1 files changed, 23 insertions, 0 deletions

diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index 12803da95dc4..e9baa6ebb1dd 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);
@@ -913,6 +927,15 @@ 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;
+}
+
 static int
 svcauth_gss_set_client(struct svc_rqst *rqstp)
 {