xref: /rust-libc-0.2.174/src/windows/mod.rs (revision 1ae3ff23) 
1 //! Windows CRT definitions
2 
3 use c_void;
4 
5 pub type c_schar = i8;
6 pub type c_uchar = u8;
7 pub type c_short = i16;
8 pub type c_ushort = u16;
9 pub type c_int = i32;
10 pub type c_uint = u32;
11 pub type c_float = f32;
12 pub type c_double = f64;
13 pub type c_longlong = i64;
14 pub type c_ulonglong = u64;
15 pub type intmax_t = i64;
16 pub type uintmax_t = u64;
17 
18 pub type size_t = usize;
19 pub type ptrdiff_t = isize;
20 pub type intptr_t = isize;
21 pub type uintptr_t = usize;
22 pub type ssize_t = isize;
23 pub type sighandler_t = usize;
24 
25 pub type c_char = i8;
26 pub type c_long = i32;
27 pub type c_ulong = u32;
28 pub type wchar_t = u16;
29 
30 pub type clock_t = i32;
31 
32 pub type errno_t = ::c_int;
33 
34 cfg_if! {
35     if #[cfg(all(target_arch = "x86", target_env = "gnu"))] {
36         pub type time_t = i32;
37     } else {
38         pub type time_t = i64;
39     }
40 }
41 
42 pub type off_t = i32;
43 pub type dev_t = u32;
44 pub type ino_t = u16;
45 #[cfg_attr(feature = "extra_traits", derive(Debug))]
46 pub enum timezone {}
47 impl ::Copy for timezone {}
48 impl ::Clone for timezone {
49     fn clone(&self) -> timezone {
50         *self
51     }
52 }
53 pub type time64_t = i64;
54 
55 pub type SOCKET = ::uintptr_t;
56 
57 s! {
58     // note this is the struct called stat64 in Windows. Not stat, nor stati64.
59     pub struct stat {
60         pub st_dev: dev_t,
61         pub st_ino: ino_t,
62         pub st_mode: u16,
63         pub st_nlink: ::c_short,
64         pub st_uid: ::c_short,
65         pub st_gid: ::c_short,
66         pub st_rdev: dev_t,
67         pub st_size: i64,
68         pub st_atime: time64_t,
69         pub st_mtime: time64_t,
70         pub st_ctime: time64_t,
71     }
72 
73     // note that this is called utimbuf64 in Windows
74     pub struct utimbuf {
75         pub actime: time64_t,
76         pub modtime: time64_t,
77     }
78 
79     pub struct tm {
80         pub tm_sec: ::c_int,
81         pub tm_min: ::c_int,
82         pub tm_hour: ::c_int,
83         pub tm_mday: ::c_int,
84         pub tm_mon: ::c_int,
85         pub tm_year: ::c_int,
86         pub tm_wday: ::c_int,
87         pub tm_yday: ::c_int,
88         pub tm_isdst: ::c_int,
89     }
90 
91     pub struct timeval {
92         pub tv_sec: c_long,
93         pub tv_usec: c_long,
94     }
95 
96     pub struct timespec {
97         pub tv_sec: time_t,
98         pub tv_nsec: c_long,
99     }
100 
101     pub struct sockaddr {
102         pub sa_family: c_ushort,
103         pub sa_data: [c_char; 14],
104     }
105 }
106 
107 pub const INT_MIN: c_int = -2147483648;
108 pub const INT_MAX: c_int = 2147483647;
109 
110 pub const EXIT_FAILURE: ::c_int = 1;
111 pub const EXIT_SUCCESS: ::c_int = 0;
112 pub const RAND_MAX: ::c_int = 32767;
113 pub const EOF: ::c_int = -1;
114 pub const SEEK_SET: ::c_int = 0;
115 pub const SEEK_CUR: ::c_int = 1;
116 pub const SEEK_END: ::c_int = 2;
117 pub const _IOFBF: ::c_int = 0;
118 pub const _IONBF: ::c_int = 4;
119 pub const _IOLBF: ::c_int = 64;
120 pub const BUFSIZ: ::c_uint = 512;
121 pub const FOPEN_MAX: ::c_uint = 20;
122 pub const FILENAME_MAX: ::c_uint = 260;
123 
124 // fcntl.h
125 pub const O_RDONLY: ::c_int = 0x0000;
126 pub const O_WRONLY: ::c_int = 0x0001;
127 pub const O_RDWR: ::c_int = 0x0002;
128 pub const O_APPEND: ::c_int = 0x0008;
