17c478bdstevel@tonic-gate/*
27c478bdstevel@tonic-gate * CDDL HEADER START
37c478bdstevel@tonic-gate *
47c478bdstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bdstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bdstevel@tonic-gate * (the "License").  You may not use this file except in compliance
77c478bdstevel@tonic-gate * with the License.
87c478bdstevel@tonic-gate *
97c478bdstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bdstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bdstevel@tonic-gate * See the License for the specific language governing permissions
127c478bdstevel@tonic-gate * and limitations under the License.
137c478bdstevel@tonic-gate *
147c478bdstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bdstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bdstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bdstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bdstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bdstevel@tonic-gate *
207c478bdstevel@tonic-gate * CDDL HEADER END
217c478bdstevel@tonic-gate */
227c478bdstevel@tonic-gate/*
237c478bdstevel@tonic-gate * Copyright (c) 1995, by Sun Microsystems, Inc.
247c478bdstevel@tonic-gate * All rights reserved.
257c478bdstevel@tonic-gate */
267c478bdstevel@tonic-gate
277c478bdstevel@tonic-gate#pragma ident	"%Z%%M%	%I%	%E% SMI"
287c478bdstevel@tonic-gate
297c478bdstevel@tonic-gate#include <sys/param.h>
307c478bdstevel@tonic-gate#include <sys/stat.h>
317c478bdstevel@tonic-gate#include <dirent.h>
327c478bdstevel@tonic-gate#include <errno.h>
337c478bdstevel@tonic-gate#include <fcntl.h>
347c478bdstevel@tonic-gate
357c478bdstevel@tonic-gate/*
367c478bdstevel@tonic-gate * open a directory.
377c478bdstevel@tonic-gate */
387c478bdstevel@tonic-gateDIR *
397c478bdstevel@tonic-gateopendir(name)
407c478bdstevel@tonic-gate	char *name;
417c478bdstevel@tonic-gate{
427c478bdstevel@tonic-gate	register DIR *dirp;
437c478bdstevel@tonic-gate	register int fd;
447c478bdstevel@tonic-gate	struct stat sb;
457c478bdstevel@tonic-gate	extern int errno;
467c478bdstevel@tonic-gate	extern char *malloc();
477c478bdstevel@tonic-gate	extern int open(), close(), fstat();
487c478bdstevel@tonic-gate
497c478bdstevel@tonic-gate	if ((fd = open(name, O_RDONLY | O_NDELAY)) == -1)
507c478bdstevel@tonic-gate		return (NULL);
517c478bdstevel@tonic-gate	if (fstat(fd, &sb) == -1) {
527c478bdstevel@tonic-gate		(void) close(fd);
537c478bdstevel@tonic-gate		return (NULL);
547c478bdstevel@tonic-gate	}
557c478bdstevel@tonic-gate	if ((sb.st_mode & S_IFMT) != S_IFDIR) {
567c478bdstevel@tonic-gate		errno = ENOTDIR;
577c478bdstevel@tonic-gate		(void) close(fd);
587c478bdstevel@tonic-gate		return (NULL);
597c478bdstevel@tonic-gate	}
607c478bdstevel@tonic-gate	if (((dirp = (DIR *)malloc(sizeof(DIR))) == NULL) ||
617c478bdstevel@tonic-gate	    ((dirp->dd_buf = malloc(sb.st_blksize)) == NULL)) {
627c478bdstevel@tonic-gate		if (dirp)
637c478bdstevel@tonic-gate			free(dirp);
647c478bdstevel@tonic-gate		(void) close(fd);
657c478bdstevel@tonic-gate		return (NULL);
667c478bdstevel@tonic-gate	}
677c478bdstevel@tonic-gate	dirp->dd_fd = fd;
687c478bdstevel@tonic-gate	dirp->dd_loc = 0;
697c478bdstevel@tonic-gate	dirp->dd_size = 0;
707c478bdstevel@tonic-gate	dirp->dd_bsize = sb.st_blksize;
717c478bdstevel@tonic-gate	dirp->dd_off = 0;
727c478bdstevel@tonic-gate	(void) fcntl(fd, F_SETFD, FD_CLOEXEC);
737c478bdstevel@tonic-gate	return (dirp);
747c478bdstevel@tonic-gate}
75