smb2ops.c 41.4 KB
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/*
 *  SMB2 version specific operations
 *
 *  Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
 *
 *  This library is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License v2 as published
 *  by the Free Software Foundation.
 *
 *  This library 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

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#include <linux/pagemap.h>
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#include <linux/vfs.h>
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#include "cifsglob.h"
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#include "smb2pdu.h"
#include "smb2proto.h"
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#include "cifsproto.h"
#include "cifs_debug.h"
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#include "cifs_unicode.h"
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#include "smb2status.h"
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#include "smb2glob.h"
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static int
change_conf(struct TCP_Server_Info *server)
{
	server->credits += server->echo_credits + server->oplock_credits;
	server->oplock_credits = server->echo_credits = 0;
	switch (server->credits) {
	case 0:
		return -1;
	case 1:
		server->echoes = false;
		server->oplocks = false;
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		cifs_dbg(VFS, "disabling echoes and oplocks\n");
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		break;
	case 2:
		server->echoes = true;
		server->oplocks = false;
		server->echo_credits = 1;
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		cifs_dbg(FYI, "disabling oplocks\n");
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		break;
	default:
		server->echoes = true;
		server->oplocks = true;
		server->echo_credits = 1;
		server->oplock_credits = 1;
	}
	server->credits -= server->echo_credits + server->oplock_credits;
	return 0;
}

static void
smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
		 const int optype)
{
	int *val, rc = 0;
	spin_lock(&server->req_lock);
	val = server->ops->get_credits_field(server, optype);
	*val += add;
	server->in_flight--;
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	if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
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		rc = change_conf(server);
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	/*
	 * Sometimes server returns 0 credits on oplock break ack - we need to
	 * rebalance credits in this case.
	 */
	else if (server->in_flight > 0 && server->oplock_credits == 0 &&
		 server->oplocks) {
		if (server->credits > 1) {
			server->credits--;
			server->oplock_credits++;
		}
	}
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	spin_unlock(&server->req_lock);
	wake_up(&server->request_q);
	if (rc)
		cifs_reconnect(server);
}

static void
smb2_set_credits(struct TCP_Server_Info *server, const int val)
{
	spin_lock(&server->req_lock);
	server->credits = val;
	spin_unlock(&server->req_lock);
}

static int *
smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
{
	switch (optype) {
	case CIFS_ECHO_OP:
		return &server->echo_credits;
	case CIFS_OBREAK_OP:
		return &server->oplock_credits;
	default:
		return &server->credits;
	}
}

static unsigned int
smb2_get_credits(struct mid_q_entry *mid)
{
	return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
}
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static __u64
smb2_get_next_mid(struct TCP_Server_Info *server)
{
	__u64 mid;
	/* for SMB2 we need the current value */
	spin_lock(&GlobalMid_Lock);
	mid = server->CurrentMid++;
	spin_unlock(&GlobalMid_Lock);
	return mid;
}
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static struct mid_q_entry *
smb2_find_mid(struct TCP_Server_Info *server, char *buf)
{
	struct mid_q_entry *mid;
	struct smb2_hdr *hdr = (struct smb2_hdr *)buf;

	spin_lock(&GlobalMid_Lock);
	list_for_each_entry(mid, &server->pending_mid_q, qhead) {
		if ((mid->mid == hdr->MessageId) &&
		    (mid->mid_state == MID_REQUEST_SUBMITTED) &&
		    (mid->command == hdr->Command)) {
			spin_unlock(&GlobalMid_Lock);
			return mid;
		}
	}
	spin_unlock(&GlobalMid_Lock);
	return NULL;
}

static void
smb2_dump_detail(void *buf)
{
#ifdef CONFIG_CIFS_DEBUG2
	struct smb2_hdr *smb = (struct smb2_hdr *)buf;

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	cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
		 smb->Command, smb->Status, smb->Flags, smb->MessageId,
		 smb->ProcessId);
	cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
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#endif
}

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static bool
smb2_need_neg(struct TCP_Server_Info *server)
{
	return server->max_read == 0;
}

static int
smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
{
	int rc;
	ses->server->CurrentMid = 0;
	rc = SMB2_negotiate(xid, ses);
	/* BB we probably don't need to retry with modern servers */
	if (rc == -EAGAIN)
		rc = -EHOSTDOWN;
	return rc;
}

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static unsigned int
smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
{
	struct TCP_Server_Info *server = tcon->ses->server;
	unsigned int wsize;

	/* start with specified wsize, or default */
	wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
	wsize = min_t(unsigned int, wsize, server->max_write);
	/*
	 * limit write size to 2 ** 16, because we don't support multicredit
	 * requests now.
	 */
	wsize = min_t(unsigned int, wsize, 2 << 15);

	return wsize;
}

static unsigned int
smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
{
	struct TCP_Server_Info *server = tcon->ses->server;
	unsigned int rsize;

