s3:libsmb: Add in the core of the libsmb client SMB2 functions.

These create a synchronous cli_smb2_XXX() style interface
designed to plug directly into the libsmb/cliXXXX.c code.

https://bugzilla.samba.org/show_bug.cgi?id=9974

Signed-off-by: Jeremy Allison <jra@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>

1 files changed, 2373 insertions, 0 deletions

diff --git a/source3/libsmb/cli_smb2_fnum.c b/source3/libsmb/cli_smb2_fnum.c
new file mode 100644
index 0000000000..d0b744b626
--- /dev/null
+++ b/source3/libsmb/cli_smb2_fnum.c
@@ -0,0 +1,2373 @@
+/*
+   Unix SMB/CIFS implementation.
+   smb2 lib
+   Copyright (C) Jeremy Allison 2013
+   Copyright (C) Volker Lendecke 2013
+   Copyright (C) Stefan Metzmacher 2013
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   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 for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ This code is a thin wrapper around the existing
+ cli_smb2_XXXX() functions in libcli/smb/smb2cli_XXXXX.c,
+ but allows the handles to be mapped to uint16_t fnums,
+ which are easier for smbclient to use.
+*/
+
+#include "includes.h"
+#include "client.h"
+#include "async_smb.h"
+#include "../libcli/smb/smbXcli_base.h"
+#include "smb2cli.h"
+#include "cli_smb2_fnum.h"
+#include "trans2.h"
+#include "clirap.h"
+#include "../libcli/smb/smb2_create_blob.h"
+#include "libsmb/proto.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "../libcli/security/security.h"
+#include "lib/util_ea.h"
+
+struct smb2_hnd {
+	uint64_t fid_persistent;
+	uint64_t fid_volatile;
+};
+
+/*
+ * Handle mapping code.
+ */
+
+/***************************************************************
+ Allocate a new fnum between 1 and 0xFFFE from an smb2_hnd.
+ Ensures handle is owned by cli struct.
+***************************************************************/
+
+static NTSTATUS map_smb2_handle_to_fnum(struct cli_state *cli,
+				const struct smb2_hnd *ph,	/* In */
+				uint16_t *pfnum)		/* Out */
+{
+	int ret;
+	struct idr_context *idp = cli->smb2.open_handles;
+	struct smb2_hnd *owned_h = talloc_memdup(cli,
+						ph,
+						sizeof(struct smb2_hnd));
+
+	if (owned_h == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	if (idp == NULL) {
+		/* Lazy init */
+		cli->smb2.open_handles = idr_init(cli);
+		if (cli->smb2.open_handles == NULL) {
+			TALLOC_FREE(owned_h);
+			return NT_STATUS_NO_MEMORY;
+		}
+		idp = cli->smb2.open_handles;
+	}
+
+	ret = idr_get_new_above(idp, owned_h, 1, 0xFFFE);
+	if (ret == -1) {
+		TALLOC_FREE(owned_h);
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	*pfnum = (uint16_t)ret;
+	return NT_STATUS_OK;
+}
+
+/***************************************************************
+ Return the smb2_hnd pointer associated with the given fnum.
+***************************************************************/
+
+static NTSTATUS map_fnum_to_smb2_handle(struct cli_state *cli,
+				uint16_t fnum,		/* In */
+				struct smb2_hnd **pph)	/* Out */
+{
+	struct idr_context *idp = cli->smb2.open_handles;
+
+	if (idp == NULL) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	*pph = (struct smb2_hnd *)idr_find(idp, fnum);
+	if (*pph == NULL) {
+		return NT_STATUS_INVALID_HANDLE;
+	}
+	return NT_STATUS_OK;
+}
+
+/***************************************************************
+ Delete the fnum to smb2_hnd mapping. Zeros out handle on
+ successful return.
+***************************************************************/
+
+static NTSTATUS delete_smb2_handle_mapping(struct cli_state *cli,
+				struct smb2_hnd **pph,	/* In */
+				uint16_t fnum)			/* In */
+{
+	struct idr_context *idp = cli->smb2.open_handles;
+	struct smb2_hnd *ph;
+
+	if (idp == NULL) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	ph = (struct smb2_hnd *)idr_find(idp, fnum);
+	if (ph != *pph) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	idr_remove(idp, fnum);
+	TALLOC_FREE(*pph);
+	return NT_STATUS_OK;
+}
+
+/***************************************************************
+ Oplock mapping code.
+***************************************************************/
+
+static uint8_t flags_to_smb2_oplock(uint32_t create_flags)
+{
+	if (create_flags & REQUEST_BATCH_OPLOCK) {
+		return SMB2_OPLOCK_LEVEL_BATCH;
+	} else if (create_flags & REQUEST_OPLOCK) {
+		return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
+	}
+
+	/* create_flags doesn't do a level2 request. */
+	return SMB2_OPLOCK_LEVEL_NONE;
+}
+
+/***************************************************************
+ Small wrapper that allows SMB2 create to return a uint16_t fnum.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_create_fnum(struct cli_state *cli,
+			const char *fname,
+			uint32_t create_flags,
+			uint32_t desired_access,
+			uint32_t file_attributes,
+			uint32_t share_access,
+			uint32_t create_disposition,
+			uint32_t create_options,
+			uint16_t *pfid,
+			struct smb2_create_returns *cr)
+{
+	NTSTATUS status;
+	struct smb2_hnd h;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (cli->backup_intent) {
+		create_options |= FILE_OPEN_FOR_BACKUP_INTENT;
+	}
+
+	/* SMB2 is pickier about pathnames. Ensure it doesn't
+	   start in a '\' */
+	if (*fname == '\\') {
+		fname++;
+	}
+
+	status = smb2cli_create(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				fname,
+				flags_to_smb2_oplock(create_flags),
+				SMB2_IMPERSONATION_IMPERSONATION,
+				desired_access,
+				file_attributes,
+				share_access,
+				create_disposition,
+				create_options,
+				NULL,
+				&h.fid_persistent,
+				&h.fid_volatile,
+				cr);
+
+	if (NT_STATUS_IS_OK(status)) {
+		status = map_smb2_handle_to_fnum(cli, &h, pfid);
+	}
+
+	return status;
+}
+
+/***************************************************************
