1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 31 */ 32 33 extern "C" { 34 #include <sys/types.h> 35 #include <sys/resource.h> 36 #include <sys/stat.h> 37 #include <sys/time.h> 38 39 #include <fcntl.h> 40 #include <semaphore.h> 41 #include <signal.h> 42 } 43 44 #include "mockfs.hh" 45 #include "utils.hh" 46 47 using namespace testing; 48 49 class Setattr : public FuseTest { 50 public: 51 static sig_atomic_t s_sigxfsz; 52 }; 53 54 class RofsSetattr: public Setattr { 55 public: 56 virtual void SetUp() { 57 s_sigxfsz = 0; 58 m_ro = true; 59 Setattr::SetUp(); 60 } 61 }; 62 63 class Setattr_7_8: public Setattr { 64 public: 65 virtual void SetUp() { 66 m_kernel_minor_version = 8; 67 Setattr::SetUp(); 68 } 69 }; 70 71 72 sig_atomic_t Setattr::s_sigxfsz = 0; 73 74 void sigxfsz_handler(int __unused sig) { 75 Setattr::s_sigxfsz = 1; 76 } 77 78 /* 79 * If setattr returns a non-zero cache timeout, then subsequent VOP_GETATTRs 80 * should use the cached attributes, rather than query the daemon 81 */ 82 TEST_F(Setattr, attr_cache) 83 { 84 const char FULLPATH[] = "mountpoint/some_file.txt"; 85 const char RELPATH[] = "some_file.txt"; 86 const uint64_t ino = 42; 87 struct stat sb; 88 const mode_t newmode = 0644; 89 90 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 91 .WillRepeatedly(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 92 SET_OUT_HEADER_LEN(out, entry); 93 out.body.entry.attr.mode = S_IFREG | 0644; 94 out.body.entry.nodeid = ino; 95 out.body.entry.entry_valid = UINT64_MAX; 96 }))); 97 98 EXPECT_CALL(*m_mock, process( 99 ResultOf([](auto in) { 100 return (in.header.opcode == FUSE_SETATTR && 101 in.header.nodeid == ino); 102 }, Eq(true)), 103 _) 104 ).WillOnce(Invoke(ReturnImmediate([](auto in __unused, auto& out) { 105 SET_OUT_HEADER_LEN(out, attr); 106 out.body.attr.attr.ino = ino; // Must match nodeid 107 out.body.attr.attr.mode = S_IFREG | newmode; 108 out.body.attr.attr_valid = UINT64_MAX; 109 }))); 110 EXPECT_CALL(*m_mock, process( 111 ResultOf([](auto in) { 112 return (in.header.opcode == FUSE_GETATTR); 113 }, Eq(true)), 114 _) 115 ).Times(0); 116 117 /* Set an attribute with SETATTR */ 118 ASSERT_EQ(0, chmod(FULLPATH, newmode)) << strerror(errno); 119 120 /* The stat(2) should use cached attributes */ 121 ASSERT_EQ(0, stat(FULLPATH, &sb)); 122 EXPECT_EQ(S_IFREG | newmode, sb.st_mode); 123 } 124 125 /* Change the mode of a file */ 126 TEST_F(Setattr, chmod) 127 { 128 const char FULLPATH[] = "mountpoint/some_file.txt"; 129 const char RELPATH[] = "some_file.txt"; 130 const uint64_t ino = 42; 131 const mode_t oldmode = 0755; 132 const mode_t newmode = 0644; 133 134 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 135 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 136 SET_OUT_HEADER_LEN(out, entry); 137 out.body.entry.attr.mode = S_IFREG | oldmode; 138 out.body.entry.nodeid = ino; 139 }))); 140 141 EXPECT_CALL(*m_mock, process( 142 ResultOf([](auto in) { 143 uint32_t valid = FATTR_MODE; 144 return (in.header.opcode == FUSE_SETATTR && 145 in.header.nodeid == ino && 146 in.body.setattr.valid == valid && 147 in.body.setattr.mode == newmode); 148 }, Eq(true)), 149 _) 150 ).WillOnce(Invoke(ReturnImmediate([](auto in __unused, auto& out) { 151 SET_OUT_HEADER_LEN(out, attr); 152 out.body.attr.attr.ino = ino; // Must match nodeid 153 out.body.attr.attr.mode = S_IFREG | newmode; 154 }))); 155 EXPECT_EQ(0, chmod(FULLPATH, newmode)) << strerror(errno); 156 } 157 158 /* 159 * Chmod a multiply-linked file with cached attributes. Check that both files' 160 * attributes have changed. 