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 (((uint16)fsp->oplock_type) != share_entry->op_type) {
1064 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1065 share_mode_str(talloc_tos(), num, share_entry) ));
1066 str = talloc_asprintf(talloc_tos(),
1067 "validate_my_share_entries: "
1068 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
1069 fsp->fsp_name->base_name,
1070 (unsigned int)fsp->oplock_type,
1071 (unsigned int)share_entry->op_type );
1077 bool is_stat_open(uint32 access_mask)
1079 const uint32_t stat_open_bits =
1080 (SYNCHRONIZE_ACCESS|
1081 FILE_READ_ATTRIBUTES|
1082 FILE_WRITE_ATTRIBUTES);
1084 return (((access_mask & stat_open_bits) != 0) &&
1085 ((access_mask & ~stat_open_bits) == 0));
1088 static bool has_delete_on_close(struct share_mode_lock *lck,
1091 struct share_mode_data *d = lck->data;
1094 if (d->num_share_modes == 0) {
1097 if (!is_delete_on_close_set(lck, name_hash)) {
1100 for (i=0; i<d->num_share_modes; i++) {
1101 if (!share_mode_stale_pid(d, i)) {
1108 /****************************************************************************
1109 Deal with share modes
1110 Invarient: Share mode must be locked on entry and exit.
1111 Returns -1 on error, or number of share modes on success (may be zero).
1112 ****************************************************************************/
1114 static NTSTATUS open_mode_check(connection_struct *conn,
1115 struct share_mode_lock *lck,
1117 uint32 share_access,
1122 if(lck->data->num_share_modes == 0) {
1123 return NT_STATUS_OK;
1126 if (is_stat_open(access_mask)) {
1127 /* Stat open that doesn't trigger oplock breaks or share mode
1128 * checks... ! JRA. */
1129 return NT_STATUS_OK;
1133 * Check if the share modes will give us access.
1136 #if defined(DEVELOPER)
1137 for(i = 0; i < lck->data->num_share_modes; i++) {
1138 validate_my_share_entries(conn->sconn, i,
1139 &lck->data->share_modes[i]);
1143 /* Now we check the share modes, after any oplock breaks. */
1144 for(i = 0; i < lck->data->num_share_modes; i++) {
1146 if (!is_valid_share_mode_entry(&lck->data->share_modes[i])) {
1150 /* someone else has a share lock on it, check to see if we can
1152 if (share_conflict(&lck->data->share_modes[i],
1153 access_mask, share_access)) {
1155 if (share_mode_stale_pid(lck->data, i)) {
1159 *file_existed = true;
1161 return NT_STATUS_SHARING_VIOLATION;
1165 if (lck->data->num_share_modes != 0) {
1166 *file_existed = true;
1169 return NT_STATUS_OK;
1173 * Send a break message to the oplock holder and delay the open for
1177 static NTSTATUS send_break_message(files_struct *fsp,
1178 struct share_mode_entry *exclusive,
1183 char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
1185 DEBUG(10, ("Sending break request to PID %s\n",
1186 procid_str_static(&exclusive->pid)));
1187 exclusive->op_mid = mid;
1189 /* Create the message. */
1190 share_mode_entry_to_message(msg, exclusive);
1192 status = messaging_send_buf(fsp->conn->sconn->msg_ctx, exclusive->pid,
1193 MSG_SMB_BREAK_REQUEST,
1194 (uint8 *)msg, sizeof(msg));
1195 if (!NT_STATUS_IS_OK(status)) {
1196 DEBUG(3, ("Could not send oplock break message: %s\n",
1197 nt_errstr(status)));
1204 * Return share_mode_entry pointers for :
1205 * 1). Batch oplock entry.
1206 * 2). Batch or exclusive oplock entry (may be identical to #1).
1207 * bool have_level2_oplock
1208 * bool have_no_oplock.
1209 * Do internal consistency checks on the share mode for a file.
1212 static void find_oplock_types(files_struct *fsp,
1214 const struct share_mode_lock *lck,
1215 struct share_mode_entry **pp_batch,
1216 struct share_mode_entry **pp_ex_or_batch,
1218 bool *got_no_oplock)
1220 struct share_mode_data *d = lck->data;
1224 *pp_ex_or_batch = NULL;
1225 *got_level2 = false;
1226 *got_no_oplock = false;
1228 /* Ignore stat or internal opens, as is done in
1229 delay_for_batch_oplocks() and
1230 delay_for_exclusive_oplocks().
1232 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1236 for (i=0; i<d->num_share_modes; i++) {
1237 struct share_mode_entry *e = &d->share_modes[i];
1239 if (!is_valid_share_mode_entry(e)) {
1243 if (e->op_type == NO_OPLOCK && is_stat_open(e->access_mask)) {
1244 /* We ignore stat opens in the table - they
1245 always have NO_OPLOCK and never get or
1246 cause breaks. JRA. */
1250 if (BATCH_OPLOCK_TYPE(e->op_type)) {
1251 /* batch - can only be one. */
1252 if (share_mode_stale_pid(d, i)) {
1253 DEBUG(10, ("Found stale batch oplock\n"));
1256 if (*pp_ex_or_batch || *pp_batch || *got_level2 || *got_no_oplock) {
1257 smb_panic("Bad batch oplock entry.");
1262 if (EXCLUSIVE_OPLOCK_TYPE(e->op_type)) {
1263 if (share_mode_stale_pid(d, i)) {
1264 DEBUG(10, ("Found stale duplicate oplock\n"));
1267 /* Exclusive or batch - can only be one. */
1268 if (*pp_ex_or_batch || *got_level2 || *got_no_oplock) {
1269 smb_panic("Bad exclusive or batch oplock entry.");
1271 *pp_ex_or_batch = e;
1274 if (LEVEL_II_OPLOCK_TYPE(e->op_type)) {
1275 if (*pp_batch || *pp_ex_or_batch) {
1276 if (share_mode_stale_pid(d, i)) {
1277 DEBUG(10, ("Found stale LevelII "
1281 smb_panic("Bad levelII oplock entry.");
1286 if (e->op_type == NO_OPLOCK) {
1287 if (*pp_batch || *pp_ex_or_batch) {
1288 if (share_mode_stale_pid(d, i)) {
1289 DEBUG(10, ("Found stale NO_OPLOCK "
1293 smb_panic("Bad no oplock entry.");
1295 *got_no_oplock = true;
1300 static bool delay_for_oplock(files_struct *fsp,
1303 struct share_mode_entry *entry)
1305 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1308 if (entry == NULL) {
1312 if (server_id_is_disconnected(&entry->pid)) {
1315 * This could be achieved by sending a break message
1316 * to ourselves. Special considerations for files
1317 * with delete_on_close flag set!
1319 * For now we keep it simple and do not
1320 * allow delete on close for durable handles.
1325 send_break_message(fsp, entry, mid, oplock_request);
1329 static bool file_has_brlocks(files_struct *fsp)
1331 struct byte_range_lock *br_lck;
1333 br_lck = brl_get_locks_readonly(fsp);
1337 return (brl_num_locks(br_lck) > 0);
1340 static void grant_fsp_oplock_type(files_struct *fsp,
1342 bool got_level2_oplock,
1343 bool got_a_none_oplock)
1345 bool allow_level2 = (global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
1346 lp_level2_oplocks(SNUM(fsp->conn));
1348 /* Start by granting what the client asked for,
1349 but ensure no SAMBA_PRIVATE bits can be set. */
1350 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
1352 if (oplock_request & INTERNAL_OPEN_ONLY) {
1353 /* No oplocks on internal open. */
1354 fsp->oplock_type = NO_OPLOCK;
1355 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1356 fsp->oplock_type, fsp_str_dbg(fsp)));
1360 if (lp_locking(fsp->conn->params) && file_has_brlocks(fsp)) {
1361 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1363 fsp->oplock_type = NO_OPLOCK;
1366 if (is_stat_open(fsp->access_mask)) {
1367 /* Leave the value already set. */
1368 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1369 fsp->oplock_type, fsp_str_dbg(fsp)));
1374 * Match what was requested (fsp->oplock_type) with
1375 * what was found in the existing share modes.
1378 if (got_level2_oplock || got_a_none_oplock) {
1379 if (EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) {
1380 fsp->oplock_type = LEVEL_II_OPLOCK;
1385 * Don't grant level2 to clients that don't want them
1386 * or if we've turned them off.
1388 if (fsp->oplock_type == LEVEL_II_OPLOCK && !allow_level2) {
1389 fsp->oplock_type = NO_OPLOCK;
1392 if (fsp->oplock_type == LEVEL_II_OPLOCK && !got_level2_oplock) {
1394 * We're the first level2 oplock. Indicate that in brlock.tdb.
1396 struct byte_range_lock *brl;
1398 brl = brl_get_locks(talloc_tos(), fsp);
1400 brl_set_have_read_oplocks(brl, true);
1405 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1406 fsp->oplock_type, fsp_str_dbg(fsp)));
1409 static bool request_timed_out(struct timeval request_time,
1410 struct timeval timeout)
1412 struct timeval now, end_time;
1414 end_time = timeval_sum(&request_time, &timeout);
1415 return (timeval_compare(&end_time, &now) < 0);
1418 struct defer_open_state {
1419 struct smbd_server_connection *sconn;
1423 static void defer_open_done(struct tevent_req *req);
1425 /****************************************************************************
1426 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1427 ****************************************************************************/
1429 static void defer_open(struct share_mode_lock *lck,
1430 struct timeval request_time,
1431 struct timeval timeout,
1432 struct smb_request *req,
1433 struct deferred_open_record *state)
1435 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1436 "open entry for mid %llu\n",
1437 (unsigned int)request_time.tv_sec,
1438 (unsigned int)request_time.tv_usec,
1439 (unsigned long long)req->mid));
1441 if (!push_deferred_open_message_smb(req, request_time, timeout,
1442 state->id, (char *)state, sizeof(*state))) {
1444 exit_server("push_deferred_open_message_smb failed");
1447 struct defer_open_state *watch_state;
1448 struct tevent_req *watch_req;
1451 watch_state = talloc(req->sconn, struct defer_open_state);
1452 if (watch_state == NULL) {
1453 exit_server("talloc failed");
1455 watch_state->sconn = req->sconn;
1456 watch_state->mid = req->mid;
1458 DEBUG(10, ("defering mid %llu\n",
1459 (unsigned long long)req->mid));
1461 watch_req = dbwrap_record_watch_send(
1462 watch_state, req->sconn->ev_ctx, lck->data->record,
1463 req->sconn->msg_ctx);
1464 if (watch_req == NULL) {
1465 exit_server("Could not watch share mode record");
1467 tevent_req_set_callback(watch_req, defer_open_done,
1470 ret = tevent_req_set_endtime(
1471 watch_req, req->sconn->ev_ctx,
1472 timeval_sum(&request_time, &timeout));
1477 static void defer_open_done(struct tevent_req *req)
1479 struct defer_open_state *state = tevent_req_callback_data(
1480 req, struct defer_open_state);
1484 status = dbwrap_record_watch_recv(req, talloc_tos(), NULL);
1486 if (!NT_STATUS_IS_OK(status)) {
1487 DEBUG(5, ("dbwrap_record_watch_recv returned %s\n",
1488 nt_errstr(status)));
1490 * Even if it failed, retry anyway. TODO: We need a way to
1491 * tell a re-scheduled open about that error.
