CIFS: Query SMB2 inode info (be4cb9e3) · Commits · e / devices / android_kernel_fairphone_FP5

fs/cifs/Makefile

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -17,4 +17,4 @@ cifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
	cifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o		cifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o

	cifs-$(CONFIG_CIFS_SMB2) += smb2ops.o smb2maperror.o smb2transport.o \		cifs-$(CONFIG_CIFS_SMB2) += smb2ops.o smb2maperror.o smb2transport.o \
	smb2misc.o smb2pdu.o		smb2misc.o smb2pdu.o smb2inode.o

fs/cifs/smb2glob.h

0 → 100644

+44 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* fs/cifs/smb2glob.h
			*
			* Definitions for various global variables and structures
			*
			* Copyright (C) International Business Machines Corp., 2002, 2011
			* Etersoft, 2012
			* Author(s): Steve French (sfrench@us.ibm.com)
			* Jeremy Allison (jra@samba.org)
			* Pavel Shilovsky (pshilovsky@samba.org) 2012
			*
			* This library is free software; you can redistribute it and/or modify
			* it under the terms of the GNU Lesser General Public License as published
			* by the Free Software Foundation; either version 2.1 of the License, or
			* (at your option) any later version.
			*
			* 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.
			*
			*/
			#ifndef _SMB2_GLOB_H
			#define _SMB2_GLOB_H

			/*
			*****************************************************************
			* Constants go here
			*****************************************************************
			*/

			/*
			* Identifiers for functions that use the open, operation, close pattern
			* in smb2inode.c:smb2_open_op_close()
			*/
			#define SMB2_OP_SET_DELETE 1
			#define SMB2_OP_SET_INFO 2
			#define SMB2_OP_QUERY_INFO 3
			#define SMB2_OP_QUERY_DIR 4
			#define SMB2_OP_MKDIR 5
			#define SMB2_OP_RENAME 6
			#define SMB2_OP_DELETE 7

			#endif /* _SMB2_GLOB_H */

fs/cifs/smb2inode.c

0 → 100644

+124 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* fs/cifs/smb2inode.c
			*
			* Copyright (C) International Business Machines Corp., 2002, 2011
			* Etersoft, 2012
			* Author(s): Pavel Shilovsky (pshilovsky@samba.org),
			* Steve French (sfrench@us.ibm.com)
			*
			* This library is free software; you can redistribute it and/or modify
			* it under the terms of the GNU Lesser General Public License as published
			* by the Free Software Foundation; either version 2.1 of the License, or
			* (at your option) any later version.
			*
			* 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
			*/
			#include <linux/fs.h>
			#include <linux/stat.h>
			#include <linux/slab.h>
			#include <linux/pagemap.h>
			#include <asm/div64.h>
			#include "cifsfs.h"
			#include "cifspdu.h"
			#include "cifsglob.h"
			#include "cifsproto.h"
			#include "cifs_debug.h"
			#include "cifs_fs_sb.h"
			#include "cifs_unicode.h"
			#include "fscache.h"
			#include "smb2glob.h"
			#include "smb2pdu.h"
			#include "smb2proto.h"

			static int
			smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
			struct cifs_sb_info cifs_sb, const char full_path,
			__u32 desired_access, __u32 create_disposition,
			__u32 file_attributes, __u32 create_options,
			void *data, int command)
			{
			int rc, tmprc = 0;
			u64 persistent_fid, volatile_fid;
			__le16 *utf16_path;

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

			rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
			desired_access, create_disposition, file_attributes,
			create_options);
			if (rc) {
			kfree(utf16_path);
			return rc;
			}

			switch (command) {
			case SMB2_OP_DELETE:
			break;
			case SMB2_OP_QUERY_INFO:
			tmprc = SMB2_query_info(xid, tcon, persistent_fid,
			volatile_fid,
			(struct smb2_file_all_info *)data);
			break;
			case SMB2_OP_MKDIR:
			/*
			* Directories are created through parameters in the
			* SMB2_open() call.
			*/
			break;
			default:
			cERROR(1, "Invalid command");
			break;
			}

			rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid);
			if (tmprc)
			rc = tmprc;
			kfree(utf16_path);
			return rc;
			}

			static void
			move_smb2_info_to_cifs(FILE_ALL_INFO dst, struct smb2_file_all_info src)
			{
			memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
			dst->CurrentByteOffset = src->CurrentByteOffset;
			dst->Mode = src->Mode;
			dst->AlignmentRequirement = src->AlignmentRequirement;
			dst->IndexNumber1 = 0; /* we don't use it */
			}

			int
			smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
			struct cifs_sb_info cifs_sb, const char full_path,
			FILE_ALL_INFO data, bool adjust_tz)
			{
			int rc;
			struct smb2_file_all_info *smb2_data;

			*adjust_tz = false;

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

			rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path,
			FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0,
			smb2_data, SMB2_OP_QUERY_INFO);
			if (rc)
			goto out;

			move_smb2_info_to_cifs(data, smb2_data);
			out:
			kfree(smb2_data);
			return rc;
			}

fs/cifs/smb2misc.c

+6 −1

Original line number	Original line	Diff line number	Diff line
	@@ -235,8 +235,13 @@ smb2_get_data_area_len(int off, int len, struct smb2_hdr *hdr)
	*len = le32_to_cpu(		*len = le32_to_cpu(
	((struct smb2_create_rsp *)hdr)->CreateContextsLength);		((struct smb2_create_rsp *)hdr)->CreateContextsLength);
	break;		break;
	case SMB2_READ:
	case SMB2_QUERY_INFO:		case SMB2_QUERY_INFO:
			*off = le16_to_cpu(
			((struct smb2_query_info_rsp *)hdr)->OutputBufferOffset);
			*len = le32_to_cpu(
			((struct smb2_query_info_rsp *)hdr)->OutputBufferLength);
			break;
			case SMB2_READ:
	case SMB2_QUERY_DIRECTORY:		case SMB2_QUERY_DIRECTORY:
	case SMB2_IOCTL:		case SMB2_IOCTL:
	case SMB2_CHANGE_NOTIFY:		case SMB2_CHANGE_NOTIFY:

fs/cifs/smb2ops.c

+11 −0

Original line number	Original line	Diff line number	Diff line
	@@ -181,6 +181,15 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
	return rc;		return rc;
	}		}

			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;
			}

	struct smb_version_operations smb21_operations = {		struct smb_version_operations smb21_operations = {
	.setup_request = smb2_setup_request,		.setup_request = smb2_setup_request,
	.check_receive = smb2_check_receive,		.check_receive = smb2_check_receive,
	@@ -199,6 +208,8 @@ struct smb_version_operations smb21_operations = {
	.tree_connect = SMB2_tcon,		.tree_connect = SMB2_tcon,
	.tree_disconnect = SMB2_tdis,		.tree_disconnect = SMB2_tdis,
	.is_path_accessible = smb2_is_path_accessible,		.is_path_accessible = smb2_is_path_accessible,
			.query_path_info = smb2_query_path_info,
			.get_srv_inum = smb2_get_srv_inum,
	};		};

	struct smb_version_values smb21_values = {		struct smb_version_values smb21_values = {