xref: /rust-libc-0.2.174/src/windows/mod.rs (revision aaaa9d4e) 
1 //! Windows CRT definitions
2 
3 pub type c_schar = i8;
4 pub type c_uchar = u8;
5 pub type c_short = i16;
6 pub type c_ushort = u16;
7 pub type c_int = i32;
8 pub type c_uint = u32;
9 pub type c_float = f32;
10 pub type c_double = f64;
11 pub type c_longlong = i64;
12 pub type c_ulonglong = u64;
13 pub type intmax_t = i64;
14 pub type uintmax_t = u64;
15 
16 pub type size_t = usize;
17 pub type ptrdiff_t = isize;
18 pub type intptr_t = isize;
19 pub type uintptr_t = usize;
20 pub type ssize_t = isize;
21 pub type sighandler_t = usize;
22 
23 pub type c_char = i8;
24 pub type c_long = i32;
25 pub type c_ulong = u32;
26 pub type wchar_t = u16;
27 
28 pub type clock_t = i32;
29 
30 pub type errno_t = ::c_int;
31 
32 cfg_if! {
33     if #[cfg(all(target_arch = "x86", target_env = "gnu"))] {
34         pub type time_t = i32;
35     } else {
36         pub type time_t = i64;
37     }
38 }
39 
40 pub type off_t = i32;
41 pub type dev_t = u32;
42 pub type ino_t = u16;
43 #[cfg_attr(feature = "extra_traits", derive(Debug))]
44 pub enum timezone {}
45 impl ::Copy for timezone {}
46 impl ::Clone for timezone {
47     fn clone(&self) -> timezone {
48         *self
49     }
50 }
51 pub type time64_t = i64;
52 
53 pub type SOCKET = ::uintptr_t;
54 
55 s! {
56     // note this is the struct called stat64 in Windows. Not stat, nor stati64.
57     pub struct stat {
58         pub st_dev: dev_t,
59         pub st_ino: ino_t,
60         pub st_mode: u16,
61         pub st_nlink: ::c_short,
62         pub st_uid: ::c_short,
63         pub st_gid: ::c_short,
64         pub st_rdev: dev_t,
65         pub st_size: i64,
66         pub st_atime: time64_t,
67         pub st_mtime: time64_t,
68         pub st_ctime: time64_t,
69     }
70 
71     // note that this is called utimbuf64 in Windows
72     pub struct utimbuf {
73         pub actime: time64_t,
74         pub modtime: time64_t,
75     }
76 
77     pub struct tm {
78         pub tm_sec: ::c_int,
79         pub tm_min: ::c_int,
80         pub tm_hour: ::c_int,
81         pub tm_mday: ::c_int,
82         pub tm_mon: ::c_int,
83         pub tm_year: ::c_int,
84         pub tm_wday: ::c_int,
85         pub tm_yday: ::c_int,
86         pub tm_isdst: ::c_int,
87     }
88 
89     pub struct timeval {
90         pub tv_sec: c_long,
91         pub tv_usec: c_long,
92     }
93 
94     pub struct timespec {
95         pub tv_sec: time_t,
96         pub tv_nsec: c_long,
97     }
98 
99     pub struct sockaddr {
100         pub sa_family: c_ushort,
101         pub sa_data: [c_char; 14],
102     }
103 }
104 
105 pub const INT_MIN: c_int = -2147483648;
106 pub const INT_MAX: c_int = 2147483647;
107 
108 pub const EXIT_FAILURE: ::c_int = 1;
109 pub const EXIT_SUCCESS: ::c_int = 0;
110 pub const RAND_MAX: ::c_int = 32767;
111 pub const EOF: ::c_int = -1;
112 pub const SEEK_SET: ::c_int = 0;
113 pub const SEEK_CUR: ::c_int = 1;
114 pub const SEEK_END: ::c_int = 2;
115 pub const _IOFBF: ::c_int = 0;
