1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
use dox::{mem, Option};

pub type c_char = i8;
pub type wchar_t = i32;
pub type off_t = i64;
pub type useconds_t = u32;
pub type blkcnt_t = i64;
pub type socklen_t = u32;
pub type sa_family_t = u8;
pub type pthread_t = ::uintptr_t;
pub type nfds_t = ::c_uint;

s! {
    pub struct sockaddr {
        pub sa_len: u8,
        pub sa_family: sa_family_t,
        pub sa_data: [::c_char; 14],
    }

    pub struct sockaddr_in6 {
        pub sin6_len: u8,
        pub sin6_family: sa_family_t,
        pub sin6_port: ::in_port_t,
        pub sin6_flowinfo: u32,
        pub sin6_addr: ::in6_addr,
        pub sin6_scope_id: u32,
    }

    pub struct sockaddr_un {
        pub sun_len: u8,
        pub sun_family: sa_family_t,
        pub sun_path: [c_char; 104]
    }

    pub struct passwd {
        pub pw_name: *mut ::c_char,
        pub pw_passwd: *mut ::c_char,
        pub pw_uid: ::uid_t,
        pub pw_gid: ::gid_t,
        pub pw_change: ::time_t,
        pub pw_class: *mut ::c_char,
        pub pw_gecos: *mut ::c_char,
        pub pw_dir: *mut ::c_char,
        pub pw_shell: *mut ::c_char,
        pub pw_expire: ::time_t,

        #[cfg(not(any(target_os = "macos",
                      target_os = "ios",
                      target_os = "netbsd",
                      target_os = "openbsd")))]
        pub pw_fields: ::c_int,
    }

    pub struct ifaddrs {
        pub ifa_next: *mut ifaddrs,
        pub ifa_name: *mut ::c_char,
        pub ifa_flags: ::c_uint,
        pub ifa_addr: *mut ::sockaddr,
        pub ifa_netmask: *mut ::sockaddr,
        pub ifa_dstaddr: *mut ::sockaddr,
        pub ifa_data: *mut ::c_void
    }

    pub struct fd_set {
        #[cfg(all(target_pointer_width = "64",
                  any(target_os = "freebsd", target_os = "dragonfly")))]
        fds_bits: [i64; FD_SETSIZE / 64],
        #[cfg(not(all(target_pointer_width = "64",
                      any(target_os = "freebsd", target_os = "dragonfly"))))]
        fds_bits: [i32; FD_SETSIZE / 32],
    }

    pub struct tm {
        pub tm_sec: ::c_int,
        pub tm_min: ::c_int,
        pub tm_hour: ::c_int,
        pub tm_mday: ::c_int,
        pub tm_mon: ::c_int,
        pub tm_year: ::c_int,
        pub tm_wday: ::c_int,
        pub tm_yday: ::c_int,
        pub tm_isdst: ::c_int,
        pub tm_gmtoff: ::c_long,
        pub tm_zone: *mut ::c_char,
    }

    pub struct utsname {
        #[cfg(not(target_os = "dragonfly"))]
        pub sysname: [::c_char; 256],
        #[cfg(target_os = "dragonfly")]
        pub sysname: [::c_char; 32],
        #[cfg(not(target_os = "dragonfly"))]
        pub nodename: [::c_char; 256],
        #[cfg(target_os = "dragonfly")]
        pub nodename: [::c_char; 32],
        #[cfg(not(target_os = "dragonfly"))]
        pub release: [::c_char; 256],
        #[cfg(target_os = "dragonfly")]
        pub release: [::c_char; 32],
        #[cfg(not(target_os = "dragonfly"))]
        pub version: [::c_char; 256],
        #[cfg(target_os = "dragonfly")]
        pub version: [::c_char; 32],
        #[cfg(not(target_os = "dragonfly"))]
        pub machine: [::c_char; 256],
        #[cfg(target_os = "dragonfly")]
        pub machine: [::c_char; 32],
    }

