1 pub type sa_family_t = u16;
2 pub type speed_t = ::c_uint;
3 pub type tcflag_t = ::c_uint;
4 pub type clockid_t = ::c_int;
5 pub type timer_t = *mut ::c_void;
6 pub type key_t = ::c_int;
7 pub type id_t = ::c_uint;
8 
9 missing! {
10     #[cfg_attr(feature = "extra_traits", derive(Debug))]
11     pub enum timezone {}
12 }
13 
14 s! {
15     pub struct in_addr {
16         pub s_addr: ::in_addr_t,
17     }
18 
19     pub struct ip_mreq {
20         pub imr_multiaddr: in_addr,
21         pub imr_interface: in_addr,
22     }
23 
24     pub struct ip_mreqn {
25         pub imr_multiaddr: in_addr,
26         pub imr_address: in_addr,
27         pub imr_ifindex: ::c_int,
28     }
29 
30     pub struct ip_mreq_source {
31         pub imr_multiaddr: in_addr,
32         pub imr_interface: in_addr,
33         pub imr_sourceaddr: in_addr,
34     }
35 
36     pub struct sockaddr {
37         pub sa_family: sa_family_t,
38         pub sa_data: [::c_char; 14],
39     }
40 
41     pub struct sockaddr_in {
42         pub sin_family: sa_family_t,
43         pub sin_port: ::in_port_t,
44         pub sin_addr: ::in_addr,
45         pub sin_zero: [u8; 8],
46     }
47 
48     pub struct sockaddr_in6 {
49         pub sin6_family: sa_family_t,
50         pub sin6_port: ::in_port_t,
51         pub sin6_flowinfo: u32,
52         pub sin6_addr: ::in6_addr,
53         pub sin6_scope_id: u32,
54     }
55 
56     // The order of the `ai_addr` field in this struct is crucial
57     // for converting between the Rust and C types.
58     pub struct addrinfo {
59         pub ai_flags: ::c_int,
60         pub ai_family: ::c_int,
61         pub ai_socktype: ::c_int,
62         pub ai_protocol: ::c_int,
63         pub ai_addrlen: socklen_t,
64 
65         #[cfg(any(target_os = "linux", target_os = "emscripten"))]
66         pub ai_addr: *mut ::sockaddr,
67 
68         pub ai_canonname: *mut c_char,
69 
70         #[cfg(target_os = "android")]
71         pub ai_addr: *mut ::sockaddr,
72 
73         pub ai_next: *mut addrinfo,
74     }
75 
76     pub struct sockaddr_ll {
77         pub sll_family: ::c_ushort,
78         pub sll_protocol: ::c_ushort,
79         pub sll_ifindex: ::c_int,
80         pub sll_hatype: ::c_ushort,
81         pub sll_pkttype: ::c_uchar,
82         pub sll_halen: ::c_uchar,
83         pub sll_addr: [::c_uchar; 8],
84     }
85 
86     pub struct fd_set {
87         fds_bits: [::c_ulong; FD_SETSIZE as usize / ULONG_SIZE],
88     }
89 
90     pub struct tm {
91         pub tm_sec: ::c_int,
92         pub tm_min: ::c_int,
93         pub tm_hour: ::c_int,
94         pub tm_mday: ::c_int,
95         pub tm_mon: ::c_int,
96         pub tm_year: ::c_int,
97         pub tm_wday: ::c_int,
98         pub tm_yday: ::c_int,
99         pub tm_isdst: ::c_int,
100         pub tm_gmtoff: ::c_long,
101         pub tm_zone: *const ::c_char,
102     }
103 
104     pub struct sched_param {
105         pub sched_priority: ::c_int,
106         #[cfg(any(target_env = "musl", target_os = "emscripten", target_env = "ohos"))]
107         pub sched_ss_low_priority: ::c_int,
108         #[cfg(any(target_env = "musl", target_os = "emscripten", target_env = "ohos"))]
109         pub sched_ss_repl_period: ::timespec,
110         #[cfg(any(target_env = "musl", target_os = "emscripten", target_env = "ohos"))]
111         pub sched_ss_init_budget: ::timespec,
112         #[cfg(any(target_env = "musl", target_os = "emscripten", target_env = "ohos"))]
113         pub sched_ss_max_repl: ::c_int,
114     }
115 
116     pub struct Dl_info {
117         pub dli_fname: *const ::c_char,
118         pub dli_fbase: *mut ::c_void,
119         pub dli_sname: *const ::c_char,
120         pub dli_saddr: *mut ::c_void,
121     }
122 
123     pub struct lconv {
124         pub decimal_point: *mut ::c_char,
125         pub thousands_sep: *mut ::c_char,
126         pub grouping: *mut ::c_char,
127         pub int_curr_symbol: *mut ::c_char,
128         pub currency_symbol: *mut ::c_char,
129         pub mon_decimal_point: *mut ::c_char,
130         pub mon_thousands_sep: *mut ::c_char,
131         pub mon_grouping: *mut ::c_char,
132         pub positive_sign: *mut ::c_char,
133         pub negative_sign: *mut ::c_char,
134         pub int_frac_digits: ::c_char,
135         pub frac_digits: ::c_char,
136         pub p_cs_precedes: ::c_char,
137         pub p_sep_by_space: ::c_char,
138         pub n_cs_precedes: ::c_char,
139         pub n_sep_by_space: ::c_char,
140         pub p_sign_posn: ::c_char,
141         pub n_sign_posn: ::c_char,
142         pub int_p_cs_precedes: ::c_char,
143         pub int_p_sep_by_space: ::c_char,
144         pub int_n_cs_precedes: ::c_char,
145         pub int_n_sep_by_space: ::c_char,
146         pub int_p_sign_posn: ::c_char,
147         pub int_n_sign_posn: ::c_char,
148     }
149 
150     pub struct in_pktinfo {
151         pub ipi_ifindex: ::c_int,
152         pub ipi_spec_dst: ::in_addr,
153         pub ipi_addr: ::in_addr,
154     }
155 
156     pub struct ifaddrs {
157         pub ifa_next: *mut ifaddrs,
158         pub ifa_name: *mut c_char,
159         pub ifa_flags: ::c_uint,
160         pub ifa_addr: *mut ::sockaddr,
161         pub ifa_netmask: *mut ::sockaddr,
162         pub ifa_ifu: *mut ::sockaddr, // FIXME This should be a union
163         pub ifa_data: *mut ::c_void,
164     }
165 
166     pub struct in6_rtmsg {
167         rtmsg_dst: ::in6_addr,
168         rtmsg_src: ::in6_addr,
169         rtmsg_gateway: ::in6_addr,
170         rtmsg_type: u32,
171         rtmsg_dst_len: u16,
172         rtmsg_src_len: u16,
173         rtmsg_metric: u32,
174         rtmsg_info: ::c_ulong,
175         rtmsg_flags: u32,
176         rtmsg_ifindex: ::c_int,
177     }
178 
179     pub struct arpreq {
180         pub arp_pa: ::sockaddr,
181         pub arp_ha: ::sockaddr,
182         pub arp_flags: ::c_int,
183         pub arp_netmask: ::sockaddr,
184         pub arp_dev: [::c_char; 16],
185     }
186 
187     pub struct arpreq_old {
188         pub arp_pa: ::sockaddr,
189         pub arp_ha: ::sockaddr,
190         pub arp_flags: ::c_int,
191         pub arp_netmask: ::sockaddr,
192     }
193 
194     pub struct arphdr {
195         pub ar_hrd: u16,
196         pub ar_pro: u16,
197         pub ar_hln: u8,
198         pub ar_pln: u8,
199         pub ar_op: u16,
200     }
201 
202     pub struct mmsghdr {
203         pub msg_hdr: ::msghdr,
204         pub msg_len: ::c_uint,
205     }
206 }
207 
208 cfg_if! {
209     if #[cfg(any(target_env = "gnu", target_os = "android"))] {
210         s! {
211             pub struct statx {
212                 pub stx_mask: ::__u32,
213                 pub stx_blksize: ::__u32,
214                 pub stx_attributes: ::__u64,
215                 pub stx_nlink: ::__u32,
216                 pub stx_uid: ::__u32,
217                 pub stx_gid: ::__u32,
218                 pub stx_mode: ::__u16,
219                 __statx_pad1: [::__u16; 1],
220                 pub stx_ino: ::__u64,
221                 pub stx_size: ::__u64,
222                 pub stx_blocks: ::__u64,
223                 pub stx_attributes_mask: ::__u64,
224                 pub stx_atime: statx_timestamp,
225                 pub stx_btime: statx_timestamp,
226                 pub stx_ctime: statx_timestamp,
227                 pub stx_mtime: statx_timestamp,
228                 pub stx_rdev_major: ::__u32,
229                 pub stx_rdev_minor: ::__u32,
230                 pub stx_dev_major: ::__u32,
231                 pub stx_dev_minor: ::__u32,
232                 pub stx_mnt_id: ::__u64,
233                 pub stx_dio_mem_align: ::__u32,
234                 pub stx_dio_offset_align: ::__u32,
235                 __statx_pad3: [::__u64; 12],
236             }
237 
238             pub struct statx_timestamp {
239                 pub tv_sec: ::__s64,
240                 pub tv_nsec: ::__u32,
241                 __statx_timestamp_pad1: [::__s32; 1],
242             }
243         }
244     }
245 }
246 
247 s_no_extra_traits! {
248     #[cfg_attr(
249         any(
250             all(
251                 target_arch = "x86",
252                 not(target_env = "musl"),
253                 not(target_os = "android")
254             ),
255             target_arch = "x86_64"
256         ),
257         repr(packed)
258     )]
259     pub struct epoll_event {
260         pub events: u32,
261         pub u64: u64,
262     }
263 
264     pub struct sockaddr_un {
265         pub sun_family: sa_family_t,
266         pub sun_path: [::c_char; 108],
267     }
268 
269     pub struct sockaddr_storage {
270         pub ss_family: sa_family_t,
271         #[cfg(target_pointer_width = "32")]
272         __ss_pad2: [u8; 128 - 2 - 4],
273         #[cfg(target_pointer_width = "64")]
274         __ss_pad2: [u8; 128 - 2 - 8],
275         __ss_align: ::size_t,
276     }
277 
278     pub struct utsname {
279         pub sysname: [::c_char; 65],
280         pub nodename: [::c_char; 65],
281         pub release: [::c_char; 65],
282         pub version: [::c_char; 65],
283         pub machine: [::c_char; 65],
284         pub domainname: [::c_char; 65],
285     }
286 
287     pub struct sigevent {
288         pub sigev_value: ::sigval,
289         pub sigev_signo: ::c_int,
290         pub sigev_notify: ::c_int,
291         // Actually a union.  We only expose sigev_notify_thread_id because it's
292         // the most useful member
293         pub sigev_notify_thread_id: ::c_int,
294         #[cfg(target_pointer_width = "64")]
295         __unused1: [::c_int; 11],
296         #[cfg(target_pointer_width = "32")]
297         __unused1: [::c_int; 12],
298     }
299 }
300 
301 cfg_if! {
302     if #[cfg(feature = "extra_traits")] {
303         impl PartialEq for epoll_event {
304             fn eq(&self, other: &epoll_event) -> bool {
305                 self.events == other.events && self.u64 == other.u64
306             }
307         }
308         impl Eq for epoll_event {}
309         impl ::fmt::Debug for epoll_event {
310             fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
311                 let events = self.events;
312                 let u64 = self.u64;
313                 f.debug_struct("epoll_event")
314                     .field("events", &events)
315                     .field("u64", &u64)
316                     .finish()
317             }
318         }
319         impl ::hash::Hash for epoll_event {
320             fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
321                 let events = self.events;
322                 let u64 = self.u64;
323                 events.hash(state);
324                 u64.hash(state);
325             }
326         }
327 
328         impl PartialEq for sockaddr_un {
329             fn eq(&self, other: &sockaddr_un) -> bool {
330                 self.sun_family == other.sun_family
331                     && self
332                         .sun_path
333                         .iter()
334                         .zip(other.sun_path.iter())
335                         .all(|(a, b)| a == b)
336             }
337         }
338         impl Eq for sockaddr_un {}
339         impl ::fmt::Debug for sockaddr_un {
340             fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
341                 f.debug_struct("sockaddr_un")
342                     .field("sun_family", &self.sun_family)
343                     // FIXME: .field("sun_path", &self.sun_path)
