2 Unix SMB/CIFS implementation.
3 file opening and share modes
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2004
6 Copyright (C) Volker Lendecke 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "system/filesys.h"
25 #include "smbd/smbd.h"
26 #include "smbd/globals.h"
27 #include "fake_file.h"
28 #include "../libcli/security/security.h"
29 #include "../librpc/gen_ndr/ndr_security.h"
30 #include "../librpc/gen_ndr/open_files.h"
31 #include "../librpc/gen_ndr/idmap.h"
32 #include "passdb/lookup_sid.h"
36 #include "source3/lib/dbwrap/dbwrap_watch.h"
38 extern const struct generic_mapping file_generic_mapping;
40 struct deferred_open_record {
41 bool delayed_for_oplocks;
46 /****************************************************************************
47 If the requester wanted DELETE_ACCESS and was rejected because
48 the file ACL didn't include DELETE_ACCESS, see if the parent ACL
50 ****************************************************************************/
52 static bool parent_override_delete(connection_struct *conn,
53 const struct smb_filename *smb_fname,
55 uint32_t rejected_mask)
57 if ((access_mask & DELETE_ACCESS) &&
58 (rejected_mask & DELETE_ACCESS) &&
59 can_delete_file_in_directory(conn, smb_fname)) {
65 /****************************************************************************
66 Check if we have open rights.
67 ****************************************************************************/
69 NTSTATUS smbd_check_access_rights(struct connection_struct *conn,
70 const struct smb_filename *smb_fname,
74 /* Check if we have rights to open. */
76 struct security_descriptor *sd = NULL;
77 uint32_t rejected_share_access;
78 uint32_t rejected_mask = access_mask;
79 uint32_t do_not_check_mask = 0;
81 rejected_share_access = access_mask & ~(conn->share_access);
83 if (rejected_share_access) {
84 DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
86 (unsigned int)access_mask,
87 smb_fname_str_dbg(smb_fname),
88 (unsigned int)rejected_share_access ));
89 return NT_STATUS_ACCESS_DENIED;
92 if (!use_privs && get_current_uid(conn) == (uid_t)0) {
93 /* I'm sorry sir, I didn't know you were root... */
94 DEBUG(10,("smbd_check_access_rights: root override "
95 "on %s. Granting 0x%x\n",
96 smb_fname_str_dbg(smb_fname),
97 (unsigned int)access_mask ));
101 if ((access_mask & DELETE_ACCESS) && !lp_acl_check_permissions(SNUM(conn))) {
102 DEBUG(10,("smbd_check_access_rights: not checking ACL "
103 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
104 smb_fname_str_dbg(smb_fname),
105 (unsigned int)access_mask ));
109 if (access_mask == DELETE_ACCESS &&
110 VALID_STAT(smb_fname->st) &&
111 S_ISLNK(smb_fname->st.st_ex_mode)) {
112 /* We can always delete a symlink. */
113 DEBUG(10,("smbd_check_access_rights: not checking ACL "
114 "on DELETE_ACCESS on symlink %s.\n",
115 smb_fname_str_dbg(smb_fname) ));
119 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
122 SECINFO_DACL), talloc_tos(), &sd);
124 if (!NT_STATUS_IS_OK(status)) {
125 DEBUG(10, ("smbd_check_access_rights: Could not get acl "
127 smb_fname_str_dbg(smb_fname),
130 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
138 * If we can access the path to this file, by
139 * default we have FILE_READ_ATTRIBUTES from the
140 * containing directory. See the section:
141 * "Algorithm to Check Access to an Existing File"
144 * se_file_access_check() also takes care of
145 * owner WRITE_DAC and READ_CONTROL.
147 do_not_check_mask = FILE_READ_ATTRIBUTES;
150 * Samba 3.6 and earlier granted execute access even
151 * if the ACL did not contain execute rights.
152 * Samba 4.0 is more correct and checks it.
153 * The compatibilty mode allows to skip this check
154 * to smoothen upgrades.
156 if (lp_acl_allow_execute_always(SNUM(conn))) {
157 do_not_check_mask |= FILE_EXECUTE;
160 status = se_file_access_check(sd,
161 get_current_nttok(conn),
163 (access_mask & ~do_not_check_mask),
166 DEBUG(10,("smbd_check_access_rights: file %s requesting "
167 "0x%x returning 0x%x (%s)\n",
168 smb_fname_str_dbg(smb_fname),
169 (unsigned int)access_mask,
170 (unsigned int)rejected_mask,
171 nt_errstr(status) ));
173 if (!NT_STATUS_IS_OK(status)) {
174 if (DEBUGLEVEL >= 10) {
175 DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
176 smb_fname_str_dbg(smb_fname) ));
177 NDR_PRINT_DEBUG(security_descriptor, sd);
183 if (NT_STATUS_IS_OK(status) ||
184 !NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
188 /* Here we know status == NT_STATUS_ACCESS_DENIED. */
192 if ((access_mask & FILE_WRITE_ATTRIBUTES) &&
193 (rejected_mask & FILE_WRITE_ATTRIBUTES) &&
194 !lp_store_dos_attributes(SNUM(conn)) &&
195 (lp_map_readonly(SNUM(conn)) ||
196 lp_map_archive(SNUM(conn)) ||
197 lp_map_hidden(SNUM(conn)) ||
198 lp_map_system(SNUM(conn)))) {
199 rejected_mask &= ~FILE_WRITE_ATTRIBUTES;
201 DEBUG(10,("smbd_check_access_rights: "
203 "FILE_WRITE_ATTRIBUTES "
205 smb_fname_str_dbg(smb_fname)));
208 if (parent_override_delete(conn,
212 /* Were we trying to do an open
213 * for delete and didn't get DELETE
214 * access (only) ? Check if the
215 * directory allows DELETE_CHILD.
217 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
220 rejected_mask &= ~DELETE_ACCESS;
222 DEBUG(10,("smbd_check_access_rights: "
226 smb_fname_str_dbg(smb_fname)));
229 if (rejected_mask != 0) {
230 return NT_STATUS_ACCESS_DENIED;
235 static NTSTATUS check_parent_access(struct connection_struct *conn,
236 struct smb_filename *smb_fname,
237 uint32_t access_mask)
240 char *parent_dir = NULL;
241 struct security_descriptor *parent_sd = NULL;
242 uint32_t access_granted = 0;
244 if (!parent_dirname(talloc_tos(),
245 smb_fname->base_name,
248 return NT_STATUS_NO_MEMORY;
251 if (get_current_uid(conn) == (uid_t)0) {
252 /* I'm sorry sir, I didn't know you were root... */
253 DEBUG(10,("check_parent_access: root override "
254 "on %s. Granting 0x%x\n",
255 smb_fname_str_dbg(smb_fname),
256 (unsigned int)access_mask ));
260 status = SMB_VFS_GET_NT_ACL(conn,
266 if (!NT_STATUS_IS_OK(status)) {
267 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
268 "%s with error %s\n",
275 * If we can access the path to this file, by
276 * default we have FILE_READ_ATTRIBUTES from the
277 * containing directory. See the section:
278 * "Algorithm to Check Access to an Existing File"
281 * se_file_access_check() also takes care of
282 * owner WRITE_DAC and READ_CONTROL.
284 status = se_file_access_check(parent_sd,
285 get_current_nttok(conn),
287 (access_mask & ~FILE_READ_ATTRIBUTES),
289 if(!NT_STATUS_IS_OK(status)) {
290 DEBUG(5,("check_parent_access: access check "
291 "on directory %s for "
292 "path %s for mask 0x%x returned (0x%x) %s\n",
294 smb_fname->base_name,
297 nt_errstr(status) ));
304 /****************************************************************************
305 fd support routines - attempt to do a dos_open.
306 ****************************************************************************/
308 NTSTATUS fd_open(struct connection_struct *conn,
313 struct smb_filename *smb_fname = fsp->fsp_name;
314 NTSTATUS status = NT_STATUS_OK;
318 * Never follow symlinks on a POSIX client. The
319 * client should be doing this.
322 if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
327 fsp->fh->fd = SMB_VFS_OPEN(conn, smb_fname, fsp, flags, mode);
328 if (fsp->fh->fd == -1) {
329 int posix_errno = errno;
331 #if defined(ENOTSUP) && defined(OSF1)
332 /* handle special Tru64 errno */
333 if (errno == ENOTSUP) {
338 /* fix broken NetBSD errno */
339 if (errno == EFTYPE) {
343 /* fix broken FreeBSD errno */
344 if (errno == EMLINK) {
347 #endif /* O_NOFOLLOW */
348 status = map_nt_error_from_unix(posix_errno);
349 if (errno == EMFILE) {
350 static time_t last_warned = 0L;
352 if (time((time_t *) NULL) > last_warned) {
353 DEBUG(0,("Too many open files, unable "
354 "to open more! smbd's max "
356 lp_max_open_files()));
357 last_warned = time((time_t *) NULL);
363 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
364 smb_fname_str_dbg(smb_fname), flags, (int)mode, fsp->fh->fd,
365 (fsp->fh->fd == -1) ? strerror(errno) : "" ));
370 /****************************************************************************
371 Close the file associated with a fsp.
372 ****************************************************************************/
374 NTSTATUS fd_close(files_struct *fsp)
381 if (fsp->fh->fd == -1) {
382 return NT_STATUS_OK; /* What we used to call a stat open. */
384 if (fsp->fh->ref_count > 1) {
385 return NT_STATUS_OK; /* Shared handle. Only close last reference. */
388 ret = SMB_VFS_CLOSE(fsp);
391 return map_nt_error_from_unix(errno);
396 /****************************************************************************
397 Change the ownership of a file to that of the parent directory.
398 Do this by fd if possible.
399 ****************************************************************************/
401 void change_file_owner_to_parent(connection_struct *conn,
402 const char *inherit_from_dir,
405 struct smb_filename *smb_fname_parent;
408 smb_fname_parent = synthetic_smb_fname(talloc_tos(), inherit_from_dir,
410 if (smb_fname_parent == NULL) {
414 ret = SMB_VFS_STAT(conn, smb_fname_parent);
416 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
417 "directory %s. Error was %s\n",
418 smb_fname_str_dbg(smb_fname_parent),
420 TALLOC_FREE(smb_fname_parent);
424 if (smb_fname_parent->st.st_ex_uid == fsp->fsp_name->st.st_ex_uid) {
425 /* Already this uid - no need to change. */
426 DEBUG(10,("change_file_owner_to_parent: file %s "
427 "is already owned by uid %d\n",
429 (int)fsp->fsp_name->st.st_ex_uid ));
430 TALLOC_FREE(smb_fname_parent);
435 ret = SMB_VFS_FCHOWN(fsp, smb_fname_parent->st.st_ex_uid, (gid_t)-1);
438 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
439 "file %s to parent directory uid %u. Error "
440 "was %s\n", fsp_str_dbg(fsp),
441 (unsigned int)smb_fname_parent->st.st_ex_uid,
444 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
445 "parent directory uid %u.\n", fsp_str_dbg(fsp),
446 (unsigned int)smb_fname_parent->st.st_ex_uid));
447 /* Ensure the uid entry is updated. */
448 fsp->fsp_name->st.st_ex_uid = smb_fname_parent->st.st_ex_uid;
451 TALLOC_FREE(smb_fname_parent);
454 NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
455 const char *inherit_from_dir,
457 SMB_STRUCT_STAT *psbuf)
459 struct smb_filename *smb_fname_parent;
460 struct smb_filename *smb_fname_cwd = NULL;
461 char *saved_dir = NULL;
462 TALLOC_CTX *ctx = talloc_tos();
463 NTSTATUS status = NT_STATUS_OK;
466 smb_fname_parent = synthetic_smb_fname(ctx, inherit_from_dir,
468 if (smb_fname_parent == NULL) {
469 return NT_STATUS_NO_MEMORY;
472 ret = SMB_VFS_STAT(conn, smb_fname_parent);
474 status = map_nt_error_from_unix(errno);
475 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
476 "directory %s. Error was %s\n",
477 smb_fname_str_dbg(smb_fname_parent),
482 /* We've already done an lstat into psbuf, and we know it's a
483 directory. If we can cd into the directory and the dev/ino
484 are the same then we can safely chown without races as
485 we're locking the directory in place by being in it. This
486 should work on any UNIX (thanks tridge :-). JRA.
489 saved_dir = vfs_GetWd(ctx,conn);
491 status = map_nt_error_from_unix(errno);
492 DEBUG(0,("change_dir_owner_to_parent: failed to get "
493 "current working directory. Error was %s\n",
498 /* Chdir into the new path. */
499 if (vfs_ChDir(conn, fname) == -1) {
500 status = map_nt_error_from_unix(errno);
501 DEBUG(0,("change_dir_owner_to_parent: failed to change "
502 "current working directory to %s. Error "
503 "was %s\n", fname, strerror(errno) ));
507 smb_fname_cwd = synthetic_smb_fname(ctx, ".", NULL, NULL);
508 if (smb_fname_cwd == NULL) {
509 status = NT_STATUS_NO_MEMORY;
513 ret = SMB_VFS_STAT(conn, smb_fname_cwd);
515 status = map_nt_error_from_unix(errno);
516 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
517 "directory '.' (%s) Error was %s\n",
518 fname, strerror(errno)));
522 /* Ensure we're pointing at the same place. */
523 if (smb_fname_cwd->st.st_ex_dev != psbuf->st_ex_dev ||
524 smb_fname_cwd->st.st_ex_ino != psbuf->st_ex_ino) {
525 DEBUG(0,("change_dir_owner_to_parent: "
526 "device/inode on directory %s changed. "
527 "Refusing to chown !\n", fname ));
528 status = NT_STATUS_ACCESS_DENIED;
532 if (smb_fname_parent->st.st_ex_uid == smb_fname_cwd->st.st_ex_uid) {
533 /* Already this uid - no need to change. */
534 DEBUG(10,("change_dir_owner_to_parent: directory %s "
535 "is already owned by uid %d\n",
537 (int)smb_fname_cwd->st.st_ex_uid ));
538 status = NT_STATUS_OK;
543 ret = SMB_VFS_LCHOWN(conn, ".", smb_fname_parent->st.st_ex_uid,
547 status = map_nt_error_from_unix(errno);
548 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
549 "directory %s to parent directory uid %u. "
550 "Error was %s\n", fname,
551 (unsigned int)smb_fname_parent->st.st_ex_uid,
554 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
555 "directory %s to parent directory uid %u.\n",
556 fname, (unsigned int)smb_fname_parent->st.st_ex_uid ));
557 /* Ensure the uid entry is updated. */
558 psbuf->st_ex_uid = smb_fname_parent->st.st_ex_uid;
562 vfs_ChDir(conn,saved_dir);
564 TALLOC_FREE(smb_fname_parent);
565 TALLOC_FREE(smb_fname_cwd);
569 /****************************************************************************
570 Open a file - returning a guaranteed ATOMIC indication of if the
571 file was created or not.
