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"
34 extern const struct generic_mapping file_generic_mapping;
36 struct deferred_open_record {
37 bool delayed_for_oplocks;
42 /****************************************************************************
43 If the requester wanted DELETE_ACCESS and was rejected because
44 the file ACL didn't include DELETE_ACCESS, see if the parent ACL
46 ****************************************************************************/
48 static bool parent_override_delete(connection_struct *conn,
49 const struct smb_filename *smb_fname,
51 uint32_t rejected_mask)
53 if ((access_mask & DELETE_ACCESS) &&
54 (rejected_mask & DELETE_ACCESS) &&
55 can_delete_file_in_directory(conn, smb_fname)) {
61 /****************************************************************************
62 Check if we have open rights.
63 ****************************************************************************/
65 NTSTATUS smbd_check_access_rights(struct connection_struct *conn,
66 const struct smb_filename *smb_fname,
69 /* Check if we have rights to open. */
71 struct security_descriptor *sd = NULL;
72 uint32_t rejected_share_access;
73 uint32_t rejected_mask = access_mask;
75 rejected_share_access = access_mask & ~(conn->share_access);
77 if (rejected_share_access) {
78 DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
80 (unsigned int)access_mask,
81 smb_fname_str_dbg(smb_fname),
82 (unsigned int)rejected_share_access ));
83 return NT_STATUS_ACCESS_DENIED;
86 if (get_current_uid(conn) == (uid_t)0) {
87 /* I'm sorry sir, I didn't know you were root... */
88 DEBUG(10,("smbd_check_access_rights: root override "
89 "on %s. Granting 0x%x\n",
90 smb_fname_str_dbg(smb_fname),
91 (unsigned int)access_mask ));
95 if ((access_mask & DELETE_ACCESS) && !lp_acl_check_permissions(SNUM(conn))) {
96 DEBUG(10,("smbd_check_access_rights: not checking ACL "
97 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
98 smb_fname_str_dbg(smb_fname),
99 (unsigned int)access_mask ));
103 if (access_mask == DELETE_ACCESS &&
104 VALID_STAT(smb_fname->st) &&
105 S_ISLNK(smb_fname->st.st_ex_mode)) {
106 /* We can always delete a symlink. */
107 DEBUG(10,("smbd_check_access_rights: not checking ACL "
108 "on DELETE_ACCESS on symlink %s.\n",
109 smb_fname_str_dbg(smb_fname) ));
113 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
118 if (!NT_STATUS_IS_OK(status)) {
119 DEBUG(10, ("smbd_check_access_rights: Could not get acl "
121 smb_fname_str_dbg(smb_fname),
124 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
132 * Never test FILE_READ_ATTRIBUTES. se_access_check() also takes care of
133 * owner WRITE_DAC and READ_CONTROL.
135 status = se_access_check(sd,
136 get_current_nttok(conn),
137 (access_mask & ~FILE_READ_ATTRIBUTES),
140 DEBUG(10,("smbd_check_access_rights: file %s requesting "
141 "0x%x returning 0x%x (%s)\n",
142 smb_fname_str_dbg(smb_fname),
143 (unsigned int)access_mask,
144 (unsigned int)rejected_mask,
145 nt_errstr(status) ));
147 if (!NT_STATUS_IS_OK(status)) {
148 if (DEBUGLEVEL >= 10) {
149 DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
150 smb_fname_str_dbg(smb_fname) ));
151 NDR_PRINT_DEBUG(security_descriptor, sd);
157 if (NT_STATUS_IS_OK(status) ||
158 !NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
162 /* Here we know status == NT_STATUS_ACCESS_DENIED. */
166 if ((access_mask & FILE_WRITE_ATTRIBUTES) &&
167 (rejected_mask & FILE_WRITE_ATTRIBUTES) &&
168 !lp_store_dos_attributes(SNUM(conn)) &&
169 (lp_map_readonly(SNUM(conn)) ||
170 lp_map_archive(SNUM(conn)) ||
171 lp_map_hidden(SNUM(conn)) ||
172 lp_map_system(SNUM(conn)))) {
173 rejected_mask &= ~FILE_WRITE_ATTRIBUTES;
175 DEBUG(10,("smbd_check_access_rights: "
177 "FILE_WRITE_ATTRIBUTES "
179 smb_fname_str_dbg(smb_fname)));
182 if (parent_override_delete(conn,
186 /* Were we trying to do an open
187 * for delete and didn't get DELETE
188 * access (only) ? Check if the
189 * directory allows DELETE_CHILD.
191 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
194 rejected_mask &= ~DELETE_ACCESS;
196 DEBUG(10,("smbd_check_access_rights: "
200 smb_fname_str_dbg(smb_fname)));
203 if (rejected_mask != 0) {
204 return NT_STATUS_ACCESS_DENIED;
209 static NTSTATUS check_parent_access(struct connection_struct *conn,
210 struct smb_filename *smb_fname,
211 uint32_t access_mask)
214 char *parent_dir = NULL;
215 struct security_descriptor *parent_sd = NULL;
216 uint32_t access_granted = 0;
218 if (!parent_dirname(talloc_tos(),
219 smb_fname->base_name,
222 return NT_STATUS_NO_MEMORY;
225 if (get_current_uid(conn) == (uid_t)0) {
226 /* I'm sorry sir, I didn't know you were root... */
227 DEBUG(10,("check_parent_access: root override "
228 "on %s. Granting 0x%x\n",
229 smb_fname_str_dbg(smb_fname),
230 (unsigned int)access_mask ));
234 status = SMB_VFS_GET_NT_ACL(conn,
239 if (!NT_STATUS_IS_OK(status)) {
240 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
241 "%s with error %s\n",
248 * Never test FILE_READ_ATTRIBUTES. se_access_check() also takes care of
249 * owner WRITE_DAC and READ_CONTROL.
251 status = se_access_check(parent_sd,
252 get_current_nttok(conn),
253 (access_mask & ~FILE_READ_ATTRIBUTES),
255 if(!NT_STATUS_IS_OK(status)) {
256 DEBUG(5,("check_parent_access: access check "
257 "on directory %s for "
258 "path %s for mask 0x%x returned (0x%x) %s\n",
260 smb_fname->base_name,
263 nt_errstr(status) ));
270 /****************************************************************************
271 fd support routines - attempt to do a dos_open.
272 ****************************************************************************/
274 static NTSTATUS fd_open(struct connection_struct *conn,
279 struct smb_filename *smb_fname = fsp->fsp_name;
280 NTSTATUS status = NT_STATUS_OK;
284 * Never follow symlinks on a POSIX client. The
285 * client should be doing this.
288 if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
293 fsp->fh->fd = SMB_VFS_OPEN(conn, smb_fname, fsp, flags, mode);
294 if (fsp->fh->fd == -1) {
295 int posix_errno = errno;
297 #if defined(ENOTSUP) && defined(OSF1)
298 /* handle special Tru64 errno */
299 if (errno == ENOTSUP) {
304 /* fix broken NetBSD errno */
305 if (errno == EFTYPE) {
309 /* fix broken FreeBSD errno */
310 if (errno == EMLINK) {
313 #endif /* O_NOFOLLOW */
314 status = map_nt_error_from_unix(posix_errno);
315 if (errno == EMFILE) {
316 static time_t last_warned = 0L;
318 if (time((time_t *) NULL) > last_warned) {
319 DEBUG(0,("Too many open files, unable "
320 "to open more! smbd's max "
322 lp_max_open_files()));
323 last_warned = time((time_t *) NULL);
329 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
330 smb_fname_str_dbg(smb_fname), flags, (int)mode, fsp->fh->fd,
331 (fsp->fh->fd == -1) ? strerror(errno) : "" ));
336 /****************************************************************************
337 Close the file associated with a fsp.
338 ****************************************************************************/
340 NTSTATUS fd_close(files_struct *fsp)
347 if (fsp->fh->fd == -1) {
348 return NT_STATUS_OK; /* What we used to call a stat open. */
350 if (fsp->fh->ref_count > 1) {
351 return NT_STATUS_OK; /* Shared handle. Only close last reference. */
354 ret = SMB_VFS_CLOSE(fsp);
357 return map_nt_error_from_unix(errno);
362 /****************************************************************************
363 Change the ownership of a file to that of the parent directory.
364 Do this by fd if possible.
365 ****************************************************************************/
367 void change_file_owner_to_parent(connection_struct *conn,
368 const char *inherit_from_dir,
371 struct smb_filename *smb_fname_parent = NULL;
375 status = create_synthetic_smb_fname(talloc_tos(), inherit_from_dir,
376 NULL, NULL, &smb_fname_parent);
377 if (!NT_STATUS_IS_OK(status)) {
381 ret = SMB_VFS_STAT(conn, smb_fname_parent);
383 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
384 "directory %s. Error was %s\n",
385 smb_fname_str_dbg(smb_fname_parent),
387 TALLOC_FREE(smb_fname_parent);
391 if (smb_fname_parent->st.st_ex_uid == fsp->fsp_name->st.st_ex_uid) {
392 /* Already this uid - no need to change. */
393 DEBUG(10,("change_file_owner_to_parent: file %s "
394 "is already owned by uid %d\n",
396 (int)fsp->fsp_name->st.st_ex_uid ));
397 TALLOC_FREE(smb_fname_parent);
402 ret = SMB_VFS_FCHOWN(fsp, smb_fname_parent->st.st_ex_uid, (gid_t)-1);
405 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
406 "file %s to parent directory uid %u. Error "
407 "was %s\n", fsp_str_dbg(fsp),
408 (unsigned int)smb_fname_parent->st.st_ex_uid,
411 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
412 "parent directory uid %u.\n", fsp_str_dbg(fsp),
413 (unsigned int)smb_fname_parent->st.st_ex_uid));
414 /* Ensure the uid entry is updated. */
415 fsp->fsp_name->st.st_ex_uid = smb_fname_parent->st.st_ex_uid;
418 TALLOC_FREE(smb_fname_parent);
421 NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
422 const char *inherit_from_dir,
424 SMB_STRUCT_STAT *psbuf)
426 struct smb_filename *smb_fname_parent = NULL;
427 struct smb_filename *smb_fname_cwd = NULL;
428 char *saved_dir = NULL;
429 TALLOC_CTX *ctx = talloc_tos();
430 NTSTATUS status = NT_STATUS_OK;
433 status = create_synthetic_smb_fname(ctx, inherit_from_dir, NULL, NULL,
435 if (!NT_STATUS_IS_OK(status)) {
439 ret = SMB_VFS_STAT(conn, smb_fname_parent);
441 status = map_nt_error_from_unix(errno);
442 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
443 "directory %s. Error was %s\n",
444 smb_fname_str_dbg(smb_fname_parent),
449 /* We've already done an lstat into psbuf, and we know it's a
450 directory. If we can cd into the directory and the dev/ino
451 are the same then we can safely chown without races as
452 we're locking the directory in place by being in it. This
453 should work on any UNIX (thanks tridge :-). JRA.