+ Small wrapper that allows SMB2 close to use a uint16_t fnum.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_close_fnum(struct cli_state *cli, uint16_t fnum)
+{
+	struct smb2_hnd *ph = NULL;
+	NTSTATUS status;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	status = smb2cli_close(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				0,
+				ph->fid_persistent,
+				ph->fid_volatile);
+
+	/* Delete the fnum -> handle mapping. */
+	if (NT_STATUS_IS_OK(status)) {
+		status = delete_smb2_handle_mapping(cli, &ph, fnum);
+	}
+
+	return status;
+}
+
+/***************************************************************
+ Small wrapper that allows SMB2 to create a directory
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_mkdir(struct cli_state *cli, const char *dname)
+{
+	NTSTATUS status;
+	uint16_t fnum;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = cli_smb2_create_fnum(cli,
+			dname,
+			0,			/* create_flags */
+			FILE_READ_ATTRIBUTES,	/* desired_access */
+			FILE_ATTRIBUTE_DIRECTORY, /* file attributes */
+			FILE_SHARE_READ|FILE_SHARE_WRITE, /* share_access */
+			FILE_CREATE,		/* create_disposition */
+			FILE_DIRECTORY_FILE,	/* create_options */
+			&fnum,
+			NULL);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	return cli_smb2_close_fnum(cli, fnum);
+}
+
+/***************************************************************
+ Small wrapper that allows SMB2 to delete a directory
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_rmdir(struct cli_state *cli, const char *dname)
+{
+	NTSTATUS status;
+	uint16_t fnum;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = cli_smb2_create_fnum(cli,
+			dname,
+			0,			/* create_flags */
+			DELETE_ACCESS,		/* desired_access */
+			FILE_ATTRIBUTE_DIRECTORY, /* file attributes */
+			FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, /* share_access */
+			FILE_OPEN,		/* create_disposition */
+			FILE_DIRECTORY_FILE|FILE_DELETE_ON_CLOSE,	/* create_options */
+			&fnum,
+			NULL);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	return cli_smb2_close_fnum(cli, fnum);
+}
+
+/***************************************************************
+ Small wrapper that allows SMB2 to unlink a pathname.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_unlink(struct cli_state *cli, const char *fname)
+{
+	NTSTATUS status;
+	uint16_t fnum;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = cli_smb2_create_fnum(cli,
+			fname,
+			0,			/* create_flags */
+			DELETE_ACCESS,		/* desired_access */
+			FILE_ATTRIBUTE_NORMAL, /* file attributes */
+			FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, /* share_access */
+			FILE_OPEN,		/* create_disposition */
+			FILE_DELETE_ON_CLOSE,	/* create_options */
+			&fnum,
+			NULL);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+	return cli_smb2_close_fnum(cli, fnum);
+}
+
+/***************************************************************
+ Utility function to parse a SMB2_FIND_ID_BOTH_DIRECTORY_INFO reply.
+***************************************************************/
+
+static NTSTATUS parse_finfo_id_both_directory_info(uint8_t *dir_data,
+				uint32_t dir_data_length,
+				struct file_info *finfo,
+				uint32_t *next_offset)
+{
+	size_t namelen = 0;
+	size_t slen = 0;
+	size_t ret = 0;
+
+	if (dir_data_length < 4) {
+		return NT_STATUS_INFO_LENGTH_MISMATCH;
+	}
+
+	*next_offset = IVAL(dir_data, 0);
+
+	if (*next_offset > dir_data_length) {
+		return NT_STATUS_INFO_LENGTH_MISMATCH;
+	}
+
+	if (*next_offset != 0) {
+		/* Ensure we only read what in this record. */
+		dir_data_length = *next_offset;
+	}
+
+	if (dir_data_length < 105) {
+		return NT_STATUS_INFO_LENGTH_MISMATCH;
+	}
+
+	finfo->atime_ts = interpret_long_date((const char *)dir_data + 16);
+	finfo->mtime_ts = interpret_long_date((const char *)dir_data + 24);
+	finfo->ctime_ts = interpret_long_date((const char *)dir_data + 32);
+	finfo->size = IVAL2_TO_SMB_BIG_UINT(dir_data + 40, 0);
+	finfo->mode = CVAL(dir_data + 56, 0);
+	namelen = IVAL(dir_data + 60,0);
+	if (namelen > (dir_data_length - 104)) {
+		return NT_STATUS_INFO_LENGTH_MISMATCH;
+	}
+	slen = SVAL(dir_data + 68, 0);
+	if (slen > 24) {
+		return NT_STATUS_INFO_LENGTH_MISMATCH;
+	}
+	ret = pull_string_talloc(finfo,
+				dir_data,
+				FLAGS2_UNICODE_STRINGS,
+				&finfo->short_name,
+				dir_data + 70,
+				slen,
+				STR_UNICODE);
+	if (ret == (size_t)-1) {
+		/* Bad conversion. */
+		return NT_STATUS_INVALID_NETWORK_RESPONSE;
+	}
+
+	ret = pull_string_talloc(finfo,
+				dir_data,
+				FLAGS2_UNICODE_STRINGS,
+				&finfo->name,
+				dir_data + 104,
+				namelen,
+				STR_UNICODE);
+	if (ret == (size_t)-1) {
+		/* Bad conversion. */
+		return NT_STATUS_INVALID_NETWORK_RESPONSE;
+	}
+	return NT_STATUS_OK;
+}
+
+/*******************************************************************
+ Given a filename - get its directory name
+********************************************************************/
+
+static bool windows_parent_dirname(TALLOC_CTX *mem_ctx,
+				const char *dir,
+				char **parent,
+				const char **name)
+{
+	char *p;
+	ptrdiff_t len;
+
+	p = strrchr_m(dir, '\\'); /* Find final '\\', if any */
+
+	if (p == NULL) {
+		if (!(*parent = talloc_strdup(mem_ctx, "\\"))) {
+			return false;
+		}
+		if (name) {
+			*name = dir;
+		}
+		return true;
+	}
+
+	len = p-dir;
+
+	if (!(*parent = (char *)talloc_memdup(mem_ctx, dir, len+1))) {
+		return false;
+	}
+	(*parent)[len] = '\0';
+
+	if (name) {
+		*name = p+1;
+	}
+	return true;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to list a directory.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_list(struct cli_state *cli,
+			const char *pathname,
+			NTSTATUS (*fn)(const char *,
+				struct file_info *,
+				const char *,
+				void *),
+			void *state)
+{
+	NTSTATUS status;
+	uint16_t fnum = -1;
+	char *parent_dir = NULL;
+	const char *mask = NULL;