	/* start with specified rsize, or default */
	rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
	rsize = min_t(unsigned int, rsize, server->max_read);
	/*
	 * limit write size to 2 ** 16, because we don't support multicredit
	 * requests now.
	 */
	rsize = min_t(unsigned int, rsize, 2 << 15);

	return rsize;
}

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#ifdef CONFIG_CIFS_STATS2
static int
SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
{
	int rc;
	unsigned int ret_data_len = 0;
	struct network_interface_info_ioctl_rsp *out_buf;

	rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
			FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
			NULL /* no data input */, 0 /* no data input */,
			(char **)&out_buf, &ret_data_len);

	if ((rc == 0)  && (ret_data_len > 0)) {
		/* Dump info on first interface */
		cifs_dbg(FYI, "Adapter Capability 0x%x\t",
			le32_to_cpu(out_buf->Capability));
		cifs_dbg(FYI, "Link Speed %lld\n",
			le64_to_cpu(out_buf->LinkSpeed));
	} else
		cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);

	return rc;
}
#endif /* STATS2 */

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static void
smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
{
	int rc;
	__le16 srch_path = 0; /* Null - open root of share */
	u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
	struct cifs_open_parms oparms;
	struct cifs_fid fid;

	oparms.tcon = tcon;
	oparms.desired_access = FILE_READ_ATTRIBUTES;
	oparms.disposition = FILE_OPEN;
	oparms.create_options = 0;
	oparms.fid = &fid;
	oparms.reconnect = false;

	rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
	if (rc)
		return;

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#ifdef CONFIG_CIFS_STATS2
	SMB3_request_interfaces(xid, tcon);
#endif /* STATS2 */

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	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
			FS_ATTRIBUTE_INFORMATION);
	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
			FS_DEVICE_INFORMATION);
	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
			FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
	SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
	return;
}

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static void
smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
{
	int rc;
	__le16 srch_path = 0; /* Null - open root of share */
	u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
	struct cifs_open_parms oparms;
	struct cifs_fid fid;

	oparms.tcon = tcon;
	oparms.desired_access = FILE_READ_ATTRIBUTES;
	oparms.disposition = FILE_OPEN;
	oparms.create_options = 0;
	oparms.fid = &fid;
	oparms.reconnect = false;

	rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
	if (rc)
		return;

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	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
			FS_ATTRIBUTE_INFORMATION);
	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
			FS_DEVICE_INFORMATION);
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	SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
	return;
}

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static int
smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
			struct cifs_sb_info *cifs_sb, const char *full_path)
{
	int rc;
	__le16 *utf16_path;
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	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
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	struct cifs_open_parms oparms;
	struct cifs_fid fid;
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	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
	if (!utf16_path)
		return -ENOMEM;

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	oparms.tcon = tcon;
	oparms.desired_access = FILE_READ_ATTRIBUTES;
	oparms.disposition = FILE_OPEN;
	oparms.create_options = 0;
	oparms.fid = &fid;
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	oparms.reconnect = false;
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	rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
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	if (rc) {
		kfree(utf16_path);
		return rc;
	}

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	rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
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	kfree(utf16_path);
	return rc;
}

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static int
smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
		  struct cifs_sb_info *cifs_sb, const char *full_path,
		  u64 *uniqueid, FILE_ALL_INFO *data)
{
	*uniqueid = le64_to_cpu(data->IndexNumber);
	return 0;
}

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static int
smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
		     struct cifs_fid *fid, FILE_ALL_INFO *data)
{
	int rc;
	struct smb2_file_all_info *smb2_data;

	smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
			    GFP_KERNEL);
	if (smb2_data == NULL)
		return -ENOMEM;

	rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
			     smb2_data);
	if (!rc)
		move_smb2_info_to_cifs(data, smb2_data);
	kfree(smb2_data);
	return rc;
}

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static bool
smb2_can_echo(struct TCP_Server_Info *server)
{
	return server->echoes;
}

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static void
smb2_clear_stats(struct cifs_tcon *tcon)
{
#ifdef CONFIG_CIFS_STATS
	int i;
	for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
		atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
		atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
	}
#endif
}

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static void
smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
{
	seq_puts(m, "\n\tShare Capabilities:");
	if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
		seq_puts(m, " DFS,");
	if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
		seq_puts(m, " CONTINUOUS AVAILABILITY,");
	if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
		seq_puts(m, " SCALEOUT,");
	if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
		seq_puts(m, " CLUSTER,");
	if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
		seq_puts(m, " ASYMMETRIC,");
	if (tcon->capabilities == 0)
		seq_puts(m, " None");
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	if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
		seq_puts(m, " Aligned,");
	if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
		seq_puts(m, " Partition Aligned,");
	if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
		seq_puts(m, " SSD,");
	if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
		seq_puts(m, " TRIM-support,");

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	seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
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	if (tcon->perf_sector_size)
		seq_printf(m, "\tOptimal sector size: 0x%x",
			   tcon->perf_sector_size);
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}

