/* ----------------------------------------------------------------------- *

 *   

 *  mount.c - Abstract mount code used by modules for an unexpected

 *            filesystem type

 *

 *   Copyright 1997-2000 Transmeta Corporation - All Rights Reserved

 *

 *   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, Inc., 675 Mass Ave, Cambridge MA 02139,

 *   USA; 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.

 *

 * ----------------------------------------------------------------------- */

#include <stdlib.h>

#include <string.h>

#include "automount.h"

#define ERR_PREFIX	"(mount):"

/* These filesystems are known not to work with the "generic" module */

/* Note: starting with Samba 2.0.6, smbfs is handled generically.    */

static char *not_generic[] = { "nfs", "userfs", "afs", "autofs",

			       "changer", "bind", NULL

};

int do_mount(struct autofs_point *ap, const char *root, const char *name, int name_len,

	     const char *what, const char *fstype, const char *options)

{

	struct mount_mod *mod;

	const char *modstr;

	size_t root_len = root ? strlen(root) : 0;

	char **ngp;

	int rv;

	/* Initially look for a mount module but don't issue an error on fail */

	mod = open_mount(modstr = fstype, NULL);

	if (!mod) {

		for (ngp = not_generic; *ngp; ngp++) {

			if (!strcmp(fstype, *ngp))

				break;

		}

		/*

		 * If there's not a known mount module use the generic module,

		 * otherwise redo the fs mount module with error reporting

		 */

		if (!*ngp)

			mod = open_mount(modstr = "generic", ERR_PREFIX);

		else

			mod = open_mount(modstr = fstype, ERR_PREFIX);

		if (!mod) {

			error(ap->logopt,

			      "cannot find mount method for filesystem %s",

			      fstype);

			return -1;

		}

	}

	if (*name == '/')

		debug(ap->logopt,

		      "%s %s type %s options %s using module %s",

		      what, name, fstype, options, modstr);

	else if (root_len > 1 && root[root_len - 1] == '/')

		debug(ap->logopt,

		      "%s %s type %s options %s using module %s",

		      what, root, fstype, options, modstr);

	else

		debug(ap->logopt,

		      "%s %s/%s type %s options %s using module %s",

		      what, root, name, fstype, options, modstr);

	rv = mod->mount_mount(ap, root, name, name_len, what, fstype, options, mod->context);

	close_mount(mod);

	return rv;

}