OpenSolaris_b135/cmd/bnu/gwd.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
/*	  All Rights Reserved  	*/


#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include "uucp.h"

/*
 *	gwd - get working directory
 *	Uid and Euid are global
 *	return
 *		0 - ok
 *	 	FAIL - failed
 */

int
gwd(wkdir)
char *wkdir;
{
	FILE *fp;
	char cmd[BUFSIZ];

	*wkdir = '\0';
	(void) sprintf(cmd, "%s pwd 2>&-", PATH);

#ifndef V7
	(void) setuid(Uid);
	fp = popen(cmd, "r");
	(void) setuid(Euid);
#else
	fp = popen(cmd, "r");
#endif

	if (fp == NULL)
		return(FAIL);

	if (fgets(wkdir, MAXFULLNAME, fp) == NULL) {
		(void) pclose(fp);
		return(FAIL);
	}
	if (wkdir[strlen(wkdir)-1] == '\n')
		wkdir[strlen(wkdir)-1] = '\0';
	(void) pclose(fp);
	return(0);
}


/*
 * uidstat(file, &statbuf)
 * This is a stat call with the uid set from Euid to Uid.
 * Used from uucp.c and uux.c to permit file copies
 * from directories that may not be searchable by other.
 * return:
 *	same as stat()
 */

int
uidstat(file, buf)
char *file;
struct stat *buf;
{
#ifndef V7
	int ret;

	(void) setuid(Uid);
	ret = stat(file, buf);
	(void) setuid(Euid);
	return(ret);
#else /* V7 */
	int	ret;

	if (vfork() == 0) {
		(void) setuid(Uid);
		_exit(stat(file, buf));
	}
	wait(&ret);
	return(ret);
#endif /* V7 */
}