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  1 97a5e5f2 2003-11-23 devnull /* XXX should be own library? */

  2 97a5e5f2 2003-11-23 devnull /*

  3 97a5e5f2 2003-11-23 devnull  * Packets

  4 97a5e5f2 2003-11-23 devnull  */

  5 97a5e5f2 2003-11-23 devnull enum

  6 97a5e5f2 2003-11-23 devnull {

  7 97a5e5f2 2003-11-23 devnull 	MaxFragSize = 9*1024,

  8 97a5e5f2 2003-11-23 devnull };

  9 97a5e5f2 2003-11-23 devnull 

 10 97a5e5f2 2003-11-23 devnull typedef struct Packet Packet;

 11 97a5e5f2 2003-11-23 devnull Packet *packetalloc(void);

 12 97a5e5f2 2003-11-23 devnull void packetfree(Packet*);

 13 97a5e5f2 2003-11-23 devnull Packet *packetforeign(uchar *buf, int n, void (*free)(void *a), void *a);

 14 97a5e5f2 2003-11-23 devnull Packet *packetdup(Packet*, int offset, int n);

 15 97a5e5f2 2003-11-23 devnull Packet *packetsplit(Packet*, int n);

 16 97a5e5f2 2003-11-23 devnull int packetconsume(Packet*, uchar *buf, int n);

 17 97a5e5f2 2003-11-23 devnull int packettrim(Packet*, int offset, int n);

 18 97a5e5f2 2003-11-23 devnull uchar *packetheader(Packet*, int n);

 19 97a5e5f2 2003-11-23 devnull uchar *packettrailer(Packet*, int n);

 20 97a5e5f2 2003-11-23 devnull int packetprefix(Packet*, uchar *buf, int n);

 21 97a5e5f2 2003-11-23 devnull int packetappend(Packet*, uchar *buf, int n);

 22 97a5e5f2 2003-11-23 devnull int packetconcat(Packet*, Packet*);

 23 97a5e5f2 2003-11-23 devnull uchar *packetpeek(Packet*, uchar *buf, int offset, int n);

 24 97a5e5f2 2003-11-23 devnull int packetcopy(Packet*, uchar *buf, int offset, int n);

 25 97a5e5f2 2003-11-23 devnull int packetfragments(Packet*, IOchunk*, int nio, int offset);

 26 97a5e5f2 2003-11-23 devnull uint packetsize(Packet*);

 27 97a5e5f2 2003-11-23 devnull uint packetasize(Packet*);

 28 97a5e5f2 2003-11-23 devnull int packetcompact(Packet*);

 29 97a5e5f2 2003-11-23 devnull int packetcmp(Packet*, Packet*);

 30 97a5e5f2 2003-11-23 devnull void packetstats(void);

 31 97a5e5f2 2003-11-23 devnull void packetsha1(Packet*, uchar sha1[20]);

 32 97a5e5f2 2003-11-23 devnull 

 33 97a5e5f2 2003-11-23 devnull /* XXX begin actual venti.h */

 34 97a5e5f2 2003-11-23 devnull 

 35 97a5e5f2 2003-11-23 devnull /*

 36 97a5e5f2 2003-11-23 devnull #pragma lib "libnventi.a"

 37 97a5e5f2 2003-11-23 devnull #pragma src "/sys/src/libnventi"

 38 97a5e5f2 2003-11-23 devnull */

 39 97a5e5f2 2003-11-23 devnull 

 40 97a5e5f2 2003-11-23 devnull typedef struct VtFcall VtFcall;

 41 97a5e5f2 2003-11-23 devnull typedef struct VtSha1 VtSha1;

 42 97a5e5f2 2003-11-23 devnull typedef struct VtConn VtConn;

 43 97a5e5f2 2003-11-23 devnull typedef struct VtEntry VtEntry;

 44 97a5e5f2 2003-11-23 devnull typedef struct VtRoot VtRoot;

 45 97a5e5f2 2003-11-23 devnull 

 46 97a5e5f2 2003-11-23 devnull /*

 47 97a5e5f2 2003-11-23 devnull  * Fundamental constants.

