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venti: 32-bit extensions to data structures

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This commit is contained in:
Russ Cox 2009-05-25 02:11:27 -07:00
parent 33b446b8bb
commit 75d048884c
18 changed files with 283 additions and 118 deletions
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24
include/venti.h
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@ -86,7 +86,6 @@ enum
{
VtScoreSize = 20,
VtMaxStringSize = 1024,
VtMaxLumpSize = 56*1024,
VtPointerDepth = 7
};
#define VtMaxFileSize ((1ULL<<48)-1)
@ -137,7 +136,8 @@ enum
_VtEntryDir = 1<<1, /* a directory */
_VtEntryDepthShift = 2, /* shift for pointer depth */
_VtEntryDepthMask = 7<<2, /* mask for pointer depth */
VtEntryLocal = 1<<5 /* for local storage only */
VtEntryLocal = 1<<5, /* for local storage only */
_VtEntryBig = 1<<6,
};
enum
{
@ -146,8 +146,8 @@ enum
struct VtEntry
{
ulong gen; /* generation number */
ushort psize; /* pointer block size */
ushort dsize; /* data block size */
ulong psize; /* pointer block size */
ulong dsize; /* data block size */
uchar type;
uchar flags;
uvlong size;
@ -162,14 +162,15 @@ struct VtRoot
char name[128];
char type[128];
uchar score[VtScoreSize]; /* to a Dir block */
ushort blocksize; /* maximum block size */
ulong blocksize; /* maximum block size */
uchar prev[VtScoreSize]; /* last root block */
};
enum
{
VtRootSize = 300,
VtRootVersion = 2
VtRootVersion = 2,
_VtRootVersionBig = 1<<15,
};
void vtrootpack(VtRoot*, uchar*);
@ -394,7 +395,8 @@ struct VtBlock
uchar *data;
uchar score[VtScoreSize];
uchar type; /* BtXXX */
uchar type; /* VtXXX */
ulong size;
/* internal to cache */
int nlock;
@ -412,14 +414,13 @@ struct VtBlock
u32int vtglobaltolocal(uchar[VtScoreSize]);
void vtlocaltoglobal(u32int, uchar[VtScoreSize]);
VtCache *vtcachealloc(VtConn*, int blocksize, ulong nblocks);
VtCache *vtcachealloc(VtConn*, ulong maxmem);
void vtcachefree(VtCache*);
VtBlock *vtcachelocal(VtCache*, u32int addr, int type);
VtBlock *vtcacheglobal(VtCache*, uchar[VtScoreSize], int type);
VtBlock *vtcacheallocblock(VtCache*, int type);
VtBlock *vtcacheglobal(VtCache*, uchar[VtScoreSize], int type, ulong size);
VtBlock *vtcacheallocblock(VtCache*, int type, ulong size);
void vtcachesetwrite(VtCache*, int(*)(VtConn*,uchar[VtScoreSize],uint,uchar*,int));
void vtblockput(VtBlock*);
u32int vtcacheblocksize(VtCache*);
int vtblockwrite(VtBlock*);
VtBlock *vtblockcopy(VtBlock*);
void vtblockduplock(VtBlock*);
@ -438,6 +439,7 @@ struct VtFile
int local;
VtBlock *b; /* block containing this file */
uchar score[VtScoreSize]; /* score of block containing this file */
int bsize; /* size of block */
/* immutable */
VtCache *c;