plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) International Business Machines Corp., 2001 |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 13 | * the GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * NAME |
nstraz | fa31d55 | 2002-05-14 16:50:06 +0000 | [diff] [blame] | 22 | * fcntl21.c |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 23 | * |
| 24 | * DESCRIPTION |
| 25 | * Check locking of regions of a file |
| 26 | * |
| 27 | * ALGORITHM |
| 28 | * Test changing lock sections around a read lock |
| 29 | * |
| 30 | * USAGE |
nstraz | fa31d55 | 2002-05-14 16:50:06 +0000 | [diff] [blame] | 31 | * fcntl21 |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 32 | * |
| 33 | * HISTORY |
| 34 | * 07/2001 Ported by Wayne Boyer |
| 35 | * |
| 36 | * RESTRICTIONS |
| 37 | * None |
| 38 | */ |
| 39 | |
| 40 | #include <fcntl.h> |
| 41 | #include <errno.h> |
| 42 | #include <signal.h> |
| 43 | #include <test.h> |
| 44 | #include <usctest.h> |
| 45 | |
| 46 | #define STRINGSIZE 27 |
| 47 | #define STRING "abcdefghijklmnopqrstuvwxyz\n" |
| 48 | #define STOP 0xFFF0 |
| 49 | |
| 50 | int parent_pipe[2]; |
| 51 | int child_pipe[2]; |
| 52 | int fd; |
plars | a1e518d | 2002-09-09 18:23:52 +0000 | [diff] [blame^] | 53 | pid_t parent_pid, child_pid; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 54 | char *file; |
| 55 | |
| 56 | void parent_put(); |
| 57 | void parent_get(); |
| 58 | void child_put(); |
| 59 | void child_get(); |
| 60 | void stop_child(); |
plars | a1e518d | 2002-09-09 18:23:52 +0000 | [diff] [blame^] | 61 | void compare_lock(struct flock *, short, short, int, int, pid_t); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 62 | void unlock_file(); |
| 63 | void do_test(struct flock *, short, short, int, int); |
| 64 | void catch_child(); |
| 65 | char *str_type(); |
| 66 | int do_lock(int, short, short, int, int); |
| 67 | |
nstraz | fa31d55 | 2002-05-14 16:50:06 +0000 | [diff] [blame] | 68 | char *TCID = "fcntl21"; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 69 | int TST_TOTAL = 1; |
| 70 | extern int Tst_count; |
| 71 | |
| 72 | void setup(void); |
| 73 | void cleanup(void); |
| 74 | int fail; |
| 75 | |
| 76 | main(int ac, char **av) |
| 77 | { |
| 78 | struct flock tl; |
| 79 | |
| 80 | int lc; /* loop counter */ |
| 81 | char *msg; /* message returned from parse_opts */ |
| 82 | |
| 83 | /* parse standard options */ |
| 84 | if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){ |
| 85 | tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg); |
| 86 | } |
| 87 | |
| 88 | setup(); /* global setup */ |
| 89 | |
| 90 | /* Check for looping state if -i option is given */ |
| 91 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 92 | /* reset Tst_count in case we are looping */ |
| 93 | Tst_count = 0; |
| 94 | |
| 95 | if ((child_pid = fork()) == 0) { |
| 96 | do_child(); |
| 97 | } |
| 98 | if (child_pid < 0) { |
| 99 | tst_resm(TFAIL, "Fork failed"); |
| 100 | cleanup(); |
| 101 | } |
| 102 | |
| 103 | (void)close(parent_pipe[0]); |
| 104 | (void)close(child_pipe[1]); |
| 105 | |
| 106 | block1: |
| 107 | tst_resm(TINFO, "Enter block 1"); |
| 108 | fail = 0; |
| 109 | /* |
| 110 | * Set a read lock on the whole file |