456 saved_dir = vfs_GetWd(ctx,conn);
458 status = map_nt_error_from_unix(errno);
459 DEBUG(0,("change_dir_owner_to_parent: failed to get "
460 "current working directory. Error was %s\n",
465 /* Chdir into the new path. */
466 if (vfs_ChDir(conn, fname) == -1) {
467 status = map_nt_error_from_unix(errno);
468 DEBUG(0,("change_dir_owner_to_parent: failed to change "
469 "current working directory to %s. Error "
470 "was %s\n", fname, strerror(errno) ));
474 status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
476 if (!NT_STATUS_IS_OK(status)) {
480 ret = SMB_VFS_STAT(conn, smb_fname_cwd);
482 status = map_nt_error_from_unix(errno);
483 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
484 "directory '.' (%s) Error was %s\n",
485 fname, strerror(errno)));
489 /* Ensure we're pointing at the same place. */
490 if (smb_fname_cwd->st.st_ex_dev != psbuf->st_ex_dev ||
491 smb_fname_cwd->st.st_ex_ino != psbuf->st_ex_ino) {
492 DEBUG(0,("change_dir_owner_to_parent: "
493 "device/inode on directory %s changed. "
494 "Refusing to chown !\n", fname ));
495 status = NT_STATUS_ACCESS_DENIED;
499 if (smb_fname_parent->st.st_ex_uid == smb_fname_cwd->st.st_ex_uid) {
500 /* Already this uid - no need to change. */
501 DEBUG(10,("change_dir_owner_to_parent: directory %s "
502 "is already owned by uid %d\n",
504 (int)smb_fname_cwd->st.st_ex_uid ));
505 status = NT_STATUS_OK;
510 ret = SMB_VFS_LCHOWN(conn, ".", smb_fname_parent->st.st_ex_uid,
514 status = map_nt_error_from_unix(errno);
515 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
516 "directory %s to parent directory uid %u. "
517 "Error was %s\n", fname,
518 (unsigned int)smb_fname_parent->st.st_ex_uid,
521 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
522 "directory %s to parent directory uid %u.\n",
523 fname, (unsigned int)smb_fname_parent->st.st_ex_uid ));
524 /* Ensure the uid entry is updated. */
525 psbuf->st_ex_uid = smb_fname_parent->st.st_ex_uid;
529 vfs_ChDir(conn,saved_dir);
531 TALLOC_FREE(smb_fname_parent);
532 TALLOC_FREE(smb_fname_cwd);
536 /****************************************************************************
538 ****************************************************************************/
540 static NTSTATUS open_file(files_struct *fsp,
541 connection_struct *conn,
542 struct smb_request *req,
543 const char *parent_dir,
546 uint32 access_mask, /* client requested access mask. */
547 uint32 open_access_mask) /* what we're actually using in the open. */
549 struct smb_filename *smb_fname = fsp->fsp_name;
550 NTSTATUS status = NT_STATUS_OK;
551 int accmode = (flags & O_ACCMODE);
552 int local_flags = flags;
553 bool file_existed = VALID_STAT(fsp->fsp_name->st);
554 bool file_created = false;
559 /* Check permissions */
562 * This code was changed after seeing a client open request
563 * containing the open mode of (DENY_WRITE/read-only) with
564 * the 'create if not exist' bit set. The previous code
565 * would fail to open the file read only on a read-only share
566 * as it was checking the flags parameter directly against O_RDONLY,
567 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
571 if (!CAN_WRITE(conn)) {
572 /* It's a read-only share - fail if we wanted to write. */
573 if(accmode != O_RDONLY || (flags & O_TRUNC) || (flags & O_APPEND)) {
574 DEBUG(3,("Permission denied opening %s\n",
575 smb_fname_str_dbg(smb_fname)));
576 return NT_STATUS_ACCESS_DENIED;
577 } else if(flags & O_CREAT) {
578 /* We don't want to write - but we must make sure that
579 O_CREAT doesn't create the file if we have write
580 access into the directory.
582 flags &= ~(O_CREAT|O_EXCL);
583 local_flags &= ~(O_CREAT|O_EXCL);
588 * This little piece of insanity is inspired by the
589 * fact that an NT client can open a file for O_RDONLY,
590 * but set the create disposition to FILE_EXISTS_TRUNCATE.
591 * If the client *can* write to the file, then it expects to
592 * truncate the file, even though it is opening for readonly.
593 * Quicken uses this stupid trick in backup file creation...
594 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
595 * for helping track this one down. It didn't bite us in 2.0.x
596 * as we always opened files read-write in that release. JRA.
599 if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
600 DEBUG(10,("open_file: truncate requested on read-only open "
601 "for file %s\n", smb_fname_str_dbg(smb_fname)));
602 local_flags = (flags & ~O_ACCMODE)|O_RDWR;
605 if ((open_access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
606 (!file_existed && (local_flags & O_CREAT)) ||
607 ((local_flags & O_TRUNC) == O_TRUNC) ) {
612 * We can't actually truncate here as the file may be locked.
613 * open_file_ntcreate will take care of the truncate later. JRA.
616 local_flags &= ~O_TRUNC;
618 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
620 * We would block on opening a FIFO with no one else on the
621 * other end. Do what we used to do and add O_NONBLOCK to the
625 if (file_existed && S_ISFIFO(smb_fname->st.st_ex_mode)) {
626 local_flags |= O_NONBLOCK;
630 /* Don't create files with Microsoft wildcard characters. */
633 * wildcard characters are allowed in stream names
634 * only test the basefilename
636 wild = fsp->base_fsp->fsp_name->base_name;
638 wild = smb_fname->base_name;
640 if ((local_flags & O_CREAT) && !file_existed &&
642 return NT_STATUS_OBJECT_NAME_INVALID;
645 /* Can we access this file ? */
646 if (!fsp->base_fsp) {
647 /* Only do this check on non-stream open. */
649 status = smbd_check_access_rights(conn,
652 } else if (local_flags & O_CREAT){
653 status = check_parent_access(conn,
657 /* File didn't exist and no O_CREAT. */
658 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
660 if (!NT_STATUS_IS_OK(status)) {
661 DEBUG(10,("open_file: "
665 "smbd_check_access_rights" :
666 "check_parent_access",
667 smb_fname_str_dbg(smb_fname),
668 nt_errstr(status) ));
673 /* Actually do the open */
674 status = fd_open(conn, fsp, local_flags, unx_mode);
675 if (!NT_STATUS_IS_OK(status)) {
676 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
677 "(flags=%d)\n", smb_fname_str_dbg(smb_fname),
678 nt_errstr(status),local_flags,flags));
682 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
684 /* If we have an fd, this stat should succeed. */
685 DEBUG(0,("Error doing fstat on open file %s "
687 smb_fname_str_dbg(smb_fname),
689 status = map_nt_error_from_unix(errno);
694 if ((local_flags & O_CREAT) && !file_existed) {
699 fsp->fh->fd = -1; /* What we used to call a stat open. */
701 /* File must exist for a stat open. */
702 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
705 status = smbd_check_access_rights(conn,
709 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND) &&
711 S_ISLNK(smb_fname->st.st_ex_mode)) {
712 /* This is a POSIX stat open for delete
713 * or rename on a symlink that points
715 DEBUG(10,("open_file: allowing POSIX "
716 "open on bad symlink %s\n",
717 smb_fname_str_dbg(smb_fname)));
718 status = NT_STATUS_OK;
721 if (!NT_STATUS_IS_OK(status)) {
722 DEBUG(10,("open_file: "
723 "smbd_check_access_rights on file "
725 smb_fname_str_dbg(smb_fname),
726 nt_errstr(status) ));
733 bool need_re_stat = false;
734 /* Do all inheritance work after we've
735 done a successful stat call and filled
736 in the stat struct in fsp->fsp_name. */
738 /* Inherit the ACL if required */
739 if (lp_inherit_perms(SNUM(conn))) {
740 inherit_access_posix_acl(conn, parent_dir,
741 smb_fname->base_name,
746 /* Change the owner if required. */
747 if (lp_inherit_owner(SNUM(conn))) {
748 change_file_owner_to_parent(conn, parent_dir,
756 if (fsp->fh->fd == -1) {
757 ret = SMB_VFS_STAT(conn, smb_fname);
759 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
760 /* If we have an fd, this stat should succeed. */
762 DEBUG(0,("Error doing fstat on open file %s "
764 smb_fname_str_dbg(smb_fname),
770 notify_fname(conn, NOTIFY_ACTION_ADDED,
771 FILE_NOTIFY_CHANGE_FILE_NAME,
772 smb_fname->base_name);
777 * POSIX allows read-only opens of directories. We don't
778 * want to do this (we use a different code path for this)
779 * so catch a directory open and return an EISDIR. JRA.
782 if(S_ISDIR(smb_fname->st.st_ex_mode)) {
785 return NT_STATUS_FILE_IS_A_DIRECTORY;
788 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
789 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
790 fsp->file_pid = req ? req->smbpid : 0;
791 fsp->can_lock = True;
792 fsp->can_read = ((access_mask & FILE_READ_DATA) != 0);
795 ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) != 0);
796 fsp->print_file = NULL;
797 fsp->modified = False;
798 fsp->sent_oplock_break = NO_BREAK_SENT;
799 fsp->is_directory = False;
800 if (conn->aio_write_behind_list &&
801 is_in_path(smb_fname->base_name, conn->aio_write_behind_list,
802 conn->case_sensitive)) {
803 fsp->aio_write_behind = True;
806 fsp->wcp = NULL; /* Write cache pointer. */
808 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
809 conn->session_info->unix_info->unix_name,
810 smb_fname_str_dbg(smb_fname),
811 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
812 conn->num_files_open));
818 /****************************************************************************
819 Check if we can open a file with a share mode.
820 Returns True if conflict, False if not.
821 ****************************************************************************/
823 static bool share_conflict(struct share_mode_entry *entry,
827 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
828 "entry->share_access = 0x%x, "
829 "entry->private_options = 0x%x\n",
830 (unsigned int)entry->access_mask,
831 (unsigned int)entry->share_access,
832 (unsigned int)entry->private_options));
834 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
835 (unsigned int)access_mask, (unsigned int)share_access));
837 if ((entry->access_mask & (FILE_WRITE_DATA|
841 DELETE_ACCESS)) == 0) {
842 DEBUG(10,("share_conflict: No conflict due to "
843 "entry->access_mask = 0x%x\n",
844 (unsigned int)entry->access_mask ));
848 if ((access_mask & (FILE_WRITE_DATA|
852 DELETE_ACCESS)) == 0) {
853 DEBUG(10,("share_conflict: No conflict due to "
854 "access_mask = 0x%x\n",
855 (unsigned int)access_mask ));
859 #if 1 /* JRA TEST - Superdebug. */
860 #define CHECK_MASK(num, am, right, sa, share) \
861 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
862 (unsigned int)(num), (unsigned int)(am), \
863 (unsigned int)(right), (unsigned int)(am)&(right) )); \
864 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
865 (unsigned int)(num), (unsigned int)(sa), \
866 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
867 if (((am) & (right)) && !((sa) & (share))) { \
868 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
869 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
870 (unsigned int)(share) )); \
874 #define CHECK_MASK(num, am, right, sa, share) \
875 if (((am) & (right)) && !((sa) & (share))) { \
876 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
877 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
878 (unsigned int)(share) )); \
883 CHECK_MASK(1, entry->access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
884 share_access, FILE_SHARE_WRITE);
885 CHECK_MASK(2, access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
886 entry->share_access, FILE_SHARE_WRITE);
888 CHECK_MASK(3, entry->access_mask, FILE_READ_DATA | FILE_EXECUTE,
889 share_access, FILE_SHARE_READ);
890 CHECK_MASK(4, access_mask, FILE_READ_DATA | FILE_EXECUTE,
891 entry->share_access, FILE_SHARE_READ);
893 CHECK_MASK(5, entry->access_mask, DELETE_ACCESS,
894 share_access, FILE_SHARE_DELETE);
895 CHECK_MASK(6, access_mask, DELETE_ACCESS,
896 entry->share_access, FILE_SHARE_DELETE);
898 DEBUG(10,("share_conflict: No conflict.\n"));
902 #if defined(DEVELOPER)
903 static void validate_my_share_entries(struct smbd_server_connection *sconn,
905 struct share_mode_entry *share_entry)
907 struct server_id self = messaging_server_id(sconn->msg_ctx);
910 if (!serverid_equal(&self, &share_entry->pid)) {
914 if (is_deferred_open_entry(share_entry) &&
915 !open_was_deferred(sconn, share_entry->op_mid)) {
916 char *str = talloc_asprintf(talloc_tos(),
917 "Got a deferred entry without a request: "
919 share_mode_str(talloc_tos(), num, share_entry));
923 if (!is_valid_share_mode_entry(share_entry)) {
927 fsp = file_find_dif(sconn, share_entry->id,
928 share_entry->share_file_id);
930 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
931 share_mode_str(talloc_tos(), num, share_entry) ));
932 smb_panic("validate_my_share_entries: Cannot match a "
933 "share entry with an open file\n");
936 if (is_deferred_open_entry(share_entry)) {
940 if ((share_entry->op_type == NO_OPLOCK) &&
941 (fsp->oplock_type == FAKE_LEVEL_II_OPLOCK)) {
942 /* Someone has already written to it, but I haven't yet
947 if (((uint16)fsp->oplock_type) != share_entry->op_type) {
956 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
957 share_mode_str(talloc_tos(), num, share_entry) ));
958 str = talloc_asprintf(talloc_tos(),
959 "validate_my_share_entries: "
960 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
961 fsp->fsp_name->base_name,
962 (unsigned int)fsp->oplock_type,
963 (unsigned int)share_entry->op_type );
969 bool is_stat_open(uint32 access_mask)
971 return (access_mask &&
972 ((access_mask & ~(SYNCHRONIZE_ACCESS| FILE_READ_ATTRIBUTES|
973 FILE_WRITE_ATTRIBUTES))==0) &&
974 ((access_mask & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|
975 FILE_WRITE_ATTRIBUTES)) != 0));
978 /****************************************************************************
979 Deal with share modes
980 Invarient: Share mode must be locked on entry and exit.
981 Returns -1 on error, or number of share modes on success (may be zero).
982 ****************************************************************************/
984 static NTSTATUS open_mode_check(connection_struct *conn,
985 struct share_mode_lock *lck,
989 uint32 create_options,
994 if(lck->data->num_share_modes == 0) {
998 /* A delete on close prohibits everything */
1000 if (is_delete_on_close_set(lck, name_hash)) {
1002 * Check the delete on close token
1003 * is valid. It could have been left
1004 * after a server crash.