    pub struct msghdr {
        pub msg_name: *mut ::c_void,
        pub msg_namelen: ::socklen_t,
        pub msg_iov: *mut ::iovec,
        pub msg_iovlen: ::c_int,
        pub msg_control: *mut ::c_void,
        pub msg_controllen: ::socklen_t,
        pub msg_flags: ::c_int,
    }

    pub struct cmsghdr {
        pub cmsg_len: ::socklen_t,
        pub cmsg_level: ::c_int,
        pub cmsg_type: ::c_int,
    }

    pub struct fsid_t {
        __fsid_val: [::int32_t; 2],
    }

    pub struct if_nameindex {
        pub if_index: ::c_uint,
        pub if_name: *mut ::c_char,
    }
}

pub const LC_ALL: ::c_int = 0;
pub const LC_COLLATE: ::c_int = 1;
pub const LC_CTYPE: ::c_int = 2;
pub const LC_MONETARY: ::c_int = 3;
pub const LC_NUMERIC: ::c_int = 4;
pub const LC_TIME: ::c_int = 5;
pub const LC_MESSAGES: ::c_int = 6;

pub const FIOCLEX: ::c_ulong = 0x20006601;
pub const FIONBIO: ::c_ulong = 0x8004667e;

pub const PATH_MAX: ::c_int = 1024;

pub const SA_ONSTACK: ::c_int = 0x0001;
pub const SA_SIGINFO: ::c_int = 0x0040;
pub const SA_RESTART: ::c_int = 0x0002;
pub const SA_RESETHAND: ::c_int = 0x0004;
pub const SA_NOCLDSTOP: ::c_int = 0x0008;
pub const SA_NODEFER: ::c_int = 0x0010;
pub const SA_NOCLDWAIT: ::c_int = 0x0020;

pub const SS_ONSTACK: ::c_int = 1;
pub const SS_DISABLE: ::c_int = 4;

pub const SIGCHLD: ::c_int = 20;
pub const SIGBUS: ::c_int = 10;
pub const SIGUSR1: ::c_int = 30;
pub const SIGUSR2: ::c_int = 31;
pub const SIGCONT: ::c_int = 19;
pub const SIGSTOP: ::c_int = 17;
pub const SIGTSTP: ::c_int = 18;
pub const SIGURG: ::c_int = 16;
pub const SIGIO: ::c_int = 23;
pub const SIGSYS: ::c_int = 12;
pub const SIGTTIN: ::c_int = 21;
pub const SIGTTOU: ::c_int = 22;
pub const SIGXCPU: ::c_int = 24;
pub const SIGXFSZ: ::c_int = 25;
pub const SIGVTALRM: ::c_int = 26;
pub const SIGPROF: ::c_int = 27;
pub const SIGWINCH: ::c_int = 28;
pub const SIGINFO: ::c_int = 29;

pub const SIG_SETMASK: ::c_int = 3;
pub const SIG_BLOCK: ::c_int = 0x1;
pub const SIG_UNBLOCK: ::c_int = 0x2;

pub const IP_MULTICAST_IF: ::c_int = 9;
pub const IP_MULTICAST_TTL: ::c_int = 10;
pub const IP_MULTICAST_LOOP: ::c_int = 11;

pub const IPV6_MULTICAST_LOOP: ::c_int = 11;
pub const IPV6_V6ONLY: ::c_int = 27;

pub const ST_RDONLY: ::c_ulong = 1;

pub const SCM_RIGHTS: ::c_int = 0x01;

pub const NCCS: usize = 20;

pub const O_ACCMODE: ::c_int = 0x3;
pub const O_RDONLY: ::c_int = 0;
pub const O_WRONLY: ::c_int = 1;
pub const O_RDWR: ::c_int = 2;
pub const O_APPEND: ::c_int = 8;
pub const O_CREAT: ::c_int = 512;
pub const O_TRUNC: ::c_int = 1024;
pub const O_EXCL: ::c_int = 2048;
pub const O_ASYNC: ::c_int = 0x40;
pub const O_SYNC: ::c_int = 0x80;
pub const O_NONBLOCK: ::c_int = 0x4;
pub const O_NOFOLLOW: ::c_int = 0x100;
pub const O_SHLOCK: ::c_int = 0x10;
pub const O_EXLOCK: ::c_int = 0x20;
pub const O_FSYNC: ::c_int = O_SYNC;
pub const O_NDELAY: ::c_int = O_NONBLOCK;