572 ****************************************************************************/
574 static NTSTATUS fd_open_atomic(struct connection_struct *conn,
580 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
581 bool file_existed = VALID_STAT(fsp->fsp_name->st);
583 *file_created = false;
585 if (!(flags & O_CREAT)) {
587 * We're not creating the file, just pass through.
589 return fd_open(conn, fsp, flags, mode);
592 if (flags & O_EXCL) {
594 * Fail if already exists, just pass through.
596 status = fd_open(conn, fsp, flags, mode);
599 * Here we've opened with O_CREAT|O_EXCL. If that went
600 * NT_STATUS_OK, we *know* we created this file.
602 *file_created = NT_STATUS_IS_OK(status);
608 * Now it gets tricky. We have O_CREAT, but not O_EXCL.
609 * To know absolutely if we created the file or not,
610 * we can never call O_CREAT without O_EXCL. So if
611 * we think the file existed, try without O_CREAT|O_EXCL.
612 * If we think the file didn't exist, try with
613 * O_CREAT|O_EXCL. Keep bouncing between these two
614 * requests until either the file is created, or
615 * opened. Either way, we keep going until we get
616 * a returnable result (error, or open/create).
620 int curr_flags = flags;
623 /* Just try open, do not create. */
624 curr_flags &= ~(O_CREAT);
625 status = fd_open(conn, fsp, curr_flags, mode);
626 if (NT_STATUS_EQUAL(status,
627 NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
629 * Someone deleted it in the meantime.
632 file_existed = false;
633 DEBUG(10,("fd_open_atomic: file %s existed. "
635 smb_fname_str_dbg(fsp->fsp_name)));
639 /* Try create exclusively, fail if it exists. */
640 curr_flags |= O_EXCL;
641 status = fd_open(conn, fsp, curr_flags, mode);
642 if (NT_STATUS_EQUAL(status,
643 NT_STATUS_OBJECT_NAME_COLLISION)) {
645 * Someone created it in the meantime.
646 * Retry without O_CREAT.
649 DEBUG(10,("fd_open_atomic: file %s "
650 "did not exist. Retry.\n",
651 smb_fname_str_dbg(fsp->fsp_name)));
654 if (NT_STATUS_IS_OK(status)) {
656 * Here we've opened with O_CREAT|O_EXCL
657 * and got success. We *know* we created
660 *file_created = true;
663 /* Create is done, or failed. */
669 /****************************************************************************
671 ****************************************************************************/
673 static NTSTATUS open_file(files_struct *fsp,
674 connection_struct *conn,
675 struct smb_request *req,
676 const char *parent_dir,
679 uint32 access_mask, /* client requested access mask. */
680 uint32 open_access_mask, /* what we're actually using in the open. */
681 bool *p_file_created)
683 struct smb_filename *smb_fname = fsp->fsp_name;
684 NTSTATUS status = NT_STATUS_OK;
685 int accmode = (flags & O_ACCMODE);
686 int local_flags = flags;
687 bool file_existed = VALID_STAT(fsp->fsp_name->st);
692 /* Check permissions */
695 * This code was changed after seeing a client open request
696 * containing the open mode of (DENY_WRITE/read-only) with
697 * the 'create if not exist' bit set. The previous code
698 * would fail to open the file read only on a read-only share
699 * as it was checking the flags parameter directly against O_RDONLY,
700 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
704 if (!CAN_WRITE(conn)) {
705 /* It's a read-only share - fail if we wanted to write. */
706 if(accmode != O_RDONLY || (flags & O_TRUNC) || (flags & O_APPEND)) {
707 DEBUG(3,("Permission denied opening %s\n",
708 smb_fname_str_dbg(smb_fname)));
709 return NT_STATUS_ACCESS_DENIED;
711 if (flags & O_CREAT) {
712 /* We don't want to write - but we must make sure that
713 O_CREAT doesn't create the file if we have write
714 access into the directory.
716 flags &= ~(O_CREAT|O_EXCL);
717 local_flags &= ~(O_CREAT|O_EXCL);
722 * This little piece of insanity is inspired by the
723 * fact that an NT client can open a file for O_RDONLY,
724 * but set the create disposition to FILE_EXISTS_TRUNCATE.
725 * If the client *can* write to the file, then it expects to
726 * truncate the file, even though it is opening for readonly.
727 * Quicken uses this stupid trick in backup file creation...
728 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
729 * for helping track this one down. It didn't bite us in 2.0.x
730 * as we always opened files read-write in that release. JRA.
733 if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
734 DEBUG(10,("open_file: truncate requested on read-only open "
735 "for file %s\n", smb_fname_str_dbg(smb_fname)));
736 local_flags = (flags & ~O_ACCMODE)|O_RDWR;
739 if ((open_access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
740 (!file_existed && (local_flags & O_CREAT)) ||
741 ((local_flags & O_TRUNC) == O_TRUNC) ) {
745 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
747 * We would block on opening a FIFO with no one else on the
748 * other end. Do what we used to do and add O_NONBLOCK to the
752 if (file_existed && S_ISFIFO(smb_fname->st.st_ex_mode)) {
753 local_flags &= ~O_TRUNC; /* Can't truncate a FIFO. */
754 local_flags |= O_NONBLOCK;
758 /* Don't create files with Microsoft wildcard characters. */
761 * wildcard characters are allowed in stream names
762 * only test the basefilename
764 wild = fsp->base_fsp->fsp_name->base_name;
766 wild = smb_fname->base_name;
768 if ((local_flags & O_CREAT) && !file_existed &&
770 return NT_STATUS_OBJECT_NAME_INVALID;
773 /* Can we access this file ? */
774 if (!fsp->base_fsp) {
775 /* Only do this check on non-stream open. */
777 status = smbd_check_access_rights(conn,
781 } else if (local_flags & O_CREAT){
782 status = check_parent_access(conn,
786 /* File didn't exist and no O_CREAT. */
787 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
789 if (!NT_STATUS_IS_OK(status)) {
790 DEBUG(10,("open_file: "
794 "smbd_check_access_rights" :
795 "check_parent_access",
796 smb_fname_str_dbg(smb_fname),
797 nt_errstr(status) ));
802 /* Actually do the open */
803 status = fd_open_atomic(conn, fsp, local_flags,
804 unx_mode, p_file_created);
805 if (!NT_STATUS_IS_OK(status)) {
806 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
807 "(flags=%d)\n", smb_fname_str_dbg(smb_fname),
808 nt_errstr(status),local_flags,flags));
812 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
814 /* If we have an fd, this stat should succeed. */
815 DEBUG(0,("Error doing fstat on open file %s "
817 smb_fname_str_dbg(smb_fname),
819 status = map_nt_error_from_unix(errno);
824 if (*p_file_created) {
825 /* We created this file. */
827 bool need_re_stat = false;
828 /* Do all inheritance work after we've
829 done a successful fstat call and filled
830 in the stat struct in fsp->fsp_name. */
832 /* Inherit the ACL if required */
833 if (lp_inherit_perms(SNUM(conn))) {
834 inherit_access_posix_acl(conn, parent_dir,
835 smb_fname->base_name,
840 /* Change the owner if required. */
841 if (lp_inherit_owner(SNUM(conn))) {
842 change_file_owner_to_parent(conn, parent_dir,
848 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
849 /* If we have an fd, this stat should succeed. */
851 DEBUG(0,("Error doing fstat on open file %s "
853 smb_fname_str_dbg(smb_fname),
858 notify_fname(conn, NOTIFY_ACTION_ADDED,
859 FILE_NOTIFY_CHANGE_FILE_NAME,
860 smb_fname->base_name);
863 fsp->fh->fd = -1; /* What we used to call a stat open. */
865 /* File must exist for a stat open. */
866 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
869 status = smbd_check_access_rights(conn,
874 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND) &&
876 S_ISLNK(smb_fname->st.st_ex_mode)) {
877 /* This is a POSIX stat open for delete
878 * or rename on a symlink that points
880 DEBUG(10,("open_file: allowing POSIX "
881 "open on bad symlink %s\n",
882 smb_fname_str_dbg(smb_fname)));
883 status = NT_STATUS_OK;
886 if (!NT_STATUS_IS_OK(status)) {
887 DEBUG(10,("open_file: "
888 "smbd_check_access_rights on file "
890 smb_fname_str_dbg(smb_fname),
891 nt_errstr(status) ));
897 * POSIX allows read-only opens of directories. We don't
898 * want to do this (we use a different code path for this)
899 * so catch a directory open and return an EISDIR. JRA.
902 if(S_ISDIR(smb_fname->st.st_ex_mode)) {
905 return NT_STATUS_FILE_IS_A_DIRECTORY;
908 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
909 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
910 fsp->file_pid = req ? req->smbpid : 0;
911 fsp->can_lock = True;
912 fsp->can_read = ((access_mask & FILE_READ_DATA) != 0);
915 ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) != 0);
916 fsp->print_file = NULL;
917 fsp->modified = False;
918 fsp->sent_oplock_break = NO_BREAK_SENT;
919 fsp->is_directory = False;
920 if (conn->aio_write_behind_list &&
921 is_in_path(smb_fname->base_name, conn->aio_write_behind_list,
922 conn->case_sensitive)) {
923 fsp->aio_write_behind = True;
926 fsp->wcp = NULL; /* Write cache pointer. */
928 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
929 conn->session_info->unix_info->unix_name,
930 smb_fname_str_dbg(smb_fname),
931 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
932 conn->num_files_open));
938 /****************************************************************************
939 Check if we can open a file with a share mode.
940 Returns True if conflict, False if not.
941 ****************************************************************************/
943 static bool share_conflict(struct share_mode_entry *entry,
947 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
948 "entry->share_access = 0x%x, "
949 "entry->private_options = 0x%x\n",
950 (unsigned int)entry->access_mask,
951 (unsigned int)entry->share_access,
952 (unsigned int)entry->private_options));
954 if (server_id_is_disconnected(&entry->pid)) {
956 * note: cleanup should have been done by
957 * delay_for_batch_oplocks()
962 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
963 (unsigned int)access_mask, (unsigned int)share_access));
965 if ((entry->access_mask & (FILE_WRITE_DATA|
969 DELETE_ACCESS)) == 0) {
970 DEBUG(10,("share_conflict: No conflict due to "
971 "entry->access_mask = 0x%x\n",
972 (unsigned int)entry->access_mask ));
976 if ((access_mask & (FILE_WRITE_DATA|
980 DELETE_ACCESS)) == 0) {
981 DEBUG(10,("share_conflict: No conflict due to "
982 "access_mask = 0x%x\n",
983 (unsigned int)access_mask ));
987 #if 1 /* JRA TEST - Superdebug. */
988 #define CHECK_MASK(num, am, right, sa, share) \
989 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
990 (unsigned int)(num), (unsigned int)(am), \
991 (unsigned int)(right), (unsigned int)(am)&(right) )); \
992 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
993 (unsigned int)(num), (unsigned int)(sa), \
994 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
995 if (((am) & (right)) && !((sa) & (share))) { \
996 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
997 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
998 (unsigned int)(share) )); \
1002 #define CHECK_MASK(num, am, right, sa, share) \
1003 if (((am) & (right)) && !((sa) & (share))) { \
1004 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
1005 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
1006 (unsigned int)(share) )); \
1011 CHECK_MASK(1, entry->access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
1012 share_access, FILE_SHARE_WRITE);
1013 CHECK_MASK(2, access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
1014 entry->share_access, FILE_SHARE_WRITE);
1016 CHECK_MASK(3, entry->access_mask, FILE_READ_DATA | FILE_EXECUTE,
1017 share_access, FILE_SHARE_READ);
1018 CHECK_MASK(4, access_mask, FILE_READ_DATA | FILE_EXECUTE,
1019 entry->share_access, FILE_SHARE_READ);
1021 CHECK_MASK(5, entry->access_mask, DELETE_ACCESS,
1022 share_access, FILE_SHARE_DELETE);
1023 CHECK_MASK(6, access_mask, DELETE_ACCESS,
1024 entry->share_access, FILE_SHARE_DELETE);
1026 DEBUG(10,("share_conflict: No conflict.\n"));
1030 #if defined(DEVELOPER)
1031 static void validate_my_share_entries(struct smbd_server_connection *sconn,
1033 struct share_mode_entry *share_entry)
1035 struct server_id self = messaging_server_id(sconn->msg_ctx);
1038 if (!serverid_equal(&self, &share_entry->pid)) {
1042 if (!is_valid_share_mode_entry(share_entry)) {
1046 fsp = file_find_dif(sconn, share_entry->id,
1047 share_entry->share_file_id);
1049 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1050 share_mode_str(talloc_tos(), num, share_entry) ));
1051 smb_panic("validate_my_share_entries: Cannot match a "
1052 "share entry with an open file\n");
1055 if ((share_entry->op_type == NO_OPLOCK) &&
1056 (fsp->oplock_type == FAKE_LEVEL_II_OPLOCK))
1058 /* Someone has already written to it, but I haven't yet
1063 if (((uint16)fsp->oplock_type) != share_entry->op_type) {
1072 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1073 share_mode_str(talloc_tos(), num, share_entry) ));
1074 str = talloc_asprintf(talloc_tos(),
1075 "validate_my_share_entries: "
1076 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
1077 fsp->fsp_name->base_name,
1078 (unsigned int)fsp->oplock_type,
1079 (unsigned int)share_entry->op_type );
1085 bool is_stat_open(uint32 access_mask)
1087 const uint32_t stat_open_bits =
1088 (SYNCHRONIZE_ACCESS|
1089 FILE_READ_ATTRIBUTES|
1090 FILE_WRITE_ATTRIBUTES);
1092 return (((access_mask & stat_open_bits) != 0) &&
1093 ((access_mask & ~stat_open_bits) == 0));
1096 /****************************************************************************
