| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2002 |
| * |
| * 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 |
| */ |
| |
| |
| /* |
| * NAME |
| * diotest2.c |
| * |
| * DESCRIPTION |
| * Program tests the combinations of direct and buffered read, write. |
| * The bufsize should be in n*4k size for direct read, write. The offset |
| * value marks the starting position in file from where to start the |
| * read and write. Larger files can be created using the offset parameter. |
| * Test data file can be specified through commandline and is useful |
| * for running test with raw devices as a file. |
| * Test blocks: |
| * [1] Direct read, Buffered write |
| * [2] Direct write, Buffered read |
| * [3] Direct read, Direct write |
| * |
| * USAGE |
| * diotest2 [-b bufsize] [-o offset] [-i iterations] [-f filename] |
| * |
| * History |
| * 04/22/2002 Narasimha Sharoff nsharoff@us.ibm.com |
| * |
| * RESTRICTIONS |
| * None |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include <sys/file.h> |
| #include <sys/types.h> |
| #include <sys/syscall.h> |
| #include <errno.h> |
| |
| #include "diotest_routines.h" |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| char *TCID="diotest02"; /* Test program identifier. */ |
| int TST_TOTAL=3; /* Total number of test conditions */ |
| |
| #ifdef O_DIRECT |
| |
| #define BUFSIZE 4096 |
| #define TRUE 1 |
| #define LEN 30 |
| #define READ_DIRECT 1 |
| #define WRITE_DIRECT 2 |
| #define RDWR_DIRECT 3 |
| |
| /* |
| * runtest: write the data to the file. Read the data from the file and compare. |
| * For each iteration, write data starting at offse+iter*bufsize |
| * location in the file and read from there. |
| */ |
| int |
| runtest(int fd_r, int fd_w, int iter, off64_t offset, int action) |
| { |
| char *buf1; |
| char *buf2; |
| int i, bufsize = BUFSIZE; |
| |
| /* Allocate for buffers */ |
| if ((buf1 = valloc(bufsize)) == 0) { |
| tst_resm(TFAIL, "valloc() buf1 failed: %s", strerror(errno)); |
| return(-1); |
| } |
| if ((buf2 = valloc(bufsize)) == 0) { |
| tst_resm(TFAIL, "valloc() buf2 failed: %s", strerror(errno)); |
| return(-1); |
| } |
| |
| /* seek bufsize*iteration and write. seek and read. verify. */ |
| for (i = 0; i < iter; i++) { |
| fillbuf(buf1, bufsize, i); |
| if (lseek(fd_w, offset+iter*bufsize, SEEK_SET) < 0) { |
| tst_resm(TFAIL, "lseek before write failed: %s", |
| strerror(errno)); |
| return(-1); |
| } |
| if (write(fd_w, buf1, bufsize) < bufsize) { |
| tst_resm(TFAIL, "write failed: %s", strerror(errno)); |
| return(-1); |
| } |
| if (lseek(fd_r, offset+iter*bufsize, SEEK_SET) < 0) { |
| tst_resm(TFAIL, "lseek before read failed: %s", |
| strerror(errno)); |
| return(-1); |
| } |
| if (read(fd_r, buf2, bufsize) < bufsize) { |
| tst_resm(TFAIL, "read failed: %s", strerror(errno)); |
| return(-1); |
| } |
| if (bufcmp(buf1, buf2, bufsize) != 0) { |
| tst_resm(TFAIL, "read/write comparision failed"); |
| return(-1); |
| } |
| } |
| return 0; |
| } |
| |
| /* |
| * prg_usage: display the program usage. |
| */ |
| void |
| prg_usage() |
| { |
| fprintf(stderr, "Usage: diotest2 [-b bufsize] [-o offset] [-i iterations] [-f filename]\n"); |
| tst_resm (TBROK, "usage"); |
| tst_exit(); |
| } |
| |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| int iter = 100; /* Iterations. Default 100 */ |
| int bufsize = BUFSIZE; /* Buffer size. Default 4k */ |
| off64_t offset = 0; /* Offset. Default 0 */ |
| int i, action, fd_r, fd_w, fd1; |
| int fail_count = 0, total = 0, failed = 0; |
| char filename[LEN]; |
| |
| /* Options */ |
| sprintf(filename,"testdata-2.%ld", syscall(__NR_gettid)); |
