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scsi: Rename linux-specific SG_ERR codes to generic SCSI_HOST error codes 

We really should make a distinction between legitimate sense codes
(ie if one is running against an emulated block device or for
pass-through sense codes), and the intermediate errors generated
during processing of the command, which really are not sense codes
but refer to some specific internal status. And this internal
state is not necessarily linux-specific, but rather can refer to
the qemu implementation itself.
So rename the linux-only SG_ERR codes to SCSI_HOST codes and make
them available generally.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Message-Id: <20201116184041.60465-5-hare@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
master
Hannes Reinecke 2020-11-16 19:40:38 +01:00 committed by Paolo Bonzini
parent f7544edcd3
commit 41af878b96
2 changed files with 19 additions and 10 deletions
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23
include/scsi/utils.h
View File

@ -16,6 +16,22 @@ enum SCSIXferMode {
SCSI_XFER_TO_DEV, /* WRITE, MODE_SELECT, ... */
};
enum SCSIHostStatus {
SCSI_HOST_OK,
SCSI_HOST_NO_LUN,
SCSI_HOST_BUSY,
SCSI_HOST_TIME_OUT,
SCSI_HOST_BAD_RESPONSE,
SCSI_HOST_ABORTED,
SCSI_HOST_ERROR = 0x07,
SCSI_HOST_RESET = 0x08,
SCSI_HOST_TRANSPORT_DISRUPTED = 0xe,
SCSI_HOST_TARGET_FAILURE = 0x10,
SCSI_HOST_RESERVATION_ERROR = 0x11,
SCSI_HOST_ALLOCATION_FAILURE = 0x12,
SCSI_HOST_MEDIUM_ERROR = 0x13,
};
typedef struct SCSICommand {
uint8_t buf[SCSI_CMD_BUF_SIZE];
int len;
@ -124,13 +140,6 @@ int scsi_cdb_length(uint8_t *buf);
#define SG_ERR_DRIVER_TIMEOUT 0x06
#define SG_ERR_DRIVER_SENSE 0x08
#define SG_ERR_DID_OK 0x00
#define SG_ERR_DID_NO_CONNECT 0x01
#define SG_ERR_DID_BUS_BUSY 0x02
#define SG_ERR_DID_TIME_OUT 0x03
#define SG_ERR_DRIVER_SENSE 0x08
int sg_io_sense_from_errno(int errno_value, struct sg_io_hdr *io_hdr,
SCSISense *sense);
#endif

6
scsi/utils.c
View File

@ -612,9 +612,9 @@ int sg_io_sense_from_errno(int errno_value, struct sg_io_hdr *io_hdr,
if (errno_value != 0) {
return scsi_sense_from_errno(errno_value, sense);
} else {
if (io_hdr->host_status == SG_ERR_DID_NO_CONNECT ||
io_hdr->host_status == SG_ERR_DID_BUS_BUSY ||
io_hdr->host_status == SG_ERR_DID_TIME_OUT ||
if (io_hdr->host_status == SCSI_HOST_NO_LUN ||
io_hdr->host_status == SCSI_HOST_BUSY ||
io_hdr->host_status == SCSI_HOST_TIME_OUT ||
(io_hdr->driver_status & SG_ERR_DRIVER_TIMEOUT)) {
return BUSY;
} else if (io_hdr->host_status) {