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authorDavid Howells <dhowells@redhat.com>2008-11-14 10:38:51 +1100
committerJames Morris <jmorris@namei.org>2008-11-14 10:38:51 +1100
commit6a2f90e9fae0824e8b6b123f1ea7d9fff9079ef3 (patch)
tree7ae64fd6e64eefbafd021f4c3afaeba1673c3f1c /fs/ext3
parenta8dd4d67bdf9c48c5ebfa366592fde7e2d318b4f (diff)
downloadlinux-6a2f90e9fae0824e8b6b123f1ea7d9fff9079ef3.tar.gz
CRED: Wrap task credential accesses in the Ext3 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: Stephen Tweedie <sct@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: adilger@sun.com
Cc: linux-ext4@vger.kernel.org
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'fs/ext3')
-rw-r--r--fs/ext3/balloc.c2
-rw-r--r--fs/ext3/ialloc.c4
2 files changed, 3 insertions, 3 deletions
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index f5b57a2ca35a..0dbf1c048475 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -1422,7 +1422,7 @@ static int ext3_has_free_blocks(struct ext3_sb_info *sbi)
 	free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
 	root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
 	if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
-		sbi->s_resuid != current->fsuid &&
+		sbi->s_resuid != current_fsuid() &&
 		(sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) {
 		return 0;
 	}
diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c
index 47b678d73e7a..490bd0ed7896 100644
--- a/fs/ext3/ialloc.c
+++ b/fs/ext3/ialloc.c
@@ -539,7 +539,7 @@ got:
 		percpu_counter_inc(&sbi->s_dirs_counter);
 	sb->s_dirt = 1;
 
-	inode->i_uid = current->fsuid;
+	inode->i_uid = current_fsuid();
 	if (test_opt (sb, GRPID))
 		inode->i_gid = dir->i_gid;
 	else if (dir->i_mode & S_ISGID) {
@@ -547,7 +547,7 @@ got:
 		if (S_ISDIR(mode))
 			mode |= S_ISGID;
 	} else
-		inode->i_gid = current->fsgid;
+		inode->i_gid = current_fsgid();
 	inode->i_mode = mode;
 
 	inode->i_ino = ino;