1 /* $NetBSD: t_stat.c,v 1.4 2012/03/17 08:37:08 jruoho Exp $ */
2 
3 /*-
4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Jukka Ruohonen.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: t_stat.c,v 1.4 2012/03/17 08:37:08 jruoho Exp $");
33 
34 #include <sys/stat.h>
35 #include <sys/socket.h>
36 #include <sys/types.h>
37 
38 #include <arpa/inet.h>
39 
40 #include <atf-c.h>
41 #include <errno.h>
42 #include <fcntl.h>
43 #include <fts.h>
44 #include <limits.h>
45 #include <string.h>
46 #include <unistd.h>
47 
48 #include <stdio.h>
49 
50 #ifdef __FreeBSD__
51 #include <netinet/in.h>
52 #endif
53 
54 static const char *path = "stat";
55 
56 ATF_TC_WITH_CLEANUP(stat_chflags);
57 ATF_TC_HEAD(stat_chflags, tc)
58 {
59 	atf_tc_set_md_var(tc, "descr", "Test chflags(2) with stat(2)");
60 }
61 
62 ATF_TC_BODY(stat_chflags, tc)
63 {
64 	struct stat sa, sb;
65 	int fd;
66 
67 	(void)memset(&sa, 0, sizeof(struct stat));
68 	(void)memset(&sb, 0, sizeof(struct stat));
69 
70 	fd = open(path, O_RDONLY | O_CREAT);
71 
72 	ATF_REQUIRE(fd != -1);
73 	ATF_REQUIRE(stat(path, &sa) == 0);
74 	ATF_REQUIRE(chflags(path, UF_NODUMP) == 0);
75 	ATF_REQUIRE(stat(path, &sb) == 0);
76 
77 	if (sa.st_flags == sb.st_flags)
78 		atf_tc_fail("stat(2) did not detect chflags(2)");
79 
80 	ATF_REQUIRE(close(fd) == 0);
81 	ATF_REQUIRE(unlink(path) == 0);
82 }
83 
84 ATF_TC_CLEANUP(stat_chflags, tc)
85 {
86 	(void)unlink(path);
87 }
88 
89 ATF_TC(stat_dir);
90 ATF_TC_HEAD(stat_dir, tc)
91 {
92 	atf_tc_set_md_var(tc, "descr", "Test stat(2) with directories");
93 }
94 
95 ATF_TC_BODY(stat_dir, tc)
96 {
97 	const short depth = 2;
98 	struct stat sa, sb;
99 	char *argv[2];
100 	FTSENT *ftse;
101 	FTS *fts;
102 	int ops;
103 
104 	argv[1] = NULL;
105 	argv[0] = __UNCONST("/");
106 
107 	ops = FTS_NOCHDIR;
108 	ops |= FTS_PHYSICAL;
109 
110 	fts = fts_open(argv, ops, NULL);
111 	ATF_REQUIRE(fts != NULL);
112 
113 	while ((ftse = fts_read(fts)) != NULL) {
114 
115 		if (ftse->fts_level < 1)
116 			continue;
117 
118 		if (ftse->fts_level > depth) {
119 			(void)fts_set(fts, ftse, FTS_SKIP);
120 			continue;
121 		}
122 
123 		switch(ftse->fts_info) {
124 
125 		case FTS_DP:
126 
127 			(void)memset(&sa, 0, sizeof(struct stat));
128 			(void)memset(&sb, 0, sizeof(struct stat));
129 
130 			ATF_REQUIRE(stat(ftse->fts_parent->fts_path,&sa) == 0);
131 			ATF_REQUIRE(chdir(ftse->fts_path) == 0);
132 			ATF_REQUIRE(stat(".", &sb) == 0);
133 
134 			/*
135 			 * The previous two stat(2) calls
136 			 * should be for the same directory.
137 			 */
138 			if (sa.st_dev != sb.st_dev || sa.st_ino != sb.st_ino)
139 				atf_tc_fail("inconsistent stat(2)");
140 
141 			/*
142 			 * Check that fts(3)'s stat(2)
143 			 * call equals the manual one.
