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_compound_op(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 *ptr, int command)
47 __le16 *utf16_path = NULL;
48 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
49 struct cifs_open_parms oparms;
51 struct cifs_ses *ses = tcon->ses;
52 struct TCP_Server_Info *server = ses->server;
54 struct smb_rqst rqst[3];
56 struct kvec rsp_iov[3];
57 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
58 struct kvec qi_iov[1];
59 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
60 struct kvec close_iov[1];
61 struct smb2_query_info_rsp *qi_rsp = NULL;
63 __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
66 struct smb2_file_rename_info rename_info;
67 struct smb2_file_link_info link_info;
70 if (smb3_encryption_required(tcon))
71 flags |= CIFS_TRANSFORM_REQ;
73 memset(rqst, 0, sizeof(rqst));
74 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
75 memset(rsp_iov, 0, sizeof(rsp_iov));
78 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
83 oparms.desired_access = desired_access;
84 oparms.disposition = create_disposition;
85 oparms.create_options = create_options;
86 if (backup_cred(cifs_sb))
87 oparms.create_options |= CREATE_OPEN_BACKUP_INTENT;
89 oparms.reconnect = false;
91 memset(&open_iov, 0, sizeof(open_iov));
92 rqst[num_rqst].rq_iov = open_iov;
93 rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
94 rc = SMB2_open_init(tcon, &rqst[num_rqst], &oplock, &oparms,
100 smb2_set_next_command(server, &rqst[num_rqst++]);
104 case SMB2_OP_QUERY_INFO:
105 memset(&qi_iov, 0, sizeof(qi_iov));
106 rqst[num_rqst].rq_iov = qi_iov;
107 rqst[num_rqst].rq_nvec = 1;
109 rc = SMB2_query_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
110 COMPOUND_FID, FILE_ALL_INFORMATION,
112 sizeof(struct smb2_file_all_info) +
114 smb2_set_next_command(server, &rqst[num_rqst]);
115 smb2_set_related(&rqst[num_rqst++]);
121 * Directories are created through parameters in the
126 memset(&si_iov, 0, sizeof(si_iov));
127 rqst[num_rqst].rq_iov = si_iov;
128 rqst[num_rqst].rq_nvec = 1;
131 data[0] = &delete_pending[0];
133 rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
134 COMPOUND_FID, current->tgid,
135 FILE_DISPOSITION_INFORMATION,
136 SMB2_O_INFO_FILE, 0, data, size);
137 smb2_set_next_command(server, &rqst[num_rqst]);
138 smb2_set_related(&rqst[num_rqst++]);
140 case SMB2_OP_SET_EOF:
141 memset(&si_iov, 0, sizeof(si_iov));
142 rqst[num_rqst].rq_iov = si_iov;
143 rqst[num_rqst].rq_nvec = 1;
145 size[0] = 8; /* sizeof __le64 */
148 rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
149 COMPOUND_FID, current->tgid,
150 FILE_END_OF_FILE_INFORMATION,
151 SMB2_O_INFO_FILE, 0, data, size);
152 smb2_set_next_command(server, &rqst[num_rqst]);
153 smb2_set_related(&rqst[num_rqst++]);
155 case SMB2_OP_SET_INFO:
156 memset(&si_iov, 0, sizeof(si_iov));
157 rqst[num_rqst].rq_iov = si_iov;
158 rqst[num_rqst].rq_nvec = 1;
161 size[0] = sizeof(FILE_BASIC_INFO);
164 rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
165 COMPOUND_FID, current->tgid,
166 FILE_BASIC_INFORMATION,
167 SMB2_O_INFO_FILE, 0, data, size);
168 smb2_set_next_command(server, &rqst[num_rqst]);
169 smb2_set_related(&rqst[num_rqst++]);
172 memset(&si_iov, 0, sizeof(si_iov));
173 rqst[num_rqst].rq_iov = si_iov;
174 rqst[num_rqst].rq_nvec = 2;
176 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
178 rename_info.ReplaceIfExists = 1;
179 rename_info.RootDirectory = 0;
180 rename_info.FileNameLength = cpu_to_le32(len);
182 size[0] = sizeof(struct smb2_file_rename_info);
183 data[0] = &rename_info;
185 size[1] = len + 2 /* null */;
186 data[1] = (__le16 *)ptr;
188 rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
189 COMPOUND_FID, current->tgid,
190 FILE_RENAME_INFORMATION,
191 SMB2_O_INFO_FILE, 0, data, size);
192 smb2_set_next_command(server, &rqst[num_rqst]);
193 smb2_set_related(&rqst[num_rqst++]);
195 case SMB2_OP_HARDLINK:
196 memset(&si_iov, 0, sizeof(si_iov));
197 rqst[num_rqst].rq_iov = si_iov;
198 rqst[num_rqst].rq_nvec = 2;
200 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
202 link_info.ReplaceIfExists = 0;
203 link_info.RootDirectory = 0;
204 link_info.FileNameLength = cpu_to_le32(len);
206 size[0] = sizeof(struct smb2_file_link_info);
207 data[0] = &link_info;
209 size[1] = len + 2 /* null */;
210 data[1] = (__le16 *)ptr;
212 rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
213 COMPOUND_FID, current->tgid,
214 FILE_LINK_INFORMATION,
215 SMB2_O_INFO_FILE, 0, data, size);
216 smb2_set_next_command(server, &rqst[num_rqst]);
217 smb2_set_related(&rqst[num_rqst++]);
220 cifs_dbg(VFS, "Invalid command\n");
227 memset(&close_iov, 0, sizeof(close_iov));
228 rqst[num_rqst].rq_iov = close_iov;
229 rqst[num_rqst].rq_nvec = 1;
230 rc = SMB2_close_init(tcon, &rqst[num_rqst], COMPOUND_FID,
232 smb2_set_related(&rqst[num_rqst++]);
