1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2019 The FreeBSD Foundation
5 *
6 * This software was developed by BFF Storage Systems, LLC under sponsorship
7 * from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 extern "C" {
32 #include <sys/param.h>
33 #include <sys/mount.h>
34
35 #include <fcntl.h>
36 #include <unistd.h>
37 }
38
39 #include "mockfs.hh"
40 #include "utils.hh"
41
42 using namespace testing;
43
44 class Lookup: public FuseTest {};
45
46 class Lookup_7_8: public Lookup {
47 public:
SetUp()48 virtual void SetUp() {
49 m_kernel_minor_version = 8;
50 Lookup::SetUp();
51 }
52 };
53
54 class LookupExportable: public Lookup {
55 public:
SetUp()56 virtual void SetUp() {
57 m_init_flags = FUSE_EXPORT_SUPPORT;
58 Lookup::SetUp();
59 }
60 };
61
62 /*
63 * If lookup returns a non-zero cache timeout, then subsequent VOP_GETATTRs
64 * should use the cached attributes, rather than query the daemon
65 */
TEST_F(Lookup,attr_cache)66 TEST_F(Lookup, attr_cache)
67 {
68 const char FULLPATH[] = "mountpoint/some_file.txt";
69 const char RELPATH[] = "some_file.txt";
70 const uint64_t ino = 42;
71 const uint64_t generation = 13;
72 struct stat sb;
73
74 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
75 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
76 SET_OUT_HEADER_LEN(out, entry);
77 out.body.entry.nodeid = ino;
78 out.body.entry.attr_valid = UINT64_MAX;
79 out.body.entry.attr.ino = ino; // Must match nodeid
80 out.body.entry.attr.mode = S_IFREG | 0644;
81 out.body.entry.attr.size = 1;
82 out.body.entry.attr.blocks = 2;
83 out.body.entry.attr.atime = 3;
84 out.body.entry.attr.mtime = 4;
85 out.body.entry.attr.ctime = 5;
86 out.body.entry.attr.atimensec = 6;
87 out.body.entry.attr.mtimensec = 7;
88 out.body.entry.attr.ctimensec = 8;
89 out.body.entry.attr.nlink = 9;
90 out.body.entry.attr.uid = 10;
91 out.body.entry.attr.gid = 11;
92 out.body.entry.attr.rdev = 12;
93 out.body.entry.generation = generation;
94 })));
95 /* stat(2) issues a VOP_LOOKUP followed by a VOP_GETATTR */
96 ASSERT_EQ(0, stat(FULLPATH, &sb)) << strerror(errno);
97 EXPECT_EQ(1, sb.st_size);
98 EXPECT_EQ(2, sb.st_blocks);
99 EXPECT_EQ(3, sb.st_atim.tv_sec);
100 EXPECT_EQ(6, sb.st_atim.tv_nsec);
101 EXPECT_EQ(4, sb.st_mtim.tv_sec);
102 EXPECT_EQ(7, sb.st_mtim.tv_nsec);
103 EXPECT_EQ(5, sb.st_ctim.tv_sec);
104 EXPECT_EQ(8, sb.st_ctim.tv_nsec);
105 EXPECT_EQ(9ull, sb.st_nlink);
106 EXPECT_EQ(10ul, sb.st_uid);
107 EXPECT_EQ(11ul, sb.st_gid);
108 EXPECT_EQ(12ul, sb.st_rdev);
109 EXPECT_EQ(ino, sb.st_ino);
110 EXPECT_EQ(S_IFREG | 0644, sb.st_mode);
111
112 // fuse(4) does not _yet_ support inode generations
113 //EXPECT_EQ(generation, sb.st_gen);
114
115 /*
116 * st_birthtim and st_flags are not supported by the fuse protocol.
117 * They're only supported as OS-specific extensions to OSX. For
118 * birthtime, the convention for "not supported" is "negative one
119 * second".
120 */
121 EXPECT_EQ(-1, sb.st_birthtim.tv_sec);
122 EXPECT_EQ(0, sb.st_birthtim.tv_nsec);
123 EXPECT_EQ(0u, sb.st_flags);
124 }
125
126 /*
127 * If lookup returns a finite but non-zero cache timeout, then we should discard
128 * the cached attributes and requery the daemon.
