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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)
downloadglibc-2430d57a13f4f10312e13c58962cd9104e6428fd.tar.gz
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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 b7b267e2bf..7655ef433e 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 e38deee9de..ae091abd27 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 db9391ea66..2f2a9be566 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 37d1ee019f..d6db62b11e 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);