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1999-01-20 Ulrich Drepper <drepper@cygnus.com> * elf/Makefile (tests): Add preloadtest. Add rules to build more test modules and the preloadtest binary. * elf/loadtest.c (TEST_ROUNDS): Increase to 1000. (testobjs): Add more modules. (tests): Add entries for new modules. * elf/preloadtest.c: New file. Test for LD_PRELOAD. * elf/testobj1.c: Add 'preload' function. * elf/testobj2.c: Likewise. * elf/testobj3.c: Likewise. * elf/testobj4.c: New file. * elf/testobj5.c: New file. * elf/testobj6.c: New file.
130 lines
3.0 KiB
C
130 lines
3.0 KiB
C
#include <assert.h>
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#include <dlfcn.h>
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#include <errno.h>
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#include <error.h>
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#include <stdio.h>
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#include <stdlib.h>
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/* How many load/unload operations do we do. */
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#define TEST_ROUNDS 1000
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static struct
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{
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/* Name of the module. */
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const char *name;
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/* The handle. */
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void *handle;
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} testobjs[] =
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{
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{ "testobj1.so", NULL },
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{ "testobj2.so", NULL },
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{ "testobj3.so", NULL },
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{ "testobj4.so", NULL },
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{ "testobj5.so", NULL },
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{ "testobj6.so", NULL },
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};
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#define NOBJS (sizeof (testobjs) / sizeof (testobjs[0]))
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static const struct
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{
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/* Name of a function to call. */
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const char *fname;
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/* Index in status and handle array. */
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int index;
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/* Options while loading the module. */
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int options;
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} tests[] =
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{
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{ "obj1func2", 0, RTLD_LAZY },
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{ "obj1func1", 0, RTLD_LAZY | RTLD_GLOBAL },
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{ "obj1func1", 0, RTLD_NOW, },
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{ "obj1func2", 0, RTLD_NOW | RTLD_GLOBAL },
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{ "obj2func2", 1, RTLD_LAZY },
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{ "obj2func1", 1, RTLD_LAZY | RTLD_GLOBAL, },
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{ "obj2func1", 1, RTLD_NOW, },
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{ "obj2func2", 1, RTLD_NOW | RTLD_GLOBAL },
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{ "obj3func2", 2, RTLD_LAZY },
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{ "obj3func1", 2, RTLD_LAZY | RTLD_GLOBAL },
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{ "obj3func1", 2, RTLD_NOW },
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{ "obj3func2", 2, RTLD_NOW | RTLD_GLOBAL },
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{ "obj4func2", 3, RTLD_LAZY },
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{ "obj4func1", 3, RTLD_LAZY | RTLD_GLOBAL },
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{ "obj4func1", 3, RTLD_NOW },
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{ "obj4func2", 3, RTLD_NOW | RTLD_GLOBAL },
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{ "obj5func2", 4, RTLD_LAZY },
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{ "obj5func1", 4, RTLD_LAZY | RTLD_GLOBAL },
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{ "obj5func1", 4, RTLD_NOW },
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{ "obj5func2", 4, RTLD_NOW | RTLD_GLOBAL },
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{ "obj6func2", 5, RTLD_LAZY },
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{ "obj6func1", 5, RTLD_LAZY | RTLD_GLOBAL },
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{ "obj6func1", 5, RTLD_NOW },
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{ "obj6func2", 5, RTLD_NOW | RTLD_GLOBAL },
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};
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#define NTESTS (sizeof (tests) / sizeof (tests[0]))
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int
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main (void)
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{
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int count = TEST_ROUNDS;
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/* Just a seed. */
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srandom (TEST_ROUNDS);
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while (count--)
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{
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int nr = random () % NTESTS;
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int index = tests[nr].index;
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printf ("%4d: %4d: ", count + 1, nr);
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fflush (stdout);
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if (testobjs[index].handle == NULL)
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{
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int (*fct) (int);
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/* Load the object. */
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testobjs[index].handle = dlopen (testobjs[index].name,
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tests[nr].options);
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if (testobjs[index].handle == NULL)
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error (EXIT_FAILURE, 0, "cannot load `%s': %s",
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testobjs[index].name, dlerror ());
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/* Test the function call. */
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fct = dlsym (testobjs[index].handle, tests[nr].fname);
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if (fct == NULL)
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error (EXIT_FAILURE, 0,
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"cannot get function `%s' from shared object `%s': %s",
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tests[nr].fname, testobjs[index].name, dlerror ());
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fct (10);
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printf ("successfully loaded `%s'\n", testobjs[index].name);
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}
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else
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{
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dlclose (testobjs[index].handle);
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testobjs[index].handle = NULL;
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printf ("successfully unloaded `%s'\n", testobjs[index].name);
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}
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}
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/* Unload all loaded modules. */
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for (count = 0; count < NOBJS; ++count)
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if (testobjs[count].handle != NULL)
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dlclose (testobjs[count].handle);
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return 0;
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}
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int
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foo (int a)
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{
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return a - 1;
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}
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