src/liblibc/src/unix/mod.rs

   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 use dox::Option;
   7
   8 pub type pid_t = i32;
   9 pub type uid_t = u32;
  10 pub type gid_t = u32;
  11 pub type in_addr_t = u32;
  12 pub type in_port_t = u16;
  13 pub type sighandler_t = ::size_t;
  14 pub type cc_t = ::c_uchar;
  15
  16 pub enum DIR {}
  17 pub enum locale_t {}
  18
  19 s! {
  20     pub struct group {
  21         pub gr_name: *mut ::c_char,
  22         pub gr_passwd: *mut ::c_char,
  23         pub gr_gid: ::gid_t,
  24         pub gr_mem: *mut *mut ::c_char,
  25     }
  26
  27     pub struct utimbuf {
  28         pub actime: time_t,
  29         pub modtime: time_t,
  30     }
  31
  32     pub struct timeval {
  33         pub tv_sec: time_t,
  34         pub tv_usec: suseconds_t,
  35     }
  36
  37     pub struct timespec {
  38         pub tv_sec: time_t,
  39         pub tv_nsec: c_long,
  40     }
  41
  42     pub struct rlimit {
  43         pub rlim_cur: rlim_t,
  44         pub rlim_max: rlim_t,
  45     }
  46
  47     pub struct rusage {
  48         pub ru_utime: timeval,
  49         pub ru_stime: timeval,
  50         pub ru_maxrss: c_long,
  51         pub ru_ixrss: c_long,
  52         pub ru_idrss: c_long,
  53         pub ru_isrss: c_long,
  54         pub ru_minflt: c_long,
  55         pub ru_majflt: c_long,
  56         pub ru_nswap: c_long,
  57         pub ru_inblock: c_long,
  58         pub ru_oublock: c_long,
  59         pub ru_msgsnd: c_long,
  60         pub ru_msgrcv: c_long,
  61         pub ru_nsignals: c_long,
  62         pub ru_nvcsw: c_long,
  63         pub ru_nivcsw: c_long,
  64
  65         #[cfg(any(target_env = "musl"))]
  66         __reserved: [c_long; 16],
  67     }
  68
  69     #[cfg_attr(target_os = "netbsd", repr(packed))]
  70     pub struct in_addr {
  71         pub s_addr: in_addr_t,
  72     }
  73
  74     pub struct in6_addr {
  75         pub s6_addr: [u8; 16],
  76         __align: [u32; 0],
  77     }
  78
  79     pub struct ip_mreq {
  80         pub imr_multiaddr: in_addr,
  81         pub imr_interface: in_addr,
  82     }
  83
  84     pub struct ipv6_mreq {
  85         pub ipv6mr_multiaddr: in6_addr,
  86         #[cfg(target_os = "android")]
  87         pub ipv6mr_interface: ::c_int,
  88         #[cfg(not(target_os = "android"))]
  89         pub ipv6mr_interface: ::c_uint,
  90     }
  91
  92     pub struct hostent {
  93         pub h_name: *mut ::c_char,
  94         pub h_aliases: *mut *mut ::c_char,
  95         pub h_addrtype: ::c_int,
  96         pub h_length: ::c_int,
  97         pub h_addr_list: *mut *mut ::c_char,
  98     }
  99
 100     pub struct iovec {
 101         pub iov_base: *mut ::c_void,
 102         pub iov_len: ::size_t,
 103     }
 104
 105     pub struct pollfd {
 106         pub fd: ::c_int,
 107         pub events: ::c_short,
 108         pub revents: ::c_short,
 109     }
 110
 111     pub struct winsize {
 112         pub ws_row: ::c_ushort,
 113         pub ws_col: ::c_ushort,
 114         pub ws_xpixel: ::c_ushort,
 115         pub ws_ypixel: ::c_ushort,
 116     }
 117
 118     pub struct linger {
 119         pub l_onoff: ::c_int,
 120         pub l_linger: ::c_int,
 121     }
 122 }
 123
 124 pub const SIG_DFL: sighandler_t = 0 as sighandler_t;
 125 pub const SIG_IGN: sighandler_t = 1 as sighandler_t;
 126 pub const SIG_ERR: sighandler_t = !0 as sighandler_t;
 127
 128 pub const DT_FIFO: u8 = 1;
 129 pub const DT_CHR: u8 = 2;
 130 pub const DT_DIR: u8 = 4;
 131 pub const DT_BLK: u8 = 6;
 132 pub const DT_REG: u8 = 8;
 133 pub const DT_LNK: u8 = 10;
 134 pub const DT_SOCK: u8 = 12;
 135
 136 pub const FD_CLOEXEC: ::c_int = 0x1;
 137
 138 pub const USRQUOTA: ::c_int = 0;
 139 pub const GRPQUOTA: ::c_int = 1;
 140
 141 pub const SIGIOT: ::c_int = 6;
 142
 143 pub const S_ISUID: ::c_int = 0x800;
 144 pub const S_ISGID: ::c_int = 0x400;
 145 pub const S_ISVTX: ::c_int = 0x200;
 146
 147 pub const POLLIN: ::c_short = 0x1;
 148 pub const POLLPRI: ::c_short = 0x2;
 149 pub const POLLOUT: ::c_short = 0x4;
 150 pub const POLLERR: ::c_short = 0x8;
 151 pub const POLLHUP: ::c_short = 0x10;
 152 pub const POLLNVAL: ::c_short = 0x20;
 153
 154 pub const IF_NAMESIZE: ::size_t = 16;
 155
 156 pub const RTLD_LAZY: ::c_int = 0x1;
 157
 158 pub const LOG_EMERG: ::c_int = 0;
 159 pub const LOG_ALERT: ::c_int = 1;
 160 pub const LOG_CRIT: ::c_int = 2;
 161 pub const LOG_ERR: ::c_int = 3;
 162 pub const LOG_WARNING: ::c_int = 4;
 163 pub const LOG_NOTICE: ::c_int = 5;
 164 pub const LOG_INFO: ::c_int = 6;
 165 pub const LOG_DEBUG: ::c_int = 7;
 166
 167 pub const LOG_KERN: ::c_int = 0;
 168 pub const LOG_USER: ::c_int = 1 << 3;
 169 pub const LOG_MAIL: ::c_int = 2 << 3;
 170 pub const LOG_DAEMON: ::c_int = 3 << 3;
 171 pub const LOG_AUTH: ::c_int = 4 << 3;
 172 pub const LOG_SYSLOG: ::c_int = 5 << 3;
 173 pub const LOG_LPR: ::c_int = 6 << 3;
 174 pub const LOG_NEWS: ::c_int = 7 << 3;
 175 pub const LOG_UUCP: ::c_int = 8 << 3;
 176 pub const LOG_LOCAL0: ::c_int = 16 << 3;
 177 pub const LOG_LOCAL1: ::c_int = 17 << 3;
 178 pub const LOG_LOCAL2: ::c_int = 18 << 3;
 179 pub const LOG_LOCAL3: ::c_int = 19 << 3;
