linux-kernel - [PATCH 15/59] CRED: Wrap task credential accesses in the AFFS filesystem

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Date:	Wed, 27 Aug 2008 14:46:59 +0100
From:	David Howells <dhowells@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-security-module@...r.kernel.org,
	David Howells <dhowells@...hat.com>,
	Serge Hallyn <serue@...ibm.com>,
	Roman Zippel <zippel@...ux-m68k.org>
Subject: [PATCH 15/59] 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@...hat.com>
Reviewed-by: James Morris <jmorris@...ei.org>
Acked-by: Serge Hallyn <serue@...ibm.com>
Cc: Roman Zippel <zippel@...ux-m68k.org>
---

 fs/affs/inode.c |    4 ++--
 fs/affs/super.c |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)


diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index a13b334..415d9c6 100644
--- 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 3a89094..d5d9b10 100644
--- 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;

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