1 a0d146ed 2005-07-12 devnull #include "stdinc.h"
  2 a0d146ed 2005-07-12 devnull #include "dat.h"
  3 a0d146ed 2005-07-12 devnull #include "fns.h"
  4 a0d146ed 2005-07-12 devnull 
  5 a0d146ed 2005-07-12 devnull QLock godot;
  6 a0d146ed 2005-07-12 devnull char *host;
  7 a0d146ed 2005-07-12 devnull int readonly = 1;	/* for part.c */
  8 a0d146ed 2005-07-12 devnull int mainstacksize = 256*1024;
  9 a0d146ed 2005-07-12 devnull Channel *c;
 10 a0d146ed 2005-07-12 devnull VtConn *z;
 11 a0d146ed 2005-07-12 devnull int fast;	/* and a bit unsafe; only for benchmarking */
 12 a0d146ed 2005-07-12 devnull int haveaoffset;
 13 a0d146ed 2005-07-12 devnull int maxwrites = -1;
 14 a0d146ed 2005-07-12 devnull 
 15 a0d146ed 2005-07-12 devnull typedef struct ZClump ZClump;
 16 a0d146ed 2005-07-12 devnull struct ZClump
 17 a0d146ed 2005-07-12 devnull {
 18 a0d146ed 2005-07-12 devnull 	ZBlock *lump;
 19 a0d146ed 2005-07-12 devnull 	Clump cl;
 20 a0d146ed 2005-07-12 devnull 	u64int aa;
 21 a0d146ed 2005-07-12 devnull };
 22 a0d146ed 2005-07-12 devnull 
 23 a0d146ed 2005-07-12 devnull void
 24 a0d146ed 2005-07-12 devnull usage(void)
 25 a0d146ed 2005-07-12 devnull {
 26 a0d146ed 2005-07-12 devnull 	fprint(2, "usage: wrarena [-h host] arenafile [offset]\n");
 27 a0d146ed 2005-07-12 devnull 	threadexitsall("usage");
 28 a0d146ed 2005-07-12 devnull }
 29 a0d146ed 2005-07-12 devnull 
 30 a0d146ed 2005-07-12 devnull void
 31 a0d146ed 2005-07-12 devnull vtsendthread(void *v)
 32 a0d146ed 2005-07-12 devnull {
 33 a0d146ed 2005-07-12 devnull 	ZClump zcl;
 34 a0d146ed 2005-07-12 devnull 
 35 a0d146ed 2005-07-12 devnull 	USED(v);
 36 a0d146ed 2005-07-12 devnull 	while(recv(c, &zcl) == 1){
 37 a0d146ed 2005-07-12 devnull 		if(zcl.lump == nil)
 38 a0d146ed 2005-07-12 devnull 			break;
 39 a0d146ed 2005-07-12 devnull 		if(vtwrite(z, zcl.cl.info.score, zcl.cl.info.type, zcl.lump->data, zcl.cl.info.uncsize) < 0)
 40 a0d146ed 2005-07-12 devnull 			sysfatal("failed writing clump %llud: %r", zcl.aa);
 41 a0d146ed 2005-07-12 devnull 		freezblock(zcl.lump);
 42 a0d146ed 2005-07-12 devnull 	}
 43 a0d146ed 2005-07-12 devnull 	/*
 44 a0d146ed 2005-07-12 devnull 	 * All the send threads try to exit right when
 45 a0d146ed 2005-07-12 devnull 	 * threadmain is calling threadexitsall.  
 46 a0d146ed 2005-07-12 devnull 	 * Either libthread or the Linux NPTL pthreads library
 47 a0d146ed 2005-07-12 devnull 	 * can't handle this condition (I suspect NPTL but have
 48 a0d146ed 2005-07-12 devnull 	 * not confirmed this) and we get a seg fault in exit.
 49 a0d146ed 2005-07-12 devnull 	 * I spent a day tracking this down with no success,
 50 a0d146ed 2005-07-12 devnull 	 * so we're going to work around it instead by just
 51 a0d146ed 2005-07-12 devnull 	 * sitting here and waiting for the threadexitsall to
 52 a0d146ed 2005-07-12 devnull 	 * take effect.
