SYS_clock_gettime = 113;
+pub const SYS_clock_getres = 114;
+pub const SYS_clock_nanosleep = 115;
+pub const SYS_syslog = 116;
+pub const SYS_ptrace = 117;
+pub const SYS_sched_setparam = 118;
+pub const SYS_sched_setscheduler = 119;
+pub const SYS_sched_getscheduler = 120;
+pub const SYS_sched_getparam = 121;
+pub const SYS_sched_setaffinity = 122;
+pub const SYS_sched_getaffinity = 123;
+pub const SYS_sched_yield = 124;
+pub const SYS_sched_get_priority_max = 125;
+pub const SYS_sched_get_priority_min = 126;
+pub const SYS_sched_rr_get_interval = 127;
+pub const SYS_restart_syscall = 128;
+pub const SYS_kill = 129;
+pub const SYS_tkill = 130;
+pub const SYS_tgkill = 131;
+pub const SYS_sigaltstack = 132;
+pub const SYS_rt_sigsuspend = 133;
+pub const SYS_rt_sigaction = 134;
+pub const SYS_rt_sigprocmask = 135;
+pub const SYS_rt_sigpending = 136;
+pub const SYS_rt_sigtimedwait = 137;
+pub const SYS_rt_sigqueueinfo = 138;
+pub const SYS_rt_sigreturn = 139;
+pub const SYS_setpriority = 140;
+pub const SYS_getpriority = 141;
+pub const SYS_reboot = 142;
+pub const SYS_setregid = 143;
+pub const SYS_setgid = 144;
+pub const SYS_setreuid = 145;
+pub const SYS_setuid = 146;
+pub const SYS_setresuid = 147;
+pub const SYS_getresuid = 148;
+pub const SYS_setresgid = 149;
+pub const SYS_getresgid = 150;
+pub const SYS_setfsuid = 151;
+pub const SYS_setfsgid = 152;
+pub const SYS_times = 153;
+pub const SYS_setpgid = 154;
+pub const SYS_getpgid = 155;
+pub const SYS_getsid = 156;
+pub const SYS_setsid = 157;
+pub const SYS_getgroups = 158;
+pub const SYS_setgroups = 159;
+pub const SYS_uname = 160;
+pub const SYS_sethostname = 161;
+pub const SYS_setdomainname = 162;
+pub const SYS_getrlimit = 163;
+pub const SYS_setrlimit = 164;
+pub const SYS_getrusage = 165;
+pub const SYS_umask = 166;
+pub const SYS_prctl = 167;
+pub const SYS_getcpu = 168;
+pub const SYS_gettimeofday = 169;
+pub const SYS_settimeofday = 170;
+pub const SYS_adjtimex = 171;
+pub const SYS_getpid = 172;
+pub const SYS_getppid = 173;
+pub const SYS_getuid = 174;
+pub const SYS_geteuid = 175;
+pub const SYS_getgid = 176;
+pub const SYS_getegid = 177;
+pub const SYS_gettid = 178;
+pub const SYS_sysinfo = 179;
+pub const SYS_mq_open = 180;
+pub const SYS_mq_unlink = 181;
+pub const SYS_mq_timedsend = 182;
+pub const SYS_mq_timedreceive = 183;
+pub const SYS_mq_notify = 184;
+pub const SYS_mq_getsetattr = 185;
+pub const SYS_msgget = 186;
+pub const SYS_msgctl = 187;
+pub const SYS_msgrcv = 188;
+pub const SYS_msgsnd = 189;
+pub const SYS_semget = 190;
+pub const SYS_semctl = 191;
+pub const SYS_semtimedop = 192;
+pub const SYS_semop = 193;
+pub const SYS_shmget = 194;
+pub const SYS_shmctl = 195;
+pub const SYS_shmat = 196;
+pub const SYS_shmdt = 197;
+pub const SYS_socket = 198;
+pub const SYS_socketpair = 199;
+pub const SYS_bind = 200;
+pub const SYS_listen = 201;
+pub const SYS_accept = 202;
+pub const SYS_connect = 203;
+pub const SYS_getsockname = 204;
+pub const SYS_getpeername = 205;
+pub const SYS_sendto = 206;
+pub const SYS_recvfrom = 207;
+pub const SYS_setsockopt = 208;
+pub const SYS_getsockopt = 209;
+pub const SYS_shutdown = 210;
+pub const SYS_sendmsg = 211;
+pub const SYS_recvmsg = 212;
+pub const SYS_readahead = 213;
+pub const SYS_brk = 214;
+pub const SYS_munmap = 215;
+pub const SYS_mremap = 216;
+pub const SYS_add_key = 217;
+pub const SYS_request_key = 218;
+pub const SYS_keyctl = 219;
+pub const SYS_clone = 220;
+pub const SYS_execve = 221;
+pub const SYS_mmap = 222;
+pub const SYS_fadvise64 = 223;
+pub const SYS_swapon = 224;
+pub const SYS_swapoff = 225;
+pub const SYS_mprotect = 226;