1006 for(i = 0; i < lck->data->num_share_modes; i++) {
1007 if (!share_mode_stale_pid(lck->data, i)) {
1009 *file_existed = true;
1011 return NT_STATUS_DELETE_PENDING;
1014 return NT_STATUS_OK;
1017 if (is_stat_open(access_mask)) {
1018 /* Stat open that doesn't trigger oplock breaks or share mode
1019 * checks... ! JRA. */
1020 return NT_STATUS_OK;
1024 * Check if the share modes will give us access.
1027 #if defined(DEVELOPER)
1028 for(i = 0; i < lck->data->num_share_modes; i++) {
1029 validate_my_share_entries(conn->sconn, i,
1030 &lck->data->share_modes[i]);
1034 /* Now we check the share modes, after any oplock breaks. */
1035 for(i = 0; i < lck->data->num_share_modes; i++) {
1037 if (!is_valid_share_mode_entry(&lck->data->share_modes[i])) {
1041 /* someone else has a share lock on it, check to see if we can
1043 if (share_conflict(&lck->data->share_modes[i],
1044 access_mask, share_access)) {
1046 if (share_mode_stale_pid(lck->data, i)) {
1050 *file_existed = true;
1052 return NT_STATUS_SHARING_VIOLATION;
1056 if (lck->data->num_share_modes != 0) {
1057 *file_existed = true;
1060 return NT_STATUS_OK;
1063 static bool is_delete_request(files_struct *fsp) {
1064 return ((fsp->access_mask == DELETE_ACCESS) &&
1065 (fsp->oplock_type == NO_OPLOCK));
1069 * Send a break message to the oplock holder and delay the open for
1073 static NTSTATUS send_break_message(files_struct *fsp,
1074 struct share_mode_entry *exclusive,
1079 char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
1081 DEBUG(10, ("Sending break request to PID %s\n",
1082 procid_str_static(&exclusive->pid)));
1083 exclusive->op_mid = mid;
1085 /* Create the message. */
1086 share_mode_entry_to_message(msg, exclusive);
1088 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1089 don't want this set in the share mode struct pointed to by lck. */
1091 if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
1092 SSVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET,
1093 exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
1096 status = messaging_send_buf(fsp->conn->sconn->msg_ctx, exclusive->pid,
1097 MSG_SMB_BREAK_REQUEST,
1099 MSG_SMB_SHARE_MODE_ENTRY_SIZE);
1100 if (!NT_STATUS_IS_OK(status)) {
1101 DEBUG(3, ("Could not send oplock break message: %s\n",
1102 nt_errstr(status)));
1109 * Return share_mode_entry pointers for :
1110 * 1). Batch oplock entry.
1111 * 2). Batch or exclusive oplock entry (may be identical to #1).
1112 * bool have_level2_oplock
1113 * bool have_no_oplock.
1114 * Do internal consistency checks on the share mode for a file.
1117 static void find_oplock_types(files_struct *fsp,
1119 const struct share_mode_lock *lck,
1120 struct share_mode_entry **pp_batch,
1121 struct share_mode_entry **pp_ex_or_batch,
1123 bool *got_no_oplock)
1128 *pp_ex_or_batch = NULL;
1129 *got_level2 = false;
1130 *got_no_oplock = false;
1132 /* Ignore stat or internal opens, as is done in
1133 delay_for_batch_oplocks() and
1134 delay_for_exclusive_oplocks().
1136 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1140 for (i=0; i<lck->data->num_share_modes; i++) {
1141 if (!is_valid_share_mode_entry(&lck->data->share_modes[i])) {
1145 if (lck->data->share_modes[i].op_type == NO_OPLOCK &&
1146 is_stat_open(lck->data->share_modes[i].access_mask)) {
1147 /* We ignore stat opens in the table - they
1148 always have NO_OPLOCK and never get or
1149 cause breaks. JRA. */
1153 if (BATCH_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
1154 /* batch - can only be one. */
1155 if (share_mode_stale_pid(lck->data, i)) {
1156 DEBUG(10, ("Found stale batch oplock\n"));
1159 if (*pp_ex_or_batch || *pp_batch || *got_level2 || *got_no_oplock) {
1160 smb_panic("Bad batch oplock entry.");
1162 *pp_batch = &lck->data->share_modes[i];
1165 if (EXCLUSIVE_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
1166 if (share_mode_stale_pid(lck->data, i)) {
1167 DEBUG(10, ("Found stale duplicate oplock\n"));
1170 /* Exclusive or batch - can only be one. */
1171 if (*pp_ex_or_batch || *got_level2 || *got_no_oplock) {
1172 smb_panic("Bad exclusive or batch oplock entry.");
1174 *pp_ex_or_batch = &lck->data->share_modes[i];
1177 if (LEVEL_II_OPLOCK_TYPE(lck->data->share_modes[i].op_type)) {
1178 if (*pp_batch || *pp_ex_or_batch) {
1179 if (share_mode_stale_pid(lck->data, i)) {
1180 DEBUG(10, ("Found stale LevelII "
1184 smb_panic("Bad levelII oplock entry.");
1189 if (lck->data->share_modes[i].op_type == NO_OPLOCK) {
1190 if (*pp_batch || *pp_ex_or_batch) {
1191 if (share_mode_stale_pid(lck->data, i)) {
1192 DEBUG(10, ("Found stale NO_OPLOCK "
1196 smb_panic("Bad no oplock entry.");
1198 *got_no_oplock = true;
1203 static bool delay_for_batch_oplocks(files_struct *fsp,
1206 struct share_mode_entry *batch_entry)
1208 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1211 if (batch_entry == NULL) {
1215 /* Found a batch oplock */
1216 send_break_message(fsp, batch_entry, mid, oplock_request);
1220 static bool delay_for_exclusive_oplocks(files_struct *fsp,
1223 struct share_mode_entry *ex_entry)
1227 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1230 if (ex_entry == NULL) {
1234 /* Found an exclusive or batch oplock */
1236 delay_it = is_delete_request(fsp) ?
1237 BATCH_OPLOCK_TYPE(ex_entry->op_type) : true;
1243 send_break_message(fsp, ex_entry, mid, oplock_request);
1247 static bool file_has_brlocks(files_struct *fsp)
1249 struct byte_range_lock *br_lck;
1251 br_lck = brl_get_locks_readonly(fsp);
1255 return br_lck->num_locks > 0 ? true : false;
1258 static void grant_fsp_oplock_type(files_struct *fsp,
1260 bool got_level2_oplock,
1261 bool got_a_none_oplock)
1263 bool allow_level2 = (global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
1264 lp_level2_oplocks(SNUM(fsp->conn));
1266 /* Start by granting what the client asked for,
1267 but ensure no SAMBA_PRIVATE bits can be set. */
1268 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
1270 if (oplock_request & INTERNAL_OPEN_ONLY) {
1271 /* No oplocks on internal open. */
1272 fsp->oplock_type = NO_OPLOCK;
1273 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1274 fsp->oplock_type, fsp_str_dbg(fsp)));
1278 if (lp_locking(fsp->conn->params) && file_has_brlocks(fsp)) {
1279 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1281 fsp->oplock_type = NO_OPLOCK;
1284 if (is_stat_open(fsp->access_mask)) {
1285 /* Leave the value already set. */
1286 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1287 fsp->oplock_type, fsp_str_dbg(fsp)));
1292 * Match what was requested (fsp->oplock_type) with
1293 * what was found in the existing share modes.
1296 if (got_a_none_oplock) {
1297 fsp->oplock_type = NO_OPLOCK;
1298 } else if (got_level2_oplock) {
1299 if (fsp->oplock_type == NO_OPLOCK ||
1300 fsp->oplock_type == FAKE_LEVEL_II_OPLOCK) {
1301 /* Store a level2 oplock, but don't tell the client */
1302 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1304 fsp->oplock_type = LEVEL_II_OPLOCK;
1307 /* All share_mode_entries are placeholders or deferred.
1308 * Silently upgrade to fake levelII if the client didn't
1309 * ask for an oplock. */
1310 if (fsp->oplock_type == NO_OPLOCK) {
1311 /* Store a level2 oplock, but don't tell the client */
1312 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1317 * Don't grant level2 to clients that don't want them
1318 * or if we've turned them off.
1320 if (fsp->oplock_type == LEVEL_II_OPLOCK && !allow_level2) {
1321 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1324 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1325 fsp->oplock_type, fsp_str_dbg(fsp)));
1328 bool request_timed_out(struct timeval request_time,
1329 struct timeval timeout)
1331 struct timeval now, end_time;
1333 end_time = timeval_sum(&request_time, &timeout);
1334 return (timeval_compare(&end_time, &now) < 0);
1337 /****************************************************************************
1338 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1339 ****************************************************************************/
1341 static void defer_open(struct share_mode_lock *lck,
1342 struct timeval request_time,
1343 struct timeval timeout,
1344 struct smb_request *req,
1345 struct deferred_open_record *state)
1347 struct server_id self = messaging_server_id(req->sconn->msg_ctx);
1349 /* Paranoia check */
1354 for (i=0; i<lck->data->num_share_modes; i++) {
1355 struct share_mode_entry *e = &lck->data->share_modes[i];
1357 if (is_deferred_open_entry(e) &&
1358 serverid_equal(&self, &e->pid) &&
1359 (e->op_mid == req->mid)) {
1360 DEBUG(0, ("Trying to defer an already deferred "
1361 "request: mid=%llu, exiting\n",
1362 (unsigned long long)req->mid));
1363 exit_server("attempt to defer a deferred request");
1368 /* End paranoia check */
1370 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1371 "open entry for mid %llu\n",
1372 (unsigned int)request_time.tv_sec,
1373 (unsigned int)request_time.tv_usec,
1374 (unsigned long long)req->mid));
1376 if (!push_deferred_open_message_smb(req, request_time, timeout,
1377 state->id, (char *)state, sizeof(*state))) {
1378 exit_server("push_deferred_open_message_smb failed");
1381 add_deferred_open(lck, req->mid, request_time, self, state->id);
1386 /****************************************************************************
1387 On overwrite open ensure that the attributes match.
1388 ****************************************************************************/
1390 bool open_match_attributes(connection_struct *conn,
1391 uint32 old_dos_attr,
1392 uint32 new_dos_attr,
1393 mode_t existing_unx_mode,
1394 mode_t new_unx_mode,
1395 mode_t *returned_unx_mode)
1397 uint32 noarch_old_dos_attr, noarch_new_dos_attr;
1399 noarch_old_dos_attr = (old_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1400 noarch_new_dos_attr = (new_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1402 if((noarch_old_dos_attr == 0 && noarch_new_dos_attr != 0) ||
1403 (noarch_old_dos_attr != 0 && ((noarch_old_dos_attr & noarch_new_dos_attr) == noarch_old_dos_attr))) {
1404 *returned_unx_mode = new_unx_mode;
1406 *returned_unx_mode = (mode_t)0;
1409 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1410 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1411 "returned_unx_mode = 0%o\n",
1412 (unsigned int)old_dos_attr,
1413 (unsigned int)existing_unx_mode,
1414 (unsigned int)new_dos_attr,
1415 (unsigned int)*returned_unx_mode ));
1417 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1418 if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1419 if ((old_dos_attr & FILE_ATTRIBUTE_SYSTEM) &&
1420 !(new_dos_attr & FILE_ATTRIBUTE_SYSTEM)) {
1424 if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1425 if ((old_dos_attr & FILE_ATTRIBUTE_HIDDEN) &&
1426 !(new_dos_attr & FILE_ATTRIBUTE_HIDDEN)) {
1433 /****************************************************************************
1434 Special FCB or DOS processing in the case of a sharing violation.
1435 Try and find a duplicated file handle.
1436 ****************************************************************************/
1438 static NTSTATUS fcb_or_dos_open(struct smb_request *req,
1439 connection_struct *conn,
1440 files_struct *fsp_to_dup_into,
1441 const struct smb_filename *smb_fname,
1446 uint32 share_access,
1447 uint32 create_options)
1451 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1452 "file %s.\n", smb_fname_str_dbg(smb_fname)));
1454 for(fsp = file_find_di_first(conn->sconn, id); fsp;
1455 fsp = file_find_di_next(fsp)) {
1457 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1458 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1459 "access_mask = 0x%x\n", fsp_str_dbg(fsp),
1460 fsp->fh->fd, (unsigned long long)fsp->vuid,
1461 (unsigned int)fsp->file_pid,
1462 (unsigned int)fsp->fh->private_options,
1463 (unsigned int)fsp->access_mask ));
1465 if (fsp->fh->fd != -1 &&
1466 fsp->vuid == vuid &&
1467 fsp->file_pid == file_pid &&
1468 (fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
1469 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
1470 (fsp->access_mask & FILE_WRITE_DATA) &&
1471 strequal(fsp->fsp_name->base_name, smb_fname->base_name) &&
1472 strequal(fsp->fsp_name->stream_name,
1473 smb_fname->stream_name)) {
1474 DEBUG(10,("fcb_or_dos_open: file match\n"));
1480 return NT_STATUS_NOT_FOUND;
1483 /* quite an insane set of semantics ... */
1484 if (is_executable(smb_fname->base_name) &&
1485 (fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
1486 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1487 return NT_STATUS_INVALID_PARAMETER;
1490 /* We need to duplicate this fsp. */
1491 return dup_file_fsp(req, fsp, access_mask, share_access,
1492 create_options, fsp_to_dup_into);
1495 static void schedule_defer_open(struct share_mode_lock *lck,
1496 struct timeval request_time,
1497 struct smb_request *req)
1499 struct deferred_open_record state;
1501 /* This is a relative time, added to the absolute
1502 request_time value to get the absolute timeout time.
