1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
52 #define BUFFERSIZE 4096
54 /* This flag controls termination of the main loop. */
55 volatile sig_atomic_t keep_going = 1;
57 /* The signal handler just clears the flag and re-enables itself. */
58 void catch_alarm(int sig)
61 signal(sig, catch_alarm);
64 int main(int argc, char **argv)
67 unsigned char buf[BUFFERSIZE];
69 unsigned int test_time;
70 mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH;
73 printf("Invalid number of arguments.\n");
74 printf("Usage %s <file> <test_time_in_seconds>\n", argv[0]);
79 test_time = atoi(argv[2]);
81 /* Establish a handler for SIGALRM signals. */
82 signal(SIGALRM, catch_alarm);
84 /* Set an alarm to go off in a little while. */
87 fd = open(file, O_RDWR|O_TRUNC|O_CREAT|O_SYNC|O_LARGEFILE, mode);
89 fprintf(stderr, "Error: Cannot open file named ");
94 memset(buf, 1, BUFFERSIZE);
96 for (i = 0; i < 1024; i++) {
97 rc = write(fd, buf, BUFFERSIZE);
99 fprintf(stderr, "Error: Write error ");
102 } else if (rc != BUFFERSIZE) {
103 fprintf(stderr, "Error: Ddidn't write all data \n");
107 if (ftruncate(fd, 0) < 0) {
108 fprintf(stderr, "Error: Truncate error ");
115 fprintf(stderr, "Error: Cannot close ");