| 111 | */ |
| 112 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 0, 0) < 0) { |
| 113 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 114 | file, errno); |
| 115 | fail = 1; |
| 116 | } |
| 117 | |
| 118 | /* |
| 119 | * Test to make sure it's there. |
| 120 | */ |
| 121 | do_test(&tl, (short)F_WRLCK, (short)0, 0, 0); |
| 122 | compare_lock(&tl, (short)F_RDLCK, (short)0, 0, 0, parent_pid); |
| 123 | |
| 124 | /* |
| 125 | * remove the lock set above |
| 126 | */ |
| 127 | unlock_file(); |
| 128 | |
| 129 | if (fail) { |
| 130 | tst_resm(TINFO, "Test block 1: FAILED"); |
| 131 | } else { |
| 132 | tst_resm(TINFO, "Test block 1: PASSED"); |
| 133 | } |
| 134 | tst_resm(TINFO, "Exit block 1"); |
| 135 | |
| 136 | block2: |
| 137 | tst_resm(TINFO, "Enter block 2"); |
| 138 | fail = 0; |
| 139 | |
| 140 | /* |
| 141 | * Set a write lock on the whole file |
| 142 | */ |
| 143 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 0, 0) < 0) { |
| 144 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 145 | file, errno); |
| 146 | fail = 1; |
| 147 | } |
| 148 | |
| 149 | /* |
| 150 | * Test to make sure its there |
| 151 | */ |
| 152 | do_test(&tl, (short)F_WRLCK, (short)0, 0, 0); |
| 153 | compare_lock(&tl, (short)F_WRLCK, (short)0, 0, 0, parent_pid); |
| 154 | |
| 155 | /* |
| 156 | * remove the lock set above |
| 157 | */ |
| 158 | unlock_file(); |
| 159 | |
| 160 | if (fail) { |
| 161 | tst_resm(TINFO, "Test block 2: FAILED"); |
| 162 | } else { |
| 163 | tst_resm(TINFO, "Test block 2: PASSED"); |
| 164 | } |
| 165 | |
| 166 | tst_resm(TINFO, "Exit block 2"); |
| 167 | |
| 168 | block3: |
| 169 | tst_resm(TINFO, "Enter block 3"); |
| 170 | fail = 0; |
| 171 | |
| 172 | /* |
| 173 | * Add a read lock to the middle of the file and a write |
| 174 | * at the begining |
| 175 | */ |
| 176 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 10, 5) < 0) { |
| 177 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 178 | file, errno); |
| 179 | fail = 1; |
| 180 | } |
| 181 | |
| 182 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 1, 5) < 0) { |
| 183 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 184 | file, errno); |
| 185 | fail = 1; |
| 186 | } |
| 187 | |
| 188 | /* |
| 189 | * Test write lock |
| 190 | */ |
| 191 | do_test(&tl, F_WRLCK, 0, 0, 0); |
| 192 | compare_lock(&tl, (short)F_WRLCK, (short)0, 1, 5, parent_pid); |
| 193 | |
| 194 | /* |
| 195 | * Test read lock |
| 196 | */ |
| 197 | do_test(&tl, F_WRLCK, 0, 6, 0); |
| 198 | compare_lock(&tl, (short)F_RDLCK, (short)0, 10, 5, parent_pid); |
| 199 | |
| 200 | /* |
| 201 | * Test that the rest of the file is unlocked |
| 202 | */ |
| 203 | do_test(&tl, F_WRLCK, 0, 15, 0); |
| 204 | compare_lock(&tl, (short)F_UNLCK, (short)0, 15, 0, 0); |
| 205 | |
| 206 | /* |
| 207 | * remove all the locks set above |
| 208 | */ |
| 209 | unlock_file(); |
| 210 | |
| 211 | if (fail) { |
| 212 | tst_resm(TINFO, "Test block 3: FAILED"); |
| 213 | } else { |
| 214 | tst_resm(TINFO, "Test block 3 : PASSED"); |
| 215 | } |
| 216 | tst_resm(TINFO, "Exit block 3"); |
| 217 | |
| 218 | block4: |
| 219 | tst_resm(TINFO, "Enter block 4"); |
| 220 | fail = 0; |
| 221 | |
| 222 | /* |
| 223 | * Set a read lock at the middle of the file and a |