+	struct smb2_hnd *ph = NULL;
+	TALLOC_CTX *frame = talloc_stackframe();
+	TALLOC_CTX *subframe = NULL;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	/* Get the directory name. */
+	if (!windows_parent_dirname(frame,
+				pathname,
+				&parent_dir,
+				&mask)) {
+                status = NT_STATUS_NO_MEMORY;
+		goto fail;
+        }
+
+	status = cli_smb2_create_fnum(cli,
+			parent_dir,
+			0,			/* create_flags */
+			SEC_DIR_LIST|SEC_DIR_READ_ATTRIBUTE,/* desired_access */
+			FILE_ATTRIBUTE_DIRECTORY, /* file attributes */
+			FILE_SHARE_READ|FILE_SHARE_WRITE, /* share_access */
+			FILE_OPEN,		/* create_disposition */
+			FILE_DIRECTORY_FILE,	/* create_options */
+			&fnum,
+			NULL);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	do {
+		uint8_t *dir_data = NULL;
+		uint32_t dir_data_length = 0;
+		uint32_t next_offset = 0;
+		subframe = talloc_stackframe();
+
+		status = smb2cli_query_directory(cli->conn,
+					cli->timeout,
+					cli->smb2.session,
+					cli->smb2.tcon,
+					SMB2_FIND_ID_BOTH_DIRECTORY_INFO,
+					0,	/* flags */
+					0,	/* file_index */
+					ph->fid_persistent,
+					ph->fid_volatile,
+					mask,
+					0xffff,
+					subframe,
+					&dir_data,
+					&dir_data_length);
+
+		if (!NT_STATUS_IS_OK(status)) {
+			if (NT_STATUS_EQUAL(status, STATUS_NO_MORE_FILES)) {
+				break;
+			}
+			goto fail;
+		}
+
+		do {
+			struct file_info *finfo = talloc_zero(subframe,
+							struct file_info);
+
+			if (finfo == NULL) {
+				status = NT_STATUS_NO_MEMORY;
+				goto fail;
+			}
+
+			status = parse_finfo_id_both_directory_info(dir_data,
+						dir_data_length,
+						finfo,
+						&next_offset);
+
+			if (!NT_STATUS_IS_OK(status)) {
+				goto fail;
+			}
+
+			status = fn(cli->dfs_mountpoint,
+					finfo,
+					pathname,
+					state);
+
+			if (!NT_STATUS_IS_OK(status)) {
+				break;
+			}
+
+			TALLOC_FREE(finfo);
+
+			/* Move to next entry. */
+			if (next_offset) {
+				dir_data += next_offset;
+				dir_data_length -= next_offset;
+			}
+		} while (next_offset != 0);
+
+		TALLOC_FREE(subframe);
+
+	} while (NT_STATUS_IS_OK(status));
+
+	if (NT_STATUS_EQUAL(status, STATUS_NO_MORE_FILES)) {
+		status = NT_STATUS_OK;
+	}
+
+  fail:
+
+	if (fnum != -1) {
+		cli_smb2_close_fnum(cli, fnum);
+	}
+	TALLOC_FREE(subframe);
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to query a path info (basic level).
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_qpathinfo_basic(struct cli_state *cli,
+				const char *name,
+				SMB_STRUCT_STAT *sbuf,
+				uint32_t *attributes)
+{
+	NTSTATUS status;
+	struct smb2_create_returns cr;
+	uint16_t fnum = -1;
+	size_t namelen = strlen(name);
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	/* SMB2 is pickier about pathnames. Ensure it doesn't
+	   end in a '\' */
+	if (namelen > 0 && name[namelen-1] == '\\') {
+		char *modname = talloc_strdup(talloc_tos(), name);
+		modname[namelen-1] = '\0';
+		name = modname;
+	}
+
+	/* This is commonly used as a 'cd'. Try qpathinfo on
+	   a directory handle first. */
+
+	status = cli_smb2_create_fnum(cli,
+			name,
+			0,			/* create_flags */
+			FILE_READ_ATTRIBUTES,	/* desired_access */
+			FILE_ATTRIBUTE_DIRECTORY, /* file attributes */
+			FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, /* share_access */
+			FILE_OPEN,		/* create_disposition */
+			FILE_DIRECTORY_FILE,	/* create_options */
+			&fnum,
+			&cr);
+
+	if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_A_DIRECTORY)) {
+		/* Maybe a file ? */
+		status = cli_smb2_create_fnum(cli,
+			name,
+			0,			/* create_flags */
+			FILE_READ_ATTRIBUTES,		/* desired_access */
+			0, /* file attributes */
+			FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, /* share_access */
+			FILE_OPEN,		/* create_disposition */
+			0,	/* create_options */
+			&fnum,
+			&cr);
+	}
+
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	cli_smb2_close_fnum(cli, fnum);
+
+	ZERO_STRUCTP(sbuf);
+
+	sbuf->st_ex_atime = nt_time_to_unix_timespec(&cr.last_access_time);
+	sbuf->st_ex_mtime = nt_time_to_unix_timespec(&cr.last_write_time);
+	sbuf->st_ex_ctime = nt_time_to_unix_timespec(&cr.change_time);
+	sbuf->st_ex_size = cr.end_of_file;
+	*attributes = cr.file_attributes;
+
+	return NT_STATUS_OK;
+}
+
+/***************************************************************
+ Helper function for pathname operations.
+***************************************************************/
+
+static NTSTATUS get_fnum_from_path(struct cli_state *cli,
+				const char *name,
+				uint32_t desired_access,
+				uint16_t *pfnum)
+{
+	NTSTATUS status;
+	size_t namelen = strlen(name);
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	/* SMB2 is pickier about pathnames. Ensure it doesn't
+	   end in a '\' */
+	if (namelen > 0 && name[namelen-1] == '\\') {
+		char *modname = talloc_strdup(frame, name);
+		if (modname == NULL) {
+			status = NT_STATUS_NO_MEMORY;
+			goto fail;
+		}
+		modname[namelen-1] = '\0';
+		name = modname;
+	}
+
+	/* Try to open a file handle first. */
+	status = cli_smb2_create_fnum(cli,
+			name,
+			0,			/* create_flags */
+			desired_access,
+			0, /* file attributes */
+			FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, /* share_access */
+			FILE_OPEN,		/* create_disposition */
+			0,	/* create_options */
+			pfnum,
+			NULL);
+
+	if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
+		status = cli_smb2_create_fnum(cli,
+			name,
+			0,			/* create_flags */
+			desired_access,
+			FILE_ATTRIBUTE_DIRECTORY, /* file attributes */
+			FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, /* share_access */
+			FILE_OPEN,		/* create_disposition */
+			FILE_DIRECTORY_FILE,	/* create_options */
+			pfnum,
+			NULL);
+	}
+
+  fail:
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to query a path info (ALTNAME level).
