patch-1.3.99 linux/include/linux/amigaffs.h

• Lines: 225
• Date: Mon May 6 14:02:33 1996
• Orig file: v1.3.98/linux/include/linux/amigaffs.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.98/linux/include/linux/amigaffs.h linux/include/linux/amigaffs.h
@@ -0,0 +1,224 @@
+#ifndef AMIGAFFS_H
+#define AMIGAFFS_H
+
+#include <asm/byteorder.h>
+#include <linux/types.h>
+
+/* 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) htonl(((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)
+
+/* 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 Endianess must be known for affs to work.
+#endif
+
+/* The following constants will be checked against the values read native */
+
+#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' */
+
+typedef __u32	ULONG;
+typedef __u16	UWORD;
+typedef __u8	UBYTE;
+
+typedef __s32	LONG;
+typedef __s16	WORD;
+typedef __s8	BYTE;
+
+struct DateStamp
+{
+  ULONG ds_Days;
+  ULONG ds_Minute;
+  ULONG ds_Tick;
+};
+
+#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
+{
+  LONG primary_type;
+  ULONG spare1[2];
+  ULONG hash_size;
+  ULONG spare2;
+  ULONG checksum;
+  ULONG hashtable[0];
+};
+
+struct root_end
+{
+  LONG bm_flag;
+  ULONG bm_keys[25];
+  ULONG bm_extend;
+  struct DateStamp dir_altered;
+  UBYTE disk_name[40];
+  struct DateStamp disk_altered;
+  struct DateStamp disk_made;
+  ULONG spare1[3];
+  LONG secondary_type;
+};
+
+struct dir_front
+{
+  LONG primary_type;
+  ULONG own_key;
+  ULONG spare1[3];
+  ULONG checksum;
+  ULONG hashtable[0];
+};
+
+struct dir_end
+{
+  ULONG spare1;
+  UWORD owner_uid;
+  UWORD owner_gid;
+  ULONG protect;
+  ULONG spare2;
+  UBYTE comment[92];
+  struct DateStamp created;
+  UBYTE dir_name[32];
+  ULONG spare3[2];
+  ULONG link_chain;
+  ULONG spare4[5];
+  ULONG hash_chain;
+  ULONG parent;
+  ULONG spare5;
+  LONG secondary_type;
+};
+
+struct file_front
+{
+  LONG primary_type;
+  ULONG own_key;
+  ULONG block_count;
+  ULONG unknown1;
+  ULONG first_data;
+  ULONG checksum;
+  ULONG blocks[0];
+};
+
+struct file_end
+{
+  ULONG spare1;
+  UWORD owner_uid;
+  UWORD owner_gid;
+  ULONG protect;
+  ULONG byte_size;
+  UBYTE comment[92];
+  struct DateStamp created;
+  UBYTE file_name[32];
+  ULONG spare2;
+  ULONG original;	/* not really in file_end */
+  ULONG link_chain;
+  ULONG spare3[5];
+  ULONG hash_chain;
+  ULONG parent;
+  ULONG extension;
+  LONG secondary_type;
+};
+
+struct hlink_front
+{
+  LONG primary_type;
+  ULONG own_key;
+  ULONG spare1[3];
+  ULONG checksum;
+};
+
+struct hlink_end
+{
+  ULONG spare1;
+  UWORD owner_uid;
+  UWORD owner_gid;
+  ULONG protect;
+  UBYTE comment[92];
+  struct DateStamp created;
+  UBYTE link_name[32];
+  ULONG spare2;
+  ULONG original;
+  ULONG link_chain;
+  ULONG spare3[5];
+  ULONG hash_chain;
+  ULONG parent;
+  ULONG spare4;
+  LONG secondary_type;
+};
+
+struct slink_front
+{
+  LONG primary_type;
+  ULONG own_key;
+  ULONG spare1[3];
+  ULONG checksum;
+  UBYTE	symname[288];	/* 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_SCRIPT|FIBF_READ)) == (FIBF_SCRIPT|FIBF_READ))
+#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_SCRIPT|FIBF_GRP_READ))==(FIBF_SCRIPT|FIBF_GRP_READ))
+#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_SCRIPT|FIBF_OTR_READ))==(FIBF_SCRIPT|FIBF_OTR_READ))
+
+#endif