1 // SPDX-License-Identifier: LGPL-2.1
4 * Copyright (C) International Business Machines Corp., 2002, 2011
6 * Author(s): Pavel Shilovsky (pshilovsky@samba.org),
7 * Steve French (sfrench@us.ibm.com)
11 #include <linux/stat.h>
12 #include <linux/slab.h>
13 #include <linux/pagemap.h>
14 #include <asm/div64.h>
18 #include "cifsproto.h"
19 #include "cifs_debug.h"
20 #include "cifs_fs_sb.h"
21 #include "cifs_unicode.h"
25 #include "smb2proto.h"
28 free_set_inf_compound(struct smb_rqst *rqst)
31 SMB2_set_info_free(&rqst[1]);
33 SMB2_close_free(&rqst[2]);
38 struct cifs_open_parms oparms;
39 struct kvec rsp_iov[3];
40 struct smb_rqst rqst[3];
41 struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
42 struct kvec qi_iov[1];
43 struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
44 struct kvec close_iov[1];
45 struct smb2_file_rename_info rename_info;
46 struct smb2_file_link_info link_info;
50 * note: If cfile is passed, the reference to it is dropped here.
51 * So make sure that you do not reuse cfile after return from this func.
54 smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
55 struct cifs_sb_info *cifs_sb, const char *full_path,
56 __u32 desired_access, __u32 create_disposition,
57 __u32 create_options, umode_t mode, void *ptr, int command,
58 struct cifsFileInfo *cfile)
60 struct cop_vars *vars = NULL;
62 struct smb_rqst *rqst;
64 __le16 *utf16_path = NULL;
65 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
67 struct cifs_ses *ses = tcon->ses;
68 struct TCP_Server_Info *server;
71 struct smb2_query_info_rsp *qi_rsp = NULL;
73 __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
78 vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
81 rqst = &vars->rqst[0];
82 rsp_iov = &vars->rsp_iov[0];
84 server = cifs_pick_channel(ses);
86 if (smb3_encryption_required(tcon))
87 flags |= CIFS_TRANSFORM_REQ;
89 resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
91 /* We already have a handle so we can skip the open */
96 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
102 vars->oparms.tcon = tcon;
103 vars->oparms.desired_access = desired_access;
104 vars->oparms.disposition = create_disposition;
105 vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
106 vars->oparms.fid = &fid;
107 vars->oparms.reconnect = false;
108 vars->oparms.mode = mode;
109 vars->oparms.cifs_sb = cifs_sb;
111 rqst[num_rqst].rq_iov = &vars->open_iov[0];
112 rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
113 rc = SMB2_open_init(tcon, server,
114 &rqst[num_rqst], &oplock, &vars->oparms,
120 smb2_set_next_command(tcon, &rqst[num_rqst]);
127 case SMB2_OP_QUERY_INFO:
128 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
129 rqst[num_rqst].rq_nvec = 1;
132 rc = SMB2_query_info_init(tcon, server,
134 cfile->fid.persistent_fid,
135 cfile->fid.volatile_fid,
136 FILE_ALL_INFORMATION,
138 sizeof(struct smb2_file_all_info) +
139 PATH_MAX * 2, 0, NULL);
141 rc = SMB2_query_info_init(tcon, server,
145 FILE_ALL_INFORMATION,
147 sizeof(struct smb2_file_all_info) +
148 PATH_MAX * 2, 0, NULL);
150 smb2_set_next_command(tcon, &rqst[num_rqst]);
151 smb2_set_related(&rqst[num_rqst]);
158 trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
161 case SMB2_OP_POSIX_QUERY_INFO:
162 rqst[num_rqst].rq_iov = &vars->qi_iov[0];
163 rqst[num_rqst].rq_nvec = 1;
166 rc = SMB2_query_info_init(tcon, server,
168 cfile->fid.persistent_fid,
169 cfile->fid.volatile_fid,
170 SMB_FIND_FILE_POSIX_INFO,
172 /* TBD: fix following to allow for longer SIDs */
173 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
174 (sizeof(struct cifs_sid) * 2), 0, NULL);
176 rc = SMB2_query_info_init(tcon, server,
180 SMB_FIND_FILE_POSIX_INFO,
182 sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
183 (sizeof(struct cifs_sid) * 2), 0, NULL);
185 smb2_set_next_command(tcon, &rqst[num_rqst]);
186 smb2_set_related(&rqst[num_rqst]);
193 trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
196 trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
200 * Directories are created through parameters in the
203 trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
206 rqst[num_rqst].rq_iov = &vars->si_iov[0];
207 rqst[num_rqst].rq_nvec = 1;
