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"
33 extern const struct generic_mapping file_generic_mapping;
35 struct deferred_open_record {
36 bool delayed_for_oplocks;
40 /****************************************************************************
41 SMB1 file varient of se_access_check. Never test FILE_READ_ATTRIBUTES.
42 ****************************************************************************/
44 NTSTATUS smb1_file_se_access_check(struct connection_struct *conn,
45 const struct security_descriptor *sd,
46 const struct security_token *token,
47 uint32_t access_desired,
48 uint32_t *access_granted)
52 if (get_current_uid(conn) == (uid_t)0) {
53 /* I'm sorry sir, I didn't know you were root... */
54 *access_granted = access_desired;
55 if (access_desired & SEC_FLAG_MAXIMUM_ALLOWED) {
56 *access_granted |= FILE_GENERIC_ALL;
61 return se_access_check(sd,
63 (access_desired & ~FILE_READ_ATTRIBUTES),
67 /****************************************************************************
68 Check if we have open rights.
69 ****************************************************************************/
71 NTSTATUS smbd_check_open_rights(struct connection_struct *conn,
72 const struct smb_filename *smb_fname,
74 uint32_t *access_granted)
76 /* Check if we have rights to open. */
78 struct security_descriptor *sd = NULL;
79 uint32_t rejected_share_access;
81 rejected_share_access = access_mask & ~(conn->share_access);
83 if (rejected_share_access) {
84 *access_granted = rejected_share_access;
85 return NT_STATUS_ACCESS_DENIED;
88 if ((access_mask & DELETE_ACCESS) && !lp_acl_check_permissions(SNUM(conn))) {
89 *access_granted = access_mask;
91 DEBUG(10,("smbd_check_open_rights: not checking ACL "
92 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
93 smb_fname_str_dbg(smb_fname),
94 (unsigned int)*access_granted ));
98 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
103 if (!NT_STATUS_IS_OK(status)) {
104 DEBUG(10, ("smbd_check_open_rights: Could not get acl "
106 smb_fname_str_dbg(smb_fname),
111 status = smb1_file_se_access_check(conn,
113 get_current_nttok(conn),
117 DEBUG(10,("smbd_check_open_rights: file %s requesting "
118 "0x%x returning 0x%x (%s)\n",
119 smb_fname_str_dbg(smb_fname),
120 (unsigned int)access_mask,
121 (unsigned int)*access_granted,
122 nt_errstr(status) ));
124 if (!NT_STATUS_IS_OK(status)) {
125 if (DEBUGLEVEL >= 10) {
126 DEBUG(10,("smbd_check_open_rights: acl for %s is:\n",
127 smb_fname_str_dbg(smb_fname) ));
128 NDR_PRINT_DEBUG(security_descriptor, sd);
137 static NTSTATUS check_parent_access(struct connection_struct *conn,
138 struct smb_filename *smb_fname,
139 uint32_t access_mask,
140 char **pp_parent_dir,
141 struct security_descriptor **pp_parent_sd)
144 char *parent_dir = NULL;
145 struct security_descriptor *parent_sd = NULL;
146 uint32_t access_granted = 0;
148 if (!parent_dirname(talloc_tos(),
149 smb_fname->base_name,
152 return NT_STATUS_NO_MEMORY;
155 status = SMB_VFS_GET_NT_ACL(conn,
160 if (!NT_STATUS_IS_OK(status)) {
161 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
162 "%s with error %s\n",
168 status = smb1_file_se_access_check(conn,
170 get_current_nttok(conn),
173 if(!NT_STATUS_IS_OK(status)) {
174 DEBUG(5,("check_parent_access: access check "
175 "on directory %s for "
176 "path %s for mask 0x%x returned (0x%x) %s\n",
178 smb_fname->base_name,
181 nt_errstr(status) ));
186 *pp_parent_dir = parent_dir;
189 *pp_parent_sd = parent_sd;
194 /****************************************************************************
195 fd support routines - attempt to do a dos_open.
