CRED: Wrap task credential accesses in the PA-RISC 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: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: linux-parisc@vger.kernel.org
Signed-off-by: James Morris <jmorris@namei.org>

diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 06213d1d6d958f54d8a3139f9443aab13a5bbaed..f82544225e8e8b43b8ca76664101a849d1e8a7f7 100644 (file)
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -182,7 +182,7 @@ give_sigsegv:
        si.si_errno = 0;
        si.si_code = SI_KERNEL;
        si.si_pid = task_pid_vnr(current);
-       si.si_uid = current->uid;
+       si.si_uid = current_uid();
        si.si_addr = &frame->uc;
        force_sig_info(SIGSEGV, &si, current);
        return;