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Install shared objects under their ABI names, avoiding symlinks (#1652867)

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This adds patches proposed upstream to enable downgrades across
major glibc versions.

File list construction and the find-debuginfo.sh wrapper had
to be adjusted to cope with the changed file name patterns.
This commit is contained in:
Florian Weimer 2021-06-15 13:09:37 +02:00
parent 222c141c85
commit fd5c07ba69
6 changed files with 435 additions and 12 deletions
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31
glibc-nosymlink-1.patch Normal file
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@ -0,0 +1,31 @@
Patch series proposed upstream:
<https://sourceware.org/pipermail/libc-alpha/2021-June/127473.html>
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Jun 9 14:12:46 2021 +0200
nptl_db: Install libthread_db under a regular implementation name
Currently, the name is always libthread_db-1.0.so. It does not change
with the glibc version, like the other libraries.
GDB hard-codes libthread_db.so.1 (the soname), so this change does not
affect loading libthread_db.
Tested on x86_64-linux-gnu, in an environment where the nptl GDB tests
actually run.
diff --git a/nptl_db/Makefile b/nptl_db/Makefile
index ea721c1dcfce6e7b..1f79c018a1f9fe19 100644
--- a/nptl_db/Makefile
+++ b/nptl_db/Makefile
@@ -21,8 +21,6 @@ subdir := nptl_db
include ../Makeconfig
-nptl_db-version = 1.0
-
extra-libs = libthread_db
extra-libs-others := $(extra-libs)

78
glibc-nosymlink-2.patch Normal file
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@ -0,0 +1,78 @@
Patch series proposed upstream:
<https://sourceware.org/pipermail/libc-alpha/2021-June/127473.html>
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Jun 9 14:12:46 2021 +0200
Makerules: Remove lib-version, $(subdir-version)
Also clarify that the “versioned” term refers to the soname, not the glibc
version (which also ends up in the installed file name).
I verified on x86_64-linux-gnu that “make install” produces the same
files.
diff --git a/Makerules b/Makerules
index ca9885436e15784b..d3f29d0b8991efc7 100644
--- a/Makerules
+++ b/Makerules
@@ -982,22 +982,21 @@ install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
install-lib := $(filter-out %.so %_pic.a,$(install-lib))
ifeq (yes,$(build-shared))
-# Find which .so's have versions.
+# Find which .so's have a version number in their soname.
versioned := $(strip $(foreach so,$(install-lib.so),\
$(patsubst %,$(so),$($(so)-version))))
install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
-# For versioned libraries, we install three files:
+# For libraries whose soname have version numbers, we install three files:
# $(inst_libdir)/libfoo.so -- for linking, symlink or ld script
# $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME, symlink
# $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
-lib-version := $(firstword $($(subdir)-version) $(version))
install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
$(foreach L,$(install-lib.so-versioned),\
$(inst_libdir)/$L \
- $(inst_slibdir)/$(L:.so=)-$(lib-version).so \
+ $(inst_slibdir)/$(L:.so=)-$(version).so \
$(inst_slibdir)/$L$($L-version))
# Install all the unversioned shared libraries.
@@ -1125,7 +1124,6 @@ include $(o-iterator)
generated += $(foreach o,$(versioned),$o$($o-version))
-ifeq (,$($(subdir)-version))
define o-iterator-doit
$(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
$(+force);
@@ -1140,23 +1138,7 @@ $(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
endef
object-suffixes-left := $(versioned)
include $(o-iterator)
-else
-define o-iterator-doit
-$(inst_slibdir)/$o$($o-version): \
- $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
- $$(make-shlib-link)
-endef
-object-suffixes-left := $(versioned)
-include $(o-iterator)
-
-define o-iterator-doit
-$(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
- $$(do-install-program)
-endef
-object-suffixes-left := $(versioned)
-include $(o-iterator)
-endif
-endif
+endif # ifneq (,$(versioned))
define do-install-so
$(do-install-program)

129
glibc-nosymlink-3.patch Normal file
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@ -0,0 +1,129 @@
Patch series proposed upstream:
<https://sourceware.org/pipermail/libc-alpha/2021-June/127473.html>
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Jun 9 14:12:46 2021 +0200
elf: Generalize name-based DSO recognition in ldconfig
This introduces <dl-is_dso.h> and the _dl_is_dso function. A
test ensures that the official names of libc.so, ld.so, and their
versioned names are recognized.