116 pub const _IONBF: ::c_int = 4;
117 pub const _IOLBF: ::c_int = 64;
118 pub const BUFSIZ: ::c_uint = 512;
119 pub const FOPEN_MAX: ::c_uint = 20;
120 pub const FILENAME_MAX: ::c_uint = 260;
121 
122 // fcntl.h
123 pub const O_RDONLY: ::c_int = 0x0000;
124 pub const O_WRONLY: ::c_int = 0x0001;
125 pub const O_RDWR: ::c_int = 0x0002;
126 pub const O_APPEND: ::c_int = 0x0008;
127 pub const O_CREAT: ::c_int = 0x0100;
128 pub const O_TRUNC: ::c_int = 0x0200;
129 pub const O_EXCL: ::c_int = 0x0400;
130 pub const O_TEXT: ::c_int = 0x4000;
131 pub const O_BINARY: ::c_int = 0x8000;
132 pub const _O_WTEXT: ::c_int = 0x10000;
133 pub const _O_U16TEXT: ::c_int = 0x20000;
134 pub const _O_U8TEXT: ::c_int = 0x40000;
135 pub const O_RAW: ::c_int = O_BINARY;
136 pub const O_NOINHERIT: ::c_int = 0x0080;
137 pub const O_TEMPORARY: ::c_int = 0x0040;
138 pub const _O_SHORT_LIVED: ::c_int = 0x1000;
139 pub const _O_OBTAIN_DIR: ::c_int = 0x2000;
140 pub const O_SEQUENTIAL: ::c_int = 0x0020;
141 pub const O_RANDOM: ::c_int = 0x0010;
142 
143 pub const S_IFCHR: ::c_int = 8192;
144 pub const S_IFDIR: ::c_int = 16384;
145 pub const S_IFREG: ::c_int = 32768;
146 pub const S_IFMT: ::c_int = 61440;
147 pub const S_IEXEC: ::c_int = 64;
148 pub const S_IWRITE: ::c_int = 128;
149 pub const S_IREAD: ::c_int = 256;
150 
151 pub const LC_ALL: ::c_int = 0;
152 pub const LC_COLLATE: ::c_int = 1;
153 pub const LC_CTYPE: ::c_int = 2;
154 pub const LC_MONETARY: ::c_int = 3;
155 pub const LC_NUMERIC: ::c_int = 4;
156 pub const LC_TIME: ::c_int = 5;
157 
158 pub const EPERM: ::c_int = 1;
159 pub const ENOENT: ::c_int = 2;
160 pub const ESRCH: ::c_int = 3;
161 pub const EINTR: ::c_int = 4;
162 pub const EIO: ::c_int = 5;
163 pub const ENXIO: ::c_int = 6;
164 pub const E2BIG: ::c_int = 7;
165 pub const ENOEXEC: ::c_int = 8;
166 pub const EBADF: ::c_int = 9;
167 pub const ECHILD: ::c_int = 10;
168 pub const EAGAIN: ::c_int = 11;
169 pub const ENOMEM: ::c_int = 12;
170 pub const EACCES: ::c_int = 13;
171 pub const EFAULT: ::c_int = 14;
172 pub const EBUSY: ::c_int = 16;
173 pub const EEXIST: ::c_int = 17;
174 pub const EXDEV: ::c_int = 18;
175 pub const ENODEV: ::c_int = 19;
176 pub const ENOTDIR: ::c_int = 20;
177 pub const EISDIR: ::c_int = 21;
178 pub const EINVAL: ::c_int = 22;
179 pub const ENFILE: ::c_int = 23;
180 pub const EMFILE: ::c_int = 24;
181 pub const ENOTTY: ::c_int = 25;
182 pub const EFBIG: ::c_int = 27;
183 pub const ENOSPC: ::c_int = 28;
184 pub const ESPIPE: ::c_int = 29;
185 pub const EROFS: ::c_int = 30;
186 pub const EMLINK: ::c_int = 31;
187 pub const EPIPE: ::c_int = 32;
188 pub const EDOM: ::c_int = 33;
189 pub const ERANGE: ::c_int = 34;
190 pub const EDEADLK: ::c_int = 36;
191 pub const EDEADLOCK: ::c_int = 36;
192 pub const ENAMETOOLONG: ::c_int = 38;
193 pub const ENOLCK: ::c_int = 39;
194 pub const ENOSYS: ::c_int = 40;
195 pub const ENOTEMPTY: ::c_int = 41;
196 pub const EILSEQ: ::c_int = 42;
197 pub const STRUNCATE: ::c_int = 80;
198 
199 // POSIX Supplement (from errno.h)
