1 f7012583 2003-11-25 devnull #ifndef _VENTI_H_
2 f7012583 2003-11-25 devnull #define _VENTI_H_ 1
3 f7012583 2003-11-25 devnull #if defined(__cplusplus)
4 f7012583 2003-11-25 devnull extern "C" {
6 97a5e5f2 2003-11-23 devnull /* XXX should be own library? */
12 97a5e5f2 2003-11-23 devnull MaxFragSize = 9*1024,
15 97a5e5f2 2003-11-23 devnull typedef struct Packet Packet;
16 97a5e5f2 2003-11-23 devnull Packet *packetalloc(void);
17 97a5e5f2 2003-11-23 devnull void packetfree(Packet*);
18 97a5e5f2 2003-11-23 devnull Packet *packetforeign(uchar *buf, int n, void (*free)(void *a), void *a);
19 97a5e5f2 2003-11-23 devnull Packet *packetdup(Packet*, int offset, int n);
20 97a5e5f2 2003-11-23 devnull Packet *packetsplit(Packet*, int n);
21 97a5e5f2 2003-11-23 devnull int packetconsume(Packet*, uchar *buf, int n);
22 97a5e5f2 2003-11-23 devnull int packettrim(Packet*, int offset, int n);
23 97a5e5f2 2003-11-23 devnull uchar *packetheader(Packet*, int n);
24 97a5e5f2 2003-11-23 devnull uchar *packettrailer(Packet*, int n);
25 d23a617a 2004-03-15 devnull void packetprefix(Packet*, uchar *buf, int n);
26 d23a617a 2004-03-15 devnull void packetappend(Packet*, uchar *buf, int n);
27 d23a617a 2004-03-15 devnull void packetconcat(Packet*, Packet*);
28 97a5e5f2 2003-11-23 devnull uchar *packetpeek(Packet*, uchar *buf, int offset, int n);
29 97a5e5f2 2003-11-23 devnull int packetcopy(Packet*, uchar *buf, int offset, int n);
30 97a5e5f2 2003-11-23 devnull int packetfragments(Packet*, IOchunk*, int nio, int offset);
31 97a5e5f2 2003-11-23 devnull uint packetsize(Packet*);
32 97a5e5f2 2003-11-23 devnull uint packetasize(Packet*);
33 97a5e5f2 2003-11-23 devnull int packetcompact(Packet*);
34 97a5e5f2 2003-11-23 devnull int packetcmp(Packet*, Packet*);
35 97a5e5f2 2003-11-23 devnull void packetstats(void);
36 97a5e5f2 2003-11-23 devnull void packetsha1(Packet*, uchar sha1[20]);
38 97a5e5f2 2003-11-23 devnull /* XXX begin actual venti.h */
41 97a5e5f2 2003-11-23 devnull #pragma lib "libnventi.a"
42 97a5e5f2 2003-11-23 devnull #pragma src "/sys/src/libnventi"
45 97a5e5f2 2003-11-23 devnull typedef struct VtFcall VtFcall;
46 97a5e5f2 2003-11-23 devnull typedef struct VtConn VtConn;
47 97a5e5f2 2003-11-23 devnull typedef struct VtEntry VtEntry;
48 97a5e5f2 2003-11-23 devnull typedef struct VtRoot VtRoot;
51 97a5e5f2 2003-11-23 devnull * Fundamental constants.
55 97a5e5f2 2003-11-23 devnull VtScoreSize = 20,
56 97a5e5f2 2003-11-23 devnull VtMaxStringSize = 1024,
57 97a5e5f2 2003-11-23 devnull VtMaxLumpSize = 56*1024,
58 97a5e5f2 2003-11-23 devnull VtPointerDepth = 7,
60 2db9e482 2003-11-24 devnull #define VtMaxFileSize ((1ULL<<48)-1)
64 97a5e5f2 2003-11-23 devnull * Strings in packets.
66 97a5e5f2 2003-11-23 devnull int vtputstring(Packet*, char*);
67 97a5e5f2 2003-11-23 devnull int vtgetstring(Packet*, char**);
70 97a5e5f2 2003-11-23 devnull * Block types.
72 97a5e5f2 2003-11-23 devnull * The initial Venti protocol had a much
73 97a5e5f2 2003-11-23 devnull * less regular list of block types.
74 97a5e5f2 2003-11-23 devnull * VtToDiskType converts from new to old.
