xref: /rust-libc-0.2.174/libc-test/build.rs (revision 0b2ed161)
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             // kernel 5.18 minimum
1792             | "MADV_COLD"
1793             | "MADV_DONTNEED_LOCKED"
1794             | "MADV_PAGEOUT"
1795             | "MADV_POPULATE_READ"
1796             | "MADV_POPULATE_WRITE" => true,
1797 
1798             // kernel 5.6 minimum required
1799             "IPPROTO_MPTCP" => true,
1800 
1801             _ => false,
1802         }
1803     });
1804 
1805     cfg.skip_fn(move |name| {
1806         // skip those that are manually verified
1807         match name {
1808             // FIXME: https://github.com/rust-lang/libc/issues/1272
1809             "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
1810 
1811             // There are two versions of the sterror_r function, see
1812             //
1813             // https://linux.die.net/man/3/strerror_r
1814             //
1815             // An XSI-compliant version provided if:
1816             //
1817             // (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && ! _GNU_SOURCE
1818             //
1819             // and a GNU specific version provided if _GNU_SOURCE is defined.
1820             //
1821             // libc provides bindings for the XSI-compliant version, which is
1822             // preferred for portable applications.
1823             //
1824             // We skip the test here since here _GNU_SOURCE is defined, and
1825             // test the XSI version below.
1826             "strerror_r" => true,
1827             "reallocarray" => true,
1828             "__system_property_wait" => true,
1829 
1830             // Added in API level 30, but tests use level 28.
1831             "mlock2" => true,
1832 
1833             // Added in glibc 2.25.
1834             "getentropy" => true,
1835 
1836             // Added in API level 28, but some tests use level 24.
1837             "getrandom" => true,
1838 
1839             // Added in API level 28, but some tests use level 24.
1840             "syncfs" => true,
1841 
1842             _ => false,
1843         }
1844     });
1845 
1846     cfg.skip_field_type(move |struct_, field| {
1847         // This is a weird union, don't check the type.
1848         (struct_ == "ifaddrs" && field == "ifa_ifu") ||
1849         // sigval is actually a union, but we pretend it's a struct
1850         (struct_ == "sigevent" && field == "sigev_value") ||
1851         // this one is an anonymous union
1852         (struct_ == "ff_effect" && field == "u") ||
1853         // FIXME: `sa_sigaction` has type `sighandler_t` but that type is
1854         // incorrect, see: https://github.com/rust-lang/libc/issues/1359
1855         (struct_ == "sigaction" && field == "sa_sigaction") ||
1856         // signalfd had SIGSYS fields added in Android 4.19, but CI does not have that version yet.
1857         (struct_ == "signalfd_siginfo" && field == "ssi_call_addr")
1858     });
1859 
1860     cfg.skip_field(move |struct_, field| {
1861         // this is actually a union on linux, so we can't represent it well and
1862         // just insert some padding.
1863         (struct_ == "siginfo_t" && field == "_pad") ||
1864         // FIXME: `sa_sigaction` has type `sighandler_t` but that type is
1865         // incorrect, see: https://github.com/rust-lang/libc/issues/1359
1866         (struct_ == "sigaction" && field == "sa_sigaction") ||
1867         // sigev_notify_thread_id is actually part of a sigev_un union
1868         (struct_ == "sigevent" && field == "sigev_notify_thread_id") ||
1869         // signalfd had SIGSYS fields added in Android 4.19, but CI does not have that version yet.
1870         (struct_ == "signalfd_siginfo" && (field == "ssi_syscall" ||
1871                                            field == "ssi_call_addr" ||
1872                                            field == "ssi_arch"))
1873     });
1874 
1875     cfg.skip_field(|struct_, field| {
1876         match (struct_, field) {
1877             // conflicting with `p_type` macro from <resolve.h>.
1878             ("Elf32_Phdr", "p_type") => true,
1879             ("Elf64_Phdr", "p_type") => true,
1880 
1881             // this is actually a union on linux, so we can't represent it well and
1882             // just insert some padding.
1883             ("siginfo_t", "_pad") => true,
1884 
1885             _ => false,
1886         }
1887     });
1888 
1889     cfg.generate("../src/lib.rs", "main.rs");
1890 
1891     test_linux_like_apis(target);
1892 }
1893 
1894 fn test_freebsd(target: &str) {
1895     assert!(target.contains("freebsd"));
1896     let mut cfg = ctest_cfg();
1897 
1898     let freebsd_ver = which_freebsd();
1899 
1900     match freebsd_ver {
1901         Some(12) => cfg.cfg("freebsd12", None),
1902         Some(13) => cfg.cfg("freebsd13", None),
1903         Some(14) => cfg.cfg("freebsd14", None),
1904         _ => &mut cfg,
1905     };
1906 
1907     // For sched linux compat fn
1908     cfg.define("_WITH_CPU_SET_T", None);
1909     // Required for `getline`:
1910     cfg.define("_WITH_GETLINE", None);
1911     // Required for making freebsd11_stat available in the headers
1912     cfg.define("_WANT_FREEBSD11_STAT", None);
1913 
1914     let freebsd13 = match freebsd_ver {
1915         Some(n) if n >= 13 => true,
1916         _ => false,
1917     };
1918 
1919     headers! { cfg:
1920                 "aio.h",
1921                 "arpa/inet.h",
1922                 "bsm/audit.h",
1923                 "ctype.h",
1924                 "dirent.h",
1925                 "dlfcn.h",
1926                 "elf.h",
1927                 "errno.h",
1928                 "execinfo.h",
1929                 "fcntl.h",
1930                 "getopt.h",
1931                 "glob.h",
1932                 "grp.h",
1933                 "iconv.h",
1934                 "ifaddrs.h",
1935                 "langinfo.h",
1936                 "libgen.h",
1937                 "libutil.h",
1938                 "limits.h",
1939                 "link.h",
1940                 "locale.h",
1941                 "machine/elf.h",
1942                 "machine/reg.h",
1943                 "malloc_np.h",
1944                 "memstat.h",
1945                 "mqueue.h",
1946                 "net/bpf.h",
1947                 "net/if.h",
1948                 "net/if_arp.h",
1949                 "net/if_dl.h",
1950                 "net/if_mib.h",
1951                 "net/route.h",
1952                 "netdb.h",
1953                 "netinet/ip.h",
1954                 "netinet/in.h",
1955                 "netinet/sctp.h",
1956                 "netinet/tcp.h",
1957                 "netinet/udp.h",
1958                 "poll.h",
1959                 "pthread.h",
1960                 "pthread_np.h",
1961                 "pwd.h",
1962                 "regex.h",
1963                 "resolv.h",
1964                 "sched.h",
1965                 "semaphore.h",
1966                 "signal.h",
1967                 "spawn.h",
1968                 "stddef.h",
1969                 "stdint.h",
1970                 "stdio.h",
1971                 "stdlib.h",
1972                 "string.h",
1973                 "sys/capsicum.h",
1974                 "sys/auxv.h",
1975                 "sys/cpuset.h",
1976                 "sys/domainset.h",
1977                 "sys/eui64.h",
1978                 "sys/event.h",
1979                 [freebsd13]:"sys/eventfd.h",
1980                 "sys/extattr.h",
1981                 "sys/file.h",
1982                 "sys/ioctl.h",
1983                 "sys/ipc.h",
1984                 "sys/jail.h",
1985                 "sys/mman.h",
1986                 "sys/mount.h",
1987                 "sys/msg.h",
1988                 "sys/procctl.h",
1989                 "sys/procdesc.h",
1990                 "sys/ptrace.h",
1991                 "sys/queue.h",
1992                 "sys/random.h",
1993                 "sys/resource.h",
1994                 "sys/rtprio.h",
1995                 "sys/sem.h",
1996                 "sys/shm.h",
1997                 "sys/socket.h",
1998                 "sys/stat.h",
1999                 "sys/statvfs.h",
2000                 "sys/sysctl.h",
2001                 "sys/thr.h",
2002                 "sys/time.h",
2003                 "sys/times.h",
2004                 "sys/timex.h",
2005                 "sys/types.h",
2006                 "sys/proc.h",
2007                 "kvm.h", // must be after "sys/types.h"
2008                 "sys/ucontext.h",
2009                 "sys/uio.h",
2010                 "sys/ktrace.h",
2011                 "sys/umtx.h",
2012                 "sys/un.h",
2013                 "sys/user.h",
2014                 "sys/utsname.h",
2015                 "sys/uuid.h",
2016                 "sys/vmmeter.h",
2017                 "sys/wait.h",
2018                 "libprocstat.h",
2019                 "devstat.h",
2020                 "syslog.h",
2021                 "termios.h",
2022                 "time.h",
2023                 "ufs/ufs/quota.h",
2024                 "unistd.h",
2025                 "utime.h",
2026                 "utmpx.h",
2027                 "wchar.h",
2028     }
2029 
2030     cfg.type_name(move |ty, is_struct, is_union| {
2031         match ty {
2032             // Just pass all these through, no need for a "struct" prefix
2033             "FILE"
2034             | "fd_set"
2035             | "Dl_info"
2036             | "DIR"
2037             | "Elf32_Phdr"
2038             | "Elf64_Phdr"
2039             | "Elf32_Auxinfo"
2040             | "Elf64_Auxinfo"
2041             | "devstat_select_mode"
2042             | "devstat_support_flags"
2043             | "devstat_type_flags"
2044             | "devstat_match_flags"
2045             | "devstat_priority" => ty.to_string(),
2046 
2047             // FIXME: https://github.com/rust-lang/libc/issues/1273
2048             "sighandler_t" => "sig_t".to_string(),
2049 
2050             t if is_union => format!("union {}", t),
2051 
2052             t if t.ends_with("_t") => t.to_string(),
2053 
2054             // sigval is a struct in Rust, but a union in C:
2055             "sigval" => format!("union sigval"),
2056 
2057             // put `struct` in front of all structs:.
2058             t if is_struct => format!("struct {}", t),
2059 
2060             t => t.to_string(),
2061         }
2062     });
2063 
2064     cfg.field_name(move |struct_, field| {
2065         match field {
2066             // Our stat *_nsec fields normally don't actually exist but are part
2067             // of a timeval struct
2068             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
2069                 s.replace("e_nsec", ".tv_nsec")
2070             }
2071             // Field is named `type` in C but that is a Rust keyword,
2072             // so these fields are translated to `type_` in the bindings.
2073             "type_" if struct_ == "rtprio" => "type".to_string(),
2074             "type_" if struct_ == "sockstat" => "type".to_string(),
2075             "type_" if struct_ == "devstat_match_table" => "type".to_string(),
2076             s => s.to_string(),
2077         }
2078     });
2079 
2080     cfg.skip_const(move |name| {
2081         match name {
2082             // These constants were introduced in FreeBSD 13:
2083             "F_ADD_SEALS" | "F_GET_SEALS" | "F_SEAL_SEAL" | "F_SEAL_SHRINK" | "F_SEAL_GROW"
2084             | "F_SEAL_WRITE"
2085                 if Some(13) > freebsd_ver =>
2086             {
2087                 true
2088             }
2089 
2090             // These constants were introduced in FreeBSD 13:
2091             "EFD_CLOEXEC" | "EFD_NONBLOCK" | "EFD_SEMAPHORE" if Some(13) > freebsd_ver => true,
2092 
2093             // These constants were introduced in FreeBSD 12:
2094             "AT_RESOLVE_BENEATH" | "O_RESOLVE_BENEATH" if Some(12) > freebsd_ver => true,
2095 
2096             // These constants were introduced in FreeBSD 13:
2097             "O_DSYNC" | "O_PATH" | "O_EMPTY_PATH" | "AT_EMPTY_PATH" if Some(13) > freebsd_ver => {
2098                 true
2099             }
2100 
2101             // These aliases were introduced in FreeBSD 13:
2102             // (note however that the constants themselves work on any version)
2103             "CLOCK_BOOTTIME" | "CLOCK_REALTIME_COARSE" | "CLOCK_MONOTONIC_COARSE"
2104                 if Some(13) > freebsd_ver =>
2105             {
2106                 true
2107             }
2108 
2109             // FIXME: These are deprecated - remove in a couple of releases.
2110             // These constants were removed in FreeBSD 11 (svn r273250) but will
2111             // still be accepted and ignored at runtime.
2112             "MAP_RENAME" | "MAP_NORESERVE" => true,
2113 
2114             // FIXME: These are deprecated - remove in a couple of releases.
2115             // These constants were removed in FreeBSD 11 (svn r262489),
2116             // and they've never had any legitimate use outside of the
2117             // base system anyway.
2118             "CTL_MAXID" | "KERN_MAXID" | "HW_MAXID" | "USER_MAXID" => true,
2119 
2120             // FIXME: This is deprecated - remove in a couple of releases.
2121             // This was removed in FreeBSD 14 (git 1b4701fe1e8) and never
2122             // should've been used anywhere anyway.
2123             "TDF_UNUSED23" => true,
2124 
2125             // FIXME: These are deprecated - remove in a couple of releases.
2126             // These symbols are not stable across OS-versions.  They were
2127             // changed for FreeBSD 14 in git revisions b62848b0c3f and
2128             // 2cf7870864e.