1495 DEBUG(10, ("scheduling mid %llu\n", (unsigned long long)state->mid));
1497 ret = schedule_deferred_open_message_smb(state->sconn, state->mid);
1503 /****************************************************************************
1504 On overwrite open ensure that the attributes match.
1505 ****************************************************************************/
1507 static bool open_match_attributes(connection_struct *conn,
1508 uint32 old_dos_attr,
1509 uint32 new_dos_attr,
1510 mode_t existing_unx_mode,
1511 mode_t new_unx_mode,
1512 mode_t *returned_unx_mode)
1514 uint32 noarch_old_dos_attr, noarch_new_dos_attr;
1516 noarch_old_dos_attr = (old_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1517 noarch_new_dos_attr = (new_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1519 if((noarch_old_dos_attr == 0 && noarch_new_dos_attr != 0) ||
1520 (noarch_old_dos_attr != 0 && ((noarch_old_dos_attr & noarch_new_dos_attr) == noarch_old_dos_attr))) {
1521 *returned_unx_mode = new_unx_mode;
1523 *returned_unx_mode = (mode_t)0;
1526 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1527 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1528 "returned_unx_mode = 0%o\n",
1529 (unsigned int)old_dos_attr,
1530 (unsigned int)existing_unx_mode,
1531 (unsigned int)new_dos_attr,
1532 (unsigned int)*returned_unx_mode ));
1534 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1535 if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1536 if ((old_dos_attr & FILE_ATTRIBUTE_SYSTEM) &&
1537 !(new_dos_attr & FILE_ATTRIBUTE_SYSTEM)) {
1541 if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1542 if ((old_dos_attr & FILE_ATTRIBUTE_HIDDEN) &&
1543 !(new_dos_attr & FILE_ATTRIBUTE_HIDDEN)) {
1550 /****************************************************************************
1551 Special FCB or DOS processing in the case of a sharing violation.
1552 Try and find a duplicated file handle.
1553 ****************************************************************************/
1555 static NTSTATUS fcb_or_dos_open(struct smb_request *req,
1556 connection_struct *conn,
1557 files_struct *fsp_to_dup_into,
1558 const struct smb_filename *smb_fname,
1563 uint32 share_access,
1564 uint32 create_options)
1568 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1569 "file %s.\n", smb_fname_str_dbg(smb_fname)));
1571 for(fsp = file_find_di_first(conn->sconn, id); fsp;
1572 fsp = file_find_di_next(fsp)) {
1574 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1575 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1576 "access_mask = 0x%x\n", fsp_str_dbg(fsp),
1577 fsp->fh->fd, (unsigned long long)fsp->vuid,
1578 (unsigned int)fsp->file_pid,
1579 (unsigned int)fsp->fh->private_options,
1580 (unsigned int)fsp->access_mask ));
1582 if (fsp != fsp_to_dup_into &&
1583 fsp->fh->fd != -1 &&
1584 fsp->vuid == vuid &&
1585 fsp->file_pid == file_pid &&
1586 (fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
1587 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
1588 (fsp->access_mask & FILE_WRITE_DATA) &&
1589 strequal(fsp->fsp_name->base_name, smb_fname->base_name) &&
1590 strequal(fsp->fsp_name->stream_name,
1591 smb_fname->stream_name)) {
1592 DEBUG(10,("fcb_or_dos_open: file match\n"));
1598 return NT_STATUS_NOT_FOUND;
1601 /* quite an insane set of semantics ... */
1602 if (is_executable(smb_fname->base_name) &&
1603 (fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
1604 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1605 return NT_STATUS_INVALID_PARAMETER;
1608 /* We need to duplicate this fsp. */
1609 return dup_file_fsp(req, fsp, access_mask, share_access,
1610 create_options, fsp_to_dup_into);
1613 static void schedule_defer_open(struct share_mode_lock *lck,
1614 struct timeval request_time,
1615 struct smb_request *req)
1617 struct deferred_open_record state;
1619 /* This is a relative time, added to the absolute
1620 request_time value to get the absolute timeout time.
1621 Note that if this is the second or greater time we enter
1622 this codepath for this particular request mid then
1623 request_time is left as the absolute time of the *first*
1624 time this request mid was processed. This is what allows
1625 the request to eventually time out. */
1627 struct timeval timeout;
1629 /* Normally the smbd we asked should respond within
1630 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1631 * the client did, give twice the timeout as a safety
1632 * measure here in case the other smbd is stuck
1633 * somewhere else. */
1635 timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
1637 /* Nothing actually uses state.delayed_for_oplocks
1638 but it's handy to differentiate in debug messages
1639 between a 30 second delay due to oplock break, and
1640 a 1 second delay for share mode conflicts. */
1642 state.delayed_for_oplocks = True;
1643 state.async_open = false;
1644 state.id = lck->data->id;
1646 if (!request_timed_out(request_time, timeout)) {
1647 defer_open(lck, request_time, timeout, req, &state);
1651 /****************************************************************************
1652 Reschedule an open call that went asynchronous.
1653 ****************************************************************************/
1655 static void schedule_async_open(struct timeval request_time,
1656 struct smb_request *req)
1658 struct deferred_open_record state;
1659 struct timeval timeout;
1661 timeout = timeval_set(20, 0);
1664 state.delayed_for_oplocks = false;
1665 state.async_open = true;
1667 if (!request_timed_out(request_time, timeout)) {
1668 defer_open(NULL, request_time, timeout, req, &state);
1672 /****************************************************************************
1673 Work out what access_mask to use from what the client sent us.
1674 ****************************************************************************/
1676 static NTSTATUS smbd_calculate_maximum_allowed_access(
1677 connection_struct *conn,
1678 const struct smb_filename *smb_fname,
1680 uint32_t *p_access_mask)
1682 struct security_descriptor *sd;
1683 uint32_t access_granted;
1686 if (!use_privs && (get_current_uid(conn) == (uid_t)0)) {
1687 *p_access_mask |= FILE_GENERIC_ALL;
1688 return NT_STATUS_OK;
1691 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
1697 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1699 * File did not exist
1701 *p_access_mask = FILE_GENERIC_ALL;
1702 return NT_STATUS_OK;
1704 if (!NT_STATUS_IS_OK(status)) {
1705 DEBUG(10,("Could not get acl on file %s: %s\n",
1706 smb_fname_str_dbg(smb_fname),
1707 nt_errstr(status)));
1708 return NT_STATUS_ACCESS_DENIED;
1712 * If we can access the path to this file, by
1713 * default we have FILE_READ_ATTRIBUTES from the
1714 * containing directory. See the section:
1715 * "Algorithm to Check Access to an Existing File"
1718 * se_file_access_check()
1719 * also takes care of owner WRITE_DAC and READ_CONTROL.
1721 status = se_file_access_check(sd,
1722 get_current_nttok(conn),
1724 (*p_access_mask & ~FILE_READ_ATTRIBUTES),
1729 if (!NT_STATUS_IS_OK(status)) {
1730 DEBUG(10, ("Access denied on file %s: "
1731 "when calculating maximum access\n",
1732 smb_fname_str_dbg(smb_fname)));
1733 return NT_STATUS_ACCESS_DENIED;
1735 *p_access_mask = (access_granted | FILE_READ_ATTRIBUTES);
1737 if (!(access_granted & DELETE_ACCESS)) {
1738 if (can_delete_file_in_directory(conn, smb_fname)) {
1739 *p_access_mask |= DELETE_ACCESS;
1743 return NT_STATUS_OK;
1746 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
1747 const struct smb_filename *smb_fname,
1749 uint32_t access_mask,
1750 uint32_t *access_mask_out)
1753 uint32_t orig_access_mask = access_mask;
1754 uint32_t rejected_share_access;
1757 * Convert GENERIC bits to specific bits.
1760 se_map_generic(&access_mask, &file_generic_mapping);
1762 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1763 if (access_mask & MAXIMUM_ALLOWED_ACCESS) {
1765 status = smbd_calculate_maximum_allowed_access(
1766 conn, smb_fname, use_privs, &access_mask);
1768 if (!NT_STATUS_IS_OK(status)) {
1772 access_mask &= conn->share_access;
1775 rejected_share_access = access_mask & ~(conn->share_access);
1777 if (rejected_share_access) {
1778 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1779 "file %s: rejected by share access mask[0x%08X] "
1780 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1781 smb_fname_str_dbg(smb_fname),
1783 orig_access_mask, access_mask,
1784 rejected_share_access));
1785 return NT_STATUS_ACCESS_DENIED;
1788 *access_mask_out = access_mask;
1789 return NT_STATUS_OK;
1792 /****************************************************************************
1793 Remove the deferred open entry under lock.
1794 ****************************************************************************/
1796 /****************************************************************************
1797 Return true if this is a state pointer to an asynchronous create.
1798 ****************************************************************************/
1800 bool is_deferred_open_async(const void *ptr)
1802 const struct deferred_open_record *state = (const struct deferred_open_record *)ptr;
1804 return state->async_open;
1807 static bool clear_ads(uint32_t create_disposition)
1811 switch (create_disposition) {
1812 case FILE_SUPERSEDE:
1813 case FILE_OVERWRITE_IF:
1814 case FILE_OVERWRITE:
1823 static int disposition_to_open_flags(uint32_t create_disposition)
1828 * Currently we're using FILE_SUPERSEDE as the same as
1829 * FILE_OVERWRITE_IF but they really are
1830 * different. FILE_SUPERSEDE deletes an existing file
1831 * (requiring delete access) then recreates it.
