xref: /rust-libc-0.2.174/src/unix/mod.rs (revision 0ac10285)
1 //! Definitions found commonly among almost all Unix derivatives
2 //!
3 //! More functions and definitions can be found in the more specific modules
4 //! according to the platform in question.
5 
6 pub type c_schar = i8;
7 pub type c_uchar = u8;
8 pub type c_short = i16;
9 pub type c_ushort = u16;
10 pub type c_int = i32;
11 pub type c_uint = u32;
12 pub type c_float = f32;
13 pub type c_double = f64;
14 pub type c_longlong = i64;
15 pub type c_ulonglong = u64;
16 pub type intmax_t = i64;
17 pub type uintmax_t = u64;
18 
19 pub type size_t = usize;
20 pub type ptrdiff_t = isize;
21 pub type intptr_t = isize;
22 pub type uintptr_t = usize;
23 pub type ssize_t = isize;
24 
25 pub type pid_t = i32;
26 pub type uid_t = u32;
27 pub type gid_t = u32;
28 pub type in_addr_t = u32;
29 pub type in_port_t = u16;
30 pub type sighandler_t = ::size_t;
31 pub type cc_t = ::c_uchar;
32 
33 #[cfg_attr(feature = "extra_traits", derive(Debug))]
34 pub enum DIR {}
35 impl ::Copy for DIR {}
36 impl ::Clone for DIR {
37     fn clone(&self) -> DIR {
38         *self
39     }
40 }
41 pub type locale_t = *mut ::c_void;
42 
43 s! {
44     pub struct group {
45         pub gr_name: *mut ::c_char,
46         pub gr_passwd: *mut ::c_char,
47         pub gr_gid: ::gid_t,
48         pub gr_mem: *mut *mut ::c_char,
49     }
50 
51     pub struct utimbuf {
52         pub actime: time_t,
53         pub modtime: time_t,
54     }
55 
56     pub struct timeval {
57         pub tv_sec: time_t,
58         pub tv_usec: suseconds_t,
59     }
60 
61     // linux x32 compatibility
62     // See https://sourceware.org/bugzilla/show_bug.cgi?id=16437
63     pub struct timespec {
64         pub tv_sec: time_t,
65         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
66         pub tv_nsec: i64,
67         #[cfg(not(all(target_arch = "x86_64", target_pointer_width = "32")))]
68         pub tv_nsec: ::c_long,
69     }
70 
71     pub struct rlimit {
72         pub rlim_cur: rlim_t,
73         pub rlim_max: rlim_t,
74     }
75 
76     pub struct rusage {
77         pub ru_utime: timeval,
78         pub ru_stime: timeval,
79         pub ru_maxrss: c_long,
80         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
81         __pad1: u32,
82         pub ru_ixrss: c_long,
83         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
84         __pad2: u32,
85         pub ru_idrss: c_long,
86         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
87         __pad3: u32,
88         pub ru_isrss: c_long,
89         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
90         __pad4: u32,
91         pub ru_minflt: c_long,
92         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
93         __pad5: u32,
94         pub ru_majflt: c_long,
95         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
96         __pad6: u32,
97         pub ru_nswap: c_long,
98         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
99         __pad7: u32,
100         pub ru_inblock: c_long,
101         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
102         __pad8: u32,
103         pub ru_oublock: c_long,
104         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
105         __pad9: u32,
106         pub ru_msgsnd: c_long,
107         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
108         __pad10: u32,
109         pub ru_msgrcv: c_long,
110         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
111         __pad11: u32,
112         pub ru_nsignals: c_long,
113         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
114         __pad12: u32,
115         pub ru_nvcsw: c_long,
116         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
117         __pad13: u32,
118         pub ru_nivcsw: c_long,
119         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
120         __pad14: u32,
121 
122         #[cfg(any(target_env = "musl", target_os = "emscripten"))]
123         __reserved: [c_long; 16],
124     }
125 
126     pub struct ipv6_mreq {
127         pub ipv6mr_multiaddr: in6_addr,
128         #[cfg(target_os = "android")]
129         pub ipv6mr_interface: ::c_int,
130         #[cfg(not(target_os = "android"))]
131         pub ipv6mr_interface: ::c_uint,
132     }
133 
134     pub struct hostent {
135         pub h_name: *mut ::c_char,
136         pub h_aliases: *mut *mut ::c_char,
137         pub h_addrtype: ::c_int,
138         pub h_length: ::c_int,
139         pub h_addr_list: *mut *mut ::c_char,
140     }
141 
142     pub struct iovec {
143         pub iov_base: *mut ::c_void,
144         pub iov_len: ::size_t,
145     }
146 
147     pub struct pollfd {
148         pub fd: ::c_int,
149         pub events: ::c_short,
150         pub revents: ::c_short,
151     }
152 
153     pub struct winsize {
154         pub ws_row: ::c_ushort,
155         pub ws_col: ::c_ushort,
156         pub ws_xpixel: ::c_ushort,
157         pub ws_ypixel: ::c_ushort,
158     }
159 
160     pub struct linger {
161         pub l_onoff: ::c_int,
162         pub l_linger: ::c_int,
163     }
164 
165     pub struct sigval {
166         // Actually a union of an int and a void*
167         pub sival_ptr: *mut ::c_void
168     }
169 
170     // <sys/time.h>
171     pub struct itimerval {
172         pub it_interval: ::timeval,
173         pub it_value: ::timeval,
174     }
175 
176     // <sys/times.h>
177     pub struct tms {
178         pub tms_utime: ::clock_t,
179         pub tms_stime: ::clock_t,
180         pub tms_cutime: ::clock_t,
181         pub tms_cstime: ::clock_t,
182     }
183 
184     pub struct servent {
185         pub s_name: *mut ::c_char,
186         pub s_aliases: *mut *mut ::c_char,
187         pub s_port: ::c_int,
188         pub s_proto: *mut ::c_char,
189     }
190 
191     pub struct protoent {
192         pub p_name: *mut ::c_char,
193         pub p_aliases: *mut *mut ::c_char,
194         pub p_proto: ::c_int,
195     }
196 }
197 
198 pub const INT_MIN: c_int = -2147483648;
199 pub const INT_MAX: c_int = 2147483647;
200 
201 pub const SIG_DFL: sighandler_t = 0 as sighandler_t;
202 pub const SIG_IGN: sighandler_t = 1 as sighandler_t;
203 pub const SIG_ERR: sighandler_t = !0 as sighandler_t;
204 
205 pub const DT_UNKNOWN: u8 = 0;
206 pub const DT_FIFO: u8 = 1;
207 pub const DT_CHR: u8 = 2;
208 pub const DT_DIR: u8 = 4;
209 pub const DT_BLK: u8 = 6;
210 pub const DT_REG: u8 = 8;
211 pub const DT_LNK: u8 = 10;
212 pub const DT_SOCK: u8 = 12;
213 
214 cfg_if! {
215     if #[cfg(not(target_os = "redox"))] {
216         pub const FD_CLOEXEC: ::c_int = 0x1;
217     }
218 }
219 
220 pub const USRQUOTA: ::c_int = 0;
221 pub const GRPQUOTA: ::c_int = 1;
222 
223 pub const SIGIOT: ::c_int = 6;
224 
225 pub const S_ISUID: ::mode_t = 0x800;
226 pub const S_ISGID: ::mode_t = 0x400;
227 pub const S_ISVTX: ::mode_t = 0x200;
228 
229 cfg_if! {
230     if #[cfg(not(any(target_os = "haiku", target_os = "illumos",
231                      target_os = "solaris")))] {
232         pub const IF_NAMESIZE: ::size_t = 16;
233         pub const IFNAMSIZ: ::size_t = IF_NAMESIZE;
234     }
235 }
236 
237 pub const LOG_EMERG: ::c_int = 0;
238 pub const LOG_ALERT: ::c_int = 1;
239 pub const LOG_CRIT: ::c_int = 2;
240 pub const LOG_ERR: ::c_int = 3;
241 pub const LOG_WARNING: ::c_int = 4;
242 pub const LOG_NOTICE: ::c_int = 5;
243 pub const LOG_INFO: ::c_int = 6;
244 pub const LOG_DEBUG: ::c_int = 7;
245 
246 pub const LOG_KERN: ::c_int = 0;
247 pub const LOG_USER: ::c_int = 1 << 3;
248 pub const LOG_MAIL: ::c_int = 2 << 3;
249 pub const LOG_DAEMON: ::c_int = 3 << 3;
250 pub const LOG_AUTH: ::c_int = 4 << 3;
251 pub const LOG_SYSLOG: ::c_int = 5 << 3;
252 pub const LOG_LPR: ::c_int = 6 << 3;
253 pub const LOG_NEWS: ::c_int = 7 << 3;
254 pub const LOG_UUCP: ::c_int = 8 << 3;
255 pub const LOG_LOCAL0: ::c_int = 16 << 3;
256 pub const LOG_LOCAL1: ::c_int = 17 << 3;
257 pub const LOG_LOCAL2: ::c_int = 18 << 3;
258 pub const LOG_LOCAL3: ::c_int = 19 << 3;
259 pub const LOG_LOCAL4: ::c_int = 20 << 3;
260 pub const LOG_LOCAL5: ::c_int = 21 << 3;
261 pub const LOG_LOCAL6: ::c_int = 22 << 3;
262 pub const LOG_LOCAL7: ::c_int = 23 << 3;
263 
264 cfg_if! {
265     if #[cfg(not(target_os = "haiku"))] {
266         pub const LOG_PID: ::c_int = 0x01;
267         pub const LOG_CONS: ::c_int = 0x02;
268         pub const LOG_ODELAY: ::c_int = 0x04;
269         pub const LOG_NDELAY: ::c_int = 0x08;
270         pub const LOG_NOWAIT: ::c_int = 0x10;
271     }
272 }
273 pub const LOG_PRIMASK: ::c_int = 7;
274 pub const LOG_FACMASK: ::c_int = 0x3f8;
275 
276 pub const PRIO_MIN: ::c_int = -20;
277 pub const PRIO_MAX: ::c_int = 20;
278 
279 pub const IPPROTO_ICMP: ::c_int = 1;
280 pub const IPPROTO_ICMPV6: ::c_int = 58;
281 pub const IPPROTO_TCP: ::c_int = 6;
282 pub const IPPROTO_UDP: ::c_int = 17;
283 pub const IPPROTO_IP: ::c_int = 0;
284 pub const IPPROTO_IPV6: ::c_int = 41;
285 
286 pub const INADDR_LOOPBACK: in_addr_t = 2130706433;
287 pub const INADDR_ANY: in_addr_t = 0;
288 pub const INADDR_BROADCAST: in_addr_t = 4294967295;
289 pub const INADDR_NONE: in_addr_t = 4294967295;
290 
291 pub const ARPOP_REQUEST: u16 = 1;
292 pub const ARPOP_REPLY: u16 = 2;
293 
294 pub const ATF_COM: ::c_int = 0x02;
295 pub const ATF_PERM: ::c_int = 0x04;
296 pub const ATF_PUBL: ::c_int = 0x08;
297 pub const ATF_USETRAILERS: ::c_int = 0x10;
298 
299 cfg_if! {
300     if #[cfg(target_os = "l4re")] {
301         // required libraries for L4Re are linked externally, ATM
302     } else if #[cfg(feature = "std")] {
303         // cargo build, don't pull in anything extra as the libstd dep
304         // already pulls in all libs.