 48 97a5e5f2 2003-11-23 devnull  */

 49 97a5e5f2 2003-11-23 devnull enum

 50 97a5e5f2 2003-11-23 devnull {

 51 97a5e5f2 2003-11-23 devnull 	VtScoreSize = 20,

 52 97a5e5f2 2003-11-23 devnull 	VtMaxStringSize = 1024,

 53 97a5e5f2 2003-11-23 devnull 	VtMaxLumpSize	= 56*1024,

 54 97a5e5f2 2003-11-23 devnull 	VtPointerDepth	= 7,

 55 97a5e5f2 2003-11-23 devnull };

 56 2db9e482 2003-11-24 devnull #define VtMaxFileSize ((1ULL<<48)-1)

 57 97a5e5f2 2003-11-23 devnull 

 58 2db9e482 2003-11-24 devnull 

 59 97a5e5f2 2003-11-23 devnull /* 

 60 97a5e5f2 2003-11-23 devnull  * Strings in packets.

 61 97a5e5f2 2003-11-23 devnull  */

 62 97a5e5f2 2003-11-23 devnull int vtputstring(Packet*, char*);

 63 97a5e5f2 2003-11-23 devnull int vtgetstring(Packet*, char**);

 64 97a5e5f2 2003-11-23 devnull 

 65 97a5e5f2 2003-11-23 devnull /*

 66 97a5e5f2 2003-11-23 devnull  * Block types.

 67 97a5e5f2 2003-11-23 devnull  * 

 68 97a5e5f2 2003-11-23 devnull  * The initial Venti protocol had a much

 69 97a5e5f2 2003-11-23 devnull  * less regular list of block types.

 70 97a5e5f2 2003-11-23 devnull  * VtToDiskType converts from new to old.

 71 97a5e5f2 2003-11-23 devnull  */

 72 97a5e5f2 2003-11-23 devnull enum

 73 97a5e5f2 2003-11-23 devnull {

 74 97a5e5f2 2003-11-23 devnull 	VtDataType	= 0<<3,

 75 97a5e5f2 2003-11-23 devnull 	/* VtDataType+1, ... */

 76 97a5e5f2 2003-11-23 devnull 	VtDirType	= 1<<3,

 77 97a5e5f2 2003-11-23 devnull 	/* VtDirType+1, ... */

 78 97a5e5f2 2003-11-23 devnull 	VtRootType	= 2<<3,

 79 97a5e5f2 2003-11-23 devnull 	VtCorruptType,

 80 97a5e5f2 2003-11-23 devnull 	VtMaxType,

 81 97a5e5f2 2003-11-23 devnull 

 82 97a5e5f2 2003-11-23 devnull 	VtTypeDepthMask = 7,

 83 97a5e5f2 2003-11-23 devnull };

 84 97a5e5f2 2003-11-23 devnull 

 85 97a5e5f2 2003-11-23 devnull /* convert to/from on-disk type numbers */

 86 97a5e5f2 2003-11-23 devnull uint vttodisktype(uint);

 87 97a5e5f2 2003-11-23 devnull uint vtfromdisktype(uint);

 88 97a5e5f2 2003-11-23 devnull 

 89 97a5e5f2 2003-11-23 devnull /*

 90 97a5e5f2 2003-11-23 devnull  * VtEntry describes a Venti stream

 91 97a5e5f2 2003-11-23 devnull  */

 92 97a5e5f2 2003-11-23 devnull enum

 93 97a5e5f2 2003-11-23 devnull {

 94 97a5e5f2 2003-11-23 devnull 	VtEntryActive = 1<<0,		/* entry is in use */

 95 97a5e5f2 2003-11-23 devnull 	VtEntryDir = 1<<1,		/* a directory */

 96 97a5e5f2 2003-11-23 devnull 	VtEntryDepthShift = 2,		/* shift for pointer depth */

 97 97a5e5f2 2003-11-23 devnull 	VtEntryDepthMask = 7<<2,	/* mask for pointer depth */

 98 97a5e5f2 2003-11-23 devnull 	VtEntryLocal = 1<<5,		/* for local storage only */

 99 97a5e5f2 2003-11-23 devnull };