 53 a0d146ed 2005-07-12 devnull 	 */
 54 a0d146ed 2005-07-12 devnull 	qlock(&godot);
 55 a0d146ed 2005-07-12 devnull }
 56 a0d146ed 2005-07-12 devnull 
 57 a0d146ed 2005-07-12 devnull static void
 58 a0d146ed 2005-07-12 devnull rdarena(Arena *arena, u64int offset)
 59 a0d146ed 2005-07-12 devnull {
 60 a0d146ed 2005-07-12 devnull 	u64int a, aa, e;
 61 a0d146ed 2005-07-12 devnull 	u32int magic;
 62 a0d146ed 2005-07-12 devnull 	Clump cl;
 63 a0d146ed 2005-07-12 devnull 	uchar score[VtScoreSize];
 64 a0d146ed 2005-07-12 devnull 	ZBlock *lump;
 65 a0d146ed 2005-07-12 devnull 	ZClump zcl;
 66 a0d146ed 2005-07-12 devnull 
 67 a0d146ed 2005-07-12 devnull 	fprint(2, "wrarena: copying %s to venti\n", arena->name);
 68 a0d146ed 2005-07-12 devnull 	printarena(2, arena);
 69 a0d146ed 2005-07-12 devnull 
 70 a0d146ed 2005-07-12 devnull 	a = arena->base;
 71 a0d146ed 2005-07-12 devnull 	e = arena->base + arena->size;
 72 a0d146ed 2005-07-12 devnull 	if(offset != ~(u64int)0) {
 73 a0d146ed 2005-07-12 devnull 		if(offset >= e-a)
 74 a0d146ed 2005-07-12 devnull 			sysfatal("bad offset %llud >= %llud\n",
 75 a0d146ed 2005-07-12 devnull 				offset, e-a);
 76 a0d146ed 2005-07-12 devnull 		aa = offset;
 77 a0d146ed 2005-07-12 devnull 	} else
 78 a0d146ed 2005-07-12 devnull 		aa = 0;
 79 a0d146ed 2005-07-12 devnull 
 80 a0d146ed 2005-07-12 devnull 	if(maxwrites != 0)
 81 a0d146ed 2005-07-12 devnull 	for(; aa < e; aa += ClumpSize+cl.info.size) {
 82 a0d146ed 2005-07-12 devnull 		magic = clumpmagic(arena, aa);
 83 a0d146ed 2005-07-12 devnull 		if(magic == ClumpFreeMagic)
 84 a0d146ed 2005-07-12 devnull 			break;
 85 a0d146ed 2005-07-12 devnull 		if(magic != arena->clumpmagic) {
 86 a0d146ed 2005-07-12 devnull 		//	fprint(2, "illegal clump magic number %#8.8ux offset %llud\n",
 87 a0d146ed 2005-07-12 devnull 		//		magic, aa);
 88 a0d146ed 2005-07-12 devnull 			break;
 89 a0d146ed 2005-07-12 devnull 		}
 90 a0d146ed 2005-07-12 devnull 		lump = loadclump(arena, aa, 0, &cl, score, 0);
 91 a0d146ed 2005-07-12 devnull 		if(lump == nil) {
 92 a0d146ed 2005-07-12 devnull 			fprint(2, "clump %llud failed to read: %r\n", aa);
 93 a0d146ed 2005-07-12 devnull 			break;
 94 a0d146ed 2005-07-12 devnull 		}
 95 a0d146ed 2005-07-12 devnull 		if(!fast && cl.info.type != VtCorruptType) {
 96 a0d146ed 2005-07-12 devnull 			scoremem(score, lump->data, cl.info.uncsize);
 97 a0d146ed 2005-07-12 devnull 			if(scorecmp(cl.info.score, score) != 0) {
 98 a0d146ed 2005-07-12 devnull 				fprint(2, "clump %llud has mismatched score\n", aa);
 99 a0d146ed 2005-07-12 devnull 				break;
100 a0d146ed 2005-07-12 devnull 			}
101 a0d146ed 2005-07-12 devnull 			if(vttypevalid(cl.info.type) < 0) {
102 a0d146ed 2005-07-12 devnull 				fprint(2, "clump %llud has bad type %d\n", aa, cl.info.type);
103 a0d146ed 2005-07-12 devnull 				break;
104 a0d146ed 2005-07-12 devnull 			}
