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authorRoland McGrath <roland@gnu.org>2002-10-17 12:10:17 +0000
committerRoland McGrath <roland@gnu.org>2002-10-17 12:10:17 +0000
commit2430d57a13f4f10312e13c58962cd9104e6428fd (patch)
tree6690ca0a7115c798e9c34cf24f55acf14311d661 /elf
parentd29724f8706e4e46994d6fabafc8389f7624cd0f (diff)
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* elf/dl-load.c (_dl_map_object_from_fd): Don't check DF_STATIC_TLS.
* elf/dl-reloc.c (_dl_relocate_object: CHECK_STATIC_TLS): New macro to signal error if an IE-model TLS reloc resolved to a dlopen'd module. * sysdeps/i386/dl-machine.h (elf_machine_rel, elf_machine_rela): Call it after performing TPOFF relocs. * sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise. * elf/dl-conflict.c (CHECK_STATIC_TLS): New macro (no-op). * elf/dl-close.c (remove_slotinfo): Change asserts so as not to crash when closing a partially-initialized object. * elf/dl-load.c (_dl_map_object_from_fd) [! USE_TLS]: Call lose instead of _dl_fatal_printf when we see PT_TLS.
Diffstat (limited to 'elf')
-rw-r--r--elf/dl-close.c18
-rw-r--r--elf/dl-conflict.c1
-rw-r--r--elf/dl-load.c10
-rw-r--r--elf/dl-reloc.c9
4 files changed, 25 insertions, 13 deletions
diff --git a/elf/dl-close.c b/elf/dl-close.c
index b7b267e..7655ef4 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -53,18 +53,22 @@ remove_slotinfo (size_t idx, struct dtv_slotinfo_list *listp, size_t disp)
else
{
struct link_map *old_map = listp->slotinfo[idx - disp].map;
- assert (old_map != NULL);
- /* Mark the entry as unused. */
- listp->slotinfo[idx - disp].gen = GL(dl_tls_generation) + 1;
- listp->slotinfo[idx - disp].map = NULL;
+ /* The entry might still be in its unused state if we are closing an
+ object that wasn't fully set up. */
+ if (__builtin_expect (old_map != NULL, 1))
+ {
+ assert (old_map->l_tls_modid == idx);
+
+ /* Mark the entry as unused. */
+ listp->slotinfo[idx - disp].gen = GL(dl_tls_generation) + 1;
+ listp->slotinfo[idx - disp].map = NULL;
+ }
/* If this is not the last currently used entry no need to look
further. */
- if (old_map->l_tls_modid != GL(dl_tls_max_dtv_idx))
+ if (idx != GL(dl_tls_max_dtv_idx))
return true;
-
- assert (old_map->l_tls_modid == GL(dl_tls_max_dtv_idx));
}
while (idx - disp > disp == 0 ? 1 + GL(dl_tls_static_nelem) : 0)
diff --git a/elf/dl-conflict.c b/elf/dl-conflict.c
index e38deee..ae091ab 100644
--- a/elf/dl-conflict.c
+++ b/elf/dl-conflict.c
@@ -44,6 +44,7 @@ _dl_resolve_conflicts (struct link_map *l, ElfW(Rela) *conflict,
/* This macro is used as a callback from the ELF_DYNAMIC_RELOCATE code. */
#define RESOLVE_MAP(ref, version, flags) (*ref = NULL, NULL)
#define RESOLVE(ref, version, flags) (*ref = NULL, 0)
+#define CHECK_STATIC_TLS(ref_map, sym_map) ((void) 0)
#define RESOLVE_CONFLICT_FIND_MAP(map, r_offset) \
do { \
while ((resolve_conflict_map->l_map_end < (ElfW(Addr)) (r_offset)) \
diff --git a/elf/dl-load.c b/elf/dl-load.c
index db9391e..2f2a9be 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -957,7 +957,9 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp,
#else
/* Uh-oh, the binary expects TLS support but we cannot
provide it. */
- _dl_fatal_printf ("cannot handle file '%s' with TLS data\n", name);
+ errval = 0;
+ errstring = N_("cannot handle TLS data");
+ goto call_lose;
#endif
break;
}
@@ -1173,11 +1175,7 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp,
/* Make sure we are not dlopen'ing an object
that has the DF_1_NOOPEN flag set. */
- if ((__builtin_expect (l->l_flags_1 & DF_1_NOOPEN, 0)
-#ifdef USE_TLS
- || __builtin_expect (l->l_flags & DF_STATIC_TLS, 0)
-#endif
- )
+ if (__builtin_expect (l->l_flags_1 & DF_1_NOOPEN, 0)
&& (mode & __RTLD_DLOPEN))
{
/* We are not supposed to load this object. Free all resources. */
diff --git a/elf/dl-reloc.c b/elf/dl-reloc.c
index 37d1ee0..d6db62b 100644
--- a/elf/dl-reloc.c
+++ b/elf/dl-reloc.c
@@ -159,6 +159,15 @@ _dl_relocate_object (struct link_map *l, struct r_scope_elem *scope[],
l->l_lookup_cache.value = _lr; })) \
: l->l_addr)
+#define CHECK_STATIC_TLS(map, sym_map) \
+ do { \
+ if (__builtin_expect ((sym_map)->l_tls_offset == 0, 0)) \
+ { \
+ errstring = N_("shared object cannot be dlopen()ed"); \
+ INTUSE(_dl_signal_error) (0, (map)->l_name, NULL, errstring); \
+ } \
+ } while (0)
+
#include "dynamic-link.h"
ELF_DYNAMIC_RELOCATE (l, lazy, consider_profiling);