1 /*-
2 * Copyright (c) 2025 Klara, Inc.
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7 #include <sys/stat.h>
8
9 #include <fcntl.h>
10 #include <fts.h>
11
12 #include <atf-c.h>
13
14 /*
15 * Create two directories with three files each in lexicographical order,
16 * then call FTS with a sort block that sorts in reverse lexicographical
17 * order. This has the least chance of getting a false positive due to
18 * differing file system semantics. UFS will return the files in the
19 * order they were created while ZFS will sort them lexicographically; in
20 * both cases, the order we expect is the reverse.
21 */
22 ATF_TC(fts_blocks_test);
ATF_TC_HEAD(fts_blocks_test,tc)23 ATF_TC_HEAD(fts_blocks_test, tc)
24 {
25 atf_tc_set_md_var(tc, "descr",
26 "Test FTS with a block in lieu of a comparison function");
27 }
ATF_TC_BODY(fts_blocks_test,tc)28 ATF_TC_BODY(fts_blocks_test, tc)
29 {
30 char *args[] = {
31 "bar", "foo", NULL
32 };
33 char *paths[] = {
34 "foo", "z", "y", "x", "foo",
35 "bar", "c", "b", "a", "bar",
36 NULL
37 };
38 char **expect = paths;
39 FTS *fts;
40 FTSENT *ftse;
41
42 ATF_REQUIRE_EQ(0, mkdir("bar", 0755));
43 ATF_REQUIRE_EQ(0, close(creat("bar/a", 0644)));
44 ATF_REQUIRE_EQ(0, close(creat("bar/b", 0644)));
45 ATF_REQUIRE_EQ(0, close(creat("bar/c", 0644)));
46 ATF_REQUIRE_EQ(0, mkdir("foo", 0755));
47 ATF_REQUIRE_EQ(0, close(creat("foo/x", 0644)));
48 ATF_REQUIRE_EQ(0, close(creat("foo/y", 0644)));
49 ATF_REQUIRE_EQ(0, close(creat("foo/z", 0644)));
50 fts = fts_open_b(args, 0,
51 ^(const FTSENT * const *a, const FTSENT * const *b) {
52 return (strcmp((*b)->fts_name, (*a)->fts_name));
53 });
54 ATF_REQUIRE_MSG(fts != NULL, "fts_open_b(): %m");
55 while ((ftse = fts_read(fts)) != NULL && *expect != NULL) {
56 ATF_CHECK_STREQ(*expect, ftse->fts_name);
57 expect++;
58 }
59 ATF_CHECK_EQ(NULL, ftse);
60 ATF_CHECK_EQ(NULL, *expect);
61 ATF_REQUIRE_EQ_MSG(0, fts_close(fts), "fts_close(): %m");
62 }
63
ATF_TP_ADD_TCS(tp)64 ATF_TP_ADD_TCS(tp)
65 {
66 ATF_TP_ADD_TC(tp, fts_blocks_test);
67 return (atf_no_error());
68 }
69