305     } else if #[cfg(all(target_os = "linux",
306                         any(target_env = "gnu", target_env = "uclibc"),
307                         feature = "rustc-dep-of-std"))] {
308         #[link(name = "util", kind = "static-nobundle",
309             cfg(target_feature = "crt-static"))]
310         #[link(name = "rt", kind = "static-nobundle",
311             cfg(target_feature = "crt-static"))]
312         #[link(name = "pthread", kind = "static-nobundle",
313             cfg(target_feature = "crt-static"))]
314         #[link(name = "m", kind = "static-nobundle",
315             cfg(target_feature = "crt-static"))]
316         #[link(name = "dl", kind = "static-nobundle",
317             cfg(target_feature = "crt-static"))]
318         #[link(name = "c", kind = "static-nobundle",
319             cfg(target_feature = "crt-static"))]
320         #[link(name = "gcc_eh", kind = "static-nobundle",
321             cfg(target_feature = "crt-static"))]
322         #[link(name = "gcc", kind = "static-nobundle",
323             cfg(target_feature = "crt-static"))]
324         #[link(name = "util", cfg(not(target_feature = "crt-static")))]
325         #[link(name = "rt", cfg(not(target_feature = "crt-static")))]
326         #[link(name = "pthread", cfg(not(target_feature = "crt-static")))]
327         #[link(name = "m", cfg(not(target_feature = "crt-static")))]
328         #[link(name = "dl", cfg(not(target_feature = "crt-static")))]
329         #[link(name = "c", cfg(not(target_feature = "crt-static")))]
330         extern {}
331     } else if #[cfg(target_env = "musl")] {
332         #[cfg_attr(feature = "rustc-dep-of-std",
333                    link(name = "c", kind = "static",
334                         cfg(target_feature = "crt-static")))]
335         #[cfg_attr(feature = "rustc-dep-of-std",
336                    link(name = "c", cfg(not(target_feature = "crt-static"))))]
337         extern {}
338     } else if #[cfg(target_os = "emscripten")] {
339         #[link(name = "c")]
340         extern {}
341     } else if #[cfg(all(target_os = "netbsd",
342                         feature = "rustc-dep-of-std",
343                         target_vendor = "rumprun"))] {
344         // Since we don't use -nodefaultlibs on Rumprun, libc is always pulled
345         // in automatically by the linker. We avoid passing it explicitly, as it
346         // causes some versions of binutils to crash with an assertion failure.
347         #[link(name = "m")]
348         extern {}
349     } else if #[cfg(any(target_os = "macos",
350                         target_os = "ios",
351                         target_os = "android",
352                         target_os = "openbsd"))] {
353         #[link(name = "c")]
354         #[link(name = "m")]
355         extern {}
356     } else if #[cfg(target_os = "haiku")] {
357         #[link(name = "root")]
358         #[link(name = "network")]
359         extern {}
360     } else if #[cfg(target_env = "newlib")] {
361         #[link(name = "c")]
362         #[link(name = "m")]
363         extern {}
364     } else if #[cfg(target_os = "hermit")] {
365         // no_default_libraries is set to false for HermitCore, so only a link
366         // to "pthread" needs to be added.
367         #[link(name = "pthread")]
368         extern {}
369     } else if #[cfg(target_env = "illumos")] {
370         #[link(name = "c")]
371         #[link(name = "m")]
372         extern {}
373     } else if #[cfg(target_os = "redox")] {
374         #[cfg_attr(feature = "rustc-dep-of-std",
375                    link(name = "c", kind = "static-nobundle",
376                         cfg(target_feature = "crt-static")))]
377         #[cfg_attr(feature = "rustc-dep-of-std",
378                    link(name = "c", cfg(not(target_feature = "crt-static"))))]
379         extern {}
380     } else {
381         #[link(name = "c")]
382         #[link(name = "m")]
383         #[link(name = "rt")]
384         #[link(name = "pthread")]
385         extern {}
386     }
387 }
388 
389 #[cfg_attr(feature = "extra_traits", derive(Debug))]
390 pub enum FILE {}
391 impl ::Copy for FILE {}
392 impl ::Clone for FILE {
393     fn clone(&self) -> FILE {
394         *self
395     }
396 }
397 #[cfg_attr(feature = "extra_traits", derive(Debug))]
398 pub enum fpos_t {} // FIXME: fill this out with a struct
399 impl ::Copy for fpos_t {}
400 impl ::Clone for fpos_t {
401     fn clone(&self) -> fpos_t {
402         *self
403     }
404 }
405 
406 extern "C" {
407     pub fn isalnum(c: c_int) -> c_int;
408     pub fn isalpha(c: c_int) -> c_int;
409     pub fn iscntrl(c: c_int) -> c_int;
410     pub fn isdigit(c: c_int) -> c_int;
411     pub fn isgraph(c: c_int) -> c_int;
412     pub fn islower(c: c_int) -> c_int;
413     pub fn isprint(c: c_int) -> c_int;
414     pub fn ispunct(c: c_int) -> c_int;
415     pub fn isspace(c: c_int) -> c_int;
416     pub fn isupper(c: c_int) -> c_int;
417     pub fn isxdigit(c: c_int) -> c_int;
418     pub fn isblank(c: c_int) -> c_int;
419     pub fn tolower(c: c_int) -> c_int;
420     pub fn toupper(c: c_int) -> c_int;
421     pub fn qsort(
422         base: *mut c_void,
423         num: size_t,
424         size: size_t,
425         compar: ::Option<
426             unsafe extern "C" fn(*const c_void, *const c_void) -> c_int,
427         >,
428     );
429     pub fn bsearch(
430         key: *const c_void,
431         base: *const c_void,
432         num: size_t,
433         size: size_t,
434         compar: ::Option<
435             unsafe extern "C" fn(*const c_void, *const c_void) -> c_int,
436         >,
437     ) -> *mut c_void;
438     #[cfg_attr(
439         all(target_os = "macos", target_arch = "x86"),
440         link_name = "fopen$UNIX2003"
441     )]
442     pub fn fopen(filename: *const c_char, mode: *const c_char) -> *mut FILE;
443     #[cfg_attr(
444         all(target_os = "macos", target_arch = "x86"),
445         link_name = "freopen$UNIX2003"
446     )]
447     pub fn freopen(
448         filename: *const c_char,
449         mode: *const c_char,
450         file: *mut FILE,
451     ) -> *mut FILE;
452     pub fn fmemopen(
453         buf: *mut c_void,
454         size: size_t,
455         mode: *const c_char,
456     ) -> *mut FILE;
457     pub fn open_memstream(
458         ptr: *mut *mut c_char,
459         sizeloc: *mut size_t,
460     ) -> *mut FILE;
461 
462     pub fn fflush(file: *mut FILE) -> c_int;
463     pub fn fclose(file: *mut FILE) -> c_int;
464     pub fn remove(filename: *const c_char) -> c_int;
465     pub fn rename(oldname: *const c_char, newname: *const c_char) -> c_int;
466     pub fn tmpfile() -> *mut FILE;
467     pub fn setvbuf(
468         stream: *mut FILE,
469         buffer: *mut c_char,
470         mode: c_int,
471         size: size_t,
472     ) -> c_int;
473     pub fn setbuf(stream: *mut FILE, buf: *mut c_char);