1503 Note that if this is the second or greater time we enter
1504 this codepath for this particular request mid then
1505 request_time is left as the absolute time of the *first*
1506 time this request mid was processed. This is what allows
1507 the request to eventually time out. */
1509 struct timeval timeout;
1511 /* Normally the smbd we asked should respond within
1512 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1513 * the client did, give twice the timeout as a safety
1514 * measure here in case the other smbd is stuck
1515 * somewhere else. */
1517 timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
1519 /* Nothing actually uses state.delayed_for_oplocks
1520 but it's handy to differentiate in debug messages
1521 between a 30 second delay due to oplock break, and
1522 a 1 second delay for share mode conflicts. */
1524 state.delayed_for_oplocks = True;
1525 state.async_open = false;
1526 state.id = lck->data->id;
1528 if (!request_timed_out(request_time, timeout)) {
1529 defer_open(lck, request_time, timeout, req, &state);
1533 /****************************************************************************
1534 Reschedule an open call that went asynchronous.
1535 ****************************************************************************/
1537 static void schedule_async_open(struct timeval request_time,
1538 struct smb_request *req)
1540 struct deferred_open_record state;
1541 struct timeval timeout;
1543 timeout = timeval_set(20, 0);
1546 state.delayed_for_oplocks = false;
1547 state.async_open = true;
1549 if (!request_timed_out(request_time, timeout)) {
1550 defer_open(NULL, request_time, timeout, req, &state);
1554 /****************************************************************************
1555 Work out what access_mask to use from what the client sent us.
1556 ****************************************************************************/
1558 static NTSTATUS smbd_calculate_maximum_allowed_access(
1559 connection_struct *conn,
1560 const struct smb_filename *smb_fname,
1561 uint32_t *p_access_mask)
1563 struct security_descriptor *sd;
1564 uint32_t access_granted;
1567 if (get_current_uid(conn) == (uid_t)0) {
1568 *p_access_mask |= FILE_GENERIC_ALL;
1569 return NT_STATUS_OK;
1572 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
1577 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
1579 * File did not exist
1581 *p_access_mask = FILE_GENERIC_ALL;
1582 return NT_STATUS_OK;
1584 if (!NT_STATUS_IS_OK(status)) {
1585 DEBUG(10,("smbd_calculate_access_mask: "
1586 "Could not get acl on file %s: %s\n",
1587 smb_fname_str_dbg(smb_fname),
1588 nt_errstr(status)));
1589 return NT_STATUS_ACCESS_DENIED;
1593 * Never test FILE_READ_ATTRIBUTES. se_access_check()
1594 * also takes care of owner WRITE_DAC and READ_CONTROL.
1596 status = se_access_check(sd,
1597 get_current_nttok(conn),
1598 (*p_access_mask & ~FILE_READ_ATTRIBUTES),
1603 if (!NT_STATUS_IS_OK(status)) {
1604 DEBUG(10, ("smbd_calculate_access_mask: "
1605 "Access denied on file %s: "
1606 "when calculating maximum access\n",
1607 smb_fname_str_dbg(smb_fname)));
1608 return NT_STATUS_ACCESS_DENIED;
1610 *p_access_mask = (access_granted | FILE_READ_ATTRIBUTES);
1611 return NT_STATUS_OK;
1614 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
1615 const struct smb_filename *smb_fname,
1616 uint32_t access_mask,
1617 uint32_t *access_mask_out)
1620 uint32_t orig_access_mask = access_mask;
1621 uint32_t rejected_share_access;
1624 * Convert GENERIC bits to specific bits.
1627 se_map_generic(&access_mask, &file_generic_mapping);
1629 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1630 if (access_mask & MAXIMUM_ALLOWED_ACCESS) {
1632 status = smbd_calculate_maximum_allowed_access(
1633 conn, smb_fname, &access_mask);
1635 if (!NT_STATUS_IS_OK(status)) {
1639 access_mask &= conn->share_access;
1642 rejected_share_access = access_mask & ~(conn->share_access);
1644 if (rejected_share_access) {
1645 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1646 "file %s: rejected by share access mask[0x%08X] "
1647 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1648 smb_fname_str_dbg(smb_fname),
1650 orig_access_mask, access_mask,
1651 rejected_share_access));
1652 return NT_STATUS_ACCESS_DENIED;
1655 *access_mask_out = access_mask;
1656 return NT_STATUS_OK;
1659 /****************************************************************************
1660 Remove the deferred open entry under lock.
1661 ****************************************************************************/
1663 void remove_deferred_open_entry(struct file_id id, uint64_t mid,
1664 struct server_id pid)
1666 struct share_mode_lock *lck = get_existing_share_mode_lock(
1669 DEBUG(0, ("could not get share mode lock\n"));
1672 del_deferred_open_entry(lck, mid, pid);
1676 /****************************************************************************
1677 Return true if this is a state pointer to an asynchronous create.
1678 ****************************************************************************/
1680 bool is_deferred_open_async(const void *ptr)
1682 const struct deferred_open_record *state = (const struct deferred_open_record *)ptr;
1684 return state->async_open;
1687 /****************************************************************************
1688 Open a file with a share mode. Passed in an already created files_struct *.
1689 ****************************************************************************/
1691 static NTSTATUS open_file_ntcreate(connection_struct *conn,
1692 struct smb_request *req,
1693 uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
1694 uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
1695 uint32 create_disposition, /* FILE_OPEN_IF etc. */
1696 uint32 create_options, /* options such as delete on close. */
1697 uint32 new_dos_attributes, /* attributes used for new file. */
1698 int oplock_request, /* internal Samba oplock codes. */
1699 /* Information (FILE_EXISTS etc.) */
1700 uint32_t private_flags, /* Samba specific flags. */
1704 struct smb_filename *smb_fname = fsp->fsp_name;
1707 bool file_existed = VALID_STAT(smb_fname->st);
1708 bool def_acl = False;
1709 bool posix_open = False;
1710 bool new_file_created = False;
1711 bool clear_ads = false;
1712 NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
1713 mode_t new_unx_mode = (mode_t)0;
1714 mode_t unx_mode = (mode_t)0;
1716 uint32 existing_dos_attributes = 0;
1717 struct timeval request_time = timeval_zero();
1718 struct share_mode_lock *lck = NULL;
1719 uint32 open_access_mask = access_mask;
1723 if (conn->printer) {
1725 * Printers are handled completely differently.
1726 * Most of the passed parameters are ignored.
1730 *pinfo = FILE_WAS_CREATED;
1733 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1734 smb_fname_str_dbg(smb_fname)));
1737 DEBUG(0,("open_file_ntcreate: printer open without "
1738 "an SMB request!\n"));
1739 return NT_STATUS_INTERNAL_ERROR;
1742 return print_spool_open(fsp, smb_fname->base_name,
1746 if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
1748 return NT_STATUS_NO_MEMORY;
1751 if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1753 unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
1754 new_dos_attributes = 0;
1756 /* Windows allows a new file to be created and
1757 silently removes a FILE_ATTRIBUTE_DIRECTORY
1758 sent by the client. Do the same. */
1760 new_dos_attributes &= ~FILE_ATTRIBUTE_DIRECTORY;
1762 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1764 unx_mode = unix_mode(conn, new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
1765 smb_fname, parent_dir);
1768 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1769 "access_mask=0x%x share_access=0x%x "
1770 "create_disposition = 0x%x create_options=0x%x "
1771 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1772 smb_fname_str_dbg(smb_fname), new_dos_attributes,
1773 access_mask, share_access, create_disposition,
1774 create_options, (unsigned int)unx_mode, oplock_request,
1775 (unsigned int)private_flags));
1777 if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
1778 DEBUG(0, ("No smb request but not an internal only open!\n"));
1779 return NT_STATUS_INTERNAL_ERROR;
1783 * Only non-internal opens can be deferred at all
1788 if (get_deferred_open_message_state(req,
1791 /* Remember the absolute time of the original
1792 request with this mid. We'll use it later to
1793 see if this has timed out. */
1795 /* If it was an async create retry, the file
1798 if (is_deferred_open_async(ptr)) {
1799 SET_STAT_INVALID(smb_fname->st);
1800 file_existed = false;
1802 struct deferred_open_record *state = (struct deferred_open_record *)ptr;
1803 /* Remove the deferred open entry under lock. */
1804 remove_deferred_open_entry(
1805 state->id, req->mid,
1806 messaging_server_id(req->sconn->msg_ctx));
1809 /* Ensure we don't reprocess this message. */
1810 remove_deferred_open_message_smb(req->sconn, req->mid);
1815 new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
1817 existing_dos_attributes = dos_mode(conn, smb_fname);
1821 /* ignore any oplock requests if oplocks are disabled */
1822 if (!lp_oplocks(SNUM(conn)) ||
1823 IS_VETO_OPLOCK_PATH(conn, smb_fname->base_name)) {
1824 /* Mask off everything except the private Samba bits. */
1825 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
1828 /* this is for OS/2 long file names - say we don't support them */
1829 if (!lp_posix_pathnames() && strstr(smb_fname->base_name,".+,;=[].")) {
1830 /* OS/2 Workplace shell fix may be main code stream in a later
1832 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
1834 if (use_nt_status()) {
1835 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1837 return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
1840 switch( create_disposition ) {
1842 * Currently we're using FILE_SUPERSEDE as the same as
1843 * FILE_OVERWRITE_IF but they really are
1844 * different. FILE_SUPERSEDE deletes an existing file
1845 * (requiring delete access) then recreates it.
1847 case FILE_SUPERSEDE:
1848 /* If file exists replace/overwrite. If file doesn't
1850 flags2 |= (O_CREAT | O_TRUNC);
1854 case FILE_OVERWRITE_IF:
1855 /* If file exists replace/overwrite. If file doesn't
1857 flags2 |= (O_CREAT | O_TRUNC);
1862 /* If file exists open. If file doesn't exist error. */
1863 if (!file_existed) {
1864 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
1865 "requested for file %s and file "
1867 smb_fname_str_dbg(smb_fname)));
1869 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1873 case FILE_OVERWRITE:
1874 /* If file exists overwrite. If file doesn't exist
1876 if (!file_existed) {
1877 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
1878 "requested for file %s and file "
1880 smb_fname_str_dbg(smb_fname) ));
1882 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1889 /* If file exists error. If file doesn't exist
1892 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
1893 "requested for file %s and file "
1894 "already exists.\n",
1895 smb_fname_str_dbg(smb_fname)));
1896 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
1901 return map_nt_error_from_unix(errno);
1903 flags2 |= (O_CREAT|O_EXCL);
1907 /* If file exists open. If file doesn't exist
1913 return NT_STATUS_INVALID_PARAMETER;
1916 /* We only care about matching attributes on file exists and
1919 if (!posix_open && file_existed && ((create_disposition == FILE_OVERWRITE) ||
1920 (create_disposition == FILE_OVERWRITE_IF))) {
1921 if (!open_match_attributes(conn, existing_dos_attributes,
1923 smb_fname->st.st_ex_mode,
1924 unx_mode, &new_unx_mode)) {
1925 DEBUG(5,("open_file_ntcreate: attributes missmatch "
1926 "for file %s (%x %x) (0%o, 0%o)\n",
1927 smb_fname_str_dbg(smb_fname),
1928 existing_dos_attributes,
1930 (unsigned int)smb_fname->st.st_ex_mode,
1931 (unsigned int)unx_mode ));
1933 return NT_STATUS_ACCESS_DENIED;
1937 status = smbd_calculate_access_mask(conn, smb_fname,
1940 if (!NT_STATUS_IS_OK(status)) {
1941 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
1942 "on file %s returned %s\n",
1943 smb_fname_str_dbg(smb_fname), nt_errstr(status)));
1947 open_access_mask = access_mask;
1949 if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1950 open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
1953 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
1954 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname),
1958 * Note that we ignore the append flag as append does not
1959 * mean the same thing under DOS and Unix.
