* Copyright (C) 2014 Red Hat, Inc.
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "config.h"
#include "cockpitmemory.h"
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
* cockpit_memory_clear:
*
* The cockpit_memory_clear function overwrites LEN bytes of memory
* pointed to by DATA with non-sensitive values. When LEN is -1, DATA
* must be zero-terminated and all bytes until the zero are
* overwritten.
*
* This is very similar to memset but we take extra measures to
* prevent the compiler from optimizing it away.
*/
void
cockpit_memory_clear (void * data,
ssize_t len)
{
if (len < 0)
len = strlen (data);
explicit_bzero (data, len);
}
static void
abort_errno (const char *msg)
{
perror (msg);
abort ();
}
void *
mallocx (size_t size)
{
void *r = malloc (size);
if (r == NULL)
abort_errno ("failed to allocate memory");
return r;
}
void *
callocx (size_t nmemb, size_t size)
{
void *r = calloc (nmemb, size);
if (r == NULL)
abort_errno ("failed to allocate memory");
return r;
}
char *
strdupx (const char *s)
{
char *r = strdup (s);
if (r == NULL)
abort_errno ("failed to allocate memory for strdup");
return r;
}
char *
strndupx (const char *s,
size_t n)
{
char *r = strndup (s, n);
if (r == NULL)
abort_errno ("failed to allocate memory for strndup");
return r;
}
int
asprintfx (char **strp,
const char *fmt, ...)
{
va_list args;
int r;
va_start (args, fmt);
r = vasprintf (strp, fmt, args);
va_end (args);
if (r < 0)
{
fprintf (stderr, "Cannot allocate memory for asprintf\n");
abort ();
}
return r;
}
void *
reallocx (void *ptr,
size_t size)
{
void *r = realloc (ptr, size);
if (r == NULL)
abort_errno ("failed to allocate memory");
return r;
}
* abort() on ENOMEM */
void *
reallocarrayx (void *ptr,
size_t nmemb,
size_t size)
{
void *r;
if (nmemb >= SIZE_MAX / size)
{
fprintf (stderr, "reallocarr: overflow (nmemb %zu)\n", nmemb);
abort ();
}
r = realloc (ptr, nmemb * size);
if (r == NULL)
abort_errno ("failed to allocate memory for realloc");
return r;
}