1834 switch (create_disposition) {
1835 case FILE_SUPERSEDE:
1836 case FILE_OVERWRITE_IF:
1838 * If file exists replace/overwrite. If file doesn't
1841 ret = O_CREAT|O_TRUNC;
1846 * If file exists open. If file doesn't exist error.
1851 case FILE_OVERWRITE:
1853 * If file exists overwrite. If file doesn't exist
1861 * If file exists error. If file doesn't exist create.
1863 ret = O_CREAT|O_EXCL;
1868 * If file exists open. If file doesn't exist create.
1876 static int calculate_open_access_flags(uint32_t access_mask,
1878 uint32_t private_flags)
1880 bool need_write, need_read;
1883 * Note that we ignore the append flag as append does not
1884 * mean the same thing under DOS and Unix.
1887 need_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA));
1892 /* DENY_DOS opens are always underlying read-write on the
1893 file handle, no matter what the requested access mask
1897 ((private_flags & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
1898 access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|
1899 FILE_READ_EA|FILE_EXECUTE));
1907 /****************************************************************************
1908 Open a file with a share mode. Passed in an already created files_struct *.
1909 ****************************************************************************/
1911 static NTSTATUS open_file_ntcreate(connection_struct *conn,
1912 struct smb_request *req,
1913 uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
1914 uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
1915 uint32 create_disposition, /* FILE_OPEN_IF etc. */
1916 uint32 create_options, /* options such as delete on close. */
1917 uint32 new_dos_attributes, /* attributes used for new file. */
1918 int oplock_request, /* internal Samba oplock codes. */
1919 /* Information (FILE_EXISTS etc.) */
1920 uint32_t private_flags, /* Samba specific flags. */
1924 struct smb_filename *smb_fname = fsp->fsp_name;
1927 bool file_existed = VALID_STAT(smb_fname->st);
1928 bool def_acl = False;
1929 bool posix_open = False;
1930 bool new_file_created = False;
1931 bool first_open_attempt = true;
1932 NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
1933 mode_t new_unx_mode = (mode_t)0;
1934 mode_t unx_mode = (mode_t)0;
1936 uint32 existing_dos_attributes = 0;
1937 struct timeval request_time = timeval_zero();
1938 struct share_mode_lock *lck = NULL;
1939 uint32 open_access_mask = access_mask;
1942 SMB_STRUCT_STAT saved_stat = smb_fname->st;
1943 struct share_mode_entry *batch_entry = NULL;
1944 struct share_mode_entry *exclusive_entry = NULL;
1945 bool got_level2_oplock = false;
1946 bool got_a_none_oplock = false;
1947 struct timespec old_write_time;
1950 if (conn->printer) {
1952 * Printers are handled completely differently.
1953 * Most of the passed parameters are ignored.
1957 *pinfo = FILE_WAS_CREATED;
1960 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1961 smb_fname_str_dbg(smb_fname)));
1964 DEBUG(0,("open_file_ntcreate: printer open without "
1965 "an SMB request!\n"));
1966 return NT_STATUS_INTERNAL_ERROR;
1969 return print_spool_open(fsp, smb_fname->base_name,
1973 if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
1975 return NT_STATUS_NO_MEMORY;
1978 if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1980 unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
1981 new_dos_attributes = 0;
1983 /* Windows allows a new file to be created and
1984 silently removes a FILE_ATTRIBUTE_DIRECTORY
1985 sent by the client. Do the same. */
1987 new_dos_attributes &= ~FILE_ATTRIBUTE_DIRECTORY;
1989 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1991 unx_mode = unix_mode(conn, new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
1992 smb_fname, parent_dir);
1995 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1996 "access_mask=0x%x share_access=0x%x "
1997 "create_disposition = 0x%x create_options=0x%x "
1998 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1999 smb_fname_str_dbg(smb_fname), new_dos_attributes,
2000 access_mask, share_access, create_disposition,
2001 create_options, (unsigned int)unx_mode, oplock_request,
2002 (unsigned int)private_flags));
2004 if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
2005 DEBUG(0, ("No smb request but not an internal only open!\n"));
2006 return NT_STATUS_INTERNAL_ERROR;
2010 * Only non-internal opens can be deferred at all
2015 if (get_deferred_open_message_state(req,
2018 /* Remember the absolute time of the original
2019 request with this mid. We'll use it later to
2020 see if this has timed out. */
2022 /* If it was an async create retry, the file
2025 if (is_deferred_open_async(ptr)) {
2026 SET_STAT_INVALID(smb_fname->st);
2027 file_existed = false;
2030 /* Ensure we don't reprocess this message. */
2031 remove_deferred_open_message_smb(req->sconn, req->mid);
2033 first_open_attempt = false;
2038 new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
2040 existing_dos_attributes = dos_mode(conn, smb_fname);
2044 /* ignore any oplock requests if oplocks are disabled */
2045 if (!lp_oplocks(SNUM(conn)) ||
2046 IS_VETO_OPLOCK_PATH(conn, smb_fname->base_name)) {
2047 /* Mask off everything except the private Samba bits. */
2048 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
2051 /* this is for OS/2 long file names - say we don't support them */
2052 if (!lp_posix_pathnames() && strstr(smb_fname->base_name,".+,;=[].")) {
2053 /* OS/2 Workplace shell fix may be main code stream in a later
2055 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
2057 if (use_nt_status()) {
2058 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2060 return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
2063 switch( create_disposition ) {
2065 /* If file exists open. If file doesn't exist error. */
2066 if (!file_existed) {
2067 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
2068 "requested for file %s and file "
2070 smb_fname_str_dbg(smb_fname)));
2072 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2076 case FILE_OVERWRITE:
2077 /* If file exists overwrite. If file doesn't exist
2079 if (!file_existed) {
2080 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
2081 "requested for file %s and file "
2083 smb_fname_str_dbg(smb_fname) ));
2085 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2090 /* If file exists error. If file doesn't exist
2093 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
2094 "requested for file %s and file "
2095 "already exists.\n",
2096 smb_fname_str_dbg(smb_fname)));
2097 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
2102 return map_nt_error_from_unix(errno);
2106 case FILE_SUPERSEDE:
2107 case FILE_OVERWRITE_IF:
2111 return NT_STATUS_INVALID_PARAMETER;
2114 flags2 = disposition_to_open_flags(create_disposition);
2116 /* We only care about matching attributes on file exists and
2119 if (!posix_open && file_existed &&
2120 ((create_disposition == FILE_OVERWRITE) ||
2121 (create_disposition == FILE_OVERWRITE_IF))) {
2122 if (!open_match_attributes(conn, existing_dos_attributes,
2124 smb_fname->st.st_ex_mode,
2125 unx_mode, &new_unx_mode)) {
2126 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2127 "for file %s (%x %x) (0%o, 0%o)\n",
2128 smb_fname_str_dbg(smb_fname),
2129 existing_dos_attributes,
2131 (unsigned int)smb_fname->st.st_ex_mode,
2132 (unsigned int)unx_mode ));
2134 return NT_STATUS_ACCESS_DENIED;
2138 status = smbd_calculate_access_mask(conn, smb_fname,
2142 if (!NT_STATUS_IS_OK(status)) {
2143 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2144 "on file %s returned %s\n",
2145 smb_fname_str_dbg(smb_fname), nt_errstr(status)));
2149 open_access_mask = access_mask;
2151 if (flags2 & O_TRUNC) {
2152 open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
2155 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2156 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname),
2160 * Note that we ignore the append flag as append does not
2161 * mean the same thing under DOS and Unix.
2164 flags = calculate_open_access_flags(access_mask, oplock_request,
2168 * Currently we only look at FILE_WRITE_THROUGH for create options.
2172 if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
2177 if (posix_open && (access_mask & FILE_APPEND_DATA)) {
2181 if (!posix_open && !CAN_WRITE(conn)) {
2183 * We should really return a permission denied error if either
2184 * O_CREAT or O_TRUNC are set, but for compatibility with
2185 * older versions of Samba we just AND them out.
2187 flags2 &= ~(O_CREAT|O_TRUNC);
2190 if (first_open_attempt && lp_kernel_oplocks(SNUM(conn))) {
2192 * With kernel oplocks the open breaking an oplock
2193 * blocks until the oplock holder has given up the
2194 * oplock or closed the file. We prevent this by first
2195 * trying to open the file with O_NONBLOCK (see "man
2196 * fcntl" on Linux). For the second try, triggered by
2197 * an oplock break response, we do not need this
2200 * This is true under the assumption that only Samba
2201 * requests kernel oplocks. Once someone else like
2202 * NFSv4 starts to use that API, we will have to
2203 * modify this by communicating with the NFSv4 server.
2205 flags2 |= O_NONBLOCK;
2209 * Ensure we can't write on a read-only share or file.
2212 if (flags != O_RDONLY && file_existed &&
2213 (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
2214 DEBUG(5,("open_file_ntcreate: write access requested for "
2215 "file %s on read only %s\n",
2216 smb_fname_str_dbg(smb_fname),
2217 !CAN_WRITE(conn) ? "share" : "file" ));
2219 return NT_STATUS_ACCESS_DENIED;
2222 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
2223 fsp->share_access = share_access;
2224 fsp->fh->private_options = private_flags;
2225 fsp->access_mask = open_access_mask; /* We change this to the
2226 * requested access_mask after
2227 * the open is done. */
2228 fsp->posix_open = posix_open;
2230 /* Ensure no SAMBA_PRIVATE bits can be set. */
2231 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
2233 if (timeval_is_zero(&request_time)) {
2234 request_time = fsp->open_time;
2238 * Ensure we pay attention to default ACLs on directories if required.
