/*
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* Test printpath/umovestr.
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*
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* Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2017-2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "test_ucopy.h"
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static void
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test_printpath_at(char *const p, const unsigned int test_max)
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{
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/*
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* /
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* /.
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* /..
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* /...
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* /../.
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* /../..
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* /../../
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*/
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char *const eop = p + (test_max - 1);
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*eop = '\0';
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unsigned int i;
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for (i = 1; i < test_max; ++i) {
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const unsigned int i_1 = i - 1;
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memmove(eop - i, eop - i_1, i_1);
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eop[-1] = "/.."[i_1 % 3];
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if (chdir(eop - i))
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perror_msg_and_fail("chdir");
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printf("chdir(\"%s\") = 0\n", eop - i);
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}
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}
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static void
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test_efault(const unsigned int test_max)
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{
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char *p = tail_alloc(test_max);
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const char *const efault = p + test_max;
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memset(p, '/', test_max);
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for (; p <= efault; ++p) {
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if (p <= efault - PATH_MAX)
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continue;
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printf("chdir(%p) = %s\n", p, sprintrc(chdir(p)));
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}
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}
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static void
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test_enametoolong(void)
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{
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char *p = tail_alloc(PATH_MAX);
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memset(p, '/', PATH_MAX);
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printf("chdir(\"%.*s\"...) = %s\n",
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PATH_MAX - 1, p, sprintrc(chdir(p)));
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}
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void
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test_printpath(const unsigned int test_max)
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{
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/*
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* /../..|
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* /../.|.
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* /../|..
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* /..|/..
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* /.|./..
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* /|../..
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* |/../..
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*/
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const unsigned int page_size = get_page_size();
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char *p = tail_alloc(test_max + page_size);
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unsigned int i;
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for (i = 1; i < sizeof(long); ++i)
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test_printpath_at(p + i, test_max);
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for (i = 0; i < sizeof(long); ++i)
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test_printpath_at(p + page_size - i, test_max);
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test_efault(test_max);
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test_enametoolong();
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}
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