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static void
smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
{
#ifdef CONFIG_CIFS_STATS
	atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
	atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
	seq_printf(m, "\nNegotiates: %d sent %d failed",
		   atomic_read(&sent[SMB2_NEGOTIATE_HE]),
		   atomic_read(&failed[SMB2_NEGOTIATE_HE]));
	seq_printf(m, "\nSessionSetups: %d sent %d failed",
		   atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
		   atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
	seq_printf(m, "\nLogoffs: %d sent %d failed",
		   atomic_read(&sent[SMB2_LOGOFF_HE]),
		   atomic_read(&failed[SMB2_LOGOFF_HE]));
	seq_printf(m, "\nTreeConnects: %d sent %d failed",
		   atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
		   atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
	seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
		   atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
		   atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
	seq_printf(m, "\nCreates: %d sent %d failed",
		   atomic_read(&sent[SMB2_CREATE_HE]),
		   atomic_read(&failed[SMB2_CREATE_HE]));
	seq_printf(m, "\nCloses: %d sent %d failed",
		   atomic_read(&sent[SMB2_CLOSE_HE]),
		   atomic_read(&failed[SMB2_CLOSE_HE]));
	seq_printf(m, "\nFlushes: %d sent %d failed",
		   atomic_read(&sent[SMB2_FLUSH_HE]),
		   atomic_read(&failed[SMB2_FLUSH_HE]));
	seq_printf(m, "\nReads: %d sent %d failed",
		   atomic_read(&sent[SMB2_READ_HE]),
		   atomic_read(&failed[SMB2_READ_HE]));
	seq_printf(m, "\nWrites: %d sent %d failed",
		   atomic_read(&sent[SMB2_WRITE_HE]),
		   atomic_read(&failed[SMB2_WRITE_HE]));
	seq_printf(m, "\nLocks: %d sent %d failed",
		   atomic_read(&sent[SMB2_LOCK_HE]),
		   atomic_read(&failed[SMB2_LOCK_HE]));
	seq_printf(m, "\nIOCTLs: %d sent %d failed",
		   atomic_read(&sent[SMB2_IOCTL_HE]),
		   atomic_read(&failed[SMB2_IOCTL_HE]));
	seq_printf(m, "\nCancels: %d sent %d failed",
		   atomic_read(&sent[SMB2_CANCEL_HE]),
		   atomic_read(&failed[SMB2_CANCEL_HE]));
	seq_printf(m, "\nEchos: %d sent %d failed",
		   atomic_read(&sent[SMB2_ECHO_HE]),
		   atomic_read(&failed[SMB2_ECHO_HE]));
	seq_printf(m, "\nQueryDirectories: %d sent %d failed",
		   atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
		   atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
	seq_printf(m, "\nChangeNotifies: %d sent %d failed",
		   atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
		   atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
	seq_printf(m, "\nQueryInfos: %d sent %d failed",
		   atomic_read(&sent[SMB2_QUERY_INFO_HE]),
		   atomic_read(&failed[SMB2_QUERY_INFO_HE]));
	seq_printf(m, "\nSetInfos: %d sent %d failed",
		   atomic_read(&sent[SMB2_SET_INFO_HE]),
		   atomic_read(&failed[SMB2_SET_INFO_HE]));
	seq_printf(m, "\nOplockBreaks: %d sent %d failed",
		   atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
		   atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
#endif
}

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static void
smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
{
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	struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
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	struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;

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	cfile->fid.persistent_fid = fid->persistent_fid;
	cfile->fid.volatile_fid = fid->volatile_fid;
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	server->ops->set_oplock_level(cinode, oplock, fid->epoch,
				      &fid->purge_cache);
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	cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
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}

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static void
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smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
		struct cifs_fid *fid)
{
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	SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
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}

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static int
SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
		     u64 persistent_fid, u64 volatile_fid,
		     struct copychunk_ioctl *pcchunk)
{
	int rc;
	unsigned int ret_data_len;
	struct resume_key_req *res_key;

	rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
			FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
			NULL, 0 /* no input */,
			(char **)&res_key, &ret_data_len);

	if (rc) {
		cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
		goto req_res_key_exit;
	}
	if (ret_data_len < sizeof(struct resume_key_req)) {
		cifs_dbg(VFS, "Invalid refcopy resume key length\n");
		rc = -EINVAL;
		goto req_res_key_exit;
	}
	memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);

req_res_key_exit:
	kfree(res_key);
	return rc;
}

static int
smb2_clone_range(const unsigned int xid,
			struct cifsFileInfo *srcfile,
			struct cifsFileInfo *trgtfile, u64 src_off,
			u64 len, u64 dest_off)
{
	int rc;
	unsigned int ret_data_len;
	struct copychunk_ioctl *pcchunk;
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	struct copychunk_ioctl_rsp *retbuf = NULL;
	struct cifs_tcon *tcon;
	int chunks_copied = 0;
	bool chunk_sizes_updated = false;
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	pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);

	if (pcchunk == NULL)
		return -ENOMEM;

	cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
	/* Request a key from the server to identify the source of the copy */
	rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
				srcfile->fid.persistent_fid,
				srcfile->fid.volatile_fid, pcchunk);

	/* Note: request_res_key sets res_key null only if rc !=0 */
	if (rc)
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		goto cchunk_out;
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	/* For now array only one chunk long, will make more flexible later */
	pcchunk->ChunkCount = __constant_cpu_to_le32(1);
	pcchunk->Reserved = 0;
	pcchunk->Reserved2 = 0;

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	tcon = tlink_tcon(trgtfile->tlink);
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	while (len > 0) {
		pcchunk->SourceOffset = cpu_to_le64(src_off);
		pcchunk->TargetOffset = cpu_to_le64(dest_off);
		pcchunk->Length =
			cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk));
567

568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640
		/* Request server copy to target from src identified by key */
		rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
			trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
			true /* is_fsctl */, (char *)pcchunk,
			sizeof(struct copychunk_ioctl),	(char **)&retbuf,
			&ret_data_len);
		if (rc == 0) {
			if (ret_data_len !=
					sizeof(struct copychunk_ioctl_rsp)) {
				cifs_dbg(VFS, "invalid cchunk response size\n");
				rc = -EIO;
				goto cchunk_out;
			}
			if (retbuf->TotalBytesWritten == 0) {
				cifs_dbg(FYI, "no bytes copied\n");
				rc = -EIO;
				goto cchunk_out;
			}
			/*
			 * Check if server claimed to write more than we asked
			 */
			if (le32_to_cpu(retbuf->TotalBytesWritten) >
			    le32_to_cpu(pcchunk->Length)) {
				cifs_dbg(VFS, "invalid copy chunk response\n");
				rc = -EIO;
				goto cchunk_out;
			}
			if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
				cifs_dbg(VFS, "invalid num chunks written\n");
				rc = -EIO;
				goto cchunk_out;
			}
			chunks_copied++;

			src_off += le32_to_cpu(retbuf->TotalBytesWritten);
			dest_off += le32_to_cpu(retbuf->TotalBytesWritten);
			len -= le32_to_cpu(retbuf->TotalBytesWritten);

			cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %d\n",
				le32_to_cpu(retbuf->ChunksWritten),
				le32_to_cpu(retbuf->ChunkBytesWritten),
				le32_to_cpu(retbuf->TotalBytesWritten));
		} else if (rc == -EINVAL) {
			if (ret_data_len != sizeof(struct copychunk_ioctl_rsp))
				goto cchunk_out;

			cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n",
				le32_to_cpu(retbuf->ChunksWritten),
				le32_to_cpu(retbuf->ChunkBytesWritten),
				le32_to_cpu(retbuf->TotalBytesWritten));