1097 Deal with share modes
1098 Invarient: Share mode must be locked on entry and exit.
1099 Returns -1 on error, or number of share modes on success (may be zero).
1100 ****************************************************************************/
1102 static NTSTATUS open_mode_check(connection_struct *conn,
1103 struct share_mode_lock *lck,
1106 uint32 share_access,
1107 uint32 create_options,
1112 if(lck->data->num_share_modes == 0) {
1113 return NT_STATUS_OK;
1116 /* A delete on close prohibits everything */
1118 if (is_delete_on_close_set(lck, name_hash)) {
1120 * Check the delete on close token
1121 * is valid. It could have been left
1122 * after a server crash.
1124 for(i = 0; i < lck->data->num_share_modes; i++) {
1125 if (!share_mode_stale_pid(lck->data, i)) {
1127 *file_existed = true;
1129 return NT_STATUS_DELETE_PENDING;
1132 return NT_STATUS_OK;
1135 if (is_stat_open(access_mask)) {
1136 /* Stat open that doesn't trigger oplock breaks or share mode
1137 * checks... ! JRA. */
1138 return NT_STATUS_OK;
1142 * Check if the share modes will give us access.
1145 #if defined(DEVELOPER)
1146 for(i = 0; i < lck->data->num_share_modes; i++) {
1147 validate_my_share_entries(conn->sconn, i,
1148 &lck->data->share_modes[i]);
1152 /* Now we check the share modes, after any oplock breaks. */
1153 for(i = 0; i < lck->data->num_share_modes; i++) {
1155 if (!is_valid_share_mode_entry(&lck->data->share_modes[i])) {
1159 /* someone else has a share lock on it, check to see if we can
1161 if (share_conflict(&lck->data->share_modes[i],
1162 access_mask, share_access)) {
1164 if (share_mode_stale_pid(lck->data, i)) {
1168 *file_existed = true;
1170 return NT_STATUS_SHARING_VIOLATION;
1174 if (lck->data->num_share_modes != 0) {
1175 *file_existed = true;
1178 return NT_STATUS_OK;
1182 * Send a break message to the oplock holder and delay the open for
1186 static NTSTATUS send_break_message(files_struct *fsp,
1187 struct share_mode_entry *exclusive,
1192 char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
1194 DEBUG(10, ("Sending break request to PID %s\n",
1195 procid_str_static(&exclusive->pid)));
1196 exclusive->op_mid = mid;
1198 /* Create the message. */
1199 share_mode_entry_to_message(msg, exclusive);
1201 status = messaging_send_buf(fsp->conn->sconn->msg_ctx, exclusive->pid,
1202 MSG_SMB_BREAK_REQUEST,
1203 (uint8 *)msg, sizeof(msg));
1204 if (!NT_STATUS_IS_OK(status)) {
1205 DEBUG(3, ("Could not send oplock break message: %s\n",
1206 nt_errstr(status)));
1213 * Return share_mode_entry pointers for :
1214 * 1). Batch oplock entry.
1215 * 2). Batch or exclusive oplock entry (may be identical to #1).
1216 * bool have_level2_oplock
1217 * bool have_no_oplock.
1218 * Do internal consistency checks on the share mode for a file.
1221 static void find_oplock_types(files_struct *fsp,
1223 const struct share_mode_lock *lck,
1224 struct share_mode_entry **pp_batch,
1225 struct share_mode_entry **pp_ex_or_batch,
1227 bool *got_no_oplock)
1232 *pp_ex_or_batch = NULL;
1233 *got_level2 = false;
1234 *got_no_oplock = false;
1236 /* Ignore stat or internal opens, as is done in
1237 delay_for_batch_oplocks() and
1238 delay_for_exclusive_oplocks().
1240 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1244 for (i=0; i<lck->data->num_share_modes; i++) {
1245 struct share_mode_entry *e = &lck->data->share_modes[i];
1247 if (!is_valid_share_mode_entry(e)) {
1251 if (e->op_type == NO_OPLOCK && is_stat_open(e->access_mask)) {
1252 /* We ignore stat opens in the table - they
1253 always have NO_OPLOCK and never get or
1254 cause breaks. JRA. */
1258 if (BATCH_OPLOCK_TYPE(e->op_type)) {
1259 /* batch - can only be one. */
1260 if (share_mode_stale_pid(lck->data, i)) {
1261 DEBUG(10, ("Found stale batch oplock\n"));
1264 if (*pp_ex_or_batch || *pp_batch || *got_level2 || *got_no_oplock) {
1265 smb_panic("Bad batch oplock entry.");
1270 if (EXCLUSIVE_OPLOCK_TYPE(e->op_type)) {
1271 if (share_mode_stale_pid(lck->data, i)) {
1272 DEBUG(10, ("Found stale duplicate oplock\n"));
1275 /* Exclusive or batch - can only be one. */
1276 if (*pp_ex_or_batch || *got_level2 || *got_no_oplock) {
1277 smb_panic("Bad exclusive or batch oplock entry.");
1279 *pp_ex_or_batch = e;
1282 if (LEVEL_II_OPLOCK_TYPE(e->op_type)) {
1283 if (*pp_batch || *pp_ex_or_batch) {
1284 if (share_mode_stale_pid(lck->data, i)) {
1285 DEBUG(10, ("Found stale LevelII "
1289 smb_panic("Bad levelII oplock entry.");
1294 if (e->op_type == NO_OPLOCK) {
1295 if (*pp_batch || *pp_ex_or_batch) {
1296 if (share_mode_stale_pid(lck->data, i)) {
1297 DEBUG(10, ("Found stale NO_OPLOCK "
1301 smb_panic("Bad no oplock entry.");
1303 *got_no_oplock = true;
1308 static bool delay_for_batch_oplocks(files_struct *fsp,
1311 struct share_mode_entry *batch_entry)
1313 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1316 if (batch_entry == NULL) {
1320 if (server_id_is_disconnected(&batch_entry->pid)) {
1323 * This could be achieved by sending a break message
1324 * to ourselves. Special considerations for files
1325 * with delete_on_close flag set!
1327 * For now we keep it simple and do not
1328 * allow delete on close for durable handles.
1333 /* Found a batch oplock */
1334 send_break_message(fsp, batch_entry, mid, oplock_request);
1338 static bool delay_for_exclusive_oplocks(files_struct *fsp,
1341 struct share_mode_entry *ex_entry)
1343 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1346 if (ex_entry == NULL) {
1350 if (server_id_is_disconnected(&ex_entry->pid)) {
1352 * since only durable handles can get disconnected,
1353 * and we can only get durable handles with batch oplocks,
1354 * this should actually never be reached...
1359 send_break_message(fsp, ex_entry, mid, oplock_request);
1363 static bool file_has_brlocks(files_struct *fsp)
1365 struct byte_range_lock *br_lck;
1367 br_lck = brl_get_locks_readonly(fsp);
1371 return (brl_num_locks(br_lck) > 0);
1374 static void grant_fsp_oplock_type(files_struct *fsp,
1376 bool got_level2_oplock,
1377 bool got_a_none_oplock)
1379 bool allow_level2 = (global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
1380 lp_level2_oplocks(SNUM(fsp->conn));
1382 /* Start by granting what the client asked for,
1383 but ensure no SAMBA_PRIVATE bits can be set. */
1384 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
1386 if (oplock_request & INTERNAL_OPEN_ONLY) {
1387 /* No oplocks on internal open. */
1388 fsp->oplock_type = NO_OPLOCK;
1389 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1390 fsp->oplock_type, fsp_str_dbg(fsp)));
1394 if (lp_locking(fsp->conn->params) && file_has_brlocks(fsp)) {
1395 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1397 fsp->oplock_type = NO_OPLOCK;
1400 if (is_stat_open(fsp->access_mask)) {
1401 /* Leave the value already set. */
1402 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1403 fsp->oplock_type, fsp_str_dbg(fsp)));
1408 * Match what was requested (fsp->oplock_type) with
1409 * what was found in the existing share modes.
1412 if (got_a_none_oplock) {
1413 fsp->oplock_type = NO_OPLOCK;
1414 } else if (got_level2_oplock) {
1415 if (fsp->oplock_type == NO_OPLOCK ||
1416 fsp->oplock_type == FAKE_LEVEL_II_OPLOCK) {
1417 /* Store a level2 oplock, but don't tell the client */
1418 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1420 fsp->oplock_type = LEVEL_II_OPLOCK;
1423 /* All share_mode_entries are placeholders or deferred.
1424 * Silently upgrade to fake levelII if the client didn't
1425 * ask for an oplock. */
1426 if (fsp->oplock_type == NO_OPLOCK) {
1427 /* Store a level2 oplock, but don't tell the client */
1428 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1433 * Don't grant level2 to clients that don't want them
1434 * or if we've turned them off.
1436 if (fsp->oplock_type == LEVEL_II_OPLOCK && !allow_level2) {
1437 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1440 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1441 fsp->oplock_type, fsp_str_dbg(fsp)));
1444 static bool request_timed_out(struct timeval request_time,
1445 struct timeval timeout)
1447 struct timeval now, end_time;
1449 end_time = timeval_sum(&request_time, &timeout);
1450 return (timeval_compare(&end_time, &now) < 0);
1453 struct defer_open_state {
1454 struct smbd_server_connection *sconn;
1458 static void defer_open_done(struct tevent_req *req);
1460 /****************************************************************************
1461 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1462 ****************************************************************************/
1464 static void defer_open(struct share_mode_lock *lck,
1465 struct timeval request_time,
1466 struct timeval timeout,
1467 struct smb_request *req,
1468 struct deferred_open_record *state)
1470 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1471 "open entry for mid %llu\n",
1472 (unsigned int)request_time.tv_sec,
1473 (unsigned int)request_time.tv_usec,
1474 (unsigned long long)req->mid));
1476 if (!push_deferred_open_message_smb(req, request_time, timeout,
1477 state->id, (char *)state, sizeof(*state))) {
1479 exit_server("push_deferred_open_message_smb failed");
1482 struct defer_open_state *watch_state;
1483 struct tevent_req *watch_req;
1486 watch_state = talloc(req->sconn, struct defer_open_state);
1487 if (watch_state == NULL) {
1488 exit_server("talloc failed");
1490 watch_state->sconn = req->sconn;
1491 watch_state->mid = req->mid;
1493 DEBUG(10, ("defering mid %llu\n",
1494 (unsigned long long)req->mid));
1496 watch_req = dbwrap_record_watch_send(
1497 watch_state, req->sconn->ev_ctx, lck->data->record,
1498 req->sconn->msg_ctx);
1499 if (watch_req == NULL) {
1500 exit_server("Could not watch share mode record");
1502 tevent_req_set_callback(watch_req, defer_open_done,
1505 ret = tevent_req_set_endtime(
1506 watch_req, req->sconn->ev_ctx,
1507 timeval_sum(&request_time, &timeout));
1512 static void defer_open_done(struct tevent_req *req)
1514 struct defer_open_state *state = tevent_req_callback_data(
1515 req, struct defer_open_state);
1519 status = dbwrap_record_watch_recv(req, talloc_tos(), NULL);
1521 if (!NT_STATUS_IS_OK(status)) {
1522 DEBUG(5, ("dbwrap_record_watch_recv returned %s\n",
1523 nt_errstr(status)));
1525 * Even if it failed, retry anyway. TODO: We need a way to
1526 * tell a re-scheduled open about that error.
