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 free_set_inf_compound(struct smb_rqst *rqst)
44 SMB2_set_info_free(&rqst[1]);
46 SMB2_close_free(&rqst[2]);
51 smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
52 struct cifs_sb_info *cifs_sb, const char *full_path,
53 __u32 desired_access, __u32 create_disposition,
54 __u32 create_options, umode_t mode, void *ptr, int command,
55 struct cifsFileInfo *cfile)
58 __le16 *utf16_path = NULL;
59 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
60 struct cifs_open_parms oparms;
62 struct cifs_ses *ses = tcon->ses;
64 struct smb_rqst rqst[3];
66 struct kvec rsp_iov[3];
67 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
68 struct kvec qi_iov[1];
69 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
70 struct kvec close_iov[1];
71 struct smb2_query_info_rsp *qi_rsp = NULL;
73 __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
76 struct smb2_file_rename_info rename_info;
77 struct smb2_file_link_info link_info;
80 if (smb3_encryption_required(tcon))
81 flags |= CIFS_TRANSFORM_REQ;
83 memset(rqst, 0, sizeof(rqst));
84 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
85 memset(rsp_iov, 0, sizeof(rsp_iov));
87 /* We already have a handle so we can skip the open */
92 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
98 memset(&oparms, 0, sizeof(struct cifs_open_parms));
100 oparms.desired_access = desired_access;
101 oparms.disposition = create_disposition;
102 oparms.create_options = create_options;
103 if (backup_cred(cifs_sb))
104 oparms.create_options |= CREATE_OPEN_BACKUP_INTENT;
106 oparms.reconnect = false;
109 memset(&open_iov, 0, sizeof(open_iov));
110 rqst[num_rqst].rq_iov = open_iov;
111 rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
112 rc = SMB2_open_init(tcon, &rqst[num_rqst], &oplock, &oparms,
118 smb2_set_next_command(tcon, &rqst[num_rqst]);
125 case SMB2_OP_QUERY_INFO:
126 memset(&qi_iov, 0, sizeof(qi_iov));
127 rqst[num_rqst].rq_iov = qi_iov;
128 rqst[num_rqst].rq_nvec = 1;
131 rc = SMB2_query_info_init(tcon, &rqst[num_rqst],
132 cfile->fid.persistent_fid,
133 cfile->fid.volatile_fid,
134 FILE_ALL_INFORMATION,
136 sizeof(struct smb2_file_all_info) +
137 PATH_MAX * 2, 0, NULL);
139 rc = SMB2_query_info_init(tcon, &rqst[num_rqst],
142 FILE_ALL_INFORMATION,
144 sizeof(struct smb2_file_all_info) +
145 PATH_MAX * 2, 0, NULL);
147 smb2_set_next_command(tcon, &rqst[num_rqst]);
148 smb2_set_related(&rqst[num_rqst]);
155 trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
159 trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
163 * Directories are created through parameters in the
166 trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
169 memset(&si_iov, 0, sizeof(si_iov));
170 rqst[num_rqst].rq_iov = si_iov;
171 rqst[num_rqst].rq_nvec = 1;
173 size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
174 data[0] = &delete_pending[0];
176 rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
177 COMPOUND_FID, current->tgid,
178 FILE_DISPOSITION_INFORMATION,
179 SMB2_O_INFO_FILE, 0, data, size);
182 smb2_set_next_command(tcon, &rqst[num_rqst]);
183 smb2_set_related(&rqst[num_rqst++]);
184 trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
186 case SMB2_OP_SET_EOF:
187 memset(&si_iov, 0, sizeof(si_iov));
188 rqst[num_rqst].rq_iov = si_iov;
189 rqst[num_rqst].rq_nvec = 1;
191 size[0] = 8; /* sizeof __le64 */
194 rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
195 COMPOUND_FID, current->tgid,
196 FILE_END_OF_FILE_INFORMATION,
197 SMB2_O_INFO_FILE, 0, data, size);
200 smb2_set_next_command(tcon, &rqst[num_rqst]);
201 smb2_set_related(&rqst[num_rqst++]);
202 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
204 case SMB2_OP_SET_INFO:
205 memset(&si_iov, 0, sizeof(si_iov));
206 rqst[num_rqst].rq_iov = si_iov;
207 rqst[num_rqst].rq_nvec = 1;
210 size[0] = sizeof(FILE_BASIC_INFO);
214 rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
215 cfile->fid.persistent_fid,
216 cfile->fid.volatile_fid, current->tgid,
217 FILE_BASIC_INFORMATION,
218 SMB2_O_INFO_FILE, 0, data, size);
220 rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
222 COMPOUND_FID, current->tgid,
223 FILE_BASIC_INFORMATION,
224 SMB2_O_INFO_FILE, 0, data, size);
226 smb2_set_next_command(tcon, &rqst[num_rqst]);
227 smb2_set_related(&rqst[num_rqst]);
234 trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
238 memset(&si_iov, 0, sizeof(si_iov));
239 rqst[num_rqst].rq_iov = si_iov;
240 rqst[num_rqst].rq_nvec = 2;
242 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
244 rename_info.ReplaceIfExists = 1;
245 rename_info.RootDirectory = 0;
