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[IA64] Add TIF_RESTORE_SIGMASK

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Preparation for pselect and ppoll.
ia32 compat code not tested. :-(

Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Alexey Dobriyan
2007-01-23 19:03:17 +03:00
committed by Tony Luck
parent 690def2141
commit 4a177cbf84
8 changed files with 43 additions and 166 deletions
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59
arch/ia64/ia32/ia32_signal.c
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@@ -452,59 +452,20 @@ sigact_set_handler (struct k_sigaction *sa, unsigned int handler, unsigned int r
sa->sa.sa_handler = (__sighandler_t) (((unsigned long) restorer << 32) | handler);
}
long
__ia32_rt_sigsuspend (compat_sigset_t *sset, unsigned int sigsetsize, struct sigscratch *scr)
asmlinkage long
sys32_sigsuspend (int history0, int history1, old_sigset_t mask)
{
extern long ia64_do_signal (sigset_t *oldset, struct sigscratch *scr, long in_syscall);
sigset_t oldset, set;
scr->scratch_unat = 0; /* avoid leaking kernel bits to user level */
memset(&set, 0, sizeof(set));
memcpy(&set.sig, &sset->sig, sigsetsize);
sigdelsetmask(&set, ~_BLOCKABLE);
mask &= _BLOCKABLE;
spin_lock_irq(&current->sighand->siglock);
{
oldset = current->blocked;
current->blocked = set;
recalc_sigpending();
}
current->saved_sigmask = current->blocked;
siginitset(&current->blocked, mask);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
/*
* The return below usually returns to the signal handler. We need to pre-set the
* correct error code here to ensure that the right values get saved in sigcontext
* by ia64_do_signal.
*/
scr->pt.r8 = -EINTR;
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (ia64_do_signal(&oldset, scr, 1))
return -EINTR;
}
}
asmlinkage long
ia32_rt_sigsuspend (compat_sigset_t __user *uset, unsigned int sigsetsize, struct sigscratch *scr)
{
compat_sigset_t set;
if (sigsetsize > sizeof(compat_sigset_t))
return -EINVAL;
if (copy_from_user(&set.sig, &uset->sig, sigsetsize))
return -EFAULT;
return __ia32_rt_sigsuspend(&set, sigsetsize, scr);
}
asmlinkage long
ia32_sigsuspend (unsigned int mask, struct sigscratch *scr)
{
return __ia32_rt_sigsuspend((compat_sigset_t *) &mask, sizeof(mask), scr);
current->state = TASK_INTERRUPTIBLE;
schedule();
set_thread_flag(TIF_RESTORE_SIGMASK);
return -ERESTARTNOHAND;
}
asmlinkage long