NAME¶
sg_read_buffer - send a SCSI READ BUFFER command
SYNOPSIS¶
sg_read_buffer [
--help] [
--hex] [
--id=ID]
[
--length=LEN] [
--mode=MO] [
--offset=OFF] [
--raw]
[
--verbose] [
--version]
DEVICE
DESCRIPTION¶
Sends a SCSI READ BUFFER command to the
DEVICE, and if there is a
response either decodes it, prints it in hexadecimal or sends it in binary to
stdout. If a response is received for a "descriptor" mode then, in
the absence of
--hex and
--raw, it is decoded. Response for
non-descriptor modes are output in hexadecimal unless the
--raw option
is given.
OPTIONS¶
Arguments to long options are mandatory for short options as well.
- -h, --help
- output the usage message then exit. If used multiple times
also prints the mode names and their acronyms.
- -H, --hex
- output the response in hexadecimal. When given twice the
response is output in hex with the corresponding representation in ASCII
to the right of each line.
- -i, --id=ID
- this option sets the buffer id field in the cdb. ID
is a value between 0 (default) and 255 inclusive.
- -l, --length=LEN
- where LEN is the length, in bytes, that is placed in
the "allocation length" field in the cdb. The default value is 4
(bytes). The device may respond with less bytes.
- -m, --mode=MO
- this option sets the mode field in the cdb. MO is a
value between 0 (default) and 31 inclusive. Alternatively an abbreviation
can be given. To list the available mode abbreviations use an invalid one
(e.g. '--mode=xxx'). As an example, to fetch the read buffer descriptor
give '--mode=desc' .
- -o, --offset=OFF
- this option sets the buffer offset field in the cdb.
OFF is a value between 0 (default) and 2**24-1 . It is a byte
offset.
- -r, --raw
- if a response is received then it is sent in binary to
stdout.
- -v, --verbose
- increase the level of verbosity, (i.e. debug output).
- -V, --version
- print the version string and then exit.
NOTES¶
All numbers given with options are assumed to be decimal. Alternatively
numerical values can be given in hexadecimal preceded by either "0x"
or "0X" (or has a trailing "h" or "H").
EXIT STATUS¶
The exit status of sg_read_buffer is 0 when it is successful. Otherwise see the
sg3_utils(8) man page.
AUTHORS¶
Written by Luben Tuikov and Douglas Gilbert.
REPORTING BUGS¶
Report bugs to <dgilbert at interlog dot com>.
COPYRIGHT¶
Copyright © 2006-2011 Luben Tuikov and Douglas Gilbert
This software is distributed under a FreeBSD license. There is NO warranty; not
even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO¶
sg_write_buffer(sg3_utils)