Attachment #865440 for bug #910273

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int sb_exists(int dirfd, const char *pathname, int flags)
{
	struct stat64 buf;

	if (faccessat(dirfd, pathname, F_OK, flags) == 0)
		return 0;

	/* musl's faccessat gives EINVAL when the kernel does not support
	 * faccessat2 and AT_SYMLINK_NOFOLLOW is set.
	 * https://www.openwall.com/lists/musl/2023/06/19/1 */
	if (errno != EINVAL)
		return -1;

	return fstatat64(dirfd, pathname, &buf, flags);
}

Return to bug 910273

Lines 10-24 Link Here

(-)a/libsbutil/sb_exists.c (-10 lines)
10	int sb_exists(int dirfd, const char *pathname, int flags)	10	int sb_exists(int dirfd, const char *pathname, int flags)
11	{	11	{
12	struct stat64 buf;	12	struct stat64 buf;
13
14	if (faccessat(dirfd, pathname, F_OK, flags) == 0)
15	return 0;
16
17	/* musl's faccessat gives EINVAL when the kernel does not support
18	* faccessat2 and AT_SYMLINK_NOFOLLOW is set.
19	* https://www.openwall.com/lists/musl/2023/06/19/1 */
20	if (errno != EINVAL)
21	return -1;
22
23	return fstatat64(dirfd, pathname, &buf, flags);	13	return fstatat64(dirfd, pathname, &buf, flags);
24	}	14	}