344                     .finish()
345             }
346         }
347         impl ::hash::Hash for sockaddr_un {
348             fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
349                 self.sun_family.hash(state);
350                 self.sun_path.hash(state);
351             }
352         }
353 
354         impl PartialEq for sockaddr_storage {
355             fn eq(&self, other: &sockaddr_storage) -> bool {
356                 self.ss_family == other.ss_family
357                     && self
358                         .__ss_pad2
359                         .iter()
360                         .zip(other.__ss_pad2.iter())
361                         .all(|(a, b)| a == b)
362             }
363         }
364 
365         impl Eq for sockaddr_storage {}
366 
367         impl ::fmt::Debug for sockaddr_storage {
368             fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
369                 f.debug_struct("sockaddr_storage")
370                     .field("ss_family", &self.ss_family)
371                     .field("__ss_align", &self.__ss_align)
372                     // FIXME: .field("__ss_pad2", &self.__ss_pad2)
373                     .finish()
374             }
375         }
376 
377         impl ::hash::Hash for sockaddr_storage {
378             fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
379                 self.ss_family.hash(state);
380                 self.__ss_pad2.hash(state);
381             }
382         }
383 
384         impl PartialEq for utsname {
385             fn eq(&self, other: &utsname) -> bool {
386                 self.sysname
387                     .iter()
388                     .zip(other.sysname.iter())
389                     .all(|(a, b)| a == b)
390                     && self
391                         .nodename
392                         .iter()
393                         .zip(other.nodename.iter())
394                         .all(|(a, b)| a == b)
395                     && self
396                         .release
397                         .iter()
398                         .zip(other.release.iter())
399                         .all(|(a, b)| a == b)
400                     && self
401                         .version
402                         .iter()
403                         .zip(other.version.iter())
404                         .all(|(a, b)| a == b)
405                     && self
406                         .machine
407                         .iter()
408                         .zip(other.machine.iter())
409                         .all(|(a, b)| a == b)
410                     && self
411                         .domainname
412                         .iter()
413                         .zip(other.domainname.iter())
414                         .all(|(a, b)| a == b)
415             }
416         }
417 
418         impl Eq for utsname {}
419 
420         impl ::fmt::Debug for utsname {
421             fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
422                 f.debug_struct("utsname")
423                     // FIXME: .field("sysname", &self.sysname)
424                     // FIXME: .field("nodename", &self.nodename)
425                     // FIXME: .field("release", &self.release)
426                     // FIXME: .field("version", &self.version)
427                     // FIXME: .field("machine", &self.machine)
428                     // FIXME: .field("domainname", &self.domainname)
429                     .finish()
430             }
431         }
432 
433         impl ::hash::Hash for utsname {
434             fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
435                 self.sysname.hash(state);
436                 self.nodename.hash(state);
437                 self.release.hash(state);
438                 self.version.hash(state);
439                 self.machine.hash(state);
440                 self.domainname.hash(state);
441             }
442         }
443 
444         impl PartialEq for sigevent {
445             fn eq(&self, other: &sigevent) -> bool {
446                 self.sigev_value == other.sigev_value
447                     && self.sigev_signo == other.sigev_signo
448                     && self.sigev_notify == other.sigev_notify
449                     && self.sigev_notify_thread_id == other.sigev_notify_thread_id
450             }
451         }
452         impl Eq for sigevent {}
453         impl ::fmt::Debug for sigevent {
454             fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
455                 f.debug_struct("sigevent")
456                     .field("sigev_value", &self.sigev_value)
457                     .field("sigev_signo", &self.sigev_signo)
458                     .field("sigev_notify", &self.sigev_notify)
459                     .field("sigev_notify_thread_id", &self.sigev_notify_thread_id)
460                     .finish()
461             }
462         }
463         impl ::hash::Hash for sigevent {
464             fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
465                 self.sigev_value.hash(state);
466                 self.sigev_signo.hash(state);
467                 self.sigev_notify.hash(state);
468                 self.sigev_notify_thread_id.hash(state);
469             }
470         }
471     }
472 }
473 
474 // intentionally not public, only used for fd_set
475 cfg_if! {
476     if #[cfg(target_pointer_width = "32")] {
477         const ULONG_SIZE: usize = 32;
478     } else if #[cfg(target_pointer_width = "64")] {
479         const ULONG_SIZE: usize = 64;
480     } else {
481         // Unknown target_pointer_width
482     }
483 }
484 
485 pub const EXIT_FAILURE: ::c_int = 1;
486 pub const EXIT_SUCCESS: ::c_int = 0;
487 pub const RAND_MAX: ::c_int = 2147483647;
488 pub const EOF: ::c_int = -1;
489 pub const SEEK_SET: ::c_int = 0;
490 pub const SEEK_CUR: ::c_int = 1;
491 pub const SEEK_END: ::c_int = 2;
492 pub const _IOFBF: ::c_int = 0;
493 pub const _IONBF: ::c_int = 2;
494 pub const _IOLBF: ::c_int = 1;
495 
496 pub const F_DUPFD: ::c_int = 0;
497 pub const F_GETFD: ::c_int = 1;
498 pub const F_SETFD: ::c_int = 2;
499 pub const F_GETFL: ::c_int = 3;
500 pub const F_SETFL: ::c_int = 4;
501 
502 // Linux-specific fcntls
503 pub const F_SETLEASE: ::c_int = 1024;
504 pub const F_GETLEASE: ::c_int = 1025;
505 pub const F_NOTIFY: ::c_int = 1026;
506 pub const F_CANCELLK: ::c_int = 1029;
507 pub const F_DUPFD_CLOEXEC: ::c_int = 1030;
508 pub const F_SETPIPE_SZ: ::c_int = 1031;
509 pub const F_GETPIPE_SZ: ::c_int = 1032;
510 pub const F_ADD_SEALS: ::c_int = 1033;
511 pub const F_GET_SEALS: ::c_int = 1034;
512 
513 pub const F_SEAL_SEAL: ::c_int = 0x0001;
514 pub const F_SEAL_SHRINK: ::c_int = 0x0002;
515 pub const F_SEAL_GROW: ::c_int = 0x0004;
516 pub const F_SEAL_WRITE: ::c_int = 0x0008;
517 
518 // FIXME(#235): Include file sealing fcntls once we have a way to verify them.
519 
520 pub const SIGTRAP: ::c_int = 5;
521 
522 pub const PTHREAD_CREATE_JOINABLE: ::c_int = 0;
523 pub const PTHREAD_CREATE_DETACHED: ::c_int = 1;
524 
525 pub const CLOCK_REALTIME: ::clockid_t = 0;
526 pub const CLOCK_MONOTONIC: ::clockid_t = 1;
527 pub const CLOCK_PROCESS_CPUTIME_ID: ::clockid_t = 2;
528 pub const CLOCK_THREAD_CPUTIME_ID: ::clockid_t = 3;
529 pub const CLOCK_MONOTONIC_RAW: ::clockid_t = 4;
530 pub const CLOCK_REALTIME_COARSE: ::clockid_t = 5;
531 pub const CLOCK_MONOTONIC_COARSE: ::clockid_t = 6;
532 pub const CLOCK_BOOTTIME: ::clockid_t = 7;
533 pub const CLOCK_REALTIME_ALARM: ::clockid_t = 8;
534 pub const CLOCK_BOOTTIME_ALARM: ::clockid_t = 9;
535 pub const CLOCK_TAI: ::clockid_t = 11;
536 pub const TIMER_ABSTIME: ::c_int = 1;
537 
538 pub const RUSAGE_SELF: ::c_int = 0;
539 
540 pub const O_RDONLY: ::c_int = 0;
541 pub const O_WRONLY: ::c_int = 1;
542 pub const O_RDWR: ::c_int = 2;
543 
544 pub const SOCK_CLOEXEC: ::c_int = O_CLOEXEC;
545 
546 pub const S_IFIFO: ::mode_t = 0o1_0000;
547 pub const S_IFCHR: ::mode_t = 0o2_0000;
548 pub const S_IFBLK: ::mode_t = 0o6_0000;
549 pub const S_IFDIR: ::mode_t = 0o4_0000;
550 pub const S_IFREG: ::mode_t = 0o10_0000;
551 pub const S_IFLNK: ::mode_t = 0o12_0000;
552 pub const S_IFSOCK: ::mode_t = 0o14_0000;
553 pub const S_IFMT: ::mode_t = 0o17_0000;
554 pub const S_IRWXU: ::mode_t = 0o0700;
555 pub const S_IXUSR: ::mode_t = 0o0100;
556 pub const S_IWUSR: ::mode_t = 0o0200;
557 pub const S_IRUSR: ::mode_t = 0o0400;
558 pub const S_IRWXG: ::mode_t = 0o0070;
559 pub const S_IXGRP: ::mode_t = 0o0010;
560 pub const S_IWGRP: ::mode_t = 0o0020;
561 pub const S_IRGRP: ::mode_t = 0o0040;
562 pub const S_IRWXO: ::mode_t = 0o0007;
563 pub const S_IXOTH: ::mode_t = 0o0001;
564 pub const S_IWOTH: ::mode_t = 0o0002;
565 pub const S_IROTH: ::mode_t = 0o0004;
566 pub const F_OK: ::c_int = 0;
567 pub const R_OK: ::c_int = 4;
568 pub const W_OK: ::c_int = 2;
569 pub const X_OK: ::c_int = 1;
570 pub const STDIN_FILENO: ::c_int = 0;
571 pub const STDOUT_FILENO: ::c_int = 1;
572 pub const STDERR_FILENO: ::c_int = 2;
573 pub const SIGHUP: ::c_int = 1;
574 pub const SIGINT: ::c_int = 2;
575 pub const SIGQUIT: ::c_int = 3;
576 pub const SIGILL: ::c_int = 4;
577 pub const SIGABRT: ::c_int = 6;
578 pub const SIGFPE: ::c_int = 8;
579 pub const SIGKILL: ::c_int = 9;
580 pub const SIGSEGV: ::c_int = 11;
581 pub const SIGPIPE: ::c_int = 13;
582 pub const SIGALRM: ::c_int = 14;
583 pub const SIGTERM: ::c_int = 15;
584 
585 pub const PROT_NONE: ::c_int = 0;
586 pub const PROT_READ: ::c_int = 1;
587 pub const PROT_WRITE: ::c_int = 2;
588 pub const PROT_EXEC: ::c_int = 4;
589 
590 pub const XATTR_CREATE: ::c_int = 0x1;
591 pub const XATTR_REPLACE: ::c_int = 0x2;
592 
593 cfg_if! {
594     if #[cfg(target_os = "android")] {
595         pub const RLIM64_INFINITY: ::c_ulonglong = !0;
596     } else {
597         pub const RLIM64_INFINITY: ::rlim64_t = !0;
598     }
599 }
600 
601 cfg_if! {
602     if #[cfg(target_env = "ohos")] {
603         pub const LC_CTYPE: ::c_int = 0;
604         pub const LC_NUMERIC: ::c_int = 1;
605         pub const LC_TIME: ::c_int = 2;
606         pub const LC_COLLATE: ::c_int = 3;
607         pub const LC_MONETARY: ::c_int = 4;
608         pub const LC_MESSAGES: ::c_int = 5;
609         pub const LC_PAPER: ::c_int = 6;
610         pub const LC_NAME: ::c_int = 7;
611         pub const LC_ADDRESS: ::c_int = 8;
612         pub const LC_TELEPHONE: ::c_int = 9;
613         pub const LC_MEASUREMENT: ::c_int = 10;
614         pub const LC_IDENTIFICATION: ::c_int = 11;
615         pub const LC_ALL: ::c_int = 12;
616     } else if #[cfg(not(target_env = "uclibc"))] {
617         pub const LC_CTYPE: ::c_int = 0;
618         pub const LC_NUMERIC: ::c_int = 1;
619         pub const LC_TIME: ::c_int = 2;
620         pub const LC_COLLATE: ::c_int = 3;
621         pub const LC_MONETARY: ::c_int = 4;
622         pub const LC_MESSAGES: ::c_int = 5;
623         pub const LC_ALL: ::c_int = 6;
624     }
625 }
626 
627 pub const LC_CTYPE_MASK: ::c_int = 1 << LC_CTYPE;
628 pub const LC_NUMERIC_MASK: ::c_int = 1 << LC_NUMERIC;
629 pub const LC_TIME_MASK: ::c_int = 1 << LC_TIME;
630 pub const LC_COLLATE_MASK: ::c_int = 1 << LC_COLLATE;
631 pub const LC_MONETARY_MASK: ::c_int = 1 << LC_MONETARY;
632 pub const LC_MESSAGES_MASK: ::c_int = 1 << LC_MESSAGES;
633 // LC_ALL_MASK defined per platform
634 
635 pub const MAP_FILE: ::c_int = 0x0000;
636 pub const MAP_SHARED: ::c_int = 0x0001;
637 pub const MAP_PRIVATE: ::c_int = 0x0002;
638 pub const MAP_FIXED: ::c_int = 0x0010;
