mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-12-28 09:30:41 +00:00
149 lines
4.4 KiB
C
149 lines
4.4 KiB
C
/*****************************************************************************
|
|
* dos33.h
|
|
* Includes, definitions, and helpers pertaining to the Linux driver
|
|
* implementation.
|
|
*
|
|
* Apple II Apple DOS 3.3 Filesystem Driver for Linux 2.4.x
|
|
* Copyright (c) 2001 Vince Weaver
|
|
* based on code Copyright (c) 2001 Matt Jensen.
|
|
* This program is free software distributed under the terms of the GPL.
|
|
*****************************************************************************/
|
|
#ifndef __DOS33_DOS33_H
|
|
#define __DOS33_DOS33_H
|
|
|
|
/*= ProDOS Includes =========================================================*/
|
|
|
|
#include "dos33_fs.h"
|
|
|
|
/*= Code Readability Tags ===================================================*/
|
|
|
|
/* SHORTCUT identifies shortcuts to buried struct members, etc. */
|
|
#define SHORTCUT /* */
|
|
|
|
|
|
/* Simplify access to custom superblock info. */
|
|
#define DOS33_SB(s) ((struct dos33_sb_info *)((s)->u.generic_sbp))
|
|
#define DOS33_I(i) ((struct dos33_inode_info *)&(i)->u.minix_i)
|
|
|
|
#define DOS33_INO_DENT(ino) ((ino)>>31)
|
|
#define DOS33_INO_ENTRY(ino) (((ino)>>16)&0xff)
|
|
#define DOS33_INO_TRACK(ino) (((ino)>>8)&0xff)
|
|
#define DOS33_INO_SECTOR(ino) ((ino)&0xff)
|
|
#define DOS33_MAKE_INO(__d,__n,__t,__s) ( ((__d)<<31) | (((__n)&0xff)<<16) | (((__t)&0xff)<<8) | (__s &0xff))
|
|
|
|
/*= Structure Definitions ===================================================*/
|
|
|
|
/* super_block information specific to ProDOS filesystems. */
|
|
struct dos33_sb_info {
|
|
u32 s_flags;
|
|
|
|
/* Items relating to partition location. */
|
|
u32 s_part_start;
|
|
u32 s_part_size;
|
|
u8 s_part[32];
|
|
|
|
/* Items relating to the volume bitmap. */
|
|
struct semaphore s_bm_lock;
|
|
u32 bitmaps[0x64]; /* one extra to act as NULL terminator */
|
|
u16 s_bm_start;
|
|
int s_bm_free;
|
|
|
|
/* Items relating to miscellaneous locking and serialization. */
|
|
struct semaphore s_dir_lock;
|
|
};
|
|
|
|
/* inode information specific to ProDOS "inodes." Note that this structure is
|
|
never actually instantiated. It is simply overlaid upon inode.u.minix_i to
|
|
avoid the need to modify fs.h in the standard Linux source. Obviously, this
|
|
limits the prodos_inode_info structure to a size <= the size of
|
|
struct minix_inode_info. */
|
|
struct dos33_inode_info {
|
|
u8 i_flags;
|
|
u8 i_filetype;
|
|
u8 i_stype;
|
|
u16 i_key;
|
|
u16 i_auxtype;
|
|
u8 i_access;
|
|
};
|
|
|
|
struct dos33_track_sector {
|
|
u8 track;
|
|
u8 sector;
|
|
} __attribute__((packed));
|
|
|
|
struct dos33_vtol {
|
|
u8 four;
|
|
struct dos33_track_sector catalog;
|
|
u8 dos_version;
|
|
u8 unused1[2];
|
|
u8 volume;
|
|
u8 unused2[0x20];
|
|
u8 ts_pairs;
|
|
u8 unused3[8];
|
|
u8 last_track;
|
|
u8 allocation_direction;
|
|
u8 unused4[2];
|
|
u8 tracks_per_disk;
|
|
u8 sectors_per_track;
|
|
u16 bytes_per_sector;
|
|
u32 bitmaps[0x23];
|
|
u8 unused5[0x3b];
|
|
} __attribute__((packed));
|
|
|
|
struct dos33_file_t {
|
|
struct dos33_track_sector first_tsl;
|
|
u8 file_type;
|
|
u8 file_name[0x1e]; /* high bit set, padded with spaces */
|
|
u16 num_sectors;
|
|
} __attribute__((packed));
|
|
|
|
struct dos33_catalog_sector {
|
|
u8 unused1;
|
|
struct dos33_track_sector next;
|
|
u8 unused[8];
|
|
struct dos33_file_t files[7];
|
|
} __attribute__((packed));
|
|
|
|
struct dos33_ts_list {
|
|
u8 unused1;
|
|
struct dos33_track_sector next;
|
|
u8 unused2[2];
|
|
u16 current_sectors_deep;
|
|
u8 unused3[5];
|
|
struct dos33_track_sector data_location[122];
|
|
} __attribute__((packed));
|
|
|
|
|
|
/*= Externals ===============================================================*/
|
|
|
|
/* dir.c */
|
|
extern struct inode_operations dos33_dir_inode_operations;
|
|
extern struct file_operations dos33_dir_operations;
|
|
|
|
/* file.c */
|
|
extern struct inode_operations dos33_file_inode_operations;
|
|
extern struct file_operations dos33_file_operations;
|
|
extern struct address_space_operations dos33_address_space_operations;
|
|
|
|
/* dentry.c */
|
|
extern struct dentry_operations dos33_dentry_operations;
|
|
|
|
/* inode.c */
|
|
extern void dos33_read_inode(struct inode *);
|
|
extern void dos33_write_inode(struct inode *,int);
|
|
extern void dos33_put_inode(struct inode *);
|
|
|
|
/* super.c */
|
|
extern int dos33_count_free_blocks(struct super_block *sb);
|
|
extern int dos33_alloc_block(struct super_block *sb);
|
|
extern int dos33_free_block(struct super_block *sb,u16 block);
|
|
extern int dos33_free_tree_blocks(struct super_block *sb,u8,u16,u16);
|
|
|
|
/* misc.c */
|
|
extern int dos33_convert_filename(char *filename);
|
|
extern int dos33_check_name(struct qstr *);
|
|
extern struct buffer_head *dos33_bread(struct super_block *,int);
|
|
extern void dos33_brelse(struct buffer_head *);
|
|
|
|
#endif
|