105 a0d146ed 2005-07-12 devnull 		}
106 a0d146ed 2005-07-12 devnull 		if(z && cl.info.type != VtCorruptType){
107 a0d146ed 2005-07-12 devnull 			zcl.cl = cl;
108 a0d146ed 2005-07-12 devnull 			zcl.lump = lump;
109 a0d146ed 2005-07-12 devnull 			zcl.aa = aa;
110 a0d146ed 2005-07-12 devnull 			send(c, &zcl);
111 a0d146ed 2005-07-12 devnull 		}else
112 a0d146ed 2005-07-12 devnull 			freezblock(lump);
113 a0d146ed 2005-07-12 devnull 		if(maxwrites>0 && --maxwrites == 0)
114 a0d146ed 2005-07-12 devnull 			break;
115 a0d146ed 2005-07-12 devnull 	}
116 a0d146ed 2005-07-12 devnull 	if(haveaoffset)
117 a0d146ed 2005-07-12 devnull 		print("end offset %llud\n", aa);
118 a0d146ed 2005-07-12 devnull }
119 a0d146ed 2005-07-12 devnull 
120 a0d146ed 2005-07-12 devnull void
121 a0d146ed 2005-07-12 devnull threadmain(int argc, char *argv[])
122 a0d146ed 2005-07-12 devnull {
123 a0d146ed 2005-07-12 devnull 	int i;
124 a0d146ed 2005-07-12 devnull 	char *file;
125 a0d146ed 2005-07-12 devnull 	Arena *arena;
126 a0d146ed 2005-07-12 devnull 	u64int offset, aoffset;
127 a0d146ed 2005-07-12 devnull 	Part *part;
128 a0d146ed 2005-07-12 devnull 	Dir *d;
129 a0d146ed 2005-07-12 devnull 	uchar buf[8192];
130 a0d146ed 2005-07-12 devnull 	ArenaHead head;
131 a0d146ed 2005-07-12 devnull 	ZClump zerocl;
132 a0d146ed 2005-07-12 devnull 
133 a0d146ed 2005-07-12 devnull 	qlock(&godot);
134 a0d146ed 2005-07-12 devnull 	aoffset = 0;
135 a0d146ed 2005-07-12 devnull 	ARGBEGIN{
136 a0d146ed 2005-07-12 devnull 	case 'f':
137 a0d146ed 2005-07-12 devnull 		fast = 1;
138 a0d146ed 2005-07-12 devnull 		ventidoublechecksha1 = 0;
139 a0d146ed 2005-07-12 devnull 		break;
140 a0d146ed 2005-07-12 devnull 	case 'h':
141 a0d146ed 2005-07-12 devnull 		host = EARGF(usage());
142 a0d146ed 2005-07-12 devnull 		break;
143 a0d146ed 2005-07-12 devnull 	case 'o':
144 a0d146ed 2005-07-12 devnull 		haveaoffset = 1;
145 a0d146ed 2005-07-12 devnull 		aoffset = strtoull(EARGF(usage()), 0, 0);
146 a0d146ed 2005-07-12 devnull 		break;
147 a0d146ed 2005-07-12 devnull 	case 'M':
148 a0d146ed 2005-07-12 devnull 		maxwrites = atoi(EARGF(usage()));
149 a0d146ed 2005-07-12 devnull 		break;
150 a0d146ed 2005-07-12 devnull 	default:
151 a0d146ed 2005-07-12 devnull 		usage();
152 a0d146ed 2005-07-12 devnull 		break;
153 a0d146ed 2005-07-12 devnull 	}ARGEND
154 a0d146ed 2005-07-12 devnull 
155 a0d146ed 2005-07-12 devnull 	offset = ~(u64int)0;
156 a0d146ed 2005-07-12 devnull 	switch(argc) {
157 a0d146ed 2005-07-12 devnull 	default:
158 a0d146ed 2005-07-12 devnull 		usage();
159 a0d146ed 2005-07-12 devnull 	case 2:
160 a0d146ed 2005-07-12 devnull 		offset = strtoull(argv[1], 0, 0);
161 a0d146ed 2005-07-12 devnull 		/* fall through */
162 a0d146ed 2005-07-12 devnull 	case 1:
163 a0d146ed 2005-07-12 devnull 		file = argv[0];
164 a0d146ed 2005-07-12 devnull 	}
165 a0d146ed 2005-07-12 devnull 
