smb: move client and server files to common directory fs/smb

Move CIFS/SMB3 related client and server files (cifs.ko and ksmbd.ko
and helper modules) to new fs/smb subdirectory:

   fs/cifs --> fs/smb/client
   fs/ksmbd --> fs/smb/server
   fs/smbfs_common --> fs/smb/common

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

1 files changed, 0 insertions, 236 deletions

diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
deleted file mode 100644
index 6f3285f1dfee..000000000000
--- a/fs/cifs/cifs_spnego.c
+++ /dev/null
@@ -1,236 +0,0 @@
-// SPDX-License-Identifier: LGPL-2.1
-/*
- *   SPNEGO upcall management for CIFS
- *
- *   Copyright (c) 2007 Red Hat, Inc.
- *   Author(s): Jeff Layton (jlayton@redhat.com)
- *
- */
-
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <keys/user-type.h>
-#include <linux/key-type.h>
-#include <linux/keyctl.h>
-#include <linux/inet.h>
-#include "cifsglob.h"
-#include "cifs_spnego.h"
-#include "cifs_debug.h"
-#include "cifsproto.h"
-static const struct cred *spnego_cred;
-
-/* create a new cifs key */
-static int
-cifs_spnego_key_instantiate(struct key *key, struct key_preparsed_payload *prep)
-{
-	char *payload;
-	int ret;
-
-	ret = -ENOMEM;
-	payload = kmemdup(prep->data, prep->datalen, GFP_KERNEL);
-	if (!payload)
-		goto error;
-
-	/* attach the data */
-	key->payload.data[0] = payload;
-	ret = 0;
-
-error:
-	return ret;
-}
-
-static void
-cifs_spnego_key_destroy(struct key *key)
-{
-	kfree(key->payload.data[0]);
-}
-
-
-/*
- * keytype for CIFS spnego keys
- */
-struct key_type cifs_spnego_key_type = {
-	.name		= "cifs.spnego",
-	.instantiate	= cifs_spnego_key_instantiate,
-	.destroy	= cifs_spnego_key_destroy,
-	.describe	= user_describe,
-};
-
-/* length of longest version string e.g.  strlen("ver=0xFF") */
-#define MAX_VER_STR_LEN		8
-
-/* length of longest security mechanism name, eg in future could have
- * strlen(";sec=ntlmsspi") */
-#define MAX_MECH_STR_LEN	13
-
-/* strlen of "host=" */
-#define HOST_KEY_LEN		5
-
-/* strlen of ";ip4=" or ";ip6=" */
-#define IP_KEY_LEN		5
-
-/* strlen of ";uid=0x" */
-#define UID_KEY_LEN		7
-
-/* strlen of ";creduid=0x" */
-#define CREDUID_KEY_LEN		11
-
-/* strlen of ";user=" */
-#define USER_KEY_LEN		6
-
-/* strlen of ";pid=0x" */
-#define PID_KEY_LEN		7
-
-/* get a key struct with a SPNEGO security blob, suitable for session setup */
-struct key *
-cifs_get_spnego_key(struct cifs_ses *sesInfo,
-		    struct TCP_Server_Info *server)
-{
-	struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;
-	struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr;
-	char *description, *dp;
-	size_t desc_len;
-	struct key *spnego_key;
-	const char *hostname = server->hostname;
-	const struct cred *saved_cred;
-
-	/* length of fields (with semicolons): ver=0xyz ip4=ipaddress
-	   host=hostname sec=mechanism uid=0xFF user=username */
-	desc_len = MAX_VER_STR_LEN +
-		   HOST_KEY_LEN + strlen(hostname) +
-		   IP_KEY_LEN + INET6_ADDRSTRLEN +
-		   MAX_MECH_STR_LEN +
-		   UID_KEY_LEN + (sizeof(uid_t) * 2) +
-		   CREDUID_KEY_LEN + (sizeof(uid_t) * 2) +
-		   PID_KEY_LEN + (sizeof(pid_t) * 2) + 1;
-
-	if (sesInfo->user_name)
-		desc_len += USER_KEY_LEN + strlen(sesInfo->user_name);
-
-	spnego_key = ERR_PTR(-ENOMEM);
-	description = kzalloc(desc_len, GFP_KERNEL);