639 
640 pub const MAP_FAILED: *mut ::c_void = !0 as *mut ::c_void;
641 
642 // MS_ flags for msync(2)
643 pub const MS_ASYNC: ::c_int = 0x0001;
644 pub const MS_INVALIDATE: ::c_int = 0x0002;
645 pub const MS_SYNC: ::c_int = 0x0004;
646 
647 // MS_ flags for mount(2)
648 pub const MS_RDONLY: ::c_ulong = 0x01;
649 pub const MS_NOSUID: ::c_ulong = 0x02;
650 pub const MS_NODEV: ::c_ulong = 0x04;
651 pub const MS_NOEXEC: ::c_ulong = 0x08;
652 pub const MS_SYNCHRONOUS: ::c_ulong = 0x10;
653 pub const MS_REMOUNT: ::c_ulong = 0x20;
654 pub const MS_MANDLOCK: ::c_ulong = 0x40;
655 pub const MS_DIRSYNC: ::c_ulong = 0x80;
656 pub const MS_NOATIME: ::c_ulong = 0x0400;
657 pub const MS_NODIRATIME: ::c_ulong = 0x0800;
658 pub const MS_BIND: ::c_ulong = 0x1000;
659 pub const MS_MOVE: ::c_ulong = 0x2000;
660 pub const MS_REC: ::c_ulong = 0x4000;
661 pub const MS_SILENT: ::c_ulong = 0x8000;
662 pub const MS_POSIXACL: ::c_ulong = 0x010000;
663 pub const MS_UNBINDABLE: ::c_ulong = 0x020000;
664 pub const MS_PRIVATE: ::c_ulong = 0x040000;
665 pub const MS_SLAVE: ::c_ulong = 0x080000;
666 pub const MS_SHARED: ::c_ulong = 0x100000;
667 pub const MS_RELATIME: ::c_ulong = 0x200000;
668 pub const MS_KERNMOUNT: ::c_ulong = 0x400000;
669 pub const MS_I_VERSION: ::c_ulong = 0x800000;
670 pub const MS_STRICTATIME: ::c_ulong = 0x1000000;
671 pub const MS_LAZYTIME: ::c_ulong = 0x2000000;
672 pub const MS_ACTIVE: ::c_ulong = 0x40000000;
673 pub const MS_MGC_VAL: ::c_ulong = 0xc0ed0000;
674 pub const MS_MGC_MSK: ::c_ulong = 0xffff0000;
675 
676 pub const SCM_RIGHTS: ::c_int = 0x01;
677 pub const SCM_CREDENTIALS: ::c_int = 0x02;
678 
679 pub const PROT_GROWSDOWN: ::c_int = 0x1000000;
680 pub const PROT_GROWSUP: ::c_int = 0x2000000;
681 
682 pub const MAP_TYPE: ::c_int = 0x000f;
683 
684 pub const MADV_NORMAL: ::c_int = 0;
685 pub const MADV_RANDOM: ::c_int = 1;
686 pub const MADV_SEQUENTIAL: ::c_int = 2;
687 pub const MADV_WILLNEED: ::c_int = 3;
688 pub const MADV_DONTNEED: ::c_int = 4;
689 pub const MADV_FREE: ::c_int = 8;
690 pub const MADV_REMOVE: ::c_int = 9;
691 pub const MADV_DONTFORK: ::c_int = 10;
692 pub const MADV_DOFORK: ::c_int = 11;
693 pub const MADV_MERGEABLE: ::c_int = 12;
694 pub const MADV_UNMERGEABLE: ::c_int = 13;
695 pub const MADV_HUGEPAGE: ::c_int = 14;
696 pub const MADV_NOHUGEPAGE: ::c_int = 15;
697 pub const MADV_DONTDUMP: ::c_int = 16;
698 pub const MADV_DODUMP: ::c_int = 17;
699 pub const MADV_WIPEONFORK: ::c_int = 18;
700 pub const MADV_KEEPONFORK: ::c_int = 19;
701 pub const MADV_COLD: ::c_int = 20;
702 pub const MADV_PAGEOUT: ::c_int = 21;
703 pub const MADV_HWPOISON: ::c_int = 100;
704 cfg_if! {
705     if #[cfg(not(target_os = "emscripten"))] {
706         pub const MADV_POPULATE_READ: ::c_int = 22;
707         pub const MADV_POPULATE_WRITE: ::c_int = 23;
708         pub const MADV_DONTNEED_LOCKED: ::c_int = 24;
709     }
710 }
711 
712 pub const IFF_UP: ::c_int = 0x1;
713 pub const IFF_BROADCAST: ::c_int = 0x2;
714 pub const IFF_DEBUG: ::c_int = 0x4;
715 pub const IFF_LOOPBACK: ::c_int = 0x8;
716 pub const IFF_POINTOPOINT: ::c_int = 0x10;
717 pub const IFF_NOTRAILERS: ::c_int = 0x20;
718 pub const IFF_RUNNING: ::c_int = 0x40;
719 pub const IFF_NOARP: ::c_int = 0x80;
720 pub const IFF_PROMISC: ::c_int = 0x100;
721 pub const IFF_ALLMULTI: ::c_int = 0x200;
722 pub const IFF_MASTER: ::c_int = 0x400;
723 pub const IFF_SLAVE: ::c_int = 0x800;
724 pub const IFF_MULTICAST: ::c_int = 0x1000;
725 pub const IFF_PORTSEL: ::c_int = 0x2000;
726 pub const IFF_AUTOMEDIA: ::c_int = 0x4000;
727 pub const IFF_DYNAMIC: ::c_int = 0x8000;
728 
729 pub const SOL_IP: ::c_int = 0;
730 pub const SOL_TCP: ::c_int = 6;
731 pub const SOL_UDP: ::c_int = 17;
732 pub const SOL_IPV6: ::c_int = 41;
733 pub const SOL_ICMPV6: ::c_int = 58;
734 pub const SOL_RAW: ::c_int = 255;
735 pub const SOL_DECNET: ::c_int = 261;
736 pub const SOL_X25: ::c_int = 262;
737 pub const SOL_PACKET: ::c_int = 263;
738 pub const SOL_ATM: ::c_int = 264;
739 pub const SOL_AAL: ::c_int = 265;
740 pub const SOL_IRDA: ::c_int = 266;
741 pub const SOL_NETBEUI: ::c_int = 267;
742 pub const SOL_LLC: ::c_int = 268;
743 pub const SOL_DCCP: ::c_int = 269;
744 pub const SOL_NETLINK: ::c_int = 270;
745 pub const SOL_TIPC: ::c_int = 271;
746 pub const SOL_BLUETOOTH: ::c_int = 274;
747 pub const SOL_ALG: ::c_int = 279;
748 
749 pub const AF_UNSPEC: ::c_int = 0;
750 pub const AF_UNIX: ::c_int = 1;
751 pub const AF_LOCAL: ::c_int = 1;
752 pub const AF_INET: ::c_int = 2;
753 pub const AF_AX25: ::c_int = 3;
754 pub const AF_IPX: ::c_int = 4;
755 pub const AF_APPLETALK: ::c_int = 5;
756 pub const AF_NETROM: ::c_int = 6;
757 pub const AF_BRIDGE: ::c_int = 7;
758 pub const AF_ATMPVC: ::c_int = 8;
759 pub const AF_X25: ::c_int = 9;
760 pub const AF_INET6: ::c_int = 10;
761 pub const AF_ROSE: ::c_int = 11;
762 pub const AF_DECnet: ::c_int = 12;
763 pub const AF_NETBEUI: ::c_int = 13;
764 pub const AF_SECURITY: ::c_int = 14;
765 pub const AF_KEY: ::c_int = 15;
766 pub const AF_NETLINK: ::c_int = 16;
767 pub const AF_ROUTE: ::c_int = AF_NETLINK;
768 pub const AF_PACKET: ::c_int = 17;
769 pub const AF_ASH: ::c_int = 18;
770 pub const AF_ECONET: ::c_int = 19;
771 pub const AF_ATMSVC: ::c_int = 20;
772 pub const AF_RDS: ::c_int = 21;
773 pub const AF_SNA: ::c_int = 22;
774 pub const AF_IRDA: ::c_int = 23;
775 pub const AF_PPPOX: ::c_int = 24;
776 pub const AF_WANPIPE: ::c_int = 25;
777 pub const AF_LLC: ::c_int = 26;
778 pub const AF_CAN: ::c_int = 29;
779 pub const AF_TIPC: ::c_int = 30;
780 pub const AF_BLUETOOTH: ::c_int = 31;
781 pub const AF_IUCV: ::c_int = 32;
782 pub const AF_RXRPC: ::c_int = 33;
783 pub const AF_ISDN: ::c_int = 34;
784 pub const AF_PHONET: ::c_int = 35;
785 pub const AF_IEEE802154: ::c_int = 36;
786 pub const AF_CAIF: ::c_int = 37;
787 pub const AF_ALG: ::c_int = 38;
788 
789 pub const PF_UNSPEC: ::c_int = AF_UNSPEC;
790 pub const PF_UNIX: ::c_int = AF_UNIX;
791 pub const PF_LOCAL: ::c_int = AF_LOCAL;
792 pub const PF_INET: ::c_int = AF_INET;
793 pub const PF_AX25: ::c_int = AF_AX25;
794 pub const PF_IPX: ::c_int = AF_IPX;
795 pub const PF_APPLETALK: ::c_int = AF_APPLETALK;
796 pub const PF_NETROM: ::c_int = AF_NETROM;
797 pub const PF_BRIDGE: ::c_int = AF_BRIDGE;
798 pub const PF_ATMPVC: ::c_int = AF_ATMPVC;
799 pub const PF_X25: ::c_int = AF_X25;
800 pub const PF_INET6: ::c_int = AF_INET6;
801 pub const PF_ROSE: ::c_int = AF_ROSE;
802 pub const PF_DECnet: ::c_int = AF_DECnet;
803 pub const PF_NETBEUI: ::c_int = AF_NETBEUI;
804 pub const PF_SECURITY: ::c_int = AF_SECURITY;
805 pub const PF_KEY: ::c_int = AF_KEY;
806 pub const PF_NETLINK: ::c_int = AF_NETLINK;
807 pub const PF_ROUTE: ::c_int = AF_ROUTE;
808 pub const PF_PACKET: ::c_int = AF_PACKET;
809 pub const PF_ASH: ::c_int = AF_ASH;
810 pub const PF_ECONET: ::c_int = AF_ECONET;
811 pub const PF_ATMSVC: ::c_int = AF_ATMSVC;
812 pub const PF_RDS: ::c_int = AF_RDS;
813 pub const PF_SNA: ::c_int = AF_SNA;
814 pub const PF_IRDA: ::c_int = AF_IRDA;
815 pub const PF_PPPOX: ::c_int = AF_PPPOX;
816 pub const PF_WANPIPE: ::c_int = AF_WANPIPE;
817 pub const PF_LLC: ::c_int = AF_LLC;
818 pub const PF_CAN: ::c_int = AF_CAN;
819 pub const PF_TIPC: ::c_int = AF_TIPC;
820 pub const PF_BLUETOOTH: ::c_int = AF_BLUETOOTH;
821 pub const PF_IUCV: ::c_int = AF_IUCV;
822 pub const PF_RXRPC: ::c_int = AF_RXRPC;
823 pub const PF_ISDN: ::c_int = AF_ISDN;
824 pub const PF_PHONET: ::c_int = AF_PHONET;
825 pub const PF_IEEE802154: ::c_int = AF_IEEE802154;
826 pub const PF_CAIF: ::c_int = AF_CAIF;
827 pub const PF_ALG: ::c_int = AF_ALG;
828 
829 pub const MSG_OOB: ::c_int = 1;
830 pub const MSG_PEEK: ::c_int = 2;
831 pub const MSG_DONTROUTE: ::c_int = 4;
832 pub const MSG_CTRUNC: ::c_int = 8;
833 pub const MSG_TRUNC: ::c_int = 0x20;
834 pub const MSG_DONTWAIT: ::c_int = 0x40;
835 pub const MSG_EOR: ::c_int = 0x80;
836 pub const MSG_WAITALL: ::c_int = 0x100;
837 pub const MSG_FIN: ::c_int = 0x200;
838 pub const MSG_SYN: ::c_int = 0x400;
839 pub const MSG_CONFIRM: ::c_int = 0x800;
840 pub const MSG_RST: ::c_int = 0x1000;
841 pub const MSG_ERRQUEUE: ::c_int = 0x2000;
842 pub const MSG_NOSIGNAL: ::c_int = 0x4000;
843 pub const MSG_MORE: ::c_int = 0x8000;
844 pub const MSG_WAITFORONE: ::c_int = 0x10000;
845 pub const MSG_FASTOPEN: ::c_int = 0x20000000;
846 pub const MSG_CMSG_CLOEXEC: ::c_int = 0x40000000;
847 
848 pub const SCM_TIMESTAMP: ::c_int = SO_TIMESTAMP;
849 
850 pub const SOCK_RAW: ::c_int = 3;
851 pub const SOCK_RDM: ::c_int = 4;
852 pub const IP_TOS: ::c_int = 1;
853 pub const IP_TTL: ::c_int = 2;
854 pub const IP_HDRINCL: ::c_int = 3;
855 pub const IP_OPTIONS: ::c_int = 4;
856 pub const IP_ROUTER_ALERT: ::c_int = 5;
857 pub const IP_RECVOPTS: ::c_int = 6;
858 pub const IP_RETOPTS: ::c_int = 7;
859 pub const IP_PKTINFO: ::c_int = 8;
860 pub const IP_PKTOPTIONS: ::c_int = 9;
861 pub const IP_MTU_DISCOVER: ::c_int = 10;
862 pub const IP_RECVERR: ::c_int = 11;
863 pub const IP_RECVTTL: ::c_int = 12;
864 pub const IP_RECVTOS: ::c_int = 13;
865 pub const IP_MTU: ::c_int = 14;
866 pub const IP_FREEBIND: ::c_int = 15;
867 pub const IP_IPSEC_POLICY: ::c_int = 16;
868 pub const IP_XFRM_POLICY: ::c_int = 17;
869 pub const IP_PASSSEC: ::c_int = 18;
870 pub const IP_TRANSPARENT: ::c_int = 19;
871 pub const IP_ORIGDSTADDR: ::c_int = 20;
872 pub const IP_RECVORIGDSTADDR: ::c_int = IP_ORIGDSTADDR;
873 pub const IP_MINTTL: ::c_int = 21;
874 pub const IP_NODEFRAG: ::c_int = 22;
875 pub const IP_CHECKSUM: ::c_int = 23;
876 pub const IP_BIND_ADDRESS_NO_PORT: ::c_int = 24;
877 pub const IP_MULTICAST_IF: ::c_int = 32;
878 pub const IP_MULTICAST_TTL: ::c_int = 33;
879 pub const IP_MULTICAST_LOOP: ::c_int = 34;
880 pub const IP_ADD_MEMBERSHIP: ::c_int = 35;
881 pub const IP_DROP_MEMBERSHIP: ::c_int = 36;
882 pub const IP_UNBLOCK_SOURCE: ::c_int = 37;
883 pub const IP_BLOCK_SOURCE: ::c_int = 38;
884 pub const IP_ADD_SOURCE_MEMBERSHIP: ::c_int = 39;
885 pub const IP_DROP_SOURCE_MEMBERSHIP: ::c_int = 40;
886 pub const IP_MSFILTER: ::c_int = 41;
887 pub const IP_MULTICAST_ALL: ::c_int = 49;
888 pub const IP_UNICAST_IF: ::c_int = 50;
889 
890 pub const IP_DEFAULT_MULTICAST_TTL: ::c_int = 1;
891 pub const IP_DEFAULT_MULTICAST_LOOP: ::c_int = 1;
892 
893 pub const IP_PMTUDISC_DONT: ::c_int = 0;
894 pub const IP_PMTUDISC_WANT: ::c_int = 1;
895 pub const IP_PMTUDISC_DO: ::c_int = 2;
896 pub const IP_PMTUDISC_PROBE: ::c_int = 3;
897 pub const IP_PMTUDISC_INTERFACE: ::c_int = 4;
898 pub const IP_PMTUDISC_OMIT: ::c_int = 5;
899 
900 // IPPROTO_IP defined in src/unix/mod.rs
901 /// Hop-by-hop option header
902 pub const IPPROTO_HOPOPTS: ::c_int = 0;
903 // IPPROTO_ICMP defined in src/unix/mod.rs
904 /// group mgmt protocol
905 pub const IPPROTO_IGMP: ::c_int = 2;
906 /// for compatibility
907 pub const IPPROTO_IPIP: ::c_int = 4;
908 // IPPROTO_TCP defined in src/unix/mod.rs
909 /// exterior gateway protocol
910 pub const IPPROTO_EGP: ::c_int = 8;
911 /// pup
912 pub const IPPROTO_PUP: ::c_int = 12;
913 // IPPROTO_UDP defined in src/unix/mod.rs
914 /// xns idp
915 pub const IPPROTO_IDP: ::c_int = 22;
916 /// tp-4 w/ class negotiation
917 pub const IPPROTO_TP: ::c_int = 29;
918 /// DCCP
919 pub const IPPROTO_DCCP: ::c_int = 33;
920 // IPPROTO_IPV6 defined in src/unix/mod.rs
921 /// IP6 routing header
922 pub const IPPROTO_ROUTING: ::c_int = 43;
923 /// IP6 fragmentation header
924 pub const IPPROTO_FRAGMENT: ::c_int = 44;
925 /// resource reservation
926 pub const IPPROTO_RSVP: ::c_int = 46;
927 /// General Routing Encap.
