xref: /rust-libc-0.2.174/libc-test/build.rs (revision f1ede75a)
1 #![deny(warnings)]
2 
3 extern crate cc;
4 extern crate ctest2 as ctest;
5 
6 use std::fs::File;
7 use std::io::{BufRead, BufReader, BufWriter, Write};
8 use std::path::{Path, PathBuf};
9 use std::{env, io};
10 
11 fn do_cc() {
12     let target = env::var("TARGET").unwrap();
13     if cfg!(unix) {
14         let exclude = ["redox", "wasi"];
15         if !exclude.iter().any(|x| target.contains(x)) {
16             let mut cmsg = cc::Build::new();
17 
18             cmsg.file("src/cmsg.c");
19 
20             if target.contains("solaris") || target.contains("illumos") {
21                 cmsg.define("_XOPEN_SOURCE", "700");
22             }
23             cmsg.compile("cmsg");
24         }
25 
26         if target.contains("linux")
27             || target.contains("android")
28             || target.contains("emscripten")
29             || target.contains("fuchsia")
30             || target.contains("bsd")
31         {
32             cc::Build::new().file("src/makedev.c").compile("makedev");
33         }
34     }
35     if target.contains("android") || target.contains("linux") {
36         cc::Build::new().file("src/errqueue.c").compile("errqueue");
37     }
38     if target.contains("linux")
39         || target.contains("l4re")
40         || target.contains("android")
41         || target.contains("emscripten")
42     {
43         cc::Build::new().file("src/sigrt.c").compile("sigrt");
44     }
45 }
46 
47 fn do_ctest() {
48     match &env::var("TARGET").unwrap() {
49         t if t.contains("android") => return test_android(t),
50         t if t.contains("apple") => return test_apple(t),
51         t if t.contains("dragonfly") => return test_dragonflybsd(t),
52         t if t.contains("emscripten") => return test_emscripten(t),
53         t if t.contains("freebsd") => return test_freebsd(t),
54         t if t.contains("haiku") => return test_haiku(t),
55         t if t.contains("linux") => return test_linux(t),
56         t if t.contains("netbsd") => return test_netbsd(t),
57         t if t.contains("openbsd") => return test_openbsd(t),
58         t if t.contains("redox") => return test_redox(t),
59         t if t.contains("solaris") => return test_solarish(t),
60         t if t.contains("illumos") => return test_solarish(t),
61         t if t.contains("wasi") => return test_wasi(t),
62         t if t.contains("windows") => return test_windows(t),
63         t if t.contains("vxworks") => return test_vxworks(t),
64         t if t.contains("nto-qnx") => return test_neutrino(t),
65         t => panic!("unknown target {}", t),
66     }
67 }
68 
69 fn ctest_cfg() -> ctest::TestGenerator {
70     let mut cfg = ctest::TestGenerator::new();
71     let libc_cfgs = [
72         "libc_priv_mod_use",
73         "libc_union",
74         "libc_const_size_of",
75         "libc_align",
76         "libc_core_cvoid",
77         "libc_packedN",
78         "libc_thread_local",
79     ];
80     for f in &libc_cfgs {
81         cfg.cfg(f, None);
82     }
83     cfg
84 }
85 
86 fn do_semver() {
87     let mut out = PathBuf::from(env::var("OUT_DIR").unwrap());
88     out.push("semver.rs");
89     let mut output = BufWriter::new(File::create(&out).unwrap());
90 
91     let family = env::var("CARGO_CFG_TARGET_FAMILY").unwrap();
92     let vendor = env::var("CARGO_CFG_TARGET_VENDOR").unwrap();
93     let os = env::var("CARGO_CFG_TARGET_OS").unwrap();
94     let arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
95     let target_env = env::var("CARGO_CFG_TARGET_ENV").unwrap();
96 
97     // `libc-test/semver` dir.
98     let mut semver_root = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
99     semver_root.push("semver");
100 
101     // NOTE: Windows has the same `family` as `os`, no point in including it
102     // twice.
103     // NOTE: Android doesn't include the unix file (or the Linux file) because
104     // there are some many definitions missing it's actually easier just to
105     // maintain a file for Android.
106     if family != os && os != "android" {
107         process_semver_file(&mut output, &mut semver_root, &family);
108     }
109     process_semver_file(&mut output, &mut semver_root, &vendor);
110     process_semver_file(&mut output, &mut semver_root, &os);
111     let os_arch = format!("{}-{}", os, arch);
112     process_semver_file(&mut output, &mut semver_root, &os_arch);
113     if target_env != "" {
114         let os_env = format!("{}-{}", os, target_env);
115         process_semver_file(&mut output, &mut semver_root, &os_env);
116 
117         let os_env_arch = format!("{}-{}-{}", os, target_env, arch);
118         process_semver_file(&mut output, &mut semver_root, &os_env_arch);
119     }
120 }
121 
122 fn process_semver_file<W: Write, P: AsRef<Path>>(output: &mut W, path: &mut PathBuf, file: P) {
123     // NOTE: `path` is reused between calls, so always remove the file again.
124     path.push(file);
125     path.set_extension("txt");
126 
127     println!("cargo:rerun-if-changed={}", path.display());
128     let input_file = match File::open(&*path) {
129         Ok(file) => file,
130         Err(ref err) if err.kind() == io::ErrorKind::NotFound => {
131             path.pop();
132             return;
133         }
134         Err(err) => panic!("unexpected error opening file: {}", err),
135     };
136     let input = BufReader::new(input_file);
137 
138     write!(output, "// Source: {}.\n", path.display()).unwrap();
139     output.write(b"use libc::{\n").unwrap();
140     for line in input.lines() {
141         let line = line.unwrap().into_bytes();
142         match line.first() {
143             // Ignore comments and empty lines.
144             Some(b'#') | None => continue,
145             _ => {
146                 output.write(b"    ").unwrap();
147                 output.write(&line).unwrap();
148                 output.write(b",\n").unwrap();
149             }
150         }
151     }
152     output.write(b"};\n\n").unwrap();
153     path.pop();
154 }
155 
156 fn main() {
157     do_cc();
158     do_ctest();
159     do_semver();
160 }
161 
162 macro_rules! headers {
163     ($cfg:ident: [$m:expr]: $header:literal) => {
164         if $m {
165             $cfg.header($header);
166         }
167     };
168     ($cfg:ident: $header:literal) => {
169         $cfg.header($header);
170     };
171     ($($cfg:ident: $([$c:expr]:)* $header:literal,)*) => {
172         $(headers!($cfg: $([$c]:)* $header);)*
173     };
174     ($cfg:ident: $( $([$c:expr]:)* $header:literal,)*) => {
175         headers!($($cfg: $([$c]:)* $header,)*);
176     };
177     ($cfg:ident: $( $([$c:expr]:)* $header:literal),*) => {
178         headers!($($cfg: $([$c]:)* $header,)*);
179     };
180 }
181 
182 fn test_apple(target: &str) {
183     assert!(target.contains("apple"));
184     let x86_64 = target.contains("x86_64");
185     let i686 = target.contains("i686");
186 
187     let mut cfg = ctest_cfg();
188     cfg.flag("-Wno-deprecated-declarations");
189     cfg.define("__APPLE_USE_RFC_3542", None);
190 
191     headers! { cfg:
192         "aio.h",
193         "CommonCrypto/CommonCrypto.h",
194         "CommonCrypto/CommonRandom.h",
195         "copyfile.h",
196         "crt_externs.h",
197         "ctype.h",
198         "dirent.h",
199         "dlfcn.h",
200         "errno.h",
201         "execinfo.h",
202         "fcntl.h",
203         "getopt.h",
204         "glob.h",
205         "grp.h",
206         "iconv.h",
207         "ifaddrs.h",
208         "langinfo.h",
209         "libgen.h",
210         "libproc.h",
211         "limits.h",
212         "locale.h",
213         "mach-o/dyld.h",
214         "mach/mach_init.h",
215         "mach/mach.h",
216         "mach/mach_time.h",
217         "mach/mach_types.h",
218         "mach/mach_vm.h",
219         "mach/thread_act.h",
220         "mach/thread_policy.h",
221         "malloc/malloc.h",
222         "net/bpf.h",
223         "net/dlil.h",
224         "net/if.h",
225         "net/if_arp.h",
226         "net/if_dl.h",
227         "net/if_utun.h",
228         "net/if_var.h",
229         "net/ndrv.h",
230         "net/route.h",
231         "netdb.h",
232         "netinet/if_ether.h",
233         "netinet/in.h",
234         "netinet/ip.h",
235         "netinet/tcp.h",
236         "netinet/udp.h",
237         "os/lock.h",
238         "os/signpost.h",
239         "poll.h",
240         "pthread.h",
241         "pthread_spis.h",
242         "pthread/introspection.h",
243         "pthread/spawn.h",
244         "pthread/stack_np.h",
245         "pwd.h",
246         "regex.h",
247         "resolv.h",
248         "sched.h",
249         "semaphore.h",
250         "signal.h",
251         "spawn.h",
252         "stddef.h",
253         "stdint.h",
254         "stdio.h",
255         "stdlib.h",
256         "string.h",
257         "sysdir.h",
258         "sys/appleapiopts.h",
259         "sys/attr.h",
260         "sys/clonefile.h",
261         "sys/event.h",
262         "sys/file.h",
263         "sys/ioctl.h",
264         "sys/ipc.h",
265         "sys/kern_control.h",
266         "sys/mman.h",
267         "sys/mount.h",
268         "sys/proc_info.h",
269         "sys/ptrace.h",
270         "sys/quota.h",
271         "sys/resource.h",
272         "sys/sem.h",
273         "sys/shm.h",
274         "sys/socket.h",
275         "sys/stat.h",
276         "sys/statvfs.h",
277         "sys/sys_domain.h",
278         "sys/sysctl.h",
279         "sys/time.h",
280         "sys/times.h",
281         "sys/timex.h",
282         "sys/types.h",
283         "sys/uio.h",
284         "sys/un.h",
285         "sys/utsname.h",
286         "sys/wait.h",
287         "sys/xattr.h",
288         "syslog.h",
289         "termios.h",
290         "time.h",
291         "unistd.h",
292         "util.h",
293         "utime.h",
294         "utmpx.h",
295         "wchar.h",
296         "xlocale.h",
297         [x86_64]: "crt_externs.h",
298     }
299 
300     cfg.skip_struct(move |ty| {
301         match ty {
302             // FIXME: actually a union
303             "sigval" => true,
304 
305             // FIXME: The size is changed in recent macOSes.
306             "malloc_zone_t" => true,
307 
308             _ => false,
309         }
310     });
311 
312     cfg.skip_type(move |ty| match ty {
313         _ => false,
314     });
315 
316     cfg.skip_const(move |name| {
317         // They're declared via `deprecated_mach` and we don't support it anymore.
318         if name.starts_with("VM_FLAGS_") {
319             return true;
320         }
321         match name {
322             // These OSX constants are removed in Sierra.
323             // https://developer.apple.com/library/content/releasenotes/General/APIDiffsMacOS10_12/Swift/Darwin.html
324             "KERN_KDENABLE_BG_TRACE" | "KERN_KDDISABLE_BG_TRACE" => true,
325             // FIXME: the value has been changed since Catalina (0xffff0000 -> 0x3fff0000).
326             "SF_SETTABLE" => true,
327 
328             // FIXME: XCode 13.1 doesn't have it.
329             "TIOCREMOTE" => true,
330             _ => false,
331         }
332     });
333 
334     cfg.skip_fn(move |name| {
335         // skip those that are manually verified
336         match name {
337             // FIXME: https://github.com/rust-lang/libc/issues/1272
338             "execv" | "execve" | "execvp" => true,
339 
340             // close calls the close_nocancel system call
341             "close" => true,
342 
343             // FIXME: libstd removed libresolv support: https://github.com/rust-lang/rust/pull/102766
344             "res_init" => true,
345 
346             // FIXME: remove once the target in CI is updated
347             "pthread_jit_write_freeze_callbacks_np" => true,
348 
349             // FIXME: ABI has been changed on recent macOSes.
350             "os_unfair_lock_assert_owner" | "os_unfair_lock_assert_not_owner" => true,
351 
352             _ => false,
353         }
354     });
355 
356     cfg.skip_field(move |struct_, field| {
357         match (struct_, field) {
358             // FIXME: the array size has been changed since macOS 10.15 ([8] -> [7]).
359             ("statfs", "f_reserved") => true,
360             ("__darwin_arm_neon_state64", "__v") => true,
361             // MAXPATHLEN is too big for auto-derive traits on arrays.
362             ("vnode_info_path", "vip_path") => true,
363             _ => false,
364         }
365     });
366 
367     cfg.skip_field_type(move |struct_, field| {
368         match (struct_, field) {
369             // FIXME: actually a union
370             ("sigevent", "sigev_value") => true,
371             _ => false,
372         }
373     });
374 
375     cfg.volatile_item(|i| {
376         use ctest::VolatileItemKind::*;
377         match i {
378             StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => true,
379             _ => false,
380         }
381     });
382 
383     cfg.type_name(move |ty, is_struct, is_union| {
384         match ty {
385             // Just pass all these through, no need for a "struct" prefix
386             "FILE" | "DIR" | "Dl_info" => ty.to_string(),
387 
388             // OSX calls this something else
389             "sighandler_t" => "sig_t".to_string(),
390 
391             t if is_union => format!("union {}", t),
392             t if t.ends_with("_t") => t.to_string(),
393             t if is_struct => format!("struct {}", t),
394             t => t.to_string(),
395         }
396     });
397 
398     cfg.field_name(move |struct_, field| {
399         match field {
400             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
401                 s.replace("e_nsec", "espec.tv_nsec")
402             }
403             // FIXME: sigaction actually contains a union with two variants:
404             // a sa_sigaction with type: (*)(int, struct __siginfo *, void *)
405             // a sa_handler with type sig_t
406             "sa_sigaction" if struct_ == "sigaction" => "sa_handler".to_string(),
407             s => s.to_string(),
408         }
409     });
410 
411     cfg.skip_roundtrip(move |s| match s {
412         // FIXME: this type has the wrong ABI
413         "max_align_t" if i686 => true,
414         // Can't return an array from a C function.
415         "uuid_t" | "vol_capabilities_set_t" => true,
416         _ => false,
417     });
418     cfg.generate("../src/lib.rs", "main.rs");
419 }
420 
421 fn test_openbsd(target: &str) {
422     assert!(target.contains("openbsd"));
423 
424     let mut cfg = ctest_cfg();
425     cfg.flag("-Wno-deprecated-declarations");
426 
427     let x86_64 = target.contains("x86_64");
428 
429     headers! { cfg:
430         "elf.h",
431         "errno.h",
432         "execinfo.h",
433         "fcntl.h",
434         "getopt.h",
435         "libgen.h",
436         "limits.h",
437         "link.h",
438         "locale.h",
439         "stddef.h",
440         "stdint.h",
441         "stdio.h",
442         "stdlib.h",
443         "sys/stat.h",
444         "sys/types.h",
445         "time.h",
446         "wchar.h",
447         "ctype.h",
448         "dirent.h",
449         "sys/socket.h",
450         [x86_64]:"machine/fpu.h",
451         "net/if.h",
452         "net/route.h",
453         "net/if_arp.h",
454         "netdb.h",
455         "netinet/in.h",
456         "netinet/ip.h",
457         "netinet/tcp.h",
458         "netinet/udp.h",
459         "net/bpf.h",
460         "regex.h",
461         "resolv.h",
462         "pthread.h",
463         "dlfcn.h",
464         "search.h",
465         "signal.h",
466         "string.h",
467         "sys/file.h",
468         "sys/futex.h",
469         "sys/ioctl.h",
470         "sys/ipc.h",
471         "sys/mman.h",
472         "sys/param.h",
473         "sys/resource.h",
474         "sys/shm.h",
475         "sys/socket.h",
476         "sys/time.h",
477         "sys/uio.h",
478         "sys/ktrace.h",
479         "sys/un.h",
480         "sys/wait.h",
481         "unistd.h",
482         "utime.h",
483         "pwd.h",
484         "grp.h",
485         "sys/utsname.h",
486         "sys/ptrace.h",
487         "sys/mount.h",
488         "sys/uio.h",
489         "sched.h",
490         "termios.h",
491         "poll.h",
492         "syslog.h",
493         "semaphore.h",
494         "sys/statvfs.h",
495         "sys/times.h",
496         "glob.h",
497         "ifaddrs.h",
498         "langinfo.h",
499         "sys/sysctl.h",
500         "utmp.h",
501         "sys/event.h",
502         "net/if_dl.h",
503         "util.h",
504         "ufs/ufs/quota.h",
505         "pthread_np.h",
506         "sys/syscall.h",
507         "sys/shm.h",
508         "sys/param.h",
509     }
510 
511     cfg.skip_struct(move |ty| {
512         match ty {
513             // FIXME: actually a union
514             "sigval" => true,
515 
516             _ => false,
517         }
518     });
519 
520     cfg.skip_const(move |name| {
521         match name {
522             // Removed in OpenBSD 6.0
523             "KERN_USERMOUNT" | "KERN_ARND" => true,
524             // Removed in OpenBSD 7.2
525             "KERN_NSELCOLL" => true,
526             // Good chance it's going to be wrong depending on the host release
527             "KERN_MAXID" | "NET_RT_MAXID" => true,
528             "EV_SYSFLAGS" => true,
529             _ => false,
530         }
531     });
532 
533     cfg.skip_fn(move |name| {
534         match name {
535             // FIXME: https://github.com/rust-lang/libc/issues/1272
536             "execv" | "execve" | "execvp" | "execvpe" => true,
537 
538             // Removed in OpenBSD 6.5
539             // https://marc.info/?l=openbsd-cvs&m=154723400730318
540             "mincore" => true,
541 
542             // futex() has volatile arguments, but that doesn't exist in Rust.
543             "futex" => true,
544 
545             // Available for openBSD 7.3
546             "mimmutable" => true,
547 
548             _ => false,
549         }
550     });
551 
552     cfg.type_name(move |ty, is_struct, is_union| {
553         match ty {
554             // Just pass all these through, no need for a "struct" prefix
555             "FILE" | "DIR" | "Dl_info" | "Elf32_Phdr" | "Elf64_Phdr" => ty.to_string(),
556 
557             // OSX calls this something else
558             "sighandler_t" => "sig_t".to_string(),
559 
560             t if is_union => format!("union {}", t),
561             t if t.ends_with("_t") => t.to_string(),
562             t if is_struct => format!("struct {}", t),
563             t => t.to_string(),
564         }
565     });
566 
567     cfg.field_name(move |struct_, field| match field {
568         "st_birthtime" if struct_.starts_with("stat") => "__st_birthtime".to_string(),
569         "st_birthtime_nsec" if struct_.starts_with("stat") => "__st_birthtimensec".to_string(),
570         s if s.ends_with("_nsec") && struct_.starts_with("stat") => s.replace("e_nsec", ".tv_nsec"),
571         "sa_sigaction" if struct_ == "sigaction" => "sa_handler".to_string(),
572         s => s.to_string(),
573     });
574 
575     cfg.skip_field_type(move |struct_, field| {
576         // type siginfo_t.si_addr changed from OpenBSD 6.0 to 6.1
577         struct_ == "siginfo_t" && field == "si_addr"
578     });
579 
580     cfg.skip_field(|struct_, field| {
581         match (struct_, field) {
582             // conflicting with `p_type` macro from <resolve.h>.
