/* vi:set shiftwidth=2 cindent tabstop=2: */
/*
 * vxtools - Tools for accessing Veritas Journaled FileSystem (VxFS)
 * Copyright (c) 1999 Martin Hinner <mhi@penguin.cz>
 *
 * vxcd.c: Change the current directory
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id$
 */
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <string.h>

#include <libvxfs.h>

char *usage =
"Usage: %s [-dh] [directory]\n"
"\n"
"Report bugs to <mhi@penguin.cz>\n";

int
main (int argc, char **argv)
{
	int ch;
	char *argv0 = argv[0];
	char device[0x100], cwd[0x100];
	int subpart;
	int ino;
	struct vxfs_inode *inode;

	vxverboseon ();
	subpart = 0;

	while ((ch = getopt (argc, argv, "dhp:")) != -1)
		{
			switch (ch)
				{
				case 'd':
					vxdebugon ();
					break;
				case 'h':
					fprintf (stderr, usage, argv0);
					exit (0);
				default:
					fprintf (stderr, usage, argv0);
					exit (1);
				}
		}

	argc -= optind;
	argv += optind;

	if (argc != 1)
		{
			fprintf (stderr, usage, argv0);
			exit (1);
		}
	if (vxreadcwd (device, &subpart, cwd) < 0)
		{
			fprintf (stderr, "%s: No VxFS filesystem mounted, use vxmount(8)\n", argv0);
			exit (1);
		}
	if (vx_open (device, subpart) < 0)
		{
			fprintf (stderr, "%s: Can't mount VxFS %s\n", argv0, device);
			exit (1);
		}
	strcat (cwd, "/");
	if (argv[0][0] == '/')
		strcpy (cwd, argv[0]);
	else
		strcat (cwd, argv[0]);

	if ((ino = vxlookup (cwd)) < 0)
		{
			fprintf (stderr, "%s: Directory %s not found\n", argv0, argv[0]);
			exit (1);
		}
	inode = vxiget (ino);
	if (inode == 0)
		{
			fprintf (stderr, "%s: Cannot get inode %u\n", argv0, ino);
			exit (1);
		}
	if (!VXFS_ISDIR (inode))
		{
			fprintf (stderr, "%s: %s: Not a directory\n", argv0, argv[0]);
			exit (1);
		}
	vxiput (inode);

	vxsavecwd (device, subpart, cwd);

	return 0;
}