1 files changed, 0 insertions, 459 deletions

diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_null.c b/drivers/staging/lustre/lustre/ptlrpc/sec_null.c
deleted file mode 100644
index ecc387d1b9b4..000000000000
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_null.c
+++ /dev/null
@@ -1,459 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.gnu.org/licenses/gpl-2.0.html
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2011, 2012, Intel Corporation.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/ptlrpc/sec_null.c
- *
- * Author: Eric Mei <ericm@clusterfs.com>
- */
-
-#define DEBUG_SUBSYSTEM S_SEC
-
-#include <obd_support.h>
-#include <obd_cksum.h>
-#include <obd_class.h>
-#include <lustre_net.h>
-#include <lustre_sec.h>
-
-#include "ptlrpc_internal.h"
-
-static struct ptlrpc_sec_policy null_policy;
-static struct ptlrpc_sec	null_sec;
-static struct ptlrpc_cli_ctx    null_cli_ctx;
-static struct ptlrpc_svc_ctx    null_svc_ctx;
-
-/*
- * we can temporarily use the topmost 8-bits of lm_secflvr to identify
- * the source sec part.
- */
-static inline
-void null_encode_sec_part(struct lustre_msg *msg, enum lustre_sec_part sp)
-{
-	msg->lm_secflvr |= (((__u32)sp) & 0xFF) << 24;
-}
-
-static inline
-enum lustre_sec_part null_decode_sec_part(struct lustre_msg *msg)
-{
-	return (msg->lm_secflvr >> 24) & 0xFF;
-}
-
-static int null_ctx_refresh(struct ptlrpc_cli_ctx *ctx)
-{
-	/* should never reach here */
-	LBUG();
-	return 0;
-}
-
-static
-int null_ctx_sign(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req)
-{
-	req->rq_reqbuf->lm_secflvr = SPTLRPC_FLVR_NULL;
-
-	if (!req->rq_import->imp_dlm_fake) {
-		struct obd_device *obd = req->rq_import->imp_obd;
-
-		null_encode_sec_part(req->rq_reqbuf,
-				     obd->u.cli.cl_sp_me);
-	}
-	req->rq_reqdata_len = req->rq_reqlen;
-	return 0;
-}
-
-static
-int null_ctx_verify(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req)
-{
-	__u32 cksums, cksumc;
-
-	LASSERT(req->rq_repdata);
-
-	req->rq_repmsg = req->rq_repdata;
-	req->rq_replen = req->rq_repdata_len;
-
-	if (req->rq_early) {
-		cksums = lustre_msg_get_cksum(req->rq_repdata);
-		cksumc = lustre_msg_calc_cksum(req->rq_repmsg);
-		if (cksumc != cksums) {
-			CDEBUG(D_SEC,
-			       "early reply checksum mismatch: %08x != %08x\n",
-			       cksumc, cksums);
-			return -EINVAL;
-		}
-	}
-
-	return 0;
-}
-
-static
-struct ptlrpc_sec *null_create_sec(struct obd_import *imp,
-				   struct ptlrpc_svc_ctx *svc_ctx,
-				   struct sptlrpc_flavor *sf)
-{
-	LASSERT(SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_NULL);
-
-	/* general layer has take a module reference for us, because we never
-	 * really destroy the sec, simply release the reference here.