pub const F_GETOWN: ::c_int = 5;
pub const F_SETOWN: ::c_int = 6;

pub const MNT_FORCE: ::c_int = 0x80000;

pub const Q_SYNC: ::c_int = 0x600;
pub const Q_QUOTAON: ::c_int = 0x100;
pub const Q_QUOTAOFF: ::c_int = 0x200;

pub const TCIOFF: ::c_int = 3;
pub const TCION: ::c_int = 4;
pub const TCOOFF: ::c_int = 1;
pub const TCOON: ::c_int = 2;
pub const TCIFLUSH: ::c_int = 1;
pub const TCOFLUSH: ::c_int = 2;
pub const TCIOFLUSH: ::c_int = 3;
pub const TCSANOW: ::c_int = 0;
pub const TCSADRAIN: ::c_int = 1;
pub const TCSAFLUSH: ::c_int = 2;
pub const VEOF: usize = 0;
pub const VEOL: usize = 1;
pub const VEOL2: usize = 2;
pub const VERASE: usize = 3;
pub const VWERASE: usize = 4;
pub const VKILL: usize = 5;
pub const VREPRINT: usize = 6;
pub const VINTR: usize = 8;
pub const VQUIT: usize = 9;
pub const VSUSP: usize = 10;
pub const VDSUSP: usize = 11;
pub const VSTART: usize = 12;
pub const VSTOP: usize = 13;
pub const VLNEXT: usize = 14;
pub const VDISCARD: usize = 15;
pub const VMIN: usize = 16;
pub const VTIME: usize = 17;
pub const VSTATUS: usize = 18;
pub const _POSIX_VDISABLE: ::cc_t = 0xff;
pub const IGNBRK: ::tcflag_t = 0x00000001;
pub const BRKINT: ::tcflag_t = 0x00000002;
pub const IGNPAR: ::tcflag_t = 0x00000004;
pub const PARMRK: ::tcflag_t = 0x00000008;
pub const INPCK: ::tcflag_t = 0x00000010;
pub const ISTRIP: ::tcflag_t = 0x00000020;
pub const INLCR: ::tcflag_t = 0x00000040;
pub const IGNCR: ::tcflag_t = 0x00000080;
pub const ICRNL: ::tcflag_t = 0x00000100;
pub const IXON: ::tcflag_t = 0x00000200;
pub const IXOFF: ::tcflag_t = 0x00000400;
pub const IXANY: ::tcflag_t = 0x00000800;
pub const IMAXBEL: ::tcflag_t = 0x00002000;
pub const OPOST: ::tcflag_t = 0x1;
pub const ONLCR: ::tcflag_t = 0x2;
pub const OXTABS: ::tcflag_t = 0x4;
pub const ONOEOT: ::tcflag_t = 0x8;
pub const CIGNORE: ::tcflag_t = 0x00000001;
pub const CSIZE: ::tcflag_t = 0x00000300;
pub const CS5: ::tcflag_t = 0x00000000;
pub const CS6: ::tcflag_t = 0x00000100;
pub const CS7: ::tcflag_t = 0x00000200;
pub const CS8: ::tcflag_t = 0x00000300;
pub const CSTOPB: ::tcflag_t = 0x00000400;
pub const CREAD: ::tcflag_t = 0x00000800;
pub const PARENB: ::tcflag_t = 0x00001000;
pub const PARODD: ::tcflag_t = 0x00002000;
pub const HUPCL: ::tcflag_t = 0x00004000;
pub const CLOCAL: ::tcflag_t = 0x00008000;
pub const ECHOKE: ::tcflag_t = 0x00000001;
pub const ECHOE: ::tcflag_t = 0x00000002;
pub const ECHOK: ::tcflag_t = 0x00000004;
pub const ECHO: ::tcflag_t = 0x00000008;
pub const ECHONL: ::tcflag_t = 0x00000010;
pub const ECHOPRT: ::tcflag_t = 0x00000020;
pub const ECHOCTL: ::tcflag_t = 0x00000040;
pub const ISIG: ::tcflag_t = 0x00000080;
pub const ICANON: ::tcflag_t = 0x00000100;
pub const ALTWERASE: ::tcflag_t = 0x00000200;
pub const IEXTEN: ::tcflag_t = 0x00000400;
pub const EXTPROC: ::tcflag_t = 0x00000800;
pub const TOSTOP: ::tcflag_t = 0x00400000;
pub const FLUSHO: ::tcflag_t = 0x00800000;
pub const NOKERNINFO: ::tcflag_t = 0x02000000;
pub const PENDIN: ::tcflag_t = 0x20000000;
pub const NOFLSH: ::tcflag_t = 0x80000000;
pub const MDMBUF: ::tcflag_t = 0x00100000;

