ec9d16b904
Release notes: https://sourceware.org/pipermail/binutils/2023-July/128719.html Copied patches from version 2.40. Build-tested using these four defconfigs: ---------- BR2_arceb=y ---------- BR2_BINUTILS_VERSION_2_39_X=y ---------- (empty defconfig meaning binutils-2.40) ---------- BR2_BINUTILS_VERSION_2_41_X=y ---------- each using these commands: $ make host-libiberty $ make host-binutils Signed-off-by: Bernd Kuhls <bernd@kuhls.net> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
310 lines
11 KiB
Diff
310 lines
11 KiB
Diff
From a6d90a842e349545ceb27f022317618dd99378ce Mon Sep 17 00:00:00 2001
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From: Romain Naour <romain.naour@gmail.com>
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Date: Fri, 25 Dec 2015 11:45:38 +0100
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Subject: [PATCH] poison-system-directories
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Patch adapted to binutils 2.23.2 and extended to use
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BR_COMPILER_PARANOID_UNSAFE_PATH by Thomas Petazzoni.
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[Waldemar: rebase on top of 2.39]
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Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
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[Romain: rebase on top of 2.33.1]
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Signed-off-by: Romain Naour <romain.naour@gmail.com>
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[Gustavo: adapt to binutils 2.25]
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
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Upstream-Status: Inappropriate [distribution: codesourcery]
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Upstream: N/A [Buildroot specific]
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Patch originally created by Mark Hatle, forward-ported to
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binutils 2.21 by Scott Garman.
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purpose: warn for uses of system directories when cross linking
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Code Merged from Sourcery G++ binutils 2.19 - 4.4-277
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2008-07-02 Joseph Myers <joseph@codesourcery.com>
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ld/
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* ld.h (args_type): Add error_poison_system_directories.
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* ld.texinfo (--error-poison-system-directories): Document.
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* ldfile.c (ldfile_add_library_path): Check
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command_line.error_poison_system_directories.
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* ldmain.c (main): Initialize
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command_line.error_poison_system_directories.
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* lexsup.c (enum option_values): Add
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OPTION_ERROR_POISON_SYSTEM_DIRECTORIES.
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(ld_options): Add --error-poison-system-directories.
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(parse_args): Handle new option.
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2007-06-13 Joseph Myers <joseph@codesourcery.com>
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ld/
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* config.in: Regenerate.
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* ld.h (args_type): Add poison_system_directories.
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* ld.texinfo (--no-poison-system-directories): Document.
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* ldfile.c (ldfile_add_library_path): Check
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command_line.poison_system_directories.
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* ldmain.c (main): Initialize
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command_line.poison_system_directories.
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* lexsup.c (enum option_values): Add
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OPTION_NO_POISON_SYSTEM_DIRECTORIES.
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(ld_options): Add --no-poison-system-directories.
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(parse_args): Handle new option.
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2007-04-20 Joseph Myers <joseph@codesourcery.com>
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Merge from Sourcery G++ binutils 2.17:
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2007-03-20 Joseph Myers <joseph@codesourcery.com>
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Based on patch by Mark Hatle <mark.hatle@windriver.com>.
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ld/
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* configure.ac (--enable-poison-system-directories): New option.
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* configure, config.in: Regenerate.
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* ldfile.c (ldfile_add_library_path): If
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ENABLE_POISON_SYSTEM_DIRECTORIES defined, warn for use of /lib,
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/usr/lib, /usr/local/lib or /usr/X11R6/lib.
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Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
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Signed-off-by: Scott Garman <scott.a.garman@intel.com>
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---
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ld/config.in | 3 +++
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ld/configure | 14 ++++++++++++++
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ld/configure.ac | 10 ++++++++++
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ld/ld.h | 8 ++++++++
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ld/ld.texi | 12 ++++++++++++
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ld/ldfile.c | 17 +++++++++++++++++
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ld/ldlex.h | 2 ++
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ld/ldmain.c | 2 ++
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ld/lexsup.c | 21 +++++++++++++++++++++
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9 files changed, 89 insertions(+)
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diff --git a/ld/config.in b/ld/config.in
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index ad0dc6a106c..d21edaddce7 100644
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--- a/ld/config.in
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+++ b/ld/config.in
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@@ -58,6 +58,9 @@
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language is requested. */
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#undef ENABLE_NLS
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+/* Define to warn for use of native system library directories */
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+#undef ENABLE_POISON_SYSTEM_DIRECTORIES
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+
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/* Additional extension a shared object might have. */
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#undef EXTRA_SHLIB_EXTENSION
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diff --git a/ld/configure b/ld/configure
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index 43b44be1dc6..28f054ea3f8 100755
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--- a/ld/configure
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+++ b/ld/configure
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@@ -839,6 +839,7 @@ with_lib_path
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enable_targets
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enable_64_bit_bfd
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with_sysroot
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+enable_poison_system_directories
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enable_gold
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enable_got
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enable_compressed_debug_sections
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@@ -1521,6 +1522,8 @@ Optional Features:
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--enable-checking enable run-time checks
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--enable-targets alternative target configurations
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--enable-64-bit-bfd 64-bit support (on hosts with narrower word sizes)
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+ --enable-poison-system-directories
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+ warn for use of native system library directories
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--enable-gold[=ARG] build gold [ARG={default,yes,no}]
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--enable-got=<type> GOT handling scheme (target, single, negative,
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multigot)
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@@ -15504,7 +15507,18 @@ else
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fi
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+# Check whether --enable-poison-system-directories was given.
