4 * Copyright (C) International Business Machines Corp., 2002, 2011
6 * Author(s): Pavel Shilovsky (pshilovsky@samba.org),
7 * Steve French (sfrench@us.ibm.com)
9 * This library is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as published
11 * by the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
17 * the GNU Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include <linux/stat.h>
25 #include <linux/slab.h>
26 #include <linux/pagemap.h>
27 #include <asm/div64.h>
31 #include "cifsproto.h"
32 #include "cifs_debug.h"
33 #include "cifs_fs_sb.h"
34 #include "cifs_unicode.h"
38 #include "smb2proto.h"
41 smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
42 struct cifs_sb_info *cifs_sb, const char *full_path,
43 __u32 desired_access, __u32 create_disposition,
44 __u32 create_options, void *data, int command)
47 __le16 *utf16_path = NULL;
48 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
49 struct cifs_open_parms oparms;
51 bool use_cached_root_handle = false;
53 if ((strcmp(full_path, "") == 0) && (create_options == 0) &&
54 (desired_access == FILE_READ_ATTRIBUTES) &&
55 (create_disposition == FILE_OPEN) &&
56 (tcon->nohandlecache == false)) {
57 rc = open_shroot(xid, tcon, &fid);
59 use_cached_root_handle = true;
62 if (use_cached_root_handle == false) {
63 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
68 oparms.desired_access = desired_access;
69 oparms.disposition = create_disposition;
70 oparms.create_options = create_options;
72 oparms.reconnect = false;
74 rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL,
85 case SMB2_OP_QUERY_INFO:
86 tmprc = SMB2_query_info(xid, tcon, fid.persistent_fid,
88 (struct smb2_file_all_info *)data);
92 * Directories are created through parameters in the
97 tmprc = SMB2_rmdir(xid, tcon, fid.persistent_fid,
101 tmprc = SMB2_rename(xid, tcon, fid.persistent_fid,
102 fid.volatile_fid, (__le16 *)data);
104 case SMB2_OP_HARDLINK:
105 tmprc = SMB2_set_hardlink(xid, tcon, fid.persistent_fid,
106 fid.volatile_fid, (__le16 *)data);
108 case SMB2_OP_SET_EOF:
109 tmprc = SMB2_set_eof(xid, tcon, fid.persistent_fid,
110 fid.volatile_fid, current->tgid,
111 (__le64 *)data, false);
113 case SMB2_OP_SET_INFO:
114 tmprc = SMB2_set_info(xid, tcon, fid.persistent_fid,
116 (FILE_BASIC_INFO *)data);
119 cifs_dbg(VFS, "Invalid command\n");
123 if (use_cached_root_handle)
124 close_shroot(&tcon->crfid);
126 rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
134 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
136 memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
137 dst->CurrentByteOffset = src->CurrentByteOffset;
138 dst->Mode = src->Mode;
139 dst->AlignmentRequirement = src->AlignmentRequirement;
140 dst->IndexNumber1 = 0; /* we don't use it */
144 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
145 struct cifs_sb_info *cifs_sb, const char *full_path,
146 FILE_ALL_INFO *data, bool *adjust_tz, bool *symlink)
149 struct smb2_file_all_info *smb2_data;
154 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
156 if (smb2_data == NULL)
159 rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path,
160 FILE_READ_ATTRIBUTES, FILE_OPEN, 0,
161 smb2_data, SMB2_OP_QUERY_INFO);
162 if (rc == -EOPNOTSUPP) {
164 /* Failed on a symbolic link - query a reparse point info */
165 rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path,
166 FILE_READ_ATTRIBUTES, FILE_OPEN,
167 OPEN_REPARSE_POINT, smb2_data,
173 move_smb2_info_to_cifs(data, smb2_data);
180 smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
181 struct cifs_sb_info *cifs_sb)
183 return smb2_open_op_close(xid, tcon, cifs_sb, name,
184 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
185 CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR);
189 smb2_mkdir_setinfo(struct inode *inode, const char *name,
190 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
191 const unsigned int xid)
193 FILE_BASIC_INFO data;
194 struct cifsInodeInfo *cifs_i;
198 memset(&data, 0, sizeof(data));
199 cifs_i = CIFS_I(inode);
200 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
201 data.Attributes = cpu_to_le32(dosattrs);
202 tmprc = smb2_open_op_close(xid, tcon, cifs_sb, name,
203 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
204 CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO);
206 cifs_i->cifsAttrs = dosattrs;
210 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
211 struct cifs_sb_info *cifs_sb)
213 return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
215 NULL, SMB2_OP_RMDIR);
219 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
220 struct cifs_sb_info *cifs_sb)
222 return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
223 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
224 NULL, SMB2_OP_DELETE);
228 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
229 const char *from_name, const char *to_name,
230 struct cifs_sb_info *cifs_sb, __u32 access, int command)
232 __le16 *smb2_to_name = NULL;
235 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
236 if (smb2_to_name == NULL) {
238 goto smb2_rename_path;
241 rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, access,
242 FILE_OPEN, 0, smb2_to_name, command);
249 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
250 const char *from_name, const char *to_name,
251 struct cifs_sb_info *cifs_sb)
253 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
254 DELETE, SMB2_OP_RENAME);
258 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
259 const char *from_name, const char *to_name,
260 struct cifs_sb_info *cifs_sb)
262 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
263 FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK);
267 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
268 const char *full_path, __u64 size,
269 struct cifs_sb_info *cifs_sb, bool set_alloc)
271 __le64 eof = cpu_to_le64(size);
272 return smb2_open_op_close(xid, tcon, cifs_sb, full_path,
273 FILE_WRITE_DATA, FILE_OPEN, 0, &eof,
278 smb2_set_file_info(struct inode *inode, const char *full_path,
279 FILE_BASIC_INFO *buf, const unsigned int xid)
281 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
282 struct tcon_link *tlink;
285 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
286 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
287 (buf->Attributes == 0))
288 return 0; /* would be a no op, no sense sending this */
290 tlink = cifs_sb_tlink(cifs_sb);
292 return PTR_ERR(tlink);
294 rc = smb2_open_op_close(xid, tlink_tcon(tlink), cifs_sb, full_path,
295 FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, buf,
297 cifs_put_tlink(tlink);