2241 if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
2242 (def_acl = directory_has_default_acl(conn, parent_dir))) {
2243 unx_mode = (0777 & lp_create_mask(SNUM(conn)));
2246 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2247 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2248 (unsigned int)flags, (unsigned int)flags2,
2249 (unsigned int)unx_mode, (unsigned int)access_mask,
2250 (unsigned int)open_access_mask));
2252 fsp_open = open_file(fsp, conn, req, parent_dir,
2253 flags|flags2, unx_mode, access_mask,
2254 open_access_mask, &new_file_created);
2256 if (NT_STATUS_EQUAL(fsp_open, NT_STATUS_NETWORK_BUSY)) {
2257 struct deferred_open_record state;
2260 * EWOULDBLOCK/EAGAIN maps to NETWORK_BUSY.
2262 if (file_existed && S_ISFIFO(fsp->fsp_name->st.st_ex_mode)) {
2263 DEBUG(10, ("FIFO busy\n"));
2264 return NT_STATUS_NETWORK_BUSY;
2267 DEBUG(10, ("Internal open busy\n"));
2268 return NT_STATUS_NETWORK_BUSY;
2272 * From here on we assume this is an oplock break triggered
2275 lck = get_existing_share_mode_lock(talloc_tos(), fsp->file_id);
2277 state.delayed_for_oplocks = false;
2278 state.async_open = false;
2279 state.id = fsp->file_id;
2280 defer_open(NULL, request_time, timeval_set(0, 0),
2282 DEBUG(10, ("No share mode lock found after "
2283 "EWOULDBLOCK, retrying sync\n"));
2284 return NT_STATUS_SHARING_VIOLATION;
2287 find_oplock_types(fsp, 0, lck, &batch_entry, &exclusive_entry,
2288 &got_level2_oplock, &got_a_none_oplock);
2290 if (delay_for_oplock(fsp, req->mid, 0, batch_entry) ||
2291 delay_for_oplock(fsp, req->mid, 0, exclusive_entry)) {
2292 schedule_defer_open(lck, request_time, req);
2294 DEBUG(10, ("Sent oplock break request to kernel "
2295 "oplock holder\n"));
2296 return NT_STATUS_SHARING_VIOLATION;
2300 * No oplock from Samba around. Immediately retry with
2303 state.delayed_for_oplocks = false;
2304 state.async_open = false;
2305 state.id = lck->data->id;
2306 defer_open(lck, request_time, timeval_set(0, 0), req, &state);
2308 DEBUG(10, ("No Samba oplock around after EWOULDBLOCK. "
2309 "Retrying sync\n"));
2310 return NT_STATUS_SHARING_VIOLATION;
2313 if (!NT_STATUS_IS_OK(fsp_open)) {
2314 if (NT_STATUS_EQUAL(fsp_open, NT_STATUS_RETRY)) {
2315 schedule_async_open(request_time, req);
2320 if (file_existed && !check_same_dev_ino(&saved_stat, &smb_fname->st)) {
2322 * The file did exist, but some other (local or NFS)
2323 * process either renamed/unlinked and re-created the
2324 * file with different dev/ino after we walked the path,
2325 * but before we did the open. We could retry the
2326 * open but it's a rare enough case it's easier to
2327 * just fail the open to prevent creating any problems
2328 * in the open file db having the wrong dev/ino key.
2331 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2332 "Old (dev=0x%llu, ino =0x%llu). "
2333 "New (dev=0x%llu, ino=0x%llu). Failing open "
2334 " with NT_STATUS_ACCESS_DENIED.\n",
2335 smb_fname_str_dbg(smb_fname),
2336 (unsigned long long)saved_stat.st_ex_dev,
2337 (unsigned long long)saved_stat.st_ex_ino,
2338 (unsigned long long)smb_fname->st.st_ex_dev,
2339 (unsigned long long)smb_fname->st.st_ex_ino));
2340 return NT_STATUS_ACCESS_DENIED;
2343 old_write_time = smb_fname->st.st_ex_mtime;
2346 * Deal with the race condition where two smbd's detect the
2347 * file doesn't exist and do the create at the same time. One
2348 * of them will win and set a share mode, the other (ie. this
2349 * one) should check if the requested share mode for this
2350 * create is allowed.
2354 * Now the file exists and fsp is successfully opened,
2355 * fsp->dev and fsp->inode are valid and should replace the
2356 * dev=0,inode=0 from a non existent file. Spotted by
2357 * Nadav Danieli <nadavd@exanet.com>. JRA.
2362 lck = get_share_mode_lock(talloc_tos(), id,
2364 smb_fname, &old_write_time);
2367 DEBUG(0, ("open_file_ntcreate: Could not get share "
2368 "mode lock for %s\n",
2369 smb_fname_str_dbg(smb_fname)));
2371 return NT_STATUS_SHARING_VIOLATION;
2374 /* Get the types we need to examine. */
2375 find_oplock_types(fsp,
2381 &got_a_none_oplock);
2383 if (has_delete_on_close(lck, fsp->name_hash)) {
2386 return NT_STATUS_DELETE_PENDING;
2389 /* First pass - send break only on batch oplocks. */
2390 if ((req != NULL) &&
2391 delay_for_oplock(fsp, req->mid, oplock_request,
2393 schedule_defer_open(lck, request_time, req);
2396 return NT_STATUS_SHARING_VIOLATION;
2399 status = open_mode_check(conn, lck,
2400 access_mask, share_access,
2403 if (NT_STATUS_IS_OK(status)) {
2404 /* We might be going to allow this open. Check oplock
2406 /* Second pass - send break for both batch or
2407 * exclusive oplocks. */
2408 if ((req != NULL) &&
2409 delay_for_oplock(fsp, req->mid, oplock_request,
2411 schedule_defer_open(lck, request_time, req);
2414 return NT_STATUS_SHARING_VIOLATION;
2418 if (!NT_STATUS_IS_OK(status)) {
2419 uint32 can_access_mask;
2420 bool can_access = True;
2422 SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
2424 /* Check if this can be done with the deny_dos and fcb
2427 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
2428 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
2430 DEBUG(0, ("DOS open without an SMB "
2434 return NT_STATUS_INTERNAL_ERROR;
2437 /* Use the client requested access mask here,
2438 * not the one we open with. */
2439 status = fcb_or_dos_open(req,
2450 if (NT_STATUS_IS_OK(status)) {
2453 *pinfo = FILE_WAS_OPENED;
2455 return NT_STATUS_OK;
2460 * This next line is a subtlety we need for
2461 * MS-Access. If a file open will fail due to share
2462 * permissions and also for security (access) reasons,
2463 * we need to return the access failed error, not the
2464 * share error. We can't open the file due to kernel
2465 * oplock deadlock (it's possible we failed above on
2466 * the open_mode_check()) so use a userspace check.
2469 if (flags & O_RDWR) {
2470 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
2471 } else if (flags & O_WRONLY) {
2472 can_access_mask = FILE_WRITE_DATA;
2474 can_access_mask = FILE_READ_DATA;
2477 if (((can_access_mask & FILE_WRITE_DATA) &&
2478 !CAN_WRITE(conn)) ||
2479 !NT_STATUS_IS_OK(smbd_check_access_rights(conn,
2482 can_access_mask))) {
2487 * If we're returning a share violation, ensure we
2488 * cope with the braindead 1 second delay (SMB1 only).
2491 if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
2492 !conn->sconn->using_smb2 &&
2493 lp_defer_sharing_violations()) {
2494 struct timeval timeout;
2495 struct deferred_open_record state;
2498 /* this is a hack to speed up torture tests
2500 timeout_usecs = lp_parm_int(SNUM(conn),
2501 "smbd","sharedelay",
2502 SHARING_VIOLATION_USEC_WAIT);
2504 /* This is a relative time, added to the absolute
2505 request_time value to get the absolute timeout time.
2506 Note that if this is the second or greater time we enter
2507 this codepath for this particular request mid then
2508 request_time is left as the absolute time of the *first*
2509 time this request mid was processed. This is what allows
2510 the request to eventually time out. */
2512 timeout = timeval_set(0, timeout_usecs);
2514 /* Nothing actually uses state.delayed_for_oplocks
2515 but it's handy to differentiate in debug messages
2516 between a 30 second delay due to oplock break, and
2517 a 1 second delay for share mode conflicts. */
2519 state.delayed_for_oplocks = False;
2520 state.async_open = false;
2524 && !request_timed_out(request_time,
2526 defer_open(lck, request_time, timeout,
2535 * We have detected a sharing violation here
2536 * so return the correct error code
2538 status = NT_STATUS_SHARING_VIOLATION;
2540 status = NT_STATUS_ACCESS_DENIED;
2545 grant_fsp_oplock_type(fsp,
2551 * We have the share entry *locked*.....
2554 /* Delete streams if create_disposition requires it */
2555 if (!new_file_created && clear_ads(create_disposition) &&
2556 !is_ntfs_stream_smb_fname(smb_fname)) {
2557 status = delete_all_streams(conn, smb_fname->base_name);
2558 if (!NT_STATUS_IS_OK(status)) {
2565 /* note that we ignore failure for the following. It is
2566 basically a hack for NFS, and NFS will never set one of
2567 these only read them. Nobody but Samba can ever set a deny
2568 mode and we have already checked our more authoritative
2569 locking database for permission to set this deny mode. If
2570 the kernel refuses the operations then the kernel is wrong.
2571 note that GPFS supports it as well - jmcd */
2573 if (fsp->fh->fd != -1 && lp_kernel_share_modes(SNUM(conn))) {
2575 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
2576 if(ret_flock == -1 ){
2581 return NT_STATUS_SHARING_VIOLATION;
2586 * At this point onwards, we can guarantee that the share entry
2587 * is locked, whether we created the file or not, and that the
2588 * deny mode is compatible with all current opens.
2592 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2593 * but we don't have to store this - just ignore it on access check.
2595 if (conn->sconn->using_smb2) {
2597 * SMB2 doesn't return it (according to Microsoft tests).