583             ("Elf32_Phdr", "p_type") => true,
584             ("Elf64_Phdr", "p_type") => true,
585             _ => false,
586         }
587     });
588 
589     cfg.generate("../src/lib.rs", "main.rs");
590 }
591 
592 fn test_windows(target: &str) {
593     assert!(target.contains("windows"));
594     let gnu = target.contains("gnu");
595 
596     let mut cfg = ctest_cfg();
597     if target.contains("msvc") {
598         cfg.flag("/wd4324");
599     }
600     cfg.define("_WIN32_WINNT", Some("0x8000"));
601 
602     headers! { cfg:
603         "direct.h",
604         "errno.h",
605         "fcntl.h",
606         "io.h",
607         "limits.h",
608         "locale.h",
609         "process.h",
610         "signal.h",
611         "stddef.h",
612         "stdint.h",
613         "stdio.h",
614         "stdlib.h",
615         "sys/stat.h",
616         "sys/types.h",
617         "sys/utime.h",
618         "time.h",
619         "wchar.h",
620         [gnu]: "ws2tcpip.h",
621         [!gnu]: "Winsock2.h",
622     }
623 
624     cfg.type_name(move |ty, is_struct, is_union| {
625         match ty {
626             // Just pass all these through, no need for a "struct" prefix
627             "FILE" | "DIR" | "Dl_info" => ty.to_string(),
628 
629             // FIXME: these don't exist:
630             "time64_t" => "__time64_t".to_string(),
631             "ssize_t" => "SSIZE_T".to_string(),
632 
633             "sighandler_t" if !gnu => "_crt_signal_t".to_string(),
634             "sighandler_t" if gnu => "__p_sig_fn_t".to_string(),
635 
636             t if is_union => format!("union {}", t),
637             t if t.ends_with("_t") => t.to_string(),
638 
639             // Windows uppercase structs don't have `struct` in front:
640             t if is_struct => {
641                 if ty.clone().chars().next().unwrap().is_uppercase() {
642                     t.to_string()
643                 } else if t == "stat" {
644                     "struct __stat64".to_string()
645                 } else if t == "utimbuf" {
646                     "struct __utimbuf64".to_string()
647                 } else {
648                     // put `struct` in front of all structs:
649                     format!("struct {}", t)
650                 }
651             }
652             t => t.to_string(),
653         }
654     });
655 
656     cfg.fn_cname(move |name, cname| cname.unwrap_or(name).to_string());
657 
658     cfg.skip_type(move |name| match name {
659         "SSIZE_T" if !gnu => true,
660         "ssize_t" if !gnu => true,
661         _ => false,
662     });
663 
664     cfg.skip_struct(move |ty| {
665         if ty.starts_with("__c_anonymous_") {
666             return true;
667         }
668         return false;
669     });
670 
671     cfg.skip_const(move |name| {
672         match name {
673             // FIXME: API error:
674             // SIG_ERR type is "void (*)(int)", not "int"
675             "SIG_ERR" |
676             // Similar for SIG_DFL/IGN/GET/SGE/ACK
677             "SIG_DFL" | "SIG_IGN" | "SIG_GET" | "SIG_SGE" | "SIG_ACK" => true,
678             // FIXME: newer windows-gnu environment on CI?
679             "_O_OBTAIN_DIR" if gnu => true,
680             _ => false,
681         }
682     });
683 
684     cfg.skip_field(move |s, field| match s {
685         "CONTEXT" if field == "Fp" => true,
686         _ => false,
687     });
688     // FIXME: All functions point to the wrong addresses?
689     cfg.skip_fn_ptrcheck(|_| true);
690 
691     cfg.skip_signededness(move |c| {
692         match c {
693             // windows-isms
694             n if n.starts_with("P") => true,
695             n if n.starts_with("H") => true,
696             n if n.starts_with("LP") => true,
697             "sighandler_t" if gnu => true,
698             _ => false,
699         }
700     });
701 
702     cfg.skip_fn(move |name| {
703         match name {
704             // FIXME: https://github.com/rust-lang/libc/issues/1272
705             "execv" | "execve" | "execvp" | "execvpe" => true,
706 
707             _ => false,
708         }
709     });
710 
711     cfg.generate("../src/lib.rs", "main.rs");
712 }
713 
714 fn test_redox(target: &str) {
715     assert!(target.contains("redox"));
716 
717     let mut cfg = ctest_cfg();
718     cfg.flag("-Wno-deprecated-declarations");
719 
720     headers! {
721         cfg:
722         "ctype.h",
723         "dirent.h",
724         "dlfcn.h",
725         "errno.h",
726         "fcntl.h",
727         "grp.h",
728         "limits.h",
729         "locale.h",
730         "netdb.h",
731         "netinet/in.h",
732         "netinet/ip.h",
733         "netinet/tcp.h",
734         "poll.h",
735         "pwd.h",
736         "semaphore.h",
737         "string.h",
738         "strings.h",
739         "sys/file.h",
740         "sys/ioctl.h",
741         "sys/mman.h",
742         "sys/ptrace.h",
743         "sys/resource.h",
744         "sys/socket.h",
745         "sys/stat.h",
746         "sys/statvfs.h",
747         "sys/time.h",
748         "sys/types.h",
749         "sys/uio.h",
750         "sys/un.h",
751         "sys/utsname.h",
752         "sys/wait.h",
753         "termios.h",
754         "time.h",
755         "unistd.h",
756         "utime.h",
757         "wchar.h",
758     }
759 
760     cfg.generate("../src/lib.rs", "main.rs");
761 }
762 
763 fn test_solarish(target: &str) {
764     let is_solaris = target.contains("solaris");
765     let is_illumos = target.contains("illumos");
766     assert!(is_solaris || is_illumos);
767 
768     // ctest generates arguments supported only by clang, so make sure to run with CC=clang.
769     // While debugging, "CFLAGS=-ferror-limit=<large num>" is useful to get more error output.
770     let mut cfg = ctest_cfg();
771     cfg.flag("-Wno-deprecated-declarations");
772 
773     cfg.define("_XOPEN_SOURCE", Some("700"));
774     cfg.define("__EXTENSIONS__", None);
775     cfg.define("_LCONV_C99", None);
776 
777     headers! {
778         cfg:
779         "ctype.h",
780         "dirent.h",
781         "dlfcn.h",
782         "door.h",
783         "errno.h",
784         "execinfo.h",
785         "fcntl.h",
786         "getopt.h",
787         "glob.h",
788         "grp.h",
789         "ifaddrs.h",
790         "langinfo.h",
791         "limits.h",
792         "link.h",
793         "locale.h",
794         "mqueue.h",
795         "net/if.h",
796         "net/if_arp.h",
797         "net/route.h",
798         "netdb.h",
799         "netinet/in.h",
800         "netinet/ip.h",
801         "netinet/tcp.h",
802         "netinet/udp.h",
803         "poll.h",
804         "port.h",
805         "pthread.h",
806         "pwd.h",
807         "resolv.h",
808         "sched.h",
809         "semaphore.h",
810         "signal.h",
811         "stddef.h",
812         "stdint.h",
813         "stdio.h",
814         "stdlib.h",
815         "string.h",
816         "sys/auxv.h",
817         "sys/epoll.h",
818         "sys/eventfd.h",
819         "sys/file.h",
820         "sys/filio.h",
821         "sys/ioctl.h",
822         "sys/lgrp_user.h",
823         "sys/loadavg.h",
824         "sys/mman.h",
825         "sys/mount.h",
826         "sys/priv.h",
827         "sys/pset.h",
828         "sys/random.h",
829         "sys/resource.h",
830         "sys/sendfile.h",
831         "sys/socket.h",
832         "sys/stat.h",
833         "sys/statvfs.h",
834         "sys/stropts.h",
835         "sys/shm.h",
836         "sys/systeminfo.h",
837         "sys/time.h",
838         "sys/times.h",
839         "sys/timex.h",
840         "sys/types.h",
841         "sys/uio.h",
842         "sys/un.h",
843         "sys/utsname.h",
844         "sys/wait.h",
845         "syslog.h",
846         "termios.h",
847         "thread.h",
848         "time.h",
849         "priv.h",
850         "ucontext.h",
851         "unistd.h",
852         "utime.h",
853         "utmpx.h",
854         "wchar.h",
855     }
856 
857     cfg.skip_type(move |ty| match ty {
858         "sighandler_t" => true,
859         _ => false,
860     });
861 
862     cfg.type_name(move |ty, is_struct, is_union| match ty {
863         "FILE" => "__FILE".to_string(),
864         "DIR" | "Dl_info" => ty.to_string(),
865         t if t.ends_with("_t") => t.to_string(),
866         t if is_struct => format!("struct {}", t),
867         t if is_union => format!("union {}", t),
868         t => t.to_string(),
869     });
870 
871     cfg.field_name(move |struct_, field| {
872         match struct_ {
873             // rust struct uses raw u64, rather than union
874             "epoll_event" if field == "u64" => "data.u64".to_string(),
875             // rust struct was committed with typo for Solaris
876             "door_arg_t" if field == "dec_num" => "desc_num".to_string(),
877             "stat" if field.ends_with("_nsec") => {
878                 // expose stat.Xtim.tv_nsec fields
879                 field.trim_end_matches("e_nsec").to_string() + ".tv_nsec"
880             }
881             _ => field.to_string(),
882         }
883     });
884 
885     cfg.skip_const(move |name| match name {
886         "DT_FIFO" | "DT_CHR" | "DT_DIR" | "DT_BLK" | "DT_REG" | "DT_LNK" | "DT_SOCK"
887         | "USRQUOTA" | "GRPQUOTA" | "PRIO_MIN" | "PRIO_MAX" => true,
888 
889         // skip sighandler_t assignments
890         "SIG_DFL" | "SIG_ERR" | "SIG_IGN" => true,
891 
892         "DT_UNKNOWN" => true,
893 
894         "_UTX_LINESIZE" | "_UTX_USERSIZE" | "_UTX_PADSIZE" | "_UTX_IDSIZE" | "_UTX_HOSTSIZE" => {
895             true
896         }
897 
898         "EADI" | "EXTPROC" | "IPC_SEAT" => true,
899 
900         // This evaluates to a sysconf() call rather than a constant
901         "PTHREAD_STACK_MIN" => true,
902 
903         // EPOLLEXCLUSIVE is a relatively recent addition to the epoll interface and may not be
904         // defined on older systems.  It is, however, safe to use on systems which do not
905         // explicitly support it. (A no-op is an acceptable implementation of EPOLLEXCLUSIVE.)
906         "EPOLLEXCLUSIVE" => true,
907 
908         _ => false,
909     });
910 
911     cfg.skip_struct(move |ty| {
912         if ty.starts_with("__c_anonymous_") {
913             return true;
914         }
915         // the union handling is a mess
916         if ty.contains("door_desc_t_") {
917             return true;
918         }
919         match ty {
920             // union, not a struct
921             "sigval" => true,
922             // a bunch of solaris-only fields
923             "utmpx" if is_illumos => true,
924             _ => false,
925         }
926     });
927 
928     cfg.skip_field(move |s, field| {
929         match s {
930             // C99 sizing on this is tough
931             "dirent" if field == "d_name" => true,
932             // the union/macro makes this rough
933             "sigaction" if field == "sa_sigaction" => true,
934             // Missing in illumos
935             "sigevent" if field == "ss_sp" => true,
936             // Avoid sigval union issues
937             "sigevent" if field == "sigev_value" => true,
938             // const issues
939             "sigevent" if field == "sigev_notify_attributes" => true,
940 
941             // Avoid const and union issues
942             "door_arg" if field == "desc_ptr" => true,
943             "door_desc_t" if field == "d_data" => true,
944             "door_arg_t" if field.ends_with("_ptr") => true,
945             "door_arg_t" if field.ends_with("rbuf") => true,
946 
947             // anonymous union challenges
948             "fpregset_t" if field == "fp_reg_set" => true,
949 
950             // The LX brand (integrated into some illumos distros) commandeered several of the
951             // `uc_filler` fields to use for brand-specific state.
952             "ucontext_t" if is_illumos && (field == "uc_filler" || field == "uc_brand_data") => {
953                 true
954             }
955 
956             _ => false,
957         }
958     });
959 
960     cfg.skip_fn(move |name| {
961         // skip those that are manually verified
962         match name {
963             // const-ness only added recently
964             "dladdr" => true,
965 
966             // Definition of those functions as changed since unified headers
967             // from NDK r14b These changes imply some API breaking changes but
968             // are still ABI compatible. We can wait for the next major release
969             // to be compliant with the new API.
970             //
971             // FIXME: unskip these for next major release
972             "setpriority" | "personality" => true,
973 
974             // signal is defined in terms of sighandler_t, so ignore
975             "signal" => true,
976 
977             // Currently missing
978             "cfmakeraw" | "cfsetspeed" => true,
979 
980             // const-ness issues
981             "execv" | "execve" | "execvp" | "settimeofday" | "sethostname" => true,
982 
983             // Solaris-different
984             "getpwent_r" | "getgrent_r" | "updwtmpx" if is_illumos => true,
985             "madvise" | "mprotect" if is_illumos => true,
986             "door_call" | "door_return" | "door_create" if is_illumos => true,
987 
988             // Not visible when build with _XOPEN_SOURCE=700
989             "mmapobj" | "mmap64" | "meminfo" | "getpagesizes" | "getpagesizes2" => true,
990 
991             // These functions may return int or void depending on the exact
992             // configuration of the compilation environment, but the return
993             // value is not useful (always 0) so we can ignore it:
994             "setservent" | "endservent" if is_illumos => true,
995 
996             _ => false,
997         }
998     });
999 
1000     cfg.generate("../src/lib.rs", "main.rs");
1001 }
1002 
1003 fn test_netbsd(target: &str) {
1004     assert!(target.contains("netbsd"));
1005     let mut cfg = ctest_cfg();
1006 
1007     cfg.flag("-Wno-deprecated-declarations");
1008     cfg.define("_NETBSD_SOURCE", Some("1"));
1009 
1010     headers! {
1011         cfg:
1012         "elf.h",
1013         "errno.h",
1014         "fcntl.h",
1015         "getopt.h",
1016         "libgen.h",
1017         "limits.h",
1018         "link.h",
1019         "locale.h",
1020         "stddef.h",
1021         "stdint.h",
1022         "stdio.h",
1023         "stdlib.h",
1024         "sys/stat.h",
1025         "sys/types.h",
1026         "time.h",
1027         "wchar.h",
1028         "aio.h",
1029         "ctype.h",
1030         "dirent.h",
1031         "dlfcn.h",
1032         "glob.h",
1033         "grp.h",
1034         "ifaddrs.h",
1035         "langinfo.h",
1036         "net/bpf.h",
1037         "net/if.h",
1038         "net/if_arp.h",
1039         "net/if_dl.h",
1040         "net/route.h",
1041         "netdb.h",
1042         "netinet/in.h",
1043         "netinet/ip.h",
1044         "netinet/tcp.h",
1045         "netinet/udp.h",
1046         "poll.h",
1047         "pthread.h",
1048         "pwd.h",
1049         "regex.h",
1050         "resolv.h",
1051         "sched.h",
1052         "semaphore.h",
1053         "signal.h",
1054         "string.h",
1055         "sys/endian.h",
1056         "sys/exec_elf.h",
1057         "sys/xattr.h",
1058         "sys/extattr.h",
1059         "sys/file.h",
1060         "sys/ioctl.h",
1061         "sys/ioctl_compat.h",
1062         "sys/ipc.h",
1063         "sys/ktrace.h",
1064         "sys/mman.h",
1065         "sys/mount.h",
1066         "sys/ptrace.h",
1067         "sys/resource.h",
1068         "sys/shm.h",
1069         "sys/socket.h",
1070         "sys/statvfs.h",
1071         "sys/sysctl.h",
1072         "sys/time.h",
1073         "sys/times.h",
1074         "sys/timex.h",
1075         "sys/ucontext.h",
1076         "sys/ucred.h",
1077         "sys/uio.h",
1078         "sys/un.h",
1079         "sys/utsname.h",
1080         "sys/wait.h",
1081         "syslog.h",
1082         "termios.h",
1083         "ufs/ufs/quota.h",
1084         "ufs/ufs/quota1.h",
1085         "unistd.h",
1086         "util.h",
1087         "utime.h",
1088         "mqueue.h",
1089         "netinet/dccp.h",
1090         "sys/event.h",
1091         "sys/quota.h",
1092         "sys/shm.h",
1093         "iconv.h",
1094     }
1095 
1096     cfg.type_name(move |ty, is_struct, is_union| {
1097         match ty {
1098             // Just pass all these through, no need for a "struct" prefix
1099             "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr" | "Elf64_Phdr" | "Elf32_Shdr"
1100             | "Elf64_Shdr" | "Elf32_Sym" | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr"
1101             | "Elf32_Chdr" | "Elf64_Chdr" => ty.to_string(),
1102 
1103             // OSX calls this something else
1104             "sighandler_t" => "sig_t".to_string(),
1105 
1106             t if is_union => format!("union {}", t),
1107 
1108             t if t.ends_with("_t") => t.to_string(),
1109 
1110             // put `struct` in front of all structs:.
1111             t if is_struct => format!("struct {}", t),
1112 
1113             t => t.to_string(),
1114         }
1115     });
1116 
1117     cfg.field_name(move |struct_, field| {
1118         match field {
1119             // Our stat *_nsec fields normally don't actually exist but are part
1120             // of a timeval struct
1121             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
1122                 s.replace("e_nsec", ".tv_nsec")
1123             }
1124             "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
1125             s => s.to_string(),
1126         }
1127     });
1128 
1129     cfg.skip_type(move |ty| {
1130         if ty.starts_with("__c_anonymous_") {
1131             return true;
1132         }
1133         match ty {
1134             // FIXME: sighandler_t is crazy across platforms
1135             "sighandler_t" => true,
1136             _ => false,
1137         }
1138     });
1139 
1140     cfg.skip_struct(move |ty| {
1141         match ty {
1142             // This is actually a union, not a struct
1143             "sigval" => true,
1144             // These are tested as part of the linux_fcntl tests since there are
1145             // header conflicts when including them with all the other structs.
1146             "termios2" => true,
1147             _ => false,
1148         }
1149     });
1150 
1151     cfg.skip_signededness(move |c| {
1152         match c {
1153             "LARGE_INTEGER" | "float" | "double" => true,
1154             n if n.starts_with("pthread") => true,
1155             // sem_t is a struct or pointer
1156             "sem_t" => true,
1157             _ => false,
1158         }
1159     });
1160 
1161     cfg.skip_const(move |name| {
1162         match name {
1163             "SIG_DFL" | "SIG_ERR" | "SIG_IGN" => true, // sighandler_t weirdness
1164             "SIGUNUSED" => true,                       // removed in glibc 2.26
1165 
1166             // weird signed extension or something like that?
1167             "MS_NOUSER" => true,
1168             "MS_RMT_MASK" => true, // updated in glibc 2.22 and musl 1.1.13
1169             "BOTHER" => true,
1170             "GRND_RANDOM" | "GRND_INSECURE" | "GRND_NONBLOCK" => true, // netbsd 10 minimum
1171 
1172             _ => false,
1173         }
1174     });
1175 
1176     cfg.skip_fn(move |name| {
1177         match name {
1178             // FIXME: https://github.com/rust-lang/libc/issues/1272
1179             "execv" | "execve" | "execvp" => true,
1180             // FIXME: netbsd 10 minimum
1181             "getentropy" | "getrandom" => true,
1182 
1183             "getrlimit" | "getrlimit64" |    // non-int in 1st arg
1184             "setrlimit" | "setrlimit64" |    // non-int in 1st arg
1185             "prlimit" | "prlimit64" |        // non-int in 2nd arg
1186 
1187             _ => false,
1188         }
1189     });
1190 
1191     cfg.skip_field_type(move |struct_, field| {
1192         // This is a weird union, don't check the type.
1193         (struct_ == "ifaddrs" && field == "ifa_ifu") ||
1194         // sighandler_t type is super weird
1195         (struct_ == "sigaction" && field == "sa_sigaction") ||
1196         // sigval is actually a union, but we pretend it's a struct
1197         (struct_ == "sigevent" && field == "sigev_value") ||
1198         // aio_buf is "volatile void*" and Rust doesn't understand volatile
1199         (struct_ == "aiocb" && field == "aio_buf")
1200     });
1201 
1202     cfg.skip_field(|struct_, field| {
1203         match (struct_, field) {
1204             // conflicting with `p_type` macro from <resolve.h>.
