minix/tests/lib/libc/sys/t_chroot.c
Lionel Sambuc 11be35a165 Importing NetBSD "Kyua" test framework
To do so, a few dependencies have been imported:

 * external/bsd/lutok
 * external/mit/lua
 * external/public-domain/sqlite
 * external/public-domain/xz

The Kyua framework is the new generation of ATF (Automated Test
Framework), it is composed of:

 * external/bsd/atf
 * external/bsd/kyua-atf-compat
 * external/bsd/kyua-cli
 * external/bsd/kyua-tester
 * tests

Kyua/ATF being written in C++, it depends on libstdc++ which is
provided by GCC. As this is not part of the sources, Kyua is only
compiled when the native GCC utils are installed.

To install Kyua do the following:

 * In a cross-build enviromnent, add the following to the build.sh
   commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes

WARNING:
  At this point the import is still experimental, and not supported
  on native builds (a.k.a make build).

Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
2013-07-23 20:43:41 +02:00

313 lines
6.7 KiB
C

/* $NetBSD: t_chroot.c,v 1.1 2011/07/07 06:57:53 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_chroot.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
#include <sys/wait.h>
#include <atf-c.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <pwd.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
ATF_TC(chroot_basic);
ATF_TC_HEAD(chroot_basic, tc)
{
atf_tc_set_md_var(tc, "descr", "A basic test of chroot(2)");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(chroot_basic, tc)
{
char buf[PATH_MAX];
int fd, sta;
pid_t pid;
(void)memset(buf, '\0', sizeof(buf));
(void)getcwd(buf, sizeof(buf));
(void)strlcat(buf, "/dir", sizeof(buf));
ATF_REQUIRE(mkdir(buf, 0500) == 0);
ATF_REQUIRE(chdir(buf) == 0);
pid = fork();
ATF_REQUIRE(pid >= 0);
if (pid == 0) {
if (chroot(buf) != 0)
_exit(EXIT_FAILURE);
errno = 0;
if (chroot("/root") != -1)
_exit(EXIT_FAILURE);
if (errno != ENOENT)
_exit(EXIT_FAILURE);
fd = open("file", O_RDONLY | O_CREAT, 0600);
if (fd < 0)
_exit(EXIT_FAILURE);
if (close(fd) != 0)
_exit(EXIT_FAILURE);
_exit(EXIT_SUCCESS);
}
(void)wait(&sta);
if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
atf_tc_fail("chroot(2) failed");
(void)chdir("/");
(void)strlcat(buf, "/file", sizeof(buf));
fd = open(buf, O_RDONLY);
if (fd < 0)
atf_tc_fail("chroot(2) did not change the root directory");
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(unlink(buf) == 0);
}
ATF_TC(chroot_err);
ATF_TC_HEAD(chroot_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test error conditions of chroot(2)");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(chroot_err, tc)
{
char buf[PATH_MAX + 1];
(void)memset(buf, 'x', sizeof(buf));
errno = 0;
ATF_REQUIRE_ERRNO(ENAMETOOLONG, chroot(buf) == -1);
errno = 0;
ATF_REQUIRE_ERRNO(EFAULT, chroot((void *)-1) == -1);
errno = 0;
ATF_REQUIRE_ERRNO(ENOENT, chroot("/a/b/c/d/e/f/g/h/i/j") == -1);
}
ATF_TC(chroot_perm);
ATF_TC_HEAD(chroot_perm, tc)
{
atf_tc_set_md_var(tc, "descr", "Test permissions with chroot(2)");
