xref: /rust-libc-0.2.174/src/windows/mod.rs (revision c809c734) 
1 //! Windows CRT definitions
2 
3 use crate::prelude::*;
4 
5 pub type intmax_t = i64;
6 pub type uintmax_t = u64;
7 
8 pub type size_t = usize;
9 pub type ptrdiff_t = isize;
10 pub type intptr_t = isize;
11 pub type uintptr_t = usize;
12 pub type ssize_t = isize;
13 pub type sighandler_t = usize;
14 
15 pub type wchar_t = u16;
16 
17 pub type clock_t = i32;
18 
19 pub type errno_t = c_int;
20 
21 cfg_if! {
22     if #[cfg(all(target_arch = "x86", target_env = "gnu"))] {
23         pub type time_t = i32;
24     } else {
25         pub type time_t = i64;
26     }
27 }
28 
29 pub type off_t = i32;
30 pub type dev_t = u32;
31 pub type ino_t = u16;
32 #[cfg_attr(feature = "extra_traits", derive(Debug))]
33 pub enum timezone {}
34 impl Copy for timezone {}
35 impl Clone for timezone {
36     fn clone(&self) -> timezone {
37         *self
38     }
39 }
40 pub type time64_t = i64;
41 
42 pub type SOCKET = crate::uintptr_t;
43 
44 s! {
45     // note this is the struct called stat64 in Windows. Not stat, nor stati64.
46     pub struct stat {
47         pub st_dev: dev_t,
48         pub st_ino: ino_t,
49         pub st_mode: u16,
50         pub st_nlink: c_short,
51         pub st_uid: c_short,
52         pub st_gid: c_short,
53         pub st_rdev: dev_t,
54         pub st_size: i64,
55         pub st_atime: time64_t,
56         pub st_mtime: time64_t,
57         pub st_ctime: time64_t,
58     }
59 
60     // note that this is called utimbuf64 in Windows
61     pub struct utimbuf {
62         pub actime: time64_t,
63         pub modtime: time64_t,
64     }
65 
66     pub struct tm {
67         pub tm_sec: c_int,
68         pub tm_min: c_int,
69         pub tm_hour: c_int,
70         pub tm_mday: c_int,
71         pub tm_mon: c_int,
72         pub tm_year: c_int,
73         pub tm_wday: c_int,
74         pub tm_yday: c_int,
75         pub tm_isdst: c_int,
76     }
77 
78     pub struct timeval {
79         pub tv_sec: c_long,
80         pub tv_usec: c_long,
81     }
82 
83     pub struct timespec {
84         pub tv_sec: time_t,
85         pub tv_nsec: c_long,
86     }
87 
88     pub struct sockaddr {
89         pub sa_family: c_ushort,
90         pub sa_data: [c_char; 14],
91     }
92 }
93 
94 pub const INT_MIN: c_int = -2147483648;
95 pub const INT_MAX: c_int = 2147483647;
96 
97 pub const EXIT_FAILURE: c_int = 1;
98 pub const EXIT_SUCCESS: c_int = 0;
99 pub const RAND_MAX: c_int = 32767;
100 pub const EOF: c_int = -1;
101 pub const SEEK_SET: c_int = 0;
102 pub const SEEK_CUR: c_int = 1;
103 pub const SEEK_END: c_int = 2;
104 pub const _IOFBF: c_int = 0;
105 pub const _IONBF: c_int = 4;
106 pub const _IOLBF: c_int = 64;
107 pub const BUFSIZ: c_uint = 512;
108 pub const FOPEN_MAX: c_uint = 20;
109 pub const FILENAME_MAX: c_uint = 260;
110 
111 // fcntl.h
112 pub const O_RDONLY: c_int = 0x0000;
113 pub const O_WRONLY: c_int = 0x0001;
114 pub const O_RDWR: c_int = 0x0002;
115 pub const O_APPEND: c_int = 0x0008;
116 pub const O_CREAT: c_int = 0x0100;
117 pub const O_TRUNC: c_int = 0x0200;
118 pub const O_EXCL: c_int = 0x0400;
119 pub const O_TEXT: c_int = 0x4000;
120 pub const O_BINARY: c_int = 0x8000;
121 pub const _O_WTEXT: c_int = 0x10000;
122 pub const _O_U16TEXT: c_int = 0x20000;
