1/*	$NetBSD: t_fcntl.c,v 1.4 2023/08/05 08:05:16 riastradh Exp $	*/
2
3/*-
4 * Copyright (c) 2019 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/param.h>
33#include <sys/types.h>
34#include <sys/mman.h>
35#include <atf-c.h>
36#include <fcntl.h>
37#include <errno.h>
38#include <stdlib.h>
39#include <string.h>
40#include <unistd.h>
41
42ATF_TC(getpath_vnode);
43ATF_TC_HEAD(getpath_vnode, tc)
44{
45
46	atf_tc_set_md_var(tc, "descr", "Checks fcntl(2) F_GETPATH for vnodes");
47}
48
49static const struct {
50	const char *name;
51	int rv;
52} files[] = {
53	{ "/bin/ls", 0 },
54	{ "/bin/sh", 0 },
55	{ "/dev/zero", 0 },
56	{ "/dev/null", 0 },
57	{ "/sbin/chown", 0 },
58	{ "/", ENOENT },
59};
60
61ATF_TC_BODY(getpath_vnode, tc)
62{
63	char path[MAXPATHLEN];
64	int fd, rv;
65
66	for (size_t i = 0; i < __arraycount(files); i++) {
67		fd = open(files[i].name, O_RDONLY|O_NOFOLLOW);
68		ATF_REQUIRE_MSG(fd != -1, "Cannot open `%s'", files[i].name);
69		rv = fcntl(fd, F_GETPATH, path);
70		if (files[i].rv) {
71			ATF_REQUIRE_MSG(errno == files[i].rv,
72			    "Unexpected error %d != %d for `%s'", errno,
73			    files[i].rv, files[i].name);
74		} else {
75			ATF_REQUIRE_MSG(rv != -1,
76			    "Can't get path for `%s' (%s)", files[i].name,
77			    strerror(errno));
78			ATF_REQUIRE_MSG(strcmp(files[i].name, path) == 0,
79			    "Bad name `%s' != `%s'", path, files[i].name);
80		close(fd);
81		}
82	}
83}
84
85ATF_TC(getpath_memfd);
86ATF_TC_HEAD(getpath_memfd, tc)
87{
88
89	atf_tc_set_md_var(tc, "descr",
90	    "Checks fcntl(2) F_GETPATH for fds created by memfd_create");
91}
92
93#define	MEMFD_NAME(name)	{ name, "memfd:" name }
94static const struct {
95	const char *bare;
96	const char *prefixed;
97} memfd_names[] = {
98	MEMFD_NAME(""),
99	MEMFD_NAME("some text"),
100	MEMFD_NAME("memfd:"),
101	MEMFD_NAME("../\\"),
102};
103
104ATF_TC_BODY(getpath_memfd, tc)
105{
106	char path[MAXPATHLEN];
107	int fd, rv;
108
109	for (size_t i = 0; i < __arraycount(memfd_names); i++) {
110		fd = memfd_create(memfd_names[i].bare, 0);
111		ATF_CHECK_MSG(fd != -1, "Failed to create memfd (%s)",
112		    strerror(errno));
113		if (fd == -1)
114			continue;
115		rv = fcntl(fd, F_GETPATH, path);
116		ATF_CHECK_MSG(rv != -1, "Can't get path `%s' (%s)",
117		    memfd_names[i].bare, strerror(errno));
118		if (rv == -1)
119			goto next;
120		ATF_CHECK_MSG(strcmp(memfd_names[i].prefixed, path) == 0,
121		    "Bad name `%s' != `%s'", path, memfd_names[i].prefixed);
122next:		close(fd);
123	}
124}
125
126ATF_TP_ADD_TCS(tp)
127{
128	ATF_TP_ADD_TC(tp, getpath_vnode);
129	ATF_TP_ADD_TC(tp, getpath_memfd);
130
131	return atf_no_error();
132}
133