209 size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
210 data[0] = &delete_pending[0];
212 rc = SMB2_set_info_init(tcon, server,
213 &rqst[num_rqst], COMPOUND_FID,
214 COMPOUND_FID, current->tgid,
215 FILE_DISPOSITION_INFORMATION,
216 SMB2_O_INFO_FILE, 0, data, size);
219 smb2_set_next_command(tcon, &rqst[num_rqst]);
220 smb2_set_related(&rqst[num_rqst++]);
221 trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
223 case SMB2_OP_SET_EOF:
224 rqst[num_rqst].rq_iov = &vars->si_iov[0];
225 rqst[num_rqst].rq_nvec = 1;
227 size[0] = 8; /* sizeof __le64 */
230 rc = SMB2_set_info_init(tcon, server,
231 &rqst[num_rqst], COMPOUND_FID,
232 COMPOUND_FID, current->tgid,
233 FILE_END_OF_FILE_INFORMATION,
234 SMB2_O_INFO_FILE, 0, data, size);
237 smb2_set_next_command(tcon, &rqst[num_rqst]);
238 smb2_set_related(&rqst[num_rqst++]);
239 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
241 case SMB2_OP_SET_INFO:
242 rqst[num_rqst].rq_iov = &vars->si_iov[0];
243 rqst[num_rqst].rq_nvec = 1;
246 size[0] = sizeof(FILE_BASIC_INFO);
250 rc = SMB2_set_info_init(tcon, server,
252 cfile->fid.persistent_fid,
253 cfile->fid.volatile_fid, current->tgid,
254 FILE_BASIC_INFORMATION,
255 SMB2_O_INFO_FILE, 0, data, size);
257 rc = SMB2_set_info_init(tcon, server,
260 COMPOUND_FID, current->tgid,
261 FILE_BASIC_INFORMATION,
262 SMB2_O_INFO_FILE, 0, data, size);
264 smb2_set_next_command(tcon, &rqst[num_rqst]);
265 smb2_set_related(&rqst[num_rqst]);
272 trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
276 rqst[num_rqst].rq_iov = &vars->si_iov[0];
277 rqst[num_rqst].rq_nvec = 2;
279 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
281 vars->rename_info.ReplaceIfExists = 1;
282 vars->rename_info.RootDirectory = 0;
283 vars->rename_info.FileNameLength = cpu_to_le32(len);
285 size[0] = sizeof(struct smb2_file_rename_info);
286 data[0] = &vars->rename_info;
288 size[1] = len + 2 /* null */;
289 data[1] = (__le16 *)ptr;
292 rc = SMB2_set_info_init(tcon, server,
294 cfile->fid.persistent_fid,
295 cfile->fid.volatile_fid,
296 current->tgid, FILE_RENAME_INFORMATION,
297 SMB2_O_INFO_FILE, 0, data, size);
299 rc = SMB2_set_info_init(tcon, server,
301 COMPOUND_FID, COMPOUND_FID,
302 current->tgid, FILE_RENAME_INFORMATION,
303 SMB2_O_INFO_FILE, 0, data, size);
305 smb2_set_next_command(tcon, &rqst[num_rqst]);
306 smb2_set_related(&rqst[num_rqst]);
312 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
314 case SMB2_OP_HARDLINK:
315 rqst[num_rqst].rq_iov = &vars->si_iov[0];
316 rqst[num_rqst].rq_nvec = 2;
318 len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
320 vars->link_info.ReplaceIfExists = 0;
321 vars->link_info.RootDirectory = 0;
322 vars->link_info.FileNameLength = cpu_to_le32(len);
324 size[0] = sizeof(struct smb2_file_link_info);
325 data[0] = &vars->link_info;
327 size[1] = len + 2 /* null */;
328 data[1] = (__le16 *)ptr;
330 rc = SMB2_set_info_init(tcon, server,
331 &rqst[num_rqst], COMPOUND_FID,
332 COMPOUND_FID, current->tgid,
333 FILE_LINK_INFORMATION,
334 SMB2_O_INFO_FILE, 0, data, size);
337 smb2_set_next_command(tcon, &rqst[num_rqst]);
338 smb2_set_related(&rqst[num_rqst++]);
339 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
342 cifs_dbg(VFS, "Invalid command\n");
348 /* We already have a handle so we can skip the close */
352 flags |= CIFS_CP_CREATE_CLOSE_OP;
353 rqst[num_rqst].rq_iov = &vars->close_iov[0];
354 rqst[num_rqst].rq_nvec = 1;
355 rc = SMB2_close_init(tcon, server,
356 &rqst[num_rqst], COMPOUND_FID,
357 COMPOUND_FID, false);
358 smb2_set_related(&rqst[num_rqst]);
365 rc = compound_send_recv(xid, ses, server,
367 &rqst[1], &resp_buftype[1],
370 rc = compound_send_recv(xid, ses, server,
377 cifsFileInfo_put(cfile);
379 SMB2_open_free(&rqst[0]);
380 if (rc == -EREMCHG) {
381 pr_warn_once("server share %s deleted\n", tcon->treeName);
382 tcon->need_reconnect = true;
386 case SMB2_OP_QUERY_INFO:
388 qi_rsp = (struct smb2_query_info_rsp *)
390 rc = smb2_validate_and_copy_iov(
391 le16_to_cpu(qi_rsp->OutputBufferOffset),
392 le32_to_cpu(qi_rsp->OutputBufferLength),
393 &rsp_iov[1], sizeof(struct smb2_file_all_info),
397 SMB2_query_info_free(&rqst[1]);
399 SMB2_close_free(&rqst[2]);
