From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/unix/bsd/sigaction.c | 62 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 sysdeps/unix/bsd/sigaction.c (limited to 'sysdeps/unix/bsd/sigaction.c') diff --git a/sysdeps/unix/bsd/sigaction.c b/sysdeps/unix/bsd/sigaction.c new file mode 100644 index 0000000000..aa1c53f6cd --- /dev/null +++ b/sysdeps/unix/bsd/sigaction.c @@ -0,0 +1,62 @@ +/* Copyright (C) 1991, 1995 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 +#include +#include +#include +#include + + +/* If ACT is not NULL, change the action for SIG to *ACT. + If OACT is not NULL, put the old action for SIG in *OACT. */ +int +DEFUN(__sigaction, (sig, act, oact), + int sig AND CONST struct sigaction *act AND struct sigaction *oact) +{ + struct sigvec vec, ovec; + + if (sig <= 0 || sig >= NSIG) + { + errno = EINVAL; + return -1; + } + + if (act != NULL) + { + vec.sv_mask = act->sa_mask; + vec.sv_handler = act->sa_handler; + vec.sv_flags = (((act->sa_flags & SA_ONSTACK) ? SV_ONSTACK : 0) | + (!(act->sa_flags & SA_RESTART) ? SV_INTERRUPT : 0)); + } + + if (__sigvec(sig, act != NULL ? &vec : (struct sigvec *) NULL, &ovec) < 0) + return -1; + + if (oact != NULL) + { + oact->sa_handler = (void EXFUN((*), (int))) ovec.sv_handler; + oact->sa_mask = ovec.sv_mask; + oact->sa_flags = (((ovec.sv_flags & SV_ONSTACK) ? SA_ONSTACK : 0) | + (!(ovec.sv_flags & SV_INTERRUPT) ? SA_RESTART : 0)); + } + + return 0; +} + +weak_alias (__sigaction, sigaction) -- cgit 1.4.1