+pub const SYS_msync = 227;
+pub const SYS_mlock = 228;
+pub const SYS_munlock = 229;
+pub const SYS_mlockall = 230;
+pub const SYS_munlockall = 231;
+pub const SYS_mincore = 232;
+pub const SYS_madvise = 233;
+pub const SYS_remap_file_pages = 234;
+pub const SYS_mbind = 235;
+pub const SYS_get_mempolicy = 236;
+pub const SYS_set_mempolicy = 237;
+pub const SYS_migrate_pages = 238;
+pub const SYS_move_pages = 239;
+pub const SYS_rt_tgsigqueueinfo = 240;
+pub const SYS_perf_event_open = 241;
+pub const SYS_accept4 = 242;
+pub const SYS_recvmmsg = 243;
+pub const SYS_arch_specific_syscall = 244;
+pub const SYS_wait4 = 260;
+pub const SYS_prlimit64 = 261;
+pub const SYS_fanotify_init = 262;
+pub const SYS_fanotify_mark = 263;
+pub const SYS_clock_adjtime = 266;
+pub const SYS_syncfs = 267;
+pub const SYS_setns = 268;
+pub const SYS_sendmmsg = 269;
+pub const SYS_process_vm_readv = 270;
+pub const SYS_process_vm_writev = 271;
+pub const SYS_kcmp = 272;
+pub const SYS_finit_module = 273;
+pub const SYS_sched_setattr = 274;
+pub const SYS_sched_getattr = 275;
+pub const SYS_renameat2 = 276;
+pub const SYS_seccomp = 277;
+pub const SYS_getrandom = 278;
+pub const SYS_memfd_create = 279;
+pub const SYS_bpf = 280;
+pub const SYS_execveat = 281;
+pub const SYS_userfaultfd = 282;
+pub const SYS_membarrier = 283;
+pub const SYS_mlock2 = 284;
+pub const SYS_copy_file_range = 285;
+pub const SYS_preadv2 = 286;
+pub const SYS_pwritev2 = 287;
+pub const SYS_pkey_mprotect = 288;
+pub const SYS_pkey_alloc = 289;
+pub const SYS_pkey_free = 290;
+pub const SYS_statx = 291;
+pub const SYS_io_pgetevents = 292;
+pub const SYS_rseq = 293;
+pub const SYS_kexec_file_load = 294;
+pub const SYS_pidfd_send_signal = 424;
+pub const SYS_io_uring_setup = 425;
+pub const SYS_io_uring_enter = 426;
+pub const SYS_io_uring_register = 427;
+
+pub const O_CREAT = 0o100;
+pub const O_EXCL = 0o200;
+pub const O_NOCTTY = 0o400;
+pub const O_TRUNC = 0o1000;
+pub const O_APPEND = 0o2000;
+pub const O_NONBLOCK = 0o4000;
+pub const O_DSYNC = 0o10000;
+pub const O_SYNC = 0o4010000;
+pub const O_RSYNC = 0o4010000;
+pub const O_DIRECTORY = 0o200000;
+pub const O_NOFOLLOW = 0o400000;
+pub const O_CLOEXEC = 0o2000000;
+
+pub const O_ASYNC = 0o20000;
+pub const O_DIRECT = 0o40000;
+pub const O_LARGEFILE = 0;
+pub const O_NOATIME = 0o1000000;
+pub const O_PATH = 0o10000000;
+pub const O_TMPFILE = 0o20200000;
+pub const O_NDELAY = O_NONBLOCK;
+
+pub const F_DUPFD = 0;
+pub const F_GETFD = 1;
+pub const F_SETFD = 2;
+pub const F_GETFL = 3;
+pub const F_SETFL = 4;
+
+pub const F_SETOWN = 8;
+pub const F_GETOWN = 9;
+pub const F_SETSIG = 10;
+pub const F_GETSIG = 11;
+
+pub const F_GETLK = 5;
+pub const F_SETLK = 6;
+pub const F_SETLKW = 7;
+
+pub const F_SETOWN_EX = 15;
+pub const F_GETOWN_EX = 16;
+
+pub const F_GETOWNER_UIDS = 17;
+
+pub const AT_FDCWD = -100;
+pub const AT_SYMLINK_NOFOLLOW = 0x100;
+pub const AT_REMOVEDIR = 0x200;
+pub const AT_SYMLINK_FOLLOW = 0x400;
+pub const AT_NO_AUTOMOUNT = 0x800;
+pub const AT_EMPTY_PATH = 0x1000;
+
+pub const VDSO_USEFUL = true;
+pub const VDSO_CGT_SYM = "__kernel_clock_gettime";
+pub const VDSO_CGT_VER = "LINUX_2.6.39";
+
+pub const msghdr = extern struct {
+    msg_name: ?*sockaddr,
+    msg_namelen: socklen_t,
+    msg_iov: [*]iovec,
+    msg_iovlen: i32,
+    __pad1: i32,
+    msg_control: ?*c_void,
+    msg_controllen: socklen_t,
+    __pad2: 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,
+    __pad1: i32,
+    msg_control: ?*c_void,
+    msg_controllen: socklen_t,
+    __pad2: socklen_t,
+    msg_flags: i32,
+};
+
+/// Renamed to Stat to not conflict with the stat function.