78 97a5e5f2 2003-11-23 devnull VtDataType = 0<<3,
79 97a5e5f2 2003-11-23 devnull /* VtDataType+1, ... */
80 97a5e5f2 2003-11-23 devnull VtDirType = 1<<3,
81 97a5e5f2 2003-11-23 devnull /* VtDirType+1, ... */
82 97a5e5f2 2003-11-23 devnull VtRootType = 2<<3,
83 97a5e5f2 2003-11-23 devnull VtCorruptType,
84 97a5e5f2 2003-11-23 devnull VtMaxType,
86 97a5e5f2 2003-11-23 devnull VtTypeDepthMask = 7,
87 d23a617a 2004-03-15 devnull VtTypeBaseMask = ~VtTypeDepthMask,
90 97a5e5f2 2003-11-23 devnull /* convert to/from on-disk type numbers */
91 97a5e5f2 2003-11-23 devnull uint vttodisktype(uint);
92 97a5e5f2 2003-11-23 devnull uint vtfromdisktype(uint);
95 97a5e5f2 2003-11-23 devnull * VtEntry describes a Venti stream
97 eacbfb24 2004-03-15 devnull * The _ enums are only used on the wire.
98 eacbfb24 2004-03-15 devnull * They are not present in the VtEntry structure
99 eacbfb24 2004-03-15 devnull * and should not be used by client programs.
100 eacbfb24 2004-03-15 devnull * (The info is in the type field.)
104 97a5e5f2 2003-11-23 devnull VtEntryActive = 1<<0, /* entry is in use */
105 d23a617a 2004-03-15 devnull _VtEntryDir = 1<<1, /* a directory */
106 d23a617a 2004-03-15 devnull _VtEntryDepthShift = 2, /* shift for pointer depth */
107 d23a617a 2004-03-15 devnull _VtEntryDepthMask = 7<<2, /* mask for pointer depth */
108 97a5e5f2 2003-11-23 devnull VtEntryLocal = 1<<5, /* for local storage only */
112 97a5e5f2 2003-11-23 devnull VtEntrySize = 40,
114 97a5e5f2 2003-11-23 devnull struct VtEntry
116 97a5e5f2 2003-11-23 devnull ulong gen; /* generation number */
117 97a5e5f2 2003-11-23 devnull ushort psize; /* pointer block size */
118 97a5e5f2 2003-11-23 devnull ushort dsize; /* data block size */
119 97a5e5f2 2003-11-23 devnull uchar type;
120 97a5e5f2 2003-11-23 devnull uchar flags;
121 97a5e5f2 2003-11-23 devnull uvlong size;
122 97a5e5f2 2003-11-23 devnull uchar score[VtScoreSize];
125 97a5e5f2 2003-11-23 devnull void vtentrypack(VtEntry*, uchar*, int index);
126 97a5e5f2 2003-11-23 devnull int vtentryunpack(VtEntry*, uchar*, int index);
128 97a5e5f2 2003-11-23 devnull struct VtRoot
130 97a5e5f2 2003-11-23 devnull char name[128];
131 97a5e5f2 2003-11-23 devnull char type[128];
132 97a5e5f2 2003-11-23 devnull uchar score[VtScoreSize]; /* to a Dir block */
133 97a5e5f2 2003-11-23 devnull ushort blocksize; /* maximum block size */
134 97a5e5f2 2003-11-23 devnull uchar prev[VtScoreSize]; /* last root block */
139 97a5e5f2 2003-11-23 devnull VtRootSize = 300,
140 97a5e5f2 2003-11-23 devnull VtRootVersion = 2,
143 97a5e5f2 2003-11-23 devnull void vtrootpack(VtRoot*, uchar*);
144 97a5e5f2 2003-11-23 devnull int vtrootunpack(VtRoot*, uchar*);
147 97a5e5f2 2003-11-23 devnull * score of zero length block
149 97a5e5f2 2003-11-23 devnull extern uchar vtzeroscore[VtScoreSize];
152 97a5e5f2 2003-11-23 devnull * zero extend and truncate blocks
154 97a5e5f2 2003-11-23 devnull void vtzeroextend(int type, uchar *buf, uint n, uint nn);
155 97a5e5f2 2003-11-23 devnull uint vtzerotruncate(int type, uchar *buf, uint n);
158 97a5e5f2 2003-11-23 devnull * parse score: mungs s
160 d23a617a 2004-03-15 devnull int vtparsescore(char *s, char **prefix, uchar[VtScoreSize]);
163 97a5e5f2 2003-11-23 devnull * formatting
164 97a5e5f2 2003-11-23 devnull * other than noted, these formats all ignore
165 97a5e5f2 2003-11-23 devnull * the width and precision arguments, and all flags
167 97a5e5f2 2003-11-23 devnull * V a venti score
169 97a5e5f2 2003-11-23 devnull /* #pragma varargck type "V" uchar* */
171 97a5e5f2 2003-11-23 devnull int vtscorefmt(Fmt*);
174 97a5e5f2 2003-11-23 devnull * error-checking malloc et al.
