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/*
* utils - misc libubox utility functions
*
* Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "utils.h"
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#define foreach_arg(_arg, _addr, _len, _first_addr, _first_len) \
for (_addr = (_first_addr), _len = (_first_len); \
_addr; \
_addr = va_arg(_arg, void **), _len = _addr ? va_arg(_arg, size_t) : 0)
void *__calloc_a(size_t len, ...)
{
va_list ap, ap1;
void *ret;
void **cur_addr;
size_t cur_len;
int alloc_len = 0;
char *ptr;
va_start(ap, len);
va_copy(ap1, ap);
foreach_arg(ap1, cur_addr, cur_len, &ret, len)
alloc_len += cur_len;
va_end(ap1);
ptr = calloc(1, alloc_len);
alloc_len = 0;
foreach_arg(ap, cur_addr, cur_len, &ret, len) {
*cur_addr = &ptr[alloc_len];
alloc_len += cur_len;
}
va_end(ap);
return ret;
}
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