Line data Source code
1 : /* SPDX-License-Identifier: LGPL-2.1+ */
2 :
3 : #include <sys/xattr.h>
4 : #include <unistd.h>
5 :
6 : #include "alloc-util.h"
7 : #include "chown-recursive.h"
8 : #include "log.h"
9 : #include "rm-rf.h"
10 : #include "string-util.h"
11 : #include "tests.h"
12 : #include "tmpfile-util.h"
13 :
14 : static const uint8_t acl[] = {
15 : 0x02, 0x00, 0x00, 0x00, 0x01, 0x00, 0x07, 0x00,
16 : 0xff, 0xff, 0xff, 0xff, 0x02, 0x00, 0x07, 0x00,
17 : 0x02, 0x00, 0x00, 0x00, 0x04, 0x00, 0x07, 0x00,
18 : 0xff, 0xff, 0xff, 0xff, 0x10, 0x00, 0x07, 0x00,
19 : 0xff, 0xff, 0xff, 0xff, 0x20, 0x00, 0x05, 0x00,
20 : 0xff, 0xff, 0xff, 0xff,
21 : };
22 :
23 : static const uint8_t default_acl[] = {
24 : 0x02, 0x00, 0x00, 0x00, 0x01, 0x00, 0x07, 0x00,
25 : 0xff, 0xff, 0xff, 0xff, 0x04, 0x00, 0x07, 0x00,
26 : 0xff, 0xff, 0xff, 0xff, 0x08, 0x00, 0x07, 0x00,
27 : 0x04, 0x00, 0x00, 0x00, 0x10, 0x00, 0x07, 0x00,
28 : 0xff, 0xff, 0xff, 0xff, 0x20, 0x00, 0x05, 0x00,
29 : 0xff, 0xff, 0xff, 0xff,
30 : };
31 :
32 0 : static bool has_xattr(const char *p) {
33 : char buffer[sizeof(acl) * 4];
34 :
35 0 : if (lgetxattr(p, "system.posix_acl_access", buffer, sizeof(buffer)) < 0) {
36 0 : if (IN_SET(errno, EOPNOTSUPP, ENOTTY, ENODATA, ENOSYS))
37 0 : return false;
38 : }
39 :
40 0 : return true;
41 : }
42 :
43 0 : static void test_chown_recursive(void) {
44 0 : _cleanup_(rm_rf_physical_and_freep) char *t = NULL;
45 : struct stat st;
46 : const char *p;
47 0 : const uid_t uid = getuid();
48 0 : const gid_t gid = getgid();
49 :
50 0 : umask(022);
51 0 : assert_se(mkdtemp_malloc(NULL, &t) >= 0);
52 :
53 0 : p = strjoina(t, "/dir");
54 0 : assert_se(mkdir(p, 0777) >= 0);
55 0 : assert_se(lstat(p, &st) >= 0);
56 0 : assert_se(S_ISDIR(st.st_mode));
57 0 : assert_se((st.st_mode & 07777) == 0755);
58 0 : assert_se(st.st_uid == uid);
59 0 : assert_se(st.st_gid == gid);
60 0 : assert_se(!has_xattr(p));
61 :
62 0 : p = strjoina(t, "/dir/symlink");
63 0 : assert_se(symlink("../../", p) >= 0);
64 0 : assert_se(lstat(p, &st) >= 0);
65 0 : assert_se(S_ISLNK(st.st_mode));
66 0 : assert_se((st.st_mode & 07777) == 0777);
67 0 : assert_se(st.st_uid == uid);
68 0 : assert_se(st.st_gid == gid);
69 0 : assert_se(!has_xattr(p));
70 :
71 0 : p = strjoina(t, "/dir/reg");
72 0 : assert_se(mknod(p, S_IFREG|0777, 0) >= 0);
73 0 : assert_se(lstat(p, &st) >= 0);
74 0 : assert_se(S_ISREG(st.st_mode));
75 0 : assert_se((st.st_mode & 07777) == 0755);
76 0 : assert_se(st.st_uid == uid);
77 0 : assert_se(st.st_gid == gid);
78 0 : assert_se(!has_xattr(p));
79 :
80 0 : p = strjoina(t, "/dir/sock");
81 0 : assert_se(mknod(p, S_IFSOCK|0777, 0) >= 0);
82 0 : assert_se(lstat(p, &st) >= 0);
83 0 : assert_se(S_ISSOCK(st.st_mode));
84 0 : assert_se((st.st_mode & 07777) == 0755);