1205             ("Elf32_Phdr", "p_type") => true,
1206             ("Elf64_Phdr", "p_type") => true,
1207             // pthread_spin_t is a volatile uchar
1208             ("pthread_spinlock_t", "pts_spin") => true,
1209             _ => false,
1210         }
1211     });
1212 
1213     cfg.generate("../src/lib.rs", "main.rs");
1214 }
1215 
1216 fn test_dragonflybsd(target: &str) {
1217     assert!(target.contains("dragonfly"));
1218     let mut cfg = ctest_cfg();
1219     cfg.flag("-Wno-deprecated-declarations");
1220 
1221     headers! {
1222         cfg:
1223         "aio.h",
1224         "ctype.h",
1225         "dirent.h",
1226         "dlfcn.h",
1227         "errno.h",
1228         "execinfo.h",
1229         "fcntl.h",
1230         "getopt.h",
1231         "glob.h",
1232         "grp.h",
1233         "ifaddrs.h",
1234         "kvm.h",
1235         "langinfo.h",
1236         "libgen.h",
1237         "limits.h",
1238         "link.h",
1239         "locale.h",
1240         "mqueue.h",
1241         "net/bpf.h",
1242         "net/if.h",
1243         "net/if_arp.h",
1244         "net/if_dl.h",
1245         "net/route.h",
1246         "netdb.h",
1247         "netinet/in.h",
1248         "netinet/ip.h",
1249         "netinet/tcp.h",
1250         "netinet/udp.h",
1251         "poll.h",
1252         "pthread.h",
1253         "pthread_np.h",
1254         "pwd.h",
1255         "regex.h",
1256         "resolv.h",
1257         "sched.h",
1258         "semaphore.h",
1259         "signal.h",
1260         "stddef.h",
1261         "stdint.h",
1262         "stdio.h",
1263         "stdlib.h",
1264         "string.h",
1265         "sys/event.h",
1266         "sys/file.h",
1267         "sys/ioctl.h",
1268         "sys/cpuctl.h",
1269         "sys/eui64.h",
1270         "sys/ipc.h",
1271         "sys/kinfo.h",
1272         "sys/ktrace.h",
1273         "sys/malloc.h",
1274         "sys/mman.h",
1275         "sys/mount.h",
1276         "sys/procctl.h",
1277         "sys/ptrace.h",
1278         "sys/resource.h",
1279         "sys/rtprio.h",
1280         "sys/sched.h",
1281         "sys/shm.h",
1282         "sys/socket.h",
1283         "sys/stat.h",
1284         "sys/statvfs.h",
1285         "sys/sysctl.h",
1286         "sys/time.h",
1287         "sys/times.h",
1288         "sys/timex.h",
1289         "sys/types.h",
1290         "sys/checkpoint.h",
1291         "sys/uio.h",
1292         "sys/un.h",
1293         "sys/utsname.h",
1294         "sys/wait.h",
1295         "syslog.h",
1296         "termios.h",
1297         "time.h",
1298         "ucontext.h",
1299         "unistd.h",
1300         "util.h",
1301         "utime.h",
1302         "utmpx.h",
1303         "vfs/ufs/quota.h",
1304         "vm/vm_map.h",
1305         "wchar.h",
1306         "iconv.h",
1307     }
1308 
1309     cfg.type_name(move |ty, is_struct, is_union| {
1310         match ty {
1311             // Just pass all these through, no need for a "struct" prefix
1312             "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr" | "Elf64_Phdr" | "Elf32_Shdr"
1313             | "Elf64_Shdr" | "Elf32_Sym" | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr"
1314             | "Elf32_Chdr" | "Elf64_Chdr" => ty.to_string(),
1315 
1316             // FIXME: OSX calls this something else
1317             "sighandler_t" => "sig_t".to_string(),
1318 
1319             t if is_union => format!("union {}", t),
1320 
1321             t if t.ends_with("_t") => t.to_string(),
1322 
1323             // sigval is a struct in Rust, but a union in C:
1324             "sigval" => format!("union sigval"),
1325 
1326             // put `struct` in front of all structs:.
1327             t if is_struct => format!("struct {}", t),
1328 
1329             t => t.to_string(),
1330         }
1331     });
1332 
1333     cfg.field_name(move |struct_, field| {
1334         match field {
1335             // Our stat *_nsec fields normally don't actually exist but are part
1336             // of a timeval struct
1337             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
1338                 s.replace("e_nsec", ".tv_nsec")
1339             }
1340             "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
1341             // Field is named `type` in C but that is a Rust keyword,
1342             // so these fields are translated to `type_` in the bindings.
1343             "type_" if struct_ == "rtprio" => "type".to_string(),
1344             s => s.to_string(),
1345         }
1346     });
1347 
1348     cfg.skip_type(move |ty| {
1349         match ty {
1350             // sighandler_t is crazy across platforms
1351             "sighandler_t" => true,
1352 
1353             _ => false,
1354         }
1355     });
1356 
1357     cfg.skip_struct(move |ty| {
1358         if ty.starts_with("__c_anonymous_") {
1359             return true;
1360         }
1361         match ty {
1362             // FIXME: These are tested as part of the linux_fcntl tests since
1363             // there are header conflicts when including them with all the other
1364             // structs.
1365             "termios2" => true,
1366 
1367             _ => false,
1368         }
1369     });
1370 
1371     cfg.skip_signededness(move |c| {
1372         match c {
1373             "LARGE_INTEGER" | "float" | "double" => true,
1374             // uuid_t is a struct, not an integer.
1375             "uuid_t" => true,
1376             n if n.starts_with("pthread") => true,
1377             // sem_t is a struct or pointer
1378             "sem_t" => true,
1379             // mqd_t is a pointer on DragonFly
1380             "mqd_t" => true,
1381 
1382             _ => false,
1383         }
1384     });
1385 
1386     cfg.skip_const(move |name| {
1387         match name {
1388             "SIG_DFL" | "SIG_ERR" | "SIG_IGN" => true, // sighandler_t weirdness
1389 
1390             // weird signed extension or something like that?
1391             "MS_NOUSER" => true,
1392             "MS_RMT_MASK" => true, // updated in glibc 2.22 and musl 1.1.13
1393 
1394             // These are defined for Solaris 11, but the crate is tested on
1395             // illumos, where they are currently not defined
1396             "EADI" | "PORT_SOURCE_POSTWAIT" | "PORT_SOURCE_SIGNAL" | "PTHREAD_STACK_MIN" => true,
1397 
1398             _ => false,
1399         }
1400     });
1401 
1402     cfg.skip_fn(move |name| {
1403         // skip those that are manually verified
1404         match name {
1405             // FIXME: https://github.com/rust-lang/libc/issues/1272
1406             "execv" | "execve" | "execvp" | "fexecve" => true,
1407 
1408             "getrlimit" | "getrlimit64" |    // non-int in 1st arg
1409             "setrlimit" | "setrlimit64" |    // non-int in 1st arg
1410             "prlimit" | "prlimit64"        // non-int in 2nd arg
1411              => true,
1412 
1413             _ => false,
1414         }
1415     });
1416 
1417     cfg.skip_field_type(move |struct_, field| {
1418         // This is a weird union, don't check the type.
1419         (struct_ == "ifaddrs" && field == "ifa_ifu") ||
1420         // sighandler_t type is super weird
1421         (struct_ == "sigaction" && field == "sa_sigaction") ||
1422         // sigval is actually a union, but we pretend it's a struct
1423         (struct_ == "sigevent" && field == "sigev_value") ||
1424         // aio_buf is "volatile void*" and Rust doesn't understand volatile
1425         (struct_ == "aiocb" && field == "aio_buf")
1426     });
1427 
1428     cfg.skip_field(move |struct_, field| {
1429         // this is actually a union on linux, so we can't represent it well and
1430         // just insert some padding.
1431         (struct_ == "siginfo_t" && field == "_pad") ||
1432         // sigev_notify_thread_id is actually part of a sigev_un union
1433         (struct_ == "sigevent" && field == "sigev_notify_thread_id")
1434     });
1435 
1436     cfg.generate("../src/lib.rs", "main.rs");
1437 }
1438 
1439 fn test_wasi(target: &str) {
1440     assert!(target.contains("wasi"));
1441 
1442     let mut cfg = ctest_cfg();
1443     cfg.define("_GNU_SOURCE", None);
1444 
1445     headers! { cfg:
1446         "ctype.h",
1447         "dirent.h",
1448         "errno.h",
1449         "fcntl.h",
1450         "limits.h",
1451         "locale.h",
1452         "malloc.h",
1453         "poll.h",
1454         "sched.h",
1455         "stdbool.h",
1456         "stddef.h",
1457         "stdint.h",
1458         "stdio.h",
1459         "stdlib.h",
1460         "string.h",
1461         "sys/resource.h",
1462         "sys/select.h",
1463         "sys/socket.h",
1464         "sys/stat.h",
1465         "sys/times.h",
1466         "sys/types.h",
1467         "sys/uio.h",
1468         "sys/utsname.h",
1469         "sys/ioctl.h",
1470         "time.h",
1471         "unistd.h",
1472         "wasi/api.h",
1473         "wasi/libc.h",
1474         "wasi/libc-find-relpath.h",
1475         "wasi/libc-nocwd.h",
1476         "wchar.h",
1477     }
1478 
1479     cfg.type_name(move |ty, is_struct, is_union| match ty {
1480         "FILE" | "fd_set" | "DIR" => ty.to_string(),
1481         t if is_union => format!("union {}", t),
1482         t if t.starts_with("__wasi") && t.ends_with("_u") => format!("union {}", t),
1483         t if t.starts_with("__wasi") && is_struct => format!("struct {}", t),
1484         t if t.ends_with("_t") => t.to_string(),
1485         t if is_struct => format!("struct {}", t),
1486         t => t.to_string(),
1487     });
1488 
1489     cfg.field_name(move |_struct, field| {
1490         match field {
1491             // deal with fields as rust keywords
1492             "type_" => "type".to_string(),
1493             s => s.to_string(),
1494         }
1495     });
1496 
1497     // Looks like LLD doesn't merge duplicate imports, so if the Rust
1498     // code imports from a module and the C code also imports from a
1499     // module we end up with two imports of function pointers which
1500     // import the same thing but have different function pointers
1501     cfg.skip_fn_ptrcheck(|f| f.starts_with("__wasi"));
1502 
1503     // d_name is declared as a flexible array in WASI libc, so it
1504     // doesn't support sizeof.
1505     cfg.skip_field(|s, field| s == "dirent" && field == "d_name");
1506 
1507     // Currently Rust/clang disagree on function argument ABI, so skip these
1508     // tests. For more info see WebAssembly/tool-conventions#88
1509     cfg.skip_roundtrip(|_| true);
1510 
1511     cfg.generate("../src/lib.rs", "main.rs");
1512 }
1513 
1514 fn test_android(target: &str) {
1515     assert!(target.contains("android"));
1516     let target_pointer_width = match target {
1517         t if t.contains("aarch64") || t.contains("x86_64") => 64,
1518         t if t.contains("i686") || t.contains("arm") => 32,
1519         t => panic!("unsupported target: {}", t),
1520     };
1521     let x86 = target.contains("i686") || target.contains("x86_64");
1522 
1523     let mut cfg = ctest_cfg();
1524     cfg.define("_GNU_SOURCE", None);
1525 
1526     headers! { cfg:
1527                "arpa/inet.h",
1528                "ctype.h",
1529                "dirent.h",
1530                "dlfcn.h",
1531                "elf.h",
1532                "errno.h",
1533                "fcntl.h",
1534                "getopt.h",
1535                "grp.h",
1536                "ifaddrs.h",
1537                "libgen.h",
1538                "limits.h",
1539                "link.h",
1540                "locale.h",
1541                "malloc.h",
1542                "net/ethernet.h",
1543                "net/if.h",
1544                "net/if_arp.h",
1545                "net/route.h",
1546                "netdb.h",
1547                "netinet/in.h",
1548                "netinet/ip.h",
1549                "netinet/tcp.h",
1550                "netinet/udp.h",
1551                "netpacket/packet.h",
1552                "poll.h",
1553                "pthread.h",
1554                "pty.h",
1555                "pwd.h",
1556                "regex.h",
1557                "resolv.h",
1558                "sched.h",
1559                "semaphore.h",
1560                "signal.h",
1561                "stddef.h",
1562                "stdint.h",
1563                "stdio.h",
1564                "stdlib.h",
1565                "string.h",
1566                "sys/auxv.h",
1567                "sys/epoll.h",
1568                "sys/eventfd.h",
1569                "sys/file.h",
1570                "sys/fsuid.h",
1571                "sys/inotify.h",
1572                "sys/ioctl.h",
1573                "sys/mman.h",
1574                "sys/mount.h",
1575                "sys/personality.h",
1576                "sys/prctl.h",
1577                "sys/ptrace.h",
1578                "sys/random.h",
1579                "sys/reboot.h",
1580                "sys/resource.h",
1581                "sys/sendfile.h",
1582                "sys/signalfd.h",
1583                "sys/socket.h",
1584                "sys/stat.h",
1585                "sys/statvfs.h",
1586                "sys/swap.h",
1587                "sys/syscall.h",
1588                "sys/sysinfo.h",
1589                "sys/system_properties.h",
1590                "sys/time.h",
1591                "sys/timerfd.h",
1592                "sys/times.h",
1593                "sys/types.h",
1594                "sys/ucontext.h",
1595                "sys/uio.h",
1596                "sys/un.h",
1597                "sys/user.h",
1598                "sys/utsname.h",
1599                "sys/vfs.h",
1600                "sys/xattr.h",
1601                "sys/wait.h",
1602                "syslog.h",
1603                "termios.h",
1604                "time.h",
1605                "unistd.h",
1606                "utime.h",
1607                "utmp.h",
1608                "wchar.h",
1609                "xlocale.h",
1610                // time64_t is not defined for 64-bit targets If included it will
1611                // generate the error 'Your time_t is already 64-bit'
1612                [target_pointer_width == 32]: "time64.h",
1613                [x86]: "sys/reg.h",
1614     }
1615 
1616     // Include linux headers at the end:
1617     headers! { cfg:
1618                 "asm/mman.h",
1619                 "linux/auxvec.h",
1620                 "linux/dccp.h",
1621                 "linux/elf.h",
1622                 "linux/errqueue.h",
1623                 "linux/falloc.h",
1624                 "linux/filter.h",
1625                 "linux/futex.h",
1626                 "linux/fs.h",
1627                 "linux/genetlink.h",
1628                 "linux/if_alg.h",
1629                 "linux/if_addr.h",
1630                 "linux/if_ether.h",
1631                 "linux/if_link.h",
1632                 "linux/rtnetlink.h",
1633                 "linux/if_tun.h",
1634                 "linux/kexec.h",
1635                 "linux/magic.h",
1636                 "linux/membarrier.h",
1637                 "linux/memfd.h",
1638                 "linux/mempolicy.h",
1639                 "linux/module.h",
1640                 "linux/mount.h",
1641                 "linux/net_tstamp.h",
1642                 "linux/netfilter/nfnetlink.h",
1643                 "linux/netfilter/nfnetlink_log.h",
1644                 "linux/netfilter/nfnetlink_queue.h",
1645                 "linux/netfilter/nf_tables.h",
1646                 "linux/netfilter_ipv4.h",
1647                 "linux/netfilter_ipv6.h",
1648                 "linux/netfilter_ipv6/ip6_tables.h",
1649                 "linux/netlink.h",
1650                 "linux/quota.h",
1651                 "linux/reboot.h",
1652                 "linux/seccomp.h",
1653                 "linux/sched.h",
1654                 "linux/sockios.h",
1655                 "linux/uinput.h",
1656                 "linux/vm_sockets.h",
1657                 "linux/wait.h",
1658 
1659     }
1660 
1661     // Include Android-specific headers:
1662     headers! { cfg:
1663                 "android/set_abort_message.h"
1664     }
1665 
1666     cfg.type_name(move |ty, is_struct, is_union| {
1667         match ty {
1668             // Just pass all these through, no need for a "struct" prefix
1669             "FILE" | "fd_set" | "Dl_info" | "Elf32_Phdr" | "Elf64_Phdr" => ty.to_string(),
1670 
1671             t if is_union => format!("union {}", t),
1672 
1673             t if t.ends_with("_t") => t.to_string(),
1674 
1675             // sigval is a struct in Rust, but a union in C:
1676             "sigval" => format!("union sigval"),
1677 
1678             // put `struct` in front of all structs:.
1679             t if is_struct => format!("struct {}", t),
1680 
1681             t => t.to_string(),
1682         }
1683     });
1684 
1685     cfg.field_name(move |struct_, field| {
1686         match field {
1687             // Our stat *_nsec fields normally don't actually exist but are part
1688             // of a timeval struct
1689             s if s.ends_with("_nsec") && struct_.starts_with("stat") => s.to_string(),
1690             // FIXME: appears that `epoll_event.data` is an union
1691             "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
1692             // The following structs have a field called `type` in C,
1693             // but `type` is a Rust keyword, so these fields are translated
1694             // to `type_` in Rust.
1695             "type_"
1696                 if struct_ == "input_event"
1697                     || struct_ == "input_mask"
1698                     || struct_ == "ff_effect" =>
1699             {
1700                 "type".to_string()
1701             }
1702 
1703             s => s.to_string(),
1704         }
1705     });
1706 
1707     cfg.skip_type(move |ty| {
1708         match ty {
1709             // FIXME: `sighandler_t` type is incorrect, see:
1710             // https://github.com/rust-lang/libc/issues/1359
1711             "sighandler_t" => true,
1712 
1713             // These are tested in the `linux_elf.rs` file.
1714             "Elf64_Phdr" | "Elf32_Phdr" => true,
1715             _ => false,
1716         }
1717     });
1718 
1719     cfg.skip_struct(move |ty| {
1720         if ty.starts_with("__c_anonymous_") {
1721             return true;
1722         }
1723         match ty {
1724             // These are tested as part of the linux_fcntl tests since there are
1725             // header conflicts when including them with all the other structs.
1726             "termios2" => true,
1727             // uc_sigmask and uc_sigmask64 of ucontext_t are an anonymous union
1728             "ucontext_t" => true,
1729             // 'private' type
1730             "prop_info" => true,
1731 
1732             // These are tested in the `linux_elf.rs` file.
1733             "Elf64_Phdr" | "Elf32_Phdr" => true,
1734 
1735             _ => false,
1736         }
1737     });
1738 
1739     cfg.skip_const(move |name| {
1740         match name {
1741             // The IPV6 constants are tested in the `linux_ipv6.rs` tests:
1742             | "IPV6_FLOWINFO"
1743             | "IPV6_FLOWLABEL_MGR"
1744             | "IPV6_FLOWINFO_SEND"
1745             | "IPV6_FLOWINFO_FLOWLABEL"
1746             | "IPV6_FLOWINFO_PRIORITY"
1747             // The F_ fnctl constants are tested in the `linux_fnctl.rs` tests:
1748             | "F_CANCELLK"
1749             | "F_ADD_SEALS"
1750             | "F_GET_SEALS"
1751             | "F_SEAL_SEAL"
1752             | "F_SEAL_SHRINK"
1753             | "F_SEAL_GROW"
1754             | "F_SEAL_WRITE" => true,
1755 
1756             // The `ARPHRD_CAN` is tested in the `linux_if_arp.rs` tests:
1757             "ARPHRD_CAN" => true,
1758 
1759             // FIXME: deprecated: not available in any header
1760             // See: https://github.com/rust-lang/libc/issues/1356
1761             "ENOATTR" => true,
1762 
1763             // FIXME: still necessary?
1764             "SIG_DFL" | "SIG_ERR" | "SIG_IGN" => true, // sighandler_t weirdness
1765             // FIXME: deprecated - removed in glibc 2.26
1766             "SIGUNUSED" => true,
1767 
1768             // Needs a newer Android SDK for the definition
1769             "P_PIDFD" => true,
1770 
1771             // Requires Linux kernel 5.6
1772             "VMADDR_CID_LOCAL" => true,
1773 
1774             // FIXME: conflicts with standard C headers and is tested in
1775             // `linux_termios.rs` below:
1776             "BOTHER" => true,
1777             "IBSHIFT" => true,
1778             "TCGETS2" | "TCSETS2" | "TCSETSW2" | "TCSETSF2" => true,
1779 
1780             // is a private value for kernel usage normally
1781             "FUSE_SUPER_MAGIC" => true,
1782             // linux 5.12 min
1783             "MPOL_F_NUMA_BALANCING" => true,
1784 
1785             // GRND_INSECURE was added in platform-tools-30.0.0
1786             "GRND_INSECURE" => true,
1787 
1788             // kernel 5.10 minimum required
1789             "MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ" | "MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ" => true,
1790 
1791             _ => false,
1792         }
1793     });
1794 
1795     cfg.skip_fn(move |name| {
1796         // skip those that are manually verified
1797         match name {
1798             // FIXME: https://github.com/rust-lang/libc/issues/1272
1799             "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
1800 
1801             // There are two versions of the sterror_r function, see
1802             //
1803             // https://linux.die.net/man/3/strerror_r
1804             //
1805             // An XSI-compliant version provided if:
1806             //
1807             // (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && ! _GNU_SOURCE
1808             //
1809             // and a GNU specific version provided if _GNU_SOURCE is defined.
1810             //
1811             // libc provides bindings for the XSI-compliant version, which is
1812             // preferred for portable applications.
1813             //
1814             // We skip the test here since here _GNU_SOURCE is defined, and
1815             // test the XSI version below.
1816             "strerror_r" => true,
1817             "reallocarray" => true,
1818             "__system_property_wait" => true,
1819 
1820             // Added in API level 30, but tests use level 28.
1821             "mlock2" => true,
1822 
1823             // Added in glibc 2.25.
1824             "getentropy" => true,
1825 
1826             // Added in API level 28, but some tests use level 24.
1827             "getrandom" => true,
1828 
1829             // Added in API level 28, but some tests use level 24.
1830             "syncfs" => true,
1831 
1832             _ => false,
1833         }
1834     });
1835 
1836     cfg.skip_field_type(move |struct_, field| {
1837         // This is a weird union, don't check the type.