144 			 */
145 			if (sb.st_ino != ftse->fts_statp->st_ino)
146 				atf_tc_fail("stat(2) and fts(3) differ");
147 
148 			break;
149 
150 		default:
151 			break;
152 		}
153 	}
154 
155 	(void)fts_close(fts);
156 }
157 
158 ATF_TC(stat_err);
159 ATF_TC_HEAD(stat_err, tc)
160 {
161 	atf_tc_set_md_var(tc, "descr", "Test errors from the stat(2) family");
162 }
163 
164 ATF_TC_BODY(stat_err, tc)
165 {
166 	char buf[NAME_MAX + 1];
167 	struct stat st;
168 
169 	(void)memset(buf, 'x', sizeof(buf));
170 
171 	errno = 0;
172 	ATF_REQUIRE_ERRNO(EBADF, fstat(-1, &st) == -1);
173 
174 	errno = 0;
175 	ATF_REQUIRE_ERRNO(ENAMETOOLONG, stat(buf, &st) == -1);
176 
177 	errno = 0;
178 	ATF_REQUIRE_ERRNO(ENAMETOOLONG, lstat(buf, &st) == -1);
179 
180 	errno = 0;
181 	ATF_REQUIRE_ERRNO(EFAULT, stat((void *)-1, &st) == -1);
182 
183 	errno = 0;
184 	ATF_REQUIRE_ERRNO(EFAULT, lstat((void *)-1, &st) == -1);
185 
186 	errno = 0;
187 	ATF_REQUIRE_ERRNO(EFAULT, stat("/etc/passwd", (void *)-1) == -1);
188 
189 	errno = 0;
190 	ATF_REQUIRE_ERRNO(EFAULT, lstat("/etc/passwd", (void *)-1) == -1);
191 
192 	errno = 0;
193 	ATF_REQUIRE_ERRNO(ENOENT, stat("/a/b/c/d/e/f/g/h/i/j/k", &st) == -1);
194 
195 	errno = 0;
196 	ATF_REQUIRE_ERRNO(ENOENT, lstat("/a/b/c/d/e/f/g/h/i/j/k", &st) == -1);
197 }
198 
199 ATF_TC_WITH_CLEANUP(stat_mtime);
200 ATF_TC_HEAD(stat_mtime, tc)
201 {
202 	atf_tc_set_md_var(tc, "descr", "Test modification times with stat(2)");
203 }
204 
205 ATF_TC_BODY(stat_mtime, tc)
206 {
207 	struct stat sa, sb;
208 	int fd[3];
209 	size_t i;
210 
211 	for (i = 0; i < __arraycount(fd); i++) {
212 
213 		(void)memset(&sa, 0, sizeof(struct stat));
214 		(void)memset(&sb, 0, sizeof(struct stat));
215 
216 		fd[i] = open(path, O_WRONLY | O_CREAT);
217 
218 		ATF_REQUIRE(fd[i] != -1);
219 		ATF_REQUIRE(write(fd[i], "X", 1) == 1);
220 		ATF_REQUIRE(stat(path, &sa) == 0);
221 
222 		(void)sleep(1);
223 
224 		ATF_REQUIRE(write(fd[i], "X", 1) == 1);
225 		ATF_REQUIRE(stat(path, &sb) == 0);
226 
227 		ATF_REQUIRE(close(fd[i]) == 0);
228 		ATF_REQUIRE(unlink(path) == 0);
229 
230 		if (sa.st_mtime == sb.st_mtime)
231 			atf_tc_fail("mtimes did not change");
232 	}
233 }
234 
235 ATF_TC_CLEANUP(stat_mtime, tc)
236 {
237 	(void)unlink(path);
238 }
239 
240 ATF_TC_WITH_CLEANUP(stat_perm);
241 ATF_TC_HEAD(stat_perm, tc)
242 {
243 	atf_tc_set_md_var(tc, "descr", "Test permissions with stat(2)");
244 	atf_tc_set_md_var(tc, "require.user", "root");
245 }
246 
247 ATF_TC_BODY(stat_perm, tc)
248 {
249 	struct stat sa, sb;
250 	gid_t gid;
251 	uid_t uid;
252 	int fd;
253 
254 	(void)memset(&sa, 0, sizeof(struct stat));
255 	(void)memset(&sb, 0, sizeof(struct stat));
256 
257 	uid = getuid();
258 	gid = getgid();
259 
260 	fd = open(path, O_RDONLY | O_CREAT);
261 
262 	ATF_REQUIRE(fd != -1);
263 	ATF_REQUIRE(fstat(fd, &sa) == 0);
264 	ATF_REQUIRE(stat(path, &sb) == 0);
265 
266 	if (gid != sa.st_gid || sa.st_gid != sb.st_gid)
267 		atf_tc_fail("invalid GID");
268 
269 	if (uid != sa.st_uid || sa.st_uid != sb.st_uid)
270 		atf_tc_fail("invalid UID");
271 
272 	ATF_REQUIRE(close(fd) == 0);
273 	ATF_REQUIRE(unlink(path) == 0);
274 }
275 
276 ATF_TC_CLEANUP(stat_perm, tc)
277 {
278 	(void)unlink(path);
279 }
280 
281 ATF_TC_WITH_CLEANUP(stat_size);
282 ATF_TC_HEAD(stat_size, tc)
283 {
284 	atf_tc_set_md_var(tc, "descr", "Test file sizes with stat(2)");
285 }
286 
287 ATF_TC_BODY(stat_size, tc)
288 {