diff --git a/elf/Makefile b/elf/Makefile
index 5c47daee12505a47..1751f5ec6772eceb 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -223,7 +223,7 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \
tst-single_threaded tst-single_threaded-pthread \
tst-tls-ie tst-tls-ie-dlmopen argv0test \
tst-glibc-hwcaps tst-glibc-hwcaps-prepend tst-glibc-hwcaps-mask \
- tst-tls20 tst-tls21 tst-dlmopen-dlerror
+ tst-tls20 tst-tls21 tst-dlmopen-dlerror tst-dl-is_dso
# reldep9
tests-internal += loadtest unload unload2 circleload1 \
neededtest neededtest2 neededtest3 neededtest4 \
diff --git a/elf/dl-is_dso.h b/elf/dl-is_dso.h
new file mode 100644
index 0000000000000000..94e00966a16e0df5
--- /dev/null
+++ b/elf/dl-is_dso.h
@@ -0,0 +1,33 @@
+/* Heuristic for recognizing DSO file names.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <stdbool.h>
+#include <string.h>
+
+/* Returns true if the file name looks like a DSO name. */
+static bool
+_dl_is_dso (const char *name)
+{
+ /* Recognize lib*.so*, ld-*.so*, ld.so.*, ld64.so.*. ld-*.so*
+ matches both platform dynamic linker names like ld-linux.so.2,
+ and versioned dynamic loader names like ld-2.12.so. */
+ return (((strncmp (name, "lib", 3) == 0 || strncmp (name, "ld-", 3) == 0)
+ && strstr (name, ".so") != NULL)
+ || strncmp (name, "ld.so.", 6) == 0
+ || strncmp (name, "ld64.so.", 8) == 0);
+}
diff --git a/elf/ldconfig.c b/elf/ldconfig.c
index 96bf7700b2efd37a..1037e8d0cf8d28b6 100644
--- a/elf/ldconfig.c
+++ b/elf/ldconfig.c
@@ -43,6 +43,7 @@
#include <ldconfig.h>
#include <dl-cache.h>
#include <dl-hwcaps.h>
+#include <dl-is_dso.h>
#include <dl-procinfo.h>
@@ -842,9 +843,7 @@ search_dir (const struct dir_entry *entry)
subdirectory (if not already processing a glibc-hwcaps
subdirectory)? The dynamic linker is also considered as
shared library. */
- if (((strncmp (direntry->d_name, "lib", 3) != 0
- && strncmp (direntry->d_name, "ld-", 3) != 0)
- || strstr (direntry->d_name, ".so") == NULL)
+ if (!_dl_is_dso (direntry->d_name)
&& (direntry->d_type == DT_REG
|| (entry->hwcaps == NULL
&& !is_hwcap_platform (direntry->d_name))))
diff --git a/elf/tst-dl-is_dso.c b/elf/tst-dl-is_dso.c
new file mode 100644
index 0000000000000000..48d2cc9fbe9edbc6
--- /dev/null
+++ b/elf/tst-dl-is_dso.c
@@ -0,0 +1,35 @@
+/* Test heuristic for recognizing DSO file names.
+ Copyright (C) 2021 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <dl-is_dso.h>
+#include <gnu/lib-names.h>
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+ /* Official ABI names. */
+ TEST_VERIFY (_dl_is_dso (LIBC_SO));
+ TEST_VERIFY (_dl_is_dso (LD_SO));
+ /* Version-based names. The version number does not matter. */
+ TEST_VERIFY (_dl_is_dso ("libc-2.12.so"));
+ TEST_VERIFY (_dl_is_dso ("ld-2.12.so"));
+ return 0;
+}
+
+#include <support/test-driver.c>

158
glibc-nosymlink-4.patch Normal file
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@ -0,0 +1,158 @@
Patch series proposed upstream:
<https://sourceware.org/pipermail/libc-alpha/2021-June/127473.html>
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Jun 9 14:12:46 2021 +0200
Install shared objects under their ABI names
Previously, the installed objects were named like libc-2.33.so,
and the ABI soname libc.so.6 was just a symbolic link.
The Makefile targets to install these symbolic links are no longer
needed after this, so they are removed with this commit. The more
general $(make-link) command (which invokes scripts/rellns-sh) is
retained because other symbolic links are still needed.
diff --git a/INSTALL b/INSTALL
index 56ed01d4386ad8b7..7f054f422d990d8a 100644
--- a/INSTALL
+++ b/INSTALL
@@ -199,6 +199,16 @@ if 'CFLAGS' is specified it must enable optimization. For example:
RELRO and a read-only global offset table (GOT), at the cost of
slightly increased program load times.
+'--disable-major-minor-libraries'
+ Do not install shared objects under file names that contain the
+ major and minor version of the GNU C Library. By default, such
+ names are used, and the names defined by the ABI are provided as
+ symbolic links only. This causes problems with certain package
+ managers during library upgrades and (in particular) downgrades, so
+ this option can be used to install these shared objects directly
+ under their ABI-defined names, without an additional indirection
+ via symbolic links.
