motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-02 07:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

scsi: explicitly list guest-recoverable sense codes

Browse source 
It's not really possible to fit all sense codes into errno codes,
especially in such a way that sense codes can be properly categorized as
either guest-recoverable or host-handled.  Create a new function that
checks for guest recoverable sense, then scsi_sense_buf_to_errno only
needs to be called for host handled sense codes.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2019-07-02 10:23:20 +02:00
parent d31347f5ff
commit bdf9613b7f
3 changed files with 46 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

43
scsi/utils.c
View file

@ -336,6 +336,38 @@ int scsi_convert_sense(uint8_t *in_buf, int in_len,
}
}
static bool scsi_sense_is_guest_recoverable(int key, int asc, int ascq)
{
switch (key) {
case NO_SENSE:
case RECOVERED_ERROR:
case UNIT_ATTENTION:
case ABORTED_COMMAND:
return true;
case NOT_READY:
case ILLEGAL_REQUEST:
case DATA_PROTECT:
/* Parse ASCQ */
break;
default:
return false;
}
switch ((asc << 8) | ascq) {
case 0x1a00: /* PARAMETER LIST LENGTH ERROR */
case 0x2000: /* INVALID OPERATION CODE */
case 0x2400: /* INVALID FIELD IN CDB */
case 0x2500: /* LOGICAL UNIT NOT SUPPORTED */
case 0x2600: /* INVALID FIELD IN PARAMETER LIST */
case 0x0401: /* NOT READY, IN PROGRESS OF BECOMING READY */
case 0x0402: /* NOT READY, INITIALIZING COMMAND REQUIRED */
return true;
default:
return false;
}
}
int scsi_sense_to_errno(int key, int asc, int ascq)
{
switch (key) {
@ -391,6 +423,17 @@ int scsi_sense_buf_to_errno(const uint8_t *in_buf, size_t in_len)
return scsi_sense_to_errno(sense.key, sense.asc, sense.ascq);
}
bool scsi_sense_buf_is_guest_recoverable(const uint8_t *in_buf, size_t in_len)
{
SCSISense sense;
if (in_len < 1) {
return false;
}
sense = scsi_parse_sense_buf(in_buf, in_len);
return scsi_sense_is_guest_recoverable(sense.key, sense.asc, sense.ascq);
}
const char *scsi_command_name(uint8_t cmd)
{
static const char *names[] = {