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/* xalloc.c - Failsafe memory allocation functions.
* Taken from excellent glibc.info ;)
*
* Copyright (C) 2010, Pawel Krawczyk <pawel.krawczyk@hush.com> and
* Jeroen Nijhof <jeroen@jeroennijhof.nl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program - see the file COPYING.
*
* See `CHANGES' file for revision history.
*/
#include "xalloc.h"
void *xcalloc(size_t nmemb, size_t size) {
void *val = calloc(nmemb, size);
if (val == 0) {
TACSYSLOG(
LOG_ERR, "%s: calloc(%u,%u) failed", __FUNCTION__, (unsigned) nmemb, (unsigned) size);
exit(1);
}
return val;
}
void *xrealloc(void *ptr, size_t size) {
void *val = realloc(ptr, size);
if (val == 0) {
TACSYSLOG(
LOG_ERR, "%s: realloc(%u) failed", __FUNCTION__, (unsigned) size);
exit(1);
}
return val;
}
char *xstrdup(const char *s) {
char *p;
if (s == NULL)
return NULL;
if ((p = strdup(s)) == NULL) {
TACSYSLOG(LOG_ERR, "%s: strdup(%s) failed: %m", __FUNCTION__, s);
exit(1);
}
return p;
}
/*
safe string copy that aborts when destination buffer is too small
*/
char *xstrcpy(char *dst, const char *src, size_t dst_size) {
if (dst == NULL) {
TACSYSLOG(LOG_ERR, "xstrcpy(): dst == NULL");
abort();
}
if (src == NULL) {
TACSYSLOG(LOG_ERR, "xstrcpy(): src == NULL");
abort();
}
if (!dst_size)
return NULL;
if (strlen(src) >= dst_size) {
TACSYSLOG(LOG_ERR, "xstrcpy(): argument too long, aborting");
abort();
}
return strcpy(dst, src);
}
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