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-rw-r--r--hw/s390-virtio-bus.c4
-rw-r--r--hw/s390-virtio-bus.h1
-rw-r--r--hw/virtio-blk.c29
-rw-r--r--hw/virtio-blk.h2
-rw-r--r--hw/virtio-pci.c4
-rw-r--r--hw/virtio-pci.h1
-rw-r--r--hw/virtio.h3
7 files changed, 31 insertions, 13 deletions
diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c
index d4a12f7531..2bf4821a11 100644
--- a/hw/s390-virtio-bus.c
+++ b/hw/s390-virtio-bus.c
@@ -128,7 +128,8 @@ static int s390_virtio_blk_init(VirtIOS390Device *dev)
{
VirtIODevice *vdev;
- vdev = virtio_blk_init((DeviceState *)dev, &dev->block);
+ vdev = virtio_blk_init((DeviceState *)dev, &dev->block,
+ &dev->block_serial);
if (!vdev) {
return -1;
}
@@ -355,6 +356,7 @@ static VirtIOS390DeviceInfo s390_virtio_blk = {
.qdev.size = sizeof(VirtIOS390Device),
.qdev.props = (Property[]) {
DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, block),
+ DEFINE_PROP_STRING("serial", VirtIOS390Device, block_serial),
DEFINE_PROP_END_OF_LIST(),
},
};
diff --git a/hw/s390-virtio-bus.h b/hw/s390-virtio-bus.h
index 0c412d08e1..f1bece738b 100644
--- a/hw/s390-virtio-bus.h
+++ b/hw/s390-virtio-bus.h
@@ -42,6 +42,7 @@ typedef struct VirtIOS390Device {
uint8_t feat_len;
VirtIODevice *vdev;
BlockConf block;
+ char *block_serial;
NICConf nic;
uint32_t host_features;
virtio_serial_conf serial;
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 91e0394af9..6471ac85ab 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -28,8 +28,8 @@ typedef struct VirtIOBlock
void *rq;
QEMUBH *bh;
BlockConf *conf;
+ char *serial;
unsigned short sector_mask;
- char sn[BLOCK_SERIAL_STRLEN];
DeviceState *qdev;
} VirtIOBlock;
@@ -362,8 +362,13 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
} else if (type & VIRTIO_BLK_T_GET_ID) {
VirtIOBlock *s = req->dev;
- memcpy(req->elem.in_sg[0].iov_base, s->sn,
- MIN(req->elem.in_sg[0].iov_len, sizeof(s->sn)));
+ /*
+ * NB: per existing s/n string convention the string is
+ * terminated by '\0' only when shorter than buffer.
+ */
+ strncpy(req->elem.in_sg[0].iov_base,
+ s->serial ? s->serial : "",
+ MIN(req->elem.in_sg[0].iov_len, VIRTIO_BLK_ID_BYTES));
virtio_blk_req_complete(req, VIRTIO_BLK_S_OK);
} else if (type & VIRTIO_BLK_T_OUT) {
qemu_iovec_init_external(&req->qiov, &req->elem.out_sg[1],
@@ -531,7 +536,8 @@ static void virtio_blk_change_cb(void *opaque, int reason)
}
}
-VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf)
+VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
+ char **serial)
{
VirtIOBlock *s;
int cylinders, heads, secs;
@@ -547,6 +553,14 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf)
return NULL;
}
+ if (!*serial) {
+ /* try to fall back to value set with legacy -drive serial=... */
+ dinfo = drive_get_by_blockdev(conf->bs);
+ if (*dinfo->serial) {
+ *serial = strdup(dinfo->serial);
+ }
+ }
+
s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
sizeof(struct virtio_blk_config),
sizeof(VirtIOBlock));
@@ -556,16 +570,11 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf)
s->vdev.reset = virtio_blk_reset;
s->bs = conf->bs;
s->conf = conf;
+ s->serial = *serial;
s->rq = NULL;
s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
bdrv_guess_geometry(s->bs, &cylinders, &heads, &secs);
- /* NB: per existing s/n string convention the string is terminated
- * by '\0' only when less than sizeof (s->sn)
- */
- dinfo = drive_get_by_blockdev(s->bs);
- strncpy(s->sn, dinfo->serial, sizeof (s->sn));
-
s->vq = virtio_add_queue(&s->vdev, 128, virtio_blk_handle_output);
qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index fff46da7db..5645d2bf3c 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -34,6 +34,8 @@
#define VIRTIO_BLK_F_WCACHE 9 /* write cache enabled */
#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
+#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
+
struct virtio_blk_config
{
uint64_t capacity;
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index b3e7ba5d12..d685243728 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -700,7 +700,8 @@ static int virtio_blk_init_pci(PCIDevice *pci_dev)
proxy->class_code != PCI_CLASS_STORAGE_OTHER)
proxy->class_code = PCI_CLASS_STORAGE_SCSI;
- vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block);
+ vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block,
+ &proxy->block_serial);
if (!vdev) {
return -1;
}
@@ -805,6 +806,7 @@ static PCIDeviceInfo virtio_info[] = {
.qdev.props = (Property[]) {
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, block),
+ DEFINE_PROP_STRING("serial", VirtIOPCIProxy, block_serial),
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h
index b5189172de..1f0de5684d 100644
--- a/hw/virtio-pci.h
+++ b/hw/virtio-pci.h
@@ -26,6 +26,7 @@ typedef struct {
uint32_t class_code;
uint32_t nvectors;
BlockConf block;
+ char *block_serial;
NICConf nic;
uint32_t host_features;
#ifdef CONFIG_LINUX
diff --git a/hw/virtio.h b/hw/virtio.h
index 69e6bb1a4e..0fd0bb0ac5 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -197,7 +197,8 @@ void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
void *opaque);
/* Base devices. */
-VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf);
+VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf,
+ char **serial);
struct virtio_net_conf;
VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf,
struct virtio_net_conf *net);
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-26 10:41:27 +0000