246 rename_info.FileNameLength = cpu_to_le32(len);
248 size[0] = sizeof(struct smb2_file_rename_info);
249 data[0] = &rename_info;
251 size[1] = len + 2 /* null */;
252 data[1] = (__le16 *)ptr;
255 rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
256 cfile->fid.persistent_fid,
257 cfile->fid.volatile_fid,
258 current->tgid, FILE_RENAME_INFORMATION,
259 SMB2_O_INFO_FILE, 0, data, size);
261 rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
262 COMPOUND_FID, COMPOUND_FID,
263 current->tgid, FILE_RENAME_INFORMATION,
264 SMB2_O_INFO_FILE, 0, data, size);
266 smb2_set_next_command(tcon, &rqst[num_rqst]);
267 smb2_set_related(&rqst[num_rqst]);
273 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
275 case SMB2_OP_HARDLINK:
276 memset(&si_iov, 0, sizeof(si_iov));
277 rqst[num_rqst].rq_iov = si_iov;
278 rqst[num_rqst].rq_nvec = 2;
280 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
282 link_info.ReplaceIfExists = 0;
283 link_info.RootDirectory = 0;
284 link_info.FileNameLength = cpu_to_le32(len);
286 size[0] = sizeof(struct smb2_file_link_info);
287 data[0] = &link_info;
289 size[1] = len + 2 /* null */;
290 data[1] = (__le16 *)ptr;
292 rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
293 COMPOUND_FID, current->tgid,
294 FILE_LINK_INFORMATION,
295 SMB2_O_INFO_FILE, 0, data, size);
298 smb2_set_next_command(tcon, &rqst[num_rqst]);
299 smb2_set_related(&rqst[num_rqst++]);
300 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
303 cifs_dbg(VFS, "Invalid command\n");
309 /* We already have a handle so we can skip the close */
313 memset(&close_iov, 0, sizeof(close_iov));
314 rqst[num_rqst].rq_iov = close_iov;
315 rqst[num_rqst].rq_nvec = 1;
316 rc = SMB2_close_init(tcon, &rqst[num_rqst], COMPOUND_FID,
317 COMPOUND_FID, false);
318 smb2_set_related(&rqst[num_rqst]);
325 cifsFileInfo_put(cfile);
327 rc = compound_send_recv(xid, ses, flags, num_rqst - 2,
328 &rqst[1], &resp_buftype[1],
331 rc = compound_send_recv(xid, ses, flags, num_rqst,
337 cifsFileInfo_put(cfile);
339 SMB2_open_free(&rqst[0]);
340 if (rc == -EREMCHG) {
341 printk_once(KERN_WARNING "server share %s deleted\n",
343 tcon->need_reconnect = true;
347 case SMB2_OP_QUERY_INFO:
349 qi_rsp = (struct smb2_query_info_rsp *)
351 rc = smb2_validate_and_copy_iov(
352 le16_to_cpu(qi_rsp->OutputBufferOffset),
353 le32_to_cpu(qi_rsp->OutputBufferLength),
354 &rsp_iov[1], sizeof(struct smb2_file_all_info),
358 SMB2_query_info_free(&rqst[1]);
360 SMB2_close_free(&rqst[2]);
362 trace_smb3_query_info_compound_err(xid, ses->Suid,
365 trace_smb3_query_info_compound_done(xid, ses->Suid,
370 trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
372 trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
374 SMB2_close_free(&rqst[1]);
378 trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
380 trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
382 SMB2_close_free(&rqst[1]);
384 case SMB2_OP_HARDLINK:
386 trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
388 trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
389 free_set_inf_compound(rqst);
393 trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
395 trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
396 free_set_inf_compound(rqst);
400 trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
402 trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
403 free_set_inf_compound(rqst);
405 case SMB2_OP_SET_EOF:
407 trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
409 trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
410 free_set_inf_compound(rqst);
412 case SMB2_OP_SET_INFO:
414 trace_smb3_set_info_compound_err(xid, ses->Suid,
417 trace_smb3_set_info_compound_done(xid, ses->Suid,
419 free_set_inf_compound(rqst);
422 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
423 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
424 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
429 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
431 memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
432 dst->CurrentByteOffset = src->CurrentByteOffset;
433 dst->Mode = src->Mode;
434 dst->AlignmentRequirement = src->AlignmentRequirement;
435 dst->IndexNumber1 = 0; /* we don't use it */
439 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
440 struct cifs_sb_info *cifs_sb, const char *full_path,
441 FILE_ALL_INFO *data, bool *adjust_tz, bool *symlink)
444 struct smb2_file_all_info *smb2_data;
445 __u32 create_options = 0;
447 bool no_cached_open = tcon->nohandlecache;
448 struct cifsFileInfo *cfile;
453 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
455 if (smb2_data == NULL)
