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- #ifndef AMIGAFFS_H
- #define AMIGAFFS_H
-
- #include <asm/byteorder.h>
- #include <linux/types.h>
-
- /* AmigaOS allows file names with up to 30 characters length.
- * Names longer than that will be silently truncated. If you
- * want to disallow this, comment out the following #define.
- * Creating filesystem objects with longer names will then
- * result in an error (ENAMETOOLONG).
- */
- /*#define AFFS_NO_TRUNCATE */
-
- /* Ugly macros make the code more pretty. */
-
- #define GET_END_PTR(st,p,sz) ((st *)((char *)(p)+((sz)-sizeof(st))))
- #define AFFS_GET_HASHENTRY(data,hashkey) be32_to_cpu(((struct dir_front *)data)->hashtable[hashkey])
- #define AFFS_BLOCK(data,ino,blk) ((struct file_front *)data)->blocks[AFFS_I2HSIZE(ino)-1-(blk)]
-
- #define FILE_END(p,i) GET_END_PTR(struct file_end,p,AFFS_I2BSIZE(i))
- #define ROOT_END(p,i) GET_END_PTR(struct root_end,p,AFFS_I2BSIZE(i))
- #define DIR_END(p,i) GET_END_PTR(struct dir_end,p,AFFS_I2BSIZE(i))
- #define LINK_END(p,i) GET_END_PTR(struct hlink_end,p,AFFS_I2BSIZE(i))
- #define ROOT_END_S(p,s) GET_END_PTR(struct root_end,p,(s)->s_blocksize)
- #define DATA_FRONT(bh) ((struct data_front *)(bh)->b_data)
- #define DIR_FRONT(bh) ((struct dir_front *)(bh)->b_data)
-
- /* Only for easier debugging if need be */
- #define affs_bread bread
- #define affs_brelse brelse
-
- #ifdef __LITTLE_ENDIAN
- #define BO_EXBITS 0x18UL
- #elif defined(__BIG_ENDIAN)
- #define BO_EXBITS 0x00UL
- #else
- #error Endianness must be known for affs to work.
- #endif
-
- #define FS_OFS 0x444F5300
- #define FS_FFS 0x444F5301
- #define FS_INTLOFS 0x444F5302
- #define FS_INTLFFS 0x444F5303
- #define FS_DCOFS 0x444F5304
- #define FS_DCFFS 0x444F5305
- #define MUFS_FS 0x6d754653 /* 'muFS' */
- #define MUFS_OFS 0x6d754600 /* 'muF\0' */
- #define MUFS_FFS 0x6d754601 /* 'muF\1' */
- #define MUFS_INTLOFS 0x6d754602 /* 'muF\2' */
- #define MUFS_INTLFFS 0x6d754603 /* 'muF\3' */
- #define MUFS_DCOFS 0x6d754604 /* 'muF\4' */
- #define MUFS_DCFFS 0x6d754605 /* 'muF\5' */
-
- #define T_SHORT 2
- #define T_LIST 16
- #define T_DATA 8
-
- #define ST_LINKFILE -4
- #define ST_FILE -3
- #define ST_ROOT 1
- #define ST_USERDIR 2
- #define ST_SOFTLINK 3
- #define ST_LINKDIR 4
-
- struct root_front
- {
- s32 primary_type;
- s32 spare1[2];
- s32 hash_size;
- s32 spare2;
- u32 checksum;
- s32 hashtable[0];
- };
-
- struct root_end
- {
- s32 bm_flag;
- s32 bm_keys[25];
- s32 bm_extend;
- struct DateStamp dir_altered;
- u8 disk_name[40];
- struct DateStamp disk_altered;
- struct DateStamp disk_made;
- s32 spare1[3];
- s32 secondary_type;
- };
-
- struct dir_front
- {
- s32 primary_type;
- s32 own_key;
- s32 spare1[3];
- u32 checksum;
- s32 hashtable[0];
- };
-
- struct dir_end
- {
- s32 spare1;
- s16 owner_uid;
- s16 owner_gid;