| 224 | * write lock just before |
| 225 | */ |
| 226 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 10, 5) < 0) { |
| 227 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 228 | file, errno); |
| 229 | fail = 1; |
| 230 | } |
| 231 | |
| 232 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 5, 5) < 0) { |
| 233 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 234 | file, errno); |
| 235 | fail = 1; |
| 236 | } |
| 237 | |
| 238 | /* |
| 239 | * Test the write lock |
| 240 | */ |
| 241 | do_test(&tl, (short)F_WRLCK, (short)0, 0, 0); |
| 242 | compare_lock(&tl, (short)F_WRLCK, (short)0, 5, 5, parent_pid); |
| 243 | |
| 244 | /* |
| 245 | * Test the read lock. |
| 246 | */ |
| 247 | do_test(&tl, (short)F_WRLCK, (short)0, 10, 0); |
| 248 | compare_lock(&tl, (short)F_RDLCK, (short)0, 10, 5, parent_pid); |
| 249 | |
| 250 | /* |
| 251 | * Test to make sure the rest of the file is unlocked. |
| 252 | */ |
| 253 | do_test(&tl, (short)F_WRLCK, (short)0, 15, 0); |
| 254 | compare_lock(&tl, (short)F_UNLCK, (short)0, 15, 0, 0); |
| 255 | |
| 256 | /* |
| 257 | * remove all the locks set above |
| 258 | */ |
| 259 | unlock_file(); |
| 260 | |
| 261 | if (fail) { |
| 262 | tst_resm(TINFO, "Test block 4: FAILED"); |
| 263 | } else { |
| 264 | tst_resm(TINFO, "Test block 4: PASSED"); |
| 265 | } |
| 266 | tst_resm(TINFO, "Exit block 4"); |
| 267 | |
| 268 | block5: |
| 269 | tst_resm(TINFO, "Enter block 5"); |
| 270 | fail = 0; |
| 271 | |
| 272 | /* |
| 273 | * Set a read lock in the middle and a write lock that |
| 274 | * ends at the first byte of the read lock |
| 275 | */ |
| 276 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 10, 5) < 0) { |
| 277 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 278 | file, errno); |
| 279 | fail = 1; |
| 280 | } |
| 281 | |
| 282 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 5, 6) < 0) { |
| 283 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 284 | file, errno); |
| 285 | fail = 1; |
| 286 | } |
| 287 | |
| 288 | /* |
| 289 | * Test write lock |
| 290 | */ |
| 291 | do_test(&tl, (short)F_WRLCK, (short)0, 0, 0); |
| 292 | compare_lock(&tl, (short)F_WRLCK, (short)0, 5, 6, parent_pid); |
| 293 | |
| 294 | /* |
| 295 | * Test read lock |
| 296 | */ |
| 297 | do_test(&tl, (short)F_WRLCK, (short)0, 11, 0); |
| 298 | compare_lock(&tl, (short)F_RDLCK, (short)0, 11, 4, parent_pid); |
| 299 | |
| 300 | /* |
| 301 | * Test to make sure the rest of the file is unlocked. |
| 302 | */ |
| 303 | do_test(&tl, (short)F_WRLCK, (short)0, 15, 0); |
| 304 | compare_lock(&tl, (short)F_UNLCK, (short)0, 15, 0, 0); |
| 305 | |
| 306 | /* |
| 307 | * remove all the locks set above |
| 308 | */ |
| 309 | unlock_file(); |
| 310 | |
| 311 | if (fail) { |
| 312 | tst_resm(TINFO, "Test block 5: FAILED"); |
| 313 | } else { |
| 314 | tst_resm(TINFO, "Test block 5: PASSED"); |
| 315 | } |
| 316 | tst_resm(TINFO, "Exit block 5"); |
| 317 | |
| 318 | block6: |
| 319 | tst_resm(TINFO, "Enter block 6"); |
| 320 | fail = 0; |
| 321 | |
| 322 | /* |
| 323 | * Set a read lock on the middle of the file and a write |
| 324 | * lock that overlaps the front of the read. |
| 325 | */ |
