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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 /* 21 * Test Name: msync02 22 * 23 * Test Description: 24 * Verify that msync() succeeds when the region to synchronize is mapped 25 * shared and the flags argument is MS_INVALIDATE. 26 * 27 * Expected Result: 28 * msync() should succeed with a return value of 0, and successfully 29 * synchronize the memory region. 30 * 31 * Algorithm: 32 * Setup: 33 * Setup signal handling. 34 * Create temporary directory. 35 * Pause for SIGUSR1 if option specified. 36 * 37 * Test: 38 * Loop if the proper options are given. 39 * Execute system call 40 * Check return code, if system call failed (return=-1) 41 * Log the errno and Issue a FAIL message. 42 * Otherwise, 43 * Verify the Functionality of system call 44 * if successful, 45 * Issue Functionality-Pass message. 46 * Otherwise, 47 * Issue Functionality-Fail message. 48 * Cleanup: 49 * Print errno log and/or timing stats if options given 50 * Delete the temporary directory created. 51 * 52 * Usage: <for command-line> 53 * msync02 [-c n] [-f] [-i n] [-I x] [-P x] [-t] 54 * where, -c n : Run n copies concurrently. 55 * -f : Turn off functionality Testing. 56 * -i n : Execute test n times. 57 * -I x : Execute test for x seconds. 58 * -P x : Pause for x seconds between iterations. 59 * -t : Turn on syscall timing. 60 * 61 * HISTORY 62 * 07/2001 Ported by Wayne Boyer 63 * 64 * RESTRICTIONS: 65 * None. 66 */ 67 #include <errno.h> 68 #include <unistd.h> 69 #include <fcntl.h> 70 #include <sys/mman.h> 71 72 #include "test.h" 73 74 #define TEMPFILE "msync_file" 75 #define BUF_SIZE 256 76 77 char *TCID = "msync02"; 78 int TST_TOTAL = 1; 79 80 char *addr; /* addr of memory mapped region */ 81 size_t page_sz; /* system page size */ 82 int fildes; /* file descriptor for tempfile */ 83 char write_buf[10] = "Testing"; /* buffer to hold data to be written */ 84 85 void setup(); /* Main setup function of test */ 86 void cleanup(); /* cleanup function for the test */ 87 88 int main(int ac, char **av) 89 { 90 91 setup(); 92 93 tst_count = 0; 94 95 TEST(msync(addr, page_sz, MS_INVALIDATE)); 96 97 if (TEST_RETURN == -1) 98 tst_resm(TFAIL | TTERRNO, "msync failed"); 99 else if (memcmp(addr + 100, write_buf, strlen(write_buf)) != 0) 100 tst_resm(TFAIL, "memory region contains invalid data"); 101 else 102 tst_resm(TPASS, "Functionality of msync successful"); 103 104 cleanup(); 105 106 tst_exit(); 107 } 108 109 void setup(void) 110 { 111 int c_total = 0, nwrite = 0; /* no. of bytes to be written */ 112 char tst_buf[BUF_SIZE]; 113 114 tst_sig(NOFORK, DEF_HANDLER, cleanup); 115 116 TEST_PAUSE; 117 118 if ((page_sz = getpagesize()) == -1) 119 tst_brkm(TBROK | TERRNO, NULL, "getpagesize failed"); 120 121 tst_tmpdir(); 122 123 if ((fildes = open(TEMPFILE, O_RDWR | O_CREAT, 0666)) < 0) 124 tst_brkm(TBROK | TERRNO, cleanup, "open failed"); 125 126 /* Write one page size of char data into temporary file */ 127 while (c_total < page_sz) { 128 if ((nwrite = write(fildes, tst_buf, sizeof(tst_buf))) <= 0) 129 tst_brkm(TBROK | TERRNO, cleanup, "write failed"); 130 else 131 c_total += nwrite; 132 } 133 134 addr = mmap(0, page_sz, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, 135 fildes, 0); 136 137 if (addr == MAP_FAILED) 138 tst_brkm(TBROK | TERRNO, cleanup, "mmap failed"); 139 140 /* Again, Seek to the specified byte offset (100) position */ 141 if (lseek(fildes, 100, SEEK_SET) != 100) 142 tst_brkm(TBROK | TERRNO, cleanup, "lseek failed"); 143 144 /* Write the string in write_buf at the 100 byte offset */ 145 if (write(fildes, write_buf, strlen(write_buf)) != strlen(write_buf)) 146 tst_brkm(TBROK | TERRNO, cleanup, "write failed"); 147 } 148 149 void cleanup(void) 150 { 151 if (munmap(addr, page_sz) == -1) 152 tst_resm(TBROK | TERRNO, "munmap failed"); 153 154 /* Close the temporary file */ 155 if (close(fildes) == -1) 156 tst_resm(TWARN | TERRNO, "close failed"); 157 158 tst_rmdir(); 159 } 160