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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 /malloc/arena.c
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 'malloc/arena.c')
-rw-r--r--malloc/arena.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/malloc/arena.c b/malloc/arena.c
index 9018a4f..024e191 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -347,6 +347,9 @@ __failing_morecore (ptrdiff_t d)
{
return (void *) MORECORE_FAILURE;
}
+
+extern struct dl_open_hook *_dl_open_hook;
+libc_hidden_proto (_dl_open_hook);
# endif
# if defined SHARED && defined USE_TLS && !USE___THREAD
@@ -429,10 +432,14 @@ ptmalloc_init (void)
main_arena.next = &main_arena;
#if defined _LIBC && defined SHARED
- /* In case this libc copy is in a non-default namespace, never use brk. */
+ /* In case this libc copy is in a non-default namespace, never use brk.
+ Likewise if dlopened from statically linked program. */
Dl_info di;
struct link_map *l;
- if (_dl_addr (ptmalloc_init, &di, &l, NULL) != 0 && l->l_ns != LM_ID_BASE)
+
+ if (_dl_open_hook != NULL
+ || (_dl_addr (ptmalloc_init, &di, &l, NULL) != 0
+ && l->l_ns != LM_ID_BASE))
__morecore = __failing_morecore;
#endif