| while ((i = getopt(argc, argv, "b:o:i:f:")) != -1) { |
| switch(i) { |
| case 'b': |
| if ((bufsize = atoi(optarg)) <= 0) { |
| fprintf(stderr, "bufsize must be > 0\n"); |
| prg_usage(); |
| } |
| if (bufsize % 4096 != 0) { |
| fprintf(stderr, "bufsize must be multiple of 4k\n"); |
| prg_usage(); |
| } |
| break; |
| case 'o': |
| if ((offset = atoi(optarg)) <= 0) { |
| fprintf(stderr, "offset must be > 0\n"); |
| prg_usage(); |
| } |
| break; |
| case 'i': |
| if ((iter = atoi(optarg)) <= 0) { |
| fprintf(stderr, "iterations must be > 0\n"); |
| prg_usage(); |
| } |
| break; |
| case 'f': |
| strcpy(filename, optarg); |
| break; |
| default: |
| prg_usage(); |
| } |
| } |
| |
| /* Test for filesystem support of O_DIRECT */ |
| if ((fd1 = open(filename, O_DIRECT|O_CREAT, 0666)) < 0) { |
| tst_resm(TCONF,"O_DIRECT is not supported by this filesystem."); |
| tst_exit(); |
| }else{ |
| close(fd1); |
| } |
| |
| /* Testblock-1: Read with Direct IO, Write without */ |
| action = READ_DIRECT; |
| if ((fd_w = open(filename, O_WRONLY|O_CREAT, 0666)) < 0) { |
| tst_resm(TFAIL, "fd_w,open failed for %s: %s", |
| filename, strerror(errno)); |
| tst_exit (); |
| } |
| if ((fd_r = open(filename, O_DIRECT|O_RDONLY, 0666)) < 0) { |
| tst_resm(TFAIL, "fd_r,open failed for %s: %s", |
| filename, strerror(errno)); |
| close(fd_w); |
| unlink (filename); |
| tst_exit(); |
| } |
| if (runtest(fd_r, fd_w, iter, offset, action) < 0) { |
| failed = TRUE; |
| fail_count++; |
| tst_resm (TFAIL, "Read with Direct IO, Write without"); |
| } |
| else |
| tst_resm (TPASS, "Read with Direct IO, Write without"); |
| close(fd_w); |
| close(fd_r); |
| unlink(filename); |
| total++; |
| |
| |
| |
| /* Testblock-2: Write with Direct IO, Read without */ |
| action = WRITE_DIRECT; |
| if ((fd_w = open(filename, O_DIRECT|O_WRONLY|O_CREAT, 0666)) < 0) { |
| tst_resm(TFAIL, "fd_w,open failed for %s: %s", |
| filename, strerror(errno)); |
| tst_exit(); |
| } |
| if ((fd_r = open(filename, O_RDONLY|O_CREAT, 0666)) < 0) { |
| tst_resm(TFAIL, "fd_r,open failed for %s: %s", |
| filename, strerror(errno)); |
| close(fd_w); |
| unlink (filename); |
| tst_exit(); |
| } |
| if (runtest(fd_r, fd_w, iter, offset, action) < 0) { |
| failed = TRUE; |
| fail_count++; |
| tst_resm (TFAIL, "Write with Direct IO, Read without"); |
| } |
| else |
| tst_resm (TPASS, "Write with Direct IO, Read without"); |
| close(fd_w); |
| close(fd_r); |
| unlink(filename); |
| total++; |
| |
| /* Testblock-3: Read, Write with Direct IO. */ |
| action = RDWR_DIRECT; |
| if ((fd_w = open(filename, O_DIRECT|O_WRONLY|O_CREAT, 0666)) < 0) { |
| tst_resm(TFAIL, "fd_w,open failed for %s: %s", |
| filename, strerror(errno)); |
| tst_exit(); |
| } |
| if ((fd_r = open(filename, O_DIRECT|O_RDONLY|O_CREAT, 0666)) < 0) { |
| tst_resm(TFAIL, "fd_r,open failed for %s: %s", |
| filename, strerror(errno)); |
| close (fd_w); |
| unlink (filename); |
| tst_exit(); |
| } |
| if (runtest(fd_r, fd_w, iter, offset, action) < 0) { |
| failed = TRUE; |
| fail_count++; |
| tst_resm (TFAIL, "Read, Write with Direct IO"); |
| } |
| else |
| tst_resm (TPASS, "Read, Write with Direct IO"); |
| close(fd_w); |
| close(fd_r); |
| unlink(filename); |
| total++; |
| |
| if (failed) { |
| tst_resm(TINFO, "%d/%d testblocks failed", |
| fail_count, total); |
| } else { |
| tst_resm(TINFO, "%d testblocks %d iterations completed", |
| total, iter); |
| } |
| tst_exit (); |
| return 0; |
| } |
| |
| #else /* O_DIRECT */ |
| |
| int |
| main() { |
| |
| tst_resm(TCONF,"O_DIRECT is not defined."); |
| return 0; |
| } |
| #endif /* O_DIRECT */ |