125 lines
4.4 KiB
C
125 lines
4.4 KiB
C
/****************************************************************************
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* libs/libc/signal/sig_psignal.c
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*
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* Copyright (C) 2018 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 <nuttx/config.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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/* Uses streams... not available to kernel code */
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#ifndef __KERNEL__
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: psignal
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*
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* Description:
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* The psignal() functions will write a language-dependent message
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* associated with a signal number to the standard error stream as
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* follows:
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*
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* First, if message is not a null pointer and is not the empty string,
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* the string pointed to by the message argument will be written,
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* followed by a colon and a space.
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*
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* Then the signal description string associated with signum will be
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* written, followed by a newline.
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*
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* Returned Value
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* None. The errno value is never set in this implementation.
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*
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****************************************************************************/
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void psignal(int signum, FAR const char *message)
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{
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/* For now, just a brainless write to stderr (fd == 2). C buffered I/O is
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* used!
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*/
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if (message != NULL)
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{
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(void)fprintf(stderr, "%s: %s\n", message, strsignal(signum));
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}
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else
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{
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(void)fprintf(stderr, "%s\n", strsignal(signum));
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}
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}
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/****************************************************************************
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* Name: psiginfo
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*
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* Description:
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* The psiginfo() functions will write a language-dependent message
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* associated with a signal number to the standard error stream as
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* follows:
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*
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* First, if message is not a null pointer and is not the empty string,
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* the string pointed to by the message argument will be written,
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* followed by a colon and a space.
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*
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* Then the signal description string associated with the signal
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* indicated by pinfo will be written, followed by a newline.
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*
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* Returned Value
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* None. Since no value is returned, an application wishing to check for
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* error situations should set errno to 0, then call psiginfo() then check
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* errno.
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*
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****************************************************************************/
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void psiginfo(FAR const siginfo_t *pinfo, FAR const char *message)
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{
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if (pinfo == NULL)
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{
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set_errno(EINVAL);
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}
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else
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{
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psignal(pinfo->si_signo, message);
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}
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}
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#endif /* !__KERNEL__ */
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