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/*
* netsniff-ng - the packet sniffing beast
* Copyright 2009, 2010, 2011, 2012 Daniel Borkmann.
* Subject to the GPL, version 2.
*/
#define _GNU_SOURCE
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <limits.h>
#include <sys/types.h>
#include "xmalloc.h"
#include "built_in.h"
#include "die.h"
#include "str.h"
void *xmalloc(size_t size)
{
void *ptr;
if (unlikely(size == 0))
panic("xmalloc: zero size\n");
ptr = malloc(size);
if (unlikely(ptr == NULL))
panic("xmalloc: out of memory (allocating %zu bytes)\n",
size);
return ptr;
}
void *xcalloc(size_t nmemb, size_t size)
{
void *ptr;
if (unlikely(nmemb == 0 || size == 0))
panic("xcalloc: zero size\n");
ptr = calloc(nmemb, size);
if (unlikely(ptr == NULL))
panic("xcalloc: out of memory (allocating %zu members of "
"%zu bytes)\n", nmemb, size);
return ptr;
}
void *xzmalloc(size_t size)
{
void *ptr = xmalloc(size);
memset(ptr, 0, size);
return ptr;
}
void *xmalloc_aligned(size_t size, size_t alignment)
{
int ret;
void *ptr;
if (unlikely(size == 0))
panic("xmalloc_aligned: zero size\n");
ret = posix_memalign(&ptr, alignment, size);
if (unlikely(ret != 0))
panic("xmalloc_aligned: out of memory (allocating %zu "
"bytes)\n", size);
return ptr;
}
void *xzmalloc_aligned(size_t size, size_t alignment)
{
void *ptr = xmalloc_aligned(size, alignment);
memset(ptr, 0, size);
return ptr;
}
void *xmallocz(size_t size)
{
void *ptr;
if (unlikely(size + 1 < size))
panic("xmallocz: data too large to fit into virtual "
"memory space\n");
ptr = xmalloc(size + 1);
((char*) ptr)[size] = 0;
return ptr;
}
void *xmemdupz(const void *data, size_t len)
{
return memcpy(xmallocz(len), data, len);
}
void *xrealloc(void *ptr, size_t nmemb, size_t size)
{
void *new_ptr;
size_t new_size = nmemb * size;
if (unlikely(new_size == 0))
panic("xrealloc: zero size\n");
if (unlikely(((size_t) ~0) / nmemb < size))
panic("xrealloc: nmemb * size > SIZE_T_MAX\n");
if (ptr == NULL)
new_ptr = malloc(new_size);
else
new_ptr = realloc(ptr, new_size);
if (unlikely(new_ptr == NULL))
panic("xrealloc: out of memory (new_size %zu bytes)\n",
new_size);
return new_ptr;
}
void xfree_func(void *ptr)
{
if (unlikely(ptr == NULL))
panic("xfree: NULL pointer given as argument\n");
free(ptr);
}
char *xstrdup(const char *str)
{
size_t len;
char *cp;
len = strlen(str) + 1;
cp = xmalloc(len);
strlcpy(cp, str, len);
return cp;
}
char *xstrndup(const char *str, size_t size)
{
size_t len;
char *cp;
len = strlen(str) + 1;
if (size < len)
len = size;
cp = xmalloc(len);
strlcpy(cp, str, len);
return cp;
}
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