87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/*
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* fs/cifs/smb2file.c
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*
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* Copyright (C) International Business Machines Corp., 2002, 2011
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* Author(s): Steve French (sfrench@us.ibm.com),
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* Pavel Shilovsky ((pshilovsky@samba.org) 2012
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/fs.h>
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#include <linux/stat.h>
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#include <linux/slab.h>
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#include <linux/pagemap.h>
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#include <asm/div64.h>
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#include "cifsfs.h"
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#include "cifspdu.h"
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#include "cifsglob.h"
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#include "cifsproto.h"
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#include "cifs_debug.h"
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#include "cifs_fs_sb.h"
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#include "cifs_unicode.h"
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#include "fscache.h"
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#include "smb2proto.h"
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int
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smb2_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *path,
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int disposition, int desired_access, int create_options,
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struct cifs_fid *fid, __u32 *oplock, FILE_ALL_INFO *buf,
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struct cifs_sb_info *cifs_sb)
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{
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int rc;
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__le16 *smb2_path;
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struct smb2_file_all_info *smb2_data = NULL;
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smb2_path = cifs_convert_path_to_utf16(path, cifs_sb);
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if (smb2_path == NULL) {
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rc = -ENOMEM;
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goto out;
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}
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smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
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GFP_KERNEL);
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if (smb2_data == NULL) {
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rc = -ENOMEM;
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goto out;
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}
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desired_access |= FILE_READ_ATTRIBUTES;
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rc = SMB2_open(xid, tcon, smb2_path, &fid->persistent_fid,
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&fid->volatile_fid, desired_access, disposition,
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0, 0, smb2_data);
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if (rc)
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goto out;
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if (buf) {
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/* open response does not have IndexNumber field - get it */
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rc = SMB2_get_srv_num(xid, tcon, fid->persistent_fid,
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fid->volatile_fid,
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&smb2_data->IndexNumber);
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if (rc) {
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/* let get_inode_info disable server inode numbers */
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smb2_data->IndexNumber = 0;
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rc = 0;
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}
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move_smb2_info_to_cifs(buf, smb2_data);
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}
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out:
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*oplock = 0;
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kfree(smb2_data);
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kfree(smb2_path);
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return rc;
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}
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