diff options
Diffstat (limited to 'hurd')
| -rw-r--r-- | hurd/hurd/fd.h | 5 | ||||
| -rw-r--r-- | hurd/lookup-at.c | 6 |
2 files changed, 9 insertions, 2 deletions
diff --git a/hurd/hurd/fd.h b/hurd/hurd/fd.h index d1aa867cbf..2473476084 100644 --- a/hurd/hurd/fd.h +++ b/hurd/hurd/fd.h @@ -254,8 +254,9 @@ extern int _hurd_select (int nfds, struct pollfd *pollfds, const sigset_t *sigmask); /* Variant of file_name_lookup used in *at function implementations. - AT_FLAGS should contain only AT_SYMLINK_NOFOLLOW; other bits - cause EINVAL. */ + AT_FLAGS may only contain AT_SYMLINK_FOLLOW or AT_SYMLINK_NOFOLLOW, + which will remove and add O_NOLINK from FLAGS respectively. + Other bits cause EINVAL. */ extern file_t __file_name_lookup_at (int fd, int at_flags, const char *file_name, int flags, mode_t mode); diff --git a/hurd/lookup-at.c b/hurd/lookup-at.c index 7f55527d8b..728a970909 100644 --- a/hurd/lookup-at.c +++ b/hurd/lookup-at.c @@ -30,8 +30,14 @@ __file_name_lookup_at (int fd, int at_flags, error_t err; file_t result; + if ((at_flags & AT_SYMLINK_FOLLOW) && (at_flags & AT_SYMLINK_NOFOLLOW)) + return (__hurd_fail (EINVAL), MACH_PORT_NULL); + flags |= (at_flags & AT_SYMLINK_NOFOLLOW) ? O_NOLINK : 0; at_flags &= ~AT_SYMLINK_NOFOLLOW; + if (at_flags & AT_SYMLINK_FOLLOW) + flags &= ~O_NOLINK; + at_flags &= ~AT_SYMLINK_FOLLOW; if (at_flags != 0) return (__hurd_fail (EINVAL), MACH_PORT_NULL); |