diff options
Diffstat (limited to 'sysdeps/posix/sigset.c')
-rw-r--r-- | sysdeps/posix/sigset.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/sysdeps/posix/sigset.c b/sysdeps/posix/sigset.c deleted file mode 100644 index a4dfe0ae93..0000000000 --- a/sysdeps/posix/sigset.c +++ /dev/null @@ -1,75 +0,0 @@ -/* Copyright (C) 1998-2017 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> -#define __need_NULL -#include <stddef.h> -#include <signal.h> -#include <string.h> /* For the real memset prototype. */ -#include <sigsetops.h> - -/* Set the disposition for SIG. */ -__sighandler_t -sigset (int sig, __sighandler_t disp) -{ - struct sigaction act; - struct sigaction oact; - sigset_t set; - sigset_t oset; - - /* Check signal extents to protect __sigismember. */ - if (disp == SIG_ERR || sig < 1 || sig >= NSIG) - { - __set_errno (EINVAL); - return SIG_ERR; - } - - __sigemptyset (&set); - __sigaddset (&set, sig); - - if (disp == SIG_HOLD) - { - /* Add the signal to the current signal mask. */ - if (__sigprocmask (SIG_BLOCK, &set, &oset) < 0) - return SIG_ERR; - - /* If the signal was already blocked signal this to the caller. */ - if (__sigismember (&oset, sig)) - return SIG_HOLD; - - /* We need to determine whether a specific handler is installed. */ - if (__sigaction (sig, NULL, &oact) < 0) - return SIG_ERR; - - return oact.sa_handler; - } - else - { - act.sa_handler = disp; - __sigemptyset (&act.sa_mask); - act.sa_flags = 0; - if (__sigaction (sig, &act, &oact) < 0) - return SIG_ERR; - - /* Remove the signal from the current signal mask. */ - if (__sigprocmask (SIG_UNBLOCK, &set, &oset) < 0) - return SIG_ERR; - - /* If the signal was already blocked return SIG_HOLD. */ - return __sigismember (&oset, sig) ? SIG_HOLD : oact.sa_handler; - } -} |