Function at2cnpflags

freebsd/kern/vfs_syscalls.c:113–133

    const char *path, enum uio_seg segflag);

static uint64_t
at2cnpflags(u_int at_flags, u_int mask)
{
	u_int64_t res;

	MPASS((at_flags & (AT_SYMLINK_FOLLOW | AT_SYMLINK_NOFOLLOW)) !=
	    (AT_SYMLINK_FOLLOW | AT_SYMLINK_NOFOLLOW));

	res = 0;
	at_flags &= mask;
	if ((at_flags & AT_RESOLVE_BENEATH) != 0)
		res |= RBENEATH;
	if ((at_flags & AT_SYMLINK_FOLLOW) != 0)
		res |= FOLLOW;
	/* NOFOLLOW is pseudo flag */
	if ((mask & AT_SYMLINK_NOFOLLOW) != 0) {
		res |= (at_flags & AT_SYMLINK_NOFOLLOW) != 0 ? NOFOLLOW :
		    FOLLOW;
	}
	return (res);
}

int
kern_sync(struct thread *td)