 180 pub const LOG_LOCAL4: ::c_int = 20 << 3;
 181 pub const LOG_LOCAL5: ::c_int = 21 << 3;
 182 pub const LOG_LOCAL6: ::c_int = 22 << 3;
 183 pub const LOG_LOCAL7: ::c_int = 23 << 3;
 184
 185 pub const LOG_PID: ::c_int = 0x01;
 186 pub const LOG_CONS: ::c_int = 0x02;
 187 pub const LOG_ODELAY: ::c_int = 0x04;
 188 pub const LOG_NDELAY: ::c_int = 0x08;
 189 pub const LOG_NOWAIT: ::c_int = 0x10;
 190
 191 pub const LOG_PRIMASK: ::c_int = 7;
 192 pub const LOG_FACMASK: ::c_int = 0x3f8;
 193
 194 pub const PRIO_PROCESS: ::c_int = 0;
 195 pub const PRIO_PGRP: ::c_int = 1;
 196 pub const PRIO_USER: ::c_int = 2;
 197
 198 pub const PRIO_MIN: ::c_int = -20;
 199 pub const PRIO_MAX: ::c_int = 20;
 200
 201 cfg_if! {
 202     if #[cfg(dox)] {
 203         // on dox builds don't pull in anything
 204     } else if #[cfg(all(not(stdbuild), feature = "use_std"))] {
 205         // cargo build, don't pull in anything extra as the libstd  dep
 206         // already pulls in all libs.
 207     } else if #[cfg(any(all(target_env = "musl", not(target_arch = "mips"))))] {
 208         #[link(name = "c", kind = "static")]
 209         extern {}
 210     } else if #[cfg(target_os = "emscripten")] {
 211         #[link(name = "c")]
 212         extern {}
 213     } else if #[cfg(all(target_os = "netbsd", target_vendor = "rumprun"))] {
 214         // Since we don't use -nodefaultlibs on Rumprun, libc is always pulled
 215         // in automatically by the linker. We avoid passing it explicitly, as it
 216         // causes some versions of binutils to crash with an assertion failure.
 217         #[link(name = "m")]
 218         extern {}
 219     } else if #[cfg(any(target_os = "macos",
 220                         target_os = "ios",
 221                         target_os = "android",
 222                         target_os = "openbsd",
 223                         target_os = "bitrig"))] {
 224         #[link(name = "c")]
 225         #[link(name = "m")]
 226         extern {}
 227     } else if #[cfg(target_os = "haiku")] {
 228         #[link(name = "root")]
 229         #[link(name = "network")]
 230         extern {}
 231     } else {
 232         #[link(name = "c")]
 233         #[link(name = "m")]
 234         #[link(name = "rt")]
 235         extern {}
 236     }
 237 }
 238
 239 extern {
 240     pub fn getgrnam(name: *const ::c_char) -> *mut group;
 241     pub fn getgrgid(gid: ::gid_t) -> *mut group;
 242
 243     pub fn endpwent();
 244     #[cfg_attr(target_os = "netbsd", link_name = "__getpwnam50")]
 245     pub fn getpwnam(name: *const ::c_char) -> *mut passwd;
 246     #[cfg_attr(target_os = "netbsd", link_name = "__getpwuid50")]
 247     pub fn getpwuid(uid: ::uid_t) -> *mut passwd;
 248
 249     pub fn fprintf(stream: *mut ::FILE,
 250                    format: *const ::c_char, ...) -> ::c_int;
 251     pub fn printf(format: *const ::c_char, ...) -> ::c_int;
 252     pub fn snprintf(s: *mut ::c_char, n: ::size_t,
 253                     format: *const ::c_char, ...) -> ::c_int;
 254     pub fn sprintf(s: *mut ::c_char, format: *const ::c_char, ...) -> ::c_int;
 255     pub fn fscanf(stream: *mut ::FILE, format: *const ::c_char, ...) -> ::c_int;
 256     pub fn scanf(format: *const ::c_char, ...) -> ::c_int;
 257     pub fn sscanf(s: *const ::c_char, format: *const ::c_char, ...) -> ::c_int;
 258     pub fn getchar_unlocked() -> ::c_int;
 259     pub fn putchar_unlocked(c: ::c_int) -> ::c_int;
 260
 261     #[cfg_attr(target_os = "netbsd", link_name = "__socket30")]
 262     pub fn socket(domain: ::c_int, ty: ::c_int, protocol: ::c_int) -> ::c_int;
 263     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 264                link_name = "connect$UNIX2003")]
 265     pub fn connect(socket: ::c_int, address: *const sockaddr,
 266                    len: socklen_t) -> ::c_int;
 267     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 268                link_name = "bind$UNIX2003")]
 269     pub fn bind(socket: ::c_int, address: *const sockaddr,
 270                 address_len: socklen_t) -> ::c_int;
 271     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 272                link_name = "listen$UNIX2003")]
 273     pub fn listen(socket: ::c_int, backlog: ::c_int) -> ::c_int;
 274     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 275                link_name = "accept$UNIX2003")]
 276     pub fn accept(socket: ::c_int, address: *mut sockaddr,
 277                   address_len: *mut socklen_t) -> ::c_int;
 278     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 279                link_name = "getpeername$UNIX2003")]
 280     pub fn getpeername(socket: ::c_int, address: *mut sockaddr,
 281                        address_len: *mut socklen_t) -> ::c_int;
 282     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 283                link_name = "getsockname$UNIX2003")]
 284     pub fn getsockname(socket: ::c_int, address: *mut sockaddr,
 285                        address_len: *mut socklen_t) -> ::c_int;
 286     pub fn setsockopt(socket: ::c_int, level: ::c_int, name: ::c_int,
 287                       value: *const ::c_void,
 288                       option_len: socklen_t) -> ::c_int;