123 pub const _O_U8TEXT: c_int = 0x40000;
124 pub const O_RAW: c_int = O_BINARY;
125 pub const O_NOINHERIT: c_int = 0x0080;
126 pub const O_TEMPORARY: c_int = 0x0040;
127 pub const _O_SHORT_LIVED: c_int = 0x1000;
128 pub const _O_OBTAIN_DIR: c_int = 0x2000;
129 pub const O_SEQUENTIAL: c_int = 0x0020;
130 pub const O_RANDOM: c_int = 0x0010;
131 
132 pub const S_IFCHR: c_int = 0o2_0000;
133 pub const S_IFDIR: c_int = 0o4_0000;
134 pub const S_IFREG: c_int = 0o10_0000;
135 pub const S_IFMT: c_int = 0o17_0000;
136 pub const S_IEXEC: c_int = 0o0100;
137 pub const S_IWRITE: c_int = 0o0200;
138 pub const S_IREAD: c_int = 0o0400;
139 
140 pub const LC_ALL: c_int = 0;
141 pub const LC_COLLATE: c_int = 1;
142 pub const LC_CTYPE: c_int = 2;
143 pub const LC_MONETARY: c_int = 3;
144 pub const LC_NUMERIC: c_int = 4;
145 pub const LC_TIME: c_int = 5;
146 
147 pub const EPERM: c_int = 1;
148 pub const ENOENT: c_int = 2;
149 pub const ESRCH: c_int = 3;
150 pub const EINTR: c_int = 4;
151 pub const EIO: c_int = 5;
152 pub const ENXIO: c_int = 6;
153 pub const E2BIG: c_int = 7;
154 pub const ENOEXEC: c_int = 8;
155 pub const EBADF: c_int = 9;
156 pub const ECHILD: c_int = 10;
157 pub const EAGAIN: c_int = 11;
158 pub const ENOMEM: c_int = 12;
159 pub const EACCES: c_int = 13;
160 pub const EFAULT: c_int = 14;
161 pub const EBUSY: c_int = 16;
162 pub const EEXIST: c_int = 17;
163 pub const EXDEV: c_int = 18;
164 pub const ENODEV: c_int = 19;
165 pub const ENOTDIR: c_int = 20;
166 pub const EISDIR: c_int = 21;
167 pub const EINVAL: c_int = 22;
168 pub const ENFILE: c_int = 23;
169 pub const EMFILE: c_int = 24;
170 pub const ENOTTY: c_int = 25;
171 pub const EFBIG: c_int = 27;
172 pub const ENOSPC: c_int = 28;
173 pub const ESPIPE: c_int = 29;
174 pub const EROFS: c_int = 30;
175 pub const EMLINK: c_int = 31;
176 pub const EPIPE: c_int = 32;
177 pub const EDOM: c_int = 33;
178 pub const ERANGE: c_int = 34;
179 pub const EDEADLK: c_int = 36;
180 pub const EDEADLOCK: c_int = 36;
181 pub const ENAMETOOLONG: c_int = 38;
182 pub const ENOLCK: c_int = 39;
183 pub const ENOSYS: c_int = 40;
184 pub const ENOTEMPTY: c_int = 41;
185 pub const EILSEQ: c_int = 42;
186 pub const STRUNCATE: c_int = 80;
187 
188 // POSIX Supplement (from errno.h)
189 pub const EADDRINUSE: c_int = 100;
190 pub const EADDRNOTAVAIL: c_int = 101;
191 pub const EAFNOSUPPORT: c_int = 102;
192 pub const EALREADY: c_int = 103;
193 pub const EBADMSG: c_int = 104;
194 pub const ECANCELED: c_int = 105;
195 pub const ECONNABORTED: c_int = 106;
196 pub const ECONNREFUSED: c_int = 107;
197 pub const ECONNRESET: c_int = 108;
198 pub const EDESTADDRREQ: c_int = 109;
199 pub const EHOSTUNREACH: c_int = 110;
200 pub const EIDRM: c_int = 111;
201 pub const EINPROGRESS: c_int = 112;
202 pub const EISCONN: c_int = 113;
203 pub const ELOOP: c_int = 114;
204 pub const EMSGSIZE: c_int = 115;
205 pub const ENETDOWN: c_int = 116;
206 pub const ENETRESET: c_int = 117;
207 pub const ENETUNREACH: c_int = 118;
208 pub const ENOBUFS: c_int = 119;
209 pub const ENODATA: c_int = 120;
210 pub const ENOLINK: c_int = 121;
211 pub const ENOMSG: c_int = 122;
212 pub const ENOPROTOOPT: c_int = 123;
213 pub const ENOSR: c_int = 124;
214 pub const ENOSTR: c_int = 125;
215 pub const ENOTCONN: c_int = 126;
216 pub const ENOTRECOVERABLE: c_int = 127;
217 pub const ENOTSOCK: c_int = 128;
