1 files changed, 29 insertions, 3 deletions

diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index c094583386fd..490697542fc2 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -743,6 +743,15 @@ find_gss_auth_domain(struct gss_ctx *ctx, u32 svc)
 
 static struct auth_ops svcauthops_gss;
 
+u32 svcauth_gss_flavor(struct auth_domain *dom)
+{
+        struct gss_domain *gd = container_of(dom, struct gss_domain, h);
+
+        return gd->pseudoflavor;
+}
+
+EXPORT_SYMBOL(svcauth_gss_flavor);
+
 int
 svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name)
 {
@@ -913,10 +922,23 @@ svcauth_gss_set_client(struct svc_rqst *rqstp)
         struct gss_svc_data *svcdata = rqstp->rq_auth_data;
         struct rsc *rsci = svcdata->rsci;
         struct rpc_gss_wire_cred *gc = &svcdata->clcred;
+        int stat;
 
-        rqstp->rq_client = find_gss_auth_domain(rsci->mechctx, gc->gc_svc);
-        if (rqstp->rq_client == NULL)
+        /*
+         * A gss export can be specified either by:
+         *      export  *(sec=krb5,rw)
+         * or by
+         *      export gss/krb5(rw)
+         * The latter is deprecated; but for backwards compatibility reasons
+         * the nfsd code will still fall back on trying it if the former
+         * doesn't work; so we try to make both available to nfsd, below.
+         */
+        rqstp->rq_gssclient = find_gss_auth_domain(rsci->mechctx, gc->gc_svc);
+        if (rqstp->rq_gssclient == NULL)
                 return SVC_DENIED;
+        stat = svcauth_unix_set_client(rqstp);
+        if (stat == SVC_DROP)
+                return stat;
         return SVC_OK;
 }
 
@@ -1088,7 +1110,6 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
                         svc_putnl(resv, GSS_SEQ_WIN);
                         if (svc_safe_putnetobj(resv, &rsip->out_token))
                                 goto drop;
-                        rqstp->rq_client = NULL;
                 }
                 goto complete;
         case RPC_GSS_PROC_DESTROY:
@@ -1131,6 +1152,8 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
                 }
                 svcdata->rsci = rsci;
                 cache_get(&rsci->h);
+                rqstp->rq_flavor = gss_svc_to_pseudoflavor(
+                                        rsci->mechctx->mech_type, gc->gc_svc);
                 ret = SVC_OK;
                 goto out;
         }
@@ -1317,6 +1340,9 @@ out_err:
         if (rqstp->rq_client)
                 auth_domain_put(rqstp->rq_client);
         rqstp->rq_client = NULL;
+        if (rqstp->rq_gssclient)
+                auth_domain_put(rqstp->rq_gssclient);
+        rqstp->rq_gssclient = NULL;
         if (rqstp->rq_cred.cr_group_info)
                 put_group_info(rqstp->rq_cred.cr_group_info);
         rqstp->rq_cred.cr_group_info = NULL;