1838         (struct_ == "ifaddrs" && field == "ifa_ifu") ||
1839         // sigval is actually a union, but we pretend it's a struct
1840         (struct_ == "sigevent" && field == "sigev_value") ||
1841         // this one is an anonymous union
1842         (struct_ == "ff_effect" && field == "u") ||
1843         // FIXME: `sa_sigaction` has type `sighandler_t` but that type is
1844         // incorrect, see: https://github.com/rust-lang/libc/issues/1359
1845         (struct_ == "sigaction" && field == "sa_sigaction") ||
1846         // signalfd had SIGSYS fields added in Android 4.19, but CI does not have that version yet.
1847         (struct_ == "signalfd_siginfo" && field == "ssi_call_addr")
1848     });
1849 
1850     cfg.skip_field(move |struct_, field| {
1851         // this is actually a union on linux, so we can't represent it well and
1852         // just insert some padding.
1853         (struct_ == "siginfo_t" && field == "_pad") ||
1854         // FIXME: `sa_sigaction` has type `sighandler_t` but that type is
1855         // incorrect, see: https://github.com/rust-lang/libc/issues/1359
1856         (struct_ == "sigaction" && field == "sa_sigaction") ||
1857         // sigev_notify_thread_id is actually part of a sigev_un union
1858         (struct_ == "sigevent" && field == "sigev_notify_thread_id") ||
1859         // signalfd had SIGSYS fields added in Android 4.19, but CI does not have that version yet.
1860         (struct_ == "signalfd_siginfo" && (field == "ssi_syscall" ||
1861                                            field == "ssi_call_addr" ||
1862                                            field == "ssi_arch"))
1863     });
1864 
1865     cfg.skip_field(|struct_, field| {
1866         match (struct_, field) {
1867             // conflicting with `p_type` macro from <resolve.h>.
1868             ("Elf32_Phdr", "p_type") => true,
1869             ("Elf64_Phdr", "p_type") => true,
1870 
1871             // this is actually a union on linux, so we can't represent it well and
1872             // just insert some padding.
1873             ("siginfo_t", "_pad") => true,
1874 
1875             _ => false,
1876         }
1877     });
1878 
1879     cfg.generate("../src/lib.rs", "main.rs");
1880 
1881     test_linux_like_apis(target);
1882 }
1883 
1884 fn test_freebsd(target: &str) {
1885     assert!(target.contains("freebsd"));
1886     let mut cfg = ctest_cfg();
1887 
1888     let freebsd_ver = which_freebsd();
1889 
1890     match freebsd_ver {
1891         Some(12) => cfg.cfg("freebsd12", None),
1892         Some(13) => cfg.cfg("freebsd13", None),
1893         Some(14) => cfg.cfg("freebsd14", None),
1894         _ => &mut cfg,
1895     };
1896 
1897     // For sched linux compat fn
1898     cfg.define("_WITH_CPU_SET_T", None);
1899     // Required for `getline`:
1900     cfg.define("_WITH_GETLINE", None);
1901     // Required for making freebsd11_stat available in the headers
1902     cfg.define("_WANT_FREEBSD11_STAT", None);
1903 
1904     let freebsd13 = match freebsd_ver {
1905         Some(n) if n >= 13 => true,
1906         _ => false,
1907     };
1908 
1909     headers! { cfg:
1910                 "aio.h",
1911                 "arpa/inet.h",
1912                 "bsm/audit.h",
1913                 "ctype.h",
1914                 "dirent.h",
1915                 "dlfcn.h",
1916                 "elf.h",
1917                 "errno.h",
1918                 "execinfo.h",
1919                 "fcntl.h",
1920                 "getopt.h",
1921                 "glob.h",
1922                 "grp.h",
1923                 "iconv.h",
1924                 "ifaddrs.h",
1925                 "langinfo.h",
1926                 "libgen.h",
1927                 "libutil.h",
1928                 "limits.h",
1929                 "link.h",
1930                 "locale.h",
1931                 "machine/elf.h",
1932                 "machine/reg.h",
1933                 "malloc_np.h",
1934                 "memstat.h",
1935                 "mqueue.h",
1936                 "net/bpf.h",
1937                 "net/if.h",
1938                 "net/if_arp.h",
1939                 "net/if_dl.h",
1940                 "net/if_mib.h",
1941                 "net/route.h",
1942                 "netdb.h",
1943                 "netinet/ip.h",
1944                 "netinet/in.h",
1945                 "netinet/sctp.h",
1946                 "netinet/tcp.h",
1947                 "netinet/udp.h",
1948                 "poll.h",
1949                 "pthread.h",
1950                 "pthread_np.h",
1951                 "pwd.h",
1952                 "regex.h",
1953                 "resolv.h",
1954                 "sched.h",
1955                 "semaphore.h",
1956                 "signal.h",
1957                 "spawn.h",
1958                 "stddef.h",
1959                 "stdint.h",
1960                 "stdio.h",
1961                 "stdlib.h",
1962                 "string.h",
1963                 "sys/capsicum.h",
1964                 "sys/auxv.h",
1965                 "sys/cpuset.h",
1966                 "sys/domainset.h",
1967                 "sys/eui64.h",
1968                 "sys/event.h",
1969                 [freebsd13]:"sys/eventfd.h",
1970                 "sys/extattr.h",
1971                 "sys/file.h",
1972                 "sys/ioctl.h",
1973                 "sys/ipc.h",
1974                 "sys/jail.h",
1975                 "sys/mman.h",
1976                 "sys/mount.h",
1977                 "sys/msg.h",
1978                 "sys/procctl.h",
1979                 "sys/procdesc.h",
1980                 "sys/ptrace.h",
1981                 "sys/queue.h",
1982                 "sys/random.h",
1983                 "sys/resource.h",
1984                 "sys/rtprio.h",
1985                 "sys/sem.h",
1986                 "sys/shm.h",
1987                 "sys/socket.h",
1988                 "sys/stat.h",
1989                 "sys/statvfs.h",
1990                 "sys/sysctl.h",
1991                 "sys/thr.h",
1992                 "sys/time.h",
1993                 "sys/times.h",
1994                 "sys/timex.h",
1995                 "sys/types.h",
1996                 "sys/proc.h",
1997                 "kvm.h", // must be after "sys/types.h"
1998                 "sys/ucontext.h",
1999                 "sys/uio.h",
2000                 "sys/ktrace.h",
2001                 "sys/umtx.h",
2002                 "sys/un.h",
2003                 "sys/user.h",
2004                 "sys/utsname.h",
2005                 "sys/uuid.h",
2006                 "sys/vmmeter.h",
2007                 "sys/wait.h",
2008                 "libprocstat.h",
2009                 "devstat.h",
2010                 "syslog.h",
2011                 "termios.h",
2012                 "time.h",
2013                 "ufs/ufs/quota.h",
2014                 "unistd.h",
2015                 "utime.h",
2016                 "utmpx.h",
2017                 "wchar.h",
2018     }
2019 
2020     cfg.type_name(move |ty, is_struct, is_union| {
2021         match ty {
2022             // Just pass all these through, no need for a "struct" prefix
2023             "FILE"
2024             | "fd_set"
2025             | "Dl_info"
2026             | "DIR"
2027             | "Elf32_Phdr"
2028             | "Elf64_Phdr"
2029             | "Elf32_Auxinfo"
2030             | "Elf64_Auxinfo"
2031             | "devstat_select_mode"
2032             | "devstat_support_flags"
2033             | "devstat_type_flags"
2034             | "devstat_match_flags"
2035             | "devstat_priority" => ty.to_string(),
2036 
2037             // FIXME: https://github.com/rust-lang/libc/issues/1273
2038             "sighandler_t" => "sig_t".to_string(),
2039 
2040             t if is_union => format!("union {}", t),
2041 
2042             t if t.ends_with("_t") => t.to_string(),
2043 
2044             // sigval is a struct in Rust, but a union in C:
2045             "sigval" => format!("union sigval"),
2046 
2047             // put `struct` in front of all structs:.
2048             t if is_struct => format!("struct {}", t),
2049 
2050             t => t.to_string(),
2051         }
2052     });
2053 
2054     cfg.field_name(move |struct_, field| {
2055         match field {
2056             // Our stat *_nsec fields normally don't actually exist but are part
2057             // of a timeval struct
2058             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
2059                 s.replace("e_nsec", ".tv_nsec")
2060             }
2061             // Field is named `type` in C but that is a Rust keyword,
2062             // so these fields are translated to `type_` in the bindings.
2063             "type_" if struct_ == "rtprio" => "type".to_string(),
2064             "type_" if struct_ == "sockstat" => "type".to_string(),
2065             "type_" if struct_ == "devstat_match_table" => "type".to_string(),
2066             s => s.to_string(),
2067         }
2068     });
2069 
2070     cfg.skip_const(move |name| {
2071         match name {
2072             // These constants were introduced in FreeBSD 13:
2073             "F_ADD_SEALS" | "F_GET_SEALS" | "F_SEAL_SEAL" | "F_SEAL_SHRINK" | "F_SEAL_GROW"
2074             | "F_SEAL_WRITE"
2075                 if Some(13) > freebsd_ver =>
2076             {
2077                 true
2078             }
2079 
2080             // These constants were introduced in FreeBSD 13:
2081             "EFD_CLOEXEC" | "EFD_NONBLOCK" | "EFD_SEMAPHORE" if Some(13) > freebsd_ver => true,
2082 
2083             // These constants were introduced in FreeBSD 12:
2084             "AT_RESOLVE_BENEATH" | "O_RESOLVE_BENEATH" if Some(12) > freebsd_ver => true,
2085 
2086             // These constants were introduced in FreeBSD 13:
2087             "O_DSYNC" | "O_PATH" | "O_EMPTY_PATH" | "AT_EMPTY_PATH" if Some(13) > freebsd_ver => {
2088                 true
2089             }
2090 
2091             // These aliases were introduced in FreeBSD 13:
2092             // (note however that the constants themselves work on any version)
2093             "CLOCK_BOOTTIME" | "CLOCK_REALTIME_COARSE" | "CLOCK_MONOTONIC_COARSE"
2094                 if Some(13) > freebsd_ver =>
2095             {
2096                 true
2097             }
2098 
2099             // FIXME: These are deprecated - remove in a couple of releases.
2100             // These constants were removed in FreeBSD 11 (svn r273250) but will
2101             // still be accepted and ignored at runtime.
2102             "MAP_RENAME" | "MAP_NORESERVE" => true,
2103 
2104             // FIXME: These are deprecated - remove in a couple of releases.
2105             // These constants were removed in FreeBSD 11 (svn r262489),
2106             // and they've never had any legitimate use outside of the
2107             // base system anyway.
2108             "CTL_MAXID" | "KERN_MAXID" | "HW_MAXID" | "USER_MAXID" => true,
2109 
2110             // FIXME: This is deprecated - remove in a couple of releases.
2111             // This was removed in FreeBSD 14 (git 1b4701fe1e8) and never
2112             // should've been used anywhere anyway.
2113             "TDF_UNUSED23" => true,
2114 
2115             // FIXME: These are deprecated - remove in a couple of releases.
2116             // These symbols are not stable across OS-versions.  They were
2117             // changed for FreeBSD 14 in git revisions b62848b0c3f and
2118             // 2cf7870864e.
2119             "PRI_MAX_ITHD" | "PRI_MIN_REALTIME" | "PRI_MAX_REALTIME" | "PRI_MIN_KERN"
2120             | "PRI_MAX_KERN" | "PSWP" | "PVM" | "PINOD" | "PRIBIO" | "PVFS" | "PZERO" | "PSOCK"
2121             | "PWAIT" | "PLOCK" | "PPAUSE" | "PRI_MIN_TIMESHARE" | "PUSER" | "PI_AV" | "PI_NET"
2122             | "PI_DISK" | "PI_TTY" | "PI_DULL" | "PI_SOFT" => true,
2123 
2124             // This symbol changed in FreeBSD 14 (git 051e7d78b03), but the new
2125             // version should be safe to use on older releases.
2126             "IFCAP_CANTCHANGE" => true,
2127 
2128             // These were removed in FreeBSD 14 (git c6d31b8306e)
2129             "TDF_ASTPENDING" | "TDF_NEEDSUSPCHK" | "TDF_NEEDRESCHED" | "TDF_NEEDSIGCHK"
2130             | "TDF_ALRMPEND" | "TDF_PROFPEND" | "TDF_MACPEND" => true,
2131 
2132             // This constant was removed in FreeBSD 13 (svn r363622), and never
2133             // had any legitimate use outside of the base system anyway.
2134             "CTL_P1003_1B_MAXID" => true,
2135 
2136             // This was renamed in FreeBSD 12.2 and 13 (r352486).
2137             "CTL_UNSPEC" | "CTL_SYSCTL" => true,
2138 
2139             // This was renamed in FreeBSD 12.2 and 13 (r350749).
2140             "IPPROTO_SEP" | "IPPROTO_DCCP" => true,
2141 
2142             // This was changed to 96(0x60) in FreeBSD 13:
2143             // https://github.com/freebsd/freebsd/
2144             // commit/06b00ceaa914a3907e4e27bad924f44612bae1d7
2145             "MINCORE_SUPER" if Some(13) <= freebsd_ver => true,
2146 
2147             // Added in FreeBSD 13.0 (r356667)
2148             "GRND_INSECURE" if Some(13) > freebsd_ver => true,
2149 
2150             // Added in FreeBSD 13.0 (r349609)
2151             "PROC_PROTMAX_CTL"
2152             | "PROC_PROTMAX_STATUS"
2153             | "PROC_PROTMAX_FORCE_ENABLE"
2154             | "PROC_PROTMAX_FORCE_DISABLE"
2155             | "PROC_PROTMAX_NOFORCE"
2156             | "PROC_PROTMAX_ACTIVE"
2157             | "PROC_NO_NEW_PRIVS_CTL"
2158             | "PROC_NO_NEW_PRIVS_STATUS"
2159             | "PROC_NO_NEW_PRIVS_ENABLE"
2160             | "PROC_NO_NEW_PRIVS_DISABLE"
2161             | "PROC_WXMAP_CTL"
2162             | "PROC_WXMAP_STATUS"
2163             | "PROC_WX_MAPPINGS_PERMIT"
2164             | "PROC_WX_MAPPINGS_DISALLOW_EXEC"
2165             | "PROC_WXORX_ENFORCE"
2166                 if Some(13) > freebsd_ver =>
2167             {
2168                 true
2169             }
2170 
2171             // Added in in FreeBSD 13.0 (r367776 and r367287)
2172             "SCM_CREDS2" | "LOCAL_CREDS_PERSISTENT" if Some(13) > freebsd_ver => true,
2173 
2174             // Added in FreeBSD 14
2175             "SPACECTL_DEALLOC" if Some(14) > freebsd_ver => true,
2176 
2177             // Added in FreeBSD 13.
2178             "KERN_PROC_SIGFASTBLK"
2179             | "USER_LOCALBASE"
2180             | "TDP_SIGFASTBLOCK"
2181             | "TDP_UIOHELD"
2182             | "TDP_SIGFASTPENDING"
2183             | "TDP2_COMPAT32RB"
2184             | "P2_PROTMAX_ENABLE"
2185             | "P2_PROTMAX_DISABLE"
2186             | "CTLFLAG_NEEDGIANT"
2187             | "CTL_SYSCTL_NEXTNOSKIP"
2188                 if Some(13) > freebsd_ver =>
2189             {
2190                 true
2191             }
2192 
2193             // Added in freebsd 14.
2194             "IFCAP_MEXTPG" if Some(14) > freebsd_ver => true,
2195             // Added in freebsd 13.
2196             "IFF_KNOWSEPOCH" | "IFCAP_TXTLS4" | "IFCAP_TXTLS6" | "IFCAP_VXLAN_HWCSUM"
2197             | "IFCAP_VXLAN_HWTSO" | "IFCAP_TXTLS_RTLMT" | "IFCAP_TXTLS"
2198                 if Some(13) > freebsd_ver =>
2199             {
2200                 true
2201             }
2202             // Added in FreeBSD 13.
2203             "PS_FST_TYPE_EVENTFD" if Some(13) > freebsd_ver => true,
2204 
2205             // Added in FreeBSD 14.
2206             "MNT_RECURSE" | "MNT_DEFERRED" if Some(14) > freebsd_ver => true,
2207 
2208             // Added in FreeBSD 13.
2209             "MNT_EXTLS" | "MNT_EXTLSCERT" | "MNT_EXTLSCERTUSER" | "MNT_NOCOVER"
2210             | "MNT_EMPTYDIR"
2211                 if Some(13) > freebsd_ver =>
2212             {
2213                 true
2214             }
2215 
2216             // Added in FreeBSD 14.
2217             "PT_COREDUMP" | "PC_ALL" | "PC_COMPRESS" | "PT_GETREGSET" | "PT_SETREGSET"
2218             | "PT_SC_REMOTE"
2219                 if Some(14) > freebsd_ver =>
2220             {
2221                 true
2222             }
2223 
2224             // Added in FreeBSD 14.
2225             "F_KINFO" => true, // FIXME: depends how frequent freebsd 14 is updated on CI, this addition went this week only.
2226             "SHM_RENAME_NOREPLACE"
2227             | "SHM_RENAME_EXCHANGE"
2228             | "SHM_LARGEPAGE_ALLOC_DEFAULT"
2229             | "SHM_LARGEPAGE_ALLOC_NOWAIT"
2230             | "SHM_LARGEPAGE_ALLOC_HARD"
2231             | "MFD_CLOEXEC"
2232             | "MFD_ALLOW_SEALING"
2233             | "MFD_HUGETLB"
2234             | "MFD_HUGE_MASK"
2235             | "MFD_HUGE_64KB"
2236             | "MFD_HUGE_512KB"
2237             | "MFD_HUGE_1MB"
2238             | "MFD_HUGE_2MB"
2239             | "MFD_HUGE_8MB"
2240             | "MFD_HUGE_16MB"
2241             | "MFD_HUGE_32MB"
2242             | "MFD_HUGE_256MB"
2243             | "MFD_HUGE_512MB"
2244             | "MFD_HUGE_1GB"
2245             | "MFD_HUGE_2GB"
2246             | "MFD_HUGE_16GB"
2247                 if Some(13) > freebsd_ver =>
2248             {
2249                 true
2250             }
2251 
2252             // Flags introduced in FreeBSD 14.
2253             "TCP_MAXUNACKTIME"
2254             | "TCP_MAXPEAKRATE"
2255             | "TCP_IDLE_REDUCE"
2256             | "TCP_REMOTE_UDP_ENCAPS_PORT"
2257             | "TCP_DELACK"
2258             | "TCP_FIN_IS_RST"
2259             | "TCP_LOG_LIMIT"
2260             | "TCP_SHARED_CWND_ALLOWED"
2261             | "TCP_PROC_ACCOUNTING"
2262             | "TCP_USE_CMP_ACKS"
2263             | "TCP_PERF_INFO"
2264             | "TCP_LRD"
2265                 if Some(14) > freebsd_ver =>
2266             {
2267                 true
2268             }
2269 
2270             // Added in FreeBSD 14
2271             "LIO_READV" | "LIO_WRITEV" | "LIO_VECTORED" if Some(14) > freebsd_ver => true,
2272 
2273             // Added in FreeBSD 13
2274             "FIOSSHMLPGCNF" if Some(13) > freebsd_ver => true,
2275 
2276             // Added in FreeBSD 14
2277             "IFCAP_NV" if Some(14) > freebsd_ver => true,
2278 
2279             // Removed in https://reviews.freebsd.org/D38574 and https://reviews.freebsd.org/D38822
2280             // We maybe should deprecate them once a stable release ships them.
2281             "IP_BINDMULTI" | "IP_RSS_LISTEN_BUCKET" => true,
2282 
2283             _ => false,
2284         }
2285     });
2286 
2287     cfg.skip_type(move |ty| {
2288         match ty {
2289             // the struct "__kvm" is quite tricky to bind so since we only use a pointer to it
2290             // for now, it doesn't matter too much...
2291             "kvm_t" => true,
2292 
2293             _ => false,
2294         }
2295     });
2296 
2297     cfg.skip_struct(move |ty| {
2298         if ty.starts_with("__c_anonymous_") {
2299             return true;
2300         }
2301         match ty {
2302             // `procstat` is a private struct
2303             "procstat" => true,
2304 
2305             // `spacectl_range` was introduced in FreeBSD 14
2306             "spacectl_range" if Some(14) > freebsd_ver => true,
2307 
2308             // `ptrace_coredump` introduced in FreeBSD 14.
2309             "ptrace_coredump" if Some(14) > freebsd_ver => true,
2310             // `ptrace_sc_remote` introduced in FreeBSD 14.
