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glibc/signal/sigprocmask.c
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/* Copyright (C) 1991-2016 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> | |
/* 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 (int how, const sigset_t *set, sigset_t *oset) | |
{ | |
switch (how) | |
{ | |
case SIG_BLOCK: | |
case SIG_UNBLOCK: | |
case SIG_SETMASK: | |
break; | |
default: | |
__set_errno (EINVAL); | |
return -1; | |
} | |
__set_errno (ENOSYS); | |
return -1; | |
} | |
/* No stub warning because abort calls __sigprocmask, | |
and we don't want warnings for every use of abort on | |
a system without safe signals. */ | |
weak_alias (__sigprocmask, sigprocmask) |