4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
50 #define BUFFERSIZE 4096
52 /* This flag controls termination of the main loop. */
53 volatile sig_atomic_t keep_going = 1;
55 /* The signal handler just clears the flag and re-enables itself. */
56 void catch_alarm(int sig)
59 signal(sig, catch_alarm);
62 int main(int argc, char **argv)
65 unsigned char buf[BUFFERSIZE];
67 unsigned int test_time;
68 mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH;
71 printf("Invalid number of arguments.\n");
72 printf("Usage %s <file> <test_time_in_seconds>\n", argv[0]);
77 test_time = atoi(argv[2]);
79 /* Establish a handler for SIGALRM signals. */
80 signal(SIGALRM, catch_alarm);
82 /* Set an alarm to go off in a little while. */
85 fd = open(file, O_RDWR|O_TRUNC|O_CREAT|O_SYNC|O_LARGEFILE, mode);
87 fprintf(stderr, "Error: Cannot open file named ");
92 memset(buf, 1, BUFFERSIZE);
94 for (i = 0; i < 1024; i++) {
95 rc = write(fd, buf, BUFFERSIZE);
97 fprintf(stderr, "Error: Write error ");
100 } else if (rc != BUFFERSIZE) {
101 fprintf(stderr, "Error: Ddidn't write all data \n");
105 if (ftruncate(fd, 0) < 0) {
106 fprintf(stderr, "Error: Truncate error ");
113 fprintf(stderr, "Error: Cannot close ");