474     pub fn getchar() -> c_int;
475     pub fn putchar(c: c_int) -> c_int;
476     pub fn fgetc(stream: *mut FILE) -> c_int;
477     pub fn fgets(buf: *mut c_char, n: c_int, stream: *mut FILE)
478         -> *mut c_char;
479     pub fn fputc(c: c_int, stream: *mut FILE) -> c_int;
480     #[cfg_attr(
481         all(target_os = "macos", target_arch = "x86"),
482         link_name = "fputs$UNIX2003"
483     )]
484     pub fn fputs(s: *const c_char, stream: *mut FILE) -> c_int;
485     pub fn puts(s: *const c_char) -> c_int;
486     pub fn ungetc(c: c_int, stream: *mut FILE) -> c_int;
487     pub fn fread(
488         ptr: *mut c_void,
489         size: size_t,
490         nobj: size_t,
491         stream: *mut FILE,
492     ) -> size_t;
493     #[cfg_attr(
494         all(target_os = "macos", target_arch = "x86"),
495         link_name = "fwrite$UNIX2003"
496     )]
497     pub fn fwrite(
498         ptr: *const c_void,
499         size: size_t,
500         nobj: size_t,
501         stream: *mut FILE,
502     ) -> size_t;
503     pub fn fseek(stream: *mut FILE, offset: c_long, whence: c_int) -> c_int;
504     pub fn ftell(stream: *mut FILE) -> c_long;
505     pub fn rewind(stream: *mut FILE);
506     #[cfg_attr(target_os = "netbsd", link_name = "__fgetpos50")]
507     pub fn fgetpos(stream: *mut FILE, ptr: *mut fpos_t) -> c_int;
508     #[cfg_attr(target_os = "netbsd", link_name = "__fsetpos50")]
509     pub fn fsetpos(stream: *mut FILE, ptr: *const fpos_t) -> c_int;
510     pub fn feof(stream: *mut FILE) -> c_int;
511     pub fn ferror(stream: *mut FILE) -> c_int;
512     pub fn clearerr(stream: *mut FILE);
513     pub fn perror(s: *const c_char);
514     pub fn atoi(s: *const c_char) -> c_int;
515     #[cfg_attr(
516         all(target_os = "macos", target_arch = "x86"),
517         link_name = "strtod$UNIX2003"
518     )]
519     pub fn strtod(s: *const c_char, endp: *mut *mut c_char) -> c_double;
520     pub fn strtol(
521         s: *const c_char,
522         endp: *mut *mut c_char,
523         base: c_int,
524     ) -> c_long;
525     pub fn strtoul(
526         s: *const c_char,
527         endp: *mut *mut c_char,
528         base: c_int,
529     ) -> c_ulong;
530     pub fn calloc(nobj: size_t, size: size_t) -> *mut c_void;
531     pub fn malloc(size: size_t) -> *mut c_void;
532     pub fn realloc(p: *mut c_void, size: size_t) -> *mut c_void;
533     pub fn free(p: *mut c_void);
534     pub fn abort() -> !;
535     pub fn exit(status: c_int) -> !;
536     pub fn _exit(status: c_int) -> !;
537     pub fn atexit(cb: extern "C" fn()) -> c_int;
538     #[cfg_attr(
539         all(target_os = "macos", target_arch = "x86"),
540         link_name = "system$UNIX2003"
541     )]
542     pub fn system(s: *const c_char) -> c_int;
543     pub fn getenv(s: *const c_char) -> *mut c_char;
544 
545     pub fn strcpy(dst: *mut c_char, src: *const c_char) -> *mut c_char;
546     pub fn strncpy(
547         dst: *mut c_char,
548         src: *const c_char,
549         n: size_t,
550     ) -> *mut c_char;
551     pub fn strcat(s: *mut c_char, ct: *const c_char) -> *mut c_char;
552     pub fn strncat(
553         s: *mut c_char,
554         ct: *const c_char,
555         n: size_t,
556     ) -> *mut c_char;
557     pub fn strcmp(cs: *const c_char, ct: *const c_char) -> c_int;
558     pub fn strncmp(cs: *const c_char, ct: *const c_char, n: size_t) -> c_int;
559     pub fn strcoll(cs: *const c_char, ct: *const c_char) -> c_int;
560     pub fn strchr(cs: *const c_char, c: c_int) -> *mut c_char;
561     pub fn strrchr(cs: *const c_char, c: c_int) -> *mut c_char;
562     pub fn strspn(cs: *const c_char, ct: *const c_char) -> size_t;
563     pub fn strcspn(cs: *const c_char, ct: *const c_char) -> size_t;
564     pub fn strdup(cs: *const c_char) -> *mut c_char;
565     pub fn strndup(cs: *const c_char, n: size_t) -> *mut c_char;
566     pub fn strpbrk(cs: *const c_char, ct: *const c_char) -> *mut c_char;
567     pub fn strstr(cs: *const c_char, ct: *const c_char) -> *mut c_char;
568     pub fn strcasecmp(s1: *const c_char, s2: *const c_char) -> c_int;
569     pub fn strncasecmp(
570         s1: *const c_char,
571         s2: *const c_char,
572         n: size_t,
573     ) -> c_int;
574     pub fn strlen(cs: *const c_char) -> size_t;
575     pub fn strnlen(cs: *const c_char, maxlen: size_t) -> size_t;
576     #[cfg_attr(
577         all(target_os = "macos", target_arch = "x86"),
578         link_name = "strerror$UNIX2003"
579     )]
580     pub fn strerror(n: c_int) -> *mut c_char;
581     pub fn strtok(s: *mut c_char, t: *const c_char) -> *mut c_char;
582     pub fn strxfrm(s: *mut c_char, ct: *const c_char, n: size_t) -> size_t;
583     pub fn strsignal(sig: c_int) -> *mut c_char;
584     pub fn wcslen(buf: *const wchar_t) -> size_t;
585     pub fn wcstombs(
586         dest: *mut c_char,
587         src: *const wchar_t,
588         n: size_t,
589     ) -> ::size_t;
590 
591     pub fn memchr(cx: *const c_void, c: c_int, n: size_t) -> *mut c_void;
592     pub fn wmemchr(cx: *const wchar_t, c: wchar_t, n: size_t) -> *mut wchar_t;
593     pub fn memcmp(cx: *const c_void, ct: *const c_void, n: size_t) -> c_int;
594     pub fn memcpy(
595         dest: *mut c_void,
596         src: *const c_void,
597         n: size_t,
598     ) -> *mut c_void;
599     pub fn memmove(
600         dest: *mut c_void,
601         src: *const c_void,
602         n: size_t,
603     ) -> *mut c_void;
604     pub fn memset(dest: *mut c_void, c: c_int, n: size_t) -> *mut c_void;
605 }
606 
607 extern "C" {
608     #[cfg_attr(target_os = "netbsd", link_name = "__getpwnam50")]
609     pub fn getpwnam(name: *const ::c_char) -> *mut passwd;
610     #[cfg_attr(target_os = "netbsd", link_name = "__getpwuid50")]
611     pub fn getpwuid(uid: ::uid_t) -> *mut passwd;
612 
613     pub fn fprintf(
614         stream: *mut ::FILE,
615         format: *const ::c_char,
616         ...
617     ) -> ::c_int;
618     pub fn printf(format: *const ::c_char, ...) -> ::c_int;
619     pub fn snprintf(
620         s: *mut ::c_char,
621         n: ::size_t,
622         format: *const ::c_char,
623         ...
624     ) -> ::c_int;
625     pub fn sprintf(s: *mut ::c_char, format: *const ::c_char, ...) -> ::c_int;
626     #[cfg_attr(all(target_os = "linux", not(target_env = "uclibc")),
627                link_name = "__isoc99_fscanf")]
628     pub fn fscanf(
629         stream: *mut ::FILE,
630         format: *const ::c_char,
631         ...
632     ) -> ::c_int;
633     #[cfg_attr(all(target_os = "linux", not(target_env = "uclibc")),
634                link_name = "__isoc99_scanf")]
635     pub fn scanf(format: *const ::c_char, ...) -> ::c_int;
636     #[cfg_attr(all(target_os = "linux", not(target_env = "uclibc")),
637                link_name = "__isoc99_sscanf")]
638     pub fn sscanf(s: *const ::c_char, format: *const ::c_char, ...)