			/*
			 * Check if this is the first request using these sizes,
			 * (ie check if copy succeed once with original sizes
			 * and check if the server gave us different sizes after
			 * we already updated max sizes on previous request).
			 * if not then why is the server returning an error now
			 */
			if ((chunks_copied != 0) || chunk_sizes_updated)
				goto cchunk_out;

			/* Check that server is not asking us to grow size */
			if (le32_to_cpu(retbuf->ChunkBytesWritten) <
					tcon->max_bytes_chunk)
				tcon->max_bytes_chunk =
					le32_to_cpu(retbuf->ChunkBytesWritten);
			else
				goto cchunk_out; /* server gave us bogus size */

			/* No need to change MaxChunks since already set to 1 */
			chunk_sizes_updated = true;
		}
	}
641

642
cchunk_out:
643 644 645 646
	kfree(pcchunk);
	return rc;
}

647 648 649 650 651 652 653
static int
smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
		struct cifs_fid *fid)
{
	return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
}

654 655 656 657 658 659 660 661 662 663 664 665 666 667
static unsigned int
smb2_read_data_offset(char *buf)
{
	struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
	return rsp->DataOffset;
}

static unsigned int
smb2_read_data_length(char *buf)
{
	struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
	return le32_to_cpu(rsp->DataLength);
}

668 669 670 671 672 673 674 675 676 677 678

static int
smb2_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
	       struct cifs_io_parms *parms, unsigned int *bytes_read,
	       char **buf, int *buf_type)
{
	parms->persistent_fid = cfile->fid.persistent_fid;
	parms->volatile_fid = cfile->fid.volatile_fid;
	return SMB2_read(xid, parms, bytes_read, buf, buf_type);
}

679 680 681 682 683 684 685 686 687 688 689
static int
smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
		struct cifs_io_parms *parms, unsigned int *written,
		struct kvec *iov, unsigned long nr_segs)
{

	parms->persistent_fid = cfile->fid.persistent_fid;
	parms->volatile_fid = cfile->fid.volatile_fid;
	return SMB2_write(xid, parms, written, iov, nr_segs);
}

690 691 692 693 694 695 696 697 698
static int
smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
		   struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
{
	__le64 eof = cpu_to_le64(size);
	return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
			    cfile->fid.volatile_fid, cfile->pid, &eof);
}

699 700 701 702 703 704 705 706
static int
smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
		   struct cifsFileInfo *cfile)
{
	return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
			    cfile->fid.volatile_fid);
}

707 708 709 710 711 712 713 714
static int
smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
		     const char *path, struct cifs_sb_info *cifs_sb,
		     struct cifs_fid *fid, __u16 search_flags,
		     struct cifs_search_info *srch_inf)
{
	__le16 *utf16_path;
	int rc;
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	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
716
	struct cifs_open_parms oparms;
717 718 719 720 721

	utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
	if (!utf16_path)
		return -ENOMEM;

722 723 724 725 726
	oparms.tcon = tcon;
	oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
	oparms.disposition = FILE_OPEN;
	oparms.create_options = 0;
	oparms.fid = fid;
727
	oparms.reconnect = false;
728

729
	rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
730 731
	kfree(utf16_path);
	if (rc) {
732
		cifs_dbg(VFS, "open dir failed\n");
733 734 735 736 737 738
		return rc;
	}

	srch_inf->entries_in_buffer = 0;
	srch_inf->index_of_last_entry = 0;

739 740
	rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
				  fid->volatile_fid, 0, srch_inf);
741
	if (rc) {
742
		cifs_dbg(VFS, "query directory failed\n");
743
		SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763
	}
	return rc;
}

static int
smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
		    struct cifs_fid *fid, __u16 search_flags,
		    struct cifs_search_info *srch_inf)
{
	return SMB2_query_directory(xid, tcon, fid->persistent_fid,
				    fid->volatile_fid, 0, srch_inf);
}

static int
smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
	       struct cifs_fid *fid)
{
	return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
}

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/*
* If we negotiate SMB2 protocol and get STATUS_PENDING - update
* the number of credits and return true. Otherwise - return false.
*/
static bool
smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
{
	struct smb2_hdr *hdr = (struct smb2_hdr *)buf;

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	if (hdr->Status != STATUS_PENDING)
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		return false;

	if (!length) {
		spin_lock(&server->req_lock);
		server->credits += le16_to_cpu(hdr->CreditRequest);
		spin_unlock(&server->req_lock);
		wake_up(&server->request_q);
	}

	return true;
}

786 787 788 789
static int
smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
		     struct cifsInodeInfo *cinode)
{
790 791 792 793
	if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
		return SMB2_lease_break(0, tcon, cinode->lease_key,
					smb2_get_lease_state(cinode));