129 pub const O_CREAT: ::c_int = 0x0100;
130 pub const O_TRUNC: ::c_int = 0x0200;
131 pub const O_EXCL: ::c_int = 0x0400;
132 pub const O_TEXT: ::c_int = 0x4000;
133 pub const O_BINARY: ::c_int = 0x8000;
134 pub const _O_WTEXT: ::c_int = 0x10000;
135 pub const _O_U16TEXT: ::c_int = 0x20000;
136 pub const _O_U8TEXT: ::c_int = 0x40000;
137 pub const O_RAW: ::c_int = O_BINARY;
138 pub const O_NOINHERIT: ::c_int = 0x0080;
139 pub const O_TEMPORARY: ::c_int = 0x0040;
140 pub const _O_SHORT_LIVED: ::c_int = 0x1000;
141 pub const _O_OBTAIN_DIR: ::c_int = 0x2000;
142 pub const O_SEQUENTIAL: ::c_int = 0x0020;
143 pub const O_RANDOM: ::c_int = 0x0010;
144 
145 pub const S_IFCHR: ::c_int = 0o2_0000;
146 pub const S_IFDIR: ::c_int = 0o4_0000;
147 pub const S_IFREG: ::c_int = 0o10_0000;
148 pub const S_IFMT: ::c_int = 0o17_0000;
149 pub const S_IEXEC: ::c_int = 0o0100;
150 pub const S_IWRITE: ::c_int = 0o0200;
151 pub const S_IREAD: ::c_int = 0o0400;
152 
153 pub const LC_ALL: ::c_int = 0;
154 pub const LC_COLLATE: ::c_int = 1;
155 pub const LC_CTYPE: ::c_int = 2;
156 pub const LC_MONETARY: ::c_int = 3;
157 pub const LC_NUMERIC: ::c_int = 4;
158 pub const LC_TIME: ::c_int = 5;
159 
160 pub const EPERM: ::c_int = 1;
161 pub const ENOENT: ::c_int = 2;
162 pub const ESRCH: ::c_int = 3;
163 pub const EINTR: ::c_int = 4;
164 pub const EIO: ::c_int = 5;
165 pub const ENXIO: ::c_int = 6;
166 pub const E2BIG: ::c_int = 7;
167 pub const ENOEXEC: ::c_int = 8;
168 pub const EBADF: ::c_int = 9;
169 pub const ECHILD: ::c_int = 10;
170 pub const EAGAIN: ::c_int = 11;
171 pub const ENOMEM: ::c_int = 12;
172 pub const EACCES: ::c_int = 13;
173 pub const EFAULT: ::c_int = 14;
174 pub const EBUSY: ::c_int = 16;
175 pub const EEXIST: ::c_int = 17;
176 pub const EXDEV: ::c_int = 18;
177 pub const ENODEV: ::c_int = 19;
178 pub const ENOTDIR: ::c_int = 20;
179 pub const EISDIR: ::c_int = 21;
180 pub const EINVAL: ::c_int = 22;
181 pub const ENFILE: ::c_int = 23;
182 pub const EMFILE: ::c_int = 24;
183 pub const ENOTTY: ::c_int = 25;
184 pub const EFBIG: ::c_int = 27;
185 pub const ENOSPC: ::c_int = 28;
186 pub const ESPIPE: ::c_int = 29;
187 pub const EROFS: ::c_int = 30;
188 pub const EMLINK: ::c_int = 31;
189 pub const EPIPE: ::c_int = 32;
190 pub const EDOM: ::c_int = 33;
191 pub const ERANGE: ::c_int = 34;
192 pub const EDEADLK: ::c_int = 36;
193 pub const EDEADLOCK: ::c_int = 36;
194 pub const ENAMETOOLONG: ::c_int = 38;
195 pub const ENOLCK: ::c_int = 39;
196 pub const ENOSYS: ::c_int = 40;
197 pub const ENOTEMPTY: ::c_int = 41;
198 pub const EILSEQ: ::c_int = 42;
199 pub const STRUNCATE: ::c_int = 80;
200 
201 // POSIX Supplement (from errno.h)
202 pub const EADDRINUSE: ::c_int = 100;
203 pub const EADDRNOTAVAIL: ::c_int = 101;
204 pub const EAFNOSUPPORT: ::c_int = 102;
205 pub const EALREADY: ::c_int = 103;
206 pub const EBADMSG: ::c_int = 104;
207 pub const ECANCELED: ::c_int = 105;
208 pub const ECONNABORTED: ::c_int = 106;
209 pub const ECONNREFUSED: ::c_int = 107;
210 pub const ECONNRESET: ::c_int = 108;
211 pub const EDESTADDRREQ: ::c_int = 109;
212 pub const EHOSTUNREACH: ::c_int = 110;
213 pub const EIDRM: ::c_int = 111;
214 pub const EINPROGRESS: ::c_int = 112;
215 pub const EISCONN: ::c_int = 113;
216 pub const ELOOP: ::c_int = 114;
217 pub const EMSGSIZE: ::c_int = 115;
218 pub const ENETDOWN: ::c_int = 116;
219 pub const ENETRESET: ::c_int = 117;
220 pub const ENETUNREACH: ::c_int = 118;
