mirror of
https://github.com/torvalds/linux.git
synced 2024-12-15 15:41:58 +00:00
a9721f3152
split the data structures that exist in host- and disk-endian variants, annotate the fields of disk-endian ones, propagate changes. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
157 lines
3.2 KiB
C
157 lines
3.2 KiB
C
/*
|
|
* 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_disk_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_disk_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;
|
|
}
|
|
|
|
#include "endian.h"
|
|
|
|
#endif /* _LINUX_BEFS_H */
|