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
42 ATF_TC(getpath_vnode);
ATF_TC_HEAD(getpath_vnode,tc)43 ATF_TC_HEAD(getpath_vnode, tc)
44 {
45
46 atf_tc_set_md_var(tc, "descr", "Checks fcntl(2) F_GETPATH for vnodes");
47 }
48
49 static 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
ATF_TC_BODY(getpath_vnode,tc)61 ATF_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
85 ATF_TC(getpath_memfd);
ATF_TC_HEAD(getpath_memfd,tc)86 ATF_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 }
94 static 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
ATF_TC_BODY(getpath_memfd,tc)104 ATF_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);
122 next: close(fd);
123 }
124 }
125
ATF_TP_ADD_TCS(tp)126 ATF_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