2129             "PRI_MAX_ITHD" | "PRI_MIN_REALTIME" | "PRI_MAX_REALTIME" | "PRI_MIN_KERN"
2130             | "PRI_MAX_KERN" | "PSWP" | "PVM" | "PINOD" | "PRIBIO" | "PVFS" | "PZERO" | "PSOCK"
2131             | "PWAIT" | "PLOCK" | "PPAUSE" | "PRI_MIN_TIMESHARE" | "PUSER" | "PI_AV" | "PI_NET"
2132             | "PI_DISK" | "PI_TTY" | "PI_DULL" | "PI_SOFT" => true,
2133 
2134             // This symbol changed in FreeBSD 14 (git 051e7d78b03), but the new
2135             // version should be safe to use on older releases.
2136             "IFCAP_CANTCHANGE" => true,
2137 
2138             // These were removed in FreeBSD 14 (git c6d31b8306e)
2139             "TDF_ASTPENDING" | "TDF_NEEDSUSPCHK" | "TDF_NEEDRESCHED" | "TDF_NEEDSIGCHK"
2140             | "TDF_ALRMPEND" | "TDF_PROFPEND" | "TDF_MACPEND" => true,
2141 
2142             // This constant was removed in FreeBSD 13 (svn r363622), and never
2143             // had any legitimate use outside of the base system anyway.
2144             "CTL_P1003_1B_MAXID" => true,
2145 
2146             // This was renamed in FreeBSD 12.2 and 13 (r352486).
2147             "CTL_UNSPEC" | "CTL_SYSCTL" => true,
2148 
2149             // This was renamed in FreeBSD 12.2 and 13 (r350749).
2150             "IPPROTO_SEP" | "IPPROTO_DCCP" => true,
2151 
2152             // This was changed to 96(0x60) in FreeBSD 13:
2153             // https://github.com/freebsd/freebsd/
2154             // commit/06b00ceaa914a3907e4e27bad924f44612bae1d7
2155             "MINCORE_SUPER" if Some(13) <= freebsd_ver => true,
2156 
2157             // Added in FreeBSD 13.0 (r356667)
2158             "GRND_INSECURE" if Some(13) > freebsd_ver => true,
2159 
2160             // Added in FreeBSD 13.0 (r349609)
2161             "PROC_PROTMAX_CTL"
2162             | "PROC_PROTMAX_STATUS"
2163             | "PROC_PROTMAX_FORCE_ENABLE"
2164             | "PROC_PROTMAX_FORCE_DISABLE"
2165             | "PROC_PROTMAX_NOFORCE"
2166             | "PROC_PROTMAX_ACTIVE"
2167             | "PROC_NO_NEW_PRIVS_CTL"
2168             | "PROC_NO_NEW_PRIVS_STATUS"
2169             | "PROC_NO_NEW_PRIVS_ENABLE"
2170             | "PROC_NO_NEW_PRIVS_DISABLE"
2171             | "PROC_WXMAP_CTL"
2172             | "PROC_WXMAP_STATUS"
2173             | "PROC_WX_MAPPINGS_PERMIT"
2174             | "PROC_WX_MAPPINGS_DISALLOW_EXEC"
2175             | "PROC_WXORX_ENFORCE"
2176                 if Some(13) > freebsd_ver =>
2177             {
2178                 true
2179             }
2180 
2181             // Added in in FreeBSD 13.0 (r367776 and r367287)
2182             "SCM_CREDS2" | "LOCAL_CREDS_PERSISTENT" if Some(13) > freebsd_ver => true,
2183 
2184             // Added in FreeBSD 14
2185             "SPACECTL_DEALLOC" if Some(14) > freebsd_ver => true,
2186 
2187             // Added in FreeBSD 13.
2188             "KERN_PROC_SIGFASTBLK"
2189             | "USER_LOCALBASE"
2190             | "TDP_SIGFASTBLOCK"
2191             | "TDP_UIOHELD"
2192             | "TDP_SIGFASTPENDING"
2193             | "TDP2_COMPAT32RB"
2194             | "P2_PROTMAX_ENABLE"
2195             | "P2_PROTMAX_DISABLE"
2196             | "CTLFLAG_NEEDGIANT"
2197             | "CTL_SYSCTL_NEXTNOSKIP"
2198                 if Some(13) > freebsd_ver =>
2199             {
2200                 true
2201             }
2202 
2203             // Added in freebsd 14.
2204             "IFCAP_MEXTPG" if Some(14) > freebsd_ver => true,
2205             // Added in freebsd 13.
2206             "IFF_KNOWSEPOCH" | "IFCAP_TXTLS4" | "IFCAP_TXTLS6" | "IFCAP_VXLAN_HWCSUM"
2207             | "IFCAP_VXLAN_HWTSO" | "IFCAP_TXTLS_RTLMT" | "IFCAP_TXTLS"
2208                 if Some(13) > freebsd_ver =>
2209             {
2210                 true
2211             }
2212             // Added in FreeBSD 13.
2213             "PS_FST_TYPE_EVENTFD" if Some(13) > freebsd_ver => true,
2214 
2215             // Added in FreeBSD 14.
2216             "MNT_RECURSE" | "MNT_DEFERRED" if Some(14) > freebsd_ver => true,
2217 
2218             // Added in FreeBSD 13.
2219             "MNT_EXTLS" | "MNT_EXTLSCERT" | "MNT_EXTLSCERTUSER" | "MNT_NOCOVER"
2220             | "MNT_EMPTYDIR"
2221                 if Some(13) > freebsd_ver =>
2222             {
2223                 true
2224             }
2225 
2226             // Added in FreeBSD 14.
2227             "PT_COREDUMP" | "PC_ALL" | "PC_COMPRESS" | "PT_GETREGSET" | "PT_SETREGSET"
2228             | "PT_SC_REMOTE"
2229                 if Some(14) > freebsd_ver =>
2230             {
2231                 true
2232             }
2233 
2234             // Added in FreeBSD 14.
2235             "F_KINFO" => true, // FIXME: depends how frequent freebsd 14 is updated on CI, this addition went this week only.
2236             "SHM_RENAME_NOREPLACE"
2237             | "SHM_RENAME_EXCHANGE"
2238             | "SHM_LARGEPAGE_ALLOC_DEFAULT"
2239             | "SHM_LARGEPAGE_ALLOC_NOWAIT"
2240             | "SHM_LARGEPAGE_ALLOC_HARD"
2241             | "MFD_CLOEXEC"
2242             | "MFD_ALLOW_SEALING"
2243             | "MFD_HUGETLB"
2244             | "MFD_HUGE_MASK"
2245             | "MFD_HUGE_64KB"
2246             | "MFD_HUGE_512KB"
2247             | "MFD_HUGE_1MB"
2248             | "MFD_HUGE_2MB"
2249             | "MFD_HUGE_8MB"
2250             | "MFD_HUGE_16MB"
2251             | "MFD_HUGE_32MB"
2252             | "MFD_HUGE_256MB"
2253             | "MFD_HUGE_512MB"
2254             | "MFD_HUGE_1GB"
2255             | "MFD_HUGE_2GB"
2256             | "MFD_HUGE_16GB"
2257                 if Some(13) > freebsd_ver =>
2258             {
2259                 true
2260             }
2261 
2262             // Flags introduced in FreeBSD 14.
2263             "TCP_MAXUNACKTIME"
2264             | "TCP_MAXPEAKRATE"
2265             | "TCP_IDLE_REDUCE"
2266             | "TCP_REMOTE_UDP_ENCAPS_PORT"
2267             | "TCP_DELACK"
2268             | "TCP_FIN_IS_RST"
2269             | "TCP_LOG_LIMIT"
2270             | "TCP_SHARED_CWND_ALLOWED"
2271             | "TCP_PROC_ACCOUNTING"
2272             | "TCP_USE_CMP_ACKS"
2273             | "TCP_PERF_INFO"
2274             | "TCP_LRD"
2275                 if Some(14) > freebsd_ver =>
2276             {
2277                 true
2278             }
2279 
2280             // Added in FreeBSD 14
2281             "LIO_READV" | "LIO_WRITEV" | "LIO_VECTORED" if Some(14) > freebsd_ver => true,
2282 
2283             // Added in FreeBSD 13
2284             "FIOSSHMLPGCNF" if Some(13) > freebsd_ver => true,
2285 
2286             // Added in FreeBSD 14
2287             "IFCAP_NV" if Some(14) > freebsd_ver => true,
2288 
2289             // FIXME: Removed in https://reviews.freebsd.org/D38574 and https://reviews.freebsd.org/D38822
2290             // We maybe should deprecate them once a stable release ships them.
2291             "IP_BINDMULTI" | "IP_RSS_LISTEN_BUCKET" => true,
2292 
2293             // FIXME: Removed in https://reviews.freebsd.org/D39127.
2294             "KERN_VNODE" => true,
2295 
2296             // Added in FreeBSD 14
2297             "EV_KEEPUDATA" if Some(14) > freebsd_ver => true,
2298 
2299             // Added in FreeBSD 13.2
2300             "AT_USRSTACKBASE" | "AT_USRSTACKLIM" if Some(13) > freebsd_ver => true,
2301 
2302             _ => false,
2303         }
2304     });
2305 
2306     cfg.skip_type(move |ty| {
2307         match ty {
2308             // the struct "__kvm" is quite tricky to bind so since we only use a pointer to it
2309             // for now, it doesn't matter too much...
2310             "kvm_t" => true,
2311 
2312             _ => false,
2313         }
2314     });
2315 
2316     cfg.skip_struct(move |ty| {
2317         if ty.starts_with("__c_anonymous_") {
2318             return true;
2319         }
2320         match ty {
2321             // `procstat` is a private struct
2322             "procstat" => true,
2323 
2324             // `spacectl_range` was introduced in FreeBSD 14
2325             "spacectl_range" if Some(14) > freebsd_ver => true,
2326 
2327             // `ptrace_coredump` introduced in FreeBSD 14.
2328             "ptrace_coredump" if Some(14) > freebsd_ver => true,
2329             // `ptrace_sc_remote` introduced in FreeBSD 14.
2330             "ptrace_sc_remote" if Some(14) > freebsd_ver => true,
2331 
2332             // `sockcred2` is not available in FreeBSD 12.
2333             "sockcred2" if Some(13) > freebsd_ver => true,
2334             // `shm_largepage_conf` was introduced in FreeBSD 13.
2335             "shm_largepage_conf" if Some(13) > freebsd_ver => true,
2336 
2337             // Those are private types
2338             "memory_type" => true,
2339             "memory_type_list" => true,
2340             "pidfh" => true,
2341             "sctp_gen_error_cause"
2342             | "sctp_error_missing_param"
2343             | "sctp_remote_error"
2344             | "sctp_assoc_change"
2345             | "sctp_send_failed_event"
2346             | "sctp_stream_reset_event" => true,
2347 
2348             _ => false,
2349         }
2350     });
2351 
2352     cfg.skip_fn(move |name| {
2353         // skip those that are manually verified
2354         match name {
2355             // FIXME: https://github.com/rust-lang/libc/issues/1272
2356             "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
2357 
2358             // The `uname` function in the `utsname.h` FreeBSD header is a C
2359             // inline function (has no symbol) that calls the `__xuname` symbol.
2360             // Therefore the function pointer comparison does not make sense for it.
2361             "uname" => true,
2362 
2363             // FIXME: Our API is unsound. The Rust API allows aliasing
2364             // pointers, but the C API requires pointers not to alias.
2365             // We should probably be at least using `&`/`&mut` here, see:
2366             // https://github.com/gnzlbg/ctest/issues/68
2367             "lio_listio" => true,
2368 
2369             // Those are introduced in FreeBSD 12.
2370             "clock_nanosleep" | "getrandom" | "elf_aux_info" | "setproctitle_fast"
2371             | "timingsafe_bcmp" | "timingsafe_memcmp"
2372                 if Some(12) > freebsd_ver =>
2373             {
2374                 true
2375             }
2376 
2377             // Those are introduced in FreeBSD 13.
2378             "memfd_create"
2379             | "shm_create_largepage"
2380             | "shm_rename"
2381             | "getentropy"
2382             | "eventfd"
2383             | "SOCKCRED2SIZE"
2384             | "getlocalbase"
2385             | "aio_readv"
2386             | "aio_writev"
2387             | "copy_file_range"
2388                 if Some(13) > freebsd_ver =>
2389             {
2390                 true
2391             }
2392 
2393             // Those are introduced in FreeBSD 14.
2394             "sched_getaffinity" | "sched_setaffinity" | "sched_getcpu" | "fspacectl"
2395                 if Some(14) > freebsd_ver =>
2396             {
2397                 true
2398             }
2399 
2400             _ => false,
2401         }
2402     });
2403 
2404     cfg.volatile_item(|i| {
2405         use ctest::VolatileItemKind::*;
2406         match i {
2407             // aio_buf is a volatile void** but since we cannot express that in
2408             // Rust types, we have to explicitly tell the checker about it here:
2409             StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => true,
2410             _ => false,
2411         }
2412     });
2413 
2414     cfg.skip_field(move |struct_, field| {
2415         match (struct_, field) {
2416             // FIXME: `sa_sigaction` has type `sighandler_t` but that type is
2417             // incorrect, see: https://github.com/rust-lang/libc/issues/1359
2418             ("sigaction", "sa_sigaction") => true,
2419 
2420             // conflicting with `p_type` macro from <resolve.h>.