-	 */
-	sptlrpc_policy_put(&null_policy);
-	return &null_sec;
-}
-
-static
-void null_destroy_sec(struct ptlrpc_sec *sec)
-{
-	LASSERT(sec == &null_sec);
-}
-
-static
-struct ptlrpc_cli_ctx *null_lookup_ctx(struct ptlrpc_sec *sec,
-				       struct vfs_cred *vcred,
-				       int create, int remove_dead)
-{
-	atomic_inc(&null_cli_ctx.cc_refcount);
-	return &null_cli_ctx;
-}
-
-static
-int null_flush_ctx_cache(struct ptlrpc_sec *sec,
-			 uid_t uid,
-			 int grace, int force)
-{
-	return 0;
-}
-
-static
-int null_alloc_reqbuf(struct ptlrpc_sec *sec,
-		      struct ptlrpc_request *req,
-		      int msgsize)
-{
-	if (!req->rq_reqbuf) {
-		int alloc_size = size_roundup_power2(msgsize);
-
-		LASSERT(!req->rq_pool);
-		req->rq_reqbuf = kvzalloc(alloc_size, GFP_NOFS);
-		if (!req->rq_reqbuf)
-			return -ENOMEM;
-
-		req->rq_reqbuf_len = alloc_size;
-	} else {
-		LASSERT(req->rq_pool);
-		LASSERT(req->rq_reqbuf_len >= msgsize);
-		memset(req->rq_reqbuf, 0, msgsize);
-	}
-
-	req->rq_reqmsg = req->rq_reqbuf;
-	return 0;
-}
-
-static
-void null_free_reqbuf(struct ptlrpc_sec *sec,
-		      struct ptlrpc_request *req)
-{
-	if (!req->rq_pool) {
-		LASSERTF(req->rq_reqmsg == req->rq_reqbuf,
-			 "req %p: reqmsg %p is not reqbuf %p in null sec\n",
-			 req, req->rq_reqmsg, req->rq_reqbuf);
-		LASSERTF(req->rq_reqbuf_len >= req->rq_reqlen,
-			 "req %p: reqlen %d should smaller than buflen %d\n",
-			 req, req->rq_reqlen, req->rq_reqbuf_len);
-
-		kvfree(req->rq_reqbuf);
-		req->rq_reqbuf = NULL;
-		req->rq_reqbuf_len = 0;
-	}
-}
-
-static
-int null_alloc_repbuf(struct ptlrpc_sec *sec,
-		      struct ptlrpc_request *req,
-		      int msgsize)
-{
-	/* add space for early replied */
-	msgsize += lustre_msg_early_size();
-
-	msgsize = size_roundup_power2(msgsize);
-
-	req->rq_repbuf = kvzalloc(msgsize, GFP_NOFS);
-	if (!req->rq_repbuf)
-		return -ENOMEM;
-
-	req->rq_repbuf_len = msgsize;
-	return 0;
-}
-
-static
-void null_free_repbuf(struct ptlrpc_sec *sec,
-		      struct ptlrpc_request *req)
-{
-	LASSERT(req->rq_repbuf);
-
-	kvfree(req->rq_repbuf);
-	req->rq_repbuf = NULL;
-	req->rq_repbuf_len = 0;
-}
-
-static
-int null_enlarge_reqbuf(struct ptlrpc_sec *sec,
-			struct ptlrpc_request *req,
-			int segment, int newsize)
-{
-	struct lustre_msg *newbuf;
-	struct lustre_msg *oldbuf = req->rq_reqmsg;
-	int oldsize, newmsg_size, alloc_size;
-
-	LASSERT(req->rq_reqbuf);
-	LASSERT(req->rq_reqbuf == req->rq_reqmsg);
-	LASSERT(req->rq_reqbuf_len >= req->rq_reqlen);
-	LASSERT(req->rq_reqlen == lustre_packed_msg_size(oldbuf));
-
-	/* compute new message size */
-	oldsize = req->rq_reqbuf->lm_buflens[segment];
-	req->rq_reqbuf->lm_buflens[segment] = newsize;
-	newmsg_size = lustre_packed_msg_size(oldbuf);
-	req->rq_reqbuf->lm_buflens[segment] = oldsize;
