Patchwork [-V4,09/21] virtio-9p: Add P9_TVERSION support

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Submitter Aneesh Kumar K.V
Date April 9, 2010, 11:43 a.m.
Message ID <1270813404-23004-10-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
Download mbox | patch
Permalink /patch/49828/
State New
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Comments

Aneesh Kumar K.V - April 9, 2010, 11:43 a.m.
From: Anthony Liguori <aliguori@us.ibm.com>

Implement P9_TVERSION support.

[sripathik@in.ibm.com: Handle unknown 9P versions as per the standards]

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 hw/virtio-9p.c |   15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

Patch

diff --git a/hw/virtio-9p.c b/hw/virtio-9p.c
index 5dab1d3..ccc45a3 100644
--- a/hw/virtio-9p.c
+++ b/hw/virtio-9p.c
@@ -845,9 +845,20 @@  static void v9fs_dummy(V9fsState *s, V9fsPDU *pdu)
 
 static void v9fs_version(V9fsState *s, V9fsPDU *pdu)
 {
-    if (debug_9p_pdu) {
-        pprint_pdu(pdu);
+    int32_t msize;
+    V9fsString version;
+    size_t offset = 7;
+
+    pdu_unmarshal(pdu, offset, "ds", &msize, &version);
+
+    if (strcmp(version.data, "9P2000.u")) {
+        v9fs_string_sprintf(&version, "unknown");
     }
+
+    offset += pdu_marshal(pdu, offset, "ds", msize, &version);
+    complete_pdu(s, pdu, offset);
+
+    v9fs_string_free(&version);
 }
 
 static void v9fs_attach(V9fsState *s, V9fsPDU *pdu)