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util/uuid: Add UUID_STR_LEN definition

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qemu_uuid_unparse() includes a trailing NUL when writing the uuid
string and the buffer size should be UUID_FMT_LEN + 1 bytes. Add a
define for this size and use it where required.

Cc: Fam Zheng <fam@euphon.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: "Denis V. Lunev" <den@openvz.org>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Cédric Le Goater 2023-10-26 09:06:34 +02:00
parent ba7d12eb8c
commit 721da0396c
8 changed files with 10 additions and 9 deletions
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4
hw/hyperv/vmbus.c
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@ -2271,7 +2271,7 @@ static void vmbus_dev_realize(DeviceState *dev, Error **errp)
VMBus *vmbus = VMBUS(qdev_get_parent_bus(dev));
BusChild *child;
Error *err = NULL;
char idstr[UUID_FMT_LEN + 1];
char idstr[UUID_STR_LEN];
assert(!qemu_uuid_is_null(&vdev->instanceid));
@ -2467,7 +2467,7 @@ static char *vmbus_get_dev_path(DeviceState *dev)
static char *vmbus_get_fw_dev_path(DeviceState *dev)
{
VMBusDevice *vdev = VMBUS_DEVICE(dev);
char uuid[UUID_FMT_LEN + 1];
char uuid[UUID_STR_LEN];
qemu_uuid_unparse(&vdev->instanceid, uuid);
return g_strdup_printf("%s@%s", qdev_fw_name(dev), uuid);