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 |
| 22 | * writev03.c |
| 23 | * |
| 24 | * DESCRIPTION |
| 25 | * The testcases are written calling writev() with partially valid data |
| 26 | * to overwrite the contents, to write in the beginning and to write in |
| 27 | * the end of the file. |
| 28 | * |
| 29 | * USAGE: <for command-line> |
| 30 | * writev03 [-c n] [-e] [-i n] [-I x] [-P x] [-t] |
| 31 | * where, -c n : Run n copies concurrently. |
| 32 | * -e : Turn on errno logging. |
| 33 | * -i n : Execute test n times. |
| 34 | * -I x : Execute test for x seconds. |
| 35 | * -P x : Pause for x seconds between iterations. |
| 36 | * -t : Turn on syscall timing. |
| 37 | * |
| 38 | * History |
| 39 | * 07/2001 John George |
| 40 | * -Ported |
robbiew | 4644c7e | 2002-04-26 14:33:32 +0000 | [diff] [blame] | 41 | * 04/2002 wjhuie sigset cleanups |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 42 | * |
| 43 | * Restrictions |
| 44 | * NONE |
| 45 | */ |
| 46 | |
| 47 | #include <sys/types.h> |
| 48 | #include <signal.h> |
| 49 | #include <sys/uio.h> |
| 50 | #include <fcntl.h> |
| 51 | #include <memory.h> |
| 52 | #include <errno.h> |
| 53 | #include <test.h> |
| 54 | #include <usctest.h> |
| 55 | |
| 56 | #define K_1 1024 |
| 57 | |
| 58 | #define NBUFS 4 |
| 59 | #define CHUNK 64 /* single chunk */ |
| 60 | #define MAX_IOVEC 4 |
| 61 | #define DATA_FILE "writev_data_file" |
| 62 | |
| 63 | char buf1[K_1], buf2[K_1], buf3[K_1]; |
| 64 | |
| 65 | struct iovec wr_iovec[MAX_IOVEC] = { |
| 66 | /* testcase #1 */ |
| 67 | buf1 + (CHUNK * 6), CHUNK, |
| 68 | (caddr_t)-1, CHUNK, |
| 69 | buf1 + (CHUNK * 8), CHUNK, |
| 70 | (caddr_t)NULL, 0, |
| 71 | }; |
| 72 | |
| 73 | /* 0 terminated list of expected errnos */ |
| 74 | int exp_enos[] = {0}; |
| 75 | |
| 76 | char name[K_1], f_name[K_1]; |
| 77 | int fd[2], in_sighandler; |
| 78 | char *buf_list[NBUFS]; |
| 79 | |
| 80 | char *TCID = "writev03"; |
| 81 | int TST_TOTAL = 1; |
| 82 | extern int Tst_count; |
| 83 | |
| 84 | void sighandler(int); |
| 85 | long l_seek(int, long, int); |
| 86 | void setup(void); |
| 87 | void cleanup(void); |
| 88 | int fail; |
| 89 | |
| 90 | main(int argc, char **argv) |
| 91 | { |
| 92 | int lc; /* loop counter */ |
| 93 | char *msg; /* message returned from parse_opts */ |
| 94 | |
| 95 | int nbytes; |
| 96 | |
| 97 | /* parse standard options */ |
| 98 | if ((msg = parse_opts(argc, argv, (option_t *)NULL, NULL)) != |
| 99 | (char *) NULL) { |
| 100 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| 101 | tst_exit(); |
| 102 | /*NOTREACHED*/ |
| 103 | } |
| 104 | |
| 105 | /* set "tstdir", and "testfile" vars */ |
| 106 | setup(); |
| 107 | |
| 108 | /* The following loop checks looping state if -i option given */ |
| 109 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 110 | |
| 111 | /* reset Tst_count in case we are looping */ |
| 112 | Tst_count = 0; |
| 113 | |
| 114 | buf_list[0] = buf1; |
| 115 | buf_list[1] = buf2; |
| 116 | buf_list[2] = buf3; |
| 117 | buf_list[3] = (char *)NULL; |
| 118 | |
| 119 | fd[1] = -1; /* Invalid file descriptor */ |
| 120 | |
robbiew | 4644c7e | 2002-04-26 14:33:32 +0000 | [diff] [blame] | 121 | if (signal(SIGTERM, sighandler) == SIG_ERR) { |
| 122 | perror("signal"); |
| 123 | tst_resm(TFAIL, "signal() SIGTERM FAILED"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 124 | cleanup(); |
| 125 | /*NOTREACHED*/ |
| 126 | } |
| 127 | |
robbiew | 4644c7e | 2002-04-26 14:33:32 +0000 | [diff] [blame] | 128 | if (signal(SIGPIPE, sighandler) == SIG_ERR) { |
| 129 | perror("signal"); |
