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Use fchmodat2 in fchmodat wrapper

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This commit is contained in:
Stephen Gregoratto 2023-11-19 18:03:58 +11:00
parent 2567220f64
commit 5010be9684
1 changed files with 11 additions and 1 deletions
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12
libc/calls/fchmodat.c
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@ -20,6 +20,7 @@
#include "libc/calls/syscall-nt.internal.h" #include "libc/calls/syscall-nt.internal.h"
#include "libc/calls/syscall-sysv.internal.h" #include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h" #include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/asan.internal.h" #include "libc/intrin/asan.internal.h"
#include "libc/intrin/describeflags.internal.h" #include "libc/intrin/describeflags.internal.h"
#include "libc/intrin/strace.internal.h" #include "libc/intrin/strace.internal.h"
@ -28,6 +29,7 @@
#include "libc/sysv/errfuns.h" #include "libc/sysv/errfuns.h"
int sys_fchmodat_linux(int, const char *, unsigned, int); int sys_fchmodat_linux(int, const char *, unsigned, int);
int sys_fchmodat2(int, const char *, unsigned, int);
/** /**
* Changes permissions on file, e.g.: * Changes permissions on file, e.g.:
@ -40,6 +42,9 @@ int sys_fchmodat_linux(int, const char *, unsigned, int);
* @param mode contains octal flags (base 8) * @param mode contains octal flags (base 8)
* @param flags can have `AT_SYMLINK_NOFOLLOW` * @param flags can have `AT_SYMLINK_NOFOLLOW`
* @raise EROFS if `dirfd` or `path` use zip file system * @raise EROFS if `dirfd` or `path` use zip file system
* @raise EOPNOTSUP on Linux if `path` is a symbolic link, `AT_SYMLINK_NOFOLLOW`
* is set in `flags`, and filesystem does not support setting the mode of
* symbolic links.
* @errors ENOENT, ENOTDIR, ENOSYS * @errors ENOENT, ENOTDIR, ENOSYS
* @asyncsignalsafe * @asyncsignalsafe
* @see fchmod() * @see fchmod()
@ -53,7 +58,12 @@ int fchmodat(int dirfd, const char *path, uint32_t mode, int flags) {
rc = erofs(); rc = erofs();
} else if (!IsWindows()) { } else if (!IsWindows()) {
if (IsLinux() && flags) { if (IsLinux() && flags) {
rc = sys_fchmodat_linux(dirfd, path, mode, flags); int serrno = errno;
rc = sys_fchmodat2(dirfd, path, mode, flags);
if (rc == -1 && errno == ENOSYS) {
errno = serrno;
rc = sys_fchmodat_linux(dirfd, path, mode, flags);
}
} else { } else {
rc = sys_fchmodat(dirfd, path, mode, flags); rc = sys_fchmodat(dirfd, path, mode, flags);
} }