176 97a5e5f2 2003-11-23 devnull void vtfree(void *);
177 97a5e5f2 2003-11-23 devnull void *vtmalloc(int);
178 97a5e5f2 2003-11-23 devnull void *vtmallocz(int);
179 97a5e5f2 2003-11-23 devnull void *vtrealloc(void *p, int);
180 97a5e5f2 2003-11-23 devnull void *vtbrk(int n);
181 97a5e5f2 2003-11-23 devnull char *vtstrdup(char *);
184 97a5e5f2 2003-11-23 devnull * Venti protocol
188 97a5e5f2 2003-11-23 devnull * Crypto strengths
192 97a5e5f2 2003-11-23 devnull VtCryptoStrengthNone,
193 97a5e5f2 2003-11-23 devnull VtCryptoStrengthAuth,
194 97a5e5f2 2003-11-23 devnull VtCryptoStrengthWeak,
195 97a5e5f2 2003-11-23 devnull VtCryptoStrengthStrong,
199 97a5e5f2 2003-11-23 devnull * Crypto suites
203 97a5e5f2 2003-11-23 devnull VtCryptoNone,
204 97a5e5f2 2003-11-23 devnull VtCryptoSSL3,
205 97a5e5f2 2003-11-23 devnull VtCryptoTLS1,
206 97a5e5f2 2003-11-23 devnull VtCryptoMax,
210 97a5e5f2 2003-11-23 devnull * Codecs
214 97a5e5f2 2003-11-23 devnull VtCodecNone,
215 97a5e5f2 2003-11-23 devnull VtCodecDeflate,
216 97a5e5f2 2003-11-23 devnull VtCodecThwack,
217 97a5e5f2 2003-11-23 devnull VtCodecMax
222 97a5e5f2 2003-11-23 devnull VtRerror = 1,
223 97a5e5f2 2003-11-23 devnull VtTping = 2,
224 97a5e5f2 2003-11-23 devnull VtRping,
225 97a5e5f2 2003-11-23 devnull VtThello = 4,
226 97a5e5f2 2003-11-23 devnull VtRhello,
227 97a5e5f2 2003-11-23 devnull VtTgoodbye = 6,
228 97a5e5f2 2003-11-23 devnull VtRgoodbye, /* not used */
229 97a5e5f2 2003-11-23 devnull VtTauth0 = 8,
230 97a5e5f2 2003-11-23 devnull VtRauth0,
231 97a5e5f2 2003-11-23 devnull VtTauth1 = 10,
232 97a5e5f2 2003-11-23 devnull VtRauth1,
233 97a5e5f2 2003-11-23 devnull VtTread = 12,
234 97a5e5f2 2003-11-23 devnull VtRread,
235 97a5e5f2 2003-11-23 devnull VtTwrite = 14,
236 97a5e5f2 2003-11-23 devnull VtRwrite,
237 97a5e5f2 2003-11-23 devnull VtTsync = 16,
238 97a5e5f2 2003-11-23 devnull VtRsync,
243 97a5e5f2 2003-11-23 devnull struct VtFcall
245 97a5e5f2 2003-11-23 devnull uchar type;
246 97a5e5f2 2003-11-23 devnull uchar tag;
248 97a5e5f2 2003-11-23 devnull char *error; /* Rerror */
250 97a5e5f2 2003-11-23 devnull char *version; /* Thello */
251 97a5e5f2 2003-11-23 devnull char *uid; /* Thello */
252 97a5e5f2 2003-11-23 devnull uchar strength; /* Thello */
253 97a5e5f2 2003-11-23 devnull uchar *crypto; /* Thello */
254 97a5e5f2 2003-11-23 devnull uint ncrypto; /* Thello */
255 97a5e5f2 2003-11-23 devnull uchar *codec; /* Thello */
256 97a5e5f2 2003-11-23 devnull uint ncodec; /* Thello */
257 97a5e5f2 2003-11-23 devnull char *sid; /* Rhello */
258 97a5e5f2 2003-11-23 devnull uchar rcrypto; /* Rhello */
259 97a5e5f2 2003-11-23 devnull uchar rcodec; /* Rhello */
260 97a5e5f2 2003-11-23 devnull uchar *auth; /* TauthX, RauthX */
261 97a5e5f2 2003-11-23 devnull uint nauth; /* TauthX, RauthX */
262 97a5e5f2 2003-11-23 devnull uchar score[VtScoreSize]; /* Tread, Rwrite */