1962 if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
1963 (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1964 /* DENY_DOS opens are always underlying read-write on the
1965 file handle, no matter what the requested access mask
1967 if ((private_flags & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
1968 access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|FILE_READ_EA|FILE_EXECUTE)) {
1978 * Currently we only look at FILE_WRITE_THROUGH for create options.
1982 if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
1987 if (posix_open && (access_mask & FILE_APPEND_DATA)) {
1991 if (!posix_open && !CAN_WRITE(conn)) {
1993 * We should really return a permission denied error if either
1994 * O_CREAT or O_TRUNC are set, but for compatibility with
1995 * older versions of Samba we just AND them out.
1997 flags2 &= ~(O_CREAT|O_TRUNC);
2001 * Ensure we can't write on a read-only share or file.
2004 if (flags != O_RDONLY && file_existed &&
2005 (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
2006 DEBUG(5,("open_file_ntcreate: write access requested for "
2007 "file %s on read only %s\n",
2008 smb_fname_str_dbg(smb_fname),
2009 !CAN_WRITE(conn) ? "share" : "file" ));
2011 return NT_STATUS_ACCESS_DENIED;
2014 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
2015 fsp->share_access = share_access;
2016 fsp->fh->private_options = private_flags;
2017 fsp->access_mask = open_access_mask; /* We change this to the
2018 * requested access_mask after
2019 * the open is done. */
2020 fsp->posix_open = posix_open;
2022 /* Ensure no SAMBA_PRIVATE bits can be set. */
2023 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
2025 if (timeval_is_zero(&request_time)) {
2026 request_time = fsp->open_time;
2030 struct share_mode_entry *batch_entry = NULL;
2031 struct share_mode_entry *exclusive_entry = NULL;
2032 bool got_level2_oplock = false;
2033 bool got_a_none_oplock = false;
2036 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
2037 id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
2039 lck = get_share_mode_lock(talloc_tos(), id,
2041 smb_fname, &old_write_time);
2043 DEBUG(0, ("Could not get share mode lock\n"));
2044 return NT_STATUS_SHARING_VIOLATION;
2047 /* Get the types we need to examine. */
2048 find_oplock_types(fsp,
2054 &got_a_none_oplock);
2056 /* First pass - send break only on batch oplocks. */
2057 if ((req != NULL) &&
2058 delay_for_batch_oplocks(fsp,
2062 schedule_defer_open(lck, request_time, req);
2064 return NT_STATUS_SHARING_VIOLATION;
2067 /* Use the client requested access mask here, not the one we
2069 status = open_mode_check(conn, lck, fsp->name_hash,
2070 access_mask, share_access,
2071 create_options, &file_existed);
2073 if (NT_STATUS_IS_OK(status)) {
2074 /* We might be going to allow this open. Check oplock
2076 /* Second pass - send break for both batch or
2077 * exclusive oplocks. */
2078 if ((req != NULL) &&
2079 delay_for_exclusive_oplocks(
2084 schedule_defer_open(lck, request_time, req);
2086 return NT_STATUS_SHARING_VIOLATION;
2090 if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
2091 /* DELETE_PENDING is not deferred for a second */
2096 grant_fsp_oplock_type(fsp,
2101 if (!NT_STATUS_IS_OK(status)) {
2102 uint32 can_access_mask;
2103 bool can_access = True;
2105 SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
2107 /* Check if this can be done with the deny_dos and fcb
2110 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
2111 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
2113 DEBUG(0, ("DOS open without an SMB "
2116 return NT_STATUS_INTERNAL_ERROR;
2119 /* Use the client requested access mask here,
2120 * not the one we open with. */
2121 status = fcb_or_dos_open(req,
2132 if (NT_STATUS_IS_OK(status)) {
2135 *pinfo = FILE_WAS_OPENED;
2137 return NT_STATUS_OK;
2142 * This next line is a subtlety we need for
2143 * MS-Access. If a file open will fail due to share
2144 * permissions and also for security (access) reasons,
2145 * we need to return the access failed error, not the
2146 * share error. We can't open the file due to kernel
2147 * oplock deadlock (it's possible we failed above on
2148 * the open_mode_check()) so use a userspace check.
2151 if (flags & O_RDWR) {
2152 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
2153 } else if (flags & O_WRONLY) {
2154 can_access_mask = FILE_WRITE_DATA;
2156 can_access_mask = FILE_READ_DATA;
2159 if (((can_access_mask & FILE_WRITE_DATA) &&
2160 !CAN_WRITE(conn)) ||
2161 !NT_STATUS_IS_OK(smbd_check_access_rights(conn,
2162 smb_fname, can_access_mask))) {
2167 * If we're returning a share violation, ensure we
2168 * cope with the braindead 1 second delay.
2171 if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
2172 lp_defer_sharing_violations()) {
2173 struct timeval timeout;
2174 struct deferred_open_record state;
2177 /* this is a hack to speed up torture tests
2179 timeout_usecs = lp_parm_int(SNUM(conn),
2180 "smbd","sharedelay",
2181 SHARING_VIOLATION_USEC_WAIT);
2183 /* This is a relative time, added to the absolute
2184 request_time value to get the absolute timeout time.
2185 Note that if this is the second or greater time we enter
2186 this codepath for this particular request mid then
2187 request_time is left as the absolute time of the *first*
2188 time this request mid was processed. This is what allows
2189 the request to eventually time out. */
2191 timeout = timeval_set(0, timeout_usecs);
2193 /* Nothing actually uses state.delayed_for_oplocks
2194 but it's handy to differentiate in debug messages
2195 between a 30 second delay due to oplock break, and
2196 a 1 second delay for share mode conflicts. */
2198 state.delayed_for_oplocks = False;
2199 state.async_open = false;
2203 && !request_timed_out(request_time,
2205 defer_open(lck, request_time, timeout,
2213 * We have detected a sharing violation here
2214 * so return the correct error code
2216 status = NT_STATUS_SHARING_VIOLATION;
2218 status = NT_STATUS_ACCESS_DENIED;
2224 * We exit this block with the share entry *locked*.....
2228 SMB_ASSERT(!file_existed || (lck != NULL));
2231 * Ensure we pay attention to default ACLs on directories if required.
2234 if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
2235 (def_acl = directory_has_default_acl(conn, parent_dir))) {
2236 unx_mode = (0777 & lp_create_mask(SNUM(conn)));
2239 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2240 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2241 (unsigned int)flags, (unsigned int)flags2,
2242 (unsigned int)unx_mode, (unsigned int)access_mask,
2243 (unsigned int)open_access_mask));
2246 * open_file strips any O_TRUNC flags itself.
2249 fsp_open = open_file(fsp, conn, req, parent_dir,
2250 flags|flags2, unx_mode, access_mask,
2253 if (!NT_STATUS_IS_OK(fsp_open)) {
2254 if (NT_STATUS_EQUAL(fsp_open, NT_STATUS_RETRY)) {
2255 schedule_async_open(request_time, req);
2261 if (!file_existed) {
2262 struct share_mode_entry *batch_entry = NULL;
2263 struct share_mode_entry *exclusive_entry = NULL;
2264 bool got_level2_oplock = false;
2265 bool got_a_none_oplock = false;
2266 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
2269 * Deal with the race condition where two smbd's detect the
2270 * file doesn't exist and do the create at the same time. One
2271 * of them will win and set a share mode, the other (ie. this
2272 * one) should check if the requested share mode for this
2273 * create is allowed.
2277 * Now the file exists and fsp is successfully opened,
2278 * fsp->dev and fsp->inode are valid and should replace the
2279 * dev=0,inode=0 from a non existent file. Spotted by
2280 * Nadav Danieli <nadavd@exanet.com>. JRA.
2285 lck = get_share_mode_lock(talloc_tos(), id,
2287 smb_fname, &old_write_time);
2290 DEBUG(0, ("open_file_ntcreate: Could not get share "
2291 "mode lock for %s\n",
2292 smb_fname_str_dbg(smb_fname)));
2294 return NT_STATUS_SHARING_VIOLATION;
2297 /* Get the types we need to examine. */
2298 find_oplock_types(fsp,
2304 &got_a_none_oplock);
2306 /* First pass - send break only on batch oplocks. */
2307 if ((req != NULL) &&
2308 delay_for_batch_oplocks(fsp,
2312 schedule_defer_open(lck, request_time, req);
2315 return NT_STATUS_SHARING_VIOLATION;
2318 status = open_mode_check(conn, lck, fsp->name_hash,
2319 access_mask, share_access,
2320 create_options, &file_existed);
2322 if (NT_STATUS_IS_OK(status)) {
2323 /* We might be going to allow this open. Check oplock
2325 /* Second pass - send break for both batch or
2326 * exclusive oplocks. */
2327 if ((req != NULL) &&
2328 delay_for_exclusive_oplocks(
2333 schedule_defer_open(lck, request_time, req);
2336 return NT_STATUS_SHARING_VIOLATION;
2340 if (!NT_STATUS_IS_OK(status)) {
2341 struct deferred_open_record state;
2343 state.delayed_for_oplocks = False;
2344 state.async_open = false;
2347 /* Do it all over again immediately. In the second
2348 * round we will find that the file existed and handle
2349 * the DELETE_PENDING and FCB cases correctly. No need
2350 * to duplicate the code here. Essentially this is a
2351 * "goto top of this function", but don't tell
2355 defer_open(lck, request_time, timeval_zero(),
2363 grant_fsp_oplock_type(fsp,
2369 * We exit this block with the share entry *locked*.....
2374 SMB_ASSERT(lck != NULL);
2376 /* Delete streams if create_disposition requires it */
2377 if (file_existed && clear_ads &&
2378 !is_ntfs_stream_smb_fname(smb_fname)) {
2379 status = delete_all_streams(conn, smb_fname->base_name);
2380 if (!NT_STATUS_IS_OK(status)) {
2387 /* note that we ignore failure for the following. It is
2388 basically a hack for NFS, and NFS will never set one of
2389 these only read them. Nobody but Samba can ever set a deny
2390 mode and we have already checked our more authoritative
2391 locking database for permission to set this deny mode. If
2392 the kernel refuses the operations then the kernel is wrong.
2393 note that GPFS supports it as well - jmcd */
2395 if (fsp->fh->fd != -1) {
2397 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
2398 if(ret_flock == -1 ){
2403 return NT_STATUS_SHARING_VIOLATION;
2408 * At this point onwards, we can guarentee that the share entry
2409 * is locked, whether we created the file or not, and that the
2410 * deny mode is compatible with all current opens.
2414 * If requested, truncate the file.
2417 if (file_existed && (flags2&O_TRUNC)) {
2419 * We are modifying the file after open - update the stat
2422 if ((SMB_VFS_FTRUNCATE(fsp, 0) == -1) ||
2423 (SMB_VFS_FSTAT(fsp, &smb_fname->st)==-1)) {
2424 status = map_nt_error_from_unix(errno);
2432 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2433 * but we don't have to store this - just ignore it on access check.
2435 if (conn->sconn->using_smb2) {
2437 * SMB2 doesn't return it (according to Microsoft tests).
2438 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2439 * File created with access = 0x7 (Read, Write, Delete)
2440 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2442 fsp->access_mask = access_mask;
2444 /* But SMB1 does. */
2445 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2449 /* stat opens on existing files don't get oplocks. */
2450 if (is_stat_open(open_access_mask)) {
2451 fsp->oplock_type = NO_OPLOCK;
2454 if (flags2 & O_TRUNC) {
2455 info = FILE_WAS_OVERWRITTEN;
2457 info = FILE_WAS_OPENED;
2460 info = FILE_WAS_CREATED;
2468 * Setup the oplock info in both the shared memory and
2472 status = set_file_oplock(fsp, fsp->oplock_type);
2473 if (!NT_STATUS_IS_OK(status)) {
2475 * Could not get the kernel oplock or there are byte-range
2476 * locks on the file.