639         -> ::c_int;
640     pub fn getchar_unlocked() -> ::c_int;
641     pub fn putchar_unlocked(c: ::c_int) -> ::c_int;
642 
643     #[cfg(not(all(
644         libc_cfg_target_vendor,
645         target_arch = "powerpc",
646         target_vendor = "nintendo"
647     )))]
648     #[cfg_attr(target_os = "netbsd", link_name = "__socket30")]
649     #[cfg_attr(target_os = "illumos", link_name = "__xnet_socket")]
650     pub fn socket(domain: ::c_int, ty: ::c_int, protocol: ::c_int) -> ::c_int;
651     #[cfg(not(all(
652         libc_cfg_target_vendor,
653         target_arch = "powerpc",
654         target_vendor = "nintendo"
655     )))]
656     #[cfg_attr(
657         all(target_os = "macos", target_arch = "x86"),
658         link_name = "connect$UNIX2003"
659     )]
660     #[cfg_attr(target_os = "illumos", link_name = "__xnet_connect")]
661     pub fn connect(
662         socket: ::c_int,
663         address: *const sockaddr,
664         len: socklen_t,
665     ) -> ::c_int;
666     #[cfg_attr(
667         all(target_os = "macos", target_arch = "x86"),
668         link_name = "listen$UNIX2003"
669     )]
670     pub fn listen(socket: ::c_int, backlog: ::c_int) -> ::c_int;
671     #[cfg(not(all(
672         libc_cfg_target_vendor,
673         target_arch = "powerpc",
674         target_vendor = "nintendo"
675     )))]
676     #[cfg_attr(
677         all(target_os = "macos", target_arch = "x86"),
678         link_name = "accept$UNIX2003"
679     )]
680     pub fn accept(
681         socket: ::c_int,
682         address: *mut sockaddr,
683         address_len: *mut socklen_t,
684     ) -> ::c_int;
685     #[cfg(not(all(
686         libc_cfg_target_vendor,
687         target_arch = "powerpc",
688         target_vendor = "nintendo"
689     )))]
690     #[cfg_attr(
691         all(target_os = "macos", target_arch = "x86"),
692         link_name = "getpeername$UNIX2003"
693     )]
694     pub fn getpeername(
695         socket: ::c_int,
696         address: *mut sockaddr,
697         address_len: *mut socklen_t,
698     ) -> ::c_int;
699     #[cfg(not(all(
700         libc_cfg_target_vendor,
701         target_arch = "powerpc",
702         target_vendor = "nintendo"
703     )))]
704     #[cfg_attr(
705         all(target_os = "macos", target_arch = "x86"),
706         link_name = "getsockname$UNIX2003"
707     )]
708     pub fn getsockname(
709         socket: ::c_int,
710         address: *mut sockaddr,
711         address_len: *mut socklen_t,
712     ) -> ::c_int;
713     pub fn setsockopt(
714         socket: ::c_int,
715         level: ::c_int,
716         name: ::c_int,
717         value: *const ::c_void,
718         option_len: socklen_t,
719     ) -> ::c_int;
720     #[cfg_attr(
721         all(target_os = "macos", target_arch = "x86"),
722         link_name = "socketpair$UNIX2003"
723     )]
724     #[cfg_attr(target_os = "illumos", link_name = "__xnet_socketpair")]
725     pub fn socketpair(
726         domain: ::c_int,
727         type_: ::c_int,
728         protocol: ::c_int,
729         socket_vector: *mut ::c_int,
730     ) -> ::c_int;
731     #[cfg(not(all(
732         libc_cfg_target_vendor,
733         target_arch = "powerpc",
734         target_vendor = "nintendo"
735     )))]
736     #[cfg_attr(
737         all(target_os = "macos", target_arch = "x86"),
738         link_name = "sendto$UNIX2003"
739     )]
740     #[cfg_attr(target_os = "illumos", link_name = "__xnet_sendto")]
741     pub fn sendto(
742         socket: ::c_int,
743         buf: *const ::c_void,
744         len: ::size_t,
745         flags: ::c_int,
746         addr: *const sockaddr,
747         addrlen: socklen_t,
748     ) -> ::ssize_t;
749     pub fn shutdown(socket: ::c_int, how: ::c_int) -> ::c_int;
750 
751     #[cfg_attr(
752         all(target_os = "macos", target_arch = "x86"),
753         link_name = "chmod$UNIX2003"
754     )]
755     pub fn chmod(path: *const c_char, mode: mode_t) -> ::c_int;
756     #[cfg_attr(
757         all(target_os = "macos", target_arch = "x86"),
758         link_name = "fchmod$UNIX2003"
759     )]
760     pub fn fchmod(fd: ::c_int, mode: mode_t) -> ::c_int;
761 
762     #[cfg_attr(
763         all(target_os = "macos", not(target_arch = "aarch64")),
764         link_name = "fstat$INODE64"
765     )]
766     #[cfg_attr(target_os = "netbsd", link_name = "__fstat50")]
767     #[cfg_attr(
768         all(target_os = "freebsd", any(freebsd11, freebsd10)),
769         link_name = "fstat@FBSD_1.0"
770     )]
771     pub fn fstat(fildes: ::c_int, buf: *mut stat) -> ::c_int;
772 
773     pub fn mkdir(path: *const c_char, mode: mode_t) -> ::c_int;
774 
775     #[cfg_attr(
776         all(target_os = "macos", not(target_arch = "aarch64")),
777         link_name = "stat$INODE64"
778     )]
779     #[cfg_attr(target_os = "netbsd", link_name = "__stat50")]
780     #[cfg_attr(
781         all(target_os = "freebsd", any(freebsd11, freebsd10)),
782         link_name = "stat@FBSD_1.0"
783     )]
784     pub fn stat(path: *const c_char, buf: *mut stat) -> ::c_int;
785 
786     pub fn pclose(stream: *mut ::FILE) -> ::c_int;
787     #[cfg_attr(
788         all(target_os = "macos", target_arch = "x86"),
789         link_name = "fdopen$UNIX2003"
790     )]
791     pub fn fdopen(fd: ::c_int, mode: *const c_char) -> *mut ::FILE;
792     pub fn fileno(stream: *mut ::FILE) -> ::c_int;
793 
794     #[cfg_attr(
795         all(target_os = "macos", target_arch = "x86"),
796         link_name = "open$UNIX2003"
797     )]
798     pub fn open(path: *const c_char, oflag: ::c_int, ...) -> ::c_int;
799     #[cfg_attr(
800         all(target_os = "macos", target_arch = "x86"),
801         link_name = "creat$UNIX2003"
802     )]
803     pub fn creat(path: *const c_char, mode: mode_t) -> ::c_int;
804     #[cfg_attr(
805         all(target_os = "macos", target_arch = "x86"),
806         link_name = "fcntl$UNIX2003"
807     )]
808     pub fn fcntl(fd: ::c_int, cmd: ::c_int, ...) -> ::c_int;
809 
810     #[cfg_attr(
811         all(target_os = "macos", target_arch = "x86_64"),
812         link_name = "opendir$INODE64"
813     )]
814     #[cfg_attr(
815         all(target_os = "macos", target_arch = "x86"),
816         link_name = "opendir$INODE64$UNIX2003"
817     )]
818     #[cfg_attr(target_os = "netbsd", link_name = "__opendir30")]
819     pub fn opendir(dirname: *const c_char) -> *mut ::DIR;
820 
821     #[cfg_attr(
822         all(target_os = "macos", not(target_arch = "aarch64")),
823         link_name = "readdir$INODE64"
824     )]
825     #[cfg_attr(target_os = "netbsd", link_name = "__readdir30")]
826     #[cfg_attr(
827         all(target_os = "freebsd", any(freebsd11, freebsd10)),
828         link_name = "readdir@FBSD_1.0"
829     )]
830     pub fn readdir(dirp: *mut ::DIR) -> *mut ::dirent;
831     #[cfg_attr(
832         all(target_os = "macos", target_arch = "x86"),
833         link_name = "closedir$UNIX2003"
834     )]
835     pub fn closedir(dirp: *mut ::DIR) -> ::c_int;
836     #[cfg_attr(
837         all(target_os = "macos", target_arch = "x86_64"),
838         link_name = "rewinddir$INODE64"
839     )]
840     #[cfg_attr(
841         all(target_os = "macos", target_arch = "x86"),
842         link_name = "rewinddir$INODE64$UNIX2003"
843     )]
844     pub fn rewinddir(dirp: *mut ::DIR);
845 
846     pub fn fchmodat(
847         dirfd: ::c_int,
848         pathname: *const ::c_char,
849         mode: ::mode_t,
850         flags: ::c_int,
851     ) -> ::c_int;
852     pub fn fchown(fd: ::c_int, owner: ::uid_t, group: ::gid_t) -> ::c_int;
853     pub fn fchownat(
854         dirfd: ::c_int,
855         pathname: *const ::c_char,
856         owner: ::uid_t,
857         group: ::gid_t,
858         flags: ::c_int,
859     ) -> ::c_int;
860     #[cfg_attr(
861         all(target_os = "macos", not(target_arch = "aarch64")),
862         link_name = "fstatat$INODE64"
863     )]
864     #[cfg_attr(
865         all(target_os = "freebsd", any(freebsd11, freebsd10)),
866         link_name = "fstatat@FBSD_1.1"
867     )]
868     pub fn fstatat(
869         dirfd: ::c_int,
870         pathname: *const ::c_char,
871         buf: *mut stat,
872         flags: ::c_int,
873     ) -> ::c_int;
874     pub fn linkat(
875         olddirfd: ::c_int,
876         oldpath: *const ::c_char,
877         newdirfd: ::c_int,
878         newpath: *const ::c_char,
879         flags: ::c_int,
880     ) -> ::c_int;
881     pub fn renameat(
882         olddirfd: ::c_int,
883         oldpath: *const ::c_char,
884         newdirfd: ::c_int,
885         newpath: *const ::c_char,
886     ) -> ::c_int;
887     pub fn symlinkat(
888         target: *const ::c_char,
889         newdirfd: ::c_int,
890         linkpath: *const ::c_char,
891     ) -> ::c_int;
892     pub fn unlinkat(
893         dirfd: ::c_int,
894         pathname: *const ::c_char,
895         flags: ::c_int,
896     ) -> ::c_int;
897 
898     pub fn access(path: *const c_char, amode: ::c_int) -> ::c_int;
899     pub fn alarm(seconds: ::c_uint) -> ::c_uint;
900     pub fn chdir(dir: *const c_char) -> ::c_int;
901     pub fn fchdir(dirfd: ::c_int) -> ::c_int;
902     pub fn chown(path: *const c_char, uid: uid_t, gid: gid_t) -> ::c_int;
903     #[cfg_attr(
904         all(target_os = "macos", target_arch = "x86"),
905         link_name = "lchown$UNIX2003"
906     )]
907     pub fn lchown(path: *const c_char, uid: uid_t, gid: gid_t) -> ::c_int;
908     #[cfg_attr(
909         all(target_os = "macos", target_arch = "x86"),
910         link_name = "close$NOCANCEL$UNIX2003"
911     )]
912     #[cfg_attr(
913         all(target_os = "macos", target_arch = "x86_64"),
914         link_name = "close$NOCANCEL"
915     )]
916     pub fn close(fd: ::c_int) -> ::c_int;
917     pub fn dup(fd: ::c_int) -> ::c_int;
918     pub fn dup2(src: ::c_int, dst: ::c_int) -> ::c_int;
919     pub fn execl(path: *const c_char, arg0: *const c_char, ...) -> ::c_int;
920     pub fn execle(
921         path: *const ::c_char,
922         arg0: *const ::c_char,
923         ...
