9p: Define and implement TLINK for 9P2000.L

This patch adds a helper function to get the dentry from inode and
uses it in creating a Hardlink

SYNOPSIS

size[4] Tlink tag[2] dfid[4] oldfid[4] newpath[s]

size[4] Rlink tag[2]

DESCRIPTION

Create a link 'newpath' in directory pointed by dfid linking to oldfid path.

[sripathik@in.ibm.com : p9_client_link should not free req structure
if p9_client_rpc has returned an error.]

Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index 7f64d72f6c61..5985c0f83db3 100644
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -139,6 +139,8 @@ enum p9_msg_t {
         P9_RSETATTR,
         P9_TREADDIR = 40,
         P9_RREADDIR,
+        P9_TLINK = 70,
+        P9_RLINK,
         P9_TVERSION = 100,
         P9_RVERSION,
         P9_TAUTH = 102,