CRED: Wrap task credential accesses in the AFFS filesystem

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: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: James Morris <jmorris@namei.org>

diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index a13b334..415d9c6 100644 (file)
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -293,8 +293,8 @@ affs_new_inode(struct inode *dir)
        mark_buffer_dirty_inode(bh, inode);
        affs_brelse(bh);
 
-       inode->i_uid     = current->fsuid;
-       inode->i_gid     = current->fsgid;
+       inode->i_uid     = current_fsuid();
+       inode->i_gid     = current_fsgid();
        inode->i_ino     = block;
        inode->i_nlink   = 1;
        inode->i_mtime   = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;

diff --git a/fs/affs/super.c b/fs/affs/super.c
index 8989c93..a19d64b 100644 (file)
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -163,8 +163,8 @@ parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s
 
        /* Fill in defaults */
 
-       *uid        = current->uid;
-       *gid        = current->gid;
+       *uid        = current_uid();
+       *gid        = current_gid();
        *reserved   = 2;
        *root       = -1;
        *blocksize  = -1;