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SCSI_MODE_SENSE(9) SCSI mid layer SCSI_MODE_SENSE(9)

NAME

scsi_mode_sense - issue a mode sense, falling back from 10 to six bytes if necessary.

SYNOPSIS

int scsi_mode_sense(struct scsi_device * sdev, int dbd, int modepage, unsigned char * buffer, int len, int timeout, int retries, struct scsi_mode_data * data, struct scsi_sense_hdr * sshdr);

ARGUMENTS

struct scsi_device * sdev

SCSI device to be queried

int dbd

set if mode sense will allow block descriptors to be returned

int modepage

mode page being requested

unsigned char * buffer

request buffer (may not be smaller than eight bytes)

int len

length of request buffer.

int timeout

command timeout

int retries

number of retries before failing

struct scsi_mode_data * data

returns a structure abstracting the mode header data

struct scsi_sense_hdr * sshdr

place to put sense data (or NULL if no sense to be collected). must be SCSI_SENSE_BUFFERSIZE big.

DESCRIPTION

Returns zero if unsuccessful, or the header offset (either 4 or 8 depending on whether a six or ten byte command was issued) if successful.

AUTHORS

James Bottomley <James.Bottomley@hansenpartnership.com>

Author.

Rob Landley <rob@landley.net>

Author.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12