2421             ("Elf32_Phdr", "p_type") => true,
2422             ("Elf64_Phdr", "p_type") => true,
2423 
2424             // not available until FreeBSD 12, and is an anonymous union there.
2425             ("xucred", "cr_pid__c_anonymous_union") => true,
2426 
2427             // m_owner field is a volatile __lwpid_t
2428             ("umutex", "m_owner") => true,
2429             // c_has_waiters field is a volatile int32_t
2430             ("ucond", "c_has_waiters") => true,
2431             // is PATH_MAX long but tests can't accept multi array as equivalent.
2432             ("kinfo_vmentry", "kve_path") => true,
2433 
2434             // a_un field is a union
2435             ("Elf32_Auxinfo", "a_un") => true,
2436             ("Elf64_Auxinfo", "a_un") => true,
2437 
2438             // union fields
2439             ("if_data", "__ifi_epoch") => true,
2440             ("if_data", "__ifi_lastchange") => true,
2441             ("ifreq", "ifr_ifru") => true,
2442             ("ifconf", "ifc_ifcu") => true,
2443 
2444             // anonymous struct
2445             ("devstat", "dev_links") => true,
2446 
2447             // FIXME: structs too complicated to bind for now...
2448             ("kinfo_proc", "ki_paddr") => true,
2449             ("kinfo_proc", "ki_addr") => true,
2450             ("kinfo_proc", "ki_tracep") => true,
2451             ("kinfo_proc", "ki_textvp") => true,
2452             ("kinfo_proc", "ki_fd") => true,
2453             ("kinfo_proc", "ki_vmspace") => true,
2454             ("kinfo_proc", "ki_pcb") => true,
2455             ("kinfo_proc", "ki_tdaddr") => true,
2456             ("kinfo_proc", "ki_pd") => true,
2457 
2458             // Anonymous type.
2459             ("filestat", "next") => true,
2460 
2461             // We ignore this field because we needed to use a hack in order to make rust 1.19
2462             // happy...
2463             ("kinfo_proc", "ki_sparestrings") => true,
2464 
2465             // `__sem_base` is a private struct field
2466             ("semid_ds", "__sem_base") => true,
2467 
2468             // `snap_time` is a `long double`, but it's a nightmare to bind correctly in rust
2469             // for the moment, so it's a best effort thing...
2470             ("statinfo", "snap_time") => true,
2471             ("sctp_sndrcvinfo", "__reserve_pad") => true,
2472             ("sctp_extrcvinfo", "__reserve_pad") => true,
2473             // `tcp_snd_wscale` and `tcp_rcv_wscale` are bitfields
2474             ("tcp_info", "tcp_snd_wscale") => true,
2475             ("tcp_info", "tcp_rcv_wscale") => true,
2476 
2477             _ => false,
2478         }
2479     });
2480 
2481     cfg.generate("../src/lib.rs", "main.rs");
2482 }
2483 
2484 fn test_emscripten(target: &str) {
2485     assert!(target.contains("emscripten"));
2486 
2487     let mut cfg = ctest_cfg();
2488     cfg.define("_GNU_SOURCE", None); // FIXME: ??
2489 
2490     headers! { cfg:
2491                "aio.h",
2492                "ctype.h",
2493                "dirent.h",
2494                "dlfcn.h",
2495                "errno.h",
2496                "fcntl.h",
2497                "glob.h",
2498                "grp.h",
2499                "ifaddrs.h",
2500                "langinfo.h",
2501                "limits.h",
2502                "locale.h",
2503                "malloc.h",
2504                "mntent.h",
2505                "mqueue.h",
2506                "net/ethernet.h",
2507                "net/if.h",
2508                "net/if_arp.h",
2509                "net/route.h",
2510                "netdb.h",
2511                "netinet/in.h",
2512                "netinet/ip.h",
2513                "netinet/tcp.h",
2514                "netinet/udp.h",
2515                "netpacket/packet.h",
2516                "poll.h",
2517                "pthread.h",
2518                "pty.h",
2519                "pwd.h",
2520                "resolv.h",
2521                "sched.h",
2522                "sched.h",
2523                "semaphore.h",
2524                "shadow.h",
2525                "signal.h",
2526                "stddef.h",
2527                "stdint.h",
2528                "stdio.h",
2529                "stdlib.h",
2530                "string.h",
2531                "sys/epoll.h",
2532                "sys/eventfd.h",
2533                "sys/file.h",
2534                "sys/ioctl.h",
2535                "sys/ipc.h",
2536                "sys/mman.h",
2537                "sys/mount.h",
2538                "sys/msg.h",
2539                "sys/personality.h",
2540                "sys/prctl.h",
2541                "sys/ptrace.h",
2542                "sys/quota.h",
2543                "sys/reboot.h",
2544                "sys/resource.h",
2545                "sys/sem.h",
2546                "sys/shm.h",
2547                "sys/signalfd.h",
2548                "sys/socket.h",
2549                "sys/stat.h",
2550                "sys/statvfs.h",
2551                "sys/swap.h",
2552                "sys/syscall.h",
2553                "sys/sysctl.h",
2554                "sys/sysinfo.h",
2555                "sys/time.h",
2556                "sys/timerfd.h",
2557                "sys/times.h",
2558                "sys/types.h",
2559                "sys/uio.h",
2560                "sys/un.h",
2561                "sys/user.h",
2562                "sys/utsname.h",
2563                "sys/vfs.h",
2564                "sys/wait.h",
2565                "sys/xattr.h",
2566                "syslog.h",
2567                "termios.h",
2568                "time.h",
2569                "ucontext.h",
2570                "unistd.h",
2571                "utime.h",
2572                "utmp.h",
2573                "utmpx.h",
2574                "wchar.h",
2575     }
2576 
2577     cfg.type_name(move |ty, is_struct, is_union| {
2578         match ty {
2579             // Just pass all these through, no need for a "struct" prefix
2580             "FILE" | "fd_set" | "Dl_info" | "DIR" => ty.to_string(),
2581 
2582             "os_unfair_lock" => "struct os_unfair_lock_s".to_string(),
2583 
2584             t if is_union => format!("union {}", t),
2585 
2586             t if t.ends_with("_t") => t.to_string(),
2587 
2588             // put `struct` in front of all structs:.
2589             t if is_struct => format!("struct {}", t),
2590 
2591             t => t.to_string(),
2592         }
2593     });
2594 
2595     cfg.field_name(move |struct_, field| {
2596         match field {
2597             // Our stat *_nsec fields normally don't actually exist but are part
2598             // of a timeval struct
2599             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
2600                 s.replace("e_nsec", ".tv_nsec")
2601             }
2602             // FIXME: appears that `epoll_event.data` is an union
2603             "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
2604             s => s.to_string(),
2605         }
2606     });
2607 
2608     cfg.skip_type(move |ty| {
2609         match ty {
2610             // sighandler_t is crazy across platforms
2611             // FIXME: is this necessary?
2612             "sighandler_t" => true,
2613 
2614             // FIXME: The size has been changed due to musl's time64
2615             "time_t" => true,
2616 
2617             _ => false,
2618         }
2619     });
2620 
2621     cfg.skip_struct(move |ty| {
2622         match ty {
2623             // This is actually a union, not a struct
2624             // FIXME: is this necessary?
2625             "sigval" => true,
2626 
2627             // FIXME: It was removed in
2628             // emscripten-core/emscripten@953e414
2629             "pthread_mutexattr_t" => true,
2630 
2631             // FIXME: Investigate why the test fails.
2632             // Skip for now to unblock CI.
2633             "pthread_condattr_t" => true,
2634 
2635             // FIXME: The size has been changed when upgraded to musl 1.2.2
2636             "pthread_mutex_t" => true,
2637 
2638             // FIXME: Lowered from 16 to 8 bytes in
2639             // llvm/llvm-project@d1a96e9
2640             "max_align_t" => true,
2641 
2642             // FIXME: The size has been changed due to time64
2643             "utimbuf" | "timeval" | "timespec" | "rusage" | "itimerval" | "sched_param"
2644             | "stat" | "stat64" | "shmid_ds" | "msqid_ds" => true,
2645 
2646             _ => false,
2647         }
2648     });
2649 
2650     cfg.skip_fn(move |name| {
2651         match name {
2652             // Emscripten does not support fork/exec/wait or any kind of multi-process support
2653             // https://github.com/emscripten-core/emscripten/blob/3.1.30/tools/system_libs.py#L973
2654             "execv" | "execve" | "execvp" | "execvpe" | "fexecve" | "wait4" => true,
2655 
2656             // FIXME: Remove after emscripten-core/emscripten#18492 is released (> 3.1.30).
2657             "clearenv" => true,
2658 
2659             _ => false,
2660         }
2661     });
2662 
2663     cfg.skip_const(move |name| {
2664         match name {
2665             // FIXME: deprecated - SIGNUNUSED was removed in glibc 2.26
2666             // users should use SIGSYS instead
2667             "SIGUNUSED" => true,
2668 
2669             // FIXME: emscripten uses different constants to constructs these
2670             n if n.contains("__SIZEOF_PTHREAD") => true,
2671 
2672             // FIXME: `SYS_gettid` was removed in
2673             // emscripten-core/emscripten@6d6474e
2674             "SYS_gettid" => true,
2675 
2676             // FIXME: These values have been changed
2677             | "POSIX_MADV_DONTNEED" // to 4
2678             | "RLIMIT_NLIMITS" // to 16
2679             | "RLIM_NLIMITS" // to 16
2680             | "IPPROTO_MAX" // to 263
2681             | "F_GETLK" // to 5
2682             | "F_SETLK" // to 6
2683             | "F_SETLKW" // to 7
2684             | "O_TMPFILE" // to 65
2685             | "SIG_IGN" // -1
2686                 => true,
2687 
2688             _ => false,
2689         }
2690     });
2691 
2692     cfg.skip_field_type(move |struct_, field| {
2693         // This is a weird union, don't check the type.
2694         // FIXME: is this necessary?
2695         (struct_ == "ifaddrs" && field == "ifa_ifu") ||
2696         // sighandler_t type is super weird
2697         // FIXME: is this necessary?
2698         (struct_ == "sigaction" && field == "sa_sigaction") ||
2699         // sigval is actually a union, but we pretend it's a struct
2700         // FIXME: is this necessary?
2701         (struct_ == "sigevent" && field == "sigev_value") ||
2702         // aio_buf is "volatile void*" and Rust doesn't understand volatile
2703         // FIXME: is this necessary?
2704         (struct_ == "aiocb" && field == "aio_buf")
2705     });
2706 
2707     cfg.skip_field(move |struct_, field| {
2708         // this is actually a union on linux, so we can't represent it well and
2709         // just insert some padding.
2710         // FIXME: is this necessary?
2711         (struct_ == "siginfo_t" && field == "_pad") ||
2712         // musl names this __dummy1 but it's still there
2713         // FIXME: is this necessary?
2714         (struct_ == "glob_t" && field == "gl_flags") ||
2715         // musl seems to define this as an *anonymous* bitfield
2716         // FIXME: is this necessary?
2717         (struct_ == "statvfs" && field == "__f_unused") ||
2718         // sigev_notify_thread_id is actually part of a sigev_un union
2719         (struct_ == "sigevent" && field == "sigev_notify_thread_id") ||
2720         // signalfd had SIGSYS fields added in Linux 4.18, but no libc release has them yet.
2721         (struct_ == "signalfd_siginfo" && (field == "ssi_addr_lsb" ||
2722                                            field == "_pad2" ||
2723                                            field == "ssi_syscall" ||
2724                                            field == "ssi_call_addr" ||
2725                                            field == "ssi_arch")) ||
2726         // FIXME: After musl 1.1.24, it have only one field `sched_priority`,
2727         // while other fields become reserved.