289 	struct stat sa, sb, sc;
290 	const size_t n = 10;
291 	size_t i;
292 	int fd;
293 
294 	fd = open(path, O_WRONLY | O_CREAT);
295 	ATF_REQUIRE(fd >= 0);
296 
297 	for (i = 0; i < n; i++) {
298 
299 		(void)memset(&sa, 0, sizeof(struct stat));
300 		(void)memset(&sb, 0, sizeof(struct stat));
301 		(void)memset(&sc, 0, sizeof(struct stat));
302 
303 		ATF_REQUIRE(fstat(fd, &sa) == 0);
304 		ATF_REQUIRE(write(fd, "X", 1) == 1);
305 		ATF_REQUIRE(fstat(fd, &sb) == 0);
306 		ATF_REQUIRE(stat(path, &sc) == 0);
307 
308 		if (sa.st_size + 1 != sb.st_size)
309 			atf_tc_fail("invalid file size");
310 
311 		if (sb.st_size != sc.st_size)
312 			atf_tc_fail("stat(2) and fstat(2) mismatch");
313 	}
314 
315 	ATF_REQUIRE(close(fd) == 0);
316 	ATF_REQUIRE(unlink(path) == 0);
317 }
318 
319 ATF_TC_CLEANUP(stat_size, tc)
320 {
321 	(void)unlink(path);
322 }
323 
324 ATF_TC(stat_socket);
325 ATF_TC_HEAD(stat_socket, tc)
326 {
327 	atf_tc_set_md_var(tc, "descr", "Test fstat(2) with "
328 	    "a socket (PR kern/46077)");
329 }
330 
331 ATF_TC_BODY(stat_socket, tc)
332 {
333 	struct sockaddr_in addr;
334 	struct stat st;
335 	uint32_t iaddr;
336 	int fd, flags;
337 
338 	(void)memset(&st, 0, sizeof(struct stat));
339 	(void)memset(&addr, 0, sizeof(struct sockaddr_in));
340 
341 	fd = socket(AF_INET, SOCK_STREAM, 0);
342 	ATF_REQUIRE(fd >= 0);
343 
344 	flags = fcntl(fd, F_GETFL);
345 
346 	ATF_REQUIRE(flags != -1);
347 	ATF_REQUIRE(fcntl(fd, F_SETFL, flags | O_NONBLOCK) != -1);
348 	ATF_REQUIRE(inet_pton(AF_INET, "127.0.0.1", &iaddr) == 1);
349 
350 	addr.sin_port = htons(42);
351 	addr.sin_family = AF_INET;
352 	addr.sin_addr.s_addr = iaddr;
353 
354 	errno = 0;
355 
356 	ATF_REQUIRE_ERRNO(EINPROGRESS,
357 	    connect(fd, (struct sockaddr *)&addr,
358 		sizeof(struct sockaddr_in)) == -1);
359 
360 	errno = 0;
361 
362 	if (fstat(fd, &st) != 0 || errno != 0)
363 		atf_tc_fail("fstat(2) failed for a EINPROGRESS socket");
364 
365 	(void)close(fd);
366 }
367 
368 ATF_TC_WITH_CLEANUP(stat_symlink);
369 ATF_TC_HEAD(stat_symlink, tc)
370 {
371 	atf_tc_set_md_var(tc, "descr", "Test symbolic links with stat(2)");
372 }
373 
374 ATF_TC_BODY(stat_symlink, tc)
375 {
376 	const char *pathlink = "pathlink";
377 	struct stat sa, sb;
378 	int fd;
379 
380 	(void)memset(&sa, 0, sizeof(struct stat));
381 	(void)memset(&sb, 0, sizeof(struct stat));
382 
383 	fd = open(path, O_WRONLY | O_CREAT);
384 
385 	ATF_REQUIRE(fd >= 0);
386 	ATF_REQUIRE(symlink(path, pathlink) == 0);
387 	ATF_REQUIRE(stat(pathlink, &sa) == 0);
388 	ATF_REQUIRE(lstat(pathlink, &sb) == 0);
389 
390 	if (S_ISLNK(sa.st_mode) != 0)
391 		atf_tc_fail("stat(2) detected symbolic link");
392 
393 	if (S_ISLNK(sb.st_mode) == 0)
394 		atf_tc_fail("lstat(2) did not detect symbolic link");
395 
396 	if (sa.st_mode == sb.st_mode)
397 		atf_tc_fail("inconsistencies between stat(2) and lstat(2)");
398 
399 	ATF_REQUIRE(unlink(path) == 0);
400 	ATF_REQUIRE(unlink(pathlink) == 0);
401 }
402 
403 ATF_TC_CLEANUP(stat_symlink, tc)
404 {
405 	(void)unlink(path);
406 }
407 
408 ATF_TP_ADD_TCS(tp)
409 {
410 
411 	ATF_TP_ADD_TC(tp, stat_chflags);
412 	ATF_TP_ADD_TC(tp, stat_dir);
413 	ATF_TP_ADD_TC(tp, stat_err);
414 	ATF_TP_ADD_TC(tp, stat_mtime);
415 	ATF_TP_ADD_TC(tp, stat_perm);
416 	ATF_TP_ADD_TC(tp, stat_size);
417 	ATF_TP_ADD_TC(tp, stat_socket);
418 	ATF_TP_ADD_TC(tp, stat_symlink);
419 
420 	return atf_no_error();
421 }
422