100 97a5e5f2 2003-11-23 devnull enum

101 97a5e5f2 2003-11-23 devnull {

102 97a5e5f2 2003-11-23 devnull 	VtEntrySize = 40,

103 97a5e5f2 2003-11-23 devnull };

104 97a5e5f2 2003-11-23 devnull struct VtEntry

105 97a5e5f2 2003-11-23 devnull {

106 97a5e5f2 2003-11-23 devnull 	ulong gen;			/* generation number */

107 97a5e5f2 2003-11-23 devnull 	ushort psize;			/* pointer block size */

108 97a5e5f2 2003-11-23 devnull 	ushort dsize;			/* data block size */

109 97a5e5f2 2003-11-23 devnull 	uchar type;

110 97a5e5f2 2003-11-23 devnull 	uchar flags;

111 97a5e5f2 2003-11-23 devnull 	uvlong size;

112 97a5e5f2 2003-11-23 devnull 	uchar score[VtScoreSize];

113 97a5e5f2 2003-11-23 devnull };

114 97a5e5f2 2003-11-23 devnull 

115 97a5e5f2 2003-11-23 devnull void vtentrypack(VtEntry*, uchar*, int index);

116 97a5e5f2 2003-11-23 devnull int vtentryunpack(VtEntry*, uchar*, int index);

117 97a5e5f2 2003-11-23 devnull 

118 97a5e5f2 2003-11-23 devnull struct VtRoot

119 97a5e5f2 2003-11-23 devnull {

120 97a5e5f2 2003-11-23 devnull 	char name[128];

121 97a5e5f2 2003-11-23 devnull 	char type[128];

122 97a5e5f2 2003-11-23 devnull 	uchar score[VtScoreSize];	/* to a Dir block */

123 97a5e5f2 2003-11-23 devnull 	ushort blocksize;		/* maximum block size */

124 97a5e5f2 2003-11-23 devnull 	uchar prev[VtScoreSize];	/* last root block */

125 97a5e5f2 2003-11-23 devnull };

126 97a5e5f2 2003-11-23 devnull 

127 97a5e5f2 2003-11-23 devnull enum

128 97a5e5f2 2003-11-23 devnull {

129 97a5e5f2 2003-11-23 devnull 	VtRootSize = 300,

130 97a5e5f2 2003-11-23 devnull 	VtRootVersion = 2,

131 97a5e5f2 2003-11-23 devnull };

132 97a5e5f2 2003-11-23 devnull 

133 97a5e5f2 2003-11-23 devnull void vtrootpack(VtRoot*, uchar*);

134 97a5e5f2 2003-11-23 devnull int vtrootunpack(VtRoot*, uchar*);

135 97a5e5f2 2003-11-23 devnull 

136 97a5e5f2 2003-11-23 devnull /*

137 97a5e5f2 2003-11-23 devnull  * score of zero length block

138 97a5e5f2 2003-11-23 devnull  */

139 97a5e5f2 2003-11-23 devnull extern uchar vtzeroscore[VtScoreSize];

140 97a5e5f2 2003-11-23 devnull 

141 97a5e5f2 2003-11-23 devnull /*

142 97a5e5f2 2003-11-23 devnull  * zero extend and truncate blocks

143 97a5e5f2 2003-11-23 devnull  */

144 97a5e5f2 2003-11-23 devnull void vtzeroextend(int type, uchar *buf, uint n, uint nn);

145 97a5e5f2 2003-11-23 devnull uint vtzerotruncate(int type, uchar *buf, uint n);

146 97a5e5f2 2003-11-23 devnull 

147 97a5e5f2 2003-11-23 devnull /*

148 97a5e5f2 2003-11-23 devnull  * parse score: mungs s

149 97a5e5f2 2003-11-23 devnull  */

150 97a5e5f2 2003-11-23 devnull int vtparsescore(char *s, uint len, char **prefix, uchar[VtScoreSize]);

151 97a5e5f2 2003-11-23 devnull 

152 97a5e5f2 2003-11-23 devnull /*

153 97a5e5f2 2003-11-23 devnull  * formatting

154 97a5e5f2 2003-11-23 devnull  * other than noted, these formats all ignore

155 97a5e5f2 2003-11-23 devnull  * the width and precision arguments, and all flags

