dyn_unix.c

Go to the documentation of this file.
00001 /*
00002  * MUSCLE SmartCard Development ( http://www.linuxnet.com )
00003  *
00004  * Copyright (C) 1999
00005  *  David Corcoran <corcoran@linuxnet.com>
00006  * Copyright (C) 2004
00007  *  Ludovic Rousseau <ludovic.rousseau@free.fr>
00008  *
00009  * $Id: dyn_unix.c 3247 2009-01-02 13:22:46Z rousseau $
00010  */
00011 
00017 #include "config.h"
00018 #include <stdio.h>
00019 #include <string.h>
00020 #if defined(HAVE_DLFCN_H) && !defined(HAVE_DL_H) && !defined(__APPLE__)
00021 #include <dlfcn.h>
00022 #include <stdlib.h>
00023 
00024 #include "misc.h"
00025 #include "pcsclite.h"
00026 #include "debug.h"
00027 #include "dyn_generic.h"
00028 
00029 INTERNAL int DYN_LoadLibrary(void **pvLHandle, char *pcLibrary)
00030 {
00031     *pvLHandle = NULL;
00032     *pvLHandle = dlopen(pcLibrary, RTLD_LAZY);
00033 
00034     if (*pvLHandle == NULL)
00035     {
00036         Log3(PCSC_LOG_CRITICAL, "%s: %s", pcLibrary, dlerror());
00037         return SCARD_F_UNKNOWN_ERROR;
00038     }
00039 
00040     return SCARD_S_SUCCESS;
00041 }
00042 
00043 INTERNAL int DYN_CloseLibrary(void **pvLHandle)
00044 {
00045     int ret;
00046 
00047     ret = dlclose(*pvLHandle);
00048     *pvLHandle = NULL;
00049 
00050     if (ret)
00051     {
00052         Log2(PCSC_LOG_CRITICAL, "%s", dlerror());
00053         return SCARD_F_UNKNOWN_ERROR;
00054     }
00055 
00056     return SCARD_S_SUCCESS;
00057 }
00058 
00059 INTERNAL int DYN_GetAddress(void *pvLHandle, void **pvFHandle, const char *pcFunction)
00060 {
00061     char pcFunctionName[256];
00062     int rv;
00063 
00064     /* Some platforms might need a leading underscore for the symbol */
00065     (void)snprintf(pcFunctionName, sizeof(pcFunctionName), "_%s", pcFunction);
00066 
00067     *pvFHandle = NULL;
00068     *pvFHandle = dlsym(pvLHandle, pcFunctionName);
00069 
00070     /* Failed? Try again without the leading underscore */
00071     if (*pvFHandle == NULL)
00072         *pvFHandle = dlsym(pvLHandle, pcFunction);
00073 
00074     if (*pvFHandle == NULL)
00075     {
00076         Log3(PCSC_LOG_CRITICAL, "%s: %s", pcFunction, dlerror());
00077         rv = SCARD_F_UNKNOWN_ERROR;
00078     } else
00079         rv = SCARD_S_SUCCESS;
00080 
00081     return rv;
00082 }
00083 
00084 #endif  /* HAVE_DLFCN_H && !HAVE_DL_H && !__APPLE__ */

Generated on Mon Aug 17 01:00:08 2009 for pcsc-lite by  doxygen 1.5.9