1530 DEBUG(10, ("scheduling mid %llu\n", (unsigned long long)state->mid));
1532 ret = schedule_deferred_open_message_smb(state->sconn, state->mid);
1538 /****************************************************************************
1539 On overwrite open ensure that the attributes match.
1540 ****************************************************************************/
1542 static bool open_match_attributes(connection_struct *conn,
1543 uint32 old_dos_attr,
1544 uint32 new_dos_attr,
1545 mode_t existing_unx_mode,
1546 mode_t new_unx_mode,
1547 mode_t *returned_unx_mode)
1549 uint32 noarch_old_dos_attr, noarch_new_dos_attr;
1551 noarch_old_dos_attr = (old_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1552 noarch_new_dos_attr = (new_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1554 if((noarch_old_dos_attr == 0 && noarch_new_dos_attr != 0) ||
1555 (noarch_old_dos_attr != 0 && ((noarch_old_dos_attr & noarch_new_dos_attr) == noarch_old_dos_attr))) {
1556 *returned_unx_mode = new_unx_mode;
1558 *returned_unx_mode = (mode_t)0;
1561 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1562 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1563 "returned_unx_mode = 0%o\n",
1564 (unsigned int)old_dos_attr,
1565 (unsigned int)existing_unx_mode,
1566 (unsigned int)new_dos_attr,
1567 (unsigned int)*returned_unx_mode ));
1569 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1570 if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1571 if ((old_dos_attr & FILE_ATTRIBUTE_SYSTEM) &&
1572 !(new_dos_attr & FILE_ATTRIBUTE_SYSTEM)) {
1576 if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1577 if ((old_dos_attr & FILE_ATTRIBUTE_HIDDEN) &&
1578 !(new_dos_attr & FILE_ATTRIBUTE_HIDDEN)) {
1585 /****************************************************************************
1586 Special FCB or DOS processing in the case of a sharing violation.
1587 Try and find a duplicated file handle.
1588 ****************************************************************************/
1590 static NTSTATUS fcb_or_dos_open(struct smb_request *req,
1591 connection_struct *conn,
1592 files_struct *fsp_to_dup_into,
1593 const struct smb_filename *smb_fname,
1598 uint32 share_access,
1599 uint32 create_options)
1603 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1604 "file %s.\n", smb_fname_str_dbg(smb_fname)));
1606 for(fsp = file_find_di_first(conn->sconn, id); fsp;
1607 fsp = file_find_di_next(fsp)) {
1609 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1610 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1611 "access_mask = 0x%x\n", fsp_str_dbg(fsp),
1612 fsp->fh->fd, (unsigned long long)fsp->vuid,
1613 (unsigned int)fsp->file_pid,
1614 (unsigned int)fsp->fh->private_options,
1615 (unsigned int)fsp->access_mask ));
1617 if (fsp != fsp_to_dup_into &&
1618 fsp->fh->fd != -1 &&
1619 fsp->vuid == vuid &&
1620 fsp->file_pid == file_pid &&
1621 (fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
1622 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
1623 (fsp->access_mask & FILE_WRITE_DATA) &&
1624 strequal(fsp->fsp_name->base_name, smb_fname->base_name) &&
1625 strequal(fsp->fsp_name->stream_name,
1626 smb_fname->stream_name)) {
1627 DEBUG(10,("fcb_or_dos_open: file match\n"));
1633 return NT_STATUS_NOT_FOUND;
1636 /* quite an insane set of semantics ... */
1637 if (is_executable(smb_fname->base_name) &&
1638 (fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
1639 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1640 return NT_STATUS_INVALID_PARAMETER;
1643 /* We need to duplicate this fsp. */
1644 return dup_file_fsp(req, fsp, access_mask, share_access,
1645 create_options, fsp_to_dup_into);
1648 static void schedule_defer_open(struct share_mode_lock *lck,
1649 struct timeval request_time,
1650 struct smb_request *req)
1652 struct deferred_open_record state;
1654 /* This is a relative time, added to the absolute
1655 request_time value to get the absolute timeout time.
1656 Note that if this is the second or greater time we enter
1657 this codepath for this particular request mid then
1658 request_time is left as the absolute time of the *first*
1659 time this request mid was processed. This is what allows
1660 the request to eventually time out. */
1662 struct timeval timeout;
1664 /* Normally the smbd we asked should respond within
1665 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1666 * the client did, give twice the timeout as a safety
1667 * measure here in case the other smbd is stuck
1668 * somewhere else. */
1670 timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
1672 /* Nothing actually uses state.delayed_for_oplocks
1673 but it's handy to differentiate in debug messages
1674 between a 30 second delay due to oplock break, and
1675 a 1 second delay for share mode conflicts. */
1677 state.delayed_for_oplocks = True;
1678 state.async_open = false;
1679 state.id = lck->data->id;
1681 if (!request_timed_out(request_time, timeout)) {
1682 defer_open(lck, request_time, timeout, req, &state);
1686 /****************************************************************************
1687 Reschedule an open call that went asynchronous.
1688 ****************************************************************************/
1690 static void schedule_async_open(struct timeval request_time,
1691 struct smb_request *req)
1693 struct deferred_open_record state;
1694 struct timeval timeout;
1696 timeout = timeval_set(20, 0);
1699 state.delayed_for_oplocks = false;
1700 state.async_open = true;
1702 if (!request_timed_out(request_time, timeout)) {
1703 defer_open(NULL, request_time, timeout, req, &state);
1707 /****************************************************************************
1708 Work out what access_mask to use from what the client sent us.
1709 ****************************************************************************/
1711 static NTSTATUS smbd_calculate_maximum_allowed_access(
1712 connection_struct *conn,
1713 const struct smb_filename *smb_fname,
1715 uint32_t *p_access_mask)
1717 struct security_descriptor *sd;
1718 uint32_t access_granted;
1721 if (!use_privs && (get_current_uid(conn) == (uid_t)0)) {
1722 *p_access_mask |= FILE_GENERIC_ALL;
1723 return NT_STATUS_OK;
1726 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
1732 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1734 * File did not exist
1736 *p_access_mask = FILE_GENERIC_ALL;
1737 return NT_STATUS_OK;
1739 if (!NT_STATUS_IS_OK(status)) {
1740 DEBUG(10,("Could not get acl on file %s: %s\n",
1741 smb_fname_str_dbg(smb_fname),
1742 nt_errstr(status)));
1743 return NT_STATUS_ACCESS_DENIED;
1747 * If we can access the path to this file, by
1748 * default we have FILE_READ_ATTRIBUTES from the
1749 * containing directory. See the section:
1750 * "Algorithm to Check Access to an Existing File"
1753 * se_file_access_check()
1754 * also takes care of owner WRITE_DAC and READ_CONTROL.
1756 status = se_file_access_check(sd,
1757 get_current_nttok(conn),
1759 (*p_access_mask & ~FILE_READ_ATTRIBUTES),
1764 if (!NT_STATUS_IS_OK(status)) {
1765 DEBUG(10, ("Access denied on file %s: "
1766 "when calculating maximum access\n",
1767 smb_fname_str_dbg(smb_fname)));
1768 return NT_STATUS_ACCESS_DENIED;
1770 *p_access_mask = (access_granted | FILE_READ_ATTRIBUTES);
1772 if (!(access_granted & DELETE_ACCESS)) {
1773 if (can_delete_file_in_directory(conn, smb_fname)) {
1774 *p_access_mask |= DELETE_ACCESS;
1778 return NT_STATUS_OK;
1781 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
1782 const struct smb_filename *smb_fname,
1784 uint32_t access_mask,
1785 uint32_t *access_mask_out)
1788 uint32_t orig_access_mask = access_mask;
1789 uint32_t rejected_share_access;
1792 * Convert GENERIC bits to specific bits.
1795 se_map_generic(&access_mask, &file_generic_mapping);
1797 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1798 if (access_mask & MAXIMUM_ALLOWED_ACCESS) {
1800 status = smbd_calculate_maximum_allowed_access(
1801 conn, smb_fname, use_privs, &access_mask);
1803 if (!NT_STATUS_IS_OK(status)) {
1807 access_mask &= conn->share_access;
1810 rejected_share_access = access_mask & ~(conn->share_access);
1812 if (rejected_share_access) {
1813 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1814 "file %s: rejected by share access mask[0x%08X] "
1815 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1816 smb_fname_str_dbg(smb_fname),
1818 orig_access_mask, access_mask,
1819 rejected_share_access));
1820 return NT_STATUS_ACCESS_DENIED;
1823 *access_mask_out = access_mask;
1824 return NT_STATUS_OK;
1827 /****************************************************************************
1828 Remove the deferred open entry under lock.
1829 ****************************************************************************/
1831 /****************************************************************************
1832 Return true if this is a state pointer to an asynchronous create.
1833 ****************************************************************************/
1835 bool is_deferred_open_async(const void *ptr)
1837 const struct deferred_open_record *state = (const struct deferred_open_record *)ptr;
1839 return state->async_open;
1842 static bool clear_ads(uint32_t create_disposition)
1846 switch (create_disposition) {
1847 case FILE_SUPERSEDE:
1848 case FILE_OVERWRITE_IF:
1849 case FILE_OVERWRITE:
1858 static int disposition_to_open_flags(uint32_t create_disposition)
1863 * Currently we're using FILE_SUPERSEDE as the same as
1864 * FILE_OVERWRITE_IF but they really are
1865 * different. FILE_SUPERSEDE deletes an existing file
1866 * (requiring delete access) then recreates it.
1869 switch (create_disposition) {
1870 case FILE_SUPERSEDE:
1871 case FILE_OVERWRITE_IF:
1873 * If file exists replace/overwrite. If file doesn't
1876 ret = O_CREAT|O_TRUNC;
1881 * If file exists open. If file doesn't exist error.
1886 case FILE_OVERWRITE:
1888 * If file exists overwrite. If file doesn't exist
1896 * If file exists error. If file doesn't exist create.
1898 ret = O_CREAT|O_EXCL;
1903 * If file exists open. If file doesn't exist create.
1911 static int calculate_open_access_flags(uint32_t access_mask,
1913 uint32_t private_flags)
1915 bool need_write, need_read;
1918 * Note that we ignore the append flag as append does not
1919 * mean the same thing under DOS and Unix.
1922 need_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA));
1927 /* DENY_DOS opens are always underlying read-write on the
1928 file handle, no matter what the requested access mask
1932 ((private_flags & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
1933 access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|
1934 FILE_READ_EA|FILE_EXECUTE));
1942 /****************************************************************************
1943 Open a file with a share mode. Passed in an already created files_struct *.
1944 ****************************************************************************/
1946 static NTSTATUS open_file_ntcreate(connection_struct *conn,
1947 struct smb_request *req,
1948 uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
1949 uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
1950 uint32 create_disposition, /* FILE_OPEN_IF etc. */
1951 uint32 create_options, /* options such as delete on close. */
1952 uint32 new_dos_attributes, /* attributes used for new file. */
1953 int oplock_request, /* internal Samba oplock codes. */
1954 /* Information (FILE_EXISTS etc.) */
1955 uint32_t private_flags, /* Samba specific flags. */
1959 struct smb_filename *smb_fname = fsp->fsp_name;
1962 bool file_existed = VALID_STAT(smb_fname->st);
1963 bool def_acl = False;
1964 bool posix_open = False;
1965 bool new_file_created = False;
1966 bool first_open_attempt = true;
1967 NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
1968 mode_t new_unx_mode = (mode_t)0;
1969 mode_t unx_mode = (mode_t)0;
1971 uint32 existing_dos_attributes = 0;
1972 struct timeval request_time = timeval_zero();
1973 struct share_mode_lock *lck = NULL;
1974 uint32 open_access_mask = access_mask;
1977 SMB_STRUCT_STAT saved_stat = smb_fname->st;
1978 struct share_mode_entry *batch_entry = NULL;
1979 struct share_mode_entry *exclusive_entry = NULL;
1980 bool got_level2_oplock = false;
1981 bool got_a_none_oplock = false;
1982 struct timespec old_write_time;
1985 if (conn->printer) {
1987 * Printers are handled completely differently.
1988 * Most of the passed parameters are ignored.
