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/* $NetBSD: t_o_search.c,v 1.5 2017/01/10 22:25:01 christos Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus.
*
* 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_o_search.c,v 1.5 2017/01/10 22:25:01 christos Exp $");
#include <atf-c.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <paths.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pwd.h>
/*
* dholland 20130112: disable tests that require O_SEARCH semantics
* until a decision is reached about the semantics of O_SEARCH and a
* non-broken implementation is available.
*/
#if (O_MASK & O_SEARCH) != 0
#define USE_O_SEARCH
#endif
#define DIR "dir"
#define FILE "dir/o_search"
#define BASEFILE "o_search"
ATF_TC(o_search_perm1);
ATF_TC_HEAD(o_search_perm1, tc)
{
atf_tc_set_md_var(tc, "descr", "See that openat enforces search permission");
atf_tc_set_md_var(tc, "require.user", "unprivileged");
}
ATF_TC_BODY(o_search_perm1, tc)
{
int dfd;
int fd;
ATF_REQUIRE(mkdir(DIR, 0755) == 0);
ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(fchmod(dfd, 644) == 0);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) == -1);
ATF_REQUIRE(errno == EACCES);
ATF_REQUIRE(close(dfd) == 0);
}
#ifdef USE_O_SEARCH
ATF_TC(o_search_root_flag1);
ATF_TC_HEAD(o_search_root_flag1, tc)
{
atf_tc_set_md_var(tc, "descr", "See that root openat honours O_SEARCH");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(o_search_root_flag1, tc)
{
int dfd;
int fd;
ATF_REQUIRE(mkdir(DIR, 0755) == 0);
ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE((dfd = open(DIR, O_RDONLY|O_SEARCH, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(fchmod(dfd, 644) == 0);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(fchmod(dfd, 444) == 0);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE(close(dfd) == 0);
}
ATF_TC(o_search_unpriv_flag1);
ATF_TC_HEAD(o_search_unpriv_flag1, tc)
{
atf_tc_set_md_var(tc, "descr", "See that openat honours O_SEARCH");
atf_tc_set_md_var(tc, "require.user", "unprivileged");
}
ATF_TC_BODY(o_search_unpriv_flag1, tc)
{
int dfd;
int fd;
ATF_REQUIRE(mkdir(DIR, 0755) == 0);
ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE((dfd = open(DIR, O_RDONLY|O_SEARCH, 0)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(fchmod(dfd, 644) == 0);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE(fchmod(dfd, 444) == 0);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) != -1);
ATF_REQUIRE(close(dfd) == 0);
}
#endif /* USE_O_SEARCH */
ATF_TC(o_search_perm2);
ATF_TC_HEAD(o_search_perm2, tc)
{
atf_tc_set_md_var(tc, "descr", "See that faccessat enforces search permission");
atf_tc_set_md_var(tc, "require.user", "unprivileged");
}
ATF_TC_BODY(o_search_perm2, tc)
{
int dfd;
int fd;
ATF_REQUIRE(mkdir(DIR, 0755) == 0);
ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
ATF_REQUIRE(fchmod(dfd, 644) == 0);
ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == -1);
ATF_REQUIRE(errno == EACCES);
ATF_REQUIRE(close(dfd) == 0);
}
#ifdef USE_O_SEARCH
ATF_TC(o_search_root_flag2);
ATF_TC_HEAD(o_search_root_flag2, tc)
{
atf_tc_set_md_var(tc, "descr", "See that root fstatat honours O_SEARCH");
atf_tc_set_md_var(tc, "require.user", "root");
}
ATF_TC_BODY(o_search_root_flag2, tc)
{
int dfd;
int fd;
ATF_REQUIRE(mkdir(DIR, 0755) == 0);
ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE((dfd = open(DIR, O_RDONLY|O_SEARCH, 0)) != -1);
ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
ATF_REQUIRE(fchmod(dfd, 644) == 0);
ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
ATF_REQUIRE(fchmod(dfd, 444) == 0);
ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
ATF_REQUIRE(close(dfd) == 0);
}
ATF_TC(o_search_unpriv_flag2);
ATF_TC_HEAD(o_search_unpriv_flag2, tc)
{
atf_tc_set_md_var(tc, "descr", "See that fstatat honours O_SEARCH");
atf_tc_set_md_var(tc, "require.user", "unprivileged");
}
ATF_TC_BODY(o_search_unpriv_flag2, tc)
{
int dfd;
int fd;
ATF_REQUIRE(mkdir(DIR, 0755) == 0);
ATF_REQUIRE((fd = open(FILE, O_CREAT|O_RDWR, 0644)) != -1);
ATF_REQUIRE(close(fd) == 0);
ATF_REQUIRE((dfd = open(DIR, O_RDONLY|O_SEARCH, 0)) != -1);
ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
ATF_REQUIRE(fchmod(dfd, 644) == 0);
ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
ATF_REQUIRE(fchmod(dfd, 444) == 0);
ATF_REQUIRE(faccessat(dfd, BASEFILE, W_OK, 0) == 0);
ATF_REQUIRE(close(dfd) == 0);
}
#endif /* USE_O_SEARCH */
ATF_TC(o_search_notdir);
ATF_TC_HEAD(o_search_notdir, tc)
{
atf_tc_set_md_var(tc, "descr", "See that openat fails with non dir fd");
}
ATF_TC_BODY(o_search_notdir, tc)
{
int dfd;
int fd;
ATF_REQUIRE(mkdir(DIR, 0755) == 0);
ATF_REQUIRE((dfd = open(FILE, O_CREAT|O_RDWR|O_SEARCH, 0644)) != -1);
ATF_REQUIRE((fd = openat(dfd, BASEFILE, O_RDWR, 0)) == -1);
ATF_REQUIRE(errno == ENOTDIR);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, o_search_perm1);
#ifdef USE_O_SEARCH
ATF_TP_ADD_TC(tp, o_search_root_flag1);
ATF_TP_ADD_TC(tp, o_search_unpriv_flag1);
#endif
ATF_TP_ADD_TC(tp, o_search_perm2);
#ifdef USE_O_SEARCH
ATF_TP_ADD_TC(tp, o_search_root_flag2);
ATF_TP_ADD_TC(tp, o_search_unpriv_flag2);
#endif
ATF_TP_ADD_TC(tp, o_search_notdir);
return atf_no_error();
}
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