263 97a5e5f2 2003-11-23 devnull uchar dtype; /* Tread, Twrite */
264 97a5e5f2 2003-11-23 devnull ushort count; /* Tread */
265 97a5e5f2 2003-11-23 devnull Packet *data; /* Rread, Twrite */
268 97a5e5f2 2003-11-23 devnull Packet *vtfcallpack(VtFcall*);
269 97a5e5f2 2003-11-23 devnull int vtfcallunpack(VtFcall*, Packet*);
270 97a5e5f2 2003-11-23 devnull void vtfcallclear(VtFcall*);
271 97a5e5f2 2003-11-23 devnull int vtfcallfmt(Fmt*);
275 97a5e5f2 2003-11-23 devnull VtStateAlloc,
276 97a5e5f2 2003-11-23 devnull VtStateConnected,
277 97a5e5f2 2003-11-23 devnull VtStateClosed,
280 97a5e5f2 2003-11-23 devnull struct VtConn
282 97a5e5f2 2003-11-23 devnull QLock lk;
283 97a5e5f2 2003-11-23 devnull QLock inlk;
284 97a5e5f2 2003-11-23 devnull QLock outlk;
285 97a5e5f2 2003-11-23 devnull int debug;
286 97a5e5f2 2003-11-23 devnull int infd;
287 97a5e5f2 2003-11-23 devnull int outfd;
288 97a5e5f2 2003-11-23 devnull int muxer;
289 97a5e5f2 2003-11-23 devnull void *writeq;
290 97a5e5f2 2003-11-23 devnull void *readq;
291 97a5e5f2 2003-11-23 devnull int state;
292 97a5e5f2 2003-11-23 devnull void *wait[256];
293 97a5e5f2 2003-11-23 devnull uint ntag;
294 97a5e5f2 2003-11-23 devnull uint nsleep;
295 97a5e5f2 2003-11-23 devnull Packet *part;
296 97a5e5f2 2003-11-23 devnull Rendez tagrend;
297 97a5e5f2 2003-11-23 devnull Rendez rpcfork;
298 97a5e5f2 2003-11-23 devnull char *version;
299 97a5e5f2 2003-11-23 devnull char *uid;
300 97a5e5f2 2003-11-23 devnull char *sid;
303 97a5e5f2 2003-11-23 devnull VtConn *vtconn(int infd, int outfd);
304 97a5e5f2 2003-11-23 devnull VtConn *vtdial(char*);
305 97a5e5f2 2003-11-23 devnull void vtfreeconn(VtConn*);
306 97a5e5f2 2003-11-23 devnull int vtsend(VtConn*, Packet*);
307 97a5e5f2 2003-11-23 devnull Packet *vtrecv(VtConn*);
308 97a5e5f2 2003-11-23 devnull int vtversion(VtConn *z);
309 97a5e5f2 2003-11-23 devnull void vtdebug(VtConn *z, char*, ...);
310 97a5e5f2 2003-11-23 devnull void vthangup(VtConn *z);
311 97a5e5f2 2003-11-23 devnull /* #pragma varargck argpos vtdebug 2 */
313 97a5e5f2 2003-11-23 devnull /* server */
314 97a5e5f2 2003-11-23 devnull typedef struct VtSrv VtSrv;
315 97a5e5f2 2003-11-23 devnull typedef struct VtReq VtReq;
316 97a5e5f2 2003-11-23 devnull struct VtReq
318 97a5e5f2 2003-11-23 devnull VtFcall tx;
319 97a5e5f2 2003-11-23 devnull VtFcall rx;
320 97a5e5f2 2003-11-23 devnull /* private */
321 97a5e5f2 2003-11-23 devnull VtSrv *srv;
322 97a5e5f2 2003-11-23 devnull void *sc;
325 97a5e5f2 2003-11-23 devnull int vtsrvhello(VtConn*);
326 97a5e5f2 2003-11-23 devnull VtSrv *vtlisten(char *addr);
327 97a5e5f2 2003-11-23 devnull VtReq *vtgetreq(VtSrv*);
328 97a5e5f2 2003-11-23 devnull void vtrespond(VtReq*);
330 97a5e5f2 2003-11-23 devnull /* client */
331 97a5e5f2 2003-11-23 devnull Packet *vtrpc(VtConn*, Packet*);
332 97a5e5f2 2003-11-23 devnull void vtrecvproc(void*); /* VtConn* */