pub const WNOHANG: ::c_int = 0x00000001;
pub const WUNTRACED: ::c_int = 0x00000002;

pub const RTLD_NOW: ::c_int = 0x2;
pub const RTLD_NEXT: *mut ::c_void = -1isize as *mut ::c_void;
pub const RTLD_DEFAULT: *mut ::c_void = -2isize as *mut ::c_void;
pub const RTLD_SELF: *mut ::c_void = -3isize as *mut ::c_void;

pub const LOG_CRON: ::c_int = 9 << 3;
pub const LOG_AUTHPRIV: ::c_int = 10 << 3;
pub const LOG_FTP: ::c_int = 11 << 3;
pub const LOG_PERROR: ::c_int = 0x20;

pub const TCP_MAXSEG: ::c_int = 2;

pub const PIPE_BUF: usize = 512;

pub const POLLRDNORM: ::c_short = 0x040;
pub const POLLWRNORM: ::c_short = 0x004;
pub const POLLRDBAND: ::c_short = 0x080;
pub const POLLWRBAND: ::c_short = 0x100;

f! {
    pub fn FD_CLR(fd: ::c_int, set: *mut fd_set) -> () {
        let bits = mem::size_of_val(&(*set).fds_bits[0]) * 8;
        let fd = fd as usize;
        (*set).fds_bits[fd / bits] &= !(1 << (fd % bits));
        return
    }

    pub fn FD_ISSET(fd: ::c_int, set: *mut fd_set) -> bool {
        let bits = mem::size_of_val(&(*set).fds_bits[0]) * 8;
        let fd = fd as usize;
        return ((*set).fds_bits[fd / bits] & (1 << (fd % bits))) != 0
    }

    pub fn FD_SET(fd: ::c_int, set: *mut fd_set) -> () {
        let bits = mem::size_of_val(&(*set).fds_bits[0]) * 8;
        let fd = fd as usize;
        (*set).fds_bits[fd / bits] |= 1 << (fd % bits);
        return
    }

    pub fn FD_ZERO(set: *mut fd_set) -> () {
        for slot in (*set).fds_bits.iter_mut() {
            *slot = 0;
        }
    }

    pub fn WTERMSIG(status: ::c_int) -> ::c_int {
        status & 0o177
    }

    pub fn WIFEXITED(status: ::c_int) -> bool {
        (status & 0o177) == 0
    }

    pub fn WEXITSTATUS(status: ::c_int) -> ::c_int {
        status >> 8
    }

    pub fn WCOREDUMP(status: ::c_int) -> bool {
        (status & 0o200) != 0
    }
}