928 pub const IPPROTO_GRE: ::c_int = 47;
929 /// IP6 Encap Sec. Payload
930 pub const IPPROTO_ESP: ::c_int = 50;
931 /// IP6 Auth Header
932 pub const IPPROTO_AH: ::c_int = 51;
933 // IPPROTO_ICMPV6 defined in src/unix/mod.rs
934 /// IP6 no next header
935 pub const IPPROTO_NONE: ::c_int = 59;
936 /// IP6 destination option
937 pub const IPPROTO_DSTOPTS: ::c_int = 60;
938 pub const IPPROTO_MTP: ::c_int = 92;
939 /// encapsulation header
940 pub const IPPROTO_ENCAP: ::c_int = 98;
941 /// Protocol indep. multicast
942 pub const IPPROTO_PIM: ::c_int = 103;
943 /// IP Payload Comp. Protocol
944 pub const IPPROTO_COMP: ::c_int = 108;
945 /// SCTP
946 pub const IPPROTO_SCTP: ::c_int = 132;
947 pub const IPPROTO_MH: ::c_int = 135;
948 pub const IPPROTO_UDPLITE: ::c_int = 136;
949 /// raw IP packet
950 pub const IPPROTO_RAW: ::c_int = 255;
951 pub const IPPROTO_BEETPH: ::c_int = 94;
952 pub const IPPROTO_MPLS: ::c_int = 137;
953 /// Multipath TCP
954 pub const IPPROTO_MPTCP: ::c_int = 262;
955 /// Ethernet-within-IPv6 encapsulation.
956 pub const IPPROTO_ETHERNET: ::c_int = 143;
957 
958 pub const MCAST_EXCLUDE: ::c_int = 0;
959 pub const MCAST_INCLUDE: ::c_int = 1;
960 pub const MCAST_JOIN_GROUP: ::c_int = 42;
961 pub const MCAST_BLOCK_SOURCE: ::c_int = 43;
962 pub const MCAST_UNBLOCK_SOURCE: ::c_int = 44;
963 pub const MCAST_LEAVE_GROUP: ::c_int = 45;
964 pub const MCAST_JOIN_SOURCE_GROUP: ::c_int = 46;
965 pub const MCAST_LEAVE_SOURCE_GROUP: ::c_int = 47;
966 pub const MCAST_MSFILTER: ::c_int = 48;
967 
968 pub const IPV6_ADDRFORM: ::c_int = 1;
969 pub const IPV6_2292PKTINFO: ::c_int = 2;
970 pub const IPV6_2292HOPOPTS: ::c_int = 3;
971 pub const IPV6_2292DSTOPTS: ::c_int = 4;
972 pub const IPV6_2292RTHDR: ::c_int = 5;
973 pub const IPV6_2292PKTOPTIONS: ::c_int = 6;
974 pub const IPV6_CHECKSUM: ::c_int = 7;
975 pub const IPV6_2292HOPLIMIT: ::c_int = 8;
976 pub const IPV6_NEXTHOP: ::c_int = 9;
977 pub const IPV6_AUTHHDR: ::c_int = 10;
978 pub const IPV6_UNICAST_HOPS: ::c_int = 16;
979 pub const IPV6_MULTICAST_IF: ::c_int = 17;
980 pub const IPV6_MULTICAST_HOPS: ::c_int = 18;
981 pub const IPV6_MULTICAST_LOOP: ::c_int = 19;
982 pub const IPV6_ADD_MEMBERSHIP: ::c_int = 20;
983 pub const IPV6_DROP_MEMBERSHIP: ::c_int = 21;
984 pub const IPV6_ROUTER_ALERT: ::c_int = 22;
985 pub const IPV6_MTU_DISCOVER: ::c_int = 23;
986 pub const IPV6_MTU: ::c_int = 24;
987 pub const IPV6_RECVERR: ::c_int = 25;
988 pub const IPV6_V6ONLY: ::c_int = 26;
989 pub const IPV6_JOIN_ANYCAST: ::c_int = 27;
990 pub const IPV6_LEAVE_ANYCAST: ::c_int = 28;
991 pub const IPV6_IPSEC_POLICY: ::c_int = 34;
992 pub const IPV6_XFRM_POLICY: ::c_int = 35;
993 pub const IPV6_HDRINCL: ::c_int = 36;
994 pub const IPV6_RECVPKTINFO: ::c_int = 49;
995 pub const IPV6_PKTINFO: ::c_int = 50;
996 pub const IPV6_RECVHOPLIMIT: ::c_int = 51;
997 pub const IPV6_HOPLIMIT: ::c_int = 52;
998 pub const IPV6_RECVHOPOPTS: ::c_int = 53;
999 pub const IPV6_HOPOPTS: ::c_int = 54;
1000 pub const IPV6_RTHDRDSTOPTS: ::c_int = 55;
1001 pub const IPV6_RECVRTHDR: ::c_int = 56;
1002 pub const IPV6_RTHDR: ::c_int = 57;
1003 pub const IPV6_RECVDSTOPTS: ::c_int = 58;
1004 pub const IPV6_DSTOPTS: ::c_int = 59;
1005 pub const IPV6_RECVPATHMTU: ::c_int = 60;
1006 pub const IPV6_PATHMTU: ::c_int = 61;
1007 pub const IPV6_DONTFRAG: ::c_int = 62;
1008 pub const IPV6_RECVTCLASS: ::c_int = 66;
1009 pub const IPV6_TCLASS: ::c_int = 67;
1010 pub const IPV6_AUTOFLOWLABEL: ::c_int = 70;
1011 pub const IPV6_ADDR_PREFERENCES: ::c_int = 72;
1012 pub const IPV6_MINHOPCOUNT: ::c_int = 73;
1013 pub const IPV6_ORIGDSTADDR: ::c_int = 74;
1014 pub const IPV6_RECVORIGDSTADDR: ::c_int = IPV6_ORIGDSTADDR;
1015 pub const IPV6_TRANSPARENT: ::c_int = 75;
1016 pub const IPV6_UNICAST_IF: ::c_int = 76;
1017 pub const IPV6_PREFER_SRC_TMP: ::c_int = 0x0001;
1018 pub const IPV6_PREFER_SRC_PUBLIC: ::c_int = 0x0002;
1019 pub const IPV6_PREFER_SRC_PUBTMP_DEFAULT: ::c_int = 0x0100;
1020 pub const IPV6_PREFER_SRC_COA: ::c_int = 0x0004;
1021 pub const IPV6_PREFER_SRC_HOME: ::c_int = 0x0400;
1022 pub const IPV6_PREFER_SRC_CGA: ::c_int = 0x0008;
1023 pub const IPV6_PREFER_SRC_NONCGA: ::c_int = 0x0800;
1024 
1025 pub const IPV6_PMTUDISC_DONT: ::c_int = 0;
1026 pub const IPV6_PMTUDISC_WANT: ::c_int = 1;
1027 pub const IPV6_PMTUDISC_DO: ::c_int = 2;
1028 pub const IPV6_PMTUDISC_PROBE: ::c_int = 3;
1029 pub const IPV6_PMTUDISC_INTERFACE: ::c_int = 4;
1030 pub const IPV6_PMTUDISC_OMIT: ::c_int = 5;
1031 
1032 pub const TCP_NODELAY: ::c_int = 1;
1033 pub const TCP_MAXSEG: ::c_int = 2;
1034 pub const TCP_CORK: ::c_int = 3;
1035 pub const TCP_KEEPIDLE: ::c_int = 4;
1036 pub const TCP_KEEPINTVL: ::c_int = 5;
1037 pub const TCP_KEEPCNT: ::c_int = 6;
1038 pub const TCP_SYNCNT: ::c_int = 7;
1039 pub const TCP_LINGER2: ::c_int = 8;
1040 pub const TCP_DEFER_ACCEPT: ::c_int = 9;
1041 pub const TCP_WINDOW_CLAMP: ::c_int = 10;
1042 pub const TCP_INFO: ::c_int = 11;
1043 pub const TCP_QUICKACK: ::c_int = 12;
1044 pub const TCP_CONGESTION: ::c_int = 13;
1045 pub const TCP_MD5SIG: ::c_int = 14;
1046 cfg_if! {
1047     if #[cfg(all(
1048         target_os = "linux",
1049         any(target_env = "gnu", target_env = "musl", target_env = "ohos")
1050     ))] {
1051         // WARN: deprecated
1052         pub const TCP_COOKIE_TRANSACTIONS: ::c_int = 15;
1053     }
1054 }
1055 pub const TCP_THIN_LINEAR_TIMEOUTS: ::c_int = 16;
1056 pub const TCP_THIN_DUPACK: ::c_int = 17;
1057 pub const TCP_USER_TIMEOUT: ::c_int = 18;
1058 pub const TCP_REPAIR: ::c_int = 19;
1059 pub const TCP_REPAIR_QUEUE: ::c_int = 20;
1060 pub const TCP_QUEUE_SEQ: ::c_int = 21;
1061 pub const TCP_REPAIR_OPTIONS: ::c_int = 22;
1062 pub const TCP_FASTOPEN: ::c_int = 23;
1063 pub const TCP_TIMESTAMP: ::c_int = 24;
1064 pub const TCP_NOTSENT_LOWAT: ::c_int = 25;
1065 pub const TCP_CC_INFO: ::c_int = 26;
1066 pub const TCP_SAVE_SYN: ::c_int = 27;
1067 pub const TCP_SAVED_SYN: ::c_int = 28;
1068 cfg_if! {
1069     if #[cfg(not(target_os = "emscripten"))] {
1070         // NOTE: emscripten doesn't support these options yet.
1071 
1072         pub const TCP_REPAIR_WINDOW: ::c_int = 29;
1073         pub const TCP_FASTOPEN_CONNECT: ::c_int = 30;
1074         pub const TCP_ULP: ::c_int = 31;
1075         pub const TCP_MD5SIG_EXT: ::c_int = 32;
1076         pub const TCP_FASTOPEN_KEY: ::c_int = 33;
1077         pub const TCP_FASTOPEN_NO_COOKIE: ::c_int = 34;
1078         pub const TCP_ZEROCOPY_RECEIVE: ::c_int = 35;
1079         pub const TCP_INQ: ::c_int = 36;
1080         pub const TCP_CM_INQ: ::c_int = TCP_INQ;
1081         // NOTE: Some CI images doesn't have this option yet.