924     ) -> ::c_int;
925     pub fn execlp(
926         file: *const ::c_char,
927         arg0: *const ::c_char,
928         ...
929     ) -> ::c_int;
930     pub fn execv(prog: *const c_char, argv: *const *const c_char) -> ::c_int;
931     pub fn execve(
932         prog: *const c_char,
933         argv: *const *const c_char,
934         envp: *const *const c_char,
935     ) -> ::c_int;
936     pub fn execvp(c: *const c_char, argv: *const *const c_char) -> ::c_int;
937     pub fn fork() -> pid_t;
938     pub fn fpathconf(filedes: ::c_int, name: ::c_int) -> c_long;
939     pub fn getcwd(buf: *mut c_char, size: ::size_t) -> *mut c_char;
940     pub fn getegid() -> gid_t;
941     pub fn geteuid() -> uid_t;
942     pub fn getgid() -> gid_t;
943     pub fn getgroups(ngroups_max: ::c_int, groups: *mut gid_t) -> ::c_int;
944     #[cfg_attr(target_os = "illumos", link_name = "getloginx")]
945     pub fn getlogin() -> *mut c_char;
946     #[cfg_attr(
947         all(target_os = "macos", target_arch = "x86"),
948         link_name = "getopt$UNIX2003"
949     )]
950     pub fn getopt(
951         argc: ::c_int,
952         argv: *const *mut c_char,
953         optstr: *const c_char,
954     ) -> ::c_int;
955     pub fn getpgid(pid: pid_t) -> pid_t;
956     pub fn getpgrp() -> pid_t;
957     pub fn getpid() -> pid_t;
958     pub fn getppid() -> pid_t;
959     pub fn getuid() -> uid_t;
960     pub fn isatty(fd: ::c_int) -> ::c_int;
961     pub fn link(src: *const c_char, dst: *const c_char) -> ::c_int;
962     pub fn lseek(fd: ::c_int, offset: off_t, whence: ::c_int) -> off_t;
963     pub fn pathconf(path: *const c_char, name: ::c_int) -> c_long;
964     pub fn pipe(fds: *mut ::c_int) -> ::c_int;
965     pub fn posix_memalign(
966         memptr: *mut *mut ::c_void,
967         align: ::size_t,
968         size: ::size_t,
969     ) -> ::c_int;
970     #[cfg_attr(
971         all(target_os = "macos", target_arch = "x86"),
972         link_name = "read$UNIX2003"
973     )]
974     pub fn read(fd: ::c_int, buf: *mut ::c_void, count: ::size_t)
975         -> ::ssize_t;
976     pub fn rmdir(path: *const c_char) -> ::c_int;
977     pub fn seteuid(uid: uid_t) -> ::c_int;
978     pub fn setegid(gid: gid_t) -> ::c_int;
979     pub fn setgid(gid: gid_t) -> ::c_int;
980     pub fn setpgid(pid: pid_t, pgid: pid_t) -> ::c_int;
981     pub fn setsid() -> pid_t;
982     pub fn setuid(uid: uid_t) -> ::c_int;
983     #[cfg_attr(
984         all(target_os = "macos", target_arch = "x86"),
985         link_name = "sleep$UNIX2003"
986     )]
987     pub fn sleep(secs: ::c_uint) -> ::c_uint;
988     #[cfg_attr(
989         all(target_os = "macos", target_arch = "x86"),
990         link_name = "nanosleep$UNIX2003"
991     )]
992     #[cfg_attr(target_os = "netbsd", link_name = "__nanosleep50")]
993     pub fn nanosleep(rqtp: *const timespec, rmtp: *mut timespec) -> ::c_int;
994     pub fn tcgetpgrp(fd: ::c_int) -> pid_t;
995     pub fn tcsetpgrp(fd: ::c_int, pgrp: ::pid_t) -> ::c_int;
996     pub fn ttyname(fd: ::c_int) -> *mut c_char;
997     #[cfg_attr(
998         all(target_os = "macos", target_arch = "x86"),
999         link_name = "ttyname_r$UNIX2003"
1000     )]
1001     #[cfg_attr(target_os = "illumos", link_name = "__posix_ttyname_r")]
1002     pub fn ttyname_r(
1003         fd: ::c_int,
1004         buf: *mut c_char,
1005         buflen: ::size_t,
1006     ) -> ::c_int;
1007     pub fn unlink(c: *const c_char) -> ::c_int;
1008     #[cfg_attr(
1009         all(target_os = "macos", target_arch = "x86"),
1010         link_name = "wait$UNIX2003"
1011     )]
1012     pub fn wait(status: *mut ::c_int) -> pid_t;
1013     #[cfg_attr(
1014         all(target_os = "macos", target_arch = "x86"),
1015         link_name = "waitpid$UNIX2003"
1016     )]
1017     pub fn waitpid(
1018         pid: pid_t,
1019         status: *mut ::c_int,
1020         options: ::c_int,
1021     ) -> pid_t;
1022     #[cfg_attr(
1023         all(target_os = "macos", target_arch = "x86"),
1024         link_name = "write$UNIX2003"
1025     )]
1026     pub fn write(
1027         fd: ::c_int,
1028         buf: *const ::c_void,
1029         count: ::size_t,
1030     ) -> ::ssize_t;
1031     #[cfg_attr(
1032         all(target_os = "macos", target_arch = "x86"),
1033         link_name = "pread$UNIX2003"
1034     )]
1035     pub fn pread(
1036         fd: ::c_int,
1037         buf: *mut ::c_void,
1038         count: ::size_t,
1039         offset: off_t,
1040     ) -> ::ssize_t;
1041     #[cfg_attr(
1042         all(target_os = "macos", target_arch = "x86"),
1043         link_name = "pwrite$UNIX2003"
1044     )]
1045     pub fn pwrite(
1046         fd: ::c_int,
1047         buf: *const ::c_void,
1048         count: ::size_t,
1049         offset: off_t,
1050     ) -> ::ssize_t;
1051     pub fn umask(mask: mode_t) -> mode_t;
1052 
1053     #[cfg_attr(target_os = "netbsd", link_name = "__utime50")]
1054     pub fn utime(file: *const c_char, buf: *const utimbuf) -> ::c_int;
1055 
1056     #[cfg_attr(
1057         all(target_os = "macos", target_arch = "x86"),
1058         link_name = "kill$UNIX2003"
1059     )]
1060     pub fn kill(pid: pid_t, sig: ::c_int) -> ::c_int;
1061     #[cfg_attr(
1062         all(target_os = "macos", target_arch = "x86"),
1063         link_name = "killpg$UNIX2003"
1064     )]
1065     pub fn killpg(pgrp: pid_t, sig: ::c_int) -> ::c_int;
1066 
1067     pub fn mlock(addr: *const ::c_void, len: ::size_t) -> ::c_int;
1068     pub fn munlock(addr: *const ::c_void, len: ::size_t) -> ::c_int;
1069     pub fn mlockall(flags: ::c_int) -> ::c_int;
1070     pub fn munlockall() -> ::c_int;
1071 
1072     #[cfg_attr(
1073         all(target_os = "macos", target_arch = "x86"),
1074         link_name = "mmap$UNIX2003"
1075     )]
1076     pub fn mmap(
1077         addr: *mut ::c_void,
1078         len: ::size_t,
1079         prot: ::c_int,
1080         flags: ::c_int,
1081         fd: ::c_int,
1082         offset: off_t,
1083     ) -> *mut ::c_void;
1084     #[cfg_attr(
1085         all(target_os = "macos", target_arch = "x86"),
1086         link_name = "munmap$UNIX2003"
1087     )]
1088     pub fn munmap(addr: *mut ::c_void, len: ::size_t) -> ::c_int;
1089 
1090     pub fn if_nametoindex(ifname: *const c_char) -> ::c_uint;
1091     pub fn if_indextoname(
1092         ifindex: ::c_uint,
1093         ifname: *mut ::c_char,
1094     ) -> *mut ::c_char;
1095 
1096     #[cfg_attr(
1097         all(target_os = "macos", not(target_arch = "aarch64")),
1098         link_name = "lstat$INODE64"
1099     )]
1100     #[cfg_attr(target_os = "netbsd", link_name = "__lstat50")]
1101     #[cfg_attr(
1102         all(target_os = "freebsd", any(freebsd11, freebsd10)),
1103         link_name = "lstat@FBSD_1.0"
1104     )]
1105     pub fn lstat(path: *const c_char, buf: *mut stat) -> ::c_int;
1106 
1107     #[cfg_attr(
1108         all(target_os = "macos", target_arch = "x86"),
1109         link_name = "fsync$UNIX2003"
1110     )]
1111     pub fn fsync(fd: ::c_int) -> ::c_int;
1112 
1113     #[cfg_attr(
1114         all(target_os = "macos", target_arch = "x86"),
1115         link_name = "setenv$UNIX2003"
1116     )]
1117     pub fn setenv(
1118         name: *const c_char,
1119         val: *const c_char,
1120         overwrite: ::c_int,
1121     ) -> ::c_int;
1122     #[cfg_attr(
1123         all(target_os = "macos", target_arch = "x86"),
1124         link_name = "unsetenv$UNIX2003"
1125     )]
1126     #[cfg_attr(target_os = "netbsd", link_name = "__unsetenv13")]
1127     pub fn unsetenv(name: *const c_char) -> ::c_int;
1128 
1129     pub fn symlink(path1: *const c_char, path2: *const c_char) -> ::c_int;
1130 
1131     pub fn ftruncate(fd: ::c_int, length: off_t) -> ::c_int;
1132 
1133     pub fn signal(signum: ::c_int, handler: sighandler_t) -> sighandler_t;
1134 
1135     #[cfg_attr(target_os = "netbsd", link_name = "__getrusage50")]
