mirror of git://sourceware.org/git/glibc.git
107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
/* Test case for ignored LD_LIBRARY_PATH in static startug (bug 32976).
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Copyright (C) 2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <dlfcn.h>
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#include <gnu/lib-names.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <support/capture_subprocess.h>
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#include <support/check.h>
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#include <support/support.h>
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#include <support/temp_file.h>
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#include <support/test-driver.h>
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#include <sys/wait.h>
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#include <unistd.h>
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/* This is the name of our test object. Use a custom module for
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testing, so that this object does not get picked up from the system
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path. */
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static const char dso_name[] = "tst-dlopen-sgid-mod.so";
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/* Used to mark the recursive invocation. */
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static const char magic_argument[] = "run-actual-test";
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static int
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do_test (void)
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{
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/* Pathname of the directory that receives the shared objects this
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test attempts to load. */
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char *libdir = support_create_temp_directory ("tst-dlopen-sgid-");
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/* This is supposed to be ignored and stripped. */
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TEST_COMPARE (setenv ("LD_LIBRARY_PATH", libdir, 1), 0);
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/* Copy of libc.so.6. */
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{
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char *from = xasprintf ("%s/%s", support_objdir_root, LIBC_SO);
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char *to = xasprintf ("%s/%s", libdir, LIBC_SO);
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add_temp_file (to);
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support_copy_file (from, to);
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free (to);
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free (from);
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}
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/* Copy of the test object. */
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{
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char *from = xasprintf ("%s/elf/%s", support_objdir_root, dso_name);
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char *to = xasprintf ("%s/%s", libdir, dso_name);
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add_temp_file (to);
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support_copy_file (from, to);
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free (to);
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free (from);
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}
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free (libdir);
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support_capture_subprogram_self_sgid (magic_argument);
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return 0;
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}
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static void
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alternative_main (int argc, char **argv)
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{
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if (argc == 2 && strcmp (argv[1], magic_argument) == 0)
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{
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if (getgid () == getegid ())
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/* This can happen if the file system is mounted nosuid. */
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FAIL_UNSUPPORTED ("SGID failed: GID and EGID match (%jd)\n",
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(intmax_t) getgid ());
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/* Should be removed due to SGID. */
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TEST_COMPARE_STRING (getenv ("LD_LIBRARY_PATH"), NULL);
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TEST_VERIFY (dlopen (dso_name, RTLD_NOW) == NULL);
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{
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const char *message = dlerror ();
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TEST_COMPARE_STRING (message,
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"tst-dlopen-sgid-mod.so:"
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" cannot open shared object file:"
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" No such file or directory");
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}
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support_record_failure_barrier ();
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exit (EXIT_SUCCESS);
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}
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}
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#define PREPARE alternative_main
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#include <support/test-driver.c>
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