161 */ 162 TEST_F(Setattr, chmod_multiply_linked) 163 { 164 const char FULLPATH0[] = "mountpoint/some_file.txt"; 165 const char RELPATH0[] = "some_file.txt"; 166 const char FULLPATH1[] = "mountpoint/other_file.txt"; 167 const char RELPATH1[] = "other_file.txt"; 168 struct stat sb; 169 const uint64_t ino = 42; 170 const mode_t oldmode = 0777; 171 const mode_t newmode = 0666; 172 173 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH0) 174 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 175 SET_OUT_HEADER_LEN(out, entry); 176 out.body.entry.attr.mode = S_IFREG | oldmode; 177 out.body.entry.nodeid = ino; 178 out.body.entry.attr.nlink = 2; 179 out.body.entry.attr_valid = UINT64_MAX; 180 out.body.entry.entry_valid = UINT64_MAX; 181 }))); 182 183 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH1) 184 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 185 SET_OUT_HEADER_LEN(out, entry); 186 out.body.entry.attr.mode = S_IFREG | oldmode; 187 out.body.entry.nodeid = ino; 188 out.body.entry.attr.nlink = 2; 189 out.body.entry.attr_valid = UINT64_MAX; 190 out.body.entry.entry_valid = UINT64_MAX; 191 }))); 192 193 EXPECT_CALL(*m_mock, process( 194 ResultOf([](auto in) { 195 uint32_t valid = FATTR_MODE; 196 return (in.header.opcode == FUSE_SETATTR && 197 in.header.nodeid == ino && 198 in.body.setattr.valid == valid && 199 in.body.setattr.mode == newmode); 200 }, Eq(true)), 201 _) 202 ).WillOnce(Invoke(ReturnImmediate([](auto in __unused, auto& out) { 203 SET_OUT_HEADER_LEN(out, attr); 204 out.body.attr.attr.ino = ino; 205 out.body.attr.attr.mode = S_IFREG | newmode; 206 out.body.attr.attr.nlink = 2; 207 out.body.attr.attr_valid = UINT64_MAX; 208 }))); 209 210 /* For a lookup of the 2nd file to get it into the cache*/ 211 ASSERT_EQ(0, stat(FULLPATH1, &sb)) << strerror(errno); 212 EXPECT_EQ(S_IFREG | oldmode, sb.st_mode); 213 214 ASSERT_EQ(0, chmod(FULLPATH0, newmode)) << strerror(errno); 215 ASSERT_EQ(0, stat(FULLPATH0, &sb)) << strerror(errno); 216 EXPECT_EQ(S_IFREG | newmode, sb.st_mode); 217 ASSERT_EQ(0, stat(FULLPATH1, &sb)) << strerror(errno); 218 EXPECT_EQ(S_IFREG | newmode, sb.st_mode); 219 } 220 221 222 /* Change the owner and group of a file */ 223 TEST_F(Setattr, chown) 224 { 225 const char FULLPATH[] = "mountpoint/some_file.txt"; 226 const char RELPATH[] = "some_file.txt"; 227 const uint64_t ino = 42; 228 const gid_t oldgroup = 66; 229 const gid_t newgroup = 99; 230 const uid_t olduser = 33; 231 const uid_t newuser = 44; 232 233 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 234 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 235 SET_OUT_HEADER_LEN(out, entry); 236 out.body.entry.attr.mode = S_IFREG | 0644; 237 out.body.entry.nodeid = ino; 238 out.body.entry.attr.gid = oldgroup; 239 out.body.entry.attr.uid = olduser; 240 }))); 241 242 EXPECT_CALL(*m_mock, process( 243 ResultOf([](auto in) { 244 uint32_t valid = FATTR_GID | FATTR_UID; 245 return (in.header.opcode == FUSE_SETATTR && 246 in.header.nodeid == ino && 247 in.body.setattr.valid == valid && 248 in.body.setattr.uid == newuser && 249 in.body.setattr.gid == newgroup); 250 }, Eq(true)), 251 _) 252 ).WillOnce(Invoke(ReturnImmediate([](auto in __unused, auto& out) { 253 SET_OUT_HEADER_LEN(out, attr); 254 out.body.attr.attr.ino = ino; // Must match nodeid 255 out.body.attr.attr.mode = S_IFREG | 0644; 256 