218 pub const ENOTSUP: c_int = 129;
219 pub const EOPNOTSUPP: c_int = 130;
220 pub const EOVERFLOW: c_int = 132;
221 pub const EOWNERDEAD: c_int = 133;
222 pub const EPROTO: c_int = 134;
223 pub const EPROTONOSUPPORT: c_int = 135;
224 pub const EPROTOTYPE: c_int = 136;
225 pub const ETIME: c_int = 137;
226 pub const ETIMEDOUT: c_int = 138;
227 pub const ETXTBSY: c_int = 139;
228 pub const EWOULDBLOCK: c_int = 140;
229 
230 // signal codes
231 pub const SIGINT: c_int = 2;
232 pub const SIGILL: c_int = 4;
233 pub const SIGFPE: c_int = 8;
234 pub const SIGSEGV: c_int = 11;
235 pub const SIGTERM: c_int = 15;
236 pub const SIGABRT: c_int = 22;
237 pub const NSIG: c_int = 23;
238 
239 pub const SIG_ERR: c_int = -1;
240 pub const SIG_DFL: crate::sighandler_t = 0;
241 pub const SIG_IGN: crate::sighandler_t = 1;
242 pub const SIG_GET: crate::sighandler_t = 2;
243 pub const SIG_SGE: crate::sighandler_t = 3;
244 pub const SIG_ACK: crate::sighandler_t = 4;
245 
246 // DIFF(main): removed in 458c58f409
247 // FIXME(msrv): done by `std` starting in 1.79.0
248 // inline comment below appeases style checker
249 #[cfg(all(target_env = "msvc", feature = "rustc-dep-of-std"))] // " if "
250 #[link(name = "msvcrt", cfg(not(target_feature = "crt-static")))]
251 #[link(name = "libcmt", cfg(target_feature = "crt-static"))]
252 extern "C" {}
253 
254 #[cfg_attr(feature = "extra_traits", derive(Debug))]
255 pub enum FILE {}
256 impl Copy for FILE {}
257 impl Clone for FILE {
258     fn clone(&self) -> FILE {
259         *self
260     }
261 }
262 #[cfg_attr(feature = "extra_traits", derive(Debug))]
263 pub enum fpos_t {} // FIXME(windows): fill this out with a struct
264 impl Copy for fpos_t {}
265 impl Clone for fpos_t {
266     fn clone(&self) -> fpos_t {
267         *self
268     }
269 }
270 
271 // Special handling for all print and scan type functions because of https://github.com/rust-lang/libc/issues/2860
272 cfg_if! {
273     if #[cfg(not(feature = "rustc-dep-of-std"))] {
274         #[cfg_attr(
275             all(windows, target_env = "msvc"),
276             link(name = "legacy_stdio_definitions")
277         )]
278         extern "C" {
279             pub fn printf(format: *const c_char, ...) -> c_int;
280             pub fn fprintf(stream: *mut FILE, format: *const c_char, ...) -> c_int;
281         }
282     }
283 }
284 
285 extern "C" {
286     pub fn isalnum(c: c_int) -> c_int;
287     pub fn isalpha(c: c_int) -> c_int;
288     pub fn iscntrl(c: c_int) -> c_int;
289     pub fn isdigit(c: c_int) -> c_int;
290     pub fn isgraph(c: c_int) -> c_int;
291     pub fn islower(c: c_int) -> c_int;
292     pub fn isprint(c: c_int) -> c_int;
293     pub fn ispunct(c: c_int) -> c_int;
294     pub fn isspace(c: c_int) -> c_int;
295     pub fn isupper(c: c_int) -> c_int;
296     pub fn isxdigit(c: c_int) -> c_int;
297     pub fn isblank(c: c_int) -> c_int;
298     pub fn tolower(c: c_int) -> c_int;
299     pub fn toupper(c: c_int) -> c_int;
300     pub fn fopen(filename: *const c_char, mode: *const c_char) -> *mut FILE;
301     pub fn freopen(filename: *const c_char, mode: *const c_char, file: *mut FILE) -> *mut FILE;
302     pub fn fflush(file: *mut FILE) -> c_int;
303     pub fn fclose(file: *mut FILE) -> c_int;
304     pub fn remove(filename: *const c_char) -> c_int;
