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scsi-disk: Cleaning up around tray open state

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Even if tray is not open, it can be empty (blk_is_inserted() == false).
Handle both cases correctly by replacing the s->tray_open checks with
blk_is_available(), which is an AND of the two.

Also simplify successive checks of them into blk_is_available(), in a
couple cases.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1473848224-24809-2-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Fam Zheng 2016-09-14 18:17:03 +08:00 committed by Paolo Bonzini
parent 083d012a38
commit cd723b8560
1 changed files with 8 additions and 14 deletions
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22
hw/scsi/scsi-disk.c
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@ -396,7 +396,7 @@ static void scsi_read_data(SCSIRequest *req)
return;
}
if (s->tray_open) {
if (!blk_is_available(req->dev->conf.blk)) {
scsi_read_complete(r, -ENOMEDIUM);
return;
}
@ -519,7 +519,7 @@ static void scsi_write_data(SCSIRequest *req)
scsi_write_complete_noio(r, 0);
return;
}
if (s->tray_open) {
if (!blk_is_available(req->dev->conf.blk)) {
scsi_write_complete_noio(r, -ENOMEDIUM);
return;
}
@ -792,10 +792,7 @@ static inline bool media_is_dvd(SCSIDiskState *s)
if (s->qdev.type != TYPE_ROM) {
return false;
}
if (!blk_is_inserted(s->qdev.conf.blk)) {
return false;
}
if (s->tray_open) {
if (!blk_is_available(s->qdev.conf.blk)) {
return false;
}
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
@ -808,10 +805,7 @@ static inline bool media_is_cd(SCSIDiskState *s)
if (s->qdev.type != TYPE_ROM) {
return false;
}
if (!blk_is_inserted(s->qdev.conf.blk)) {
return false;
}
if (s->tray_open) {
if (!blk_is_available(s->qdev.conf.blk)) {
return false;
}
blk_get_geometry(s->qdev.conf.blk, &nb_sectors);
@ -875,7 +869,7 @@ static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r,
}
if (format != 0xff) {
if (s->tray_open || !blk_is_inserted(s->qdev.conf.blk)) {
if (!blk_is_available(s->qdev.conf.blk)) {
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
return -1;
}
@ -1857,7 +1851,7 @@ static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf)
break;
default:
if (s->tray_open || !blk_is_inserted(s->qdev.conf.blk)) {
if (!blk_is_available(s->qdev.conf.blk)) {
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
return 0;
}
@ -1886,7 +1880,7 @@ static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf)
memset(outbuf, 0, r->buflen);
switch (req->cmd.buf[0]) {
case TEST_UNIT_READY:
assert(!s->tray_open && blk_is_inserted(s->qdev.conf.blk));
assert(blk_is_available(s->qdev.conf.blk));
break;
case INQUIRY:
buflen = scsi_disk_emulate_inquiry(req, outbuf);
@ -2126,7 +2120,7 @@ static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
command = buf[0];
if (s->tray_open || !blk_is_inserted(s->qdev.conf.blk)) {
if (!blk_is_available(s->qdev.conf.blk)) {
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
return 0;
}