out.body.attr.attr.uid = newuser; 257 out.body.attr.attr.gid = newgroup; 258 }))); 259 EXPECT_EQ(0, chown(FULLPATH, newuser, newgroup)) << strerror(errno); 260 } 261 262 263 264 /* 265 * FUSE daemons are allowed to check permissions however they like. If the 266 * daemon returns EPERM, even if the file permissions "should" grant access, 267 * then fuse(4) should return EPERM too. 268 */ 269 TEST_F(Setattr, eperm) 270 { 271 const char FULLPATH[] = "mountpoint/some_file.txt"; 272 const char RELPATH[] = "some_file.txt"; 273 const uint64_t ino = 42; 274 275 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 276 .WillOnce(Invoke(ReturnImmediate([=](auto in, auto& out) { 277 SET_OUT_HEADER_LEN(out, entry); 278 out.body.entry.attr.mode = S_IFREG | 0777; 279 out.body.entry.nodeid = ino; 280 out.body.entry.attr.uid = in.header.uid; 281 out.body.entry.attr.gid = in.header.gid; 282 }))); 283 284 EXPECT_CALL(*m_mock, process( 285 ResultOf([](auto in) { 286 return (in.header.opcode == FUSE_SETATTR && 287 in.header.nodeid == ino); 288 }, Eq(true)), 289 _) 290 ).WillOnce(Invoke(ReturnErrno(EPERM))); 291 EXPECT_NE(0, truncate(FULLPATH, 10)); 292 EXPECT_EQ(EPERM, errno); 293 } 294 295 /* Change the mode of an open file, by its file descriptor */ 296 TEST_F(Setattr, fchmod) 297 { 298 const char FULLPATH[] = "mountpoint/some_file.txt"; 299 const char RELPATH[] = "some_file.txt"; 300 uint64_t ino = 42; 301 int fd; 302 const mode_t oldmode = 0755; 303 const mode_t newmode = 0644; 304 305 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 306 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 307 SET_OUT_HEADER_LEN(out, entry); 308 out.body.entry.attr.mode = S_IFREG | oldmode; 309 out.body.entry.nodeid = ino; 310 out.body.entry.attr_valid = UINT64_MAX; 311 }))); 312 313 EXPECT_CALL(*m_mock, process( 314 ResultOf([=](auto in) { 315 return (in.header.opcode == FUSE_OPEN && 316 in.header.nodeid == ino); 317 }, Eq(true)), 318 _) 319 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 320 out.header.len = sizeof(out.header); 321 SET_OUT_HEADER_LEN(out, open); 322 }))); 323 324 EXPECT_CALL(*m_mock, process( 325 ResultOf([=](auto in) { 326 uint32_t valid = FATTR_MODE; 327 return (in.header.opcode == FUSE_SETATTR && 328 in.header.nodeid == ino && 329 in.body.setattr.valid == valid && 330 in.body.setattr.mode == newmode); 331 }, Eq(true)), 332 _) 333 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 334 SET_OUT_HEADER_LEN(out, attr); 335 out.body.attr.attr.ino = ino; // Must match nodeid 336 out.body.attr.attr.mode = S_IFREG | newmode; 337 }))); 338 339 fd = open(FULLPATH, O_RDONLY); 340 ASSERT_LE(0, fd) << strerror(errno); 341 ASSERT_EQ(0, fchmod(fd, newmode)) << strerror(errno); 342 leak(fd); 343 } 344 345 /* Change the size of an open file, by its file descriptor */ 346 TEST_F(Setattr, ftruncate) 347 { 348 const char FULLPATH[] = "mountpoint/some_file.txt"; 349 const char RELPATH[] = "some_file.txt"; 350 uint64_t ino = 42; 351 int fd; 352 uint64_t fh = 0xdeadbeef1a7ebabe; 353 const off_t oldsize = 99; 354 const off_t newsize = 12345; 355 356 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 357 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 358 SET_OUT_HEADER_LEN(out, entry); 359 out.body.entry.attr.mode = S_IFREG | 0755; 360 out.body.entry.nodeid = ino; 361 out.body.entry.attr_valid = UINT64_MAX; 362 out.body.entry.attr.size = oldsize; 363 }))); 364 365 EXPECT_CALL(*m_mock, process( 366 