37 	int err, map;  in fn()  local
39 	err = unshare(CLONE_NEWNS);  in fn()
40 	if (!ASSERT_OK(err, "unshare"))  in fn()
43 	err = mount("", "/", "", MS_REC | MS_PRIVATE, NULL);  in fn()
44 	if (!ASSERT_OK(err, "mount /"))  in fn()
47 	err =  mkdir(TDIR, 0777);  in fn()
51 	if ((err && errno != EEXIST) && !ASSERT_OK(err, "mkdir " TDIR))  in fn()
54 	err = mount("none", TDIR, "tmpfs", 0, NULL);  in fn()
55 	if (!ASSERT_OK(err, "mount tmpfs"))  in fn()
58 	err = mkdir(TDIR "/fs1", 0777);  in fn()
59 	if (!ASSERT_OK(err, "mkdir " TDIR "/fs1"))  in fn()
61 	err = mkdir(TDIR "/fs2", 0777);  in fn()
62 	if (!ASSERT_OK(err, "mkdir " TDIR "/fs2"))  in fn()
65 	err = mount("bpf", TDIR "/fs1", "bpf", 0, NULL);  in fn()
66 	if (!ASSERT_OK(err, "mount bpffs " TDIR "/fs1"))  in fn()
68 	err = mount("bpf", TDIR "/fs2", "bpf", 0, NULL);  in fn()
69 	if (!ASSERT_OK(err, "mount bpffs " TDIR "/fs2"))  in fn()
72 	err = read_iter(TDIR "/fs1/maps.debug");  in fn()
73 	if (!ASSERT_OK(err, "reading " TDIR "/fs1/maps.debug"))  in fn()
75 	err = read_iter(TDIR "/fs2/progs.debug");  in fn()
76 	if (!ASSERT_OK(err, "reading " TDIR "/fs2/progs.debug"))  in fn()
79 	err = mkdir(TDIR "/fs1/a", 0777);  in fn()
80 	if (!ASSERT_OK(err, "creating " TDIR "/fs1/a"))  in fn()
82 	err = mkdir(TDIR "/fs1/a/1", 0777);  in fn()
83 	if (!ASSERT_OK(err, "creating " TDIR "/fs1/a/1"))  in fn()
85 	err = mkdir(TDIR "/fs1/b", 0777);  in fn()
86 	if (!ASSERT_OK(err, "creating " TDIR "/fs1/b"))  in fn()
92 	err = bpf_obj_pin(map, TDIR "/fs1/c");  in fn()
93 	if (!ASSERT_OK(err, "pin map"))  in fn()
98 	err = stat(TDIR "/fs1/a", &a);  in fn()
99 	if (!ASSERT_OK(err, "stat(" TDIR "/fs1/a)"))  in fn()
101 	err = renameat2(0, TDIR "/fs1/a", 0, TDIR "/fs1/b", RENAME_EXCHANGE);  in fn()
102 	if (!ASSERT_OK(err, "renameat2(/fs1/a, /fs1/b, RENAME_EXCHANGE)"))  in fn()
104 	err = stat(TDIR "/fs1/b", &b);  in fn()
105 	if (!ASSERT_OK(err, "stat(" TDIR "/fs1/b)"))  in fn()
109 	err = access(TDIR "/fs1/b/1", F_OK);  in fn()
110 	if (!ASSERT_OK(err, "access(" TDIR "/fs1/b/1)"))  in fn()
114 	err = stat(TDIR "/fs1/c", &c);  in fn()
115 	if (!ASSERT_OK(err, "stat(" TDIR "/fs1/map)"))  in fn()
117 	err = renameat2(0, TDIR "/fs1/c", 0, TDIR "/fs1/b", RENAME_EXCHANGE);  in fn()
118 	if (!ASSERT_OK(err, "renameat2(/fs1/c, /fs1/b, RENAME_EXCHANGE)"))  in fn()
120 	err = stat(TDIR "/fs1/b", &b);  in fn()
121 	if (!ASSERT_OK(err, "stat(" TDIR "/fs1/b)"))  in fn()
125 	err = access(TDIR "/fs1/c/1", F_OK);  in fn()
126 	if (!ASSERT_OK(err, "access(" TDIR "/fs1/c/1)"))  in fn()
130 	err = renameat2(0, TDIR "/fs1/b", 0, TDIR "/fs1/a", RENAME_NOREPLACE);  in fn()
131 	if (!ASSERT_ERR(err, "renameat2(RENAME_NOREPLACE)")) {  in fn()
132 		err = -EINVAL;  in fn()
135 	err = access(TDIR "/fs1/b", F_OK);  in fn()
136 	if (!ASSERT_OK(err, "access(" TDIR "/fs1/b)"))  in fn()
146 	exit(err);  in fn()
151 	int err, duration = 0, status = 0;  in test_test_bpffs()  local
159 	err = waitpid(pid, &status, 0);  in test_test_bpffs()
160 	if (CHECK(err == -1 && errno != ECHILD, "waitpid", "failed %d", errno))  in test_test_bpffs()