Merge remote branch 'kwolf/for-anthony' into staging

block-migration.c

@@ -238,7 +238,7 @@ static void init_blk_migration_it(void *opaque, BlockDriverState *bs)
 
     if (!bdrv_is_read_only(bs)) {
         sectors = bdrv_getlength(bs) >> BDRV_SECTOR_BITS;
-        if (sectors == 0) {
+        if (sectors <= 0) {
             return;
         }
 

hw/ide/core.c

@@ -2630,6 +2630,10 @@ int ide_init_drive(IDEState *s, BlockDriverState *bs,
         s->drive_kind = IDE_CD;
         bdrv_set_change_cb(bs, cdrom_change_cb, s);
     } else {
+        if (!bdrv_is_inserted(s->bs)) {
+            error_report("Device needs media, but drive is empty");
+            return -1;
+        }
         if (bdrv_is_read_only(bs)) {
             error_report("Can't use a read-only drive");
             return -1;

hw/scsi-disk.c

@@ -1059,6 +1059,11 @@ static int scsi_disk_initfn(SCSIDevice *dev)
     s->bs = s->qdev.conf.bs;
     is_cd = bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM;
 
+    if (!is_cd && !bdrv_is_inserted(s->bs)) {
+        error_report("Device needs media, but drive is empty");
+        return -1;
+    }
+
     if (bdrv_get_on_error(s->bs, 1) != BLOCK_ERR_REPORT) {
         error_report("Device doesn't support drive option rerror");
         return -1;

hw/virtio-blk.c

@@ -12,6 +12,7 @@
  */
 
 #include <qemu-common.h>
+#include "qemu-error.h"
 #include "virtio-blk.h"
 #ifdef __linux__
 # include <scsi/sg.h>
@@ -490,6 +491,15 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf)
     static int virtio_blk_id;
     DriveInfo *dinfo;
 
+    if (!conf->bs) {
+        error_report("virtio-blk-pci: drive property not set");
+        return NULL;
+    }
+    if (!bdrv_is_inserted(conf->bs)) {
+        error_report("Device needs media, but drive is empty");
+        return NULL;
+    }
+
     s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
                                           sizeof(struct virtio_blk_config),
                                           sizeof(VirtIOBlock));

hw/virtio-pci.c

@@ -546,11 +546,10 @@ static int virtio_blk_init_pci(PCIDevice *pci_dev)
         proxy->class_code != PCI_CLASS_STORAGE_OTHER)
         proxy->class_code = PCI_CLASS_STORAGE_SCSI;
 
-    if (!proxy->block.bs) {
+    vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block);
-        error_report("virtio-blk-pci: drive property not set");
+    if (!vdev) {
         return -1;
     }
-    vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block);
     vdev->nvectors = proxy->nvectors;
     virtio_init_pci(proxy, vdev,
                     PCI_VENDOR_ID_REDHAT_QUMRANET,

qemu-img-cmds.hx

@@ -54,6 +54,6 @@ ETEXI
 DEF("resize", img_resize,
     "resize filename [+ | -]size")
 STEXI
-@item rebase @var{filename} [+ | -]@var{size}
+@item resize @var{filename} [+ | -]@var{size}
 @end table
 ETEXI