ResultOf([=](auto in) { 367 return (in.header.opcode == FUSE_OPEN && 368 in.header.nodeid == ino); 369 }, Eq(true)), 370 _) 371 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 372 out.header.len = sizeof(out.header); 373 SET_OUT_HEADER_LEN(out, open); 374 out.body.open.fh = fh; 375 }))); 376 377 EXPECT_CALL(*m_mock, process( 378 ResultOf([=](auto in) { 379 uint32_t valid = FATTR_SIZE | FATTR_FH; 380 return (in.header.opcode == FUSE_SETATTR && 381 in.header.nodeid == ino && 382 in.body.setattr.valid == valid && 383 in.body.setattr.fh == fh); 384 }, Eq(true)), 385 _) 386 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 387 SET_OUT_HEADER_LEN(out, attr); 388 out.body.attr.attr.ino = ino; // Must match nodeid 389 out.body.attr.attr.mode = S_IFREG | 0755; 390 out.body.attr.attr.size = newsize; 391 }))); 392 393 fd = open(FULLPATH, O_RDWR); 394 ASSERT_LE(0, fd) << strerror(errno); 395 ASSERT_EQ(0, ftruncate(fd, newsize)) << strerror(errno); 396 leak(fd); 397 } 398 399 /* Change the size of the file */ 400 TEST_F(Setattr, truncate) { 401 const char FULLPATH[] = "mountpoint/some_file.txt"; 402 const char RELPATH[] = "some_file.txt"; 403 const uint64_t ino = 42; 404 const uint64_t oldsize = 100'000'000; 405 const uint64_t newsize = 20'000'000; 406 407 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 408 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 409 SET_OUT_HEADER_LEN(out, entry); 410 out.body.entry.attr.mode = S_IFREG | 0644; 411 out.body.entry.nodeid = ino; 412 out.body.entry.attr.size = oldsize; 413 }))); 414 415 EXPECT_CALL(*m_mock, process( 416 ResultOf([](auto in) { 417 uint32_t valid = FATTR_SIZE; 418 return (in.header.opcode == FUSE_SETATTR && 419 in.header.nodeid == ino && 420 in.body.setattr.valid == valid && 421 in.body.setattr.size == newsize); 422 }, Eq(true)), 423 _) 424 ).WillOnce(Invoke(ReturnImmediate([](auto in __unused, auto& out) { 425 SET_OUT_HEADER_LEN(out, attr); 426 out.body.attr.attr.ino = ino; // Must match nodeid 427 out.body.attr.attr.mode = S_IFREG | 0644; 428 out.body.attr.attr.size = newsize; 429 }))); 430 EXPECT_EQ(0, truncate(FULLPATH, newsize)) << strerror(errno); 431 } 432 433 /* 434 * Truncating a file should discard cached data past the truncation point. 435 * This is a regression test for bug 233783. 436 * 437 * There are two distinct failure modes. The first one is a failure to zero 438 * the portion of the file's final buffer past EOF. It can be reproduced by 439 * fsx -WR -P /tmp -S10 fsx.bin 440 * 441 * The second is a failure to drop buffers beyond that. It can be reproduced by 442 * fsx -WR -P /tmp -S18 -n fsx.bin 443 * Also reproducible in sh with: 444 * $> /path/to/libfuse/build/example/passthrough -d /tmp/mnt 445 * $> cd /tmp/mnt/tmp 446 * $> dd if=/dev/random of=randfile bs=1k count=192 447 * $> truncate -s 1k randfile && truncate -s 192k randfile 448 * $> xxd randfile | less # xxd will wrongly show random data at offset 0x8000 449 */ 450 TEST_F(Setattr, truncate_discards_cached_data) { 451 const char FULLPATH[] = "mountpoint/some_file.txt"; 452 const char RELPATH[] = "some_file.txt"; 453 void *w0buf, *r0buf, *r1buf, *expected; 454 off_t w0_offset = 0; 455 size_t w0_size = 0x30000; 456 off_t r0_offset = 0; 457 off_t r0_size = w0_size; 458 size_t trunc0_size = 0x400; 459 size_t trunc1_size = w0_size; 460 off_t r1_offset = trunc0_size; 461 off_t r1_size = w0_size - trunc0_size; 462 size_t cur_size = 0; 463 const uint64_t ino = 42; 464 