-
-	/* request from pool should always have enough buffer */
-	LASSERT(!req->rq_pool || req->rq_reqbuf_len >= newmsg_size);
-
-	if (req->rq_reqbuf_len < newmsg_size) {
-		alloc_size = size_roundup_power2(newmsg_size);
-
-		newbuf = kvzalloc(alloc_size, GFP_NOFS);
-		if (!newbuf)
-			return -ENOMEM;
-
-		/* Must lock this, so that otherwise unprotected change of
-		 * rq_reqmsg is not racing with parallel processing of
-		 * imp_replay_list traversing threads. See LU-3333
-		 * This is a bandaid at best, we really need to deal with this
-		 * in request enlarging code before unpacking that's already
-		 * there
-		 */
-		if (req->rq_import)
-			spin_lock(&req->rq_import->imp_lock);
-		memcpy(newbuf, req->rq_reqbuf, req->rq_reqlen);
-
-		kvfree(req->rq_reqbuf);
-		req->rq_reqbuf = newbuf;
-		req->rq_reqmsg = newbuf;
-		req->rq_reqbuf_len = alloc_size;
-
-		if (req->rq_import)
-			spin_unlock(&req->rq_import->imp_lock);
-	}
-
-	_sptlrpc_enlarge_msg_inplace(req->rq_reqmsg, segment, newsize);
-	req->rq_reqlen = newmsg_size;
-
-	return 0;
-}
-
-static struct ptlrpc_svc_ctx null_svc_ctx = {
-	.sc_refcount    = ATOMIC_INIT(1),
-	.sc_policy      = &null_policy,
-};
-
-static
-int null_accept(struct ptlrpc_request *req)
-{
-	LASSERT(SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) ==
-		SPTLRPC_POLICY_NULL);
-
-	if (req->rq_flvr.sf_rpc != SPTLRPC_FLVR_NULL) {
-		CERROR("Invalid rpc flavor 0x%x\n", req->rq_flvr.sf_rpc);
-		return SECSVC_DROP;
-	}
-
-	req->rq_sp_from = null_decode_sec_part(req->rq_reqbuf);
-
-	req->rq_reqmsg = req->rq_reqbuf;
-	req->rq_reqlen = req->rq_reqdata_len;
-
-	req->rq_svc_ctx = &null_svc_ctx;
-	atomic_inc(&req->rq_svc_ctx->sc_refcount);
-
-	return SECSVC_OK;
-}
-
-static
-int null_alloc_rs(struct ptlrpc_request *req, int msgsize)
-{
-	struct ptlrpc_reply_state *rs;
-	int rs_size = sizeof(*rs) + msgsize;
-
-	LASSERT(msgsize % 8 == 0);
-
-	rs = req->rq_reply_state;
-
-	if (rs) {
-		/* pre-allocated */
-		LASSERT(rs->rs_size >= rs_size);
-	} else {
-		rs = kvzalloc(rs_size, GFP_NOFS);
-		if (!rs)
-			return -ENOMEM;
-
-		rs->rs_size = rs_size;
-	}
-
-	rs->rs_svc_ctx = req->rq_svc_ctx;
-	atomic_inc(&req->rq_svc_ctx->sc_refcount);
-
-	rs->rs_repbuf = (struct lustre_msg *)(rs + 1);
-	rs->rs_repbuf_len = rs_size - sizeof(*rs);
-	rs->rs_msg = rs->rs_repbuf;
-
-	req->rq_reply_state = rs;
-	return 0;
-}
-
-static
-void null_free_rs(struct ptlrpc_reply_state *rs)
-{
-	LASSERT_ATOMIC_GT(&rs->rs_svc_ctx->sc_refcount, 1);
-	atomic_dec(&rs->rs_svc_ctx->sc_refcount);
-
-	if (!rs->rs_prealloc)
-		kvfree(rs);
-}
-
-static
-int null_authorize(struct ptlrpc_request *req)
-{
-	struct ptlrpc_reply_state *rs = req->rq_reply_state;
-
-	LASSERT(rs);
-
-	rs->rs_repbuf->lm_secflvr = SPTLRPC_FLVR_NULL;
-	rs->rs_repdata_len = req->rq_replen;
