/*
* befs.h
*
* Copyright (C) 2001-2002 Will Dyson <will_dyson@pobox.com>
* Copyright (C) 1999 Makoto Kato (m_kato@ga2.so-net.ne.jp)
*/
#ifndef _LINUX_BEFS_H
#define _LINUX_BEFS_H
#include "befs_fs_types.h"
/* used in debug.c */
#define BEFS_VERSION "0.9.3"
typedef u64 befs_blocknr_t;
/*
* BeFS in memory structures
*/
typedef struct befs_mount_options {
gid_t gid;
uid_t uid;
int use_gid;
int use_uid;
int debug;
char *iocharset;
} befs_mount_options;
typedef struct befs_sb_info {
u32 magic1;
u32 block_size;
u32 block_shift;
int byte_order;
befs_off_t num_blocks;
befs_off_t used_blocks;
u32 inode_size;
u32 magic2;
/* Allocation group information */
u32 blocks_per_ag;
u32 ag_shift;
u32 num_ags;
/* jornal log entry */
befs_block_run log_blocks;
befs_off_t log_start;
befs_off_t log_end;
befs_inode_addr root_dir;
befs_inode_addr indices;
u32 magic3;
befs_mount_options mount_opts;
struct nls_table *nls;
} befs_sb_info;
typedef struct befs_inode_info {
u32 i_flags;
u32 i_type;
befs_inode_addr i_inode_num;
befs_inode_addr i_parent;
befs_inode_addr i_attribute;
union {
befs_data_stream ds;
char symlink[BEFS_SYMLINK_LEN];
} i_data;
struct inode vfs_inode;
} befs_inode_info;
enum befs_err {
BEFS_OK,
BEFS_ERR,
BEFS_BAD_INODE,
BEFS_BT_END,
BEFS_BT_EMPTY,
BEFS_BT_MATCH,
BEFS_BT_PARMATCH,
BEFS_BT_NOT_FOUND
};
/****************************/
/* debug.c */
void befs_error(const struct super_block *sb, const char *fmt, ...);
void befs_warning(const struct super_block *sb, const char *fmt, ...);
void befs_debug(const struct super_block *sb, const char *fmt, ...);
void befs_dump_super_block(const struct super_block *sb, befs_super_block *);
void befs_dump_inode(const struct super_block *sb, befs_inode *);
void befs_dump_index_entry(const struct super_block *sb, befs_btree_super *);
void befs_dump_index_node(const struct super_block *sb, befs_btree_nodehead *);
/****************************/
/* Gets a pointer to the private portion of the super_block
* structure from the public part
*/
static inline befs_sb_info *
BEFS_SB(const struct super_block *super)
{
return (befs_sb_info *) super->s_fs_info;
}
static inline befs_inode_info *
BEFS_I(const struct inode *inode)
{
return list_entry(inode, struct befs_inode_info, vfs_inode);
}
static inline befs_blocknr_t
iaddr2blockno(struct super_block *sb, befs_inode_addr * iaddr)
{
return ((iaddr->allocation_group << BEFS_SB(sb)->ag_shift) +
iaddr->start);
}
static inline befs_inode_addr
blockno2iaddr(struct super_block *sb, befs_blocknr_t blockno)
{
befs_inode_addr iaddr;
iaddr.allocation_group = blockno >> BEFS_SB(sb)->ag_shift;
iaddr.start =
blockno - (iaddr.allocation_group << BEFS_SB(sb)->ag_shift);
iaddr.len = 1;
return iaddr;
}
static inline unsigned int
befs_iaddrs_per_block(struct super_block *sb)
{
return BEFS_SB(sb)->block_size / sizeof (befs_inode_addr);
}
static inline int
befs_iaddr_is_empty(befs_inode_addr * iaddr)
{
return (!iaddr->allocation_group) && (!iaddr->start) && (!iaddr->len);
}
static inline size_t
befs_brun_size(struct super_block *sb, befs_block_run run)
{
return BEFS_SB(sb)->block_size * run.len;
}
#endif /* _LINUX_BEFS_H */