333 97a5e5f2 2003-11-23 devnull void vtsendproc(void*); /* VtConn* */
335 97a5e5f2 2003-11-23 devnull int vtconnect(VtConn*);
336 97a5e5f2 2003-11-23 devnull int vthello(VtConn*);
337 97a5e5f2 2003-11-23 devnull int vtread(VtConn*, uchar score[VtScoreSize], uint type, uchar *buf, int n);
338 97a5e5f2 2003-11-23 devnull int vtwrite(VtConn*, uchar score[VtScoreSize], uint type, uchar *buf, int n);
339 97a5e5f2 2003-11-23 devnull Packet *vtreadpacket(VtConn*, uchar score[VtScoreSize], uint type, int n);
340 97a5e5f2 2003-11-23 devnull int vtwritepacket(VtConn*, uchar score[VtScoreSize], uint type, Packet *p);
341 97a5e5f2 2003-11-23 devnull int vtsync(VtConn*);
342 97a5e5f2 2003-11-23 devnull int vtping(VtConn*);
345 97a5e5f2 2003-11-23 devnull * Data blocks and block cache.
349 97a5e5f2 2003-11-23 devnull NilBlock = ~0,
352 97a5e5f2 2003-11-23 devnull typedef struct VtBlock VtBlock;
353 97a5e5f2 2003-11-23 devnull typedef struct VtCache VtCache;
355 97a5e5f2 2003-11-23 devnull struct VtBlock
357 97a5e5f2 2003-11-23 devnull VtCache *c;
358 97a5e5f2 2003-11-23 devnull QLock lk;
360 97a5e5f2 2003-11-23 devnull uchar *data;
361 97a5e5f2 2003-11-23 devnull uchar score[VtScoreSize];
362 97a5e5f2 2003-11-23 devnull uchar type; /* BtXXX */
364 97a5e5f2 2003-11-23 devnull /* internal to cache */
365 97a5e5f2 2003-11-23 devnull int nlock;
366 97a5e5f2 2003-11-23 devnull int iostate;
367 97a5e5f2 2003-11-23 devnull int ref;
368 97a5e5f2 2003-11-23 devnull u32int heap;
369 97a5e5f2 2003-11-23 devnull VtBlock *next;
370 97a5e5f2 2003-11-23 devnull VtBlock **prev;
371 97a5e5f2 2003-11-23 devnull u32int used;
372 97a5e5f2 2003-11-23 devnull u32int used2;
373 97a5e5f2 2003-11-23 devnull u32int addr;
375 97a5e5f2 2003-11-23 devnull /* internal to efile (HACK) */
376 97a5e5f2 2003-11-23 devnull int decrypted;
379 97a5e5f2 2003-11-23 devnull u32int vtglobaltolocal(uchar[VtScoreSize]);
380 97a5e5f2 2003-11-23 devnull void vtlocaltoglobal(u32int, uchar[VtScoreSize]);
382 97a5e5f2 2003-11-23 devnull VtCache *vtcachealloc(VtConn*, int blocksize, ulong nblocks, int mode);
383 97a5e5f2 2003-11-23 devnull void vtcachefree(VtCache*);
384 97a5e5f2 2003-11-23 devnull VtBlock *vtcachelocal(VtCache*, u32int addr, int type);
385 97a5e5f2 2003-11-23 devnull VtBlock *vtcacheglobal(VtCache*, uchar[VtScoreSize], int type);
386 97a5e5f2 2003-11-23 devnull VtBlock *vtcacheallocblock(VtCache*, int type);
387 97a5e5f2 2003-11-23 devnull void vtblockput(VtBlock*);
388 97a5e5f2 2003-11-23 devnull u32int vtcacheblocksize(VtCache*);
389 97a5e5f2 2003-11-23 devnull int vtblockwrite(VtBlock*);
390 97a5e5f2 2003-11-23 devnull VtBlock *vtblockcopy(VtBlock*);
391 97a5e5f2 2003-11-23 devnull void vtblockduplock(VtBlock*);
392 d23a617a 2004-03-15 devnull int vtblockdirty(VtBlock*);
395 97a5e5f2 2003-11-23 devnull * Hash tree file tree.
