On Thu, 28 Apr 2005, R. Bernstein wrote:
> In cdparanoia on GNU/Linux there either this brilliant idea or hack to
> determine if a drive is ATAPI or SCSI by looking at the device major
It's a hack ;)
With a good ATAPI transport method who cares if the device
is ATAPI or SCSI - it's all MMC{2,3} commands. Why would the
application need to know (or care ;)) what the physical connector/wires
used to transport the commands is?
> and minor number.Is this also appropriate or valid
> on on other OS's (namely FreeBSD, Solaris, BSDI, and OSX)?
It's not valid for BSDI that I know of - removable devices were called
"sr" (/dev/rsr0c) for example without regard to the SCSI'ness. Thus
a SCSI CD/DVD drive would be 'sr0' but so would an ATAPI CD drive.
OSX seems to just call things "disk1", "disk2", ... in order of
appearance - thus the builtin DVD burner (which is ATAPI) showed up
as 'disk2' while the IEEE1394 external burner popped up as 'disk5' .
Don't know about FreeBSD. I do have 5.3 installed on a disk and could
take a look one of these days. I haven't been tempted by Solaris in
eons - no idea what it's doing these days.
Cheers,
Steven Schultz
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