2728         (struct_ == "sched_param" && [
2729             "sched_ss_low_priority",
2730             "sched_ss_repl_period",
2731             "sched_ss_init_budget",
2732             "sched_ss_max_repl",
2733         ].contains(&field))
2734     });
2735 
2736     // FIXME: test linux like
2737     cfg.generate("../src/lib.rs", "main.rs");
2738 }
2739 
2740 fn test_neutrino(target: &str) {
2741     assert!(target.contains("nto-qnx"));
2742 
2743     let mut cfg = ctest_cfg();
2744 
2745     headers! { cfg:
2746         "ctype.h",
2747         "dirent.h",
2748         "dlfcn.h",
2749         "sys/elf.h",
2750         "fcntl.h",
2751         "glob.h",
2752         "grp.h",
2753         "iconv.h",
2754         "ifaddrs.h",
2755         "limits.h",
2756         "sys/link.h",
2757         "locale.h",
2758         "sys/malloc.h",
2759         "rcheck/malloc.h",
2760         "malloc.h",
2761         "mqueue.h",
2762         "net/if.h",
2763         "net/if_arp.h",
2764         "net/route.h",
2765         "netdb.h",
2766         "netinet/in.h",
2767         "netinet/ip.h",
2768         "netinet/tcp.h",
2769         "netinet/udp.h",
2770         "netinet/ip_var.h",
2771         "sys/poll.h",
2772         "pthread.h",
2773         "pwd.h",
2774         "regex.h",
2775         "resolv.h",
2776         "sys/sched.h",
2777         "sched.h",
2778         "semaphore.h",
2779         "shadow.h",
2780         "signal.h",
2781         "spawn.h",
2782         "stddef.h",
2783         "stdint.h",
2784         "stdio.h",
2785         "stdlib.h",
2786         "string.h",
2787         "sys/sysctl.h",
2788         "sys/file.h",
2789         "sys/inotify.h",
2790         "sys/ioctl.h",
2791         "sys/ipc.h",
2792         "sys/mman.h",
2793         "sys/mount.h",
2794         "sys/msg.h",
2795         "sys/resource.h",
2796         "sys/sem.h",
2797         "sys/socket.h",
2798         "sys/stat.h",
2799         "sys/statvfs.h",
2800         "sys/swap.h",
2801         "sys/termio.h",
2802         "sys/time.h",
2803         "sys/times.h",
2804         "sys/types.h",
2805         "sys/uio.h",
2806         "sys/un.h",
2807         "sys/utsname.h",
2808         "sys/wait.h",
2809         "syslog.h",
2810         "termios.h",
2811         "time.h",
2812         "sys/time.h",
2813         "ucontext.h",
2814         "unistd.h",
2815         "utime.h",
2816         "utmp.h",
2817         "wchar.h",
2818         "aio.h",
2819         "nl_types.h",
2820         "langinfo.h",
2821         "unix.h",
2822         "nbutil.h",
2823         "aio.h",
2824         "net/bpf.h",
2825         "net/if_dl.h",
2826         "sys/syspage.h",
2827 
2828         // TODO: The following header file doesn't appear as part of the default headers
2829         //       found in a standard installation of Neutrino 7.1 SDP.  The structures/
2830         //       functions dependent on it are currently commented out.
2831         //"sys/asyncmsg.h",
2832     }
2833 
2834     // Create and include a header file containing
2835     // items which are not included in any official
2836     // header file.
2837     let internal_header = "internal.h";
2838     let out_dir = env::var("OUT_DIR").unwrap();
2839     cfg.header(internal_header);
2840     cfg.include(&out_dir);
2841     std::fs::write(
2842         out_dir.to_owned() + "/" + internal_header,
2843         "#ifndef __internal_h__
2844         #define __internal_h__
2845         void __my_thread_exit(const void **);
2846         #endif",
2847     )
2848     .unwrap();
2849 
2850     cfg.type_name(move |ty, is_struct, is_union| {
2851         match ty {
2852             // Just pass all these through, no need for a "struct" prefix
2853             "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr" | "Elf64_Phdr" | "Elf32_Shdr"
2854             | "Elf64_Shdr" | "Elf32_Sym" | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr"
2855             | "Elf32_Chdr" | "Elf64_Chdr" | "aarch64_qreg_t" | "syspage_entry_info"
2856             | "syspage_array_info" => ty.to_string(),
2857 
2858             "Ioctl" => "int".to_string(),
2859 
2860             t if is_union => format!("union {}", t),
2861 
2862             t if t.ends_with("_t") => t.to_string(),
2863 
2864             // put `struct` in front of all structs:.
2865             t if is_struct => format!("struct {}", t),
2866 
2867             t => t.to_string(),
2868         }
2869     });
2870 
2871     cfg.field_name(move |_struct_, field| match field {
2872         "type_" => "type".to_string(),
2873 
2874         s => s.to_string(),
2875     });
2876 
2877     cfg.volatile_item(|i| {
2878         use ctest::VolatileItemKind::*;
2879         match i {
2880             // The following fields are volatie but since we cannot express that in
2881             // Rust types, we have to explicitly tell the checker about it here:
2882             StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => true,
2883             StructField(ref n, ref f) if n == "qtime_entry" && f == "nsec_tod_adjust" => true,
2884             StructField(ref n, ref f) if n == "qtime_entry" && f == "nsec" => true,
2885             StructField(ref n, ref f) if n == "qtime_entry" && f == "nsec_stable" => true,
2886             StructField(ref n, ref f) if n == "intrspin" && f == "value" => true,
2887             _ => false,
2888         }
2889     });
2890 
2891     cfg.skip_type(move |ty| {
2892         match ty {
2893             // FIXME: `sighandler_t` type is incorrect, see:
2894             // https://github.com/rust-lang/libc/issues/1359
2895             "sighandler_t" => true,
2896 
2897             // Does not exist in Neutrino
2898             "locale_t" => true,
2899 
2900             _ => false,
2901         }
2902     });
2903 
2904     cfg.skip_struct(move |ty| {
2905         if ty.starts_with("__c_anonymous_") {
2906             return true;
2907         }
2908         match ty {
2909             "Elf64_Phdr" | "Elf32_Phdr" => true,
2910 
2911             // FIXME: This is actually a union, not a struct
2912             "sigval" => true,
2913 
2914             // union
2915             "_channel_connect_attr" => true,
2916 
2917             _ => false,
2918         }
2919     });
2920 
2921     cfg.skip_const(move |name| {
2922         match name {
2923             // These signal "functions" are actually integer values that are casted to a fn ptr
2924             // This causes the compiler to err because of "illegal cast of int to ptr".
2925             "SIG_DFL" => true,
2926             "SIG_IGN" => true,
2927             "SIG_ERR" => true,
2928 
2929             _ => false,
2930         }
2931     });
2932 
2933     cfg.skip_fn(move |name| {
2934         // skip those that are manually verified
2935         match name {
2936             // FIXME: https://github.com/rust-lang/libc/issues/1272
2937             "execv" | "execve" | "execvp" | "execvpe" => true,
2938 
2939             // wrong signature
2940             "signal" => true,
2941 
2942             // wrong signature of callback ptr
2943             "__cxa_atexit" => true,
2944 
2945             // FIXME: Our API is unsound. The Rust API allows aliasing
2946             // pointers, but the C API requires pointers not to alias.
2947             // We should probably be at least using `&`/`&mut` here, see:
2948             // https://github.com/gnzlbg/ctest/issues/68
2949             "lio_listio" => true,
2950 
2951             // 2 fields are actually unions which we're simply representing
2952             // as structures.
2953             "ChannelConnectAttr" => true,
2954 
2955             // fields contains unions
2956             "SignalKillSigval" => true,
2957             "SignalKillSigval_r" => true,
2958 
2959             // Not defined in any headers.  Defined to work around a
2960             // stack unwinding bug.
2961             "__my_thread_exit" => true,
2962 
2963             _ => false,
2964         }
2965     });
2966 
2967     cfg.skip_field_type(move |struct_, field| {
2968         // sigval is actually a union, but we pretend it's a struct
2969         struct_ == "sigevent" && field == "sigev_value" ||
2970         // Anonymous structures
2971         struct_ == "_idle_hook" && field == "time"
2972     });
2973 
2974     cfg.skip_field(move |struct_, field| {
2975         (struct_ == "__sched_param" && field == "reserved") ||
2976         (struct_ == "sched_param" && field == "reserved") ||
2977         (struct_ == "sigevent" && field == "__sigev_un1") || // union
2978         (struct_ == "sigevent" && field == "__sigev_un2") || // union
2979         // sighandler_t type is super weird
2980         (struct_ == "sigaction" && field == "sa_sigaction") ||
2981         // does not exist
2982         (struct_ == "syspage_entry" && field == "__reserved") ||
2983         false // keep me for smaller diffs when something is added above
2984     });
2985 
2986     cfg.skip_static(move |name| (name == "__dso_handle"));
2987 
2988     cfg.generate("../src/lib.rs", "main.rs");
2989 }
2990 
2991 fn test_vxworks(target: &str) {
2992     assert!(target.contains("vxworks"));
2993 
2994     let mut cfg = ctest::TestGenerator::new();
2995     headers! { cfg:
2996                "vxWorks.h",
2997                "yvals.h",
2998                "nfs/nfsCommon.h",
2999                "rtpLibCommon.h",
3000                "randomNumGen.h",
3001                "taskLib.h",
3002                "sysLib.h",
3003                "ioLib.h",
3004                "inetLib.h",
3005                "socket.h",
3006                "errnoLib.h",
3007                "ctype.h",
3008                "dirent.h",
3009                "dlfcn.h",
3010                "elf.h",
3011                "fcntl.h",
3012                "grp.h",
3013                "sys/poll.h",
3014                "ifaddrs.h",
3015                "langinfo.h",
3016                "limits.h",
3017                "link.h",
3018                "locale.h",
3019                "sys/stat.h",
3020                "netdb.h",
3021                "pthread.h",
3022                "pwd.h",
3023                "sched.h",
3024                "semaphore.h",
3025                "signal.h",
3026                "stddef.h",
3027                "stdint.h",
3028                "stdio.h",
3029                "stdlib.h",
3030                "string.h",
3031                "sys/file.h",
3032                "sys/ioctl.h",
3033                "sys/socket.h",
3034                "sys/time.h",
3035                "sys/times.h",
3036                "sys/types.h",
3037                "sys/uio.h",
3038                "sys/un.h",
3039                "sys/utsname.h",
3040                "sys/wait.h",
3041                "netinet/tcp.h",
3042                "syslog.h",
3043                "termios.h",
3044                "time.h",
3045                "ucontext.h",
3046                "unistd.h",
3047                "utime.h",
3048                "wchar.h",
3049                "errno.h",
3050                "sys/mman.h",
3051                "pathLib.h",
3052                "mqueue.h",
3053     }
3054     // FIXME
3055     cfg.skip_const(move |name| match name {
3056         // sighandler_t weirdness
3057         "SIG_DFL" | "SIG_ERR" | "SIG_IGN"
3058         // This is not defined in vxWorks
3059         | "RTLD_DEFAULT"   => true,
3060         _ => false,
3061     });
3062     // FIXME
3063     cfg.skip_type(move |ty| match ty {
3064         "stat64" | "sighandler_t" | "off64_t" => true,
3065         _ => false,
3066     });
3067 
3068     cfg.skip_field_type(move |struct_, field| match (struct_, field) {
3069         ("siginfo_t", "si_value") | ("stat", "st_size") | ("sigaction", "sa_u") => true,
3070         _ => false,
3071     });
3072 
3073     cfg.skip_roundtrip(move |s| match s {
3074         _ => false,
3075     });
3076 
3077     cfg.type_name(move |ty, is_struct, is_union| match ty {
3078         "DIR" | "FILE" | "Dl_info" | "RTP_DESC" => ty.to_string(),
3079         t if is_union => format!("union {}", t),
3080         t if t.ends_with("_t") => t.to_string(),
3081         t if is_struct => format!("struct {}", t),
3082         t => t.to_string(),
3083     });
3084 
3085     // FIXME
3086     cfg.skip_fn(move |name| match name {
3087         // sigval
3088         "sigqueue" | "_sigqueue"
3089         // sighandler_t
3090         | "signal"
3091         // not used in static linking by default
3092         | "dlerror" => true,
3093         _ => false,
3094     });
3095 
3096     cfg.generate("../src/lib.rs", "main.rs");
3097 }
3098 
3099 fn test_linux(target: &str) {
3100     assert!(target.contains("linux"));
3101 
3102     // target_env
3103     let gnu = target.contains("gnu");
3104     let musl = target.contains("musl") || target.contains("ohos");
3105     let uclibc = target.contains("uclibc");
3106 
3107     match (gnu, musl, uclibc) {
3108         (true, false, false) => (),
3109         (false, true, false) => (),
3110         (false, false, true) => (),
3111         (_, _, _) => panic!(
3112             "linux target lib is gnu: {}, musl: {}, uclibc: {}",
3113             gnu, musl, uclibc
3114         ),
3115     }
3116 
3117     let arm = target.contains("arm");
3118     let i686 = target.contains("i686");
3119     let mips = target.contains("mips");
3120     let mips32 = mips && !target.contains("64");
3121     let mips64 = mips && target.contains("64");
3122     let ppc = target.contains("powerpc");
3123     let ppc64 = target.contains("powerpc64");
3124     let s390x = target.contains("s390x");
3125     let sparc64 = target.contains("sparc64");
3126     let x32 = target.contains("x32");
3127     let x86_32 = target.contains("i686");
3128     let x86_64 = target.contains("x86_64");
3129     let aarch64_musl = target.contains("aarch64") && musl;
3130     let gnueabihf = target.contains("gnueabihf");
3131     let x86_64_gnux32 = target.contains("gnux32") && x86_64;
3132     let riscv64 = target.contains("riscv64");
3133     let uclibc = target.contains("uclibc");
3134 
3135     let mut cfg = ctest_cfg();
3136     cfg.define("_GNU_SOURCE", None);
3137     // This macro re-deifnes fscanf,scanf,sscanf to link to the symbols that are
3138     // deprecated since glibc >= 2.29. This allows Rust binaries to link against
3139     // glibc versions older than 2.29.
