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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.
This commit is contained in:
Roland McGrath
parent
d29724f870
commit
2430d57a13
15
ChangeLog
15
ChangeLog
@ -1,5 +1,20 @@
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2002-10-17 Roland McGrath <roland@redhat.com>
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* elf/dl-load.c (_dl_map_object_from_fd): Don't check DF_STATIC_TLS.
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* elf/dl-reloc.c (_dl_relocate_object: CHECK_STATIC_TLS): New macro
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to signal error if an IE-model TLS reloc resolved to a dlopen'd module.
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* sysdeps/i386/dl-machine.h (elf_machine_rel, elf_machine_rela):
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Call it after performing TPOFF relocs.
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* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise.
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* sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise.
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* elf/dl-conflict.c (CHECK_STATIC_TLS): New macro (no-op).
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* elf/dl-close.c (remove_slotinfo): Change asserts so as not to crash
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when closing a partially-initialized object.
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* elf/dl-load.c (_dl_map_object_from_fd) [! USE_TLS]: Call lose
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instead of _dl_fatal_printf when we see PT_TLS.
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* Makeconfig (CPPFLAGS): Fix last change to use $(libof-$(<F))
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instead of $(libof-$<).
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@ -53,18 +53,22 @@ remove_slotinfo (size_t idx, struct dtv_slotinfo_list *listp, size_t disp)
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else
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{
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struct link_map *old_map = listp->slotinfo[idx - disp].map;
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assert (old_map != NULL);
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/* Mark the entry as unused. */
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listp->slotinfo[idx - disp].gen = GL(dl_tls_generation) + 1;
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listp->slotinfo[idx - disp].map = NULL;
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/* The entry might still be in its unused state if we are closing an
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object that wasn't fully set up. */
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if (__builtin_expect (old_map != NULL, 1))
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{
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assert (old_map->l_tls_modid == idx);
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/* Mark the entry as unused. */
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listp->slotinfo[idx - disp].gen = GL(dl_tls_generation) + 1;
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listp->slotinfo[idx - disp].map = NULL;
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}
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/* If this is not the last currently used entry no need to look
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further. */
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if (old_map->l_tls_modid != GL(dl_tls_max_dtv_idx))
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if (idx != GL(dl_tls_max_dtv_idx))
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return true;
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assert (old_map->l_tls_modid == GL(dl_tls_max_dtv_idx));
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}
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while (idx - disp > disp == 0 ? 1 + GL(dl_tls_static_nelem) : 0)
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@ -44,6 +44,7 @@ _dl_resolve_conflicts (struct link_map *l, ElfW(Rela) *conflict,
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/* This macro is used as a callback from the ELF_DYNAMIC_RELOCATE code. */
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#define RESOLVE_MAP(ref, version, flags) (*ref = NULL, NULL)
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#define RESOLVE(ref, version, flags) (*ref = NULL, 0)
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#define CHECK_STATIC_TLS(ref_map, sym_map) ((void) 0)
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#define RESOLVE_CONFLICT_FIND_MAP(map, r_offset) \
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do { \
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while ((resolve_conflict_map->l_map_end < (ElfW(Addr)) (r_offset)) \
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@ -957,7 +957,9 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp,
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#else
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/* Uh-oh, the binary expects TLS support but we cannot
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provide it. */
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_dl_fatal_printf ("cannot handle file '%s' with TLS data\n", name);
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errval = 0;
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errstring = N_("cannot handle TLS data");
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goto call_lose;
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#endif
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break;
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}
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@ -1173,11 +1175,7 @@ _dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp,
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/* Make sure we are not dlopen'ing an object
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that has the DF_1_NOOPEN flag set. */
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if ((__builtin_expect (l->l_flags_1 & DF_1_NOOPEN, 0)
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#ifdef USE_TLS
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|| __builtin_expect (l->l_flags & DF_STATIC_TLS, 0)
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#endif
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)
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if (__builtin_expect (l->l_flags_1 & DF_1_NOOPEN, 0)
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&& (mode & __RTLD_DLOPEN))
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{
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/* We are not supposed to load this object. Free all resources. */
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@ -159,6 +159,15 @@ _dl_relocate_object (struct link_map *l, struct r_scope_elem *scope[],
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l->l_lookup_cache.value = _lr; })) \
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: l->l_addr)
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#define CHECK_STATIC_TLS(map, sym_map) \
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do { \
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if (__builtin_expect ((sym_map)->l_tls_offset == 0, 0)) \
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{ \
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errstring = N_("shared object cannot be dlopen()ed"); \
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INTUSE(_dl_signal_error) (0, (map)->l_name, NULL, errstring); \
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} \
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} while (0)
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#include "dynamic-link.h"
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ELF_DYNAMIC_RELOCATE (l, lazy, consider_profiling);
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@ -1,3 +1,9 @@
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2002-10-17 Roland McGrath <roland@redhat.com>
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* Makefile (unload): Don't link in libpthread.so.