1992 *pinfo = FILE_WAS_CREATED;
1995 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1996 smb_fname_str_dbg(smb_fname)));
1999 DEBUG(0,("open_file_ntcreate: printer open without "
2000 "an SMB request!\n"));
2001 return NT_STATUS_INTERNAL_ERROR;
2004 return print_spool_open(fsp, smb_fname->base_name,
2008 if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
2010 return NT_STATUS_NO_MEMORY;
2013 if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
2015 unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
2016 new_dos_attributes = 0;
2018 /* Windows allows a new file to be created and
2019 silently removes a FILE_ATTRIBUTE_DIRECTORY
2020 sent by the client. Do the same. */
2022 new_dos_attributes &= ~FILE_ATTRIBUTE_DIRECTORY;
2024 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
2026 unx_mode = unix_mode(conn, new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
2027 smb_fname, parent_dir);
2030 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
2031 "access_mask=0x%x share_access=0x%x "
2032 "create_disposition = 0x%x create_options=0x%x "
2033 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
2034 smb_fname_str_dbg(smb_fname), new_dos_attributes,
2035 access_mask, share_access, create_disposition,
2036 create_options, (unsigned int)unx_mode, oplock_request,
2037 (unsigned int)private_flags));
2039 if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
2040 DEBUG(0, ("No smb request but not an internal only open!\n"));
2041 return NT_STATUS_INTERNAL_ERROR;
2045 * Only non-internal opens can be deferred at all
2050 if (get_deferred_open_message_state(req,
2053 /* Remember the absolute time of the original
2054 request with this mid. We'll use it later to
2055 see if this has timed out. */
2057 /* If it was an async create retry, the file
2060 if (is_deferred_open_async(ptr)) {
2061 SET_STAT_INVALID(smb_fname->st);
2062 file_existed = false;
2065 /* Ensure we don't reprocess this message. */
2066 remove_deferred_open_message_smb(req->sconn, req->mid);
2068 first_open_attempt = false;
2073 new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
2075 existing_dos_attributes = dos_mode(conn, smb_fname);
2079 /* ignore any oplock requests if oplocks are disabled */
2080 if (!lp_oplocks(SNUM(conn)) ||
2081 IS_VETO_OPLOCK_PATH(conn, smb_fname->base_name)) {
2082 /* Mask off everything except the private Samba bits. */
2083 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
2086 /* this is for OS/2 long file names - say we don't support them */
2087 if (!lp_posix_pathnames() && strstr(smb_fname->base_name,".+,;=[].")) {
2088 /* OS/2 Workplace shell fix may be main code stream in a later
2090 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
2092 if (use_nt_status()) {
2093 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2095 return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
2098 switch( create_disposition ) {
2100 /* If file exists open. If file doesn't exist error. */
2101 if (!file_existed) {
2102 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
2103 "requested for file %s and file "
2105 smb_fname_str_dbg(smb_fname)));
2107 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2111 case FILE_OVERWRITE:
2112 /* If file exists overwrite. If file doesn't exist
2114 if (!file_existed) {
2115 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
2116 "requested for file %s and file "
2118 smb_fname_str_dbg(smb_fname) ));
2120 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2125 /* If file exists error. If file doesn't exist
2128 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
2129 "requested for file %s and file "
2130 "already exists.\n",
2131 smb_fname_str_dbg(smb_fname)));
2132 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
2137 return map_nt_error_from_unix(errno);
2141 case FILE_SUPERSEDE:
2142 case FILE_OVERWRITE_IF:
2146 return NT_STATUS_INVALID_PARAMETER;
2149 flags2 = disposition_to_open_flags(create_disposition);
2151 /* We only care about matching attributes on file exists and
2154 if (!posix_open && file_existed &&
2155 ((create_disposition == FILE_OVERWRITE) ||
2156 (create_disposition == FILE_OVERWRITE_IF))) {
2157 if (!open_match_attributes(conn, existing_dos_attributes,
2159 smb_fname->st.st_ex_mode,
2160 unx_mode, &new_unx_mode)) {
2161 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2162 "for file %s (%x %x) (0%o, 0%o)\n",
2163 smb_fname_str_dbg(smb_fname),
2164 existing_dos_attributes,
2166 (unsigned int)smb_fname->st.st_ex_mode,
2167 (unsigned int)unx_mode ));
2169 return NT_STATUS_ACCESS_DENIED;
2173 status = smbd_calculate_access_mask(conn, smb_fname,
2177 if (!NT_STATUS_IS_OK(status)) {
2178 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2179 "on file %s returned %s\n",
2180 smb_fname_str_dbg(smb_fname), nt_errstr(status)));
2184 open_access_mask = access_mask;
2186 if (flags2 & O_TRUNC) {
2187 open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
2190 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2191 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname),
2195 * Note that we ignore the append flag as append does not
2196 * mean the same thing under DOS and Unix.
2199 flags = calculate_open_access_flags(access_mask, oplock_request,
2203 * Currently we only look at FILE_WRITE_THROUGH for create options.
2207 if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
2212 if (posix_open && (access_mask & FILE_APPEND_DATA)) {
2216 if (!posix_open && !CAN_WRITE(conn)) {
2218 * We should really return a permission denied error if either
2219 * O_CREAT or O_TRUNC are set, but for compatibility with
2220 * older versions of Samba we just AND them out.
2222 flags2 &= ~(O_CREAT|O_TRUNC);
2225 if (first_open_attempt && lp_kernel_oplocks(SNUM(conn))) {
2227 * With kernel oplocks the open breaking an oplock
2228 * blocks until the oplock holder has given up the
2229 * oplock or closed the file. We prevent this by first
2230 * trying to open the file with O_NONBLOCK (see "man
2231 * fcntl" on Linux). For the second try, triggered by
2232 * an oplock break response, we do not need this
2235 * This is true under the assumption that only Samba
2236 * requests kernel oplocks. Once someone else like
2237 * NFSv4 starts to use that API, we will have to
2238 * modify this by communicating with the NFSv4 server.
2240 flags2 |= O_NONBLOCK;
2244 * Ensure we can't write on a read-only share or file.
2247 if (flags != O_RDONLY && file_existed &&
2248 (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
2249 DEBUG(5,("open_file_ntcreate: write access requested for "
2250 "file %s on read only %s\n",
2251 smb_fname_str_dbg(smb_fname),
2252 !CAN_WRITE(conn) ? "share" : "file" ));
2254 return NT_STATUS_ACCESS_DENIED;
2257 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
2258 fsp->share_access = share_access;
2259 fsp->fh->private_options = private_flags;
2260 fsp->access_mask = open_access_mask; /* We change this to the
2261 * requested access_mask after
2262 * the open is done. */
2263 fsp->posix_open = posix_open;
2265 /* Ensure no SAMBA_PRIVATE bits can be set. */
2266 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
2268 if (timeval_is_zero(&request_time)) {
2269 request_time = fsp->open_time;
2273 * Ensure we pay attention to default ACLs on directories if required.
2276 if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
2277 (def_acl = directory_has_default_acl(conn, parent_dir))) {
2278 unx_mode = (0777 & lp_create_mask(SNUM(conn)));
2281 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2282 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2283 (unsigned int)flags, (unsigned int)flags2,
2284 (unsigned int)unx_mode, (unsigned int)access_mask,
2285 (unsigned int)open_access_mask));
2287 fsp_open = open_file(fsp, conn, req, parent_dir,
2288 flags|flags2, unx_mode, access_mask,
2289 open_access_mask, &new_file_created);
2291 if (NT_STATUS_EQUAL(fsp_open, NT_STATUS_NETWORK_BUSY)) {
2292 struct deferred_open_record state;
2295 * EWOULDBLOCK/EAGAIN maps to NETWORK_BUSY.
2297 if (file_existed && S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
2298 DEBUG(10, ("FIFO busy\n"));
2299 return NT_STATUS_NETWORK_BUSY;
2302 DEBUG(10, ("Internal open busy\n"));
2303 return NT_STATUS_NETWORK_BUSY;
2307 * From here on we assume this is an oplock break triggered
2310 lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
2312 state.delayed_for_oplocks = false;
2313 state.async_open = false;
2314 state.id = fsp->file_id;
2315 defer_open(NULL, request_time, timeval_set(0, 0),
2317 DEBUG(10, ("No share mode lock found after "
2318 "EWOULDBLOCK, retrying sync\n"));
2319 return NT_STATUS_SHARING_VIOLATION;
2322 find_oplock_types(fsp, 0, lck, &batch_entry, &exclusive_entry,
2323 &got_level2_oplock, &got_a_none_oplock);
2325 if (delay_for_batch_oplocks(fsp, req->mid, 0, batch_entry) ||
2326 delay_for_exclusive_oplocks(fsp, req->mid, 0,
2328 schedule_defer_open(lck, request_time, req);
2330 DEBUG(10, ("Sent oplock break request to kernel "
2331 "oplock holder\n"));
2332 return NT_STATUS_SHARING_VIOLATION;
2336 * No oplock from Samba around. Immediately retry with
2339 state.delayed_for_oplocks = false;
2340 state.async_open = false;
2341 state.id = lck->data->id;
2342 defer_open(lck, request_time, timeval_set(0, 0), req, &state);
2344 DEBUG(10, ("No Samba oplock around after EWOULDBLOCK. "
2345 "Retrying sync\n"));
2346 return NT_STATUS_SHARING_VIOLATION;
2349 if (!NT_STATUS_IS_OK(fsp_open)) {
2350 if (NT_STATUS_EQUAL(fsp_open, NT_STATUS_RETRY)) {
2351 schedule_async_open(request_time, req);
2356 if (file_existed && !check_same_dev_ino(&saved_stat, &smb_fname->st)) {
2358 * The file did exist, but some other (local or NFS)
2359 * process either renamed/unlinked and re-created the
2360 * file with different dev/ino after we walked the path,
2361 * but before we did the open. We could retry the
2362 * open but it's a rare enough case it's easier to
2363 * just fail the open to prevent creating any problems
2364 * in the open file db having the wrong dev/ino key.
2367 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2368 "Old (dev=0x%llu, ino =0x%llu). "
2369 "New (dev=0x%llu, ino=0x%llu). Failing open "
2370 " with NT_STATUS_ACCESS_DENIED.\n",
2371 smb_fname_str_dbg(smb_fname),
2372 (unsigned long long)saved_stat.st_ex_dev,
2373 (unsigned long long)saved_stat.st_ex_ino,
2374 (unsigned long long)smb_fname->st.st_ex_dev,
2375 (unsigned long long)smb_fname->st.st_ex_ino));
2376 return NT_STATUS_ACCESS_DENIED;
2379 old_write_time = smb_fname->st.st_ex_mtime;
2382 * Deal with the race condition where two smbd's detect the
2383 * file doesn't exist and do the create at the same time. One
2384 * of them will win and set a share mode, the other (ie. this
2385 * one) should check if the requested share mode for this
2386 * create is allowed.
2390 * Now the file exists and fsp is successfully opened,
2391 * fsp->dev and fsp->inode are valid and should replace the
2392 * dev=0,inode=0 from a non existent file. Spotted by
2393 * Nadav Danieli <nadavd@exanet.com>. JRA.
2398 lck = get_share_mode_lock(talloc_tos(), id,
2400 smb_fname, &old_write_time);
2403 DEBUG(0, ("open_file_ntcreate: Could not get share "
2404 "mode lock for %s\n",
2405 smb_fname_str_dbg(smb_fname)));
2407 return NT_STATUS_SHARING_VIOLATION;
2410 /* Get the types we need to examine. */
2411 find_oplock_types(fsp,
2417 &got_a_none_oplock);
2419 /* First pass - send break only on batch oplocks. */
2420 if ((req != NULL) &&
2421 delay_for_batch_oplocks(fsp,
2425 schedule_defer_open(lck, request_time, req);
2428 return NT_STATUS_SHARING_VIOLATION;
2431 status = open_mode_check(conn, lck, fsp->name_hash,
2432 access_mask, share_access,
2433 create_options, &file_existed);
2435 if (NT_STATUS_IS_OK(status)) {
2436 /* We might be going to allow this open. Check oplock
2438 /* Second pass - send break for both batch or
2439 * exclusive oplocks. */
2440 if ((req != NULL) &&
2441 delay_for_exclusive_oplocks(
2446 schedule_defer_open(lck, request_time, req);
2449 return NT_STATUS_SHARING_VIOLATION;
2453 if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
2454 /* DELETE_PENDING is not deferred for a second */
2460 if (!NT_STATUS_IS_OK(status)) {
2461 uint32 can_access_mask;
2462 bool can_access = True;
2464 SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
2466 /* Check if this can be done with the deny_dos and fcb
2469 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
2470 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
2472 DEBUG(0, ("DOS open without an SMB "
2476 return NT_STATUS_INTERNAL_ERROR;
2479 /* Use the client requested access mask here,
2480 * not the one we open with. */
2481 status = fcb_or_dos_open(req,
2492 if (NT_STATUS_IS_OK(status)) {
2495 *pinfo = FILE_WAS_OPENED;
2497 return NT_STATUS_OK;
2502 * This next line is a subtlety we need for
2503 * MS-Access. If a file open will fail due to share
2504 * permissions and also for security (access) reasons,
2505 * we need to return the access failed error, not the
2506 * share error. We can't open the file due to kernel
2507 * oplock deadlock (it's possible we failed above on
2508 * the open_mode_check()) so use a userspace check.
2511 if (flags & O_RDWR) {
2512 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
2513 } else if (flags & O_WRONLY) {
2514 can_access_mask = FILE_WRITE_DATA;
2516 can_access_mask = FILE_READ_DATA;
2519 if (((can_access_mask & FILE_WRITE_DATA) &&
2520 !CAN_WRITE(conn)) ||
2521 !NT_STATUS_IS_OK(smbd_check_access_rights(conn,
2524 can_access_mask))) {
2529 * If we're returning a share violation, ensure we
2530 * cope with the braindead 1 second delay (SMB1 only).
2533 if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
2534 !conn->sconn->using_smb2 &&
2535 lp_defer_sharing_violations()) {
2536 struct timeval timeout;
2537 struct deferred_open_record state;
2540 /* this is a hack to speed up torture tests
2542 timeout_usecs = lp_parm_int(SNUM(conn),
2543 "smbd","sharedelay",
2544 SHARING_VIOLATION_USEC_WAIT);
2546 /* This is a relative time, added to the absolute
2547 request_time value to get the absolute timeout time.
2548 Note that if this is the second or greater time we enter
2549 this codepath for this particular request mid then
2550 request_time is left as the absolute time of the *first*
2551 time this request mid was processed. This is what allows
2552 the request to eventually time out. */
2554 timeout = timeval_set(0, timeout_usecs);
2556 /* Nothing actually uses state.delayed_for_oplocks
2557 but it's handy to differentiate in debug messages
2558 between a 30 second delay due to oplock break, and
2559 a 1 second delay for share mode conflicts. */
2561 state.delayed_for_oplocks = False;
2562 state.async_open = false;
2566 && !request_timed_out(request_time,
2568 defer_open(lck, request_time, timeout,
2577 * We have detected a sharing violation here
2578 * so return the correct error code
2580 status = NT_STATUS_SHARING_VIOLATION;
2582 status = NT_STATUS_ACCESS_DENIED;
2587 grant_fsp_oplock_type(fsp,
2593 * We have the share entry *locked*.....
2596 /* Delete streams if create_disposition requires it */
2597 if (!new_file_created && clear_ads(create_disposition) &&
2598 !is_ntfs_stream_smb_fname(smb_fname)) {
2599 status = delete_all_streams(conn, smb_fname->base_name);
2600 if (!NT_STATUS_IS_OK(status)) {
2607 /* note that we ignore failure for the following. It is
2608 basically a hack for NFS, and NFS will never set one of
2609 these only read them. Nobody but Samba can ever set a deny
2610 mode and we have already checked our more authoritative
2611 locking database for permission to set this deny mode. If
2612 the kernel refuses the operations then the kernel is wrong.