1136     pub fn getrusage(resource: ::c_int, usage: *mut rusage) -> ::c_int;
1137 
1138     #[cfg_attr(
1139         any(target_os = "macos", target_os = "ios"),
1140         link_name = "realpath$DARWIN_EXTSN"
1141     )]
1142     pub fn realpath(
1143         pathname: *const ::c_char,
1144         resolved: *mut ::c_char,
1145     ) -> *mut ::c_char;
1146 
1147     pub fn flock(fd: ::c_int, operation: ::c_int) -> ::c_int;
1148 
1149     #[cfg_attr(target_os = "netbsd", link_name = "__times13")]
1150     pub fn times(buf: *mut ::tms) -> ::clock_t;
1151 
1152     pub fn pthread_self() -> ::pthread_t;
1153     #[cfg_attr(
1154         all(target_os = "macos", target_arch = "x86"),
1155         link_name = "pthread_join$UNIX2003"
1156     )]
1157     pub fn pthread_join(
1158         native: ::pthread_t,
1159         value: *mut *mut ::c_void,
1160     ) -> ::c_int;
1161     pub fn pthread_exit(value: *mut ::c_void) -> !;
1162     pub fn pthread_attr_init(attr: *mut ::pthread_attr_t) -> ::c_int;
1163     pub fn pthread_attr_destroy(attr: *mut ::pthread_attr_t) -> ::c_int;
1164     pub fn pthread_attr_setstacksize(
1165         attr: *mut ::pthread_attr_t,
1166         stack_size: ::size_t,
1167     ) -> ::c_int;
1168     pub fn pthread_attr_setdetachstate(
1169         attr: *mut ::pthread_attr_t,
1170         state: ::c_int,
1171     ) -> ::c_int;
1172     pub fn pthread_detach(thread: ::pthread_t) -> ::c_int;
1173     #[cfg_attr(target_os = "netbsd", link_name = "__libc_thr_yield")]
1174     pub fn sched_yield() -> ::c_int;
1175     pub fn pthread_key_create(
1176         key: *mut pthread_key_t,
1177         dtor: ::Option<unsafe extern "C" fn(*mut ::c_void)>,
1178     ) -> ::c_int;
1179     pub fn pthread_key_delete(key: pthread_key_t) -> ::c_int;
1180     pub fn pthread_getspecific(key: pthread_key_t) -> *mut ::c_void;
1181     pub fn pthread_setspecific(
1182         key: pthread_key_t,
1183         value: *const ::c_void,
1184     ) -> ::c_int;
1185     pub fn pthread_mutex_init(
1186         lock: *mut pthread_mutex_t,
1187         attr: *const pthread_mutexattr_t,
1188     ) -> ::c_int;
1189     pub fn pthread_mutex_destroy(lock: *mut pthread_mutex_t) -> ::c_int;
1190     pub fn pthread_mutex_lock(lock: *mut pthread_mutex_t) -> ::c_int;
1191     pub fn pthread_mutex_trylock(lock: *mut pthread_mutex_t) -> ::c_int;
1192     pub fn pthread_mutex_unlock(lock: *mut pthread_mutex_t) -> ::c_int;
1193 
1194     pub fn pthread_mutexattr_init(attr: *mut pthread_mutexattr_t) -> ::c_int;
1195     #[cfg_attr(
1196         all(target_os = "macos", target_arch = "x86"),
1197         link_name = "pthread_mutexattr_destroy$UNIX2003"
1198     )]
1199     pub fn pthread_mutexattr_destroy(
1200         attr: *mut pthread_mutexattr_t,
1201     ) -> ::c_int;
1202     pub fn pthread_mutexattr_settype(
1203         attr: *mut pthread_mutexattr_t,
1204         _type: ::c_int,
1205     ) -> ::c_int;
1206 
1207     #[cfg_attr(
1208         all(target_os = "macos", target_arch = "x86"),
1209         link_name = "pthread_cond_init$UNIX2003"
1210     )]
1211     pub fn pthread_cond_init(
1212         cond: *mut pthread_cond_t,
1213         attr: *const pthread_condattr_t,
1214     ) -> ::c_int;
1215     #[cfg_attr(
1216         all(target_os = "macos", target_arch = "x86"),
1217         link_name = "pthread_cond_wait$UNIX2003"
1218     )]
1219     pub fn pthread_cond_wait(
1220         cond: *mut pthread_cond_t,
1221         lock: *mut pthread_mutex_t,
1222     ) -> ::c_int;
1223     #[cfg_attr(
1224         all(target_os = "macos", target_arch = "x86"),
1225         link_name = "pthread_cond_timedwait$UNIX2003"
1226     )]
1227     pub fn pthread_cond_timedwait(
1228         cond: *mut pthread_cond_t,
1229         lock: *mut pthread_mutex_t,
1230         abstime: *const ::timespec,
1231     ) -> ::c_int;
1232     pub fn pthread_cond_signal(cond: *mut pthread_cond_t) -> ::c_int;
1233     pub fn pthread_cond_broadcast(cond: *mut pthread_cond_t) -> ::c_int;
1234     pub fn pthread_cond_destroy(cond: *mut pthread_cond_t) -> ::c_int;
1235     pub fn pthread_condattr_init(attr: *mut pthread_condattr_t) -> ::c_int;
1236     pub fn pthread_condattr_destroy(attr: *mut pthread_condattr_t) -> ::c_int;
1237     #[cfg_attr(
1238         all(target_os = "macos", target_arch = "x86"),
1239         link_name = "pthread_rwlock_init$UNIX2003"
1240     )]
1241     pub fn pthread_rwlock_init(
1242         lock: *mut pthread_rwlock_t,
1243         attr: *const pthread_rwlockattr_t,
1244     ) -> ::c_int;
1245     #[cfg_attr(
1246         all(target_os = "macos", target_arch = "x86"),
1247         link_name = "pthread_rwlock_destroy$UNIX2003"
1248     )]
1249     pub fn pthread_rwlock_destroy(lock: *mut pthread_rwlock_t) -> ::c_int;
1250     #[cfg_attr(
1251         all(target_os = "macos", target_arch = "x86"),
1252         link_name = "pthread_rwlock_rdlock$UNIX2003"
1253     )]
1254     pub fn pthread_rwlock_rdlock(lock: *mut pthread_rwlock_t) -> ::c_int;
1255     #[cfg_attr(
1256         all(target_os = "macos", target_arch = "x86"),
1257         link_name = "pthread_rwlock_tryrdlock$UNIX2003"
1258     )]
1259     pub fn pthread_rwlock_tryrdlock(lock: *mut pthread_rwlock_t) -> ::c_int;
1260     #[cfg_attr(
1261         all(target_os = "macos", target_arch = "x86"),
1262         link_name = "pthread_rwlock_wrlock$UNIX2003"
1263     )]
1264     pub fn pthread_rwlock_wrlock(lock: *mut pthread_rwlock_t) -> ::c_int;
1265     #[cfg_attr(
1266         all(target_os = "macos", target_arch = "x86"),
1267         link_name = "pthread_rwlock_trywrlock$UNIX2003"
1268     )]
1269     pub fn pthread_rwlock_trywrlock(lock: *mut pthread_rwlock_t) -> ::c_int;
1270     #[cfg_attr(
1271         all(target_os = "macos", target_arch = "x86"),
1272         link_name = "pthread_rwlock_unlock$UNIX2003"
1273     )]
1274     pub fn pthread_rwlock_unlock(lock: *mut pthread_rwlock_t) -> ::c_int;
1275     pub fn pthread_rwlockattr_init(attr: *mut pthread_rwlockattr_t)
1276         -> ::c_int;
1277     pub fn pthread_rwlockattr_destroy(
1278         attr: *mut pthread_rwlockattr_t,
1279     ) -> ::c_int;
1280 
1281     #[cfg_attr(target_os = "illumos", link_name = "__xnet_getsockopt")]
1282     pub fn getsockopt(
1283         sockfd: ::c_int,
1284         level: ::c_int,
1285         optname: ::c_int,
1286         optval: *mut ::c_void,
1287         optlen: *mut ::socklen_t,
1288     ) -> ::c_int;
1289     pub fn raise(signum: ::c_int) -> ::c_int;
1290     #[cfg_attr(target_os = "netbsd", link_name = "__sigaction14")]
1291     pub fn sigaction(
1292         signum: ::c_int,
1293         act: *const sigaction,
1294         oldact: *mut sigaction,
1295     ) -> ::c_int;
1296 
1297     #[cfg_attr(target_os = "netbsd", link_name = "__utimes50")]
1298     pub fn utimes(
1299         filename: *const ::c_char,
1300         times: *const ::timeval,
1301     ) -> ::c_int;
1302     pub fn dlopen(filename: *const ::c_char, flag: ::c_int) -> *mut ::c_void;
1303     pub fn dlerror() -> *mut ::c_char;
1304     pub fn dlsym(
1305         handle: *mut ::c_void,
1306         symbol: *const ::c_char,
1307     ) -> *mut ::c_void;
1308     pub fn dlclose(handle: *mut ::c_void) -> ::c_int;
1309     pub fn dladdr(addr: *const ::c_void, info: *mut Dl_info) -> ::c_int;
1310 
1311     #[cfg(not(all(
1312         libc_cfg_target_vendor,
1313         target_arch = "powerpc",
1314         target_vendor = "nintendo"
1315     )))]
1316     #[cfg_attr(target_os = "illumos", link_name = "__xnet_getaddrinfo")]
1317     pub fn getaddrinfo(
1318         node: *const c_char,
1319         service: *const c_char,
1320         hints: *const addrinfo,
1321         res: *mut *mut addrinfo,
1322     ) -> ::c_int;
1323     #[cfg(not(all(
1324         libc_cfg_target_vendor,
1325         target_arch = "powerpc",
