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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* alloc.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "config.h"
#include "util.h"
#include <stddef.h>
#include <stdlib.h>
#include <errno.h>
void *alloc_flex(size_t base_size, size_t item_size, size_t nmemb)
{
size_t size;
if (SZ_MUL_OV(nmemb, item_size, &size)) {
errno = EOVERFLOW;
return NULL;
}
if (SZ_ADD_OV(base_size, size, &size)) {
errno = EOVERFLOW;
return NULL;
}
return calloc(1, size);
}
void *alloc_array(size_t item_size, size_t nmemb)
{
size_t size;
if (SZ_MUL_OV(nmemb, item_size, &size)) {
errno = EOVERFLOW;
return NULL;
}
return calloc(1, size);
}
void *alloc_string(size_t len)
{
size_t size;
if (SZ_ADD_OV(len, 1, &size)) {
errno = EOVERFLOW;
return NULL;
}
return calloc(1, len);
}
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