2613 note that GPFS supports it as well - jmcd */
2615 if (fsp->fh->fd != -1 && lp_kernel_share_modes(SNUM(conn))) {
2617 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
2618 if(ret_flock == -1 ){
2623 return NT_STATUS_SHARING_VIOLATION;
2628 * At this point onwards, we can guarantee that the share entry
2629 * is locked, whether we created the file or not, and that the
2630 * deny mode is compatible with all current opens.
2634 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2635 * but we don't have to store this - just ignore it on access check.
2637 if (conn->sconn->using_smb2) {
2639 * SMB2 doesn't return it (according to Microsoft tests).
2640 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2641 * File created with access = 0x7 (Read, Write, Delete)
2642 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2644 fsp->access_mask = access_mask;
2646 /* But SMB1 does. */
2647 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2651 /* stat opens on existing files don't get oplocks. */
2652 if (is_stat_open(open_access_mask)) {
2653 fsp->oplock_type = NO_OPLOCK;
2657 if (new_file_created) {
2658 info = FILE_WAS_CREATED;
2660 if (flags2 & O_TRUNC) {
2661 info = FILE_WAS_OVERWRITTEN;
2663 info = FILE_WAS_OPENED;
2672 * Setup the oplock info in both the shared memory and
2676 status = set_file_oplock(fsp, fsp->oplock_type);
2677 if (!NT_STATUS_IS_OK(status)) {
2679 * Could not get the kernel oplock
2681 fsp->oplock_type = NO_OPLOCK;
2684 set_share_mode(lck, fsp, get_current_uid(conn),
2688 /* Handle strange delete on close create semantics. */
2689 if (create_options & FILE_DELETE_ON_CLOSE) {
2691 status = can_set_delete_on_close(fsp, new_dos_attributes);
2693 if (!NT_STATUS_IS_OK(status)) {
2694 /* Remember to delete the mode we just added. */
2695 del_share_mode(lck, fsp);
2700 /* Note that here we set the *inital* delete on close flag,
2701 not the regular one. The magic gets handled in close. */
2702 fsp->initial_delete_on_close = True;
2705 if (info != FILE_WAS_OPENED) {
2706 /* Files should be initially set as archive */
2707 if (lp_map_archive(SNUM(conn)) ||
2708 lp_store_dos_attributes(SNUM(conn))) {
2710 if (file_set_dosmode(conn, smb_fname,
2711 new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
2712 parent_dir, true) == 0) {
2713 unx_mode = smb_fname->st.st_ex_mode;
2719 /* Determine sparse flag. */
2721 /* POSIX opens are sparse by default. */
2722 fsp->is_sparse = true;
2724 fsp->is_sparse = (file_existed &&
2725 (existing_dos_attributes & FILE_ATTRIBUTE_SPARSE));
2729 * Take care of inherited ACLs on created files - if default ACL not
2733 if (!posix_open && new_file_created && !def_acl) {
2735 int saved_errno = errno; /* We might get ENOSYS in the next
2738 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
2740 errno = saved_errno; /* Ignore ENOSYS */
2743 } else if (new_unx_mode) {
2747 /* Attributes need changing. File already existed. */
2750 int saved_errno = errno; /* We might get ENOSYS in the
2752 ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
2754 if (ret == -1 && errno == ENOSYS) {
2755 errno = saved_errno; /* Ignore ENOSYS */
2757 DEBUG(5, ("open_file_ntcreate: reset "
2758 "attributes of file %s to 0%o\n",
2759 smb_fname_str_dbg(smb_fname),
2760 (unsigned int)new_unx_mode));
2761 ret = 0; /* Don't do the fchmod below. */
2766 (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
2767 DEBUG(5, ("open_file_ntcreate: failed to reset "
2768 "attributes of file %s to 0%o\n",
2769 smb_fname_str_dbg(smb_fname),
2770 (unsigned int)new_unx_mode));
2775 return NT_STATUS_OK;
2779 /****************************************************************************
2780 Open a file for for write to ensure that we can fchmod it.
2781 ****************************************************************************/
2783 NTSTATUS open_file_fchmod(connection_struct *conn,
2784 struct smb_filename *smb_fname,
2785 files_struct **result)
2787 if (!VALID_STAT(smb_fname->st)) {
2788 return NT_STATUS_INVALID_PARAMETER;
2791 return SMB_VFS_CREATE_FILE(
2794 0, /* root_dir_fid */
2795 smb_fname, /* fname */
2796 FILE_WRITE_DATA, /* access_mask */
2797 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
2799 FILE_OPEN, /* create_disposition*/
2800 0, /* create_options */
2801 0, /* file_attributes */
2802 INTERNAL_OPEN_ONLY, /* oplock_request */
2803 0, /* allocation_size */
2804 0, /* private_flags */
2807 result, /* result */
2811 static NTSTATUS mkdir_internal(connection_struct *conn,
2812 struct smb_filename *smb_dname,
2813 uint32 file_attributes)
2816 char *parent_dir = NULL;
2818 bool posix_open = false;
2819 bool need_re_stat = false;
2820 uint32_t access_mask = SEC_DIR_ADD_SUBDIR;
2822 if (!CAN_WRITE(conn) || (access_mask & ~(conn->share_access))) {
2823 DEBUG(5,("mkdir_internal: failing share access "
2824 "%s\n", lp_servicename(talloc_tos(), SNUM(conn))));
2825 return NT_STATUS_ACCESS_DENIED;
2828 if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
2830 return NT_STATUS_NO_MEMORY;
2833 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
2835 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
2837 mode = unix_mode(conn, FILE_ATTRIBUTE_DIRECTORY, smb_dname, parent_dir);
2840 status = check_parent_access(conn,
2843 if(!NT_STATUS_IS_OK(status)) {
2844 DEBUG(5,("mkdir_internal: check_parent_access "
2845 "on directory %s for path %s returned %s\n",
2847 smb_dname->base_name,
2848 nt_errstr(status) ));
2852 if (SMB_VFS_MKDIR(conn, smb_dname->base_name, mode) != 0) {
2853 return map_nt_error_from_unix(errno);
2856 /* Ensure we're checking for a symlink here.... */
2857 /* We don't want to get caught by a symlink racer. */
2859 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2860 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2861 smb_fname_str_dbg(smb_dname), strerror(errno)));
2862 return map_nt_error_from_unix(errno);
2865 if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
2866 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2867 smb_fname_str_dbg(smb_dname)));
2868 return NT_STATUS_NOT_A_DIRECTORY;
2871 if (lp_store_dos_attributes(SNUM(conn))) {
2873 file_set_dosmode(conn, smb_dname,
2874 file_attributes | FILE_ATTRIBUTE_DIRECTORY,
2879 if (lp_inherit_perms(SNUM(conn))) {
2880 inherit_access_posix_acl(conn, parent_dir,
2881 smb_dname->base_name, mode);
2882 need_re_stat = true;
2887 * Check if high bits should have been set,
2888 * then (if bits are missing): add them.
2889 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2892 if ((mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) &&
2893 (mode & ~smb_dname->st.st_ex_mode)) {
2894 SMB_VFS_CHMOD(conn, smb_dname->base_name,
2895 (smb_dname->st.st_ex_mode |
2896 (mode & ~smb_dname->st.st_ex_mode)));
2897 need_re_stat = true;
2901 /* Change the owner if required. */
2902 if (lp_inherit_owner(SNUM(conn))) {
2903 change_dir_owner_to_parent(conn, parent_dir,
2904 smb_dname->base_name,
2906 need_re_stat = true;
2910 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2911 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2912 smb_fname_str_dbg(smb_dname), strerror(errno)));
2913 return map_nt_error_from_unix(errno);
2917 notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
2918 smb_dname->base_name);
2920 return NT_STATUS_OK;
2923 /****************************************************************************
2924 Open a directory from an NT SMB call.
2925 ****************************************************************************/
2927 static NTSTATUS open_directory(connection_struct *conn,
2928 struct smb_request *req,
2929 struct smb_filename *smb_dname,
2931 uint32 share_access,
2932 uint32 create_disposition,
2933 uint32 create_options,
2934 uint32 file_attributes,
2936 files_struct **result)
2938 files_struct *fsp = NULL;
2939 bool dir_existed = VALID_STAT(smb_dname->st) ? True : False;
2940 struct share_mode_lock *lck = NULL;
2942 struct timespec mtimespec;
2945 if (is_ntfs_stream_smb_fname(smb_dname)) {
2946 DEBUG(2, ("open_directory: %s is a stream name!\n",
2947 smb_fname_str_dbg(smb_dname)));
2948 return NT_STATUS_NOT_A_DIRECTORY;
2951 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) {
2952 /* Ensure we have a directory attribute. */
2953 file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
2956 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2957 "share_access = 0x%x create_options = 0x%x, "
2958 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2959 smb_fname_str_dbg(smb_dname),
2960 (unsigned int)access_mask,
2961 (unsigned int)share_access,
2962 (unsigned int)create_options,
2963 (unsigned int)create_disposition,
2964 (unsigned int)file_attributes));
2966 status = smbd_calculate_access_mask(conn, smb_dname, false,
2967 access_mask, &access_mask);
2968 if (!NT_STATUS_IS_OK(status)) {
2969 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2970 "on file %s returned %s\n",
2971 smb_fname_str_dbg(smb_dname),
2972 nt_errstr(status)));
2976 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
2977 !security_token_has_privilege(get_current_nttok(conn),
2978 SEC_PRIV_SECURITY)) {
2979 DEBUG(10, ("open_directory: open on %s "
2980 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2981 smb_fname_str_dbg(smb_dname)));
2982 return NT_STATUS_PRIVILEGE_NOT_HELD;
2985 switch( create_disposition ) {
2989 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2992 info = FILE_WAS_OPENED;
2997 /* If directory exists error. If directory doesn't
3001 status = NT_STATUS_OBJECT_NAME_COLLISION;
3002 DEBUG(2, ("open_directory: unable to create "
3003 "%s. Error was %s\n",
3004 smb_fname_str_dbg(smb_dname),
3005 nt_errstr(status)));
3009 status = mkdir_internal(conn, smb_dname,
3012 if (!NT_STATUS_IS_OK(status)) {
3013 DEBUG(2, ("open_directory: unable to create "
3014 "%s. Error was %s\n",
3015 smb_fname_str_dbg(smb_dname),
3016 nt_errstr(status)));
3020 info = FILE_WAS_CREATED;
3025 * If directory exists open. If directory doesn't
3030 status = NT_STATUS_OK;
3031 info = FILE_WAS_OPENED;
3033 status = mkdir_internal(conn, smb_dname,
3036 if (NT_STATUS_IS_OK(status)) {
3037 info = FILE_WAS_CREATED;
3039 /* Cope with create race. */
3040 if (!NT_STATUS_EQUAL(status,
3041 NT_STATUS_OBJECT_NAME_COLLISION)) {
3042 DEBUG(2, ("open_directory: unable to create "
3043 "%s. Error was %s\n",
3044 smb_fname_str_dbg(smb_dname),
3045 nt_errstr(status)));
3048 info = FILE_WAS_OPENED;
3054 case FILE_SUPERSEDE:
3055 case FILE_OVERWRITE:
3056 case FILE_OVERWRITE_IF:
3058 DEBUG(5,("open_directory: invalid create_disposition "
3059 "0x%x for directory %s\n",
3060 (unsigned int)create_disposition,
3061 smb_fname_str_dbg(smb_dname)));
3062 return NT_STATUS_INVALID_PARAMETER;
3065 if(!S_ISDIR(smb_dname->st.st_ex_mode)) {
3066 DEBUG(5,("open_directory: %s is not a directory !\n",
3067 smb_fname_str_dbg(smb_dname)));
3068 return NT_STATUS_NOT_A_DIRECTORY;
3071 if (info == FILE_WAS_OPENED) {
3072 status = smbd_check_access_rights(conn,
3076 if (!NT_STATUS_IS_OK(status)) {
3077 DEBUG(10, ("open_directory: smbd_check_access_rights on "
3078 "file %s failed with %s\n",
3079 smb_fname_str_dbg(smb_dname),
3080 nt_errstr(status)));
3085 status = file_new(req, conn, &fsp);
3086 if(!NT_STATUS_IS_OK(status)) {
3091 * Setup the files_struct for it.