236 rc = compound_send_recv(xid, ses, flags, num_rqst, rqst,
237 resp_buftype, rsp_iov);
240 SMB2_open_free(&rqst[0]);
242 case SMB2_OP_QUERY_INFO:
244 qi_rsp = (struct smb2_query_info_rsp *)
246 rc = smb2_validate_and_copy_iov(
247 le16_to_cpu(qi_rsp->OutputBufferOffset),
248 le32_to_cpu(qi_rsp->OutputBufferLength),
249 &rsp_iov[1], sizeof(struct smb2_file_all_info),
253 SMB2_query_info_free(&rqst[1]);
255 SMB2_close_free(&rqst[2]);
260 SMB2_close_free(&rqst[1]);
262 case SMB2_OP_HARDLINK:
265 case SMB2_OP_SET_EOF:
266 case SMB2_OP_SET_INFO:
268 SMB2_set_info_free(&rqst[1]);
270 SMB2_close_free(&rqst[2]);
273 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
274 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
275 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
280 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
282 memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
283 dst->CurrentByteOffset = src->CurrentByteOffset;
284 dst->Mode = src->Mode;
285 dst->AlignmentRequirement = src->AlignmentRequirement;
286 dst->IndexNumber1 = 0; /* we don't use it */
290 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
291 struct cifs_sb_info *cifs_sb, const char *full_path,
292 FILE_ALL_INFO *data, bool *adjust_tz, bool *symlink)
295 struct smb2_file_all_info *smb2_data;
300 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
302 if (smb2_data == NULL)
305 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
306 FILE_READ_ATTRIBUTES, FILE_OPEN, 0,
307 smb2_data, SMB2_OP_QUERY_INFO);
308 if (rc == -EOPNOTSUPP) {
310 /* Failed on a symbolic link - query a reparse point info */
311 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
312 FILE_READ_ATTRIBUTES, FILE_OPEN,
313 OPEN_REPARSE_POINT, smb2_data,
319 move_smb2_info_to_cifs(data, smb2_data);
326 smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
327 struct cifs_sb_info *cifs_sb)
329 return smb2_compound_op(xid, tcon, cifs_sb, name,
330 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
331 CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR);
335 smb2_mkdir_setinfo(struct inode *inode, const char *name,
336 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
337 const unsigned int xid)
339 FILE_BASIC_INFO data;
340 struct cifsInodeInfo *cifs_i;
344 memset(&data, 0, sizeof(data));
345 cifs_i = CIFS_I(inode);
346 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
347 data.Attributes = cpu_to_le32(dosattrs);
348 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
349 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
350 CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO);
352 cifs_i->cifsAttrs = dosattrs;
356 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
357 struct cifs_sb_info *cifs_sb)
359 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
361 NULL, SMB2_OP_RMDIR);
365 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
366 struct cifs_sb_info *cifs_sb)
368 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
369 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
370 NULL, SMB2_OP_DELETE);
374 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
375 const char *from_name, const char *to_name,
376 struct cifs_sb_info *cifs_sb, __u32 access, int command)
378 __le16 *smb2_to_name = NULL;
381 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
382 if (smb2_to_name == NULL) {
384 goto smb2_rename_path;
387 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
388 FILE_OPEN, 0, smb2_to_name, command);
395 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
396 const char *from_name, const char *to_name,
397 struct cifs_sb_info *cifs_sb)
399 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
400 DELETE, SMB2_OP_RENAME);
404 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
405 const char *from_name, const char *to_name,
406 struct cifs_sb_info *cifs_sb)
408 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
409 FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK);
413 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
414 const char *full_path, __u64 size,
415 struct cifs_sb_info *cifs_sb, bool set_alloc)
417 __le64 eof = cpu_to_le64(size);
419 return smb2_compound_op(xid, tcon, cifs_sb, full_path,
420 FILE_WRITE_DATA, FILE_OPEN, 0, &eof,
425 smb2_set_file_info(struct inode *inode, const char *full_path,
426 FILE_BASIC_INFO *buf, const unsigned int xid)
428 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
429 struct tcon_link *tlink;
432 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
433 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
434 (buf->Attributes == 0))
435 return 0; /* would be a no op, no sense sending this */
437 tlink = cifs_sb_tlink(cifs_sb);
439 return PTR_ERR(tlink);
441 rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
442 FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, buf,
444 cifs_put_tlink(tlink);