From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <3e90b031be3e4fc9eafb1eeadfb9f9e1@quanstro.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] venti woes with brand new install
From: erik quanstrom <quanstro@quanstro.net>
Date: Sat,  8 Sep 2007 12:49:30 -0400
In-Reply-To: <289299487ad8b104193a761eba3fe691@gmx.de>
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> 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;