iSCSI: We need to support SG_IO also from iscsi_ioctl()
We need to support SG_IO from the synchronous iscsi_ioctl() since scsi-block uses this to do an INQ to the device to discover its properties This patch makes scsi-block work with iscsi. Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -628,9 +628,17 @@ static BlockDriverAIOCB *iscsi_aio_ioctl(BlockDriverState *bs,
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return &acb->common;
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}
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static void ioctl_cb(void *opaque, int status)
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{
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int *p_status = opaque;
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*p_status = status;
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}
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static int iscsi_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
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{
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IscsiLun *iscsilun = bs->opaque;
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int status;
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switch (req) {
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case SG_GET_VERSION_NUM:
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@ -639,6 +647,15 @@ static int iscsi_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
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case SG_GET_SCSI_ID:
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((struct sg_scsi_id *)buf)->scsi_type = iscsilun->type;
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break;
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case SG_IO:
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status = -EINPROGRESS;
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iscsi_aio_ioctl(bs, req, buf, ioctl_cb, &status);
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while (status == -EINPROGRESS) {
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qemu_aio_wait();
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}
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return 0;
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default:
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return -1;
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}
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