extern {
    pub fn getifaddrs(ifap: *mut *mut ::ifaddrs) -> ::c_int;
    pub fn freeifaddrs(ifa: *mut ::ifaddrs);
    pub fn setgroups(ngroups: ::c_int,
                     ptr: *const ::gid_t) -> ::c_int;
    pub fn ioctl(fd: ::c_int, request: ::c_ulong, ...) -> ::c_int;
    pub fn kqueue() -> ::c_int;
    pub fn unmount(target: *const ::c_char, arg: ::c_int) -> ::c_int;
    pub fn syscall(num: ::c_int, ...) -> ::c_int;
    #[cfg_attr(target_os = "netbsd", link_name = "__getpwent50")]
    pub fn getpwent() -> *mut passwd;
    pub fn setpwent();
    pub fn endpwent();
    pub fn getprogname() -> *const ::c_char;
    pub fn setprogname(name: *const ::c_char);
    pub fn getloadavg(loadavg: *mut ::c_double, nelem: ::c_int) -> ::c_int;
    pub fn if_nameindex() -> *mut if_nameindex;
    pub fn if_freenameindex(ptr: *mut if_nameindex);

    pub fn getpeereid(socket: ::c_int,
                      euid: *mut ::uid_t,
                      egid: *mut ::gid_t) -> ::c_int;

    #[cfg_attr(target_os = "macos", link_name = "glob$INODE64")]
    #[cfg_attr(target_os = "netbsd", link_name = "__glob30")]
    pub fn glob(pattern: *const ::c_char,
                flags: ::c_int,
                errfunc: Option<extern fn(epath: *const ::c_char,
                                          errno: ::c_int) -> ::c_int>,
                pglob: *mut ::glob_t) -> ::c_int;
    #[cfg_attr(target_os = "netbsd", link_name = "__globfree30")]
    pub fn globfree(pglob: *mut ::glob_t);

    pub fn posix_madvise(addr: *mut ::c_void, len: ::size_t, advice: ::c_int)
                         -> ::c_int;

    pub fn shm_unlink(name: *const ::c_char) -> ::c_int;

    #[cfg_attr(all(target_os = "macos", target_arch = "x86_64"),
               link_name = "seekdir$INODE64")]
    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "seekdir$INODE64$UNIX2003")]
    pub fn seekdir(dirp: *mut ::DIR, loc: ::c_long);

    #[cfg_attr(all(target_os = "macos", target_arch = "x86_64"),
               link_name = "telldir$INODE64")]
    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "telldir$INODE64$UNIX2003")]
    pub fn telldir(dirp: *mut ::DIR) -> ::c_long;
    pub fn madvise(addr: *mut ::c_void, len: ::size_t, advice: ::c_int)
                  -> ::c_int;

    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "msync$UNIX2003")]
    #[cfg_attr(target_os = "netbsd", link_name = "__msync13")]
    pub fn msync(addr: *mut ::c_void, len: ::size_t, flags: ::c_int) -> ::c_int;

    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "recvfrom$UNIX2003")]
    pub fn recvfrom(socket: ::c_int, buf: *mut ::c_void, len: ::size_t,
                    flags: ::c_int, addr: *mut ::sockaddr,
                    addrlen: *mut ::socklen_t) -> ::ssize_t;
    pub fn mkstemps(template: *mut ::c_char, suffixlen: ::c_int) -> ::c_int;
    pub fn futimes(fd: ::c_int, times: *const ::timeval) -> ::c_int;
    pub fn nl_langinfo(item: ::nl_item) -> *mut ::c_char;

    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "bind$UNIX2003")]
    pub fn bind(socket: ::c_int, address: *const ::sockaddr,
                address_len: ::socklen_t) -> ::c_int;

    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "writev$UNIX2003")]
    pub fn writev(fd: ::c_int,
                  iov: *const ::iovec,
                  iovcnt: ::c_int) -> ::ssize_t;
    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "readv$UNIX2003")]
    pub fn readv(fd: ::c_int,
                 iov: *const ::iovec,
                 iovcnt: ::c_int) -> ::ssize_t;