 289     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 290                link_name = "socketpair$UNIX2003")]
 291     pub fn socketpair(domain: ::c_int, type_: ::c_int, protocol: ::c_int,
 292                       socket_vector: *mut ::c_int) -> ::c_int;
 293     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 294                link_name = "sendto$UNIX2003")]
 295     pub fn sendto(socket: ::c_int, buf: *const ::c_void, len: ::size_t,
 296                   flags: ::c_int, addr: *const sockaddr,
 297                   addrlen: socklen_t) -> ::ssize_t;
 298     pub fn shutdown(socket: ::c_int, how: ::c_int) -> ::c_int;
 299
 300     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 301                link_name = "chmod$UNIX2003")]
 302     pub fn chmod(path: *const c_char, mode: mode_t) -> ::c_int;
 303     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 304                link_name = "fchmod$UNIX2003")]
 305     pub fn fchmod(fd: ::c_int, mode: mode_t) -> ::c_int;
 306
 307     #[cfg_attr(target_os = "macos", link_name = "fstat$INODE64")]
 308     #[cfg_attr(target_os = "netbsd", link_name = "__fstat50")]
 309     pub fn fstat(fildes: ::c_int, buf: *mut stat) -> ::c_int;
 310
 311     pub fn mkdir(path: *const c_char, mode: mode_t) -> ::c_int;
 312
 313     #[cfg_attr(target_os = "macos", link_name = "stat$INODE64")]
 314     #[cfg_attr(target_os = "netbsd", link_name = "__stat50")]
 315     pub fn stat(path: *const c_char, buf: *mut stat) -> ::c_int;
 316
 317     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 318                link_name = "popen$UNIX2003")]
 319     pub fn popen(command: *const c_char,
 320                  mode: *const c_char) -> *mut ::FILE;
 321     pub fn pclose(stream: *mut ::FILE) -> ::c_int;
 322     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 323                link_name = "fdopen$UNIX2003")]
 324     pub fn fdopen(fd: ::c_int, mode: *const c_char) -> *mut ::FILE;
 325     pub fn fileno(stream: *mut ::FILE) -> ::c_int;
 326
 327     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 328                link_name = "open$UNIX2003")]
 329     pub fn open(path: *const c_char, oflag: ::c_int, ...) -> ::c_int;
 330     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 331                link_name = "creat$UNIX2003")]
 332     pub fn creat(path: *const c_char, mode: mode_t) -> ::c_int;
 333     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 334                link_name = "fcntl$UNIX2003")]
 335     pub fn fcntl(fd: ::c_int, cmd: ::c_int, ...) -> ::c_int;
 336
 337     #[cfg_attr(all(target_os = "macos", target_arch = "x86_64"),
 338                link_name = "opendir$INODE64")]
 339     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 340                link_name = "opendir$INODE64$UNIX2003")]
 341     #[cfg_attr(target_os = "netbsd", link_name = "__opendir30")]
 342     pub fn opendir(dirname: *const c_char) -> *mut ::DIR;
 343     #[cfg_attr(target_os = "macos", link_name = "readdir_r$INODE64")]
 344     #[cfg_attr(target_os = "netbsd", link_name = "__readdir_r30")]
 345     pub fn readdir_r(dirp: *mut ::DIR, entry: *mut ::dirent,
 346                      result: *mut *mut ::dirent) -> ::c_int;
 347     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 348                link_name = "closedir$UNIX2003")]
 349     pub fn closedir(dirp: *mut ::DIR) -> ::c_int;
 350     #[cfg_attr(all(target_os = "macos", target_arch = "x86_64"),
 351                link_name = "rewinddir$INODE64")]
 352     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 353                link_name = "rewinddir$INODE64$UNIX2003")]
 354     pub fn rewinddir(dirp: *mut ::DIR);
 355
 356     pub fn access(path: *const c_char, amode: ::c_int) -> ::c_int;
 357     pub fn alarm(seconds: ::c_uint) -> ::c_uint;
 358     pub fn chdir(dir: *const c_char) -> ::c_int;
 359     pub fn chown(path: *const c_char, uid: uid_t,
 360                  gid: gid_t) -> ::c_int;
 361     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 362                link_name = "lchown$UNIX2003")]
 363     pub fn lchown(path: *const c_char, uid: uid_t,
 364                   gid: gid_t) -> ::c_int;
 365     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 366                link_name = "close$UNIX2003")]
 367     pub fn close(fd: ::c_int) -> ::c_int;
 368     pub fn dup(fd: ::c_int) -> ::c_int;
 369     pub fn dup2(src: ::c_int, dst: ::c_int) -> ::c_int;
 370     pub fn execv(prog: *const c_char,
 371                  argv: *const *const c_char) -> ::c_int;
 372     pub fn execve(prog: *const c_char, argv: *const *const c_char,
 373                   envp: *const *const c_char)
 374                   -> ::c_int;
 375     pub fn execvp(c: *const c_char,
 376                   argv: *const *const c_char) -> ::c_int;
 377     pub fn fork() -> pid_t;
 378     pub fn fpathconf(filedes: ::c_int, name: ::c_int) -> c_long;
 379     pub fn getcwd(buf: *mut c_char, size: ::size_t) -> *mut c_char;
 380     pub fn getegid() -> gid_t;
 381     pub fn geteuid() -> uid_t;
 382     pub fn getgid() -> gid_t;
 383     pub fn getgroups(ngroups_max: ::c_int, groups: *mut gid_t)
 384                      -> ::c_int;
