Mercurial > dropbear
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_ */