#ifndef _ADFS_FS_H
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#ifndef _ADFS_FS_H
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#define _ADFS_FS_H
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#define _ADFS_FS_H
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#include <linux/types.h>
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#include <linux/types.h>
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/*
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/*
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* Structures of data on the disk
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* Structures of data on the disk
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*/
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*/
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/*
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/*
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* Disc Record at disc address 0xc00
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* Disc Record at disc address 0xc00
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*/
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*/
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struct adfs_discrecord {
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struct adfs_discrecord {
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unsigned char log2secsize;
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unsigned char log2secsize;
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unsigned char secspertrack;
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unsigned char secspertrack;
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unsigned char heads;
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unsigned char heads;
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unsigned char density;
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unsigned char density;
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unsigned char idlen;
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unsigned char idlen;
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unsigned char log2bpmb;
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unsigned char log2bpmb;
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unsigned char skew;
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unsigned char skew;
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unsigned char bootoption;
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unsigned char bootoption;
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unsigned char lowsector;
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unsigned char lowsector;
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unsigned char nzones;
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unsigned char nzones;
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unsigned short zone_spare;
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unsigned short zone_spare;
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unsigned long root;
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unsigned long root;
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unsigned long disc_size;
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unsigned long disc_size;
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unsigned short disc_id;
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unsigned short disc_id;
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unsigned char disc_name[10];
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unsigned char disc_name[10];
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unsigned long disc_type;
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unsigned long disc_type;
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unsigned long disc_size_high;
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unsigned long disc_size_high;
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unsigned char log2sharesize:4;
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unsigned char log2sharesize:4;
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unsigned char unused:4;
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unsigned char unused:4;
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unsigned char big_flag:1;
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unsigned char big_flag:1;
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};
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};
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#define ADFS_DISCRECORD (0xc00)
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#define ADFS_DISCRECORD (0xc00)
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#define ADFS_DR_OFFSET (0x1c0)
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#define ADFS_DR_OFFSET (0x1c0)
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#define ADFS_DR_SIZE 60
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#define ADFS_DR_SIZE 60
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#define ADFS_SUPER_MAGIC 0xadf5
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#define ADFS_SUPER_MAGIC 0xadf5
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#define ADFS_FREE_FRAG 0
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#define ADFS_FREE_FRAG 0
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#define ADFS_BAD_FRAG 1
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#define ADFS_BAD_FRAG 1
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#define ADFS_ROOT_FRAG 2
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#define ADFS_ROOT_FRAG 2
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/*
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/*
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* Directory header
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* Directory header
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*/
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*/
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struct adfs_dirheader {
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struct adfs_dirheader {
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unsigned char startmasseq;
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unsigned char startmasseq;
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unsigned char startname[4];
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unsigned char startname[4];
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};
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};
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#define ADFS_NEWDIR_SIZE 2048
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#define ADFS_NEWDIR_SIZE 2048
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#define ADFS_OLDDIR_SIZE 1024
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#define ADFS_OLDDIR_SIZE 1024
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#define ADFS_NUM_DIR_ENTRIES 77
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#define ADFS_NUM_DIR_ENTRIES 77
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/*
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/*
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* Directory entries
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* Directory entries
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*/
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*/
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struct adfs_direntry {
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struct adfs_direntry {
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char dirobname[10];
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char dirobname[10];
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#define ADFS_NAME_LEN 10
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#define ADFS_NAME_LEN 10
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__u8 dirload[4];
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__u8 dirload[4];
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__u8 direxec[4];