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_qpathinfo_alt_name(struct cli_state *cli,
+				const char *name,
+				fstring alt_name)
+{
+	NTSTATUS status;
+	DATA_BLOB outbuf = data_blob_null;
+	uint16_t fnum = -1;
+	struct smb2_hnd *ph = NULL;
+	uint32_t altnamelen = 0;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = get_fnum_from_path(cli,
+				name,
+				FILE_READ_ATTRIBUTES,
+				&fnum);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* getinfo on the handle with info_type SMB2_GETINFO_FILE (1),
+	   level SMB_FILE_ALTERNATE_NAME_INFORMATION (1021) == SMB2 21 */
+
+	status = smb2cli_query_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				1, /* in_info_type */
+				(SMB_FILE_ALTERNATE_NAME_INFORMATION - 1000), /* in_file_info_class */
+				0xFFFF, /* in_max_output_length */
+				NULL, /* in_input_buffer */
+				0, /* in_additional_info */
+				0, /* in_flags */
+				ph->fid_persistent,
+				ph->fid_volatile,
+				frame,
+				&outbuf);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* Parse the reply. */
+	if (outbuf.length < 4) {
+		status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+		goto fail;
+	}
+
+	altnamelen = IVAL(outbuf.data, 0);
+	if (altnamelen > outbuf.length - 4) {
+		status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+		goto fail;
+	}
+
+	if (altnamelen > 0) {
+		size_t ret = 0;
+		char *short_name = NULL;
+		ret = pull_string_talloc(frame,
+				outbuf.data,
+				FLAGS2_UNICODE_STRINGS,
+				&short_name,
+				outbuf.data + 4,
+				altnamelen,
+				STR_UNICODE);
+		if (ret == (size_t)-1) {
+			/* Bad conversion. */
+			status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+			goto fail;
+		}
+
+	        fstrcpy(alt_name, short_name);
+	} else {
+		alt_name[0] = '\0';
+	}
+
+	status = NT_STATUS_OK;
+
+  fail:
+
+	if (fnum != -1) {
+		cli_smb2_close_fnum(cli, fnum);
+	}
+	TALLOC_FREE(frame);
+	return status;
+}
+
+
+/***************************************************************
+ Wrapper that allows SMB2 to query a fnum info (basic level).
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_qfileinfo_basic(struct cli_state *cli,
+			uint16_t fnum,
+			uint16_t *mode,
+			off_t *size,
+			struct timespec *create_time,
+			struct timespec *access_time,
+			struct timespec *write_time,
+			struct timespec *change_time,
+			SMB_INO_T *ino)
+{
+	NTSTATUS status;
+	DATA_BLOB outbuf = data_blob_null;
+	struct smb2_hnd *ph = NULL;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* getinfo on the handle with info_type SMB2_GETINFO_FILE (1),
+	   level 0x12 (SMB2_FILE_ALL_INFORMATION). */
+
+	status = smb2cli_query_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				1, /* in_info_type */
+				(SMB_FILE_ALL_INFORMATION - 1000), /* in_file_info_class */
+				0xFFFF, /* in_max_output_length */
+				NULL, /* in_input_buffer */
+				0, /* in_additional_info */
+				0, /* in_flags */
+				ph->fid_persistent,
+				ph->fid_volatile,
+				frame,
+				&outbuf);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* Parse the reply. */
+	if (outbuf.length < 0x60) {
+		status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+		goto fail;
+	}
+
+	if (create_time) {
+		*create_time = interpret_long_date((const char *)outbuf.data + 0x0);
+	}
+	if (access_time) {
+		*access_time = interpret_long_date((const char *)outbuf.data + 0x8);
+	}
+	if (write_time) {
+		*write_time = interpret_long_date((const char *)outbuf.data + 0x10);
+	}
+	if (change_time) {
+		*change_time = interpret_long_date((const char *)outbuf.data + 0x18);
+	}
+	if (mode) {
+		uint32_t attr = IVAL(outbuf.data, 0x20);
+		*mode = (uint16_t)attr;
+	}
+	if (size) {
+		uint64_t file_size = BVAL(outbuf.data, 0x30);
+		*size = (off_t)file_size;
+	}
+	if (ino) {
+		uint64_t file_index = BVAL(outbuf.data, 0x40);
+		*ino = (SMB_INO_T)file_index;
+	}
+
+  fail:
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to query an fnum.
+ Implement on top of cli_smb2_qfileinfo_basic().
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_getattrE(struct cli_state *cli,
+			uint16_t fnum,
+			uint16_t *attr,
+			off_t *size,
+			time_t *change_time,
+			time_t *access_time,
+			time_t *write_time)
+{
+	struct timespec access_time_ts;
+	struct timespec write_time_ts;
+	struct timespec change_time_ts;
+	NTSTATUS status = cli_smb2_qfileinfo_basic(cli,
+					fnum,
+					attr,
+					size,
+					NULL,
+					&access_time_ts,
+					&write_time_ts,
+					&change_time_ts,
+                                        NULL);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	if (change_time) {
+		*change_time = change_time_ts.tv_sec;
+	}
+	if (access_time) {
+		*access_time = access_time_ts.tv_sec;
+	}
+	if (write_time) {
+		*write_time = write_time_ts.tv_sec;
+	}
+	return NT_STATUS_OK;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to get pathname attributes.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_getatr(struct cli_state *cli,
+			const char *name,
+			uint16_t *attr,
+			off_t *size,
+			time_t *write_time)
+{
+	NTSTATUS status;
+	uint16_t fnum = -1;
+	struct smb2_hnd *ph = NULL;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = get_fnum_from_path(cli,
+				name,
+				FILE_READ_ATTRIBUTES,
+				&fnum);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+	status = cli_smb2_getattrE(cli,
+				fnum,
+				attr,
+				size,
+				NULL,
+				NULL,
+				write_time);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+  fail:
+
+	if (fnum != -1) {
+		cli_smb2_close_fnum(cli, fnum);
+	}
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to query a pathname info (basic level).
+ Implement on top of cli_smb2_qfileinfo_basic().