129 */
TEST_F(Lookup,attr_cache_timeout)130 TEST_F(Lookup, attr_cache_timeout)
131 {
132 const char FULLPATH[] = "mountpoint/some_file.txt";
133 const char RELPATH[] = "some_file.txt";
134 const uint64_t ino = 42;
135 struct stat sb;
136
137 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
138 .Times(2)
139 .WillRepeatedly(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
140 SET_OUT_HEADER_LEN(out, entry);
141 out.body.entry.nodeid = ino;
142 out.body.entry.attr_valid_nsec = NAP_NS / 2;
143 out.body.entry.attr.ino = ino; // Must match nodeid
144 out.body.entry.attr.mode = S_IFREG | 0644;
145 })));
146
147 /* access(2) will issue a VOP_LOOKUP and fill the attr cache */
148 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
149 /* Next access(2) will use the cached attributes */
150 nap();
151 /* The cache has timed out; VOP_GETATTR should query the daemon*/
152 ASSERT_EQ(0, stat(FULLPATH, &sb)) << strerror(errno);
153 }
154
TEST_F(Lookup,dot)155 TEST_F(Lookup, dot)
156 {
157 const char FULLPATH[] = "mountpoint/some_dir/.";
158 const char RELDIRPATH[] = "some_dir";
159 uint64_t ino = 42;
160
161 EXPECT_LOOKUP(FUSE_ROOT_ID, RELDIRPATH)
162 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
163 SET_OUT_HEADER_LEN(out, entry);
164 out.body.entry.attr.mode = S_IFDIR | 0755;
165 out.body.entry.nodeid = ino;
166 out.body.entry.attr_valid = UINT64_MAX;
167 out.body.entry.entry_valid = UINT64_MAX;
168 })));
169
170 /*
171 * access(2) is one of the few syscalls that will not (always) follow
172 * up a successful VOP_LOOKUP with another VOP.
173 */
174 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
175 }
176
TEST_F(Lookup,dotdot)177 TEST_F(Lookup, dotdot)
178 {
179 const char FULLPATH[] = "mountpoint/some_dir/..";
180 const char RELDIRPATH[] = "some_dir";
181
182 EXPECT_LOOKUP(FUSE_ROOT_ID, RELDIRPATH)
183 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
184 SET_OUT_HEADER_LEN(out, entry);
185 out.body.entry.attr.mode = S_IFDIR | 0755;
186 out.body.entry.nodeid = 14;
187 out.body.entry.attr_valid = UINT64_MAX;
188 out.body.entry.entry_valid = UINT64_MAX;
189 })));
190
191 /*
192 * access(2) is one of the few syscalls that will not (always) follow
193 * up a successful VOP_LOOKUP with another VOP.
194 */
195 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
196 }
197
198 /*
199 * Lookup ".." when that vnode's entry cache has timed out, but its child's
200 * hasn't. Since this file system doesn't set FUSE_EXPORT_SUPPORT, we have no
201 * choice but to use the cached entry, even though it expired.
202 */
TEST_F(Lookup,dotdot_entry_cache_timeout)203 TEST_F(Lookup, dotdot_entry_cache_timeout)
204 {
205 uint64_t foo_ino = 42;
206 uint64_t bar_ino = 43;
207
208 EXPECT_LOOKUP(FUSE_ROOT_ID, "foo")
209 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
210 SET_OUT_HEADER_LEN(out, entry);
211 out.body.entry.attr.mode = S_IFDIR | 0755;
212 out.body.entry.nodeid = foo_ino;
213 out.body.entry.attr_valid = UINT64_MAX;
214 out.body.entry.entry_valid = 0; // immediate timeout
215 })));
216 EXPECT_LOOKUP(foo_ino, "bar")
217 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
218 SET_OUT_HEADER_LEN(out, entry);
219 out.body.entry.attr.mode = S_IFDIR | 0755;
220 out.body.entry.nodeid = bar_ino;
221 out.body.entry.attr_valid = UINT64_MAX;
222 out.body.entry.entry_valid = UINT64_MAX;
223 })));
224 expect_opendir(bar_ino);
225
226 int fd = open("mountpoint/foo/bar", O_EXEC| O_DIRECTORY);
227 ASSERT_LE(0, fd) << strerror(errno);
228 EXPECT_EQ(0, faccessat(fd, "../..", F_OK, 0)) << strerror(errno);
229 }
230
231 /*
232 * Lookup ".." for a vnode with no valid parent nid
233 * Regression test for https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259974
234 * Since the file system is not exportable, we have no choice but to return an
235 * error.
