t_stat.c revision 314817 
1/* $NetBSD: t_stat.c,v 1.5 2017/01/13 20:06:50 christos 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 1.5 2017/01/13 20:06:50 christos Exp $");
33
34#include <sys/stat.h>
35#include <sys/socket.h>
36#include <sys/types.h>
37
38#include <arpa/inet.h>
39#include <netinet/in.h>
40
41#include <atf-c.h>
42#include <errno.h>
43#include <fcntl.h>
44#include <fts.h>
45#include <limits.h>
46#include <string.h>
47#include <unistd.h>
48
49#include <stdio.h>
50
51static const char *path = "stat";
52
53ATF_TC_WITH_CLEANUP(stat_chflags);
54ATF_TC_HEAD(stat_chflags, tc)
55{
56	atf_tc_set_md_var(tc, "descr", "Test chflags(2) with stat(2)");
57}
58
59ATF_TC_BODY(stat_chflags, tc)
60{
61	struct stat sa, sb;
62	int fd;
63
64	(void)memset(&sa, 0, sizeof(struct stat));
65	(void)memset(&sb, 0, sizeof(struct stat));
66
67	fd = open(path, O_RDONLY | O_CREAT);
68
69	ATF_REQUIRE(fd != -1);
70	ATF_REQUIRE(stat(path, &sa) == 0);
71	ATF_REQUIRE(chflags(path, UF_NODUMP) == 0);
72	ATF_REQUIRE(stat(path, &sb) == 0);
73
74	if (sa.st_flags == sb.st_flags)
75		atf_tc_fail("stat(2) did not detect chflags(2)");
76
77	ATF_REQUIRE(close(fd) == 0);
78	ATF_REQUIRE(unlink(path) == 0);
79}
80
81ATF_TC_CLEANUP(stat_chflags, tc)
82{
83	(void)unlink(path);
84}
85
86ATF_TC(stat_dir);
87ATF_TC_HEAD(stat_dir, tc)
88{
89	atf_tc_set_md_var(tc, "descr", "Test stat(2) with directories");
90}
91
92ATF_TC_BODY(stat_dir, tc)
93{
94	const short depth = 2;
95	struct stat sa, sb;
96	char *argv[2];
97	FTSENT *ftse;
98	FTS *fts;
99	int ops;
100
101	argv[1] = NULL;
102	argv[0] = __UNCONST("/");
103
104	ops = FTS_NOCHDIR;
105	ops |= FTS_PHYSICAL;
106
107	fts = fts_open(argv, ops, NULL);
108	ATF_REQUIRE(fts != NULL);
109
110	while ((ftse = fts_read(fts)) != NULL) {
111
112		if (ftse->fts_level < 1)
113			continue;
114
115		if (ftse->fts_level > depth) {
116			(void)fts_set(fts, ftse, FTS_SKIP);
117			continue;
118		}
119
120		switch(ftse->fts_info) {
121
122		case FTS_DP:
123
124			(void)memset(&sa, 0, sizeof(struct stat));
125			(void)memset(&sb, 0, sizeof(struct stat));
126
127			ATF_REQUIRE(stat(ftse->fts_parent->fts_path,&sa) == 0);
128			ATF_REQUIRE(chdir(ftse->fts_path) == 0);
129			ATF_REQUIRE(stat(".", &sb) == 0);
130
131			/*
132			 * The previous two stat(2) calls
133			 * should be for the same directory.
134			 */
135			if (sa.st_dev != sb.st_dev || sa.st_ino != sb.st_ino)
136				atf_tc_fail("inconsistent stat(2)");
137
138			/*
139			 * Check that fts(3)'s stat(2)
140			 * call equals the manual one.
