From ee4e52719ce474af339f4b81ece2ce9ecf920dfd Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 27 Sep 2005 21:45:21 -0700 Subject: [PATCH] [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/fuse/dir.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index e79e49b3eec7..29f1e9f6e85c 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) { -- GitLab