3094 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
3095 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
3096 fsp->file_pid = req ? req->smbpid : 0;
3097 fsp->can_lock = False;
3098 fsp->can_read = False;
3099 fsp->can_write = False;
3101 fsp->share_access = share_access;
3102 fsp->fh->private_options = 0;
3104 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3106 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
3107 fsp->print_file = NULL;
3108 fsp->modified = False;
3109 fsp->oplock_type = NO_OPLOCK;
3110 fsp->sent_oplock_break = NO_BREAK_SENT;
3111 fsp->is_directory = True;
3112 fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
3113 status = fsp_set_smb_fname(fsp, smb_dname);
3114 if (!NT_STATUS_IS_OK(status)) {
3115 file_free(req, fsp);
3119 mtimespec = smb_dname->st.st_ex_mtime;
3122 status = fd_open(conn, fsp, O_RDONLY|O_DIRECTORY, 0);
3124 /* POSIX allows us to open a directory with O_RDONLY. */
3125 status = fd_open(conn, fsp, O_RDONLY, 0);
3127 if (!NT_STATUS_IS_OK(status)) {
3128 DEBUG(5, ("open_directory: Could not open fd for "
3130 smb_fname_str_dbg(smb_dname),
3131 nt_errstr(status)));
3132 file_free(req, fsp);
3136 status = vfs_stat_fsp(fsp);
3137 if (!NT_STATUS_IS_OK(status)) {
3139 file_free(req, fsp);
3143 /* Ensure there was no race condition. */
3144 if (!check_same_stat(&smb_dname->st, &fsp->fsp_name->st)) {
3145 DEBUG(5,("open_directory: stat struct differs for "
3147 smb_fname_str_dbg(smb_dname)));
3149 file_free(req, fsp);
3150 return NT_STATUS_ACCESS_DENIED;
3153 lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
3154 conn->connectpath, smb_dname,
3158 DEBUG(0, ("open_directory: Could not get share mode lock for "
3159 "%s\n", smb_fname_str_dbg(smb_dname)));
3161 file_free(req, fsp);
3162 return NT_STATUS_SHARING_VIOLATION;
3165 status = open_mode_check(conn, lck, fsp->name_hash,
3166 access_mask, share_access,
3167 create_options, &dir_existed);
3169 if (!NT_STATUS_IS_OK(status)) {
3172 file_free(req, fsp);
3176 set_share_mode(lck, fsp, get_current_uid(conn),
3177 req ? req->mid : 0, NO_OPLOCK);
3179 /* For directories the delete on close bit at open time seems
3180 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3181 if (create_options & FILE_DELETE_ON_CLOSE) {
3182 status = can_set_delete_on_close(fsp, 0);
3183 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
3186 file_free(req, fsp);
3190 if (NT_STATUS_IS_OK(status)) {
3191 /* Note that here we set the *inital* delete on close flag,
3192 not the regular one. The magic gets handled in close. */
3193 fsp->initial_delete_on_close = True;
3204 return NT_STATUS_OK;
3207 NTSTATUS create_directory(connection_struct *conn, struct smb_request *req,
3208 struct smb_filename *smb_dname)
3213 status = SMB_VFS_CREATE_FILE(
3216 0, /* root_dir_fid */
3217 smb_dname, /* fname */
3218 FILE_READ_ATTRIBUTES, /* access_mask */
3219 FILE_SHARE_NONE, /* share_access */
3220 FILE_CREATE, /* create_disposition*/
3221 FILE_DIRECTORY_FILE, /* create_options */
3222 FILE_ATTRIBUTE_DIRECTORY, /* file_attributes */
3223 0, /* oplock_request */
3224 0, /* allocation_size */
3225 0, /* private_flags */
3231 if (NT_STATUS_IS_OK(status)) {
3232 close_file(req, fsp, NORMAL_CLOSE);
3238 /****************************************************************************
3239 Receive notification that one of our open files has been renamed by another
3241 ****************************************************************************/
3243 void msg_file_was_renamed(struct messaging_context *msg,
3246 struct server_id server_id,
3250 char *frm = (char *)data->data;
3252 const char *sharepath;
3253 const char *base_name;
3254 const char *stream_name;
3255 struct smb_filename *smb_fname = NULL;
3256 size_t sp_len, bn_len;
3258 struct smbd_server_connection *sconn =
3259 talloc_get_type_abort(private_data,
3260 struct smbd_server_connection);
3262 if (data->data == NULL
3263 || data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
3264 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3265 (int)data->length));
3269 /* Unpack the message. */
3270 pull_file_id_24(frm, &id);
3271 sharepath = &frm[24];
3272 sp_len = strlen(sharepath);
3273 base_name = sharepath + sp_len + 1;
3274 bn_len = strlen(base_name);
3275 stream_name = sharepath + sp_len + 1 + bn_len + 1;
3277 /* stream_name must always be NULL if there is no stream. */
3278 if (stream_name[0] == '\0') {
3282 smb_fname = synthetic_smb_fname(talloc_tos(), base_name,
3284 if (smb_fname == NULL) {
3288 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3290 sharepath, smb_fname_str_dbg(smb_fname),
3291 file_id_string_tos(&id)));
3293 for(fsp = file_find_di_first(sconn, id); fsp;
3294 fsp = file_find_di_next(fsp)) {
3295 if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
3297 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3298 fsp_fnum_dbg(fsp), fsp_str_dbg(fsp),
3299 smb_fname_str_dbg(smb_fname)));
3300 status = fsp_set_smb_fname(fsp, smb_fname);
3301 if (!NT_STATUS_IS_OK(status)) {
3306 /* Now we have the complete path we can work out if this is
3307 actually within this share and adjust newname accordingly. */
3308 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3309 "not sharepath %s) "
3310 "%s from %s -> %s\n",
3311 fsp->conn->connectpath,
3315 smb_fname_str_dbg(smb_fname)));
3319 TALLOC_FREE(smb_fname);
3324 * If a main file is opened for delete, all streams need to be checked for
3325 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3326 * If that works, delete them all by setting the delete on close and close.
3329 NTSTATUS open_streams_for_delete(connection_struct *conn,
3332 struct stream_struct *stream_info = NULL;
3333 files_struct **streams = NULL;
3335 unsigned int num_streams = 0;
3336 TALLOC_CTX *frame = talloc_stackframe();
3339 status = vfs_streaminfo(conn, NULL, fname, talloc_tos(),
3340 &num_streams, &stream_info);
3342 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
3343 || NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
3344 DEBUG(10, ("no streams around\n"));
3346 return NT_STATUS_OK;
3349 if (!NT_STATUS_IS_OK(status)) {
3350 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3351 nt_errstr(status)));
3355 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3358 if (num_streams == 0) {
3360 return NT_STATUS_OK;
3363 streams = talloc_array(talloc_tos(), files_struct *, num_streams);
3364 if (streams == NULL) {
3365 DEBUG(0, ("talloc failed\n"));
3366 status = NT_STATUS_NO_MEMORY;
3370 for (i=0; i<num_streams; i++) {
3371 struct smb_filename *smb_fname;
3373 if (strequal(stream_info[i].name, "::$DATA")) {
3378 smb_fname = synthetic_smb_fname(
3379 talloc_tos(), fname, stream_info[i].name, NULL);
3380 if (smb_fname == NULL) {
3381 status = NT_STATUS_NO_MEMORY;
3385 if (SMB_VFS_STAT(conn, smb_fname) == -1) {
3386 DEBUG(10, ("Unable to stat stream: %s\n",
3387 smb_fname_str_dbg(smb_fname)));
3390 status = SMB_VFS_CREATE_FILE(
3393 0, /* root_dir_fid */
3394 smb_fname, /* fname */
3395 DELETE_ACCESS, /* access_mask */
3396 (FILE_SHARE_READ | /* share_access */
3397 FILE_SHARE_WRITE | FILE_SHARE_DELETE),
3398 FILE_OPEN, /* create_disposition*/
3399 0, /* create_options */
3400 FILE_ATTRIBUTE_NORMAL, /* file_attributes */
3401 0, /* oplock_request */
3402 0, /* allocation_size */
3403 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* private_flags */
3406 &streams[i], /* result */
3409 if (!NT_STATUS_IS_OK(status)) {
3410 DEBUG(10, ("Could not open stream %s: %s\n",
3411 smb_fname_str_dbg(smb_fname),
3412 nt_errstr(status)));
3414 TALLOC_FREE(smb_fname);
3417 TALLOC_FREE(smb_fname);
3421 * don't touch the variable "status" beyond this point :-)
3424 for (i -= 1 ; i >= 0; i--) {
3425 if (streams[i] == NULL) {
3429 DEBUG(10, ("Closing stream # %d, %s\n", i,
3430 fsp_str_dbg(streams[i])));
3431 close_file(NULL, streams[i], NORMAL_CLOSE);
3439 /*********************************************************************
3440 Create a default ACL by inheriting from the parent. If no inheritance
3441 from the parent available, don't set anything. This will leave the actual
3442 permissions the new file or directory already got from the filesystem
3443 as the NT ACL when read.
3444 *********************************************************************/
3446 static NTSTATUS inherit_new_acl(files_struct *fsp)
3448 TALLOC_CTX *frame = talloc_stackframe();
3449 char *parent_name = NULL;
3450 struct security_descriptor *parent_desc = NULL;
3451 NTSTATUS status = NT_STATUS_OK;
3452 struct security_descriptor *psd = NULL;
3453 const struct dom_sid *owner_sid = NULL;
3454 const struct dom_sid *group_sid = NULL;
3455 uint32_t security_info_sent = (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL);
3456 struct security_token *token = fsp->conn->session_info->security_token;
3457 bool inherit_owner = lp_inherit_owner(SNUM(fsp->conn));
3458 bool inheritable_components = false;
3459 bool try_builtin_administrators = false;
3460 const struct dom_sid *BA_U_sid = NULL;
3461 const struct dom_sid *BA_G_sid = NULL;
3462 bool try_system = false;
3463 const struct dom_sid *SY_U_sid = NULL;
3464 const struct dom_sid *SY_G_sid = NULL;
3467 if (!parent_dirname(frame, fsp->fsp_name->base_name, &parent_name, NULL)) {
3469 return NT_STATUS_NO_MEMORY;
3472 status = SMB_VFS_GET_NT_ACL(fsp->conn,
3474 (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL),
3477 if (!NT_STATUS_IS_OK(status)) {
3482 inheritable_components = sd_has_inheritable_components(parent_desc,
3485 if (!inheritable_components && !inherit_owner) {
3487 /* Nothing to inherit and not setting owner. */
3488 return NT_STATUS_OK;
3491 /* Create an inherited descriptor from the parent. */
3493 if (DEBUGLEVEL >= 10) {
3494 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3495 fsp_str_dbg(fsp) ));
3496 NDR_PRINT_DEBUG(security_descriptor, parent_desc);
3499 /* Inherit from parent descriptor if "inherit owner" set. */
3500 if (inherit_owner) {
3501 owner_sid = parent_desc->owner_sid;
3502 group_sid = parent_desc->group_sid;
3505 if (owner_sid == NULL) {
3506 if (security_token_has_builtin_administrators(token)) {
3507 try_builtin_administrators = true;
3508 } else if (security_token_is_system(token)) {
3509 try_builtin_administrators = true;
3514 if (group_sid == NULL &&
3515 token->num_sids == PRIMARY_GROUP_SID_INDEX)
3517 if (security_token_is_system(token)) {
3518 try_builtin_administrators = true;
3523 if (try_builtin_administrators) {
3528 ok = sids_to_unixids(&global_sid_Builtin_Administrators, 1, &ids);
3532 BA_U_sid = &global_sid_Builtin_Administrators;
3533 BA_G_sid = &global_sid_Builtin_Administrators;
3536 BA_U_sid = &global_sid_Builtin_Administrators;
3539 BA_G_sid = &global_sid_Builtin_Administrators;
3552 ok = sids_to_unixids(&global_sid_System, 1, &ids);
3556 SY_U_sid = &global_sid_System;
3557 SY_G_sid = &global_sid_System;
3560 SY_U_sid = &global_sid_System;
3563 SY_G_sid = &global_sid_System;
3571 if (owner_sid == NULL) {
3572 owner_sid = BA_U_sid;
3575 if (owner_sid == NULL) {
3576 owner_sid = SY_U_sid;
3579 if (group_sid == NULL) {
3580 group_sid = SY_G_sid;
3583 if (try_system && group_sid == NULL) {
3584 group_sid = BA_G_sid;
3587 if (owner_sid == NULL) {
3588 owner_sid = &token->sids[PRIMARY_USER_SID_INDEX];
3590 if (group_sid == NULL) {
3591 if (token->num_sids == PRIMARY_GROUP_SID_INDEX) {
3592 group_sid = &token->sids[PRIMARY_USER_SID_INDEX];
3594 group_sid = &token->sids[PRIMARY_GROUP_SID_INDEX];
3598 status = se_create_child_secdesc(frame,
3605 if (!NT_STATUS_IS_OK(status)) {
3610 /* If inheritable_components == false,
3611 se_create_child_secdesc()
3612 creates a security desriptor with a NULL dacl
3613 entry, but with SEC_DESC_DACL_PRESENT. We need
3614 to remove that flag. */
3616 if (!inheritable_components) {
3617 security_info_sent &= ~SECINFO_DACL;
3618 psd->type &= ~SEC_DESC_DACL_PRESENT;
3621 if (DEBUGLEVEL >= 10) {
3622 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3623 fsp_str_dbg(fsp) ));
3624 NDR_PRINT_DEBUG(security_descriptor, psd);
3627 if (inherit_owner) {
3628 /* We need to be root to force this. */
3631 status = SMB_VFS_FSET_NT_ACL(fsp,
3634 if (inherit_owner) {
3642 * Wrapper around open_file_ntcreate and open_directory
3645 static NTSTATUS create_file_unixpath(connection_struct *conn,
3646 struct smb_request *req,
3647 struct smb_filename *smb_fname,
3648 uint32_t access_mask,
3649 uint32_t share_access,
3650 uint32_t create_disposition,
3651 uint32_t create_options,
3652 uint32_t file_attributes,
3653 uint32_t oplock_request,
3654 uint64_t allocation_size,
3655 uint32_t private_flags,
3656 struct security_descriptor *sd,
3657 struct ea_list *ea_list,
3659 files_struct **result,
3662 int info = FILE_WAS_OPENED;
3663 files_struct *base_fsp = NULL;
3664 files_struct *fsp = NULL;
3667 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3668 "file_attributes = 0x%x, share_access = 0x%x, "
3669 "create_disposition = 0x%x create_options = 0x%x "
3670 "oplock_request = 0x%x private_flags = 0x%x "
3671 "ea_list = 0x%p, sd = 0x%p, "
3673 (unsigned int)access_mask,
3674 (unsigned int)file_attributes,
3675 (unsigned int)share_access,
3676 (unsigned int)create_disposition,
3677 (unsigned int)create_options,
3678 (unsigned int)oplock_request,
3679 (unsigned int)private_flags,
3680 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3682 if (create_options & FILE_OPEN_BY_FILE_ID) {
3683 status = NT_STATUS_NOT_SUPPORTED;
3687 if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
3688 status = NT_STATUS_INVALID_PARAMETER;
3693 oplock_request |= INTERNAL_OPEN_ONLY;
3696 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3697 && (access_mask & DELETE_ACCESS)
3698 && !is_ntfs_stream_smb_fname(smb_fname)) {
3700 * We can't open a file with DELETE access if any of the
3701 * streams is open without FILE_SHARE_DELETE
3703 status = open_streams_for_delete(conn, smb_fname->base_name);
3705 if (!NT_STATUS_IS_OK(status)) {
3710 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
3711 !security_token_has_privilege(get_current_nttok(conn),
3712 SEC_PRIV_SECURITY)) {
3713 DEBUG(10, ("create_file_unixpath: open on %s "
3714 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3715 smb_fname_str_dbg(smb_fname)));
3716 status = NT_STATUS_PRIVILEGE_NOT_HELD;
3720 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3721 && is_ntfs_stream_smb_fname(smb_fname)
3722 && (!(private_flags & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
3723 uint32 base_create_disposition;
3724 struct smb_filename *smb_fname_base = NULL;
3726 if (create_options & FILE_DIRECTORY_FILE) {
3727 status = NT_STATUS_NOT_A_DIRECTORY;
3731 switch (create_disposition) {
3733 base_create_disposition = FILE_OPEN;
3736 base_create_disposition = FILE_OPEN_IF;
3740 /* Create an smb_filename with stream_name == NULL. */
3741 smb_fname_base = synthetic_smb_fname(talloc_tos(),
3742 smb_fname->base_name,
3744 if (smb_fname_base == NULL) {
3745 status = NT_STATUS_NO_MEMORY;
3749 if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
3750 DEBUG(10, ("Unable to stat stream: %s\n",
3751 smb_fname_str_dbg(smb_fname_base)));
3754 /* Open the base file. */
3755 status = create_file_unixpath(conn, NULL, smb_fname_base, 0,
3758 | FILE_SHARE_DELETE,
3759 base_create_disposition,
3760 0, 0, 0, 0, 0, NULL, NULL,
3762 TALLOC_FREE(smb_fname_base);
3764 if (!NT_STATUS_IS_OK(status)) {
3765 DEBUG(10, ("create_file_unixpath for base %s failed: "
3766 "%s\n", smb_fname->base_name,
3767 nt_errstr(status)));
3770 /* we don't need to low level fd */
3775 * If it's a request for a directory open, deal with it separately.
