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authorMiklos Szeredi <miklos@szeredi.hu>2005-09-27 21:45:21 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-28 07:46:40 -0700
commitee4e52719ce474af339f4b81ece2ce9ecf920dfd (patch)
treeffcc4b530d1cc88d35b665b7efcfc93a0044800f /fs/fuse
parent909021ea7a8f4ef13af54935b87b03a20906e08a (diff)
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[PATCH] fuse: check reserved node ID values
This patch checks reserved node ID values returned by lookup and creation operations. In case one of the reserved values is sent, return -EIO. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/fuse')
-rw-r--r--fs/fuse/dir.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index e79e49b..29f1e9f 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -96,6 +96,8 @@ static int fuse_lookup_iget(struct inode *dir, struct dentry *entry,
fuse_lookup_init(req, dir, entry, &outarg);
request_send(fc, req);
err = req->out.h.error;
+ if (!err && (!outarg.nodeid || outarg.nodeid == FUSE_ROOT_ID))
+ err = -EIO;
if (!err) {
inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation,
&outarg.attr);
@@ -152,6 +154,10 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
fuse_put_request(fc, req);
return err;
}
+ if (!outarg.nodeid || outarg.nodeid == FUSE_ROOT_ID) {
+ fuse_put_request(fc, req);
+ return -EIO;
+ }
inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation,
&outarg.attr);
if (!inode) {