458 /* If it is a root and its handle is cached then use it */
459 if (!strlen(full_path) && !no_cached_open) {
460 rc = open_shroot(xid, tcon, &fid);
464 if (tcon->crfid.file_all_info_is_valid) {
465 move_smb2_info_to_cifs(data,
466 &tcon->crfid.file_all_info);
468 rc = SMB2_query_info(xid, tcon, fid.persistent_fid,
469 fid.volatile_fid, smb2_data);
471 move_smb2_info_to_cifs(data, smb2_data);
473 close_shroot(&tcon->crfid);
477 if (backup_cred(cifs_sb))
478 create_options |= CREATE_OPEN_BACKUP_INTENT;
480 cifs_get_readable_path(tcon, full_path, &cfile);
481 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
482 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
483 ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
484 if (rc == -EOPNOTSUPP) {
486 create_options |= OPEN_REPARSE_POINT;
488 /* Failed on a symbolic link - query a reparse point info */
489 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
490 FILE_READ_ATTRIBUTES, FILE_OPEN,
491 create_options, ACL_NO_MODE,
492 smb2_data, SMB2_OP_QUERY_INFO, NULL);
497 move_smb2_info_to_cifs(data, smb2_data);
504 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
505 struct cifs_tcon *tcon, const char *name,
506 struct cifs_sb_info *cifs_sb)
508 return smb2_compound_op(xid, tcon, cifs_sb, name,
509 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
510 CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
515 smb2_mkdir_setinfo(struct inode *inode, const char *name,
516 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
517 const unsigned int xid)
519 FILE_BASIC_INFO data;
520 struct cifsInodeInfo *cifs_i;
521 struct cifsFileInfo *cfile;
525 memset(&data, 0, sizeof(data));
526 cifs_i = CIFS_I(inode);
527 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
528 data.Attributes = cpu_to_le32(dosattrs);
529 cifs_get_writable_path(tcon, name, &cfile);
530 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
531 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
532 CREATE_NOT_FILE, ACL_NO_MODE,
533 &data, SMB2_OP_SET_INFO, cfile);
535 cifs_i->cifsAttrs = dosattrs;
539 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
540 struct cifs_sb_info *cifs_sb)
542 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
543 CREATE_NOT_FILE, ACL_NO_MODE,
544 NULL, SMB2_OP_RMDIR, NULL);
548 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
549 struct cifs_sb_info *cifs_sb)
551 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
552 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
553 ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
557 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
558 const char *from_name, const char *to_name,
559 struct cifs_sb_info *cifs_sb, __u32 access, int command,
560 struct cifsFileInfo *cfile)
562 __le16 *smb2_to_name = NULL;
565 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
566 if (smb2_to_name == NULL) {
568 goto smb2_rename_path;
570 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
571 FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
579 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
580 const char *from_name, const char *to_name,
581 struct cifs_sb_info *cifs_sb)
583 struct cifsFileInfo *cfile;
585 cifs_get_writable_path(tcon, from_name, &cfile);
587 return smb2_set_path_attr(xid, tcon, from_name, to_name,
588 cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
592 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
593 const char *from_name, const char *to_name,
594 struct cifs_sb_info *cifs_sb)
596 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
597 FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
602 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
603 const char *full_path, __u64 size,
604 struct cifs_sb_info *cifs_sb, bool set_alloc)
606 __le64 eof = cpu_to_le64(size);
608 return smb2_compound_op(xid, tcon, cifs_sb, full_path,
609 FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
610 &eof, SMB2_OP_SET_EOF, NULL);
614 smb2_set_file_info(struct inode *inode, const char *full_path,
615 FILE_BASIC_INFO *buf, const unsigned int xid)
617 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
618 struct tcon_link *tlink;
621 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
622 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
623 (buf->Attributes == 0))
624 return 0; /* would be a no op, no sense sending this */
626 tlink = cifs_sb_tlink(cifs_sb);
628 return PTR_ERR(tlink);
630 rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
631 FILE_WRITE_ATTRIBUTES, FILE_OPEN,
632 0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL);
633 cifs_put_tlink(tlink);