3140     cfg.define("__GLIBC_USE_DEPRECATED_SCANF", None);
3141 
3142     headers! { cfg:
3143                "ctype.h",
3144                "dirent.h",
3145                "dlfcn.h",
3146                "elf.h",
3147                "fcntl.h",
3148                "getopt.h",
3149                "glob.h",
3150                [gnu]: "gnu/libc-version.h",
3151                "grp.h",
3152                "iconv.h",
3153                "ifaddrs.h",
3154                "langinfo.h",
3155                "libgen.h",
3156                "limits.h",
3157                "link.h",
3158                "locale.h",
3159                "malloc.h",
3160                "mntent.h",
3161                "mqueue.h",
3162                "net/ethernet.h",
3163                "net/if.h",
3164                "net/if_arp.h",
3165                "net/route.h",
3166                "netdb.h",
3167                "netinet/in.h",
3168                "netinet/ip.h",
3169                "netinet/tcp.h",
3170                "netinet/udp.h",
3171                "netpacket/packet.h",
3172                "poll.h",
3173                "pthread.h",
3174                "pty.h",
3175                "pwd.h",
3176                "regex.h",
3177                "resolv.h",
3178                "sched.h",
3179                "semaphore.h",
3180                "shadow.h",
3181                "signal.h",
3182                "spawn.h",
3183                "stddef.h",
3184                "stdint.h",
3185                "stdio.h",
3186                "stdlib.h",
3187                "string.h",
3188                "sys/epoll.h",
3189                "sys/eventfd.h",
3190                "sys/file.h",
3191                "sys/fsuid.h",
3192                "sys/inotify.h",
3193                "sys/ioctl.h",
3194                "sys/ipc.h",
3195                "sys/mman.h",
3196                "sys/mount.h",
3197                "sys/msg.h",
3198                "sys/personality.h",
3199                "sys/prctl.h",
3200                "sys/ptrace.h",
3201                "sys/quota.h",
3202                "sys/random.h",
3203                "sys/reboot.h",
3204                "sys/resource.h",
3205                "sys/sem.h",
3206                "sys/sendfile.h",
3207                "sys/shm.h",
3208                "sys/signalfd.h",
3209                "sys/socket.h",
3210                "sys/stat.h",
3211                "sys/statvfs.h",
3212                "sys/swap.h",
3213                "sys/syscall.h",
3214                "sys/time.h",
3215                "sys/timerfd.h",
3216                "sys/times.h",
3217                "sys/timex.h",
3218                "sys/types.h",
3219                "sys/uio.h",
3220                "sys/un.h",
3221                "sys/user.h",
3222                "sys/utsname.h",
3223                "sys/vfs.h",
3224                "sys/wait.h",
3225                "syslog.h",
3226                "termios.h",
3227                "time.h",
3228                "ucontext.h",
3229                "unistd.h",
3230                "utime.h",
3231                "utmp.h",
3232                "utmpx.h",
3233                "wchar.h",
3234                "errno.h",
3235                // `sys/io.h` is only available on x86*, Alpha, IA64, and 32-bit
3236                // ARM: https://bugzilla.redhat.com/show_bug.cgi?id=1116162
3237                // Also unavailable on gnueabihf with glibc 2.30.
3238                // https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=6b33f373c7b9199e00ba5fbafd94ac9bfb4337b1
3239                [(x86_64 || x86_32 || arm) && !gnueabihf]: "sys/io.h",
3240                // `sys/reg.h` is only available on x86 and x86_64
3241                [x86_64 || x86_32]: "sys/reg.h",
3242                // sysctl system call is deprecated and not available on musl
3243                // It is also unsupported in x32, deprecated since glibc 2.30:
3244                [!(x32 || musl || gnu)]: "sys/sysctl.h",
3245                // <execinfo.h> is not supported by musl:
3246                // https://www.openwall.com/lists/musl/2015/04/09/3
3247                // <execinfo.h> is not present on uclibc.
3248                [!(musl || uclibc)]: "execinfo.h",
3249     }
3250 
3251     // Include linux headers at the end:
3252     headers! {
3253         cfg:
3254         "asm/mman.h",
3255         "linux/can.h",
3256         "linux/can/raw.h",
3257         // FIXME: requires kernel headers >= 5.4.1.
3258         [!musl]: "linux/can/j1939.h",
3259         "linux/dccp.h",
3260         "linux/errqueue.h",
3261         "linux/falloc.h",
3262         "linux/filter.h",
3263         "linux/fs.h",
3264         "linux/futex.h",
3265         "linux/genetlink.h",
3266         "linux/if.h",
3267         "linux/if_addr.h",
3268         "linux/if_alg.h",
3269         "linux/if_ether.h",
3270         "linux/if_tun.h",
3271         "linux/input.h",
3272         "linux/ipv6.h",
3273         "linux/kexec.h",
3274         "linux/keyctl.h",
3275         "linux/magic.h",
3276         "linux/memfd.h",
3277         "linux/membarrier.h",
3278         "linux/mempolicy.h",
3279         "linux/mman.h",
3280         "linux/module.h",
3281         // FIXME: requires kernel headers >= 5.1.
3282         [!musl]: "linux/mount.h",
3283         "linux/net_tstamp.h",
3284         "linux/netfilter/nfnetlink.h",
3285         "linux/netfilter/nfnetlink_log.h",
3286         "linux/netfilter/nfnetlink_queue.h",
3287         "linux/netfilter/nf_tables.h",
3288         "linux/netfilter_ipv4.h",
3289         "linux/netfilter_ipv6.h",
3290         "linux/netfilter_ipv6/ip6_tables.h",
3291         "linux/netlink.h",
3292         // FIXME: requires Linux >= 5.6:
3293         [!musl]: "linux/openat2.h",
3294         [!musl]: "linux/ptrace.h",
3295         "linux/quota.h",
3296         "linux/random.h",
3297         "linux/reboot.h",
3298         "linux/rtnetlink.h",
3299         "linux/sched.h",
3300         "linux/sctp.h",
3301         "linux/seccomp.h",
3302         "linux/sock_diag.h",
3303         "linux/sockios.h",
3304         "linux/uinput.h",
3305         "linux/vm_sockets.h",
3306         "linux/wait.h",
3307         "sys/fanotify.h",
3308         // <sys/auxv.h> is not present on uclibc
3309         [!uclibc]: "sys/auxv.h",
3310     }
3311 
3312     // note: aio.h must be included before sys/mount.h
3313     headers! {
3314         cfg:
3315         "sys/xattr.h",
3316         "sys/sysinfo.h",
3317         // AIO is not supported by uclibc:
3318         [!uclibc]: "aio.h",
3319     }
3320 
3321     cfg.type_name(move |ty, is_struct, is_union| {
3322         match ty {
3323             // Just pass all these through, no need for a "struct" prefix
3324             "FILE" | "fd_set" | "Dl_info" | "DIR" | "Elf32_Phdr" | "Elf64_Phdr" | "Elf32_Shdr"
3325             | "Elf64_Shdr" | "Elf32_Sym" | "Elf64_Sym" | "Elf32_Ehdr" | "Elf64_Ehdr"
3326             | "Elf32_Chdr" | "Elf64_Chdr" => ty.to_string(),
3327 
3328             "Ioctl" if gnu => "unsigned long".to_string(),
3329             "Ioctl" => "int".to_string(),
3330 
3331             t if is_union => format!("union {}", t),
3332 
3333             t if t.ends_with("_t") => t.to_string(),
3334 
3335             // In MUSL `flock64` is a typedef to `flock`.
3336             "flock64" if musl => format!("struct {}", ty),
3337 
3338             // put `struct` in front of all structs:.
3339             t if is_struct => format!("struct {}", t),
3340 
3341             t => t.to_string(),
3342         }
3343     });
3344 
3345     cfg.field_name(move |struct_, field| {
3346         match field {
3347             // Our stat *_nsec fields normally don't actually exist but are part
3348             // of a timeval struct
3349             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
3350                 s.replace("e_nsec", ".tv_nsec")
3351             }
3352             // FIXME: epoll_event.data is actually a union in C, but in Rust
3353             // it is only a u64 because we only expose one field
3354             // http://man7.org/linux/man-pages/man2/epoll_wait.2.html
3355             "u64" if struct_ == "epoll_event" => "data.u64".to_string(),
3356             // The following structs have a field called `type` in C,
3357             // but `type` is a Rust keyword, so these fields are translated
3358             // to `type_` in Rust.
3359             "type_"
3360                 if struct_ == "input_event"
3361                     || struct_ == "input_mask"
3362                     || struct_ == "ff_effect" =>
3363             {
3364                 "type".to_string()
3365             }
3366 
3367             s => s.to_string(),
3368         }
3369     });
3370 
3371     cfg.skip_type(move |ty| {
3372         match ty {
3373             // FIXME: `sighandler_t` type is incorrect, see:
3374             // https://github.com/rust-lang/libc/issues/1359
3375             "sighandler_t" => true,
3376 
3377             // These cannot be tested when "resolv.h" is included and are tested
3378             // in the `linux_elf.rs` file.
3379             "Elf64_Phdr" | "Elf32_Phdr" => true,
3380 
3381             // This type is private on Linux. It is implemented as a C `enum`
3382             // (`c_uint`) and this clashes with the type of the `rlimit` APIs
3383             // which expect a `c_int` even though both are ABI compatible.
3384             "__rlimit_resource_t" => true,
3385             // on Linux, this is a volatile int
3386             "pthread_spinlock_t" => true,
3387 
3388             // For internal use only, to define architecture specific ioctl constants with a libc specific type.
3389             "Ioctl" => true,
3390 
3391             // FIXME: requires >= 5.4.1 kernel headers
3392             "pgn_t" if musl => true,
3393             "priority_t" if musl => true,
3394             "name_t" if musl => true,
3395 
3396             _ => false,
3397         }
3398     });
3399 
3400     cfg.skip_struct(move |ty| {
3401         if ty.starts_with("__c_anonymous_") {
3402             return true;
3403         }
3404         // FIXME: musl CI has old headers
3405         if musl && ty.starts_with("uinput_") {
3406             return true;
3407         }
3408         // FIXME: sparc64 CI has old headers
3409         if sparc64 && (ty == "uinput_ff_erase" || ty == "uinput_abs_setup") {
3410             return true;
3411         }
3412         // FIXME(https://github.com/rust-lang/libc/issues/1558): passing by
3413         // value corrupts the value for reasons not understood.
3414         if (gnu && sparc64) && (ty == "ip_mreqn" || ty == "hwtstamp_config") {
3415             return true;
3416         }
3417         match ty {
3418             // These cannot be tested when "resolv.h" is included and are tested
3419             // in the `linux_elf.rs` file.
3420             "Elf64_Phdr" | "Elf32_Phdr" => true,
3421 
3422             // On Linux, the type of `ut_tv` field of `struct utmpx`
3423             // can be an anonymous struct, so an extra struct,
3424             // which is absent in glibc, has to be defined.
3425             "__timeval" => true,
3426 
3427             // FIXME: This is actually a union, not a struct
3428             "sigval" => true,
3429 
3430             // This type is tested in the `linux_termios.rs` file since there
3431             // are header conflicts when including them with all the other
3432             // structs.
3433             "termios2" => true,
3434 
3435             // FIXME: remove once we set minimum supported glibc version.
3436             // ucontext_t added a new field as of glibc 2.28; our struct definition is
3437             // conservative and omits the field, but that means the size doesn't match for newer
3438             // glibcs (see https://github.com/rust-lang/libc/issues/1410)
3439             "ucontext_t" if gnu => true,
3440 
3441             // FIXME: Somehow we cannot include headers correctly in glibc 2.30.
3442             // So let's ignore for now and re-visit later.
3443             // Probably related: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91085
3444             "statx" => true,
3445             "statx_timestamp" => true,
3446 
3447             // On Linux, the type of `ut_exit` field of struct `utmpx`
3448             // can be an anonymous struct, so an extra struct,
3449             // which is absent in musl, has to be defined.
3450             "__exit_status" if musl => true,
3451 
3452             // clone_args might differ b/w libc versions
3453             "clone_args" => true,
3454 
3455             // Might differ between kernel versions
3456             "open_how" => true,
3457 
3458             // FIXME: requires >= 5.4.1 kernel headers
3459             "j1939_filter" if musl => true,
3460 
3461             // FIXME: requires >= 5.4 kernel headers
3462             "sockaddr_can" if musl => true,
3463 
3464             "sctp_initmsg" | "sctp_sndrcvinfo" | "sctp_sndinfo" | "sctp_rcvinfo"
3465             | "sctp_nxtinfo" | "sctp_prinfo" | "sctp_authinfo" => true,
3466 
3467             _ => false,
3468         }
3469     });
3470 
3471     cfg.skip_const(move |name| {
3472         if !gnu {
3473             // Skip definitions from the kernel on non-glibc Linux targets.
3474             // They're libc-independent, so we only need to check them on one
3475             // libc. We don't want to break CI if musl or another libc doesn't
3476             // have the definitions yet. (We do still want to check them on
3477             // every glibc target, though, as some of them can vary by
3478             // architecture.)
3479             //
3480             // This is not an exhaustive list of kernel constants, just a list
3481             // of prefixes of all those that have appeared here or that get
3482             // updated regularly and seem likely to cause breakage.