196 ****************************************************************************/
198 static NTSTATUS fd_open(struct connection_struct *conn,
203 struct smb_filename *smb_fname = fsp->fsp_name;
204 NTSTATUS status = NT_STATUS_OK;
208 * Never follow symlinks on a POSIX client. The
209 * client should be doing this.
212 if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
217 fsp->fh->fd = SMB_VFS_OPEN(conn, smb_fname, fsp, flags, mode);
218 if (fsp->fh->fd == -1) {
219 status = map_nt_error_from_unix(errno);
220 if (errno == EMFILE) {
221 static time_t last_warned = 0L;
223 if (time((time_t *) NULL) > last_warned) {
224 DEBUG(0,("Too many open files, unable "
225 "to open more! smbd's max "
227 lp_max_open_files()));
228 last_warned = time((time_t *) NULL);
234 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
235 smb_fname_str_dbg(smb_fname), flags, (int)mode, fsp->fh->fd,
236 (fsp->fh->fd == -1) ? strerror(errno) : "" ));
241 /****************************************************************************
242 Close the file associated with a fsp.
243 ****************************************************************************/
245 NTSTATUS fd_close(files_struct *fsp)
252 if (fsp->fh->fd == -1) {
253 return NT_STATUS_OK; /* What we used to call a stat open. */
255 if (fsp->fh->ref_count > 1) {
256 return NT_STATUS_OK; /* Shared handle. Only close last reference. */
259 ret = SMB_VFS_CLOSE(fsp);
262 return map_nt_error_from_unix(errno);
267 /****************************************************************************
268 Change the ownership of a file to that of the parent directory.
269 Do this by fd if possible.
270 ****************************************************************************/
272 void change_file_owner_to_parent(connection_struct *conn,
273 const char *inherit_from_dir,
276 struct smb_filename *smb_fname_parent = NULL;
280 status = create_synthetic_smb_fname(talloc_tos(), inherit_from_dir,
281 NULL, NULL, &smb_fname_parent);
282 if (!NT_STATUS_IS_OK(status)) {
286 ret = SMB_VFS_STAT(conn, smb_fname_parent);
288 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
289 "directory %s. Error was %s\n",
290 smb_fname_str_dbg(smb_fname_parent),
292 TALLOC_FREE(smb_fname_parent);
296 if (smb_fname_parent->st.st_ex_uid == fsp->fsp_name->st.st_ex_uid) {
297 /* Already this uid - no need to change. */
298 DEBUG(10,("change_file_owner_to_parent: file %s "
299 "is already owned by uid %d\n",
301 (int)fsp->fsp_name->st.st_ex_uid ));
302 TALLOC_FREE(smb_fname_parent);
307 ret = SMB_VFS_FCHOWN(fsp, smb_fname_parent->st.st_ex_uid, (gid_t)-1);
310 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
311 "file %s to parent directory uid %u. Error "
312 "was %s\n", fsp_str_dbg(fsp),
313 (unsigned int)smb_fname_parent->st.st_ex_uid,
316 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
317 "parent directory uid %u.\n", fsp_str_dbg(fsp),
318 (unsigned int)smb_fname_parent->st.st_ex_uid));
319 /* Ensure the uid entry is updated. */
320 fsp->fsp_name->st.st_ex_uid = smb_fname_parent->st.st_ex_uid;
323 TALLOC_FREE(smb_fname_parent);
326 NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
327 const char *inherit_from_dir,
329 SMB_STRUCT_STAT *psbuf)
331 struct smb_filename *smb_fname_parent = NULL;
332 struct smb_filename *smb_fname_cwd = NULL;
333 char *saved_dir = NULL;
334 TALLOC_CTX *ctx = talloc_tos();
335 NTSTATUS status = NT_STATUS_OK;
338 status = create_synthetic_smb_fname(ctx, inherit_from_dir, NULL, NULL,
340 if (!NT_STATUS_IS_OK(status)) {
344 ret = SMB_VFS_STAT(conn, smb_fname_parent);
346 status = map_nt_error_from_unix(errno);
347 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
348 "directory %s. Error was %s\n",
349 smb_fname_str_dbg(smb_fname_parent),
354 /* We've already done an lstat into psbuf, and we know it's a
355 directory. If we can cd into the directory and the dev/ino
356 are the same then we can safely chown without races as
357 we're locking the directory in place by being in it. This
358 should work on any UNIX (thanks tridge :-). JRA.
