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/* nbdkit
* Copyright Red Hat
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Red Hat nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include "internal.h"
#include "open_memstream.h"
#include "syslog.h"
/* Tempted to use LOG_FTP instead of LOG_DAEMON! */
static const int PRIORITY = LOG_DAEMON|LOG_ERR;
void
log_syslog_verror (int orig_errno, const char *fs, va_list args)
{
const char *name = threadlocal_get_name ();
size_t instance_num = threadlocal_get_instance_num ();
CLEANUP_FREE char *msg = NULL;
size_t len = 0;
FILE *fp = NULL;
fp = open_memstream (&msg, &len);
if (fp == NULL) {
/* Fallback to logging using fs, args directly. */
errno = orig_errno; /* must restore in case fs contains %m */
vsyslog (PRIORITY, fs, args);
return;
}
if (name) {
fprintf (fp, "%s", name);
if (instance_num > 0)
fprintf (fp, "[%zu]", instance_num);
fprintf (fp, ": ");
}
errno = orig_errno; /* must restore in case fs contains %m */
vfprintf (fp, fs, args);
close_memstream (fp);
syslog (PRIORITY, "%s", msg);
}
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