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/*

 * Copyright (c) 2006-2007, Kohsuke Ohtani

 * 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. Neither the name of the author nor the names of any co-contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 _RAMFS_H

#define _RAMFS_H

#include <sys/cdefs.h>

#include <sys/prex.h>

#include <sys/types.h>

/* #define DEBUG_RAMFS 1 */

#ifdef DEBUG_RAMFS

#define DPRINTF(a)        dprintf a

#define ASSERT(e)        dassert(e)

#else

#define DPRINTF(a)        do {} while (0)

#define ASSERT(e)

#endif

#if CONFIG_FS_THREADS > 1

#define malloc(s)                malloc_r(s)

#define free(p)                        free_r(p)

#else

#define mutex_init(m)                do {} while (0)

#define mutex_destroy(m)        do {} while (0)

#define mutex_lock(m)                do {} while (0)

#define mutex_unlock(m)                do {} while (0)

#define mutex_trylock(m)        do {} while (0)

#endif

/*

 * File/directory node for RAMFS

 */

struct ramfs_node {

        struct        ramfs_node *rn_next;   /* next node in the same directory */

        struct        ramfs_node *rn_child;  /* first child node */

        int         rn_type;        /* file or directory */

        char        *rn_name;        /* name (null-terminated) */

        size_t         rn_namelen;        /* length of name not including terminator */

        size_t         rn_size;        /* file size */

        char        *rn_buf;        /* buffer to the file data */

        size_t         rn_bufsize;        /* allocated buffer size */

};

__BEGIN_DECLS

struct ramfs_node *ramfs_allocate_node(char *name, int type);

void ramfs_free_node(struct ramfs_node *node);

__END_DECLS

#endif /* !_RAMFS_H */