361 saved_dir = vfs_GetWd(ctx,conn);
363 status = map_nt_error_from_unix(errno);
364 DEBUG(0,("change_dir_owner_to_parent: failed to get "
365 "current working directory. Error was %s\n",
370 /* Chdir into the new path. */
371 if (vfs_ChDir(conn, fname) == -1) {
372 status = map_nt_error_from_unix(errno);
373 DEBUG(0,("change_dir_owner_to_parent: failed to change "
374 "current working directory to %s. Error "
375 "was %s\n", fname, strerror(errno) ));
379 status = create_synthetic_smb_fname(ctx, ".", NULL, NULL,
381 if (!NT_STATUS_IS_OK(status)) {
385 ret = SMB_VFS_STAT(conn, smb_fname_cwd);
387 status = map_nt_error_from_unix(errno);
388 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
389 "directory '.' (%s) Error was %s\n",
390 fname, strerror(errno)));
394 /* Ensure we're pointing at the same place. */
395 if (smb_fname_cwd->st.st_ex_dev != psbuf->st_ex_dev ||
396 smb_fname_cwd->st.st_ex_ino != psbuf->st_ex_ino) {
397 DEBUG(0,("change_dir_owner_to_parent: "
398 "device/inode on directory %s changed. "
399 "Refusing to chown !\n", fname ));
400 status = NT_STATUS_ACCESS_DENIED;
404 if (smb_fname_parent->st.st_ex_uid == smb_fname_cwd->st.st_ex_uid) {
405 /* Already this uid - no need to change. */
406 DEBUG(10,("change_dir_owner_to_parent: directory %s "
407 "is already owned by uid %d\n",
409 (int)smb_fname_cwd->st.st_ex_uid ));
410 status = NT_STATUS_OK;
415 ret = SMB_VFS_LCHOWN(conn, ".", smb_fname_parent->st.st_ex_uid,
419 status = map_nt_error_from_unix(errno);
420 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
421 "directory %s to parent directory uid %u. "
422 "Error was %s\n", fname,
423 (unsigned int)smb_fname_parent->st.st_ex_uid,
426 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
427 "directory %s to parent directory uid %u.\n",
428 fname, (unsigned int)smb_fname_parent->st.st_ex_uid ));
429 /* Ensure the uid entry is updated. */
430 psbuf->st_ex_uid = smb_fname_parent->st.st_ex_uid;
434 vfs_ChDir(conn,saved_dir);
436 TALLOC_FREE(smb_fname_parent);
437 TALLOC_FREE(smb_fname_cwd);
441 /****************************************************************************
443 ****************************************************************************/
445 static NTSTATUS open_file(files_struct *fsp,
446 connection_struct *conn,
447 struct smb_request *req,
448 const char *parent_dir,
451 uint32 access_mask, /* client requested access mask. */
452 uint32 open_access_mask) /* what we're actually using in the open. */
454 struct smb_filename *smb_fname = fsp->fsp_name;
455 NTSTATUS status = NT_STATUS_OK;
456 int accmode = (flags & O_ACCMODE);
457 int local_flags = flags;
458 bool file_existed = VALID_STAT(fsp->fsp_name->st);
459 bool file_created = false;
464 /* Check permissions */
467 * This code was changed after seeing a client open request
468 * containing the open mode of (DENY_WRITE/read-only) with
469 * the 'create if not exist' bit set. The previous code
470 * would fail to open the file read only on a read-only share
471 * as it was checking the flags parameter directly against O_RDONLY,
472 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
476 if (!CAN_WRITE(conn)) {
477 /* It's a read-only share - fail if we wanted to write. */
478 if(accmode != O_RDONLY || (flags & O_TRUNC) || (flags & O_APPEND)) {
479 DEBUG(3,("Permission denied opening %s\n",
480 smb_fname_str_dbg(smb_fname)));
481 return NT_STATUS_ACCESS_DENIED;
482 } else if(flags & O_CREAT) {
483 /* We don't want to write - but we must make sure that
484 O_CREAT doesn't create the file if we have write
485 access into the directory.
