2 * Copyright (c) 2005-2008 Robert N. M. Watson
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38 * Simple regression test for the creation and destruction of POSIX fifos in
39 * the file system name space. Using a specially created directory, create
40 * a fifo in it and check that the following properties are present, as
41 * specified in IEEE Std 1003.1, 2004 Edition:
43 * - When mkfifo() or mknod(S_IFIFO) is called, on success, a fifo is
46 * - On an error, no fifo is created. (XXX: Not tested)
48 * - The mode bits on the fifo are a product of combining the umask and
51 * - The fifo's owner will be the processes effective user ID. (XXX: Not
54 * - The fifo's group will be the parent directory's group or the effective
55 * group ID of the process. For historical reasons, BSD prefers the group
56 * ID of the process, so we will generate an error if it's not that. (XXX:
59 * - The st_atime, st_ctime, st_mtime of the fifo will be set appropriately,
60 * and st_ctime and st_mtime on the directory will be updated. (XXX: We
61 * test they are updated, not correct)
63 * - EEXIST is returned if the named file already exists.
65 * In addition, we check that we can unlink the fifo, and that if we do, it
68 * This test must run as root in order to usefully frob the process
69 * credential to test permission parts.
73 * All activity occurs within a temporary directory created early in the
76 static char temp_dir[PATH_MAX];
86 * Basic creation tests: verify that mkfifo(2) (or mknod(2)) creates a fifo,
87 * that the time stamps on the directory are updated, that if we try twice we
88 * get EEXIST, and that we can unlink it.
91 fifo_create_test(int use_mkfifo)
93 struct stat old_dirsb, dirsb, fifosb;
95 char path[] = "testfifo";
104 * Sleep to make sure that the time stamp on the directory will be
107 if (stat(".", &old_dirsb) < 0)
108 err(-1, "basic_create_test: %s: stat: %s", testname,
114 if (mkfifo(path, 0600) < 0)
115 err(-1, "basic_create_test: %s: %s", testname, path);
117 if (mknod(path, S_IFIFO | 0600, 0) < 0)
118 err(-1, "basic_create_test: %s: %s", testname, path);
121 if (stat(path, &fifosb) < 0) {
125 err(-1, "basic_create_test: %s: stat: %s", testname, path);
128 if (!(S_ISFIFO(fifosb.st_mode))) {
130 errx(-1, "basic_create_test: %s produced non-fifo",
135 if (mkfifo(path, 0600) == 0)
136 errx(-1, "basic_create_test: dup %s succeeded",
139 if (mknod(path, S_IFIFO | 0600, 0) == 0)
140 errx(-1, "basic_create_test: dup %s succeeded",
145 err(-1, "basic_create_test: dup %s unexpected error",
148 if (stat(".", &dirsb) < 0) {
152 err(-1, "basic_create_test: %s: stat: %s", testname,
156 if (old_dirsb.st_ctime == dirsb.st_ctime) {
158 errx(-1, "basic_create_test: %s: old_dirsb.st_ctime == "
159 "dirsb.st_ctime", testname);
162 if (old_dirsb.st_mtime == dirsb.st_mtime) {
164 errx(-1, "basic_create_test: %s: old_dirsb.st_mtime == "
165 "dirsb.st_mtime", testname);
168 if (unlink(path) < 0)
169 err(-1, "basic_create_test: %s: unlink: %s", testname, path);
171 if (stat(path, &fifosb) == 0)
172 errx(-1, "basic_create_test: %s: unlink failed to unlink",
175 err(-1, "basic_create_test: %s: unlink unexpected error",
180 * Having determined that basic create/remove/etc functionality is present
181 * for fifos, now make sure that the umask, requested permissions, and
182 * resulting mode are handled properly.
184 static const struct permission_test {
188 } permission_test[] = {
190 {0000, S_IRWXU, S_IFIFO | S_IRWXU},
191 {0000, S_IRWXU | S_IRWXG | S_IRWXO, S_IFIFO | S_IRWXU | S_IRWXG |
193 {0077, S_IRWXU, S_IFIFO | S_IRWXU},
194 {0077, S_IRWXU | S_IRWXG | S_IRWXO, S_IFIFO | S_IRWXU},
196 static const int permission_test_count = sizeof(permission_test) /
197 sizeof(struct permission_test);
200 fifo_permission_test(int use_mkfifo)
202 const struct permission_test *ptp;
203 mode_t __unused old_umask;
204 char path[] = "testfifo";
205 const char *testname;
214 old_umask = umask(0022);
215 for (i = 0; i < permission_test_count; i++) {
216 ptp = &permission_test[i];
218 umask(ptp->pt_umask);
220 if (mkfifo(path, ptp->pt_reqmode) < 0)
221 err(-1, "fifo_permission_test: %s: %08o "
222 "%08o %08o\n", testname, ptp->pt_umask,
223 ptp->pt_reqmode, ptp->pt_mode);
225 if (mknod(path, S_IFIFO | ptp->pt_reqmode, 0) < 0)
226 err(-1, "fifo_permission_test: %s: %08o "
227 "%08o %08o\n", testname, ptp->pt_umask,
228 ptp->pt_reqmode, ptp->pt_mode);
231 if (stat(path, &sb) < 0) {
235 err(-1, "fifo_permission_test: %s: %s", testname,
239 if (sb.st_mode != ptp->pt_mode) {
241 errx(-1, "fifo_permission_test: %s: %08o %08o %08o "
242 "got %08o", testname, ptp->pt_umask,
243 ptp->pt_reqmode, ptp->pt_mode, sb.st_mode);
246 if (unlink(path) < 0)
247 err(-1, "fifo_permission_test: %s: unlink: %s",
259 errx(-1, "must be run as root");
261 strcpy(temp_dir, "fifo_create.XXXXXXXXXXX");
262 if (mkdtemp(temp_dir) == NULL)
264 atexit(atexit_temp_dir);
266 if (chdir(temp_dir) < 0)
270 * Run each test twice, once with mknod(2) and a second time with
271 * mkfifo(2). Historically, BSD has not allowed mknod(2) to be used
272 * to create fifos, but the Single UNIX Specification requires it.
274 for (i = 0; i < 2; i++) {
276 fifo_permission_test(i);