1 typedef struct MetaBlock MetaBlock;
2 typedef struct MetaEntry MetaEntry;
3 
4 enum
5 {
6 	MaxBlock	= (1UL<<31),
7 };
8 
9 enum {
10 	BytesPerEntry = 100,	/* estimate of bytes per dir entries - determines number of index entries in the block */
11 	FullPercentage = 80,	/* don't allocate in block if more than this percentage full */
12 	FlushSize = 200,	/* number of blocks to flush */
13 	DirtyPercentage = 50,	/* maximum percentage of dirty blocks */
14 };
15 
16 
17 struct MetaEntry
18 {
19 	uchar *p;
20 	ushort size;
21 };
22 
23 struct MetaBlock
24 {
25 	int maxsize;		/* size of block */
26 	int size;		/* size used */
27 	int free;		/* free space within used size */
28 	int maxindex;		/* entries allocated for table */
29 	int nindex;		/* amount of table used */
30 	int unbotch;
31 	uchar *buf;
32 };
33 
34 struct VacDirEnum
35 {
36 	VacFile *file;
37 	u32int boff;
38 	int i, n;
39 	VacDir *buf;
40 };
41 
42 void _mbinit(MetaBlock*, u8int*, uint, uint);
43 int _mbsearch(MetaBlock*, char*, int*, MetaEntry*);