 385     pub fn getlogin() -> *mut c_char;
 386     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 387                link_name = "getopt$UNIX2003")]
 388     pub fn getopt(argc: ::c_int, argv: *const *mut c_char,
 389                   optstr: *const c_char) -> ::c_int;
 390     pub fn getpgid(pid: pid_t) -> pid_t;
 391     pub fn getpgrp() -> pid_t;
 392     pub fn getpid() -> pid_t;
 393     pub fn getppid() -> pid_t;
 394     pub fn getuid() -> uid_t;
 395     pub fn isatty(fd: ::c_int) -> ::c_int;
 396     pub fn link(src: *const c_char, dst: *const c_char) -> ::c_int;
 397     pub fn lseek(fd: ::c_int, offset: off_t, whence: ::c_int) -> off_t;
 398     pub fn pathconf(path: *const c_char, name: ::c_int) -> c_long;
 399     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 400                link_name = "pause$UNIX2003")]
 401     pub fn pause() -> ::c_int;
 402     pub fn pipe(fds: *mut ::c_int) -> ::c_int;
 403     pub fn posix_memalign(memptr: *mut *mut ::c_void,
 404                       align: ::size_t,
 405                       size: ::size_t) -> ::c_int;
 406     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 407                link_name = "read$UNIX2003")]
 408     pub fn read(fd: ::c_int, buf: *mut ::c_void, count: ::size_t)
 409                 -> ::ssize_t;
 410     pub fn rmdir(path: *const c_char) -> ::c_int;
 411     pub fn setgid(gid: gid_t) -> ::c_int;
 412     pub fn setpgid(pid: pid_t, pgid: pid_t) -> ::c_int;
 413     pub fn setsid() -> pid_t;
 414     pub fn setuid(uid: uid_t) -> ::c_int;
 415     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 416                link_name = "sleep$UNIX2003")]
 417     pub fn sleep(secs: ::c_uint) -> ::c_uint;
 418     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 419                link_name = "nanosleep$UNIX2003")]
 420     #[cfg_attr(target_os = "netbsd", link_name = "__nanosleep50")]
 421     pub fn nanosleep(rqtp: *const timespec,
 422                      rmtp: *mut timespec) -> ::c_int;
 423     pub fn tcgetpgrp(fd: ::c_int) -> pid_t;
 424     pub fn ttyname(fd: ::c_int) -> *mut c_char;
 425     pub fn unlink(c: *const c_char) -> ::c_int;
 426     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 427                link_name = "wait$UNIX2003")]
 428     pub fn wait(status: *mut ::c_int) -> pid_t;
 429     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 430                link_name = "waitpid$UNIX2003")]
 431     pub fn waitpid(pid: pid_t, status: *mut ::c_int, options: ::c_int)
 432                    -> pid_t;
 433     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 434                link_name = "write$UNIX2003")]
 435     pub fn write(fd: ::c_int, buf: *const ::c_void, count: ::size_t)
 436                  -> ::ssize_t;
 437     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 438                link_name = "pread$UNIX2003")]
 439     pub fn pread(fd: ::c_int, buf: *mut ::c_void, count: ::size_t,
 440                  offset: off_t) -> ::ssize_t;
 441     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 442                link_name = "pwrite$UNIX2003")]
 443     pub fn pwrite(fd: ::c_int, buf: *const ::c_void, count: ::size_t,
 444                   offset: off_t) -> ::ssize_t;
 445     pub fn umask(mask: mode_t) -> mode_t;
 446
 447     #[cfg_attr(target_os = "netbsd", link_name = "__utime50")]
 448     pub fn utime(file: *const c_char, buf: *const utimbuf) -> ::c_int;
 449
 450     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 451                    link_name = "kill$UNIX2003")]
 452     pub fn kill(pid: pid_t, sig: ::c_int) -> ::c_int;
 453
 454     pub fn mlock(addr: *const ::c_void, len: ::size_t) -> ::c_int;
 455     pub fn munlock(addr: *const ::c_void, len: ::size_t) -> ::c_int;
 456     pub fn mlockall(flags: ::c_int) -> ::c_int;
 457     pub fn munlockall() -> ::c_int;
 458
 459     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 460                link_name = "mmap$UNIX2003")]
 461     pub fn mmap(addr: *mut ::c_void,
 462                 len: ::size_t,
 463                 prot: ::c_int,
 464                 flags: ::c_int,
 465                 fd: ::c_int,
 466                 offset: off_t)
 467                 -> *mut ::c_void;
 468     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 469                link_name = "munmap$UNIX2003")]
 470     pub fn munmap(addr: *mut ::c_void, len: ::size_t) -> ::c_int;
 471
 472     pub fn if_nametoindex(ifname: *const c_char) -> ::c_uint;
 473     pub fn if_indextoname(ifindex: ::c_uint,
 474                           ifname: *mut ::c_char) -> *mut ::c_char;
 475
 476     #[cfg_attr(target_os = "macos", link_name = "lstat$INODE64")]
 477     #[cfg_attr(target_os = "netbsd", link_name = "__lstat50")]
 478     pub fn lstat(path: *const c_char, buf: *mut stat) -> ::c_int;
 479
 480     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 481                link_name = "fsync$UNIX2003")]
 482     pub fn fsync(fd: ::c_int) -> ::c_int;
 483
 484     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 485                link_name = "setenv$UNIX2003")]
 486     pub fn setenv(name: *const c_char, val: *const c_char,
