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scsi: provide general-purpose functions to manage sense data

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Extract the common parts of scsi_sense_buf_to_errno, scsi_convert_sense
and scsi_target_send_command's REQUEST SENSE handling into two new
functions scsi_parse_sense_buf and scsi_build_sense_buf.

Fix a bug in scsi_target_send_command along the way; the length was
written in buf[10] rather than buf[7].

Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixes: b07fbce634 ("scsi-bus: correct responses for INQUIRY and REQUEST SENSE")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2017-11-27 13:27:41 +01:00
parent 7299e1a411
commit f68d98b21f
3 changed files with 72 additions and 86 deletions
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3
include/scsi/utils.h
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@@ -31,6 +31,9 @@ typedef struct SCSISense {
} SCSISense;
int scsi_build_sense(uint8_t *buf, SCSISense sense);
SCSISense scsi_parse_sense_buf(const uint8_t *in_buf, int in_len);
int scsi_build_sense_buf(uint8_t *buf, size_t max_size, SCSISense sense,
bool fixed_sense);
/*
* Predefined sense codes