SUNRPC: Remove net/sunrpc/auth_gss/gss_krb5_seqnum.c

These functions are no longer used.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

net/sunrpc/auth_gss/Makefile

@@ -12,6 +12,6 @@ auth_rpcgss-y := auth_gss.o gss_generic_token.o \
 obj-$(CONFIG_RPCSEC_GSS_KRB5) += rpcsec_gss_krb5.o
 
 rpcsec_gss_krb5-y := gss_krb5_mech.o gss_krb5_seal.o gss_krb5_unseal.o \
-	gss_krb5_seqnum.o gss_krb5_wrap.o gss_krb5_crypto.o gss_krb5_keys.o
+	gss_krb5_wrap.o gss_krb5_crypto.o gss_krb5_keys.o
 
 obj-$(CONFIG_RPCSEC_GSS_KRB5_KUNIT_TEST) += gss_krb5_test.o

net/sunrpc/auth_gss/gss_krb5_internal.h

@@ -153,13 +153,6 @@ static inline int krb5_derive_key(struct krb5_ctx *kctx,
 	return gk5e->derive_key(gk5e, inkey, outkey, &label, gfp_mask);
 }
 
-s32 krb5_make_seq_num(struct krb5_ctx *kctx, struct crypto_sync_skcipher *key,
-		      int direction, u32 seqnum, unsigned char *cksum,
-		      unsigned char *buf);
-
-s32 krb5_get_seq_num(struct krb5_ctx *kctx, unsigned char *cksum,
-		     unsigned char *buf, int *direction, u32 *seqnum);
-
 void krb5_make_confounder(u8 *p, int conflen);
 
 u32 make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen,

net/sunrpc/auth_gss/gss_krb5_seqnum.c

-/*
- *  linux/net/sunrpc/gss_krb5_seqnum.c
- *
- *  Adapted from MIT Kerberos 5-1.2.1 lib/gssapi/krb5/util_seqnum.c
- *
- *  Copyright (c) 2000 The Regents of the University of Michigan.
- *  All rights reserved.
- *
- *  Andy Adamson   <andros@umich.edu>
- */
-
-/*
- * Copyright 1993 by OpenVision Technologies, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appears in all copies and
- * that both that copyright notice and this permission notice appear in
- * supporting documentation, and that the name of OpenVision not be used
- * in advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. OpenVision makes no
- * representations about the suitability of this software for any
- * purpose.  It is provided "as is" without express or implied warranty.
- *
- * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
- * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
- * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <crypto/skcipher.h>
-#include <linux/types.h>
-#include <linux/sunrpc/gss_krb5.h>
-
-#include "gss_krb5_internal.h"
-
-#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
-# define RPCDBG_FACILITY        RPCDBG_AUTH
-#endif
-
-s32
-krb5_make_seq_num(struct krb5_ctx *kctx,
-		struct crypto_sync_skcipher *key,
-		int direction,
-		u32 seqnum,
-		unsigned char *cksum, unsigned char *buf)
-{
-	unsigned char *plain;
-	s32 code;
-
-	plain = kmalloc(8, GFP_KERNEL);
-	if (!plain)
-		return -ENOMEM;
-
-	plain[0] = (unsigned char) (seqnum & 0xff);
-	plain[1] = (unsigned char) ((seqnum >> 8) & 0xff);
-	plain[2] = (unsigned char) ((seqnum >> 16) & 0xff);
-	plain[3] = (unsigned char) ((seqnum >> 24) & 0xff);
-
-	plain[4] = direction;
-	plain[5] = direction;
-	plain[6] = direction;
-	plain[7] = direction;
-
-	code = krb5_encrypt(key, cksum, plain, buf, 8);
-	kfree(plain);
-	return code;
-}
-
-s32
-krb5_get_seq_num(struct krb5_ctx *kctx,
-	       unsigned char *cksum,
-	       unsigned char *buf,
-	       int *direction, u32 *seqnum)
-{
-	s32 code;
-	unsigned char *plain;
-	struct crypto_sync_skcipher *key = kctx->seq;
-
-	dprintk("RPC:       krb5_get_seq_num:\n");
-
-	plain = kmalloc(8, GFP_KERNEL);
-	if (!plain)
-		return -ENOMEM;
-
-	if ((code = krb5_decrypt(key, cksum, buf, plain, 8)))
-		goto out;
-
-	if ((plain[4] != plain[5]) || (plain[4] != plain[6]) ||
-	    (plain[4] != plain[7])) {
-		code = (s32)KG_BAD_SEQ;
-		goto out;
-	}
-
-	*direction = plain[4];
-
-	*seqnum = ((plain[0]) |
-		   (plain[1] << 8) | (plain[2] << 16) | (plain[3] << 24));
-
-out:
-	kfree(plain);
-	return code;
-}