[PATCH] fuse: check reserved node ID values (ee4e5271) · Commits · 戴 / test

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>

fs/fuse/dir.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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) {

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