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[Bug dynamic-link/15022] Global-scope dlopen issues in static executables
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 31 Jan 2014 18:03:26 +0000
- Subject: [Bug dynamic-link/15022] Global-scope dlopen issues in static executables
- Auto-submitted: auto-generated
- References: <bug-15022-131 at http dot sourceware dot org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=15022
--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0d23a5c1b1908700d25b7e3c6cece148e19dded4
commit 0d23a5c1b1908700d25b7e3c6cece148e19dded4
Author: Maciej W. Rozycki <macro@codesourcery.com>
Date: Fri Jan 31 17:51:31 2014 +0000
[BZ #16046] Static dlopen correction fallout fixes.
Fixes to address issues from BZ #15022 resolution, as follows:
* TLS updates to csu/libc-tls.c -- we now have a proper main map, so
there's no longer a need to create a separate fake one to keep TLS
structures,
* random updates to elf/dl-close.c -- LM_ID_BASE is now a valid name
space ID for static executables as well, so assert that we don't
unload the main map. Similarly dl_nns isn't supposed to be 0 for
static executables anymore,
* actual BZ #16046 fix to elf/dl-iteratephdr.c -- the dl_iterate_phdr
special function for static executables isn't needed anymore, provided
that l_phdr and l_phnum members of the main map have been properly
initialized (done in _dl_non_dynamic_init in elf/dl-support.c now),
* ld.so.cache loader update to elf/dl-load.c --
GL(dl_ns)[LM_ID_BASE]._ns_loaded is now always initialized in static
executables so can become the fallback loader map to check for
DF_1_NODEFLIB, provided that the l_flags_1 member of the main map has
been properly initialized (done in elf/dl-support.c now); this also
ensures previous semantics elsewhere in elf/dl-load.c,
* matching updates to elf/dl-support.c -- to complement the two fixes
above.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 16 ++++++++++++++++
NEWS | 14 +++++++-------
csu/libc-tls.c | 27 ++++++++++++---------------
elf/dl-close.c | 10 +---------
elf/dl-iteratephdr.c | 30 ------------------------------
elf/dl-load.c | 14 ++++----------
elf/dl-support.c | 3 +++
7 files changed, 43 insertions(+), 71 deletions(-)
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