+pub const Stat = extern struct {
+    dev: u64,
+    ino: u64,
+    nlink: usize,
+
+    mode: u32,
+    uid: u32,
+    gid: u32,
+    __pad0: u32,
+    rdev: u64,
+    size: i64,
+    blksize: isize,
+    blocks: i64,
+
+    atim: timespec,
+    mtim: timespec,
+    ctim: timespec,
+    __unused: [3]isize,
+};
+
+pub const timespec = extern struct {
+    tv_sec: isize,
+    tv_nsec: isize,
+};
+
+pub const timeval = extern struct {
+    tv_sec: isize,
+    tv_usec: isize,
+};
+
+pub const timezone = extern struct {
+    tz_minuteswest: i32,
+    tz_dsttime: i32,
+};
+
+pub const Elf_Symndx = u32;
diff --git a/std/os/bits/linux/errno.zig b/std/os/bits/linux/errno.zig
new file mode 100644
index 0000000000..741f76fdee
--- /dev/null
+++ b/std/os/bits/linux/errno.zig
@@ -0,0 +1,428 @@
+/// Operation not permitted
+pub const EPERM = 1;
+
+/// No such file or directory
+pub const ENOENT = 2;
+
+/// No such process
+pub const ESRCH = 3;
+
+/// Interrupted system call
+pub const EINTR = 4;
+
+/// I/O error
+pub const EIO = 5;
+
+/// No such device or address
+pub const ENXIO = 6;
+
+/// Arg list too long
+pub const E2BIG = 7;
+
+/// Exec format error
+pub const ENOEXEC = 8;
+
+/// Bad file number
+pub const EBADF = 9;
+
+/// No child processes
+pub const ECHILD = 10;
+
+/// Try again
+pub const EAGAIN = 11;
+
+/// Out of memory
+pub const ENOMEM = 12;
+
+/// Permission denied
+pub const EACCES = 13;
+
+/// Bad address
+pub const EFAULT = 14;
+
+/// Block device required
+pub const ENOTBLK = 15;
+
+/// Device or resource busy
+pub const EBUSY = 16;
+
+/// File exists
+pub const EEXIST = 17;
+
+/// Cross-device link
+pub const EXDEV = 18;
+
+/// No such device
+pub const ENODEV = 19;
+
+/// Not a directory
+pub const ENOTDIR = 20;
+
+/// Is a directory
+pub const EISDIR = 21;
+
+/// Invalid argument
+pub const EINVAL = 22;
+
+/// File table overflow
+pub const ENFILE = 23;
+
+/// Too many open files
+pub const EMFILE = 24;
+
+/// Not a typewriter
+pub const ENOTTY = 25;
+
+/// Text file busy
+pub const ETXTBSY = 26;
+
+/// File too large
+pub const EFBIG = 27;
+
+/// No space left on device
+pub const ENOSPC = 28;
+
+/// Illegal seek
+pub const ESPIPE = 29;
+
+/// Read-only file system
+pub const EROFS = 30;
+
+/// Too many links
+pub const EMLINK = 31;
+
+/// Broken pipe
+pub const EPIPE = 32;
+
+/// Math argument out of domain of func
+pub const EDOM = 33;
+
+/// Math result not representable
+pub const ERANGE = 34;
+
+/// Resource deadlock would occur
+pub const EDEADLK = 35;
+
+/// File name too long
+pub const ENAMETOOLONG = 36;
+
+/// No record locks available
+pub const ENOLCK = 37;
+
+/// Function not implemented
+pub const ENOSYS = 38;
+
+/// Directory not empty
+pub const ENOTEMPTY = 39;
+
+/// Too many symbolic links encountered
+pub const ELOOP = 40;
+
+/// Operation would block
+pub const EWOULDBLOCK = EAGAIN;
+
+/// No message of desired type
+pub const ENOMSG = 42;
+
+/// Identifier removed
+pub const EIDRM = 43;
+
+/// Channel number out of range
+pub const ECHRNG = 44;
+
+/// Level 2 not synchronized
+pub const EL2NSYNC = 45;
+
+/// Level 3 halted
+pub const EL3HLT = 46;
+
+/// Level 3 reset
+pub const EL3RST = 47;
+
+/// Link number out of range
+pub const ELNRNG = 48;
+
+/// Protocol driver not attached
+pub const EUNATCH = 49;
+
+/// No CSI structure available
+pub const ENOCSI = 50;
+
+/// Level 2 halted
+pub const EL2HLT = 51;
+
+/// Invalid exchange
+pub const EBADE = 52;
+
+/// Invalid request descriptor
+pub const EBADR = 53;
+
+/// Exchange full
+pub const EXFULL = 54;
+
+/// No anode
+pub const ENOANO = 55;
+
+/// Invalid request code
+pub const EBADRQC = 56;
+
+/// Invalid slot
+pub const EBADSLT = 57;
+
+/// Bad font file format
+pub const EBFONT = 59;
+
+/// Device not a stream
+pub const ENOSTR = 60;
+
+/// No data available
+pub const ENODATA = 61;
+
+/// Timer expired
+pub const ETIME = 62;
+
+/// Out of streams resources
+pub const ENOSR = 63;
+
+/// Machine is not on the network
+pub const ENONET = 64;
+
+/// Package not installed
+pub const ENOPKG = 65;
+
+/// Object is remote
+pub const EREMOTE = 66;
+
+/// Link has been severed
+pub const ENOLINK = 67;
+
+/// Advertise error
+pub const EADV = 68;
+
+/// Srmount error
+pub const ESRMNT = 69;
+
+/// Communication error on send
+pub const ECOMM = 70;
+
+/// Protocol error
+pub const EPROTO = 71;
+
+/// Multihop attempted
+pub const EMULTIHOP = 72;
+
+/// RFS specific error
+pub const EDOTDOT = 73;
+
+/// Not a data message
+pub const EBADMSG = 74;
+
+/// Value too large for defined data type
+pub const EOVERFLOW = 75;
+
+/// Name not unique on network
