Introduce the Xen 9pfs backend: add struct XenDevOps to register as a
Xen backend and add struct V9fsTransport to register as v9fs transport.
All functions are empty stubs for now.
Signed-off-by: Stefano Stabellini <stef...@aporeto.com>
CC: anthony.per...@citrix.com
CC: jgr...@suse.com
CC: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
CC: Greg Kurz <gr...@kaod.org>
---
hw/9pfs/xen-9p-backend.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 96 insertions(+)
create mode 100644 hw/9pfs/xen-9p-backend.c
diff --git a/hw/9pfs/xen-9p-backend.c b/hw/9pfs/xen-9p-backend.c
new file mode 100644
index 0000000..924fb64
--- /dev/null
+++ b/hw/9pfs/xen-9p-backend.c
@@ -0,0 +1,96 @@
+/*
+ * Xen 9p backend
+ *
+ * Copyright Aporeto 2017
+ *
+ * Authors:
+ * Stefano Stabellini <stef...@aporeto.com>
+ *
+ */
+
+#include "qemu/osdep.h"
+
+#include "hw/hw.h"
+#include "hw/9pfs/9p.h"
+#include "hw/xen/xen_backend.h"
+#include "xen_9pfs.h"
+#include "qemu/config-file.h"
+#include "fsdev/qemu-fsdev.h"
+
+struct Xen9pfsDev {
+ struct XenDevice xendev; /* must be first */
+};
+
+static ssize_t xen_9pfs_pdu_vmarshal(V9fsPDU *pdu,
+ size_t offset,
+ const char *fmt,
+ va_list ap)
+{
+ return 0;
+}
+
+static ssize_t xen_9pfs_pdu_vunmarshal(V9fsPDU *pdu,
+ size_t offset,
+ const char *fmt,
+ va_list ap)
+{
+ return 0;
+}
+
+static void xen_9pfs_init_out_iov_from_pdu(V9fsPDU *pdu,
+ struct iovec **piov,
+ unsigned int *pniov)
+{
+}
+
+static void xen_9pfs_init_in_iov_from_pdu(V9fsPDU *pdu,
+ struct iovec **piov,
+ unsigned int *pniov,
+ size_t size)
+{
+}
+
+static void xen_9pfs_push_and_notify(V9fsPDU *pdu)
+{
+}
+
+static const struct V9fsTransport xen_9p_transport = {
+ .pdu_vmarshal = xen_9pfs_pdu_vmarshal,
+ .pdu_vunmarshal = xen_9pfs_pdu_vunmarshal,
+ .init_in_iov_from_pdu = xen_9pfs_init_in_iov_from_pdu,
+ .init_out_iov_from_pdu = xen_9pfs_init_out_iov_from_pdu,
+ .push_and_notify = xen_9pfs_push_and_notify,
+};
+
+static int xen_9pfs_init(struct XenDevice *xendev)
+{
+ return 0;
+}
+
+static int xen_9pfs_free(struct XenDevice *xendev)
+{
+ return -1;
+}
+
+static int xen_9pfs_connect(struct XenDevice *xendev)
+{
+ return 0;
+}
+
+static void xen_9pfs_alloc(struct XenDevice *xendev)
+{
+}
+
+static void xen_9pfs_disconnect(struct XenDevice *xendev)
+{
+}
+
+struct XenDevOps xen_9pfs_ops = {
+ .size = sizeof(struct Xen9pfsDev),
+ .flags = DEVOPS_FLAG_NEED_GNTDEV,
+ .alloc = xen_9pfs_alloc,
+ .init = xen_9pfs_init,
+ .initialise = xen_9pfs_connect,
+ .disconnect = xen_9pfs_disconnect,
+ .free = xen_9pfs_free,
+};
--
1.9.1
