rpcgss: krb5: miscellaneous cleanup

Miscellaneous cosmetic fixes.
Signed-off-by: NJ. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

net/sunrpc/auth_gss/gss_krb5_seal.c

@@ -108,17 +108,17 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text,
 	if (krb5_encrypt(ctx->seq, NULL, md5cksum.data,
 			  md5cksum.data, md5cksum.len))
 		return GSS_S_FAILURE;
-	memcpy(krb5_hdr + 16,
-	       md5cksum.data + md5cksum.len - KRB5_CKSUM_LENGTH,
+
+	memcpy(krb5_hdr + 16, md5cksum.data + md5cksum.len - KRB5_CKSUM_LENGTH,
 	       KRB5_CKSUM_LENGTH);
 
 	spin_lock(&krb5_seq_lock);
 	seq_send = ctx->seq_send++;
 	spin_unlock(&krb5_seq_lock);
 
-	if ((krb5_make_seq_num(ctx->seq, ctx->initiate ? 0 : 0xff,
-			       seq_send, krb5_hdr + 16, krb5_hdr + 8)))
+	if (krb5_make_seq_num(ctx->seq, ctx->initiate ? 0 : 0xff,
+			       ctx->seq_send, krb5_hdr + 16, krb5_hdr + 8))
 		return GSS_S_FAILURE;
 
-	return ((ctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE);
+	return (ctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE;
 }

net/sunrpc/auth_gss/gss_krb5_unseal.c

@@ -99,16 +99,14 @@ gss_verify_mic_kerberos(struct gss_ctx *gss_ctx,
 	/* XXX sanity-check bodysize?? */
 
 	signalg = ptr[0] + (ptr[1] << 8);
-	sealalg = ptr[2] + (ptr[3] << 8);
-
-	/* Sanity checks */
-
-	if ((ptr[4] != 0xff) || (ptr[5] != 0xff))
+	if (signalg != SGN_ALG_DES_MAC_MD5)
 		return GSS_S_DEFECTIVE_TOKEN;
 
-	if (sealalg != 0xffff)
+	sealalg = ptr[2] + (ptr[3] << 8);
+	if (sealalg != SEAL_ALG_NONE)
 		return GSS_S_DEFECTIVE_TOKEN;
-	if (signalg != SGN_ALG_DES_MAC_MD5)
+
+	if ((ptr[4] != 0xff) || (ptr[5] != 0xff))
 		return GSS_S_DEFECTIVE_TOKEN;
 
 	if (make_checksum("md5", ptr - 2, 8, message_buffer, 0, &md5cksum))

net/sunrpc/auth_gss/gss_krb5_wrap.c

@@ -159,7 +159,6 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
 	/* ptr now at byte 2 of header described in rfc 1964, section 1.2.1: */
 	krb5_hdr = ptr - 2;
 	msg_start = krb5_hdr + 24;
-	/* XXXJBF: */ BUG_ON(buf->head[0].iov_base + offset + headlen != msg_start + blocksize);
 
 	*(__be16 *)(krb5_hdr + 2) = htons(SGN_ALG_DES_MAC_MD5);
 	memset(krb5_hdr + 4, 0xff, 4);
@@ -196,7 +195,7 @@ gss_wrap_kerberos(struct gss_ctx *ctx, int offset,
 									pages))
 		return GSS_S_FAILURE;
 
-	return ((kctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE);
+	return (kctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE;
 }
 
 u32
@@ -232,16 +231,14 @@ gss_unwrap_kerberos(struct gss_ctx *ctx, int offset, struct xdr_buf *buf)
 	/* get the sign and seal algorithms */
 
 	signalg = ptr[0] + (ptr[1] << 8);
-	sealalg = ptr[2] + (ptr[3] << 8);
-
-	/* Sanity checks */
-
-	if ((ptr[4] != 0xff) || (ptr[5] != 0xff))
+	if (signalg != SGN_ALG_DES_MAC_MD5)
 		return GSS_S_DEFECTIVE_TOKEN;
 
+	sealalg = ptr[2] + (ptr[3] << 8);
 	if (sealalg != SEAL_ALG_DES)
 		return GSS_S_DEFECTIVE_TOKEN;
-	if (signalg != SGN_ALG_DES_MAC_MD5)
+
+	if ((ptr[4] != 0xff) || (ptr[5] != 0xff))
 		return GSS_S_DEFECTIVE_TOKEN;
 
 	if (gss_decrypt_xdr_buf(kctx->enc, buf,