+pub const ENOTUNIQ = 76;
+
+/// File descriptor in bad state
+pub const EBADFD = 77;
+
+/// Remote address changed
+pub const EREMCHG = 78;
+
+/// Can not access a needed shared library
+pub const ELIBACC = 79;
+
+/// Accessing a corrupted shared library
+pub const ELIBBAD = 80;
+
+/// .lib section in a.out corrupted
+pub const ELIBSCN = 81;
+
+/// Attempting to link in too many shared libraries
+pub const ELIBMAX = 82;
+
+/// Cannot exec a shared library directly
+pub const ELIBEXEC = 83;
+
+/// Illegal byte sequence
+pub const EILSEQ = 84;
+
+/// Interrupted system call should be restarted
+pub const ERESTART = 85;
+
+/// Streams pipe error
+pub const ESTRPIPE = 86;
+
+/// Too many users
+pub const EUSERS = 87;
+
+/// Socket operation on non-socket
+pub const ENOTSOCK = 88;
+
+/// Destination address required
+pub const EDESTADDRREQ = 89;
+
+/// Message too long
+pub const EMSGSIZE = 90;
+
+/// Protocol wrong type for socket
+pub const EPROTOTYPE = 91;
+
+/// Protocol not available
+pub const ENOPROTOOPT = 92;
+
+/// Protocol not supported
+pub const EPROTONOSUPPORT = 93;
+
+/// Socket type not supported
+pub const ESOCKTNOSUPPORT = 94;
+
+/// Operation not supported on transport endpoint
+pub const EOPNOTSUPP = 95;
+pub const ENOTSUP = EOPNOTSUPP;
+
+/// Protocol family not supported
+pub const EPFNOSUPPORT = 96;
+
+/// Address family not supported by protocol
+pub const EAFNOSUPPORT = 97;
+
+/// Address already in use
+pub const EADDRINUSE = 98;
+
+/// Cannot assign requested address
+pub const EADDRNOTAVAIL = 99;
+
+/// Network is down
+pub const ENETDOWN = 100;
+
+/// Network is unreachable
+pub const ENETUNREACH = 101;
+
+/// Network dropped connection because of reset
+pub const ENETRESET = 102;
+
+/// Software caused connection abort
+pub const ECONNABORTED = 103;
+
+/// Connection reset by peer
+pub const ECONNRESET = 104;
+
+/// No buffer space available
+pub const ENOBUFS = 105;
+
+/// Transport endpoint is already connected
+pub const EISCONN = 106;
+
+/// Transport endpoint is not connected
+pub const ENOTCONN = 107;
+
+/// Cannot send after transport endpoint shutdown
+pub const ESHUTDOWN = 108;
+
+/// Too many references: cannot splice
+pub const ETOOMANYREFS = 109;
+
+/// Connection timed out
+pub const ETIMEDOUT = 110;
+
+/// Connection refused
+pub const ECONNREFUSED = 111;
+
+/// Host is down
+pub const EHOSTDOWN = 112;
+
+/// No route to host
+pub const EHOSTUNREACH = 113;
+
+/// Operation already in progress
+pub const EALREADY = 114;
+
+/// Operation now in progress
+pub const EINPROGRESS = 115;
+
+/// Stale NFS file handle
+pub const ESTALE = 116;
+
+/// Structure needs cleaning
+pub const EUCLEAN = 117;
+
+/// Not a XENIX named type file
+pub const ENOTNAM = 118;
+
+/// No XENIX semaphores available
+pub const ENAVAIL = 119;
+
+/// Is a named type file
+pub const EISNAM = 120;
+
+/// Remote I/O error
+pub const EREMOTEIO = 121;
+
+/// Quota exceeded
+pub const EDQUOT = 122;
+
+/// No medium found
+pub const ENOMEDIUM = 123;
+
+/// Wrong medium type
+pub const EMEDIUMTYPE = 124;
+
+// nameserver query return codes
+
+/// DNS server returned answer with no data
+pub const ENSROK = 0;
+
+/// DNS server returned answer with no data
+pub const ENSRNODATA = 160;
+
+/// DNS server claims query was misformatted
+pub const ENSRFORMERR = 161;
+
+/// DNS server returned general failure
+pub const ENSRSERVFAIL = 162;
+
+/// Domain name not found
+pub const ENSRNOTFOUND = 163;
+
+/// DNS server does not implement requested operation
+pub const ENSRNOTIMP = 164;
+
+/// DNS server refused query
+pub const ENSRREFUSED = 165;
+
+/// Misformatted DNS query
+pub const ENSRBADQUERY = 166;
+
+/// Misformatted domain name
+pub const ENSRBADNAME = 167;
+
+/// Unsupported address family
+pub const ENSRBADFAMILY = 168;
+
+/// Misformatted DNS reply
+pub const ENSRBADRESP = 169;
+
+/// Could not contact DNS servers
+pub const ENSRCONNREFUSED = 170;
+
+/// Timeout while contacting DNS servers
+pub const ENSRTIMEOUT = 171;
+
+/// End of file
+pub const ENSROF = 172;
+
+/// Error reading file
+pub const ENSRFILE = 173;
+
+/// Out of memory
+pub const ENSRNOMEM = 174;
+
+/// Application terminated lookup
+pub const ENSRDESTRUCTION = 175;
+
+/// Domain name is too long
+pub const ENSRQUERYDOMAINTOOLONG = 176;
+
+/// Domain name is too long
+pub const ENSRCNAMELOOP = 177;
diff --git a/std/os/bits/linux/x86_64.zig b/std/os/bits/linux/x86_64.zig
new file mode 100644
index 0000000000..12ac6b8d7a
--- /dev/null
+++ b/std/os/bits/linux/x86_64.zig
@@ -0,0 +1,470 @@
+// x86-64-specific declarations that are intended to be imported into the POSIX namespace.
