CIFS: Query SMB2 inode info (be4cb9e3) · Commits · EulixOS / Software / Kernel

fs/cifs/Makefile

+1 −1

Original line number	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_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	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	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	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(
		((struct smb2_create_rsp *)hdr)->CreateContextsLength);
		break;
		case SMB2_READ:
		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_IOCTL:
		case SMB2_CHANGE_NOTIFY:

fs/cifs/smb2ops.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -181,6 +181,15 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
		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 = {
		.setup_request = smb2_setup_request,
		.check_receive = smb2_check_receive,
		@@ -199,6 +208,8 @@ struct smb_version_operations smb21_operations = {
		.tree_connect = SMB2_tcon,
		.tree_disconnect = SMB2_tdis,
		.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 = {