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CRED: Wrap task credential accesses in the MIPS arch

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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>
This commit is contained in:
David Howells 2008-11-14 10:38:37 +11:00 committed by James Morris
parent ef81ee9855
commit b4212737a3
1 changed files with 3 additions and 2 deletions
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5
arch/mips/kernel/mips-mt-fpaff.c
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@ -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;
}