156 97a5e5f2 2003-11-23 devnull  *

157 97a5e5f2 2003-11-23 devnull  * V	a venti score

158 97a5e5f2 2003-11-23 devnull  */

159 97a5e5f2 2003-11-23 devnull /* #pragma	varargck	type	"V"		uchar* */

160 97a5e5f2 2003-11-23 devnull 

161 97a5e5f2 2003-11-23 devnull int vtscorefmt(Fmt*);

162 97a5e5f2 2003-11-23 devnull 

163 97a5e5f2 2003-11-23 devnull /*

164 97a5e5f2 2003-11-23 devnull  * error-checking malloc et al.

165 97a5e5f2 2003-11-23 devnull  */

166 97a5e5f2 2003-11-23 devnull void vtfree(void *);

167 97a5e5f2 2003-11-23 devnull void *vtmalloc(int);

168 97a5e5f2 2003-11-23 devnull void *vtmallocz(int);

169 97a5e5f2 2003-11-23 devnull void *vtrealloc(void *p, int);

170 97a5e5f2 2003-11-23 devnull void *vtbrk(int n);

171 97a5e5f2 2003-11-23 devnull char *vtstrdup(char *);

172 97a5e5f2 2003-11-23 devnull 

173 97a5e5f2 2003-11-23 devnull /*

174 97a5e5f2 2003-11-23 devnull  * Venti protocol

175 97a5e5f2 2003-11-23 devnull  */

176 97a5e5f2 2003-11-23 devnull 

177 97a5e5f2 2003-11-23 devnull /*

178 97a5e5f2 2003-11-23 devnull  * Crypto strengths

179 97a5e5f2 2003-11-23 devnull  */

180 97a5e5f2 2003-11-23 devnull enum

181 97a5e5f2 2003-11-23 devnull {

182 97a5e5f2 2003-11-23 devnull 	VtCryptoStrengthNone,

183 97a5e5f2 2003-11-23 devnull 	VtCryptoStrengthAuth,

184 97a5e5f2 2003-11-23 devnull 	VtCryptoStrengthWeak,

185 97a5e5f2 2003-11-23 devnull 	VtCryptoStrengthStrong,

186 97a5e5f2 2003-11-23 devnull };

187 97a5e5f2 2003-11-23 devnull 

188 97a5e5f2 2003-11-23 devnull /*

189 97a5e5f2 2003-11-23 devnull  * Crypto suites

190 97a5e5f2 2003-11-23 devnull  */

191 97a5e5f2 2003-11-23 devnull enum

192 97a5e5f2 2003-11-23 devnull {

193 97a5e5f2 2003-11-23 devnull 	VtCryptoNone,

194 97a5e5f2 2003-11-23 devnull 	VtCryptoSSL3,

195 97a5e5f2 2003-11-23 devnull 	VtCryptoTLS1,

196 97a5e5f2 2003-11-23 devnull 	VtCryptoMax,

197 97a5e5f2 2003-11-23 devnull };

198 97a5e5f2 2003-11-23 devnull 

199 97a5e5f2 2003-11-23 devnull /* 

200 97a5e5f2 2003-11-23 devnull  * Codecs

201 97a5e5f2 2003-11-23 devnull  */

202 97a5e5f2 2003-11-23 devnull enum

203 97a5e5f2 2003-11-23 devnull {

204 97a5e5f2 2003-11-23 devnull 	VtCodecNone,

205 97a5e5f2 2003-11-23 devnull 	VtCodecDeflate,

206 97a5e5f2 2003-11-23 devnull 	VtCodecThwack,

207 97a5e5f2 2003-11-23 devnull 	VtCodecMax

208 97a5e5f2 2003-11-23 devnull };

