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/*
* critmem.c -- memory allocation that only returns on success
*
* (C) 2000 - 2002 by Matthias Andree <matthias.andree@gmx.de>
* Backport of critstrdup courtesy of Ralf Wildenhues <ralf.wildenhues@gmx.de>
*
* ---------------------------------------------------------------------------
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2 or 2.1 of
* the License. See the file COPYING.LGPL for details.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include "critmem.h"
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>
#include <string.h>
static char ebuf[1024]; /* error buffer */
static int log_syslog = 1; /* log to syslog? */
static void barf(const char *func, size_t size, const char *message) {
snprintf(ebuf, sizeof(ebuf), "%s(%ld) failed: %s", func, (long)size, message);
if (log_syslog)
syslog(LOG_ERR, "%s", ebuf);
fwrite(ebuf, strlen(ebuf), 1, stderr);
fwrite("\n", 1, 1, stderr);
exit(EXIT_FAILURE);
}
/*
* replacement for malloc, syslogs allocation failures
* and exits with the error message
*/
char *
critmalloc(size_t size, const char *message)
{
char *a;
a = (char *)malloc(size);
/* we don't want to return NULL, not even for size == 0 */
if (!a && size == 0)
a = (char *)malloc(1);
if (!a)
barf("malloc", size, message);
return a;
}
/*
* replacement for realloc, syslogs allocation failures
* and exits with the error message
*/
char *
critrealloc(char *a, size_t size, const char *message)
{
char *b = (char *)realloc(a, size);
if (!b && size != 0)
barf("realloc", size, message);
return b;
}
/*
* replacement for malloc, logs allocation failures
* and exits with the error message
*/
char *
critstrdup(const char *source, const char *message)
{
char *a;
a = (char *)critmalloc(strlen(source) + 1, message);
strcpy(a, source); /* RATS: ignore */
return a;
}
void critsyslog(int do_log) {
log_syslog = do_log;
}
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