2598 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2599 * File created with access = 0x7 (Read, Write, Delete)
2600 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2602 fsp->access_mask = access_mask;
2604 /* But SMB1 does. */
2605 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2609 /* stat opens on existing files don't get oplocks. */
2610 if (is_stat_open(open_access_mask)) {
2611 fsp->oplock_type = NO_OPLOCK;
2615 if (new_file_created) {
2616 info = FILE_WAS_CREATED;
2618 if (flags2 & O_TRUNC) {
2619 info = FILE_WAS_OVERWRITTEN;
2621 info = FILE_WAS_OPENED;
2630 * Setup the oplock info in both the shared memory and
2634 status = set_file_oplock(fsp, fsp->oplock_type);
2635 if (!NT_STATUS_IS_OK(status)) {
2637 * Could not get the kernel oplock
2639 fsp->oplock_type = NO_OPLOCK;
2642 if (!set_share_mode(lck, fsp, get_current_uid(conn),
2644 fsp->oplock_type)) {
2647 return NT_STATUS_NO_MEMORY;
2650 /* Handle strange delete on close create semantics. */
2651 if (create_options & FILE_DELETE_ON_CLOSE) {
2653 status = can_set_delete_on_close(fsp, new_dos_attributes);
2655 if (!NT_STATUS_IS_OK(status)) {
2656 /* Remember to delete the mode we just added. */
2657 del_share_mode(lck, fsp);
2662 /* Note that here we set the *inital* delete on close flag,
2663 not the regular one. The magic gets handled in close. */
2664 fsp->initial_delete_on_close = True;
2667 if (info != FILE_WAS_OPENED) {
2668 /* Files should be initially set as archive */
2669 if (lp_map_archive(SNUM(conn)) ||
2670 lp_store_dos_attributes(SNUM(conn))) {
2672 if (file_set_dosmode(conn, smb_fname,
2673 new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
2674 parent_dir, true) == 0) {
2675 unx_mode = smb_fname->st.st_ex_mode;
2681 /* Determine sparse flag. */
2683 /* POSIX opens are sparse by default. */
2684 fsp->is_sparse = true;
2686 fsp->is_sparse = (file_existed &&
2687 (existing_dos_attributes & FILE_ATTRIBUTE_SPARSE));
2691 * Take care of inherited ACLs on created files - if default ACL not
2695 if (!posix_open && new_file_created && !def_acl) {
2697 int saved_errno = errno; /* We might get ENOSYS in the next
2700 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
2702 errno = saved_errno; /* Ignore ENOSYS */
2705 } else if (new_unx_mode) {
2709 /* Attributes need changing. File already existed. */
2712 int saved_errno = errno; /* We might get ENOSYS in the
2714 ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
2716 if (ret == -1 && errno == ENOSYS) {
2717 errno = saved_errno; /* Ignore ENOSYS */
2719 DEBUG(5, ("open_file_ntcreate: reset "
2720 "attributes of file %s to 0%o\n",
2721 smb_fname_str_dbg(smb_fname),
2722 (unsigned int)new_unx_mode));
2723 ret = 0; /* Don't do the fchmod below. */
2728 (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
2729 DEBUG(5, ("open_file_ntcreate: failed to reset "
2730 "attributes of file %s to 0%o\n",
2731 smb_fname_str_dbg(smb_fname),
2732 (unsigned int)new_unx_mode));
2737 return NT_STATUS_OK;
2741 /****************************************************************************
2742 Open a file for for write to ensure that we can fchmod it.
2743 ****************************************************************************/
2745 NTSTATUS open_file_fchmod(connection_struct *conn,
2746 struct smb_filename *smb_fname,
2747 files_struct **result)
2749 if (!VALID_STAT(smb_fname->st)) {
2750 return NT_STATUS_INVALID_PARAMETER;
2753 return SMB_VFS_CREATE_FILE(
2756 0, /* root_dir_fid */
2757 smb_fname, /* fname */
2758 FILE_WRITE_DATA, /* access_mask */
2759 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
2761 FILE_OPEN, /* create_disposition*/
2762 0, /* create_options */
2763 0, /* file_attributes */
2764 INTERNAL_OPEN_ONLY, /* oplock_request */
2765 0, /* allocation_size */
2766 0, /* private_flags */
2769 result, /* result */
2773 static NTSTATUS mkdir_internal(connection_struct *conn,
2774 struct smb_filename *smb_dname,
2775 uint32 file_attributes)
2778 char *parent_dir = NULL;
2780 bool posix_open = false;
2781 bool need_re_stat = false;
2782 uint32_t access_mask = SEC_DIR_ADD_SUBDIR;
2784 if (!CAN_WRITE(conn) || (access_mask & ~(conn->share_access))) {
2785 DEBUG(5,("mkdir_internal: failing share access "
2786 "%s\n", lp_servicename(talloc_tos(), SNUM(conn))));
2787 return NT_STATUS_ACCESS_DENIED;
2790 if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
2792 return NT_STATUS_NO_MEMORY;
2795 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
2797 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
2799 mode = unix_mode(conn, FILE_ATTRIBUTE_DIRECTORY, smb_dname, parent_dir);
2802 status = check_parent_access(conn,
2805 if(!NT_STATUS_IS_OK(status)) {
2806 DEBUG(5,("mkdir_internal: check_parent_access "
2807 "on directory %s for path %s returned %s\n",
2809 smb_dname->base_name,
2810 nt_errstr(status) ));
2814 if (SMB_VFS_MKDIR(conn, smb_dname->base_name, mode) != 0) {
2815 return map_nt_error_from_unix(errno);
2818 /* Ensure we're checking for a symlink here.... */
2819 /* We don't want to get caught by a symlink racer. */
2821 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2822 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2823 smb_fname_str_dbg(smb_dname), strerror(errno)));
2824 return map_nt_error_from_unix(errno);
2827 if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
2828 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2829 smb_fname_str_dbg(smb_dname)));
2830 return NT_STATUS_NOT_A_DIRECTORY;
2833 if (lp_store_dos_attributes(SNUM(conn))) {
2835 file_set_dosmode(conn, smb_dname,
2836 file_attributes | FILE_ATTRIBUTE_DIRECTORY,
2841 if (lp_inherit_perms(SNUM(conn))) {
2842 inherit_access_posix_acl(conn, parent_dir,
2843 smb_dname->base_name, mode);
2844 need_re_stat = true;
2849 * Check if high bits should have been set,
2850 * then (if bits are missing): add them.
2851 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2854 if ((mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) &&
2855 (mode & ~smb_dname->st.st_ex_mode)) {
2856 SMB_VFS_CHMOD(conn, smb_dname->base_name,
2857 (smb_dname->st.st_ex_mode |
2858 (mode & ~smb_dname->st.st_ex_mode)));
2859 need_re_stat = true;
2863 /* Change the owner if required. */
2864 if (lp_inherit_owner(SNUM(conn))) {
2865 change_dir_owner_to_parent(conn, parent_dir,
2866 smb_dname->base_name,
2868 need_re_stat = true;
2872 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2873 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2874 smb_fname_str_dbg(smb_dname), strerror(errno)));
2875 return map_nt_error_from_unix(errno);
2879 notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
2880 smb_dname->base_name);
2882 return NT_STATUS_OK;
2885 /****************************************************************************
2886 Open a directory from an NT SMB call.
2887 ****************************************************************************/
2889 static NTSTATUS open_directory(connection_struct *conn,
2890 struct smb_request *req,
2891 struct smb_filename *smb_dname,
2893 uint32 share_access,
2894 uint32 create_disposition,
2895 uint32 create_options,
2896 uint32 file_attributes,
2898 files_struct **result)
2900 files_struct *fsp = NULL;
2901 bool dir_existed = VALID_STAT(smb_dname->st) ? True : False;
2902 struct share_mode_lock *lck = NULL;
2904 struct timespec mtimespec;
2907 if (is_ntfs_stream_smb_fname(smb_dname)) {
2908 DEBUG(2, ("open_directory: %s is a stream name!\n",
2909 smb_fname_str_dbg(smb_dname)));
2910 return NT_STATUS_NOT_A_DIRECTORY;
2913 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) {
2914 /* Ensure we have a directory attribute. */
2915 file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
2918 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2919 "share_access = 0x%x create_options = 0x%x, "
2920 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2921 smb_fname_str_dbg(smb_dname),
2922 (unsigned int)access_mask,
2923 (unsigned int)share_access,
2924 (unsigned int)create_options,
2925 (unsigned int)create_disposition,
2926 (unsigned int)file_attributes));
2928 status = smbd_calculate_access_mask(conn, smb_dname, false,
2929 access_mask, &access_mask);
2930 if (!NT_STATUS_IS_OK(status)) {
2931 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2932 "on file %s returned %s\n",
2933 smb_fname_str_dbg(smb_dname),
2934 nt_errstr(status)));
2938 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
2939 !security_token_has_privilege(get_current_nttok(conn),
2940 SEC_PRIV_SECURITY)) {
2941 DEBUG(10, ("open_directory: open on %s "
2942 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2943 smb_fname_str_dbg(smb_dname)));
2944 return NT_STATUS_PRIVILEGE_NOT_HELD;
2947 switch( create_disposition ) {
2951 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2954 info = FILE_WAS_OPENED;
2959 /* If directory exists error. If directory doesn't
2963 status = NT_STATUS_OBJECT_NAME_COLLISION;
2964 DEBUG(2, ("open_directory: unable to create "
2965 "%s. Error was %s\n",
2966 smb_fname_str_dbg(smb_dname),
2967 nt_errstr(status)));
2971 status = mkdir_internal(conn, smb_dname,
2974 if (!NT_STATUS_IS_OK(status)) {
2975 DEBUG(2, ("open_directory: unable to create "
2976 "%s. Error was %s\n",
2977 smb_fname_str_dbg(smb_dname),
2978 nt_errstr(status)));
2982 info = FILE_WAS_CREATED;
2987 * If directory exists open. If directory doesn't
2992 status = NT_STATUS_OK;
2993 info = FILE_WAS_OPENED;
2995 status = mkdir_internal(conn, smb_dname,
2998 if (NT_STATUS_IS_OK(status)) {
2999 info = FILE_WAS_CREATED;
3001 /* Cope with create race. */
3002 if (!NT_STATUS_EQUAL(status,
3003 NT_STATUS_OBJECT_NAME_COLLISION)) {
3004 DEBUG(2, ("open_directory: unable to create "
3005 "%s. Error was %s\n",
3006 smb_fname_str_dbg(smb_dname),
3007 nt_errstr(status)));
3010 info = FILE_WAS_OPENED;
3016 case FILE_SUPERSEDE:
3017 case FILE_OVERWRITE:
3018 case FILE_OVERWRITE_IF:
3020 DEBUG(5,("open_directory: invalid create_disposition "
3021 "0x%x for directory %s\n",
3022 (unsigned int)create_disposition,
3023 smb_fname_str_dbg(smb_dname)));
3024 return NT_STATUS_INVALID_PARAMETER;
3027 if(!S_ISDIR(smb_dname->st.st_ex_mode)) {
3028 DEBUG(5,("open_directory: %s is not a directory !\n",
3029 smb_fname_str_dbg(smb_dname)));
3030 return NT_STATUS_NOT_A_DIRECTORY;
3033 if (info == FILE_WAS_OPENED) {
3034 status = smbd_check_access_rights(conn,
3038 if (!NT_STATUS_IS_OK(status)) {
3039 DEBUG(10, ("open_directory: smbd_check_access_rights on "
3040 "file %s failed with %s\n",
3041 smb_fname_str_dbg(smb_dname),
3042 nt_errstr(status)));
3047 status = file_new(req, conn, &fsp);
3048 if(!NT_STATUS_IS_OK(status)) {
3053 * Setup the files_struct for it.