2311             "ptrace_sc_remote" if Some(14) > freebsd_ver => true,
2312 
2313             // `sockcred2` is not available in FreeBSD 12.
2314             "sockcred2" if Some(13) > freebsd_ver => true,
2315             // `shm_largepage_conf` was introduced in FreeBSD 13.
2316             "shm_largepage_conf" if Some(13) > freebsd_ver => true,
2317 
2318             // Those are private types
2319             "memory_type" => true,
2320             "memory_type_list" => true,
2321             "pidfh" => true,
2322             "sctp_gen_error_cause"
2323             | "sctp_error_missing_param"
2324             | "sctp_remote_error"
2325             | "sctp_assoc_change"
2326             | "sctp_send_failed_event"
2327             | "sctp_stream_reset_event" => true,
2328 
2329             _ => false,
2330         }
2331     });
2332 
2333     cfg.skip_fn(move |name| {
2334         // skip those that are manually verified
2335         match name {
2336             // FIXME: https://github.com/rust-lang/libc/issues/1272
2337             "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
2338 
2339             // The `uname` function in the `utsname.h` FreeBSD header is a C
2340             // inline function (has no symbol) that calls the `__xuname` symbol.
2341             // Therefore the function pointer comparison does not make sense for it.
2342             "uname" => true,
2343 
2344             // FIXME: Our API is unsound. The Rust API allows aliasing
2345             // pointers, but the C API requires pointers not to alias.
2346             // We should probably be at least using `&`/`&mut` here, see:
2347             // https://github.com/gnzlbg/ctest/issues/68
2348             "lio_listio" => true,
2349 
2350             // Those are introduced in FreeBSD 12.
2351             "clock_nanosleep" | "getrandom" | "elf_aux_info" | "setproctitle_fast"
2352             | "timingsafe_bcmp" | "timingsafe_memcmp"
2353                 if Some(12) > freebsd_ver =>
2354             {
2355                 true
2356             }
2357 
2358             // Those are introduced in FreeBSD 13.
2359             "memfd_create"
2360             | "shm_create_largepage"
2361             | "shm_rename"
2362             | "getentropy"
2363             | "eventfd"
2364             | "SOCKCRED2SIZE"
2365             | "getlocalbase"
2366             | "aio_readv"
2367             | "aio_writev"
2368             | "copy_file_range"
2369                 if Some(13) > freebsd_ver =>
2370             {
2371                 true
2372             }
2373 
2374             // Those are introduced in FreeBSD 14.
2375             "sched_getaffinity" | "sched_setaffinity" | "sched_getcpu" | "fspacectl"
2376                 if Some(14) > freebsd_ver =>
2377             {
2378                 true
2379             }
2380 
2381             _ => false,
2382         }
2383     });
2384 
2385     cfg.volatile_item(|i| {
2386         use ctest::VolatileItemKind::*;
2387         match i {
2388             // aio_buf is a volatile void** but since we cannot express that in
2389             // Rust types, we have to explicitly tell the checker about it here:
2390             StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => true,
2391             _ => false,
2392         }
2393     });
2394 
2395     cfg.skip_field(move |struct_, field| {
2396         match (struct_, field) {
2397             // FIXME: `sa_sigaction` has type `sighandler_t` but that type is
2398             // incorrect, see: https://github.com/rust-lang/libc/issues/1359
2399             ("sigaction", "sa_sigaction") => true,
2400 
2401             // conflicting with `p_type` macro from <resolve.h>.
2402             ("Elf32_Phdr", "p_type") => true,
2403             ("Elf64_Phdr", "p_type") => true,
2404 
2405             // not available until FreeBSD 12, and is an anonymous union there.
2406             ("xucred", "cr_pid__c_anonymous_union") => true,
2407 
2408             // m_owner field is a volatile __lwpid_t
2409             ("umutex", "m_owner") => true,
2410             // c_has_waiters field is a volatile int32_t
2411             ("ucond", "c_has_waiters") => true,
2412             // is PATH_MAX long but tests can't accept multi array as equivalent.
2413             ("kinfo_vmentry", "kve_path") => true,
2414 
2415             // a_un field is a union
2416             ("Elf32_Auxinfo", "a_un") => true,
2417             ("Elf64_Auxinfo", "a_un") => true,
2418 
2419             // union fields
2420             ("if_data", "__ifi_epoch") => true,
2421             ("if_data", "__ifi_lastchange") => true,
2422             ("ifreq", "ifr_ifru") => true,
2423             ("ifconf", "ifc_ifcu") => true,
2424 
2425             // anonymous struct
2426             ("devstat", "dev_links") => true,
2427 
2428             // FIXME: structs too complicated to bind for now...
2429             ("kinfo_proc", "ki_paddr") => true,
2430             ("kinfo_proc", "ki_addr") => true,
2431             ("kinfo_proc", "ki_tracep") => true,
2432             ("kinfo_proc", "ki_textvp") => true,
2433             ("kinfo_proc", "ki_fd") => true,
2434             ("kinfo_proc", "ki_vmspace") => true,
2435             ("kinfo_proc", "ki_pcb") => true,
2436             ("kinfo_proc", "ki_tdaddr") => true,
2437             ("kinfo_proc", "ki_pd") => true,
2438 
2439             // Anonymous type.
2440             ("filestat", "next") => true,
2441 
2442             // We ignore this field because we needed to use a hack in order to make rust 1.19
2443             // happy...
2444             ("kinfo_proc", "ki_sparestrings") => true,
2445 
2446             // `__sem_base` is a private struct field
2447             ("semid_ds", "__sem_base") => true,
2448 
2449             // `snap_time` is a `long double`, but it's a nightmare to bind correctly in rust
2450             // for the moment, so it's a best effort thing...
2451             ("statinfo", "snap_time") => true,
2452             ("sctp_sndrcvinfo", "__reserve_pad") => true,
2453             ("sctp_extrcvinfo", "__reserve_pad") => true,
2454             // `tcp_snd_wscale` and `tcp_rcv_wscale` are bitfields
2455             ("tcp_info", "tcp_snd_wscale") => true,
2456             ("tcp_info", "tcp_rcv_wscale") => true,
2457 
2458             _ => false,
2459         }
2460     });
2461 
2462     cfg.generate("../src/lib.rs", "main.rs");
2463 }
2464 
2465 fn test_emscripten(target: &str) {
2466     assert!(target.contains("emscripten"));
2467 
2468     let mut cfg = ctest_cfg();
2469     cfg.define("_GNU_SOURCE", None); // FIXME: ??
2470 
2471     headers! { cfg:
2472                "aio.h",
2473                "ctype.h",
2474                "dirent.h",
2475                "dlfcn.h",
2476                "errno.h",
2477                "fcntl.h",
2478                "glob.h",
2479                "grp.h",
2480                "ifaddrs.h",
2481                "langinfo.h",
2482                "limits.h",
2483                "locale.h",
2484                "malloc.h",
2485                "mntent.h",
2486                "mqueue.h",
2487                "net/ethernet.h",
2488                "net/if.h",
2489                "net/if_arp.h",
2490                "net/route.h",
2491                "netdb.h",
2492                "netinet/in.h",
2493                "netinet/ip.h",
2494                "netinet/tcp.h",
2495                "netinet/udp.h",
2496                "netpacket/packet.h",
2497                "poll.h",
2498                "pthread.h",
2499                "pty.h",
2500                "pwd.h",
2501                "resolv.h",
2502                "sched.h",
2503                "sched.h",
2504                "semaphore.h",
2505                "shadow.h",
2506                "signal.h",
2507                "stddef.h",
2508                "stdint.h",
2509                "stdio.h",
2510                "stdlib.h",
2511                "string.h",
2512                "sys/epoll.h",
2513                "sys/eventfd.h",
2514                "sys/file.h",
2515                "sys/ioctl.h",
2516                "sys/ipc.h",
2517                "sys/mman.h",
2518                "sys/mount.h",
2519                "sys/msg.h",
2520                "sys/personality.h",
2521                "sys/prctl.h",
2522                "sys/ptrace.h",
2523                "sys/quota.h",
2524                "sys/reboot.h",
2525                "sys/resource.h",
2526                "sys/sem.h",
2527                "sys/shm.h",
2528                "sys/signalfd.h",
2529                "sys/socket.h",
2530                "sys/stat.h",
2531                "sys/statvfs.h",
2532                "sys/swap.h",
2533                "sys/syscall.h",
2534                "sys/sysctl.h",
2535                "sys/sysinfo.h",
2536                "sys/time.h",
2537                "sys/timerfd.h",
2538                "sys/times.h",
2539                "sys/types.h",
2540                "sys/uio.h",
2541                "sys/un.h",
2542                "sys/user.h",
2543                "sys/utsname.h",
2544                "sys/vfs.h",
2545                "sys/wait.h",
2546                "sys/xattr.h",
2547                "syslog.h",
2548                "termios.h",
2549                "time.h",
2550                "ucontext.h",
2551                "unistd.h",
2552                "utime.h",
2553                "utmp.h",
2554                "utmpx.h",
2555                "wchar.h",
2556     }
2557 
2558     cfg.type_name(move |ty, is_struct, is_union| {
2559         match ty {
2560             // Just pass all these through, no need for a "struct" prefix
2561             "FILE" | "fd_set" | "Dl_info" | "DIR" => ty.to_string(),
2562 
2563             "os_unfair_lock" => "struct os_unfair_lock_s".to_string(),
2564 
2565             t if is_union => format!("union {}", t),
2566 
2567             t if t.ends_with("_t") => t.to_string(),
2568 
2569             // put `struct` in front of all structs:.
2570             t if is_struct => format!("struct {}", t),
2571 
2572             t => t.to_string(),
2573         }
2574     });
2575 
2576     cfg.field_name(move |struct_, field| {
2577         match field {
2578             // Our stat *_nsec fields normally don't actually exist but are part
2579             // of a timeval struct
2580             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
2581                 s.replace("e_nsec", ".tv_nsec")
2582             }
2583             // FIXME: appears that `epoll_event.data` is an union
2584             "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
2585             s => s.to_string(),
2586         }
2587     });
2588 
2589     cfg.skip_type(move |ty| {
2590         match ty {
2591             // sighandler_t is crazy across platforms
2592             // FIXME: is this necessary?
2593             "sighandler_t" => true,
2594 
2595             // FIXME: The size has been changed due to musl's time64
2596             "time_t" => true,
2597 
2598             _ => false,
2599         }
2600     });
2601 
2602     cfg.skip_struct(move |ty| {
2603         match ty {
2604             // This is actually a union, not a struct
2605             // FIXME: is this necessary?
2606             "sigval" => true,
2607 
2608             // FIXME: It was removed in
2609             // emscripten-core/emscripten@953e414
2610             "pthread_mutexattr_t" => true,
2611 
2612             // FIXME: Investigate why the test fails.
2613             // Skip for now to unblock CI.
2614             "pthread_condattr_t" => true,
2615 
2616             // FIXME: The size has been changed when upgraded to musl 1.2.2
2617             "pthread_mutex_t" => true,
2618 
2619             // FIXME: Lowered from 16 to 8 bytes in
2620             // llvm/llvm-project@d1a96e9
2621             "max_align_t" => true,
2622 
2623             // FIXME: The size has been changed due to time64
2624             "utimbuf" | "timeval" | "timespec" | "rusage" | "itimerval" | "sched_param"
2625             | "stat" | "stat64" | "shmid_ds" | "msqid_ds" => true,
2626 
2627             _ => false,
2628         }
2629     });
2630 
2631     cfg.skip_fn(move |name| {
2632         match name {
2633             // Emscripten does not support fork/exec/wait or any kind of multi-process support
2634             // https://github.com/emscripten-core/emscripten/blob/3.1.30/tools/system_libs.py#L973
2635             "execv" | "execve" | "execvp" | "execvpe" | "fexecve" | "wait4" => true,
2636 
2637             // FIXME: Remove after emscripten-core/emscripten#18492 is released (> 3.1.30).
2638             "clearenv" => true,
2639 
2640             _ => false,
2641         }
2642     });
2643 
2644     cfg.skip_const(move |name| {
2645         match name {
2646             // FIXME: deprecated - SIGNUNUSED was removed in glibc 2.26
2647             // users should use SIGSYS instead
2648             "SIGUNUSED" => true,
2649 
2650             // FIXME: emscripten uses different constants to constructs these
2651             n if n.contains("__SIZEOF_PTHREAD") => true,
2652 
2653             // FIXME: `SYS_gettid` was removed in
2654             // emscripten-core/emscripten@6d6474e
2655             "SYS_gettid" => true,
2656 
2657             // FIXME: These values have been changed
2658             | "POSIX_MADV_DONTNEED" // to 4
2659             | "RLIMIT_NLIMITS" // to 16
2660             | "RLIM_NLIMITS" // to 16
2661             | "IPPROTO_MAX" // to 263
2662             | "F_GETLK" // to 5
2663             | "F_SETLK" // to 6
2664             | "F_SETLKW" // to 7
2665             | "O_TMPFILE" // to 65
2666             | "SIG_IGN" // -1
2667                 => true,
2668 
2669             _ => false,
2670         }
2671     });
2672 
2673     cfg.skip_field_type(move |struct_, field| {
2674         // This is a weird union, don't check the type.
2675         // FIXME: is this necessary?
2676         (struct_ == "ifaddrs" && field == "ifa_ifu") ||
2677         // sighandler_t type is super weird
2678         // FIXME: is this necessary?
2679         (struct_ == "sigaction" && field == "sa_sigaction") ||
2680         // sigval is actually a union, but we pretend it's a struct
2681         // FIXME: is this necessary?
2682         (struct_ == "sigevent" && field == "sigev_value") ||
2683         // aio_buf is "volatile void*" and Rust doesn't understand volatile
2684         // FIXME: is this necessary?
2685         (struct_ == "aiocb" && field == "aio_buf")
2686     });
2687 
2688     cfg.skip_field(move |struct_, field| {
2689         // this is actually a union on linux, so we can't represent it well and
2690         // just insert some padding.
2691         // FIXME: is this necessary?
2692         (struct_ == "siginfo_t" && field == "_pad") ||
2693         // musl names this __dummy1 but it's still there
2694         // FIXME: is this necessary?
2695         (struct_ == "glob_t" && field == "gl_flags") ||
2696         // musl seems to define this as an *anonymous* bitfield
2697         // FIXME: is this necessary?
2698         (struct_ == "statvfs" && field == "__f_unused") ||
2699         // sigev_notify_thread_id is actually part of a sigev_un union
2700         (struct_ == "sigevent" && field == "sigev_notify_thread_id") ||
2701         // signalfd had SIGSYS fields added in Linux 4.18, but no libc release has them yet.
2702         (struct_ == "signalfd_siginfo" && (field == "ssi_addr_lsb" ||
2703                                            field == "_pad2" ||
2704                                            field == "ssi_syscall" ||
2705                                            field == "ssi_call_addr" ||
2706                                            field == "ssi_arch")) ||
2707         // FIXME: After musl 1.1.24, it have only one field `sched_priority`,
2708         // while other fields become reserved.
2709         (struct_ == "sched_param" && [
2710             "sched_ss_low_priority",
2711             "sched_ss_repl_period",
2712             "sched_ss_init_budget",
2713             "sched_ss_max_repl",
2714         ].contains(&field))
2715     });
2716 
2717     // FIXME: test linux like
2718     cfg.generate("../src/lib.rs", "main.rs");
2719 }
2720 
2721 fn test_neutrino(target: &str) {
2722     assert!(target.contains("nto-qnx"));
2723 
2724     let mut cfg = ctest_cfg();
2725 
2726     headers! { cfg:
2727         "ctype.h",
2728         "dirent.h",
2729         "dlfcn.h",
2730         "sys/elf.h",
2731         "fcntl.h",
2732         "glob.h",
2733         "grp.h",
2734         "iconv.h",
2735         "ifaddrs.h",
2736         "limits.h",
2737         "sys/link.h",
2738         "locale.h",
2739         "sys/malloc.h",
2740         "rcheck/malloc.h",
2741         "malloc.h",
2742         "mqueue.h",
2743         "net/if.h",
2744         "net/if_arp.h",
2745         "net/route.h",
2746         "netdb.h",
2747         "netinet/in.h",
2748         "netinet/ip.h",
2749         "netinet/tcp.h",
2750         "netinet/udp.h",
2751         "netinet/ip_var.h",
2752         "sys/poll.h",
2753         "pthread.h",
2754         "pwd.h",
2755         "regex.h",
2756         "resolv.h",
2757         "sys/sched.h",
2758         "sched.h",
2759         "semaphore.h",
2760         "shadow.h",
2761         "signal.h",
2762         "spawn.h",
2763         "stddef.h",
2764         "stdint.h",
2765         "stdio.h",
2766         "stdlib.h",
2767         "string.h",
2768         "sys/sysctl.h",
2769         "sys/file.h",
2770         "sys/inotify.h",
2771         "sys/ioctl.h",
2772         "sys/ipc.h",
2773         "sys/mman.h",
2774         "sys/mount.h",
2775         "sys/msg.h",
2776         "sys/resource.h",
2777         "sys/sem.h",
2778         "sys/socket.h",
2779         "sys/stat.h",
2780         "sys/statvfs.h",
2781         "sys/swap.h",
2782         "sys/termio.h",
2783         "sys/time.h",
2784         "sys/times.h",
2785         "sys/types.h",
2786         "sys/uio.h",
2787         "sys/un.h",
2788         "sys/utsname.h",
2789         "sys/wait.h",
2790         "syslog.h",
2791         "termios.h",
2792         "time.h",
2793         "sys/time.h",
2794         "ucontext.h",
2795         "unistd.h",
2796         "utime.h",
2797         "utmp.h",
2798         "wchar.h",
2799         "aio.h",
2800         "nl_types.h",
2801         "langinfo.h",
2802         "unix.h",
2803         "nbutil.h",
2804         "aio.h",
2805         "net/bpf.h",
2806         "net/if_dl.h",
2807         "sys/syspage.h",
2808 
2809         // TODO: The following header file doesn't appear as part of the default headers
2810         //       found in a standard installation of Neutrino 7.1 SDP.  The structures/
2811         //       functions dependent on it are currently commented out.
2812         //"sys/asyncmsg.h",
2813     }
2814 
2815     // Create and include a header file containing
2816     // items which are not included in any official
2817     // header file.
2818     let internal_header = "internal.h";
2819     let out_dir = env::var("OUT_DIR").unwrap();
2820     cfg.header(internal_header);
2821     cfg.include(&out_dir);
2822     std::fs::write(
2823         out_dir.to_owned() + "/" + internal_header,
2824         "#ifndef __internal_h__
2825         #define __internal_h__
2826         void __my_thread_exit(const void **);
2827         #endif",
2828     )
2829     .unwrap();
2830 
2831     cfg.type_name(move |ty, is_struct, is_union| {
2832         match ty {
2833             // Just pass all these through, no need for a "struct" prefix
2834             "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr" | "Elf64_Phdr" | "Elf32_Shdr"
2835             | "Elf64_Shdr" | "Elf32_Sym" | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr"
2836             | "Elf32_Chdr" | "Elf64_Chdr" | "aarch64_qreg_t" | "syspage_entry_info"
2837             | "syspage_array_info" => ty.to_string(),
2838 
2839             "Ioctl" => "int".to_string(),
2840 
2841             t if is_union => format!("union {}", t),
2842 
2843             t if t.ends_with("_t") => t.to_string(),
2844 
2845             // put `struct` in front of all structs:.
2846             t if is_struct => format!("struct {}", t),
2847 
2848             t => t.to_string(),
2849         }
2850     });
2851 
2852     cfg.field_name(move |_struct_, field| match field {
2853         "type_" => "type".to_string(),
2854 
2855         s => s.to_string(),
2856     });
2857 
2858     cfg.volatile_item(|i| {
2859         use ctest::VolatileItemKind::*;
2860         match i {
2861             // The following fields are volatie but since we cannot express that in
2862             // Rust types, we have to explicitly tell the checker about it here:
2863             StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => true,
2864             StructField(ref n, ref f) if n == "qtime_entry" && f == "nsec_tod_adjust" => true,
2865             StructField(ref n, ref f) if n == "qtime_entry" && f == "nsec" => true,
2866             StructField(ref n, ref f) if n == "qtime_entry" && f == "nsec_stable" => true,
2867             StructField(ref n, ref f) if n == "intrspin" && f == "value" => true,
2868             _ => false,
2869         }
2870     });
2871 
2872     cfg.skip_type(move |ty| {
2873         match ty {
2874             // FIXME: `sighandler_t` type is incorrect, see:
2875             // https://github.com/rust-lang/libc/issues/1359
2876             "sighandler_t" => true,
2877 
2878             // Does not exist in Neutrino
2879             "locale_t" => true,
2880 
2881             _ => false,
2882         }
2883     });
2884 
2885     cfg.skip_struct(move |ty| {
2886         if ty.starts_with("__c_anonymous_") {
2887             return true;
2888         }
2889         match ty {
2890             "Elf64_Phdr" | "Elf32_Phdr" => true,
2891 
2892             // FIXME: This is actually a union, not a struct
2893             "sigval" => true,
2894 
2895             // union
2896             "_channel_connect_attr" => true,
2897 
2898             _ => false,
2899         }
2900     });
2901 
2902     cfg.skip_const(move |name| {
2903         match name {
2904             // These signal "functions" are actually integer values that are casted to a fn ptr
2905             // This causes the compiler to err because of "illegal cast of int to ptr".