1082         // pub const TCP_TX_DELAY: ::c_int = 37;
1083         pub const TCP_MD5SIG_MAXKEYLEN: usize = 80;
1084     }
1085 }
1086 
1087 pub const SO_DEBUG: ::c_int = 1;
1088 
1089 pub const SHUT_RD: ::c_int = 0;
1090 pub const SHUT_WR: ::c_int = 1;
1091 pub const SHUT_RDWR: ::c_int = 2;
1092 
1093 pub const LOCK_SH: ::c_int = 1;
1094 pub const LOCK_EX: ::c_int = 2;
1095 pub const LOCK_NB: ::c_int = 4;
1096 pub const LOCK_UN: ::c_int = 8;
1097 
1098 pub const SS_ONSTACK: ::c_int = 1;
1099 pub const SS_DISABLE: ::c_int = 2;
1100 
1101 pub const PATH_MAX: ::c_int = 4096;
1102 
1103 pub const UIO_MAXIOV: ::c_int = 1024;
1104 
1105 pub const FD_SETSIZE: usize = 1024;
1106 
1107 pub const EPOLLIN: ::c_int = 0x1;
1108 pub const EPOLLPRI: ::c_int = 0x2;
1109 pub const EPOLLOUT: ::c_int = 0x4;
1110 pub const EPOLLERR: ::c_int = 0x8;
1111 pub const EPOLLHUP: ::c_int = 0x10;
1112 pub const EPOLLRDNORM: ::c_int = 0x40;
1113 pub const EPOLLRDBAND: ::c_int = 0x80;
1114 pub const EPOLLWRNORM: ::c_int = 0x100;
1115 pub const EPOLLWRBAND: ::c_int = 0x200;
1116 pub const EPOLLMSG: ::c_int = 0x400;
1117 pub const EPOLLRDHUP: ::c_int = 0x2000;
1118 pub const EPOLLEXCLUSIVE: ::c_int = 0x10000000;
1119 pub const EPOLLWAKEUP: ::c_int = 0x20000000;
1120 pub const EPOLLONESHOT: ::c_int = 0x40000000;
1121 pub const EPOLLET: ::c_int = 0x80000000;
1122 
1123 pub const EPOLL_CTL_ADD: ::c_int = 1;
1124 pub const EPOLL_CTL_MOD: ::c_int = 3;
1125 pub const EPOLL_CTL_DEL: ::c_int = 2;
1126 
1127 pub const MNT_FORCE: ::c_int = 0x1;
1128 pub const MNT_DETACH: ::c_int = 0x2;
1129 pub const MNT_EXPIRE: ::c_int = 0x4;
1130 pub const UMOUNT_NOFOLLOW: ::c_int = 0x8;
1131 
1132 pub const Q_GETFMT: ::c_int = 0x800004;
1133 pub const Q_GETINFO: ::c_int = 0x800005;
1134 pub const Q_SETINFO: ::c_int = 0x800006;
1135 pub const QIF_BLIMITS: u32 = 1;
1136 pub const QIF_SPACE: u32 = 2;
1137 pub const QIF_ILIMITS: u32 = 4;
1138 pub const QIF_INODES: u32 = 8;
1139 pub const QIF_BTIME: u32 = 16;
1140 pub const QIF_ITIME: u32 = 32;
1141 pub const QIF_LIMITS: u32 = 5;
1142 pub const QIF_USAGE: u32 = 10;
1143 pub const QIF_TIMES: u32 = 48;
1144 pub const QIF_ALL: u32 = 63;
1145 
1146 pub const Q_SYNC: ::c_int = 0x800001;
1147 pub const Q_QUOTAON: ::c_int = 0x800002;
1148 pub const Q_QUOTAOFF: ::c_int = 0x800003;
1149 pub const Q_GETQUOTA: ::c_int = 0x800007;
1150 pub const Q_SETQUOTA: ::c_int = 0x800008;
1151 
1152 pub const TCIOFF: ::c_int = 2;
1153 pub const TCION: ::c_int = 3;
1154 pub const TCOOFF: ::c_int = 0;
1155 pub const TCOON: ::c_int = 1;
1156 pub const TCIFLUSH: ::c_int = 0;
1157 pub const TCOFLUSH: ::c_int = 1;
1158 pub const TCIOFLUSH: ::c_int = 2;
1159 pub const NL0: ::tcflag_t = 0x00000000;
1160 pub const NL1: ::tcflag_t = 0x00000100;
1161 pub const TAB0: ::tcflag_t = 0x00000000;
1162 pub const CR0: ::tcflag_t = 0x00000000;
1163 pub const FF0: ::tcflag_t = 0x00000000;
1164 pub const BS0: ::tcflag_t = 0x00000000;
1165 pub const VT0: ::tcflag_t = 0x00000000;
1166 pub const VERASE: usize = 2;
1167 pub const VKILL: usize = 3;
1168 pub const VINTR: usize = 0;
1169 pub const VQUIT: usize = 1;
1170 pub const VLNEXT: usize = 15;
1171 pub const IGNBRK: ::tcflag_t = 0x00000001;
1172 pub const BRKINT: ::tcflag_t = 0x00000002;
1173 pub const IGNPAR: ::tcflag_t = 0x00000004;
1174 pub const PARMRK: ::tcflag_t = 0x00000008;
1175 pub const INPCK: ::tcflag_t = 0x00000010;
1176 pub const ISTRIP: ::tcflag_t = 0x00000020;
1177 pub const INLCR: ::tcflag_t = 0x00000040;
1178 pub const IGNCR: ::tcflag_t = 0x00000080;
1179 pub const ICRNL: ::tcflag_t = 0x00000100;
1180 pub const IXANY: ::tcflag_t = 0x00000800;
1181 pub const IMAXBEL: ::tcflag_t = 0x00002000;
1182 pub const OPOST: ::tcflag_t = 0x1;
1183 pub const CS5: ::tcflag_t = 0x00000000;
1184 pub const CRTSCTS: ::tcflag_t = 0x80000000;
1185 pub const ECHO: ::tcflag_t = 0x00000008;
1186 pub const OCRNL: ::tcflag_t = 0o000010;
1187 pub const ONOCR: ::tcflag_t = 0o000020;
1188 pub const ONLRET: ::tcflag_t = 0o000040;
1189 pub const OFILL: ::tcflag_t = 0o000100;
1190 pub const OFDEL: ::tcflag_t = 0o000200;
1191 
1192 pub const CLONE_VM: ::c_int = 0x100;
1193 pub const CLONE_FS: ::c_int = 0x200;
1194 pub const CLONE_FILES: ::c_int = 0x400;
1195 pub const CLONE_SIGHAND: ::c_int = 0x800;
1196 pub const CLONE_PTRACE: ::c_int = 0x2000;
1197 pub const CLONE_VFORK: ::c_int = 0x4000;
1198 pub const CLONE_PARENT: ::c_int = 0x8000;
1199 pub const CLONE_THREAD: ::c_int = 0x10000;
1200 pub const CLONE_NEWNS: ::c_int = 0x20000;
1201 pub const CLONE_SYSVSEM: ::c_int = 0x40000;
1202 pub const CLONE_SETTLS: ::c_int = 0x80000;
1203 pub const CLONE_PARENT_SETTID: ::c_int = 0x100000;
1204 pub const CLONE_CHILD_CLEARTID: ::c_int = 0x200000;
1205 pub const CLONE_DETACHED: ::c_int = 0x400000;
1206 pub const CLONE_UNTRACED: ::c_int = 0x800000;
1207 pub const CLONE_CHILD_SETTID: ::c_int = 0x01000000;
1208 pub const CLONE_NEWCGROUP: ::c_int = 0x02000000;
1209 pub const CLONE_NEWUTS: ::c_int = 0x04000000;
1210 pub const CLONE_NEWIPC: ::c_int = 0x08000000;
1211 pub const CLONE_NEWUSER: ::c_int = 0x10000000;
1212 pub const CLONE_NEWPID: ::c_int = 0x20000000;
1213 pub const CLONE_NEWNET: ::c_int = 0x40000000;
1214 pub const CLONE_IO: ::c_int = 0x80000000;
1215 
1216 pub const WNOHANG: ::c_int = 0x00000001;
1217 pub const WUNTRACED: ::c_int = 0x00000002;
1218 pub const WSTOPPED: ::c_int = WUNTRACED;
1219 pub const WEXITED: ::c_int = 0x00000004;
1220 pub const WCONTINUED: ::c_int = 0x00000008;
1221 pub const WNOWAIT: ::c_int = 0x01000000;
1222 
1223 // Options for personality(2).
1224 pub const ADDR_NO_RANDOMIZE: ::c_int = 0x0040000;
1225 pub const MMAP_PAGE_ZERO: ::c_int = 0x0100000;
1226 pub const ADDR_COMPAT_LAYOUT: ::c_int = 0x0200000;
1227 pub const READ_IMPLIES_EXEC: ::c_int = 0x0400000;
1228 pub const ADDR_LIMIT_32BIT: ::c_int = 0x0800000;
1229 pub const SHORT_INODE: ::c_int = 0x1000000;
1230 pub const WHOLE_SECONDS: ::c_int = 0x2000000;
1231 pub const STICKY_TIMEOUTS: ::c_int = 0x4000000;
1232 pub const ADDR_LIMIT_3GB: ::c_int = 0x8000000;
1233 
1234 // Options set using PTRACE_SETOPTIONS.
1235 pub const PTRACE_O_TRACESYSGOOD: ::c_int = 0x00000001;
1236 pub const PTRACE_O_TRACEFORK: ::c_int = 0x00000002;
1237 pub const PTRACE_O_TRACEVFORK: ::c_int = 0x00000004;
1238 pub const PTRACE_O_TRACECLONE: ::c_int = 0x00000008;
1239 pub const PTRACE_O_TRACEEXEC: ::c_int = 0x00000010;
1240 pub const PTRACE_O_TRACEVFORKDONE: ::c_int = 0x00000020;
1241 pub const PTRACE_O_TRACEEXIT: ::c_int = 0x00000040;
1242 pub const PTRACE_O_TRACESECCOMP: ::c_int = 0x00000080;
1243 pub const PTRACE_O_SUSPEND_SECCOMP: ::c_int = 0x00200000;
1244 pub const PTRACE_O_EXITKILL: ::c_int = 0x00100000;
1245 pub const PTRACE_O_MASK: ::c_int = 0x003000ff;
1246 
1247 // Wait extended result codes for the above trace options.
1248 pub const PTRACE_EVENT_FORK: ::c_int = 1;
1249 pub const PTRACE_EVENT_VFORK: ::c_int = 2;
1250 pub const PTRACE_EVENT_CLONE: ::c_int = 3;
1251 pub const PTRACE_EVENT_EXEC: ::c_int = 4;
1252 pub const PTRACE_EVENT_VFORK_DONE: ::c_int = 5;
1253 pub const PTRACE_EVENT_EXIT: ::c_int = 6;
1254 pub const PTRACE_EVENT_SECCOMP: ::c_int = 7;
1255 
1256 pub const __WNOTHREAD: ::c_int = 0x20000000;
1257 pub const __WALL: ::c_int = 0x40000000;
1258 pub const __WCLONE: ::c_int = 0x80000000;
1259 
1260 pub const SPLICE_F_MOVE: ::c_uint = 0x01;
1261 pub const SPLICE_F_NONBLOCK: ::c_uint = 0x02;
1262 pub const SPLICE_F_MORE: ::c_uint = 0x04;
1263 pub const SPLICE_F_GIFT: ::c_uint = 0x08;
1264 
1265 pub const RTLD_LOCAL: ::c_int = 0;
1266 pub const RTLD_LAZY: ::c_int = 1;
1267 
1268 pub const POSIX_FADV_NORMAL: ::c_int = 0;
1269 pub const POSIX_FADV_RANDOM: ::c_int = 1;
1270 pub const POSIX_FADV_SEQUENTIAL: ::c_int = 2;
1271 pub const POSIX_FADV_WILLNEED: ::c_int = 3;
1272 
1273 pub const AT_FDCWD: ::c_int = -100;
1274 pub const AT_SYMLINK_NOFOLLOW: ::c_int = 0x100;
1275 pub const AT_REMOVEDIR: ::c_int = 0x200;
1276 pub const AT_SYMLINK_FOLLOW: ::c_int = 0x400;
1277 pub const AT_NO_AUTOMOUNT: ::c_int = 0x800;
1278 pub const AT_EMPTY_PATH: ::c_int = 0x1000;
1279 pub const AT_RECURSIVE: ::c_int = 0x8000;
1280 
1281 pub const LOG_CRON: ::c_int = 9 << 3;
1282 pub const LOG_AUTHPRIV: ::c_int = 10 << 3;
1283 pub const LOG_FTP: ::c_int = 11 << 3;
1284 pub const LOG_PERROR: ::c_int = 0x20;
1285 
1286 pub const PIPE_BUF: usize = 4096;
1287 
1288 pub const SI_LOAD_SHIFT: ::c_uint = 16;
1289 
1290 // si_code values for SIGBUS signal
1291 pub const BUS_ADRALN: ::c_int = 1;
1292 pub const BUS_ADRERR: ::c_int = 2;
1293 pub const BUS_OBJERR: ::c_int = 3;
1294 // Linux-specific si_code values for SIGBUS signal
1295 pub const BUS_MCEERR_AR: ::c_int = 4;
1296 pub const BUS_MCEERR_AO: ::c_int = 5;
1297 
1298 // si_code values for SIGCHLD signal
1299 pub const CLD_EXITED: ::c_int = 1;
1300 pub const CLD_KILLED: ::c_int = 2;
1301 pub const CLD_DUMPED: ::c_int = 3;
1302 pub const CLD_TRAPPED: ::c_int = 4;
1303 pub const CLD_STOPPED: ::c_int = 5;
1304 pub const CLD_CONTINUED: ::c_int = 6;
1305 
1306 pub const SIGEV_SIGNAL: ::c_int = 0;
1307 pub const SIGEV_NONE: ::c_int = 1;
1308 pub const SIGEV_THREAD: ::c_int = 2;
1309 
1310 pub const P_ALL: idtype_t = 0;
1311 pub const P_PID: idtype_t = 1;
1312 pub const P_PGID: idtype_t = 2;
1313 cfg_if! {
1314     if #[cfg(not(target_os = "emscripten"))] {
1315         pub const P_PIDFD: idtype_t = 3;
1316     }
1317 }
1318 
1319 pub const UTIME_OMIT: c_long = 1073741822;
1320 pub const UTIME_NOW: c_long = 1073741823;
1321 
1322 pub const POLLIN: ::c_short = 0x1;
1323 pub const POLLPRI: ::c_short = 0x2;
1324 pub const POLLOUT: ::c_short = 0x4;
1325 pub const POLLERR: ::c_short = 0x8;
1326 pub const POLLHUP: ::c_short = 0x10;
1327 pub const POLLNVAL: ::c_short = 0x20;
1328 pub const POLLRDNORM: ::c_short = 0x040;
1329 pub const POLLRDBAND: ::c_short = 0x080;
1330 #[cfg(not(any(target_arch = "sparc", target_arch = "sparc64")))]
