make 'user_access_begin()' do 'access_ok()'

[linux-2.6-microblaze.git] / kernel / exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index c3c7ac5..2d14979 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -73,6 +73,7 @@ static void __unhash_process(struct task_struct *p, bool group_dead)
        nr_threads--;
        detach_pid(p, PIDTYPE_PID);
        if (group_dead) {
+               detach_pid(p, PIDTYPE_TGID);
                detach_pid(p, PIDTYPE_PGID);
                detach_pid(p, PIDTYPE_SID);
 
@@ -680,7 +681,8 @@ static void forget_original_parent(struct task_struct *father,
                                t->parent = t->real_parent;
                        if (t->pdeath_signal)
                                group_send_sig_info(t->pdeath_signal,
-                                                   SEND_SIG_NOINFO, t);
+                                                   SEND_SIG_NOINFO, t,
+                                                   PIDTYPE_TGID);
                }
                /*
                 * If this is a threaded reparent there is no need to
@@ -1001,14 +1003,6 @@ struct wait_opts {
        int                     notask_error;
 };
 
-static inline
-struct pid *task_pid_type(struct task_struct *task, enum pid_type type)
-{
-       if (type != PIDTYPE_PID)
-               task = task->group_leader;
-       return task->pids[type].pid;
-}
-
 static int eligible_pid(struct wait_opts *wo, struct task_struct *p)
 {
        return  wo->wo_type == PIDTYPE_MAX ||
@@ -1610,10 +1604,9 @@ SYSCALL_DEFINE5(waitid, int, which, pid_t, upid, struct siginfo __user *,
        if (!infop)
                return err;
 
-       if (!access_ok(VERIFY_WRITE, infop, sizeof(*infop)))
+       if (!user_access_begin(infop, sizeof(*infop)))
                return -EFAULT;
 
-       user_access_begin();
        unsafe_put_user(signo, &infop->si_signo, Efault);
        unsafe_put_user(0, &infop->si_errno, Efault);
        unsafe_put_user(info.cause, &infop->si_code, Efault);
@@ -1738,10 +1731,9 @@ COMPAT_SYSCALL_DEFINE5(waitid,
        if (!infop)
                return err;
 
-       if (!access_ok(VERIFY_WRITE, infop, sizeof(*infop)))
+       if (!user_access_begin(infop, sizeof(*infop)))
                return -EFAULT;
 
-       user_access_begin();
        unsafe_put_user(signo, &infop->si_signo, Efault);
        unsafe_put_user(0, &infop->si_errno, Efault);
        unsafe_put_user(info.cause, &infop->si_code, Efault);