200 pub const EADDRINUSE: ::c_int = 100;
201 pub const EADDRNOTAVAIL: ::c_int = 101;
202 pub const EAFNOSUPPORT: ::c_int = 102;
203 pub const EALREADY: ::c_int = 103;
204 pub const EBADMSG: ::c_int = 104;
205 pub const ECANCELED: ::c_int = 105;
206 pub const ECONNABORTED: ::c_int = 106;
207 pub const ECONNREFUSED: ::c_int = 107;
208 pub const ECONNRESET: ::c_int = 108;
209 pub const EDESTADDRREQ: ::c_int = 109;
210 pub const EHOSTUNREACH: ::c_int = 110;
211 pub const EIDRM: ::c_int = 111;
212 pub const EINPROGRESS: ::c_int = 112;
213 pub const EISCONN: ::c_int = 113;
214 pub const ELOOP: ::c_int = 114;
215 pub const EMSGSIZE: ::c_int = 115;
216 pub const ENETDOWN: ::c_int = 116;
217 pub const ENETRESET: ::c_int = 117;
218 pub const ENETUNREACH: ::c_int = 118;
219 pub const ENOBUFS: ::c_int = 119;
220 pub const ENODATA: ::c_int = 120;
221 pub const ENOLINK: ::c_int = 121;
222 pub const ENOMSG: ::c_int = 122;
223 pub const ENOPROTOOPT: ::c_int = 123;
224 pub const ENOSR: ::c_int = 124;
225 pub const ENOSTR: ::c_int = 125;
226 pub const ENOTCONN: ::c_int = 126;
227 pub const ENOTRECOVERABLE: ::c_int = 127;
228 pub const ENOTSOCK: ::c_int = 128;
229 pub const ENOTSUP: ::c_int = 129;
230 pub const EOPNOTSUPP: ::c_int = 130;
231 pub const EOVERFLOW: ::c_int = 132;
232 pub const EOWNERDEAD: ::c_int = 133;
233 pub const EPROTO: ::c_int = 134;
234 pub const EPROTONOSUPPORT: ::c_int = 135;
235 pub const EPROTOTYPE: ::c_int = 136;
236 pub const ETIME: ::c_int = 137;
237 pub const ETIMEDOUT: ::c_int = 138;
238 pub const ETXTBSY: ::c_int = 139;
239 pub const EWOULDBLOCK: ::c_int = 140;
240 
241 // signal codes
242 pub const SIGINT: ::c_int = 2;
243 pub const SIGILL: ::c_int = 4;
244 pub const SIGFPE: ::c_int = 8;
245 pub const SIGSEGV: ::c_int = 11;
246 pub const SIGTERM: ::c_int = 15;
247 pub const SIGABRT: ::c_int = 22;
248 pub const NSIG: ::c_int = 23;
249 
250 pub const SIG_ERR: ::c_int = -1;
251 pub const SIG_DFL: ::sighandler_t = 0;
252 pub const SIG_IGN: ::sighandler_t = 1;
253 pub const SIG_GET: ::sighandler_t = 2;
254 pub const SIG_SGE: ::sighandler_t = 3;
255 pub const SIG_ACK: ::sighandler_t = 4;
256 
257 // inline comment below appeases style checker
258 #[cfg(all(target_env = "msvc", feature = "rustc-dep-of-std"))] // " if "
259 #[link(name = "msvcrt", cfg(not(target_feature = "crt-static")))]
260 #[link(name = "libcmt", cfg(target_feature = "crt-static"))]
261 extern "C" {}
262 
263 #[cfg_attr(feature = "extra_traits", derive(Debug))]
264 pub enum FILE {}
265 impl ::Copy for FILE {}
266 impl ::Clone for FILE {
267     fn clone(&self) -> FILE {
268         *self
269     }
270 }
271 #[cfg_attr(feature = "extra_traits", derive(Debug))]
272 pub enum fpos_t {} // FIXME: fill this out with a struct
273 impl ::Copy for fpos_t {}
274 impl ::Clone for fpos_t {
275     fn clone(&self) -> fpos_t {
276         *self
277     }
278 }
279 
280 // Special handling for all print and scan type functions because of https://github.com/rust-lang/libc/issues/2860
281 cfg_if! {
282     if #[cfg(not(feature = "rustc-dep-of-std"))] {