209 97a5e5f2 2003-11-23 devnull 

210 97a5e5f2 2003-11-23 devnull enum

211 97a5e5f2 2003-11-23 devnull {

212 97a5e5f2 2003-11-23 devnull 	VtRerror	= 1,

213 97a5e5f2 2003-11-23 devnull 	VtTping		= 2,

214 97a5e5f2 2003-11-23 devnull 	VtRping,

215 97a5e5f2 2003-11-23 devnull 	VtThello	= 4,

216 97a5e5f2 2003-11-23 devnull 	VtRhello,

217 97a5e5f2 2003-11-23 devnull 	VtTgoodbye	= 6,

218 97a5e5f2 2003-11-23 devnull 	VtRgoodbye,	/* not used */

219 97a5e5f2 2003-11-23 devnull 	VtTauth0	= 8,

220 97a5e5f2 2003-11-23 devnull 	VtRauth0,

221 97a5e5f2 2003-11-23 devnull 	VtTauth1	= 10,

222 97a5e5f2 2003-11-23 devnull 	VtRauth1,

223 97a5e5f2 2003-11-23 devnull 	VtTread		= 12,

224 97a5e5f2 2003-11-23 devnull 	VtRread,

225 97a5e5f2 2003-11-23 devnull 	VtTwrite	= 14,

226 97a5e5f2 2003-11-23 devnull 	VtRwrite,

227 97a5e5f2 2003-11-23 devnull 	VtTsync		= 16,

228 97a5e5f2 2003-11-23 devnull 	VtRsync,

229 97a5e5f2 2003-11-23 devnull 

230 97a5e5f2 2003-11-23 devnull 	VtTmax

231 97a5e5f2 2003-11-23 devnull };

232 97a5e5f2 2003-11-23 devnull 

233 97a5e5f2 2003-11-23 devnull struct VtFcall

234 97a5e5f2 2003-11-23 devnull {

235 97a5e5f2 2003-11-23 devnull 	uchar	type;

236 97a5e5f2 2003-11-23 devnull 	uchar	tag;

237 97a5e5f2 2003-11-23 devnull 

238 97a5e5f2 2003-11-23 devnull 	char	*error;	/* Rerror */

239 97a5e5f2 2003-11-23 devnull 

240 97a5e5f2 2003-11-23 devnull 	char	*version;	/* Thello */

241 97a5e5f2 2003-11-23 devnull 	char	*uid;		/* Thello */

242 97a5e5f2 2003-11-23 devnull 	uchar	strength;	/* Thello */

243 97a5e5f2 2003-11-23 devnull 	uchar	*crypto;	/* Thello */

244 97a5e5f2 2003-11-23 devnull 	uint	ncrypto;	/* Thello */

245 97a5e5f2 2003-11-23 devnull 	uchar	*codec;		/* Thello */

246 97a5e5f2 2003-11-23 devnull 	uint	ncodec;		/* Thello */

247 97a5e5f2 2003-11-23 devnull 	char	*sid;		/* Rhello */

248 97a5e5f2 2003-11-23 devnull 	uchar	rcrypto;	/* Rhello */

249 97a5e5f2 2003-11-23 devnull 	uchar	rcodec;		/* Rhello */

250 97a5e5f2 2003-11-23 devnull 	uchar	*auth;		/* TauthX, RauthX */

251 97a5e5f2 2003-11-23 devnull 	uint	nauth;		/* TauthX, RauthX */

252 97a5e5f2 2003-11-23 devnull 	uchar	score[VtScoreSize];	/* Tread, Rwrite */

253 97a5e5f2 2003-11-23 devnull 	uchar	dtype;		/* Tread, Twrite */

254 97a5e5f2 2003-11-23 devnull 	ushort	count;		/* Tread */

255 97a5e5f2 2003-11-23 devnull 	Packet	*data;		/* Rread, Twrite */

256 97a5e5f2 2003-11-23 devnull };

257 97a5e5f2 2003-11-23 devnull 

258 97a5e5f2 2003-11-23 devnull Packet *vtfcallpack(VtFcall*);

259 97a5e5f2 2003-11-23 devnull int vtfcallunpack(VtFcall*, Packet*);

260 97a5e5f2 2003-11-23 devnull void vtfcallclear(VtFcall*);

261 97a5e5f2 2003-11-23 devnull int vtfcallfmt(Fmt*);

262 97a5e5f2 2003-11-23 devnull 

263 97a5e5f2 2003-11-23 devnull enum

264 97a5e5f2 2003-11-23 devnull {

265 97a5e5f2 2003-11-23 devnull 	VtStateAlloc,

266 97a5e5f2 2003-11-23 devnull 	VtStateConnected,

267 97a5e5f2 2003-11-23 devnull 	VtStateClosed,

268 97a5e5f2 2003-11-23 devnull };

