1 #include "stdinc.h"
2 #include "dat.h"
3 #include "fns.h"
4 #include <bio.h>
5 
6 Biobuf bout;
7 
8 static void
9 pie(IEntry *ie)
10 {
11 	Bprint(&bout, "%22lld %V %3d %5d\n",
12 		ie->ia.addr, ie->score, ie->ia.type, ie->ia.size);
13 }
14 
15 void
16 usage(void)
17 {
18 	fprint(2, "usage: printindex [-B blockcachesize] config [isectname...]\n");
19 	threadexitsall(0);
20 }
21 
22 Config conf;
23 
24 int
25 shoulddump(char *name, int argc, char **argv)
26 {
27 	int i;
28 
29 	if(argc == 0)
30 		return 1;
31 	for(i=0; i<argc; i++)
32 		if(strcmp(name, argv[i]) == 0)
33 			return 1;
34 	return 0;
35 }
36 
37 void
38 dumpisect(ISect *is)
39 {
40 	int j;
41 	uchar *buf;
42 	u32int i;
43 	u64int off;
44 	IBucket ib;
45 	IEntry ie;
46 
47 	buf = emalloc(is->blocksize);
48 	for(i=0; i<is->blocks; i++){
49 		off = is->blockbase+(u64int)is->blocksize*i;
50 		if(readpart(is->part, off, buf, is->blocksize) < 0)
51 			fprint(2, "read %s at 0x%llux: %r\n", is->part->name, off);
52 		else{
53 			unpackibucket(&ib, buf, is->bucketmagic);
54 			for(j=0; j<ib.n; j++){
55 				unpackientry(&ie, &ib.data[j*IEntrySize]);
56 				pie(&ie);
57 			}
58 		}
59 	}
60 }
61 
62 void
63 threadmain(int argc, char *argv[])
64 {
65 	int i;
66 	Index *ix;
67 	u32int bcmem;
68 
69 	bcmem = 0;
70 	ARGBEGIN{
71 	case 'B':
72 		bcmem = unittoull(ARGF());
73 		break;
74 	default:
75 		usage();
76 		break;
77 	}ARGEND
78 
79 	if(argc < 1)
80 		usage();
81 
82 	fmtinstall('H', encodefmt);
83 
84 	if(initventi(argv[0], &conf) < 0)
85 		sysfatal("can't init venti: %r");
86 
87 	if(bcmem < maxblocksize * (mainindex->narenas + mainindex->nsects * 4 + 16))
88 		bcmem = maxblocksize * (mainindex->narenas + mainindex->nsects * 4 + 16);
89 	if(0) fprint(2, "initialize %d bytes of disk block cache\n", bcmem);
90 	initdcache(bcmem);
91 
92 	ix = mainindex;
93 	Binit(&bout, 1, OWRITE);
94 	for(i=0; i<ix->nsects; i++)
95 		if(shoulddump(ix->sects[i]->name, argc-1, argv+1))
96 			dumpisect(ix->sects[i]);
97 	Bterm(&bout);
98 	threadexitsall(0);
99 }