From 5f21997b9d6a49ddbed85b044e2be7b182c095a2 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Mon, 18 Oct 2004 23:17:46 +0000 Subject: Update. 2004-10-18 Jakub Jelinek * 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. --- dlfcn/modstatic2.c | 228 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 228 insertions(+) create mode 100644 dlfcn/modstatic2.c (limited to 'dlfcn/modstatic2.c') diff --git a/dlfcn/modstatic2.c b/dlfcn/modstatic2.c new file mode 100644 index 0000000000..0703de851c --- /dev/null +++ b/dlfcn/modstatic2.c @@ -0,0 +1,228 @@ +#include +#include +#include +#include +#include +#include + +int test (FILE *out, int a); + +int +test (FILE *out, int a) +{ + fputs ("in modstatic2.c (test)\n", out); + + void *handle = dlopen ("modstatic2-nonexistent.so", RTLD_LAZY); + if (handle == NULL) + fprintf (out, "nonexistent: %s\n", dlerror ()); + else + exit (1); + + handle = dlopen ("modstatic2.so", RTLD_LAZY); + if (handle == NULL) + { + fprintf (out, "%s\n", dlerror ()); + exit (1); + } + + int (*test2) (FILE *, int); + test2 = dlsym (handle, "test"); + if (test2 == NULL) + { + fprintf (out, "%s\n", dlerror ()); + exit (1); + } + if (test2 != test) + { + fprintf (out, "test %p != test2 %p\n", test, test2); + exit (1); + } + + Dl_info info; + int res = dladdr (test2, &info); + if (res == 0) + { + fputs ("dladdr returned 0\n", out); + exit (1); + } + else + { + if (strstr (info.dli_fname, "modstatic2.so") == NULL + || strcmp (info.dli_sname, "test") != 0) + { + fprintf (out, "fname %s sname %s\n", info.dli_fname, info.dli_sname); + exit (1); + } + if (info.dli_saddr != (void *) test2) + { + fprintf (out, "saddr %p != test %p\n", info.dli_saddr, test2); + exit (1); + } + } + + ElfW(Sym) *sym; + void *symp; + res = dladdr1 (test2, &info, &symp, RTLD_DL_SYMENT); + if (res == 0) + { + fputs ("dladdr1 returned 0\n", out); + exit (1); + } + else + { + if (strstr (info.dli_fname, "modstatic2.so") == NULL + || strcmp (info.dli_sname, "test") != 0) + { + fprintf (out, "fname %s sname %s\n", info.dli_fname, info.dli_sname); + exit (1); + } + if (info.dli_saddr != (void *) test2) + { + fprintf (out, "saddr %p != test %p\n", info.dli_saddr, test2); + exit (1); + } + sym = symp; + if (sym == NULL) + { + fputs ("sym == NULL\n", out); + exit (1); + } + if (ELF32_ST_BIND (sym->st_info) != STB_GLOBAL + || ELF32_ST_VISIBILITY (sym->st_other) != STV_DEFAULT) + { + fprintf (out, "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) + { + fprintf (out, "dlinfo returned %d %s\n", res, dlerror ()); + exit (1); + } + else if (lmid != LM_ID_BASE) + { + fprintf (out, "lmid %d != %d\n", (int) lmid, (int) LM_ID_BASE); + exit (1); + } + + void *handle2 = dlopen (LIBDL_SO, RTLD_LAZY); + if (handle2 == NULL) + { + fprintf (out, "libdl.so: %s\n", dlerror ()); + exit (1); + } + +#ifdef DO_VERSIONING + if (dlvsym (handle2, "_dlfcn_hook", "GLIBC_PRIVATE") == NULL) + { + fprintf (out, "dlvsym: %s\n", dlerror ()); + exit (1); + } +#endif + + void *(*dlsymfn) (void *, const char *); + dlsymfn = dlsym (handle2, "dlsym"); + if (dlsymfn == NULL) + { + fprintf (out, "dlsym \"dlsym\": %s\n", dlerror ()); + exit (1); + } + void *test3 = dlsymfn (handle, "test"); + if (test3 == NULL) + { + fprintf (out, "%s\n", dlerror ()); + exit (1); + } + else if (test3 != (void *) test2) + { + fprintf (out, "test2 %p != test3 %p\n", test2, test3); + exit (1); + } + + dlclose (handle2); + dlclose (handle); + + handle = dlmopen (LM_ID_BASE, "modstatic2.so", RTLD_LAZY); + if (handle == NULL) + { + fprintf (out, "%s\n", dlerror ()); + exit (1); + } + dlclose (handle); + + handle = dlmopen (LM_ID_NEWLM, "modstatic2.so", RTLD_LAZY); + if (handle == NULL) + fprintf (out, "LM_ID_NEWLM: %s\n", dlerror ()); + else + { + fputs ("LM_ID_NEWLM unexpectedly succeeded\n", out); + exit (1); + } + + handle = dlopen ("modstatic.so", RTLD_LAZY); + if (handle == NULL) + { + fprintf (out, "%s\n", dlerror ()); + exit (1); + } + + int (*test4) (int); + test4 = dlsym (handle, "test"); + if (test4 == NULL) + { + fprintf (out, "%s\n", dlerror ()); + exit (1); + } + + res = test4 (16); + if (res != 16 + 16) + { + fprintf (out, "modstatic.so (test) returned %d\n", res); + exit (1); + } + + res = dladdr1 (test4, &info, &symp, RTLD_DL_SYMENT); + if (res == 0) + { + fputs ("dladdr1 returned 0\n", out); + exit (1); + } + else + { + if (strstr (info.dli_fname, "modstatic.so") == NULL + || strcmp (info.dli_sname, "test") != 0) + { + fprintf (out, "fname %s sname %s\n", info.dli_fname, info.dli_sname); + exit (1); + } + if (info.dli_saddr != (void *) test4) + { + fprintf (out, "saddr %p != test %p\n", info.dli_saddr, test4); + exit (1); + } + sym = symp; + if (sym == NULL) + { + fputs ("sym == NULL\n", out); + exit (1); + } + if (ELF32_ST_BIND (sym->st_info) != STB_GLOBAL + || ELF32_ST_VISIBILITY (sym->st_other) != STV_DEFAULT) + { + fprintf (out, "bind %d visibility %d\n", + (int) ELF32_ST_BIND (sym->st_info), + (int) ELF32_ST_VISIBILITY (sym->st_other)); + exit (1); + } + } + + dlclose (handle); + + fputs ("leaving modstatic2.c (test)\n", out); + return a + a; +} -- cgit v1.2.3