| 326 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 10, 5) < 0) { |
| 327 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 328 | file, errno); |
| 329 | fail = 1; |
| 330 | } |
| 331 | |
| 332 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 5, 8) < 0) { |
| 333 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 334 | file, errno); |
| 335 | fail = 1; |
| 336 | } |
| 337 | |
| 338 | /* |
| 339 | * Test the write lock |
| 340 | */ |
| 341 | do_test(&tl, (short)F_WRLCK, (short)0, 5, 0); |
| 342 | compare_lock(&tl, (short)F_WRLCK, (short)0, 5, 8, parent_pid); |
| 343 | |
| 344 | /* |
| 345 | * Test the read lock |
| 346 | */ |
| 347 | do_test(&tl, (short)F_WRLCK, (short)0, 13, 0); |
| 348 | compare_lock(&tl, (short)F_RDLCK, (short)0, 13, 2, parent_pid); |
| 349 | |
| 350 | /* |
| 351 | * Test to make sure the rest of the file is unlocked. |
| 352 | */ |
| 353 | do_test(&tl, (short)F_WRLCK, (short)0, 15, 0); |
| 354 | compare_lock(&tl, (short)F_UNLCK, (short)0, 15, 0, 0); |
| 355 | |
| 356 | /* |
| 357 | * remove all the locks set above |
| 358 | */ |
| 359 | unlock_file(); |
| 360 | |
| 361 | if (fail) { |
| 362 | tst_resm(TINFO, "Test block 6 FAILED"); |
| 363 | } else { |
| 364 | tst_resm(TINFO, "Test block 6 PASSED"); |
| 365 | } |
| 366 | tst_resm(TINFO, "Exit block 6"); |
| 367 | |
| 368 | block7: |
| 369 | tst_resm(TINFO, "Enter block 7"); |
| 370 | fail = 0; |
| 371 | |
| 372 | /* |
| 373 | * Set a read lock in the middle of a file and a write |
| 374 | * lock in the middle of it |
| 375 | */ |
| 376 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 10, 10) < 0) { |
| 377 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 378 | file, errno); |
| 379 | fail = 1; |
| 380 | } |
| 381 | |
| 382 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 13, 5) < 0) { |
| 383 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 384 | file, errno); |
| 385 | fail = 1; |
| 386 | } |
| 387 | |
| 388 | /* |
| 389 | * Test the first read lock |
| 390 | */ |
| 391 | do_test(&tl, (short)F_WRLCK, (short)0 , 0, 0); |
| 392 | compare_lock(&tl, (short)F_RDLCK, (short)0, 10, 3, parent_pid); |
| 393 | |
| 394 | /* |
| 395 | * Test the write lock |
| 396 | */ |
| 397 | do_test(&tl, (short)F_WRLCK, (short)0, 13, 0); |
| 398 | compare_lock(&tl, (short)F_WRLCK, (short)0, 13, 5, parent_pid); |
| 399 | |
| 400 | /* |
| 401 | * Test the second read lock |
| 402 | */ |
| 403 | do_test(&tl, (short)F_WRLCK, (short)0, 18, 0); |
| 404 | compare_lock(&tl, (short)F_RDLCK, (short)0, 18, 2, parent_pid); |
| 405 | |
| 406 | /* |
| 407 | * Test to make sure the rest of the file is unlocked |
| 408 | */ |
| 409 | do_test(&tl, (short)F_WRLCK, (short)0, 20, 0); |
| 410 | compare_lock(&tl, (short)F_UNLCK, (short)0, 20, 0, 0); |
| 411 | |
| 412 | /* |
| 413 | * remove all the locks set above. |
| 414 | */ |
| 415 | unlock_file(); |
| 416 | if (fail) { |
| 417 | tst_resm(TINFO, "Test block 7: FAILED"); |
| 418 | } else { |
| 419 | tst_resm(TINFO, "Test block 7: PASSED"); |
| 420 | } |
| 421 | tst_resm(TINFO, "Exit block 7"); |
| 422 | |
| 423 | block8: |
| 424 | tst_resm(TINFO, "Enter block 8"); |
| 425 | fail = 0; |
| 426 | /* |
| 427 | * Set a read lock in the middle of the file and a write |
| 428 | * lock that overlaps the end |
