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   1 /*
   2  * Copyright (c) 2006-2007, Kohsuke Ohtani
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  30 #ifndef _RAMFS_H
  31 #define _RAMFS_H
  33 #include <sys/cdefs.h>
  34 #include <sys/prex.h>
  35 #include <sys/types.h>
  37 /* #define DEBUG_RAMFS 1 */
  39 #ifdef DEBUG_RAMFS
  40 #define DPRINTF(a)      dprintf a
  41 #define ASSERT(e)       dassert(e)
  42 #else
  43 #define DPRINTF(a)      do {} while (0)
  44 #define ASSERT(e)
  45 #endif
  47 #if CONFIG_FS_THREADS > 1
  48 #define malloc(s)               malloc_r(s)
  49 #define free(p)                 free_r(p)
  50 #else
  51 #define mutex_init(m)           do {} while (0)
  52 #define mutex_destroy(m)        do {} while (0)
  53 #define mutex_lock(m)           do {} while (0)
  54 #define mutex_unlock(m)         do {} while (0)
  55 #define mutex_trylock(m)        do {} while (0)
  56 #endif
  58 /*
  59  * File/directory node for RAMFS
  60  */
  61 struct ramfs_node {
  62         struct  ramfs_node *rn_next;   /* next node in the same directory */
  63         struct  ramfs_node *rn_child;  /* first child node */
  64         int      rn_type;       /* file or directory */
  65         char    *rn_name;       /* name (null-terminated) */
size_t   rn_namelen;    /* length of name not including terminator */
size_t   rn_size;       /* file size */
  68         char    *rn_buf;        /* buffer to the file data */
size_t   rn_bufsize;    /* allocated buffer size */
  70 };
__BEGIN_DECLS
  73 struct ramfs_node *ramfs_allocate_node(char *name, int type);
  74 void ramfs_free_node(struct ramfs_node *node);
__END_DECLS
  77 #endif /* !_RAMFS_H */