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#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);
}
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