3056 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
3057 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
3058 fsp->file_pid = req ? req->smbpid : 0;
3059 fsp->can_lock = False;
3060 fsp->can_read = False;
3061 fsp->can_write = False;
3063 fsp->share_access = share_access;
3064 fsp->fh->private_options = 0;
3066 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3068 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
3069 fsp->print_file = NULL;
3070 fsp->modified = False;
3071 fsp->oplock_type = NO_OPLOCK;
3072 fsp->sent_oplock_break = NO_BREAK_SENT;
3073 fsp->is_directory = True;
3074 fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
3075 status = fsp_set_smb_fname(fsp, smb_dname);
3076 if (!NT_STATUS_IS_OK(status)) {
3077 file_free(req, fsp);
3081 mtimespec = smb_dname->st.st_ex_mtime;
3084 status = fd_open(conn, fsp, O_RDONLY|O_DIRECTORY, 0);
3086 /* POSIX allows us to open a directory with O_RDONLY. */
3087 status = fd_open(conn, fsp, O_RDONLY, 0);
3089 if (!NT_STATUS_IS_OK(status)) {
3090 DEBUG(5, ("open_directory: Could not open fd for "
3092 smb_fname_str_dbg(smb_dname),
3093 nt_errstr(status)));
3094 file_free(req, fsp);
3098 status = vfs_stat_fsp(fsp);
3099 if (!NT_STATUS_IS_OK(status)) {
3101 file_free(req, fsp);
3105 /* Ensure there was no race condition. */
3106 if (!check_same_stat(&smb_dname->st, &fsp->fsp_name->st)) {
3107 DEBUG(5,("open_directory: stat struct differs for "
3109 smb_fname_str_dbg(smb_dname)));
3111 file_free(req, fsp);
3112 return NT_STATUS_ACCESS_DENIED;
3115 lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
3116 conn->connectpath, smb_dname,
3120 DEBUG(0, ("open_directory: Could not get share mode lock for "
3121 "%s\n", smb_fname_str_dbg(smb_dname)));
3123 file_free(req, fsp);
3124 return NT_STATUS_SHARING_VIOLATION;
3127 if (has_delete_on_close(lck, fsp->name_hash)) {
3130 file_free(req, fsp);
3131 return NT_STATUS_DELETE_PENDING;
3134 status = open_mode_check(conn, lck,
3135 access_mask, share_access,
3138 if (!NT_STATUS_IS_OK(status)) {
3141 file_free(req, fsp);
3145 if (!set_share_mode(lck, fsp, get_current_uid(conn),
3146 req ? req->mid : 0, NO_OPLOCK)) {
3149 file_free(req, fsp);
3150 return NT_STATUS_NO_MEMORY;
3153 /* For directories the delete on close bit at open time seems
3154 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3155 if (create_options & FILE_DELETE_ON_CLOSE) {
3156 status = can_set_delete_on_close(fsp, 0);
3157 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
3158 del_share_mode(lck, fsp);
3161 file_free(req, fsp);
3165 if (NT_STATUS_IS_OK(status)) {
3166 /* Note that here we set the *inital* delete on close flag,
3167 not the regular one. The magic gets handled in close. */
3168 fsp->initial_delete_on_close = True;
3179 return NT_STATUS_OK;
3182 NTSTATUS create_directory(connection_struct *conn, struct smb_request *req,
3183 struct smb_filename *smb_dname)
3188 status = SMB_VFS_CREATE_FILE(
3191 0, /* root_dir_fid */
3192 smb_dname, /* fname */
3193 FILE_READ_ATTRIBUTES, /* access_mask */
3194 FILE_SHARE_NONE, /* share_access */
3195 FILE_CREATE, /* create_disposition*/
3196 FILE_DIRECTORY_FILE, /* create_options */
3197 FILE_ATTRIBUTE_DIRECTORY, /* file_attributes */
3198 0, /* oplock_request */
3199 0, /* allocation_size */
3200 0, /* private_flags */
3206 if (NT_STATUS_IS_OK(status)) {
3207 close_file(req, fsp, NORMAL_CLOSE);
3213 /****************************************************************************
3214 Receive notification that one of our open files has been renamed by another
3216 ****************************************************************************/
3218 void msg_file_was_renamed(struct messaging_context *msg,
3221 struct server_id server_id,
3225 char *frm = (char *)data->data;
3227 const char *sharepath;
3228 const char *base_name;
3229 const char *stream_name;
3230 struct smb_filename *smb_fname = NULL;
3231 size_t sp_len, bn_len;
3233 struct smbd_server_connection *sconn =
3234 talloc_get_type_abort(private_data,
3235 struct smbd_server_connection);
3237 if (data->data == NULL
3238 || data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
3239 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3240 (int)data->length));
3244 /* Unpack the message. */
3245 pull_file_id_24(frm, &id);
3246 sharepath = &frm[24];
3247 sp_len = strlen(sharepath);
3248 base_name = sharepath + sp_len + 1;
3249 bn_len = strlen(base_name);
3250 stream_name = sharepath + sp_len + 1 + bn_len + 1;
3252 /* stream_name must always be NULL if there is no stream. */
3253 if (stream_name[0] == '\0') {
3257 smb_fname = synthetic_smb_fname(talloc_tos(), base_name,
3259 if (smb_fname == NULL) {
3263 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3265 sharepath, smb_fname_str_dbg(smb_fname),
3266 file_id_string_tos(&id)));
3268 for(fsp = file_find_di_first(sconn, id); fsp;
3269 fsp = file_find_di_next(fsp)) {
3270 if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
3272 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3273 fsp_fnum_dbg(fsp), fsp_str_dbg(fsp),
3274 smb_fname_str_dbg(smb_fname)));
3275 status = fsp_set_smb_fname(fsp, smb_fname);
3276 if (!NT_STATUS_IS_OK(status)) {
3281 /* Now we have the complete path we can work out if this is
3282 actually within this share and adjust newname accordingly. */
3283 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3284 "not sharepath %s) "
3285 "%s from %s -> %s\n",
3286 fsp->conn->connectpath,
3290 smb_fname_str_dbg(smb_fname)));
3294 TALLOC_FREE(smb_fname);
3299 * If a main file is opened for delete, all streams need to be checked for
3300 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3301 * If that works, delete them all by setting the delete on close and close.
3304 NTSTATUS open_streams_for_delete(connection_struct *conn,
3307 struct stream_struct *stream_info = NULL;
3308 files_struct **streams = NULL;
3310 unsigned int num_streams = 0;
3311 TALLOC_CTX *frame = talloc_stackframe();
3314 status = vfs_streaminfo(conn, NULL, fname, talloc_tos(),
3315 &num_streams, &stream_info);
3317 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
3318 || NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
3319 DEBUG(10, ("no streams around\n"));
3321 return NT_STATUS_OK;
3324 if (!NT_STATUS_IS_OK(status)) {
3325 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3326 nt_errstr(status)));
3330 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3333 if (num_streams == 0) {
3335 return NT_STATUS_OK;
3338 streams = talloc_array(talloc_tos(), files_struct *, num_streams);
3339 if (streams == NULL) {
3340 DEBUG(0, ("talloc failed\n"));
3341 status = NT_STATUS_NO_MEMORY;
3345 for (i=0; i<num_streams; i++) {
3346 struct smb_filename *smb_fname;
3348 if (strequal(stream_info[i].name, "::$DATA")) {
3353 smb_fname = synthetic_smb_fname(
3354 talloc_tos(), fname, stream_info[i].name, NULL);
3355 if (smb_fname == NULL) {
3356 status = NT_STATUS_NO_MEMORY;
3360 if (SMB_VFS_STAT(conn, smb_fname) == -1) {
3361 DEBUG(10, ("Unable to stat stream: %s\n",
3362 smb_fname_str_dbg(smb_fname)));
3365 status = SMB_VFS_CREATE_FILE(
3368 0, /* root_dir_fid */
3369 smb_fname, /* fname */
3370 DELETE_ACCESS, /* access_mask */
3371 (FILE_SHARE_READ | /* share_access */
3372 FILE_SHARE_WRITE | FILE_SHARE_DELETE),
3373 FILE_OPEN, /* create_disposition*/
3374 0, /* create_options */
3375 FILE_ATTRIBUTE_NORMAL, /* file_attributes */
3376 0, /* oplock_request */
3377 0, /* allocation_size */
3378 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* private_flags */
3381 &streams[i], /* result */
3384 if (!NT_STATUS_IS_OK(status)) {
3385 DEBUG(10, ("Could not open stream %s: %s\n",
3386 smb_fname_str_dbg(smb_fname),
3387 nt_errstr(status)));
3389 TALLOC_FREE(smb_fname);
3392 TALLOC_FREE(smb_fname);
3396 * don't touch the variable "status" beyond this point :-)
3399 for (i -= 1 ; i >= 0; i--) {
3400 if (streams[i] == NULL) {
3404 DEBUG(10, ("Closing stream # %d, %s\n", i,
3405 fsp_str_dbg(streams[i])));
3406 close_file(NULL, streams[i], NORMAL_CLOSE);
3414 /*********************************************************************
3415 Create a default ACL by inheriting from the parent. If no inheritance
3416 from the parent available, don't set anything. This will leave the actual
3417 permissions the new file or directory already got from the filesystem
3418 as the NT ACL when read.
