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Add information gathered through getauxval()

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Suggested by Wladimir van der Laan.
This commit is contained in:
Pieter Wuille 2019-10-27 12:36:05 -07:00
parent 11793ea22e
commit 483b94292e
1 changed files with 25 additions and 0 deletions
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25
src/randomenv.cpp
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@ -57,6 +57,9 @@
#include <sys/vmmeter.h> #include <sys/vmmeter.h>
#endif #endif
#endif #endif
#ifdef __linux__
#include <sys/auxv.h>
#endif
//! Necessary on some platforms //! Necessary on some platforms
extern char** environ; extern char** environ;
@ -329,6 +332,28 @@ void RandAddStaticEnv(CSHA512& hasher)
// Bitcoin client version // Bitcoin client version
hasher << CLIENT_VERSION; hasher << CLIENT_VERSION;
#ifdef __linux__
// Information available through getauxval()
# ifdef AT_HWCAP
hasher << getauxval(AT_HWCAP);
# endif
# ifdef AT_HWCAP2
hasher << getauxval(AT_HWCAP2);
# endif
# ifdef AT_RANDOM
const unsigned char* random_aux = (const unsigned char*)getauxval(AT_RANDOM);
if (random_aux) hasher.Write(random_aux, 16);
# endif
# ifdef AT_PLATFORM
const char* platform_str = (const char*)getauxval(AT_PLATFORM);
if (platform_str) hasher.Write((const unsigned char*)platform_str, strlen(platform_str) + 1);
# endif
# ifdef AT_EXECFN
const char* exec_str = (const char*)getauxval(AT_EXECFN);
if (exec_str) hasher.Write((const unsigned char*)exec_str, strlen(exec_str) + 1);
# endif
#endif // __linux__
#ifdef HAVE_GETCPUID #ifdef HAVE_GETCPUID
AddAllCPUID(hasher); AddAllCPUID(hasher);
#endif #endif