 487                   overwrite: ::c_int) -> ::c_int;
 488     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 489                link_name = "unsetenv$UNIX2003")]
 490     #[cfg_attr(target_os = "netbsd", link_name = "__unsetenv13")]
 491     pub fn unsetenv(name: *const c_char) -> ::c_int;
 492
 493     pub fn symlink(path1: *const c_char,
 494                    path2: *const c_char) -> ::c_int;
 495
 496     pub fn ftruncate(fd: ::c_int, length: off_t) -> ::c_int;
 497
 498     pub fn signal(signum: ::c_int, handler: sighandler_t) -> sighandler_t;
 499
 500     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 501                link_name = "getrlimit$UNIX2003")]
 502     pub fn getrlimit(resource: ::c_int, rlim: *mut rlimit) -> ::c_int;
 503     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 504                link_name = "setrlimit$UNIX2003")]
 505     pub fn setrlimit(resource: ::c_int, rlim: *const rlimit) -> ::c_int;
 506     #[cfg_attr(target_os = "netbsd", link_name = "__getrusage50")]
 507     pub fn getrusage(resource: ::c_int, usage: *mut rusage) -> ::c_int;
 508
 509     pub fn getdtablesize() -> ::c_int;
 510     #[cfg_attr(any(target_os = "macos", target_os = "ios"),
 511                link_name = "realpath$DARWIN_EXTSN")]
 512     pub fn realpath(pathname: *const ::c_char, resolved: *mut ::c_char)
 513                     -> *mut ::c_char;
 514
 515     pub fn flock(fd: ::c_int, operation: ::c_int) -> ::c_int;
 516
 517     #[cfg_attr(target_os = "netbsd", link_name = "__gettimeofday50")]
 518     pub fn gettimeofday(tp: *mut ::timeval,
 519                         tz: *mut ::c_void) -> ::c_int;
 520
 521     pub fn pthread_self() -> ::pthread_t;
 522     pub fn pthread_create(native: *mut ::pthread_t,
 523                           attr: *const ::pthread_attr_t,
 524                           f: extern fn(*mut ::c_void) -> *mut ::c_void,
 525                           value: *mut ::c_void) -> ::c_int;
 526     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 527                link_name = "pthread_join$UNIX2003")]
 528     pub fn pthread_join(native: ::pthread_t,
 529                         value: *mut *mut ::c_void) -> ::c_int;
 530     pub fn pthread_attr_init(attr: *mut ::pthread_attr_t) -> ::c_int;
 531     pub fn pthread_attr_destroy(attr: *mut ::pthread_attr_t) -> ::c_int;
 532     pub fn pthread_attr_setstacksize(attr: *mut ::pthread_attr_t,
 533                                      stack_size: ::size_t) -> ::c_int;
 534     pub fn pthread_attr_setdetachstate(attr: *mut ::pthread_attr_t,
 535                                        state: ::c_int) -> ::c_int;
 536     pub fn pthread_detach(thread: ::pthread_t) -> ::c_int;
 537     #[cfg_attr(target_os = "netbsd", link_name = "__libc_thr_yield")]
 538     pub fn sched_yield() -> ::c_int;
 539     pub fn pthread_key_create(key: *mut pthread_key_t,
 540                               dtor: Option<unsafe extern fn(*mut ::c_void)>)
 541                               -> ::c_int;
 542     pub fn pthread_key_delete(key: pthread_key_t) -> ::c_int;
 543     pub fn pthread_getspecific(key: pthread_key_t) -> *mut ::c_void;
 544     pub fn pthread_setspecific(key: pthread_key_t, value: *const ::c_void)
 545                                -> ::c_int;
 546     pub fn pthread_mutex_init(lock: *mut pthread_mutex_t,
 547                               attr: *const pthread_mutexattr_t) -> ::c_int;
 548     pub fn pthread_mutex_destroy(lock: *mut pthread_mutex_t) -> ::c_int;
 549     pub fn pthread_mutex_lock(lock: *mut pthread_mutex_t) -> ::c_int;
 550     pub fn pthread_mutex_trylock(lock: *mut pthread_mutex_t) -> ::c_int;
 551     pub fn pthread_mutex_unlock(lock: *mut pthread_mutex_t) -> ::c_int;
 552
 553     pub fn pthread_mutexattr_init(attr: *mut pthread_mutexattr_t) -> ::c_int;
 554     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 555                link_name = "pthread_mutexattr_destroy$UNIX2003")]
 556     pub fn pthread_mutexattr_destroy(attr: *mut pthread_mutexattr_t) -> ::c_int;
 557     pub fn pthread_mutexattr_settype(attr: *mut pthread_mutexattr_t,
 558                                      _type: ::c_int) -> ::c_int;
 559
 560     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 561                link_name = "pthread_cond_init$UNIX2003")]
 562     pub fn pthread_cond_init(cond: *mut pthread_cond_t,
 563                              attr: *const pthread_condattr_t) -> ::c_int;
 564     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 565                link_name = "pthread_cond_wait$UNIX2003")]
 566     pub fn pthread_cond_wait(cond: *mut pthread_cond_t,
 567                              lock: *mut pthread_mutex_t) -> ::c_int;
 568     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 569                link_name = "pthread_cond_timedwait$UNIX2003")]
 570     pub fn pthread_cond_timedwait(cond: *mut pthread_cond_t,
 571                               lock: *mut pthread_mutex_t,
 572                               abstime: *const ::timespec) -> ::c_int;
 573     pub fn pthread_cond_signal(cond: *mut pthread_cond_t) -> ::c_int;
 574     pub fn pthread_cond_broadcast(cond: *mut pthread_cond_t) -> ::c_int;
