/*

 * 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 2004 Sun Microsystems, Inc.  All rights reserved.

 * Use is subject to license terms.

 */

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

/*

 * file.c - file dependency vertex code

 *

 *   In principle, file dependencies should be retested on mount/unmount

 *   events, and dependency error flow used to determine whether a lost file

 *   affects the dependent service.  If mount/unmount events are not available,

 *   the kstat facility (which registers or deregisters a statistic at

 *   mount/umount) could be used as an indirect filesystem event detector.

 *

 *   In practice, file dependencies are checked only for existence at start

 *   time.

 */

#include <sys/stat.h>

#include <sys/types.h>

#include <errno.h>

#include <stdio.h>

#include <string.h>

#include <strings.h>

#include <startd.h>

int

file_ready(graph_vertex_t *v)

{

	char *fn;

	struct stat sbuf;

	int r;

	char *file_fmri = v->gv_name;

	/*

	 * Advance through file: FMRI until we have an absolute file path.

	 */

	if (strncmp(file_fmri, "file:///", sizeof ("file:///") - 1) == 0) {

		fn = file_fmri + sizeof ("file://") - 1;

	} else if (strncmp(file_fmri, "file://localhost/",

		sizeof ("file://localhost/") - 1) == 0) {

		fn = file_fmri + sizeof ("file://localhost") - 1;

	} else if (strncmp(file_fmri, "file://", sizeof ("file://") - 1)

	    == 0) {

		fn = file_fmri + sizeof ("file://") - 1;

		/*

		 * Again, search for the next '/'.

		 */

		if ((fn = strchr(fn, '/')) == NULL)

			return (0);

	}

	/*

	 * If stat(2) succeeds for that path, then the dependency is satisfied.

	 */

	do {

		r = stat(fn, &sbuf);

	} while (r == -1 && errno == EINTR);

	return (r == -1 ? 0 : 1);

}