| 429 | */ |
| 430 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 10, 5) < 0) { |
| 431 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 432 | file, errno); |
| 433 | fail = 1; |
| 434 | } |
| 435 | |
| 436 | /* |
| 437 | * Set a write lock on the whole file |
| 438 | */ |
| 439 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 13, 5) < 0) { |
| 440 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 441 | file, errno); |
| 442 | fail = 1; |
| 443 | } |
| 444 | |
| 445 | /* |
| 446 | * Test the read lock |
| 447 | */ |
| 448 | do_test(&tl, (short)F_WRLCK, (short)0, 0, 0); |
| 449 | compare_lock(&tl, (short)F_RDLCK, (short)0, 10, 3, parent_pid); |
| 450 | |
| 451 | /* |
| 452 | * Test the write lock |
| 453 | */ |
| 454 | do_test(&tl, (short)F_WRLCK, (short)0, 13, 0); |
| 455 | compare_lock(&tl, (short)F_WRLCK, (short)0, 13, 5, parent_pid); |
| 456 | |
| 457 | /* |
| 458 | * Test to make sure the rest of the file is unlocked |
| 459 | */ |
| 460 | do_test(&tl, (short)F_WRLCK, (short)0, 18, 0); |
| 461 | compare_lock(&tl, (short)F_UNLCK, (short)0, 18, 0, 0); |
| 462 | |
| 463 | /* |
| 464 | * remove all the locks set above |
| 465 | */ |
| 466 | unlock_file(); |
| 467 | |
| 468 | if (fail) { |
| 469 | tst_resm(TINFO, "Test block 8: FAILED"); |
| 470 | } else { |
| 471 | tst_resm(TINFO, "Test block 8: PASSED"); |
| 472 | } |
| 473 | tst_resm(TINFO, "Exit block 8"); |
| 474 | |
| 475 | block9: |
| 476 | tst_resm(TINFO, "Enter block 9"); |
| 477 | fail = 0; |
| 478 | |
| 479 | /* |
| 480 | * Set a read lock in the middle of the file and a write |
| 481 | * lock starting at the last byte of the read lock |
| 482 | */ |
| 483 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 10, 5) < 0) { |
| 484 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 485 | file, errno); |
| 486 | fail = 1; |
| 487 | } |
| 488 | |
| 489 | /* |
| 490 | * Set a write lock on the whole file. |
| 491 | */ |
| 492 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 14, 5) < 0) { |
| 493 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 494 | file, errno); |
| 495 | fail = 1; |
| 496 | } |
| 497 | |
| 498 | /* |
| 499 | * Test read lock |
| 500 | */ |
| 501 | do_test(&tl, (short)F_WRLCK, (short)0, 0, 0); |
| 502 | compare_lock(&tl, (short)F_RDLCK, (short)0, 10, 4, parent_pid); |
| 503 | |
| 504 | /* |
| 505 | * Test the write lock |
| 506 | */ |
| 507 | do_test(&tl, (short)F_WRLCK, (short)0, 14, 0); |
| 508 | compare_lock(&tl, (short)F_WRLCK, (short)0, 14, 5, parent_pid); |
| 509 | |
| 510 | /* |
| 511 | * Test to make sure the end of the file is unlocked |
| 512 | */ |
| 513 | do_test(&tl, (short)F_WRLCK, (short)0, 19, 0); |
| 514 | compare_lock(&tl, (short)F_UNLCK, (short)0, 19, 0, 0); |
| 515 | |
| 516 | /* |
| 517 | * remove all the locks set above |
| 518 | */ |
| 519 | unlock_file(); |
| 520 | |
| 521 | if (fail) { |
| 522 | tst_resm(TINFO, "Test block 9: FAILED"); |
| 523 | } else { |
| 524 | tst_resm(TINFO, "Test block 9: PASSED"); |
| 525 | } |
| 526 | tst_resm(TINFO, "Exit block 9"); |
| 527 | |
| 528 | block10: |
| 529 | tst_resm(TINFO, "Enter block 10"); |
| 530 | fail = 0; |
| 531 | |
| 532 | /* |
| 533 | * Set a read lock in the middle of the file and a write |
