Hi,
I have post in former articls. And now I read the source code of
readfactory.c and ifdwrapper.c and I find that the rv value is strange
in ifdwrapper.c. I am using pcsc-lite-1.2.9-beta6. Can anybody tell me
why?
450 #ifndef PCSCLITE_STATIC_DRIVER
451 if (rContext->dwVersion == IFD_HVERSION_1_0)
452 {
453 ucValue[0] = rContext->dwSlot;
454 IFDSetCapabilities(rContext, TAG_IFD_SLOTNUM,
1, ucValue);
455 rv = (*IFD_is_icc_present) ();
456 }
457 else {
458 rv = (*IFDH_icc_presence) (rContext->dwSlot);
459 DebugLogB("error code of rv1 is %d", rv);
460 }
461 #else
462 if (rContext->dwVersion == IFD_HVERSION_1_0)
463 {
464 ucValue[0] = rContext->dwSlot;
465 IFDSetCapabilities(rContext, TAG_IFD_SLOTNUM,
1, ucValue);
466 rv = IFD_Is_ICC_Present();
467 }
468 else {
469 rv = IFDHICCPresence(rContext->dwSlot);
470 DebugLogB("error code of rv is %d", rv);
471 }
472 #endif
473 DebugLogA("gongying88");
474 SYS_MutexUnLock(rContext->mMutex);
475
476 /*
477 * END OF LOCKED REGION
478 */
479 //DebugLogA("rv is %d", rv);
480 DebugLogA(" kkkg ");
481 if (rv == IFD_SUCCESS || rv == IFD_ICC_PRESENT) {
482 dwCardStatus |= SCARD_PRESENT;
483 DebugLogA(" kkk ");
484 }
485 else {
486 if (rv == IFD_ICC_NOT_PRESENT) {
487 dwCardStatus |= SCARD_ABSENT;
488 DebugLogA(" kkk1 ");
489 }
490 else {
491 DebugLogA(" kkk2 ");
492 DebugLogB("error code %d",
SCARD_E_NOT_TRANSACTED);
493 return SCARD_E_NOT_TRANSACTED;
The output is the following:
ifdwrapper.c:447:IFDStatusICC gongying888
IFDHICCPresence 0
ifdwrapper.c:459:IFDStatusICC error code of rv1 is 612
ifdwrapper.c:473:IFDStatusICC gongying88
ifdwrapper.c:480:IFDStatusICC kkkg
ifdwrapper.c:491:IFDStatusICC kkk2
ifdwrapper.c:492:IFDStatusICC error code -2146435050
eventhandler.c:153:EHSpawnEventHandler gongying7 -2146435050
eventhandler.c:156:EHSpawnEventHandler Initial Check Failed on DT3500
Reader 00 00
readerfactory.c:255:RFAddReader gongying6
IFDHGetCapabilities 0, Tag=0xFAE
Segmentation fault
Why the value of rv is 612 in line 459 but -2146435050 in line 492?
There is not a statement between these two lines which modifies the
value of rv.
Thanks in advanced.
Best regards,
TowerGee
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