+
'--enable-pt_chown'
The file 'pt_chown' is a helper binary for 'grantpt' (*note
Pseudo-Terminals: Allocation.) that is installed setuid root to fix
diff --git a/Makefile b/Makefile
index 242d36de914c516f..c115c652a0b8c1ce 100644
--- a/Makefile
+++ b/Makefile
@@ -109,12 +109,6 @@ elf/ldso_install:
# Ignore the error if we cannot update /etc/ld.so.cache.
ifeq (no,$(cross-compiling))
ifeq (yes,$(build-shared))
-install: install-symbolic-link
-.PHONY: install-symbolic-link
-install-symbolic-link: subdir_install
- $(symbolic-link-prog) $(symbolic-link-list)
- rm -f $(symbolic-link-list)
-
install:
-test ! -x $(elf-objpfx)ldconfig || LC_ALL=C \
$(elf-objpfx)ldconfig $(addprefix -r ,$(install_root)) \
diff --git a/Makerules b/Makerules
index d3f29d0b8991efc7..6efff78fbe44bdca 100644
--- a/Makerules
+++ b/Makerules
@@ -989,14 +989,12 @@ versioned := $(strip $(foreach so,$(install-lib.so),\
install-lib.so-versioned := $(filter $(versioned), $(install-lib.so))
install-lib.so-unversioned := $(filter-out $(versioned), $(install-lib.so))
-# For libraries whose soname have version numbers, we install three files:
+# For libraries whose soname have version numbers, we install two files:
# $(inst_libdir)/libfoo.so -- for linking, symlink or ld script
-# $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME, symlink
-# $(inst_slibdir)/libfoo-X.Y.Z.so -- the real shared object file
+# $(inst_slibdir)/libfoo.so.NN -- for loading by SONAME
install-lib-nosubdir: $(install-lib.so-unversioned:%=$(inst_slibdir)/%) \
$(foreach L,$(install-lib.so-versioned),\
$(inst_libdir)/$L \
- $(inst_slibdir)/$(L:.so=)-$(version).so \
$(inst_slibdir)/$L$($L-version))
# Install all the unversioned shared libraries.
@@ -1029,35 +1027,10 @@ ln -f $(objpfx)/$(@F) $@
endef
endif
-ifeq (yes,$(build-shared))
-ifeq (no,$(cross-compiling))
-symbolic-link-prog := $(elf-objpfx)sln
-symbolic-link-list := $(elf-objpfx)symlink.list
-define make-shlib-link
-echo `$(..)scripts/rellns-sh -p $< $@` $@ >> $(symbolic-link-list)
-endef
-else # cross-compiling
-# We need a definition that can be used by elf/Makefile's install rules.
-symbolic-link-prog = $(LN_S)
-endif
-endif
-ifndef make-shlib-link
-define make-shlib-link
-rm -f $@
-$(LN_S) `$(..)scripts/rellns-sh -p $< $@` $@
-endef
-endif
-
ifdef libc.so-version
-# For a library specified to be version N, install three files:
-# libc.so -> libc.so.N (e.g. libc.so.6)
-# libc.so.6 -> libc-VERSION.so (e.g. libc-1.10.so)
-
-$(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
- $(+force)
- $(make-shlib-link)
-$(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
+$(inst_slibdir)/libc.so$(libc.so-version): $(common-objpfx)libc.so $(+force)
$(do-install-program)
+
install: $(inst_slibdir)/libc.so$(libc.so-version)
# This fragment of linker script gives the OUTPUT_FORMAT statement
@@ -1125,15 +1098,7 @@ include $(o-iterator)
generated += $(foreach o,$(versioned),$o$($o-version))
define o-iterator-doit
-$(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
- $(+force);
- $$(make-shlib-link)
-endef
-object-suffixes-left := $(versioned)
-include $(o-iterator)
-
-define o-iterator-doit
-$(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
+$(inst_slibdir)/$o$($o-version): $(objpfx)$o $(+force);
$$(do-install-program)
endef
object-suffixes-left := $(versioned)
diff --git a/elf/Makefile b/elf/Makefile
index 1751f5ec6772eceb..02f634c19241949f 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -628,20 +628,14 @@ $(objpfx)trusted-dirs.st: Makefile $(..)Makeconfig
CPPFLAGS-dl-load.c += -I$(objpfx). -I$(csu-objpfx).
