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203 lines
5.3 KiB
203 lines
5.3 KiB
/*
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*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Test Name: msync01
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*
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* Test Description:
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* Verify that, msync() succeeds, when the region to synchronize, is part
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* of, or all of a mapped region.
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*
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* Expected Result:
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* msync() should succeed with a return value of 0, and succesfully
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* synchronize the memory region. Data read from mapped region should be
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* the same as the initialized data.
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*
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* Algorithm:
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* Setup:
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* Setup signal handling.
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* Create temporary directory.
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* Pause for SIGUSR1 if option specified.
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*
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* Test:
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* Loop if the proper options are given.
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* Execute system call
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* Check return code, if system call failed (return=-1)
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* Log the errno and Issue a FAIL message.
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* Otherwise,
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* Verify the Functionality of system call
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* if successful,
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* Issue Functionality-Pass message.
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* Otherwise,
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* Issue Functionality-Fail message.
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* Cleanup:
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* Print errno log and/or timing stats if options given
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* Delete the temporary directory created.
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*
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* Usage: <for command-line>
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* msync01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
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* where, -c n : Run n copies concurrently.
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* -f : Turn off functionality Testing.
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* -i n : Execute test n times.
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* -I x : Execute test for x seconds.
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* -P x : Pause for x seconds between iterations.
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* -t : Turn on syscall timing.
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*
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* HISTORY
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* 07/2001 Ported by Wayne Boyer
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*
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* RESTRICTIONS:
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* None.
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*/
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#include <errno.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include "test.h"
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#define TEMPFILE "msync_file"
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#define BUF_SIZE 256
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char *TCID = "msync01";
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int TST_TOTAL = 1;
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char *addr; /* addr of memory mapped region */
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size_t page_sz; /* system page size */
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int fildes; /* file descriptor for tempfile */
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char write_buf[BUF_SIZE]; /* buffer to hold data to be written */
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void setup(); /* Main setup function of test */
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void cleanup(); /* cleanup function for the test */
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int main(int ac, char **av)
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{
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int lc;
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char read_buf[BUF_SIZE]; /* buffer to hold data read from file */
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int nread = 0, count, err_flg = 0;
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tst_parse_opts(ac, av, NULL, NULL);
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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setup();
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TEST(msync(addr, page_sz, MS_ASYNC));
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if (TEST_RETURN == -1) {
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tst_resm(TFAIL | TERRNO, "msync failed");
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continue;
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}
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if (lseek(fildes, (off_t) 100, SEEK_SET) != 100)
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tst_brkm(TBROK | TERRNO, cleanup,
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"lseek failed");
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/*
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* Seeking to specified offset. successful.
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* Now, read the data (256 bytes) and compare
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* them with the expected.
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*/
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nread = read(fildes, read_buf, sizeof(read_buf));
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if (nread != BUF_SIZE)
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tst_brkm(TBROK, cleanup, "read failed");
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else {
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/*
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* Check whether read data (from mapped
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* file) contains the expected data
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* which was initialised in the setup.
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*/
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for (count = 0; count < nread; count++)
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if (read_buf[count] != 1)
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err_flg++;
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}
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if (err_flg != 0)
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tst_resm(TFAIL,
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"data read from file doesn't match");
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else
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tst_resm(TPASS,
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"Functionality of msync() successful");
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cleanup();
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}
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tst_exit();
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}
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/*
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* setup() - performs all ONE TIME setup for this test.
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*
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* Get system page size,
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* Creat a temporary directory and a file under it used for mapping.
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* Write 1 page size char data into file.
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* Initialize paged region (256 bytes) from the specified offset pos.
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*/
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void setup(void)
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{
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int c_total = 0, nwrite = 0; /* no. of bytes to be written */
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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if ((page_sz = getpagesize()) == -1)
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tst_brkm(TBROK | TERRNO, NULL, "getpagesize failed");
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tst_tmpdir();
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if ((fildes = open(TEMPFILE, O_RDWR | O_CREAT, 0666)) < 0)
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tst_brkm(TBROK | TERRNO, cleanup, "open failed");
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while (c_total < page_sz) {
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nwrite = write(fildes, write_buf, sizeof(write_buf));
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if (nwrite <= 0)
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tst_brkm(TBROK | TERRNO, cleanup, "write failed");
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else
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c_total += nwrite;
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}
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/*
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* Call mmap to map virtual memory (mul. of page size bytes) from the
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* beginning of temporary file (offset is 0) into memory.
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*/
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addr = mmap(0, page_sz, PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED,
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fildes, 0);
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/* Check for the return value of mmap() */
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if (addr == MAP_FAILED)
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tst_brkm(TBROK | TERRNO, cleanup, "mmap failed");
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/* Set 256 bytes, at 100 byte offset in the mapped region */
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memset(addr + 100, 1, 256);
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}
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void cleanup(void)
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{
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if (munmap(addr, page_sz) == -1)
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tst_resm(TBROK | TERRNO, "munmap failed");
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if (close(fildes) == -1)
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tst_resm(TWARN | TERRNO, "close failed");
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tst_rmdir();
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}
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