3419 *********************************************************************/
3421 static NTSTATUS inherit_new_acl(files_struct *fsp)
3423 TALLOC_CTX *frame = talloc_stackframe();
3424 char *parent_name = NULL;
3425 struct security_descriptor *parent_desc = NULL;
3426 NTSTATUS status = NT_STATUS_OK;
3427 struct security_descriptor *psd = NULL;
3428 const struct dom_sid *owner_sid = NULL;
3429 const struct dom_sid *group_sid = NULL;
3430 uint32_t security_info_sent = (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL);
3431 struct security_token *token = fsp->conn->session_info->security_token;
3432 bool inherit_owner = lp_inherit_owner(SNUM(fsp->conn));
3433 bool inheritable_components = false;
3434 bool try_builtin_administrators = false;
3435 const struct dom_sid *BA_U_sid = NULL;
3436 const struct dom_sid *BA_G_sid = NULL;
3437 bool try_system = false;
3438 const struct dom_sid *SY_U_sid = NULL;
3439 const struct dom_sid *SY_G_sid = NULL;
3442 if (!parent_dirname(frame, fsp->fsp_name->base_name, &parent_name, NULL)) {
3444 return NT_STATUS_NO_MEMORY;
3447 status = SMB_VFS_GET_NT_ACL(fsp->conn,
3449 (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL),
3452 if (!NT_STATUS_IS_OK(status)) {
3457 inheritable_components = sd_has_inheritable_components(parent_desc,
3460 if (!inheritable_components && !inherit_owner) {
3462 /* Nothing to inherit and not setting owner. */
3463 return NT_STATUS_OK;
3466 /* Create an inherited descriptor from the parent. */
3468 if (DEBUGLEVEL >= 10) {
3469 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3470 fsp_str_dbg(fsp) ));
3471 NDR_PRINT_DEBUG(security_descriptor, parent_desc);
3474 /* Inherit from parent descriptor if "inherit owner" set. */
3475 if (inherit_owner) {
3476 owner_sid = parent_desc->owner_sid;
3477 group_sid = parent_desc->group_sid;
3480 if (owner_sid == NULL) {
3481 if (security_token_has_builtin_administrators(token)) {
3482 try_builtin_administrators = true;
3483 } else if (security_token_is_system(token)) {
3484 try_builtin_administrators = true;
3489 if (group_sid == NULL &&
3490 token->num_sids == PRIMARY_GROUP_SID_INDEX)
3492 if (security_token_is_system(token)) {
3493 try_builtin_administrators = true;
3498 if (try_builtin_administrators) {
3503 ok = sids_to_unixids(&global_sid_Builtin_Administrators, 1, &ids);
3507 BA_U_sid = &global_sid_Builtin_Administrators;
3508 BA_G_sid = &global_sid_Builtin_Administrators;
3511 BA_U_sid = &global_sid_Builtin_Administrators;
3514 BA_G_sid = &global_sid_Builtin_Administrators;
3527 ok = sids_to_unixids(&global_sid_System, 1, &ids);
3531 SY_U_sid = &global_sid_System;
3532 SY_G_sid = &global_sid_System;
3535 SY_U_sid = &global_sid_System;
3538 SY_G_sid = &global_sid_System;
3546 if (owner_sid == NULL) {
3547 owner_sid = BA_U_sid;
3550 if (owner_sid == NULL) {
3551 owner_sid = SY_U_sid;
3554 if (group_sid == NULL) {
3555 group_sid = SY_G_sid;
3558 if (try_system && group_sid == NULL) {
3559 group_sid = BA_G_sid;
3562 if (owner_sid == NULL) {
3563 owner_sid = &token->sids[PRIMARY_USER_SID_INDEX];
3565 if (group_sid == NULL) {
3566 if (token->num_sids == PRIMARY_GROUP_SID_INDEX) {
3567 group_sid = &token->sids[PRIMARY_USER_SID_INDEX];
3569 group_sid = &token->sids[PRIMARY_GROUP_SID_INDEX];
3573 status = se_create_child_secdesc(frame,
3580 if (!NT_STATUS_IS_OK(status)) {
3585 /* If inheritable_components == false,
3586 se_create_child_secdesc()
3587 creates a security desriptor with a NULL dacl
3588 entry, but with SEC_DESC_DACL_PRESENT. We need
3589 to remove that flag. */
3591 if (!inheritable_components) {
3592 security_info_sent &= ~SECINFO_DACL;
3593 psd->type &= ~SEC_DESC_DACL_PRESENT;
3596 if (DEBUGLEVEL >= 10) {
3597 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3598 fsp_str_dbg(fsp) ));
3599 NDR_PRINT_DEBUG(security_descriptor, psd);
3602 if (inherit_owner) {
3603 /* We need to be root to force this. */
3606 status = SMB_VFS_FSET_NT_ACL(fsp,
3609 if (inherit_owner) {
3617 * Wrapper around open_file_ntcreate and open_directory
3620 static NTSTATUS create_file_unixpath(connection_struct *conn,
3621 struct smb_request *req,
3622 struct smb_filename *smb_fname,
3623 uint32_t access_mask,
3624 uint32_t share_access,
3625 uint32_t create_disposition,
3626 uint32_t create_options,
3627 uint32_t file_attributes,
3628 uint32_t oplock_request,
3629 uint64_t allocation_size,
3630 uint32_t private_flags,
3631 struct security_descriptor *sd,
3632 struct ea_list *ea_list,
3634 files_struct **result,
3637 int info = FILE_WAS_OPENED;
3638 files_struct *base_fsp = NULL;
3639 files_struct *fsp = NULL;
3642 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3643 "file_attributes = 0x%x, share_access = 0x%x, "
3644 "create_disposition = 0x%x create_options = 0x%x "
3645 "oplock_request = 0x%x private_flags = 0x%x "
3646 "ea_list = 0x%p, sd = 0x%p, "
3648 (unsigned int)access_mask,
3649 (unsigned int)file_attributes,
3650 (unsigned int)share_access,
3651 (unsigned int)create_disposition,
3652 (unsigned int)create_options,
3653 (unsigned int)oplock_request,
3654 (unsigned int)private_flags,
3655 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3657 if (create_options & FILE_OPEN_BY_FILE_ID) {
3658 status = NT_STATUS_NOT_SUPPORTED;
3662 if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
3663 status = NT_STATUS_INVALID_PARAMETER;
3668 oplock_request |= INTERNAL_OPEN_ONLY;
3671 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3672 && (access_mask & DELETE_ACCESS)
3673 && !is_ntfs_stream_smb_fname(smb_fname)) {
3675 * We can't open a file with DELETE access if any of the
3676 * streams is open without FILE_SHARE_DELETE
3678 status = open_streams_for_delete(conn, smb_fname->base_name);
3680 if (!NT_STATUS_IS_OK(status)) {
3685 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
3686 !security_token_has_privilege(get_current_nttok(conn),
3687 SEC_PRIV_SECURITY)) {
3688 DEBUG(10, ("create_file_unixpath: open on %s "
3689 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3690 smb_fname_str_dbg(smb_fname)));
3691 status = NT_STATUS_PRIVILEGE_NOT_HELD;
3695 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3696 && is_ntfs_stream_smb_fname(smb_fname)
3697 && (!(private_flags & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
3698 uint32 base_create_disposition;
3699 struct smb_filename *smb_fname_base = NULL;
3701 if (create_options & FILE_DIRECTORY_FILE) {
3702 status = NT_STATUS_NOT_A_DIRECTORY;
3706 switch (create_disposition) {
3708 base_create_disposition = FILE_OPEN;
3711 base_create_disposition = FILE_OPEN_IF;
3715 /* Create an smb_filename with stream_name == NULL. */
3716 smb_fname_base = synthetic_smb_fname(talloc_tos(),
3717 smb_fname->base_name,
3719 if (smb_fname_base == NULL) {
3720 status = NT_STATUS_NO_MEMORY;
3724 if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
3725 DEBUG(10, ("Unable to stat stream: %s\n",
3726 smb_fname_str_dbg(smb_fname_base)));
3729 /* Open the base file. */
3730 status = create_file_unixpath(conn, NULL, smb_fname_base, 0,
3733 | FILE_SHARE_DELETE,
3734 base_create_disposition,
3735 0, 0, 0, 0, 0, NULL, NULL,
3737 TALLOC_FREE(smb_fname_base);
3739 if (!NT_STATUS_IS_OK(status)) {
3740 DEBUG(10, ("create_file_unixpath for base %s failed: "
3741 "%s\n", smb_fname->base_name,
3742 nt_errstr(status)));
3745 /* we don't need to low level fd */
3750 * If it's a request for a directory open, deal with it separately.
3753 if (create_options & FILE_DIRECTORY_FILE) {
3755 if (create_options & FILE_NON_DIRECTORY_FILE) {
3756 status = NT_STATUS_INVALID_PARAMETER;
3760 /* Can't open a temp directory. IFS kit test. */
3761 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
3762 (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
3763 status = NT_STATUS_INVALID_PARAMETER;
3768 * We will get a create directory here if the Win32
3769 * app specified a security descriptor in the
3770 * CreateDirectory() call.
3774 status = open_directory(
3775 conn, req, smb_fname, access_mask, share_access,
3776 create_disposition, create_options, file_attributes,
3781 * Ordinary file case.