305     pub fn rename(oldname: *const c_char, newname: *const c_char) -> c_int;
306     pub fn tmpfile() -> *mut FILE;
307     pub fn setvbuf(stream: *mut FILE, buffer: *mut c_char, mode: c_int, size: size_t) -> c_int;
308     pub fn setbuf(stream: *mut FILE, buf: *mut c_char);
309     pub fn getchar() -> c_int;
310     pub fn putchar(c: c_int) -> c_int;
311     pub fn fgetc(stream: *mut FILE) -> c_int;
312     pub fn fgets(buf: *mut c_char, n: c_int, stream: *mut FILE) -> *mut c_char;
313     pub fn fputc(c: c_int, stream: *mut FILE) -> c_int;
314     pub fn fputs(s: *const c_char, stream: *mut FILE) -> c_int;
315     pub fn puts(s: *const c_char) -> c_int;
316     pub fn ungetc(c: c_int, stream: *mut FILE) -> c_int;
317     pub fn fread(ptr: *mut c_void, size: size_t, nobj: size_t, stream: *mut FILE) -> size_t;
318     pub fn fwrite(ptr: *const c_void, size: size_t, nobj: size_t, stream: *mut FILE) -> size_t;
319     pub fn fseek(stream: *mut FILE, offset: c_long, whence: c_int) -> c_int;
320     pub fn ftell(stream: *mut FILE) -> c_long;
321     pub fn rewind(stream: *mut FILE);
322     pub fn fgetpos(stream: *mut FILE, ptr: *mut fpos_t) -> c_int;
323     pub fn fsetpos(stream: *mut FILE, ptr: *const fpos_t) -> c_int;
324     pub fn feof(stream: *mut FILE) -> c_int;
325     pub fn ferror(stream: *mut FILE) -> c_int;
326     pub fn perror(s: *const c_char);
327     pub fn atof(s: *const c_char) -> c_double;
328     pub fn atoi(s: *const c_char) -> c_int;
329     pub fn atol(s: *const c_char) -> c_long;
330     pub fn atoll(s: *const c_char) -> c_longlong;
331     pub fn strtod(s: *const c_char, endp: *mut *mut c_char) -> c_double;
332     pub fn strtof(s: *const c_char, endp: *mut *mut c_char) -> c_float;
333     pub fn strtol(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_long;
334     pub fn strtoll(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_longlong;
335     pub fn strtoul(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_ulong;
336     pub fn strtoull(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_ulonglong;
337     pub fn calloc(nobj: size_t, size: size_t) -> *mut c_void;
338     pub fn malloc(size: size_t) -> *mut c_void;
339     pub fn _msize(p: *mut c_void) -> size_t;
340     pub fn realloc(p: *mut c_void, size: size_t) -> *mut c_void;
341     pub fn free(p: *mut c_void);
342     pub fn abort() -> !;
343     pub fn exit(status: c_int) -> !;
344     pub fn _exit(status: c_int) -> !;
345     pub fn atexit(cb: extern "C" fn()) -> c_int;
346     pub fn system(s: *const c_char) -> c_int;
347     pub fn getenv(s: *const c_char) -> *mut c_char;
348 
349     pub fn strcpy(dst: *mut c_char, src: *const c_char) -> *mut c_char;
350     pub fn strncpy(dst: *mut c_char, src: *const c_char, n: size_t) -> *mut c_char;
351     pub fn strcat(s: *mut c_char, ct: *const c_char) -> *mut c_char;
352     pub fn strncat(s: *mut c_char, ct: *const c_char, n: size_t) -> *mut c_char;
353     pub fn strcmp(cs: *const c_char, ct: *const c_char) -> c_int;
354     pub fn strncmp(cs: *const c_char, ct: *const c_char, n: size_t) -> c_int;
355     pub fn strcoll(cs: *const c_char, ct: *const c_char) -> c_int;
356     pub fn strchr(cs: *const c_char, c: c_int) -> *mut c_char;
357     pub fn strrchr(cs: *const c_char, c: c_int) -> *mut c_char;
