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/sigprocmask.c | 65 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 sysdeps/unix/bsd/sigprocmask.c (limited to 'sysdeps/unix/bsd/sigprocmask.c') diff --git a/sysdeps/unix/bsd/sigprocmask.c b/sysdeps/unix/bsd/sigprocmask.c new file mode 100644 index 0000000..31ebb74 --- /dev/null +++ b/sysdeps/unix/bsd/sigprocmask.c @@ -0,0 +1,65 @@ +/* Copyright (C) 1991, 1992, 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 + + +/* If SET is not NULL, modify the current set of blocked signals + according to HOW, which may be SIG_BLOCK, SIG_UNBLOCK or SIG_SETMASK. + If OSET is not NULL, store the old set of blocked signals in *OSET. */ +int +DEFUN(__sigprocmask, (how, set, oset), + int how AND CONST sigset_t *set AND sigset_t *oset) +{ + int mask; + + if (set != NULL) + { + mask = *set; + switch (how) + { + case SIG_BLOCK: + mask = __sigblock(mask); + break; + + case SIG_UNBLOCK: + mask = __sigblock (0) & ~mask; + /* Fall through. */ + + case SIG_SETMASK: + mask = __sigsetmask(mask); + break; + + default: + errno = EINVAL; + return -1; + } + } + else + mask = __sigblock(0); + + if (oset != NULL) + *oset = mask; + + return 0; +} + +weak_alias (__sigprocmask, sigprocmask) -- cgit v1.1