Add generic shared lib loader

2017-09-29 16:15:04 +02:00
parent 30abbdf826
commit 16eb450927
11 changed files with 138 additions and 97 deletions
@@ -0,0 +1,52 @@
+
+/* FT NOKBLF:
+ *  this source is to be linked with the program using the telnet server, it looks for
+ *  the telnet server dynamic library, possibly loads it and calls the telnet server
+ *  init functions
+*/
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <dlfcn.h>
+#include "openair1/PHY/defs.h"
+#define LOAD_MODULE_SHLIB_MAIN
+#include "load_module_shlib.h"
+int load_module_shlib(char *modname)
+{
+   void *lib_handle;
+   initfunc_t fpi;
+   char *tmpstr;
+   int ret=0;
+ 
+   tmpstr = malloc(strlen(modname)+16);
+   if (tmpstr == NULL) {
+      fprintf(stderr,"[LOADER] %s %d malloc error loading module %s, %s\n",__FILE__, __LINE__, modname, strerror(errno));
+      return -1; 
+   }
+   sprintf(tmpstr,"lib%s.so",modname);
+   lib_handle = dlopen(tmpstr, RTLD_LAZY|RTLD_NODELETE|RTLD_GLOBAL);
+   if (!lib_handle) {
+      printf("[LOADER] library %s is not loaded: %s\n", tmpstr,dlerror());
+      ret = -1;
+   } else {
+      sprintf(tmpstr,"init_%s",modname);
+      fpi = dlsym(lib_handle,tmpstr);
+
+      if (fpi != NULL )
+         {
+	 fpi();
+	 }
+      else
+         {
+         fprintf(stderr,"[LOADER] %s %d %s function not found %s\n",__FILE__, __LINE__, dlerror(),tmpstr);
+         ret =  -1;
+         }
+    } 
+	  	 
+   if (tmpstr != NULL) free(tmpstr);
+   if (lib_handle != NULL) dlclose(lib_handle); 
+   return ret;	       
+}