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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
27 * This file is part of Lustre, http://www.lustre.org/
38 #include <sys/types.h>
43 #define BUFSIZE (1024 * 1024)
46 * Function: pwrite character '+' to <filename> at <offset> (man pwrite)
50 int main(int argc, char**argv)
60 fprintf(stderr, "Usage: %s <filename> <offset>(KB)\n", argv[0]);
65 offset = strtoul(argv[2], &end, 10);
67 fprintf(stderr, "<offset> parameter should be integer\n");
71 fd = open(filename, O_CREAT|O_RDWR, 0644);
73 fprintf(stderr, "Opening %s fails (%s)\n",
74 filename, strerror(errno));
78 /* write the character '+' at offset */
79 p_size = pwrite(fd, buf, 1, offset);
81 fprintf(stderr, "pwrite %s fails (%s)\n",
82 filename, strerror(errno));