283         #[cfg_attr(
284             all(windows, target_env = "msvc"),
285             link(name = "legacy_stdio_definitions")
286         )]
287         extern "C" {
288             pub fn printf(format: *const c_char, ...) -> ::c_int;
289             pub fn fprintf(stream: *mut FILE, format: *const c_char, ...) -> ::c_int;
290         }
291     }
292 }
293 
294 extern "C" {
295     pub fn isalnum(c: c_int) -> c_int;
296     pub fn isalpha(c: c_int) -> c_int;
297     pub fn iscntrl(c: c_int) -> c_int;
298     pub fn isdigit(c: c_int) -> c_int;
299     pub fn isgraph(c: c_int) -> c_int;
300     pub fn islower(c: c_int) -> c_int;
301     pub fn isprint(c: c_int) -> c_int;
302     pub fn ispunct(c: c_int) -> c_int;
303     pub fn isspace(c: c_int) -> c_int;
304     pub fn isupper(c: c_int) -> c_int;
305     pub fn isxdigit(c: c_int) -> c_int;
306     pub fn isblank(c: c_int) -> c_int;
307     pub fn tolower(c: c_int) -> c_int;
308     pub fn toupper(c: c_int) -> c_int;
309     pub fn fopen(filename: *const c_char, mode: *const c_char) -> *mut FILE;
310     pub fn freopen(filename: *const c_char, mode: *const c_char, file: *mut FILE) -> *mut FILE;
311     pub fn fflush(file: *mut FILE) -> c_int;
312     pub fn fclose(file: *mut FILE) -> c_int;
313     pub fn remove(filename: *const c_char) -> c_int;
314     pub fn rename(oldname: *const c_char, newname: *const c_char) -> c_int;
315     pub fn tmpfile() -> *mut FILE;
316     pub fn setvbuf(stream: *mut FILE, buffer: *mut c_char, mode: c_int, size: size_t) -> c_int;
317     pub fn setbuf(stream: *mut FILE, buf: *mut c_char);
318     pub fn getchar() -> c_int;
319     pub fn putchar(c: c_int) -> c_int;
320     pub fn fgetc(stream: *mut FILE) -> c_int;
321     pub fn fgets(buf: *mut c_char, n: c_int, stream: *mut FILE) -> *mut c_char;
322     pub fn fputc(c: c_int, stream: *mut FILE) -> c_int;
323     pub fn fputs(s: *const c_char, stream: *mut FILE) -> c_int;
324     pub fn puts(s: *const c_char) -> c_int;
325     pub fn ungetc(c: c_int, stream: *mut FILE) -> c_int;
326     pub fn fread(ptr: *mut c_void, size: size_t, nobj: size_t, stream: *mut FILE) -> size_t;
327     pub fn fwrite(ptr: *const c_void, size: size_t, nobj: size_t, stream: *mut FILE) -> size_t;
328     pub fn fseek(stream: *mut FILE, offset: c_long, whence: c_int) -> c_int;
329     pub fn ftell(stream: *mut FILE) -> c_long;
330     pub fn rewind(stream: *mut FILE);
331     pub fn fgetpos(stream: *mut FILE, ptr: *mut fpos_t) -> c_int;
332     pub fn fsetpos(stream: *mut FILE, ptr: *const fpos_t) -> c_int;
333     pub fn feof(stream: *mut FILE) -> c_int;
334     pub fn ferror(stream: *mut FILE) -> c_int;
335     pub fn perror(s: *const c_char);
336     pub fn atof(s: *const c_char) -> c_double;
337     pub fn atoi(s: *const c_char) -> c_int;
338     pub fn atol(s: *const c_char) -> c_long;
339     pub fn atoll(s: *const c_char) -> c_longlong;
340     pub fn strtod(s: *const c_char, endp: *mut *mut c_char) -> c_double;