2478 fsp->oplock_type = NO_OPLOCK;
2481 set_share_mode(lck, fsp, get_current_uid(conn),
2485 /* Handle strange delete on close create semantics. */
2486 if (create_options & FILE_DELETE_ON_CLOSE) {
2488 status = can_set_delete_on_close(fsp, new_dos_attributes);
2490 if (!NT_STATUS_IS_OK(status)) {
2491 /* Remember to delete the mode we just added. */
2492 del_share_mode(lck, fsp);
2497 /* Note that here we set the *inital* delete on close flag,
2498 not the regular one. The magic gets handled in close. */
2499 fsp->initial_delete_on_close = True;
2502 if (info == FILE_WAS_OVERWRITTEN
2503 || info == FILE_WAS_CREATED
2504 || info == FILE_WAS_SUPERSEDED) {
2505 new_file_created = True;
2508 if (new_file_created) {
2509 /* Files should be initially set as archive */
2510 if (lp_map_archive(SNUM(conn)) ||
2511 lp_store_dos_attributes(SNUM(conn))) {
2513 if (file_set_dosmode(conn, smb_fname,
2514 new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
2515 parent_dir, true) == 0) {
2516 unx_mode = smb_fname->st.st_ex_mode;
2522 /* Determine sparse flag. */
2524 /* POSIX opens are sparse by default. */
2525 fsp->is_sparse = true;
2527 fsp->is_sparse = (file_existed &&
2528 (existing_dos_attributes & FILE_ATTRIBUTE_SPARSE));
2532 * Take care of inherited ACLs on created files - if default ACL not
2536 if (!posix_open && !file_existed && !def_acl) {
2538 int saved_errno = errno; /* We might get ENOSYS in the next
2541 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
2543 errno = saved_errno; /* Ignore ENOSYS */
2546 } else if (new_unx_mode) {
2550 /* Attributes need changing. File already existed. */
2553 int saved_errno = errno; /* We might get ENOSYS in the
2555 ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
2557 if (ret == -1 && errno == ENOSYS) {
2558 errno = saved_errno; /* Ignore ENOSYS */
2560 DEBUG(5, ("open_file_ntcreate: reset "
2561 "attributes of file %s to 0%o\n",
2562 smb_fname_str_dbg(smb_fname),
2563 (unsigned int)new_unx_mode));
2564 ret = 0; /* Don't do the fchmod below. */
2569 (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
2570 DEBUG(5, ("open_file_ntcreate: failed to reset "
2571 "attributes of file %s to 0%o\n",
2572 smb_fname_str_dbg(smb_fname),
2573 (unsigned int)new_unx_mode));
2576 /* If this is a successful open, we must remove any deferred open
2579 del_deferred_open_entry(lck, req->mid,
2580 messaging_server_id(req->sconn->msg_ctx));
2584 return NT_STATUS_OK;
2588 /****************************************************************************
2589 Open a file for for write to ensure that we can fchmod it.
2590 ****************************************************************************/
2592 NTSTATUS open_file_fchmod(connection_struct *conn,
2593 struct smb_filename *smb_fname,
2594 files_struct **result)
2596 if (!VALID_STAT(smb_fname->st)) {
2597 return NT_STATUS_INVALID_PARAMETER;
2600 return SMB_VFS_CREATE_FILE(
2603 0, /* root_dir_fid */
2604 smb_fname, /* fname */
2605 FILE_WRITE_DATA, /* access_mask */
2606 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
2608 FILE_OPEN, /* create_disposition*/
2609 0, /* create_options */
2610 0, /* file_attributes */
2611 INTERNAL_OPEN_ONLY, /* oplock_request */
2612 0, /* allocation_size */
2613 0, /* private_flags */
2616 result, /* result */
2620 static NTSTATUS mkdir_internal(connection_struct *conn,
2621 struct smb_filename *smb_dname,
2622 uint32 file_attributes)
2625 char *parent_dir = NULL;
2627 bool posix_open = false;
2628 bool need_re_stat = false;
2629 uint32_t access_mask = SEC_DIR_ADD_SUBDIR;
2631 if(access_mask & ~(conn->share_access)) {
2632 DEBUG(5,("mkdir_internal: failing share access "
2633 "%s\n", lp_servicename(SNUM(conn))));
2634 return NT_STATUS_ACCESS_DENIED;
2637 if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
2639 return NT_STATUS_NO_MEMORY;
2642 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
2644 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
2646 mode = unix_mode(conn, FILE_ATTRIBUTE_DIRECTORY, smb_dname, parent_dir);
2649 status = check_parent_access(conn,
2652 if(!NT_STATUS_IS_OK(status)) {
2653 DEBUG(5,("mkdir_internal: check_parent_access "
2654 "on directory %s for path %s returned %s\n",
2656 smb_dname->base_name,
2657 nt_errstr(status) ));
2661 if (SMB_VFS_MKDIR(conn, smb_dname->base_name, mode) != 0) {
2662 return map_nt_error_from_unix(errno);
2665 /* Ensure we're checking for a symlink here.... */
2666 /* We don't want to get caught by a symlink racer. */
2668 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2669 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2670 smb_fname_str_dbg(smb_dname), strerror(errno)));
2671 return map_nt_error_from_unix(errno);
2674 if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
2675 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2676 smb_fname_str_dbg(smb_dname)));
2677 return NT_STATUS_NOT_A_DIRECTORY;
2680 if (lp_store_dos_attributes(SNUM(conn))) {
2682 file_set_dosmode(conn, smb_dname,
2683 file_attributes | FILE_ATTRIBUTE_DIRECTORY,
2688 if (lp_inherit_perms(SNUM(conn))) {
2689 inherit_access_posix_acl(conn, parent_dir,
2690 smb_dname->base_name, mode);
2691 need_re_stat = true;
2696 * Check if high bits should have been set,
2697 * then (if bits are missing): add them.
2698 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2701 if ((mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) &&
2702 (mode & ~smb_dname->st.st_ex_mode)) {
2703 SMB_VFS_CHMOD(conn, smb_dname->base_name,
2704 (smb_dname->st.st_ex_mode |
2705 (mode & ~smb_dname->st.st_ex_mode)));
2706 need_re_stat = true;
2710 /* Change the owner if required. */
2711 if (lp_inherit_owner(SNUM(conn))) {
2712 change_dir_owner_to_parent(conn, parent_dir,
2713 smb_dname->base_name,
2715 need_re_stat = true;
2719 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2720 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2721 smb_fname_str_dbg(smb_dname), strerror(errno)));
2722 return map_nt_error_from_unix(errno);
2726 notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
2727 smb_dname->base_name);
2729 return NT_STATUS_OK;
2732 /****************************************************************************
2733 Open a directory from an NT SMB call.
2734 ****************************************************************************/
2736 static NTSTATUS open_directory(connection_struct *conn,
2737 struct smb_request *req,
2738 struct smb_filename *smb_dname,
2740 uint32 share_access,
2741 uint32 create_disposition,
2742 uint32 create_options,
2743 uint32 file_attributes,
2745 files_struct **result)
2747 files_struct *fsp = NULL;
2748 bool dir_existed = VALID_STAT(smb_dname->st) ? True : False;
2749 struct share_mode_lock *lck = NULL;
2751 struct timespec mtimespec;
2754 if (is_ntfs_stream_smb_fname(smb_dname)) {
2755 DEBUG(2, ("open_directory: %s is a stream name!\n",
2756 smb_fname_str_dbg(smb_dname)));
2757 return NT_STATUS_NOT_A_DIRECTORY;
2760 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) {
2761 /* Ensure we have a directory attribute. */
2762 file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
2765 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2766 "share_access = 0x%x create_options = 0x%x, "
2767 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2768 smb_fname_str_dbg(smb_dname),
2769 (unsigned int)access_mask,
2770 (unsigned int)share_access,
2771 (unsigned int)create_options,
2772 (unsigned int)create_disposition,
2773 (unsigned int)file_attributes));
2775 status = smbd_calculate_access_mask(conn, smb_dname,
2776 access_mask, &access_mask);
2777 if (!NT_STATUS_IS_OK(status)) {
2778 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2779 "on file %s returned %s\n",
2780 smb_fname_str_dbg(smb_dname),
2781 nt_errstr(status)));
2785 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
2786 !security_token_has_privilege(get_current_nttok(conn),
2787 SEC_PRIV_SECURITY)) {
2788 DEBUG(10, ("open_directory: open on %s "
2789 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2790 smb_fname_str_dbg(smb_dname)));
2791 return NT_STATUS_PRIVILEGE_NOT_HELD;
2794 switch( create_disposition ) {
2798 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2801 info = FILE_WAS_OPENED;
2806 /* If directory exists error. If directory doesn't
2810 status = NT_STATUS_OBJECT_NAME_COLLISION;
2811 DEBUG(2, ("open_directory: unable to create "
2812 "%s. Error was %s\n",
2813 smb_fname_str_dbg(smb_dname),
2814 nt_errstr(status)));
2818 status = mkdir_internal(conn, smb_dname,
2821 if (!NT_STATUS_IS_OK(status)) {
2822 DEBUG(2, ("open_directory: unable to create "
2823 "%s. Error was %s\n",
2824 smb_fname_str_dbg(smb_dname),
2825 nt_errstr(status)));
2829 info = FILE_WAS_CREATED;
2834 * If directory exists open. If directory doesn't
2839 status = NT_STATUS_OK;
2840 info = FILE_WAS_OPENED;
2842 status = mkdir_internal(conn, smb_dname,
2845 if (NT_STATUS_IS_OK(status)) {
2846 info = FILE_WAS_CREATED;
2848 /* Cope with create race. */
2849 if (!NT_STATUS_EQUAL(status,
2850 NT_STATUS_OBJECT_NAME_COLLISION)) {
2851 DEBUG(2, ("open_directory: unable to create "
2852 "%s. Error was %s\n",
2853 smb_fname_str_dbg(smb_dname),
2854 nt_errstr(status)));
2857 info = FILE_WAS_OPENED;
2863 case FILE_SUPERSEDE:
2864 case FILE_OVERWRITE:
2865 case FILE_OVERWRITE_IF:
2867 DEBUG(5,("open_directory: invalid create_disposition "
2868 "0x%x for directory %s\n",
2869 (unsigned int)create_disposition,
2870 smb_fname_str_dbg(smb_dname)));
2871 return NT_STATUS_INVALID_PARAMETER;
2874 if(!S_ISDIR(smb_dname->st.st_ex_mode)) {
2875 DEBUG(5,("open_directory: %s is not a directory !\n",
2876 smb_fname_str_dbg(smb_dname)));
2877 return NT_STATUS_NOT_A_DIRECTORY;
2880 if (info == FILE_WAS_OPENED) {
2881 status = smbd_check_access_rights(conn, smb_dname, access_mask);
2882 if (!NT_STATUS_IS_OK(status)) {
2883 DEBUG(10, ("open_directory: smbd_check_access_rights on "
2884 "file %s failed with %s\n",
2885 smb_fname_str_dbg(smb_dname),
2886 nt_errstr(status)));
2891 status = file_new(req, conn, &fsp);
2892 if(!NT_STATUS_IS_OK(status)) {
2897 * Setup the files_struct for it.