1331 pub const POLLRDHUP: ::c_short = 0x2000;
1332 #[cfg(any(target_arch = "sparc", target_arch = "sparc64"))]
1333 pub const POLLRDHUP: ::c_short = 0x800;
1334 
1335 pub const IPTOS_LOWDELAY: u8 = 0x10;
1336 pub const IPTOS_THROUGHPUT: u8 = 0x08;
1337 pub const IPTOS_RELIABILITY: u8 = 0x04;
1338 pub const IPTOS_MINCOST: u8 = 0x02;
1339 
1340 pub const IPTOS_PREC_NETCONTROL: u8 = 0xe0;
1341 pub const IPTOS_PREC_INTERNETCONTROL: u8 = 0xc0;
1342 pub const IPTOS_PREC_CRITIC_ECP: u8 = 0xa0;
1343 pub const IPTOS_PREC_FLASHOVERRIDE: u8 = 0x80;
1344 pub const IPTOS_PREC_FLASH: u8 = 0x60;
1345 pub const IPTOS_PREC_IMMEDIATE: u8 = 0x40;
1346 pub const IPTOS_PREC_PRIORITY: u8 = 0x20;
1347 pub const IPTOS_PREC_ROUTINE: u8 = 0x00;
1348 
1349 pub const IPTOS_ECN_MASK: u8 = 0x03;
1350 pub const IPTOS_ECN_ECT1: u8 = 0x01;
1351 pub const IPTOS_ECN_ECT0: u8 = 0x02;
1352 pub const IPTOS_ECN_CE: u8 = 0x03;
1353 
1354 pub const IPOPT_COPY: u8 = 0x80;
1355 pub const IPOPT_CLASS_MASK: u8 = 0x60;
1356 pub const IPOPT_NUMBER_MASK: u8 = 0x1f;
1357 
1358 pub const IPOPT_CONTROL: u8 = 0x00;
1359 pub const IPOPT_RESERVED1: u8 = 0x20;
1360 pub const IPOPT_MEASUREMENT: u8 = 0x40;
1361 pub const IPOPT_RESERVED2: u8 = 0x60;
1362 pub const IPOPT_END: u8 = 0 | IPOPT_CONTROL;
1363 pub const IPOPT_NOOP: u8 = 1 | IPOPT_CONTROL;
1364 pub const IPOPT_SEC: u8 = 2 | IPOPT_CONTROL | IPOPT_COPY;
1365 pub const IPOPT_LSRR: u8 = 3 | IPOPT_CONTROL | IPOPT_COPY;
1366 pub const IPOPT_TIMESTAMP: u8 = 4 | IPOPT_MEASUREMENT;
1367 pub const IPOPT_RR: u8 = 7 | IPOPT_CONTROL;
1368 pub const IPOPT_SID: u8 = 8 | IPOPT_CONTROL | IPOPT_COPY;
1369 pub const IPOPT_SSRR: u8 = 9 | IPOPT_CONTROL | IPOPT_COPY;
1370 pub const IPOPT_RA: u8 = 20 | IPOPT_CONTROL | IPOPT_COPY;
1371 pub const IPVERSION: u8 = 4;
1372 pub const MAXTTL: u8 = 255;
1373 pub const IPDEFTTL: u8 = 64;
1374 pub const IPOPT_OPTVAL: u8 = 0;
1375 pub const IPOPT_OLEN: u8 = 1;
1376 pub const IPOPT_OFFSET: u8 = 2;
1377 pub const IPOPT_MINOFF: u8 = 4;
1378 pub const MAX_IPOPTLEN: u8 = 40;
1379 pub const IPOPT_NOP: u8 = IPOPT_NOOP;
1380 pub const IPOPT_EOL: u8 = IPOPT_END;
1381 pub const IPOPT_TS: u8 = IPOPT_TIMESTAMP;
1382 pub const IPOPT_TS_TSONLY: u8 = 0;
1383 pub const IPOPT_TS_TSANDADDR: u8 = 1;
1384 pub const IPOPT_TS_PRESPEC: u8 = 3;
1385 
1386 pub const ARPOP_RREQUEST: u16 = 3;
1387 pub const ARPOP_RREPLY: u16 = 4;
1388 pub const ARPOP_InREQUEST: u16 = 8;
1389 pub const ARPOP_InREPLY: u16 = 9;
1390 pub const ARPOP_NAK: u16 = 10;
1391 
1392 pub const ATF_NETMASK: ::c_int = 0x20;
1393 pub const ATF_DONTPUB: ::c_int = 0x40;
1394 
1395 pub const ARPHRD_NETROM: u16 = 0;
1396 pub const ARPHRD_ETHER: u16 = 1;
1397 pub const ARPHRD_EETHER: u16 = 2;
1398 pub const ARPHRD_AX25: u16 = 3;
1399 pub const ARPHRD_PRONET: u16 = 4;
1400 pub const ARPHRD_CHAOS: u16 = 5;
1401 pub const ARPHRD_IEEE802: u16 = 6;
1402 pub const ARPHRD_ARCNET: u16 = 7;
1403 pub const ARPHRD_APPLETLK: u16 = 8;
1404 pub const ARPHRD_DLCI: u16 = 15;
1405 pub const ARPHRD_ATM: u16 = 19;
1406 pub const ARPHRD_METRICOM: u16 = 23;
1407 pub const ARPHRD_IEEE1394: u16 = 24;
1408 pub const ARPHRD_EUI64: u16 = 27;
1409 pub const ARPHRD_INFINIBAND: u16 = 32;
1410 
1411 pub const ARPHRD_SLIP: u16 = 256;
1412 pub const ARPHRD_CSLIP: u16 = 257;
1413 pub const ARPHRD_SLIP6: u16 = 258;
1414 pub const ARPHRD_CSLIP6: u16 = 259;
1415 pub const ARPHRD_RSRVD: u16 = 260;
1416 pub const ARPHRD_ADAPT: u16 = 264;
1417 pub const ARPHRD_ROSE: u16 = 270;
1418 pub const ARPHRD_X25: u16 = 271;
1419 pub const ARPHRD_HWX25: u16 = 272;
1420 pub const ARPHRD_CAN: u16 = 280;
1421 pub const ARPHRD_PPP: u16 = 512;
1422 pub const ARPHRD_CISCO: u16 = 513;
1423 pub const ARPHRD_HDLC: u16 = ARPHRD_CISCO;
1424 pub const ARPHRD_LAPB: u16 = 516;
1425 pub const ARPHRD_DDCMP: u16 = 517;
1426 pub const ARPHRD_RAWHDLC: u16 = 518;
1427 
1428 pub const ARPHRD_TUNNEL: u16 = 768;
1429 pub const ARPHRD_TUNNEL6: u16 = 769;
1430 pub const ARPHRD_FRAD: u16 = 770;
1431 pub const ARPHRD_SKIP: u16 = 771;
1432 pub const ARPHRD_LOOPBACK: u16 = 772;
1433 pub const ARPHRD_LOCALTLK: u16 = 773;
1434 pub const ARPHRD_FDDI: u16 = 774;
1435 pub const ARPHRD_BIF: u16 = 775;
1436 pub const ARPHRD_SIT: u16 = 776;
1437 pub const ARPHRD_IPDDP: u16 = 777;
1438 pub const ARPHRD_IPGRE: u16 = 778;
1439 pub const ARPHRD_PIMREG: u16 = 779;
1440 pub const ARPHRD_HIPPI: u16 = 780;
1441 pub const ARPHRD_ASH: u16 = 781;
1442 pub const ARPHRD_ECONET: u16 = 782;
1443 pub const ARPHRD_IRDA: u16 = 783;
1444 pub const ARPHRD_FCPP: u16 = 784;
1445 pub const ARPHRD_FCAL: u16 = 785;
1446 pub const ARPHRD_FCPL: u16 = 786;
1447 pub const ARPHRD_FCFABRIC: u16 = 787;
1448 pub const ARPHRD_IEEE802_TR: u16 = 800;
1449 pub const ARPHRD_IEEE80211: u16 = 801;
1450 pub const ARPHRD_IEEE80211_PRISM: u16 = 802;
1451 pub const ARPHRD_IEEE80211_RADIOTAP: u16 = 803;
1452 pub const ARPHRD_IEEE802154: u16 = 804;
1453 
1454 pub const ARPHRD_VOID: u16 = 0xFFFF;
1455 pub const ARPHRD_NONE: u16 = 0xFFFE;
1456 
1457 cfg_if! {
1458     if #[cfg(target_os = "emscripten")] {
1459         // Emscripten does not define any `*_SUPER_MAGIC` constants.
1460     } else if #[cfg(not(target_arch = "s390x"))] {
1461         pub const ADFS_SUPER_MAGIC: ::c_long = 0x0000adf5;
1462         pub const AFFS_SUPER_MAGIC: ::c_long = 0x0000adff;
1463         pub const AFS_SUPER_MAGIC: ::c_long = 0x5346414f;
1464         pub const AUTOFS_SUPER_MAGIC: ::c_long = 0x0187;
1465         pub const BPF_FS_MAGIC: ::c_long = 0xcafe4a11;
1466         pub const BTRFS_SUPER_MAGIC: ::c_long = 0x9123683e;
1467         pub const CGROUP2_SUPER_MAGIC: ::c_long = 0x63677270;
1468         pub const CGROUP_SUPER_MAGIC: ::c_long = 0x27e0eb;
1469         pub const CODA_SUPER_MAGIC: ::c_long = 0x73757245;
1470         pub const CRAMFS_MAGIC: ::c_long = 0x28cd3d45;
1471         pub const DEBUGFS_MAGIC: ::c_long = 0x64626720;
1472         pub const DEVPTS_SUPER_MAGIC: ::c_long = 0x1cd1;
1473         pub const ECRYPTFS_SUPER_MAGIC: ::c_long = 0xf15f;
1474         pub const EFS_SUPER_MAGIC: ::c_long = 0x00414a53;
1475         pub const EXT2_SUPER_MAGIC: ::c_long = 0x0000ef53;
1476         pub const EXT3_SUPER_MAGIC: ::c_long = 0x0000ef53;
1477         pub const EXT4_SUPER_MAGIC: ::c_long = 0x0000ef53;
1478         pub const F2FS_SUPER_MAGIC: ::c_long = 0xf2f52010;
1479         pub const FUSE_SUPER_MAGIC: ::c_long = 0x65735546;
1480         pub const FUTEXFS_SUPER_MAGIC: ::c_long = 0xbad1dea;
1481         pub const HOSTFS_SUPER_MAGIC: ::c_long = 0x00c0ffee;
1482         pub const HPFS_SUPER_MAGIC: ::c_long = 0xf995e849;
1483         pub const HUGETLBFS_MAGIC: ::c_long = 0x958458f6;
1484         pub const ISOFS_SUPER_MAGIC: ::c_long = 0x00009660;
1485         pub const JFFS2_SUPER_MAGIC: ::c_long = 0x000072b6;
1486         pub const MINIX2_SUPER_MAGIC2: ::c_long = 0x00002478;
1487         pub const MINIX2_SUPER_MAGIC: ::c_long = 0x00002468;
1488         pub const MINIX3_SUPER_MAGIC: ::c_long = 0x4d5a;
1489         pub const MINIX_SUPER_MAGIC2: ::c_long = 0x0000138f;
1490         pub const MINIX_SUPER_MAGIC: ::c_long = 0x0000137f;
1491         pub const MSDOS_SUPER_MAGIC: ::c_long = 0x00004d44;
1492         pub const NCP_SUPER_MAGIC: ::c_long = 0x0000564c;
1493         pub const NFS_SUPER_MAGIC: ::c_long = 0x00006969;
1494         pub const NILFS_SUPER_MAGIC: ::c_long = 0x3434;
1495         pub const OCFS2_SUPER_MAGIC: ::c_long = 0x7461636f;
1496         pub const OPENPROM_SUPER_MAGIC: ::c_long = 0x00009fa1;
1497         pub const OVERLAYFS_SUPER_MAGIC: ::c_long = 0x794c7630;
1498         pub const PROC_SUPER_MAGIC: ::c_long = 0x00009fa0;
1499         pub const QNX4_SUPER_MAGIC: ::c_long = 0x0000002f;
1500         pub const QNX6_SUPER_MAGIC: ::c_long = 0x68191122;
1501         pub const RDTGROUP_SUPER_MAGIC: ::c_long = 0x7655821;
1502         pub const REISERFS_SUPER_MAGIC: ::c_long = 0x52654973;
1503         pub const SECURITYFS_MAGIC: ::c_long = 0x73636673;
1504         pub const SELINUX_MAGIC: ::c_long = 0xf97cff8c;
1505         pub const SMACK_MAGIC: ::c_long = 0x43415d53;
1506         pub const SMB_SUPER_MAGIC: ::c_long = 0x0000517b;
1507         pub const SYSFS_MAGIC: ::c_long = 0x62656572;
1508         pub const TMPFS_MAGIC: ::c_long = 0x01021994;
1509         pub const TRACEFS_MAGIC: ::c_long = 0x74726163;
1510         pub const UDF_SUPER_MAGIC: ::c_long = 0x15013346;
1511         pub const USBDEVICE_SUPER_MAGIC: ::c_long = 0x00009fa2;
1512         pub const XENFS_SUPER_MAGIC: ::c_long = 0xabba1974;
1513         pub const NSFS_MAGIC: ::c_long = 0x6e736673;
1514     } else if #[cfg(target_arch = "s390x")] {
1515         pub const ADFS_SUPER_MAGIC: ::c_uint = 0x0000adf5;
1516         pub const AFFS_SUPER_MAGIC: ::c_uint = 0x0000adff;
1517         pub const AFS_SUPER_MAGIC: ::c_uint = 0x5346414f;
1518         pub const AUTOFS_SUPER_MAGIC: ::c_uint = 0x0187;
1519         pub const BPF_FS_MAGIC: ::c_uint = 0xcafe4a11;
1520         pub const BTRFS_SUPER_MAGIC: ::c_uint = 0x9123683e;
1521         pub const CGROUP2_SUPER_MAGIC: ::c_uint = 0x63677270;
1522         pub const CGROUP_SUPER_MAGIC: ::c_uint = 0x27e0eb;
1523         pub const CODA_SUPER_MAGIC: ::c_uint = 0x73757245;
1524         pub const CRAMFS_MAGIC: ::c_uint = 0x28cd3d45;
1525         pub const DEBUGFS_MAGIC: ::c_uint = 0x64626720;
1526         pub const DEVPTS_SUPER_MAGIC: ::c_uint = 0x1cd1;
1527         pub const ECRYPTFS_SUPER_MAGIC: ::c_uint = 0xf15f;
1528         pub const EFS_SUPER_MAGIC: ::c_uint = 0x00414a53;
1529         pub const EXT2_SUPER_MAGIC: ::c_uint = 0x0000ef53;
1530         pub const EXT3_SUPER_MAGIC: ::c_uint = 0x0000ef53;
1531         pub const EXT4_SUPER_MAGIC: ::c_uint = 0x0000ef53;
1532         pub const F2FS_SUPER_MAGIC: ::c_uint = 0xf2f52010;
1533         pub const FUSE_SUPER_MAGIC: ::c_uint = 0x65735546;
1534         pub const FUTEXFS_SUPER_MAGIC: ::c_uint = 0xbad1dea;
