174 lines
5.7 KiB
Diff
174 lines
5.7 KiB
Diff
commit c6702789344043fa998923c8f32ed0bdb2edfa9c
|
|
Author: Vincent Mihalkovic <vmihalko@redhat.com>
|
|
Date: Tue Sep 29 12:34:39 2020 +0200
|
|
|
|
ld.so: add an --argv0 option [BZ #16124]
|
|
|
|
Conflicts:
|
|
elf/Makefile
|
|
(Missing test backports.)
|
|
|
|
diff --git a/elf/Makefile b/elf/Makefile
|
|
index 82b5b4a07495c805..837a070c267527e1 100644
|
|
--- a/elf/Makefile
|
|
+++ b/elf/Makefile
|
|
@@ -198,7 +198,8 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \
|
|
tst-dlopenfail tst-dlopenfail-2 \
|
|
tst-filterobj tst-filterobj-dlopen tst-auxobj tst-auxobj-dlopen \
|
|
tst-audit14 tst-audit15 tst-audit16 \
|
|
- tst-tls-ie tst-tls-ie-dlmopen
|
|
+ tst-tls-ie tst-tls-ie-dlmopen \
|
|
+ argv0test
|
|
# reldep9
|
|
tests-internal += loadtest unload unload2 circleload1 \
|
|
neededtest neededtest2 neededtest3 neededtest4 \
|
|
@@ -395,7 +396,7 @@ endif
|
|
ifeq (yes,$(build-shared))
|
|
ifeq ($(run-built-tests),yes)
|
|
tests-special += $(objpfx)tst-pathopt.out $(objpfx)tst-rtld-load-self.out \
|
|
- $(objpfx)tst-rtld-preload.out
|
|
+ $(objpfx)tst-rtld-preload.out $(objpfx)argv0test.out
|
|
endif
|
|
tests-special += $(objpfx)check-textrel.out $(objpfx)check-execstack.out \
|
|
$(objpfx)check-wx-segment.out \
|
|
@@ -1716,3 +1717,10 @@ $(objpfx)tst-tls-ie-dlmopen.out: \
|
|
$(objpfx)tst-tls-ie-mod6.so
|
|
|
|
$(objpfx)tst-tls-surplus: $(libdl)
|
|
+
|
|
+$(objpfx)argv0test.out: tst-rtld-argv0.sh $(objpfx)ld.so \
|
|
+ $(objpfx)argv0test
|
|
+ $(SHELL) $< $(objpfx)ld.so $(objpfx)argv0test \
|
|
+ '$(test-wrapper-env)' '$(run_program_env)' \
|
|
+ '$(rpath-link)' 'test-argv0' > $@; \
|
|
+ $(evaluate-test)
|
|
diff --git a/elf/argv0test.c b/elf/argv0test.c
|
|
new file mode 100644
|
|
index 0000000000000000..c22ba5ea70ed7dbf
|
|
--- /dev/null
|
|
+++ b/elf/argv0test.c
|
|
@@ -0,0 +1,31 @@
|
|
+/* Test for --argv0 option ld.so.
|
|
+
|
|
+ Copyright (C) 2020 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 <string.h>
|
|
+#include <support/check.h>
|
|
+
|
|
+static int
|
|
+do_test (int argc, char **argv)
|
|
+{
|
|
+ TEST_COMPARE_STRING (argv[0], "test-argv0");
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#define TEST_FUNCTION_ARGV do_test
|
|
+#include <support/test-driver.c>
|
|
diff --git a/elf/rtld.c b/elf/rtld.c
|
|
index 67441ac6f252350e..4107a215abd554f4 100644
|
|
--- a/elf/rtld.c
|
|
+++ b/elf/rtld.c
|
|
@@ -1196,6 +1196,8 @@ dl_main (const ElfW(Phdr) *phdr,
|
|
installing it. */
|
|
rtld_is_main = true;
|
|
|
|
+ char *argv0 = NULL;
|
|
+
|
|
/* Note the place where the dynamic linker actually came from. */
|
|
GL(dl_rtld_map).l_name = rtld_progname;
|
|
|
|
@@ -1253,6 +1255,14 @@ dl_main (const ElfW(Phdr) *phdr,
|
|
else if (! strcmp (_dl_argv[1], "--preload") && _dl_argc > 2)
|
|
{
|
|
preloadarg = _dl_argv[2];
|
|
+ _dl_skip_args += 2;
|
|
+ _dl_argc -= 2;
|
|
+ _dl_argv += 2;
|
|
+ }
|
|
+ else if (! strcmp (_dl_argv[1], "--argv0") && _dl_argc > 2)
|
|
+ {
|
|
+ argv0 = _dl_argv[2];
|
|
+
|
|
_dl_skip_args += 2;
|
|
_dl_argc -= 2;
|
|
_dl_argv += 2;
|
|
@@ -1286,7 +1296,8 @@ of this helper program; chances are you did not intend to run this program.\n\
|
|
--inhibit-rpath LIST ignore RUNPATH and RPATH information in object names\n\
|
|
in LIST\n\
|
|
--audit LIST use objects named in LIST as auditors\n\
|
|
- --preload LIST preload objects named in LIST\n");
|
|
+ --preload LIST preload objects named in LIST\n\
|
|
+ --argv0 STRING set argv[0] to STRING before running\n");
|
|
|
|
++_dl_skip_args;
|
|
--_dl_argc;
|
|
@@ -1378,6 +1389,10 @@ of this helper program; chances are you did not intend to run this program.\n\
|
|
break;
|
|
}
|
|
#endif
|
|
+
|
|
+ /* Set the argv[0] string now that we've processed the executable. */
|
|
+ if (argv0 != NULL)
|
|
+ _dl_argv[0] = argv0;
|
|
}
|
|
else
|
|
{
|
|
diff --git a/elf/tst-rtld-argv0.sh b/elf/tst-rtld-argv0.sh
|
|
new file mode 100755
|
|
index 0000000000000000..14d97fb375fc652b
|
|
--- /dev/null
|
|
+++ b/elf/tst-rtld-argv0.sh
|
|
@@ -0,0 +1,37 @@
|
|
+#!/bin/sh
|
|
+# Test for --argv0 option ld.so.
|
|
+# Copyright (C) 2020 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/>.
|
|
+
|
|
+set -e
|
|
+
|
|
+rtld=$1
|
|
+test_program=$2
|
|
+test_wrapper_env=$3
|
|
+run_program_env=$4
|
|
+library_path=$5
|
|
+argv0=$6
|
|
+
|
|
+echo "# [${test_wrapper_env}] [${run_program_env}] [$rtld] [--library-path]" \
|
|
+ "[$library_path] [--argv0] [$argv0] [$test_program]"
|
|
+${test_wrapper_env} \
|
|
+${run_program_env} \
|
|
+$rtld --library-path "$library_path" \
|
|
+ --argv0 "$argv0" $test_program 2>&1 && rc=0 || rc=$?
|
|
+echo "# exit status $rc"
|
|
+
|
|
+exit $rc
|