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Few naive test cases for link(2).

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This commit is contained in:
jruoho 2011-07-03 17:47:15 +00:00
parent 07ba10b37c
commit 81ab4d12a9
3 changed files with 230 additions and 3 deletions
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4
distrib/sets/lists/tests/mi
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@ -1,4 +1,4 @@
# $NetBSD: mi,v 1.358 2011/07/03 15:24:49 mrg Exp $
# $NetBSD: mi,v 1.359 2011/07/03 17:47:15 jruoho Exp $
#
# Note: don't delete entries from here - mark them as "obsolete" instead.
#
@ -632,6 +632,7 @@
./usr/libdata/debug/usr/tests/syscall/t_gettimeofday.debug tests-syscall-debug debug,atf
./usr/libdata/debug/usr/tests/syscall/t_itimer.debug tests-syscall-debug debug,atf
./usr/libdata/debug/usr/tests/syscall/t_kill.debug tests-syscall-debug debug,atf
./usr/libdata/debug/usr/tests/syscall/t_link.debug tests-syscall-debug debug,atf
./usr/libdata/debug/usr/tests/syscall/t_mincore.debug tests-syscall-debug debug,atf
./usr/libdata/debug/usr/tests/syscall/t_mknod.debug tests-syscall-debug debug,atf
./usr/libdata/debug/usr/tests/syscall/t_mmap.debug tests-syscall-debug debug,atf
@ -2380,6 +2381,7 @@
./usr/tests/syscall/t_gettimeofday tests-syscall-tests atf
./usr/tests/syscall/t_itimer tests-syscall-tests atf
./usr/tests/syscall/t_kill tests-syscall-tests atf
./usr/tests/syscall/t_link tests-syscall-tests atf
./usr/tests/syscall/t_mincore tests-syscall-tests atf
./usr/tests/syscall/t_mknod tests-syscall-tests atf
./usr/tests/syscall/t_mmap tests-syscall-tests atf

4
tests/syscall/Makefile
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@ -1,4 +1,4 @@
# $NetBSD: Makefile,v 1.35 2011/07/03 15:05:43 jruoho Exp $
# $NetBSD: Makefile,v 1.36 2011/07/03 17:47:15 jruoho Exp $
.include <bsd.own.mk>
@ -7,7 +7,7 @@ TESTSDIR= ${TESTSBASE}/syscall
TESTS_C+= t_access t_cmsg t_dup t_fsync
TESTS_C+= t_getgroups t_getlogin t_getpid
TESTS_C+= t_getrusage t_getsid t_gettimeofday
TESTS_C+= t_itimer t_kill
TESTS_C+= t_itimer t_kill t_link
TESTS_C+= t_mincore t_mknod t_mmap t_mprotect t_msync t_nanosleep
TESTS_C+= t_poll t_pollts t_pselect
TESTS_C+= t_setrlimit t_setuid t_stat t_timer t_truncate

