12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455 |
- /* Copyright (C) 1992, 1994, 1996, 2002 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 <signal.h>
- /* If INTERRUPT is nonzero, make signal SIG interrupt system calls
- (causing them to fail with EINTR); if INTERRUPT is zero, make system
- calls be restarted after signal SIG. */
- #ifdef SA_RESTART
- # define __need_NULL
- # include <stddef.h>
- #else
- # include <errno.h>
- #endif
- int siginterrupt (int sig, int interrupt)
- {
- #ifdef SA_RESTART
- struct sigaction action;
- /* Fails if sig is bad. */
- if (sigaction (sig, NULL, &action) < 0)
- return -1;
- if (interrupt)
- {
- __sigaddset (&_sigintr, sig);
- action.sa_flags &= ~SA_RESTART;
- }
- else
- {
- __sigdelset (&_sigintr, sig);
- action.sa_flags |= SA_RESTART;
- }
- return sigaction (sig, &action, NULL);
- #else
- __set_errno (ENOSYS);
- return -1;
- #endif
- }
|