* 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.

ChangeLog

@@ -1,5 +1,20 @@
 2002-10-17  Roland McGrath  <roland@redhat.com>
 
+	* 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.
+
 	* Makeconfig (CPPFLAGS): Fix last change to use $(libof-$(<F))
 	instead of $(libof-$<).
 

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.  */
+      /* The entry might still be in its unused state if we are closing an
-      listp->slotinfo[idx - disp].gen = GL(dl_tls_generation) + 1;
+	 object that wasn't fully set up.  */
-      listp->slotinfo[idx - disp].map = NULL;
+      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)

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))	      \

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)
+  if (__builtin_expect (l->l_flags_1 & DF_1_NOOPEN, 0)
-#ifdef USE_TLS
-       || __builtin_expect (l->l_flags & DF_STATIC_TLS, 0)
-#endif
-       )
       && (mode & __RTLD_DLOPEN))
     {
       /* We are not supposed to load this object.  Free all resources.  */

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);

linuxthreads/ChangeLog

@@ -1,3 +1,9 @@
+2002-10-17  Roland McGrath  <roland@redhat.com>
+
+	* Makefile (unload): Don't link in libpthread.so.
+	($(objpfx)unload.out): Do depend on it.
+	* unload.c (main): Improve error reporting.
+
 2002-10-09  Roland McGrath  <roland@redhat.com>
 
 	* sysdeps/pthread/bits/libc-lock.h (__libc_maybe_call): New macro.

linuxthreads/Makefile

@@ -98,10 +98,11 @@ $(objpfx)libpthread.so: $(common-objpfx)libc.so \
 # Make sure we link with the thread library.
 ifeq ($(build-shared),yes)
 $(addprefix $(objpfx), \
-  $(filter-out $(tests-static), \
+  $(filter-out $(tests-static) unload, \
     $(tests) $(test-srcs))): $(objpfx)libpthread.so
 $(addprefix $(objpfx),$(librt-tests)): $(common-objpfx)rt/librt.so
 $(objpfx)unload: $(common-objpfx)dlfcn/libdl.so
+$(objpfx)unload.out: $(objpfx)libpthread.so
 else
 $(addprefix $(objpfx),$(tests) $(test-srcs)): $(objpfx)libpthread.a
 $(addprefix $(objpfx),$(librt-tests)): $(common-objpfx)rt/librt.a

linuxthreads/unload.c

@@ -1,5 +1,5 @@
 /* Tests for non-unloading of libpthread.
-   Copyright (C) 2000 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2002 Free Software Foundation, Inc.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -29,13 +29,13 @@ main (void)
 
   if (p == NULL)
     {
-      puts ("failed to load " LIBPTHREAD_SO);
+      printf ("failed to load %s: %s\n", LIBPTHREAD_SO, dlerror ());
       exit (1);
     }
 
   if (dlclose (p) != 0)
     {
-      puts ("dlclose (" LIBPTHREAD_SO ") failed");
+      printf ("dlclose (%s) failed: %s\n", LIBPTHREAD_SO, dlerror ());
       exit (1);
     }
 

sysdeps/i386/dl-machine.h

@@ -432,6 +432,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
 	     Therefore the offset is already correct.  */
 	  if (sym != NULL)
 	    *reloc_addr = sym->st_value;
+	  CHECK_STATIC_TLS (map, sym_map);
 # endif
 	  break;
 	case R_386_TLS_TPOFF32:
@@ -445,6 +446,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
 	     block we subtract the offset from that of the TLS block.  */
 	  if (sym != NULL)
 	    *reloc_addr += sym_map->l_tls_offset - sym->st_value;
+	  CHECK_STATIC_TLS (map, sym_map);
 # endif
 	  break;
 	case R_386_TLS_TPOFF:
@@ -457,6 +459,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
 	     thread pointer.  */
 	  if (sym != NULL)
 	    *reloc_addr += sym->st_value - sym_map->l_tls_offset;
+	  CHECK_STATIC_TLS (map, sym_map);
 # endif
 	  break;
 #endif	/* use TLS */
@@ -549,6 +552,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
 	  *reloc_addr
 	    = (sym == NULL ? 0 : sym_map->l_tls_offset - sym->st_value)
 	      + reloc->r_addend;
+	  CHECK_STATIC_TLS (map, sym_map);
 	  break;
 	case R_386_TLS_TPOFF:
 	  /* The offset is negative, forward from the thread pointer.  */
@@ -558,6 +562,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
 	  *reloc_addr
 	    = (sym == NULL ? 0 : sym->st_value - sym_map->l_tls_offset)
 	      + reloc->r_addend;
+	  CHECK_STATIC_TLS (map, sym_map);
 	  break;
 #endif	/* use TLS */
 	default:

sysdeps/sh/dl-machine.h

@@ -582,6 +582,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
 	  *reloc_addr
 	    = ((sym == NULL ? 0 : sym_map->l_tls_offset + sym->st_value)
 	       + reloc->r_addend);
+	  CHECK_STATIC_TLS (map, sym_map);
 # endif
 	  break;
 #endif	/* use TLS */

sysdeps/x86_64/dl-machine.h

@@ -428,11 +428,16 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
 # ifndef RTLD_BOOTSTRAP
 	  if (sym != NULL)
 # endif
-	    /* We know the offset of the object the symbol is contained in.
+	    {
-	       It is a negative value which will be added to the
+	      /* We know the offset of the object the symbol is contained in.
-	       thread pointer.  */
+		 It is a negative value which will be added to the
-	    *reloc_addr = (sym->st_value + reloc->r_addend
+		 thread pointer.  */
-			   - sym_map->l_tls_offset);
+	      *reloc_addr = (sym->st_value + reloc->r_addend
+			     - sym_map->l_tls_offset);
+# ifndef RTLD_BOOTSTRAP
+	      CHECK_STATIC_TLS (map, sym_map);
+# endif
+	    }
 	  break;
 #endif	/* use TLS */