221 pub const ENOBUFS: ::c_int = 119;
222 pub const ENODATA: ::c_int = 120;
223 pub const ENOLINK: ::c_int = 121;
224 pub const ENOMSG: ::c_int = 122;
225 pub const ENOPROTOOPT: ::c_int = 123;
226 pub const ENOSR: ::c_int = 124;
227 pub const ENOSTR: ::c_int = 125;
228 pub const ENOTCONN: ::c_int = 126;
229 pub const ENOTRECOVERABLE: ::c_int = 127;
230 pub const ENOTSOCK: ::c_int = 128;
231 pub const ENOTSUP: ::c_int = 129;
232 pub const EOPNOTSUPP: ::c_int = 130;
233 pub const EOVERFLOW: ::c_int = 132;
234 pub const EOWNERDEAD: ::c_int = 133;
235 pub const EPROTO: ::c_int = 134;
236 pub const EPROTONOSUPPORT: ::c_int = 135;
237 pub const EPROTOTYPE: ::c_int = 136;
238 pub const ETIME: ::c_int = 137;
239 pub const ETIMEDOUT: ::c_int = 138;
240 pub const ETXTBSY: ::c_int = 139;
241 pub const EWOULDBLOCK: ::c_int = 140;
242 
243 // signal codes
244 pub const SIGINT: ::c_int = 2;
245 pub const SIGILL: ::c_int = 4;
246 pub const SIGFPE: ::c_int = 8;
247 pub const SIGSEGV: ::c_int = 11;
248 pub const SIGTERM: ::c_int = 15;
249 pub const SIGABRT: ::c_int = 22;
250 pub const NSIG: ::c_int = 23;
251 
252 pub const SIG_ERR: ::c_int = -1;
253 pub const SIG_DFL: ::sighandler_t = 0;
254 pub const SIG_IGN: ::sighandler_t = 1;
255 pub const SIG_GET: ::sighandler_t = 2;
256 pub const SIG_SGE: ::sighandler_t = 3;
257 pub const SIG_ACK: ::sighandler_t = 4;
258 
259 // DIFF(main): removed in 458c58f409
260 // FIXME(msrv): done by `std` starting in 1.79.0
261 // inline comment below appeases style checker
262 #[cfg(all(target_env = "msvc", feature = "rustc-dep-of-std"))] // " if "
263 #[link(name = "msvcrt", cfg(not(target_feature = "crt-static")))]
264 #[link(name = "libcmt", cfg(target_feature = "crt-static"))]
265 extern "C" {}
266 
267 #[cfg_attr(feature = "extra_traits", derive(Debug))]
268 pub enum FILE {}
269 impl ::Copy for FILE {}
270 impl ::Clone for FILE {
271     fn clone(&self) -> FILE {
272         *self
273     }
274 }
275 #[cfg_attr(feature = "extra_traits", derive(Debug))]
276 pub enum fpos_t {} // FIXME: fill this out with a struct
277 impl ::Copy for fpos_t {}
278 impl ::Clone for fpos_t {
279     fn clone(&self) -> fpos_t {
280         *self
281     }
282 }
283 
284 // Special handling for all print and scan type functions because of https://github.com/rust-lang/libc/issues/2860
285 cfg_if! {
286     if #[cfg(not(feature = "rustc-dep-of-std"))] {
287         #[cfg_attr(
288             all(windows, target_env = "msvc"),
289             link(name = "legacy_stdio_definitions")
290         )]
291         extern "C" {
292             pub fn printf(format: *const c_char, ...) -> ::c_int;
293             pub fn fprintf(stream: *mut FILE, format: *const c_char, ...) -> ::c_int;
294         }
295     }
296 }
297 
298 extern "C" {
299     pub fn isalnum(c: c_int) -> c_int;
300     pub fn isalpha(c: c_int) -> c_int;
301     pub fn iscntrl(c: c_int) -> c_int;
302     pub fn isdigit(c: c_int) -> c_int;
303     pub fn isgraph(c: c_int) -> c_int;
304     pub fn islower(c: c_int) -> c_int;
305     pub fn isprint(c: c_int) -> c_int;
306     pub fn ispunct(c: c_int) -> c_int;
307     pub fn isspace(c: c_int) -> c_int;
308     pub fn isupper(c: c_int) -> c_int;
309     pub fn isxdigit(c: c_int) -> c_int;
310     pub fn isblank(c: c_int) -> c_int;
311     pub fn tolower(c: c_int) -> c_int;
312     pub fn toupper(c: c_int) -> c_int;
