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da2b83ef6b
Use a new libsupport support_bindir_prefix instead of a hardcoded /usr/bin to create the pldd path on container directory. Checked on x86_64-linux-gnu with default and non-default --prefix and --bindir paths, as well with --enable-hardcoded-path-in-tests. [BZ #24544] * elf/tst-pldd.c (do_test): Use support_bindir_prefix instead of pre-defined value. Reviewed-by: DJ Delorie <dj@redhat.com>
137 lines
3.8 KiB
C
137 lines
3.8 KiB
C
/* Basic tests for pldd program.
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Copyright (C) 2019 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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<http://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <array_length.h>
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#include <gnu/lib-names.h>
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#include <support/subprocess.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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static void
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target_process (void *arg)
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{
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pause ();
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}
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/* The test runs in a container because pldd does not support tracing
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a binary started by the loader iself (as with testrun.sh). */
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static bool
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in_str_list (const char *libname, const char *const strlist[])
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{
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for (const char *const *str = strlist; *str != NULL; str++)
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if (strcmp (libname, *str) == 0)
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return true;
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return false;
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}
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static int
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do_test (void)
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{
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/* Create a copy of current test to check with pldd. */
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struct support_subprocess target = support_subprocess (target_process, NULL);
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/* Run 'pldd' on test subprocess. */
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struct support_capture_subprocess pldd;
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{
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/* Three digits per byte plus null terminator. */
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char pid[3 * sizeof (uint32_t) + 1];
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snprintf (pid, array_length (pid), "%d", target.pid);
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char *prog = xasprintf ("%s/pldd", support_bindir_prefix);
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pldd = support_capture_subprogram (prog,
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(char *const []) { (char *) prog, pid, NULL });
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support_capture_subprocess_check (&pldd, "pldd", 0, sc_allow_stdout);
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free (prog);
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}
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/* Check 'pldd' output. The test is expected to be linked against only
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loader and libc. */
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{
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pid_t pid;
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char buffer[512];
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#define STRINPUT(size) "%" # size "s"
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FILE *out = fmemopen (pldd.out.buffer, pldd.out.length, "r");
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TEST_VERIFY (out != NULL);
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/* First line is in the form of <pid>: <full path of executable> */
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TEST_COMPARE (fscanf (out, "%u: " STRINPUT (512), &pid, buffer), 2);
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TEST_COMPARE (pid, target.pid);
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TEST_COMPARE (strcmp (basename (buffer), "tst-pldd"), 0);
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/* It expects only one loader and libc loaded by the program. */
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bool interpreter_found = false, libc_found = false;
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while (fgets (buffer, array_length (buffer), out) != NULL)
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{
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/* Ignore vDSO. */
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if (buffer[0] != '/')
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continue;
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/* Remove newline so baseline (buffer) can compare against the
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LD_SO and LIBC_SO macros unmodified. */
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if (buffer[strlen(buffer)-1] == '\n')
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buffer[strlen(buffer)-1] = '\0';
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const char *libname = basename (buffer);
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/* It checks for default names in case of build configure with
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--enable-hardcoded-path-in-tests (BZ #24506). */
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if (in_str_list (libname,
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(const char *const []) { "ld.so", LD_SO, NULL }))
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{
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TEST_COMPARE (interpreter_found, false);
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interpreter_found = true;
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continue;
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}
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if (in_str_list (libname,
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(const char *const []) { "libc.so", LIBC_SO, NULL }))
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{
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TEST_COMPARE (libc_found, false);
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libc_found = true;
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continue;
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}
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}
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TEST_COMPARE (interpreter_found, true);
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TEST_COMPARE (libc_found, true);
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fclose (out);
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}
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support_capture_subprocess_free (&pldd);
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support_process_terminate (&target);
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return 0;
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}
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#include <support/test-driver.c>
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