kopia lustrzana https://gitlab.com/sane-project/backends
49 wiersze
1.3 KiB
C
49 wiersze
1.3 KiB
C
/* Copyright (C) 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "../include/sane/config.h"
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#include <errno.h>
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#ifndef HAVE_SIGPROCMASK
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#define sigprocmask SOMETHINGELSE
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#include <signal.h>
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#undef sigprocmask
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int
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sigprocmask (int how, int *new, int *old)
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{
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int o, n = *new;
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switch (how)
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{
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case 1: o = sigblock (n); break;
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case 2: o = sigsetmask (sigblock (0) & ~n); break;
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case 3: o = sigsetmask (n); break;
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default:
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errno = EINVAL;
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return -1;
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}
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if (old)
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*old = o;
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return 0;
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}
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#endif /* !HAVE_SIGPROCMASK */
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