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__u8 direxec[4];
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__u8 dirlen[4];
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__u8 dirlen[4];
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__u8 dirinddiscadd[3];
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__u8 dirinddiscadd[3];
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__u8 newdiratts;
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__u8 newdiratts;
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#define ADFS_NDA_OWNER_READ (1 << 0)
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#define ADFS_NDA_OWNER_READ (1 << 0)
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#define ADFS_NDA_OWNER_WRITE (1 << 1)
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#define ADFS_NDA_OWNER_WRITE (1 << 1)
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#define ADFS_NDA_LOCKED (1 << 2)
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#define ADFS_NDA_LOCKED (1 << 2)
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#define ADFS_NDA_DIRECTORY (1 << 3)
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#define ADFS_NDA_DIRECTORY (1 << 3)
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#define ADFS_NDA_EXECUTE (1 << 4)
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#define ADFS_NDA_EXECUTE (1 << 4)
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#define ADFS_NDA_PUBLIC_READ (1 << 5)
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#define ADFS_NDA_PUBLIC_READ (1 << 5)
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#define ADFS_NDA_PUBLIC_WRITE (1 << 6)
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#define ADFS_NDA_PUBLIC_WRITE (1 << 6)
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};
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};
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#define ADFS_MAX_NAME_LEN 255
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#define ADFS_MAX_NAME_LEN 255
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struct adfs_idir_entry {
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struct adfs_idir_entry {
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__u32 inode_no; /* Address */
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__u32 inode_no; /* Address */
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__u32 file_id; /* file id */
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__u32 file_id; /* file id */
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__u32 name_len; /* name length */
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__u32 name_len; /* name length */
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__u32 size; /* size */
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__u32 size; /* size */
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__u32 mtime; /* modification time */
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__u32 mtime; /* modification time */
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__u32 filetype; /* RiscOS file type */
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__u32 filetype; /* RiscOS file type */
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__u8 mode; /* internal mode */
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__u8 mode; /* internal mode */
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char name[ADFS_MAX_NAME_LEN]; /* file name */
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char name[ADFS_MAX_NAME_LEN]; /* file name */
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};
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};
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/*
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/*
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* Directory tail
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* Directory tail
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*/
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*/
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union adfs_dirtail {
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union adfs_dirtail {
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struct {
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struct {
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unsigned char dirlastmask;
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unsigned char dirlastmask;
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char dirname[10];
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char dirname[10];
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unsigned char dirparent[3];
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unsigned char dirparent[3];
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char dirtitle[19];
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char dirtitle[19];
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unsigned char reserved[14];
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unsigned char reserved[14];
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unsigned char endmasseq;
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unsigned char endmasseq;
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unsigned char endname[4];
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unsigned char endname[4];
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unsigned char dircheckbyte;
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unsigned char dircheckbyte;
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} old;
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} old;
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struct {
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struct {
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unsigned char dirlastmask;
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unsigned char dirlastmask;
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unsigned char reserved[2];
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unsigned char reserved[2];
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unsigned char dirparent[3];
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unsigned char dirparent[3];
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char dirtitle[19];
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char dirtitle[19];
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char dirname[10];
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char dirname[10];
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unsigned char endmasseq;
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unsigned char endmasseq;
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unsigned char endname[4];
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unsigned char endname[4];
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unsigned char dircheckbyte;
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unsigned char dircheckbyte;
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} new;
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} new;
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};
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};
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#ifdef __KERNEL__
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#ifdef __KERNEL__
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/*
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/*
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* Calculate the boot block checksum on an ADFS drive. Note that this will
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* Calculate the boot block checksum on an ADFS drive. Note that this will
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* appear to be correct if the sector contains all zeros, so also check that
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* appear to be correct if the sector contains all zeros, so also check that
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* the disk size is non-zero!!!
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* the disk size is non-zero!!!