397 97a5e5f2 2003-11-23 devnull typedef struct VtFile VtFile;
398 d23a617a 2004-03-15 devnull struct VtFile
400 d23a617a 2004-03-15 devnull QLock lk;
401 d23a617a 2004-03-15 devnull int ref;
402 d23a617a 2004-03-15 devnull int local;
403 d23a617a 2004-03-15 devnull VtBlock *b; /* block containing this file */
404 d23a617a 2004-03-15 devnull uchar score[VtScoreSize]; /* score of block containing this file */
406 d23a617a 2004-03-15 devnull /* immutable */
407 d23a617a 2004-03-15 devnull VtCache *c;
408 d23a617a 2004-03-15 devnull int mode;
409 d23a617a 2004-03-15 devnull u32int gen;
410 d23a617a 2004-03-15 devnull int dsize;
411 d23a617a 2004-03-15 devnull int dir;
412 d23a617a 2004-03-15 devnull VtFile *parent;
413 d23a617a 2004-03-15 devnull int epb; /* entries per block in parent */
414 d23a617a 2004-03-15 devnull u32int offset; /* entry offset in parent */
419 97a5e5f2 2003-11-23 devnull VtOREAD,
420 97a5e5f2 2003-11-23 devnull VtOWRITE,
421 97a5e5f2 2003-11-23 devnull VtORDWR,
422 97a5e5f2 2003-11-23 devnull VtOCREATE = 0x100,
425 97a5e5f2 2003-11-23 devnull VtFile *vtfileopenroot(VtCache*, VtEntry*);
426 97a5e5f2 2003-11-23 devnull VtFile *vtfilecreateroot(VtCache*, int psize, int dsize, int type);
427 97a5e5f2 2003-11-23 devnull VtFile *vtfileopen(VtFile*, u32int, int);
428 97a5e5f2 2003-11-23 devnull VtFile *vtfilecreate(VtFile*, int psize, int dsize, int dir);
429 97a5e5f2 2003-11-23 devnull VtBlock *vtfileblock(VtFile*, u32int, int mode);
430 97a5e5f2 2003-11-23 devnull long vtfileread(VtFile*, void*, long, vlong);
431 97a5e5f2 2003-11-23 devnull long vtfilewrite(VtFile*, void*, long, vlong);
432 97a5e5f2 2003-11-23 devnull int vtfileflush(VtFile*);
433 97a5e5f2 2003-11-23 devnull void vtfileincref(VtFile*);
434 97a5e5f2 2003-11-23 devnull void vtfileclose(VtFile*);
435 97a5e5f2 2003-11-23 devnull int vtfilegetentry(VtFile*, VtEntry*);
436 d23a617a 2004-03-15 devnull int vtfilesetentry(VtFile*, VtEntry*);
437 97a5e5f2 2003-11-23 devnull int vtfileblockscore(VtFile*, u32int, uchar[VtScoreSize]);
438 97a5e5f2 2003-11-23 devnull u32int vtfilegetdirsize(VtFile*);
439 97a5e5f2 2003-11-23 devnull int vtfilesetdirsize(VtFile*, u32int);
440 97a5e5f2 2003-11-23 devnull void vtfileunlock(VtFile*);
441 97a5e5f2 2003-11-23 devnull int vtfilelock(VtFile*, int);
442 97a5e5f2 2003-11-23 devnull int vtfilelock2(VtFile*, VtFile*, int);
443 97a5e5f2 2003-11-23 devnull int vtfileflushbefore(VtFile*, u64int);
444 d23a617a 2004-03-15 devnull int vtfiletruncate(VtFile*);
445 d23a617a 2004-03-15 devnull uvlong vtfilegetsize(VtFile*);
446 d23a617a 2004-03-15 devnull int vtfilesetsize(VtFile*, uvlong);
447 d23a617a 2004-03-15 devnull int vtfileremove(VtFile*);
449 f7012583 2003-11-25 devnull #if defined(__cplusplus)