ifeq (yes,$(build-shared))
-$(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
+$(inst_rtlddir)/$(rtld-installed-name): $(objpfx)ld.so $(+force)
$(make-target-directory)
$(do-install-program)
-$(inst_rtlddir)/$(rtld-installed-name): \
- $(inst_slibdir)/$(rtld-version-installed-name) \
- $(inst_slibdir)/libc-$(version).so
- $(make-target-directory)
- $(make-shlib-link)
-
# Special target called by parent to install just the dynamic linker.
.PHONY: ldso_install
ldso_install: $(inst_rtlddir)/$(rtld-installed-name)
-endif
+endif # $(build-shared)
# Workarounds for ${exec_prefix} expansion in configure variables.

30
glibc.spec
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@ -97,7 +97,7 @@
Summary: The GNU libc libraries Summary: The GNU libc libraries
Name: glibc Name: glibc
Version: %{glibcversion} Version: %{glibcversion}
Release: 14%{?dist} Release: 15%{?dist}
# In general, GPLv2+ is used by programs, LGPLv2+ is used for # In general, GPLv2+ is used by programs, LGPLv2+ is used for
# libraries. # libraries.
@ -141,13 +141,13 @@ Source12: ChangeLog.old
# the definition of __debug_install_post. # the definition of __debug_install_post.
%{lua: %{lua:
local wrapper = rpm.expand("%{SOURCE10}") local wrapper = rpm.expand("%{SOURCE10}")
local ldso = rpm.expand("%{glibc_sysroot}/%{_lib}/ld-%{VERSION}.so") local sysroot = rpm.expand("%{glibc_sysroot}")
local original = rpm.expand("%{macrobody:__debug_install_post}") local original = rpm.expand("%{macrobody:__debug_install_post}")
-- Strip leading newline. It confuses the macro redefinition. -- Strip leading newline. It confuses the macro redefinition.
-- Avoid embedded newlines that confuse the macro definition. -- Avoid embedded newlines that confuse the macro definition.
original = original:match("^%s*(.-)%s*$"):gsub("\\\n", "") original = original:match("^%s*(.-)%s*$"):gsub("\\\n", "")
rpm.define("__debug_install_post bash " .. wrapper rpm.define("__debug_install_post bash " .. wrapper
.. " " .. ldso .. " " .. original) .. " " .. sysroot .. " " .. original)
} }
############################################################################## ##############################################################################
@ -171,6 +171,10 @@ Patch30: glibc-deprecated-selinux-makedb.patch
Patch31: glibc-deprecated-selinux-nscd.patch Patch31: glibc-deprecated-selinux-nscd.patch
Patch32: glibc-gconv-modules-revert.patch Patch32: glibc-gconv-modules-revert.patch
Patch33: glibc-rh697421.patch Patch33: glibc-rh697421.patch
Patch34: glibc-nosymlink-1.patch
Patch35: glibc-nosymlink-2.patch
Patch36: glibc-nosymlink-3.patch
Patch37: glibc-nosymlink-4.patch
############################################################################## ##############################################################################
# Continued list of core "glibc" package information: # Continued list of core "glibc" package information:
@ -1759,7 +1763,7 @@ EOF
# Move the NSS-related files to the NSS subpackages. Be careful not # Move the NSS-related files to the NSS subpackages. Be careful not
# to pick up .debug files, and the -devel symbolic links. # to pick up .debug files, and the -devel symbolic links.
for module in db hesiod; do for module in db hesiod; do
grep -E "/libnss_$module(\.so\.[0-9.]+|-[0-9.]+\.so)$" \ grep -E "/libnss_$module\\.so\\.[0-9.]+\$" \
master.filelist > nss_$module.filelist master.filelist > nss_$module.filelist
done done
grep -E "%{_prefix}/bin/makedb$" master.filelist >> nss_db.filelist grep -E "%{_prefix}/bin/makedb$" master.filelist >> nss_db.filelist
@ -1777,7 +1781,7 @@ grep '/libnss_[a-z]*\.so$' master.filelist > nss-devel.filelist
############################################################################### ###############################################################################
# Prepare the libnsl-related file lists. # Prepare the libnsl-related file lists.
grep '/libnsl-[0-9.]*.so$' master.filelist > libnsl.filelist grep -E '/libnsl\.so\.[0-9]+$' master.filelist > libnsl.filelist
test $(wc -l < libnsl.filelist) -eq 1 test $(wc -l < libnsl.filelist) -eq 1
%if %{with benchtests} %if %{with benchtests}
@ -1870,8 +1874,10 @@ echo ====================PLT RELOCS END==================
# Obtain a way to run the dynamic loader. Avoid matching the symbolic # Obtain a way to run the dynamic loader. Avoid matching the symbolic
# link and then pick the first loader (although there should be only # link and then pick the first loader (although there should be only
