mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-10 23:30:07 +00:00
87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
/* Copyright (C) 1991-2015 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <hurd.h>
|
|
#include <hurd/signal.h>
|
|
#include <hurd/msg.h>
|
|
|
|
/* If SET is not NULL, modify the current set of blocked signals
|
|
according to HOW, which may be SIG_BLOCK, SIG_UNBLOCK or SIG_SETMASK.
|
|
If OSET is not NULL, store the old set of blocked signals in *OSET. */
|
|
int
|
|
__sigprocmask (how, set, oset)
|
|
int how;
|
|
const sigset_t *set;
|
|
sigset_t *oset;
|
|
{
|
|
struct hurd_sigstate *ss;
|
|
sigset_t old, new;
|
|
sigset_t pending;
|
|
|
|
if (set != NULL)
|
|
new = *set;
|
|
|
|
ss = _hurd_self_sigstate ();
|
|
|
|
__spin_lock (&ss->lock);
|
|
|
|
old = ss->blocked;
|
|
|
|
if (set != NULL)
|
|
{
|
|
switch (how)
|
|
{
|
|
case SIG_BLOCK:
|
|
__sigorset (&ss->blocked, &ss->blocked, &new);
|
|
break;
|
|
|
|
case SIG_UNBLOCK:
|
|
ss->blocked &= ~new;
|
|
break;
|
|
|
|
case SIG_SETMASK:
|
|
ss->blocked = new;
|
|
break;
|
|
|
|
default:
|
|
__spin_unlock (&ss->lock);
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
ss->blocked &= ~_SIG_CANT_MASK;
|
|
}
|
|
|
|
pending = ss->pending & ~ss->blocked;
|
|
|
|
__spin_unlock (&ss->lock);
|
|
|
|
if (oset != NULL)
|
|
*oset = old;
|
|
|
|
if (pending)
|
|
/* Send a message to the signal thread so it
|
|
will wake up and check for pending signals. */
|
|
__msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
|
|
|
|
return 0;
|
|
}
|
|
|
|
weak_alias (__sigprocmask, sigprocmask)
|