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 | * Test Name: msync01 |
| 22 | * |
| 23 | * Test Description: |
| 24 | * Verify that, msync() succeeds, when the region to synchronize, is part |
| 25 | * of, or all of a mapped region. |
| 26 | * |
| 27 | * Expected Result: |
| 28 | * msync() should succeed with a return value of 0, and succesfully |
| 29 | * synchronize the memory region. Data read from mapped region should be |
| 30 | * the same as the initialized data. |
| 31 | * |
| 32 | * Algorithm: |
| 33 | * Setup: |
| 34 | * Setup signal handling. |
| 35 | * Create temporary directory. |
| 36 | * Pause for SIGUSR1 if option specified. |
| 37 | * |
| 38 | * Test: |
| 39 | * Loop if the proper options are given. |
| 40 | * Execute system call |
| 41 | * Check return code, if system call failed (return=-1) |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 42 | * Log the errno and Issue a FAIL message. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 43 | * Otherwise, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 44 | * Verify the Functionality of system call |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 45 | * if successful, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 46 | * Issue Functionality-Pass message. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 47 | * Otherwise, |
| 48 | * Issue Functionality-Fail message. |
| 49 | * Cleanup: |
| 50 | * Print errno log and/or timing stats if options given |
| 51 | * Delete the temporary directory created. |
| 52 | * |
| 53 | * Usage: <for command-line> |
| 54 | * msync01 [-c n] [-f] [-i n] [-I x] [-P x] [-t] |
| 55 | * where, -c n : Run n copies concurrently. |
| 56 | * -f : Turn off functionality Testing. |
| 57 | * -i n : Execute test n times. |
| 58 | * -I x : Execute test for x seconds. |
| 59 | * -P x : Pause for x seconds between iterations. |
| 60 | * -t : Turn on syscall timing. |
| 61 | * |
| 62 | * HISTORY |
| 63 | * 07/2001 Ported by Wayne Boyer |
| 64 | * |
| 65 | * RESTRICTIONS: |
| 66 | * None. |
| 67 | */ |
| 68 | #include <errno.h> |
| 69 | #include <unistd.h> |
| 70 | #include <fcntl.h> |
| 71 | #include <sys/mman.h> |
| 72 | |
| 73 | #include "test.h" |
| 74 | #include "usctest.h" |
| 75 | |
| 76 | #define TEMPFILE "msync_file" |
| 77 | #define BUF_SIZE 256 |
| 78 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 79 | char *TCID = "msync01"; /* Test program identifier. */ |
| 80 | int TST_TOTAL = 1; /* Total number of test cases. */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 81 | extern int Tst_count; /* Test Case counter for tst_* routines */ |
| 82 | |
| 83 | char *addr; /* addr of memory mapped region */ |
| 84 | size_t page_sz; /* system page size */ |
| 85 | int fildes; /* file descriptor for tempfile */ |
| 86 | char write_buf[BUF_SIZE]; /* buffer to hold data to be written */ |
| 87 | |
| 88 | void setup(); /* Main setup function of test */ |
| 89 | void cleanup(); /* cleanup function for the test */ |
| 90 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 91 | int main(int ac, char **av) |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 92 | { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 93 | int lc; /* loop counter */ |
| 94 | char *msg; /* message returned from parse_opts */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 95 | char read_buf[BUF_SIZE]; /* buffer to hold data read from file */ |
| 96 | int nread = 0, count, err_flg = 0; |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 97 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 98 | /* Parse standard options given to run the test. */ |
Garrett Cooper | 45e285d | 2010-11-22 12:19:25 -0800 | [diff] [blame] | 99 | msg = parse_opts(ac, av, NULL, NULL); |
| 100 | if (msg != NULL) { |
Garrett Cooper | 60fa801 | 2010-11-22 13:50:58 -0800 | [diff] [blame^] | 101 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | /* Check looping state if -i option given */ |
| 105 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 106 | |
| 107 | /* Reset Tst_count in case we are looping. */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 108 | Tst_count = 0; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 109 | |
| 110 | /* Perform global setup for test */ |
| 111 | setup(); |
| 112 | |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 113 | /* |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 114 | * Call msync to synchronize the mapped region |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 115 | * with the specified file. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 116 | */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 117 | TEST(msync(addr, page_sz, MS_ASYNC)); |
| 118 | |
| 119 | /* Check for the return value of msync() */ |
| 120 | if (TEST_RETURN == -1) { |
| 121 | tst_resm(TFAIL, "msync() failed to synchronize mapped " |
| 122 | "file %s, errno=%d : %s", |
| 123 | TEMPFILE, errno, strerror(errno)); |
| 124 | continue; |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * Perform functional verification if test |
| 129 | * executed without (-f) option. |
| 130 | */ |
| 131 | if (STD_FUNCTIONAL_TEST) { |
| 132 | /* |
| 133 | * Seek to the offset pos. where bytes were |
| 134 | * set in the setup. |
| 135 | */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 136 | if (lseek(fildes, (off_t) 100, SEEK_SET) != (off_t) 100) { |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 137 | tst_brkm(TBROK, cleanup, "lseek() to specified " |
| 138 | "offset pos. Failed, error=%d : %s", |
| 139 | errno, strerror(errno)); |
| 140 | tst_exit(); |