341     pub fn strtof(s: *const c_char, endp: *mut *mut c_char) -> c_float;
342     pub fn strtol(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_long;
343     pub fn strtoll(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_longlong;
344     pub fn strtoul(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_ulong;
345     pub fn strtoull(s: *const c_char, endp: *mut *mut c_char, base: c_int) -> c_ulonglong;
346     pub fn calloc(nobj: size_t, size: size_t) -> *mut c_void;
347     pub fn malloc(size: size_t) -> *mut c_void;
348     pub fn realloc(p: *mut c_void, size: size_t) -> *mut c_void;
349     pub fn free(p: *mut c_void);
350     pub fn abort() -> !;
351     pub fn exit(status: c_int) -> !;
352     pub fn _exit(status: c_int) -> !;
353     pub fn atexit(cb: extern "C" fn()) -> c_int;
354     pub fn system(s: *const c_char) -> c_int;
355     pub fn getenv(s: *const c_char) -> *mut c_char;
356 
357     pub fn strcpy(dst: *mut c_char, src: *const c_char) -> *mut c_char;
358     pub fn strncpy(dst: *mut c_char, src: *const c_char, n: size_t) -> *mut c_char;
359     pub fn strcat(s: *mut c_char, ct: *const c_char) -> *mut c_char;
360     pub fn strncat(s: *mut c_char, ct: *const c_char, n: size_t) -> *mut c_char;
361     pub fn strcmp(cs: *const c_char, ct: *const c_char) -> c_int;
362     pub fn strncmp(cs: *const c_char, ct: *const c_char, n: size_t) -> c_int;
363     pub fn strcoll(cs: *const c_char, ct: *const c_char) -> c_int;
364     pub fn strchr(cs: *const c_char, c: c_int) -> *mut c_char;
365     pub fn strrchr(cs: *const c_char, c: c_int) -> *mut c_char;
366     pub fn strspn(cs: *const c_char, ct: *const c_char) -> size_t;
367     pub fn strcspn(cs: *const c_char, ct: *const c_char) -> size_t;
368     pub fn strdup(cs: *const c_char) -> *mut c_char;
369     pub fn strpbrk(cs: *const c_char, ct: *const c_char) -> *mut c_char;
370     pub fn strstr(cs: *const c_char, ct: *const c_char) -> *mut c_char;
371     pub fn strlen(cs: *const c_char) -> size_t;
372     pub fn strnlen(cs: *const c_char, maxlen: size_t) -> size_t;
373     pub fn strerror(n: c_int) -> *mut c_char;
374     pub fn strtok(s: *mut c_char, t: *const c_char) -> *mut c_char;
375     pub fn strxfrm(s: *mut c_char, ct: *const c_char, n: size_t) -> size_t;
376     pub fn wcslen(buf: *const wchar_t) -> size_t;
377     pub fn wcstombs(dest: *mut c_char, src: *const wchar_t, n: size_t) -> ::size_t;
378 
379     pub fn memchr(cx: *const c_void, c: c_int, n: size_t) -> *mut c_void;
380     pub fn memcmp(cx: *const c_void, ct: *const c_void, n: size_t) -> c_int;
381     pub fn memcpy(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
382     pub fn memmove(dest: *mut c_void, src: *const c_void, n: size_t) -> *mut c_void;
383     pub fn memset(dest: *mut c_void, c: c_int, n: size_t) -> *mut c_void;
384 
385     pub fn abs(i: c_int) -> c_int;
386     pub fn labs(i: c_long) -> c_long;
387     pub fn rand() -> c_int;
388     pub fn srand(seed: c_uint);
389 
390     pub fn signal(signum: c_int, handler: sighandler_t) -> sighandler_t;
