119 lines
3.8 KiB
C
119 lines
3.8 KiB
C
/****************************************************************************
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* libs/libc/signal/sig_addset.c
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*
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* Copyright (C) 2007, 2008, 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <signal.h>
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#include <errno.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxsig_addset
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*
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* Description:
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* This function adds the signal specified by signo to the signal set
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* specified by set.
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*
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* Input Parameters:
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* set - Signal set to add signal to
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* signo - Signal to add
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*
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* Returned Value:
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* This is an internal OS interface and should not be used by applications.
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* It follows the NuttX internal error return policy: Zero (OK) is
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* returned on success. A negated errno value is returned on failure.
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*
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* EINVAL - The signo argument is invalid.
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*
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* Assumptions:
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*
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****************************************************************************/
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int nxsig_addset(FAR sigset_t *set, int signo)
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{
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/* Verify the signal */
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if (!GOOD_SIGNO(signo))
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{
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return -EINVAL;
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}
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else
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{
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/* Add the signal to the set */
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*set |= SIGNO2SET(signo);
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return OK;
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}
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}
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/****************************************************************************
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* Name: sigaddset
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*
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* Description:
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* This function adds the signal specified by signo to the signal set
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* specified by set.
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*
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* Input Parameters:
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* set - Signal set to add signal to
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* signo - Signal to add
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*
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* Returned Value:
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* 0 (OK), or -1 (ERROR) if the signal number is invalid.
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*
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* Assumptions:
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*
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****************************************************************************/
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int sigaddset(FAR sigset_t *set, int signo)
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{
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int ret;
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/* Let nxsig_addset do all the work. */
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ret = nxsig_addset(set, signo);
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if (ret < 0)
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{
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set_errno(EINVAL);
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ret = ERROR;
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}
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return ret;
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}
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