119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
#include <dlfcn.h>
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#include <libintl.h>
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#include <link.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define MAPS ((struct link_map *) _r_debug.r_map)
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static int
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check_loaded_objects (const char **loaded)
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{
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struct link_map *lm;
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int n;
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int *found = NULL;
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int errors = 0;
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for (n = 0; loaded[n]; n++)
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/* NOTHING */;
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if (n)
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{
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found = (int *) alloca (sizeof (int) * n);
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memset (found, 0, sizeof (int) * n);
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}
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printf(" Name\n");
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printf(" --------------------------------------------------------\n");
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for (lm = MAPS; lm; lm = lm->l_next)
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{
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if (lm->l_name && lm->l_name[0])
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printf(" %s, count = %d\n", lm->l_name, (int) lm->l_direct_opencount);
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if (lm->l_type == lt_loaded && lm->l_name)
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{
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int match = 0;
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for (n = 0; loaded[n] != NULL; n++)
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{
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if (strcmp (basename (loaded[n]), basename (lm->l_name)) == 0)
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{
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found[n] = 1;
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match = 1;
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break;
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}
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}
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if (match == 0)
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{
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++errors;
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printf ("ERRORS: %s is not unloaded\n", lm->l_name);
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}
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}
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}
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for (n = 0; loaded[n] != NULL; n++)
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{
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if (found[n] == 0)
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{
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++errors;
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printf ("ERRORS: %s is not loaded\n", loaded[n]);
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}
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}
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return errors;
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}
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int
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main (void)
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{
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void *obj2;
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void *obj3[2];
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const char *loaded[] = { NULL, NULL, NULL, NULL };
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int errors = 0;
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printf ("\nThis is what is in memory now:\n");
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errors += check_loaded_objects (loaded);
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printf ("\nLoading shared object neededobj2.so\n");
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obj2 = dlopen ("neededobj2.so", RTLD_LAZY);
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if (obj2 == NULL)
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{
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printf ("%s\n", dlerror ());
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exit (1);
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}
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loaded[0] = "neededobj1.so";
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loaded[1] = "neededobj2.so";
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errors += check_loaded_objects (loaded);
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printf ("\nLoading shared object neededobj3.so\n");
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obj3[0] = dlopen( "neededobj3.so", RTLD_LAZY);
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if (obj3[0] == NULL)
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{
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printf ("%s\n", dlerror ());
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exit (1);
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}
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loaded[2] = "neededobj3.so";
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errors += check_loaded_objects (loaded);
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printf ("\nNow loading shared object neededobj3.so again\n");
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obj3[1] = dlopen ("neededobj3.so", RTLD_LAZY);
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if (obj3[1] == NULL)
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{
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printf ("%s\n", dlerror ());
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exit (1);
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}
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errors += check_loaded_objects (loaded);
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printf ("\nClosing neededobj3.so once\n");
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dlclose (obj3[0]);
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errors += check_loaded_objects (loaded);
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printf ("\nClosing neededobj2.so\n");
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dlclose (obj2);
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errors += check_loaded_objects (loaded);
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printf ("\nClosing neededobj3.so for the second time\n");
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dlclose (obj3[1]);
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loaded[0] = NULL;
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loaded[1] = NULL;
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loaded[2] = NULL;
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errors += check_loaded_objects (loaded);
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if (errors != 0)
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printf ("%d errors found\n", errors);
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return errors;
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}
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