236 */
TEST_F(Lookup,dotdot_no_parent_nid)237 TEST_F(Lookup, dotdot_no_parent_nid)
238 {
239 uint64_t foo_ino = 42;
240 uint64_t bar_ino = 43;
241 int fd;
242
243 EXPECT_LOOKUP(FUSE_ROOT_ID, "foo")
244 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
245 SET_OUT_HEADER_LEN(out, entry);
246 out.body.entry.attr.mode = S_IFDIR | 0755;
247 out.body.entry.nodeid = foo_ino;
248 out.body.entry.attr_valid = UINT64_MAX;
249 out.body.entry.entry_valid = UINT64_MAX;
250 })));
251 EXPECT_LOOKUP(foo_ino, "bar")
252 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
253 SET_OUT_HEADER_LEN(out, entry);
254 out.body.entry.attr.mode = S_IFDIR | 0755;
255 out.body.entry.nodeid = bar_ino;
256 out.body.entry.attr_valid = UINT64_MAX;
257 out.body.entry.entry_valid = UINT64_MAX;
258 })));
259 EXPECT_CALL(*m_mock, process(
260 ResultOf([=](auto in) {
261 return (in.header.opcode == FUSE_OPENDIR);
262 }, Eq(true)),
263 _)
264 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
265 SET_OUT_HEADER_LEN(out, open);
266 })));
267 expect_forget(foo_ino, 1, NULL);
268
269 fd = open("mountpoint/foo/bar", O_EXEC| O_DIRECTORY);
270 ASSERT_LE(0, fd) << strerror(errno);
271 // Try (and fail) to unmount the file system, to reclaim the mountpoint
272 // and foo vnodes.
273 ASSERT_NE(0, unmount("mountpoint", 0));
274 EXPECT_EQ(EBUSY, errno);
275 nap(); // Because vnode reclamation is asynchronous
276 EXPECT_NE(0, faccessat(fd, "../..", F_OK, 0));
277 EXPECT_EQ(ESTALE, errno);
278 }
279
280 /*
281 * A daemon that returns an illegal error value should be handled gracefully.
282 * Regression test for https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263220
283 */
TEST_F(Lookup,ejustreturn)284 TEST_F(Lookup, ejustreturn)
285 {
286 const char FULLPATH[] = "mountpoint/does_not_exist";
287 const char RELPATH[] = "does_not_exist";
288
289 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
290 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
291 out.header.len = sizeof(out.header);
292 out.header.error = 2;
293 out.expected_errno = EINVAL;
294 })));
295
296 EXPECT_NE(0, access(FULLPATH, F_OK));
297
298 EXPECT_EQ(EIO, errno);
299 }
300
TEST_F(Lookup,enoent)301 TEST_F(Lookup, enoent)
302 {
303 const char FULLPATH[] = "mountpoint/does_not_exist";
304 const char RELPATH[] = "does_not_exist";
305
306 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
307 .WillOnce(Invoke(ReturnErrno(ENOENT)));
308 EXPECT_NE(0, access(FULLPATH, F_OK));
309 EXPECT_EQ(ENOENT, errno);
310 }
311
TEST_F(Lookup,enotdir)312 TEST_F(Lookup, enotdir)
313 {
314 const char FULLPATH[] = "mountpoint/not_a_dir/some_file.txt";
315 const char RELPATH[] = "not_a_dir";
316
317 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
318 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
319 SET_OUT_HEADER_LEN(out, entry);
320 out.body.entry.entry_valid = UINT64_MAX;
321 out.body.entry.attr.mode = S_IFREG | 0644;
322 out.body.entry.nodeid = 42;
323 })));
324
325 ASSERT_EQ(-1, access(FULLPATH, F_OK));
326 ASSERT_EQ(ENOTDIR, errno);
327 }
328
329 /*
330 * If lookup returns a non-zero entry timeout, then subsequent VOP_LOOKUPs
331 * should use the cached inode rather than requery the daemon
332 */
TEST_F(Lookup,entry_cache)333 TEST_F(Lookup, entry_cache)
334 {
335 const char FULLPATH[] = "mountpoint/some_file.txt";
336 const char RELPATH[] = "some_file.txt";
337
338 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
339 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
340 SET_OUT_HEADER_LEN(out, entry);
341 out.body.entry.entry_valid = UINT64_MAX;
342 out.body.entry.attr.mode = S_IFREG | 0644;
343 out.body.entry.nodeid = 14;
344 })));
345 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
346 /* The second access(2) should use the cache */
347 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
348 }
349
350 /*
351 * If the daemon returns an error of 0 and an inode of 0, that's a flag for