794 795
	return SMB2_oplock_break(0, tcon, fid->persistent_fid,
				 fid->volatile_fid,
796
				 CIFS_CACHE_READ(cinode) ? 1 : 0);
797 798
}

799 800 801 802 803 804 805
static int
smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
	     struct kstatfs *buf)
{
	int rc;
	__le16 srch_path = 0; /* Null - open root of share */
	u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
806 807 808 809 810 811 812 813
	struct cifs_open_parms oparms;
	struct cifs_fid fid;

	oparms.tcon = tcon;
	oparms.desired_access = FILE_READ_ATTRIBUTES;
	oparms.disposition = FILE_OPEN;
	oparms.create_options = 0;
	oparms.fid = &fid;
814
	oparms.reconnect = false;
815

816
	rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
817 818 819
	if (rc)
		return rc;
	buf->f_type = SMB2_MAGIC_NUMBER;
820 821 822
	rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
			   buf);
	SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
823 824 825
	return rc;
}

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static bool
smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
{
	return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
	       ob1->fid.volatile_fid == ob2->fid.volatile_fid;
}

833 834 835 836 837 838 839 840 841 842 843
static int
smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
	       __u64 length, __u32 type, int lock, int unlock, bool wait)
{
	if (unlock && !lock)
		type = SMB2_LOCKFLAG_UNLOCK;
	return SMB2_lock(xid, tlink_tcon(cfile->tlink),
			 cfile->fid.persistent_fid, cfile->fid.volatile_fid,
			 current->tgid, length, offset, type, wait);
}

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static void
smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
{
	memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
}

static void
smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
{
	memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
}

static void
smb2_new_lease_key(struct cifs_fid *fid)
{
	get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
}

862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912
static int
smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
		   const char *full_path, char **target_path,
		   struct cifs_sb_info *cifs_sb)
{
	int rc;
	__le16 *utf16_path;
	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
	struct cifs_open_parms oparms;
	struct cifs_fid fid;
	struct smb2_err_rsp *err_buf = NULL;
	struct smb2_symlink_err_rsp *symlink;
	unsigned int sub_len, sub_offset;

	cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);

	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
	if (!utf16_path)
		return -ENOMEM;

	oparms.tcon = tcon;
	oparms.desired_access = FILE_READ_ATTRIBUTES;
	oparms.disposition = FILE_OPEN;
	oparms.create_options = 0;
	oparms.fid = &fid;
	oparms.reconnect = false;

	rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);

	if (!rc || !err_buf) {
		kfree(utf16_path);
		return -ENOENT;
	}
	/* open must fail on symlink - reset rc */
	rc = 0;
	symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
	sub_len = le16_to_cpu(symlink->SubstituteNameLength);
	sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
	*target_path = cifs_strndup_from_utf16(
				(char *)symlink->PathBuffer + sub_offset,
				sub_len, true, cifs_sb->local_nls);
	if (!(*target_path)) {
		kfree(utf16_path);
		return -ENOMEM;
	}
	convert_delimiter(*target_path, '/');
	cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
	kfree(utf16_path);
	return rc;
}

913
static void
914 915
smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
		      unsigned int epoch, bool *purge_cache)
916 917 918 919 920
{
	oplock &= 0xFF;
	if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
		return;
	if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
921
		cinode->oplock = CIFS_CACHE_RHW_FLG;
922 923 924
		cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
			 &cinode->vfs_inode);
	} else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
925
		cinode->oplock = CIFS_CACHE_RW_FLG;
926 927 928 929 930 931 932 933 934 935 936
		cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
			 &cinode->vfs_inode);
	} else if (oplock == SMB2_OPLOCK_LEVEL_II) {
		cinode->oplock = CIFS_CACHE_READ_FLG;
		cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
			 &cinode->vfs_inode);
	} else
		cinode->oplock = 0;
}

static void
937 938
smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
		       unsigned int epoch, bool *purge_cache)
939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964
{
	char message[5] = {0};

	oplock &= 0xFF;
	if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
		return;

	cinode->oplock = 0;
	if (oplock & SMB2_LEASE_READ_CACHING_HE) {
		cinode->oplock |= CIFS_CACHE_READ_FLG;
		strcat(message, "R");
	}
	if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
		cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
		strcat(message, "H");
	}
	if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
		cinode->oplock |= CIFS_CACHE_WRITE_FLG;
		strcat(message, "W");
	}
	if (!cinode->oplock)
		strcat(message, "None");
	cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
		 &cinode->vfs_inode);
}

965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999
static void
smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
		      unsigned int epoch, bool *purge_cache)
{
	unsigned int old_oplock = cinode->oplock;

	smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);

	if (purge_cache) {
		*purge_cache = false;
		if (old_oplock == CIFS_CACHE_READ_FLG) {
			if (cinode->oplock == CIFS_CACHE_READ_FLG &&
			    (epoch - cinode->epoch > 0))
				*purge_cache = true;
			else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
				 (epoch - cinode->epoch > 1))
				*purge_cache = true;
			else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
				 (epoch - cinode->epoch > 1))
				*purge_cache = true;
			else if (cinode->oplock == 0 &&
				 (epoch - cinode->epoch > 0))
				*purge_cache = true;
		} else if (old_oplock == CIFS_CACHE_RH_FLG) {
			if (cinode->oplock == CIFS_CACHE_RH_FLG &&
			    (epoch - cinode->epoch > 0))
				*purge_cache = true;
			else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
				 (epoch - cinode->epoch > 1))
				*purge_cache = true;
		}
		cinode->epoch = epoch;
	}
}

