From: Li Qiang <liqiang6-s@360.cn>

Date: Tue, 1 Nov 2016 12:00:40 +0100

Subject: [PATCH] 9pfs: convert 'len/copied_len' field in V9fsXattr to the type

 of uint64_t

The 'len' in V9fsXattr comes from the 'size' argument in setxattr()

function in guest. The setxattr() function's declaration is this:

int setxattr(const char *path, const char *name,

             const void *value, size_t size, int flags);

and 'size' is treated as u64 in linux kernel client code:

int p9_client_xattrcreate(struct p9_fid *fid, const char *name,

                          u64 attr_size, int flags)

So the 'len' should have an type of 'uint64_t'.

The 'copied_len' in V9fsXattr is used to account for copied bytes, it

should also have an type of 'uint64_t'.

Suggested-by: Greg Kurz <groug@kaod.org>

Signed-off-by: Li Qiang <liqiang6-s@360.cn>

Reviewed-by: Greg Kurz <groug@kaod.org>

Signed-off-by: Greg Kurz <groug@kaod.org>

(cherry picked from commit 8495f9ad26d398f01e208a53f1a5152483a16084)

---

 hw/9pfs/9p.h | 4 ++--

 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/9pfs/9p.h b/hw/9pfs/9p.h

index 5750d67..4e3bc52 100644

--- a/hw/9pfs/9p.h

+++ b/hw/9pfs/9p.h

@@ -162,8 +162,8 @@ typedef struct V9fsConf

 typedef struct V9fsXattr

 {

-    int64_t copied_len;

-    int64_t len;

+    uint64_t copied_len;

+    uint64_t len;

     void *value;

     V9fsString name;

     int flags;