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authorDavid Howells <dhowells@redhat.com>2008-11-14 10:38:37 +1100
committerJames Morris <jmorris@namei.org>2008-11-14 10:38:37 +1100
commitb4212737a39e4cfb0fb66769acbc0bd182a93253 (patch)
tree96a3b7aa0a8d6aa94baaf25204e77254625eab6c
parentef81ee9855d6c605ed6090a8018c78572cc68b5c (diff)
CRED: Wrap task credential accesses in the MIPS 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@redhat.com> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Signed-off-by: James Morris <jmorris@namei.org>
-rw-r--r--arch/mips/kernel/mips-mt-fpaff.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/mips/kernel/mips-mt-fpaff.c b/arch/mips/kernel/mips-mt-fpaff.c
index dc9eb72ed9d..5e77a3a21f9 100644
--- a/arch/mips/kernel/mips-mt-fpaff.c
+++ b/arch/mips/kernel/mips-mt-fpaff.c
@@ -51,6 +51,7 @@ asmlinkage long mipsmt_sys_sched_setaffinity(pid_t pid, unsigned int len,
int retval;
struct task_struct *p;
struct thread_info *ti;
+ uid_t euid;
if (len < sizeof(new_mask))
return -EINVAL;
@@ -76,9 +77,9 @@ asmlinkage long mipsmt_sys_sched_setaffinity(pid_t pid, unsigned int len,
*/
get_task_struct(p);
+ euid = current_euid();
retval = -EPERM;
- if ((current->euid != p->euid) && (current->euid != p->uid) &&
- !capable(CAP_SYS_NICE)) {
+ if (euid != p->euid && euid != p->uid && !capable(CAP_SYS_NICE)) {
read_unlock(&tasklist_lock);
goto out_unlock;
}