+const std = @import("../../../std.zig");
+
+const linux = std.os.linux;
+const sockaddr = linux.sockaddr;
+const socklen_t = linux.socklen_t;
+const iovec = linux.iovec;
+const iovec_const = linux.iovec_const;
+
+pub const SYS_read = 0;
+pub const SYS_write = 1;
+pub const SYS_open = 2;
+pub const SYS_close = 3;
+pub const SYS_stat = 4;
+pub const SYS_fstat = 5;
+pub const SYS_lstat = 6;
+pub const SYS_poll = 7;
+pub const SYS_lseek = 8;
+pub const SYS_mmap = 9;
+pub const SYS_mprotect = 10;
+pub const SYS_munmap = 11;
+pub const SYS_brk = 12;
+pub const SYS_rt_sigaction = 13;
+pub const SYS_rt_sigprocmask = 14;
+pub const SYS_rt_sigreturn = 15;
+pub const SYS_ioctl = 16;
+pub const SYS_pread = 17;
+pub const SYS_pwrite = 18;
+pub const SYS_readv = 19;
+pub const SYS_writev = 20;
+pub const SYS_access = 21;
+pub const SYS_pipe = 22;
+pub const SYS_select = 23;
+pub const SYS_sched_yield = 24;
+pub const SYS_mremap = 25;
+pub const SYS_msync = 26;
+pub const SYS_mincore = 27;
+pub const SYS_madvise = 28;
+pub const SYS_shmget = 29;
+pub const SYS_shmat = 30;
+pub const SYS_shmctl = 31;
+pub const SYS_dup = 32;
+pub const SYS_dup2 = 33;
+pub const SYS_pause = 34;
+pub const SYS_nanosleep = 35;
+pub const SYS_getitimer = 36;
+pub const SYS_alarm = 37;
+pub const SYS_setitimer = 38;
+pub const SYS_getpid = 39;
+pub const SYS_sendfile = 40;
+pub const SYS_socket = 41;
+pub const SYS_connect = 42;
+pub const SYS_accept = 43;
+pub const SYS_sendto = 44;
+pub const SYS_recvfrom = 45;
+pub const SYS_sendmsg = 46;
+pub const SYS_recvmsg = 47;
+pub const SYS_shutdown = 48;
+pub const SYS_bind = 49;
+pub const SYS_listen = 50;
+pub const SYS_getsockname = 51;
+pub const SYS_getpeername = 52;
+pub const SYS_socketpair = 53;
+pub const SYS_setsockopt = 54;
+pub const SYS_getsockopt = 55;
+pub const SYS_clone = 56;
+pub const SYS_fork = 57;
+pub const SYS_vfork = 58;
+pub const SYS_execve = 59;
+pub const SYS_exit = 60;
+pub const SYS_wait4 = 61;
+pub const SYS_kill = 62;
+pub const SYS_uname = 63;
+pub const SYS_semget = 64;
+pub const SYS_semop = 65;
+pub const SYS_semctl = 66;
+pub const SYS_shmdt = 67;
+pub const SYS_msgget = 68;
+pub const SYS_msgsnd = 69;
+pub const SYS_msgrcv = 70;
+pub const SYS_msgctl = 71;
+pub const SYS_fcntl = 72;
+pub const SYS_flock = 73;
+pub const SYS_fsync = 74;
+pub const SYS_fdatasync = 75;
+pub const SYS_truncate = 76;
+pub const SYS_ftruncate = 77;
+pub const SYS_getdents = 78;
+pub const SYS_getcwd = 79;
+pub const SYS_chdir = 80;
+pub const SYS_fchdir = 81;
+pub const SYS_rename = 82;
+pub const SYS_mkdir = 83;
+pub const SYS_rmdir = 84;
+pub const SYS_creat = 85;
+pub const SYS_link = 86;
+pub const SYS_unlink = 87;
+pub const SYS_symlink = 88;
+pub const SYS_readlink = 89;
+pub const SYS_chmod = 90;
+pub const SYS_fchmod = 91;
+pub const SYS_chown = 92;
+pub const SYS_fchown = 93;
+pub const SYS_lchown = 94;
+pub const SYS_umask = 95;
+pub const SYS_gettimeofday = 96;
+pub const SYS_getrlimit = 97;
+pub const SYS_getrusage = 98;
+pub const SYS_sysinfo = 99;
+pub const SYS_times = 100;
+pub const SYS_ptrace = 101;
+pub const SYS_getuid = 102;
+pub const SYS_syslog = 103;
+pub const SYS_getgid = 104;
+pub const SYS_setuid = 105;
+pub const SYS_setgid = 106;
+pub const SYS_geteuid = 107;
+pub const SYS_getegid = 108;
+pub const SYS_setpgid = 109;
+pub const SYS_getppid = 110;
+pub const SYS_getpgrp = 111;
