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[Qemu-devel] [PATCH] 9pfs: Stat response from server offset by 2 bytes


From: David Gibson
Subject: [Qemu-devel] [PATCH] 9pfs: Stat response from server offset by 2 bytes
Date: Tue, 8 Nov 2011 16:55:17 +1100

From: Timothy Rule <address@hidden>

The 9P spec states that for the stat message the "stat[n]" structure shall be
encoded at offset 7 in the 9P message (see ยง13.9 message Rstat).

The existing code is encoding a 2 byte value (hard coded 0 value) at
offset 7 of the 9P message, and then follows with the "stat[n]" structure
at offset 9 of the 9P message.

This patch removes the encoding of the 2 byte value which has the effect
of moving the "stat[n]" structure from offset 9 to offset 7 in the 9P
message Rstat.

Signed-off-by: Timothy Rule <address@hidden>
Signed-off-by: David Gibson <address@hidden>
---
 hw/9pfs/virtio-9p.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c
index 01cf337..35d8851 100644
--- a/hw/9pfs/virtio-9p.c
+++ b/hw/9pfs/virtio-9p.c
@@ -1279,7 +1279,7 @@ static void v9fs_stat(void *opaque)
     if (err < 0) {
         goto out;
     }
-    offset += pdu_marshal(pdu, offset, "wS", 0, &v9stat);
+    offset += pdu_marshal(pdu, offset, "S", &v9stat);
     err = offset;
     trace_v9fs_stat_return(pdu->tag, pdu->id, v9stat.mode,
                            v9stat.atime, v9stat.mtime, v9stat.length);
-- 
1.7.7.1




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