In message <[EMAIL PROTECTED]>, Bruce Evans writes: >On Wed, 9 Oct 2002, David O'Brien wrote: > >> Also SCSI CDROM's are now only mountable as /dev/cd0, not /dev/cd0a as >> before. I wonder how many others got hit by that. > >Apparently not as many as got hit by the block number scaling bug. I >guess most users only have atapi cdroms. This is a good change, but >needs time for conversion. > >The SCSI CDROM driver has some very nice new bugs apart from broken label >contents. I have noticed the following so far: >- b_pblkno seems to be unitialized. I think it is always 0, This affects > mainly disksort^Wbioq_disksort(). The driver used to use b_pblkno > internally and the scaling bug was introduced by replacing this by > b_blkno and fixed by scaling b_blkno to the value that b_pblkno > should be set to. >- block sizes and offsets that are not a multiple of the sector size are > now accepted, but don't work. E.g., dd with a block size of 1 byte > doesn't fail, but produces garbage. >- offsets beyond EOF are now accepted in software and are only rejected > in hardware. This spams the console with error messages and gives wrong > error handling (EIO; should be EOF (no error)).
Yeah, I have a patch sitting in my tree which I couldn't get to work, probably because the blocksize issue obscured it, I'll get to it one of these days. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
