#include <linux/syscalls.h>
#include <linux/rmap.h>
#include <linux/acct.h>
+#include <linux/cn_proc.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
/*
* Account for the thread group leader hanging around:
*/
- count = 2;
- if (thread_group_leader(current))
- count = 1;
- else {
+ count = 1;
+ if (!thread_group_leader(current)) {
+ count = 2;
/*
* The SIGALRM timer survives the exec, but needs to point
* at us as the new group leader now. We have a race with
* before we can safely let the old group leader die.
*/
sig->real_timer.data = (unsigned long)current;
+ spin_unlock_irq(lock);
if (del_timer_sync(&sig->real_timer))
add_timer(&sig->real_timer);
+ spin_lock_irq(lock);
}
while (atomic_read(&sig->count) > count) {
sig->group_exit_task = current;
}
sig->group_exit_task = NULL;
sig->notify_count = 0;
- sig->real_timer.data = (unsigned long)current;
spin_unlock_irq(lock);
/*
fput(bprm->file);
bprm->file = NULL;
current->did_exec = 1;
+ proc_exec_connector(current);
return retval;
}
read_lock(&binfmt_lock);
static void coredump_wait(struct mm_struct *mm)
{
DECLARE_COMPLETION(startup_done);
+ int core_waiters;
- mm->core_waiters++; /* let other threads block */
mm->core_startup_done = &startup_done;
- /* give other threads a chance to run: */
- yield();
-
zap_threads(mm);
- if (--mm->core_waiters) {
- up_write(&mm->mmap_sem);
+ core_waiters = mm->core_waiters;
+ up_write(&mm->mmap_sem);
+
+ if (core_waiters)
wait_for_completion(&startup_done);
- } else
- up_write(&mm->mmap_sem);
BUG_ON(mm->core_waiters);
}
current->fsuid = 0; /* Dump root private */
}
mm->dumpable = 0;
- init_completion(&mm->core_done);
+
+ retval = -EAGAIN;
spin_lock_irq(¤t->sighand->siglock);
- current->signal->flags = SIGNAL_GROUP_EXIT;
- current->signal->group_exit_code = exit_code;
+ if (!(current->signal->flags & SIGNAL_GROUP_EXIT)) {
+ current->signal->flags = SIGNAL_GROUP_EXIT;
+ current->signal->group_exit_code = exit_code;
+ retval = 0;
+ }
spin_unlock_irq(¤t->sighand->siglock);
+ if (retval) {
+ up_write(&mm->mmap_sem);
+ goto fail;
+ }
+
+ init_completion(&mm->core_done);
coredump_wait(mm);
/*
goto close_fail;
if (!file->f_op->write)
goto close_fail;
- if (do_truncate(file->f_dentry, 0) != 0)
+ if (do_truncate(file->f_dentry, 0, file) != 0)
goto close_fail;
retval = binfmt->core_dump(signr, regs, file);