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Polish recent changes and make improvements

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- Simulate SIGPIPE on Windows NT
- Fix commandv() regression on Windows NT
- Fix sigprocmask() strace bug on OpenBSD
- Add many more system calls to --strace logging
- Make errno state more pristine in redbean strace
This commit is contained in:
Justine Tunney 2022-03-19 03:37:00 -07:00
parent 10a766ebd0
commit 39688a73e4
69 changed files with 460 additions and 1976 deletions
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33
libc/calls/isregularfile.c
View file

@ -19,6 +19,7 @@
#include "libc/bits/weaken.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/strace.internal.h"
#include "libc/calls/struct/metastat.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
@ -35,34 +36,40 @@
* return fstatat(AT_FDCWD, path, &st, AT_SYMLINK_NOFOLLOW) != -1 &&
* S_ISREG(st.st_mode);
*
* Except faster and with fewer dependencies.
* Except faster, with fewer dependencies, and less errno clobbering.
*
* @see isdirectory(), ischardev(), issymlink()
*/
bool isregularfile(const char *path) {
int e;
bool res;
union metastat st;
struct ZiposUri zipname;
if (IsAsan() && !__asan_is_valid(path, 1)) return efault();
if (weaken(__zipos_open) && weaken(__zipos_parseuri)(path, &zipname) != -1) {
e = errno;
e = errno;
if (IsAsan() && !__asan_is_valid(path, 1)) {
efault();
res = false;
} else if (weaken(__zipos_open) &&
weaken(__zipos_parseuri)(path, &zipname) != -1) {
if (weaken(__zipos_stat)(&zipname, &st.cosmo) != -1) {
return S_ISREG(st.cosmo.st_mode);
res = !!S_ISREG(st.cosmo.st_mode);
} else {
errno = e;
return false;
res = false;
}
} else if (IsMetal()) {
return false;
res = false;
} else if (!IsWindows()) {
e = errno;
if (__sys_fstatat(AT_FDCWD, path, &st, AT_SYMLINK_NOFOLLOW) != -1) {
return S_ISREG(METASTAT(st, st_mode));
res = S_ISREG(METASTAT(st, st_mode));
} else {
errno = e;
return false;
res = false;
}
} else {
return isregularfile_nt(path);
res = isregularfile_nt(path);
}
STRACE("%s(%#s) → %hhhd% m", "isregularfile", path, res);
if (!res && (errno == ENOENT || errno == ENOTDIR)) {
errno = e;
}
return res;
}