| 130 | tst_resm(TFAIL, "signal() SIGPIPE FAILED"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 131 | cleanup(); |
| 132 | /*NOTREACHED*/ |
| 133 | } |
| 134 | |
| 135 | memset(buf_list[0], 0, K_1); |
| 136 | memset(buf_list[1], 0, K_1); |
| 137 | |
| 138 | if ((fd[0] = open(f_name, O_WRONLY | O_CREAT, 0666)) < 0) { |
| 139 | tst_resm(TFAIL, "open(2) failed: fname = %s, " |
| 140 | "errno = %d", f_name, errno); |
| 141 | cleanup(); |
| 142 | /*NOTREACHED*/ |
| 143 | } else { |
| 144 | if ((nbytes = write(fd[0], buf_list[1], K_1)) != |
| 145 | K_1) { |
| 146 | tst_resm(TFAIL, "write(2) failed: nbytes " |
| 147 | "= %d, errno = %d", nbytes, errno); |
| 148 | cleanup(); |
| 149 | /*NOTREACHED*/ |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | if (close(fd[0]) < 0) { |
| 154 | tst_resm(TFAIL, "close failed: errno = %d", errno); |
| 155 | cleanup(); |
| 156 | /*NOTREACHED*/ |
| 157 | } |
| 158 | |
| 159 | if ((fd[0] = open(f_name, O_RDWR, 0666)) < 0) { |
| 160 | tst_resm(TFAIL, "open failed: fname = %s, errno = %d", |
| 161 | f_name, errno); |
| 162 | cleanup(); |
| 163 | /*NOTREACHED*/ |
| 164 | } |
| 165 | |
| 166 | block1: |
| 167 | tst_resm(TINFO, "Enter block 1"); |
| 168 | fail = 0; |
| 169 | |
| 170 | /* |
| 171 | * In this block we are trying to call writev() with |
| 172 | * partially valid data. This should return the valid number |
| 173 | * of bytes written in the vector. If it returns EFAULT, it |
| 174 | * is an error. And after returning the number of valid |
| 175 | * bytes written, the check should be made to verify the |
| 176 | * contents of the first valid write() scheduled. |
| 177 | */ |
| 178 | |
| 179 | if (writev(fd[0], wr_iovec, 3) < 0) { |
| 180 | TEST_ERROR_LOG(errno); |
| 181 | if (errno == EFAULT) { |
| 182 | tst_resm(TFAIL, "Got error EFAULT"); |
| 183 | fail = 1; |
| 184 | } |
| 185 | } else { |
| 186 | l_seek(fd[0], 0, 0); |
| 187 | read(fd[0], buf_list[0], CHUNK); |
| 188 | if (memcmp(buf_list[0], buf_list[1], CHUNK) != 0) { |
| 189 | tst_resm(TFAIL, "writev overwrote the file"); |
| 190 | fail = 1; |
| 191 | } |
| 192 | } |
| 193 | if (fail) { |
| 194 | tst_resm(TINFO, "block 1 FAILED"); |
| 195 | } else { |
| 196 | tst_resm(TINFO, "block 1 PASSED"); |
| 197 | } |
| 198 | tst_resm(TINFO, "Exit block 1"); |
| 199 | |
| 200 | block2: |
| 201 | tst_resm(TINFO, "Enter block 2"); |
| 202 | fail = 0; |
| 203 | |
| 204 | /* |
| 205 | * In this block we are trying to over write the contents by |
| 206 | * calling writev() with partially valid data. It should |
| 207 | * return the valid number of bytes written but not EFAULT. |
| 208 | * Also the check should be made whether the initial write() |
| 209 | * scheduled is done correctly or not. |
| 210 | */ |
| 211 | l_seek(fd[0], 0, 0); |
| 212 | if (writev(fd[0], wr_iovec, 3) < 0) { |
| 213 | TEST_ERROR_LOG(errno); |
| 214 | if (errno == EFAULT) { |
| 215 | tst_resm(TFAIL, "Got error EFAULT"); |
| 216 | fail = 1; |
| 217 | } |
| 218 | } else { |
| 219 | l_seek(fd[0], 0, 0); |
| 220 | read(fd[0], buf_list[0], CHUNK); |
| 221 | if (memcmp(buf_list[0], buf_list[1], CHUNK) != 0) { |
| 222 | tst_resm(TFAIL, "writev overwrote the file"); |
| 223 | fail = 1; |
| 224 | } |
| 225 | } |
| 226 | if (fail) { |
| 227 | tst_resm(TINFO, "block 2 FAILED"); |
| 228 | } else { |
| 229 | tst_resm(TINFO, "block 2 PASSED"); |
| 230 | } |
| 231 | tst_resm(TINFO, "Exit block 2"); |
| 232 | |
| 233 | block3: |
| 234 | tst_resm(TINFO, "Enter block 3"); |
| 235 | fail = 0; |
| 236 | |
| 237 | /* |
