| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /* |
| * Test Name: msync02 |
| * |
| * Test Description: |
| * Verify that msync() succeeds when the region to synchronize is mapped |
| * shared and the flags argument is MS_INVALIDATE. |
| * |
| * Expected Result: |
| * msync() should succeed with a return value of 0, and successfully |
| * synchronize the memory region. |
| * |
| * Algorithm: |
| * Setup: |
| * Setup signal handling. |
| * Create temporary directory. |
| * Pause for SIGUSR1 if option specified. |
| * |
| * Test: |
| * Loop if the proper options are given. |
| * Execute system call |
| * Check return code, if system call failed (return=-1) |
| * Log the errno and Issue a FAIL message. |
| * Otherwise, |
| * Verify the Functionality of system call |
| * if successful, |
| * Issue Functionality-Pass message. |
| * Otherwise, |
| * Issue Functionality-Fail message. |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * Delete the temporary directory created. |
| * |
| * Usage: <for command-line> |
| * msync02 [-c n] [-f] [-i n] [-I x] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -f : Turn off functionality Testing. |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| * HISTORY |
| * 07/2001 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS: |
| * None. |
| */ |
| #include <errno.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <sys/mman.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #define TEMPFILE "msync_file" |
| #define BUF_SIZE 256 |
| |
| char *TCID = "msync02"; /* Test program identifier. */ |
| int TST_TOTAL = 1; /* Total number of test cases. */ |
| |
| char *addr; /* addr of memory mapped region */ |
| size_t page_sz; /* system page size */ |
| int fildes; /* file descriptor for tempfile */ |
| char write_buf[10] = "Testing"; /* buffer to hold data to be written */ |
| |
| void setup(); /* Main setup function of test */ |
| void cleanup(); /* cleanup function for the test */ |
| |
| int main(int ac, char **av) |
| { |
| |
| setup(); |
| |
| Tst_count = 0; |
| |
| TEST(msync(addr, page_sz, MS_INVALIDATE)); |
| |
| if (TEST_RETURN == -1) |
| tst_resm(TFAIL|TTERRNO, "msync failed"); |
| else if (memcmp(addr+100, write_buf, strlen(write_buf)) != 0) |
| tst_resm(TFAIL, |
| "memory region contains invalid data"); |
| else |
| tst_resm(TPASS, |
| "Functionality of msync successful"); |
| |
| cleanup(); |
| |
| tst_exit(); |
| } |
| |
| void setup() |
| { |
| int c_total = 0, nwrite = 0; /* no. of bytes to be written */ |
| char tst_buf[BUF_SIZE]; |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| if ((page_sz = getpagesize()) == -1) |
| tst_brkm(TBROK|TERRNO, NULL, "getpagesize failed"); |
| |
| tst_tmpdir(); |
| |
| if ((fildes = open(TEMPFILE, O_RDWR|O_CREAT, 0666)) < 0) |
| tst_brkm(TBROK|TERRNO, cleanup, "open failed"); |
| |
| /* Write one page size of char data into temporary file */ |
| while (c_total < page_sz) { |
| if ((nwrite = write(fildes, tst_buf, sizeof(tst_buf))) <= 0) |
| tst_brkm(TBROK|TERRNO, cleanup, "write failed"); |
| else |
| c_total += nwrite; |
| } |
| |
| addr = mmap(0, page_sz, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, |
| fildes, 0); |
| |
| if (addr == MAP_FAILED) |
| tst_brkm(TBROK|TERRNO, cleanup, "mmap failed"); |
| |
| /* Again, Seek to the specified byte offset (100) position */ |
| if (lseek(fildes, 100, SEEK_SET) != 100) |
| tst_brkm(TBROK|TERRNO, cleanup, "lseek failed"); |
| |
| /* Write the string in write_buf at the 100 byte offset */ |
| if (write(fildes, write_buf, strlen(write_buf)) != strlen(write_buf)) |
| tst_brkm(TBROK|TERRNO, cleanup, "write failed"); |
| } |
| |
| void cleanup() |
| { |
| TEST_CLEANUP; |
| |
| if (munmap(addr, page_sz) == -1) |
| tst_resm(TBROK|TERRNO, "munmap failed"); |
| |
| /* Close the temporary file */ |
| if (close(fildes) == -1) |
| tst_resm(TWARN|TERRNO, "close failed"); |
| |
| tst_rmdir(); |
| } |