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_qpathinfo2(struct cli_state *cli,
+			const char *name,
+			struct timespec *create_time,
+			struct timespec *access_time,
+			struct timespec *write_time,
+			struct timespec *change_time,
+			off_t *size,
+			uint16_t *mode,
+			SMB_INO_T *ino)
+{
+	NTSTATUS status;
+	struct smb2_hnd *ph = NULL;
+	uint16_t fnum = -1;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = get_fnum_from_path(cli,
+					name,
+					FILE_READ_ATTRIBUTES,
+					&fnum);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = cli_smb2_qfileinfo_basic(cli,
+					fnum,
+					mode,
+					size,
+					create_time,
+					access_time,
+					write_time,
+					change_time,
+					ino);
+
+  fail:
+
+	if (fnum != -1) {
+		cli_smb2_close_fnum(cli, fnum);
+	}
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to query pathname streams.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_qpathinfo_streams(struct cli_state *cli,
+				const char *name,
+				TALLOC_CTX *mem_ctx,
+				unsigned int *pnum_streams,
+				struct stream_struct **pstreams)
+{
+	NTSTATUS status;
+	struct smb2_hnd *ph = NULL;
+	uint16_t fnum = -1;
+	DATA_BLOB outbuf = data_blob_null;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = get_fnum_from_path(cli,
+				name,
+				FILE_READ_ATTRIBUTES,
+				&fnum);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* getinfo on the handle with info_type SMB2_GETINFO_FILE (1),
+	   level 22 (SMB2_FILE_STREAM_INFORMATION). */
+
+	status = smb2cli_query_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				1, /* in_info_type */
+				(SMB_FILE_STREAM_INFORMATION - 1000), /* in_file_info_class */
+				0xFFFF, /* in_max_output_length */
+				NULL, /* in_input_buffer */
+				0, /* in_additional_info */
+				0, /* in_flags */
+				ph->fid_persistent,
+				ph->fid_volatile,
+				frame,
+				&outbuf);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* Parse the reply. */
+	if (!parse_streams_blob(mem_ctx,
+				outbuf.data,
+				outbuf.length,
+				pnum_streams,
+				pstreams)) {
+		status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+		goto fail;
+	}
+
+  fail:
+
+	if (fnum != -1) {
+		cli_smb2_close_fnum(cli, fnum);
+	}
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to set pathname attributes.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_setatr(struct cli_state *cli,
+			const char *name,
+			uint16_t attr,
+			time_t mtime)
+{
+	NTSTATUS status;
+	uint16_t fnum = -1;
+	struct smb2_hnd *ph = NULL;
+	uint8_t inbuf_store[40];
+	DATA_BLOB inbuf = data_blob_null;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = get_fnum_from_path(cli,
+				name,
+				FILE_WRITE_ATTRIBUTES,
+				&fnum);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* setinfo on the handle with info_type SMB2_SETINFO_FILE (1),
+	   level 4 (SMB_FILE_BASIC_INFORMATION - 1000). */
+
+	inbuf.data = inbuf_store;
+	inbuf.length = sizeof(inbuf_store);
+	data_blob_clear(&inbuf);
+
+	SIVAL(inbuf.data,32,attr);
+	if (mtime != 0) {
+		put_long_date((char *)inbuf.data + 16,mtime);
+	}
+	/* Set all the other times to -1. */
+	SBVAL(inbuf.data, 0, 0xFFFFFFFFFFFFFFFFLL);
+	SBVAL(inbuf.data, 8, 0xFFFFFFFFFFFFFFFFLL);
+	SBVAL(inbuf.data, 24, 0xFFFFFFFFFFFFFFFFLL);
+
+	status = smb2cli_set_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				1, /* in_info_type */
+				SMB_FILE_BASIC_INFORMATION - 1000, /* in_file_info_class */
+				&inbuf, /* in_input_buffer */
+				0, /* in_additional_info */
+				ph->fid_persistent,
+				ph->fid_volatile);
+  fail:
+
+	if (fnum != -1) {
+		cli_smb2_close_fnum(cli, fnum);
+	}
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to set file handle times.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_setattrE(struct cli_state *cli,
+			uint16_t fnum,
+			time_t change_time,
+			time_t access_time,
+			time_t write_time)
+{
+	NTSTATUS status;
+	struct smb2_hnd *ph = NULL;
+	uint8_t inbuf_store[40];
+	DATA_BLOB inbuf = data_blob_null;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		return status;
+	}
+
+	/* setinfo on the handle with info_type SMB2_SETINFO_FILE (1),
+	   level 4 (SMB_FILE_BASIC_INFORMATION - 1000). */
+
+	inbuf.data = inbuf_store;
+	inbuf.length = sizeof(inbuf_store);
+	data_blob_clear(&inbuf);
+
+	SBVAL(inbuf.data, 0, 0xFFFFFFFFFFFFFFFFLL);
+	if (change_time != 0) {
+		put_long_date((char *)inbuf.data + 24, change_time);
+	}
+	if (access_time != 0) {
+		put_long_date((char *)inbuf.data + 8, access_time);
+	}
+	if (write_time != 0) {
+		put_long_date((char *)inbuf.data + 16, write_time);
+	}
+
+	return smb2cli_set_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				1, /* in_info_type */
+				SMB_FILE_BASIC_INFORMATION - 1000, /* in_file_info_class */
+				&inbuf, /* in_input_buffer */
+				0, /* in_additional_info */
+				ph->fid_persistent,
+				ph->fid_volatile);
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to query disk attributes (size).
