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scsi: Improve scsi_sense_to_errno 

Tweak the errno mapping to return more accurate/appropriate values.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170821141008.19383-3-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Fam Zheng 2017-08-21 22:10:06 +08:00 committed by Paolo Bonzini
parent 2875135807
commit 5efa3c0448
1 changed files with 12 additions and 4 deletions
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16
util/scsi.c
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@ -18,13 +18,16 @@
int scsi_sense_to_errno(int key, int asc, int ascq)
{
switch (key) {
case 0x02: /* NOT READY */
return EBUSY;
case 0x07: /* DATA PROTECTION */
return EACCES;
case 0x00: /* NO SENSE */
case 0x01: /* RECOVERED ERROR */
case 0x06: /* UNIT ATTENTION */
/* These sense keys are not errors */
return 0;
case 0x0b: /* COMMAND ABORTED */
return ECANCELED;
case 0x02: /* NOT READY */
case 0x05: /* ILLEGAL REQUEST */
case 0x07: /* DATA PROTECTION */
/* Parse ASCQ */
break;
default:
@ -37,6 +40,7 @@ int scsi_sense_to_errno(int key, int asc, int ascq)
case 0x2600: /* INVALID FIELD IN PARAMETER LIST */
return EINVAL;
case 0x2100: /* LBA OUT OF RANGE */
case 0x2707: /* SPACE ALLOC FAILED */
return ENOSPC;
case 0x2500: /* LOGICAL UNIT NOT SUPPORTED */
return ENOTSUP;
@ -46,6 +50,10 @@ int scsi_sense_to_errno(int key, int asc, int ascq)
return ENOMEDIUM;
case 0x2700: /* WRITE PROTECTED */
return EACCES;
case 0x0401: /* NOT READY, IN PROGRESS OF BECOMING READY */
return EAGAIN;
case 0x0402: /* NOT READY, INITIALIZING COMMAND REQUIRED */
return ENOTCONN;
default:
return EIO;
}