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111 lines
3.7 KiB
Diff
111 lines
3.7 KiB
Diff
partially revert commit 4bff6e0175ed195871f4e01cc4c4c33274b8f6e3 - caused segmentation faults in dlopen
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References:
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http://comments.gmane.org/gmane.comp.lib.glibc.user/1227
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http://sourceware.org/ml/libc-alpha/2011-06/msg00006.html
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diff --git a/libc/elf/dl-close.c b/libc/elf/dl-close.c
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index 4b17bf8..733cc1b 100644
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--- a/libc/elf/dl-close.c
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+++ b/libc/elf/dl-close.c
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@@ -119,17 +119,8 @@ _dl_close_worker (struct link_map *map)
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if (map->l_direct_opencount > 0 || map->l_type != lt_loaded
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|| dl_close_state != not_pending)
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{
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- if (map->l_direct_opencount == 0)
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- {
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- if (map->l_type == lt_loaded)
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- dl_close_state = rerun;
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- else if (map->l_type == lt_library)
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- {
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- struct link_map **oldp = map->l_initfini;
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- map->l_initfini = map->l_orig_initfini;
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- _dl_scope_free (oldp);
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- }
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- }
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+ if (map->l_direct_opencount == 0 && map->l_type == lt_loaded)
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+ dl_close_state = rerun;
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/* There are still references to this object. Do nothing more. */
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if (__builtin_expect (GLRO_dl_debug_mask & DL_DEBUG_FILES, 0))
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diff --git a/libc/elf/dl-deps.c b/libc/elf/dl-deps.c
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index 51cb2fa..eddcbf0 100644
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--- a/libc/elf/dl-deps.c
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+++ b/libc/elf/dl-deps.c
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@@ -489,6 +489,7 @@ _dl_map_object_deps (struct link_map *map,
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nneeded * sizeof needed[0]);
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atomic_write_barrier ();
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l->l_initfini = l_initfini;
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+ l->l_free_initfini = 1;
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}
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/* If we have no auxiliary objects just go on to the next map. */
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@@ -689,6 +690,7 @@ Filters not supported with LD_TRACE_PRELINKING"));
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l_initfini[nlist] = NULL;
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atomic_write_barrier ();
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map->l_initfini = l_initfini;
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+ map->l_free_initfini = 1;
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if (l_reldeps != NULL)
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{
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atomic_write_barrier ();
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@@ -697,7 +699,7 @@ Filters not supported with LD_TRACE_PRELINKING"));
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_dl_scope_free (old_l_reldeps);
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}
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if (old_l_initfini != NULL)
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- map->l_orig_initfini = old_l_initfini;
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+ _dl_scope_free (old_l_initfini);
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if (errno_reason)
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_dl_signal_error (errno_reason == -1 ? 0 : errno_reason, objname,
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diff --git a/libc/elf/dl-libc.c b/libc/elf/dl-libc.c
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index f44fa10..7563093 100644
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--- a/libc/elf/dl-libc.c
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+++ b/libc/elf/dl-libc.c
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@@ -284,6 +284,10 @@ libc_freeres_fn (free_mem)
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if (! old->dont_free)
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free (old);
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}
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+
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+ /* Free the initfini dependency list. */
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+ if (l->l_free_initfini)
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+ free (l->l_initfini);
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}
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if (__builtin_expect (GL(dl_ns)[ns]._ns_global_scope_alloc, 0) != 0
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diff --git a/libc/elf/rtld.c b/libc/elf/rtld.c
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index b93a01f..2fc83ce 100644
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--- a/libc/elf/rtld.c
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+++ b/libc/elf/rtld.c
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@@ -2277,6 +2277,7 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n",
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lnp->dont_free = 1;
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lnp = lnp->next;
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}
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+ l->l_free_initfini = 0;
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if (l != &GL(dl_rtld_map))
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_dl_relocate_object (l, l->l_scope, GLRO(dl_lazy) ? RTLD_LAZY : 0,
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diff --git a/libc/include/link.h b/libc/include/link.h
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index e877104..b1b4065 100644
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--- a/libc/include/link.h
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+++ b/libc/include/link.h
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@@ -192,6 +192,9 @@ struct link_map
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during LD_TRACE_PRELINKING=1
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contains any DT_SYMBOLIC
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libraries. */
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+ unsigned int l_free_initfini:1; /* Nonzero if l_initfini can be
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+ freed, ie. not allocated with
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+ the dummy malloc in ld.so. */
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/* Collected information about own RPATH directories. */
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struct r_search_path_struct l_rpath_dirs;
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@@ -240,9 +243,6 @@ struct link_map
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/* List of object in order of the init and fini calls. */
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struct link_map **l_initfini;
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- /* The init and fini list generated at startup, saved when the
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- object is also loaded dynamically. */
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- struct link_map **l_orig_initfini;
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/* List of the dependencies introduced through symbol binding. */
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struct link_map_reldeps
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