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/*
* Test printpath/umovestr.
*
* Copyright (c) 2015-2017 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2017-2022 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "test_ucopy.h"
static void
test_printpath_at(char *const p, const unsigned int test_max)
{
/*
* /
* /.
* /..
* /../
* /../.
* /../..
* /../../
*/
char *const eop = p + (test_max - 1);
*eop = '\0';
for (unsigned int i = 1; i < test_max; ++i) {
const unsigned int i_1 = i - 1;
memmove(eop - i, eop - i_1, i_1);
eop[-1] = "/.."[i_1 % 3];
if (chdir(eop - i))
perror_msg_and_fail("chdir");
printf("chdir(\"%s\") = 0\n", eop - i);
}
}
static void
test_efault(const unsigned int test_max)
{
char *p = tail_alloc(test_max);
const char *const efault = p + test_max;
memset(p, '/', test_max);
for (; p <= efault; ++p) {
if (p <= efault - PATH_MAX)
continue;
printf("chdir(%p) = %s\n", p, sprintrc(chdir(p)));
}
}
static void
test_enametoolong(void)
{
char *p = tail_alloc(PATH_MAX);
memset(p, '/', PATH_MAX);
printf("chdir(\"%.*s\"...) = %s\n",
PATH_MAX - 1, p, sprintrc(chdir(p)));
}
void
test_printpath(const unsigned int test_max)
{
/*
* /../..|
* /../.|.
* /../|..
* /..|/..
* /.|./..
* /|../..
* |/../..
*/
const unsigned int page_size = get_page_size();
char *p = tail_alloc(test_max + page_size);
for (unsigned int i = 1; i < sizeof(long); ++i)
test_printpath_at(p + i, test_max);
for (unsigned int i = 0; i < sizeof(long); ++i)
test_printpath_at(p + page_size - i, test_max);
test_efault(test_max);
test_enametoolong();
}
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