SG3UTILS SGETCONFIG(1M)
NAME
sggetconfig - sends a SCSI GET CONFIGURATION command
SYNOPSIS
sggetconfig [--brief] [--current] [--help] [--hex]
[--inner-hex] [--list] [--raw] [--rt=RT] [--starting=FC]
[--verbose] [--version] DEVICE
DESCRIPTION
Sends a SCSI GET CONFIGURATION command to DEVICE and decodes
the response. The response includes the features and pro-
files of the device. Typically these devices are CD, DVD,
HD-DVD and BD players that may (but not necessarily) have
media in them. These devices may well be connected via
ATAPI, USB or IE 1394 transports. In such cases they are
"SCSI" devices only in the sense that they use the
"Multi-Media command" set (MC). MC is a specialized SCSI
command set whose definition can be found at
http:/www.t10.org .
This utility is based on the MC-4 and MC-5 draft stan-
dards. See section 5 on "Features and Profile for
MultiMedia devices" for more information on specific
feature parameters and profiles. The manufacturer's product
manual may also be useful.
Since modern DVD and BD writers support many features and
profiles, the decoded output from this utility can be large.
There are various ways to cut down the output. If the
--brief option is used only the feature names are shown and
the feature parameters are not decoded. Alternatively if
only one feature is of interest then this combination of
options is appropriate: "--rt=2 --starting=FC". Another pos-
sibility is to show only the features that are relevant to
the media in the drive (i.e. "current") with the "--rt=1"
option.
OPTIONS
Arguments to long options are mandatory for short options as
well.
-b, --brief
show the feature names but don't decode the parameters
of those features. When used with --list outputs known
feature names but not known profile names.
-c, --current
output features marked as current. This option is
equivalent to '--rt=1'.
-h, --help
output the usage message then exit.
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-H, --hex
output the response in hex (don't decode response).
-i, --inner-hex
decode to the feature name level then output each
feature's data in hex.
-l, --list
list all known feature and profile names. Ignore the
device name (if given). Simply lists the feature names
and profiles (followed by their hex values) that this
utility knows about. If --brief is also given then only
feature names are listed.
-r, --rt=RT
where RT is the field of that name in the GET CONFI-
GURATION cdb. Allowable values are 0, 1, 2, or 3 . The
command's action also depends on the value given to the
--starting=FC option. The default value is 0. When RT
is 0 then all features, regardless of currency, are
returned (whose feature code is greater than or equal
to FC given to --starting=). When RT is 1 then all
current features are returned (whose feature code is
greater than or equal to FC). When RT is 2 then the
feature whose feature code is equal to FC, if any, is
returned. When RT is 3 the response is reserved (prob-
ably yields an "illegal field in cdb" error). To sim-
plify the meanings of the RT values are:
0 : all features, current on not
1 : only current features
2 : only feature whose code is FC
3 : reserved
-R, --raw
output response in binary (to stdout). Note that the
short form is -R unlike most other utilities in this
package that use -r for this action.
-s, --starting=FC
where FC is the feature code value. This option works
closely with the --rt=RT option. The FC value is in the
range 0 to 65535 (0xffff) inclusive. Its default value
is 0. A value prefixed with "0x" (or a trailing 'h') is
interpreted as hexadecimal.
-v, --verbose
increase the level of verbosity, (i.e. debug output).
-V, --version
print the version string and then exit.
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NOTES
There are multiple versions of the MC (draft) standards:
MC [1997], MC-2 [2000], MC-3 [2002], MC-4 and MC-5.
The first three are now ANSI INCITS standards with the year
they became standards shown in brackets. The draft immedi-
ately prior to standardization can be found at
http:/www.t10.org . In the initial MC standard there was
no GET CONFIGURATION command and the relevant information
was obtained from the "CD capabilities and mechanical status
mode page" (mode page 0x2a). It was later renamed the "M
capabilities and mechanical status mode page" and has been
made obsolete in MC-4 and MC-5. The GET CONFIGURATION com-
mand was introduced in MC-2 and has become a replacement
for that mode page. New features such as support for "BD"
(blue ray) media type can only be found by using the GET
CONFIGURATION command. Hence older CD players may not sup-
port the GET CONFIGURATION command in which case the "M
capabilities ..." mode page can be checked with sdparm(1M),
sginfo(1M) or sgmodes(1M).
In the 2.4 series of Linux kernels the DEVICE must be a SCSI
generic (sg) device. In the 2.6 series block devices can
also be specified. For example "sggetconfig /dev/hdc" will
work in the 2.6 series kernels as long as /dev/hdc is an
ATAPI device. In the 2.6 series external DVD writers
attached via USB could be queried with "sggetconfig
/dev/scd1" for example.
EXIT STATUS
The exit status of sggetconfig is 0 when it is successful.
Otherwise see the sg3utils(1M) man page.
AUTHORS
Written by Douglas Gilbert.
REPORTING BUGS
Report bugs to .
COPYRIGHT
Copyright O 2004-2008 Douglas Gilbert
This software is distributed under a FreeBSD license. There
is NO warranty; not even for MERCHANTABILITY or FITNES FOR
A PARTICULAR PURPOSE.
SEE ALSO
sginfo(1M), sgmodes(1M), sginq(1M), sgprevent(1M),
sgstart(1M) [all in sg3utils], sdparm(1M)
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
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SG3UTILS SGETCONFIG(1M)
ATRIBUTE TYPE ATRIBUTE VALUE
Availability SUNWsg3utilsu
Interface Stability Committed
NOTES
Source for sg3utils is available on http:/opensolaris.org.
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