141			 */
142			if (sb.st_ino != ftse->fts_statp->st_ino)
143				atf_tc_fail("stat(2) and fts(3) differ");
144
145			break;
146
147		default:
148			break;
149		}
150	}
151
152	(void)fts_close(fts);
153}
154
155ATF_TC(stat_err);
156ATF_TC_HEAD(stat_err, tc)
157{
158	atf_tc_set_md_var(tc, "descr", "Test errors from the stat(2) family");
159}
160
161ATF_TC_BODY(stat_err, tc)
162{
163	char buf[NAME_MAX + 1];
164	struct stat st;
165
166	(void)memset(buf, 'x', sizeof(buf));
167
168	errno = 0;
169	ATF_REQUIRE_ERRNO(EBADF, fstat(-1, &st) == -1);
170
171	errno = 0;
172	ATF_REQUIRE_ERRNO(ENAMETOOLONG, stat(buf, &st) == -1);
173
174	errno = 0;
175	ATF_REQUIRE_ERRNO(ENAMETOOLONG, lstat(buf, &st) == -1);
176
177	errno = 0;
178	ATF_REQUIRE_ERRNO(EFAULT, stat((void *)-1, &st) == -1);
179
180	errno = 0;
181	ATF_REQUIRE_ERRNO(EFAULT, lstat((void *)-1, &st) == -1);
182
183	errno = 0;
184	ATF_REQUIRE_ERRNO(EFAULT, stat("/etc/passwd", (void *)-1) == -1);
185
186	errno = 0;
187	ATF_REQUIRE_ERRNO(EFAULT, lstat("/etc/passwd", (void *)-1) == -1);
188
189	errno = 0;
190	ATF_REQUIRE_ERRNO(ENOENT, stat("/a/b/c/d/e/f/g/h/i/j/k", &st) == -1);
191
192	errno = 0;
193	ATF_REQUIRE_ERRNO(ENOENT, lstat("/a/b/c/d/e/f/g/h/i/j/k", &st) == -1);
194}
195
196ATF_TC_WITH_CLEANUP(stat_mtime);
197ATF_TC_HEAD(stat_mtime, tc)
198{
199	atf_tc_set_md_var(tc, "descr", "Test modification times with stat(2)");
200}
201
202ATF_TC_BODY(stat_mtime, tc)
203{
204	struct stat sa, sb;
205	int fd[3];
206	size_t i;
207
208	for (i = 0; i < __arraycount(fd); i++) {
209
210		(void)memset(&sa, 0, sizeof(struct stat));
211		(void)memset(&sb, 0, sizeof(struct stat));
212
213		fd[i] = open(path, O_WRONLY | O_CREAT);
214
215		ATF_REQUIRE(fd[i] != -1);
216		ATF_REQUIRE(write(fd[i], "X", 1) == 1);
217		ATF_REQUIRE(stat(path, &sa) == 0);
218
219		(void)sleep(1);
220
221		ATF_REQUIRE(write(fd[i], "X", 1) == 1);
222		ATF_REQUIRE(stat(path, &sb) == 0);
223
224		ATF_REQUIRE(close(fd[i]) == 0);
225		ATF_REQUIRE(unlink(path) == 0);
226
227		if (sa.st_mtime == sb.st_mtime)
228			atf_tc_fail("mtimes did not change");
229	}
230}
231
232ATF_TC_CLEANUP(stat_mtime, tc)
233{
234	(void)unlink(path);
235}
236
237ATF_TC_WITH_CLEANUP(stat_perm);
238ATF_TC_HEAD(stat_perm, tc)
239{
240	atf_tc_set_md_var(tc, "descr", "Test permissions with stat(2)");
241	atf_tc_set_md_var(tc, "require.user", "root");
242}
243
244ATF_TC_BODY(stat_perm, tc)
245{
246	struct stat sa, sb;
247	gid_t gid;
248	uid_t uid;
249	int fd;
250
251	(void)memset(&sa, 0, sizeof(struct stat));
252	(void)memset(&sb, 0, sizeof(struct stat));
253
254	uid = getuid();
255	gid = getgid();
256
257	fd = open(path, O_RDONLY | O_CREAT);
258
259	ATF_REQUIRE(fd != -1);
260	ATF_REQUIRE(fstat(fd, &sa) == 0);
261	ATF_REQUIRE(stat(path, &sb) == 0);
262
263	if (gid != sa.st_gid || sa.st_gid != sb.st_gid)
264		atf_tc_fail("invalid GID");
265
266	if (uid != sa.st_uid || sa.st_uid != sb.st_uid)
267		atf_tc_fail("invalid UID");
268
269	ATF_REQUIRE(close(fd) == 0);
270	ATF_REQUIRE(unlink(path) == 0);
271}
272
273ATF_TC_CLEANUP(stat_perm, tc)
274{
275	(void)unlink(path);
276}
277
278ATF_TC_WITH_CLEANUP(stat_size);
279ATF_TC_HEAD(stat_size, tc)
280{
281	atf_tc_set_md_var(tc, "descr", "Test file sizes with stat(2)");
282}
283
284ATF_TC_BODY(stat_size, tc)
285{
286	struct stat sa, sb, sc;
