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75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/* Verify that __clone_internal properly aligns the child stack.
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Copyright (C) 2021 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 <sched.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <libc-pointer-arith.h>
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#include <tst-stack-align.h>
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#include <clone_internal.h>
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#include <support/xunistd.h>
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#include <support/check.h>
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static int
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check_stack_alignment (void *arg)
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{
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puts ("in f");
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return TEST_STACK_ALIGN () ? 1 : 0;
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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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puts ("in do_test");
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if (TEST_STACK_ALIGN ())
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FAIL_EXIT1 ("stack isn't aligned\n");
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#ifdef __ia64__
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# define STACK_SIZE (256 * 1024)
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#else
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# define STACK_SIZE (128 * 1024)
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#endif
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char st[STACK_SIZE + 1];
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/* NB: Align child stack to 1 byte. */
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char *stack = PTR_ALIGN_UP (&st[0], 2) + 1;
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struct clone_args clone_args =
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{
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.stack = (uintptr_t) stack,
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.stack_size = STACK_SIZE,
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};
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pid_t p = __clone_internal (&clone_args, check_stack_alignment, 0);
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/* Clone must not fail. */
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TEST_VERIFY_EXIT (p != -1);
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int e;
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xwaitpid (p, &e, __WCLONE);
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TEST_VERIFY (WIFEXITED (e));
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TEST_COMPARE (WEXITSTATUS (e), 0);
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return 0;
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}
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#include <support/test-driver.c>
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