nfsd4: implement minimal SP4_MACH_CRED

[cascardo/linux.git] / fs / nfsd / nfs4xdr.c

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 170ea7e..3126210 100644 (file)
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3321,6 +3321,14 @@ nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_w
        return nfserr;
 }
 
+static const u32 nfs4_minimal_spo_must_enforce[2] = {
+       [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) |
+             1 << (OP_EXCHANGE_ID - 32) |
+             1 << (OP_CREATE_SESSION - 32) |
+             1 << (OP_DESTROY_SESSION - 32) |
+             1 << (OP_DESTROY_CLIENTID - 32)
+};
+
 static __be32
 nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr,
                         struct nfsd4_exchange_id *exid)
@@ -3359,6 +3367,20 @@ nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr,
        /* state_protect4_r. Currently only support SP4_NONE */
        BUG_ON(exid->spa_how != SP4_NONE);
        WRITE32(exid->spa_how);
+       switch (exid->spa_how) {
+       case SP4_NONE:
+               break;
+       case SP4_MACH_CRED:
+               /* spo_must_enforce bitmap: */
+               WRITE32(2);
+               WRITE32(nfs4_minimal_spo_must_enforce[0]);
+               WRITE32(nfs4_minimal_spo_must_enforce[1]);
+               /* empty spo_must_allow bitmap: */
+               WRITE32(0);
+               break;
+       default:
+               WARN_ON_ONCE(1);
+       }
 
        /* The server_owner struct */
        WRITE64(minor_id);      /* Minor id */