313     pub fn fopen(filename: *const c_char, mode: *const c_char) -> *mut FILE;
314     pub fn freopen(filename: *const c_char, mode: *const c_char, file: *mut FILE) -> *mut FILE;
315     pub fn fflush(file: *mut FILE) -> c_int;
316     pub fn fclose(file: *mut FILE) -> c_int;
317     pub fn remove(filename: *const c_char) -> c_int;
318     pub fn rename(oldname: *const c_char, newname: *const c_char) -> c_int;
319     pub fn tmpfile() -> *mut FILE;
320     pub fn setvbuf(stream: *mut FILE, buffer: *mut c_char, mode: c_int, size: size_t) -> c_int;
321     pub fn setbuf(stream: *mut FILE, buf: *mut c_char);
322     pub fn getchar() -> c_int;
323     pub fn putchar(c: c_int) -> c_int;
324     pub fn fgetc(stream: *mut FILE) -> c_int;
325     pub fn fgets(buf: *mut c_char, n: c_int, stream: *mut FILE) -> *mut c_char;
326     pub fn fputc(c: c_int, stream: *mut FILE) -> c_int;
327     pub fn fputs(s: *const c_char, stream: *mut FILE) -> c_int;
328     pub fn puts(s: *const c_char) -> c_int;
329     pub fn ungetc(c: c_int, stream: *mut FILE) -> c_int;
330     pub fn fread(ptr: *mut c_void, size: size_t, nobj: size_t, stream: *mut FILE) -> size_t;
331     pub fn fwrite(ptr: *const c_void, size: size_t, nobj: size_t, stream: *mut FILE) -> size_t;
332     pub fn fseek(stream: *mut FILE, offset: c_long, whence: c_int) -> c_int;
333     pub fn ftell(stream: *mut FILE) -> c_long;
334     pub fn rewind(stream: *mut FILE);
335     pub fn fgetpos(stream: *mut FILE, ptr: *mut fpos_t) -> c_int;
336     pub fn fsetpos(stream: *mut FILE, ptr: *const fpos_t) -> c_int;
337     pub fn feof(stream: *mut FILE) -> c_int;
338     pub fn ferror(stream: *mut FILE) -> c_int;
339     pub fn perror(s: *const c_char);
340     pub fn atof(s: *const c_char) -> c_double;
341     pub fn atoi(s: *const c_char) -> c_int;
342     pub fn atol(s: *const c_char) -> c_long;
343     pub fn atoll(s: *const c_char) -> c_longlong;
344     pub fn strtod(s: *const c_char, endp: *mut *mut c_char) -> c_double;
345     pub fn strtof(s: *const c_char, endp: *mut *mut c_char) -> c_float;
346     pub fn strtol(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_long;
347     pub fn strtoll(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_longlong;
348     pub fn strtoul(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_ulong;
349     pub fn strtoull(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_ulonglong;
350     pub fn calloc(nobj: size_t, size: size_t) -> *mut c_void;
351     pub fn malloc(size: size_t) -> *mut c_void;
352     pub fn _msize(p: *mut c_void) -> size_t;
353     pub fn realloc(p: *mut c_void, size: size_t) -> *mut c_void;
354     pub fn free(p: *mut c_void);
355     pub fn abort() -> !;
356     pub fn exit(status: c_int) -> !;
357     pub fn _exit(status: c_int) -> !;
358     pub fn atexit(cb: extern "C" fn()) -> c_int;
359     pub fn system(s: *const c_char) -> c_int;
360     pub fn getenv(s: *const c_char) -> *mut c_char;
361 
362     pub fn strcpy(dst: *mut c_char, src: *const c_char) -> *mut c_char;
363     pub fn strncpy(dst: *mut c_char, src: *const c_char, n: size_t) -> *mut c_char;
364     pub fn strcat(s: *mut c_char, ct: *const c_char) -> *mut c_char;
365     pub fn strncat(s: *mut c_char, ct: *const c_char, n: size_t) -> *mut c_char;
366     pub fn strcmp(cs: *const c_char, ct: *const c_char) -> c_int;
367     pub fn strncmp(cs: *const c_char, ct: *const c_char, n: size_t) -> c_int;
