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authorUlrich Drepper <drepper@redhat.com>2004-02-26 20:06:58 +0000
committerUlrich Drepper <drepper@redhat.com>2004-02-26 20:06:58 +0000
commit3b3ddb4f7db98ec9e912ccdf54d35df4aa30e04a (patch)
treeedfbae360af50df8fe0825c70fb7994c97583d1a /elf
parent773640b4f58ba9f2a13bd3b9ccf435aef4ed3f23 (diff)
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Update.
2004-02-26 Jakub Jelinek <jakub@redhat.com> * elf/rtld.c (dl_main): Correctly set up l_map_end and l_addr in vDSO's link_map, don't assume l_addr == 0. Set GL(dl_sysinfo) from e_entry only if AT_SYSINFO not present and adjust by l_addr. Take vDSO into account when inserting rtld into _dl_loaded chain.
Diffstat (limited to 'elf')
-rw-r--r--elf/rtld.c42
1 files changed, 25 insertions, 17 deletions
diff --git a/elf/rtld.c b/elf/rtld.c
index 0ce1fda..a6910e5 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -1211,11 +1211,9 @@ ERROR: ld.so: object '%s' from %s cannot be preloaded: ignored.\n",
}
#ifdef NEED_DL_SYSINFO
+ struct link_map *sysinfo_map = NULL;
if (GL(dl_sysinfo_dso) != NULL)
{
- /* We have a prelinked DSO preloaded by the system. */
- GL(dl_sysinfo) = GL(dl_sysinfo_dso)->e_entry;
-
/* Do an abridged version of the work _dl_map_object_from_fd would do
to map in the object. It's already mapped and prelinked (and
better be, since it's read-only and so we couldn't relocate it).
@@ -1225,9 +1223,6 @@ ERROR: ld.so: object '%s' from %s cannot be preloaded: ignored.\n",
if (__builtin_expect (l != NULL, 1))
{
static ElfW(Dyn) dyn_temp[DL_RO_DYN_TEMP_CNT];
-#ifndef NDEBUG
- uint_fast16_t pt_load_num = 0;
-#endif
l->l_phdr = ((const void *) GL(dl_sysinfo_dso)
+ GL(dl_sysinfo_dso)->e_phoff);
@@ -1239,21 +1234,21 @@ ERROR: ld.so: object '%s' from %s cannot be preloaded: ignored.\n",
{
l->l_ld = (void *) ph->p_vaddr;
l->l_ldnum = ph->p_memsz / sizeof (ElfW(Dyn));
- break;
}
-#ifndef NDEBUG
- if (ph->p_type == PT_LOAD)
+ else if (ph->p_type == PT_LOAD)
{
- assert (pt_load_num
- || (void *) ph->p_vaddr == GL(dl_sysinfo_dso));
- pt_load_num++;
+ if (! l->l_addr)
+ l->l_addr = ph->p_vaddr;
+ else if (ph->p_vaddr + ph->p_memsz >= l->l_map_end)
+ l->l_map_end = ph->p_vaddr + ph->p_memsz;
}
-#endif
}
+ l->l_map_start = (ElfW(Addr)) GL(dl_sysinfo_dso);
+ l->l_addr = l->l_map_start - l->l_addr;
+ l->l_map_end += l->l_addr;
elf_get_dynamic_info (l, dyn_temp);
_dl_setup_hash (l);
l->l_relocated = 1;
- l->l_map_start = (ElfW(Addr)) GL(dl_sysinfo_dso);
/* Now that we have the info handy, use the DSO image's soname
so this object can be looked up by name. Note that we do not
@@ -1271,6 +1266,11 @@ ERROR: ld.so: object '%s' from %s cannot be preloaded: ignored.\n",
_dl_fatal_printf ("out of memory\n");
l->l_libname->name = memcpy (copy, dsoname, len);
}
+
+ /* We have a prelinked DSO preloaded by the system. */
+ if (GL(dl_sysinfo) == DL_SYSINFO_DEFAULT)
+ GL(dl_sysinfo) = GL(dl_sysinfo_dso)->e_entry + l->l_addr;
+ sysinfo_map = l;
}
}
#endif
@@ -1316,9 +1316,17 @@ ERROR: ld.so: object '%s' from %s cannot be preloaded: ignored.\n",
++i;
GL(dl_rtld_map).l_prev = GL(dl_loaded)->l_searchlist.r_list[i - 1];
if (__builtin_expect (mode, normal) == normal)
- GL(dl_rtld_map).l_next = (i + 1 < GL(dl_loaded)->l_searchlist.r_nlist
- ? GL(dl_loaded)->l_searchlist.r_list[i + 1]
- : NULL);
+ {
+ GL(dl_rtld_map).l_next = (i + 1 < GL(dl_loaded)->l_searchlist.r_nlist
+ ? GL(dl_loaded)->l_searchlist.r_list[i + 1]
+ : NULL);
+#ifdef NEED_DL_SYSINFO
+ if (sysinfo_map != NULL
+ && GL(dl_rtld_map).l_prev->l_next == sysinfo_map
+ && GL(dl_rtld_map).l_next != sysinfo_map)
+ GL(dl_rtld_map).l_prev = sysinfo_map;
+#endif
+ }
else
/* In trace mode there might be an invisible object (which we
could not find) after the previous one in the search list.