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+if test "${enable_poison_system_directories+set}" = set; then :
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+ enableval=$enable_poison_system_directories;
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+else
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+ enable_poison_system_directories=no
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+fi
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+
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+if test "x${enable_poison_system_directories}" = "xyes"; then
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+$as_echo "#define ENABLE_POISON_SYSTEM_DIRECTORIES 1" >>confdefs.h
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+
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+fi
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# Check whether --enable-got was given.
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if test "${enable_got+set}" = set; then :
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diff --git a/ld/configure.ac b/ld/configure.ac
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index 77edac3258c..a74dac63038 100644
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--- a/ld/configure.ac
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+++ b/ld/configure.ac
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@@ -103,6 +103,16 @@ AC_SUBST(use_sysroot)
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AC_SUBST(TARGET_SYSTEM_ROOT)
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AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
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+AC_ARG_ENABLE([poison-system-directories],
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+ AS_HELP_STRING([--enable-poison-system-directories],
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+ [warn for use of native system library directories]),,
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+ [enable_poison_system_directories=no])
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+if test "x${enable_poison_system_directories}" = "xyes"; then
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+ AC_DEFINE([ENABLE_POISON_SYSTEM_DIRECTORIES],
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+ [1],
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+ [Define to warn for use of native system library directories])
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+fi
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+
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dnl Use --enable-gold to decide if this linker should be the default.
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dnl "install_as_default" is set to false if gold is the default linker.
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dnl "installed_linker" is the installed BFD linker name.
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diff --git a/ld/ld.h b/ld/ld.h
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index 05649ff61b8..1818c227473 100644
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--- a/ld/ld.h
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+++ b/ld/ld.h
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@@ -163,6 +163,14 @@ typedef struct
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in the linker script. */
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bool force_group_allocation;
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+ /* If TRUE (the default) warn for uses of system directories when
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+ cross linking. */
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+ bool poison_system_directories;
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+
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+ /* If TRUE (default FALSE) give an error for uses of system
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+ directories when cross linking instead of a warning. */
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+ bool error_poison_system_directories;
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+
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/* Big or little endian as set on command line. */
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enum endian_enum endian;
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diff --git a/ld/ld.texi b/ld/ld.texi
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index db3a9f09b45..9dacc934f80 100644
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--- a/ld/ld.texi
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+++ b/ld/ld.texi
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@@ -2949,6 +2949,18 @@ string identifying the original linked file does not change.
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Passing @code{none} for @var{style} disables the setting from any
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@code{--build-id} options earlier on the command line.
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+@kindex --no-poison-system-directories
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+@item --no-poison-system-directories
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+Do not warn for @option{-L} options using system directories such as
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+@file{/usr/lib} when cross linking. This option is intended for use
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+in chroot environments when such directories contain the correct
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+libraries for the target system rather than the host.
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+
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+@kindex --error-poison-system-directories
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+@item --error-poison-system-directories
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+Give an error instead of a warning for @option{-L} options using
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+system directories when cross linking.