# one). # one). See wrap-find-debuginfo.sh.
run_ldso="$(find %{glibc_sysroot}/%{_lib}/ld-*.so -type f | LC_ALL=C sort | head -n1) --library-path %{glibc_sysroot}/%{_lib}" ldso_path="$(find %{glibc_sysroot}/ -regextype posix-extended \
-regex '.*/ld(-.*|64|)\.so\.[0-9]+$' -type f | LC_ALL=C sort | head -n1)"
run_ldso="$ldso_path --library-path %{glibc_sysroot}/%{_lib}"
# Show the auxiliary vector as seen by the new library # Show the auxiliary vector as seen by the new library
# (even if we do not perform the valgrind test). # (even if we do not perform the valgrind test).
@ -1937,12 +1943,17 @@ install_libs = { "anl", "BrokenLocale", "c", "dl", "m", "mvec",
-- We are going to remove these libraries. Generally speaking we remove -- We are going to remove these libraries. Generally speaking we remove
-- all core libraries in the multilib directory. -- all core libraries in the multilib directory.
-- We employ a tight match where X.Y is in [2.0,9.9*], so we would -- For the versioned install names, the version are [2.0,9.9*], so we
-- match "libc-2.0.so" and so on up to "libc-9.9*". -- match "libc-2.0.so" and so on up to "libc-9.9*".
-- For the unversioned install names, we match the library plus ".so."
-- followed by digests.
remove_regexps = {} remove_regexps = {}
for i = 1, #install_libs do for i = 1, #install_libs do
-- Versioned install name.
remove_regexps[i] = ("lib" .. install_libs[i] remove_regexps[i] = ("lib" .. install_libs[i]
.. "%%-[2-9]%%.[0-9]+%%.so$") .. "%%-[2-9]%%.[0-9]+%%.so$")
-- Unversioned install name.
remove_regexps[i] = ("lib" .. install_libs[i] .. "%%.so%.[0-9]+$")
end end
-- Two exceptions: -- Two exceptions:
@ -2175,6 +2186,9 @@ fi
%files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
%changelog %changelog
* Tue Jun 15 2021 Florian Weimer <fweimer@redhat.com> - 2.33.9000-15
- Install shared objects under their ABI names, avoiding symlinks (#1652867)
* Mon Jun 14 2021 Siddhesh Poyarekar <siddhesh@redhat.com> - 2.33.9000-14 * Mon Jun 14 2021 Siddhesh Poyarekar <siddhesh@redhat.com> - 2.33.9000-14
- Add a conditional dependency for glibc-gconv-extra.i686 in x86_64. - Add a conditional dependency for glibc-gconv-extra.i686 in x86_64.

21
wrap-find-debuginfo.sh
View File

@ -2,11 +2,12 @@
# Wrapper script for find-debuginfo.sh # Wrapper script for find-debuginfo.sh
# #
# Usage: # Usage:
# wrap-find-debuginfo.sh LDSO-PATH SCRIPT-PATH SCRIPT-ARGS... # wrap-find-debuginfo.sh SYSROOT-PATH SCRIPT-PATH SCRIPT-ARGS...
# #
# The wrapper saves the original versions of the file at LDSO-PATH, # The wrapper saves the original version of ld.so found in SYSROOT-PATH,
# invokes SCRIPT-PATH with SCRIPT-ARGS, and then restores the # invokes SCRIPT-PATH with SCRIPT-ARGS, and then restores the
# LDSO-PATH file. As a result, LDSO-PATH has unchanged debuginfo even # LDSO-PATH file, followed by note merging and DWZ compression.
# As a result, ld.so has (mostly) unchanged debuginfo even
# after debuginfo extraction. # after debuginfo extraction.
set -ex set -ex
@ -25,11 +26,23 @@ cleanup () {
} }
trap cleanup 0 trap cleanup 0
ldso_path="$1" sysroot_path="$1"
shift shift
script_path="$1" script_path="$1"
shift shift
# See ldso_path setting in glibc.spec.
ldso_path=
for ldso_candidate in `find "$sysroot_path" -regextype posix-extended \
-regex '.*/ld(-.*|64|)\.so\.[0-9]+$' -type f` ; do
if test -z "$ldso_path" ; then
ldso_path="$ldso_candidate"
else
echo "error: multiple ld.so candidates: $ldso_path, $ldso_candidate"
exit 1
fi
done
# Preserve the original file. # Preserve the original file.
cp "$ldso_path" "$ldso_tmp" cp "$ldso_path" "$ldso_tmp"