269 97a5e5f2 2003-11-23 devnull 

270 97a5e5f2 2003-11-23 devnull struct VtConn

271 97a5e5f2 2003-11-23 devnull {

272 97a5e5f2 2003-11-23 devnull 	QLock	lk;

273 97a5e5f2 2003-11-23 devnull 	QLock	inlk;

274 97a5e5f2 2003-11-23 devnull 	QLock	outlk;

275 97a5e5f2 2003-11-23 devnull 	int	debug;

276 97a5e5f2 2003-11-23 devnull 	int	infd;

277 97a5e5f2 2003-11-23 devnull 	int	outfd;

278 97a5e5f2 2003-11-23 devnull 	int	muxer;

279 97a5e5f2 2003-11-23 devnull 	void	*writeq;

280 97a5e5f2 2003-11-23 devnull 	void	*readq;

281 97a5e5f2 2003-11-23 devnull 	int	state;

282 97a5e5f2 2003-11-23 devnull 	void *wait[256];

283 97a5e5f2 2003-11-23 devnull 	uint	ntag;

284 97a5e5f2 2003-11-23 devnull 	uint	nsleep;

285 97a5e5f2 2003-11-23 devnull 	Packet	*part;

286 97a5e5f2 2003-11-23 devnull 	Rendez	tagrend;

287 97a5e5f2 2003-11-23 devnull 	Rendez	rpcfork;

288 97a5e5f2 2003-11-23 devnull 	char	*version;

289 97a5e5f2 2003-11-23 devnull 	char	*uid;

290 97a5e5f2 2003-11-23 devnull 	char *sid;

291 97a5e5f2 2003-11-23 devnull };

292 97a5e5f2 2003-11-23 devnull 

293 97a5e5f2 2003-11-23 devnull VtConn *vtconn(int infd, int outfd);

294 97a5e5f2 2003-11-23 devnull VtConn *vtdial(char*);

295 97a5e5f2 2003-11-23 devnull void vtfreeconn(VtConn*);

296 97a5e5f2 2003-11-23 devnull int vtsend(VtConn*, Packet*);

297 97a5e5f2 2003-11-23 devnull Packet *vtrecv(VtConn*);

298 97a5e5f2 2003-11-23 devnull int vtversion(VtConn *z);

299 97a5e5f2 2003-11-23 devnull void vtdebug(VtConn *z, char*, ...);

300 97a5e5f2 2003-11-23 devnull void vthangup(VtConn *z);

301 97a5e5f2 2003-11-23 devnull /* #pragma varargck argpos vtdebug 2 */

302 97a5e5f2 2003-11-23 devnull 

303 97a5e5f2 2003-11-23 devnull /* server */

304 97a5e5f2 2003-11-23 devnull typedef struct VtSrv VtSrv;

305 97a5e5f2 2003-11-23 devnull typedef struct VtReq VtReq;

306 97a5e5f2 2003-11-23 devnull struct VtReq

307 97a5e5f2 2003-11-23 devnull {

308 97a5e5f2 2003-11-23 devnull 	VtFcall tx;

309 97a5e5f2 2003-11-23 devnull 	VtFcall rx;

310 97a5e5f2 2003-11-23 devnull /* private */

311 97a5e5f2 2003-11-23 devnull 	VtSrv *srv;

312 97a5e5f2 2003-11-23 devnull 	void *sc;

313 97a5e5f2 2003-11-23 devnull };

314 97a5e5f2 2003-11-23 devnull 

315 97a5e5f2 2003-11-23 devnull int vtsrvhello(VtConn*);

316 97a5e5f2 2003-11-23 devnull VtSrv *vtlisten(char *addr);

317 97a5e5f2 2003-11-23 devnull VtReq *vtgetreq(VtSrv*);

318 97a5e5f2 2003-11-23 devnull void vtrespond(VtReq*);

319 97a5e5f2 2003-11-23 devnull 

320 97a5e5f2 2003-11-23 devnull /* client */

321 97a5e5f2 2003-11-23 devnull Packet *vtrpc(VtConn*, Packet*);