368     pub fn strcoll(cs: *const c_char, ct: *const c_char) -> c_int;
369     pub fn strchr(cs: *const c_char, c: c_int) -> *mut c_char;
370     pub fn strrchr(cs: *const c_char, c: c_int) -> *mut c_char;
371     pub fn strspn(cs: *const c_char, ct: *const c_char) -> size_t;
372     pub fn strcspn(cs: *const c_char, ct: *const c_char) -> size_t;
373     pub fn strdup(cs: *const c_char) -> *mut c_char;
374     pub fn strpbrk(cs: *const c_char, ct: *const c_char) -> *mut c_char;
375     pub fn strstr(cs: *const c_char, ct: *const c_char) -> *mut c_char;
376     pub fn strlen(cs: *const c_char) -> size_t;
377     pub fn strnlen(cs: *const c_char, maxlen: size_t) -> size_t;
378     pub fn strerror(n: c_int) -> *mut c_char;
379     pub fn strtok(s: *mut c_char, t: *const c_char) -> *mut c_char;
380     pub fn strxfrm(s: *mut c_char, ct: *const c_char, n: size_t) -> size_t;
381     pub fn wcslen(buf: *const wchar_t) -> size_t;
382     pub fn wcstombs(dest: *mut c_char, src: *const wchar_t, n: size_t) -> ::size_t;
383 
384     pub fn memchr(cx: *const c_void, c: c_int, n: size_t) -> *mut c_void;
385     pub fn memcmp(cx: *const c_void, ct: *const c_void, n: size_t) -> c_int;
386     pub fn memcpy(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
387     pub fn memmove(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
388     pub fn memset(dest: *mut c_void, c: c_int, n: size_t) -> *mut c_void;
389 
390     pub fn abs(i: c_int) -> c_int;
391     pub fn labs(i: c_long) -> c_long;
392     pub fn rand() -> c_int;
393     pub fn srand(seed: c_uint);
394 
395     pub fn signal(signum: c_int, handler: sighandler_t) -> sighandler_t;
396     pub fn raise(signum: c_int) -> c_int;
397 
398     #[link_name = "_gmtime64_s"]
399     pub fn gmtime_s(destTime: *mut tm, srcTime: *const time_t) -> ::c_int;
400     #[link_name = "_localtime64_s"]
401     pub fn localtime_s(tmDest: *mut tm, sourceTime: *const time_t) -> ::errno_t;
402     #[link_name = "_time64"]
403     pub fn time(destTime: *mut time_t) -> time_t;
404     #[link_name = "_chmod"]
405     pub fn chmod(path: *const c_char, mode: ::c_int) -> ::c_int;
406     #[link_name = "_wchmod"]
407     pub fn wchmod(path: *const wchar_t, mode: ::c_int) -> ::c_int;
408     #[link_name = "_mkdir"]
409     pub fn mkdir(path: *const c_char) -> ::c_int;
410     #[link_name = "_wrmdir"]
411     pub fn wrmdir(path: *const wchar_t) -> ::c_int;
412     #[link_name = "_fstat64"]
413     pub fn fstat(fildes: ::c_int, buf: *mut stat) -> ::c_int;
414     #[link_name = "_stat64"]
415     pub fn stat(path: *const c_char, buf: *mut stat) -> ::c_int;
416     #[link_name = "_wstat64"]
417     pub fn wstat(path: *const wchar_t, buf: *mut stat) -> ::c_int;
418     #[link_name = "_wutime64"]
419     pub fn wutime(file: *const wchar_t, buf: *mut utimbuf) -> ::c_int;
420     #[link_name = "_popen"]
421     pub fn popen(command: *const c_char, mode: *const c_char) -> *mut ::FILE;
422     #[link_name = "_pclose"]
423     pub fn pclose(stream: *mut ::FILE) -> ::c_int;
424     #[link_name = "_fdopen"]
425     pub fn fdopen(fd: ::c_int, mode: *const c_char) -> *mut ::FILE;
426     #[link_name = "_fileno"]
427     pub fn fileno(stream: *mut ::FILE) -> ::c_int;
428     #[link_name = "_open"]
429     pub fn open(path: *const c_char, oflag: ::c_int, ...) -> ::c_int;
430     #[link_name = "_wopen"]
431     pub fn wopen(path: *const wchar_t, oflag: ::c_int, ...) -> ::c_int;
