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scsi-disk: scsi-block device for scsi pass-through should not be removable
This patch adds a new SCSI_DISK_F_NO_REMOVABLE_DEVOPS feature. By this feature we can set that the scsi-block (scsi pass-through) device will still be removable from the guest side, but from monitor it cannot be removed. Cc: qemu-stable@nongnu.org Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -61,8 +61,9 @@ typedef struct SCSIDiskReq {
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BlockAcctCookie acct;
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} SCSIDiskReq;
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#define SCSI_DISK_F_REMOVABLE 0
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#define SCSI_DISK_F_DPOFUA 1
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#define SCSI_DISK_F_REMOVABLE 0
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#define SCSI_DISK_F_DPOFUA 1
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#define SCSI_DISK_F_NO_REMOVABLE_DEVOPS 2
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struct SCSIDiskState
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{
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@ -2110,7 +2111,8 @@ static int scsi_initfn(SCSIDevice *dev)
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return -1;
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}
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if (s->features & (1 << SCSI_DISK_F_REMOVABLE)) {
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if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) &&
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!(s->features & (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS))) {
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bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_removable_block_ops, s);
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} else {
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bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_block_ops, s);
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@ -2322,6 +2324,12 @@ static int scsi_block_initfn(SCSIDevice *dev)
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} else {
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s->qdev.blocksize = 512;
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}
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/* Makes the scsi-block device not removable by using HMP and QMP eject
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* command.
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*/
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s->features |= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS);
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return scsi_initfn(&s->qdev);
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}
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