Hello,
I am trying to debug Apple version of pcsc-lite. The code contains calls like:
secdebug("pcscd", "RFCheckSharing: sharing violation, dwLockId:
0x%02X", rContext->dwLockId);
I would like to know _where_ the debug messages are sent?
And how to activate them (if needed)?
What I found for now:
>From
>/usr/local/SecurityPieces/Frameworks/security_utilities.framework/Headers/debugging.h
//
// The debug-log macro is now unconditionally emitted as a DTrace static probe p
oint.
//
#define secdebug(scope, format...) \
if (__builtin_expect(SECURITY_DEBUG_LOG_ENABLED(), 0)) { \
char __msg[500]; snprintf(__msg, sizeof(__msg), ##
format); \ volatile char c __attribute__((unused)) =
scope[0]; \
SECURITY_DEBUG_LOG((char *)(scope), (__msg)); \
} else /* nothing */
#define secdebugf(scope, __msg) SECURITY_DEBUG_LOG((char *)(scope), (__msg))
>From
>/usr/local/SecurityPieces/Frameworks/security_utilities.framework/Headers/utilities_dtrace.h
#define SECURITY_DEBUG_LOG(arg0, arg1) \do { \
__asm__ volatile(".reference " SECURITY_DEBUG_TYPEDEFS); \
__dtrace_probe$security_debug$log$v1$63686172202a$63686172202a(arg0, arg
1); \
__asm__ volatile(".reference " SECURITY_DEBUG_STABILITY); \
} while (0)
#define SECURITY_DEBUG_LOG_ENABLED() \
__dtrace_isenabled$security_debug$log$v1()
It looks like it is related to DTrace. And I am a very beginner at DTrace.
So any help is welcome.
Thanks
--
Dr. Ludovic Rousseau
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