432     #[link_name = "_creat"]
433     pub fn creat(path: *const c_char, mode: ::c_int) -> ::c_int;
434     #[link_name = "_access"]
435     pub fn access(path: *const c_char, amode: ::c_int) -> ::c_int;
436     #[link_name = "_chdir"]
437     pub fn chdir(dir: *const c_char) -> ::c_int;
438     #[link_name = "_close"]
439     pub fn close(fd: ::c_int) -> ::c_int;
440     #[link_name = "_dup"]
441     pub fn dup(fd: ::c_int) -> ::c_int;
442     #[link_name = "_dup2"]
443     pub fn dup2(src: ::c_int, dst: ::c_int) -> ::c_int;
444     #[link_name = "_execl"]
445     pub fn execl(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
446     #[link_name = "_wexecl"]
447     pub fn wexecl(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
448     #[link_name = "_execle"]
449     pub fn execle(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
450     #[link_name = "_wexecle"]
451     pub fn wexecle(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
452     #[link_name = "_execlp"]
453     pub fn execlp(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
454     #[link_name = "_wexeclp"]
455     pub fn wexeclp(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
456     #[link_name = "_execlpe"]
457     pub fn execlpe(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
458     #[link_name = "_wexeclpe"]
459     pub fn wexeclpe(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
460     #[link_name = "_execv"]
461     // DIFF(main): changed to `intptr_t` in e77f551de9
462     pub fn execv(prog: *const c_char, argv: *const *const c_char) -> ::intptr_t;
463     #[link_name = "_execve"]
464     pub fn execve(
465         prog: *const c_char,
466         argv: *const *const c_char,
467         envp: *const *const c_char,
468     ) -> ::c_int;
469     #[link_name = "_execvp"]
470     pub fn execvp(c: *const c_char, argv: *const *const c_char) -> ::c_int;
471     #[link_name = "_execvpe"]
472     pub fn execvpe(
473         c: *const c_char,
474         argv: *const *const c_char,
475         envp: *const *const c_char,
476     ) -> ::c_int;
477 
478     #[link_name = "_wexecv"]
479     pub fn wexecv(prog: *const wchar_t, argv: *const *const wchar_t) -> ::intptr_t;
480     #[link_name = "_wexecve"]
481     pub fn wexecve(
482         prog: *const wchar_t,
483         argv: *const *const wchar_t,
484         envp: *const *const wchar_t,
485     ) -> ::intptr_t;
486     #[link_name = "_wexecvp"]
487     pub fn wexecvp(c: *const wchar_t, argv: *const *const wchar_t) -> ::intptr_t;
488     #[link_name = "_wexecvpe"]
489     pub fn wexecvpe(
490         c: *const wchar_t,
491         argv: *const *const wchar_t,
492         envp: *const *const wchar_t,
493     ) -> ::intptr_t;
494     #[link_name = "_getcwd"]
495     pub fn getcwd(buf: *mut c_char, size: ::c_int) -> *mut c_char;
496     #[link_name = "_getpid"]
497     pub fn getpid() -> ::c_int;
498     #[link_name = "_isatty"]
499     pub fn isatty(fd: ::c_int) -> ::c_int;
500     #[link_name = "_lseek"]
501     pub fn lseek(fd: ::c_int, offset: c_long, origin: ::c_int) -> c_long;
502     #[link_name = "_lseeki64"]
503     pub fn lseek64(fd: ::c_int, offset: c_longlong, origin: ::c_int) -> c_longlong;
504     #[link_name = "_pipe"]
505     pub fn pipe(fds: *mut ::c_int, psize: ::c_uint, textmode: ::c_int) -> ::c_int;
506     #[link_name = "_read"]
507     pub fn read(fd: ::c_int, buf: *mut ::c_void, count: ::c_uint) -> ::c_int;