| 141 | } |
| 142 | |
| 143 | /* |
| 144 | * Seeking to specified offset. successful. |
| 145 | * Now, read the data (256 bytes) and compare |
| 146 | * them with the expected. |
| 147 | */ |
| 148 | nread = read(fildes, read_buf, sizeof(read_buf)); |
| 149 | if (nread != BUF_SIZE) { |
| 150 | tst_brkm(TBROK, cleanup, "read() on %s Failed, " |
| 151 | "error : %d", TEMPFILE, errno); |
| 152 | tst_exit(); |
| 153 | } else { |
| 154 | /* |
| 155 | * Check whether read data (from mapped |
| 156 | * file) contains the expected data |
| 157 | * which was initialised in the setup. |
| 158 | */ |
| 159 | for (count = 0; count < nread; count++) { |
| 160 | if (read_buf[count] != 1) { |
| 161 | /* invalid data */ |
| 162 | err_flg++; |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | if (err_flg != 0) { |
| 168 | tst_resm(TFAIL, |
| 169 | "data read from file doesn't match"); |
| 170 | } else { |
| 171 | tst_resm(TPASS, |
| 172 | "Functionality of msync() successful"); |
| 173 | } |
| 174 | } else { |
| 175 | tst_resm(TPASS, "call succeeded"); |
| 176 | } |
| 177 | |
| 178 | /* Call cleanup() to undo setup done for the test. */ |
| 179 | cleanup(); |
| 180 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 181 | } /* End for TEST_LOOPING */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 182 | |
| 183 | /* exit with return code appropriate for results */ |
| 184 | tst_exit(); |
| 185 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 186 | /*NOTREACHED*/ return 0; |
robbiew | 0983008 | 2003-03-26 23:18:32 +0000 | [diff] [blame] | 187 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 188 | } /* End main */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 189 | |
| 190 | /* |
| 191 | * setup() - performs all ONE TIME setup for this test. |
| 192 | * |
| 193 | * Get system page size, |
| 194 | * Creat a temporary directory and a file under it used for mapping. |
| 195 | * Write 1 page size char data into file. |
| 196 | * Initialize paged region (256 bytes) from the specified offset pos. |
| 197 | */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 198 | void setup() |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 199 | { |
| 200 | int c_total = 0, nwrite = 0; /* no. of bytes to be written */ |
| 201 | |
| 202 | /* capture signals */ |
| 203 | tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| 204 | |
| 205 | /* Pause if that option was specified */ |
| 206 | TEST_PAUSE; |
| 207 | |
| 208 | /* make a temp directory and cd to it */ |
| 209 | tst_tmpdir(); |
| 210 | |
| 211 | /* Get the system page size */ |
| 212 | if ((page_sz = getpagesize()) < 0) { |
| 213 | tst_brkm(TBROK, cleanup, |
| 214 | "getpagesize() fails to get system page size"); |
| 215 | tst_exit(); |
| 216 | } |
| 217 | |
| 218 | /* Creat a temporary file used for mapping */ |
| 219 | if ((fildes = open(TEMPFILE, O_RDWR | O_CREAT, 0666)) < 0) { |
| 220 | tst_brkm(TBROK, cleanup, "open() on %s failed, errno=%d : %s", |
| 221 | TEMPFILE, errno, strerror(errno)); |
| 222 | tst_exit(); |
| 223 | } |
| 224 | |
| 225 | /* Write one page size of char data into temporary file */ |
| 226 | while (c_total < page_sz) { |
| 227 | nwrite = write(fildes, write_buf, sizeof(write_buf)); |
| 228 | if (nwrite <= 0) { |
| 229 | tst_brkm(TBROK, cleanup, "write() on %s failed, errno " |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 230 | " = %d : %s", TEMPFILE, errno, |
| 231 | strerror(errno)); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 232 | tst_exit(); |
| 233 | } else { |
| 234 | c_total += nwrite; |
| 235 | } |
| 236 | } |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 237 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 238 | /* |
| 239 | * Call mmap to map virtual memory (mul. of page size bytes) from the |
| 240 | * beginning of temporary file (offset is 0) into memory. |
| 241 | */ |
| 242 | addr = mmap(0, page_sz, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, |
| 243 | fildes, 0); |
| 244 | |
| 245 | /* Check for the return value of mmap() */ |
| 246 | if (addr == (char *)MAP_FAILED) { |
| 247 | tst_brkm(TBROK, cleanup, "mmap() failed on %s, errno=%d : %s", |
| 248 | TEMPFILE, errno, strerror(errno)); |
| 249 | tst_exit(); |
| 250 | } |
| 251 | |
| 252 | /* Set 256 bytes, at 100 byte offset in the mapped region */ |
| 253 | memset(addr + 100, 1, 256); |
| 254 | } |
| 255 | |
| 256 | /* |
| 257 | * cleanup() - performs all ONE TIME cleanup for this test at |
| 258 | * completion or premature exit. |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 259 | * Unmap the mapped memory area done in the test. |
| 260 | * Close the temporary file. |
| 261 | * Remove the temporary directory created. |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 262 | */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 263 | void cleanup() |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 264 | { |
| 265 | /* |
| 266 | * print timing stats if that option was specified. |
| 267 | * print errno log if that option was specified. |
| 268 | */ |
| 269 | TEST_CLEANUP; |
| 270 | |
| 271 | /* Unmap the mapped memory */ |
| 272 | if (munmap(addr, page_sz) != 0) { |
| 273 | tst_brkm(TBROK, NULL, "munmap() failed to unmap the memory, " |
| 274 | "errno=%d", errno); |
| 275 | } |
| 276 | |
| 277 | /* Close the temporary file */ |
| 278 | if (close(fildes) < 0) { |
| 279 | tst_brkm(TBROK, NULL, "close() on %s failed, errno=%d : %s", |
| 280 | TEMPFILE, errno, strerror(errno)); |
| 281 | } |
| 282 | |
| 283 | /* Remove tmp dir and all files in it */ |
| 284 | tst_rmdir(); |
| 285 | } |