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authorGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2014-12-10 23:53:50 +0100
committerGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2014-12-11 00:05:52 +0100
commit43609b30e9945fa860530c301e2ae2c8a768ce94 (patch)
tree5358f0b07543981a2f6ca23a754aac902080d048
parentdf8dcbcd81fbcf78663be316cb612e6cd5601ea3 (diff)
downloadbuildroot-43609b30e9945fa860530c301e2ae2c8a768ce94.tar.gz
buildroot-43609b30e9945fa860530c301e2ae2c8a768ce94.tar.bz2
binutils/arc-2014.08: add patch to warn about unsafe library paths
This commit adds a patch to binutils borrowed from CodeSourcery/Yocto that warns about unsafe library paths (i.e /usr/lib, /usr/local/lib, etc.). The patch was adapted to binutils arc-2014.08, and modified to support the BR_COMPILER_PARANOID_UNSAFE_PATH environment variable to error out instead of just warn when unsafe paths are used. Even though erroring out can be chosen by passing --error-poison-system-directories, we are not sure this option in LDFLAGS will always be passed, so having an environment variable guarantees it will always be passed, and also allows to have an identical behavior to the external toolchain wrapper. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Tested-by: Romain Naour <romain.naour@openwide.fr>
-rw-r--r--package/binutils/arc-2014.08/600-poison-system-directories.patch279
1 files changed, 279 insertions, 0 deletions
diff --git a/package/binutils/arc-2014.08/600-poison-system-directories.patch b/package/binutils/arc-2014.08/600-poison-system-directories.patch
new file mode 100644
index 0000000000..8a3bdc647c
--- /dev/null
+++ b/package/binutils/arc-2014.08/600-poison-system-directories.patch
@@ -0,0 +1,279 @@
+Patch adapted to binutils arc-4.8-R3 and extended to use
+BR_COMPILER_PARANOID_UNSAFE_PATH by Thomas Petazzoni.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+
+Upstream-Status: Inappropriate [distribution: codesourcery]
+
+Patch originally created by Mark Hatle, forward-ported to
+binutils 2.21 by Scott Garman.
+
+purpose: warn for uses of system directories when cross linking
+
+Code Merged from Sourcery G++ binutils 2.19 - 4.4-277
+
+2008-07-02 Joseph Myers <joseph@codesourcery.com>
+
+ ld/
+ * ld.h (args_type): Add error_poison_system_directories.
+ * ld.texinfo (--error-poison-system-directories): Document.
+ * ldfile.c (ldfile_add_library_path): Check
+ command_line.error_poison_system_directories.
+ * ldmain.c (main): Initialize
+ command_line.error_poison_system_directories.
+ * lexsup.c (enum option_values): Add
+ OPTION_ERROR_POISON_SYSTEM_DIRECTORIES.
+ (ld_options): Add --error-poison-system-directories.
+ (parse_args): Handle new option.
+
+2007-06-13 Joseph Myers <joseph@codesourcery.com>
+
+ ld/
+ * config.in: Regenerate.
+ * ld.h (args_type): Add poison_system_directories.
+ * ld.texinfo (--no-poison-system-directories): Document.
+ * ldfile.c (ldfile_add_library_path): Check
+ command_line.poison_system_directories.
+ * ldmain.c (main): Initialize
+ command_line.poison_system_directories.
+ * lexsup.c (enum option_values): Add
+ OPTION_NO_POISON_SYSTEM_DIRECTORIES.
+ (ld_options): Add --no-poison-system-directories.
+ (parse_args): Handle new option.
+
+2007-04-20 Joseph Myers <joseph@codesourcery.com>
+
+ Merge from Sourcery G++ binutils 2.17:
+
+ 2007-03-20 Joseph Myers <joseph@codesourcery.com>
+ Based on patch by Mark Hatle <mark.hatle@windriver.com>.
+ ld/
+ * configure.in (--enable-poison-system-directories): New option.
+ * configure, config.in: Regenerate.
+ * ldfile.c (ldfile_add_library_path): If
+ ENABLE_POISON_SYSTEM_DIRECTORIES defined, warn for use of /lib,
+ /usr/lib, /usr/local/lib or /usr/X11R6/lib.