1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012
static bool
smb2_is_read_op(__u32 oplock)
{
	return oplock == SMB2_OPLOCK_LEVEL_II;
}

static bool
smb21_is_read_op(__u32 oplock)
{
	return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
	       !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
}

1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025
static __le32
map_oplock_to_lease(u8 oplock)
{
	if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
		return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
	else if (oplock == SMB2_OPLOCK_LEVEL_II)
		return SMB2_LEASE_READ_CACHING;
	else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
		return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
		       SMB2_LEASE_WRITE_CACHING;
	return 0;
}

1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
static char *
smb2_create_lease_buf(u8 *lease_key, u8 oplock)
{
	struct create_lease *buf;

	buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
	if (!buf)
		return NULL;

	buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
	buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
1037
	buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051

	buf->ccontext.DataOffset = cpu_to_le16(offsetof
					(struct create_lease, lcontext));
	buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
	buf->ccontext.NameOffset = cpu_to_le16(offsetof
				(struct create_lease, Name));
	buf->ccontext.NameLength = cpu_to_le16(4);
	buf->Name[0] = 'R';
	buf->Name[1] = 'q';
	buf->Name[2] = 'L';
	buf->Name[3] = 's';
	return (char *)buf;
}

1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
static char *
smb3_create_lease_buf(u8 *lease_key, u8 oplock)
{
	struct create_lease_v2 *buf;

	buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
	if (!buf)
		return NULL;

	buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
	buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
	buf->lcontext.LeaseState = map_oplock_to_lease(oplock);

	buf->ccontext.DataOffset = cpu_to_le16(offsetof
					(struct create_lease_v2, lcontext));
	buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
	buf->ccontext.NameOffset = cpu_to_le16(offsetof
				(struct create_lease_v2, Name));
	buf->ccontext.NameLength = cpu_to_le16(4);
	buf->Name[0] = 'R';
	buf->Name[1] = 'q';
	buf->Name[2] = 'L';
	buf->Name[3] = 's';
	return (char *)buf;
}

1078
static __u8
1079
smb2_parse_lease_buf(void *buf, unsigned int *epoch)
1080 1081 1082
{
	struct create_lease *lc = (struct create_lease *)buf;

1083
	*epoch = 0; /* not used */
1084 1085 1086 1087 1088
	if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
		return SMB2_OPLOCK_LEVEL_NOCHANGE;
	return le32_to_cpu(lc->lcontext.LeaseState);
}

1089
static __u8
1090
smb3_parse_lease_buf(void *buf, unsigned int *epoch)
1091 1092 1093
{
	struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;

1094
	*epoch = le16_to_cpu(lc->lcontext.Epoch);
1095 1096 1097 1098 1099
	if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
		return SMB2_OPLOCK_LEVEL_NOCHANGE;
	return le32_to_cpu(lc->lcontext.LeaseState);
}

1100
struct smb_version_operations smb20_operations = {
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Pavel Shilovsky 已提交
1101
	.compare_fids = smb2_compare_fids,
1102
	.setup_request = smb2_setup_request,
1103
	.setup_async_request = smb2_setup_async_request,
1104
	.check_receive = smb2_check_receive,
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Pavel Shilovsky 已提交
1105 1106 1107 1108
	.add_credits = smb2_add_credits,
	.set_credits = smb2_set_credits,
	.get_credits_field = smb2_get_credits_field,
	.get_credits = smb2_get_credits,
1109
	.get_next_mid = smb2_get_next_mid,
1110 1111 1112
	.read_data_offset = smb2_read_data_offset,
	.read_data_length = smb2_read_data_length,
	.map_error = map_smb2_to_linux_error,
1113 1114 1115
	.find_mid = smb2_find_mid,
	.check_message = smb2_check_message,
	.dump_detail = smb2_dump_detail,
1116 1117
	.clear_stats = smb2_clear_stats,
	.print_stats = smb2_print_stats,
1118
	.is_oplock_break = smb2_is_valid_oplock_break,
1119 1120
	.need_neg = smb2_need_neg,
	.negotiate = smb2_negotiate,
1121 1122
	.negotiate_wsize = smb2_negotiate_wsize,
	.negotiate_rsize = smb2_negotiate_rsize,
1123 1124
	.sess_setup = SMB2_sess_setup,
	.logoff = SMB2_logoff,
1125 1126
	.tree_connect = SMB2_tcon,
	.tree_disconnect = SMB2_tdis,
1127
	.qfs_tcon = smb2_qfs_tcon,
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	.is_path_accessible = smb2_is_path_accessible,
1129 1130
	.can_echo = smb2_can_echo,
	.echo = SMB2_echo,
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	.query_path_info = smb2_query_path_info,
	.get_srv_inum = smb2_get_srv_inum,
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	.query_file_info = smb2_query_file_info,
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	.set_path_size = smb2_set_path_size,
	.set_file_size = smb2_set_file_size,
1136
	.set_file_info = smb2_set_file_info,
1137
	.set_compression = smb2_set_compression,
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	.mkdir = smb2_mkdir,
	.mkdir_setinfo = smb2_mkdir_setinfo,
1140
	.rmdir = smb2_rmdir,
1141
	.unlink = smb2_unlink,
1142
	.rename = smb2_rename_path,
1143
	.create_hardlink = smb2_create_hardlink,
1144
	.query_symlink = smb2_query_symlink,
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	.open = smb2_open_file,
	.set_fid = smb2_set_fid,
	.close = smb2_close_file,
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	.flush = smb2_flush_file,
1149
	.async_readv = smb2_async_readv,
1150
	.async_writev = smb2_async_writev,
1151
	.sync_read = smb2_sync_read,
1152
	.sync_write = smb2_sync_write,
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	.query_dir_first = smb2_query_dir_first,
	.query_dir_next = smb2_query_dir_next,
	.close_dir = smb2_close_dir,
	.calc_smb_size = smb2_calc_size,
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	.is_status_pending = smb2_is_status_pending,
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	.oplock_response = smb2_oplock_response,
1159
	.queryfs = smb2_queryfs,
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	.mand_lock = smb2_mand_lock,
	.mand_unlock_range = smb2_unlock_range,
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	.push_mand_locks = smb2_push_mandatory_locks,
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	.get_lease_key = smb2_get_lease_key,
	.set_lease_key = smb2_set_lease_key,
	.new_lease_key = smb2_new_lease_key,
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	.calc_signature = smb2_calc_signature,
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	.is_read_op = smb2_is_read_op,
	.set_oplock_level = smb2_set_oplock_level,
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	.create_lease_buf = smb2_create_lease_buf,
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	.parse_lease_buf = smb2_parse_lease_buf,
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	.clone_range = smb2_clone_range,
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};

