| /* Copyright (C) 1991-2014 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) |