 575     pub fn pthread_cond_destroy(cond: *mut pthread_cond_t) -> ::c_int;
 576     pub fn pthread_condattr_init(attr: *mut pthread_condattr_t) -> ::c_int;
 577     pub fn pthread_condattr_destroy(attr: *mut pthread_condattr_t) -> ::c_int;
 578     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 579                link_name = "pthread_rwlock_destroy$UNIX2003")]
 580     pub fn pthread_rwlock_destroy(lock: *mut pthread_rwlock_t) -> ::c_int;
 581     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 582                link_name = "pthread_rwlock_rdlock$UNIX2003")]
 583     pub fn pthread_rwlock_rdlock(lock: *mut pthread_rwlock_t) -> ::c_int;
 584     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 585                link_name = "pthread_rwlock_tryrdlock$UNIX2003")]
 586     pub fn pthread_rwlock_tryrdlock(lock: *mut pthread_rwlock_t) -> ::c_int;
 587     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 588                link_name = "pthread_rwlock_wrlock$UNIX2003")]
 589     pub fn pthread_rwlock_wrlock(lock: *mut pthread_rwlock_t) -> ::c_int;
 590     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 591                link_name = "pthread_rwlock_trywrlock$UNIX2003")]
 592     pub fn pthread_rwlock_trywrlock(lock: *mut pthread_rwlock_t) -> ::c_int;
 593     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 594                link_name = "pthread_rwlock_unlock$UNIX2003")]
 595     pub fn pthread_rwlock_unlock(lock: *mut pthread_rwlock_t) -> ::c_int;
 596     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 597                link_name = "pthread_sigmask$UNIX2003")]
 598     pub fn pthread_sigmask(how: ::c_int, set: *const sigset_t,
 599                            oldset: *mut sigset_t) -> ::c_int;
 600     pub fn pthread_kill(thread: ::pthread_t, sig: ::c_int) -> ::c_int;
 601     #[cfg_attr(all(target_os = "linux", not(target_env = "musl")),
 602                link_name = "__xpg_strerror_r")]
 603     pub fn strerror_r(errnum: ::c_int, buf: *mut c_char,
 604                       buflen: ::size_t) -> ::c_int;
 605
 606     pub fn getsockopt(sockfd: ::c_int,
 607                       level: ::c_int,
 608                       optname: ::c_int,
 609                       optval: *mut ::c_void,
 610                       optlen: *mut ::socklen_t) -> ::c_int;
 611     pub fn raise(signum: ::c_int) -> ::c_int;
 612     #[cfg_attr(target_os = "netbsd", link_name = "__sigaction14")]
 613     pub fn sigaction(signum: ::c_int,
 614                      act: *const sigaction,
 615                      oldact: *mut sigaction) -> ::c_int;
 616     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 617                link_name = "sigaltstack$UNIX2003")]
 618     #[cfg_attr(target_os = "netbsd", link_name = "__sigaltstack14")]
 619     pub fn sigaltstack(ss: *const stack_t,
 620                        oss: *mut stack_t) -> ::c_int;
 621     #[cfg_attr(all(target_os = "macos", target_arch ="x86"),
 622                link_name = "sigwait$UNIX2003")]
 623     pub fn sigwait(set: *const sigset_t,
 624                    sig: *mut ::c_int) -> ::c_int;
 625
 626     #[cfg_attr(target_os = "netbsd", link_name = "__utimes50")]
 627     pub fn utimes(filename: *const ::c_char,
 628                   times: *const ::timeval) -> ::c_int;
 629     pub fn dlopen(filename: *const ::c_char,
 630                   flag: ::c_int) -> *mut ::c_void;
 631     pub fn dlerror() -> *mut ::c_char;
 632     pub fn dlsym(handle: *mut ::c_void,
 633                  symbol: *const ::c_char) -> *mut ::c_void;
 634     pub fn dlclose(handle: *mut ::c_void) -> ::c_int;
 635     pub fn dladdr(addr: *const ::c_void, info: *mut Dl_info) -> ::c_int;
 636
 637     pub fn getaddrinfo(node: *const c_char,
 638                        service: *const c_char,
 639                        hints: *const addrinfo,
 640                        res: *mut *mut addrinfo) -> ::c_int;
 641     pub fn freeaddrinfo(res: *mut addrinfo);
 642     pub fn gai_strerror(errcode: ::c_int) -> *const ::c_char;
 643
 644     #[cfg_attr(target_os = "netbsd", link_name = "__gmtime_r50")]
 645     pub fn gmtime_r(time_p: *const time_t, result: *mut tm) -> *mut tm;
 646     #[cfg_attr(target_os = "netbsd", link_name = "__localtime_r50")]
 647     pub fn localtime_r(time_p: *const time_t, result: *mut tm) -> *mut tm;
 648     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 649                link_name = "mktime$UNIX2003")]
 650     #[cfg_attr(target_os = "netbsd", link_name = "__mktime50")]
 651     pub fn mktime(tm: *mut tm) -> time_t;
 652     #[cfg_attr(target_os = "netbsd", link_name = "__time50")]
 653     pub fn time(time: *mut time_t) -> time_t;
 654     #[cfg_attr(target_os = "netbsd", link_name = "__locatime50")]
 655     pub fn localtime(time: *const time_t) -> *mut tm;
 656
 657     #[cfg_attr(target_os = "netbsd", link_name = "__mknod50")]
 658     pub fn mknod(pathname: *const ::c_char, mode: ::mode_t,
 659                  dev: ::dev_t) -> ::c_int;
 660     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 661                link_name = "writev$UNIX2003")]
 662     pub fn writev(fd: ::c_int,
 663                   iov: *const ::iovec,
