9p: add 9P2000.L rename operation

I made a V2 of this patch on top of my patches for VFS switches.
All the changes were due to change in some offsets.

rename - change name of file or directory

size[4] Trename tag[2] fid[4] newdirfid[4] name[s]
size[4] Rrename tag[2]

The rename message is used to change the name of a file, possibly moving it
to a new directory.  The 9P wstat message can only rename a file within the
same directory.

Signed-off-by: Jim Garlick <garlick@llnl.gov>
Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

2 files changed, 14 insertions, 0 deletions

diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index 59300dc22dd0..156c26bb8bd7 100644
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -88,6 +88,8 @@ do { \
  * enum p9_msg_t - 9P message types
  * @P9_TSTATFS: file system status request
  * @P9_RSTATFS: file system status response
+ * @P9_TRENAME: rename request
+ * @P9_RRENAME: rename response
  * @P9_TVERSION: version handshake request
  * @P9_RVERSION: version handshake response
  * @P9_TAUTH: request to establish authentication channel
@@ -129,6 +131,8 @@ do { \
 enum p9_msg_t {
         P9_TSTATFS = 8,
         P9_RSTATFS,
+        P9_TRENAME = 20,
+        P9_RRENAME,
         P9_TVERSION = 100,
         P9_RVERSION,
         P9_TAUTH = 102,
@@ -370,6 +374,15 @@ struct p9_rstatfs {
         u32 namelen;
 };
 
+struct p9_trename {
+        u32 fid;
+        u32 newdirfid;
+        struct p9_str name;
+};
+
+struct p9_rrename {
+};
+
 struct p9_tversion {
         u32 msize;
         struct p9_str version;
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index f83c0d99e592..7dd3ed85c782 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -196,6 +196,7 @@ struct p9_fid {
 };
 
 int p9_client_statfs(struct p9_fid *fid, struct p9_rstatfs *sb);
+int p9_client_rename(struct p9_fid *fid, struct p9_fid *newdirfid, char *name);
 int p9_client_version(struct p9_client *);
 struct p9_client *p9_client_create(const char *dev_name, char *options);
 void p9_client_destroy(struct p9_client *clnt);