401 trace_smb3_query_info_compound_err(xid, ses->Suid,
404 trace_smb3_query_info_compound_done(xid, ses->Suid,
407 case SMB2_OP_POSIX_QUERY_INFO:
409 qi_rsp = (struct smb2_query_info_rsp *)
411 rc = smb2_validate_and_copy_iov(
412 le16_to_cpu(qi_rsp->OutputBufferOffset),
413 le32_to_cpu(qi_rsp->OutputBufferLength),
414 &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
417 SMB2_query_info_free(&rqst[1]);
419 SMB2_close_free(&rqst[2]);
421 trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
423 trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
427 trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
429 trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
431 SMB2_close_free(&rqst[1]);
435 trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
437 trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
439 SMB2_close_free(&rqst[1]);
441 case SMB2_OP_HARDLINK:
443 trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
445 trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
446 free_set_inf_compound(rqst);
450 trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
452 trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
453 free_set_inf_compound(rqst);
457 trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
459 trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
460 free_set_inf_compound(rqst);
462 case SMB2_OP_SET_EOF:
464 trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
466 trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
467 free_set_inf_compound(rqst);
469 case SMB2_OP_SET_INFO:
471 trace_smb3_set_info_compound_err(xid, ses->Suid,
474 trace_smb3_set_info_compound_done(xid, ses->Suid,
476 free_set_inf_compound(rqst);
479 free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
480 free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
481 free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
487 move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
489 memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
490 dst->CurrentByteOffset = src->CurrentByteOffset;
491 dst->Mode = src->Mode;
492 dst->AlignmentRequirement = src->AlignmentRequirement;
493 dst->IndexNumber1 = 0; /* we don't use it */
497 smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
498 struct cifs_sb_info *cifs_sb, const char *full_path,
499 FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
502 struct smb2_file_all_info *smb2_data;
503 __u32 create_options = 0;
504 struct cifsFileInfo *cfile;
505 struct cached_fid *cfid = NULL;
510 smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
512 if (smb2_data == NULL)
515 if (strcmp(full_path, ""))
518 rc = open_cached_dir(xid, tcon, full_path, cifs_sb, &cfid);
519 /* If it is a root and its handle is cached then use it */
521 if (tcon->crfid.file_all_info_is_valid) {
522 move_smb2_info_to_cifs(data,
523 &tcon->crfid.file_all_info);
525 rc = SMB2_query_info(xid, tcon,
526 cfid->fid->persistent_fid,
527 cfid->fid->volatile_fid, smb2_data);
529 move_smb2_info_to_cifs(data, smb2_data);
531 close_cached_dir(cfid);
535 cifs_get_readable_path(tcon, full_path, &cfile);
536 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
537 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
538 ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
539 if (rc == -EOPNOTSUPP) {
541 create_options |= OPEN_REPARSE_POINT;
543 /* Failed on a symbolic link - query a reparse point info */
544 cifs_get_readable_path(tcon, full_path, &cfile);
545 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
546 FILE_READ_ATTRIBUTES, FILE_OPEN,
547 create_options, ACL_NO_MODE,
548 smb2_data, SMB2_OP_QUERY_INFO, cfile);
553 move_smb2_info_to_cifs(data, smb2_data);
561 smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
562 struct cifs_sb_info *cifs_sb, const char *full_path,
563 struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse)
566 __u32 create_options = 0;
567 struct cifsFileInfo *cfile;
568 struct smb311_posix_qinfo *smb2_data;
573 /* BB TODO: Make struct larger when add support for parsing owner SIDs */
574 smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
576 if (smb2_data == NULL)
580 * BB TODO: Add support for using the cached root handle.
