2 files changed, 34 insertions, 8 deletions

diff --git a/net/9p/client.c b/net/9p/client.c
index e161012..d83cc12 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -146,7 +146,7 @@ void p9_client_disconnect(struct p9_client *clnt)
 EXPORT_SYMBOL(p9_client_disconnect);
 
 struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
-	char *uname, char *aname)
+	char *uname, u32 n_uname, char *aname)
 {
 	int err;
 	struct p9_fcall *tc, *rc;
@@ -165,7 +165,8 @@ struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
 		goto error;
 	}
 
-	tc = p9_create_tattach(fid->fid, afid?afid->fid:P9_NOFID, uname, aname);
+	tc = p9_create_tattach(fid->fid, afid?afid->fid:P9_NOFID, uname, aname,
+		n_uname, clnt->dotu);
 	if (IS_ERR(tc)) {
 		err = PTR_ERR(tc);
 		tc = NULL;
@@ -190,7 +191,8 @@ error:
 }
 EXPORT_SYMBOL(p9_client_attach);
 
-struct p9_fid *p9_client_auth(struct p9_client *clnt, char *uname, char *aname)
+struct p9_fid *p9_client_auth(struct p9_client *clnt, char *uname,
+	u32 n_uname, char *aname)
 {
 	int err;
 	struct p9_fcall *tc, *rc;
@@ -209,7 +211,7 @@ struct p9_fid *p9_client_auth(struct p9_client *clnt, char *uname, char *aname)
 		goto error;
 	}
 
-	tc = p9_create_tauth(fid->fid, uname, aname);
+	tc = p9_create_tauth(fid->fid, uname, aname, n_uname, clnt->dotu);
 	if (IS_ERR(tc)) {
 		err = PTR_ERR(tc);
 		tc = NULL;
diff --git a/net/9p/conv.c b/net/9p/conv.c
index d979d95..aa2aa98 100644
--- a/net/9p/conv.c
+++ b/net/9p/conv.c
@@ -547,7 +547,8 @@ error:
 }
 EXPORT_SYMBOL(p9_create_tversion);
 
-struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname)
+struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname,
+	u32 n_uname, int dotu)
 {
 	int size;
 	struct p9_fcall *fc;
@@ -555,7 +556,16 @@ struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname)
 	struct cbuf *bufp = &buffer;
 
 	/* afid[4] uname[s] aname[s] */
-	size = 4 + 2 + strlen(uname) + 2 + strlen(aname);
+	size = 4 + 2 + 2;
+	if (uname)
+		size += strlen(uname);
+
+	if (aname)
+		size += strlen(aname);
+
+	if (dotu)
+		size += 4;	/* n_uname */
+
 	fc = p9_create_common(bufp, size, P9_TAUTH);
 	if (IS_ERR(fc))
 		goto error;
@@ -563,6 +573,8 @@ struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname)
 	p9_put_int32(bufp, afid, &fc->params.tauth.afid);
 	p9_put_str(bufp, uname, &fc->params.tauth.uname);
 	p9_put_str(bufp, aname, &fc->params.tauth.aname);
+	if (dotu)
+		p9_put_int32(bufp, n_uname, &fc->params.tauth.n_uname);
 
 	if (buf_check_overflow(bufp)) {
 		kfree(fc);
@@ -574,7 +586,8 @@ error:
 EXPORT_SYMBOL(p9_create_tauth);
 
 struct p9_fcall *
-p9_create_tattach(u32 fid, u32 afid, char *uname, char *aname)
+p9_create_tattach(u32 fid, u32 afid, char *uname, char *aname,
+	u32 n_uname, int dotu)
 {
 	int size;
 	struct p9_fcall *fc;
@@ -582,7 +595,16 @@ p9_create_tattach(u32 fid, u32 afid, char *uname, char *aname)
 	struct cbuf *bufp = &buffer;
 
 	/* fid[4] afid[4] uname[s] aname[s] */
-	size = 4 + 4 + 2 + strlen(uname) + 2 + strlen(aname);
+	size = 4 + 4 + 2 + 2;
+	if (uname)
+		size += strlen(uname);
+
+	if (aname)
+		size += strlen(aname);
+
+	if (dotu)
+		size += 4;	/* n_uname */
+
 	fc = p9_create_common(bufp, size, P9_TATTACH);
 	if (IS_ERR(fc))
 		goto error;
@@ -591,6 +613,8 @@ p9_create_tattach(u32 fid, u32 afid, char *uname, char *aname)
 	p9_put_int32(bufp, afid, &fc->params.tattach.afid);
 	p9_put_str(bufp, uname, &fc->params.tattach.uname);
 	p9_put_str(bufp, aname, &fc->params.tattach.aname);
+	if (dotu)
+		p9_put_int32(bufp, n_uname, &fc->params.tattach.n_uname);
 
 error:
 	return fc;