| rsc | 7a4ee46 | 2003-11-23 17:54:58 +0000 | [diff] [blame] | 1 | #include "stdinc.h" |
| 2 | #include "dat.h" |
| 3 | #include "fns.h" |
| 4 | |
| 5 | char *host; |
| 6 | int readonly = 1; /* for part.c */ |
| 7 | |
| 8 | void |
| 9 | usage(void) |
| 10 | { |
| 11 | fprint(2, "usage: wrarena [-h host] arenafile [offset]\n"); |
| 12 | threadexitsall("usage"); |
| 13 | } |
| 14 | |
| 15 | static void |
| 16 | rdarena(VtConn *z, Arena *arena, u64int offset) |
| 17 | { |
| 18 | u64int a, aa, e; |
| 19 | u32int magic; |
| 20 | Clump cl; |
| 21 | uchar score[VtScoreSize]; |
| 22 | ZBlock *lump; |
| 23 | |
| 24 | fprint(2, "copying %s to venti\n", arena->name); |
| 25 | printarena(2, arena); |
| 26 | |
| 27 | a = arena->base; |
| 28 | e = arena->base + arena->size; |
| 29 | if(offset != ~(u64int)0) { |
| 30 | if(offset >= e-a) |
| 31 | sysfatal("bad offset %llud >= %llud\n", |
| 32 | offset, e-a); |
| 33 | aa = offset; |
| 34 | } else |
| 35 | aa = 0; |
| 36 | |
| 37 | for(; aa < e; aa += ClumpSize+cl.info.size) { |
| 38 | magic = clumpmagic(arena, aa); |
| 39 | if(magic == ClumpFreeMagic) |
| 40 | break; |
| 41 | if(magic != ClumpMagic) { |
| 42 | fprint(2, "illegal clump magic number %#8.8ux offset %llud\n", |
| 43 | magic, aa); |
| 44 | break; |
| 45 | } |
| 46 | lump = loadclump(arena, aa, 0, &cl, score, 0); |
| 47 | if(lump == nil) { |
| 48 | fprint(2, "clump %llud failed to read: %r\n", aa); |
| 49 | break; |
| 50 | } |
| 51 | if(cl.info.type != VtTypeCorrupt) { |
| 52 | scoremem(score, lump->data, cl.info.uncsize); |
| 53 | if(scorecmp(cl.info.score, score) != 0) { |
| 54 | fprint(2, "clump %llud has mismatched score\n", aa); |
| 55 | break; |
| 56 | } |
| 57 | if(vttypevalid(cl.info.type) < 0) { |
| 58 | fprint(2, "clump %llud has bad type %d\n", aa, cl.info.type); |
| 59 | break; |
| 60 | } |
| 61 | } |
| 62 | if(z && vtwrite(z, score, cl.info.type, lump->data, cl.info.uncsize) < 0) |
| 63 | sysfatal("failed writing clump %llud: %r", aa); |
| 64 | freezblock(lump); |
| 65 | } |
| 66 | if(z && vtsync(z) < 0) |
| 67 | sysfatal("failed executing sync: %r"); |
| 68 | |
| 69 | print("end offset %llud\n", aa); |
| 70 | } |
| 71 | |
| 72 | void |
| 73 | threadmain(int argc, char *argv[]) |
| 74 | { |
| 75 | char *file; |
| 76 | VtConn *z; |
| 77 | Arena *arena; |
| 78 | u64int offset, aoffset; |
| 79 | Part *part; |
| 80 | Dir *d; |
| 81 | uchar buf[8192]; |
| 82 | ArenaHead head; |
| 83 | |
| 84 | aoffset = 0; |
| 85 | ARGBEGIN{ |
| 86 | case 'h': |
| 87 | host = EARGF(usage()); |
| 88 | break; |
| 89 | case 'o': |
| 90 | aoffset = strtoull(EARGF(usage()), 0, 0); |
| 91 | break; |
| 92 | default: |
| 93 | usage(); |
| 94 | break; |
| 95 | }ARGEND |
| 96 | |
| 97 | offset = ~(u64int)0; |
| 98 | switch(argc) { |
| 99 | default: |
| 100 | usage(); |
| 101 | case 2: |
| 102 | offset = strtoull(argv[1], 0, 0); |
| 103 | /* fall through */ |
| 104 | case 1: |
| 105 | file = argv[0]; |
| 106 | } |
| 107 | |
| 108 | |
| 109 | fmtinstall('V', vtscorefmt); |
| 110 | |
| 111 | statsinit(); |
| 112 | |
| 113 | if((d = dirstat(file)) == nil) |
| 114 | sysfatal("can't stat file %s: %r", file); |
| 115 | |
| 116 | part = initpart(file, 0); |
| 117 | if(part == nil) |
| 118 | sysfatal("can't open file %s: %r", file); |
| 119 | if(readpart(part, aoffset, buf, sizeof buf) < 0) |
| 120 | sysfatal("can't read file %s: %r", file); |
| 121 | |
| 122 | if(unpackarenahead(&head, buf) < 0) |
| 123 | sysfatal("corrupted arena header: %r"); |
| 124 | |
| 125 | if(aoffset+head.size > d->length) |
| 126 | sysfatal("arena is truncated: want %llud bytes have %llud\n", |
| 127 | head.size, d->length); |
| 128 | |
| 129 | partblocksize(part, head.blocksize); |
| 130 | initdcache(8 * MaxDiskBlock); |
| 131 | |
| 132 | arena = initarena(part, aoffset, head.size, head.blocksize); |
| 133 | if(arena == nil) |
| 134 | sysfatal("initarena: %r"); |
| 135 | |
| 136 | if(host && strcmp(host, "/dev/null") != 0){ |
| 137 | z = vtdial(host); |
| 138 | if(z == nil) |
| 139 | sysfatal("could not connect to server: %r"); |
| 140 | if(vtconnect(z) < 0) |
| 141 | sysfatal("vtconnect: %r"); |
| 142 | }else |
| 143 | z = nil; |
| 144 | |
| 145 | rdarena(z, arena, offset); |
| 146 | vthangup(z); |
| 147 | threadexitsall(0); |
| 148 | } |
