2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
37 #include <sys/types.h>
51 fprintf(stderr,"Usage: %s filename\n", prog);
75 /* Create the file and make it a regular file. */
77 if ((fd = open(pathname, O_RDWR|O_CREAT|O_EXCL, 0600)) < 0) {
78 fprintf(stderr,"%s: Cannot open %s, %s\n", prog,
79 pathname, strerror(errno));
83 /* Malloc and zero a buffer to use for writes. */
86 if ((buf = malloc(buflen)) == NULL) {
87 fprintf(stderr,"%s: malloc(%d) returned NULL\n",
91 memset(buf, '\0', buflen);
93 for (i = 0; i < 200; i += 2) {
95 if (lseek(fd, offset, SEEK_SET) < 0) {
96 fprintf(stderr, "seek to %d failed, %s\n", offset,
100 if ((count = write(fd, buf, buflen)) < 0) {
101 fprintf(stderr, "write of %d bytes failed at offset "
102 "%d, , %s\n", buflen, offset, strerror(errno));
105 if (count != buflen) {
106 fprintf(stderr, "expected to write %d bytes at offset "
107 "%d, actually wrote %d\n", buflen, offset,