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2002-07-01 H.J. Lu <hjl@gnu.org> * elf/circleload1.c (load_dso): Call "circlemod1" and check return value. * elf/circlemod1.c (circlemod1): Return int. * elf/circlemod2.c (circlemod2): Likewise. * elf/circlemod2a.c (circlemod2): Likewise. * elf/circlemod3.c (circlemod3): Likewise. (circlemod3a): A new function.
165 lines
3.4 KiB
C
165 lines
3.4 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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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 = _r_debug.r_map; 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_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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static int
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load_dso (const char **loading, int undef, int flag)
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{
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void *obj;
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const char *loaded[] = { NULL, NULL, NULL, NULL };
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int errors = 0;
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const char *errstring;
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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 ("Loading shared object %s: %s\n", loading [0],
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flag == RTLD_LAZY ? "RTLD_LAZY" : "RTLD_NOW");
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obj = dlopen (loading [0], flag);
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if (obj == NULL)
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{
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if (flag == RTLD_LAZY)
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{
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++errors;
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printf ("ERRORS: dlopen shouldn't fail for RTLD_LAZY\n");
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}
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errstring = dlerror ();
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if (strstr (errstring, "undefined symbol") == 0
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|| strstr (errstring, "circlemod2_undefined") == 0)
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{
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++errors;
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printf ("ERRORS: dlopen: `%s': Invalid error string\n",
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errstring);
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}
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else
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printf ("dlopen: %s\n", errstring);
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}
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else
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{
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if (undef && flag == RTLD_NOW)
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{
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++errors;
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printf ("ERRORS: dlopen shouldn't work for RTLD_NOW\n");
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}
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if (!undef)
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{
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int (*func) (void);
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func = dlsym (obj, "circlemod1");
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if (func == NULL)
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{
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++errors;
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printf ("ERRORS: cannot get address of \"circlemod1\": %s\n",
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dlerror ());
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}
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else if (func () != 3)
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{
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++errors;
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printf ("ERRORS: function \"circlemod1\" returned wrong result\n");
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}
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}
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loaded[0] = loading [0];
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loaded[1] = loading [1];
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loaded[2] = loading [2];
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}
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errors += check_loaded_objects (loaded);
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if (obj)
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{
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printf ("UnLoading shared object %s\n", loading [0]);
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dlclose (obj);
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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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}
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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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int errors = 0;
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const char *loading[3];
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loading [0] = "circlemod1a.so";
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loading [1] = "circlemod2a.so";
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loading [2] = "circlemod3a.so";
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errors += load_dso (loading, 0, RTLD_LAZY);
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errors += load_dso (loading, 0, RTLD_NOW);
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loading [0] = "circlemod1.so";
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loading [1] = "circlemod2.so";
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loading [2] = "circlemod3.so";
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errors += load_dso (loading, 1, RTLD_LAZY);
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errors += load_dso (loading, 1, RTLD_NOW);
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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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