508     #[link_name = "_rmdir"]
509     pub fn rmdir(path: *const c_char) -> ::c_int;
510     #[link_name = "_unlink"]
511     pub fn unlink(c: *const c_char) -> ::c_int;
512     #[link_name = "_write"]
513     pub fn write(fd: ::c_int, buf: *const ::c_void, count: ::c_uint) -> ::c_int;
514     #[link_name = "_commit"]
515     pub fn commit(fd: ::c_int) -> ::c_int;
516     #[link_name = "_get_osfhandle"]
517     pub fn get_osfhandle(fd: ::c_int) -> ::intptr_t;
518     #[link_name = "_open_osfhandle"]
519     pub fn open_osfhandle(osfhandle: ::intptr_t, flags: ::c_int) -> ::c_int;
520     pub fn setlocale(category: ::c_int, locale: *const c_char) -> *mut c_char;
521     #[link_name = "_wsetlocale"]
522     pub fn wsetlocale(category: ::c_int, locale: *const wchar_t) -> *mut wchar_t;
523     #[link_name = "_aligned_malloc"]
524     pub fn aligned_malloc(size: size_t, alignment: size_t) -> *mut c_void;
525     #[link_name = "_aligned_free"]
526     pub fn aligned_free(ptr: *mut ::c_void);
527     #[link_name = "_aligned_realloc"]
528     pub fn aligned_realloc(memblock: *mut ::c_void, size: size_t, alignment: size_t)
529         -> *mut c_void;
530     #[link_name = "_putenv"]
531     pub fn putenv(envstring: *const ::c_char) -> ::c_int;
532     #[link_name = "_wputenv"]
533     pub fn wputenv(envstring: *const ::wchar_t) -> ::c_int;
534     #[link_name = "_putenv_s"]
535     pub fn putenv_s(envstring: *const ::c_char, value_string: *const ::c_char) -> ::errno_t;
536     #[link_name = "_wputenv_s"]
537     pub fn wputenv_s(envstring: *const ::wchar_t, value_string: *const ::wchar_t) -> ::errno_t;
538 }
539 
540 extern "system" {
541     pub fn listen(s: SOCKET, backlog: ::c_int) -> ::c_int;
542     pub fn accept(s: SOCKET, addr: *mut ::sockaddr, addrlen: *mut ::c_int) -> SOCKET;
543     pub fn bind(s: SOCKET, name: *const ::sockaddr, namelen: ::c_int) -> ::c_int;
544     pub fn connect(s: SOCKET, name: *const ::sockaddr, namelen: ::c_int) -> ::c_int;
545     pub fn getpeername(s: SOCKET, name: *mut ::sockaddr, nameln: *mut ::c_int) -> ::c_int;
546     pub fn getsockname(s: SOCKET, name: *mut ::sockaddr, nameln: *mut ::c_int) -> ::c_int;
547     pub fn getsockopt(
548         s: SOCKET,
549         level: ::c_int,
550         optname: ::c_int,
551         optval: *mut ::c_char,
552         optlen: *mut ::c_int,
553     ) -> ::c_int;
554     pub fn recvfrom(
555         s: SOCKET,
556         buf: *mut ::c_char,
557         len: ::c_int,
558         flags: ::c_int,
559         from: *mut ::sockaddr,
560         fromlen: *mut ::c_int,
561     ) -> ::c_int;
562     pub fn sendto(
563         s: SOCKET,
564         buf: *const ::c_char,
565         len: ::c_int,
566         flags: ::c_int,
567         to: *const ::sockaddr,
568         tolen: ::c_int,
569     ) -> ::c_int;
570     pub fn setsockopt(
571         s: SOCKET,
572         level: ::c_int,
573         optname: ::c_int,
574         optval: *const ::c_char,
575         optlen: ::c_int,
576     ) -> ::c_int;
577     pub fn socket(af: ::c_int, socket_type: ::c_int, protocol: ::c_int) -> SOCKET;
578 }
579 
580 cfg_if! {
581     if #[cfg(all(target_env = "gnu"))] {
582         mod gnu;
583         pub use self::gnu::*;
584     } else if #[cfg(all(target_env = "msvc"))] {
585         mod msvc;
586         pub use self::msvc::*;
587     } else {
588         // Unknown target_env
589     }
590 }
591