1326         target_vendor = "nintendo"
1327     )))]
1328     pub fn freeaddrinfo(res: *mut addrinfo);
1329     pub fn gai_strerror(errcode: ::c_int) -> *const ::c_char;
1330     #[cfg_attr(
1331         any(
1332             all(target_os = "linux", not(target_env = "musl")),
1333             target_os = "freebsd",
1334             target_os = "dragonfly",
1335             target_os = "haiku"
1336         ),
1337         link_name = "__res_init"
1338     )]
1339     #[cfg_attr(
1340         any(target_os = "macos", target_os = "ios"),
1341         link_name = "res_9_init"
1342     )]
1343     pub fn res_init() -> ::c_int;
1344 
1345     #[cfg_attr(target_os = "netbsd", link_name = "__gmtime_r50")]
1346     #[cfg_attr(target_env = "musl", allow(deprecated))]
1347     // FIXME: for `time_t`
1348     pub fn gmtime_r(time_p: *const time_t, result: *mut tm) -> *mut tm;
1349     #[cfg_attr(target_os = "netbsd", link_name = "__localtime_r50")]
1350     #[cfg_attr(target_env = "musl", allow(deprecated))]
1351     // FIXME: for `time_t`
1352     pub fn localtime_r(time_p: *const time_t, result: *mut tm) -> *mut tm;
1353     #[cfg_attr(
1354         all(target_os = "macos", target_arch = "x86"),
1355         link_name = "mktime$UNIX2003"
1356     )]
1357     #[cfg_attr(target_os = "netbsd", link_name = "__mktime50")]
1358     #[cfg_attr(target_env = "musl", allow(deprecated))]
1359     // FIXME: for `time_t`
1360     pub fn mktime(tm: *mut tm) -> time_t;
1361     #[cfg_attr(target_os = "netbsd", link_name = "__time50")]
1362     #[cfg_attr(target_env = "musl", allow(deprecated))]
1363     // FIXME: for `time_t`
1364     pub fn time(time: *mut time_t) -> time_t;
1365     #[cfg_attr(target_os = "netbsd", link_name = "__gmtime50")]
1366     #[cfg_attr(target_env = "musl", allow(deprecated))]
1367     // FIXME: for `time_t`
1368     pub fn gmtime(time_p: *const time_t) -> *mut tm;
1369     #[cfg_attr(target_os = "netbsd", link_name = "__locatime50")]
1370     #[cfg_attr(target_env = "musl", allow(deprecated))]
1371     // FIXME: for `time_t`
1372     pub fn localtime(time_p: *const time_t) -> *mut tm;
1373     #[cfg_attr(target_os = "netbsd", link_name = "__difftime50")]
1374     #[cfg_attr(target_env = "musl", allow(deprecated))]
1375     // FIXME: for `time_t`
1376     pub fn difftime(time1: time_t, time0: time_t) -> ::c_double;
1377     #[cfg_attr(target_os = "netbsd", link_name = "__timegm50")]
1378     #[cfg_attr(target_env = "musl", allow(deprecated))]
1379     // FIXME: for `time_t`
1380     pub fn timegm(tm: *mut ::tm) -> time_t;
1381 
1382     #[cfg_attr(target_os = "netbsd", link_name = "__mknod50")]
1383     #[cfg_attr(
1384         all(target_os = "freebsd", any(freebsd11, freebsd10)),
1385         link_name = "mknod@FBSD_1.0"
1386     )]
1387     pub fn mknod(
1388         pathname: *const ::c_char,
1389         mode: ::mode_t,
1390         dev: ::dev_t,
1391     ) -> ::c_int;
1392     pub fn gethostname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
1393     pub fn endservent();
1394     pub fn getservbyname(
1395         name: *const ::c_char,
1396         proto: *const ::c_char,
1397     ) -> *mut servent;
1398     pub fn getservbyport(
1399         port: ::c_int,
1400         proto: *const ::c_char,
1401     ) -> *mut servent;
1402     pub fn getservent() -> *mut servent;
1403     pub fn setservent(stayopen: ::c_int);
1404     pub fn getprotobyname(name: *const ::c_char) -> *mut protoent;
1405     pub fn getprotobynumber(proto: ::c_int) -> *mut protoent;
1406     pub fn chroot(name: *const ::c_char) -> ::c_int;
1407     #[cfg_attr(
1408         all(target_os = "macos", target_arch = "x86"),
1409         link_name = "usleep$UNIX2003"
1410     )]
1411     pub fn usleep(secs: ::c_uint) -> ::c_int;
1412     #[cfg_attr(
1413         all(target_os = "macos", target_arch = "x86"),
1414         link_name = "send$UNIX2003"
1415     )]
1416     pub fn send(
1417         socket: ::c_int,
1418         buf: *const ::c_void,
1419         len: ::size_t,
1420         flags: ::c_int,
1421     ) -> ::ssize_t;
1422     #[cfg_attr(
1423         all(target_os = "macos", target_arch = "x86"),
1424         link_name = "recv$UNIX2003"
1425     )]
1426     pub fn recv(
1427         socket: ::c_int,
1428         buf: *mut ::c_void,
1429         len: ::size_t,
1430         flags: ::c_int,
1431     ) -> ::ssize_t;
1432     #[cfg_attr(
1433         all(target_os = "macos", target_arch = "x86"),
1434         link_name = "putenv$UNIX2003"
1435     )]
1436     #[cfg_attr(target_os = "netbsd", link_name = "__putenv50")]
1437     pub fn putenv(string: *mut c_char) -> ::c_int;
1438     #[cfg_attr(
1439         all(target_os = "macos", target_arch = "x86"),
1440         link_name = "poll$UNIX2003"
1441     )]
1442     pub fn poll(fds: *mut pollfd, nfds: nfds_t, timeout: ::c_int) -> ::c_int;
1443     #[cfg_attr(
1444         all(target_os = "macos", target_arch = "x86_64"),
1445         link_name = "select$1050"
1446     )]
1447     #[cfg_attr(
1448         all(target_os = "macos", target_arch = "x86"),
1449         link_name = "select$UNIX2003"
1450     )]
1451     #[cfg_attr(target_os = "netbsd", link_name = "__select50")]
1452     pub fn select(
1453         nfds: ::c_int,
1454         readfs: *mut fd_set,
1455         writefds: *mut fd_set,
1456         errorfds: *mut fd_set,
1457         timeout: *mut timeval,
1458     ) -> ::c_int;
1459     #[cfg_attr(target_os = "netbsd", link_name = "__setlocale50")]
1460     pub fn setlocale(
1461         category: ::c_int,
1462         locale: *const ::c_char,
1463     ) -> *mut ::c_char;
1464     pub fn localeconv() -> *mut lconv;
1465 
1466     #[cfg_attr(
1467         all(target_os = "macos", target_arch = "x86"),
1468         link_name = "sem_wait$UNIX2003"
1469     )]
1470     pub fn sem_wait(sem: *mut sem_t) -> ::c_int;
1471     pub fn sem_trywait(sem: *mut sem_t) -> ::c_int;
1472     pub fn sem_post(sem: *mut sem_t) -> ::c_int;
1473     pub fn statvfs(path: *const c_char, buf: *mut statvfs) -> ::c_int;
1474     pub fn fstatvfs(fd: ::c_int, buf: *mut statvfs) -> ::c_int;
1475 
1476     pub fn readlink(
1477         path: *const c_char,
1478         buf: *mut c_char,
1479         bufsz: ::size_t,
1480     ) -> ::ssize_t;
1481 
1482     #[cfg_attr(target_os = "netbsd", link_name = "__sigemptyset14")]
1483     pub fn sigemptyset(set: *mut sigset_t) -> ::c_int;
1484     #[cfg_attr(target_os = "netbsd", link_name = "__sigaddset14")]
1485     pub fn sigaddset(set: *mut sigset_t, signum: ::c_int) -> ::c_int;
1486     #[cfg_attr(target_os = "netbsd", link_name = "__sigfillset14")]
1487     pub fn sigfillset(set: *mut sigset_t) -> ::c_int;
1488     #[cfg_attr(target_os = "netbsd", link_name = "__sigdelset14")]
1489     pub fn sigdelset(set: *mut sigset_t, signum: ::c_int) -> ::c_int;
1490     #[cfg_attr(target_os = "netbsd", link_name = "__sigismember14")]
1491     pub fn sigismember(set: *const sigset_t, signum: ::c_int) -> ::c_int;
1492 
1493     #[cfg_attr(target_os = "netbsd", link_name = "__sigprocmask14")]
1494     pub fn sigprocmask(
1495         how: ::c_int,
1496         set: *const sigset_t,
1497         oldset: *mut sigset_t,
1498     ) -> ::c_int;
1499     #[cfg_attr(target_os = "netbsd", link_name = "__sigpending14")]
1500     pub fn sigpending(set: *mut sigset_t) -> ::c_int;
1501 
1502     pub fn sysconf(name: ::c_int) -> ::c_long;
1503 
1504     pub fn mkfifo(path: *const c_char, mode: mode_t) -> ::c_int;
1505 
1506     #[cfg_attr(
1507         all(target_os = "macos", target_arch = "x86_64"),
1508         link_name = "pselect$1050"
1509     )]
1510     #[cfg_attr(
1511         all(target_os = "macos", target_arch = "x86"),
1512         link_name = "pselect$UNIX2003"
1513     )]
1514     #[cfg_attr(target_os = "netbsd", link_name = "__pselect50")]
1515     pub fn pselect(
1516         nfds: ::c_int,
