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Short description: Cleanup use of _dl_starting_up.
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Author(s): Fedora glibc team <glibc@lists.fedoraproject.org>
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Origin: PATCH
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Upstream status: https://sourceware.org/ml/libc-alpha/2014-02/msg00589.html
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Upstream discussions:
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https://sourceware.org/ml/libc-alpha/2014-02/msg00580.html
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Based on the following commit:
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~~~
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From 16552c01a66633c9e412984d9d92616bd4e5303c Mon Sep 17 00:00:00 2001
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From: Andreas Schwab <schwab@redhat.com>
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Date: Fri, 11 Jun 2010 11:04:11 +0200
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Subject: [PATCH] Properly set __libc_multiple_libcs
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* elf/rtld.c (_dl_starting_up): Always define.
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(dl_main): Always set _dl_starting_up.
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* elf/dl-support.c (_dl_starting_up): Always define.
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* elf/dl-init.c (_dl_init): Always clear _dl_starting_up.
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---
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ChangeLog | 7 +++++++
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elf/dl-init.c | 4 ----
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elf/dl-support.c | 2 --
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elf/rtld.c | 4 ----
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4 files changed, 7 insertions(+), 10 deletions(-)
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~~~
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This patch needs to go upstream to get cleaned up, but has always involed
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analysis of the GNU/Hurd parts of the change and that stalled out, but
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perhaps with build-many-glibcs we can now test these changes more easily.
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Index: b/elf/dl-init.c
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===================================================================
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--- a/elf/dl-init.c
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+++ b/elf/dl-init.c
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@@ -119,8 +119,6 @@ _dl_init (struct link_map *main_map, int
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while (i-- > 0)
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call_init (main_map->l_initfini[i], argc, argv, env);
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-#ifndef HAVE_INLINED_SYSCALLS
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/* Finished starting up. */
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_dl_starting_up = 0;
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-#endif
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}
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Index: b/elf/dl-support.c
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===================================================================
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--- a/elf/dl-support.c
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+++ b/elf/dl-support.c
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@@ -117,10 +117,8 @@ struct r_scope_elem _dl_initial_searchli
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.r_nlist = 1,
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};
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-#ifndef HAVE_INLINED_SYSCALLS
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/* Nonzero during startup. */
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int _dl_starting_up = 1;
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-#endif
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/* Random data provided by the kernel. */
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void *_dl_random;
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Index: b/elf/rtld.c
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===================================================================
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--- a/elf/rtld.c
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+++ b/elf/rtld.c
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@@ -214,7 +214,6 @@ audit_list_iter_next (struct audit_list_
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return iter->previous->name;
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}
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-#ifndef HAVE_INLINED_SYSCALLS
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/* Set nonzero during loading and initialization of executable and
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libraries, cleared before the executable's entry point runs. This
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must not be initialized to nonzero, because the unused dynamic
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@@ -224,7 +223,6 @@ audit_list_iter_next (struct audit_list_
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never be called. */
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int _dl_starting_up = 0;
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rtld_hidden_def (_dl_starting_up)
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-#endif
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/* This is the structure which defines all variables global to ld.so
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(except those which cannot be added for some reason). */
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@@ -898,10 +896,8 @@ dl_main (const ElfW(Phdr) *phdr,
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/* Process the environment variable which control the behaviour. */
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process_envvars (&mode);
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-#ifndef HAVE_INLINED_SYSCALLS
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/* Set up a flag which tells we are just starting. */
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_dl_starting_up = 1;
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-#endif
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if (*user_entry == (ElfW(Addr)) ENTRY_POINT)
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{
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