391     pub fn raise(signum: c_int) -> c_int;
392 
393     #[link_name = "_gmtime64_s"]
394     pub fn gmtime_s(destTime: *mut tm, srcTime: *const time_t) -> ::c_int;
395     #[link_name = "_localtime64_s"]
396     pub fn localtime_s(tmDest: *mut tm, sourceTime: *const time_t) -> ::errno_t;
397     #[link_name = "_time64"]
398     pub fn time(destTime: *mut time_t) -> time_t;
399     #[link_name = "_chmod"]
400     pub fn chmod(path: *const c_char, mode: ::c_int) -> ::c_int;
401     #[link_name = "_wchmod"]
402     pub fn wchmod(path: *const wchar_t, mode: ::c_int) -> ::c_int;
403     #[link_name = "_mkdir"]
404     pub fn mkdir(path: *const c_char) -> ::c_int;
405     #[link_name = "_wrmdir"]
406     pub fn wrmdir(path: *const wchar_t) -> ::c_int;
407     #[link_name = "_fstat64"]
408     pub fn fstat(fildes: ::c_int, buf: *mut stat) -> ::c_int;
409     #[link_name = "_stat64"]
410     pub fn stat(path: *const c_char, buf: *mut stat) -> ::c_int;
411     #[link_name = "_wstat64"]
412     pub fn wstat(path: *const wchar_t, buf: *mut stat) -> ::c_int;
413     #[link_name = "_wutime64"]
414     pub fn wutime(file: *const wchar_t, buf: *mut utimbuf) -> ::c_int;
415     #[link_name = "_popen"]
416     pub fn popen(command: *const c_char, mode: *const c_char) -> *mut ::FILE;
417     #[link_name = "_pclose"]
418     pub fn pclose(stream: *mut ::FILE) -> ::c_int;
419     #[link_name = "_fdopen"]
420     pub fn fdopen(fd: ::c_int, mode: *const c_char) -> *mut ::FILE;
421     #[link_name = "_fileno"]
422     pub fn fileno(stream: *mut ::FILE) -> ::c_int;
423     #[link_name = "_open"]
424     pub fn open(path: *const c_char, oflag: ::c_int, ...) -> ::c_int;
425     #[link_name = "_wopen"]
426     pub fn wopen(path: *const wchar_t, oflag: ::c_int, ...) -> ::c_int;
427     #[link_name = "_creat"]
428     pub fn creat(path: *const c_char, mode: ::c_int) -> ::c_int;
429     #[link_name = "_access"]
430     pub fn access(path: *const c_char, amode: ::c_int) -> ::c_int;
431     #[link_name = "_chdir"]
432     pub fn chdir(dir: *const c_char) -> ::c_int;
433     #[link_name = "_close"]
434     pub fn close(fd: ::c_int) -> ::c_int;
435     #[link_name = "_dup"]
436     pub fn dup(fd: ::c_int) -> ::c_int;
437     #[link_name = "_dup2"]
438     pub fn dup2(src: ::c_int, dst: ::c_int) -> ::c_int;
439     #[link_name = "_execl"]
440     pub fn execl(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
441     #[link_name = "_wexecl"]
442     pub fn wexecl(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
443     #[link_name = "_execle"]
444     pub fn execle(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
445     #[link_name = "_wexecle"]
446     pub fn wexecle(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
447     #[link_name = "_execlp"]
448     pub fn execlp(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
449     #[link_name = "_wexeclp"]
450     pub fn wexeclp(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
451     #[link_name = "_execlpe"]
