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/*
* <libfs.h>
*
* Open Hack'Ware BIOS: file system library definitions
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License V2
* as published by the Free Software Foundation
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#if !defined(__OHW_LIBFS_H__)
#define __OHW_LIBFS_H__
//#define DEBUG_FS 1
#define FS_SPECIAL "<special>"
static inline int is_special_file (const unsigned char *name)
{
int splen = strlen(FS_SPECIAL);
return name[0] == '\0' && memcmp(name + 1, FS_SPECIAL, splen) == 0 &&
name[splen + 1] == '\0';
}
#if defined (DEBUG_FS)
#define FS_DPRINTF(fmt, args...) \
do { dprintf("%s: " fmt, __func__ , ##args); } while (0)
#else
#define FS_DPRINTF(fmt, args...) \
do { } while (0)
#endif
#define FS_ERROR(fmt, args...) \
do { printf("ERROR in %s: " fmt, __func__ , ##args); } while (0)
typedef struct fs_ops_t {
inode_t *(*get_inode)(inode_t *parent, const unsigned char *name);
void (*put_inode)(inode_t *inode);
uint32_t (*map_bloc)(inode_t *inode, uint32_t bloc);
inode_t *(*get_special_inode)(fs_t *fs, int type);
} fs_ops_t;
#define MAXNAME_LEN 1024
struct fs_t {
int type;
part_t *part;
inode_t *root;
fs_ops_t *fs_ops;
uint32_t size;
unsigned char *name;
inode_t *bootfile;
inode_t *bootdir;
void *private;
};
struct dir_t {
inode_t *inode;
dirent_t *cur;
int pos;
};
/* All internals use inodes */
struct inode_t {
fs_t *fs;
/* parent inode */
inode_t *parent;
/* Next inode at the same level */
inode_t *next;
/* First child inode */
inode_t *child;
/* Private data */
int refcount;
uint32_t flags;
unsigned char *name;
int nb_blocs;
pos_t *blocs;
pos_t size;
void *private;
uint32_t vbloc;
uint32_t vpos;
};
/* Low-level helpers */
enum {
FILE_UNKNOWN = -1,
FILE_ROOT = 0,
FILE_BOOT,
FILE_BOOTDIR,
};
void fs_cache_add_inode (inode_t *parent, inode_t *inode);
int fs_raw_probe (part_t *part, uint32_t *size,
fs_ops_t **fs_ops, unsigned char **name,
void **private);
int fs_ext2_probe (part_t *part, uint32_t *size,
fs_ops_t **fs_ops, unsigned char **name,
void **private);
int fs_isofs_probe (part_t *part, uint32_t *size,
fs_ops_t **fs_ops, unsigned char **name,
void **private);
int fs_hfs_probe (part_t *part, uint32_t *size,
fs_ops_t **fs_ops, unsigned char **name,
void **private);
int fs_raw_set_bootfile (part_t *part,
uint32_t start_bloc, uint32_t start_offset,
uint32_t size_bloc, uint32_t size_offset);
enum {
FS_TYPE_UNKNOWN = -1,
FS_TYPE_RAW = 0,
FS_TYPE_EXT2,
FS_TYPE_ISOFS,
FS_TYPE_HFS,
FS_TYPE_HFSP,
};
#endif /* !defined(__OHW_LIBFS_H__) */
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