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SCSI_REPORT_OPCODE(9) SCSI mid layer SCSI_REPORT_OPCODE(9)

NAME

scsi_report_opcode - Find out if a given command opcode is supported

SYNOPSIS

int scsi_report_opcode(struct scsi_device * sdev, unsigned char * buffer, unsigned int len, unsigned char opcode);

ARGUMENTS

struct scsi_device * sdev
scsi device to query

unsigned char * buffer

scratch buffer (must be at least 20 bytes long)

unsigned int len

length of buffer

unsigned char opcode

opcode for command to look up

DESCRIPTION

Uses the REPORT SUPPORTED OPERATION CODES to look up the given opcode. Returns -EINVAL if RSOC fails, 0 if the command opcode is unsupported and 1 if the device claims to support the command.

AUTHORS

James Bottomley <James.Bottomley@hansenpartnership.com>
Author.

Rob Landley <rob@landley.net>

Author.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12