| 534 | * lock that starts just after the last byte of the |
| 535 | * read lock. |
| 536 | */ |
| 537 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 10, 5) < 0) { |
| 538 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 539 | file, errno); |
| 540 | fail = 1; |
| 541 | } |
| 542 | |
| 543 | /* |
| 544 | * Set a write lock on the whole file |
| 545 | */ |
| 546 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 15, 5) < 0) { |
| 547 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 548 | file, errno); |
| 549 | fail = 1; |
| 550 | } |
| 551 | |
| 552 | /* |
| 553 | * Test the read lock |
| 554 | */ |
| 555 | do_test(&tl, (short)F_WRLCK, (short)0, 0, 0); |
| 556 | compare_lock(&tl, (short)F_RDLCK, (short)0, 10, 5, parent_pid); |
| 557 | |
| 558 | /* |
| 559 | * Test the write lock |
| 560 | */ |
| 561 | do_test(&tl, (short)F_WRLCK, (short)0, 15, 0); |
| 562 | compare_lock(&tl, (short)F_WRLCK, (short)0, 15, 5, parent_pid); |
| 563 | |
| 564 | /* |
| 565 | * Test to make sure the rest of the file is unlocked |
| 566 | */ |
| 567 | do_test(&tl, (short)F_WRLCK, (short)0, 20, 0); |
| 568 | compare_lock(&tl, (short)F_UNLCK, (short)0, 20, 0, 0); |
| 569 | |
| 570 | /* |
| 571 | * remove all the locks set above |
| 572 | */ |
| 573 | unlock_file(); |
| 574 | |
| 575 | if (fail) { |
| 576 | tst_resm(TINFO, "Test block 10: FAILED"); |
| 577 | } else { |
| 578 | tst_resm(TINFO, "Test block 10: PASSED"); |
| 579 | } |
| 580 | tst_resm(TINFO, "Exit block 10"); |
| 581 | |
| 582 | block11: |
| 583 | tst_resm(TINFO, "Enter block 11"); |
| 584 | fail = 0; |
| 585 | |
| 586 | /* |
| 587 | * Set a read lock at the middle of the file and a write |
| 588 | * lock that starts past the end of the read lock. |
| 589 | */ |
| 590 | if (do_lock(F_SETLK, (short)F_RDLCK, (short)0, 10, 5) < 0) { |
| 591 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 592 | file, errno); |
| 593 | fail = 1; |
| 594 | } |
| 595 | |
| 596 | if (do_lock(F_SETLK, (short)F_WRLCK, (short)0, 16, 5) < 0) { |
| 597 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 598 | file, errno); |
| 599 | fail = 1; |
| 600 | } |
| 601 | |
| 602 | /* |
| 603 | * Test the read lock |
| 604 | */ |
| 605 | do_test(&tl, (short)F_WRLCK, (short)0, 0, 0); |
| 606 | compare_lock(&tl, (short)F_RDLCK, (short)0, 10, 5, parent_pid); |
| 607 | |
| 608 | /* |
| 609 | * Test that byte in between is unlocked |
| 610 | */ |
| 611 | do_test(&tl, (short)F_WRLCK, (short)0, 15, 1); |
| 612 | compare_lock(&tl, (short)F_UNLCK, (short)0, 15, 1, 0); |
| 613 | |
| 614 | /* |
| 615 | * Test the write lock |
| 616 | */ |
| 617 | do_test(&tl, (short)F_WRLCK, (short)0, 16, 0); |
| 618 | compare_lock(&tl, (short)F_WRLCK, (short)0, 16, 5, parent_pid); |
| 619 | |
| 620 | /* |
| 621 | * Test to make sure the rest of the file is unlocked |
| 622 | */ |
| 623 | do_test(&tl, (short)F_WRLCK, (short)0, 21, 0); |
| 624 | compare_lock(&tl, (short)F_UNLCK, (short)0, 21, 0, 0); |
| 625 | |
| 626 | /* |
| 627 | * remove all the locks set above |
| 628 | */ |
| 629 | unlock_file(); |
| 630 | |
| 631 | if (fail) { |
| 632 | tst_resm(TINFO, "Test block 11: FAILED"); |
| 633 | } else { |
| 634 | tst_resm(TINFO, "Test block 11: PASSED"); |
| 635 | } |