581 * Create SMB2_query_posix_info worker function to do non-compounded query
582 * when we already have an open file handle for this. For now this is fast enough
583 * (always using the compounded version).
586 cifs_get_readable_path(tcon, full_path, &cfile);
587 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
588 FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
589 ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
590 if (rc == -EOPNOTSUPP) {
591 /* BB TODO: When support for special files added to Samba re-verify this path */
593 create_options |= OPEN_REPARSE_POINT;
595 /* Failed on a symbolic link - query a reparse point info */
596 cifs_get_readable_path(tcon, full_path, &cfile);
597 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
598 FILE_READ_ATTRIBUTES, FILE_OPEN,
599 create_options, ACL_NO_MODE,
600 smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
605 /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
606 memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
614 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
615 struct cifs_tcon *tcon, const char *name,
616 struct cifs_sb_info *cifs_sb)
618 return smb2_compound_op(xid, tcon, cifs_sb, name,
619 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
620 CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
625 smb2_mkdir_setinfo(struct inode *inode, const char *name,
626 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
627 const unsigned int xid)
629 FILE_BASIC_INFO data;
630 struct cifsInodeInfo *cifs_i;
631 struct cifsFileInfo *cfile;
635 memset(&data, 0, sizeof(data));
636 cifs_i = CIFS_I(inode);
637 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
638 data.Attributes = cpu_to_le32(dosattrs);
639 cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
640 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
641 FILE_WRITE_ATTRIBUTES, FILE_CREATE,
642 CREATE_NOT_FILE, ACL_NO_MODE,
643 &data, SMB2_OP_SET_INFO, cfile);
645 cifs_i->cifsAttrs = dosattrs;
649 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
650 struct cifs_sb_info *cifs_sb)
652 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
653 CREATE_NOT_FILE, ACL_NO_MODE,
654 NULL, SMB2_OP_RMDIR, NULL);
658 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
659 struct cifs_sb_info *cifs_sb)
661 return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
662 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
663 ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
667 smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
668 const char *from_name, const char *to_name,
669 struct cifs_sb_info *cifs_sb, __u32 access, int command,
670 struct cifsFileInfo *cfile)
672 __le16 *smb2_to_name = NULL;
675 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
676 if (smb2_to_name == NULL) {
678 goto smb2_rename_path;
680 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
681 FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
689 smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
690 const char *from_name, const char *to_name,
691 struct cifs_sb_info *cifs_sb)
693 struct cifsFileInfo *cfile;
695 cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
697 return smb2_set_path_attr(xid, tcon, from_name, to_name,
698 cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
702 smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
703 const char *from_name, const char *to_name,
704 struct cifs_sb_info *cifs_sb)
706 return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
707 FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
712 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
713 const char *full_path, __u64 size,
714 struct cifs_sb_info *cifs_sb, bool set_alloc)
716 __le64 eof = cpu_to_le64(size);
717 struct cifsFileInfo *cfile;
719 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile);
720 return smb2_compound_op(xid, tcon, cifs_sb, full_path,
721 FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
722 &eof, SMB2_OP_SET_EOF, cfile);
726 smb2_set_file_info(struct inode *inode, const char *full_path,
727 FILE_BASIC_INFO *buf, const unsigned int xid)
729 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
730 struct tcon_link *tlink;
731 struct cifs_tcon *tcon;
732 struct cifsFileInfo *cfile;
735 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
736 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
737 (buf->Attributes == 0))
738 return 0; /* would be a no op, no sense sending this */
740 tlink = cifs_sb_tlink(cifs_sb);
742 return PTR_ERR(tlink);
743 tcon = tlink_tcon(tlink);
745 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile);
746 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
747 FILE_WRITE_ATTRIBUTES, FILE_OPEN,
748 0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, cfile);
749 cifs_put_tlink(tlink);