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. --- include/dlfcn.h | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 58 insertions(+), 2 deletions(-) (limited to 'include/dlfcn.h') diff --git a/include/dlfcn.h b/include/dlfcn.h index d6111c0e76..3ff855a367 100644 --- a/include/dlfcn.h +++ b/include/dlfcn.h @@ -11,8 +11,6 @@ #define __LM_ID_CALLER -2 /* Now define the internal interfaces. */ -extern void *__dlvsym (void *__handle, __const char *__name, - __const char *__version); #define __libc_dlopen(name) __libc_dlopen_mode (name, RTLD_LAZY) extern void *__libc_dlopen_mode (__const char *__name, int __mode); @@ -76,4 +74,62 @@ extern int _dl_catch_error (const char **objname, const char **errstring, extern int _dlerror_run (void (*operate) (void *), void *args) internal_function; +#ifdef SHARED +# define DL_CALLER_DECL /* Nothing */ +# define DL_CALLER RETURN_ADDRESS (0) +#else +# define DL_CALLER_DECL , void *dl_caller +# define DL_CALLER dl_caller +#endif + +struct dlfcn_hook +{ + void *(*dlopen) (const char *file, int mode, void *dl_caller); + int (*dlclose) (void *handle); + void *(*dlsym) (void *handle, const char *name, void *dl_caller); + void *(*dlvsym) (void *handle, const char *name, const char *version, + void *dl_caller); + char *(*dlerror) (void); + int (*dladdr) (const void *address, Dl_info *info); + int (*dladdr1) (const void *address, Dl_info *info, + void **extra_info, int flags); + int (*dlinfo) (void *handle, int request, void *arg, void *dl_caller); + void *(*dlmopen) (Lmid_t nsid, const char *file, int mode, void *dl_caller); + void *pad[4]; +}; + +extern struct dlfcn_hook *_dlfcn_hook; +libdl_hidden_proto (_dlfcn_hook) + +extern void *__dlopen (const char *file, int mode DL_CALLER_DECL) + attribute_hidden; +extern void *__dlmopen (Lmid_t nsid, const char *file, int mode DL_CALLER_DECL) + attribute_hidden; +extern int __dlclose (void *handle) + attribute_hidden; +extern void *__dlsym (void *handle, const char *name DL_CALLER_DECL) + attribute_hidden; +extern void *__dlvsym (void *handle, const char *name, const char *version + DL_CALLER_DECL) + attribute_hidden; +extern char *__dlerror (void) + attribute_hidden; +extern int __dladdr (const void *address, Dl_info *info) + attribute_hidden; +extern int __dladdr1 (const void *address, Dl_info *info, + void **extra_info, int flags) + attribute_hidden; +extern int __dlinfo (void *handle, int request, void *arg DL_CALLER_DECL) + attribute_hidden; + +#ifndef SHARED +struct link_map; +extern void * __libc_dlsym_private (struct link_map *map, const char *name) + attribute_hidden; +extern void __libc_register_dl_open_hook (struct link_map *map) + attribute_hidden; +extern void __libc_register_dlfcn_hook (struct link_map *map) + attribute_hidden; +#endif + #endif -- cgit v1.2.3