> 64 65 66 67 68 69 6a 6b
> 6c 6d 6e 6f 70 71 72 73
> 74 75 76 6b 00 00 00 00
> 20 00 00 cd 22 80 01 b8
tailmagic corrupted?
we got:
defghijklmnopqrstuv | k\0\0\0\0 \0\0\cd\22\80\01\b8
we expect:
1234567890abcdefghijklmnopqrstuv | xyz
OverflowCheck is 32 bytes, so xyz are not included in the buffer.
i dont think that the zmagic got corrupted.
cinap
--- Begin Message ---
> found it!
>
> that is "defghijklmnopqrstuv..." instead of the expected "1234567890abc..."
>
> 13 bytes!
>
> b->data is incremented (and b->len decremented)13 bytes to skip the
> "venti config" magic in readifile() ifile.c:39.
> and freezblock() alculates the position of the zmagic by b->data + b->_size.
>
> maybe add a b->_data in ZBuffer or fix ifile.c?
>
> cinap
this might not fix everything as the tail magic was corrupted, too.
- erik
n/sources/plan9//sys/src/cmd/venti/srv/ifile.c:36,43 - ifile.c:36,44
freepart(p);
return -1;
}
- b->data += m;
- b->len -= m;
+ memmove(b->data, b->data+m, 8192-m);
+ memset(b->data+8192-m, 0, 8192-m);
+
z = memchr(b->data, 0, b->len);
if(z)
b->len = z - b->data;
--- End Message ---
