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CRED: Wrap task credential accesses in the filesystem subsystem

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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>
This commit is contained in:
David Howells
2008-11-14 10:39:05 +11:00
committed by James Morris
parent 82ab8deda7
commit da9592edeb
15 changed files with 38 additions and 36 deletions
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include/linux/fs.h
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@@ -1193,7 +1193,7 @@ enum {
#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 *);