3483             if name.starts_with("AF_")
3484                 || name.starts_with("ARPHRD_")
3485                 || name.starts_with("EPOLL")
3486                 || name.starts_with("F_")
3487                 || name.starts_with("FALLOC_FL_")
3488                 || name.starts_with("IFLA_")
3489                 || name.starts_with("KEXEC_")
3490                 || name.starts_with("MS_")
3491                 || name.starts_with("MSG_")
3492                 || name.starts_with("OPEN_TREE_")
3493                 || name.starts_with("P_")
3494                 || name.starts_with("PF_")
3495                 || name.starts_with("RLIMIT_")
3496                 || name.starts_with("RTEXT_FILTER_")
3497                 || name.starts_with("SOL_")
3498                 || name.starts_with("STATX_")
3499                 || name.starts_with("SW_")
3500                 || name.starts_with("SYS_")
3501                 || name.starts_with("TCP_")
3502                 || name.starts_with("UINPUT_")
3503                 || name.starts_with("VMADDR_")
3504             {
3505                 return true;
3506             }
3507         }
3508         if musl {
3509             // FIXME: Requires >= 5.4.1 kernel headers
3510             if name.starts_with("J1939")
3511                 || name.starts_with("RTEXT_FILTER_")
3512                 || name.starts_with("SO_J1939")
3513                 || name.starts_with("SCM_J1939")
3514             {
3515                 return true;
3516             }
3517             // FIXME: Requires >= 5.10 kernel headers
3518             if name.starts_with("MEMBARRIER_CMD_REGISTER")
3519                 || name.starts_with("MEMBARRIER_CMD_PRIVATE")
3520             {
3521                 return true;
3522             }
3523         }
3524         match name {
3525             // These constants are not available if gnu headers have been included
3526             // and can therefore not be tested here
3527             //
3528             // The IPV6 constants are tested in the `linux_ipv6.rs` tests:
3529             | "IPV6_FLOWINFO"
3530             | "IPV6_FLOWLABEL_MGR"
3531             | "IPV6_FLOWINFO_SEND"
3532             | "IPV6_FLOWINFO_FLOWLABEL"
3533             | "IPV6_FLOWINFO_PRIORITY"
3534             // The F_ fnctl constants are tested in the `linux_fnctl.rs` tests:
3535             | "F_CANCELLK"
3536             | "F_ADD_SEALS"
3537             | "F_GET_SEALS"
3538             | "F_SEAL_SEAL"
3539             | "F_SEAL_SHRINK"
3540             | "F_SEAL_GROW"
3541             | "F_SEAL_WRITE" => true,
3542             // The `ARPHRD_CAN` is tested in the `linux_if_arp.rs` tests
3543             // because including `linux/if_arp.h` causes some conflicts:
3544             "ARPHRD_CAN" => true,
3545 
3546             // FIXME: deprecated: not available in any header
3547             // See: https://github.com/rust-lang/libc/issues/1356
3548             "ENOATTR" => true,
3549 
3550             // FIXME: SIGUNUSED was removed in glibc 2.26
3551             // Users should use SIGSYS instead.
3552             "SIGUNUSED" => true,
3553 
3554             // FIXME: conflicts with glibc headers and is tested in
3555             // `linux_termios.rs` below:
3556             | "BOTHER"
3557             | "IBSHIFT"
3558             | "TCGETS2"
3559             | "TCSETS2"
3560             | "TCSETSW2"
3561             | "TCSETSF2" => true,
3562 
3563             // FIXME: on musl the pthread types are defined a little differently
3564             // - these constants are used by the glibc implementation.
3565             n if musl && n.contains("__SIZEOF_PTHREAD") => true,
3566 
3567             // FIXME: It was extended to 4096 since glibc 2.31 (Linux 5.4).
3568             // We should do so after a while.
3569             "SOMAXCONN" if gnu => true,
3570 
3571             // deprecated: not available from Linux kernel 5.6:
3572             "VMADDR_CID_RESERVED" => true,
3573 
3574             // IPPROTO_MAX was increased in 5.6 for IPPROTO_MPTCP:
3575             | "IPPROTO_MAX"
3576             | "IPPROTO_MPTCP" => true,
3577 
3578             // FIXME: Not currently available in headers
3579             "P_PIDFD" if mips => true,
3580             "SYS_pidfd_open" if mips => true,
3581 
3582             // FIXME: Not currently available in headers on MIPS
3583             // Not yet implemented on sparc64
3584             "SYS_clone3" if mips | sparc64 => true,
3585 
3586             // FIXME: Not defined on ARM, gnueabihf, MIPS, musl, PowerPC, riscv64, s390x, and sparc64.
3587             "SYS_memfd_secret" if arm | gnueabihf | mips | musl | ppc | riscv64 | s390x | sparc64 => true,
3588 
3589             // FIXME: Added in Linux 5.16
3590             // https://github.com/torvalds/linux/commit/039c0ec9bb77446d7ada7f55f90af9299b28ca49
3591             "SYS_futex_waitv" => true,
3592 
3593             // FIXME: Added in Linux 5.17
3594             // https://github.com/torvalds/linux/commit/c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0
3595             "SYS_set_mempolicy_home_node" => true,
3596 
3597             // FIXME: Added in Linux 5.18
3598             // https://github.com/torvalds/linux/commit/8b5413647262dda8d8d0e07e14ea1de9ac7cf0b2
3599             "NFQA_PRIORITY" => true,
3600 
3601             // FIXME: requires more recent kernel headers on CI
3602             | "UINPUT_VERSION"
3603             | "SW_MAX"
3604             | "SW_CNT"
3605                 if mips || ppc64 || riscv64 => true,
3606 
3607             // FIXME: Not currently available in headers on ARM, MIPS and musl.
3608             "NETLINK_GET_STRICT_CHK" if arm || mips || musl => true,
3609 
3610             // kernel constants not available in uclibc 1.0.34
3611             | "EXTPROC"
3612             | "FAN_MARK_FILESYSTEM"
3613             | "FAN_MARK_INODE"
3614             | "IPPROTO_BEETPH"
3615             | "IPPROTO_MPLS"
3616             | "IPV6_HDRINCL"
3617             | "IPV6_MULTICAST_ALL"
3618             | "IPV6_PMTUDISC_INTERFACE"
3619             | "IPV6_PMTUDISC_OMIT"
3620             | "IPV6_ROUTER_ALERT_ISOLATE"
3621             | "PACKET_MR_UNICAST"
3622             | "RUSAGE_THREAD"
3623             | "SHM_EXEC"
3624             | "UDP_GRO"
3625             | "UDP_SEGMENT"
3626                 if uclibc => true,
3627 
3628             // headers conflicts with linux/pidfd.h
3629             "PIDFD_NONBLOCK" => true,
3630 
3631             // is a private value for kernel usage normally
3632             "FUSE_SUPER_MAGIC" => true,
3633 
3634             // linux 5.17 min
3635             "PR_SET_VMA" | "PR_SET_VMA_ANON_NAME" => true,
3636 
3637             // present in recent kernels only
3638             "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,
3639 
3640             // present in recent kernels only >= 5.13
3641             "PR_PAC_SET_ENABLED_KEYS" | "PR_PAC_GET_ENABLED_KEYS" => true,
3642             // present in recent kernels only >= 5.19
3643             "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,
3644 
3645             // Added in Linux 5.14
3646             "FUTEX_LOCK_PI2" => true,
3647 
3648             // Added in  linux 6.1
3649             "STATX_DIOALIGN" => true,
3650 
3651             // FIXME: Parts of netfilter/nfnetlink*.h require more recent kernel headers:
3652             | "RTNLGRP_MCTP_IFADDR" // linux v5.17+
3653             | "RTNLGRP_TUNNEL" // linux v5.18+
3654             | "RTNLGRP_STATS" // linux v5.18+
3655                 => true,
3656 
3657             // FIXME: The below is no longer const in glibc 2.34:
3658             // https://github.com/bminor/glibc/commit/5d98a7dae955bafa6740c26eaba9c86060ae0344
3659             | "PTHREAD_STACK_MIN"
3660             | "SIGSTKSZ"
3661             | "MINSIGSTKSZ"
3662                 if gnu => true,
3663 
3664             // FIXME: Linux >= 5.16 changed its value:
3665             // https://github.com/torvalds/linux/commit/42df6e1d221dddc0f2acf2be37e68d553ad65f96
3666             "NF_NETDEV_NUMHOOKS" => true,
3667 
3668             // FIXME: requires Linux >= 5.6:
3669             | "RESOLVE_BENEATH"
3670             | "RESOLVE_CACHED"
3671             | "RESOLVE_IN_ROOT"
3672             | "RESOLVE_NO_MAGICLINKS"
3673             | "RESOLVE_NO_SYMLINKS"
3674             | "RESOLVE_NO_XDEV" if musl => true,
3675 
3676             // FIXME: requires Linux >= 5.4:
3677             | "CAN_J1939"
3678             | "CAN_NPROTO" if musl => true,
3679 
3680             // FIXME: requires Linux >= 5.6
3681             "GRND_INSECURE" if musl => true,
3682 
3683             // FIXME: requires Linux >= 5.7:
3684             "MREMAP_DONTUNMAP" if musl => true,
3685 
3686             // FIXME: Requires more recent kernel headers (5.9 / 5.11):
3687             | "CLOSE_RANGE_UNSHARE"
3688             | "CLOSE_RANGE_CLOEXEC" if musl => true,
3689 
3690             // FIXME: requires Linux >= 5.12:
3691             "MPOL_F_NUMA_BALANCING" if musl => true,
3692 
3693             // FIXME: Requires more recent kernel headers
3694             | "NFNL_SUBSYS_COUNT" // bumped in v5.14
3695             | "NFNL_SUBSYS_HOOK" // v5.14+
3696             | "NFULA_VLAN" // v5.4+
3697             | "NFULA_L2HDR" // v5.4+
3698             | "NFULA_VLAN_PROTO" // v5.4+
3699             | "NFULA_VLAN_TCI" // v5.4+
3700             | "NFULA_VLAN_UNSPEC" // v5.4+
3701             | "RTNLGRP_NEXTHOP" // linux v5.3+
3702             | "RTNLGRP_BRVLAN" // linux v5.6+
3703             if musl => true,
3704 
3705             | "MADV_COLD"
3706             | "MADV_PAGEOUT"
3707             | "MADV_POPULATE_READ"
3708             | "MADV_POPULATE_WRITE"
3709             if musl => true,
3710 
3711             // FIXME: Requires more recent kernel headers
3712             | "IFLA_PARENT_DEV_NAME"     // linux v5.13+
3713             | "IFLA_PARENT_DEV_BUS_NAME" // linux v5.13+
3714             | "IFLA_GRO_MAX_SIZE"        // linux v5.16+
3715             | "IFLA_TSO_MAX_SIZE"        // linux v5.18+
3716             | "IFLA_TSO_MAX_SEGS"        // linux v5.18+
3717             | "IFLA_ALLMULTI"            // linux v6.0+
3718             | "MADV_DONTNEED_LOCKED"     // linux v5.18+
3719                 => true,
3720             "SCTP_FUTURE_ASSOC" | "SCTP_CURRENT_ASSOC" | "SCTP_ALL_ASSOC" | "SCTP_PEER_ADDR_THLDS_V2" => true, // linux 5.5+
3721 
3722             // FIXME: Requires more recent kernel headers
3723             "HWTSTAMP_TX_ONESTEP_P2P" if musl => true, // linux v5.6+
3724 
3725             _ => false,
3726         }
3727     });
3728 
3729     cfg.skip_fn(move |name| {
3730         // skip those that are manually verified
3731         match name {
3732             // FIXME: https://github.com/rust-lang/libc/issues/1272
3733             "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
3734 
3735             // There are two versions of the sterror_r function, see
3736             //
3737             // https://linux.die.net/man/3/strerror_r
3738             //
3739             // An XSI-compliant version provided if:
3740             //
3741             // (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600)
3742             //  && ! _GNU_SOURCE
3743             //
3744             // and a GNU specific version provided if _GNU_SOURCE is defined.
3745             //
3746             // libc provides bindings for the XSI-compliant version, which is
3747             // preferred for portable applications.
3748             //
3749             // We skip the test here since here _GNU_SOURCE is defined, and
3750             // test the XSI version below.
3751             "strerror_r" => true,
3752 
3753             // FIXME: Our API is unsound. The Rust API allows aliasing
3754             // pointers, but the C API requires pointers not to alias.
3755             // We should probably be at least using `&`/`&mut` here, see:
3756             // https://github.com/gnzlbg/ctest/issues/68
3757             "lio_listio" if musl => true,
3758 
3759             // Needs glibc 2.34 or later.
3760             "posix_spawn_file_actions_addclosefrom_np" if gnu && sparc64 => true,
3761             // Needs glibc 2.35 or later.
3762             "posix_spawn_file_actions_addtcsetpgrp_np" if gnu && sparc64 => true,
3763 
3764             // FIXME: Deprecated since glibc 2.30. Remove fn once upstream does.
3765             "sysctl" if gnu => true,
3766 
3767             // FIXME: It now takes c_void instead of timezone since glibc 2.31.
