/*
 * Copyright (c) 1998 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the Kungliga Tekniska
 *      Högskolan and its contributors.
 * 
 * 4. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __ONTOP_SUBR_H
#define __ONTOP_SUBR_H

#define ONTOP_VNODETABLE "vnode-table"
#define ONTOP_NEWVNODES 40
#define ONTOP_NEWVNODESLIMIT 10

struct ontop_part {
    char refcount;
    char name[MAXPATHLEN];
};

struct ontop_vol {
    char name[MAXPATHLEN];
    int32_t volid;
    ontop_header header;
    int refcount;
    int fd;
    struct {
	long rwp:1;
	long validp:1;
	long precreate:1;
	long wantsignal:1;
    } flags ;
    struct ontop_part *part;
    struct Lock hdrlock;  /* lock for header */
    struct Lock vollock;  /* lock for volume */
} ;

int ontop_initworker(void);
int ontop_print_sizes(void);
int ontop_attach(struct ontop_vol *vol);
int ontop_release(struct ontop_vol *vol);
int ontop_create_vnode(struct ontop_vol *vol, struct ontop_vnode *vnode);
int ontop_open_vnode(struct ontop_vol *vol, int32_t ino,
		 ontop_vnode **vnode, int *rfd);
int ontop_close_vnode(struct ontop_vol *vol, int32_t ino,
		 ontop_vnode *vnode, int fd, int updatep);
int ontop_create_volume(struct ontop_part *part, int32_t volid);
int ontop_alloc_vnode(struct ontop_vol *vol, int dirp, int32_t *rino);
int ontop_free_vnode(struct ontop_vol *vol, int32_t ino);
int ontop_open_volume(struct ontop_part *part, int32_t volid, 
		      struct ontop_vol **vol);
int ontop_close_volume(struct ontop_vol *vol);
int ontop_open_part(char *path, struct ontop_part **part);
int ontop_use_part(struct ontop_part *part);
int ontop_release_part(struct ontop_part *part);


#endif /* __ONTOP_SUBR_H */