+pub const SYS_setsid = 112;
+pub const SYS_setreuid = 113;
+pub const SYS_setregid = 114;
+pub const SYS_getgroups = 115;
+pub const SYS_setgroups = 116;
+pub const SYS_setresuid = 117;
+pub const SYS_getresuid = 118;
+pub const SYS_setresgid = 119;
+pub const SYS_getresgid = 120;
+pub const SYS_getpgid = 121;
+pub const SYS_setfsuid = 122;
+pub const SYS_setfsgid = 123;
+pub const SYS_getsid = 124;
+pub const SYS_capget = 125;
+pub const SYS_capset = 126;
+pub const SYS_rt_sigpending = 127;
+pub const SYS_rt_sigtimedwait = 128;
+pub const SYS_rt_sigqueueinfo = 129;
+pub const SYS_rt_sigsuspend = 130;
+pub const SYS_sigaltstack = 131;
+pub const SYS_utime = 132;
+pub const SYS_mknod = 133;
+pub const SYS_uselib = 134;
+pub const SYS_personality = 135;
+pub const SYS_ustat = 136;
+pub const SYS_statfs = 137;
+pub const SYS_fstatfs = 138;
+pub const SYS_sysfs = 139;
+pub const SYS_getpriority = 140;
+pub const SYS_setpriority = 141;
+pub const SYS_sched_setparam = 142;
+pub const SYS_sched_getparam = 143;
+pub const SYS_sched_setscheduler = 144;
+pub const SYS_sched_getscheduler = 145;
+pub const SYS_sched_get_priority_max = 146;
+pub const SYS_sched_get_priority_min = 147;
+pub const SYS_sched_rr_get_interval = 148;
+pub const SYS_mlock = 149;
+pub const SYS_munlock = 150;
+pub const SYS_mlockall = 151;
+pub const SYS_munlockall = 152;
+pub const SYS_vhangup = 153;
+pub const SYS_modify_ldt = 154;
+pub const SYS_pivot_root = 155;
+pub const SYS__sysctl = 156;
+pub const SYS_prctl = 157;
+pub const SYS_arch_prctl = 158;
+pub const SYS_adjtimex = 159;
+pub const SYS_setrlimit = 160;
+pub const SYS_chroot = 161;
+pub const SYS_sync = 162;
+pub const SYS_acct = 163;
+pub const SYS_settimeofday = 164;
+pub const SYS_mount = 165;
+pub const SYS_umount2 = 166;
+pub const SYS_swapon = 167;
+pub const SYS_swapoff = 168;
+pub const SYS_reboot = 169;
+pub const SYS_sethostname = 170;
+pub const SYS_setdomainname = 171;
+pub const SYS_iopl = 172;
+pub const SYS_ioperm = 173;
+pub const SYS_create_module = 174;
+pub const SYS_init_module = 175;
+pub const SYS_delete_module = 176;
+pub const SYS_get_kernel_syms = 177;
+pub const SYS_query_module = 178;
+pub const SYS_quotactl = 179;
+pub const SYS_nfsservctl = 180;
+pub const SYS_getpmsg = 181;
+pub const SYS_putpmsg = 182;
+pub const SYS_afs_syscall = 183;
+pub const SYS_tuxcall = 184;
+pub const SYS_security = 185;
+pub const SYS_gettid = 186;
+pub const SYS_readahead = 187;
+pub const SYS_setxattr = 188;
+pub const SYS_lsetxattr = 189;
+pub const SYS_fsetxattr = 190;
+pub const SYS_getxattr = 191;
+pub const SYS_lgetxattr = 192;
+pub const SYS_fgetxattr = 193;
+pub const SYS_listxattr = 194;
+pub const SYS_llistxattr = 195;
+pub const SYS_flistxattr = 196;
+pub const SYS_removexattr = 197;
+pub const SYS_lremovexattr = 198;
+pub const SYS_fremovexattr = 199;
+pub const SYS_tkill = 200;
+pub const SYS_time = 201;
+pub const SYS_futex = 202;
+pub const SYS_sched_setaffinity = 203;
+pub const SYS_sched_getaffinity = 204;
+pub const SYS_set_thread_area = 205;
+pub const SYS_io_setup = 206;
+pub const SYS_io_destroy = 207;
+pub const SYS_io_getevents = 208;
+pub const SYS_io_submit = 209;
+pub const SYS_io_cancel = 210;
+pub const SYS_get_thread_area = 211;
+pub const SYS_lookup_dcookie = 212;
+pub const SYS_epoll_create = 213;
+pub const SYS_epoll_ctl_old = 214;
+pub const SYS_epoll_wait_old = 215;