287	const size_t n = 10;
288	size_t i;
289	int fd;
290
291	fd = open(path, O_WRONLY | O_CREAT);
292	ATF_REQUIRE(fd >= 0);
293
294	for (i = 0; i < n; i++) {
295
296		(void)memset(&sa, 0, sizeof(struct stat));
297		(void)memset(&sb, 0, sizeof(struct stat));
298		(void)memset(&sc, 0, sizeof(struct stat));
299
300		ATF_REQUIRE(fstat(fd, &sa) == 0);
301		ATF_REQUIRE(write(fd, "X", 1) == 1);
302		ATF_REQUIRE(fstat(fd, &sb) == 0);
303		ATF_REQUIRE(stat(path, &sc) == 0);
304
305		if (sa.st_size + 1 != sb.st_size)
306			atf_tc_fail("invalid file size");
307
308		if (sb.st_size != sc.st_size)
309			atf_tc_fail("stat(2) and fstat(2) mismatch");
310	}
311
312	ATF_REQUIRE(close(fd) == 0);
313	ATF_REQUIRE(unlink(path) == 0);
314}
315
316ATF_TC_CLEANUP(stat_size, tc)
317{
318	(void)unlink(path);
319}
320
321ATF_TC(stat_socket);
322ATF_TC_HEAD(stat_socket, tc)
323{
324	atf_tc_set_md_var(tc, "descr", "Test fstat(2) with "
325	    "a socket (PR kern/46077)");
326}
327
328ATF_TC_BODY(stat_socket, tc)
329{
330	struct sockaddr_in addr;
331	struct stat st;
332	uint32_t iaddr;
333	int fd, flags;
334
335	(void)memset(&st, 0, sizeof(struct stat));
336	(void)memset(&addr, 0, sizeof(struct sockaddr_in));
337
338	fd = socket(AF_INET, SOCK_STREAM, 0);
339	ATF_REQUIRE(fd >= 0);
340
341	flags = fcntl(fd, F_GETFL);
342
343	ATF_REQUIRE(flags != -1);
344	ATF_REQUIRE(fcntl(fd, F_SETFL, flags | O_NONBLOCK) != -1);
345	ATF_REQUIRE(inet_pton(AF_INET, "127.0.0.1", &iaddr) == 1);
346
347	addr.sin_port = htons(42);
348	addr.sin_family = AF_INET;
349	addr.sin_addr.s_addr = iaddr;
350
351	errno = 0;
352
353	ATF_REQUIRE_ERRNO(EINPROGRESS,
354	    connect(fd, (struct sockaddr *)&addr,
355		sizeof(struct sockaddr_in)) == -1);
356
357	errno = 0;
358
359	if (fstat(fd, &st) != 0 || errno != 0)
360		atf_tc_fail("fstat(2) failed for a EINPROGRESS socket");
361
362	(void)close(fd);
363}
364
365ATF_TC_WITH_CLEANUP(stat_symlink);
366ATF_TC_HEAD(stat_symlink, tc)
367{
368	atf_tc_set_md_var(tc, "descr", "Test symbolic links with stat(2)");
369}
370
371ATF_TC_BODY(stat_symlink, tc)
372{
373	const char *pathlink = "pathlink";
374	struct stat sa, sb;
375	int fd;
376
377	(void)memset(&sa, 0, sizeof(struct stat));
378	(void)memset(&sb, 0, sizeof(struct stat));
379
380	fd = open(path, O_WRONLY | O_CREAT);
381
382	ATF_REQUIRE(fd >= 0);
383	ATF_REQUIRE(symlink(path, pathlink) == 0);
384	ATF_REQUIRE(stat(pathlink, &sa) == 0);
385	ATF_REQUIRE(lstat(pathlink, &sb) == 0);
386
387	if (S_ISLNK(sa.st_mode) != 0)
388		atf_tc_fail("stat(2) detected symbolic link");
389
390	if (S_ISLNK(sb.st_mode) == 0)
391		atf_tc_fail("lstat(2) did not detect symbolic link");
392
393	if (sa.st_mode == sb.st_mode)
394		atf_tc_fail("inconsistencies between stat(2) and lstat(2)");
395
396	(void)close(fd);
397	ATF_REQUIRE(unlink(path) == 0);
398	ATF_REQUIRE(unlink(pathlink) == 0);
399}
400
401ATF_TC_CLEANUP(stat_symlink, tc)
402{
403	(void)unlink(path);
404}
405
406ATF_TP_ADD_TCS(tp)
407{
408
409	ATF_TP_ADD_TC(tp, stat_chflags);
410	ATF_TP_ADD_TC(tp, stat_dir);
411	ATF_TP_ADD_TC(tp, stat_err);
412	ATF_TP_ADD_TC(tp, stat_mtime);
413	ATF_TP_ADD_TC(tp, stat_perm);
414	ATF_TP_ADD_TC(tp, stat_size);
415	ATF_TP_ADD_TC(tp, stat_socket);
416	ATF_TP_ADD_TC(tp, stat_symlink);
417
418	return atf_no_error();
419}
420