452     pub fn execlpe(path: *const c_char, arg0: *const c_char, ...) -> intptr_t;
453     #[link_name = "_wexeclpe"]
454     pub fn wexeclpe(path: *const wchar_t, arg0: *const wchar_t, ...) -> intptr_t;
455     #[link_name = "_execv"]
456     pub fn execv(prog: *const c_char, argv: *const *const c_char) -> ::intptr_t;
457     #[link_name = "_execve"]
458     pub fn execve(
459         prog: *const c_char,
460         argv: *const *const c_char,
461         envp: *const *const c_char,
462     ) -> ::c_int;
463     #[link_name = "_execvp"]
464     pub fn execvp(c: *const c_char, argv: *const *const c_char) -> ::c_int;
465     #[link_name = "_execvpe"]
466     pub fn execvpe(
467         c: *const c_char,
468         argv: *const *const c_char,
469         envp: *const *const c_char,
470     ) -> ::c_int;
471     #[link_name = "_wexecv"]
472     pub fn wexecv(prog: *const wchar_t, argv: *const *const wchar_t) -> ::intptr_t;
473     #[link_name = "_wexecve"]
474     pub fn wexecve(
475         prog: *const wchar_t,
476         argv: *const *const wchar_t,
477         envp: *const *const wchar_t,
478     ) -> ::intptr_t;
479     #[link_name = "_wexecvp"]
480     pub fn wexecvp(c: *const wchar_t, argv: *const *const wchar_t) -> ::intptr_t;
481     #[link_name = "_wexecvpe"]
482     pub fn wexecvpe(
483         c: *const wchar_t,
484         argv: *const *const wchar_t,
485         envp: *const *const wchar_t,
486     ) -> ::intptr_t;
487     #[link_name = "_getcwd"]
488     pub fn getcwd(buf: *mut c_char, size: ::c_int) -> *mut c_char;
489     #[link_name = "_getpid"]
490     pub fn getpid() -> ::c_int;
491     #[link_name = "_isatty"]
492     pub fn isatty(fd: ::c_int) -> ::c_int;
493     #[link_name = "_lseek"]
494     pub fn lseek(fd: ::c_int, offset: c_long, origin: ::c_int) -> c_long;
495     #[link_name = "_lseeki64"]
496     pub fn lseek64(fd: ::c_int, offset: c_longlong, origin: ::c_int) -> c_longlong;
497     #[link_name = "_pipe"]
498     pub fn pipe(fds: *mut ::c_int, psize: ::c_uint, textmode: ::c_int) -> ::c_int;
499     #[link_name = "_read"]
500     pub fn read(fd: ::c_int, buf: *mut ::c_void, count: ::c_uint) -> ::c_int;
501     #[link_name = "_rmdir"]
502     pub fn rmdir(path: *const c_char) -> ::c_int;
503     #[link_name = "_unlink"]
504     pub fn unlink(c: *const c_char) -> ::c_int;
505     #[link_name = "_write"]
506     pub fn write(fd: ::c_int, buf: *const ::c_void, count: ::c_uint) -> ::c_int;
507     #[link_name = "_commit"]
508     pub fn commit(fd: ::c_int) -> ::c_int;
509     #[link_name = "_get_osfhandle"]
510     pub fn get_osfhandle(fd: ::c_int) -> ::intptr_t;
511     #[link_name = "_open_osfhandle"]
512     pub fn open_osfhandle(osfhandle: ::intptr_t, flags: ::c_int) -> ::c_int;
513     pub fn setlocale(category: ::c_int, locale: *const c_char) -> *mut c_char;
514     #[link_name = "_wsetlocale"]
515     pub fn wsetlocale(category: ::c_int, locale: *const wchar_t) -> *mut wchar_t;
516     #[link_name = "_aligned_malloc"]
517     pub fn aligned_malloc(size: size_t, alignment: size_t) -> *mut c_void;