mode_t mode = S_IFREG | 0644; 465 int fd, r; 466 bool should_have_data = false; 467 468 w0buf = malloc(w0_size); 469 ASSERT_NE(nullptr, w0buf) << strerror(errno); 470 memset(w0buf, 'X', w0_size); 471 472 r0buf = malloc(r0_size); 473 ASSERT_NE(nullptr, r0buf) << strerror(errno); 474 r1buf = malloc(r1_size); 475 ASSERT_NE(nullptr, r1buf) << strerror(errno); 476 477 expected = malloc(r1_size); 478 ASSERT_NE(nullptr, expected) << strerror(errno); 479 memset(expected, 0, r1_size); 480 481 expect_lookup(RELPATH, ino, mode, 0, 1); 482 expect_open(ino, O_RDWR, 1); 483 EXPECT_CALL(*m_mock, process( 484 ResultOf([=](auto in) { 485 return (in.header.opcode == FUSE_GETATTR && 486 in.header.nodeid == ino); 487 }, Eq(true)), 488 _) 489 ).WillRepeatedly(Invoke(ReturnImmediate([&](auto i __unused, auto& out) { 490 SET_OUT_HEADER_LEN(out, attr); 491 out.body.attr.attr.ino = ino; 492 out.body.attr.attr.mode = mode; 493 out.body.attr.attr.size = cur_size; 494 }))); 495 EXPECT_CALL(*m_mock, process( 496 ResultOf([=](auto in) { 497 return (in.header.opcode == FUSE_WRITE); 498 }, Eq(true)), 499 _) 500 ).WillRepeatedly(Invoke(ReturnImmediate([&](auto in, auto& out) { 501 SET_OUT_HEADER_LEN(out, write); 502 out.body.attr.attr.ino = ino; 503 out.body.write.size = in.body.write.size; 504 cur_size = std::max(static_cast<uint64_t>(cur_size), 505 in.body.write.size + in.body.write.offset); 506 }))); 507 508 EXPECT_CALL(*m_mock, process( 509 ResultOf([=](auto in) { 510 return (in.header.opcode == FUSE_SETATTR && 511 in.header.nodeid == ino && 512 (in.body.setattr.valid & FATTR_SIZE)); 513 }, Eq(true)), 514 _) 515 ).WillRepeatedly(Invoke(ReturnImmediate([&](auto in, auto& out) { 516 auto trunc_size = in.body.setattr.size; 517 SET_OUT_HEADER_LEN(out, attr); 518 out.body.attr.attr.ino = ino; 519 out.body.attr.attr.mode = mode; 520 out.body.attr.attr.size = trunc_size; 521 cur_size = trunc_size; 522 }))); 523 524 EXPECT_CALL(*m_mock, process( 525 ResultOf([=](auto in) { 526 return (in.header.opcode == FUSE_READ); 527 }, Eq(true)), 528 _) 529 ).WillRepeatedly(Invoke(ReturnImmediate([&](auto in, auto& out) { 530 auto osize = std::min( 531 static_cast<uint64_t>(cur_size) - in.body.read.offset, 532 static_cast<uint64_t>(in.body.read.size)); 533 out.header.len = sizeof(struct fuse_out_header) + osize; 534 if (should_have_data) 535 memset(out.body.bytes, 'X', osize); 536 else 537 bzero(out.body.bytes, osize); 538 }))); 539 540 fd = open(FULLPATH, O_RDWR, 0644); 541 ASSERT_LE(0, fd) << strerror(errno); 542 543 /* Fill the file with Xs */ 544 ASSERT_EQ(static_cast<ssize_t>(w0_size), 545 pwrite(fd, w0buf, w0_size, w0_offset)); 546 should_have_data = true; 547 /* Fill the cache */ 548 ASSERT_EQ(static_cast<ssize_t>(r0_size), 549 pread(fd, r0buf, r0_size, r0_offset)); 550 /* 1st truncate should discard cached data */ 551 EXPECT_EQ(0, ftruncate(fd, trunc0_size)) << strerror(errno); 552 should_have_data = false; 553 /* 2nd truncate extends file into previously cached data */ 554 EXPECT_EQ(0, ftruncate(fd, trunc1_size)) << strerror(errno); 555 /* Read should return all zeros */ 556 ASSERT_EQ(static_cast<ssize_t>(r1_size), 557 pread(fd, r1buf, r1_size, r1_offset)); 558 559 r = memcmp(expected, r1buf, r1_size); 560 ASSERT_EQ(0, r); 561 562 free(expected); 563 free(r1buf); 564 free(r0buf); 565 free(w0buf); 566 567 leak(fd); 568 } 569 570 /* truncate should fail if it would cause the file to exceed RLIMIT_FSIZE */ 571 TEST_F(Setattr, truncate_rlimit_rsize) 