| 636 | tst_resm(TINFO, "Exit block 11"); |
| 637 | |
| 638 | stop_child(); |
| 639 | close(fd); |
| 640 | } |
| 641 | cleanup(); |
| 642 | } |
| 643 | |
| 644 | /* |
| 645 | * setup |
| 646 | * performs all ONE TIME setup for this test |
| 647 | */ |
| 648 | void |
| 649 | setup() |
| 650 | { |
| 651 | char *buf = STRING; |
| 652 | |
| 653 | /* capture signals */ |
| 654 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 655 | |
| 656 | umask(0); |
| 657 | |
| 658 | /* Pause if that option was specified */ |
| 659 | TEST_PAUSE; |
| 660 | |
| 661 | pipe(parent_pipe); |
| 662 | pipe(child_pipe); |
| 663 | parent_pid = getpid(); |
| 664 | file = tempnam(".", NULL); |
| 665 | |
| 666 | if ((fd = open(file, O_RDWR|O_CREAT, 0777)) < 0) { |
| 667 | tst_resm(TFAIL, "Couldn't open %s! errno = %d", file, errno); |
| 668 | fail = 1; |
| 669 | } |
| 670 | |
| 671 | if (write(fd, buf, STRINGSIZE) < 0) { |
| 672 | tst_resm(TFAIL, "Couldn't write %s! errno = %d", file, errno); |
| 673 | fail = 1; |
| 674 | } |
| 675 | |
plars | 9539183 | 2002-06-12 17:05:08 +0000 | [diff] [blame] | 676 | if ((signal(SIGCLD, catch_child)) == SIG_ERR) { |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 677 | tst_resm(TFAIL, "SIGCLD signal setup failed, errno: %d", |
| 678 | errno); |
| 679 | fail = 1; |
| 680 | } |
| 681 | } |
| 682 | |
| 683 | /* |
| 684 | * cleanup() |
| 685 | * performs all ONE TIME cleanup for this test at completion or |
| 686 | * premature exit |
| 687 | */ |
| 688 | void |
| 689 | cleanup() |
| 690 | { |
| 691 | /* |
| 692 | * print timing stats if that option was specified |
| 693 | * print errno log if that option was specified |
| 694 | */ |
| 695 | TEST_CLEANUP; |
| 696 | |
| 697 | unlink(file); |
| 698 | |
| 699 | /* exit with return code appropriate for results */ |
| 700 | tst_exit(); |
| 701 | } |
| 702 | |
| 703 | do_child() |
| 704 | { |
| 705 | struct flock fl; |
| 706 | |
| 707 | close(parent_pipe[1]); |
| 708 | close(child_pipe[0]); |
| 709 | while(1) { |
| 710 | child_get(&fl); |
| 711 | if (fcntl(fd, F_GETLK, &fl) < 0) { |
| 712 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", |
| 713 | file, errno); |
| 714 | fail = 1; |
| 715 | } |
| 716 | child_put(&fl); |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | do_lock(int cmd, short type, short whence, int start, int len) |
| 721 | { |
| 722 | struct flock fl; |
| 723 | |
| 724 | fl.l_type = type; |
| 725 | fl.l_whence = whence; |
| 726 | fl.l_start = start; |
| 727 | fl.l_len = len; |
| 728 | return(fcntl(fd, cmd, &fl)); |
| 729 | } |
| 730 | |
| 731 | void |
| 732 | do_test(struct flock *fl, short type, short whence, int start, int len) |
| 733 | { |
| 734 | fl->l_type = type; |
| 735 | fl->l_whence = whence; |
| 736 | fl->l_start = start; |
| 737 | fl->l_len = len; |
| 738 | fl->l_pid = (short)0; |
| 739 | |
| 740 | parent_put(fl); |
| 741 | parent_get(fl); |
| 742 | } |
| 743 | |
| 744 | void |
| 745 | compare_lock(struct flock *fl, short type, short whence, int start, int len, |
plars | a1e518d | 2002-09-09 18:23:52 +0000 | [diff] [blame^] | 746 | pid_t pid) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 747 | { |
| 748 | if (fl->l_type != type) { |
| 749 | tst_resm(TFAIL, "lock type is wrong should be %s is %s", |
