1 /*
2 * Copyright (C) 2012 Red Hat, Inc.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of version 2 of the GNU General Public
6 * License as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it
13 * is free of the rightful claim of any third person regarding
14 * infringement or the like. Any license provided herein, whether
15 * implied or otherwise, applies only to this software file. Patent
16 * licenses, if any, provided herein do not apply to combinations of
17 * this program with other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 * 02110-1301, USA.
23 */
24
25 /*
26 * setxattr(2) to immutable and append-only files should get EPERM
27 *
28 * There are 2 test cases:
29 * 1. Set attribute to a immutable file, setxattr(2) should return -1
30 * and set errno to EPERM
31 * 2. Set attribute to a append-only file, setxattr(2) should return
32 * -1 and set errno to EPERM
33 */
34
35 #include "config.h"
36 #include <sys/ioctl.h>
37 #include <sys/types.h>
38 #include <sys/stat.h>
39 #include <sys/wait.h>
40 #include <errno.h>
41 #include <fcntl.h>
42 #include <unistd.h>
43 #include <signal.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #ifdef HAVE_ATTR_XATTR_H
48 #include <attr/xattr.h>
49 #endif
50 #include <linux/fs.h>
51
52 #include "test.h"
53
54 char *TCID = "setxattr03";
55
56 #if defined HAVE_ATTR_XATTR_H && defined HAVE_FS_IOC_FLAGS
57 #define XATTR_TEST_KEY "user.testkey"
58 #define XATTR_TEST_VALUE "this is a test value"
59 #define XATTR_TEST_VALUE_SIZE (sizeof(XATTR_TEST_VALUE) - 1)
60
61 #define IMMU_FILE "setxattr03immutable"
62 #define APPEND_FILE "setxattr03appendonly"
63
64 #define set_immutable_on(fd) fsetflag(fd, 1, 1)
65 #define set_immutable_off(fd) fsetflag(fd, 0, 1)
66 #define set_append_on(fd) fsetflag(fd, 1, 0)
67 #define set_append_off(fd) fsetflag(fd, 0, 0)
68
69 struct test_case {
70 char *desc;
71 char *fname;
72 char *key;
73 char *value;
74 size_t size;
75 int flags;
76 int exp_err;
77 };
78 static struct test_case tc[] = {
79 { /* case 00, set attr to immutable file */
80 .desc = "Set attr to immutable file",
81 .fname = IMMU_FILE,
82 .key = XATTR_TEST_KEY,
83 .value = XATTR_TEST_VALUE,
84 .size = XATTR_TEST_VALUE_SIZE,
85 .flags = XATTR_CREATE,
86 .exp_err = EPERM,
87 },
88 { /* case 01, set attr to append-only file */
89 .desc = "Set attr to append-only file",
90 .fname = APPEND_FILE,
91 .key = XATTR_TEST_KEY,
92 .value = XATTR_TEST_VALUE,
93 .size = XATTR_TEST_VALUE_SIZE,
94 .flags = XATTR_CREATE,
95 .exp_err = EPERM,
96 },
97 };
98
99 static void setup(void);
100 static void cleanup(void);
101
102 static int immu_fd;
103 static int append_fd;
104
105 int TST_TOTAL = sizeof(tc) / sizeof(tc[0]);
106
main(int argc,char * argv[])107 int main(int argc, char *argv[])
108 {
109 int lc;
110 int i;
111
112 tst_parse_opts(argc, argv, NULL, NULL);
113
114 setup();
115
116 for (lc = 0; TEST_LOOPING(lc); lc++) {
117 tst_count = 0;
118
119 for (i = 0; i < TST_TOTAL; i++) {
120 TEST(setxattr(tc[i].fname, tc[i].key, tc[i].value,
121 tc[i].size, tc[i].flags));
122
123 if (TEST_ERRNO == tc[i].exp_err) {
124 tst_resm(TPASS | TTERRNO, "%s", tc[i].desc);
125 } else {
126 tst_resm(TFAIL | TTERRNO, "%s - expected errno"
127 " %d - Got", tc[i].desc,
128 tc[i].exp_err);
129 }
130 }
131 }
132
133 cleanup();
134 tst_exit();
135 }
136
fsetflag(int fd,int on,int immutable)137 static int fsetflag(int fd, int on, int immutable)
138 {
139 int fsflags = 0;
140 int fsfl;
141
142 if (ioctl(fd, FS_IOC_GETFLAGS, &fsflags) < 0)
143 return 1;
144
145 if (immutable)
146 fsfl = FS_IMMUTABLE_FL;
147 else
148 fsfl = FS_APPEND_FL;
149
150 if (on)
151 fsflags |= fsfl;
152 else
153 fsflags &= ~fsfl;
154
155 if (ioctl(fd, FS_IOC_SETFLAGS, &fsflags) < 0)
156 return 1;
157
158 return 0;
159 }
160
setup(void)161 static void setup(void)
162 {
163 int fd;
164
165 tst_require_root();
166
167 tst_tmpdir();
168
169 /* Test for xattr support */
170 fd = creat("testfile", 0644);
171 if (fd == -1)
172 tst_brkm(TBROK | TERRNO, cleanup, "Create testfile failed");
173 close(fd);
174 if (setxattr("testfile", "user.test", "test", 4, XATTR_CREATE) == -1)
175 if (errno == ENOTSUP)
176 tst_brkm(TCONF, cleanup, "No xattr support in fs or "
177 "fs mounted without user_xattr option");
178 unlink("testfile");
179
180 /* Create test files and set file immutable or append-only */
181 immu_fd = creat(IMMU_FILE, 0644);
182 if (immu_fd == -1)
183 tst_brkm(TBROK | TERRNO, cleanup, "Create test file(%s) failed",
184 IMMU_FILE);
185 if (set_immutable_on(immu_fd))
186 tst_brkm(TBROK | TERRNO, cleanup, "Set %s immutable failed",
187 IMMU_FILE);
188
189 append_fd = creat(APPEND_FILE, 0644);
190 if (append_fd == -1)
191 tst_brkm(TBROK | TERRNO, cleanup, "Create test file(%s) failed",
192 APPEND_FILE);
193 if (set_append_on(append_fd))
194 tst_brkm(TBROK | TERRNO, cleanup, "Set %s append-only failed",
195 APPEND_FILE);
196
197 TEST_PAUSE;
198 }
199
cleanup(void)200 static void cleanup(void)
201 {
202 if ((immu_fd > 0) && set_immutable_off(immu_fd))
203 tst_resm(TWARN | TERRNO, "Unset %s immutable failed",
204 IMMU_FILE);
205 if ((append_fd > 0) && set_append_off(append_fd))
206 tst_resm(TWARN | TERRNO, "Unset %s append-only failed",
207 APPEND_FILE);
208 close(immu_fd);
209 close(append_fd);
210
211 tst_rmdir();
212 }
213 #else
main(void)214 int main(void)
215 {
216 tst_brkm(TCONF, NULL, "<attr/xattr.h> not present or FS_IOC_FLAGS "
217 "missing in <linux/fs.h>");
218 }
219 #endif /* defined HAVE_ATTR_XATTR_H && defined HAVE_FS_IOC_FLAGS */
220