+pub const SYS_remap_file_pages = 216;
+pub const SYS_getdents64 = 217;
+pub const SYS_set_tid_address = 218;
+pub const SYS_restart_syscall = 219;
+pub const SYS_semtimedop = 220;
+pub const SYS_fadvise64 = 221;
+pub const SYS_timer_create = 222;
+pub const SYS_timer_settime = 223;
+pub const SYS_timer_gettime = 224;
+pub const SYS_timer_getoverrun = 225;
+pub const SYS_timer_delete = 226;
+pub const SYS_clock_settime = 227;
+pub const SYS_clock_gettime = 228;
+pub const SYS_clock_getres = 229;
+pub const SYS_clock_nanosleep = 230;
+pub const SYS_exit_group = 231;
+pub const SYS_epoll_wait = 232;
+pub const SYS_epoll_ctl = 233;
+pub const SYS_tgkill = 234;
+pub const SYS_utimes = 235;
+pub const SYS_vserver = 236;
+pub const SYS_mbind = 237;
+pub const SYS_set_mempolicy = 238;
+pub const SYS_get_mempolicy = 239;
+pub const SYS_mq_open = 240;
+pub const SYS_mq_unlink = 241;
+pub const SYS_mq_timedsend = 242;
+pub const SYS_mq_timedreceive = 243;
+pub const SYS_mq_notify = 244;
+pub const SYS_mq_getsetattr = 245;
+pub const SYS_kexec_load = 246;
+pub const SYS_waitid = 247;
+pub const SYS_add_key = 248;
+pub const SYS_request_key = 249;
+pub const SYS_keyctl = 250;
+pub const SYS_ioprio_set = 251;
+pub const SYS_ioprio_get = 252;
+pub const SYS_inotify_init = 253;
+pub const SYS_inotify_add_watch = 254;
+pub const SYS_inotify_rm_watch = 255;
+pub const SYS_migrate_pages = 256;
+pub const SYS_openat = 257;
+pub const SYS_mkdirat = 258;
+pub const SYS_mknodat = 259;
+pub const SYS_fchownat = 260;
+pub const SYS_futimesat = 261;
+pub const SYS_newfstatat = 262;
+pub const SYS_fstatat = 262;
+pub const SYS_unlinkat = 263;
+pub const SYS_renameat = 264;
+pub const SYS_linkat = 265;
+pub const SYS_symlinkat = 266;
+pub const SYS_readlinkat = 267;
+pub const SYS_fchmodat = 268;
+pub const SYS_faccessat = 269;
+pub const SYS_pselect6 = 270;
+pub const SYS_ppoll = 271;
+pub const SYS_unshare = 272;
+pub const SYS_set_robust_list = 273;
+pub const SYS_get_robust_list = 274;
+pub const SYS_splice = 275;
+pub const SYS_tee = 276;
+pub const SYS_sync_file_range = 277;
+pub const SYS_vmsplice = 278;
+pub const SYS_move_pages = 279;
+pub const SYS_utimensat = 280;
+pub const SYS_epoll_pwait = 281;
+pub const SYS_signalfd = 282;
+pub const SYS_timerfd_create = 283;
+pub const SYS_eventfd = 284;
+pub const SYS_fallocate = 285;
+pub const SYS_timerfd_settime = 286;
+pub const SYS_timerfd_gettime = 287;
+pub const SYS_accept4 = 288;
+pub const SYS_signalfd4 = 289;
+pub const SYS_eventfd2 = 290;
+pub const SYS_epoll_create1 = 291;
+pub const SYS_dup3 = 292;
+pub const SYS_pipe2 = 293;
+pub const SYS_inotify_init1 = 294;
+pub const SYS_preadv = 295;
+pub const SYS_pwritev = 296;
+pub const SYS_rt_tgsigqueueinfo = 297;
+pub const SYS_perf_event_open = 298;
+pub const SYS_recvmmsg = 299;
+pub const SYS_fanotify_init = 300;
+pub const SYS_fanotify_mark = 301;
+pub const SYS_prlimit64 = 302;
+pub const SYS_name_to_handle_at = 303;
+pub const SYS_open_by_handle_at = 304;
+pub const SYS_clock_adjtime = 305;
+pub const SYS_syncfs = 306;
+pub const SYS_sendmmsg = 307;
+pub const SYS_setns = 308;
+pub const SYS_getcpu = 309;
+pub const SYS_process_vm_readv = 310;
+pub const SYS_process_vm_writev = 311;
+pub const SYS_kcmp = 312;
+pub const SYS_finit_module = 313;
+pub const SYS_sched_setattr = 314;
+pub const SYS_sched_getattr = 315;
