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[glibc/history.git] / signal / sysv_signal.c
blob86dbb1d0935246661bc519d4f07d8337fbc56a1a
1 /* Copyright (C) 1991, 1992, 1996, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #include <errno.h>
20 #include <signal.h>
22 /* Set the handler for the signal SIG to HANDLER,
23 returning the old handler, or SIG_ERR on error. */
24 __sighandler_t
25 __sysv_signal (sig, handler)
26 int sig;
27 __sighandler_t handler;
29 /* Check signal extents to protect __sigismember. */
30 if (handler == SIG_ERR || sig < 1 || sig >= NSIG)
32 __set_errno (EINVAL);
33 return SIG_ERR;
36 __set_errno (ENOSYS);
38 return SIG_ERR;
40 weak_alias (__sysv_signal, sysv_signal)
42 stub_warning (sysv_signal)
43 #include <stub-tag.h>