322 97a5e5f2 2003-11-23 devnull void vtrecvproc(void*);	/* VtConn* */

323 97a5e5f2 2003-11-23 devnull void vtsendproc(void*);	/* VtConn* */

324 97a5e5f2 2003-11-23 devnull 

325 97a5e5f2 2003-11-23 devnull int vtconnect(VtConn*);

326 97a5e5f2 2003-11-23 devnull int vthello(VtConn*);

327 97a5e5f2 2003-11-23 devnull int vtread(VtConn*, uchar score[VtScoreSize], uint type, uchar *buf, int n);

328 97a5e5f2 2003-11-23 devnull int vtwrite(VtConn*, uchar score[VtScoreSize], uint type, uchar *buf, int n);

329 97a5e5f2 2003-11-23 devnull Packet *vtreadpacket(VtConn*, uchar score[VtScoreSize], uint type, int n);

330 97a5e5f2 2003-11-23 devnull int vtwritepacket(VtConn*, uchar score[VtScoreSize], uint type, Packet *p);

331 97a5e5f2 2003-11-23 devnull int vtsync(VtConn*);

332 97a5e5f2 2003-11-23 devnull int vtping(VtConn*);

333 97a5e5f2 2003-11-23 devnull 

334 97a5e5f2 2003-11-23 devnull /*

335 97a5e5f2 2003-11-23 devnull  * Data blocks and block cache.

336 97a5e5f2 2003-11-23 devnull  */

337 97a5e5f2 2003-11-23 devnull enum

338 97a5e5f2 2003-11-23 devnull {

339 97a5e5f2 2003-11-23 devnull 	NilBlock = ~0,

340 97a5e5f2 2003-11-23 devnull };

341 97a5e5f2 2003-11-23 devnull 

342 97a5e5f2 2003-11-23 devnull typedef struct VtBlock VtBlock;

343 97a5e5f2 2003-11-23 devnull typedef struct VtCache VtCache;

344 97a5e5f2 2003-11-23 devnull 

345 97a5e5f2 2003-11-23 devnull struct VtBlock

346 97a5e5f2 2003-11-23 devnull {

347 97a5e5f2 2003-11-23 devnull 	VtCache	*c;

348 97a5e5f2 2003-11-23 devnull 	QLock	lk;

349 97a5e5f2 2003-11-23 devnull 

350 97a5e5f2 2003-11-23 devnull 	uchar	*data;

351 97a5e5f2 2003-11-23 devnull 	uchar	score[VtScoreSize];

352 97a5e5f2 2003-11-23 devnull 	uchar	type;	/* BtXXX */

353 97a5e5f2 2003-11-23 devnull 

354 97a5e5f2 2003-11-23 devnull 	/* internal to cache */

355 97a5e5f2 2003-11-23 devnull 	int		nlock;

356 97a5e5f2 2003-11-23 devnull 	int		iostate;

357 97a5e5f2 2003-11-23 devnull 	int		ref;

358 97a5e5f2 2003-11-23 devnull 	u32int	heap;

359 97a5e5f2 2003-11-23 devnull 	VtBlock	*next;

360 97a5e5f2 2003-11-23 devnull 	VtBlock	**prev;

361 97a5e5f2 2003-11-23 devnull 	u32int	used;

362 97a5e5f2 2003-11-23 devnull 	u32int	used2;

363 97a5e5f2 2003-11-23 devnull 	u32int	addr;

364 97a5e5f2 2003-11-23 devnull 

365 97a5e5f2 2003-11-23 devnull 	/* internal to efile (HACK) */

366 97a5e5f2 2003-11-23 devnull 	int		decrypted;

367 97a5e5f2 2003-11-23 devnull };

368 97a5e5f2 2003-11-23 devnull 

369 97a5e5f2 2003-11-23 devnull u32int vtglobaltolocal(uchar[VtScoreSize]);

370 97a5e5f2 2003-11-23 devnull void vtlocaltoglobal(u32int, uchar[VtScoreSize]);