487 flags &= ~(O_CREAT|O_EXCL);
488 local_flags &= ~(O_CREAT|O_EXCL);
493 * This little piece of insanity is inspired by the
494 * fact that an NT client can open a file for O_RDONLY,
495 * but set the create disposition to FILE_EXISTS_TRUNCATE.
496 * If the client *can* write to the file, then it expects to
497 * truncate the file, even though it is opening for readonly.
498 * Quicken uses this stupid trick in backup file creation...
499 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
500 * for helping track this one down. It didn't bite us in 2.0.x
501 * as we always opened files read-write in that release. JRA.
504 if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
505 DEBUG(10,("open_file: truncate requested on read-only open "
506 "for file %s\n", smb_fname_str_dbg(smb_fname)));
507 local_flags = (flags & ~O_ACCMODE)|O_RDWR;
510 if ((open_access_mask & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
511 (!file_existed && (local_flags & O_CREAT)) ||
512 ((local_flags & O_TRUNC) == O_TRUNC) ) {
516 * We can't actually truncate here as the file may be locked.
517 * open_file_ntcreate will take care of the truncate later. JRA.
520 local_flags &= ~O_TRUNC;
522 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
524 * We would block on opening a FIFO with no one else on the
525 * other end. Do what we used to do and add O_NONBLOCK to the
529 if (file_existed && S_ISFIFO(smb_fname->st.st_ex_mode)) {
530 local_flags |= O_NONBLOCK;
534 /* Don't create files with Microsoft wildcard characters. */
537 * wildcard characters are allowed in stream names
538 * only test the basefilename
540 wild = fsp->base_fsp->fsp_name->base_name;
542 wild = smb_fname->base_name;
544 if ((local_flags & O_CREAT) && !file_existed &&
546 return NT_STATUS_OBJECT_NAME_INVALID;
549 /* Actually do the open */
550 status = fd_open(conn, fsp, local_flags, unx_mode);
551 if (!NT_STATUS_IS_OK(status)) {
552 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
553 "(flags=%d)\n", smb_fname_str_dbg(smb_fname),
554 nt_errstr(status),local_flags,flags));
558 if ((local_flags & O_CREAT) && !file_existed) {
563 uint32_t access_granted = 0;
565 fsp->fh->fd = -1; /* What we used to call a stat open. */
567 /* File must exist for a stat open. */
568 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
571 status = smbd_check_open_rights(conn,
575 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
577 * On NT_STATUS_ACCESS_DENIED, access_granted
578 * contains the denied bits.
581 if ((access_mask & FILE_WRITE_ATTRIBUTES) &&
582 (access_granted & FILE_WRITE_ATTRIBUTES) &&
583 (lp_map_readonly(SNUM(conn)) ||
584 lp_map_archive(SNUM(conn)) ||
585 lp_map_hidden(SNUM(conn)) ||
586 lp_map_system(SNUM(conn)))) {
587 access_granted &= ~FILE_WRITE_ATTRIBUTES;
589 DEBUG(10,("open_file: "
598 if ((access_mask & DELETE_ACCESS) &&
599 (access_granted & DELETE_ACCESS) &&
600 can_delete_file_in_directory(conn,
602 /* Were we trying to do a stat open
603 * for delete and didn't get DELETE
604 * access (only) ? Check if the
605 * directory allows DELETE_CHILD.
