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- /* Copyright (C) 1992 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 Library General Public License as
- published by the Free Software Foundation; either version 2 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <ansidecl.h>
- #include <errno.h>
- #include <signal.h>
- #include <hurd.h>
-
- /* Run signals handlers on the stack specified by SS (if not NULL).
- If OSS is not NULL, it is filled in with the old signal stack status. */
- int
- DEFUN(sigstack, (ss, oss),
- CONST struct sigstack *ss AND struct sigstack *oss)
- {
- struct sigaltstack as, oas;
-
- as.ss_sp = ss->ss_sp;
- as.ss_size = 0;
- as.ss_flags = 0;
-
- if (sigaltstack (&as, &oas) < 0)
- return -1;
-
- if (oss != NULL)
- {
- oss->ss_sp = oas.ss_sp;
- oss->ss_onstack = oas.ss_flags & SA_ONSTACK;
- }
-
- return 0;
- }
-