1535         pub const HOSTFS_SUPER_MAGIC: ::c_uint = 0x00c0ffee;
1536         pub const HPFS_SUPER_MAGIC: ::c_uint = 0xf995e849;
1537         pub const HUGETLBFS_MAGIC: ::c_uint = 0x958458f6;
1538         pub const ISOFS_SUPER_MAGIC: ::c_uint = 0x00009660;
1539         pub const JFFS2_SUPER_MAGIC: ::c_uint = 0x000072b6;
1540         pub const MINIX2_SUPER_MAGIC2: ::c_uint = 0x00002478;
1541         pub const MINIX2_SUPER_MAGIC: ::c_uint = 0x00002468;
1542         pub const MINIX3_SUPER_MAGIC: ::c_uint = 0x4d5a;
1543         pub const MINIX_SUPER_MAGIC2: ::c_uint = 0x0000138f;
1544         pub const MINIX_SUPER_MAGIC: ::c_uint = 0x0000137f;
1545         pub const MSDOS_SUPER_MAGIC: ::c_uint = 0x00004d44;
1546         pub const NCP_SUPER_MAGIC: ::c_uint = 0x0000564c;
1547         pub const NFS_SUPER_MAGIC: ::c_uint = 0x00006969;
1548         pub const NILFS_SUPER_MAGIC: ::c_uint = 0x3434;
1549         pub const OCFS2_SUPER_MAGIC: ::c_uint = 0x7461636f;
1550         pub const OPENPROM_SUPER_MAGIC: ::c_uint = 0x00009fa1;
1551         pub const OVERLAYFS_SUPER_MAGIC: ::c_uint = 0x794c7630;
1552         pub const PROC_SUPER_MAGIC: ::c_uint = 0x00009fa0;
1553         pub const QNX4_SUPER_MAGIC: ::c_uint = 0x0000002f;
1554         pub const QNX6_SUPER_MAGIC: ::c_uint = 0x68191122;
1555         pub const RDTGROUP_SUPER_MAGIC: ::c_uint = 0x7655821;
1556         pub const REISERFS_SUPER_MAGIC: ::c_uint = 0x52654973;
1557         pub const SECURITYFS_MAGIC: ::c_uint = 0x73636673;
1558         pub const SELINUX_MAGIC: ::c_uint = 0xf97cff8c;
1559         pub const SMACK_MAGIC: ::c_uint = 0x43415d53;
1560         pub const SMB_SUPER_MAGIC: ::c_uint = 0x0000517b;
1561         pub const SYSFS_MAGIC: ::c_uint = 0x62656572;
1562         pub const TMPFS_MAGIC: ::c_uint = 0x01021994;
1563         pub const TRACEFS_MAGIC: ::c_uint = 0x74726163;
1564         pub const UDF_SUPER_MAGIC: ::c_uint = 0x15013346;
1565         pub const USBDEVICE_SUPER_MAGIC: ::c_uint = 0x00009fa2;
1566         pub const XENFS_SUPER_MAGIC: ::c_uint = 0xabba1974;
1567         pub const NSFS_MAGIC: ::c_uint = 0x6e736673;
1568     }
1569 }
1570 
1571 cfg_if! {
1572     if #[cfg(any(target_env = "gnu", target_os = "android"))] {
1573         pub const AT_STATX_SYNC_TYPE: ::c_int = 0x6000;
1574         pub const AT_STATX_SYNC_AS_STAT: ::c_int = 0x0000;
1575         pub const AT_STATX_FORCE_SYNC: ::c_int = 0x2000;
1576         pub const AT_STATX_DONT_SYNC: ::c_int = 0x4000;
1577         pub const STATX_TYPE: ::c_uint = 0x0001;
1578         pub const STATX_MODE: ::c_uint = 0x0002;
1579         pub const STATX_NLINK: ::c_uint = 0x0004;
1580         pub const STATX_UID: ::c_uint = 0x0008;
1581         pub const STATX_GID: ::c_uint = 0x0010;
1582         pub const STATX_ATIME: ::c_uint = 0x0020;
1583         pub const STATX_MTIME: ::c_uint = 0x0040;
1584         pub const STATX_CTIME: ::c_uint = 0x0080;
1585         pub const STATX_INO: ::c_uint = 0x0100;
1586         pub const STATX_SIZE: ::c_uint = 0x0200;
1587         pub const STATX_BLOCKS: ::c_uint = 0x0400;
1588         pub const STATX_BASIC_STATS: ::c_uint = 0x07ff;
1589         pub const STATX_BTIME: ::c_uint = 0x0800;
1590         pub const STATX_ALL: ::c_uint = 0x0fff;
1591         pub const STATX_MNT_ID: ::c_uint = 0x1000;
1592         pub const STATX_DIOALIGN: ::c_uint = 0x2000;
1593         pub const STATX__RESERVED: ::c_int = 0x80000000;
1594         pub const STATX_ATTR_COMPRESSED: ::c_int = 0x0004;
1595         pub const STATX_ATTR_IMMUTABLE: ::c_int = 0x0010;
1596         pub const STATX_ATTR_APPEND: ::c_int = 0x0020;
1597         pub const STATX_ATTR_NODUMP: ::c_int = 0x0040;
1598         pub const STATX_ATTR_ENCRYPTED: ::c_int = 0x0800;
1599         pub const STATX_ATTR_AUTOMOUNT: ::c_int = 0x1000;
1600         pub const STATX_ATTR_MOUNT_ROOT: ::c_int = 0x2000;
1601         pub const STATX_ATTR_VERITY: ::c_int = 0x100000;
1602         pub const STATX_ATTR_DAX: ::c_int = 0x200000;
1603     }
1604 }
1605 
1606 const_fn! {
1607     {const} fn CMSG_ALIGN(len: usize) -> usize {
1608         len + ::mem::size_of::<usize>() - 1 & !(::mem::size_of::<usize>() - 1)
1609     }
1610 }
1611 
1612 f! {
1613     pub fn CMSG_FIRSTHDR(mhdr: *const msghdr) -> *mut cmsghdr {
1614         if (*mhdr).msg_controllen as usize >= ::mem::size_of::<cmsghdr>() {
1615             (*mhdr).msg_control as *mut cmsghdr
1616         } else {
1617             0 as *mut cmsghdr
1618         }
1619     }
1620 
1621     pub fn CMSG_DATA(cmsg: *const cmsghdr) -> *mut ::c_uchar {
1622         cmsg.offset(1) as *mut ::c_uchar
1623     }
1624 
1625     pub {const} fn CMSG_SPACE(length: ::c_uint) -> ::c_uint {
1626         (CMSG_ALIGN(length as usize) + CMSG_ALIGN(::mem::size_of::<cmsghdr>())) as ::c_uint
1627     }
1628 
1629     pub {const} fn CMSG_LEN(length: ::c_uint) -> ::c_uint {
1630         CMSG_ALIGN(::mem::size_of::<cmsghdr>()) as ::c_uint + length
1631     }
1632 
1633     pub fn FD_CLR(fd: ::c_int, set: *mut fd_set) -> () {
1634         let fd = fd as usize;
1635         let size = ::mem::size_of_val(&(*set).fds_bits[0]) * 8;
1636         (*set).fds_bits[fd / size] &= !(1 << (fd % size));
1637         return;
1638     }
1639 
1640     pub fn FD_ISSET(fd: ::c_int, set: *const fd_set) -> bool {
1641         let fd = fd as usize;
1642         let size = ::mem::size_of_val(&(*set).fds_bits[0]) * 8;
1643         return ((*set).fds_bits[fd / size] & (1 << (fd % size))) != 0;
1644     }
1645 
1646     pub fn FD_SET(fd: ::c_int, set: *mut fd_set) -> () {
1647         let fd = fd as usize;
1648         let size = ::mem::size_of_val(&(*set).fds_bits[0]) * 8;
1649         (*set).fds_bits[fd / size] |= 1 << (fd % size);
1650         return;
1651     }
1652 
1653     pub fn FD_ZERO(set: *mut fd_set) -> () {
1654         for slot in (*set).fds_bits.iter_mut() {
1655             *slot = 0;
1656         }
1657     }
1658 }
1659 
1660 safe_f! {
1661     pub fn SIGRTMAX() -> ::c_int {
1662         unsafe { __libc_current_sigrtmax() }
1663     }
1664 
1665     pub fn SIGRTMIN() -> ::c_int {
1666         unsafe { __libc_current_sigrtmin() }
1667     }
1668 
1669     pub {const} fn WIFSTOPPED(status: ::c_int) -> bool {
1670         (status & 0xff) == 0x7f
1671     }
1672 
1673     pub {const} fn WSTOPSIG(status: ::c_int) -> ::c_int {
1674         (status >> 8) & 0xff
1675     }
1676 
1677     pub {const} fn WIFCONTINUED(status: ::c_int) -> bool {
1678         status == 0xffff
1679     }
1680 
1681     pub {const} fn WIFSIGNALED(status: ::c_int) -> bool {
1682         ((status & 0x7f) + 1) as i8 >= 2
1683     }
1684 
1685     pub {const} fn WTERMSIG(status: ::c_int) -> ::c_int {
1686         status & 0x7f
1687     }
1688 
1689     pub {const} fn WIFEXITED(status: ::c_int) -> bool {
1690         (status & 0x7f) == 0
1691     }
1692 
1693     pub {const} fn WEXITSTATUS(status: ::c_int) -> ::c_int {
1694         (status >> 8) & 0xff
1695     }
1696 
1697     pub {const} fn WCOREDUMP(status: ::c_int) -> bool {
1698         (status & 0x80) != 0
1699     }
1700 
1701     pub {const} fn W_EXITCODE(ret: ::c_int, sig: ::c_int) -> ::c_int {
1702         (ret << 8) | sig
1703     }
1704 
1705     pub {const} fn W_STOPCODE(sig: ::c_int) -> ::c_int {
1706         (sig << 8) | 0x7f
1707     }
1708 
1709     pub {const} fn QCMD(cmd: ::c_int, type_: ::c_int) -> ::c_int {
1710         (cmd << 8) | (type_ & 0x00ff)
1711     }
1712 
1713     pub {const} fn IPOPT_COPIED(o: u8) -> u8 {
1714         o & IPOPT_COPY
1715     }
1716 
1717     pub {const} fn IPOPT_CLASS(o: u8) -> u8 {
1718         o & IPOPT_CLASS_MASK
1719     }
1720 
1721     pub {const} fn IPOPT_NUMBER(o: u8) -> u8 {
1722         o & IPOPT_NUMBER_MASK
1723     }
1724 
1725     pub {const} fn IPTOS_ECN(x: u8) -> u8 {
1726         x & ::IPTOS_ECN_MASK
1727     }
1728 
1729     #[allow(ellipsis_inclusive_range_patterns)]
1730     pub {const} fn KERNEL_VERSION(a: u32, b: u32, c: u32) -> u32 {
1731         ((a << 16) + (b << 8))
1732             + match c {
1733                 0...255 => c,
1734                 _ => 255,
1735             }
1736     }
1737 }
1738 
1739 extern "C" {
1740     #[doc(hidden)]
1741     pub fn __libc_current_sigrtmax() -> ::c_int;
1742     #[doc(hidden)]
1743     pub fn __libc_current_sigrtmin() -> ::c_int;
1744 
1745     pub fn sem_destroy(sem: *mut sem_t) -> ::c_int;
1746     pub fn sem_init(sem: *mut sem_t, pshared: ::c_int, value: ::c_uint) -> ::c_int;
1747     pub fn fdatasync(fd: ::c_int) -> ::c_int;
1748     pub fn mincore(addr: *mut ::c_void, len: ::size_t, vec: *mut ::c_uchar) -> ::c_int;
1749 
1750     pub fn clock_getres(clk_id: ::clockid_t, tp: *mut ::timespec) -> ::c_int;
1751     pub fn clock_gettime(clk_id: ::clockid_t, tp: *mut ::timespec) -> ::c_int;
1752     pub fn clock_settime(clk_id: ::clockid_t, tp: *const ::timespec) -> ::c_int;
1753     pub fn clock_getcpuclockid(pid: ::pid_t, clk_id: *mut ::clockid_t) -> ::c_int;
1754 
1755     pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;
1756 
1757     pub fn pthread_getattr_np(native: ::pthread_t, attr: *mut ::pthread_attr_t) -> ::c_int;
1758     pub fn pthread_attr_getstack(
1759         attr: *const ::pthread_attr_t,
1760         stackaddr: *mut *mut ::c_void,
1761         stacksize: *mut ::size_t,
1762     ) -> ::c_int;
1763     pub fn memalign(align: ::size_t, size: ::size_t) -> *mut ::c_void;
1764     pub fn setgroups(ngroups: ::size_t, ptr: *const ::gid_t) -> ::c_int;
1765     pub fn pipe2(fds: *mut ::c_int, flags: ::c_int) -> ::c_int;
1766     pub fn statfs(path: *const ::c_char, buf: *mut statfs) -> ::c_int;
1767     pub fn fstatfs(fd: ::c_int, buf: *mut statfs) -> ::c_int;
1768     pub fn memrchr(cx: *const ::c_void, c: ::c_int, n: ::size_t) -> *mut ::c_void;
1769     pub fn posix_fadvise(fd: ::c_int, offset: ::off_t, len: ::off_t, advise: ::c_int) -> ::c_int;