572 { 573 const char FULLPATH[] = "mountpoint/some_file.txt"; 574 const char RELPATH[] = "some_file.txt"; 575 struct rlimit rl; 576 const uint64_t ino = 42; 577 const uint64_t oldsize = 0; 578 const uint64_t newsize = 100'000'000; 579 580 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 581 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 582 SET_OUT_HEADER_LEN(out, entry); 583 out.body.entry.attr.mode = S_IFREG | 0644; 584 out.body.entry.nodeid = ino; 585 out.body.entry.attr.size = oldsize; 586 }))); 587 588 rl.rlim_cur = newsize / 2; 589 rl.rlim_max = 10 * newsize; 590 ASSERT_EQ(0, setrlimit(RLIMIT_FSIZE, &rl)) << strerror(errno); 591 ASSERT_NE(SIG_ERR, signal(SIGXFSZ, sigxfsz_handler)) << strerror(errno); 592 593 EXPECT_EQ(-1, truncate(FULLPATH, newsize)); 594 EXPECT_EQ(EFBIG, errno); 595 EXPECT_EQ(1, s_sigxfsz); 596 } 597 598 /* Change a file's timestamps */ 599 TEST_F(Setattr, utimensat) { 600 const char FULLPATH[] = "mountpoint/some_file.txt"; 601 const char RELPATH[] = "some_file.txt"; 602 const uint64_t ino = 42; 603 const timespec oldtimes[2] = { 604 {.tv_sec = 1, .tv_nsec = 2}, 605 {.tv_sec = 3, .tv_nsec = 4}, 606 }; 607 const timespec newtimes[2] = { 608 {.tv_sec = 5, .tv_nsec = 6}, 609 {.tv_sec = 7, .tv_nsec = 8}, 610 }; 611 612 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 613 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 614 SET_OUT_HEADER_LEN(out, entry); 615 out.body.entry.attr.mode = S_IFREG | 0644; 616 out.body.entry.nodeid = ino; 617 out.body.entry.attr_valid = UINT64_MAX; 618 out.body.entry.attr.atime = oldtimes[0].tv_sec; 619 out.body.entry.attr.atimensec = oldtimes[0].tv_nsec; 620 out.body.entry.attr.mtime = oldtimes[1].tv_sec; 621 out.body.entry.attr.mtimensec = oldtimes[1].tv_nsec; 622 }))); 623 624 EXPECT_CALL(*m_mock, process( 625 ResultOf([=](auto in) { 626 uint32_t valid = FATTR_ATIME | FATTR_MTIME; 627 return (in.header.opcode == FUSE_SETATTR && 628 in.header.nodeid == ino && 629 in.body.setattr.valid == valid && 630 (time_t)in.body.setattr.atime == 631 newtimes[0].tv_sec && 632 (long)in.body.setattr.atimensec == 633 newtimes[0].tv_nsec && 634 (time_t)in.body.setattr.mtime == 635 newtimes[1].tv_sec && 636 (long)in.body.setattr.mtimensec == 637 newtimes[1].tv_nsec); 638 }, Eq(true)), 639 _) 640 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 641 SET_OUT_HEADER_LEN(out, attr); 642 out.body.attr.attr.ino = ino; // Must match nodeid 643 out.body.attr.attr.mode = S_IFREG | 0644; 644 out.body.attr.attr.atime = newtimes[0].tv_sec; 645 out.body.attr.attr.atimensec = newtimes[0].tv_nsec; 646 out.body.attr.attr.mtime = newtimes[1].tv_sec; 647 out.body.attr.attr.mtimensec = newtimes[1].tv_nsec; 648 }))); 649 EXPECT_EQ(0, utimensat(AT_FDCWD, FULLPATH, &newtimes[0], 0)) 650 << strerror(errno); 651 } 652 653 /* Change a file mtime but not its atime */ 654 TEST_F(Setattr, utimensat_mtime_only) { 655 const char FULLPATH[] = "mountpoint/some_file.txt"; 656 const char RELPATH[] = "some_file.txt"; 657 const uint64_t ino = 42; 658 const timespec oldtimes[2] = { 659 {.tv_sec = 1, .tv_nsec = 2}, 660 {.tv_sec = 3, .tv_nsec = 4}, 661 }; 662 const timespec newtimes[2] = { 663 {.tv_sec = 5, .tv_nsec = UTIME_OMIT}, 664 {.tv_sec = 7, .tv_nsec = 8}, 665 }; 666 667 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 668 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 669 SET_OUT_HEADER_LEN(out, entry); 670 out.body.entry.attr.mode = S_IFREG | 0644; 671 out.body.entry.nodeid = ino; 672 out.body.entry.attr_valid = UINT64_MAX; 673 out.body.entry.attr.atime = oldtimes[0].tv_sec; 674 out.body.entry.attr.atimensec = oldtimes[0].tv_nsec; 675 out.body.entry.attr.mtime = oldtimes[1].tv_sec; 676 out.body.entry.attr.mtimensec = oldtimes[1].tv_nsec; 677 }))); 678 679 EXPECT_CALL(*m_mock, process( 680 ResultOf([=](auto in) { 681 uint32_t valid = FATTR_MTIME; 682 return (in.header.opcode == FUSE_SETATTR && 683 in.header.nodeid == ino && 684 in.body.setattr.valid == valid && 685 (time_t)in.body.setattr.mtime == 686 newtimes[1].tv_sec && 687 (long)in.body.setattr.mtimensec == 688 newtimes[1].tv_nsec); 689 }, Eq(true)), 690 _) 691 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 692 SET_OUT_HEADER_LEN(out, attr); 693 out.body.attr.attr.ino = ino; // Must match nodeid 694 out.body.attr.attr.mode = S_IFREG | 0644; 695 out.body.attr.attr.atime = oldtimes[0].tv_sec; 696 out.body.attr.attr.atimensec = oldtimes[0].tv_nsec; 697 out.body.attr.attr.mtime = newtimes[1].tv_sec; 698 out.body.attr.attr.mtimensec = newtimes[1].tv_nsec; 699 }))); 700 EXPECT_EQ(0, utimensat(AT_FDCWD, FULLPATH, &newtimes[0], 0)) 701 << strerror(errno); 702 } 703 704 /* 705 * Set a file's mtime and atime to now 706 * 707 * The design of FreeBSD's VFS does not allow fusefs to set just one of atime 708 * or mtime to UTIME_NOW; it's both or neither. 709 */ 710 TEST_F(Setattr, utimensat_utime_now) { 711 const char FULLPATH[] = "mountpoint/some_file.txt"; 712 const char RELPATH[] = "some_file.txt"; 713 const uint64_t ino = 42; 714 const timespec oldtimes[2] = { 715 {.tv_sec = 1, .tv_nsec = 2}, 716 {.tv_sec = 3, .tv_nsec = 4}, 717 }; 718 const timespec newtimes[2] = { 719 {.tv_sec = 0, .tv_nsec = UTIME_NOW}, 720 {.tv_sec = 0, .tv_nsec = UTIME_NOW}, 721 }; 722 /* "now" is whatever the server says it is */ 723 const timespec now[2] = { 724 {.tv_sec = 5, .tv_nsec = 7}, 725 {.tv_sec = 6, .tv_nsec = 8}, 726 }; 727 struct stat sb; 728 729 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 730 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 731 SET_OUT_HEADER_LEN(out, entry); 732 out.body.entry.attr.mode = S_IFREG | 0644; 733 out.body.entry.nodeid = ino; 734 out.body.entry.attr_valid = UINT64_MAX; 735 out.body.entry.entry_valid = UINT64_MAX; 736 out.body.entry.attr.atime = oldtimes[0].tv_sec; 737 out.body.entry.attr.atimensec = oldtimes[0].tv_nsec; 738 out.body.entry.attr.mtime = oldtimes[1].tv_sec; 739 out.body.entry.attr.mtimensec = oldtimes[1].tv_nsec; 740 }))); 741 742 EXPECT_CALL(*m_mock, process( 743 ResultOf([=](auto in) { 744 uint32_t valid = FATTR_ATIME | FATTR_ATIME_NOW | 745 FATTR_MTIME | FATTR_MTIME_NOW; 746 return (in.header.opcode == FUSE_SETATTR && 747 in.header.nodeid == ino && 748 in.body.setattr.valid == valid); 749 }, Eq(true)), 750 _) 751 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 752 SET_OUT_HEADER_LEN(out, attr); 753 out.body.attr.attr.ino = ino; // Must match nodeid 754 out.body.attr.attr.mode = S_IFREG | 0644; 755 out.body.attr.attr.atime = now[0].tv_sec; 756 out.body.attr.attr.atimensec = now[0].tv_nsec; 757 out.body.attr.attr.mtime = now[1].tv_sec; 758 out.body.attr.attr.mtimensec = now[1].tv_nsec; 759 out.body.attr.attr_valid = UINT64_MAX; 760 }))); 761 ASSERT_EQ(0, utimensat(AT_FDCWD, FULLPATH, &newtimes[0], 0)) 762 << strerror(errno); 763 ASSERT_EQ(0, stat(FULLPATH, &sb)) << strerror(errno); 764 EXPECT_EQ(now[0].tv_sec, sb.st_atim.tv_sec); 