1 typedef	struct Ioclust	Ioclust;
2 typedef	struct Iobuf	Iobuf;
3 typedef	struct Isofile	Isofile;
4 typedef struct Xdata	Xdata;
5 typedef struct Xfile	Xfile;
6 typedef struct Xfs	Xfs;
7 typedef struct Xfsub	Xfsub;
8 
9 #pragma incomplete Isofile
10 
11 enum
12 {
13 	Sectorsize = 2048,
14 	Maxname = 256,
15 };
16 
17 struct Iobuf
18 {
19 	Ioclust* clust;
20 	long	addr;
21 	uchar*	iobuf;
22 };
23 
24 struct Ioclust
25 {
26 	long	addr;			/* in sectors; good to 8TB */
27 	Xdata*	dev;
28 	Ioclust* next;
29 	Ioclust* prev;
30 	int	busy;
31 	int	nbuf;
32 	Iobuf*	buf;
33 	uchar*	iobuf;
34 };
35 
36 struct Xdata
37 {
38 	Xdata*	next;
39 	char*	name;		/* of underlying file */
40 	Qid	qid;
41 	short	type;
42 	short	fdev;
43 	int	ref;		/* attach count */
44 	int	dev;		/* for read/write */
45 };
46 
47 struct Xfsub
48 {
49 	void	(*reset)(void);
50 	int	(*attach)(Xfile*);
51 	void	(*clone)(Xfile*, Xfile*);
52 	void	(*walkup)(Xfile*);
53 	void	(*walk)(Xfile*, char*);
54 	void	(*open)(Xfile*, int);
55 	void	(*create)(Xfile*, char*, long, int);
56 	long	(*readdir)(Xfile*, uchar*, long, long);
57 	long	(*read)(Xfile*, char*, vlong, long);
58 	long	(*write)(Xfile*, char*, vlong, long);
59 	void	(*clunk)(Xfile*);
60 	void	(*remove)(Xfile*);
61 	void	(*stat)(Xfile*, Dir*);
62 	void	(*wstat)(Xfile*, Dir*);
63 };
64 
65 struct Xfs
66 {
67 	Xdata*	d;		/* how to get the bits */
68 	Xfsub*	s;		/* how to use them */
69 	int	ref;
70 	int	issusp;	/* follows system use sharing protocol */
71 	long	suspoff;	/* if so, offset at which SUSP area begins */
72 	int	isrock;	/* Rock Ridge format */
73 	int	isplan9;	/* has Plan 9-specific directory info */
74 	Qid	rootqid;
75 	Isofile*	ptr;		/* private data */
76 };
77 
78 struct Xfile
79 {
80 	Xfile*	next;		/* in fid hash bucket */
81 	Xfs*	xf;
82 	long	fid;
83 	ulong	flags;
84 	Qid	qid;
85 	int	len;		/* of private data */
86 	Isofile*	ptr;
87 };
88 
89 enum
90 {
91 	Asis,
92 	Clean,
93 	Clunk
94 };
95 
96 enum
97 {
98 	Oread = 1,
99 	Owrite = 2,
100 	Orclose = 4,
101 	Omodes = 3,
102 };
103 
104 extern char	Enonexist[];	/* file does not exist */
105 extern char	Eperm[];	/* permission denied */
106 extern char	Enofile[];	/* no file system specified */
107 extern char	Eauth[];	/* authentication failed */
108 
109 extern char	*srvname;
110 extern char	*deffile;
111 extern int	chatty;
112 extern jmp_buf	err_lab[];
113 extern int	nerr_lab;
114 extern char	err_msg[];
115 
116 extern int nojoliet;
117 extern int noplan9;
118 extern int norock;