1770     pub fn futimens(fd: ::c_int, times: *const ::timespec) -> ::c_int;
1771     pub fn utimensat(
1772         dirfd: ::c_int,
1773         path: *const ::c_char,
1774         times: *const ::timespec,
1775         flag: ::c_int,
1776     ) -> ::c_int;
1777     pub fn duplocale(base: ::locale_t) -> ::locale_t;
1778     pub fn freelocale(loc: ::locale_t);
1779     pub fn newlocale(mask: ::c_int, locale: *const ::c_char, base: ::locale_t) -> ::locale_t;
1780     pub fn uselocale(loc: ::locale_t) -> ::locale_t;
1781     pub fn mknodat(
1782         dirfd: ::c_int,
1783         pathname: *const ::c_char,
1784         mode: ::mode_t,
1785         dev: dev_t,
1786     ) -> ::c_int;
1787     pub fn pthread_condattr_getclock(
1788         attr: *const pthread_condattr_t,
1789         clock_id: *mut clockid_t,
1790     ) -> ::c_int;
1791     pub fn pthread_condattr_setclock(
1792         attr: *mut pthread_condattr_t,
1793         clock_id: ::clockid_t,
1794     ) -> ::c_int;
1795     pub fn pthread_condattr_setpshared(attr: *mut pthread_condattr_t, pshared: ::c_int) -> ::c_int;
1796     pub fn pthread_mutexattr_setpshared(
1797         attr: *mut pthread_mutexattr_t,
1798         pshared: ::c_int,
1799     ) -> ::c_int;
1800     pub fn pthread_rwlockattr_getpshared(
1801         attr: *const pthread_rwlockattr_t,
1802         val: *mut ::c_int,
1803     ) -> ::c_int;
1804     pub fn pthread_rwlockattr_setpshared(attr: *mut pthread_rwlockattr_t, val: ::c_int) -> ::c_int;
1805     pub fn ptsname_r(fd: ::c_int, buf: *mut ::c_char, buflen: ::size_t) -> ::c_int;
1806     pub fn clearenv() -> ::c_int;
1807     pub fn waitid(idtype: idtype_t, id: id_t, infop: *mut ::siginfo_t, options: ::c_int)
1808         -> ::c_int;
1809     pub fn getresuid(ruid: *mut ::uid_t, euid: *mut ::uid_t, suid: *mut ::uid_t) -> ::c_int;
1810     pub fn getresgid(rgid: *mut ::gid_t, egid: *mut ::gid_t, sgid: *mut ::gid_t) -> ::c_int;
1811     pub fn acct(filename: *const ::c_char) -> ::c_int;
1812     pub fn brk(addr: *mut ::c_void) -> ::c_int;
1813     pub fn sbrk(increment: ::intptr_t) -> *mut ::c_void;
1814     #[deprecated(
1815         since = "0.2.66",
1816         note = "causes memory corruption, see rust-lang/libc#1596"
1817     )]
1818     pub fn vfork() -> ::pid_t;
1819     pub fn setresgid(rgid: ::gid_t, egid: ::gid_t, sgid: ::gid_t) -> ::c_int;
1820     pub fn setresuid(ruid: ::uid_t, euid: ::uid_t, suid: ::uid_t) -> ::c_int;
1821     pub fn wait4(
1822         pid: ::pid_t,
1823         status: *mut ::c_int,
1824         options: ::c_int,
1825         rusage: *mut ::rusage,
1826     ) -> ::pid_t;
1827     pub fn login_tty(fd: ::c_int) -> ::c_int;
1828 
1829     // DIFF(main): changed to `*const *mut` in e77f551de9
1830     pub fn execvpe(
1831         file: *const ::c_char,
1832         argv: *const *const ::c_char,
1833         envp: *const *const ::c_char,
1834     ) -> ::c_int;
1835     pub fn fexecve(
1836         fd: ::c_int,
1837         argv: *const *const ::c_char,
1838         envp: *const *const ::c_char,
1839     ) -> ::c_int;
1840 
1841     pub fn getifaddrs(ifap: *mut *mut ::ifaddrs) -> ::c_int;
1842     pub fn freeifaddrs(ifa: *mut ::ifaddrs);
1843     pub fn bind(socket: ::c_int, address: *const ::sockaddr, address_len: ::socklen_t) -> ::c_int;
1844 
1845     pub fn writev(fd: ::c_int, iov: *const ::iovec, iovcnt: ::c_int) -> ::ssize_t;
1846     pub fn readv(fd: ::c_int, iov: *const ::iovec, iovcnt: ::c_int) -> ::ssize_t;
1847 
1848     pub fn sendmsg(fd: ::c_int, msg: *const ::msghdr, flags: ::c_int) -> ::ssize_t;
1849     pub fn recvmsg(fd: ::c_int, msg: *mut ::msghdr, flags: ::c_int) -> ::ssize_t;
1850     pub fn uname(buf: *mut ::utsname) -> ::c_int;
1851 
1852     pub fn strchrnul(s: *const ::c_char, c: ::c_int) -> *mut ::c_char;
1853 
1854     pub fn strftime(
1855         s: *mut ::c_char,
1856         max: ::size_t,
1857         format: *const ::c_char,
1858         tm: *const ::tm,
1859     ) -> ::size_t;
1860     pub fn strftime_l(
1861         s: *mut ::c_char,
1862         max: ::size_t,
1863         format: *const ::c_char,
1864         tm: *const ::tm,
1865         locale: ::locale_t,
1866     ) -> ::size_t;
1867     pub fn strptime(s: *const ::c_char, format: *const ::c_char, tm: *mut ::tm) -> *mut ::c_char;
1868 
1869     pub fn mkostemp(template: *mut ::c_char, flags: ::c_int) -> ::c_int;
1870     pub fn mkostemps(template: *mut ::c_char, suffixlen: ::c_int, flags: ::c_int) -> ::c_int;
1871 }
1872 
1873 // LFS64 extensions
1874 //
1875 // * musl and Emscripten has 64-bit versions only so aliases the LFS64 symbols to the standard ones
1876 // * ulibc doesn't have preadv64/pwritev64
1877 cfg_if! {
1878     if #[cfg(not(any(target_env = "musl", target_os = "emscripten")))] {
1879         extern "C" {
1880             pub fn fstatfs64(fd: ::c_int, buf: *mut statfs64) -> ::c_int;
1881             pub fn statvfs64(path: *const ::c_char, buf: *mut statvfs64) -> ::c_int;
1882             pub fn fstatvfs64(fd: ::c_int, buf: *mut statvfs64) -> ::c_int;
1883             pub fn statfs64(path: *const ::c_char, buf: *mut statfs64) -> ::c_int;
1884             pub fn creat64(path: *const c_char, mode: mode_t) -> ::c_int;
1885             pub fn fstat64(fildes: ::c_int, buf: *mut stat64) -> ::c_int;
1886             pub fn fstatat64(
1887                 dirfd: ::c_int,
1888                 pathname: *const c_char,
1889                 buf: *mut stat64,
1890                 flags: ::c_int,
1891             ) -> ::c_int;
1892             pub fn ftruncate64(fd: ::c_int, length: off64_t) -> ::c_int;
1893             pub fn lseek64(fd: ::c_int, offset: off64_t, whence: ::c_int) -> off64_t;
1894             pub fn lstat64(path: *const c_char, buf: *mut stat64) -> ::c_int;
1895             pub fn mmap64(
1896                 addr: *mut ::c_void,
1897                 len: ::size_t,
1898                 prot: ::c_int,
1899                 flags: ::c_int,
1900                 fd: ::c_int,
1901                 offset: off64_t,
1902             ) -> *mut ::c_void;
1903             pub fn open64(path: *const c_char, oflag: ::c_int, ...) -> ::c_int;
1904             pub fn openat64(fd: ::c_int, path: *const c_char, oflag: ::c_int, ...) -> ::c_int;
1905             pub fn posix_fadvise64(
1906                 fd: ::c_int,
1907                 offset: ::off64_t,
1908                 len: ::off64_t,
1909                 advise: ::c_int,
1910             ) -> ::c_int;
1911             pub fn pread64(
1912                 fd: ::c_int,
1913                 buf: *mut ::c_void,
1914                 count: ::size_t,
1915                 offset: off64_t,
1916             ) -> ::ssize_t;
1917             pub fn pwrite64(
1918                 fd: ::c_int,
1919                 buf: *const ::c_void,
1920                 count: ::size_t,
1921                 offset: off64_t,
1922             ) -> ::ssize_t;
1923             pub fn readdir64(dirp: *mut ::DIR) -> *mut ::dirent64;
1924             pub fn readdir64_r(
1925                 dirp: *mut ::DIR,
1926                 entry: *mut ::dirent64,
1927                 result: *mut *mut ::dirent64,
1928             ) -> ::c_int;
1929             pub fn stat64(path: *const c_char, buf: *mut stat64) -> ::c_int;
1930             pub fn truncate64(path: *const c_char, length: off64_t) -> ::c_int;
1931         }
1932     }
1933 }
1934 
1935 cfg_if! {
1936     if #[cfg(not(any(
1937         target_env = "uclibc",
1938         target_env = "musl",
1939         target_os = "emscripten"
1940     )))] {
1941         extern "C" {
1942             pub fn preadv64(
1943                 fd: ::c_int,
1944                 iov: *const ::iovec,
1945                 iovcnt: ::c_int,
1946                 offset: ::off64_t,
1947             ) -> ::ssize_t;
1948             pub fn pwritev64(
1949                 fd: ::c_int,
1950                 iov: *const ::iovec,
1951                 iovcnt: ::c_int,
1952                 offset: ::off64_t,
1953             ) -> ::ssize_t;
1954         }
1955     }
1956 }
1957 
1958 cfg_if! {
1959     if #[cfg(not(target_env = "uclibc"))] {
1960         extern "C" {
1961             // uclibc has separate non-const version of this function
1962             pub fn forkpty(
1963                 amaster: *mut ::c_int,
1964                 name: *mut ::c_char,
1965                 termp: *const termios,
1966                 winp: *const ::winsize,
1967             ) -> ::pid_t;
1968             // uclibc has separate non-const version of this function
1969             pub fn openpty(
1970                 amaster: *mut ::c_int,
1971                 aslave: *mut ::c_int,
1972                 name: *mut ::c_char,
1973                 termp: *const termios,
1974                 winp: *const ::winsize,
1975             ) -> ::c_int;
1976         }
1977     }
1978 }
1979 
1980 // The statx syscall, available on some libcs.
1981 cfg_if! {
1982     if #[cfg(any(target_env = "gnu", target_os = "android"))] {
1983         extern "C" {
1984             pub fn statx(
1985                 dirfd: ::c_int,
1986                 pathname: *const ::c_char,
1987                 flags: ::c_int,
1988                 mask: ::c_uint,
1989                 statxbuf: *mut statx,
1990             ) -> ::c_int;
1991         }
1992     }
1993 }
1994 
1995 cfg_if! {
1996     if #[cfg(target_os = "emscripten")] {
1997         mod emscripten;
1998         pub use self::emscripten::*;
1999     } else if #[cfg(target_os = "linux")] {
2000         mod linux;
2001         pub use self::linux::*;
2002     } else if #[cfg(target_os = "l4re")] {
2003         mod linux;
2004         pub use self::linux::*;
2005     } else if #[cfg(target_os = "android")] {
2006         mod android;
2007         pub use self::android::*;
2008     } else {
2009         // Unknown target_os
2010     }
2011 }
2012