765 EXPECT_EQ(now[0].tv_nsec, sb.st_atim.tv_nsec); 766 EXPECT_EQ(now[1].tv_sec, sb.st_mtim.tv_sec); 767 EXPECT_EQ(now[1].tv_nsec, sb.st_mtim.tv_nsec); 768 } 769 770 /* 771 * FUSE_SETATTR returns a different file type, even though the entry cache 772 * hasn't expired. This is a server bug! It probably means that the server 773 * removed the file and recreated it with the same inode but a different vtyp. 774 * The best thing fusefs can do is return ENOENT to the caller. After all, the 775 * entry must not have existed recently. 776 */ 777 TEST_F(Setattr, vtyp_conflict) 778 { 779 const char FULLPATH[] = "mountpoint/some_file.txt"; 780 const char RELPATH[] = "some_file.txt"; 781 const uint64_t ino = 42; 782 uid_t newuser = 12345; 783 sem_t sem; 784 785 ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno); 786 787 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 788 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 789 SET_OUT_HEADER_LEN(out, entry); 790 out.body.entry.attr.mode = S_IFREG | 0777; 791 out.body.entry.nodeid = ino; 792 out.body.entry.entry_valid = UINT64_MAX; 793 }))); 794 795 EXPECT_CALL(*m_mock, process( 796 ResultOf([](auto in) { 797 return (in.header.opcode == FUSE_SETATTR && 798 in.header.nodeid == ino); 799 }, Eq(true)), 800 _) 801 ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 802 SET_OUT_HEADER_LEN(out, attr); 803 out.body.attr.attr.ino = ino; 804 out.body.attr.attr.mode = S_IFDIR | 0777; // Changed! 805 out.body.attr.attr.uid = newuser; 806 }))); 807 // We should reclaim stale vnodes 808 expect_forget(ino, 1, &sem); 809 810 EXPECT_NE(0, chown(FULLPATH, newuser, -1)); 811 EXPECT_EQ(ENOENT, errno); 812 813 sem_wait(&sem); 814 sem_destroy(&sem); 815 } 816 817 /* On a read-only mount, no attributes may be changed */ 818 TEST_F(RofsSetattr, erofs) 819 { 820 const char FULLPATH[] = "mountpoint/some_file.txt"; 821 const char RELPATH[] = "some_file.txt"; 822 const uint64_t ino = 42; 823 const mode_t oldmode = 0755; 824 const mode_t newmode = 0644; 825 826 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 827 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 828 SET_OUT_HEADER_LEN(out, entry); 829 out.body.entry.attr.mode = S_IFREG | oldmode; 830 out.body.entry.nodeid = ino; 831 }))); 832 833 ASSERT_EQ(-1, chmod(FULLPATH, newmode)); 834 ASSERT_EQ(EROFS, errno); 835 } 836 837 /* Change the mode of a file */ 838 TEST_F(Setattr_7_8, chmod) 839 { 840 const char FULLPATH[] = "mountpoint/some_file.txt"; 841 const char RELPATH[] = "some_file.txt"; 842 const uint64_t ino = 42; 843 const mode_t oldmode = 0755; 844 const mode_t newmode = 0644; 845 846 EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) 847 .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 848 SET_OUT_HEADER_LEN(out, entry_7_8); 849 out.body.entry.attr.mode = S_IFREG | oldmode; 850 out.body.entry.nodeid = ino; 851 }))); 852 853 EXPECT_CALL(*m_mock, process( 854 ResultOf([](auto in) { 855 uint32_t valid = FATTR_MODE; 856 return (in.header.opcode == FUSE_SETATTR && 857 in.header.nodeid == ino && 858 in.body.setattr.valid == valid && 859 in.body.setattr.mode == newmode); 860 }, Eq(true)), 861 _) 862 ).WillOnce(Invoke(ReturnImmediate([](auto in __unused, auto& out) { 863 SET_OUT_HEADER_LEN(out, attr_7_8); 864 out.body.attr.attr.ino = ino; // Must match nodeid 865 out.body.attr.attr.mode = S_IFREG | newmode; 866 }))); 867 EXPECT_EQ(0, chmod(FULLPATH, newmode)) << strerror(errno); 868 } 869