1 /* Copyright (c) Russ Cox, MIT; see src/libdiskfs/COPYRIGHT */
2 
3 AUTOLIB(diskfs)
4 
5 typedef struct Block Block;
6 typedef struct Disk Disk;
7 typedef struct Fsys Fsys;
8 
9 #ifndef _NFS3H_	/* in case sunrpc.h, nfs3.h are not included */
10 typedef struct SunAuthUnix SunAuthUnix;
11 typedef struct Nfs3Attr Nfs3Attr;
12 typedef struct Nfs3Entry Nfs3Entry;
13 typedef struct Nfs3Handle Nfs3Handle;
14 typedef int Nfs3Status;
15 #endif
16 struct VtCache;
17 
18 struct Disk
19 {
20 	Block *(*_read)(Disk *disk, u32int count, u64int offset);
21 	int (*_sync)(Disk*);
22 	void (*_close)(Disk*);
23 	void *priv;
24 };
25 
26 struct Block
27 {
28 	Disk *disk;
29 	u32int len;
30 	uchar *data;
31 	void (*_close)(Block*);
32 	void *priv;
33 };
34 
35 struct Fsys
36 {
37 	u32int blocksize;
38 	u32int nblock;
39 	char *type;
40 
41 	Disk *disk;
42 	Block *(*_readblock)(Fsys *fsys, u64int blockno);
43 	int (*_sync)(Fsys *fsys);
44 	void (*_close)(Fsys *fsys);
45 
46 	Nfs3Status (*_root)(Fsys*, Nfs3Handle*);
47 	Nfs3Status (*_access)(Fsys*, SunAuthUnix*, Nfs3Handle*, u32int, u32int*, Nfs3Attr*);
48 	Nfs3Status (*_lookup)(Fsys*, SunAuthUnix*, Nfs3Handle*, char*, Nfs3Handle*);
49 	Nfs3Status (*_getattr)(Fsys*, SunAuthUnix*, Nfs3Handle*, Nfs3Attr*);
50 	Nfs3Status (*_readdir)(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, u32int count, u64int cookie, uchar**, u32int*, uchar*);
51 	Nfs3Status (*_readfile)(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, u32int count, u64int offset, uchar**, u32int*, uchar*);
52 	Nfs3Status (*_readlink)(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, char **link);
53 
54 	void *priv;
55 	
56 	u64int (*fileblock)(Fsys *fsys, Nfs3Handle *h, u64int offset);
57 };
58 
59 struct Handle
60 {
61 	uchar h[64];
62 	int len;
63 };
64 
65 void		blockdump(Block *b, char *desc);
66 void		blockput(Block *b);
67 
68 Disk*	diskcache(Disk*, uint, uint);
69 Disk*	diskopenventi(struct VtCache*, uchar*);
70 Disk*	diskopenfile(char *file);
71 Disk*	diskpart(Disk*, u64int offset, u64int count);
72 void		diskpartabandon(Disk*);
73 
74 Disk*	diskopen(char *file);
75 void		diskclose(Disk *disk);
76 Block*	diskread(Disk *disk, u32int, u64int offset);
77 int		disksync(Disk *disk);
78 
79 Fsys*	fsysopenffs(Disk*);
80 Fsys*	fsysopenhfs(Disk*);
81 Fsys*	fsysopenkfs(Disk*);
82 Fsys*	fsysopenext2(Disk*);
83 Fsys*	fsysopenfat(Disk*);
84 
85 Fsys*	fsysopen(Disk *disk);
86 Block*	fsysreadblock(Fsys *fsys, u64int blockno);
87 int		fsyssync(Fsys *fsys);
88 void		fsysclose(Fsys *fsys);
89 
90 Nfs3Status		fsysroot(Fsys *fsys, Nfs3Handle *h);
91 Nfs3Status		fsyslookup(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, char *name, Nfs3Handle *nh);
92 Nfs3Status		fsysgetattr(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, Nfs3Attr *attr);
93 Nfs3Status		fsysreaddir(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, u32int count, u64int cookie, uchar **e, u32int *ne, uchar*);
94 Nfs3Status		fsysreadfile(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, u32int, u64int, uchar**, u32int*, uchar*);
95 Nfs3Status		fsysreadlink(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, char **plink);
96 Nfs3Status		fsysaccess(Fsys *fsys, SunAuthUnix*, Nfs3Handle*, u32int, u32int*, Nfs3Attr*);
97 void*	emalloc(ulong size);	/* provided by caller */
98 
99 extern int allowall;