[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 <mszeredi@suse.cz>

1 files changed, 0 insertions, 8 deletions

diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 7e19835efa2e..c69b7ac75bf7 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -511,13 +511,6 @@ void hfs_clear_inode(struct inode *inode)
         }
 }
 
-static int hfs_permission(struct inode *inode, int mask)
-{
-        if (S_ISREG(inode->i_mode) && mask & MAY_EXEC)
-                return 0;
-        return generic_permission(inode, mask, NULL);
-}
-
 static int hfs_file_open(struct inode *inode, struct file *file)
 {
         if (HFS_IS_RSRC(inode))
@@ -616,7 +609,6 @@ static const struct inode_operations hfs_file_inode_operations = {
         .lookup         = hfs_file_lookup,
         .truncate       = hfs_file_truncate,
         .setattr        = hfs_inode_setattr,
-        .permission     = hfs_permission,
         .setxattr       = hfs_setxattr,
         .getxattr       = hfs_getxattr,
         .listxattr      = hfs_listxattr,