2906             "SIG_DFL" => true,
2907             "SIG_IGN" => true,
2908             "SIG_ERR" => true,
2909 
2910             _ => false,
2911         }
2912     });
2913 
2914     cfg.skip_fn(move |name| {
2915         // skip those that are manually verified
2916         match name {
2917             // FIXME: https://github.com/rust-lang/libc/issues/1272
2918             "execv" | "execve" | "execvp" | "execvpe" => true,
2919 
2920             // wrong signature
2921             "signal" => true,
2922 
2923             // wrong signature of callback ptr
2924             "__cxa_atexit" => true,
2925 
2926             // FIXME: Our API is unsound. The Rust API allows aliasing
2927             // pointers, but the C API requires pointers not to alias.
2928             // We should probably be at least using `&`/`&mut` here, see:
2929             // https://github.com/gnzlbg/ctest/issues/68
2930             "lio_listio" => true,
2931 
2932             // 2 fields are actually unions which we're simply representing
2933             // as structures.
2934             "ChannelConnectAttr" => true,
2935 
2936             // fields contains unions
2937             "SignalKillSigval" => true,
2938             "SignalKillSigval_r" => true,
2939 
2940             // Not defined in any headers.  Defined to work around a
2941             // stack unwinding bug.
2942             "__my_thread_exit" => true,
2943 
2944             _ => false,
2945         }
2946     });
2947 
2948     cfg.skip_field_type(move |struct_, field| {
2949         // sigval is actually a union, but we pretend it's a struct
2950         struct_ == "sigevent" && field == "sigev_value" ||
2951         // Anonymous structures
2952         struct_ == "_idle_hook" && field == "time"
2953     });
2954 
2955     cfg.skip_field(move |struct_, field| {
2956         (struct_ == "__sched_param" && field == "reserved") ||
2957         (struct_ == "sched_param" && field == "reserved") ||
2958         (struct_ == "sigevent" && field == "__sigev_un1") || // union
2959         (struct_ == "sigevent" && field == "__sigev_un2") || // union
2960         // sighandler_t type is super weird
2961         (struct_ == "sigaction" && field == "sa_sigaction") ||
2962         // does not exist
2963         (struct_ == "syspage_entry" && field == "__reserved") ||
2964         false // keep me for smaller diffs when something is added above
2965     });
2966 
2967     cfg.skip_static(move |name| (name == "__dso_handle"));
2968 
2969     cfg.generate("../src/lib.rs", "main.rs");
2970 }
2971 
2972 fn test_vxworks(target: &str) {
2973     assert!(target.contains("vxworks"));
2974 
2975     let mut cfg = ctest::TestGenerator::new();
2976     headers! { cfg:
2977                "vxWorks.h",
2978                "yvals.h",
2979                "nfs/nfsCommon.h",
2980                "rtpLibCommon.h",
2981                "randomNumGen.h",
2982                "taskLib.h",
2983                "sysLib.h",
2984                "ioLib.h",
2985                "inetLib.h",
2986                "socket.h",
2987                "errnoLib.h",
2988                "ctype.h",
2989                "dirent.h",
2990                "dlfcn.h",
2991                "elf.h",
2992                "fcntl.h",
2993                "grp.h",
2994                "sys/poll.h",
2995                "ifaddrs.h",
2996                "langinfo.h",
2997                "limits.h",
2998                "link.h",
2999                "locale.h",
3000                "sys/stat.h",
3001                "netdb.h",
3002                "pthread.h",
3003                "pwd.h",
3004                "sched.h",
3005                "semaphore.h",
3006                "signal.h",
3007                "stddef.h",
3008                "stdint.h",
3009                "stdio.h",
3010                "stdlib.h",
3011                "string.h",
3012                "sys/file.h",
3013                "sys/ioctl.h",
3014                "sys/socket.h",
3015                "sys/time.h",
3016                "sys/times.h",
3017                "sys/types.h",
3018                "sys/uio.h",
3019                "sys/un.h",
3020                "sys/utsname.h",
3021                "sys/wait.h",
3022                "netinet/tcp.h",
3023                "syslog.h",
3024                "termios.h",
3025                "time.h",
3026                "ucontext.h",
3027                "unistd.h",
3028                "utime.h",
3029                "wchar.h",
3030                "errno.h",
3031                "sys/mman.h",
3032                "pathLib.h",
3033                "mqueue.h",
3034     }
3035     // FIXME
3036     cfg.skip_const(move |name| match name {
3037         // sighandler_t weirdness
3038         "SIG_DFL" | "SIG_ERR" | "SIG_IGN"
3039         // This is not defined in vxWorks
3040         | "RTLD_DEFAULT"   => true,
3041         _ => false,
3042     });
3043     // FIXME
3044     cfg.skip_type(move |ty| match ty {
3045         "stat64" | "sighandler_t" | "off64_t" => true,
3046         _ => false,
3047     });
3048 
3049     cfg.skip_field_type(move |struct_, field| match (struct_, field) {
3050         ("siginfo_t", "si_value") | ("stat", "st_size") | ("sigaction", "sa_u") => true,
3051         _ => false,
3052     });
3053 
3054     cfg.skip_roundtrip(move |s| match s {
3055         _ => false,
3056     });
3057 
3058     cfg.type_name(move |ty, is_struct, is_union| match ty {
3059         "DIR" | "FILE" | "Dl_info" | "RTP_DESC" => ty.to_string(),
3060         t if is_union => format!("union {}", t),
3061         t if t.ends_with("_t") => t.to_string(),
3062         t if is_struct => format!("struct {}", t),
3063         t => t.to_string(),
3064     });
3065 
3066     // FIXME
3067     cfg.skip_fn(move |name| match name {
3068         // sigval
3069         "sigqueue" | "_sigqueue"
3070         // sighandler_t
3071         | "signal"
3072         // not used in static linking by default
3073         | "dlerror" => true,
3074         _ => false,
3075     });
3076 
3077     cfg.generate("../src/lib.rs", "main.rs");
3078 }
3079 
3080 fn test_linux(target: &str) {
3081     assert!(target.contains("linux"));
3082 
3083     // target_env
3084     let gnu = target.contains("gnu");
3085     let musl = target.contains("musl") || target.contains("ohos");
3086     let uclibc = target.contains("uclibc");
3087 
3088     match (gnu, musl, uclibc) {
3089         (true, false, false) => (),
3090         (false, true, false) => (),
3091         (false, false, true) => (),
3092         (_, _, _) => panic!(
3093             "linux target lib is gnu: {}, musl: {}, uclibc: {}",
3094             gnu, musl, uclibc
3095         ),
3096     }
3097 
3098     let arm = target.contains("arm");
3099     let i686 = target.contains("i686");
3100     let mips = target.contains("mips");
3101     let mips32 = mips && !target.contains("64");
3102     let mips64 = mips && target.contains("64");
3103     let ppc = target.contains("powerpc");
3104     let ppc64 = target.contains("powerpc64");
3105     let s390x = target.contains("s390x");
3106     let sparc64 = target.contains("sparc64");
3107     let x32 = target.contains("x32");
3108     let x86_32 = target.contains("i686");
3109     let x86_64 = target.contains("x86_64");
3110     let aarch64_musl = target.contains("aarch64") && musl;
3111     let gnueabihf = target.contains("gnueabihf");
3112     let x86_64_gnux32 = target.contains("gnux32") && x86_64;
3113     let riscv64 = target.contains("riscv64");
3114     let uclibc = target.contains("uclibc");
3115 
3116     let mut cfg = ctest_cfg();
3117     cfg.define("_GNU_SOURCE", None);
3118     // This macro re-deifnes fscanf,scanf,sscanf to link to the symbols that are
3119     // deprecated since glibc >= 2.29. This allows Rust binaries to link against
3120     // glibc versions older than 2.29.
3121     cfg.define("__GLIBC_USE_DEPRECATED_SCANF", None);
3122 
3123     headers! { cfg:
3124                "ctype.h",
3125                "dirent.h",
3126                "dlfcn.h",
3127                "elf.h",
3128                "fcntl.h",
3129                "getopt.h",
3130                "glob.h",
3131                [gnu]: "gnu/libc-version.h",
3132                "grp.h",
3133                "iconv.h",
3134                "ifaddrs.h",
3135                "langinfo.h",
3136                "libgen.h",
3137                "limits.h",
3138                "link.h",
3139                "locale.h",
3140                "malloc.h",
3141                "mntent.h",
3142                "mqueue.h",
3143                "net/ethernet.h",
3144                "net/if.h",
3145                "net/if_arp.h",
3146                "net/route.h",
3147                "netdb.h",
3148                "netinet/in.h",
3149                "netinet/ip.h",
3150                "netinet/tcp.h",
3151                "netinet/udp.h",
3152                "netpacket/packet.h",
3153                "poll.h",
3154                "pthread.h",
3155                "pty.h",
3156                "pwd.h",
3157                "regex.h",
3158                "resolv.h",
3159                "sched.h",
3160                "semaphore.h",
3161                "shadow.h",
3162                "signal.h",
3163                "spawn.h",
3164                "stddef.h",
3165                "stdint.h",
3166                "stdio.h",
3167                "stdlib.h",
3168                "string.h",
3169                "sys/epoll.h",
3170                "sys/eventfd.h",
3171                "sys/file.h",
3172                "sys/fsuid.h",
3173                "sys/inotify.h",
3174                "sys/ioctl.h",
3175                "sys/ipc.h",
3176                "sys/mman.h",
3177                "sys/mount.h",
3178                "sys/msg.h",
3179                "sys/personality.h",
3180                "sys/prctl.h",
3181                "sys/ptrace.h",
3182                "sys/quota.h",
3183                "sys/random.h",
3184                "sys/reboot.h",
3185                "sys/resource.h",
3186                "sys/sem.h",
3187                "sys/sendfile.h",
3188                "sys/shm.h",
3189                "sys/signalfd.h",
3190                "sys/socket.h",
3191                "sys/stat.h",
3192                "sys/statvfs.h",
3193                "sys/swap.h",
3194                "sys/syscall.h",
3195                "sys/time.h",
3196                "sys/timerfd.h",
3197                "sys/times.h",
3198                "sys/timex.h",
3199                "sys/types.h",
3200                "sys/uio.h",
3201                "sys/un.h",
3202                "sys/user.h",
3203                "sys/utsname.h",
3204                "sys/vfs.h",
3205                "sys/wait.h",
3206                "syslog.h",
3207                "termios.h",
3208                "time.h",
3209                "ucontext.h",
3210                "unistd.h",
3211                "utime.h",
3212                "utmp.h",
3213                "utmpx.h",
3214                "wchar.h",
3215                "errno.h",
3216                // `sys/io.h` is only available on x86*, Alpha, IA64, and 32-bit
3217                // ARM: https://bugzilla.redhat.com/show_bug.cgi?id=1116162
3218                // Also unavailable on gnueabihf with glibc 2.30.
3219                // https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=6b33f373c7b9199e00ba5fbafd94ac9bfb4337b1
3220                [(x86_64 || x86_32 || arm) && !gnueabihf]: "sys/io.h",
3221                // `sys/reg.h` is only available on x86 and x86_64
3222                [x86_64 || x86_32]: "sys/reg.h",
3223                // sysctl system call is deprecated and not available on musl
3224                // It is also unsupported in x32, deprecated since glibc 2.30:
3225                [!(x32 || musl || gnu)]: "sys/sysctl.h",
3226                // <execinfo.h> is not supported by musl:
3227                // https://www.openwall.com/lists/musl/2015/04/09/3
3228                // <execinfo.h> is not present on uclibc.
3229                [!(musl || uclibc)]: "execinfo.h",
3230     }
3231 
3232     // Include linux headers at the end:
3233     headers! {
3234         cfg:
3235         "asm/mman.h",
3236         "linux/can.h",
3237         "linux/can/raw.h",
3238         // FIXME: requires kernel headers >= 5.4.1.
3239         [!musl]: "linux/can/j1939.h",
3240         "linux/dccp.h",
3241         "linux/errqueue.h",
3242         "linux/falloc.h",
3243         "linux/filter.h",
3244         "linux/fs.h",
3245         "linux/futex.h",
3246         "linux/genetlink.h",
3247         "linux/if.h",
3248         "linux/if_addr.h",
3249         "linux/if_alg.h",
3250         "linux/if_ether.h",
3251         "linux/if_tun.h",
3252         "linux/input.h",
3253         "linux/ipv6.h",
3254         "linux/kexec.h",
3255         "linux/keyctl.h",
3256         "linux/magic.h",
3257         "linux/memfd.h",
3258         "linux/membarrier.h",
3259         "linux/mempolicy.h",
3260         "linux/mman.h",
3261         "linux/module.h",
3262         // FIXME: requires kernel headers >= 5.1.
3263         [!musl]: "linux/mount.h",
3264         "linux/net_tstamp.h",
3265         "linux/netfilter/nfnetlink.h",
3266         "linux/netfilter/nfnetlink_log.h",
3267         "linux/netfilter/nfnetlink_queue.h",
3268         "linux/netfilter/nf_tables.h",
3269         "linux/netfilter_ipv4.h",
3270         "linux/netfilter_ipv6.h",
3271         "linux/netfilter_ipv6/ip6_tables.h",
3272         "linux/netlink.h",
3273         // FIXME: requires Linux >= 5.6:
3274         [!musl && !sparc64]: "linux/openat2.h",
3275         [!musl]: "linux/ptrace.h",
3276         "linux/quota.h",
3277         "linux/random.h",
3278         "linux/reboot.h",
3279         "linux/rtnetlink.h",
3280         "linux/sched.h",
3281         "linux/sctp.h",
3282         "linux/seccomp.h",
3283         "linux/sock_diag.h",
3284         "linux/sockios.h",
3285         "linux/uinput.h",
3286         "linux/vm_sockets.h",
3287         "linux/wait.h",
3288         "sys/fanotify.h",
3289         // <sys/auxv.h> is not present on uclibc
3290         [!uclibc]: "sys/auxv.h",
3291     }
3292 
3293     // note: aio.h must be included before sys/mount.h
3294     headers! {
3295         cfg:
3296         "sys/xattr.h",
3297         "sys/sysinfo.h",
3298         // AIO is not supported by uclibc:
3299         [!uclibc]: "aio.h",
3300     }
3301 
3302     cfg.type_name(move |ty, is_struct, is_union| {
3303         match ty {
3304             // Just pass all these through, no need for a "struct" prefix
3305             "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr" | "Elf64_Phdr" | "Elf32_Shdr"
3306             | "Elf64_Shdr" | "Elf32_Sym" | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr"
3307             | "Elf32_Chdr" | "Elf64_Chdr" => ty.to_string(),
3308 
3309             "Ioctl" if gnu => "unsigned long".to_string(),
3310             "Ioctl" => "int".to_string(),
3311 
3312             t if is_union => format!("union {}", t),
3313 
3314             t if t.ends_with("_t") => t.to_string(),
3315 
3316             // In MUSL `flock64` is a typedef to `flock`.
3317             "flock64" if musl => format!("struct {}", ty),
3318 
3319             // put `struct` in front of all structs:.
3320             t if is_struct => format!("struct {}", t),
3321 
3322             t => t.to_string(),
3323         }
3324     });
3325 
3326     cfg.field_name(move |struct_, field| {
3327         match field {
3328             // Our stat *_nsec fields normally don't actually exist but are part
3329             // of a timeval struct
3330             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
3331                 s.replace("e_nsec", ".tv_nsec")
3332             }
3333             // FIXME: epoll_event.data is actually a union in C, but in Rust
3334             // it is only a u64 because we only expose one field
3335             // http://man7.org/linux/man-pages/man2/epoll_wait.2.html
3336             "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
3337             // The following structs have a field called `type` in C,
3338             // but `type` is a Rust keyword, so these fields are translated
3339             // to `type_` in Rust.
3340             "type_"
3341                 if struct_ == "input_event"
3342                     || struct_ == "input_mask"
3343                     || struct_ == "ff_effect" =>
3344             {
3345                 "type".to_string()
3346             }
3347 
3348             s => s.to_string(),
3349         }
3350     });
3351 
3352     cfg.skip_type(move |ty| {
3353         match ty {
3354             // FIXME: `sighandler_t` type is incorrect, see:
3355             // https://github.com/rust-lang/libc/issues/1359
3356             "sighandler_t" => true,
3357 
3358             // These cannot be tested when "resolv.h" is included and are tested
3359             // in the `linux_elf.rs` file.
3360             "Elf64_Phdr" | "Elf32_Phdr" => true,
3361 
3362             // This type is private on Linux. It is implemented as a C `enum`
3363             // (`c_uint`) and this clashes with the type of the `rlimit` APIs
3364             // which expect a `c_int` even though both are ABI compatible.
3365             "__rlimit_resource_t" => true,
3366             // on Linux, this is a volatile int
3367             "pthread_spinlock_t" => true,
3368 
3369             // For internal use only, to define architecture specific ioctl constants with a libc specific type.
3370             "Ioctl" => true,
3371 
3372             // FIXME: requires >= 5.4.1 kernel headers
3373             "pgn_t" if musl => true,
3374             "priority_t" if musl => true,
3375             "name_t" if musl => true,
3376 
3377             _ => false,
3378         }
3379     });
3380 
3381     cfg.skip_struct(move |ty| {
3382         if ty.starts_with("__c_anonymous_") {
3383             return true;
3384         }
3385         // FIXME: musl CI has old headers
3386         if (musl || sparc64) && ty.starts_with("uinput_") {
3387             return true;
3388         }
3389         // FIXME(https://github.com/rust-lang/libc/issues/1558): passing by
3390         // value corrupts the value for reasons not understood.
3391         if (gnu && sparc64) && ty == "ip_mreqn" {
3392             return true;
3393         }
3394         match ty {
3395             // These cannot be tested when "resolv.h" is included and are tested
3396             // in the `linux_elf.rs` file.
3397             "Elf64_Phdr" | "Elf32_Phdr" => true,
3398 
3399             // On Linux, the type of `ut_tv` field of `struct utmpx`
3400             // can be an anonymous struct, so an extra struct,
3401             // which is absent in glibc, has to be defined.
3402             "__timeval" => true,
3403 
3404             // FIXME: This is actually a union, not a struct
3405             "sigval" => true,
3406 
3407             // This type is tested in the `linux_termios.rs` file since there
3408             // are header conflicts when including them with all the other
3409             // structs.
3410             "termios2" => true,
3411 
3412             // FIXME: remove once we set minimum supported glibc version.
3413             // ucontext_t added a new field as of glibc 2.28; our struct definition is
3414             // conservative and omits the field, but that means the size doesn't match for newer
3415             // glibcs (see https://github.com/rust-lang/libc/issues/1410)
3416             "ucontext_t" if gnu => true,
3417 
3418             // FIXME: Somehow we cannot include headers correctly in glibc 2.30.
3419             // So let's ignore for now and re-visit later.
3420             // Probably related: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91085
3421             "statx" => true,
3422             "statx_timestamp" => true,
3423 
3424             // On Linux, the type of `ut_exit` field of struct `utmpx`
3425             // can be an anonymous struct, so an extra struct,
3426             // which is absent in musl, has to be defined.
3427             "__exit_status" if musl => true,
3428 
3429             // clone_args might differ b/w libc versions
3430             "clone_args" => true,
3431 
3432             // Might differ between kernel versions
3433             "open_how" => true,
3434 
3435             // FIXME: requires >= 5.4.1 kernel headers
3436             "j1939_filter" if musl => true,
3437 
3438             // FIXME: requires >= 5.4 kernel headers
3439             "sockaddr_can" if musl => true,
3440 
3441             // FIXME: Unignore once we update Ubuntu to 22.04
3442             "mallinfo2" if sparc64 => true,
3443             "ptrace_rseq_configuration" if sparc64 => true,
3444             "sctp_initmsg" | "sctp_sndrcvinfo" | "sctp_sndinfo" | "sctp_rcvinfo"
3445             | "sctp_nxtinfo" | "sctp_prinfo" | "sctp_authinfo" => true,
3446 
3447             _ => false,
3448         }
3449     });
3450 
3451     cfg.skip_const(move |name| {
3452         if !gnu {
3453             // Skip definitions from the kernel on non-glibc Linux targets.
