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123 lines
4.2 KiB
123 lines
4.2 KiB
/**************************************************************************** |
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* libc/stdio/lib_syslogstream.c |
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* |
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* Copyright (C) 2012 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 <unistd.h> |
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#include <assert.h> |
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#include <errno.h> |
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#include <nuttx/syslog.h> |
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#include "lib_internal.h" |
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#ifdef CONFIG_SYSLOG |
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/**************************************************************************** |
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* Pre-processor definition |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Name: syslogstream_putc |
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****************************************************************************/ |
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static void syslogstream_putc(FAR struct lib_outstream_s *this, int ch) |
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{ |
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int ret; |
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/* Try writing until the write was successful or until an irrecoverable |
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* error occurs. |
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*/ |
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do |
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{ |
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/* Write the character to the supported logging device. On failure, |
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* syslog_putc returns EOF with the errno value set; |
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*/ |
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ret = syslog_putc(ch); |
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if (ret != EOF) |
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{ |
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this->nput++; |
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return; |
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} |
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/* The special errno value -EINTR means that syslog_putc() was |
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* awakened by a signal. This is not a real error and must be |
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* ignored in this context. |
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*/ |
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} |
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while (errno == -EINTR); |
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} |
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/**************************************************************************** |
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* Public Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Name: lib_syslogstream |
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* |
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* Description: |
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* Initializes a stream for use with the configured syslog interface. |
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* |
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* Input parameters: |
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* lowoutstream - User allocated, uninitialized instance of struct |
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* lib_lowoutstream_s to be initialized. |
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* |
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* Returned Value: |
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* None (User allocated instance initialized). |
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* |
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****************************************************************************/ |
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void lib_syslogstream(FAR struct lib_outstream_s *stream) |
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{ |
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stream->put = syslogstream_putc; |
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#ifdef CONFIG_STDIO_LINEBUFFER |
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stream->flush = lib_noflush; |
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#endif |
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stream->nput = 0; |
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} |
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#endif /* CONFIG_SYSLOG */ |
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