358     pub fn strspn(cs: *const c_char, ct: *const c_char) -> size_t;
359     pub fn strcspn(cs: *const c_char, ct: *const c_char) -> size_t;
360     pub fn strdup(cs: *const c_char) -> *mut c_char;
361     pub fn strpbrk(cs: *const c_char, ct: *const c_char) -> *mut c_char;
362     pub fn strstr(cs: *const c_char, ct: *const c_char) -> *mut c_char;
363     pub fn strlen(cs: *const c_char) -> size_t;
364     pub fn strnlen(cs: *const c_char, maxlen: size_t) -> size_t;
365     pub fn strerror(n: c_int) -> *mut c_char;
366     pub fn strtok(s: *mut c_char, t: *const c_char) -> *mut c_char;
367     pub fn strxfrm(s: *mut c_char, ct: *const c_char, n: size_t) -> size_t;
368     pub fn wcslen(buf: *const wchar_t) -> size_t;
369     pub fn wcstombs(dest: *mut c_char, src: *const wchar_t, n: size_t) -> size_t;
370 
371     pub fn memchr(cx: *const c_void, c: c_int, n: size_t) -> *mut c_void;
372     pub fn memcmp(cx: *const c_void, ct: *const c_void, n: size_t) -> c_int;
373     pub fn memcpy(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
374     pub fn memmove(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
375     pub fn memset(dest: *mut c_void, c: c_int, n: size_t) -> *mut c_void;
376 
377     pub fn abs(i: c_int) -> c_int;
378     pub fn labs(i: c_long) -> c_long;
379     pub fn rand() -> c_int;
380     pub fn srand(seed: c_uint);
381 
382     pub fn signal(signum: c_int, handler: sighandler_t) -> sighandler_t;
383     pub fn raise(signum: c_int) -> c_int;
384 
385     #[link_name = "_gmtime64_s"]
386     pub fn gmtime_s(destTime: *mut tm, srcTime: *const time_t) -> c_int;
387     #[link_name = "_localtime64_s"]
388     pub fn localtime_s(tmDest: *mut tm, sourceTime: *const time_t) -> crate::errno_t;
389     #[link_name = "_time64"]
390     pub fn time(destTime: *mut time_t) -> time_t;
391     #[link_name = "_chmod"]
392     pub fn chmod(path: *const c_char, mode: c_int) -> c_int;
393     #[link_name = "_wchmod"]
394     pub fn wchmod(path: *const wchar_t, mode: c_int) -> c_int;
395     #[link_name = "_mkdir"]
396     pub fn mkdir(path: *const c_char) -> c_int;
397     #[link_name = "_wrmdir"]
398     pub fn wrmdir(path: *const wchar_t) -> c_int;
399     #[link_name = "_fstat64"]
400     pub fn fstat(fildes: c_int, buf: *mut stat) -> c_int;
401     #[link_name = "_stat64"]
402     pub fn stat(path: *const c_char, buf: *mut stat) -> c_int;
403     #[link_name = "_wstat64"]
404     pub fn wstat(path: *const wchar_t, buf: *mut stat) -> c_int;
405     #[link_name = "_wutime64"]
406     pub fn wutime(file: *const wchar_t, buf: *mut utimbuf) -> c_int;
407     #[link_name = "_popen"]
408     pub fn popen(command: *const c_char, mode: *const c_char) -> *mut crate::FILE;
409     #[link_name = "_pclose"]
410     pub fn pclose(stream: *mut crate::FILE) -> c_int;
411     #[link_name = "_fdopen"]
412     pub fn fdopen(fd: c_int, mode: *const c_char) -> *mut crate::FILE;
413     #[link_name = "_fileno"]
414     pub fn fileno(stream: *mut crate::FILE) -> c_int;
415     #[link_name = "_open"]
416     pub fn open(path: *const c_char, oflag: c_int, ...) -> c_int;
417     #[link_name = "_wopen"]
418     pub fn wopen(path: *const wchar_t, oflag: c_int, ...) -> c_int;
419     #[link_name = "_creat"]
420     pub fn creat(path: *const c_char, mode: c_int) -> c_int;