- u32 protect;
- s32 spare2;
- u8 comment[92];
- struct DateStamp created;
- u8 dir_name[32];
- s32 spare3[2];
- s32 link_chain;
- s32 spare4[5];
- s32 hash_chain;
- s32 parent;
- s32 spare5;
- s32 secondary_type;
- };
-
- struct file_front
- {
- s32 primary_type;
- s32 own_key;
- s32 block_count;
- s32 unknown1;
- s32 first_data;
- u32 checksum;
- s32 blocks[0];
- };
-
- struct file_end
- {
- s32 spare1;
- s16 owner_uid;
- s16 owner_gid;
- u32 protect;
- s32 byte_size;
- u8 comment[92];
- struct DateStamp created;
- u8 file_name[32];
- s32 spare2;
- s32 original; /* not really in file_end */
- s32 link_chain;
- s32 spare3[5];
- s32 hash_chain;
- s32 parent;
- s32 extension;
- s32 secondary_type;
- };
-
- struct hlink_front
- {
- s32 primary_type;
- s32 own_key;
- s32 spare1[3];
- u32 checksum;
- };
-
- struct hlink_end
- {
- s32 spare1;
- s16 owner_uid;
- s16 owner_gid;
- u32 protect;
- u8 comment[92];
- struct DateStamp created;
- u8 link_name[32];
- s32 spare2;
- s32 original;
- s32 link_chain;
- s32 spare3[5];
- s32 hash_chain;
- s32 parent;
- s32 spare4;
- s32 secondary_type;
- };
-
- struct slink_front
- {
- s32 primary_type;
- s32 own_key;
- s32 spare1[3];
- s32 checksum;
- u8 symname[288]; /* depends on block size */
- };
-
- struct data_front
- {
- s32 primary_type;
- s32 header_key;
- s32 sequence_number;
- s32 data_size;
- s32 next_data;
- s32 checksum;
- u8 data[488]; /* depends on block size */
- };
-
- /* Permission bits */
-
- #define FIBF_OTR_READ 0x8000
- #define FIBF_OTR_WRITE 0x4000
- #define FIBF_OTR_EXECUTE 0x2000
- #define FIBF_OTR_DELETE 0x1000
- #define FIBF_GRP_READ 0x0800
- #define FIBF_GRP_WRITE 0x0400
- #define FIBF_GRP_EXECUTE 0x0200
- #define FIBF_GRP_DELETE 0x0100
-
- #define FIBF_SCRIPT 0x0040
- #define FIBF_PURE 0x0020 /* no use under linux */
- #define FIBF_ARCHIVE 0x0010 /* never set, always cleared on write */
- #define FIBF_READ 0x0008 /* 0 means allowed */
- #define FIBF_WRITE 0x0004 /* 0 means allowed */
- #define FIBF_EXECUTE 0x0002 /* 0 means allowed, ignored under linux */
- #define FIBF_DELETE 0x0001 /* 0 means allowed */
-
- #define FIBF_OWNER 0x000F /* Bits pertaining to owner */
-
- #define AFFS_UMAYWRITE(prot) (((prot) & (FIBF_WRITE|FIBF_DELETE)) == (FIBF_WRITE|FIBF_DELETE))
- #define AFFS_UMAYREAD(prot) ((prot) & FIBF_READ)
- #define AFFS_UMAYEXECUTE(prot) ((prot) & FIBF_EXECUTE)
- #define AFFS_GMAYWRITE(prot) (((prot)&(FIBF_GRP_WRITE|FIBF_GRP_DELETE))==\
- (FIBF_GRP_WRITE|FIBF_GRP_DELETE))
- #define AFFS_GMAYREAD(prot) ((prot) & FIBF_GRP_READ)
- #define AFFS_GMAYEXECUTE(prot) ((prot) & FIBF_EXECUTE)
- #define AFFS_OMAYWRITE(prot) (((prot)&(FIBF_OTR_WRITE|FIBF_OTR_DELETE))==\
- (FIBF_OTR_WRITE|FIBF_OTR_DELETE))
- #define AFFS_OMAYREAD(prot) ((prot) & FIBF_OTR_READ)
- #define AFFS_OMAYEXECUTE(prot) ((prot) & FIBF_EXECUTE)
-
- #endif
-