| 238 | * In this block, we are trying to call writev() by going to |
| 239 | * some end position of the file. Here writev() is called |
| 240 | * with partially valid data, and this will return the |
| 241 | * number of valid bytes written and not EFAULT. Also, the |
| 242 | * check should be made whether the inital write() that is |
| 243 | * scheduled with valid data is done correctly done or not. |
| 244 | */ |
| 245 | |
| 246 | l_seek(fd[0], 8192, 0); |
| 247 | if (writev(fd[0], wr_iovec, 3) < 0) { |
| 248 | TEST_ERROR_LOG(errno); |
| 249 | if (errno == EFAULT) { |
| 250 | tst_resm(TFAIL, "Got error EFAULT"); |
| 251 | fail = 1; |
| 252 | } |
| 253 | } else { |
| 254 | l_seek(fd[0], 0, 0); |
| 255 | read(fd[0], buf_list[0], CHUNK); |
| 256 | if (memcmp(buf_list[0], buf_list[1], CHUNK) != 0) { |
| 257 | tst_resm(TFAIL, "writev overwrote the file"); |
| 258 | fail = 1; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | if (fail) { |
| 263 | tst_resm(TINFO, "block 3 FAILED"); |
| 264 | } else { |
| 265 | tst_resm(TINFO, "block 3 PASSED"); |
| 266 | } |
| 267 | tst_resm(TINFO, "Exit block 3"); |
| 268 | } |
| 269 | cleanup(); |
| 270 | } |
| 271 | |
| 272 | /* |
| 273 | * setup() |
| 274 | * performs all ONE TIME setup for this test |
| 275 | */ |
| 276 | void |
| 277 | setup(void) |
| 278 | { |
| 279 | /* capture signals */ |
| 280 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 281 | |
| 282 | /* Set up the expected error numbers for -e option */ |
| 283 | TEST_EXP_ENOS(exp_enos); |
| 284 | |
| 285 | /* Pause if that option was specified. |
| 286 | * TEST_PAUSE contains the code to fork the test with the -i option. |
| 287 | * You want to make sure you do this before you create your temporary |
| 288 | * directory. |
| 289 | */ |
| 290 | TEST_PAUSE; |
| 291 | |
| 292 | strcpy(name, DATA_FILE); |
| 293 | sprintf(f_name, "%s.%d", name, getpid()); |
| 294 | |
| 295 | tst_tmpdir(); |
| 296 | } |
| 297 | |
| 298 | /* |
| 299 | * cleanup() |
| 300 | * performs all ONE TIME cleanup for this test at |
| 301 | * completion or premature exit |
| 302 | */ |
| 303 | void |
| 304 | cleanup(void) |
| 305 | { |
| 306 | /* |
| 307 | * print timing stats if that option was specified. |
| 308 | * print errno log if that option was specified. |
| 309 | */ |
| 310 | TEST_CLEANUP; |
| 311 | |
| 312 | if (unlink(f_name) < 0) { |
| 313 | tst_resm(TFAIL, "unlink Failed--file = %s, errno = %d", |
| 314 | f_name, errno); |
| 315 | } |
| 316 | tst_rmdir(); |
| 317 | |
| 318 | tst_exit(); |
| 319 | } |
| 320 | |
| 321 | /* |
| 322 | * sighandler() |
| 323 | * Signal handler function for SIGTERM and SIGPIPE |
| 324 | */ |
| 325 | void |
| 326 | sighandler(int sig) |
| 327 | { |
| 328 | switch(sig) { |
| 329 | case SIGTERM: break; |
| 330 | case SIGPIPE: ++in_sighandler; |
| 331 | return; |
| 332 | default: |
| 333 | tst_resm(TFAIL, "sighandler() received invalid signal " |
| 334 | ": %d", sig); |
| 335 | break; |
| 336 | } |
| 337 | |
| 338 | if ((unlink(f_name) < 0) && (errno != ENOENT)) { |
| 339 | tst_resm(TFAIL, "unlink Failed--file = %s, errno = %d", |
| 340 | f_name, errno); |
| 341 | cleanup(); |
| 342 | /*NOTREACHED*/ |
| 343 | } |
| 344 | exit(sig); |
| 345 | } |
| 346 | |
| 347 | /* |
| 348 | * l_seek() |
| 349 | * Wrap around for regular lseek function for giving error message |
| 350 | */ |
| 351 | long |
| 352 | l_seek(int fdesc, long offset, int whence) |
| 353 | { |
| 354 | if (lseek(fdesc, offset, whence) < 0) { |
| 355 | tst_resm(TFAIL, "lseek Failed : errno = %d", errno); |
| 356 | fail = 1; |
| 357 | } |
| 358 | return(0); |
| 359 | } |