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_dskattr(struct cli_state *cli, int *bsize, int *total, int *avail)
+{
+	NTSTATUS status;
+	uint16_t fnum = -1;
+	DATA_BLOB outbuf = data_blob_null;
+	struct smb2_hnd *ph = NULL;
+	uint32_t sectors_per_unit = 0;
+	uint32_t bytes_per_sector = 0;
+	uint64_t total_size = 0;
+	uint64_t size_free = 0;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	/* First open the top level directory. */
+	status = cli_smb2_create_fnum(cli,
+			"",
+			0,			/* create_flags */
+			FILE_READ_ATTRIBUTES,	/* desired_access */
+			FILE_ATTRIBUTE_DIRECTORY, /* file attributes */
+			FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, /* share_access */
+			FILE_OPEN,		/* create_disposition */
+			FILE_DIRECTORY_FILE,	/* create_options */
+			&fnum,
+			NULL);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* getinfo on the returned handle with info_type SMB2_GETINFO_FS (2),
+	   level 3 (SMB_FS_SIZE_INFORMATION). */
+
+	status = smb2cli_query_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				2, /* in_info_type */
+				3, /* in_file_info_class */
+				0xFFFF, /* in_max_output_length */
+				NULL, /* in_input_buffer */
+				0, /* in_additional_info */
+				0, /* in_flags */
+				ph->fid_persistent,
+				ph->fid_volatile,
+				frame,
+				&outbuf);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* Parse the reply. */
+	if (outbuf.length != 24) {
+		status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+		goto fail;
+	}
+
+	total_size = BVAL(outbuf.data, 0);
+	size_free = BVAL(outbuf.data, 8);
+	sectors_per_unit = IVAL(outbuf.data, 16);
+	bytes_per_sector = IVAL(outbuf.data, 20);
+
+	if (bsize) {
+		*bsize = (int)(sectors_per_unit * bytes_per_sector);
+	}
+	if (total) {
+		*total = (int)total_size;
+	}
+	if (avail) {
+		*avail = (int)size_free;
+	}
+
+	status = NT_STATUS_OK;
+
+  fail:
+
+	if (fnum != -1) {
+		cli_smb2_close_fnum(cli, fnum);
+	}
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to query a security descriptor.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_query_security_descriptor(struct cli_state *cli,
+					uint16_t fnum,
+					uint32_t sec_info,
+					TALLOC_CTX *mem_ctx,
+					struct security_descriptor **ppsd)
+{
+	NTSTATUS status;
+	DATA_BLOB outbuf = data_blob_null;
+	struct smb2_hnd *ph = NULL;
+	struct security_descriptor *lsd = NULL;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* getinfo on the returned handle with info_type SMB2_GETINFO_SEC (3) */
+
+	status = smb2cli_query_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				3, /* in_info_type */
+				0, /* in_file_info_class */
+				0xFFFF, /* in_max_output_length */
+				NULL, /* in_input_buffer */
+				sec_info, /* in_additional_info */
+				0, /* in_flags */
+				ph->fid_persistent,
+				ph->fid_volatile,
+				frame,
+				&outbuf);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* Parse the reply. */
+	status = unmarshall_sec_desc(mem_ctx,
+				outbuf.data,
+				outbuf.length,
+				&lsd);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	if (ppsd != NULL) {
+		*ppsd = lsd;
+	} else {
+		TALLOC_FREE(lsd);
+	}
+
+  fail:
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to set a security descriptor.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_set_security_descriptor(struct cli_state *cli,
+					uint16_t fnum,
+					uint32_t sec_info,
+					const struct security_descriptor *sd)
+{
+	NTSTATUS status;
+	DATA_BLOB inbuf = data_blob_null;
+	struct smb2_hnd *ph = NULL;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = marshall_sec_desc(frame,
+				sd,
+				&inbuf.data,
+				&inbuf.length);
+
+        if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+        }
+
+	/* setinfo on the returned handle with info_type SMB2_SETINFO_SEC (3) */
+
+	status = smb2cli_set_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				3, /* in_info_type */
+				0, /* in_file_info_class */
+				&inbuf, /* in_input_buffer */
+				sec_info, /* in_additional_info */
+				ph->fid_persistent,
+				ph->fid_volatile);
+
+  fail:
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to rename a file.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_rename(struct cli_state *cli,
+			const char *fname_src,
+			const char *fname_dst)
+{
+	NTSTATUS status;
+	DATA_BLOB inbuf = data_blob_null;
+	uint16_t fnum = -1;
+	struct smb2_hnd *ph = NULL;
+	smb_ucs2_t *converted_str = NULL;
+	size_t converted_size_bytes = 0;
+	size_t namelen = 0;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = get_fnum_from_path(cli,
+				fname_src,
+				DELETE_ACCESS,
+				&fnum);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* SMB2 is pickier about pathnames. Ensure it doesn't
+	   start in a '\' */
+	if (*fname_dst == '\\') {
+		fname_dst++;
+	}
+
+	/* SMB2 is pickier about pathnames. Ensure it doesn't
+	   end in a '\' */
+	namelen = strlen(fname_dst);
+	if (namelen > 0 && fname_dst[namelen-1] == '\\') {
+		char *modname = talloc_strdup(frame, fname_dst);
+		modname[namelen-1] = '\0';
+		fname_dst = modname;
+	}
+
+	if (!push_ucs2_talloc(frame,
+				&converted_str,
+				fname_dst,
+				&converted_size_bytes)) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	/* W2K8 insists the dest name is not null
+	   terminated. Remove the last 2 zero bytes
+	   and reduce the name length. */
+
+	if (converted_size_bytes < 2) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+	converted_size_bytes -= 2;
+
+	inbuf = data_blob_talloc_zero(frame,
+				20 + converted_size_bytes);
+	if (inbuf.data == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto fail;
+	}
+
+	SIVAL(inbuf.data, 16, converted_size_bytes);
+	memcpy(inbuf.data + 20, converted_str, converted_size_bytes);
+
+	/* setinfo on the returned handle with info_type SMB2_GETINFO_FILE (1),
+	   level SMB2_FILE_RENAME_INFORMATION (SMB_FILE_RENAME_INFORMATION - 1000) */
+
+	status = smb2cli_set_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				1, /* in_info_type */
+				SMB_FILE_RENAME_INFORMATION - 1000, /* in_file_info_class */
+				&inbuf, /* in_input_buffer */
+				0, /* in_additional_info */
+				ph->fid_persistent,
+				ph->fid_volatile);
+
+  fail:
+
+	if (fnum != -1) {
+		cli_smb2_close_fnum(cli, fnum);
+	}
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to set an EA on a fnum.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_set_ea_fnum(struct cli_state *cli,
+			uint16_t fnum,
+			const char *ea_name,
+			const char *ea_val,
+			size_t ea_len)
+{
+	NTSTATUS status;
+	DATA_BLOB inbuf = data_blob_null;
+	size_t bloblen = 0;
+	char *ea_name_ascii = NULL;
+	size_t namelen = 0;
+	struct smb2_hnd *ph = NULL;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* Marshall the SMB2 EA data. */
+	if (ea_len > 0xFFFF) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (!push_ascii_talloc(frame,
+				&ea_name_ascii,
+				ea_name,
+				&namelen)) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (namelen < 2 || namelen > 0xFF) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	bloblen = 8 + ea_len + namelen;
+	/* Round up to a 4 byte boundary. */
+	bloblen = ((bloblen + 3)&~3);
+
+	inbuf = data_blob_talloc_zero(frame, bloblen);
+	if (inbuf.data == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto fail;
+	}
+	/* namelen doesn't include the NULL byte. */
+	SCVAL(inbuf.data, 5, namelen - 1);
+	SSVAL(inbuf.data, 6, ea_len);
+	memcpy(inbuf.data + 8, ea_name_ascii, namelen);
+	memcpy(inbuf.data + 8 + namelen, ea_val, ea_len);
+
+	/* setinfo on the handle with info_type SMB2_SETINFO_FILE (1),
+	   level 15 (SMB_FILE_FULL_EA_INFORMATION - 1000). */
+
+	status = smb2cli_set_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				1, /* in_info_type */
+				SMB_FILE_FULL_EA_INFORMATION - 1000, /* in_file_info_class */
+				&inbuf, /* in_input_buffer */
+				0, /* in_additional_info */
+				ph->fid_persistent,
+				ph->fid_volatile);
+
+  fail:
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to set an EA on a pathname.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_set_ea_path(struct cli_state *cli,
+			const char *name,
+			const char *ea_name,
+			const char *ea_val,
+			size_t ea_len)
+{
+	NTSTATUS status;
+	uint16_t fnum = -1;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = get_fnum_from_path(cli,
+				name,
+				FILE_WRITE_EA,
+				&fnum);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = cli_set_ea_fnum(cli,
+				fnum,
+				ea_name,
+				ea_val,
+				ea_len);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+  fail:
+
+	if (fnum != -1) {
+		cli_smb2_close_fnum(cli, fnum);
+	}
+
+	return status;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 to get an EA list on a pathname.