-
-	if (likely(req->rq_packed_final)) {
-		if (lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT)
-			req->rq_reply_off = lustre_msg_early_size();
-		else
-			req->rq_reply_off = 0;
-	} else {
-		__u32 cksum;
-
-		cksum = lustre_msg_calc_cksum(rs->rs_repbuf);
-		lustre_msg_set_cksum(rs->rs_repbuf, cksum);
-		req->rq_reply_off = 0;
-	}
-
-	return 0;
-}
-
-static struct ptlrpc_ctx_ops null_ctx_ops = {
-	.refresh		= null_ctx_refresh,
-	.sign		   = null_ctx_sign,
-	.verify		 = null_ctx_verify,
-};
-
-static struct ptlrpc_sec_cops null_sec_cops = {
-	.create_sec	     = null_create_sec,
-	.destroy_sec	    = null_destroy_sec,
-	.lookup_ctx	     = null_lookup_ctx,
-	.flush_ctx_cache	= null_flush_ctx_cache,
-	.alloc_reqbuf	   = null_alloc_reqbuf,
-	.alloc_repbuf	   = null_alloc_repbuf,
-	.free_reqbuf	    = null_free_reqbuf,
-	.free_repbuf	    = null_free_repbuf,
-	.enlarge_reqbuf	 = null_enlarge_reqbuf,
-};
-
-static struct ptlrpc_sec_sops null_sec_sops = {
-	.accept		 = null_accept,
-	.alloc_rs	       = null_alloc_rs,
-	.authorize	      = null_authorize,
-	.free_rs		= null_free_rs,
-};
-
-static struct ptlrpc_sec_policy null_policy = {
-	.sp_owner	       = THIS_MODULE,
-	.sp_name		= "sec.null",
-	.sp_policy	      = SPTLRPC_POLICY_NULL,
-	.sp_cops		= &null_sec_cops,
-	.sp_sops		= &null_sec_sops,
-};
-
-static void null_init_internal(void)
-{
-	static HLIST_HEAD(__list);
-
-	null_sec.ps_policy = &null_policy;
-	atomic_set(&null_sec.ps_refcount, 1);     /* always busy */
-	null_sec.ps_id = -1;
-	null_sec.ps_import = NULL;
-	null_sec.ps_flvr.sf_rpc = SPTLRPC_FLVR_NULL;
-	null_sec.ps_flvr.sf_flags = 0;
-	null_sec.ps_part = LUSTRE_SP_ANY;
-	null_sec.ps_dying = 0;
-	spin_lock_init(&null_sec.ps_lock);
-	atomic_set(&null_sec.ps_nctx, 1);	 /* for "null_cli_ctx" */
-	INIT_LIST_HEAD(&null_sec.ps_gc_list);
-	null_sec.ps_gc_interval = 0;
-	null_sec.ps_gc_next = 0;
-
-	hlist_add_head(&null_cli_ctx.cc_cache, &__list);
-	atomic_set(&null_cli_ctx.cc_refcount, 1);    /* for hash */
-	null_cli_ctx.cc_sec = &null_sec;
-	null_cli_ctx.cc_ops = &null_ctx_ops;
-	null_cli_ctx.cc_expire = 0;
-	null_cli_ctx.cc_flags = PTLRPC_CTX_CACHED | PTLRPC_CTX_ETERNAL |
-				PTLRPC_CTX_UPTODATE;
-	null_cli_ctx.cc_vcred.vc_uid = 0;
-	spin_lock_init(&null_cli_ctx.cc_lock);
-	INIT_LIST_HEAD(&null_cli_ctx.cc_req_list);
-	INIT_LIST_HEAD(&null_cli_ctx.cc_gc_chain);
-}
-
-int sptlrpc_null_init(void)
-{
-	int rc;
-
-	null_init_internal();
-
-	rc = sptlrpc_register_policy(&null_policy);
-	if (rc)
-		CERROR("failed to register %s: %d\n", null_policy.sp_name, rc);
-
-	return rc;
-}
-
-void sptlrpc_null_fini(void)
-{
-	int rc;
-
-	rc = sptlrpc_unregister_policy(&null_policy);
-	if (rc)
-		CERROR("failed to unregister %s: %d\n",
-		       null_policy.sp_name, rc);
-}