diff options
| author | Ted Unangst <tedu@cvs.openbsd.org> | 2003-05-06 20:42:52 +0000 |
|---|---|---|
| committer | Ted Unangst <tedu@cvs.openbsd.org> | 2003-05-06 20:42:52 +0000 |
| commit | ea2a254842c844fb2a2272dc2da859fe0959d418 (patch) | |
| tree | 6e96199d99d8b0d712e5bbd3e025f791851586c0 /sys/kern/vfs_lookup.c | |
| parent | f7c753712d59639b9eac56ea6f556eb65e44aaa5 (diff) | |
avoid doing a lookup on no longer mounted directories.
fixes a crash with forced unmounts. from netbsd
Diffstat (limited to 'sys/kern/vfs_lookup.c')
| -rw-r--r-- | sys/kern/vfs_lookup.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/kern/vfs_lookup.c b/sys/kern/vfs_lookup.c index 5a1b249a389..b0b0ec0f4d5 100644 --- a/sys/kern/vfs_lookup.c +++ b/sys/kern/vfs_lookup.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vfs_lookup.c,v 1.23 2003/05/04 00:22:12 tedu Exp $ */ +/* $OpenBSD: vfs_lookup.c,v 1.24 2003/05/06 20:42:51 tedu Exp $ */ /* $NetBSD: vfs_lookup.c,v 1.17 1996/02/09 19:00:59 christos Exp $ */ /* @@ -167,6 +167,11 @@ namei(ndp) VREF(dp); } for (;;) { + if (!dp->v_mount) { + /* Give up if the directory is no longer mounted */ + FREE(cnp->cn_pnbuf, M_NAMEI); + return (ENOENT); + } cnp->cn_nameptr = cnp->cn_pnbuf; ndp->ni_startdir = dp; if ((error = lookup(ndp)) != 0) { |