atf_tc_set_md_var(tc, "require.user", "unprivileged");
}
ATF_TC_BODY(chroot_perm, tc)
{
static char buf[LINE_MAX];
pid_t pid;
int sta;
(void)memset(buf, '\0', sizeof(buf));
ATF_REQUIRE(getcwd(buf, sizeof(buf)) != NULL);
pid = fork();
ATF_REQUIRE(pid >= 0);
if (pid == 0) {
errno = 0;
if (chroot(buf) != -1)
_exit(EXIT_FAILURE);
if (errno != EPERM)
_exit(EXIT_FAILURE);
_exit(EXIT_SUCCESS);
}
(void)wait(&sta);
if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
atf_tc_fail("chroot(2) succeeded as unprivileged user");
}
ATF_TC(fchroot_basic);
ATF_TC_HEAD(fchroot_basic, tc)
{
atf_tc_set_md_var(tc, "descr", "A basic test of fchroot(2)");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(fchroot_basic, tc)
{
char buf[PATH_MAX];
int fd, sta;
pid_t pid;
(void)memset(buf, '\0', sizeof(buf));
(void)getcwd(buf, sizeof(buf));
(void)strlcat(buf, "/dir", sizeof(buf));
ATF_REQUIRE(mkdir(buf, 0500) == 0);
ATF_REQUIRE(chdir(buf) == 0);
fd = open(buf, O_RDONLY);
ATF_REQUIRE(fd >= 0);
pid = fork();
ATF_REQUIRE(pid >= 0);
if (pid == 0) {
if (fchroot(fd) != 0)
_exit(EXIT_FAILURE);
if (close(fd) != 0)
_exit(EXIT_FAILURE);
fd = open("file", O_RDONLY | O_CREAT, 0600);
if (fd < 0)
_exit(EXIT_FAILURE);
if (close(fd) != 0)
_exit(EXIT_FAILURE);
_exit(EXIT_SUCCESS);
}
(void)wait(&sta);
if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
atf_tc_fail("fchroot(2) failed");
(void)chdir("/");
(void)strlcat(buf, "/file", sizeof(buf));
fd = open(buf, O_RDONLY);
if (fd < 0)
atf_tc_fail("fchroot(2) did not change the root directory");
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(unlink(buf) == 0);
}
ATF_TC(fchroot_err);
ATF_TC_HEAD(fchroot_err, tc)
{
atf_tc_set_md_var(tc, "descr", "Test error conditions of fchroot(2)");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(fchroot_err, tc)
{
int fd;
fd = open("/etc/passwd", O_RDONLY);
ATF_REQUIRE(fd >= 0);
errno = 0;
ATF_REQUIRE_ERRNO(EBADF, fchroot(-1) == -1);
errno = 0;
ATF_REQUIRE_ERRNO(ENOTDIR, fchroot(fd) == -1);
ATF_REQUIRE(close(fd) == 0);
}
ATF_TC(fchroot_perm);
ATF_TC_HEAD(fchroot_perm, tc)
{
atf_tc_set_md_var(tc, "descr", "Test permissions with fchroot(2)");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(fchroot_perm, tc)
{
static char buf[LINE_MAX];
struct passwd *pw;
int fd, sta;
pid_t pid;
(void)memset(buf, '\0', sizeof(buf));
ATF_REQUIRE(getcwd(buf, sizeof(buf)) != NULL);
pw = getpwnam("nobody");
fd = open(buf, O_RDONLY);
ATF_REQUIRE(fd >= 0);
ATF_REQUIRE(pw != NULL);
pid = fork();
ATF_REQUIRE(pid >= 0);
if (pid == 0) {
(void)setuid(pw->pw_uid);
errno = 0;
if (fchroot(fd) != -1)
_exit(EXIT_FAILURE);
if (errno != EPERM)
_exit(EXIT_FAILURE);
_exit(EXIT_SUCCESS);
}
(void)wait(&sta);
if (WIFEXITED(sta) == 0 || WEXITSTATUS(sta) != EXIT_SUCCESS)
atf_tc_fail("fchroot(2) succeeded as unprivileged user");
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, chroot_basic);
ATF_TP_ADD_TC(tp, chroot_err);
ATF_TP_ADD_TC(tp, chroot_perm);
ATF_TP_ADD_TC(tp, fchroot_basic);
ATF_TP_ADD_TC(tp, fchroot_err);
ATF_TP_ADD_TC(tp, fchroot_perm);
return atf_no_error();
}