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($(objpfx)unload.out): Do depend on it.
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* unload.c (main): Improve error reporting.
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2002-10-09 Roland McGrath <roland@redhat.com>
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* sysdeps/pthread/bits/libc-lock.h (__libc_maybe_call): New macro.
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@ -98,10 +98,11 @@ $(objpfx)libpthread.so: $(common-objpfx)libc.so \
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# Make sure we link with the thread library.
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ifeq ($(build-shared),yes)
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$(addprefix $(objpfx), \
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$(filter-out $(tests-static), \
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$(filter-out $(tests-static) unload, \
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$(tests) $(test-srcs))): $(objpfx)libpthread.so
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$(addprefix $(objpfx),$(librt-tests)): $(common-objpfx)rt/librt.so
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$(objpfx)unload: $(common-objpfx)dlfcn/libdl.so
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$(objpfx)unload.out: $(objpfx)libpthread.so
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else
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$(addprefix $(objpfx),$(tests) $(test-srcs)): $(objpfx)libpthread.a
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$(addprefix $(objpfx),$(librt-tests)): $(common-objpfx)rt/librt.a
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@ -1,5 +1,5 @@
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/* Tests for non-unloading of libpthread.
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Copyright (C) 2000 Free Software Foundation, Inc.
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Copyright (C) 2000, 2002 Free Software Foundation, Inc.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
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The GNU C Library is free software; you can redistribute it and/or
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@ -29,13 +29,13 @@ main (void)
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if (p == NULL)
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{
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puts ("failed to load " LIBPTHREAD_SO);
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printf ("failed to load %s: %s\n", LIBPTHREAD_SO, dlerror ());
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exit (1);
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}
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if (dlclose (p) != 0)
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{
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puts ("dlclose (" LIBPTHREAD_SO ") failed");
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printf ("dlclose (%s) failed: %s\n", LIBPTHREAD_SO, dlerror ());
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exit (1);
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}
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@ -432,6 +432,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
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Therefore the offset is already correct. */
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if (sym != NULL)
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*reloc_addr = sym->st_value;
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CHECK_STATIC_TLS (map, sym_map);
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# endif
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break;
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case R_386_TLS_TPOFF32:
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@ -445,6 +446,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
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block we subtract the offset from that of the TLS block. */
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if (sym != NULL)
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*reloc_addr += sym_map->l_tls_offset - sym->st_value;
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CHECK_STATIC_TLS (map, sym_map);
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# endif
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break;
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case R_386_TLS_TPOFF:
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@ -457,6 +459,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc,
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thread pointer. */
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if (sym != NULL)
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*reloc_addr += sym->st_value - sym_map->l_tls_offset;
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CHECK_STATIC_TLS (map, sym_map);
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# endif
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break;
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#endif /* use TLS */
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@ -549,6 +552,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
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*reloc_addr
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= (sym == NULL ? 0 : sym_map->l_tls_offset - sym->st_value)
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+ reloc->r_addend;
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CHECK_STATIC_TLS (map, sym_map);
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break;
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case R_386_TLS_TPOFF:
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/* The offset is negative, forward from the thread pointer. */
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@ -558,6 +562,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
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*reloc_addr
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= (sym == NULL ? 0 : sym->st_value - sym_map->l_tls_offset)
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+ reloc->r_addend;
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CHECK_STATIC_TLS (map, sym_map);
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break;
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#endif /* use TLS */
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default:
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@ -582,6 +582,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
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*reloc_addr
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= ((sym == NULL ? 0 : sym_map->l_tls_offset + sym->st_value)
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+ reloc->r_addend);
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CHECK_STATIC_TLS (map, sym_map);
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# endif
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break;
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#endif /* use TLS */
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@ -428,11 +428,16 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
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# ifndef RTLD_BOOTSTRAP
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if (sym != NULL)
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# endif
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/* We know the offset of the object the symbol is contained in.
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It is a negative value which will be added to the
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thread pointer. */
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*reloc_addr = (sym->st_value + reloc->r_addend
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- sym_map->l_tls_offset);
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{
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/* We know the offset of the object the symbol is contained in.
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It is a negative value which will be added to the
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thread pointer. */
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*reloc_addr = (sym->st_value + reloc->r_addend
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- sym_map->l_tls_offset);
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# ifndef RTLD_BOOTSTRAP
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CHECK_STATIC_TLS (map, sym_map);
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# endif
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}
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break;
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#endif /* use TLS */
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