3778 if (create_options & FILE_DIRECTORY_FILE) {
3780 if (create_options & FILE_NON_DIRECTORY_FILE) {
3781 status = NT_STATUS_INVALID_PARAMETER;
3785 /* Can't open a temp directory. IFS kit test. */
3786 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
3787 (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
3788 status = NT_STATUS_INVALID_PARAMETER;
3793 * We will get a create directory here if the Win32
3794 * app specified a security descriptor in the
3795 * CreateDirectory() call.
3799 status = open_directory(
3800 conn, req, smb_fname, access_mask, share_access,
3801 create_disposition, create_options, file_attributes,
3806 * Ordinary file case.
3809 status = file_new(req, conn, &fsp);
3810 if(!NT_STATUS_IS_OK(status)) {
3814 status = fsp_set_smb_fname(fsp, smb_fname);
3815 if (!NT_STATUS_IS_OK(status)) {
3821 * We're opening the stream element of a
3822 * base_fsp we already opened. Set up the
3825 fsp->base_fsp = base_fsp;
3828 if (allocation_size) {
3829 fsp->initial_allocation_size = smb_roundup(fsp->conn,
3833 status = open_file_ntcreate(conn,
3845 if(!NT_STATUS_IS_OK(status)) {
3846 file_free(req, fsp);
3850 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
3852 /* A stream open never opens a directory */
3855 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3860 * Fail the open if it was explicitly a non-directory
3864 if (create_options & FILE_NON_DIRECTORY_FILE) {
3865 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3870 status = open_directory(
3871 conn, req, smb_fname, access_mask,
3872 share_access, create_disposition,
3873 create_options, file_attributes,
3878 if (!NT_STATUS_IS_OK(status)) {
3882 fsp->base_fsp = base_fsp;
3884 if ((ea_list != NULL) &&
3885 ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN))) {
3886 status = set_ea(conn, fsp, fsp->fsp_name, ea_list);
3887 if (!NT_STATUS_IS_OK(status)) {
3892 if (!fsp->is_directory && S_ISDIR(fsp->fsp_name->st.st_ex_mode)) {
3893 status = NT_STATUS_ACCESS_DENIED;
3897 /* Save the requested allocation size. */
3898 if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
3900 && (allocation_size > fsp->fsp_name->st.st_ex_size)) {
3901 fsp->initial_allocation_size = smb_roundup(
3902 fsp->conn, allocation_size);
3903 if (fsp->is_directory) {
3904 /* Can't set allocation size on a directory. */
3905 status = NT_STATUS_ACCESS_DENIED;
3908 if (vfs_allocate_file_space(
3909 fsp, fsp->initial_allocation_size) == -1) {
3910 status = NT_STATUS_DISK_FULL;
3914 fsp->initial_allocation_size = smb_roundup(
3915 fsp->conn, (uint64_t)fsp->fsp_name->st.st_ex_size);
3918 fsp->initial_allocation_size = 0;
3921 if ((info == FILE_WAS_CREATED) && lp_nt_acl_support(SNUM(conn)) &&
3922 fsp->base_fsp == NULL) {
3925 * According to the MS documentation, the only time the security
3926 * descriptor is applied to the opened file is iff we *created* the
3927 * file; an existing file stays the same.
3929 * Also, it seems (from observation) that you can open the file with
3930 * any access mask but you can still write the sd. We need to override
3931 * the granted access before we call set_sd
3932 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3935 uint32_t sec_info_sent;
3936 uint32_t saved_access_mask = fsp->access_mask;
3938 sec_info_sent = get_sec_info(sd);
3940 fsp->access_mask = FILE_GENERIC_ALL;
3942 if (sec_info_sent & (SECINFO_OWNER|
3946 status = set_sd(fsp, sd, sec_info_sent);
3949 fsp->access_mask = saved_access_mask;
3951 if (!NT_STATUS_IS_OK(status)) {
3954 } else if (lp_inherit_acls(SNUM(conn))) {
3955 /* Inherit from parent. Errors here are not fatal. */
3956 status = inherit_new_acl(fsp);
3957 if (!NT_STATUS_IS_OK(status)) {
3958 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3960 nt_errstr(status) ));
3965 DEBUG(10, ("create_file_unixpath: info=%d\n", info));
3968 if (pinfo != NULL) {
3972 smb_fname->st = fsp->fsp_name->st;
3974 return NT_STATUS_OK;
3977 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
3980 if (base_fsp && fsp->base_fsp == base_fsp) {
3982 * The close_file below will close
3987 close_file(req, fsp, ERROR_CLOSE);
3990 if (base_fsp != NULL) {
3991 close_file(req, base_fsp, ERROR_CLOSE);
3998 * Calculate the full path name given a relative fid.
4000 NTSTATUS get_relative_fid_filename(connection_struct *conn,
4001 struct smb_request *req,
4002 uint16_t root_dir_fid,
4003 const struct smb_filename *smb_fname,
4004 struct smb_filename **smb_fname_out)
4006 files_struct *dir_fsp;
4007 char *parent_fname = NULL;
4008 char *new_base_name = NULL;
4011 if (root_dir_fid == 0 || !smb_fname) {
4012 status = NT_STATUS_INTERNAL_ERROR;
4016 dir_fsp = file_fsp(req, root_dir_fid);
4018 if (dir_fsp == NULL) {
4019 status = NT_STATUS_INVALID_HANDLE;
4023 if (is_ntfs_stream_smb_fname(dir_fsp->fsp_name)) {
4024 status = NT_STATUS_INVALID_HANDLE;
4028 if (!dir_fsp->is_directory) {
4031 * Check to see if this is a mac fork of some kind.
4034 if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
4035 is_ntfs_stream_smb_fname(smb_fname)) {
4036 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
4041 we need to handle the case when we get a
4042 relative open relative to a file and the
4043 pathname is blank - this is a reopen!
4044 (hint from demyn plantenberg)
4047 status = NT_STATUS_INVALID_HANDLE;
4051 if (ISDOT(dir_fsp->fsp_name->base_name)) {
4053 * We're at the toplevel dir, the final file name
4054 * must not contain ./, as this is filtered out
4055 * normally by srvstr_get_path and unix_convert
4056 * explicitly rejects paths containing ./.
4058 parent_fname = talloc_strdup(talloc_tos(), "");
4059 if (parent_fname == NULL) {
4060 status = NT_STATUS_NO_MEMORY;
4064 size_t dir_name_len = strlen(dir_fsp->fsp_name->base_name);
4067 * Copy in the base directory name.
4070 parent_fname = talloc_array(talloc_tos(), char,
4072 if (parent_fname == NULL) {
4073 status = NT_STATUS_NO_MEMORY;
4076 memcpy(parent_fname, dir_fsp->fsp_name->base_name,
4080 * Ensure it ends in a '/'.
4081 * We used TALLOC_SIZE +2 to add space for the '/'.
4085 && (parent_fname[dir_name_len-1] != '\\')
4086 && (parent_fname[dir_name_len-1] != '/')) {
4087 parent_fname[dir_name_len] = '/';
4088 parent_fname[dir_name_len+1] = '\0';
4092 new_base_name = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
4093 smb_fname->base_name);
4094 if (new_base_name == NULL) {
4095 status = NT_STATUS_NO_MEMORY;
4099 status = filename_convert(req,
4101 req->flags2 & FLAGS2_DFS_PATHNAMES,
4106 if (!NT_STATUS_IS_OK(status)) {
4111 TALLOC_FREE(parent_fname);
4112 TALLOC_FREE(new_base_name);
4116 NTSTATUS create_file_default(connection_struct *conn,
4117 struct smb_request *req,
4118 uint16_t root_dir_fid,
4119 struct smb_filename *smb_fname,
4120 uint32_t access_mask,
4121 uint32_t share_access,
4122 uint32_t create_disposition,
4123 uint32_t create_options,
4124 uint32_t file_attributes,
4125 uint32_t oplock_request,
4126 uint64_t allocation_size,
4127 uint32_t private_flags,
4128 struct security_descriptor *sd,
4129 struct ea_list *ea_list,
4130 files_struct **result,
4133 int info = FILE_WAS_OPENED;
4134 files_struct *fsp = NULL;
4136 bool stream_name = false;
4138 DEBUG(10,("create_file: access_mask = 0x%x "
4139 "file_attributes = 0x%x, share_access = 0x%x, "
4140 "create_disposition = 0x%x create_options = 0x%x "
4141 "oplock_request = 0x%x "
4142 "private_flags = 0x%x "
4143 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
4145 (unsigned int)access_mask,
4146 (unsigned int)file_attributes,
4147 (unsigned int)share_access,
4148 (unsigned int)create_disposition,
4149 (unsigned int)create_options,
4150 (unsigned int)oplock_request,
4151 (unsigned int)private_flags,
4152 (unsigned int)root_dir_fid,
4153 ea_list, sd, smb_fname_str_dbg(smb_fname)));
4156 * Calculate the filename from the root_dir_if if necessary.
4159 if (root_dir_fid != 0) {
4160 struct smb_filename *smb_fname_out = NULL;
4161 status = get_relative_fid_filename(conn, req, root_dir_fid,
4162 smb_fname, &smb_fname_out);
4163 if (!NT_STATUS_IS_OK(status)) {
4166 smb_fname = smb_fname_out;
4170 * Check to see if this is a mac fork of some kind.
4173 stream_name = is_ntfs_stream_smb_fname(smb_fname);
4175 enum FAKE_FILE_TYPE fake_file_type;
4177 fake_file_type = is_fake_file(smb_fname);
4179 if (fake_file_type != FAKE_FILE_TYPE_NONE) {
4182 * Here we go! support for changing the disk quotas
4185 * We need to fake up to open this MAGIC QUOTA file
4186 * and return a valid FID.
4188 * w2k close this file directly after openening xp
4189 * also tries a QUERY_FILE_INFO on the file and then
4192 status = open_fake_file(req, conn, req->vuid,
4193 fake_file_type, smb_fname,
4195 if (!NT_STATUS_IS_OK(status)) {
4199 ZERO_STRUCT(smb_fname->st);
4203 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
4204 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
4209 if (is_ntfs_default_stream_smb_fname(smb_fname)) {
4211 smb_fname->stream_name = NULL;
4212 /* We have to handle this error here. */
4213 if (create_options & FILE_DIRECTORY_FILE) {
4214 status = NT_STATUS_NOT_A_DIRECTORY;
4217 if (lp_posix_pathnames()) {
4218 ret = SMB_VFS_LSTAT(conn, smb_fname);
4220 ret = SMB_VFS_STAT(conn, smb_fname);
4223 if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
4224 status = NT_STATUS_FILE_IS_A_DIRECTORY;
4229 status = create_file_unixpath(
4230 conn, req, smb_fname, access_mask, share_access,
4231 create_disposition, create_options, file_attributes,
4232 oplock_request, allocation_size, private_flags,
4236 if (!NT_STATUS_IS_OK(status)) {
4241 DEBUG(10, ("create_file: info=%d\n", info));
4244 if (pinfo != NULL) {
4247 return NT_STATUS_OK;
4250 DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
4253 close_file(req, fsp, ERROR_CLOSE);