+pub const SYS_renameat2 = 316;
+pub const SYS_seccomp = 317;
+pub const SYS_getrandom = 318;
+pub const SYS_memfd_create = 319;
+pub const SYS_kexec_file_load = 320;
+pub const SYS_bpf = 321;
+pub const SYS_execveat = 322;
+pub const SYS_userfaultfd = 323;
+pub const SYS_membarrier = 324;
+pub const SYS_mlock2 = 325;
+pub const SYS_copy_file_range = 326;
+pub const SYS_preadv2 = 327;
+pub const SYS_pwritev2 = 328;
+pub const SYS_pkey_mprotect = 329;
+pub const SYS_pkey_alloc = 330;
+pub const SYS_pkey_free = 331;
+pub const SYS_statx = 332;
+pub const SYS_io_pgetevents = 333;
+pub const SYS_rseq = 334;
+pub const SYS_pidfd_send_signal = 424;
+pub const SYS_io_uring_setup = 425;
+pub const SYS_io_uring_enter = 426;
+pub const SYS_io_uring_register = 427;
+
+pub const O_CREAT = 0o100;
+pub const O_EXCL = 0o200;
+pub const O_NOCTTY = 0o400;
+pub const O_TRUNC = 0o1000;
+pub const O_APPEND = 0o2000;
+pub const O_NONBLOCK = 0o4000;
+pub const O_DSYNC = 0o10000;
+pub const O_SYNC = 0o4010000;
+pub const O_RSYNC = 0o4010000;
+pub const O_DIRECTORY = 0o200000;
+pub const O_NOFOLLOW = 0o400000;
+pub const O_CLOEXEC = 0o2000000;
+
+pub const O_ASYNC = 0o20000;
+pub const O_DIRECT = 0o40000;
+pub const O_LARGEFILE = 0;
+pub const O_NOATIME = 0o1000000;
+pub const O_PATH = 0o10000000;
+pub const O_TMPFILE = 0o20200000;
+pub const O_NDELAY = O_NONBLOCK;
+
+pub const F_DUPFD = 0;
+pub const F_GETFD = 1;
+pub const F_SETFD = 2;
+pub const F_GETFL = 3;
+pub const F_SETFL = 4;
+
+pub const F_SETOWN = 8;
+pub const F_GETOWN = 9;
+pub const F_SETSIG = 10;
+pub const F_GETSIG = 11;
+
+pub const F_GETLK = 5;
+pub const F_SETLK = 6;
+pub const F_SETLKW = 7;
+
+pub const F_SETOWN_EX = 15;
+pub const F_GETOWN_EX = 16;
+
+pub const F_GETOWNER_UIDS = 17;
+
+pub const AT_FDCWD = -100;
+pub const AT_SYMLINK_NOFOLLOW = 0x100;
+pub const AT_REMOVEDIR = 0x200;
+pub const AT_SYMLINK_FOLLOW = 0x400;
+pub const AT_NO_AUTOMOUNT = 0x800;
+pub const AT_EMPTY_PATH = 0x1000;
+
+pub const VDSO_USEFUL = true;
+pub const VDSO_CGT_SYM = "__vdso_clock_gettime";
+pub const VDSO_CGT_VER = "LINUX_2.6";
+pub const VDSO_GETCPU_SYM = "__vdso_getcpu";
+pub const VDSO_GETCPU_VER = "LINUX_2.6";
+
+pub const ARCH_SET_GS = 0x1001;
+pub const ARCH_SET_FS = 0x1002;
+pub const ARCH_GET_FS = 0x1003;
+pub const ARCH_GET_GS = 0x1004;
+
+pub const msghdr = extern struct {
+    msg_name: ?*sockaddr,
+    msg_namelen: socklen_t,
+    msg_iov: [*]iovec,
+    msg_iovlen: i32,
+    __pad1: i32,
+    msg_control: ?*c_void,
+    msg_controllen: socklen_t,
+    __pad2: 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,
+    __pad1: i32,
+    msg_control: ?*c_void,
+    msg_controllen: socklen_t,
+    __pad2: socklen_t,
+    msg_flags: i32,
+};
+
+/// Renamed to Stat to not conflict with the stat function.
+pub const Stat = extern struct {
+    dev: u64,
+    ino: u64,
+    nlink: usize,
+
+    mode: u32,
+    uid: u32,
+    gid: u32,
+    __pad0: u32,
+    rdev: u64,
+    size: i64,
+    blksize: isize,
+    blocks: i64,
+
+    atim: timespec,
+    mtim: timespec,
+    ctim: timespec,
+    __unused: [3]isize,
+};
+
+pub const timespec = extern struct {
+    tv_sec: isize,
+    tv_nsec: isize,
+};
+
+pub const timeval = extern struct {
+    tv_sec: isize,
+    tv_usec: isize,
+};
+
+pub const timezone = extern struct {
+    tz_minuteswest: i32,
+    tz_dsttime: i32,
+};
+
+pub const Elf_Symndx = u32;