3454             // They're libc-independent, so we only need to check them on one
3455             // libc. We don't want to break CI if musl or another libc doesn't
3456             // have the definitions yet. (We do still want to check them on
3457             // every glibc target, though, as some of them can vary by
3458             // architecture.)
3459             //
3460             // This is not an exhaustive list of kernel constants, just a list
3461             // of prefixes of all those that have appeared here or that get
3462             // updated regularly and seem likely to cause breakage.
3463             if name.starts_with("AF_")
3464                 || name.starts_with("ARPHRD_")
3465                 || name.starts_with("EPOLL")
3466                 || name.starts_with("F_")
3467                 || name.starts_with("FALLOC_FL_")
3468                 || name.starts_with("IFLA_")
3469                 || name.starts_with("KEXEC_")
3470                 || name.starts_with("MS_")
3471                 || name.starts_with("MSG_")
3472                 || name.starts_with("OPEN_TREE_")
3473                 || name.starts_with("P_")
3474                 || name.starts_with("PF_")
3475                 || name.starts_with("RLIMIT_")
3476                 || name.starts_with("SOL_")
3477                 || name.starts_with("STATX_")
3478                 || name.starts_with("SW_")
3479                 || name.starts_with("SYS_")
3480                 || name.starts_with("TCP_")
3481                 || name.starts_with("UINPUT_")
3482                 || name.starts_with("VMADDR_")
3483             {
3484                 return true;
3485             }
3486         }
3487         if musl || sparc64 {
3488             // FIXME: Requires >= 5.4.1 kernel headers
3489             if name.starts_with("J1939")
3490                 || name.starts_with("SO_J1939")
3491                 || name.starts_with("SCM_J1939")
3492             {
3493                 return true;
3494             }
3495             // FIXME: Requires >= 5.10 kernel headers
3496             if name.starts_with("MEMBARRIER_CMD_REGISTER")
3497                 || name.starts_with("MEMBARRIER_CMD_PRIVATE")
3498             {
3499                 return true;
3500             }
3501         }
3502         match name {
3503             // These constants are not available if gnu headers have been included
3504             // and can therefore not be tested here
3505             //
3506             // The IPV6 constants are tested in the `linux_ipv6.rs` tests:
3507             | "IPV6_FLOWINFO"
3508             | "IPV6_FLOWLABEL_MGR"
3509             | "IPV6_FLOWINFO_SEND"
3510             | "IPV6_FLOWINFO_FLOWLABEL"
3511             | "IPV6_FLOWINFO_PRIORITY"
3512             // The F_ fnctl constants are tested in the `linux_fnctl.rs` tests:
3513             | "F_CANCELLK"
3514             | "F_ADD_SEALS"
3515             | "F_GET_SEALS"
3516             | "F_SEAL_SEAL"
3517             | "F_SEAL_SHRINK"
3518             | "F_SEAL_GROW"
3519             | "F_SEAL_WRITE" => true,
3520             // The `ARPHRD_CAN` is tested in the `linux_if_arp.rs` tests
3521             // because including `linux/if_arp.h` causes some conflicts:
3522             "ARPHRD_CAN" => true,
3523 
3524             // FIXME: deprecated: not available in any header
3525             // See: https://github.com/rust-lang/libc/issues/1356
3526             "ENOATTR" => true,
3527 
3528             // FIXME: SIGUNUSED was removed in glibc 2.26
3529             // Users should use SIGSYS instead.
3530             "SIGUNUSED" => true,
3531 
3532             // FIXME: conflicts with glibc headers and is tested in
3533             // `linux_termios.rs` below:
3534             | "BOTHER"
3535             | "IBSHIFT"
3536             | "TCGETS2"
3537             | "TCSETS2"
3538             | "TCSETSW2"
3539             | "TCSETSF2" => true,
3540 
3541             // FIXME: on musl the pthread types are defined a little differently
3542             // - these constants are used by the glibc implementation.
3543             n if musl && n.contains("__SIZEOF_PTHREAD") => true,
3544 
3545             // FIXME: It was extended to 4096 since glibc 2.31 (Linux 5.4).
3546             // We should do so after a while.
3547             "SOMAXCONN" if gnu => true,
3548 
3549             // deprecated: not available from Linux kernel 5.6:
3550             "VMADDR_CID_RESERVED" => true,
3551 
3552             // IPPROTO_MAX was increased in 5.6 for IPPROTO_MPTCP:
3553             | "IPPROTO_MAX"
3554             | "IPPROTO_MPTCP" => true,
3555 
3556             // FIXME: Not currently available in headers
3557             "P_PIDFD" if mips => true,
3558             "SYS_pidfd_open" if mips => true,
3559 
3560             // FIXME: Not currently available in headers on MIPS
3561             // Not yet implemented on sparc64
3562             "SYS_clone3" if mips | sparc64 => true,
3563 
3564             // FIXME: Not defined on ARM, gnueabihf, MIPS, musl, PowerPC, riscv64, s390x, and sparc64.
3565             "SYS_memfd_secret" if arm | gnueabihf | mips | musl | ppc | riscv64 | s390x | sparc64 => true,
3566 
3567             // FIXME: Added in Linux 5.16
3568             // https://github.com/torvalds/linux/commit/039c0ec9bb77446d7ada7f55f90af9299b28ca49
3569             "SYS_futex_waitv" => true,
3570 
3571             // FIXME: Added in Linux 5.17
3572             // https://github.com/torvalds/linux/commit/c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0
3573             "SYS_set_mempolicy_home_node" => true,
3574 
3575             // FIXME: Added in Linux 5.18
3576             // https://github.com/torvalds/linux/commit/8b5413647262dda8d8d0e07e14ea1de9ac7cf0b2
3577             "NFQA_PRIORITY" => true,
3578 
3579             // FIXME: requires more recent kernel headers on CI
3580             | "UINPUT_VERSION"
3581             | "SW_MAX"
3582             | "SW_CNT"
3583                 if mips || ppc64 || riscv64 || sparc64 => true,
3584 
3585             // FIXME: Not currently available in headers on ARM, MIPS and musl.
3586             "NETLINK_GET_STRICT_CHK" if arm || mips || musl => true,
3587 
3588             // kernel constants not available in uclibc 1.0.34
3589             | "EXTPROC"
3590             | "FAN_MARK_FILESYSTEM"
3591             | "FAN_MARK_INODE"
3592             | "IPPROTO_BEETPH"
3593             | "IPPROTO_MPLS"
3594             | "IPV6_HDRINCL"
3595             | "IPV6_MULTICAST_ALL"
3596             | "IPV6_PMTUDISC_INTERFACE"
3597             | "IPV6_PMTUDISC_OMIT"
3598             | "IPV6_ROUTER_ALERT_ISOLATE"
3599             | "PACKET_MR_UNICAST"
3600             | "RUSAGE_THREAD"
3601             | "SHM_EXEC"
3602             | "UDP_GRO"
3603             | "UDP_SEGMENT"
3604                 if uclibc => true,
3605 
3606             // headers conflicts with linux/pidfd.h
3607             "PIDFD_NONBLOCK" => true,
3608 
3609             // is a private value for kernel usage normally
3610             "FUSE_SUPER_MAGIC" => true,
3611 
3612             // linux 5.17 min
3613             "PR_SET_VMA" | "PR_SET_VMA_ANON_NAME" => true,
3614 
3615             // present in recent kernels only
3616             "PR_SCHED_CORE" | "PR_SCHED_CORE_CREATE" | "PR_SCHED_CORE_GET" | "PR_SCHED_CORE_MAX" | "PR_SCHED_CORE_SCOPE_PROCESS_GROUP" | "PR_SCHED_CORE_SCOPE_THREAD" | "PR_SCHED_CORE_SCOPE_THREAD_GROUP" | "PR_SCHED_CORE_SHARE_FROM" | "PR_SCHED_CORE_SHARE_TO" => true,
3617 
3618             // present in recent kernels only >= 5.13
3619             "PR_PAC_SET_ENABLED_KEYS" | "PR_PAC_GET_ENABLED_KEYS" => true,
3620             // present in recent kernels only >= 5.19
3621             "PR_SME_SET_VL" | "PR_SME_GET_VL" | "PR_SME_VL_LEN_MAX" | "PR_SME_SET_VL_INHERIT" | "PR_SME_SET_VL_ONE_EXEC" => true,
3622 
3623             // Added in Linux 5.14
3624             "FUTEX_LOCK_PI2" => true,
3625 
3626             // Added in  linux 6.1
3627             "STATX_DIOALIGN" => true,
3628 
3629             // FIXME: Parts of netfilter/nfnetlink*.h require more recent kernel headers:
3630             | "RTNLGRP_MCTP_IFADDR" // linux v5.17+
3631             | "RTNLGRP_TUNNEL" // linux v5.18+
3632             | "RTNLGRP_STATS" // linux v5.18+
3633                 => true,
3634 
3635             // FIXME: The below is no longer const in glibc 2.34:
3636             // https://github.com/bminor/glibc/commit/5d98a7dae955bafa6740c26eaba9c86060ae0344
3637             | "PTHREAD_STACK_MIN"
3638             | "SIGSTKSZ"
3639             | "MINSIGSTKSZ"
3640                 if gnu => true,
3641 
3642             // FIXME: Linux >= 5.16 changed its value:
3643             // https://github.com/torvalds/linux/commit/42df6e1d221dddc0f2acf2be37e68d553ad65f96
3644             "NF_NETDEV_NUMHOOKS" => true,
3645 
3646             // FIXME: requires Linux >= 5.6:
3647             | "RESOLVE_BENEATH"
3648             | "RESOLVE_CACHED"
3649             | "RESOLVE_IN_ROOT"
3650             | "RESOLVE_NO_MAGICLINKS"
3651             | "RESOLVE_NO_SYMLINKS"
3652             | "RESOLVE_NO_XDEV" if musl || sparc64 => true,
3653 
3654             // FIXME: requires Linux >= 5.4:
3655             | "CAN_J1939"
3656             | "CAN_NPROTO" if musl || sparc64 => true,
3657 
3658             // FIXME: requires Linux >= 5.6
3659             "GRND_INSECURE" if musl || sparc64 => true,
3660 
3661             // FIXME: requires Linux >= 5.7:
3662             "MREMAP_DONTUNMAP" if musl || sparc64 => true,
3663 
3664             // FIXME: Requires more recent kernel headers (5.9 / 5.11):
3665             | "CLOSE_RANGE_UNSHARE"
3666             | "CLOSE_RANGE_CLOEXEC" if musl || sparc64 => true,
3667 
3668             // FIXME: requires Linux >= 5.12:
3669             "MPOL_F_NUMA_BALANCING" if musl || sparc64 => true,
3670 
3671             // FIXME: Requires more recent kernel headers
3672             | "NFNL_SUBSYS_COUNT" // bumped in v5.14
3673             | "NFNL_SUBSYS_HOOK" // v5.14+
3674             | "NFULA_VLAN" // v5.4+
3675             | "NFULA_L2HDR" // v5.4+
3676             | "NFULA_VLAN_PROTO" // v5.4+
3677             | "NFULA_VLAN_TCI" // v5.4+
3678             | "NFULA_VLAN_UNSPEC" // v5.4+
3679             | "RTNLGRP_NEXTHOP" // linux v5.3+
3680             | "RTNLGRP_BRVLAN" // linux v5.6+
3681             if musl || sparc64 => true,
3682 
3683             // FIXME: Unignore once we update Ubuntu to 22.04
3684             | "VMADDR_CID_LOCAL"
3685             | "STATX_MNT_ID"
3686             | "SYS_close_range"
3687             | "SYS_openat2"
3688             | "SYS_pidfd_getfd"
3689             | "SYS_faccessat2"
3690             | "SYS_process_madvise"
3691             | "SYS_epoll_pwait2"
3692             | "SYS_mount_setattr"
3693             | "SYS_quotactl_fd"
3694             | "SYS_landlock_create_ruleset"
3695             | "SYS_landlock_add_rule"
3696             | "SYS_landlock_restrict_self"
3697             | "SYS_process_mrelease"
3698             | "IFLA_PROP_LIST"
3699             | "IFLA_ALT_IFNAME"
3700             | "IFLA_PERM_ADDRESS"
3701             | "IFLA_PROTO_DOWN_REASON"
3702             | "STATX_ATTR_MOUNT_ROOT"
3703             | "STATX_ATTR_VERITY"
3704             | "STATX_ATTR_DAX"
3705             if sparc64 => true,
3706             // Added in Linux 5.13
3707             "PTRACE_GET_RSEQ_CONFIGURATION" if sparc64 => true,
3708 
3709             // FIXME: Requires more recent kernel headers
3710             | "IFLA_PARENT_DEV_NAME"     // linux v5.13+
3711             | "IFLA_PARENT_DEV_BUS_NAME" // linux v5.13+
3712             | "IFLA_GRO_MAX_SIZE"        // linux v5.16+
3713             | "IFLA_TSO_MAX_SIZE"        // linux v5.18+
3714             | "IFLA_TSO_MAX_SEGS"        // linux v5.18+
3715             | "IFLA_ALLMULTI"            // linux v6.0+
3716                 => true,
3717             "SCTP_FUTURE_ASSOC" | "SCTP_CURRENT_ASSOC" | "SCTP_ALL_ASSOC" | "SCTP_PEER_ADDR_THLDS_V2" => true, // linux 5.5+
3718 
3719             _ => false,
3720         }
3721     });
3722 
3723     cfg.skip_fn(move |name| {
3724         // skip those that are manually verified
3725         match name {
3726             // FIXME: https://github.com/rust-lang/libc/issues/1272
3727             "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
3728 
3729             // There are two versions of the sterror_r function, see
3730             //
3731             // https://linux.die.net/man/3/strerror_r
3732             //
3733             // An XSI-compliant version provided if:
3734             //
3735             // (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
3736             //  && ! _GNU_SOURCE
3737             //
3738             // and a GNU specific version provided if _GNU_SOURCE is defined.
3739             //
3740             // libc provides bindings for the XSI-compliant version, which is
3741             // preferred for portable applications.
3742             //
3743             // We skip the test here since here _GNU_SOURCE is defined, and
3744             // test the XSI version below.
3745             "strerror_r" => true,
3746 
3747             // FIXME: Our API is unsound. The Rust API allows aliasing
3748             // pointers, but the C API requires pointers not to alias.
3749             // We should probably be at least using `&`/`&mut` here, see:
3750             // https://github.com/gnzlbg/ctest/issues/68
3751             "lio_listio" if musl => true,
3752 
3753             // FIXME: the glibc version used by the Sparc64 build jobs
3754             // which use Debian 10.0 is too old.
3755             "statx" if sparc64 => true,
3756             // Needs glibc 2.34 or later.
3757             "posix_spawn_file_actions_addclosefrom_np" if gnu && sparc64 => true,
3758             // Needs glibc 2.35 or later.
3759             "posix_spawn_file_actions_addtcsetpgrp_np" if gnu && sparc64 => true,
3760 
3761             // FIXME: Deprecated since glibc 2.30. Remove fn once upstream does.
3762             "sysctl" if gnu => true,
3763 
3764             // FIXME: It now takes c_void instead of timezone since glibc 2.31.
3765             "gettimeofday" if gnu => true,
3766 
3767             // These are all implemented as static inline functions in uclibc, so
3768             // they cannot be linked against.
3769             // If implementations are required, they might need to be implemented
3770             // in this crate.
3771             "posix_spawnattr_init" if uclibc => true,
3772             "posix_spawnattr_destroy" if uclibc => true,
3773             "posix_spawnattr_getsigdefault" if uclibc => true,
3774             "posix_spawnattr_setsigdefault" if uclibc => true,
3775             "posix_spawnattr_getsigmask" if uclibc => true,
3776             "posix_spawnattr_setsigmask" if uclibc => true,
3777             "posix_spawnattr_getflags" if uclibc => true,
3778             "posix_spawnattr_setflags" if uclibc => true,
3779             "posix_spawnattr_getpgroup" if uclibc => true,
3780             "posix_spawnattr_setpgroup" if uclibc => true,
3781             "posix_spawnattr_getschedpolicy" if uclibc => true,
3782             "posix_spawnattr_setschedpolicy" if uclibc => true,
3783             "posix_spawnattr_getschedparam" if uclibc => true,
3784             "posix_spawnattr_setschedparam" if uclibc => true,
3785             "posix_spawn_file_actions_init" if uclibc => true,
3786             "posix_spawn_file_actions_destroy" if uclibc => true,
3787 
3788             // uclibc defines the flags type as a uint, but dependent crates
3789             // assume it's a int instead.
3790             "getnameinfo" if uclibc => true,
3791 
3792             // FIXME: This needs musl 1.2.2 or later.
3793             "gettid" if musl => true,
3794 
3795             // Needs glibc 2.33 or later.
3796             "mallinfo2" => true,
3797 
3798             "reallocarray" if musl => true,
3799 
3800             // Not defined in uclibc as of 1.0.34
3801             "gettid" if uclibc => true,
3802 
3803             // Needs musl 1.2.3 or later.
3804             "pthread_getname_np" if musl => true,
3805 
3806             // pthread_sigqueue uses sigval, which was initially declared
3807             // as a struct but should be defined as a union. However due
3808             // to the issues described here: https://github.com/rust-lang/libc/issues/2816
3809             // it can't be changed from struct.
3810             "pthread_sigqueue" => true,
3811 
3812             // There are two versions of basename(3) on Linux with glibc, see
3813             //
3814             // https://man7.org/linux/man-pages/man3/basename.3.html
3815             //
3816             // If libgen.h is included, then the POSIX version will be available;
3817             // If _GNU_SOURCE is defined and string.h is included, then the GNU one
3818             // will be used.
3819             //
3820             // libc exposes both of them, providing a prefix to differentiate between
3821             // them.
3822             //
3823             // Because the name with prefix is not a valid symbol in C, we have to
3824             // skip the tests.
3825             "posix_basename" if gnu => true,
3826             "gnu_basename" if gnu => true,
3827 
3828             _ => false,
3829         }
3830     });
3831 
3832     cfg.skip_field_type(move |struct_, field| {
3833         // This is a weird union, don't check the type.
3834         (struct_ == "ifaddrs" && field == "ifa_ifu") ||
3835         // sighandler_t type is super weird
3836         (struct_ == "sigaction" && field == "sa_sigaction") ||
3837         // __timeval type is a patch which doesn't exist in glibc
3838         (struct_ == "utmpx" && field == "ut_tv") ||
3839         // sigval is actually a union, but we pretend it's a struct
3840         (struct_ == "sigevent" && field == "sigev_value") ||
3841         // this one is an anonymous union
3842         (struct_ == "ff_effect" && field == "u") ||
3843         // `__exit_status` type is a patch which is absent in musl
3844         (struct_ == "utmpx" && field == "ut_exit" && musl) ||
3845         // `can_addr` is an anonymous union
3846         (struct_ == "sockaddr_can" && field == "can_addr")
3847     });
3848 
3849     cfg.volatile_item(|i| {
3850         use ctest::VolatileItemKind::*;
3851         match i {
3852             // aio_buf is a volatile void** but since we cannot express that in
3853             // Rust types, we have to explicitly tell the checker about it here:
3854             StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => true,
3855             _ => false,
3856         }
3857     });
3858 
3859     cfg.skip_field(move |struct_, field| {
3860         // this is actually a union on linux, so we can't represent it well and
3861         // just insert some padding.
3862         (struct_ == "siginfo_t" && field == "_pad") ||
3863         // musl names this __dummy1 but it's still there
3864         (musl && struct_ == "glob_t" && field == "gl_flags") ||
3865         // musl seems to define this as an *anonymous* bitfield
3866         (musl && struct_ == "statvfs" && field == "__f_unused") ||
3867         // sigev_notify_thread_id is actually part of a sigev_un union
3868         (struct_ == "sigevent" && field == "sigev_notify_thread_id") ||
3869         // signalfd had SIGSYS fields added in Linux 4.18, but no libc release
3870         // has them yet.
3871         (struct_ == "signalfd_siginfo" && (field == "ssi_addr_lsb" ||
3872                                            field == "_pad2" ||
3873                                            field == "ssi_syscall" ||
3874                                            field == "ssi_call_addr" ||
3875                                            field == "ssi_arch")) ||
3876         // FIXME: After musl 1.1.24, it have only one field `sched_priority`,
3877         // while other fields become reserved.