352 * "ENOENT and cache it" with the given entry_timeout
353 */
TEST_F(Lookup,entry_cache_negative)354 TEST_F(Lookup, entry_cache_negative)
355 {
356 struct timespec entry_valid = {.tv_sec = TIME_T_MAX, .tv_nsec = 0};
357
358 EXPECT_LOOKUP(FUSE_ROOT_ID, "does_not_exist")
359 .Times(1)
360 .WillOnce(Invoke(ReturnNegativeCache(&entry_valid)));
361
362 EXPECT_NE(0, access("mountpoint/does_not_exist", F_OK));
363 EXPECT_EQ(ENOENT, errno);
364 EXPECT_NE(0, access("mountpoint/does_not_exist", F_OK));
365 EXPECT_EQ(ENOENT, errno);
366 }
367
368 /* Negative entry caches should timeout, too */
TEST_F(Lookup,entry_cache_negative_timeout)369 TEST_F(Lookup, entry_cache_negative_timeout)
370 {
371 const char *RELPATH = "does_not_exist";
372 const char *FULLPATH = "mountpoint/does_not_exist";
373 struct timespec entry_valid = {.tv_sec = 0, .tv_nsec = NAP_NS / 2};
374
375 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
376 .Times(2)
377 .WillRepeatedly(Invoke(ReturnNegativeCache(&entry_valid)));
378
379 EXPECT_NE(0, access(FULLPATH, F_OK));
380 EXPECT_EQ(ENOENT, errno);
381
382 nap();
383
384 /* The cache has timed out; VOP_LOOKUP should requery the daemon*/
385 EXPECT_NE(0, access(FULLPATH, F_OK));
386 EXPECT_EQ(ENOENT, errno);
387 }
388
389 /*
390 * If lookup returns a finite but non-zero entry cache timeout, then we should
391 * discard the cached inode and requery the daemon
392 */
TEST_F(Lookup,entry_cache_timeout)393 TEST_F(Lookup, entry_cache_timeout)
394 {
395 const char FULLPATH[] = "mountpoint/some_file.txt";
396 const char RELPATH[] = "some_file.txt";
397
398 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
399 .Times(2)
400 .WillRepeatedly(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
401 SET_OUT_HEADER_LEN(out, entry);
402 out.body.entry.entry_valid_nsec = NAP_NS / 2;
403 out.body.entry.attr.mode = S_IFREG | 0644;
404 out.body.entry.nodeid = 14;
405 })));
406
407 /* access(2) will issue a VOP_LOOKUP and fill the entry cache */
408 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
409 /* Next access(2) will use the cached entry */
410 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
411 nap();
412 /* The cache has timed out; VOP_LOOKUP should requery the daemon*/
413 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
414 }
415
TEST_F(Lookup,ok)416 TEST_F(Lookup, ok)
417 {
418 const char FULLPATH[] = "mountpoint/some_file.txt";
419 const char RELPATH[] = "some_file.txt";
420
421 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
422 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
423 SET_OUT_HEADER_LEN(out, entry);
424 out.body.entry.attr.mode = S_IFREG | 0644;
425 out.body.entry.nodeid = 14;
426 })));
427 /*
428 * access(2) is one of the few syscalls that will not (always) follow
429 * up a successful VOP_LOOKUP with another VOP.
430 */
431 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
432 }
433
434 /*
435 * Lookup in a subdirectory of the fuse mount. The naughty server returns the
436 * same inode for the child as for the parent.
437 */
TEST_F(Lookup,parent_inode)438 TEST_F(Lookup, parent_inode)
439 {
440 const char FULLPATH[] = "mountpoint/some_dir/some_file.txt";
441 const char DIRPATH[] = "some_dir";
442 const char RELPATH[] = "some_file.txt";
443 uint64_t dir_ino = 2;
444
445 EXPECT_LOOKUP(FUSE_ROOT_ID, DIRPATH)
446 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
447 SET_OUT_HEADER_LEN(out, entry);
448 out.body.entry.attr.mode = S_IFDIR | 0755;
449 out.body.entry.nodeid = dir_ino;
450 })));
451 EXPECT_LOOKUP(dir_ino, RELPATH)
452 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
453 SET_OUT_HEADER_LEN(out, entry);
454 out.body.entry.attr.mode = S_IFREG | 0644;
455 out.body.entry.nodeid = dir_ino;
456 })));
457 /*
458 * access(2) is one of the few syscalls that will not (always) follow
459 * up a successful VOP_LOOKUP with another VOP.
