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- /* 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- #include <stddef.h>
- #include <signal.h>
- #include <errno.h>
- libc_hidden_proto(sigaction)
- /* 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
- extern sigset_t _sigintr attribute_hidden; /* Defined in signal.c. */
- #endif
- int
- siginterrupt (sig, interrupt)
- int sig;
- int interrupt;
- {
- #ifdef SA_RESTART
- struct sigaction action;
- if (sigaction (sig, (struct sigaction *) NULL, &action) < 0)
- return -1;
- if (interrupt)
- {
- __sigaddset (&_sigintr, sig);
- action.sa_flags &= ~SA_RESTART;
- }
- else
- {
- __sigdelset (&_sigintr, sig);
- action.sa_flags |= SA_RESTART;
- }
- if (sigaction (sig, &action, (struct sigaction *) NULL) < 0)
- return -1;
- return 0;
- #else
- __set_errno (ENOSYS);
- return -1;
- #endif
- }
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