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elf: Introduce the _dl_open_relocate_one_object function
It is extracted from dl_open_worker_begin. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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@ -468,6 +468,50 @@ activate_nodelete (struct link_map *new)
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}
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}
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/* Relocate the object L. *RELOCATION_IN_PROGRESS controls whether
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the debugger is notified of the start of relocation processing. */
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static void
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_dl_open_relocate_one_object (struct dl_open_args *args, struct r_debug *r,
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struct link_map *l, int reloc_mode,
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bool *relocation_in_progress)
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{
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if (l->l_real->l_relocated)
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return;
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if (!*relocation_in_progress)
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{
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/* Notify the debugger that relocations are about to happen. */
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LIBC_PROBE (reloc_start, 2, args->nsid, r);
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*relocation_in_progress = true;
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}
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#ifdef SHARED
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if (__glibc_unlikely (GLRO(dl_profile) != NULL))
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{
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/* If this here is the shared object which we want to profile
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make sure the profile is started. We can find out whether
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this is necessary or not by observing the `_dl_profile_map'
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variable. If it was NULL but is not NULL afterwards we must
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start the profiling. */
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struct link_map *old_profile_map = GL(dl_profile_map);
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_dl_relocate_object (l, l->l_scope, reloc_mode | RTLD_LAZY, 1);
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if (old_profile_map == NULL && GL(dl_profile_map) != NULL)
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{
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/* We must prepare the profiling. */
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_dl_start_profile ();
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/* Prevent unloading the object. */
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GL(dl_profile_map)->l_nodelete_active = true;
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}
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}
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else
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#endif
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_dl_relocate_object (l, l->l_scope, reloc_mode, 0);
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}
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/* struct dl_init_args and call_dl_init are used to call _dl_init with
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exception handling disabled. */
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struct dl_init_args
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@ -654,7 +698,7 @@ dl_open_worker_begin (void *a)
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}
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while (l != NULL);
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int relocation_in_progress = 0;
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bool relocation_in_progress = false;
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/* Perform relocation. This can trigger lazy binding in IFUNC
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resolvers. For NODELETE mappings, these dependencies are not
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@ -665,44 +709,8 @@ dl_open_worker_begin (void *a)
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are undefined anyway, so this is not a problem. */
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for (unsigned int i = last; i-- > first; )
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{
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l = new->l_initfini[i];
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if (l->l_real->l_relocated)
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continue;
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if (! relocation_in_progress)
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{
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/* Notify the debugger that relocations are about to happen. */
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LIBC_PROBE (reloc_start, 2, args->nsid, r);
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relocation_in_progress = 1;
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}
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#ifdef SHARED
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if (__glibc_unlikely (GLRO(dl_profile) != NULL))
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{
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/* If this here is the shared object which we want to profile
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make sure the profile is started. We can find out whether
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this is necessary or not by observing the `_dl_profile_map'
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variable. If it was NULL but is not NULL afterwards we must
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start the profiling. */
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struct link_map *old_profile_map = GL(dl_profile_map);
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_dl_relocate_object (l, l->l_scope, reloc_mode | RTLD_LAZY, 1);
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if (old_profile_map == NULL && GL(dl_profile_map) != NULL)
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{
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/* We must prepare the profiling. */
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_dl_start_profile ();
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/* Prevent unloading the object. */
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GL(dl_profile_map)->l_nodelete_active = true;
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}
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}
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else
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#endif
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_dl_relocate_object (l, l->l_scope, reloc_mode, 0);
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}
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_dl_open_relocate_one_object (args, r, new->l_initfini[i], reloc_mode,
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&relocation_in_progress);
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/* This only performs the memory allocations. The actual update of
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the scopes happens below, after failure is impossible. */
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