421     #[link_name = "_access"]
422     pub fn access(path: *const c_char, amode: c_int) -> c_int;
423     #[link_name = "_chdir"]
424     pub fn chdir(dir: *const c_char) -> c_int;
425     #[link_name = "_close"]
426     pub fn close(fd: c_int) -> c_int;
427     #[link_name = "_dup"]
428     pub fn dup(fd: c_int) -> c_int;
429     #[link_name = "_dup2"]
430     pub fn dup2(src: c_int, dst: c_int) -> c_int;
431     #[link_name = "_execl"]
432     pub fn execl(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
433     #[link_name = "_wexecl"]
434     pub fn wexecl(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
435     #[link_name = "_execle"]
436     pub fn execle(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
437     #[link_name = "_wexecle"]
438     pub fn wexecle(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
439     #[link_name = "_execlp"]
440     pub fn execlp(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
441     #[link_name = "_wexeclp"]
442     pub fn wexeclp(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
443     #[link_name = "_execlpe"]
444     pub fn execlpe(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
445     #[link_name = "_wexeclpe"]
446     pub fn wexeclpe(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
447     #[link_name = "_execv"]
448     // DIFF(main): changed to `intptr_t` in e77f551de9
449     pub fn execv(prog: *const c_char, argv: *const *const c_char) -> intptr_t;
450     #[link_name = "_execve"]
451     pub fn execve(
452         prog: *const c_char,
453         argv: *const *const c_char,
454         envp: *const *const c_char,
455     ) -> c_int;
456     #[link_name = "_execvp"]
457     pub fn execvp(c: *const c_char, argv: *const *const c_char) -> c_int;
458     #[link_name = "_execvpe"]
459     pub fn execvpe(
460         c: *const c_char,
461         argv: *const *const c_char,
462         envp: *const *const c_char,
463     ) -> c_int;
464 
465     #[link_name = "_wexecv"]
466     pub fn wexecv(prog: *const wchar_t, argv: *const *const wchar_t) -> intptr_t;
467     #[link_name = "_wexecve"]
468     pub fn wexecve(
469         prog: *const wchar_t,
470         argv: *const *const wchar_t,
471         envp: *const *const wchar_t,
472     ) -> intptr_t;
473     #[link_name = "_wexecvp"]
474     pub fn wexecvp(c: *const wchar_t, argv: *const *const wchar_t) -> intptr_t;
475     #[link_name = "_wexecvpe"]
476     pub fn wexecvpe(
477         c: *const wchar_t,
478         argv: *const *const wchar_t,
479         envp: *const *const wchar_t,
480     ) -> intptr_t;
481     #[link_name = "_getcwd"]
482     pub fn getcwd(buf: *mut c_char, size: c_int) -> *mut c_char;
483     #[link_name = "_getpid"]
484     pub fn getpid() -> c_int;
485     #[link_name = "_isatty"]
486     pub fn isatty(fd: c_int) -> c_int;
487     #[link_name = "_lseek"]
488     pub fn lseek(fd: c_int, offset: c_long, origin: c_int) -> c_long;
489     #[link_name = "_lseeki64"]
490     pub fn lseek64(fd: c_int, offset: c_longlong, origin: c_int) -> c_longlong;
491     #[link_name = "_pipe"]
492     pub fn pipe(fds: *mut c_int, psize: c_uint, textmode: c_int) -> c_int;
493     #[link_name = "_read"]
494     pub fn read(fd: c_int, buf: *mut c_void, count: c_uint) -> c_int;
495     #[link_name = "_rmdir"]
