258 строки
7.1 KiB
C
258 строки
7.1 KiB
C
/*
|
|
* 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;
|
|
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
|
|
|
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, &oplock, NULL);
|
|
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;
|
|
case SMB2_OP_RENAME:
|
|
tmprc = SMB2_rename(xid, tcon, persistent_fid, volatile_fid,
|
|
(__le16 *)data);
|
|
break;
|
|
case SMB2_OP_HARDLINK:
|
|
tmprc = SMB2_set_hardlink(xid, tcon, persistent_fid,
|
|
volatile_fid, (__le16 *)data);
|
|
break;
|
|
case SMB2_OP_SET_EOF:
|
|
tmprc = SMB2_set_eof(xid, tcon, persistent_fid, volatile_fid,
|
|
current->tgid, (__le64 *)data);
|
|
break;
|
|
case SMB2_OP_SET_INFO:
|
|
tmprc = SMB2_set_info(xid, tcon, persistent_fid, volatile_fid,
|
|
(FILE_BASIC_INFO *)data);
|
|
break;
|
|
default:
|
|
cifs_dbg(VFS, "Invalid command\n");
|
|
break;
|
|
}
|
|
|
|
rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid);
|
|
if (tmprc)
|
|
rc = tmprc;
|
|
kfree(utf16_path);
|
|
return rc;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
int
|
|
smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
return smb2_open_op_close(xid, tcon, cifs_sb, name,
|
|
FILE_WRITE_ATTRIBUTES, FILE_CREATE, 0,
|
|
CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR);
|
|
}
|
|
|
|
void
|
|
smb2_mkdir_setinfo(struct inode *inode, const char *name,
|
|
struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
|
|
const unsigned int xid)
|
|
{
|
|
FILE_BASIC_INFO data;
|
|
struct cifsInodeInfo *cifs_i;
|
|
u32 dosattrs;
|
|
int tmprc;
|
|
|
|
memset(&data, 0, sizeof(data));
|
|
cifs_i = CIFS_I(inode);
|
|
dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
|
|
data.Attributes = cpu_to_le32(dosattrs);
|
|
tmprc = smb2_open_op_close(xid, tcon, cifs_sb, name,
|
|
FILE_WRITE_ATTRIBUTES, FILE_CREATE, 0,
|
|
CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO);
|
|
if (tmprc == 0)
|
|
cifs_i->cifsAttrs = dosattrs;
|
|
}
|
|
|
|
int
|
|
smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
|
|
0, CREATE_NOT_FILE | CREATE_DELETE_ON_CLOSE,
|
|
NULL, SMB2_OP_DELETE);
|
|
}
|
|
|
|
int
|
|
smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
|
|
0, CREATE_DELETE_ON_CLOSE, NULL,
|
|
SMB2_OP_DELETE);
|
|
}
|
|
|
|
static int
|
|
smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *from_name, const char *to_name,
|
|
struct cifs_sb_info *cifs_sb, __u32 access, int command)
|
|
{
|
|
__le16 *smb2_to_name = NULL;
|
|
int rc;
|
|
|
|
smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
|
|
if (smb2_to_name == NULL) {
|
|
rc = -ENOMEM;
|
|
goto smb2_rename_path;
|
|
}
|
|
|
|
rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, access,
|
|
FILE_OPEN, 0, 0, smb2_to_name, command);
|
|
smb2_rename_path:
|
|
kfree(smb2_to_name);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *from_name, const char *to_name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
|
|
DELETE, SMB2_OP_RENAME);
|
|
}
|
|
|
|
int
|
|
smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *from_name, const char *to_name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
|
|
FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK);
|
|
}
|
|
|
|
int
|
|
smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *full_path, __u64 size,
|
|
struct cifs_sb_info *cifs_sb, bool set_alloc)
|
|
{
|
|
__le64 eof = cpu_to_le64(size);
|
|
return smb2_open_op_close(xid, tcon, cifs_sb, full_path,
|
|
FILE_WRITE_DATA, FILE_OPEN, 0, 0, &eof,
|
|
SMB2_OP_SET_EOF);
|
|
}
|
|
|
|
int
|
|
smb2_set_file_info(struct inode *inode, const char *full_path,
|
|
FILE_BASIC_INFO *buf, const unsigned int xid)
|
|
{
|
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
|
|
struct tcon_link *tlink;
|
|
int rc;
|
|
|
|
tlink = cifs_sb_tlink(cifs_sb);
|
|
if (IS_ERR(tlink))
|
|
return PTR_ERR(tlink);
|
|
rc = smb2_open_op_close(xid, tlink_tcon(tlink), cifs_sb, full_path,
|
|
FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, 0, buf,
|
|
SMB2_OP_SET_INFO);
|
|
cifs_put_tlink(tlink);
|
|
return rc;
|
|
}
|