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b57adc94 ZJS |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2 | ||
3 | #include "alloc-util.h" | |
4 | #include "fd-util.h" | |
5 | #include "escape.h" | |
6 | #include "libmount-util.h" | |
7 | #include "tests.h" | |
8 | ||
9 | static void test_libmount_unescaping_one( | |
10 | const char *title, | |
11 | const char *string, | |
12 | bool may_fail, | |
13 | const char *expected_source, | |
14 | const char *expected_target) { | |
15 | /* A test for libmount really */ | |
16 | int r; | |
17 | ||
18 | log_info("/* %s %s */", __func__, title); | |
19 | ||
20 | _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL; | |
21 | _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL; | |
22 | _cleanup_fclose_ FILE *f = NULL; | |
23 | ||
b57adc94 ZJS |
24 | f = fmemopen((char*) string, strlen(string), "re"); |
25 | assert_se(f); | |
26 | ||
e2857b3d | 27 | assert_se(libmount_parse(title, f, &table, &iter) >= 0); |
b57adc94 ZJS |
28 | |
29 | struct libmnt_fs *fs; | |
30 | const char *source, *target; | |
31 | _cleanup_free_ char *x = NULL, *cs = NULL, *s = NULL, *ct = NULL, *t = NULL; | |
32 | ||
33 | /* We allow this call and the checks below to fail in some cases. See the case definitions below. */ | |
34 | ||
35 | r = mnt_table_next_fs(table, iter, &fs); | |
36 | if (r != 0 && may_fail) { | |
37 | log_error_errno(r, "mnt_table_next_fs failed: %m"); | |
38 | return; | |
39 | } | |
40 | assert_se(r == 0); | |
41 | ||
42 | assert_se(x = cescape(string)); | |
43 | ||
44 | assert_se(source = mnt_fs_get_source(fs)); | |
45 | assert_se(target = mnt_fs_get_target(fs)); | |
46 | ||
47 | assert_se(cs = cescape(source)); | |
48 | assert_se(ct = cescape(target)); | |
49 | ||
50 | assert_se(cunescape(source, UNESCAPE_RELAX, &s) >= 0); | |
51 | assert_se(cunescape(target, UNESCAPE_RELAX, &t) >= 0); | |
52 | ||
53 | log_info("from '%s'", x); | |
54 | log_info("source: '%s'", source); | |
55 | log_info("source: '%s'", cs); | |
56 | log_info("source: '%s'", s); | |
57 | log_info("expected: '%s'", strna(expected_source)); | |
58 | log_info("target: '%s'", target); | |
59 | log_info("target: '%s'", ct); | |
60 | log_info("target: '%s'", t); | |
61 | log_info("expected: '%s'", strna(expected_target)); | |
62 | ||
63 | assert_se(may_fail || streq(source, expected_source)); | |
64 | assert_se(may_fail || streq(target, expected_target)); | |
65 | ||
66 | assert_se(mnt_table_next_fs(table, iter, &fs) == 1); | |
67 | } | |
68 | ||
69 | static void test_libmount_unescaping(void) { | |
70 | test_libmount_unescaping_one( | |
71 | "escaped space + utf8", | |
72 | "729 38 0:59 / /tmp/„zupa\\040zębowa” rw,relatime shared:395 - tmpfs die\\040Brühe rw,seclabel", | |
73 | false, | |
74 | "die Brühe", | |
75 | "/tmp/„zupa zębowa”" | |
76 | ); | |
77 | ||
78 | test_libmount_unescaping_one( | |
79 | "escaped newline", | |
80 | "729 38 0:59 / /tmp/x\\012y rw,relatime shared:395 - tmpfs newline rw,seclabel", | |
81 | false, | |
82 | "newline", | |
83 | "/tmp/x\ny" | |
84 | ); | |
85 | ||
86 | /* The result of "mount -t tmpfs '' /tmp/emptysource". | |
87 | * This will fail with libmount <= v2.33. | |
88 | * See https://github.com/karelzak/util-linux/commit/18a52a5094. | |
89 | */ | |
90 | test_libmount_unescaping_one( | |
91 | "empty source", | |
92 | "760 38 0:60 / /tmp/emptysource rw,relatime shared:410 - tmpfs rw,seclabel", | |
93 | true, | |
94 | "", | |
95 | "/tmp/emptysource" | |
96 | ); | |
97 | ||
98 | /* The kernel leaves \r as is. | |
99 | * Also see https://github.com/karelzak/util-linux/issues/780. | |
100 | */ | |
101 | test_libmount_unescaping_one( | |
102 | "foo\\rbar", | |
103 | "790 38 0:61 / /tmp/foo\rbar rw,relatime shared:425 - tmpfs tmpfs rw,seclabel", | |
104 | true, | |
105 | "tmpfs", | |
106 | "/tmp/foo\rbar" | |
107 | ); | |
108 | } | |
109 | ||
110 | int main(int argc, char *argv[]) { | |
111 | test_setup_logging(LOG_DEBUG); | |
112 | ||
113 | test_libmount_unescaping(); | |
114 | return 0; | |
115 | } |