3768             "gettimeofday" if gnu => true,
3769 
3770             // These are all implemented as static inline functions in uclibc, so
3771             // they cannot be linked against.
3772             // If implementations are required, they might need to be implemented
3773             // in this crate.
3774             "posix_spawnattr_init" if uclibc => true,
3775             "posix_spawnattr_destroy" if uclibc => true,
3776             "posix_spawnattr_getsigdefault" if uclibc => true,
3777             "posix_spawnattr_setsigdefault" if uclibc => true,
3778             "posix_spawnattr_getsigmask" if uclibc => true,
3779             "posix_spawnattr_setsigmask" if uclibc => true,
3780             "posix_spawnattr_getflags" if uclibc => true,
3781             "posix_spawnattr_setflags" if uclibc => true,
3782             "posix_spawnattr_getpgroup" if uclibc => true,
3783             "posix_spawnattr_setpgroup" if uclibc => true,
3784             "posix_spawnattr_getschedpolicy" if uclibc => true,
3785             "posix_spawnattr_setschedpolicy" if uclibc => true,
3786             "posix_spawnattr_getschedparam" if uclibc => true,
3787             "posix_spawnattr_setschedparam" if uclibc => true,
3788             "posix_spawn_file_actions_init" if uclibc => true,
3789             "posix_spawn_file_actions_destroy" if uclibc => true,
3790 
3791             // uclibc defines the flags type as a uint, but dependent crates
3792             // assume it's a int instead.
3793             "getnameinfo" if uclibc => true,
3794 
3795             // FIXME: This needs musl 1.2.2 or later.
3796             "gettid" if musl => true,
3797 
3798             // Needs glibc 2.33 or later.
3799             "mallinfo2" => true,
3800 
3801             "reallocarray" if musl => true,
3802 
3803             // Not defined in uclibc as of 1.0.34
3804             "gettid" if uclibc => true,
3805 
3806             // Needs musl 1.2.3 or later.
3807             "pthread_getname_np" if musl => true,
3808 
3809             // pthread_sigqueue uses sigval, which was initially declared
3810             // as a struct but should be defined as a union. However due
3811             // to the issues described here: https://github.com/rust-lang/libc/issues/2816
3812             // it can't be changed from struct.
3813             "pthread_sigqueue" => true,
3814 
3815             // There are two versions of basename(3) on Linux with glibc, see
3816             //
3817             // https://man7.org/linux/man-pages/man3/basename.3.html
3818             //
3819             // If libgen.h is included, then the POSIX version will be available;
3820             // If _GNU_SOURCE is defined and string.h is included, then the GNU one
3821             // will be used.
3822             //
3823             // libc exposes both of them, providing a prefix to differentiate between
3824             // them.
3825             //
3826             // Because the name with prefix is not a valid symbol in C, we have to
3827             // skip the tests.
3828             "posix_basename" if gnu => true,
3829             "gnu_basename" if gnu => true,
3830 
3831             _ => false,
3832         }
3833     });
3834 
3835     cfg.skip_field_type(move |struct_, field| {
3836         // This is a weird union, don't check the type.
3837         (struct_ == "ifaddrs" && field == "ifa_ifu") ||
3838         // sighandler_t type is super weird
3839         (struct_ == "sigaction" && field == "sa_sigaction") ||
3840         // __timeval type is a patch which doesn't exist in glibc
3841         (struct_ == "utmpx" && field == "ut_tv") ||
3842         // sigval is actually a union, but we pretend it's a struct
3843         (struct_ == "sigevent" && field == "sigev_value") ||
3844         // this one is an anonymous union
3845         (struct_ == "ff_effect" && field == "u") ||
3846         // `__exit_status` type is a patch which is absent in musl
3847         (struct_ == "utmpx" && field == "ut_exit" && musl) ||
3848         // `can_addr` is an anonymous union
3849         (struct_ == "sockaddr_can" && field == "can_addr")
3850     });
3851 
3852     cfg.volatile_item(|i| {
3853         use ctest::VolatileItemKind::*;
3854         match i {
3855             // aio_buf is a volatile void** but since we cannot express that in
3856             // Rust types, we have to explicitly tell the checker about it here:
3857             StructField(ref n, ref f) if n == "aiocb" && f == "aio_buf" => true,
3858             _ => false,
3859         }
3860     });
3861 
3862     cfg.skip_field(move |struct_, field| {
3863         // this is actually a union on linux, so we can't represent it well and
3864         // just insert some padding.
3865         (struct_ == "siginfo_t" && field == "_pad") ||
3866         // musl names this __dummy1 but it's still there
3867         (musl && struct_ == "glob_t" && field == "gl_flags") ||
3868         // musl seems to define this as an *anonymous* bitfield
3869         (musl && struct_ == "statvfs" && field == "__f_unused") ||
3870         // sigev_notify_thread_id is actually part of a sigev_un union
3871         (struct_ == "sigevent" && field == "sigev_notify_thread_id") ||
3872         // signalfd had SIGSYS fields added in Linux 4.18, but no libc release
3873         // has them yet.
3874         (struct_ == "signalfd_siginfo" && (field == "ssi_addr_lsb" ||
3875                                            field == "_pad2" ||
3876                                            field == "ssi_syscall" ||
3877                                            field == "ssi_call_addr" ||
3878                                            field == "ssi_arch")) ||
3879         // FIXME: After musl 1.1.24, it have only one field `sched_priority`,
3880         // while other fields become reserved.
3881         (struct_ == "sched_param" && [
3882             "sched_ss_low_priority",
3883             "sched_ss_repl_period",
3884             "sched_ss_init_budget",
3885             "sched_ss_max_repl",
3886         ].contains(&field) && musl) ||
3887         // FIXME: After musl 1.1.24, the type becomes `int` instead of `unsigned short`.
3888         (struct_ == "ipc_perm" && field == "__seq" && aarch64_musl) ||
3889         // glibc uses unnamed fields here and Rust doesn't support that yet
3890         (struct_ == "timex" && field.starts_with("__unused")) ||
3891         // FIXME: It now takes mode_t since glibc 2.31 on some targets.
3892         (struct_ == "ipc_perm" && field == "mode"
3893             && ((x86_64 || i686 || arm || riscv64) && gnu || x86_64_gnux32)
3894         ) ||
3895         // the `u` field is in fact an anonymous union
3896         (gnu && struct_ == "ptrace_syscall_info" && (field == "u" || field == "pad")) ||
3897         // the vregs field is a `__uint128_t` C's type.
3898         (struct_ == "user_fpsimd_struct" && field == "vregs") ||
3899         // Linux >= 5.11 tweaked the `svm_zero` field of the `sockaddr_vm` struct.
3900         // https://github.com/torvalds/linux/commit/dc8eeef73b63ed8988224ba6b5ed19a615163a7f
3901         (struct_ == "sockaddr_vm" && field == "svm_zero") ||
3902         // the `ifr_ifru` field is an anonymous union
3903         (struct_ == "ifreq" && field == "ifr_ifru") ||
3904         // glibc uses a single array `uregs` instead of individual fields.
3905         (struct_ == "user_regs" && arm)
3906     });
3907 
3908     cfg.skip_roundtrip(move |s| match s {
3909         // FIXME:
3910         "utsname" if mips32 || mips64 => true,
3911         // FIXME:
3912         "mcontext_t" if s390x => true,
3913         // FIXME: This is actually a union.
3914         "fpreg_t" if s390x => true,
3915 
3916         "sockaddr_un" | "sembuf" | "ff_constant_effect" if mips32 && (gnu || musl) => true,
3917 
3918         // The test doesn't work on some env:
3919         "ipv6_mreq"
3920         | "ip_mreq_source"
3921         | "sockaddr_in6"
3922         | "sockaddr_ll"
3923         | "in_pktinfo"
3924         | "arpreq"
3925         | "arpreq_old"
3926         | "sockaddr_un"
3927         | "ff_constant_effect"
3928         | "ff_ramp_effect"
3929         | "ff_condition_effect"
3930         | "Elf32_Ehdr"
3931         | "Elf32_Chdr"
3932         | "ucred"
3933         | "in6_pktinfo"
3934         | "sockaddr_nl"
3935         | "termios"
3936         | "nlmsgerr"
3937             if (mips64 || sparc64) && gnu =>
3938         {
3939             true
3940         }
3941 
3942         // FIXME: the call ABI of max_align_t is incorrect on these platforms:
3943         "max_align_t" if i686 || mips64 || ppc64 => true,
3944 
3945         _ => false,
3946     });
3947 
3948     cfg.generate("../src/lib.rs", "main.rs");
3949 
3950     test_linux_like_apis(target);
3951 }
3952 
3953 // This function tests APIs that are incompatible to test when other APIs
3954 // are included (e.g. because including both sets of headers clashes)
3955 fn test_linux_like_apis(target: &str) {
3956     let gnu = target.contains("gnu");
3957     let musl = target.contains("musl") || target.contains("ohos");
3958     let linux = target.contains("linux");
3959     let emscripten = target.contains("emscripten");
3960     let android = target.contains("android");
3961     assert!(linux || android || emscripten);
3962 
3963     if linux || android || emscripten {
3964         // test strerror_r from the `string.h` header
3965         let mut cfg = ctest_cfg();
3966         cfg.skip_type(|_| true).skip_static(|_| true);
3967 
3968         headers! { cfg: "string.h" }
3969         cfg.skip_fn(|f| match f {
3970             "strerror_r" => false,
3971             _ => true,
3972         })
3973         .skip_const(|_| true)
3974         .skip_struct(|_| true);
3975         cfg.generate("../src/lib.rs", "linux_strerror_r.rs");
3976     }
3977 
3978     if linux || android || emscripten {
3979         // test fcntl - see:
3980         // http://man7.org/linux/man-pages/man2/fcntl.2.html
3981         let mut cfg = ctest_cfg();
3982 
3983         if musl {
3984             cfg.header("fcntl.h");
3985         } else {
3986             cfg.header("linux/fcntl.h");
3987         }
3988 
3989         cfg.skip_type(|_| true)
3990             .skip_static(|_| true)
3991             .skip_struct(|_| true)
3992             .skip_fn(|_| true)
3993             .skip_const(move |name| match name {
3994                 // test fcntl constants:
3995                 "F_CANCELLK" | "F_ADD_SEALS" | "F_GET_SEALS" | "F_SEAL_SEAL" | "F_SEAL_SHRINK"
3996                 | "F_SEAL_GROW" | "F_SEAL_WRITE" => false,
3997                 _ => true,
3998             })
3999             .type_name(move |ty, is_struct, is_union| match ty {
4000                 t if is_struct => format!("struct {}", t),
4001                 t if is_union => format!("union {}", t),
4002                 t => t.to_string(),
4003             });
4004 
4005         cfg.generate("../src/lib.rs", "linux_fcntl.rs");
4006     }
4007 
4008     if linux || android {
4009         // test termios
4010         let mut cfg = ctest_cfg();
4011         cfg.header("asm/termbits.h");
4012         cfg.header("linux/termios.h");
4013         cfg.skip_type(|_| true)
4014             .skip_static(|_| true)
4015             .skip_fn(|_| true)
4016             .skip_const(|c| match c {
4017                 "BOTHER" | "IBSHIFT" => false,
4018                 "TCGETS2" | "TCSETS2" | "TCSETSW2" | "TCSETSF2" => false,
4019                 _ => true,
4020             })
4021             .skip_struct(|s| s != "termios2")
4022             .type_name(move |ty, is_struct, is_union| match ty {
4023                 "Ioctl" if gnu => "unsigned long".to_string(),
4024                 "Ioctl" => "int".to_string(),
4025                 t if is_struct => format!("struct {}", t),
4026                 t if is_union => format!("union {}", t),
4027                 t => t.to_string(),
4028             });
4029         cfg.generate("../src/lib.rs", "linux_termios.rs");
4030     }
4031 
4032     if linux || android {
4033         // test IPV6_ constants:
4034         let mut cfg = ctest_cfg();
4035         headers! {
4036             cfg:
4037             "linux/in6.h"
4038         }
4039         cfg.skip_type(|_| true)
4040             .skip_static(|_| true)
4041             .skip_fn(|_| true)
4042             .skip_const(|_| true)
4043             .skip_struct(|_| true)
4044             .skip_const(move |name| match name {
4045                 "IPV6_FLOWINFO"
4046                 | "IPV6_FLOWLABEL_MGR"
4047                 | "IPV6_FLOWINFO_SEND"
4048                 | "IPV6_FLOWINFO_FLOWLABEL"
4049                 | "IPV6_FLOWINFO_PRIORITY" => false,
4050                 _ => true,
4051             })
4052             .type_name(move |ty, is_struct, is_union| match ty {
4053                 t if is_struct => format!("struct {}", t),
4054                 t if is_union => format!("union {}", t),
4055                 t => t.to_string(),
4056             });
4057         cfg.generate("../src/lib.rs", "linux_ipv6.rs");
4058     }
4059 
4060     if linux || android {
4061         // Test Elf64_Phdr and Elf32_Phdr
4062         // These types have a field called `p_type`, but including
4063         // "resolve.h" defines a `p_type` macro that expands to `__p_type`
4064         // making the tests for these fails when both are included.
