[Qemu-devel] [PATCH 2/2] atapi: Report correct errors on guest eject request

[Amit Shah <amit.shah@redhat.com>]

Table 629 of the MMC-5 spec mentions two different error conditions when
a CDROM eject is requested: a) while a disc is inserted and b) while a
disc is not inserted.

Ensure we return the appropriate error for the present condition of the
drive and disc status.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
---
 hw/ide/core.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/hw/ide/core.c b/hw/ide/core.c
index 8958ff2..b8b78bb 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1464,7 +1464,7 @@ static void ide_atapi_cmd(IDEState *s)
         break;
     case GPCMD_START_STOP_UNIT:
         {
-            int start, eject, err = 0;
+            int start, eject, sense, err = 0;
             start = packet[4] & 1;
             eject = (packet[4] >> 1) & 1;
 
@@ -1477,7 +1477,11 @@ static void ide_atapi_cmd(IDEState *s)
                 ide_atapi_cmd_ok(s);
                 break;
             case -EBUSY:
-                ide_atapi_cmd_error(s, SENSE_NOT_READY,
+                sense = SENSE_NOT_READY;
+                if (bdrv_is_inserted(s->bs)) {
+                    sense = SENSE_ILLEGAL_REQUEST;
+                }
+                ide_atapi_cmd_error(s, sense,
                                     ASC_MEDIA_REMOVAL_PREVENTED);
                 break;
             default:
-- 
1.7.4.2