| 750 | str_type(type), str_type(fl->l_type)); |
| 751 | fail = 1; |
| 752 | } |
| 753 | |
| 754 | if (fl->l_whence != whence) { |
| 755 | tst_resm(TFAIL, "lock whence is wrong should be %d is %d", |
| 756 | whence, fl->l_whence); |
| 757 | fail = 1; |
| 758 | } |
| 759 | |
| 760 | if (fl->l_start != start) { |
| 761 | tst_resm(TFAIL, "region starts in wrong place, should be" |
| 762 | "%d is %d", start, fl->l_start); |
| 763 | fail = 1; |
| 764 | } |
| 765 | |
| 766 | if (fl->l_len != len) { |
| 767 | tst_resm(TFAIL, "region length is wrong, should be %d is %d", |
| 768 | len, fl->l_len); |
| 769 | fail = 1; |
| 770 | } |
| 771 | |
| 772 | if (fl->l_pid != pid) { |
| 773 | tst_resm(TFAIL, "locking pid is wrong, should be %d is %d", |
| 774 | pid, fl->l_pid); |
| 775 | fail = 1; |
| 776 | } |
| 777 | } |
| 778 | |
| 779 | void |
| 780 | unlock_file() |
| 781 | { |
| 782 | struct flock fl; |
| 783 | |
| 784 | if (do_lock(F_SETLK, (short)F_UNLCK, (short)0, 0, 0) < 0) { |
| 785 | tst_resm(TFAIL, "fcntl on file %s failed, errno =%d", file, |
| 786 | errno); |
| 787 | fail = 1; |
| 788 | } |
| 789 | do_test(&fl, F_WRLCK, 0, 0, 0); |
plars | a1e518d | 2002-09-09 18:23:52 +0000 | [diff] [blame^] | 790 | compare_lock(&fl, (short)F_UNLCK, (short)0, 0, 0, (pid_t)0); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 791 | } |
| 792 | |
| 793 | char * |
| 794 | str_type(int type) |
| 795 | { |
| 796 | static char buf[20]; |
| 797 | |
| 798 | switch (type) { |
| 799 | case 1: |
| 800 | return("F_RDLCK"); |
| 801 | case 2: |
| 802 | return("F_WRLCK"); |
| 803 | case 3: |
| 804 | return("F_UNLCK"); |
| 805 | default: |
| 806 | sprintf(buf, "BAD VALUE: %d", type); |
| 807 | return(buf); |
| 808 | } |
| 809 | } |
| 810 | |
| 811 | void |
| 812 | parent_put(struct flock *l) |
| 813 | { |
| 814 | if (write(parent_pipe[1], l, sizeof(*l)) != sizeof(*l)) { |
| 815 | tst_resm(TFAIL, "couldn't send message to child"); |
| 816 | fail = 1; |
| 817 | } |
| 818 | } |
| 819 | |
| 820 | void |
| 821 | parent_get(struct flock *l) |
| 822 | { |
| 823 | if (read(child_pipe[0], l, sizeof(*l)) != sizeof(*l)) { |
| 824 | tst_resm(TFAIL, "couldn't get message from child"); |
| 825 | fail = 1; |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | void |
| 830 | child_put(struct flock *l) |
| 831 | { |
| 832 | if (write(child_pipe[1], l, sizeof(*l)) != sizeof(*l)) { |
| 833 | tst_resm(TFAIL, "couldn't send message to parent"); |
| 834 | fail = 1; |
| 835 | } |
| 836 | } |
| 837 | |
| 838 | void |
| 839 | child_get(struct flock *l) |
| 840 | { |
| 841 | if (read(parent_pipe[0], l, sizeof(*l)) != sizeof(*l)) { |
| 842 | tst_resm(TFAIL, "couldn't get message from parent"); |
| 843 | cleanup(); |
| 844 | } else if (l->l_type == (short)STOP) { |
| 845 | exit(0); |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | void |
| 850 | stop_child() |
| 851 | { |
| 852 | struct flock fl; |
| 853 | |
| 854 | (void) signal(SIGCLD, (void (*)())SIG_DFL); |
| 855 | fl.l_type = STOP; |
| 856 | parent_put(&fl); |
| 857 | wait(0); |
| 858 | } |
| 859 | |
| 860 | void |
| 861 | catch_child() |
| 862 | { |
| 863 | tst_resm(TFAIL, "Unexpected death of child process"); |
| 864 | cleanup(); |
| 865 | } |