+
+Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
+Signed-off-by: Scott Garman <scott.a.garman@intel.com>
+
+Index: b/ld/config.in
+===================================================================
+--- a/ld/config.in
++++ b/ld/config.in
+@@ -11,6 +11,9 @@
+ language is requested. */
+ #undef ENABLE_NLS
+
++/* Define to warn for use of native system library directories */
++#undef ENABLE_POISON_SYSTEM_DIRECTORIES
++
+ /* Additional extension a shared object might have. */
+ #undef EXTRA_SHLIB_EXTENSION
+
+Index: b/ld/configure
+===================================================================
+--- a/ld/configure
++++ b/ld/configure
+@@ -773,6 +773,7 @@
+ enable_targets
+ enable_64_bit_bfd
+ with_sysroot
++enable_poison_system_directories
+ enable_gold
+ enable_got
+ enable_werror
+@@ -1428,6 +1429,8 @@
+ (and sometimes confusing) to the casual installer
+ --enable-targets alternative target configurations
+ --enable-64-bit-bfd 64-bit support (on hosts with narrower word sizes)
++ --enable-poison-system-directories
++ warn for use of native system library directories
+ --enable-gold[=ARG] build gold [ARG={default,yes,no}]
+ --enable-got=<type> GOT handling scheme (target, single, negative,
+ multigot)
+@@ -4338,7 +4341,18 @@
+ fi
+
+
++# Check whether --enable-poison-system-directories was given.
++if test "${enable_poison_system_directories+set}" = set; then :
++ enableval=$enable_poison_system_directories;
++else
++ enable_poison_system_directories=no
++fi
++
++if test "x${enable_poison_system_directories}" = "xyes"; then
+
++$as_echo "#define ENABLE_POISON_SYSTEM_DIRECTORIES 1" >>confdefs.h
++
++fi
+
+ # Check whether --enable-got was given.
+ if test "${enable_got+set}" = set; then :
+Index: b/ld/configure.in
+===================================================================
+--- a/ld/configure.in
++++ b/ld/configure.in
+@@ -70,6 +70,16 @@
+ AC_SUBST(TARGET_SYSTEM_ROOT)
+ AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
+
++AC_ARG_ENABLE([poison-system-directories],
++ AS_HELP_STRING([--enable-poison-system-directories],
++ [warn for use of native system library directories]),,
++ [enable_poison_system_directories=no])
++if test "x${enable_poison_system_directories}" = "xyes"; then
++ AC_DEFINE([ENABLE_POISON_SYSTEM_DIRECTORIES],
++ [1],
++ [Define to warn for use of native system library directories])
++fi
++
+ dnl Use --enable-gold to decide if this linker should be the default.
+ dnl "install_as_default" is set to false if gold is the default linker.
+ dnl "installed_linker" is the installed BFD linker name.
+Index: b/ld/ldfile.c
+===================================================================
+--- a/ld/ldfile.c
++++ b/ld/ldfile.c
+@@ -116,6 +116,23 @@
+ new_dirs->name = concat (ld_sysroot, name + 1, (const char *) NULL);
+ else
+ new_dirs->name = xstrdup (name);
++
++#ifdef ENABLE_POISON_SYSTEM_DIRECTORIES
++ if (command_line.poison_system_directories
++ && ((!strncmp (name, "/lib", 4))
++ || (!strncmp (name, "/usr/lib", 8))
++ || (!strncmp (name, "/usr/local/lib", 14))
++ || (!strncmp (name, "/usr/X11R6/lib", 14))))
++ {
++ if (command_line.error_poison_system_directories)
++ einfo (_("%X%P: error: library search path \"%s\" is unsafe for "
++ "cross-compilation\n"), name);
++ else
++ einfo (_("%P: warning: library search path \"%s\" is unsafe for "
++ "cross-compilation\n"), name);
++ }
++#endif
++
+ }
+
+ /* Try to open a BFD for a lang_input_statement. */
+Index: b/ld/ld.h
+===================================================================
+--- a/ld/ld.h
++++ b/ld/ld.h
+@@ -203,6 +203,14 @@
+ /* If TRUE we'll just print the default output on stdout. */
+ bfd_boolean print_output_format;
+
++ /* If TRUE (the default) warn for uses of system directories when
++ cross linking. */
++ bfd_boolean poison_system_directories;
++
++ /* If TRUE (default FALSE) give an error for uses of system
++ directories when cross linking instead of a warning. */
++ bfd_boolean error_poison_system_directories;
++
+ /* Big or little endian as set on command line. */
+ enum endian_enum endian;
+
+Index: b/ld/ldmain.c
+===================================================================
+--- a/ld/ldmain.c
++++ b/ld/ldmain.c
+@@ -265,6 +265,8 @@
+ command_line.warn_search_mismatch = TRUE;
+ command_line.check_section_addresses = -1;
+ command_line.disable_target_specific_optimizations = -1;
++ command_line.poison_system_directories = TRUE;
++ command_line.error_poison_system_directories = FALSE;
+
+ /* We initialize DEMANGLING based on the environment variable
+ COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the
+Index: b/ld/ld.texinfo
+===================================================================
+--- a/ld/ld.texinfo
++++ b/ld/ld.texinfo
+@@ -2156,6 +2156,18 @@
+
+ Passing @code{none} for @var{style} disables the setting from any
+ @code{--build-id} options earlier on the command line.