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struct smb_version_operations smb21_operations = {
	.compare_fids = smb2_compare_fids,
	.setup_request = smb2_setup_request,
	.setup_async_request = smb2_setup_async_request,
	.check_receive = smb2_check_receive,
	.add_credits = smb2_add_credits,
	.set_credits = smb2_set_credits,
	.get_credits_field = smb2_get_credits_field,
	.get_credits = smb2_get_credits,
	.get_next_mid = smb2_get_next_mid,
	.read_data_offset = smb2_read_data_offset,
	.read_data_length = smb2_read_data_length,
	.map_error = map_smb2_to_linux_error,
	.find_mid = smb2_find_mid,
	.check_message = smb2_check_message,
	.dump_detail = smb2_dump_detail,
	.clear_stats = smb2_clear_stats,
	.print_stats = smb2_print_stats,
	.is_oplock_break = smb2_is_valid_oplock_break,
	.need_neg = smb2_need_neg,
	.negotiate = smb2_negotiate,
	.negotiate_wsize = smb2_negotiate_wsize,
	.negotiate_rsize = smb2_negotiate_rsize,
	.sess_setup = SMB2_sess_setup,
	.logoff = SMB2_logoff,
	.tree_connect = SMB2_tcon,
	.tree_disconnect = SMB2_tdis,
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	.qfs_tcon = smb2_qfs_tcon,
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	.is_path_accessible = smb2_is_path_accessible,
	.can_echo = smb2_can_echo,
	.echo = SMB2_echo,
	.query_path_info = smb2_query_path_info,
	.get_srv_inum = smb2_get_srv_inum,
	.query_file_info = smb2_query_file_info,
	.set_path_size = smb2_set_path_size,
	.set_file_size = smb2_set_file_size,
	.set_file_info = smb2_set_file_info,
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	.set_compression = smb2_set_compression,
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	.mkdir = smb2_mkdir,
	.mkdir_setinfo = smb2_mkdir_setinfo,
	.rmdir = smb2_rmdir,
	.unlink = smb2_unlink,
	.rename = smb2_rename_path,
	.create_hardlink = smb2_create_hardlink,
	.query_symlink = smb2_query_symlink,
	.open = smb2_open_file,
	.set_fid = smb2_set_fid,
	.close = smb2_close_file,
	.flush = smb2_flush_file,
	.async_readv = smb2_async_readv,
	.async_writev = smb2_async_writev,
	.sync_read = smb2_sync_read,
	.sync_write = smb2_sync_write,
	.query_dir_first = smb2_query_dir_first,
	.query_dir_next = smb2_query_dir_next,
	.close_dir = smb2_close_dir,
	.calc_smb_size = smb2_calc_size,
	.is_status_pending = smb2_is_status_pending,
	.oplock_response = smb2_oplock_response,
	.queryfs = smb2_queryfs,
	.mand_lock = smb2_mand_lock,
	.mand_unlock_range = smb2_unlock_range,
	.push_mand_locks = smb2_push_mandatory_locks,
	.get_lease_key = smb2_get_lease_key,
	.set_lease_key = smb2_set_lease_key,
	.new_lease_key = smb2_new_lease_key,
	.calc_signature = smb2_calc_signature,
	.is_read_op = smb21_is_read_op,
	.set_oplock_level = smb21_set_oplock_level,
1243
	.create_lease_buf = smb2_create_lease_buf,
1244
	.parse_lease_buf = smb2_parse_lease_buf,
1245
	.clone_range = smb2_clone_range,
1246
};
1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265