+ Synchronous only.
+***************************************************************/
+
+NTSTATUS cli_smb2_get_ea_list_path(struct cli_state *cli,
+				const char *name,
+				TALLOC_CTX *ctx,
+				size_t *pnum_eas,
+				struct ea_struct **pea_array)
+{
+	NTSTATUS status;
+	uint16_t fnum = -1;
+	DATA_BLOB outbuf = data_blob_null;
+	struct smb2_hnd *ph = NULL;
+	struct ea_list *ea_list = NULL;
+	struct ea_list *eal = NULL;
+	size_t ea_count = 0;
+	TALLOC_CTX *frame = talloc_stackframe();
+
+	*pnum_eas = 0;
+	*pea_array = NULL;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	status = get_fnum_from_path(cli,
+				name,
+				FILE_READ_EA,
+				&fnum);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&ph);
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* getinfo on the handle with info_type SMB2_GETINFO_FILE (1),
+	   level 15 (SMB_FILE_FULL_EA_INFORMATION - 1000). */
+
+	status = smb2cli_query_info(cli->conn,
+				cli->timeout,
+				cli->smb2.session,
+				cli->smb2.tcon,
+				1, /* in_info_type */
+				SMB_FILE_FULL_EA_INFORMATION - 1000, /* in_file_info_class */
+				0xFFFF, /* in_max_output_length */
+				NULL, /* in_input_buffer */
+				0, /* in_additional_info */
+				0, /* in_flags */
+				ph->fid_persistent,
+				ph->fid_volatile,
+				frame,
+				&outbuf);
+
+	if (!NT_STATUS_IS_OK(status)) {
+		goto fail;
+	}
+
+	/* Parse the reply. */
+	ea_list = read_nttrans_ea_list(ctx,
+				(const char *)outbuf.data,
+				outbuf.length);
+	if (ea_list == NULL) {
+		status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+		goto fail;
+	}
+
+	/* Convert to an array. */
+	for (eal = ea_list; eal; eal = eal->next) {
+		ea_count++;
+	}
+
+	if (ea_count) {
+		*pea_array = talloc_array(ctx, struct ea_struct, ea_count);
+		if (*pea_array == NULL) {
+			status = NT_STATUS_NO_MEMORY;
+			goto fail;
+		}
+		ea_count = 0;
+		for (eal = ea_list; eal; eal = eal->next) {
+			(*pea_array)[ea_count++] = ea_list->ea;
+		}
+		*pnum_eas = ea_count;
+	}
+
+  fail:
+
+	TALLOC_FREE(frame);
+	return status;
+}
+
+struct cli_smb2_read_state {
+	struct tevent_context *ev;
+	struct cli_state *cli;
+	struct smb2_hnd *ph;
+	uint64_t start_offset;
+	uint32_t size;
+	uint32_t received;
+	uint8_t *buf;
+};
+
+static void cli_smb2_read_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_smb2_read_send(TALLOC_CTX *mem_ctx,
+				struct tevent_context *ev,
+				struct cli_state *cli,
+				uint16_t fnum,
+				off_t offset,
+				size_t size)
+{
+	NTSTATUS status;
+	struct tevent_req *req, *subreq;
+	struct cli_smb2_read_state *state;
+
+	req = tevent_req_create(mem_ctx, &state, struct cli_smb2_read_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->ev = ev;
+	state->cli = cli;
+	state->start_offset = (uint64_t)offset;
+	state->size = (uint32_t)size;
+	state->received = 0;
+	state->buf = NULL;
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&state->ph);
+	if (tevent_req_nterror(req, status)) {
+		return tevent_req_post(req, ev);
+	}
+
+	subreq = smb2cli_read_send(state,
+				state->ev,
+				state->cli->conn,
+				state->cli->timeout,
+				state->cli->smb2.session,
+				state->cli->smb2.tcon,
+				state->size,
+				state->start_offset,
+				state->ph->fid_persistent,
+				state->ph->fid_volatile,
+				0, /* minimum_count */
+				0); /* remaining_bytes */
+
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, cli_smb2_read_done, req);
+	return req;
+}
+
+static void cli_smb2_read_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct cli_smb2_read_state *state = tevent_req_data(
+		req, struct cli_smb2_read_state);
+	NTSTATUS status;
+
+	status = smb2cli_read_recv(subreq, state,
+				   &state->buf, &state->received);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	if (state->received > state->size) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+		return;
+	}
+
+	tevent_req_done(req);
+}
+
+NTSTATUS cli_smb2_read_recv(struct tevent_req *req,
+				ssize_t *received,
+				uint8_t **rcvbuf)
+{
+	NTSTATUS status;
+	struct cli_smb2_read_state *state = tevent_req_data(
+				req, struct cli_smb2_read_state);
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	/*
+	 * As in cli_read_andx_recv() rcvbuf is talloced from the request, so
+	 * better make sure that you copy it away before you talloc_free(req).
+	 * "rcvbuf" is NOT a talloc_ctx of its own, so do not talloc_move it!
