view dbmalloc.h @ 1861:2b3a8026a6ce

Add re-exec for server This allows ASLR to re-randomize the address space for every connection, preventing some vulnerabilities from being exploitable by repeated probing. Overhead (memory and time) is yet to be confirmed. At present this is only enabled on Linux. Other BSD platforms with fexecve() would probably also work though have not been tested.
author Matt Johnston <matt@ucc.asn.au>
date Sun, 30 Jan 2022 10:14:56 +0800
parents 8dc43b30c6bf
children
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#ifndef DBMALLOC_H_
#define DBMALLOC_H_

#include "options.h"
#include <stdint.h>
#include <stdlib.h>

void * m_malloc(size_t size);
void * m_calloc(size_t nmemb, size_t size);
void * m_strdup(const char * str);
void * m_realloc(void* ptr, size_t size);

#if DROPBEAR_TRACKING_MALLOC
void m_free_direct(void* ptr);
void m_malloc_set_epoch(unsigned int epoch);
void m_malloc_free_epoch(unsigned int epoch, int dofree);

#else
/* plain wrapper */
#define m_free_direct free

#endif

#define m_free(X) do {m_free_direct(X); (X) = NULL;} while (0)


#endif /* DBMALLOC_H_ */