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authorUlrich Drepper <drepper@redhat.com>2004-10-14 02:08:23 +0000
committerUlrich Drepper <drepper@redhat.com>2004-10-14 02:08:23 +0000
commitc0f62c56788c48b9fb36dc609c0a9f9db3667306 (patch)
tree79c7e9692bb59dc90e4466e238cd4578c2d5c8f3 /elf/dl-object.c
parent8e9185fb1c0294d2eb4bee0797d7e1c2850111ea (diff)
downloadglibc-c0f62c56788c48b9fb36dc609c0a9f9db3667306.tar.gz
[BZ #77]
Update. Add support for namespaces in the dynamic linker. * dlfcn/Makefile (libdl-routines): Add dlmopen. * dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen. * dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM. Declare dlmopen. Document RTLD_DI_LMID. * dlfcn/dlinfo.c: Handle RTLD_DI_LMID. * dlfcn/dlmopen.c: New file. * dlfcn/dlopen.c: Pass new parameter to _dl_open. * dlfcn/dlopenold.c: Likewise. * elf/dl-addr.c: Adjust for removal of GL(dl_loaded). * elf/dl-caller.c: Likewise. * elf/dl-close.c: Likewise. * elf/dl-conflict.c: Likewise. * elf/dl-debug.c: Likewise. * elf/dl-lookup.c: Likewise. * elf/dl-sym.c: Likewise. * elf/dl-version.c: Likewise. * elf/do-lookup.h: Likewise. * elf/rtld.c: Likewise. * sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise. * elf/dl-depsc: Likewise. Add new parameter to _dl_map_object. * elf/dl-fini.c: Call destructors in all namespaces. * elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of GL(dl_loaded). * elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal of GL(dl_loaded). * elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second time. Reuse the one from the main namespace in all others. Pass new parameter to _dl_new_object. Adjust for removal of GL(dl_loaded). * elf/dl-object.c: Take new parameter. Use it to initialize l_ns. Adjust for removal of GL(dl_loaded). * elf/dl-open.c (_dl_open): Take new parameter. Adjust for removal of GL(dl_loaded). * elf/dl-support.c: Replace global _dl_loaded etc variables with _dl_ns variable. * include/dlfcn.h: Adjust prototype of _dl_open. Define __LM_ID_CALLER. * include/link.h: Add l_real, l_ns, and l_direct_opencount elements. * sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is using TLS we need memory appropriate to the number of namespaces. * sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded, _dl_nloaded, _dl_global_scope, _dl_main_searchlist, and _dl_global_scope_alloc with _dl_ns element. Define DL_NNS. Adjust prototypes of _dl_map_object and member in rtld_global_ro. * malloc/malloc.c: Include <dlfcn.h>. * malloc/arena.c (ptmalloc_init): If libc is not in primary namespace, never use brk. * elf/Makefile: Add rules to build and run tst-dlmopen1 and tst-dlmopen2. * elf/tst-dlmopen1.c: New file. * elf/tst-dlmopen1mod.c: New file. * elf/tst-dlmopen2.c: New file. * elf/dl-close.c: Improve reference counting by tracking direct loads. * elf/dl-lookup.c (add_dependency): Likewise. * elf/dl-open.c (dl_open_worker): Likewise. * elf/rtld.c (dl_main): Likewise. 2004-09-09 GOTO Masanori <gotom@debian.or.jp> [BZ #77] * elf/dl-close.c: Count down l_opencount to check not only for l_reldeps, but also l_initfini. 2004-10-13 Ulrich Drepper <drepper@redhat.com>
Diffstat (limited to 'elf/dl-object.c')
-rw-r--r--elf/dl-object.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/elf/dl-object.c b/elf/dl-object.c
index 91b1fa2187..b46ebdc33f 100644
--- a/elf/dl-object.c
+++ b/elf/dl-object.c
@@ -32,7 +32,7 @@
struct link_map *
internal_function
_dl_new_object (char *realname, const char *libname, int type,
- struct link_map *loader, int mode)
+ struct link_map *loader, int mode, Lmid_t nsid)
{
struct link_map *l;
int idx;
@@ -45,6 +45,7 @@ _dl_new_object (char *realname, const char *libname, int type,
if (new == NULL)
return NULL;
+ new->l_real = new;
new->l_libname = newname = (struct libname_list *) (new + 1);
newname->name = (char *) memcpy (newname + 1, libname, libname_len);
/* newname->next = NULL; We use calloc therefore not necessary. */
@@ -56,6 +57,7 @@ _dl_new_object (char *realname, const char *libname, int type,
#if defined USE_TLS && NO_TLS_OFFSET != 0
new->l_tls_offset = NO_TLS_OFFSET;
#endif
+ new->l_ns = nsid;
/* new->l_global = 0; We use calloc therefore not necessary. */
@@ -68,9 +70,9 @@ _dl_new_object (char *realname, const char *libname, int type,
/* Counter for the scopes we have to handle. */
idx = 0;
- if (GL(dl_loaded) != NULL)
+ if (GL(dl_ns)[nsid]._ns_loaded != NULL)
{
- l = GL(dl_loaded);
+ l = GL(dl_ns)[nsid]._ns_loaded;
while (l->l_next != NULL)
l = l->l_next;
new->l_prev = l;
@@ -78,11 +80,11 @@ _dl_new_object (char *realname, const char *libname, int type,
l->l_next = new;
/* Add the global scope. */
- new->l_scope[idx++] = &GL(dl_loaded)->l_searchlist;
+ new->l_scope[idx++] = &GL(dl_ns)[nsid]._ns_loaded->l_searchlist;
}
else
- GL(dl_loaded) = new;
- ++GL(dl_nloaded);
+ GL(dl_ns)[nsid]._ns_loaded = new;
+ ++GL(dl_ns)[nsid]._ns_nloaded;
++GL(dl_load_adds);
/* If we have no loader the new object acts as it. */