2900 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
2901 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
2902 fsp->file_pid = req ? req->smbpid : 0;
2903 fsp->can_lock = False;
2904 fsp->can_read = False;
2905 fsp->can_write = False;
2907 fsp->share_access = share_access;
2908 fsp->fh->private_options = 0;
2910 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2912 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2913 fsp->print_file = NULL;
2914 fsp->modified = False;
2915 fsp->oplock_type = NO_OPLOCK;
2916 fsp->sent_oplock_break = NO_BREAK_SENT;
2917 fsp->is_directory = True;
2918 fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
2919 status = fsp_set_smb_fname(fsp, smb_dname);
2920 if (!NT_STATUS_IS_OK(status)) {
2921 file_free(req, fsp);
2925 mtimespec = smb_dname->st.st_ex_mtime;
2928 status = fd_open(conn, fsp, O_RDONLY|O_DIRECTORY, 0);
2930 /* POSIX allows us to open a directory with O_RDONLY. */
2931 status = fd_open(conn, fsp, O_RDONLY, 0);
2933 if (!NT_STATUS_IS_OK(status)) {
2934 DEBUG(5, ("open_directory: Could not open fd for "
2936 smb_fname_str_dbg(smb_dname),
2937 nt_errstr(status)));
2938 file_free(req, fsp);
2942 status = vfs_stat_fsp(fsp);
2943 if (!NT_STATUS_IS_OK(status)) {
2945 file_free(req, fsp);
2949 /* Ensure there was no race condition. */
2950 if (!check_same_stat(&smb_dname->st, &fsp->fsp_name->st)) {
2951 DEBUG(5,("open_directory: stat struct differs for "
2953 smb_fname_str_dbg(smb_dname)));
2955 file_free(req, fsp);
2956 return NT_STATUS_ACCESS_DENIED;
2959 lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
2960 conn->connectpath, smb_dname,
2964 DEBUG(0, ("open_directory: Could not get share mode lock for "
2965 "%s\n", smb_fname_str_dbg(smb_dname)));
2967 file_free(req, fsp);
2968 return NT_STATUS_SHARING_VIOLATION;
2971 status = open_mode_check(conn, lck, fsp->name_hash,
2972 access_mask, share_access,
2973 create_options, &dir_existed);
2975 if (!NT_STATUS_IS_OK(status)) {
2978 file_free(req, fsp);
2982 set_share_mode(lck, fsp, get_current_uid(conn),
2983 req ? req->mid : 0, NO_OPLOCK);
2985 /* For directories the delete on close bit at open time seems
2986 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
2987 if (create_options & FILE_DELETE_ON_CLOSE) {
2988 status = can_set_delete_on_close(fsp, 0);
2989 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
2992 file_free(req, fsp);
2996 if (NT_STATUS_IS_OK(status)) {
2997 /* Note that here we set the *inital* delete on close flag,
2998 not the regular one. The magic gets handled in close. */
2999 fsp->initial_delete_on_close = True;
3010 return NT_STATUS_OK;
3013 NTSTATUS create_directory(connection_struct *conn, struct smb_request *req,
3014 struct smb_filename *smb_dname)
3019 status = SMB_VFS_CREATE_FILE(
3022 0, /* root_dir_fid */
3023 smb_dname, /* fname */
3024 FILE_READ_ATTRIBUTES, /* access_mask */
3025 FILE_SHARE_NONE, /* share_access */
3026 FILE_CREATE, /* create_disposition*/
3027 FILE_DIRECTORY_FILE, /* create_options */
3028 FILE_ATTRIBUTE_DIRECTORY, /* file_attributes */
3029 0, /* oplock_request */
3030 0, /* allocation_size */
3031 0, /* private_flags */
3037 if (NT_STATUS_IS_OK(status)) {
3038 close_file(req, fsp, NORMAL_CLOSE);
3044 /****************************************************************************
3045 Receive notification that one of our open files has been renamed by another
3047 ****************************************************************************/
3049 void msg_file_was_renamed(struct messaging_context *msg,
3052 struct server_id server_id,
3056 char *frm = (char *)data->data;
3058 const char *sharepath;
3059 const char *base_name;
3060 const char *stream_name;
3061 struct smb_filename *smb_fname = NULL;
3062 size_t sp_len, bn_len;
3064 struct smbd_server_connection *sconn =
3065 talloc_get_type_abort(private_data,
3066 struct smbd_server_connection);
3068 if (data->data == NULL
3069 || data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
3070 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3071 (int)data->length));
3075 /* Unpack the message. */
3076 pull_file_id_24(frm, &id);
3077 sharepath = &frm[24];
3078 sp_len = strlen(sharepath);
3079 base_name = sharepath + sp_len + 1;
3080 bn_len = strlen(base_name);
3081 stream_name = sharepath + sp_len + 1 + bn_len + 1;
3083 /* stream_name must always be NULL if there is no stream. */
3084 if (stream_name[0] == '\0') {
3088 status = create_synthetic_smb_fname(talloc_tos(), base_name,
3089 stream_name, NULL, &smb_fname);
3090 if (!NT_STATUS_IS_OK(status)) {
3094 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3096 sharepath, smb_fname_str_dbg(smb_fname),
3097 file_id_string_tos(&id)));
3099 for(fsp = file_find_di_first(sconn, id); fsp;
3100 fsp = file_find_di_next(fsp)) {
3101 if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
3103 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3104 fsp_fnum_dbg(fsp), fsp_str_dbg(fsp),
3105 smb_fname_str_dbg(smb_fname)));
3106 status = fsp_set_smb_fname(fsp, smb_fname);
3107 if (!NT_STATUS_IS_OK(status)) {
3112 /* Now we have the complete path we can work out if this is
3113 actually within this share and adjust newname accordingly. */
3114 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3115 "not sharepath %s) "
3116 "%s from %s -> %s\n",
3117 fsp->conn->connectpath,
3121 smb_fname_str_dbg(smb_fname)));
3125 TALLOC_FREE(smb_fname);
3130 * If a main file is opened for delete, all streams need to be checked for
3131 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3132 * If that works, delete them all by setting the delete on close and close.
3135 NTSTATUS open_streams_for_delete(connection_struct *conn,
3138 struct stream_struct *stream_info = NULL;
3139 files_struct **streams = NULL;
3141 unsigned int num_streams = 0;
3142 TALLOC_CTX *frame = talloc_stackframe();
3145 status = vfs_streaminfo(conn, NULL, fname, talloc_tos(),
3146 &num_streams, &stream_info);
3148 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
3149 || NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
3150 DEBUG(10, ("no streams around\n"));
3152 return NT_STATUS_OK;
3155 if (!NT_STATUS_IS_OK(status)) {
3156 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3157 nt_errstr(status)));
3161 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3164 if (num_streams == 0) {
3166 return NT_STATUS_OK;
3169 streams = talloc_array(talloc_tos(), files_struct *, num_streams);
3170 if (streams == NULL) {
3171 DEBUG(0, ("talloc failed\n"));
3172 status = NT_STATUS_NO_MEMORY;
3176 for (i=0; i<num_streams; i++) {
3177 struct smb_filename *smb_fname = NULL;
3179 if (strequal(stream_info[i].name, "::$DATA")) {
3184 status = create_synthetic_smb_fname(talloc_tos(), fname,
3185 stream_info[i].name,
3187 if (!NT_STATUS_IS_OK(status)) {
3191 if (SMB_VFS_STAT(conn, smb_fname) == -1) {
3192 DEBUG(10, ("Unable to stat stream: %s\n",
3193 smb_fname_str_dbg(smb_fname)));
3196 status = SMB_VFS_CREATE_FILE(
3199 0, /* root_dir_fid */
3200 smb_fname, /* fname */
3201 DELETE_ACCESS, /* access_mask */
3202 (FILE_SHARE_READ | /* share_access */
3203 FILE_SHARE_WRITE | FILE_SHARE_DELETE),
3204 FILE_OPEN, /* create_disposition*/
3205 0, /* create_options */
3206 FILE_ATTRIBUTE_NORMAL, /* file_attributes */
3207 0, /* oplock_request */
3208 0, /* allocation_size */
3209 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* private_flags */
3212 &streams[i], /* result */
3215 if (!NT_STATUS_IS_OK(status)) {
3216 DEBUG(10, ("Could not open stream %s: %s\n",
3217 smb_fname_str_dbg(smb_fname),
3218 nt_errstr(status)));
3220 TALLOC_FREE(smb_fname);
3223 TALLOC_FREE(smb_fname);
3227 * don't touch the variable "status" beyond this point :-)
3230 for (i -= 1 ; i >= 0; i--) {
3231 if (streams[i] == NULL) {
3235 DEBUG(10, ("Closing stream # %d, %s\n", i,
3236 fsp_str_dbg(streams[i])));
3237 close_file(NULL, streams[i], NORMAL_CLOSE);
3245 /*********************************************************************
3246 Create a default ACL by inheriting from the parent. If no inheritance
3247 from the parent available, don't set anything. This will leave the actual
3248 permissions the new file or directory already got from the filesystem
3249 as the NT ACL when read.
3250 *********************************************************************/
3252 static NTSTATUS inherit_new_acl(files_struct *fsp)
3254 TALLOC_CTX *ctx = talloc_tos();
3255 char *parent_name = NULL;
3256 struct security_descriptor *parent_desc = NULL;
3257 NTSTATUS status = NT_STATUS_OK;
3258 struct security_descriptor *psd = NULL;
3259 struct dom_sid *owner_sid = NULL;
3260 struct dom_sid *group_sid = NULL;
3261 uint32_t security_info_sent = (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL);
3262 bool inherit_owner = lp_inherit_owner(SNUM(fsp->conn));
3263 bool inheritable_components = false;
3266 if (!parent_dirname(ctx, fsp->fsp_name->base_name, &parent_name, NULL)) {
3267 return NT_STATUS_NO_MEMORY;
3270 status = SMB_VFS_GET_NT_ACL(fsp->conn,
3272 (SECINFO_OWNER | SECINFO_GROUP | SECINFO_DACL),
3274 if (!NT_STATUS_IS_OK(status)) {
3278 inheritable_components = sd_has_inheritable_components(parent_desc,
3281 if (!inheritable_components && !inherit_owner) {
3282 /* Nothing to inherit and not setting owner. */
3283 return NT_STATUS_OK;
3286 /* Create an inherited descriptor from the parent. */
3288 if (DEBUGLEVEL >= 10) {
3289 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3290 fsp_str_dbg(fsp) ));
3291 NDR_PRINT_DEBUG(security_descriptor, parent_desc);
3294 /* Inherit from parent descriptor if "inherit owner" set. */
3295 if (inherit_owner) {
3296 owner_sid = parent_desc->owner_sid;
3297 group_sid = parent_desc->group_sid;
3300 if (owner_sid == NULL) {
3301 owner_sid = &fsp->conn->session_info->security_token->sids[PRIMARY_USER_SID_INDEX];
3303 if (group_sid == NULL) {
3304 group_sid = &fsp->conn->session_info->security_token->sids[PRIMARY_GROUP_SID_INDEX];
3307 status = se_create_child_secdesc(ctx,
3314 if (!NT_STATUS_IS_OK(status)) {
3318 /* If inheritable_components == false,
3319 se_create_child_secdesc()
3320 creates a security desriptor with a NULL dacl
3321 entry, but with SEC_DESC_DACL_PRESENT. We need
3322 to remove that flag. */
3324 if (!inheritable_components) {
3325 security_info_sent &= ~SECINFO_DACL;
3326 psd->type &= ~SEC_DESC_DACL_PRESENT;
3329 if (DEBUGLEVEL >= 10) {
3330 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3331 fsp_str_dbg(fsp) ));
3332 NDR_PRINT_DEBUG(security_descriptor, psd);
3335 if (inherit_owner) {
3336 /* We need to be root to force this. */
3339 status = SMB_VFS_FSET_NT_ACL(fsp,
3342 if (inherit_owner) {
3349 * Wrapper around open_file_ntcreate and open_directory
3352 static NTSTATUS create_file_unixpath(connection_struct *conn,
3353 struct smb_request *req,
3354 struct smb_filename *smb_fname,
3355 uint32_t access_mask,
3356 uint32_t share_access,
3357 uint32_t create_disposition,
3358 uint32_t create_options,
3359 uint32_t file_attributes,
3360 uint32_t oplock_request,
3361 uint64_t allocation_size,
3362 uint32_t private_flags,
3363 struct security_descriptor *sd,
3364 struct ea_list *ea_list,
3366 files_struct **result,
3369 int info = FILE_WAS_OPENED;
3370 files_struct *base_fsp = NULL;
3371 files_struct *fsp = NULL;
3374 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3375 "file_attributes = 0x%x, share_access = 0x%x, "
3376 "create_disposition = 0x%x create_options = 0x%x "
3377 "oplock_request = 0x%x private_flags = 0x%x "
3378 "ea_list = 0x%p, sd = 0x%p, "
3380 (unsigned int)access_mask,
3381 (unsigned int)file_attributes,
3382 (unsigned int)share_access,
3383 (unsigned int)create_disposition,
3384 (unsigned int)create_options,
3385 (unsigned int)oplock_request,
3386 (unsigned int)private_flags,
3387 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3389 if (create_options & FILE_OPEN_BY_FILE_ID) {
3390 status = NT_STATUS_NOT_SUPPORTED;
3394 if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
3395 status = NT_STATUS_INVALID_PARAMETER;
3400 oplock_request |= INTERNAL_OPEN_ONLY;
3403 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3404 && (access_mask & DELETE_ACCESS)
3405 && !is_ntfs_stream_smb_fname(smb_fname)) {
3407 * We can't open a file with DELETE access if any of the
3408 * streams is open without FILE_SHARE_DELETE
3410 status = open_streams_for_delete(conn, smb_fname->base_name);
3412 if (!NT_STATUS_IS_OK(status)) {
3417 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
3418 !security_token_has_privilege(get_current_nttok(conn),
3419 SEC_PRIV_SECURITY)) {
3420 DEBUG(10, ("create_file_unixpath: open on %s "
3421 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3422 smb_fname_str_dbg(smb_fname)));
3423 status = NT_STATUS_PRIVILEGE_NOT_HELD;
3427 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3428 && is_ntfs_stream_smb_fname(smb_fname)
3429 && (!(private_flags & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
3430 uint32 base_create_disposition;
3431 struct smb_filename *smb_fname_base = NULL;
3433 if (create_options & FILE_DIRECTORY_FILE) {
3434 status = NT_STATUS_NOT_A_DIRECTORY;
3438 switch (create_disposition) {
3440 base_create_disposition = FILE_OPEN;
3443 base_create_disposition = FILE_OPEN_IF;
3447 /* Create an smb_filename with stream_name == NULL. */
3448 status = create_synthetic_smb_fname(talloc_tos(),
3449 smb_fname->base_name,
3452 if (!NT_STATUS_IS_OK(status)) {
3456 if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
3457 DEBUG(10, ("Unable to stat stream: %s\n",
3458 smb_fname_str_dbg(smb_fname_base)));
3461 /* Open the base file. */
3462 status = create_file_unixpath(conn, NULL, smb_fname_base, 0,
3465 | FILE_SHARE_DELETE,
3466 base_create_disposition,
3467 0, 0, 0, 0, 0, NULL, NULL,
3469 TALLOC_FREE(smb_fname_base);
3471 if (!NT_STATUS_IS_OK(status)) {
3472 DEBUG(10, ("create_file_unixpath for base %s failed: "
3473 "%s\n", smb_fname->base_name,
3474 nt_errstr(status)));
3477 /* we don't need to low level fd */
3482 * If it's a request for a directory open, deal with it separately.