460 */
461 ASSERT_EQ(-1, access(FULLPATH, F_OK));
462 ASSERT_EQ(EIO, errno);
463 }
464
465 // Lookup in a subdirectory of the fuse mount
TEST_F(Lookup,subdir)466 TEST_F(Lookup, subdir)
467 {
468 const char FULLPATH[] = "mountpoint/some_dir/some_file.txt";
469 const char DIRPATH[] = "some_dir";
470 const char RELPATH[] = "some_file.txt";
471 uint64_t dir_ino = 2;
472 uint64_t file_ino = 3;
473
474 EXPECT_LOOKUP(FUSE_ROOT_ID, DIRPATH)
475 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
476 SET_OUT_HEADER_LEN(out, entry);
477 out.body.entry.attr.mode = S_IFDIR | 0755;
478 out.body.entry.nodeid = dir_ino;
479 })));
480 EXPECT_LOOKUP(dir_ino, RELPATH)
481 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
482 SET_OUT_HEADER_LEN(out, entry);
483 out.body.entry.attr.mode = S_IFREG | 0644;
484 out.body.entry.nodeid = file_ino;
485 })));
486 /*
487 * access(2) is one of the few syscalls that will not (always) follow
488 * up a successful VOP_LOOKUP with another VOP.
489 */
490 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
491 }
492
493 /*
494 * The server returns two different vtypes for the same nodeid. This is
495 * technically allowed if the entry's cache has already expired.
496 * https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258022
497 */
TEST_F(Lookup,vtype_conflict)498 TEST_F(Lookup, vtype_conflict)
499 {
500 const char FIRSTFULLPATH[] = "mountpoint/foo";
501 const char SECONDFULLPATH[] = "mountpoint/bar";
502 const char FIRSTRELPATH[] = "foo";
503 const char SECONDRELPATH[] = "bar";
504 uint64_t ino = 42;
505
506 EXPECT_LOOKUP(FUSE_ROOT_ID, FIRSTRELPATH)
507 .WillOnce(Invoke(
508 ReturnImmediate([=](auto in __unused, auto& out) {
509 SET_OUT_HEADER_LEN(out, entry);
510 out.body.entry.attr.mode = S_IFDIR | 0644;
511 out.body.entry.nodeid = ino;
512 out.body.entry.attr.nlink = 1;
513 })));
514 expect_lookup(SECONDRELPATH, ino, S_IFREG | 0755, 0, 1, UINT64_MAX);
515 // VOP_FORGET happens asynchronously, so it may or may not arrive
516 // before the test completes.
517 EXPECT_CALL(*m_mock, process(
518 ResultOf([=](auto in) {
519 return (in.header.opcode == FUSE_FORGET &&
520 in.header.nodeid == ino &&
521 in.body.forget.nlookup == 1);
522 }, Eq(true)),
523 _)
524 ).Times(AtMost(1))
525 .WillOnce(Invoke([=](auto in __unused, auto &out __unused) { }));
526
527 ASSERT_EQ(0, access(FIRSTFULLPATH, F_OK)) << strerror(errno);
528 EXPECT_EQ(0, access(SECONDFULLPATH, F_OK)) << strerror(errno);
529 }
530
TEST_F(Lookup_7_8,ok)531 TEST_F(Lookup_7_8, ok)
532 {
533 const char FULLPATH[] = "mountpoint/some_file.txt";
534 const char RELPATH[] = "some_file.txt";
535
536 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH)
537 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
538 SET_OUT_HEADER_LEN(out, entry_7_8);
539 out.body.entry.attr.mode = S_IFREG | 0644;
540 out.body.entry.nodeid = 14;
541 })));
542 /*
543 * access(2) is one of the few syscalls that will not (always) follow
544 * up a successful VOP_LOOKUP with another VOP.
545 */
546 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
547 }
548
549 /*
550 * Lookup ".." when that vnode's entry cache has timed out, but its child's
551 * hasn't.