 664                   iovcnt: ::c_int) -> ::ssize_t;
 665     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 666                link_name = "readv$UNIX2003")]
 667     pub fn readv(fd: ::c_int,
 668                  iov: *const ::iovec,
 669                  iovcnt: ::c_int) -> ::ssize_t;
 670     pub fn uname(buf: *mut ::utsname) -> ::c_int;
 671     pub fn daemon(nochdir: ::c_int, noclose: ::c_int) -> ::c_int;
 672     pub fn gethostname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
 673     pub fn chroot(name: *const ::c_char) -> ::c_int;
 674     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 675                link_name = "usleep$UNIX2003")]
 676     pub fn usleep(secs: ::c_uint) -> ::c_int;
 677     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 678                link_name = "send$UNIX2003")]
 679     pub fn send(socket: ::c_int, buf: *const ::c_void, len: ::size_t,
 680                 flags: ::c_int) -> ::ssize_t;
 681     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 682                link_name = "recv$UNIX2003")]
 683     pub fn recv(socket: ::c_int, buf: *mut ::c_void, len: ::size_t,
 684                 flags: ::c_int) -> ::ssize_t;
 685     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 686                link_name = "putenv$UNIX2003")]
 687     #[cfg_attr(target_os = "netbsd", link_name = "__putenv50")]
 688     pub fn putenv(string: *mut c_char) -> ::c_int;
 689     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 690                link_name = "sendmsg$UNIX2003")]
 691     pub fn sendmsg(fd: ::c_int,
 692                    msg: *const msghdr,
 693                    flags: ::c_int) -> ::ssize_t;
 694     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 695                link_name = "recvmsg$UNIX2003")]
 696     pub fn recvmsg(fd: ::c_int, msg: *mut msghdr, flags: ::c_int) -> ::ssize_t;
 697     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 698                link_name = "poll$UNIX2003")]
 699     pub fn poll(fds: *mut pollfd, nfds: nfds_t, timeout: ::c_int) -> ::c_int;
 700     #[cfg_attr(all(target_os = "macos", target_arch = "x86_64"),
 701                link_name = "select$1050")]
 702     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 703                link_name = "select$UNIX2003")]
 704     #[cfg_attr(target_os = "netbsd", link_name = "__select50")]
 705     pub fn select(nfds: ::c_int,
 706                   readfs: *mut fd_set,
 707                   writefds: *mut fd_set,
 708                   errorfds: *mut fd_set,
 709                   timeout: *mut timeval) -> ::c_int;
 710     #[cfg_attr(target_os = "netbsd", link_name = "__setlocale50")]
 711     pub fn setlocale(category: ::c_int,
 712                      locale: *const ::c_char) -> *mut ::c_char;
 713     pub fn localeconv() -> *mut lconv;
 714
 715     pub fn sem_destroy(sem: *mut sem_t) -> ::c_int;
 716     pub fn sem_open(name: *const ::c_char, oflag: ::c_int, ...) -> *mut sem_t;
 717     pub fn sem_close(sem: *mut sem_t) -> ::c_int;
 718     pub fn sem_unlink(name: *const ::c_char) -> ::c_int;
 719     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 720                link_name = "sem_wait$UNIX2003")]
 721     pub fn sem_wait(sem: *mut sem_t) -> ::c_int;
 722     pub fn sem_trywait(sem: *mut sem_t) -> ::c_int;
 723     pub fn sem_post(sem: *mut sem_t) -> ::c_int;
 724     pub fn sem_init(sem: *mut sem_t,
 725                     pshared: ::c_int,
 726                     value: ::c_uint)
 727                     -> ::c_int;
 728 }
 729
 730 // TODO: get rid of this cfg(not(...))
 731 #[cfg(not(target_os = "android"))] // " if " -- appease style checker
 732 extern {
 733     #[cfg_attr(target_os = "macos", link_name = "glob$INODE64")]
 734     #[cfg_attr(target_os = "netbsd", link_name = "__glob30")]
 735     pub fn glob(pattern: *const c_char,
 736                 flags: ::c_int,
 737                 errfunc: Option<extern fn(epath: *const c_char,
 738                                           errno: ::c_int) -> ::c_int>,
 739                 pglob: *mut glob_t) -> ::c_int;
 740     #[cfg_attr(target_os = "netbsd", link_name = "__globfree30")]
 741     pub fn globfree(pglob: *mut glob_t);
 742
 743     pub fn posix_madvise(addr: *mut ::c_void, len: ::size_t, advice: ::c_int)
 744                          -> ::c_int;
 745
 746     pub fn shm_unlink(name: *const c_char) -> ::c_int;
 747
 748     #[cfg_attr(all(target_os = "macos", target_arch = "x86_64"),
 749                link_name = "seekdir$INODE64")]
 750     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 751                link_name = "seekdir$INODE64$UNIX2003")]
 752     pub fn seekdir(dirp: *mut ::DIR, loc: c_long);
 753
 754     #[cfg_attr(all(target_os = "macos", target_arch = "x86_64"),
 755                link_name = "telldir$INODE64")]
 756     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 757                link_name = "telldir$INODE64$UNIX2003")]
 758     pub fn telldir(dirp: *mut ::DIR) -> c_long;
 759
 760     pub fn getsid(pid: pid_t) -> pid_t;
 761     pub fn madvise(addr: *mut ::c_void, len: ::size_t, advice: ::c_int)
 762                    -> ::c_int;
 763     pub fn readlink(path: *const c_char,