-	if (description == NULL)
-		goto out;
-
-	dp = description;
-	/* start with version and hostname portion of UNC string */
-	spnego_key = ERR_PTR(-EINVAL);
-	sprintf(dp, "ver=0x%x;host=%s;", CIFS_SPNEGO_UPCALL_VERSION,
-		hostname);
-	dp = description + strlen(description);
-
-	/* add the server address */
-	if (server->dstaddr.ss_family == AF_INET)
-		sprintf(dp, "ip4=%pI4", &sa->sin_addr);
-	else if (server->dstaddr.ss_family == AF_INET6)
-		sprintf(dp, "ip6=%pI6", &sa6->sin6_addr);
-	else
-		goto out;
-
-	dp = description + strlen(description);
-
-	/* for now, only sec=krb5 and sec=mskrb5 are valid */
-	if (server->sec_kerberos)
-		sprintf(dp, ";sec=krb5");
-	else if (server->sec_mskerberos)
-		sprintf(dp, ";sec=mskrb5");
-	else {
-		cifs_dbg(VFS, "unknown or missing server auth type, use krb5\n");
-		sprintf(dp, ";sec=krb5");
-	}
-
-	dp = description + strlen(description);
-	sprintf(dp, ";uid=0x%x",
-		from_kuid_munged(&init_user_ns, sesInfo->linux_uid));
-
-	dp = description + strlen(description);
-	sprintf(dp, ";creduid=0x%x",
-		from_kuid_munged(&init_user_ns, sesInfo->cred_uid));
-
-	if (sesInfo->user_name) {
-		dp = description + strlen(description);
-		sprintf(dp, ";user=%s", sesInfo->user_name);
-	}
-
-	dp = description + strlen(description);
-	sprintf(dp, ";pid=0x%x", current->pid);
-
-	cifs_dbg(FYI, "key description = %s\n", description);
-	saved_cred = override_creds(spnego_cred);
-	spnego_key = request_key(&cifs_spnego_key_type, description, "");
-	revert_creds(saved_cred);
-
-#ifdef CONFIG_CIFS_DEBUG2
-	if (cifsFYI && !IS_ERR(spnego_key)) {
-		struct cifs_spnego_msg *msg = spnego_key->payload.data[0];
-		cifs_dump_mem("SPNEGO reply blob:", msg->data, min(1024U,
-				msg->secblob_len + msg->sesskey_len));
-	}
-#endif /* CONFIG_CIFS_DEBUG2 */
-
-out:
-	kfree(description);
-	return spnego_key;
-}
-
-int
-init_cifs_spnego(void)
-{
-	struct cred *cred;
-	struct key *keyring;
-	int ret;
-
-	cifs_dbg(FYI, "Registering the %s key type\n",
-		 cifs_spnego_key_type.name);
-
-	/*
-	 * Create an override credential set with special thread keyring for
-	 * spnego upcalls.
-	 */
-
-	cred = prepare_kernel_cred(&init_task);
-	if (!cred)
-		return -ENOMEM;
-
-	keyring = keyring_alloc(".cifs_spnego",
-				GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
-				(KEY_POS_ALL & ~KEY_POS_SETATTR) |
-				KEY_USR_VIEW | KEY_USR_READ,
-				KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL);
-	if (IS_ERR(keyring)) {
-		ret = PTR_ERR(keyring);
-		goto failed_put_cred;
-	}
-
-	ret = register_key_type(&cifs_spnego_key_type);
-	if (ret < 0)
-		goto failed_put_key;
-
-	/*
-	 * instruct request_key() to use this special keyring as a cache for
-	 * the results it looks up
-	 */
-	set_bit(KEY_FLAG_ROOT_CAN_CLEAR, &keyring->flags);
-	cred->thread_keyring = keyring;
-	cred->jit_keyring = KEY_REQKEY_DEFL_THREAD_KEYRING;
-	spnego_cred = cred;
-
-	cifs_dbg(FYI, "cifs spnego keyring: %d\n", key_serial(keyring));
-	return 0;
-
-failed_put_key:
-	key_put(keyring);
-failed_put_cred:
-	put_cred(cred);
-	return ret;
-}
-
-void
-exit_cifs_spnego(void)
-{
-	key_revoke(spnego_cred->thread_keyring);
-	unregister_key_type(&cifs_spnego_key_type);
-	put_cred(spnego_cred);
-	cifs_dbg(FYI, "Unregistered %s key type\n", cifs_spnego_key_type.name);
-}