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*/
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*/
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extern inline int adfs_checkbblk (unsigned char *ptr)
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extern inline int adfs_checkbblk (unsigned char *ptr)
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{
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{
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unsigned int result = 0;
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unsigned int result = 0;
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unsigned char *p = ptr + 511;
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unsigned char *p = ptr + 511;
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do {
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do {
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result = (result & 0xff) + (result >> 8);
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result = (result & 0xff) + (result >> 8);
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result = result + *--p;
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result = result + *--p;
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} while (p != ptr);
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} while (p != ptr);
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return (result & 0xff) != ptr[511];
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return (result & 0xff) != ptr[511];
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}
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}
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/* dir.c */
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/* dir.c */
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extern unsigned int adfs_val (unsigned char *p, int len);
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extern unsigned int adfs_val (unsigned char *p, int len);
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extern int adfs_dir_read_parent (struct inode *inode, struct buffer_head **bhp);
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extern int adfs_dir_read_parent (struct inode *inode, struct buffer_head **bhp);
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extern int adfs_dir_read (struct inode *inode, struct buffer_head **bhp);
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extern int adfs_dir_read (struct inode *inode, struct buffer_head **bhp);
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extern int adfs_dir_check (struct inode *inode, struct buffer_head **bhp,
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extern int adfs_dir_check (struct inode *inode, struct buffer_head **bhp,
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int buffers, union adfs_dirtail *dtp);
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int buffers, union adfs_dirtail *dtp);
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extern void adfs_dir_free (struct buffer_head **bhp, int buffers);
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extern void adfs_dir_free (struct buffer_head **bhp, int buffers);
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extern int adfs_dir_get (struct super_block *sb, struct buffer_head **bhp,
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extern int adfs_dir_get (struct super_block *sb, struct buffer_head **bhp,
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int buffers, int pos, unsigned long parent_object_id,
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int buffers, int pos, unsigned long parent_object_id,
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struct adfs_idir_entry *ide);
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struct adfs_idir_entry *ide);
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extern int adfs_dir_find_entry (struct super_block *sb, struct buffer_head **bhp,
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extern int adfs_dir_find_entry (struct super_block *sb, struct buffer_head **bhp,
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int buffers, unsigned int index,
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int buffers, unsigned int index,
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struct adfs_idir_entry *ide);
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struct adfs_idir_entry *ide);
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/* inode.c */
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/* inode.c */
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extern int adfs_inode_validate (struct inode *inode);
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extern int adfs_inode_validate (struct inode *inode);
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extern unsigned long adfs_inode_generate (unsigned long parent_id, int diridx);
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extern unsigned long adfs_inode_generate (unsigned long parent_id, int diridx);
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extern unsigned long adfs_inode_objid (struct inode *inode);
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extern unsigned long adfs_inode_objid (struct inode *inode);
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extern unsigned int adfs_parent_bmap (struct inode *inode, int block);
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extern unsigned int adfs_parent_bmap (struct inode *inode, int block);
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extern int adfs_bmap (struct inode *inode, int block);
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extern int adfs_bmap (struct inode *inode, int block);
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extern void adfs_read_inode (struct inode *inode);
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extern void adfs_read_inode (struct inode *inode);
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/* map.c */
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/* map.c */
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extern int adfs_map_lookup (struct super_block *sb, int frag_id, int offset);
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extern int adfs_map_lookup (struct super_block *sb, int frag_id, int offset);
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/* namei.c */
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/* namei.c */
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extern int adfs_lookup (struct inode * dir, const char * name, int len,
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extern int adfs_lookup (struct inode * dir, const char * name, int len,
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struct inode ** result);
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struct inode ** result);
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/* super.c */
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/* super.c */
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extern int init_adfs_fs (void);
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extern int init_adfs_fs (void);
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extern void adfs_error (struct super_block *, const char *, const char *, ...);
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extern void adfs_error (struct super_block *, const char *, const char *, ...);
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/*
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/*
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* Inodes and file operations
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* Inodes and file operations
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*/
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*/
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/* dir.c */
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/* dir.c */
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extern struct inode_operations adfs_dir_inode_operations;
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extern struct inode_operations adfs_dir_inode_operations;
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/* file.c */
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/* file.c */
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extern struct inode_operations adfs_file_inode_operations;
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extern struct inode_operations adfs_file_inode_operations;
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#endif
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#endif
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#endif
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#endif
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