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authorVenkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>2010-06-03 15:16:59 -0700
committerEric Van Hensbergen <ericvh@gmail.com>2010-08-02 14:28:25 -0500
commit652df9a7fd03cb47a3f663f0c08a2bd086505e9b (patch)
treeaf90ae0762a8770e660b4cbb23f7e9225cd5dba7
parent09d34ee5f93b2e53b64ffba27bc18731e31154e1 (diff)
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>
-rw-r--r--include/net/9p/9p.h2
-rw-r--r--include/net/9p/client.h1
-rw-r--r--net/9p/client.c19
3 files changed, 22 insertions, 0 deletions
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index 7f64d72f6c6..5985c0f83db 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,
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index afdc385152f..e36f11650e9 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -226,6 +226,7 @@ struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
int p9_client_open(struct p9_fid *fid, int mode);
int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
char *extension);
+int p9_client_link(struct p9_fid *fid, struct p9_fid *oldfid, char *newname);
int p9_client_clunk(struct p9_fid *fid);
int p9_client_remove(struct p9_fid *fid);
int p9_client_read(struct p9_fid *fid, char *data, char __user *udata,
diff --git a/net/9p/client.c b/net/9p/client.c
index b2f70ec889c..ad1c4489ab4 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -1095,6 +1095,25 @@ error:
}
EXPORT_SYMBOL(p9_client_fcreate);
+int p9_client_link(struct p9_fid *dfid, struct p9_fid *oldfid, char *newname)
+{
+ struct p9_client *clnt;
+ struct p9_req_t *req;
+
+ P9_DPRINTK(P9_DEBUG_9P, ">>> TLINK dfid %d oldfid %d newname %s\n",
+ dfid->fid, oldfid->fid, newname);
+ clnt = dfid->clnt;
+ req = p9_client_rpc(clnt, P9_TLINK, "dds", dfid->fid, oldfid->fid,
+ newname);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
+
+ P9_DPRINTK(P9_DEBUG_9P, "<<< RLINK\n");
+ p9_free_req(clnt, req);
+ return 0;
+}
+EXPORT_SYMBOL(p9_client_link);
+
int p9_client_clunk(struct p9_fid *fid)
{
int err;