2 * Copyright (c) 2005-2008 Robert N. M. Watson
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40 * Simple regression test for the creation and destruction of POSIX fifos in
41 * the file system name space. Using a specially created directory, create
42 * a fifo in it and check that the following properties are present, as
43 * specified in IEEE Std 1003.1, 2004 Edition:
45 * - When mkfifo() or mknod(S_IFIFO) is called, on success, a fifo is
48 * - On an error, no fifo is created. (XXX: Not tested)
50 * - The mode bits on the fifo are a product of combining the umask and
53 * - The fifo's owner will be the processes effective user ID. (XXX: Not
56 * - The fifo's group will be the parent directory's group or the effective
57 * group ID of the process. For historical reasons, BSD prefers the group
58 * ID of the process, so we will generate an error if it's not that. (XXX:
61 * - The st_atime, st_ctime, st_mtime of the fifo will be set appropriately,
62 * and st_ctime and st_mtime on the directory will be updated. (XXX: We
63 * test they are updated, not correct)
65 * - EEXIST is returned if the named file already exists.
67 * In addition, we check that we can unlink the fifo, and that if we do, it
70 * This test must run as root in order to usefully frob the process
71 * credential to test permission parts.
75 * All activity occurs within a temporary directory created early in the
78 static char temp_dir[PATH_MAX];
88 * Basic creation tests: verify that mkfifo(2) (or mknod(2)) creates a fifo,
89 * that the time stamps on the directory are updated, that if we try twice we
90 * get EEXIST, and that we can unlink it.
93 fifo_create_test(int use_mkfifo)
95 struct stat old_dirsb, dirsb, fifosb;
97 char path[] = "testfifo";
106 * Sleep to make sure that the time stamp on the directory will be
109 if (stat(".", &old_dirsb) < 0)
110 err(-1, "basic_create_test: %s: stat: %s", testname,
116 if (mkfifo(path, 0600) < 0)
117 err(-1, "basic_create_test: %s: %s", testname, path);
119 if (mknod(path, S_IFIFO | 0600, 0) < 0)
120 err(-1, "basic_create_test: %s: %s", testname, path);
123 if (stat(path, &fifosb) < 0) {
127 err(-1, "basic_create_test: %s: stat: %s", testname, path);
130 if (!(S_ISFIFO(fifosb.st_mode))) {
132 errx(-1, "basic_create_test: %s produced non-fifo",
137 if (mkfifo(path, 0600) == 0)
138 errx(-1, "basic_create_test: dup %s succeeded",
141 if (mknod(path, S_IFIFO | 0600, 0) == 0)
142 errx(-1, "basic_create_test: dup %s succeeded",
147 err(-1, "basic_create_test: dup %s unexpected error",
150 if (stat(".", &dirsb) < 0) {
154 err(-1, "basic_create_test: %s: stat: %s", testname,
158 if (old_dirsb.st_ctime == dirsb.st_ctime) {
160 errx(-1, "basic_create_test: %s: old_dirsb.st_ctime == "
161 "dirsb.st_ctime", testname);
164 if (old_dirsb.st_mtime == dirsb.st_mtime) {
166 errx(-1, "basic_create_test: %s: old_dirsb.st_mtime == "
167 "dirsb.st_mtime", testname);
170 if (unlink(path) < 0)
171 err(-1, "basic_create_test: %s: unlink: %s", testname, path);
173 if (stat(path, &fifosb) == 0)
174 errx(-1, "basic_create_test: %s: unlink failed to unlink",
177 err(-1, "basic_create_test: %s: unlink unexpected error",
182 * Having determined that basic create/remove/etc functionality is present
183 * for fifos, now make sure that the umask, requested permissions, and
184 * resulting mode are handled properly.
186 static const struct permission_test {
190 } permission_test[] = {
192 {0000, S_IRWXU, S_IFIFO | S_IRWXU},
193 {0000, S_IRWXU | S_IRWXG | S_IRWXO, S_IFIFO | S_IRWXU | S_IRWXG |
195 {0077, S_IRWXU, S_IFIFO | S_IRWXU},
196 {0077, S_IRWXU | S_IRWXG | S_IRWXO, S_IFIFO | S_IRWXU},
198 static const int permission_test_count = sizeof(permission_test) /
199 sizeof(struct permission_test);
202 fifo_permission_test(int use_mkfifo)
204 const struct permission_test *ptp;
205 mode_t __unused old_umask;
206 char path[] = "testfifo";
207 const char *testname;
216 old_umask = umask(0022);
217 for (i = 0; i < permission_test_count; i++) {
218 ptp = &permission_test[i];
220 umask(ptp->pt_umask);
222 if (mkfifo(path, ptp->pt_reqmode) < 0)
223 err(-1, "fifo_permission_test: %s: %08o "
224 "%08o %08o\n", testname, ptp->pt_umask,
225 ptp->pt_reqmode, ptp->pt_mode);
227 if (mknod(path, S_IFIFO | ptp->pt_reqmode, 0) < 0)
228 err(-1, "fifo_permission_test: %s: %08o "
229 "%08o %08o\n", testname, ptp->pt_umask,
230 ptp->pt_reqmode, ptp->pt_mode);
233 if (stat(path, &sb) < 0) {
237 err(-1, "fifo_permission_test: %s: %s", testname,
241 if (sb.st_mode != ptp->pt_mode) {
243 errx(-1, "fifo_permission_test: %s: %08o %08o %08o "
244 "got %08o", testname, ptp->pt_umask,
245 ptp->pt_reqmode, ptp->pt_mode, sb.st_mode);
248 if (unlink(path) < 0)
249 err(-1, "fifo_permission_test: %s: unlink: %s",
261 errx(-1, "must be run as root");
263 strcpy(temp_dir, "fifo_create.XXXXXXXXXXX");
264 if (mkdtemp(temp_dir) == NULL)
266 atexit(atexit_temp_dir);
268 if (chdir(temp_dir) < 0)
272 * Run each test twice, once with mknod(2) and a second time with
273 * mkfifo(2). Historically, BSD has not allowed mknod(2) to be used
274 * to create fifos, but the Single UNIX Specification requires it.
276 for (i = 0; i < 2; i++) {
278 fifo_permission_test(i);