371 97a5e5f2 2003-11-23 devnull 

372 97a5e5f2 2003-11-23 devnull VtCache *vtcachealloc(VtConn*, int blocksize, ulong nblocks, int mode);

373 97a5e5f2 2003-11-23 devnull void vtcachefree(VtCache*);

374 97a5e5f2 2003-11-23 devnull VtBlock *vtcachelocal(VtCache*, u32int addr, int type);

375 97a5e5f2 2003-11-23 devnull VtBlock *vtcacheglobal(VtCache*, uchar[VtScoreSize], int type);

376 97a5e5f2 2003-11-23 devnull VtBlock *vtcacheallocblock(VtCache*, int type);

377 97a5e5f2 2003-11-23 devnull void vtblockput(VtBlock*);

378 97a5e5f2 2003-11-23 devnull u32int vtcacheblocksize(VtCache*);

379 97a5e5f2 2003-11-23 devnull int vtblockwrite(VtBlock*);

380 97a5e5f2 2003-11-23 devnull VtBlock *vtblockcopy(VtBlock*);

381 97a5e5f2 2003-11-23 devnull void vtblockduplock(VtBlock*);

382 97a5e5f2 2003-11-23 devnull 

383 97a5e5f2 2003-11-23 devnull /*

384 97a5e5f2 2003-11-23 devnull  * Hash tree file tree.

385 97a5e5f2 2003-11-23 devnull  */

386 97a5e5f2 2003-11-23 devnull typedef struct VtFile VtFile;

387 97a5e5f2 2003-11-23 devnull 

388 97a5e5f2 2003-11-23 devnull enum

389 97a5e5f2 2003-11-23 devnull {

390 97a5e5f2 2003-11-23 devnull 	VtOREAD,

391 97a5e5f2 2003-11-23 devnull 	VtOWRITE,

392 97a5e5f2 2003-11-23 devnull 	VtORDWR,

393 97a5e5f2 2003-11-23 devnull 	VtOCREATE = 0x100,

394 97a5e5f2 2003-11-23 devnull };

395 97a5e5f2 2003-11-23 devnull 

396 97a5e5f2 2003-11-23 devnull VtFile *vtfileopenroot(VtCache*, VtEntry*);

397 97a5e5f2 2003-11-23 devnull VtFile *vtfilecreateroot(VtCache*, int psize, int dsize, int type);

398 97a5e5f2 2003-11-23 devnull VtFile *vtfileopen(VtFile*, u32int, int);

399 97a5e5f2 2003-11-23 devnull VtFile *vtfilecreate(VtFile*, int psize, int dsize, int dir);

400 97a5e5f2 2003-11-23 devnull VtBlock *vtfileblock(VtFile*, u32int, int mode);

401 97a5e5f2 2003-11-23 devnull int vtfileblockhash(VtFile*, u32int, uchar[VtScoreSize]);

402 97a5e5f2 2003-11-23 devnull long vtfileread(VtFile*, void*, long, vlong);

403 97a5e5f2 2003-11-23 devnull long vtfilewrite(VtFile*, void*, long, vlong);

404 97a5e5f2 2003-11-23 devnull int vtfileflush(VtFile*);

405 97a5e5f2 2003-11-23 devnull void vtfileincref(VtFile*);

406 97a5e5f2 2003-11-23 devnull void vtfileclose(VtFile*);

407 97a5e5f2 2003-11-23 devnull int vtfilegetentry(VtFile*, VtEntry*);

408 97a5e5f2 2003-11-23 devnull int vtfileblockscore(VtFile*, u32int, uchar[VtScoreSize]);

409 97a5e5f2 2003-11-23 devnull u32int vtfilegetdirsize(VtFile*);

410 97a5e5f2 2003-11-23 devnull int vtfilesetdirsize(VtFile*, u32int);

411 97a5e5f2 2003-11-23 devnull void	vtfileunlock(VtFile*);

412 97a5e5f2 2003-11-23 devnull int vtfilelock(VtFile*, int);

413 97a5e5f2 2003-11-23 devnull int vtfilelock2(VtFile*, VtFile*, int);

414 97a5e5f2 2003-11-23 devnull int vtfileflushbefore(VtFile*, u64int);

415 97a5e5f2 2003-11-23 devnull