mirror of git://sourceware.org/git/glibc.git
157 lines
3.5 KiB
C
157 lines
3.5 KiB
C
/* Copyright (C) 2005-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2005.
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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 <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/wait.h>
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#include <tst-stack-align.h>
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#include <unistd.h>
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static int res, fds[2], result;
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static bool test_destructors;
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extern void in_dso (int *, bool *, int *);
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static void __attribute__ ((constructor)) con (void)
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{
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res = TEST_STACK_ALIGN () ? -1 : 1;
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}
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static void __attribute__ ((destructor)) des (void)
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{
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if (!test_destructors)
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return;
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char c = TEST_STACK_ALIGN () ? 'B' : 'A';
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write (fds[1], &c, 1);
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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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if (!res)
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{
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puts ("binary's constructor has not been run");
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result = 1;
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}
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else if (res != 1)
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{
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puts ("binary's constructor has been run without sufficient alignment");
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result = 1;
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}
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if (TEST_STACK_ALIGN ())
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{
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puts ("insufficient stack alignment in do_test");
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result = 1;
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}
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in_dso (&result, &test_destructors, &fds[1]);
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if (pipe (fds) < 0)
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{
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printf ("couldn't create pipe: %m\n");
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return 1;
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}
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pid_t pid = fork ();
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if (pid < 0)
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{
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printf ("fork failed: %m\n");
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return 1;
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}
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if (!pid)
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{
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close (fds[0]);
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test_destructors = true;
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exit (0);
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}
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close (fds[1]);
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unsigned char c;
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ssize_t len;
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int des_seen = 0, dso_des_seen = 0;
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while ((len = TEMP_FAILURE_RETRY (read (fds[0], &c, 1))) > 0)
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{
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switch (c)
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{
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case 'B':
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puts ("insufficient alignment in binary's destructor");
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result = 1;
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/* FALLTHROUGH */
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case 'A':
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des_seen++;
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break;
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case 'D':
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puts ("insufficient alignment in DSO destructor");
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result = 1;
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/* FALLTHROUGH */
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case 'C':
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dso_des_seen++;
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break;
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default:
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printf ("unexpected character %x read from pipe", c);
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result = 1;
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break;
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}
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}
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close (fds[0]);
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if (des_seen != 1)
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{
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printf ("binary destructor run %d times instead of once\n", des_seen);
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result = 1;
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}
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if (dso_des_seen != 1)
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{
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printf ("DSO destructor run %d times instead of once\n", dso_des_seen);
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result = 1;
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}
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int status;
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pid_t termpid;
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termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0));
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if (termpid == -1)
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{
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printf ("waitpid failed: %m\n");
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result = 1;
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}
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else if (termpid != pid)
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{
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printf ("waitpid returned %ld != %ld\n",
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(long int) termpid, (long int) pid);
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result = 1;
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}
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else if (!WIFEXITED (status) || WEXITSTATUS (status))
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{
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puts ("child hasn't exited with exit status 0");
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result = 1;
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}
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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