3784 status = file_new(req, conn, &fsp);
3785 if(!NT_STATUS_IS_OK(status)) {
3789 status = fsp_set_smb_fname(fsp, smb_fname);
3790 if (!NT_STATUS_IS_OK(status)) {
3796 * We're opening the stream element of a
3797 * base_fsp we already opened. Set up the
3800 fsp->base_fsp = base_fsp;
3803 if (allocation_size) {
3804 fsp->initial_allocation_size = smb_roundup(fsp->conn,
3808 status = open_file_ntcreate(conn,
3820 if(!NT_STATUS_IS_OK(status)) {
3821 file_free(req, fsp);
3825 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
3827 /* A stream open never opens a directory */
3830 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3835 * Fail the open if it was explicitly a non-directory
3839 if (create_options & FILE_NON_DIRECTORY_FILE) {
3840 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3845 status = open_directory(
3846 conn, req, smb_fname, access_mask,
3847 share_access, create_disposition,
3848 create_options, file_attributes,
3853 if (!NT_STATUS_IS_OK(status)) {
3857 fsp->base_fsp = base_fsp;
3859 if ((ea_list != NULL) &&
3860 ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN))) {
3861 status = set_ea(conn, fsp, fsp->fsp_name, ea_list);
3862 if (!NT_STATUS_IS_OK(status)) {
3867 if (!fsp->is_directory && S_ISDIR(fsp->fsp_name->st.st_ex_mode)) {
3868 status = NT_STATUS_ACCESS_DENIED;
3872 /* Save the requested allocation size. */
3873 if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
3875 && (allocation_size > fsp->fsp_name->st.st_ex_size)) {
3876 fsp->initial_allocation_size = smb_roundup(
3877 fsp->conn, allocation_size);
3878 if (fsp->is_directory) {
3879 /* Can't set allocation size on a directory. */
3880 status = NT_STATUS_ACCESS_DENIED;
3883 if (vfs_allocate_file_space(
3884 fsp, fsp->initial_allocation_size) == -1) {
3885 status = NT_STATUS_DISK_FULL;
3889 fsp->initial_allocation_size = smb_roundup(
3890 fsp->conn, (uint64_t)fsp->fsp_name->st.st_ex_size);
3893 fsp->initial_allocation_size = 0;
3896 if ((info == FILE_WAS_CREATED) && lp_nt_acl_support(SNUM(conn)) &&
3897 fsp->base_fsp == NULL) {
3900 * According to the MS documentation, the only time the security
3901 * descriptor is applied to the opened file is iff we *created* the
3902 * file; an existing file stays the same.
3904 * Also, it seems (from observation) that you can open the file with
3905 * any access mask but you can still write the sd. We need to override
3906 * the granted access before we call set_sd
3907 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3910 uint32_t sec_info_sent;
3911 uint32_t saved_access_mask = fsp->access_mask;
3913 sec_info_sent = get_sec_info(sd);
3915 fsp->access_mask = FILE_GENERIC_ALL;
3917 if (sec_info_sent & (SECINFO_OWNER|
3921 status = set_sd(fsp, sd, sec_info_sent);
3924 fsp->access_mask = saved_access_mask;
3926 if (!NT_STATUS_IS_OK(status)) {
3929 } else if (lp_inherit_acls(SNUM(conn))) {
3930 /* Inherit from parent. Errors here are not fatal. */
3931 status = inherit_new_acl(fsp);
3932 if (!NT_STATUS_IS_OK(status)) {
3933 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3935 nt_errstr(status) ));
3940 DEBUG(10, ("create_file_unixpath: info=%d\n", info));
3943 if (pinfo != NULL) {
3947 smb_fname->st = fsp->fsp_name->st;
3949 return NT_STATUS_OK;
3952 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
3955 if (base_fsp && fsp->base_fsp == base_fsp) {
3957 * The close_file below will close
3962 close_file(req, fsp, ERROR_CLOSE);
3965 if (base_fsp != NULL) {
3966 close_file(req, base_fsp, ERROR_CLOSE);
3973 * Calculate the full path name given a relative fid.
3975 NTSTATUS get_relative_fid_filename(connection_struct *conn,
3976 struct smb_request *req,
3977 uint16_t root_dir_fid,
3978 const struct smb_filename *smb_fname,
3979 struct smb_filename **smb_fname_out)
3981 files_struct *dir_fsp;
3982 char *parent_fname = NULL;
3983 char *new_base_name = NULL;
3986 if (root_dir_fid == 0 || !smb_fname) {
3987 status = NT_STATUS_INTERNAL_ERROR;
3991 dir_fsp = file_fsp(req, root_dir_fid);
3993 if (dir_fsp == NULL) {
3994 status = NT_STATUS_INVALID_HANDLE;
3998 if (is_ntfs_stream_smb_fname(dir_fsp->fsp_name)) {
3999 status = NT_STATUS_INVALID_HANDLE;
4003 if (!dir_fsp->is_directory) {
4006 * Check to see if this is a mac fork of some kind.
4009 if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
4010 is_ntfs_stream_smb_fname(smb_fname)) {
4011 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
4016 we need to handle the case when we get a
4017 relative open relative to a file and the
4018 pathname is blank - this is a reopen!
4019 (hint from demyn plantenberg)
4022 status = NT_STATUS_INVALID_HANDLE;
4026 if (ISDOT(dir_fsp->fsp_name->base_name)) {
4028 * We're at the toplevel dir, the final file name
4029 * must not contain ./, as this is filtered out
4030 * normally by srvstr_get_path and unix_convert
4031 * explicitly rejects paths containing ./.
4033 parent_fname = talloc_strdup(talloc_tos(), "");
4034 if (parent_fname == NULL) {
4035 status = NT_STATUS_NO_MEMORY;
4039 size_t dir_name_len = strlen(dir_fsp->fsp_name->base_name);
4042 * Copy in the base directory name.
4045 parent_fname = talloc_array(talloc_tos(), char,
4047 if (parent_fname == NULL) {
4048 status = NT_STATUS_NO_MEMORY;
4051 memcpy(parent_fname, dir_fsp->fsp_name->base_name,
4055 * Ensure it ends in a '/'.
4056 * We used TALLOC_SIZE +2 to add space for the '/'.
4060 && (parent_fname[dir_name_len-1] != '\\')
4061 && (parent_fname[dir_name_len-1] != '/')) {
4062 parent_fname[dir_name_len] = '/';
4063 parent_fname[dir_name_len+1] = '\0';
4067 new_base_name = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
4068 smb_fname->base_name);
4069 if (new_base_name == NULL) {
4070 status = NT_STATUS_NO_MEMORY;
4074 status = filename_convert(req,
4076 req->flags2 & FLAGS2_DFS_PATHNAMES,
4081 if (!NT_STATUS_IS_OK(status)) {
4086 TALLOC_FREE(parent_fname);
4087 TALLOC_FREE(new_base_name);
4091 NTSTATUS create_file_default(connection_struct *conn,
4092 struct smb_request *req,
4093 uint16_t root_dir_fid,
4094 struct smb_filename *smb_fname,
4095 uint32_t access_mask,
4096 uint32_t share_access,
4097 uint32_t create_disposition,
4098 uint32_t create_options,
4099 uint32_t file_attributes,
4100 uint32_t oplock_request,
4101 uint64_t allocation_size,
4102 uint32_t private_flags,
4103 struct security_descriptor *sd,
4104 struct ea_list *ea_list,
4105 files_struct **result,
4108 int info = FILE_WAS_OPENED;
4109 files_struct *fsp = NULL;
4111 bool stream_name = false;
4113 DEBUG(10,("create_file: access_mask = 0x%x "
4114 "file_attributes = 0x%x, share_access = 0x%x, "
4115 "create_disposition = 0x%x create_options = 0x%x "
4116 "oplock_request = 0x%x "
4117 "private_flags = 0x%x "
4118 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
4120 (unsigned int)access_mask,
4121 (unsigned int)file_attributes,
4122 (unsigned int)share_access,
4123 (unsigned int)create_disposition,
4124 (unsigned int)create_options,
4125 (unsigned int)oplock_request,
4126 (unsigned int)private_flags,
4127 (unsigned int)root_dir_fid,
4128 ea_list, sd, smb_fname_str_dbg(smb_fname)));
4131 * Calculate the filename from the root_dir_if if necessary.
4134 if (root_dir_fid != 0) {
4135 struct smb_filename *smb_fname_out = NULL;
4136 status = get_relative_fid_filename(conn, req, root_dir_fid,
4137 smb_fname, &smb_fname_out);
4138 if (!NT_STATUS_IS_OK(status)) {
4141 smb_fname = smb_fname_out;
4145 * Check to see if this is a mac fork of some kind.
4148 stream_name = is_ntfs_stream_smb_fname(smb_fname);
4150 enum FAKE_FILE_TYPE fake_file_type;
4152 fake_file_type = is_fake_file(smb_fname);
4154 if (fake_file_type != FAKE_FILE_TYPE_NONE) {
4157 * Here we go! support for changing the disk quotas
4160 * We need to fake up to open this MAGIC QUOTA file
4161 * and return a valid FID.
4163 * w2k close this file directly after openening xp
4164 * also tries a QUERY_FILE_INFO on the file and then
4167 status = open_fake_file(req, conn, req->vuid,
4168 fake_file_type, smb_fname,
4170 if (!NT_STATUS_IS_OK(status)) {
4174 ZERO_STRUCT(smb_fname->st);
4178 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
4179 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
4184 if (is_ntfs_default_stream_smb_fname(smb_fname)) {
4186 smb_fname->stream_name = NULL;
4187 /* We have to handle this error here. */
4188 if (create_options & FILE_DIRECTORY_FILE) {
4189 status = NT_STATUS_NOT_A_DIRECTORY;
4192 if (lp_posix_pathnames()) {
4193 ret = SMB_VFS_LSTAT(conn, smb_fname);
4195 ret = SMB_VFS_STAT(conn, smb_fname);
4198 if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
4199 status = NT_STATUS_FILE_IS_A_DIRECTORY;
4204 status = create_file_unixpath(
4205 conn, req, smb_fname, access_mask, share_access,
4206 create_disposition, create_options, file_attributes,
4207 oplock_request, allocation_size, private_flags,
4211 if (!NT_STATUS_IS_OK(status)) {
4216 DEBUG(10, ("create_file: info=%d\n", info));
4219 if (pinfo != NULL) {
4222 return NT_STATUS_OK;
4225 DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
4228 close_file(req, fsp, ERROR_CLOSE);