17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*d4188195Sraf * Common Development and Distribution License (the "License"). 6*d4188195Sraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 21*d4188195Sraf 227c478bd9Sstevel@tonic-gate /* 23*d4188195Sraf * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 287c478bd9Sstevel@tonic-gate 29*d4188195Sraf #include <sys/syscall.h> 307c478bd9Sstevel@tonic-gate #include <unistd.h> 317c478bd9Sstevel@tonic-gate #include <errno.h> 327c478bd9Sstevel@tonic-gate #include <sys/fcntl.h> 337c478bd9Sstevel@tonic-gate #include <sys/param.h> 347c478bd9Sstevel@tonic-gate 35*d4188195Sraf int 36*d4188195Sraf truncate(char *path, off_t length) 377c478bd9Sstevel@tonic-gate { 387c478bd9Sstevel@tonic-gate int fd, ret = 0; 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate if (strcmp(path, "/etc/mtab") == 0 || strcmp(path, "/etc/fstab") == 0) { 417c478bd9Sstevel@tonic-gate errno = ENOENT; 427c478bd9Sstevel@tonic-gate return (-1); 437c478bd9Sstevel@tonic-gate } 447c478bd9Sstevel@tonic-gate if ((fd = open(path, O_WRONLY)) == -1) { 457c478bd9Sstevel@tonic-gate return (-1); 467c478bd9Sstevel@tonic-gate } 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate if (ftruncate(fd, length) == -1) { 497c478bd9Sstevel@tonic-gate close(fd); 507c478bd9Sstevel@tonic-gate return (-1); 517c478bd9Sstevel@tonic-gate } 527c478bd9Sstevel@tonic-gate close(fd); 537c478bd9Sstevel@tonic-gate return (0); 547c478bd9Sstevel@tonic-gate } 55