Mercurial > dropbear
annotate 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> |
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date | Sun, 30 Jan 2022 10:14:56 +0800 |
parents | 8dc43b30c6bf |
children |
rev | line source |
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1361 | 1 #ifndef DBMALLOC_H_ |
2 #define DBMALLOC_H_ | |
3 | |
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Attempt to fix m_free for libtomcrypt/libtommath
Matt Johnston <matt@ucc.asn.au>
parents:
1569
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4 #include "options.h" |
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Define _GNU_SOURCE properly, other header fixes
Matt Johnston <matt@ucc.asn.au>
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5 #include <stdint.h> |
8dc43b30c6bf
Define _GNU_SOURCE properly, other header fixes
Matt Johnston <matt@ucc.asn.au>
parents:
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6 #include <stdlib.h> |
1361 | 7 |
8 void * m_malloc(size_t size); | |
9 void * m_calloc(size_t nmemb, size_t size); | |
10 void * m_strdup(const char * str); | |
11 void * m_realloc(void* ptr, size_t size); | |
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Only use malloc wrapper if fuzzing
Matt Johnston <matt@ucc.asn.au>
parents:
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12 |
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Only use malloc wrapper if fuzzing
Matt Johnston <matt@ucc.asn.au>
parents:
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13 #if DROPBEAR_TRACKING_MALLOC |
1361 | 14 void m_free_direct(void* ptr); |
15 void m_malloc_set_epoch(unsigned int epoch); | |
1378 | 16 void m_malloc_free_epoch(unsigned int epoch, int dofree); |
1361 | 17 |
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Only use malloc wrapper if fuzzing
Matt Johnston <matt@ucc.asn.au>
parents:
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18 #else |
c42e8ff42bd1
Only use malloc wrapper if fuzzing
Matt Johnston <matt@ucc.asn.au>
parents:
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diff
changeset
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19 /* plain wrapper */ |
1571
d4efb7801fcd
Attempt to fix m_free for libtomcrypt/libtommath
Matt Johnston <matt@ucc.asn.au>
parents:
1569
diff
changeset
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20 #define m_free_direct free |
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c42e8ff42bd1
Only use malloc wrapper if fuzzing
Matt Johnston <matt@ucc.asn.au>
parents:
1378
diff
changeset
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21 |
c42e8ff42bd1
Only use malloc wrapper if fuzzing
Matt Johnston <matt@ucc.asn.au>
parents:
1378
diff
changeset
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22 #endif |
c42e8ff42bd1
Only use malloc wrapper if fuzzing
Matt Johnston <matt@ucc.asn.au>
parents:
1378
diff
changeset
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23 |
1571
d4efb7801fcd
Attempt to fix m_free for libtomcrypt/libtommath
Matt Johnston <matt@ucc.asn.au>
parents:
1569
diff
changeset
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24 #define m_free(X) do {m_free_direct(X); (X) = NULL;} while (0) |
d4efb7801fcd
Attempt to fix m_free for libtomcrypt/libtommath
Matt Johnston <matt@ucc.asn.au>
parents:
1569
diff
changeset
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25 |
1569
c42e8ff42bd1
Only use malloc wrapper if fuzzing
Matt Johnston <matt@ucc.asn.au>
parents:
1378
diff
changeset
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26 |
1361 | 27 #endif /* DBMALLOC_H_ */ |