authorgravatar for hello@nektro.netMeghan Denny <hello@nektro.net> 2025-12-17 17:38:45 -08:00
committergravatar for hello@nektro.netMeghan Denny <hello@nektro.net> 2025-12-17 17:38:45 -08:00
loge450ec70ee1d5dbac10b5ce5b972c0fbb1f74298
tree300745ca7ad3e4e43f2b6cd405bc6b910f95a777
parent7e6da1531ea4f12e26156c75492d2577363557eb

add zig-sys-libc things

2 files changed, 203 insertions(+), 0 deletions(-)

mod.zig+193
...@@ -1,5 +1,6 @@...@@ -1,5 +1,6 @@
1const std = @import("std");1const std = @import("std");
2const builtin = @import("builtin");2const builtin = @import("builtin");
3const linux = std.os.linux;
34
4pub const errno = struct {5pub const errno = struct {
5 pub const Error = error{6 pub const Error = error{
...@@ -924,5 +925,197 @@ pub const errno = struct {...@@ -924,5 +925,197 @@ pub const errno = struct {
924};925};
925926
926pub const libc = struct {927pub const libc = struct {
928 /// int close(int fildes);
929 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/close.html
930 pub extern fn close(fildes: c_int) c_int;
931
932 /// void exit(int status);
933 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/exit.html
934 pub extern fn exit(status: c_int) noreturn;
935
936 /// char *getenv(const char *name);
937 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/getenv.html
938 pub extern fn getenv(name: [*:0]const u8) ?[*:0]u8;
939 /// pid_t getpid(void);
940 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/getpid.html
941 pub extern fn getpid() pid_t;
942 /// pthread_t pthread_self(void);
943 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/pthread_self.html
944 pub extern fn pthread_self() pthread_t;
945 /// int fstat(int fildes, struct stat *buf);
946 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/fstat.html
947 pub extern fn fstat(fd: c_int, buf: *struct_stat) c_int;
948 /// int mkdirat(int fd, const char *path, mode_t mode);
949 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/mkdirat.html
950 pub extern fn mkdirat(fd: c_int, path: [*:0]const u8, mode: mode_t) c_int;
951 /// ssize_t readv(int fildes, const struct iovec *iov, int iovcnt);
952 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/readv.html
953 pub extern fn readv(fd: c_int, iovec: [*]const struct_iovec, count: c_int) isize;
954 /// ssize_t read(int fildes, void *buf, size_t nbyte);
955 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/read.html
956 pub extern fn read(fd: c_int, buf: [*]u8, count: usize) isize;
957 /// int openat(int fd, const char *path, int oflag, ...);
958 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/openat.html
959 pub extern fn openat(fd: c_int, file: [*:0]const u8, oflag: c_int, ...) c_int;
960 /// int fstat(int fildes, struct stat *buf);
961 /// https://pubs.opengroup.org/onlinepubs/9699919799.orig/functions/fstat.html
962 pub extern fn fstat(fd: c_int, buf: *struct_stat) c_int;
963
964
965
966
967
968
969
970
971
972
973 //
974 //
975
927 pub extern fn __errno_location() *c_int;976 pub extern fn __errno_location() *c_int;
928};977};
978
979pub const clock_t = c_long;
980pub const pid_t = c_int;
981pub const gid_t = c_uint;
982pub const uid_t = c_uint;
983pub const struct_group = opaque {};
984pub const struct_hostent = opaque {};
985pub const struct_netent = opaque {};
986pub const struct_protoent = opaque {};
987pub const struct_passwd = opaque {};
988pub const struct_servent = opaque {};
989pub const struct_utmpx = opaque {};
990pub const wint_t = c_uint;
991pub const struct_if_nameindex = opaque {};
992pub const struct_lconv = opaque {};
993pub const pthread_t = c_ulong;
994pub const FILE = opaque {};
995pub const locale_t = *const opaque {};
996pub const nl_catd = *const opaque {};
997pub const intmax_t = i64;
998pub const wchar_t = c_int;
999pub const mode_t = c_uint;
1000pub const struct_sockaddr = linux.sockaddr;
1001pub const socklen_t = c_uint;
1002pub const clockid_t = c_int;
1003pub const struct_timespec = linux.timespec;
1004pub const DIR = opaque {};
1005pub const time_t = i64;
