Kannel: Open Source WAP and SMS gateway  svn-r5335
gw-dlopen.c
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56 
57 /*
58  * gw-dlopen.c - implement lookup for addresses in the shared libs or the same binary
59  *
60  *
61  * Alexander Malysh 2018 for Project Kannel
62  */
63 
64 #include "gw-config.h"
65 #include "gwlib.h"
66 
67 #include <dlfcn.h>
68 
69 
70 int gw_dlopen_get_symbol(const char *lib_path, const char *name, void **result)
71 {
72  void *dl_handle, *addr;
73  const char* err;
74 
75  *result = NULL;
76 
77  dl_handle = dlopen(lib_path, RTLD_NOW | RTLD_LOCAL);
78  err = dlerror();
79  if (NULL != err) {
80  error(0, "error opening shared library `%s': %s", (lib_path == NULL ? "" : lib_path), err);
81  return -1;
82  }
83 
84  debug("gw_dlopen", 0, "shared library `%s' opened", (lib_path == NULL ? "" : lib_path));
85 
86  addr = dlsym(dl_handle, name);
87  if (addr == NULL) {
88  error(0, "error find name in shared library `%s': %s", (lib_path == NULL ? "" : lib_path), dlerror());
89  dlclose(dl_handle);
90  return -1;
91  }
92  dlclose(dl_handle);
93 
94  *result = addr;
95 
96  return 0;
97 }
void error(int err, const char *fmt,...)
Definition: log.c:648
int gw_dlopen_get_symbol(const char *lib_path, const char *name, void **result)
Definition: gw-dlopen.c:70
char * name
Definition: smsc_cimd2.c:212
void debug(const char *place, int err, const char *fmt,...)
Definition: log.c:726
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