85 0 : assert_se(st.st_uid == uid);
86 0 : assert_se(st.st_gid == gid);
87 0 : assert_se(!has_xattr(p));
88 :
89 0 : p = strjoina(t, "/dir/fifo");
90 0 : assert_se(mknod(p, S_IFIFO|0777, 0) >= 0);
91 0 : assert_se(lstat(p, &st) >= 0);
92 0 : assert_se(S_ISFIFO(st.st_mode));
93 0 : assert_se((st.st_mode & 07777) == 0755);
94 0 : assert_se(st.st_uid == uid);
95 0 : assert_se(st.st_gid == gid);
96 0 : assert_se(!has_xattr(p));
97 :
98 : /* We now apply an xattr to the dir, and check it again */
99 0 : p = strjoina(t, "/dir");
100 0 : assert_se(setxattr(p, "system.posix_acl_access", acl, sizeof(acl), 0) >= 0);
101 0 : assert_se(setxattr(p, "system.posix_acl_default", default_acl, sizeof(default_acl), 0) >= 0);
102 0 : assert_se(lstat(p, &st) >= 0);
103 0 : assert_se(S_ISDIR(st.st_mode));
104 0 : assert_se((st.st_mode & 07777) == 0775); /* acl change changed the mode too */
105 0 : assert_se(st.st_uid == uid);
106 0 : assert_se(st.st_gid == gid);
107 0 : assert_se(has_xattr(p));
108 :
109 0 : assert_se(path_chown_recursive(t, 1, 2, 07777) >= 0);
110 :
111 0 : p = strjoina(t, "/dir");
112 0 : assert_se(lstat(p, &st) >= 0);
113 0 : assert_se(S_ISDIR(st.st_mode));
114 0 : assert_se((st.st_mode & 07777) == 0775);
115 0 : assert_se(st.st_uid == 1);
116 0 : assert_se(st.st_gid == 2);
117 0 : assert_se(!has_xattr(p));
118 :
119 0 : p = strjoina(t, "/dir/symlink");
120 0 : assert_se(lstat(p, &st) >= 0);
121 0 : assert_se(S_ISLNK(st.st_mode));
122 0 : assert_se((st.st_mode & 07777) == 0777);
123 0 : assert_se(st.st_uid == 1);
124 0 : assert_se(st.st_gid == 2);
125 0 : assert_se(!has_xattr(p));
126 :
127 0 : p = strjoina(t, "/dir/reg");
128 0 : assert_se(lstat(p, &st) >= 0);
129 0 : assert_se(S_ISREG(st.st_mode));
130 0 : assert_se((st.st_mode & 07777) == 0755);
131 0 : assert_se(st.st_uid == 1);
132 0 : assert_se(st.st_gid == 2);
133 0 : assert_se(!has_xattr(p));
134 :
135 0 : p = strjoina(t, "/dir/sock");
136 0 : assert_se(lstat(p, &st) >= 0);
137 0 : assert_se(S_ISSOCK(st.st_mode));
138 0 : assert_se((st.st_mode & 07777) == 0755);
139 0 : assert_se(st.st_uid == 1);
140 0 : assert_se(st.st_gid == 2);
141 0 : assert_se(!has_xattr(p));
142 :
143 0 : p = strjoina(t, "/dir/fifo");
144 0 : assert_se(lstat(p, &st) >= 0);
145 0 : assert_se(S_ISFIFO(st.st_mode));
146 0 : assert_se((st.st_mode & 07777) == 0755);
147 0 : assert_se(st.st_uid == 1);
148 0 : assert_se(st.st_gid == 2);
149 0 : assert_se(!has_xattr(p));
150 0 : }
151 :
152 1 : int main(int argc, char *argv[]) {
153 1 : test_setup_logging(LOG_DEBUG);
154 :
155 1 : if (geteuid() != 0)
156 1 : return log_tests_skipped("not running as root");
157 :
158 0 : test_chown_recursive();
159 :
160 0 : return EXIT_SUCCESS;
161 : }
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