3485 if (create_options & FILE_DIRECTORY_FILE) {
3487 if (create_options & FILE_NON_DIRECTORY_FILE) {
3488 status = NT_STATUS_INVALID_PARAMETER;
3492 /* Can't open a temp directory. IFS kit test. */
3493 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
3494 (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
3495 status = NT_STATUS_INVALID_PARAMETER;
3500 * We will get a create directory here if the Win32
3501 * app specified a security descriptor in the
3502 * CreateDirectory() call.
3506 status = open_directory(
3507 conn, req, smb_fname, access_mask, share_access,
3508 create_disposition, create_options, file_attributes,
3513 * Ordinary file case.
3516 status = file_new(req, conn, &fsp);
3517 if(!NT_STATUS_IS_OK(status)) {
3521 status = fsp_set_smb_fname(fsp, smb_fname);
3522 if (!NT_STATUS_IS_OK(status)) {
3527 * We're opening the stream element of a base_fsp
3528 * we already opened. Set up the base_fsp pointer.
3531 fsp->base_fsp = base_fsp;
3534 status = open_file_ntcreate(conn,
3546 if(!NT_STATUS_IS_OK(status)) {
3547 file_free(req, fsp);
3551 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
3553 /* A stream open never opens a directory */
3556 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3561 * Fail the open if it was explicitly a non-directory
3565 if (create_options & FILE_NON_DIRECTORY_FILE) {
3566 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3571 status = open_directory(
3572 conn, req, smb_fname, access_mask,
3573 share_access, create_disposition,
3574 create_options, file_attributes,
3579 if (!NT_STATUS_IS_OK(status)) {
3583 fsp->base_fsp = base_fsp;
3585 if ((ea_list != NULL) &&
3586 ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN))) {
3587 status = set_ea(conn, fsp, fsp->fsp_name, ea_list);
3588 if (!NT_STATUS_IS_OK(status)) {
3593 if (!fsp->is_directory && S_ISDIR(fsp->fsp_name->st.st_ex_mode)) {
3594 status = NT_STATUS_ACCESS_DENIED;
3598 /* Save the requested allocation size. */
3599 if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
3601 && (allocation_size > fsp->fsp_name->st.st_ex_size)) {
3602 fsp->initial_allocation_size = smb_roundup(
3603 fsp->conn, allocation_size);
3604 if (fsp->is_directory) {
3605 /* Can't set allocation size on a directory. */
3606 status = NT_STATUS_ACCESS_DENIED;
3609 if (vfs_allocate_file_space(
3610 fsp, fsp->initial_allocation_size) == -1) {
3611 status = NT_STATUS_DISK_FULL;
3615 fsp->initial_allocation_size = smb_roundup(
3616 fsp->conn, (uint64_t)fsp->fsp_name->st.st_ex_size);
3620 if ((info == FILE_WAS_CREATED) && lp_nt_acl_support(SNUM(conn)) &&
3621 fsp->base_fsp == NULL) {
3624 * According to the MS documentation, the only time the security
3625 * descriptor is applied to the opened file is iff we *created* the
3626 * file; an existing file stays the same.
3628 * Also, it seems (from observation) that you can open the file with
3629 * any access mask but you can still write the sd. We need to override
3630 * the granted access before we call set_sd
3631 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3634 uint32_t sec_info_sent;
3635 uint32_t saved_access_mask = fsp->access_mask;
3637 sec_info_sent = get_sec_info(sd);
3639 fsp->access_mask = FILE_GENERIC_ALL;
3641 /* Convert all the generic bits. */
3642 security_acl_map_generic(sd->dacl, &file_generic_mapping);
3643 security_acl_map_generic(sd->sacl, &file_generic_mapping);
3645 if (sec_info_sent & (SECINFO_OWNER|
3649 status = SMB_VFS_FSET_NT_ACL(fsp, sec_info_sent, sd);
3652 fsp->access_mask = saved_access_mask;
3654 if (!NT_STATUS_IS_OK(status)) {
3657 } else if (lp_inherit_acls(SNUM(conn))) {
3658 /* Inherit from parent. Errors here are not fatal. */
3659 status = inherit_new_acl(fsp);
3660 if (!NT_STATUS_IS_OK(status)) {
3661 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3663 nt_errstr(status) ));
3668 DEBUG(10, ("create_file_unixpath: info=%d\n", info));
3671 if (pinfo != NULL) {
3675 smb_fname->st = fsp->fsp_name->st;
3677 return NT_STATUS_OK;
3680 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
3683 if (base_fsp && fsp->base_fsp == base_fsp) {
3685 * The close_file below will close
3690 close_file(req, fsp, ERROR_CLOSE);
3693 if (base_fsp != NULL) {
3694 close_file(req, base_fsp, ERROR_CLOSE);
3701 * Calculate the full path name given a relative fid.
3703 NTSTATUS get_relative_fid_filename(connection_struct *conn,
3704 struct smb_request *req,
3705 uint16_t root_dir_fid,
3706 const struct smb_filename *smb_fname,
3707 struct smb_filename **smb_fname_out)
3709 files_struct *dir_fsp;
3710 char *parent_fname = NULL;
3711 char *new_base_name = NULL;
3714 if (root_dir_fid == 0 || !smb_fname) {
3715 status = NT_STATUS_INTERNAL_ERROR;
3719 dir_fsp = file_fsp(req, root_dir_fid);
3721 if (dir_fsp == NULL) {
3722 status = NT_STATUS_INVALID_HANDLE;
3726 if (is_ntfs_stream_smb_fname(dir_fsp->fsp_name)) {
3727 status = NT_STATUS_INVALID_HANDLE;
3731 if (!dir_fsp->is_directory) {
3734 * Check to see if this is a mac fork of some kind.
3737 if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
3738 is_ntfs_stream_smb_fname(smb_fname)) {
3739 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
3744 we need to handle the case when we get a
3745 relative open relative to a file and the
3746 pathname is blank - this is a reopen!
3747 (hint from demyn plantenberg)
3750 status = NT_STATUS_INVALID_HANDLE;
3754 if (ISDOT(dir_fsp->fsp_name->base_name)) {
3756 * We're at the toplevel dir, the final file name
3757 * must not contain ./, as this is filtered out
3758 * normally by srvstr_get_path and unix_convert
3759 * explicitly rejects paths containing ./.
3761 parent_fname = talloc_strdup(talloc_tos(), "");
3762 if (parent_fname == NULL) {
3763 status = NT_STATUS_NO_MEMORY;
3767 size_t dir_name_len = strlen(dir_fsp->fsp_name->base_name);
3770 * Copy in the base directory name.
3773 parent_fname = talloc_array(talloc_tos(), char,
3775 if (parent_fname == NULL) {
3776 status = NT_STATUS_NO_MEMORY;
3779 memcpy(parent_fname, dir_fsp->fsp_name->base_name,
3783 * Ensure it ends in a '/'.
3784 * We used TALLOC_SIZE +2 to add space for the '/'.
3788 && (parent_fname[dir_name_len-1] != '\\')
3789 && (parent_fname[dir_name_len-1] != '/')) {
3790 parent_fname[dir_name_len] = '/';
3791 parent_fname[dir_name_len+1] = '\0';
3795 new_base_name = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
3796 smb_fname->base_name);
3797 if (new_base_name == NULL) {
3798 status = NT_STATUS_NO_MEMORY;
3802 status = filename_convert(req,
3804 req->flags2 & FLAGS2_DFS_PATHNAMES,
3809 if (!NT_STATUS_IS_OK(status)) {
3814 TALLOC_FREE(parent_fname);
3815 TALLOC_FREE(new_base_name);
3819 NTSTATUS create_file_default(connection_struct *conn,
3820 struct smb_request *req,
3821 uint16_t root_dir_fid,
3822 struct smb_filename *smb_fname,
3823 uint32_t access_mask,
3824 uint32_t share_access,
3825 uint32_t create_disposition,
3826 uint32_t create_options,
3827 uint32_t file_attributes,
3828 uint32_t oplock_request,
3829 uint64_t allocation_size,
3830 uint32_t private_flags,
3831 struct security_descriptor *sd,
3832 struct ea_list *ea_list,
3833 files_struct **result,
3836 int info = FILE_WAS_OPENED;
3837 files_struct *fsp = NULL;
3839 bool stream_name = false;
3841 DEBUG(10,("create_file: access_mask = 0x%x "
3842 "file_attributes = 0x%x, share_access = 0x%x, "
3843 "create_disposition = 0x%x create_options = 0x%x "
3844 "oplock_request = 0x%x "
3845 "private_flags = 0x%x "
3846 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
3848 (unsigned int)access_mask,
3849 (unsigned int)file_attributes,
3850 (unsigned int)share_access,
3851 (unsigned int)create_disposition,
3852 (unsigned int)create_options,
3853 (unsigned int)oplock_request,
3854 (unsigned int)private_flags,
3855 (unsigned int)root_dir_fid,
3856 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3859 * Calculate the filename from the root_dir_if if necessary.
3862 if (root_dir_fid != 0) {
3863 struct smb_filename *smb_fname_out = NULL;
3864 status = get_relative_fid_filename(conn, req, root_dir_fid,
3865 smb_fname, &smb_fname_out);
3866 if (!NT_STATUS_IS_OK(status)) {
3869 smb_fname = smb_fname_out;
3873 * Check to see if this is a mac fork of some kind.
3876 stream_name = is_ntfs_stream_smb_fname(smb_fname);
3878 enum FAKE_FILE_TYPE fake_file_type;
3880 fake_file_type = is_fake_file(smb_fname);
3882 if (fake_file_type != FAKE_FILE_TYPE_NONE) {
3885 * Here we go! support for changing the disk quotas
3888 * We need to fake up to open this MAGIC QUOTA file
3889 * and return a valid FID.
3891 * w2k close this file directly after openening xp
3892 * also tries a QUERY_FILE_INFO on the file and then
3895 status = open_fake_file(req, conn, req->vuid,
3896 fake_file_type, smb_fname,
3898 if (!NT_STATUS_IS_OK(status)) {
3902 ZERO_STRUCT(smb_fname->st);
3906 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
3907 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
3912 if (is_ntfs_default_stream_smb_fname(smb_fname)) {
3914 smb_fname->stream_name = NULL;
3915 /* We have to handle this error here. */
3916 if (create_options & FILE_DIRECTORY_FILE) {
3917 status = NT_STATUS_NOT_A_DIRECTORY;
3920 if (lp_posix_pathnames()) {
3921 ret = SMB_VFS_LSTAT(conn, smb_fname);
3923 ret = SMB_VFS_STAT(conn, smb_fname);
3926 if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
3927 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3932 status = create_file_unixpath(
3933 conn, req, smb_fname, access_mask, share_access,
3934 create_disposition, create_options, file_attributes,
3935 oplock_request, allocation_size, private_flags,
3939 if (!NT_STATUS_IS_OK(status)) {
3944 DEBUG(10, ("create_file: info=%d\n", info));
3947 if (pinfo != NULL) {
3950 return NT_STATUS_OK;
3953 DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
3956 close_file(req, fsp, ERROR_CLOSE);