4065         let mut cfg = ctest_cfg();
4066         cfg.header("elf.h");
4067         cfg.skip_fn(|_| true)
4068             .skip_static(|_| true)
4069             .skip_const(|_| true)
4070             .type_name(move |ty, _is_struct, _is_union| ty.to_string())
4071             .skip_struct(move |ty| match ty {
4072                 "Elf64_Phdr" | "Elf32_Phdr" => false,
4073                 _ => true,
4074             })
4075             .skip_type(move |ty| match ty {
4076                 "Elf64_Phdr" | "Elf32_Phdr" => false,
4077                 _ => true,
4078             });
4079         cfg.generate("../src/lib.rs", "linux_elf.rs");
4080     }
4081 
4082     if linux || android {
4083         // Test `ARPHRD_CAN`.
4084         let mut cfg = ctest_cfg();
4085         cfg.header("linux/if_arp.h");
4086         cfg.skip_fn(|_| true)
4087             .skip_static(|_| true)
4088             .skip_const(move |name| match name {
4089                 "ARPHRD_CAN" => false,
4090                 _ => true,
4091             })
4092             .skip_struct(|_| true)
4093             .skip_type(|_| true);
4094         cfg.generate("../src/lib.rs", "linux_if_arp.rs");
4095     }
4096 }
4097 
4098 fn which_freebsd() -> Option<i32> {
4099     let output = std::process::Command::new("freebsd-version")
4100         .output()
4101         .ok()?;
4102     if !output.status.success() {
4103         return None;
4104     }
4105 
4106     let stdout = String::from_utf8(output.stdout).ok()?;
4107 
4108     match &stdout {
4109         s if s.starts_with("10") => Some(10),
4110         s if s.starts_with("11") => Some(11),
4111         s if s.starts_with("12") => Some(12),
4112         s if s.starts_with("13") => Some(13),
4113         s if s.starts_with("14") => Some(14),
4114         _ => None,
4115     }
4116 }
4117 
4118 fn test_haiku(target: &str) {
4119     assert!(target.contains("haiku"));
4120 
4121     let mut cfg = ctest_cfg();
4122     cfg.flag("-Wno-deprecated-declarations");
4123     cfg.define("__USE_GNU", Some("1"));
4124     cfg.define("_GNU_SOURCE", None);
4125     cfg.language(ctest::Lang::CXX);
4126 
4127     // POSIX API
4128     headers! { cfg:
4129                "alloca.h",
4130                "arpa/inet.h",
4131                "arpa/nameser.h",
4132                "arpa/nameser_compat.h",
4133                "assert.h",
4134                "complex.h",
4135                "ctype.h",
4136                "dirent.h",
4137                "div_t.h",
4138                "dlfcn.h",
4139                "endian.h",
4140                "errno.h",
4141                "fcntl.h",
4142                "fenv.h",
4143                "fnmatch.h",
4144                "fts.h",
4145                "ftw.h",
4146                "getopt.h",
4147                "glob.h",
4148                "grp.h",
4149                "inttypes.h",
4150                "iovec.h",
4151                "langinfo.h",
4152                "libgen.h",
4153                "libio.h",
4154                "limits.h",
4155                "locale.h",
4156                "malloc.h",
4157                "malloc_debug.h",
4158                "math.h",
4159                "memory.h",
4160                "monetary.h",
4161                "net/if.h",
4162                "net/if_dl.h",
4163                "net/if_media.h",
4164                "net/if_tun.h",
4165                "net/if_types.h",
4166                "net/route.h",
4167                "netdb.h",
4168                "netinet/in.h",
4169                "netinet/ip.h",
4170                "netinet/ip6.h",
4171                "netinet/ip_icmp.h",
4172                "netinet/ip_var.h",
4173                "netinet/tcp.h",
4174                "netinet/udp.h",
4175                "netinet6/in6.h",
4176                "nl_types.h",
4177                "null.h",
4178                "poll.h",
4179                "pthread.h",
4180                "pwd.h",
4181                "regex.h",
4182                "resolv.h",
4183                "sched.h",
4184                "search.h",
4185                "semaphore.h",
4186                "setjmp.h",
4187                "shadow.h",
4188                "signal.h",
4189                "size_t.h",
4190                "spawn.h",
4191                "stdint.h",
4192                "stdio.h",
4193                "stdlib.h",
4194                "string.h",
4195                "strings.h",
4196                "sys/cdefs.h",
4197                "sys/file.h",
4198                "sys/ioctl.h",
4199                "sys/ipc.h",
4200                "sys/mman.h",
4201                "sys/msg.h",
4202                "sys/param.h",
4203                "sys/poll.h",
4204                "sys/resource.h",
4205                "sys/select.h",
4206                "sys/sem.h",
4207                "sys/socket.h",
4208                "sys/sockio.h",
4209                "sys/stat.h",
4210                "sys/statvfs.h",
4211                "sys/time.h",
4212                "sys/timeb.h",
4213                "sys/times.h",
4214                "sys/types.h",
4215                "sys/uio.h",
4216                "sys/un.h",
4217                "sys/utsname.h",
4218                "sys/wait.h",
4219                "syslog.h",
4220                "tar.h",
4221                "termios.h",
4222                "time.h",
4223                "uchar.h",
4224                "unistd.h",
4225                "utime.h",
4226                "utmpx.h",
4227                "wchar.h",
4228                "wchar_t.h",
4229                "wctype.h"
4230     }
4231 
4232     // BSD Extensions
4233     headers! { cfg:
4234                "ifaddrs.h",
4235                "libutil.h",
4236                "link.h",
4237                "pty.h",
4238                "stringlist.h",
4239                "sys/link_elf.h",
4240     }
4241 
4242     // Native API
4243     headers! { cfg:
4244                "kernel/OS.h",
4245                "kernel/fs_attr.h",
4246                "kernel/fs_index.h",
4247                "kernel/fs_info.h",
4248                "kernel/fs_query.h",
4249                "kernel/fs_volume.h",
4250                "kernel/image.h",
4251                "kernel/scheduler.h",
4252                "storage/FindDirectory.h",
4253                "storage/StorageDefs.h",
4254                "support/Errors.h",
4255                "support/SupportDefs.h",
4256                "support/TypeConstants.h"
4257     }
4258 
4259     cfg.skip_struct(move |ty| {
4260         if ty.starts_with("__c_anonymous_") {
4261             return true;
4262         }
4263         match ty {
4264             // FIXME: actually a union
4265             "sigval" => true,
4266             // FIXME: locale_t does not exist on Haiku
4267             "locale_t" => true,
4268             // FIXME: rusage has a different layout on Haiku
4269             "rusage" => true,
4270             // FIXME?: complains that rust aligns on 4 byte boundary, but
4271             //         Haiku does not align it at all.
4272             "in6_addr" => true,
4273             // The d_name attribute is an array of 1 on Haiku, with the
4274             // intention that the developer allocates a larger or smaller
4275             // piece of memory depending on the expected/actual size of the name.
4276             // Other platforms have sensible defaults. In Rust, the d_name field
4277             // is sized as the _POSIX_MAX_PATH, so that path names will fit in
4278             // newly allocated dirent objects. This breaks the automated tests.
4279             "dirent" => true,
4280             // The following structs contain function pointers, which cannot be initialized
4281             // with mem::zeroed(), so skip the automated test
4282             "image_info" | "thread_info" => true,
4283 
4284             "Elf64_Phdr" => true,
4285 
4286             // is an union
4287             "cpuid_info" => true,
4288 
4289             _ => false,
4290         }
4291     });
4292 
4293     cfg.skip_type(move |ty| {
4294         match ty {
4295             // FIXME: locale_t does not exist on Haiku
4296             "locale_t" => true,
4297             // These cause errors, to be reviewed in the future
4298             "sighandler_t" => true,
4299             "pthread_t" => true,
4300             "pthread_condattr_t" => true,
4301             "pthread_mutexattr_t" => true,
4302             "pthread_rwlockattr_t" => true,
4303             _ => false,
4304         }
4305     });
4306 
4307     cfg.skip_fn(move |name| {
4308         // skip those that are manually verified
4309         match name {
4310             // FIXME: https://github.com/rust-lang/libc/issues/1272
4311             "execv" | "execve" | "execvp" | "execvpe" => true,
4312             // FIXME: does not exist on haiku
4313             "open_wmemstream" => true,
4314             "mlockall" | "munlockall" => true,
4315             "tcgetsid" => true,
4316             "cfsetspeed" => true,
4317             // ignore for now, will be part of Haiku R1 beta 3
4318             "mlock" | "munlock" => true,
4319             // returns const char * on Haiku
4320             "strsignal" => true,
4321             // uses an enum as a parameter argument, which is incorrectly
4322             // translated into a struct argument
4323             "find_path" => true,
4324 
4325             "get_cpuid" => true,
4326 
4327             // uses varargs parameter
4328             "ioctl" => true,
4329 
4330             _ => false,
4331         }
4332     });
4333 
4334     cfg.skip_const(move |name| {
4335         match name {
4336             // FIXME: these constants do not exist on Haiku
4337             "DT_UNKNOWN" | "DT_FIFO" | "DT_CHR" | "DT_DIR" | "DT_BLK" | "DT_REG" | "DT_LNK"
4338             | "DT_SOCK" => true,
4339             "USRQUOTA" | "GRPQUOTA" => true,
4340             "SIGIOT" => true,
4341             "ARPOP_REQUEST" | "ARPOP_REPLY" | "ATF_COM" | "ATF_PERM" | "ATF_PUBL"
4342             | "ATF_USETRAILERS" => true,
4343             // Haiku does not have MAP_FILE, but rustc requires it
4344             "MAP_FILE" => true,
4345             // The following does not exist on Haiku but is required by
4346             // several crates
4347             "FIOCLEX" => true,
4348             // just skip this one, it is not defined on Haiku beta 2 but
4349             // since it is meant as a mask and not a parameter it can exist
4350             // here
4351             "LOG_PRIMASK" => true,
4352             // not defined on Haiku, but [get|set]priority is, so they are
4353             // useful
4354             "PRIO_MIN" | "PRIO_MAX" => true,
4355             //
4356             _ => false,
4357         }
4358     });
4359 
4360     cfg.skip_field(move |struct_, field| {
4361         match (struct_, field) {
4362             // FIXME: the stat struct actually has timespec members, whereas
4363             //        the current representation has these unpacked.
4364             ("stat", "st_atime") => true,
4365             ("stat", "st_atime_nsec") => true,
4366             ("stat", "st_mtime") => true,
4367             ("stat", "st_mtime_nsec") => true,
4368             ("stat", "st_ctime") => true,
4369             ("stat", "st_ctime_nsec") => true,
4370             ("stat", "st_crtime") => true,
4371             ("stat", "st_crtime_nsec") => true,
4372 
4373             // these are actually unions, but we cannot represent it well
4374             ("siginfo_t", "sigval") => true,
4375             ("sem_t", "named_sem_id") => true,
4376             ("sigaction", "sa_sigaction") => true,
4377             ("sigevent", "sigev_value") => true,
4378             ("fpu_state", "_fpreg") => true,
4379             // these fields have a simplified data definition in libc
4380             ("fpu_state", "_xmm") => true,
4381             ("savefpu", "_fp_ymm") => true,
4382 
4383             // skip these enum-type fields
4384             ("thread_info", "state") => true,
4385             ("image_info", "image_type") => true,
4386             _ => false,
4387         }
4388     });
4389 
4390     cfg.skip_roundtrip(move |s| match s {
4391         // FIXME: for some reason the roundtrip check fails for cpu_info
4392         "cpu_info" => true,
4393         _ => false,
4394     });
4395 
4396     cfg.type_name(move |ty, is_struct, is_union| {
4397         match ty {
4398             // Just pass all these through, no need for a "struct" prefix
4399             "area_info" | "port_info" | "port_message_info" | "team_info" | "sem_info"
4400             | "team_usage_info" | "thread_info" | "cpu_info" | "system_info"
4401             | "object_wait_info" | "image_info" | "attr_info" | "index_info" | "fs_info"
4402             | "FILE" | "DIR" | "Dl_info" => ty.to_string(),
4403 
4404             // enums don't need a prefix
4405             "directory_which" | "path_base_directory" => ty.to_string(),
4406 
4407             // is actually a union
4408             "sigval" => format!("union sigval"),
4409             t if is_union => format!("union {}", t),
4410             t if t.ends_with("_t") => t.to_string(),
4411             t if is_struct => format!("struct {}", t),
4412             t => t.to_string(),
4413         }
4414     });
4415 
4416     cfg.field_name(move |struct_, field| {
4417         match field {
4418             // Field is named `type` in C but that is a Rust keyword,
4419             // so these fields are translated to `type_` in the bindings.
4420             "type_" if struct_ == "object_wait_info" => "type".to_string(),
4421             "type_" if struct_ == "sem_t" => "type".to_string(),
4422             "type_" if struct_ == "attr_info" => "type".to_string(),
4423             "type_" if struct_ == "index_info" => "type".to_string(),
4424             "image_type" if struct_ == "image_info" => "type".to_string(),
4425             s => s.to_string(),
4426         }
4427     });
4428     cfg.generate("../src/lib.rs", "main.rs");
4429 }
4430