1 files changed, 26 insertions, 2 deletions

diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index 81ae3d62a0c..2278a50c644 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -332,6 +332,7 @@ struct rsc {
 	struct svc_cred		cred;
 	struct gss_svc_seq_data	seqdata;
 	struct gss_ctx		*mechctx;
+	char			*client_name;
 };
 
 static struct cache_head *rsc_table[RSC_HASHMAX];
@@ -346,6 +347,7 @@ static void rsc_free(struct rsc *rsci)
 		gss_delete_sec_context(&rsci->mechctx);
 	if (rsci->cred.cr_group_info)
 		put_group_info(rsci->cred.cr_group_info);
+	kfree(rsci->client_name);
 }
 
 static void rsc_put(struct kref *ref)
@@ -383,6 +385,7 @@ rsc_init(struct cache_head *cnew, struct cache_head *ctmp)
 	tmp->handle.data = NULL;
 	new->mechctx = NULL;
 	new->cred.cr_group_info = NULL;
+	new->client_name = NULL;
 }
 
 static void
@@ -397,6 +400,8 @@ update_rsc(struct cache_head *cnew, struct cache_head *ctmp)
 	spin_lock_init(&new->seqdata.sd_lock);
 	new->cred = tmp->cred;
 	tmp->cred.cr_group_info = NULL;
+	new->client_name = tmp->client_name;
+	tmp->client_name = NULL;
 }
 
 static struct cache_head *
@@ -486,6 +491,15 @@ static int rsc_parse(struct cache_detail *cd,
 		status = gss_import_sec_context(buf, len, gm, &rsci.mechctx);
 		if (status)
 			goto out;
+
+		/* get client name */
+		len = qword_get(&mesg, buf, mlen);
+		if (len > 0) {
+			rsci.client_name = kstrdup(buf, GFP_KERNEL);
+			if (!rsci.client_name)
+				goto out;
+		}
+
 	}
 	rsci.h.expiry_time = expiry;
 	rscp = rsc_update(&rsci, rscp);
@@ -746,7 +760,7 @@ u32 svcauth_gss_flavor(struct auth_domain *dom)
 	return gd->pseudoflavor;
 }
 
-EXPORT_SYMBOL(svcauth_gss_flavor);
+EXPORT_SYMBOL_GPL(svcauth_gss_flavor);
 
 int
 svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name)
@@ -780,7 +794,7 @@ out:
 	return stat;
 }
 
-EXPORT_SYMBOL(svcauth_gss_register_pseudoflavor);
+EXPORT_SYMBOL_GPL(svcauth_gss_register_pseudoflavor);
 
 static inline int
 read_u32_from_xdr_buf(struct xdr_buf *buf, int base, u32 *obj)
@@ -913,6 +927,16 @@ struct gss_svc_data {
 	struct rsc			*rsci;
 };
 
+char *svc_gss_principal(struct svc_rqst *rqstp)
+{
+	struct gss_svc_data *gd = (struct gss_svc_data *)rqstp->rq_auth_data;
+
+	if (gd && gd->rsci)
+		return gd->rsci->client_name;
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(svc_gss_principal);
+
 static int
 svcauth_gss_set_client(struct svc_rqst *rqstp)
 {