1517         readfs: *mut fd_set,
1518         writefds: *mut fd_set,
1519         errorfds: *mut fd_set,
1520         timeout: *const timespec,
1521         sigmask: *const sigset_t,
1522     ) -> ::c_int;
1523     pub fn fseeko(
1524         stream: *mut ::FILE,
1525         offset: ::off_t,
1526         whence: ::c_int,
1527     ) -> ::c_int;
1528     pub fn ftello(stream: *mut ::FILE) -> ::off_t;
1529     #[cfg_attr(
1530         all(target_os = "macos", target_arch = "x86"),
1531         link_name = "tcdrain$UNIX2003"
1532     )]
1533     pub fn tcdrain(fd: ::c_int) -> ::c_int;
1534     pub fn cfgetispeed(termios: *const ::termios) -> ::speed_t;
1535     pub fn cfgetospeed(termios: *const ::termios) -> ::speed_t;
1536     pub fn cfsetispeed(termios: *mut ::termios, speed: ::speed_t) -> ::c_int;
1537     pub fn cfsetospeed(termios: *mut ::termios, speed: ::speed_t) -> ::c_int;
1538     pub fn tcgetattr(fd: ::c_int, termios: *mut ::termios) -> ::c_int;
1539     pub fn tcsetattr(
1540         fd: ::c_int,
1541         optional_actions: ::c_int,
1542         termios: *const ::termios,
1543     ) -> ::c_int;
1544     pub fn tcflow(fd: ::c_int, action: ::c_int) -> ::c_int;
1545     pub fn tcflush(fd: ::c_int, action: ::c_int) -> ::c_int;
1546     pub fn tcgetsid(fd: ::c_int) -> ::pid_t;
1547     pub fn tcsendbreak(fd: ::c_int, duration: ::c_int) -> ::c_int;
1548     pub fn mkstemp(template: *mut ::c_char) -> ::c_int;
1549     pub fn mkdtemp(template: *mut ::c_char) -> *mut ::c_char;
1550 
1551     pub fn tmpnam(ptr: *mut ::c_char) -> *mut ::c_char;
1552 
1553     pub fn openlog(ident: *const ::c_char, logopt: ::c_int, facility: ::c_int);
1554     pub fn closelog();
1555     pub fn setlogmask(maskpri: ::c_int) -> ::c_int;
1556     #[cfg_attr(target_os = "macos", link_name = "syslog$DARWIN_EXTSN")]
1557     pub fn syslog(priority: ::c_int, message: *const ::c_char, ...);
1558     #[cfg_attr(
1559         all(target_os = "macos", target_arch = "x86"),
1560         link_name = "nice$UNIX2003"
1561     )]
1562     pub fn nice(incr: ::c_int) -> ::c_int;
1563 
1564     pub fn grantpt(fd: ::c_int) -> ::c_int;
1565     pub fn posix_openpt(flags: ::c_int) -> ::c_int;
1566     pub fn ptsname(fd: ::c_int) -> *mut ::c_char;
1567     pub fn unlockpt(fd: ::c_int) -> ::c_int;
1568 
1569     pub fn strcasestr(cs: *const c_char, ct: *const c_char) -> *mut c_char;
1570     pub fn getline(
1571         lineptr: *mut *mut c_char,
1572         n: *mut size_t,
1573         stream: *mut FILE,
1574     ) -> ssize_t;
1575 
1576     pub fn lockf(fd: ::c_int, cmd: ::c_int, len: ::off_t) -> ::c_int;
1577 }
1578 
1579 cfg_if! {
1580     if #[cfg(not(target_env = "uclibc"))] {
1581         extern "C" {
1582             pub fn open_wmemstream(
1583                 ptr: *mut *mut wchar_t,
1584                 sizeloc: *mut size_t,
1585             ) -> *mut FILE;
1586         }
1587     }
1588 }
1589 
1590 cfg_if! {
1591     if #[cfg(not(target_os = "redox"))] {
1592         extern {
1593             pub fn getsid(pid: pid_t) -> pid_t;
1594             pub fn truncate(path: *const c_char, length: off_t) -> ::c_int;
1595             #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
1596                        link_name = "pause$UNIX2003")]
1597             pub fn pause() -> ::c_int;
1598 
1599             pub fn readlinkat(dirfd: ::c_int,
1600                               pathname: *const ::c_char,
1601                               buf: *mut ::c_char,
1602                               bufsiz: ::size_t) -> ::ssize_t;
1603             pub fn mkdirat(dirfd: ::c_int, pathname: *const ::c_char,
1604                            mode: ::mode_t) -> ::c_int;
1605             pub fn openat(dirfd: ::c_int, pathname: *const ::c_char,
1606                           flags: ::c_int, ...) -> ::c_int;
1607 
1608             #[cfg_attr(all(target_os = "macos", target_arch = "x86_64"),
1609                        link_name = "fdopendir$INODE64")]
1610             #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
1611                        link_name = "fdopendir$INODE64$UNIX2003")]
1612             pub fn fdopendir(fd: ::c_int) -> *mut ::DIR;
1613 
1614             #[cfg_attr(all(target_os = "macos", not(target_arch = "aarch64")),
1615                        link_name = "readdir_r$INODE64")]
1616             #[cfg_attr(target_os = "netbsd", link_name = "__readdir_r30")]
1617             #[cfg_attr(
1618                 all(target_os = "freebsd", any(freebsd11, freebsd10)),
1619                 link_name = "readdir_r@FBSD_1.0"
1620             )]
1621             #[allow(non_autolinks)] // FIXME: `<>` breaks line length limit.
1622             /// The 64-bit libc on Solaris and illumos only has readdir_r. If a
1623             /// 32-bit Solaris or illumos target is ever created, it should use
1624             /// __posix_readdir_r. See libc(3LIB) on Solaris or illumos:
1625             /// https://illumos.org/man/3lib/libc
1626             /// https://docs.oracle.com/cd/E36784_01/html/E36873/libc-3lib.html
1627             /// https://www.unix.com/man-page/opensolaris/3LIB/libc/
1628             pub fn readdir_r(dirp: *mut ::DIR, entry: *mut ::dirent,
1629                              result: *mut *mut ::dirent) -> ::c_int;
1630         }
1631     }
1632 }
1633 
1634 cfg_if! {
1635    if #[cfg(not(any(target_os = "solaris", target_os = "illumos")))] {
1636         extern {
1637             pub fn cfmakeraw(termios: *mut ::termios);
1638             pub fn cfsetspeed(termios: *mut ::termios,
1639                               speed: ::speed_t) -> ::c_int;
1640         }
1641    }
1642 }
1643 
1644 cfg_if! {
1645     if #[cfg(target_env = "newlib")] {
1646         mod newlib;
1647         pub use self::newlib::*;
1648     } else if #[cfg(any(target_os = "linux",
1649                         target_os = "android",
1650                         target_os = "emscripten"))] {
1651         mod linux_like;
1652         pub use self::linux_like::*;
1653     } else if #[cfg(any(target_os = "macos",
1654                         target_os = "ios",
1655                         target_os = "freebsd",
1656                         target_os = "dragonfly",
1657                         target_os = "openbsd",
1658                         target_os = "netbsd"))] {
1659         mod bsd;
1660         pub use self::bsd::*;
1661     } else if #[cfg(any(target_os = "solaris",
1662                         target_os = "illumos"))] {
1663         mod solarish;
1664         pub use self::solarish::*;
1665     } else if #[cfg(target_os = "haiku")] {
1666         mod haiku;
1667         pub use self::haiku::*;
1668     } else if #[cfg(target_os = "hermit")] {
1669         mod hermit;
1670         pub use self::hermit::*;
1671     } else if #[cfg(target_os = "redox")] {
1672         mod redox;
1673         pub use self::redox::*;
1674     } else {
1675         // Unknown target_os
1676     }
1677 }
1678 
1679 cfg_if! {
1680     if #[cfg(libc_core_cvoid)] {
1681         pub use ::ffi::c_void;
1682     } else {
1683         // Use repr(u8) as LLVM expects `void*` to be the same as `i8*` to help
1684         // enable more optimization opportunities around it recognizing things
1685         // like malloc/free.
1686         #[repr(u8)]
1687         #[allow(missing_copy_implementations)]
1688         #[allow(missing_debug_implementations)]
1689         pub enum c_void {
1690             // Two dummy variants so the #[repr] attribute can be used.
1691             #[doc(hidden)]
1692             __variant1,
1693             #[doc(hidden)]
1694             __variant2,
1695         }
1696     }
1697 }
1698 
1699 cfg_if! {
1700     if #[cfg(libc_align)] {
1701         mod align;
1702         pub use self::align::*;
1703     } else {
1704         mod no_align;
1705         pub use self::no_align::*;
1706     }
1707 }
1708