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authorUlrich Drepper <drepper@redhat.com>2004-10-18 23:17:46 +0000
committerUlrich Drepper <drepper@redhat.com>2004-10-18 23:17:46 +0000
commit5f21997b9d6a49ddbed85b044e2be7b182c095a2 (patch)
tree3b63a3a63ebeb466456f52480bd06df198f1dcf5 /include
parent790b6c7a7f65dec508a2e71e6d922ec166640afc (diff)
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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.
Diffstat (limited to 'include')
-rw-r--r--include/dlfcn.h60
-rw-r--r--include/libc-symbols.h18
2 files changed, 76 insertions, 2 deletions
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
diff --git a/include/libc-symbols.h b/include/libc-symbols.h
index e7880b6c46..7dd0d2901b 100644
--- a/include/libc-symbols.h
+++ b/include/libc-symbols.h
@@ -762,6 +762,24 @@ for linking")
# define libresolv_hidden_data_ver(local, name)
#endif
+#if defined NOT_IN_libc && defined IS_IN_libdl
+# define libdl_hidden_proto(name, attrs...) hidden_proto (name, ##attrs)
+# define libdl_hidden_def(name) hidden_def (name)
+# define libdl_hidden_weak(name) hidden_weak (name)
+# define libdl_hidden_ver(local, name) hidden_ver (local, name)
+# define libdl_hidden_data_def(name) hidden_data_def (name)
+# define libdl_hidden_data_weak(name) hidden_data_weak (name)
+# define libdl_hidden_data_ver(local, name) hidden_data_ver (local, name)
+#else
+# define libdl_hidden_proto(name, attrs...)
+# define libdl_hidden_def(name)
+# define libdl_hidden_weak(name)
+# define libdl_hidden_ver(local, name)
+# define libdl_hidden_data_def(name)
+# define libdl_hidden_data_weak(name)
+# define libdl_hidden_data_ver(local, name)
+#endif
+
#ifdef HAVE_BUILTIN_REDIRECTION
# define libc_hidden_builtin_proto(name, attrs...) libc_hidden_proto (name, ##attrs)
# define libc_hidden_builtin_def(name) libc_hidden_def (name)