aboutsummaryrefslogtreecommitdiff
path: root/kernel/user.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/user.c')
-rw-r--r--kernel/user.c37
1 files changed, 1 insertions, 36 deletions
diff --git a/kernel/user.c b/kernel/user.c
index 104d22ac84d..d476307dd4b 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -16,6 +16,7 @@
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/user_namespace.h>
+#include "cred-internals.h"
struct user_namespace init_user_ns = {
.kref = {
@@ -104,16 +105,10 @@ static int sched_create_user(struct user_struct *up)
return rc;
}
-static void sched_switch_user(struct task_struct *p)
-{
- sched_move_task(p);
-}
-
#else /* CONFIG_USER_SCHED */
static void sched_destroy_user(struct user_struct *up) { }
static int sched_create_user(struct user_struct *up) { return 0; }
-static void sched_switch_user(struct task_struct *p) { }
#endif /* CONFIG_USER_SCHED */
@@ -448,36 +443,6 @@ out_unlock:
return NULL;
}
-void switch_uid(struct user_struct *new_user)
-{
- struct user_struct *old_user;
-
- /* What if a process setreuid()'s and this brings the
- * new uid over his NPROC rlimit? We can check this now
- * cheaply with the new uid cache, so if it matters
- * we should be checking for it. -DaveM
- */
- old_user = current->cred->user;
- atomic_inc(&new_user->processes);
- atomic_dec(&old_user->processes);
- switch_uid_keyring(new_user);
- current->cred->user = new_user;
- sched_switch_user(current);
-
- /*
- * We need to synchronize with __sigqueue_alloc()
- * doing a get_uid(p->user).. If that saw the old
- * user value, we need to wait until it has exited
- * its critical region before we can free the old
- * structure.
- */
- smp_mb();
- spin_unlock_wait(&current->sighand->siglock);
-
- free_uid(old_user);
- suid_keys(current);
-}
-
#ifdef CONFIG_USER_NS
void release_uids(struct user_namespace *ns)
{