glibc/dlfcn/tststatic2.c
Ulrich Drepper 5f21997b9d Update.
2004-10-18  Jakub Jelinek  <jakub@redhat.com>

	* elf/dl-libc.c (__libc_dlsym_private, __libc_register_dl_open_hook):
	New functions.
	(__libc_dlopen_mode): Call __libc_register_dl_open_hook and
	__libc_register_dlfcn_hook.
	* dlfcn/Makefile (routines, elide-routines.os): Set.
	Add rules to build and test tststatic2.
	* dlfcn/tststatic2.c: New test.
	* dlfcn/modstatic2.c: New test module.
	* dlfcn/dladdr.c: Call _dlfcn_hook from libdl.so if not NULL.
	Define __ prefixed routine in libc.a and in libdl.a just call it.
	* dlfcn/dladdr1.c: Likewise.
	* dlfcn/dlclose.c: Likewise.
	* dlfcn/dlerror.c: Likewise.
	* dlfcn/dlinfo.c: Likewise.
	* dlfcn/dlmopen.c: Likewise.
	* dlfcn/dlopen.c: Likewise.
	* dlfcn/dlopenold.c: Likewise.
	* dlfcn/dlsym.c: Likewise.
	* dlfcn/dlvsym.c: Likewise.
	* dlfcn/sdladdr.c: New file.
	* dlfcn/sdladdr1.c: New file.
	* dlfcn/sdlclose.c: New file.
	* dlfcn/sdlerror.c: New file.
	* dlfcn/sdlinfo.c: New file.
	* dlfcn/sdlopen.c: New file.
	* dlfcn/sdlsym.c: New file.
	* dlfcn/sdlvsym.c: New file.
	* dlfcn/Versions (libdl): Export _dlfcn_hook@GLIBC_PRIVATE.
	* include/dlfcn.h (DL_CALLER_DECL, DL_CALLER RETURN_ADDRESS): Define.
	(struct dlfcn_hook): New type.
	(_dlfcn_hook): New extern decl.
	(__dlopen, __dlclose, __dlsym, __dlerror, __dladdr, __dladdr1,
	__dlinfo, __dlmopen, __libc_dlsym_private,
	__libc_register_dl_open_hook, __libc_register_dlfcn_hook): New
	prototypes.
	(__dlvsym): Use DL_CALLER_DECL.
	* include/libc-symbols.h: Define libdl_hidden_proto and friends.

	* malloc/arena.c (_dl_open_hook): Extern decl.
	(ptmalloc_init): Don't call _dl_addr when dlopened from statically
	linked programs but don't use brk for them either.
2004-10-18 23:17:46 +00:00

167 lines
3.4 KiB
C

#include <dlfcn.h>
#include <link.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gnu/lib-names.h>
int
main (void)
{
void *handle = dlopen ("modstatic2-nonexistent.so", RTLD_LAZY);
if (handle == NULL)
printf ("nonexistent: %s\n", dlerror ());
else
exit (1);
handle = dlopen ("modstatic2.so", RTLD_LAZY);
if (handle == NULL)
{
printf ("%s\n", dlerror ());
exit (1);
}
int (*test) (FILE *, int);
test = dlsym (handle, "test");
if (test == NULL)
{
printf ("%s\n", dlerror ());
exit (1);
}
Dl_info info;
int res = dladdr (test, &info);
if (res == 0)
{
puts ("dladdr returned 0");
exit (1);
}
else
{
if (strstr (info.dli_fname, "modstatic2.so") == NULL
|| strcmp (info.dli_sname, "test") != 0)
{
printf ("fname %s sname %s\n", info.dli_fname, info.dli_sname);
exit (1);
}
if (info.dli_saddr != (void *) test)
{
printf ("saddr %p != test %p\n", info.dli_saddr, test);
exit (1);
}
}
ElfW(Sym) *sym;
void *symp;
res = dladdr1 (test, &info, &symp, RTLD_DL_SYMENT);
if (res == 0)
{
puts ("dladdr1 returned 0");
exit (1);
}
else
{
if (strstr (info.dli_fname, "modstatic2.so") == NULL
|| strcmp (info.dli_sname, "test") != 0)
{
printf ("fname %s sname %s\n", info.dli_fname, info.dli_sname);
exit (1);
}
if (info.dli_saddr != (void *) test)
{
printf ("saddr %p != test %p\n", info.dli_saddr, test);
exit (1);
}
sym = symp;
if (sym == NULL)
{
puts ("sym == NULL\n");
exit (1);
}
if (ELF32_ST_BIND (sym->st_info) != STB_GLOBAL
|| ELF32_ST_VISIBILITY (sym->st_other) != STV_DEFAULT)
{
printf ("bind %d visibility %d\n",
(int) ELF32_ST_BIND (sym->st_info),
(int) ELF32_ST_VISIBILITY (sym->st_other));
exit (1);
}
}
Lmid_t lmid;
res = dlinfo (handle, RTLD_DI_LMID, &lmid);
if (res != 0)
{
printf ("dlinfo returned %d %s\n", res, dlerror ());
exit (1);
}
else if (lmid != LM_ID_BASE)
{
printf ("lmid %d != %d\n", (int) lmid, (int) LM_ID_BASE);
exit (1);
}
res = test (stdout, 2);
if (res != 4)
{
printf ("Got %i, expected 4\n", res);
exit (1);
}
void *handle2 = dlopen (LIBDL_SO, RTLD_LAZY);
if (handle2 == NULL)
{
printf ("libdl.so: %s\n", dlerror ());
exit (1);
}
#ifdef DO_VERSIONING
if (dlvsym (handle2, "_dlfcn_hook", "GLIBC_PRIVATE") == NULL)
{
printf ("dlvsym: %s\n", dlerror ());
exit (1);
}
#endif
void *(*dlsymfn) (void *, const char *);
dlsymfn = dlsym (handle2, "dlsym");
if (dlsymfn == NULL)
{
printf ("dlsym \"dlsym\": %s\n", dlerror ());
exit (1);
}
void *test2 = dlsymfn (handle, "test");
if (test2 == NULL)
{
printf ("%s\n", dlerror ());
exit (1);
}
else if (test2 != (void *) test)
{
printf ("test %p != test2 %p\n", test, test2);
exit (1);
}
dlclose (handle2);
dlclose (handle);
handle = dlmopen (LM_ID_BASE, "modstatic2.so", RTLD_LAZY);
if (handle == NULL)
{
printf ("%s\n", dlerror ());
exit (1);
}
dlclose (handle);
handle = dlmopen (LM_ID_NEWLM, "modstatic2.so", RTLD_LAZY);
if (handle == NULL)
printf ("LM_ID_NEWLM: %s\n", dlerror ());
else
{
puts ("LM_ID_NEWLM unexpectedly succeeded");
exit (1);
}
return 0;
}