deny partial write for loop dev fd

[linux-2.6] / kernel / exit.c

diff --git a/kernel/exit.c b/kernel/exit.c
index 464c2b172f07477ca27a453edcf93fb6eeebe1c6..7f7959de4a87b22e013d001b05f0cba4dfe0cefa 100644 (file)
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -24,7 +24,6 @@
 #include <linux/pid_namespace.h>
 #include <linux/ptrace.h>
 #include <linux/profile.h>
-#include <linux/signalfd.h>
 #include <linux/mount.h>
 #include <linux/proc_fs.h>
 #include <linux/kthread.h>
@@ -86,14 +85,6 @@ static void __exit_signal(struct task_struct *tsk)
        sighand = rcu_dereference(tsk->sighand);
        spin_lock(&sighand->siglock);
 
-       /*
-        * Notify that this sighand has been detached. This must
-        * be called with the tsk->sighand lock held. Also, this
-        * access tsk->sighand internally, so it must be called
-        * before tsk->sighand is reset.
-        */
-       signalfd_detach_locked(tsk);
-
        posix_cpu_timers_exit(tsk);
        if (atomic_dec_and_test(&sig->count))
                posix_cpu_timers_exit_group(tsk);
@@ -120,6 +111,7 @@ static void __exit_signal(struct task_struct *tsk)
                 */
                sig->utime = cputime_add(sig->utime, tsk->utime);
                sig->stime = cputime_add(sig->stime, tsk->stime);
+               sig->gtime = cputime_add(sig->gtime, tsk->gtime);
                sig->min_flt += tsk->min_flt;
                sig->maj_flt += tsk->maj_flt;
                sig->nvcsw += tsk->nvcsw;
@@ -813,7 +805,7 @@ static void exit_notify(struct task_struct *tsk)
                __kill_pgrp_info(SIGCONT, SEND_SIG_PRIV, pgrp);
        }
 
-       /* Let father know we died 
+       /* Let father know we died
         *
         * Thread signals are configurable, but you aren't going to use
         * that to send signals to arbitary processes. 
@@ -826,9 +818,7 @@ static void exit_notify(struct task_struct *tsk)
         * If our self_exec id doesn't match our parent_exec_id then
         * we have changed execution domain as these two values started
         * the same after a fork.
-        *      
         */
-       
        if (tsk->exit_signal != SIGCHLD && tsk->exit_signal != -1 &&
            ( tsk->parent_exec_id != t->self_exec_id  ||
              tsk->self_exec_id != tsk->parent_exec_id)
@@ -848,9 +838,7 @@ static void exit_notify(struct task_struct *tsk)
        }
 
        state = EXIT_ZOMBIE;
-       if (tsk->exit_signal == -1 &&
-           (likely(tsk->ptrace == 0) ||
-            unlikely(tsk->parent->signal->flags & SIGNAL_GROUP_EXIT)))
+       if (tsk->exit_signal == -1 && likely(!tsk->ptrace))
                state = EXIT_DEAD;
        tsk->exit_state = state;
 
@@ -979,6 +967,7 @@ fastcall NORET_TYPE void do_exit(long code)
        if (unlikely(tsk->audit_context))
                audit_free(tsk);
 
+       tsk->exit_code = code;
        taskstats_exit(tsk, group_dead);
 
        exit_mm(tsk);
@@ -1000,7 +989,6 @@ fastcall NORET_TYPE void do_exit(long code)
        if (tsk->binfmt)
                module_put(tsk->binfmt->module);
 
-       tsk->exit_code = code;
        proc_exit_connector(tsk);
        exit_task_namespaces(tsk);
        exit_notify(tsk);
@@ -1255,6 +1243,11 @@ static int wait_task_zombie(struct task_struct *p, int noreap,
                        cputime_add(p->stime,
                        cputime_add(sig->stime,
                                    sig->cstime)));
+               psig->cgtime =
+                       cputime_add(psig->cgtime,
+                       cputime_add(p->gtime,
+                       cputime_add(sig->gtime,
+                                   sig->cgtime)));
                psig->cmin_flt +=
                        p->min_flt + sig->min_flt + sig->cmin_flt;
                psig->cmaj_flt +=