3878         (struct_ == "sched_param" && [
3879             "sched_ss_low_priority",
3880             "sched_ss_repl_period",
3881             "sched_ss_init_budget",
3882             "sched_ss_max_repl",
3883         ].contains(&field) && musl) ||
3884         // FIXME: After musl 1.1.24, the type becomes `int` instead of `unsigned short`.
3885         (struct_ == "ipc_perm" && field == "__seq" && aarch64_musl) ||
3886         // glibc uses unnamed fields here and Rust doesn't support that yet
3887         (struct_ == "timex" && field.starts_with("__unused")) ||
3888         // FIXME: It now takes mode_t since glibc 2.31 on some targets.
3889         (struct_ == "ipc_perm" && field == "mode"
3890             && ((x86_64 || i686 || arm || riscv64) && gnu || x86_64_gnux32)
3891         ) ||
3892         // the `u` field is in fact an anonymous union
3893         (gnu && struct_ == "ptrace_syscall_info" && (field == "u" || field == "pad")) ||
3894         // the vregs field is a `__uint128_t` C's type.
3895         (struct_ == "user_fpsimd_struct" && field == "vregs") ||
3896         // Linux >= 5.11 tweaked the `svm_zero` field of the `sockaddr_vm` struct.
3897         // https://github.com/torvalds/linux/commit/dc8eeef73b63ed8988224ba6b5ed19a615163a7f
3898         (struct_ == "sockaddr_vm" && field == "svm_zero") ||
3899         // the `ifr_ifru` field is an anonymous union
3900         (struct_ == "ifreq" && field == "ifr_ifru") ||
3901         // glibc uses a single array `uregs` instead of individual fields.
3902         (struct_ == "user_regs" && arm)
3903     });
3904 
3905     cfg.skip_roundtrip(move |s| match s {
3906         // FIXME:
3907         "utsname" if mips32 || mips64 => true,
3908         // FIXME:
3909         "mcontext_t" if s390x => true,
3910         // FIXME: This is actually a union.
3911         "fpreg_t" if s390x => true,
3912 
3913         "sockaddr_un" | "sembuf" | "ff_constant_effect" if mips32 && (gnu || musl) => true,
3914         "ipv6_mreq"
3915         | "ip_mreq_source"
3916         | "sockaddr_in6"
3917         | "sockaddr_ll"
3918         | "in_pktinfo"
3919         | "arpreq"
3920         | "arpreq_old"
3921         | "sockaddr_un"
3922         | "ff_constant_effect"
3923         | "ff_ramp_effect"
3924         | "ff_condition_effect"
3925         | "Elf32_Ehdr"
3926         | "Elf32_Chdr"
3927         | "ucred"
3928         | "in6_pktinfo"
3929         | "sockaddr_nl"
3930         | "termios"
3931         | "nlmsgerr"
3932             if (mips64 || sparc64) && gnu =>
3933         {
3934             true
3935         }
3936 
3937         // FIXME: the call ABI of max_align_t is incorrect on these platforms:
3938         "max_align_t" if i686 || mips64 || ppc64 => true,
3939 
3940         _ => false,
3941     });
3942 
3943     cfg.generate("../src/lib.rs", "main.rs");
3944 
3945     test_linux_like_apis(target);
3946 }
3947 
3948 // This function tests APIs that are incompatible to test when other APIs
3949 // are included (e.g. because including both sets of headers clashes)
3950 fn test_linux_like_apis(target: &str) {
3951     let gnu = target.contains("gnu");
3952     let musl = target.contains("musl") || target.contains("ohos");
3953     let linux = target.contains("linux");
3954     let emscripten = target.contains("emscripten");
3955     let android = target.contains("android");
3956     assert!(linux || android || emscripten);
3957 
3958     if linux || android || emscripten {
3959         // test strerror_r from the `string.h` header
3960         let mut cfg = ctest_cfg();
3961         cfg.skip_type(|_| true).skip_static(|_| true);
3962 
3963         headers! { cfg: "string.h" }
3964         cfg.skip_fn(|f| match f {
3965             "strerror_r" => false,
3966             _ => true,
3967         })
3968         .skip_const(|_| true)
3969         .skip_struct(|_| true);
3970         cfg.generate("../src/lib.rs", "linux_strerror_r.rs");
3971     }
3972 
3973     if linux || android || emscripten {
3974         // test fcntl - see:
3975         // http://man7.org/linux/man-pages/man2/fcntl.2.html
3976         let mut cfg = ctest_cfg();
3977 
3978         if musl {
3979             cfg.header("fcntl.h");
3980         } else {
3981             cfg.header("linux/fcntl.h");
3982         }
3983 
3984         cfg.skip_type(|_| true)
3985             .skip_static(|_| true)
3986             .skip_struct(|_| true)
3987             .skip_fn(|_| true)
3988             .skip_const(move |name| match name {
3989                 // test fcntl constants:
3990                 "F_CANCELLK" | "F_ADD_SEALS" | "F_GET_SEALS" | "F_SEAL_SEAL" | "F_SEAL_SHRINK"
3991                 | "F_SEAL_GROW" | "F_SEAL_WRITE" => false,
3992                 _ => true,
3993             })
3994             .type_name(move |ty, is_struct, is_union| match ty {
3995                 t if is_struct => format!("struct {}", t),
3996                 t if is_union => format!("union {}", t),
3997                 t => t.to_string(),
3998             });
3999 
4000         cfg.generate("../src/lib.rs", "linux_fcntl.rs");
4001     }
4002 
4003     if linux || android {
4004         // test termios
4005         let mut cfg = ctest_cfg();
4006         cfg.header("asm/termbits.h");
4007         cfg.header("linux/termios.h");
4008         cfg.skip_type(|_| true)
4009             .skip_static(|_| true)
4010             .skip_fn(|_| true)
4011             .skip_const(|c| match c {
4012                 "BOTHER" | "IBSHIFT" => false,
4013                 "TCGETS2" | "TCSETS2" | "TCSETSW2" | "TCSETSF2" => false,
4014                 _ => true,
4015             })
4016             .skip_struct(|s| s != "termios2")
4017             .type_name(move |ty, is_struct, is_union| match ty {
4018                 "Ioctl" if gnu => "unsigned long".to_string(),
4019                 "Ioctl" => "int".to_string(),
4020                 t if is_struct => format!("struct {}", t),
4021                 t if is_union => format!("union {}", t),
4022                 t => t.to_string(),
4023             });
4024         cfg.generate("../src/lib.rs", "linux_termios.rs");
4025     }
4026 
4027     if linux || android {
4028         // test IPV6_ constants:
4029         let mut cfg = ctest_cfg();
4030         headers! {
4031             cfg:
4032             "linux/in6.h"
4033         }
4034         cfg.skip_type(|_| true)
4035             .skip_static(|_| true)
4036             .skip_fn(|_| true)
4037             .skip_const(|_| true)
4038             .skip_struct(|_| true)
4039             .skip_const(move |name| match name {
4040                 "IPV6_FLOWINFO"
4041                 | "IPV6_FLOWLABEL_MGR"
4042                 | "IPV6_FLOWINFO_SEND"
4043                 | "IPV6_FLOWINFO_FLOWLABEL"
4044                 | "IPV6_FLOWINFO_PRIORITY" => false,
4045                 _ => true,
4046             })
4047             .type_name(move |ty, is_struct, is_union| match ty {
4048                 t if is_struct => format!("struct {}", t),
4049                 t if is_union => format!("union {}", t),
4050                 t => t.to_string(),
4051             });
4052         cfg.generate("../src/lib.rs", "linux_ipv6.rs");
4053     }
4054 
4055     if linux || android {
4056         // Test Elf64_Phdr and Elf32_Phdr
4057         // These types have a field called `p_type`, but including
4058         // "resolve.h" defines a `p_type` macro that expands to `__p_type`
4059         // making the tests for these fails when both are included.
4060         let mut cfg = ctest_cfg();
4061         cfg.header("elf.h");
4062         cfg.skip_fn(|_| true)
4063             .skip_static(|_| true)
4064             .skip_const(|_| true)
4065             .type_name(move |ty, _is_struct, _is_union| ty.to_string())
4066             .skip_struct(move |ty| match ty {
4067                 "Elf64_Phdr" | "Elf32_Phdr" => false,
4068                 _ => true,
4069             })
4070             .skip_type(move |ty| match ty {
4071                 "Elf64_Phdr" | "Elf32_Phdr" => false,
4072                 _ => true,
4073             });
4074         cfg.generate("../src/lib.rs", "linux_elf.rs");
4075     }
4076 
4077     if linux || android {
4078         // Test `ARPHRD_CAN`.
4079         let mut cfg = ctest_cfg();
4080         cfg.header("linux/if_arp.h");
4081         cfg.skip_fn(|_| true)
4082             .skip_static(|_| true)
4083             .skip_const(move |name| match name {
4084                 "ARPHRD_CAN" => false,
4085                 _ => true,
4086             })
4087             .skip_struct(|_| true)
4088             .skip_type(|_| true);
4089         cfg.generate("../src/lib.rs", "linux_if_arp.rs");
4090     }
4091 }
4092 
4093 fn which_freebsd() -> Option<i32> {
4094     let output = std::process::Command::new("freebsd-version")
4095         .output()
4096         .ok()?;
4097     if !output.status.success() {
4098         return None;
4099     }
4100 
4101     let stdout = String::from_utf8(output.stdout).ok()?;
4102 
4103     match &stdout {
4104         s if s.starts_with("10") => Some(10),
4105         s if s.starts_with("11") => Some(11),
4106         s if s.starts_with("12") => Some(12),
4107         s if s.starts_with("13") => Some(13),
4108         s if s.starts_with("14") => Some(14),
4109         _ => None,
4110     }
4111 }
4112 
4113 fn test_haiku(target: &str) {
4114     assert!(target.contains("haiku"));
4115 
4116     let mut cfg = ctest_cfg();
4117     cfg.flag("-Wno-deprecated-declarations");
4118     cfg.define("__USE_GNU", Some("1"));
4119     cfg.define("_GNU_SOURCE", None);
4120     cfg.language(ctest::Lang::CXX);
4121 
4122     // POSIX API
4123     headers! { cfg:
4124                "alloca.h",
4125                "arpa/inet.h",
4126                "arpa/nameser.h",
4127                "arpa/nameser_compat.h",
4128                "assert.h",
4129                "complex.h",
4130                "ctype.h",
4131                "dirent.h",
4132                "div_t.h",
4133                "dlfcn.h",
4134                "endian.h",
4135                "errno.h",
4136                "fcntl.h",
4137                "fenv.h",
4138                "fnmatch.h",
4139                "fts.h",
4140                "ftw.h",
4141                "getopt.h",
4142                "glob.h",
4143                "grp.h",
4144                "inttypes.h",
4145                "iovec.h",
4146                "langinfo.h",
4147                "libgen.h",
4148                "libio.h",
4149                "limits.h",
4150                "locale.h",
4151                "malloc.h",
4152                "malloc_debug.h",
4153                "math.h",
4154                "memory.h",
4155                "monetary.h",
4156                "net/if.h",
4157                "net/if_dl.h",
4158                "net/if_media.h",
4159                "net/if_tun.h",
4160                "net/if_types.h",
4161                "net/route.h",
4162                "netdb.h",
4163                "netinet/in.h",
4164                "netinet/ip.h",
4165                "netinet/ip6.h",
4166                "netinet/ip_icmp.h",
4167                "netinet/ip_var.h",
4168                "netinet/tcp.h",
4169                "netinet/udp.h",
4170                "netinet6/in6.h",
4171                "nl_types.h",
4172                "null.h",
4173                "poll.h",
4174                "pthread.h",
4175                "pwd.h",
4176                "regex.h",
4177                "resolv.h",
4178                "sched.h",
4179                "search.h",
4180                "semaphore.h",
4181                "setjmp.h",
4182                "shadow.h",
4183                "signal.h",
4184                "size_t.h",
4185                "spawn.h",
4186                "stdint.h",
4187                "stdio.h",
4188                "stdlib.h",
4189                "string.h",
4190                "strings.h",
4191                "sys/cdefs.h",
4192                "sys/file.h",
4193                "sys/ioctl.h",
4194                "sys/ipc.h",
4195                "sys/mman.h",
4196                "sys/msg.h",
4197                "sys/param.h",
4198                "sys/poll.h",
4199                "sys/resource.h",
4200                "sys/select.h",
4201                "sys/sem.h",
4202                "sys/socket.h",
4203                "sys/sockio.h",
4204                "sys/stat.h",
4205                "sys/statvfs.h",
4206                "sys/time.h",
4207                "sys/timeb.h",
4208                "sys/times.h",
4209                "sys/types.h",
4210                "sys/uio.h",
4211                "sys/un.h",
4212                "sys/utsname.h",
4213                "sys/wait.h",
4214                "syslog.h",
4215                "tar.h",
4216                "termios.h",
4217                "time.h",
4218                "uchar.h",
4219                "unistd.h",
4220                "utime.h",
4221                "utmpx.h",
4222                "wchar.h",
4223                "wchar_t.h",
4224                "wctype.h"
4225     }
4226 
4227     // BSD Extensions
4228     headers! { cfg:
4229                "ifaddrs.h",
4230                "libutil.h",
4231                "link.h",
4232                "pty.h",
4233                "stringlist.h",
4234     }
4235 
4236     // Native API
4237     headers! { cfg:
4238                "kernel/OS.h",
4239                "kernel/fs_attr.h",
4240                "kernel/fs_index.h",
4241                "kernel/fs_info.h",
4242                "kernel/fs_query.h",
4243                "kernel/fs_volume.h",
4244                "kernel/image.h",
4245                "kernel/scheduler.h",
4246                "storage/FindDirectory.h",
4247                "storage/StorageDefs.h",
4248                "support/Errors.h",
4249                "support/SupportDefs.h",
4250                "support/TypeConstants.h"
4251     }
4252 
4253     cfg.skip_struct(move |ty| {
4254         if ty.starts_with("__c_anonymous_") {
4255             return true;
4256         }
4257         match ty {
4258             // FIXME: actually a union
4259             "sigval" => true,
4260             // FIXME: locale_t does not exist on Haiku
4261             "locale_t" => true,
4262             // FIXME: rusage has a different layout on Haiku
4263             "rusage" => true,
4264             // FIXME?: complains that rust aligns on 4 byte boundary, but
4265             //         Haiku does not align it at all.
4266             "in6_addr" => true,
4267             // The d_name attribute is an array of 1 on Haiku, with the
4268             // intention that the developer allocates a larger or smaller
4269             // piece of memory depending on the expected/actual size of the name.
4270             // Other platforms have sensible defaults. In Rust, the d_name field
4271             // is sized as the _POSIX_MAX_PATH, so that path names will fit in
4272             // newly allocated dirent objects. This breaks the automated tests.
4273             "dirent" => true,
4274             // The following structs contain function pointers, which cannot be initialized
4275             // with mem::zeroed(), so skip the automated test
4276             "image_info" | "thread_info" => true,
4277 
4278             "Elf64_Phdr" => true,
4279 
4280             // is an union
4281             "cpuid_info" => true,
4282 
4283             _ => false,
4284         }
4285     });
4286 
4287     cfg.skip_type(move |ty| {
4288         match ty {
4289             // FIXME: locale_t does not exist on Haiku
4290             "locale_t" => true,
4291             // These cause errors, to be reviewed in the future
4292             "sighandler_t" => true,
4293             "pthread_t" => true,
4294             "pthread_condattr_t" => true,
4295             "pthread_mutexattr_t" => true,
4296             "pthread_rwlockattr_t" => true,
4297             _ => false,
4298         }
4299     });
4300 
4301     cfg.skip_fn(move |name| {
4302         // skip those that are manually verified
4303         match name {
4304             // FIXME: https://github.com/rust-lang/libc/issues/1272
4305             "execv" | "execve" | "execvp" | "execvpe" => true,
4306             // FIXME: does not exist on haiku
4307             "open_wmemstream" => true,
4308             "mlockall" | "munlockall" => true,
4309             "tcgetsid" => true,
4310             "cfsetspeed" => true,
4311             // ignore for now, will be part of Haiku R1 beta 3
4312             "mlock" | "munlock" => true,
4313             // returns const char * on Haiku
4314             "strsignal" => true,
4315             // uses an enum as a parameter argument, which is incorrectly
4316             // translated into a struct argument
4317             "find_path" => true,
4318 
4319             "get_cpuid" => true,
4320 
4321             // uses varargs parameter
4322             "ioctl" => true,
4323 
4324             _ => false,
4325         }
4326     });
4327 
4328     cfg.skip_const(move |name| {
4329         match name {
4330             // FIXME: these constants do not exist on Haiku
4331             "DT_UNKNOWN" | "DT_FIFO" | "DT_CHR" | "DT_DIR" | "DT_BLK" | "DT_REG" | "DT_LNK"
4332             | "DT_SOCK" => true,
4333             "USRQUOTA" | "GRPQUOTA" => true,
4334             "SIGIOT" => true,
4335             "ARPOP_REQUEST" | "ARPOP_REPLY" | "ATF_COM" | "ATF_PERM" | "ATF_PUBL"
4336             | "ATF_USETRAILERS" => true,
4337             // Haiku does not have MAP_FILE, but rustc requires it
4338             "MAP_FILE" => true,
4339             // The following does not exist on Haiku but is required by
4340             // several crates
4341             "FIOCLEX" => true,
4342             // just skip this one, it is not defined on Haiku beta 2 but
4343             // since it is meant as a mask and not a parameter it can exist
4344             // here
4345             "LOG_PRIMASK" => true,
4346             // not defined on Haiku, but [get|set]priority is, so they are
4347             // useful
4348             "PRIO_MIN" | "PRIO_MAX" => true,
4349             //
4350             _ => false,
4351         }
4352     });
4353 
4354     cfg.skip_field(move |struct_, field| {
4355         match (struct_, field) {
4356             // FIXME: the stat struct actually has timespec members, whereas
4357             //        the current representation has these unpacked.
4358             ("stat", "st_atime") => true,
4359             ("stat", "st_atime_nsec") => true,
4360             ("stat", "st_mtime") => true,
4361             ("stat", "st_mtime_nsec") => true,
4362             ("stat", "st_ctime") => true,
4363             ("stat", "st_ctime_nsec") => true,
4364             ("stat", "st_crtime") => true,
4365             ("stat", "st_crtime_nsec") => true,
4366 
4367             // these are actually unions, but we cannot represent it well
4368             ("siginfo_t", "sigval") => true,
4369             ("sem_t", "named_sem_id") => true,
4370             ("sigaction", "sa_sigaction") => true,
4371             ("sigevent", "sigev_value") => true,
4372             ("fpu_state", "_fpreg") => true,
4373             // these fields have a simplified data definition in libc
4374             ("fpu_state", "_xmm") => true,
4375             ("savefpu", "_fp_ymm") => true,
4376 
4377             // skip these enum-type fields
4378             ("thread_info", "state") => true,
4379             ("image_info", "image_type") => true,
4380             _ => false,
4381         }
4382     });
4383 
4384     cfg.skip_roundtrip(move |s| match s {
4385         // FIXME: for some reason the roundtrip check fails for cpu_info
4386         "cpu_info" => true,
4387         _ => false,
4388     });
4389 
4390     cfg.type_name(move |ty, is_struct, is_union| {
4391         match ty {
4392             // Just pass all these through, no need for a "struct" prefix
4393             "area_info" | "port_info" | "port_message_info" | "team_info" | "sem_info"
4394             | "team_usage_info" | "thread_info" | "cpu_info" | "system_info"
4395             | "object_wait_info" | "image_info" | "attr_info" | "index_info" | "fs_info"
4396             | "FILE" | "DIR" | "Dl_info" => ty.to_string(),
4397 
4398             // enums don't need a prefix
4399             "directory_which" | "path_base_directory" => ty.to_string(),
4400 
4401             // is actually a union
4402             "sigval" => format!("union sigval"),
4403             t if is_union => format!("union {}", t),
4404             t if t.ends_with("_t") => t.to_string(),
4405             t if is_struct => format!("struct {}", t),
4406             t => t.to_string(),
4407         }
4408     });
4409 
4410     cfg.field_name(move |struct_, field| {
4411         match field {
4412             // Field is named `type` in C but that is a Rust keyword,
4413             // so these fields are translated to `type_` in the bindings.
4414             "type_" if struct_ == "object_wait_info" => "type".to_string(),
4415             "type_" if struct_ == "sem_t" => "type".to_string(),
4416             "type_" if struct_ == "attr_info" => "type".to_string(),
4417             "type_" if struct_ == "index_info" => "type".to_string(),
4418             "image_type" if struct_ == "image_info" => "type".to_string(),
4419             s => s.to_string(),
4420         }
4421     });
4422     cfg.generate("../src/lib.rs", "main.rs");
4423 }
4424