166 a0d146ed 2005-07-12 devnull 	fmtinstall('V', vtscorefmt);
167 a0d146ed 2005-07-12 devnull 
168 a0d146ed 2005-07-12 devnull 	statsinit();
169 a0d146ed 2005-07-12 devnull 
170 a0d146ed 2005-07-12 devnull 	if((d = dirstat(file)) == nil)
171 a0d146ed 2005-07-12 devnull 		sysfatal("can't stat file %s: %r", file);
172 a0d146ed 2005-07-12 devnull 
173 a0d146ed 2005-07-12 devnull 	part = initpart(file, OREAD);
174 a0d146ed 2005-07-12 devnull 	if(part == nil)
175 a0d146ed 2005-07-12 devnull 		sysfatal("can't open file %s: %r", file);
176 a0d146ed 2005-07-12 devnull 	if(readpart(part, aoffset, buf, sizeof buf) < 0)
177 a0d146ed 2005-07-12 devnull 		sysfatal("can't read file %s: %r", file);
178 a0d146ed 2005-07-12 devnull 
179 a0d146ed 2005-07-12 devnull 	if(unpackarenahead(&head, buf) < 0)
180 a0d146ed 2005-07-12 devnull 		sysfatal("corrupted arena header: %r");
181 a0d146ed 2005-07-12 devnull 
182 a0d146ed 2005-07-12 devnull 	if(aoffset+head.size > d->length)
183 a0d146ed 2005-07-12 devnull 		sysfatal("arena is truncated: want %llud bytes have %llud\n",
184 a0d146ed 2005-07-12 devnull 			head.size, d->length);
185 a0d146ed 2005-07-12 devnull 
186 a0d146ed 2005-07-12 devnull 	partblocksize(part, head.blocksize);
187 a0d146ed 2005-07-12 devnull 	initdcache(8 * MaxDiskBlock);
188 a0d146ed 2005-07-12 devnull 
189 a0d146ed 2005-07-12 devnull 	arena = initarena(part, aoffset, head.size, head.blocksize);
190 a0d146ed 2005-07-12 devnull 	if(arena == nil)
191 a0d146ed 2005-07-12 devnull 		sysfatal("initarena: %r");
192 a0d146ed 2005-07-12 devnull 
193 23fb2edb 2005-07-24 devnull 	z = nil;
194 23fb2edb 2005-07-24 devnull 	if(host==nil || strcmp(host, "/dev/null") != 0){
195 a0d146ed 2005-07-12 devnull 		z = vtdial(host);
196 a0d146ed 2005-07-12 devnull 		if(z == nil)
197 a0d146ed 2005-07-12 devnull 			sysfatal("could not connect to server: %r");
198 a0d146ed 2005-07-12 devnull 		if(vtconnect(z) < 0)
199 a0d146ed 2005-07-12 devnull 			sysfatal("vtconnect: %r");
200 23fb2edb 2005-07-24 devnull 	}
201 a0d146ed 2005-07-12 devnull 	
202 a0d146ed 2005-07-12 devnull 	c = chancreate(sizeof(ZClump), 0);
203 a0d146ed 2005-07-12 devnull 	for(i=0; i<12; i++)
204 a0d146ed 2005-07-12 devnull 		vtproc(vtsendthread, nil);
205 a0d146ed 2005-07-12 devnull 
206 a0d146ed 2005-07-12 devnull 	rdarena(arena, offset);
207 a0d146ed 2005-07-12 devnull 		if(vtsync(z) < 0)
208 a0d146ed 2005-07-12 devnull 			sysfatal("executing sync: %r");
209 a0d146ed 2005-07-12 devnull 
210 a0d146ed 2005-07-12 devnull 	memset(&zerocl, 0, sizeof zerocl);
211 a0d146ed 2005-07-12 devnull 	for(i=0; i<12; i++)
212 a0d146ed 2005-07-12 devnull 		send(c, &zerocl);
213 a0d146ed 2005-07-12 devnull 	if(z){
214 a0d146ed 2005-07-12 devnull 		vthangup(z);
215 a0d146ed 2005-07-12 devnull 	}
216 a0d146ed 2005-07-12 devnull 	threadexitsall(0);
217 a0d146ed 2005-07-12 devnull }