+	 */
+	*received = (ssize_t)state->received;
+	*rcvbuf = state->buf;
+	return NT_STATUS_OK;
+}
+
+struct cli_smb2_write_state {
+	struct tevent_context *ev;
+	struct cli_state *cli;
+	struct smb2_hnd *ph;
+	uint32_t flags;
+	const uint8_t *buf;
+	uint64_t offset;
+	uint32_t size;
+	uint32_t written;
+};
+
+static void cli_smb2_write_written(struct tevent_req *req);
+
+struct tevent_req *cli_smb2_write_send(TALLOC_CTX *mem_ctx,
+					struct tevent_context *ev,
+					struct cli_state *cli,
+					uint16_t fnum,
+					uint16_t mode,
+					const uint8_t *buf,
+					off_t offset,
+					size_t size)
+{
+	NTSTATUS status;
+	struct tevent_req *req, *subreq = NULL;
+	struct cli_smb2_write_state *state = NULL;
+
+	req = tevent_req_create(mem_ctx, &state, struct cli_smb2_write_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->ev = ev;
+	state->cli = cli;
+	/* Both SMB1 and SMB2 use 1 in the following meaning write-through. */
+	state->flags = (uint32_t)mode;
+	state->buf = buf;
+	state->offset = (uint64_t)offset;
+	state->size = (uint32_t)size;
+	state->written = 0;
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&state->ph);
+	if (tevent_req_nterror(req, status)) {
+		return tevent_req_post(req, ev);
+	}
+
+	subreq = smb2cli_write_send(state,
+				state->ev,
+				state->cli->conn,
+				state->cli->timeout,
+				state->cli->smb2.session,
+				state->cli->smb2.tcon,
+				state->size,
+				state->offset,
+				state->ph->fid_persistent,
+				state->ph->fid_volatile,
+				0, /* remaining_bytes */
+				state->flags, /* flags */
+				state->buf);
+
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, cli_smb2_write_written, req);
+	return req;
+}
+
+static void cli_smb2_write_written(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct cli_smb2_write_state *state = tevent_req_data(
+		req, struct cli_smb2_write_state);
+        NTSTATUS status;
+	uint32_t written;
+
+	status = smb2cli_write_recv(subreq, &written);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	state->written = written;
+
+	tevent_req_done(req);
+}
+
+NTSTATUS cli_smb2_write_recv(struct tevent_req *req,
+			     size_t *pwritten)
+{
+	struct cli_smb2_write_state *state = tevent_req_data(
+		req, struct cli_smb2_write_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	if (pwritten != NULL) {
+		*pwritten = (size_t)state->written;
+	}
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}
+
+/***************************************************************
+ Wrapper that allows SMB2 async write using an fnum.
+ This is mostly cut-and-paste from Volker's code inside
+ source3/libsmb/clireadwrite.c, adapted for SMB2.
+
+ Done this way so I can reuse all the logic inside cli_push()
+ for free :-).
+***************************************************************/
+
+struct cli_smb2_writeall_state {
+	struct tevent_context *ev;
+	struct cli_state *cli;
+	struct smb2_hnd *ph;
+	uint32_t flags;
+	const uint8_t *buf;
+	uint64_t offset;
+	uint32_t size;
+	uint32_t written;
+};
+
+static void cli_smb2_writeall_written(struct tevent_req *req);
+
+struct tevent_req *cli_smb2_writeall_send(TALLOC_CTX *mem_ctx,
+					struct tevent_context *ev,
+					struct cli_state *cli,
+					uint16_t fnum,
+					uint16_t mode,
+					const uint8_t *buf,
+					off_t offset,
+					size_t size)
+{
+	NTSTATUS status;
+	struct tevent_req *req, *subreq = NULL;
+	struct cli_smb2_writeall_state *state = NULL;
+	uint32_t to_write;
+	uint32_t max_size;
+	bool ok;
+
+	req = tevent_req_create(mem_ctx, &state, struct cli_smb2_writeall_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->ev = ev;
+	state->cli = cli;
+	/* Both SMB1 and SMB2 use 1 in the following meaning write-through. */
+	state->flags = (uint32_t)mode;
+	state->buf = buf;
+	state->offset = (uint64_t)offset;
+	state->size = (uint32_t)size;
+	state->written = 0;
+
+	status = map_fnum_to_smb2_handle(cli,
+					fnum,
+					&state->ph);
+	if (tevent_req_nterror(req, status)) {
+		return tevent_req_post(req, ev);
+	}
+
+	to_write = state->size;
+	max_size = smb2cli_conn_max_write_size(state->cli->conn);
+	to_write = MIN(max_size, to_write);
+	ok = smb2cli_conn_req_possible(state->cli->conn, &max_size);
+	if (ok) {
+		to_write = MIN(max_size, to_write);
+	}
+
+	subreq = smb2cli_write_send(state,
+				state->ev,
+				state->cli->conn,
+				state->cli->timeout,
+				state->cli->smb2.session,
+				state->cli->smb2.tcon,
+				to_write,
+				state->offset,
+				state->ph->fid_persistent,
+				state->ph->fid_volatile,
+				0, /* remaining_bytes */
+				state->flags, /* flags */
+				state->buf + state->written);
+
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, cli_smb2_writeall_written, req);
+	return req;
+}
+
+static void cli_smb2_writeall_written(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct cli_smb2_writeall_state *state = tevent_req_data(
+		req, struct cli_smb2_writeall_state);
+        NTSTATUS status;
+	uint32_t written, to_write;
+	uint32_t max_size;
+	bool ok;
+
+	status = smb2cli_write_recv(subreq, &written);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	state->written += written;
+
+	if (state->written > state->size) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+		return;
+	}
+
+	to_write = state->size - state->written;
+
+	if (to_write == 0) {
+		tevent_req_done(req);
+		return;
+	}
+
+	max_size = smb2cli_conn_max_write_size(state->cli->conn);
+	to_write = MIN(max_size, to_write);
+	ok = smb2cli_conn_req_possible(state->cli->conn, &max_size);
+	if (ok) {
+		to_write = MIN(max_size, to_write);
+	}
+
+	subreq = smb2cli_write_send(state,
+				state->ev,
+				state->cli->conn,
+				state->cli->timeout,
+				state->cli->smb2.session,
+				state->cli->smb2.tcon,
+				to_write,
+				state->offset + state->written,
+				state->ph->fid_persistent,
+				state->ph->fid_volatile,
+				0, /* remaining_bytes */
+				state->flags, /* flags */
+				state->buf + state->written);
+
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, cli_smb2_writeall_written, req);
+}
+
+NTSTATUS cli_smb2_writeall_recv(struct tevent_req *req,
+				size_t *pwritten)
+{
+	struct cli_smb2_writeall_state *state = tevent_req_data(
+		req, struct cli_smb2_writeall_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	if (pwritten != NULL) {
+		*pwritten = (size_t)state->written;
+	}
+	return NT_STATUS_OK;
+}