518     #[link_name = "_aligned_free"]
519     pub fn aligned_free(ptr: *mut ::c_void);
520     #[link_name = "_putenv"]
521     pub fn putenv(envstring: *const ::c_char) -> ::c_int;
522     #[link_name = "_wputenv"]
523     pub fn wputenv(envstring: *const ::wchar_t) -> ::c_int;
524     #[link_name = "_putenv_s"]
525     pub fn putenv_s(envstring: *const ::c_char, value_string: *const ::c_char) -> ::errno_t;
526     #[link_name = "_wputenv_s"]
527     pub fn wputenv_s(envstring: *const ::wchar_t, value_string: *const ::wchar_t) -> ::errno_t;
528 }
529 
530 extern "system" {
531     pub fn listen(s: SOCKET, backlog: ::c_int) -> ::c_int;
532     pub fn accept(s: SOCKET, addr: *mut ::sockaddr, addrlen: *mut ::c_int) -> SOCKET;
533     pub fn bind(s: SOCKET, name: *const ::sockaddr, namelen: ::c_int) -> ::c_int;
534     pub fn connect(s: SOCKET, name: *const ::sockaddr, namelen: ::c_int) -> ::c_int;
535     pub fn getpeername(s: SOCKET, name: *mut ::sockaddr, nameln: *mut ::c_int) -> ::c_int;
536     pub fn getsockname(s: SOCKET, name: *mut ::sockaddr, nameln: *mut ::c_int) -> ::c_int;
537     pub fn getsockopt(
538         s: SOCKET,
539         level: ::c_int,
540         optname: ::c_int,
541         optval: *mut ::c_char,
542         optlen: *mut ::c_int,
543     ) -> ::c_int;
544     pub fn recvfrom(
545         s: SOCKET,
546         buf: *mut ::c_char,
547         len: ::c_int,
548         flags: ::c_int,
549         from: *mut ::sockaddr,
550         fromlen: *mut ::c_int,
551     ) -> ::c_int;
552     pub fn sendto(
553         s: SOCKET,
554         buf: *const ::c_char,
555         len: ::c_int,
556         flags: ::c_int,
557         to: *const ::sockaddr,
558         tolen: ::c_int,
559     ) -> ::c_int;
560     pub fn setsockopt(
561         s: SOCKET,
562         level: ::c_int,
563         optname: ::c_int,
564         optval: *const ::c_char,
565         optlen: ::c_int,
566     ) -> ::c_int;
567     pub fn socket(af: ::c_int, socket_type: ::c_int, protocol: ::c_int) -> SOCKET;
568 }
569 
570 cfg_if! {
571     if #[cfg(libc_core_cvoid)] {
572         pub use ::ffi::c_void;
573     } else {
574         // Use repr(u8) as LLVM expects `void*` to be the same as `i8*` to help
575         // enable more optimization opportunities around it recognizing things
576         // like malloc/free.
577         #[repr(u8)]
578         #[allow(missing_copy_implementations)]
579         #[allow(missing_debug_implementations)]
580         pub enum c_void {
581             // Two dummy variants so the #[repr] attribute can be used.
582             #[doc(hidden)]
583             __variant1,
584             #[doc(hidden)]
585             __variant2,
586         }
587     }
588 }
589 
590 cfg_if! {
591     if #[cfg(all(target_env = "gnu"))] {
592         mod gnu;
593         pub use self::gnu::*;
594     } else if #[cfg(all(target_env = "msvc"))] {
595         mod msvc;
596         pub use self::msvc::*;
597     } else {
598         // Unknown target_env
599     }
600 }
601