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tests: add test_printpath function to libtests

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* tests/test_ucopy.h (test_printpath): New prototype.
* tests/test_printpath.c: New file.
* tests/Makefile.am (libtests_a_SOURCES): Add it.
This commit is contained in:
Дмитрий Левин 2017-08-01 20:59:48 +00:00
parent 4f03dc3fc6
commit 7a9eea94ee
3 changed files with 114 additions and 0 deletions
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1
tests/Makefile.am
View File

@ -65,6 +65,7 @@ libtests_a_SOURCES = \
tail_alloc.c \
test_netlink.h \
test_nlattr.h \
test_printpath.c \
test_ucopy.c \
test_ucopy.h \
tests.h \

110
tests/test_printpath.c Normal file
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@ -0,0 +1,110 @@
/*
* Test printpath/umovestr.
*
* Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "tests.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.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';
unsigned int i;
for (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);
unsigned int i;
for (i = 1; i < sizeof(long); ++i)
test_printpath_at(p + i, test_max);
for (i = 0; i < sizeof(long); ++i)
test_printpath_at(p + page_size - i, test_max);
test_efault(test_max);
test_enametoolong();
}

3
tests/test_ucopy.h
View File

@ -5,3 +5,6 @@ test_process_vm_readv(void);
extern bool
test_ptrace_peekdata(void);
extern void
test_printpath(unsigned int test_max_size);