#include <u.h> #include <libc.h> #include <bio.h> #include <venti.h> #include <libsec.h> #include <thread.h> enum { // XXX What to do here? VtMaxLumpSize = 65535, }; VtConn *z; char *host; void usage(void) { fprint(2, "usage: venti/dump [-h host] score\n"); threadexitsall("usage"); } Biobuf bout; char spaces[256]; void dump(int indent, uchar *score, int type) { int i, n; uchar *buf; VtEntry e; VtRoot root; if(spaces[0] == 0) memset(spaces, ' ', sizeof spaces-1); buf = vtmallocz(VtMaxLumpSize); if(memcmp(score, vtzeroscore, VtScoreSize) == 0) n = 0; else n = vtread(z, score, type, buf, VtMaxLumpSize); if(n < 0){ Bprint(&bout, "%.*serror reading %V: %r\n", indent*4, spaces, score); goto out; } switch(type){ case VtRootType: if(vtrootunpack(&root, buf) < 0){ Bprint(&bout, "%.*serror unpacking root %V: %r\n", indent*4, spaces, score); goto out; } Bprint(&bout, "%.*s%V root name=%s type=%s prev=%V bsize=%ld\n", indent*4, spaces, score, root.name, root.type, root.prev, root.blocksize); dump(indent+1, root.score, VtDirType); break; case VtDirType: Bprint(&bout, "%.*s%V dir n=%d\n", indent*4, spaces, score, n); for(i=0; i*VtEntrySize<n; i++){ if(vtentryunpack(&e, buf, i) < 0){ Bprint(&bout, "%.*s%d: cannot unpack\n", indent+1, spaces, i); continue; } Bprint(&bout, "%.*s%d: gen=%#lux psize=%ld dsize=%ld type=%d flags=%#x size=%llud score=%V\n", (indent+1)*4, spaces, i, e.gen, e.psize, e.dsize, e.type, e.flags, e.size, e.score); dump(indent+2, e.score, e.type); } break; case VtDataType: Bprint(&bout, "%.*s%V data n=%d", indent*4, spaces, score, n); for(i=0; i<n; i++){ if(i%16 == 0) Bprint(&bout, "\n%.*s", (indent+1)*4, spaces); Bprint(&bout, " %02x", buf[i]); } Bprint(&bout, "\n"); break; default: if(type >= VtDirType) Bprint(&bout, "%.*s%V dir+%d\n", indent*4, spaces, score, type-VtDirType); else Bprint(&bout, "%.*s%V data+%d\n", indent*4, spaces, score, type-VtDirType); for(i=0; i<n; i+=VtScoreSize) dump(indent+1, buf+i, type-1); break; } out: free(buf); } void threadmain(int argc, char *argv[]) { int type, n; uchar score[VtScoreSize]; uchar *buf; char *prefix; fmtinstall('F', vtfcallfmt); fmtinstall('V', vtscorefmt); ARGBEGIN{ case 'h': host = EARGF(usage()); break; default: usage(); }ARGEND if(argc != 1) usage(); if(vtparsescore(argv[0], &prefix, score) < 0) sysfatal("could not parse score: %r"); buf = vtmallocz(VtMaxLumpSize); z = vtdial(host); if(z == nil) sysfatal("dialing venti: %r"); if(vtconnect(z) < 0) sysfatal("vtconnect src: %r"); for(type=0; type<VtMaxType; type++){ n = vtread(z, score, type, buf, VtMaxLumpSize); if(n >= 0) goto havetype; } sysfatal("cannot find block %V", score); havetype: Binit(&bout, 1, OWRITE); dump(0, score, type); Bflush(&bout); threadexitsall(nil); }