++
++@kindex --no-poison-system-directories
++@item --no-poison-system-directories
++Do not warn for @option{-L} options using system directories such as
++@file{/usr/lib} when cross linking. This option is intended for use
++in chroot environments when such directories contain the correct
++libraries for the target system rather than the host.
++
++@kindex --error-poison-system-directories
++@item --error-poison-system-directories
++Give an error instead of a warning for @option{-L} options using
++system directories when cross linking.
+ @end table
+
+ @c man end
+Index: b/ld/lexsup.c
+===================================================================
+--- a/ld/lexsup.c
++++ b/ld/lexsup.c
+@@ -498,6 +498,14 @@
+ TWO_DASHES },
+ { {"wrap", required_argument, NULL, OPTION_WRAP},
+ '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
++ { {"no-poison-system-directories", no_argument, NULL,
++ OPTION_NO_POISON_SYSTEM_DIRECTORIES},
++ '\0', NULL, N_("Do not warn for -L options using system directories"),
++ TWO_DASHES },
++ { {"error-poison-system-directories", no_argument, NULL,
++ OPTION_ERROR_POISON_SYSTEM_DIRECTORIES},
++ '\0', NULL, N_("Give an error for -L options using system directories"),
++ TWO_DASHES },
+ };
+
+ #define OPTION_COUNT ARRAY_SIZE (ld_options)
+@@ -510,6 +518,7 @@
+ int ingroup = 0;
+ char *default_dirlist = NULL;
+ char *shortopts;
++ char *BR_paranoid_env;
+ struct option *longopts;
+ struct option *really_longopts;
+ int last_optind;
+@@ -1427,9 +1436,21 @@
+ einfo (_("%P%X: --hash-size needs a numeric argument\n"));
+ }
+ break;
++
++ case OPTION_NO_POISON_SYSTEM_DIRECTORIES:
++ command_line.poison_system_directories = FALSE;
++ break;
++
++ case OPTION_ERROR_POISON_SYSTEM_DIRECTORIES:
++ command_line.error_poison_system_directories = TRUE;
++ break;
+ }
+ }
+
++ BR_paranoid_env = getenv("BR_COMPILER_PARANOID_UNSAFE_PATH");
++ if (BR_paranoid_env && strlen(BR_paranoid_env) > 0)
++ command_line.error_poison_system_directories = TRUE;
++
+ while (ingroup)
+ {
+ lang_leave_group ();
+Index: b/ld/ldlex.h
+===================================================================
+--- a/ld/ldlex.h
++++ b/ld/ldlex.h
+@@ -136,6 +136,8 @@
+ #endif /* ENABLE_PLUGINS */
+ OPTION_DEFAULT_SCRIPT,
+ OPTION_PRINT_OUTPUT_FORMAT,
++ OPTION_NO_POISON_SYSTEM_DIRECTORIES,
++ OPTION_ERROR_POISON_SYSTEM_DIRECTORIES,
+ };
+
+ /* The initial parser states. */