1006pub const div_t = extern struct { quot: c_int, rem: c_int };
1007pub const off_t = linux.off_t;
1008pub const ino_t = linux.ino_t;
1009pub const struct_stat = linux.Stat;
1010pub const struct_iovec = extern struct { base: [*]u8, len: usize };
1011
1012pub const AT = struct {
1013 pub const FDCWD = -100;
1014 pub const SYMLINK_NOFOLLOW = 0x100;
1015 pub const REMOVEDIR = 0x200;
1016 pub const SYMLINK_FOLLOW = 0x400;
1017 pub const EACCESS = 0x200;
1018};
1019
1020pub const O = struct {
1021 pub usingnamespace switch (builtin.target.cpu.arch) {
1022 .x86_64,
1023 => struct {
1024 pub const CREAT = 0o100;
1025 pub const EXCL = 0o200;
1026 pub const NOCTTY = 0o400;
1027 pub const TRUNC = 0o1000;
1028 pub const APPEND = 0o2000;
1029 pub const NONBLOCK = 0o4000;
1030 pub const DSYNC = 0o10000;
1031 pub const SYNC = 0o4010000;
1032 pub const RSYNC = 0o4010000;
1033 pub const DIRECTORY = 0o200000;
1034 pub const NOFOLLOW = 0o400000;
1035 pub const CLOEXEC = 0o2000000;
1036 pub const ASYNC = 0o20000;
1037 pub const DIRECT = 0o40000;
1038 pub const LARGEFILE = 0o100000;
1039 pub const NOATIME = 0o1000000;
1040 pub const PATH = 0o10000000;
1041 pub const TMPFILE = 0o20200000;
1042 pub const NDELAY = O.NONBLOCK;
1043 },
1044 else => @compileError("TODO"),
1045 };
1046 pub const SEARCH = O.PATH;
1047 pub const EXEC = O.PATH;
1048 pub const TTY_INIT = 0;
1049 pub const ACCMODE = (3 | O.SEARCH);
1050 pub const RDONLY = 0;
1051 pub const WRONLY = 1;
1052 pub const RDWR = 2;
1053};
1054
1055pub const NAME_MAX = 255;
1056pub const PATH_MAX = 4096;
1057pub const NGROUPS_MAX = 32;
1058pub const ARG_MAX = 131072;
1059pub const IOV_MAX = 1024;
1060pub const SYMLOOP_MAX = 40;
1061pub const TZNAME_MAX = 6;
1062pub const TTY_NAME_MAX = 32;
1063pub const HOST_NAME_MAX = 255;
1064
1065pub fn getpid() pid_t {
1066 return libc.getpid();
1067}
1068
1069pub fn exit(status: c_int) noreturn {
1070 return libc.exit(status);
1071}
1072
1073pub fn getenv(name: [:0]const u8) ?[:0]u8 {
1074 return std.mem.sliceTo(libc.getenv(name.ptr) orelse return null, 0);
1075}
1076
1077pub fn openat(fd: c_int, file: [*:0]const u8, oflag: c_int) errno.Error!c_int {
1078 const rc = libc.openat(fd, file, oflag);
1079 if (rc == -1) return errno.fromInt(errno.fromLibC());
1080 return rc;
1081}
1082
1083pub fn close(fd: c_int) errno.Error!void {
1084 const rc = libc.close(fd);
1085 if (rc == -1) return errno.fromInt(errno.fromLibC());
1086 std.debug.assert(rc == 0);
1087}
1088
1089pub fn read(fd: c_int, buf: []u8) errno.Error!usize {
1090 const rc = libc.read(fd, buf.ptr, buf.len);
1091 if (rc == -1) return errno.fromInt(errno.fromLibC());
1092 std.debug.assert(rc >= 0);
1093 return @intCast(rc);
1094}
1095
1096pub fn fstat(fd: c_int) errno.Error!struct_stat {
1097 var buf: struct_stat = undefined;
1098 const rc = libc.fstat(fd, &buf);
1099 if (rc == -1) return errno.fromInt(errno.fromLibC());
1100 std.debug.assert(rc == 0);
1101 return buf;
1102}
1103
1104pub fn readv(fd: c_int, bufs: []const struct_iovec) errno.Error!usize {
1105 std.debug.assert(bufs.len > 0);
1106 std.debug.assert(bufs.len <= IOV_MAX);
1107 const rc = libc.readv(fd, bufs.ptr, @intCast(bufs.len));
1108 if (rc == -1) return errno.fromInt(errno.fromLibC());
1109 std.debug.assert(rc >= 0);
1110 return @intCast(rc);
1111}
1112
1113pub fn mkdirat(fd: c_int, path: [*:0]const u8, mode: mode_t) errno.Error!void {
1114 const rc = libc.mkdirat(fd, path, mode);
1115 if (rc == -1) return errno.fromInt(errno.fromLibC());
1116 std.debug.assert(rc == 0);
1117}
1118
1119pub fn pthread_self() pthread_t {
1120 return libc.pthread_self();
1121}
test.zig+10
...@@ -4,4 +4,14 @@ const linux = @import("sys-linux");...@@ -4,4 +4,14 @@ const linux = @import("sys-linux");
44
5test {5test {
6 if (builtin.target.os.tag != .linux) return;6 if (builtin.target.os.tag != .linux) return;
7 _ = &linux.read;
8 _ = &linux.getpid;
9 _ = &linux.exit;
10 _ = &linux.getenv;
11 _ = &linux.openat;
12 _ = &linux.close;
13 _ = &linux.fstat;
14 _ = &linux.readv;
15 _ = &linux.mkdirat;
16 _ = &linux.pthread_self;
7}17}