 764                     buf: *mut c_char,
 765                     bufsz: ::size_t)
 766                     -> ::ssize_t;
 767
 768     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 769                link_name = "msync$UNIX2003")]
 770     #[cfg_attr(target_os = "netbsd", link_name = "__msync13")]
 771     pub fn msync(addr: *mut ::c_void, len: ::size_t, flags: ::c_int) -> ::c_int;
 772     pub fn sysconf(name: ::c_int) -> c_long;
 773     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 774                link_name = "recvfrom$UNIX2003")]
 775     pub fn recvfrom(socket: ::c_int, buf: *mut ::c_void, len: ::size_t,
 776                     flags: ::c_int, addr: *mut sockaddr,
 777                     addrlen: *mut socklen_t) -> ::ssize_t;
 778     pub fn mkfifo(path: *const c_char, mode: mode_t) -> ::c_int;
 779
 780     #[cfg_attr(target_os = "netbsd", link_name = "__sigemptyset14")]
 781     pub fn sigemptyset(set: *mut sigset_t) -> ::c_int;
 782     #[cfg_attr(target_os = "netbsd", link_name = "__sigaddset14")]
 783     pub fn sigaddset(set: *mut sigset_t, signum: ::c_int) -> ::c_int;
 784     #[cfg_attr(target_os = "netbsd", link_name = "__sigfillset14")]
 785     pub fn sigfillset(set: *mut sigset_t) -> ::c_int;
 786     #[cfg_attr(target_os = "netbsd", link_name = "__sigdelset14")]
 787     pub fn sigdelset(set: *mut sigset_t, signum: ::c_int) -> ::c_int;
 788     #[cfg_attr(target_os = "netbsd", link_name = "__sigismember14")]
 789     pub fn sigismember(set: *const sigset_t, signum: ::c_int) -> ::c_int;
 790     #[cfg_attr(all(target_os = "macos", target_arch = "x86_64"),
 791                link_name = "pselect$1050")]
 792     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 793                link_name = "pselect$UNIX2003")]
 794     #[cfg_attr(target_os = "netbsd", link_name = "__pselect50")]
 795     pub fn pselect(nfds: ::c_int,
 796                    readfs: *mut fd_set,
 797                    writefds: *mut fd_set,
 798                    errorfds: *mut fd_set,
 799                    timeout: *const timespec,
 800                    sigmask: *const sigset_t) -> ::c_int;
 801     pub fn fseeko(stream: *mut ::FILE,
 802                   offset: ::off_t,
 803                   whence: ::c_int) -> ::c_int;
 804     pub fn ftello(stream: *mut ::FILE) -> ::off_t;
 805     #[cfg_attr(target_os = "netbsd", link_name = "__timegm50")]
 806     pub fn timegm(tm: *mut ::tm) -> time_t;
 807     pub fn statvfs(path: *const c_char, buf: *mut statvfs) -> ::c_int;
 808     pub fn fstatvfs(fd: ::c_int, buf: *mut statvfs) -> ::c_int;
 809     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 810                link_name = "tcdrain$UNIX2003")]
 811     pub fn tcdrain(fd: ::c_int) -> ::c_int;
 812     pub fn cfgetispeed(termios: *const ::termios) -> ::speed_t;
 813     pub fn cfgetospeed(termios: *const ::termios) -> ::speed_t;
 814     pub fn cfsetispeed(termios: *mut ::termios, speed: ::speed_t) -> ::c_int;
 815     pub fn cfsetospeed(termios: *mut ::termios, speed: ::speed_t) -> ::c_int;
 816     pub fn tcgetattr(fd: ::c_int, termios: *mut ::termios) -> ::c_int;
 817     pub fn tcsetattr(fd: ::c_int,
 818                      optional_actions: ::c_int,
 819                      termios: *const ::termios) -> ::c_int;
 820     pub fn tcflow(fd: ::c_int, action: ::c_int) -> ::c_int;
 821     pub fn tcflush(fd: ::c_int, action: ::c_int) -> ::c_int;
 822     pub fn tcsendbreak(fd: ::c_int, duration: ::c_int) -> ::c_int;
 823     pub fn mkstemp(template: *mut ::c_char) -> ::c_int;
 824     pub fn mkstemps(template: *mut ::c_char, suffixlen: ::c_int) -> ::c_int;
 825     pub fn mkdtemp(template: *mut ::c_char) -> *mut ::c_char;
 826     pub fn futimes(fd: ::c_int, times: *const ::timeval) -> ::c_int;
 827     pub fn nl_langinfo(item: ::nl_item) -> *mut ::c_char;
 828
 829     pub fn openlog(ident: *const ::c_char, logopt: ::c_int, facility: ::c_int);
 830     pub fn closelog();
 831     pub fn setlogmask(maskpri: ::c_int) -> ::c_int;
 832     pub fn syslog(priority: ::c_int, message: *const ::c_char, ...);
 833     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
 834                link_name = "nice$UNIX2003")]
 835     pub fn nice(incr: ::c_int) -> ::c_int;
 836 }
 837
 838 cfg_if! {
 839     if #[cfg(any(target_os = "linux",
 840                  target_os = "android",
 841                  target_os = "emscripten"))] {
 842         mod notbsd;
 843         pub use self::notbsd::*;
 844     } else if #[cfg(any(target_os = "macos",
 845                         target_os = "ios",
 846                         target_os = "freebsd",
 847                         target_os = "dragonfly",
 848                         target_os = "openbsd",
 849                         target_os = "netbsd",
 850                         target_os = "bitrig"))] {
 851         mod bsd;
 852         pub use self::bsd::*;
 853     } else if #[cfg(target_os = "solaris")] {
 854         mod solaris;
 855         pub use self::solaris::*;
 856     } else if #[cfg(target_os = "haiku")] {
 857         mod haiku;
 858         pub use self::haiku::*;
 859     } else {
 860         // Unknown target_os
 861     }
 862 }