From f696a3659fc4b3a3bf4bc83d9dbec5e5a2ffd929 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 31 Jul 2008 13:41:58 +0200 Subject: [PATCH] move executable checking into ->permission() For execute permission on a regular files we need to check if file has any execute bits at all, regardless of capabilites. This check is normally performed by generic_permission() but was also added to the case when the filesystem defines its own ->permission() method. In the latter case the filesystem should be responsible for performing this check. Move the check from inode_permission() inside filesystems which are not calling generic_permission(). Create a helper function execute_ok() that returns true if the inode is a directory or if any execute bits are present in i_mode. Also fix up the following code: - coda control file is never executable - sysctl files are never executable - hfs_permission seems broken on MAY_EXEC, remove - hfsplus_permission is eqivalent to generic_permission(), remove Signed-off-by: Miklos Szeredi --- fs/nfs/dir.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/nfs/dir.c') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index c216c8786c5..3e64b98f3a9 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1957,6 +1957,9 @@ force_lookup: } else res = PTR_ERR(cred); out: + if (!res && (mask & MAY_EXEC) && !execute_ok(inode)) + res = -EACCES; + dfprintk(VFS, "NFS: permission(%s/%ld), mask=0x%x, res=%d\n", inode->i_sb->s_id, inode->i_ino, mask, res); return res; -- cgit v1.2.3-70-g09d2