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SubjectSCSI over USB showstopper bug?
Hi,

it looks as if SG_GET_RESERVED_SIZE & SG_SET_RESERVED_SIZE
are not in interaction with the underlying SCSI transport.

Programs like readcd and cdda2wav that try to get very large SCSI
transfer buffers get a confirmation for nearly any SCSI transfer size
but later when readcd/cdda2wav try to transfer data with an
actual SCSI command, they fail with ENOMEM.

Correct fix: let sg.c make a callback to the underlying SCSI transport
and let it get a confirmation tfor the buffer size.

Quick and dirty fix: reduce the maximum allowed DMA size to the smallest
max DMA size of all SCSI transports.

Jörg

--
EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
js@cs.tu-berlin.de (uni)
schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
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