496     pub fn rmdir(path: *const c_char) -> c_int;
497     #[link_name = "_unlink"]
498     pub fn unlink(c: *const c_char) -> c_int;
499     #[link_name = "_write"]
500     pub fn write(fd: c_int, buf: *const c_void, count: c_uint) -> c_int;
501     #[link_name = "_commit"]
502     pub fn commit(fd: c_int) -> c_int;
503     #[link_name = "_get_osfhandle"]
504     pub fn get_osfhandle(fd: c_int) -> intptr_t;
505     #[link_name = "_open_osfhandle"]
506     pub fn open_osfhandle(osfhandle: intptr_t, flags: c_int) -> c_int;
507     pub fn setlocale(category: c_int, locale: *const c_char) -> *mut c_char;
508     #[link_name = "_wsetlocale"]
509     pub fn wsetlocale(category: c_int, locale: *const wchar_t) -> *mut wchar_t;
510     #[link_name = "_aligned_malloc"]
511     pub fn aligned_malloc(size: size_t, alignment: size_t) -> *mut c_void;
512     #[link_name = "_aligned_free"]
513     pub fn aligned_free(ptr: *mut c_void);
514     #[link_name = "_aligned_realloc"]
515     pub fn aligned_realloc(memblock: *mut c_void, size: size_t, alignment: size_t) -> *mut c_void;
516     #[link_name = "_putenv"]
517     pub fn putenv(envstring: *const c_char) -> c_int;
518     #[link_name = "_wputenv"]
519     pub fn wputenv(envstring: *const crate::wchar_t) -> c_int;
520     #[link_name = "_putenv_s"]
521     pub fn putenv_s(envstring: *const c_char, value_string: *const c_char) -> crate::errno_t;
522     #[link_name = "_wputenv_s"]
523     pub fn wputenv_s(
524         envstring: *const crate::wchar_t,
525         value_string: *const crate::wchar_t,
526     ) -> crate::errno_t;
527 }
528 
529 extern "system" {
530     pub fn listen(s: SOCKET, backlog: c_int) -> c_int;
531     pub fn accept(s: SOCKET, addr: *mut crate::sockaddr, addrlen: *mut c_int) -> SOCKET;
532     pub fn bind(s: SOCKET, name: *const crate::sockaddr, namelen: c_int) -> c_int;
533     pub fn connect(s: SOCKET, name: *const crate::sockaddr, namelen: c_int) -> c_int;
534     pub fn getpeername(s: SOCKET, name: *mut crate::sockaddr, nameln: *mut c_int) -> c_int;
535     pub fn getsockname(s: SOCKET, name: *mut crate::sockaddr, nameln: *mut c_int) -> c_int;
536     pub fn getsockopt(
537         s: SOCKET,
538         level: c_int,
539         optname: c_int,
540         optval: *mut c_char,
541         optlen: *mut c_int,
542     ) -> c_int;
543     pub fn recvfrom(
544         s: SOCKET,
545         buf: *mut c_char,
546         len: c_int,
547         flags: c_int,
548         from: *mut crate::sockaddr,
549         fromlen: *mut c_int,
550     ) -> c_int;
551     pub fn sendto(
552         s: SOCKET,
553         buf: *const c_char,
554         len: c_int,
555         flags: c_int,
556         to: *const crate::sockaddr,
557         tolen: c_int,
558     ) -> c_int;
559     pub fn setsockopt(
560         s: SOCKET,
561         level: c_int,
562         optname: c_int,
563         optval: *const c_char,
564         optlen: c_int,
565     ) -> c_int;
566     pub fn socket(af: c_int, socket_type: c_int, protocol: c_int) -> SOCKET;
567 }
568 
569 cfg_if! {
570     if #[cfg(all(target_env = "gnu"))] {
571         mod gnu;
572         pub use self::gnu::*;
573     } else if #[cfg(all(target_env = "msvc"))] {
574         mod msvc;
575         pub use self::msvc::*;
576     } else {
577         // Unknown target_env
578     }
579 }
580