    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "sendmsg$UNIX2003")]
    pub fn sendmsg(fd: ::c_int,
                   msg: *const ::msghdr,
                   flags: ::c_int) -> ::ssize_t;
    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "recvmsg$UNIX2003")]
    pub fn recvmsg(fd: ::c_int, msg: *mut ::msghdr, flags: ::c_int)
                   -> ::ssize_t;

    pub fn sync();
    #[cfg_attr(target_os = "solaris", link_name = "__posix_getgrgid_r")]
    pub fn getgrgid_r(uid: ::uid_t,
                      grp: *mut ::group,
                      buf: *mut ::c_char,
                      buflen: ::size_t,
                      result: *mut *mut ::group) -> ::c_int;
    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "sigaltstack$UNIX2003")]
    #[cfg_attr(target_os = "netbsd", link_name = "__sigaltstack14")]
    pub fn sigaltstack(ss: *const stack_t,
                       oss: *mut stack_t) -> ::c_int;
    pub fn sem_close(sem: *mut sem_t) -> ::c_int;
    pub fn getdtablesize() -> ::c_int;
    #[cfg_attr(target_os = "solaris", link_name = "__posix_getgrnam_r")]
    pub fn getgrnam_r(name: *const ::c_char,
                      grp: *mut ::group,
                      buf: *mut ::c_char,
                      buflen: ::size_t,
                      result: *mut *mut ::group) -> ::c_int;
    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "pthread_sigmask$UNIX2003")]
    pub fn pthread_sigmask(how: ::c_int, set: *const sigset_t,
                           oldset: *mut sigset_t) -> ::c_int;
    pub fn sem_open(name: *const ::c_char, oflag: ::c_int, ...) -> *mut sem_t;
    pub fn getgrnam(name: *const ::c_char) -> *mut ::group;
    pub fn pthread_kill(thread: ::pthread_t, sig: ::c_int) -> ::c_int;
    pub fn sem_unlink(name: *const ::c_char) -> ::c_int;
    pub fn daemon(nochdir: ::c_int, noclose: ::c_int) -> ::c_int;
    #[cfg_attr(target_os = "netbsd", link_name = "__getpwnam_r50")]
    #[cfg_attr(target_os = "solaris", link_name = "__posix_getpwnam_r")]
    pub fn getpwnam_r(name: *const ::c_char,
                      pwd: *mut passwd,
                      buf: *mut ::c_char,
                      buflen: ::size_t,
                      result: *mut *mut passwd) -> ::c_int;
    #[cfg_attr(target_os = "netbsd", link_name = "__getpwuid_r50")]
    #[cfg_attr(target_os = "solaris", link_name = "__posix_getpwuid_r")]
    pub fn getpwuid_r(uid: ::uid_t,
                      pwd: *mut passwd,
                      buf: *mut ::c_char,
                      buflen: ::size_t,
                      result: *mut *mut passwd) -> ::c_int;
    #[cfg_attr(all(target_os = "macos", target_arch ="x86"),
               link_name = "sigwait$UNIX2003")]
    #[cfg_attr(target_os = "solaris", link_name = "__posix_sigwait")]
    pub fn sigwait(set: *const sigset_t,
                   sig: *mut ::c_int) -> ::c_int;
    pub fn pthread_atfork(prepare: Option<unsafe extern fn()>,
                          parent: Option<unsafe extern fn()>,
                          child: Option<unsafe extern fn()>) -> ::c_int;
    pub fn getgrgid(gid: ::gid_t) -> *mut ::group;
    #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
               link_name = "popen$UNIX2003")]
    pub fn popen(command: *const c_char,
                 mode: *const c_char) -> *mut ::FILE;
    pub fn faccessat(dirfd: ::c_int, pathname: *const ::c_char,
                     mode: ::c_int, flags: ::c_int) -> ::c_int;
    pub fn pthread_create(native: *mut ::pthread_t,
                          attr: *const ::pthread_attr_t,
                          f: extern fn(*mut ::c_void) -> *mut ::c_void,
                          value: *mut ::c_void) -> ::c_int;
}

cfg_if! {
    if #[cfg(any(target_os = "macos", target_os = "ios"))] {
        mod apple;
        pub use self::apple::*;
    } else if #[cfg(any(target_os = "openbsd", target_os = "netbsd",
                        target_os = "bitrig"))] {
        mod netbsdlike;
        pub use self::netbsdlike::*;
    } else if #[cfg(any(target_os = "freebsd", target_os = "dragonfly"))] {
        mod freebsdlike;
        pub use self::freebsdlike::*;
    } else {
        // Unknown target_os
    }
}