commit da9592edebceeba1b9301beafe80ec8b9c2db0ce
author David Howells <dhowells@redhat.com> Fri Nov 14 10:39:05 2008 +1100
committer James Morris <jmorris@namei.org> Fri Nov 14 10:39:05 2008 +1100
tree 00c110cd8ff6d211d76ab4868b6175096a38aad5
parent 82ab8deda7fef36f067ccdeacc3b3caefc970f89

CRED: Wrap task credential accesses in the filesystem subsystem

Wrap access to task credentials so that they can be separated more easily from
the task_struct during the introduction of COW creds.

Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().

Change some task->e?[ug]id to task_e?[ug]id().  In some places it makes more
sense to use RCU directly rather than a convenient wrapper; these will be
addressed by later patches.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: James Morris <jmorris@namei.org>

include/linux/fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0dcdd94..b3d404a 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1193,7 +1193,7 @@
 #define has_fs_excl() atomic_read(&current->fs_excl)
 
 #define is_owner_or_cap(inode)	\
-	((current->fsuid == (inode)->i_uid) || capable(CAP_FOWNER))
+	((current_fsuid() == (inode)->i_uid) || capable(CAP_FOWNER))
 
 /* not quite ready to be deprecated, but... */
 extern void lock_super(struct super_block *);