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+
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@kindex --package-metadata=@var{JSON}
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@item --package-metadata=@var{JSON}
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Request the creation of a @code{.note.package} ELF note section. The
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diff --git a/ld/ldfile.c b/ld/ldfile.c
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index b8fd4e5d8e0..1f1d8e23bc9 100644
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--- a/ld/ldfile.c
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+++ b/ld/ldfile.c
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@@ -117,6 +117,23 @@ ldfile_add_library_path (const char *name, bool cmdline)
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new_dirs->name = concat (ld_sysroot, name + strlen ("$SYSROOT"), (const char *) NULL);
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else
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new_dirs->name = xstrdup (name);
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+
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+#ifdef ENABLE_POISON_SYSTEM_DIRECTORIES
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+ if (command_line.poison_system_directories
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+ && ((!strncmp (name, "/lib", 4))
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+ || (!strncmp (name, "/usr/lib", 8))
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+ || (!strncmp (name, "/usr/local/lib", 14))
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+ || (!strncmp (name, "/usr/X11R6/lib", 14))))
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+ {
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+ if (command_line.error_poison_system_directories)
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+ einfo (_("%X%P: error: library search path \"%s\" is unsafe for "
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+ "cross-compilation\n"), name);
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+ else
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+ einfo (_("%P: warning: library search path \"%s\" is unsafe for "
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+ "cross-compilation\n"), name);
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+ }
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+#endif
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+
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}
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/* Try to open a BFD for a lang_input_statement. */
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diff --git a/ld/ldlex.h b/ld/ldlex.h
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index 0538f0a06a1..d1de3aec23d 100644
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--- a/ld/ldlex.h
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+++ b/ld/ldlex.h
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@@ -166,6 +166,8 @@ enum option_values
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OPTION_CTF_VARIABLES,
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OPTION_NO_CTF_VARIABLES,
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OPTION_CTF_SHARE_TYPES,
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+ OPTION_NO_POISON_SYSTEM_DIRECTORIES,
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+ OPTION_ERROR_POISON_SYSTEM_DIRECTORIES,
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OPTION_WARN_EXECSTACK,
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OPTION_NO_WARN_EXECSTACK,
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OPTION_WARN_RWX_SEGMENTS,
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diff --git a/ld/ldmain.c b/ld/ldmain.c
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index 9290a189b0d..e2e3074e872 100644
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--- a/ld/ldmain.c
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+++ b/ld/ldmain.c
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@@ -321,6 +321,8 @@ main (int argc, char **argv)
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command_line.warn_mismatch = true;
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command_line.warn_search_mismatch = true;
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command_line.check_section_addresses = -1;
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+ command_line.poison_system_directories = true;
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+ command_line.error_poison_system_directories = false;
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/* We initialize DEMANGLING based on the environment variable
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COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the
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diff --git a/ld/lexsup.c b/ld/lexsup.c
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index c5960385572..da0a7829914 100644
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--- a/ld/lexsup.c
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+++ b/ld/lexsup.c
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@@ -613,6 +613,14 @@ static const struct ld_option ld_options[] =
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" <method> is: share-unconflicted (default),\n"
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" share-duplicated"),
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TWO_DASHES },
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+ { {"no-poison-system-directories", no_argument, NULL,
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+ OPTION_NO_POISON_SYSTEM_DIRECTORIES},
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+ '\0', NULL, N_("Do not warn for -L options using system directories"),
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+ TWO_DASHES },
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+ { {"error-poison-system-directories", no_argument, NULL,
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+ OPTION_ERROR_POISON_SYSTEM_DIRECTORIES},
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+ '\0', NULL, N_("Give an error for -L options using system directories"),
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+ TWO_DASHES },
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};
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#define OPTION_COUNT ARRAY_SIZE (ld_options)
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@@ -625,6 +633,7 @@ parse_args (unsigned argc, char **argv)
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int ingroup = 0;
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char *default_dirlist = NULL;
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char *shortopts;
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+ char *BR_paranoid_env;
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struct option *longopts;
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struct option *really_longopts;
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int last_optind;
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@@ -1692,6 +1701,14 @@ parse_args (unsigned argc, char **argv)
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}
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break;
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+ case OPTION_NO_POISON_SYSTEM_DIRECTORIES:
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+ command_line.poison_system_directories = false;
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+ break;
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+
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+ case OPTION_ERROR_POISON_SYSTEM_DIRECTORIES:
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+ command_line.error_poison_system_directories = true;
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+ break;
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+
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case OPTION_PUSH_STATE:
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input_flags.pushed = xmemdup (&input_flags,
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sizeof (input_flags),
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@@ -1837,6 +1854,10 @@ parse_args (unsigned argc, char **argv)
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command_line.soname = NULL;
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}
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+ BR_paranoid_env = getenv("BR_COMPILER_PARANOID_UNSAFE_PATH");
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+ if (BR_paranoid_env && strlen(BR_paranoid_env) > 0)
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+ command_line.error_poison_system_directories = true;
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+
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while (ingroup)
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{
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einfo (_("%P: missing --end-group; added as last command line option\n"));
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--
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2.40.1
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