diff options
| -rw-r--r-- | hw/scsi-disk.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index 2e7a57b..eb5b5a8 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -5,6 +5,12 @@ * Based on code by Fabrice Bellard * * Written by Paul Brook + * Modifications: + * 2009-Dec-12 Artyom Tarasenko : implemented stamdard inquiry for the case + * when the allocation length of CDB is smaller + * than 36. + * 2009-Oct-13 Artyom Tarasenko : implemented the block descriptor in the + * MODE SENSE response. * * This code is licenced under the LGPL. * @@ -406,11 +412,6 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) return -1; } - if (req->cmd.xfer < 36) { - BADF("Error: Inquiry (STANDARD) buffer size %zd " - "is less than 36 (TODO: only 5 required)\n", req->cmd.xfer); - } - buflen = req->cmd.xfer; if (buflen > SCSI_MAX_INQUIRY_LEN) buflen = SCSI_MAX_INQUIRY_LEN; @@ -436,7 +437,15 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) Some later commands are also implemented. */ outbuf[2] = 3; outbuf[3] = 2; /* Format 2 */ - outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */ + + if (buflen > 36) { + outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */ + } else { + /* If the allocation length of CDB is too small, + the additional length is not adjusted */ + outbuf[4] = 36 - 5; + } + /* Sync data transfer and TCQ. */ outbuf[7] = 0x10 | (req->bus->tcq ? 0x02 : 0); return buflen; |