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Message-ID: <20080827134602.19980.59222.stgit@warthog.procyon.org.uk>
Date: Wed, 27 Aug 2008 14:46:02 +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>,
Paul Mackerras <paulus@...ba.org>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
linuxppc-dev@...abs.org
Subject: [PATCH 04/59] CRED: Wrap task credential accesses in the PowerPC arch
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: Paul Mackerras <paulus@...ba.org>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: linuxppc-dev@...abs.org
---
arch/powerpc/mm/fault.c | 2 +-
arch/powerpc/platforms/cell/spufs/inode.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 565b7a2..8660986 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -339,7 +339,7 @@ bad_area_nosemaphore:
&& printk_ratelimit())
printk(KERN_CRIT "kernel tried to execute NX-protected"
" page (%lx) - exploit attempt? (uid: %d)\n",
- address, current->uid);
+ address, current_uid());
return SIGSEGV;
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index 690ca7b..60bd5ed 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -95,8 +95,8 @@ spufs_new_inode(struct super_block *sb, int mode)
goto out;
inode->i_mode = mode;
- inode->i_uid = current->fsuid;
- inode->i_gid = current->fsgid;
+ inode->i_uid = current_fsuid();
+ inode->i_gid = current_fsgid();
inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
out:
--
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