1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef AMIGAFFS_H
  3#define AMIGAFFS_H
  4
  5#include <linux/types.h>
  6#include <asm/byteorder.h>
  7
  8#define FS_OFS		0x444F5300
  9#define FS_FFS		0x444F5301
 10#define FS_INTLOFS	0x444F5302
 11#define FS_INTLFFS	0x444F5303
 12#define FS_DCOFS	0x444F5304
 13#define FS_DCFFS	0x444F5305
 14#define MUFS_FS		0x6d754653   /* 'muFS' */
 15#define MUFS_OFS	0x6d754600   /* 'muF\0' */
 16#define MUFS_FFS	0x6d754601   /* 'muF\1' */
 17#define MUFS_INTLOFS	0x6d754602   /* 'muF\2' */
 18#define MUFS_INTLFFS	0x6d754603   /* 'muF\3' */
 19#define MUFS_DCOFS	0x6d754604   /* 'muF\4' */
 20#define MUFS_DCFFS	0x6d754605   /* 'muF\5' */
 21
 22#define T_SHORT		2
 23#define T_LIST		16
 24#define T_DATA		8
 25
 26#define ST_LINKFILE	-4
 27#define ST_FILE		-3
 28#define ST_ROOT		1
 29#define ST_USERDIR	2
 30#define ST_SOFTLINK	3
 31#define ST_LINKDIR	4
 32
 33#define AFFS_ROOT_BMAPS		25
 34
 35/* Seconds since Amiga epoch of 1978/01/01 to UNIX */
 36#define AFFS_EPOCH_DELTA ((8 * 365 + 2) * 86400LL)
 37
 38struct affs_date {
 39	__be32 days;
 40	__be32 mins;
 41	__be32 ticks;
 42};
 43
 44struct affs_short_date {
 45	__be16 days;
 46	__be16 mins;
 47	__be16 ticks;
 48};
 49
 50struct affs_root_head {
 51	__be32 ptype;
 52	__be32 spare1;
 53	__be32 spare2;
 54	__be32 hash_size;
 55	__be32 spare3;
 56	__be32 checksum;
 57	__be32 hashtable[1];
 58};
 59
 60struct affs_root_tail {
 61	__be32 bm_flag;
 62	__be32 bm_blk[AFFS_ROOT_BMAPS];
 63	__be32 bm_ext;
 64	struct affs_date root_change;
 65	u8 disk_name[32];
 66	__be32 spare1;
 67	__be32 spare2;
 68	struct affs_date disk_change;
 69	struct affs_date disk_create;
 70	__be32 spare3;
 71	__be32 spare4;
 72	__be32 dcache;
 73	__be32 stype;
 74};
 75
 76struct affs_head {
 77	__be32 ptype;
 78	__be32 key;
 79	__be32 block_count;
 80	__be32 spare1;
 81	__be32 first_data;
 82	__be32 checksum;
 83	__be32 table[1];
 84};
 85
 86struct affs_tail {
 87	__be32 spare1;
 88	__be16 uid;
 89	__be16 gid;
 90	__be32 protect;
 91	__be32 size;
 92	u8 comment[92];
 93	struct affs_date change;
 94	u8 name[32];
 95	__be32 spare2;
 96	__be32 original;
 97	__be32 link_chain;
 98	__be32 spare[5];
 99	__be32 hash_chain;
100	__be32 parent;
101	__be32 extension;
102	__be32 stype;
103};
104
105struct slink_front
106{
107	__be32 ptype;
108	__be32 key;
109	__be32 spare1[3];
110	__be32 checksum;
111	u8 symname[1];	/* depends on block size */
112};
113
114struct affs_data_head
115{
116	__be32 ptype;
117	__be32 key;
118	__be32 sequence;
119	__be32 size;
120	__be32 next;
121	__be32 checksum;
122	u8 data[1];	/* depends on block size */
123};
124
125/* Permission bits */
126
127#define FIBF_OTR_READ		0x8000
128#define FIBF_OTR_WRITE		0x4000
129#define FIBF_OTR_EXECUTE	0x2000
130#define FIBF_OTR_DELETE		0x1000
131#define FIBF_GRP_READ		0x0800
132#define FIBF_GRP_WRITE		0x0400
133#define FIBF_GRP_EXECUTE	0x0200
134#define FIBF_GRP_DELETE		0x0100
135
136#define FIBF_HIDDEN		0x0080
137#define FIBF_SCRIPT		0x0040
138#define FIBF_PURE		0x0020		/* no use under linux */
139#define FIBF_ARCHIVED		0x0010		/* never set, always cleared on write */
140#define FIBF_NOREAD		0x0008		/* 0 means allowed */
141#define FIBF_NOWRITE		0x0004		/* 0 means allowed */
142#define FIBF_NOEXECUTE		0x0002		/* 0 means allowed, ignored under linux */
143#define FIBF_NODELETE		0x0001		/* 0 means allowed */
144
145#define FIBF_OWNER		0x000F		/* Bits pertaining to owner */
146#define FIBF_MASK		0xEE0E		/* Bits modified by Linux */
147
148#endif