struct smb_version_operations smb30_operations = {
	.compare_fids = smb2_compare_fids,
	.setup_request = smb2_setup_request,
	.setup_async_request = smb2_setup_async_request,
	.check_receive = smb2_check_receive,
	.add_credits = smb2_add_credits,
	.set_credits = smb2_set_credits,
	.get_credits_field = smb2_get_credits_field,
	.get_credits = smb2_get_credits,
	.get_next_mid = smb2_get_next_mid,
	.read_data_offset = smb2_read_data_offset,
	.read_data_length = smb2_read_data_length,
	.map_error = map_smb2_to_linux_error,
	.find_mid = smb2_find_mid,
	.check_message = smb2_check_message,
	.dump_detail = smb2_dump_detail,
	.clear_stats = smb2_clear_stats,
	.print_stats = smb2_print_stats,
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	.dump_share_caps = smb2_dump_share_caps,
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	.is_oplock_break = smb2_is_valid_oplock_break,
	.need_neg = smb2_need_neg,
	.negotiate = smb2_negotiate,
	.negotiate_wsize = smb2_negotiate_wsize,
	.negotiate_rsize = smb2_negotiate_rsize,
	.sess_setup = SMB2_sess_setup,
	.logoff = SMB2_logoff,
	.tree_connect = SMB2_tcon,
	.tree_disconnect = SMB2_tdis,
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	.qfs_tcon = smb3_qfs_tcon,
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	.is_path_accessible = smb2_is_path_accessible,
	.can_echo = smb2_can_echo,
	.echo = SMB2_echo,
	.query_path_info = smb2_query_path_info,
	.get_srv_inum = smb2_get_srv_inum,
	.query_file_info = smb2_query_file_info,
	.set_path_size = smb2_set_path_size,
	.set_file_size = smb2_set_file_size,
	.set_file_info = smb2_set_file_info,
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	.set_compression = smb2_set_compression,
1287 1288 1289 1290 1291 1292
	.mkdir = smb2_mkdir,
	.mkdir_setinfo = smb2_mkdir_setinfo,
	.rmdir = smb2_rmdir,
	.unlink = smb2_unlink,
	.rename = smb2_rename_path,
	.create_hardlink = smb2_create_hardlink,
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	.query_symlink = smb2_query_symlink,
1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314
	.open = smb2_open_file,
	.set_fid = smb2_set_fid,
	.close = smb2_close_file,
	.flush = smb2_flush_file,
	.async_readv = smb2_async_readv,
	.async_writev = smb2_async_writev,
	.sync_read = smb2_sync_read,
	.sync_write = smb2_sync_write,
	.query_dir_first = smb2_query_dir_first,
	.query_dir_next = smb2_query_dir_next,
	.close_dir = smb2_close_dir,
	.calc_smb_size = smb2_calc_size,
	.is_status_pending = smb2_is_status_pending,
	.oplock_response = smb2_oplock_response,
	.queryfs = smb2_queryfs,
	.mand_lock = smb2_mand_lock,
	.mand_unlock_range = smb2_unlock_range,
	.push_mand_locks = smb2_push_mandatory_locks,
	.get_lease_key = smb2_get_lease_key,
	.set_lease_key = smb2_set_lease_key,
	.new_lease_key = smb2_new_lease_key,
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	.generate_signingkey = generate_smb3signingkey,
1316
	.calc_signature = smb3_calc_signature,
1317
	.is_read_op = smb21_is_read_op,
1318
	.set_oplock_level = smb3_set_oplock_level,
1319 1320
	.create_lease_buf = smb3_create_lease_buf,
	.parse_lease_buf = smb3_parse_lease_buf,
1321
	.clone_range = smb2_clone_range,
1322
	.validate_negotiate = smb3_validate_negotiate,
1323 1324
};

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struct smb_version_values smb20_values = {
	.version_string = SMB20_VERSION_STRING,
	.protocol_id = SMB20_PROT_ID,
	.req_capabilities = 0, /* MBZ */
	.large_lock_type = 0,
	.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
	.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
	.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
	.header_size = sizeof(struct smb2_hdr),
	.max_header_size = MAX_SMB2_HDR_SIZE,
	.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
	.lock_cmd = SMB2_LOCK,
	.cap_unix = 0,
	.cap_nt_find = SMB2_NT_FIND,
	.cap_large_files = SMB2_LARGE_FILES,
1340 1341
	.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
	.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1342
	.create_lease_size = sizeof(struct create_lease),
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};

1345 1346
struct smb_version_values smb21_values = {
	.version_string = SMB21_VERSION_STRING,
1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359
	.protocol_id = SMB21_PROT_ID,
	.req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
	.large_lock_type = 0,
	.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
	.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
	.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
	.header_size = sizeof(struct smb2_hdr),
	.max_header_size = MAX_SMB2_HDR_SIZE,
	.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
	.lock_cmd = SMB2_LOCK,
	.cap_unix = 0,
	.cap_nt_find = SMB2_NT_FIND,
	.cap_large_files = SMB2_LARGE_FILES,
1360 1361
	.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
	.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1362
	.create_lease_size = sizeof(struct create_lease),
1363 1364 1365 1366 1367 1368
};

struct smb_version_values smb30_values = {
	.version_string = SMB30_VERSION_STRING,
	.protocol_id = SMB30_PROT_ID,
	.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
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	.large_lock_type = 0,
	.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
	.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
	.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1373 1374
	.header_size = sizeof(struct smb2_hdr),
	.max_header_size = MAX_SMB2_HDR_SIZE,
1375
	.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1376
	.lock_cmd = SMB2_LOCK,
1377 1378 1379
	.cap_unix = 0,
	.cap_nt_find = SMB2_NT_FIND,
	.cap_large_files = SMB2_LARGE_FILES,
1380 1381
	.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
	.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1382
	.create_lease_size = sizeof(struct create_lease_v2),
1383
};
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struct smb_version_values smb302_values = {
	.version_string = SMB302_VERSION_STRING,
	.protocol_id = SMB302_PROT_ID,
	.req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
	.large_lock_type = 0,
	.exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
	.shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
	.unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
	.header_size = sizeof(struct smb2_hdr),
	.max_header_size = MAX_SMB2_HDR_SIZE,
	.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
	.lock_cmd = SMB2_LOCK,
	.cap_unix = 0,
	.cap_nt_find = SMB2_NT_FIND,
	.cap_large_files = SMB2_LARGE_FILES,
1400 1401
	.signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
	.signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1402
	.create_lease_size = sizeof(struct create_lease_v2),
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};