10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*3224Sraf * Common Development and Distribution License (the "License").
6*3224Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*3224Sraf
220Sstevel@tonic-gate /*
23*3224Sraf * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
280Sstevel@tonic-gate
290Sstevel@tonic-gate #include "chkpath.h"
30*3224Sraf #include <sys/syscall.h>
310Sstevel@tonic-gate #include <unistd.h>
320Sstevel@tonic-gate #include <errno.h>
330Sstevel@tonic-gate #include <sys/fcntl.h>
340Sstevel@tonic-gate #include <sys/param.h>
350Sstevel@tonic-gate
36*3224Sraf int
truncate(char * path,off_t length)37*3224Sraf truncate(char *path, off_t length)
380Sstevel@tonic-gate {
39*3224Sraf int fd, ret = 0;
400Sstevel@tonic-gate
410Sstevel@tonic-gate CHKNULL(path);
420Sstevel@tonic-gate
430Sstevel@tonic-gate if (strcmp(path, "/etc/mtab") == 0 || strcmp(path, "/etc/fstab") == 0) {
440Sstevel@tonic-gate errno = ENOENT;
45*3224Sraf return (-1);
460Sstevel@tonic-gate }
470Sstevel@tonic-gate if ((fd = open(path, O_WRONLY)) == -1) {
48*3224Sraf return (-1);
490Sstevel@tonic-gate }
50*3224Sraf
510Sstevel@tonic-gate if (ftruncate(fd, length) == -1) {
520Sstevel@tonic-gate close(fd);
53*3224Sraf return (-1);
540Sstevel@tonic-gate }
550Sstevel@tonic-gate close(fd);
56*3224Sraf return (0);
570Sstevel@tonic-gate }
58