552 */
TEST_F(LookupExportable,dotdot_entry_cache_timeout)553 TEST_F(LookupExportable, dotdot_entry_cache_timeout)
554 {
555 uint64_t foo_ino = 42;
556 uint64_t bar_ino = 43;
557
558 EXPECT_LOOKUP(FUSE_ROOT_ID, "foo")
559 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
560 SET_OUT_HEADER_LEN(out, entry);
561 out.body.entry.attr.mode = S_IFDIR | 0755;
562 out.body.entry.nodeid = foo_ino;
563 out.body.entry.attr_valid = UINT64_MAX;
564 out.body.entry.entry_valid = 0; // immediate timeout
565 })));
566 EXPECT_LOOKUP(foo_ino, "bar")
567 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
568 SET_OUT_HEADER_LEN(out, entry);
569 out.body.entry.attr.mode = S_IFDIR | 0755;
570 out.body.entry.nodeid = bar_ino;
571 out.body.entry.attr_valid = UINT64_MAX;
572 out.body.entry.entry_valid = UINT64_MAX;
573 })));
574 expect_opendir(bar_ino);
575 EXPECT_LOOKUP(foo_ino, "..")
576 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
577 SET_OUT_HEADER_LEN(out, entry);
578 out.body.entry.attr.mode = S_IFDIR | 0755;
579 out.body.entry.nodeid = FUSE_ROOT_ID;
580 out.body.entry.attr_valid = UINT64_MAX;
581 out.body.entry.entry_valid = UINT64_MAX;
582 })));
583
584 int fd = open("mountpoint/foo/bar", O_EXEC| O_DIRECTORY);
585 ASSERT_LE(0, fd) << strerror(errno);
586 /* FreeBSD's fusefs driver always uses the same cache expiration time
587 * for ".." as for the directory itself. So we need to look up two
588 * levels to find an expired ".." cache entry.
589 */
590 EXPECT_EQ(0, faccessat(fd, "../..", F_OK, 0)) << strerror(errno);
591 }
592
593 /*
594 * Lookup ".." for a vnode with no valid parent nid
595 * Regression test for https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259974
596 * Since the file system is exportable, we should resolve the problem by
597 * sending a FUSE_LOOKUP for "..".
598 */
TEST_F(LookupExportable,dotdot_no_parent_nid)599 TEST_F(LookupExportable, dotdot_no_parent_nid)
600 {
601 uint64_t foo_ino = 42;
602 uint64_t bar_ino = 43;
603 int fd;
604
605 EXPECT_LOOKUP(FUSE_ROOT_ID, "foo")
606 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
607 SET_OUT_HEADER_LEN(out, entry);
608 out.body.entry.attr.mode = S_IFDIR | 0755;
609 out.body.entry.nodeid = foo_ino;
610 out.body.entry.attr_valid = UINT64_MAX;
611 out.body.entry.entry_valid = UINT64_MAX;
612 })));
613 EXPECT_LOOKUP(foo_ino, "bar")
614 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
615 SET_OUT_HEADER_LEN(out, entry);
616 out.body.entry.attr.mode = S_IFDIR | 0755;
617 out.body.entry.nodeid = bar_ino;
618 out.body.entry.attr_valid = UINT64_MAX;
619 out.body.entry.entry_valid = UINT64_MAX;
620 })));
621 EXPECT_CALL(*m_mock, process(
622 ResultOf([=](auto in) {
623 return (in.header.opcode == FUSE_OPENDIR);
624 }, Eq(true)),
625 _)
626 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
627 SET_OUT_HEADER_LEN(out, open);
628 })));
629 expect_forget(foo_ino, 1, NULL);
630 EXPECT_LOOKUP(bar_ino, "..")
631 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
632 SET_OUT_HEADER_LEN(out, entry);
633 out.body.entry.attr.mode = S_IFDIR | 0755;
634 out.body.entry.nodeid = foo_ino;
635 out.body.entry.attr_valid = UINT64_MAX;
636 out.body.entry.entry_valid = UINT64_MAX;
637 })));
638 EXPECT_LOOKUP(foo_ino, "..")
639 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
640 SET_OUT_HEADER_LEN(out, entry);
641 out.body.entry.attr.mode = S_IFDIR | 0755;
642 out.body.entry.nodeid = FUSE_ROOT_ID;
643 out.body.entry.attr_valid = UINT64_MAX;
644 out.body.entry.entry_valid = UINT64_MAX;
645 })));
646
647 fd = open("mountpoint/foo/bar", O_EXEC| O_DIRECTORY);
648 ASSERT_LE(0, fd) << strerror(errno);
649 // Try (and fail) to unmount the file system, to reclaim the mountpoint
650 // and foo vnodes.
651 ASSERT_NE(0, unmount("mountpoint", 0));
652 EXPECT_EQ(EBUSY, errno);
653 nap(); // Because vnode reclamation is asynchronous
654 EXPECT_EQ(0, faccessat(fd, "../..", F_OK, 0)) << strerror(errno);
655 }
656