225
tests/syscall/t_link.c Normal file
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@ -0,0 +1,225 @@
/* $NetBSD: t_link.c,v 1.1 2011/07/03 17:47:15 jruoho Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jukka Ruohonen.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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 <sys/cdefs.h>
__RCSID("$NetBSD: t_link.c,v 1.1 2011/07/03 17:47:15 jruoho Exp $");
#include <sys/param.h>
#include <sys/stat.h>
#include <atf-c.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
static const char *getpath(void);
static char path[] = "link";
static const char *pathl;
static const char *
getpath(void)
{
static char buf[LINE_MAX];
(void)memset(buf, '\0', sizeof(buf));
if (getcwd(buf, sizeof(buf)) == NULL)
return NULL;
(void)strlcat(buf, path, sizeof(buf));
(void)strlcat(buf, ".link", sizeof(buf));
return buf;
}
ATF_TC_WITH_CLEANUP(link_count);
ATF_TC_HEAD(link_count, tc)
{
atf_tc_set_md_var(tc, "descr", "link(2) counts are incremented?");
}
ATF_TC_BODY(link_count, tc)
{
struct stat sa, sb;
int fd;
(void)memset(&sa, 0, sizeof(struct stat));
(void)memset(&sb, 0, sizeof(struct stat));
pathl = getpath();
fd = open(path, O_RDWR | O_CREAT, 0600);
ATF_REQUIRE(fd >= 0);
ATF_REQUIRE(pathl != NULL);
ATF_REQUIRE(stat(path, &sa) == 0);
ATF_REQUIRE(link(path, pathl) == 0);
ATF_REQUIRE(stat(path, &sb) == 0);
if (sa.st_nlink != sb.st_nlink - 1)
atf_tc_fail("incorrect link(2) count");
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(unlink(path) == 0);
ATF_REQUIRE(unlink(pathl) == 0);
}
ATF_TC_CLEANUP(link_count, tc)
{
(void)unlink(path);
(void)unlink(pathl);
}
ATF_TC_WITH_CLEANUP(link_err);
ATF_TC_HEAD(link_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test error conditions of link(2)");
}
ATF_TC_BODY(link_err, tc)
{
char buf[MAXPATHLEN + 1];
int fd;
(void)memset(buf, 'x', sizeof(buf));
pathl = getpath();
fd = open(path, O_RDWR | O_CREAT, 0600);
ATF_REQUIRE(fd >= 0);
ATF_REQUIRE(pathl != NULL);
errno = 0;
ATF_REQUIRE(link(path, pathl) == 0);
ATF_REQUIRE_ERRNO(EEXIST, link(path, pathl) == -1);
errno = 0;
ATF_REQUIRE_ERRNO(ENAMETOOLONG, link(buf, "xxx") == -1);
errno = 0;
ATF_REQUIRE_ERRNO(ENOENT, link(path, "/d/c/b/a") == -1);
errno = 0;
ATF_REQUIRE_ERRNO(ENOENT, link("/a/b/c/d", path) == -1);
errno = 0;
ATF_REQUIRE_ERRNO(ENOENT, link("/a/b/c/d", "/d/c/b/a") == -1);
errno = 0;
ATF_REQUIRE_ERRNO(EFAULT, link(path, (const char *)-1) == -1);
errno = 0;
ATF_REQUIRE_ERRNO(EFAULT, link((const char *)-1, "xxx") == -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(unlink(path) == 0);
ATF_REQUIRE(unlink(pathl) == 0);
}
ATF_TC_CLEANUP(link_err, tc)
{
(void)unlink(path);
(void)unlink(pathl);
}
ATF_TC(link_perm);
ATF_TC_HEAD(link_perm, tc)
{
atf_tc_set_md_var(tc, "descr", "Test permissions with link(2)");
atf_tc_set_md_var(tc, "require.user", "unprivileged");
}
ATF_TC_BODY(link_perm, tc)
{
errno =0;
ATF_REQUIRE_ERRNO(EACCES, link("/root", "/root.link") == -1);
errno = 0;
ATF_REQUIRE_ERRNO(EACCES,
link("/root/.profile", "/root/.profile.link") == -1);
}
ATF_TC_WITH_CLEANUP(link_stat);
ATF_TC_HEAD(link_stat, tc)
{
atf_tc_set_md_var(tc, "descr", "Check stat(2) of a linked file");
}
ATF_TC_BODY(link_stat, tc)
{
struct stat sa, sb;
int fd;
(void)memset(&sa, 0, sizeof(struct stat));
(void)memset(&sb, 0, sizeof(struct stat));
pathl = getpath();
fd = open(path, O_RDWR | O_CREAT, 0600);
ATF_REQUIRE(fd >= 0);
ATF_REQUIRE(pathl != NULL);
ATF_REQUIRE(link(path, pathl) == 0);
ATF_REQUIRE(stat(path, &sa) == 0);
ATF_REQUIRE(lstat(pathl, &sb) == 0);
if (sa.st_uid != sb.st_uid)
atf_tc_fail("unequal UIDs");
if (sa.st_mode != sb.st_mode)
atf_tc_fail("unequal modes");
if (sa.st_ino != sb.st_ino)
atf_tc_fail("unequal inodes");
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(unlink(path) == 0);
ATF_REQUIRE(unlink(pathl) == 0);
}
ATF_TC_CLEANUP(link_stat, tc)
{
(void)unlink(path);
(void)unlink(pathl);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, link_count);
ATF_TP_ADD_TC(tp, link_err);
ATF_TP_ADD_TC(tp, link_perm);
ATF_TP_ADD_TC(tp, link_stat);
return atf_no_error();
}