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[/] [or1k/] [trunk/] [linux/] [uClibc/] [libc/] [signal/] [sigintr.c] - Blame information for rev 1765

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1 1325 phoenix
/* Copyright (C) 1992, 1994, 1996 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 not,
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   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 <stddef.h>
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#include <signal.h>
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#include <errno.h>
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/* If INTERRUPT is nonzero, make signal SIG interrupt system calls
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   (causing them to fail with EINTR); if INTERRUPT is zero, make system
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   calls be restarted after signal SIG.  */
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int siginterrupt (int sig, int interrupt)
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{
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#ifdef  SA_RESTART
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    extern sigset_t _sigintr;   /* Defined in signal.c.  */
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    struct sigaction action;
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    if (sigaction (sig, (struct sigaction *) NULL, &action) < 0)
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        return -1;
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    if (interrupt)
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    {
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        __sigaddset (&_sigintr, sig);
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        action.sa_flags &= ~SA_RESTART;
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    }
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    else
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    {
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        __sigdelset (&_sigintr, sig);
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        action.sa_flags |= SA_RESTART;
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    }
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    if (sigaction (sig, &action, (struct sigaction *) NULL) < 0)
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        return -1;
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    return 0;
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#else
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    __set_errno (ENOSYS);
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    return -1;
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#endif
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}

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