607 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
610 access_granted &= ~DELETE_ACCESS;
612 DEBUG(10,("open_file: "
620 if (access_granted != 0) {
621 DEBUG(10,("open_file: Access "
628 } else if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND) &&
630 S_ISLNK(smb_fname->st.st_ex_mode)) {
631 /* This is a POSIX stat open for delete
632 * or rename on a symlink that points
634 DEBUG(10,("open_file: allowing POSIX "
635 "open on bad symlink %s\n",
638 } else if (!NT_STATUS_IS_OK(status)) {
639 DEBUG(10,("open_file: "
640 "smbd_check_open_rights on file "
642 smb_fname_str_dbg(smb_fname),
643 nt_errstr(status) ));
651 if (fsp->fh->fd == -1) {
652 ret = SMB_VFS_STAT(conn, smb_fname);
654 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
655 /* If we have an fd, this stat should succeed. */
657 DEBUG(0,("Error doing fstat on open file %s "
659 smb_fname_str_dbg(smb_fname),
664 /* For a non-io open, this stat failing means file not found. JRA */
666 status = map_nt_error_from_unix(errno);
672 bool need_re_stat = false;
673 /* Do all inheritance work after we've
674 done a successful stat call and filled
675 in the stat struct in fsp->fsp_name. */
677 /* Inherit the ACL if required */
678 if (lp_inherit_perms(SNUM(conn))) {
679 inherit_access_posix_acl(conn, parent_dir,
680 smb_fname->base_name,
685 /* Change the owner if required. */
686 if (lp_inherit_owner(SNUM(conn))) {
687 change_file_owner_to_parent(conn, parent_dir,
693 if (fsp->fh->fd == -1) {
694 ret = SMB_VFS_STAT(conn, smb_fname);
696 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
697 /* If we have an fd, this stat should succeed. */
699 DEBUG(0,("Error doing fstat on open file %s "
701 smb_fname_str_dbg(smb_fname),
707 notify_fname(conn, NOTIFY_ACTION_ADDED,
708 FILE_NOTIFY_CHANGE_FILE_NAME,
709 smb_fname->base_name);
714 * POSIX allows read-only opens of directories. We don't
715 * want to do this (we use a different code path for this)
716 * so catch a directory open and return an EISDIR. JRA.
719 if(S_ISDIR(smb_fname->st.st_ex_mode)) {
722 return NT_STATUS_FILE_IS_A_DIRECTORY;
725 fsp->mode = smb_fname->st.st_ex_mode;
726 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
727 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
728 fsp->file_pid = req ? req->smbpid : 0;
729 fsp->can_lock = True;
730 fsp->can_read = (access_mask & (FILE_READ_DATA)) ? True : False;
731 if (!CAN_WRITE(conn)) {
732 fsp->can_write = False;
734 fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ?
737 fsp->print_file = NULL;
738 fsp->modified = False;
739 fsp->sent_oplock_break = NO_BREAK_SENT;
740 fsp->is_directory = False;
741 if (conn->aio_write_behind_list &&
742 is_in_path(smb_fname->base_name, conn->aio_write_behind_list,
743 conn->case_sensitive)) {
744 fsp->aio_write_behind = True;
747 fsp->wcp = NULL; /* Write cache pointer. */
749 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
750 conn->session_info->unix_info->unix_name,
751 smb_fname_str_dbg(smb_fname),
752 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
753 conn->num_files_open));
759 /****************************************************************************
760 Check if we can open a file with a share mode.
761 Returns True if conflict, False if not.
762 ****************************************************************************/
764 static bool share_conflict(struct share_mode_entry *entry,
768 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
769 "entry->share_access = 0x%x, "
770 "entry->private_options = 0x%x\n",
771 (unsigned int)entry->access_mask,
772 (unsigned int)entry->share_access,
773 (unsigned int)entry->private_options));
775 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
776 (unsigned int)access_mask, (unsigned int)share_access));
778 if ((entry->access_mask & (FILE_WRITE_DATA|
782 DELETE_ACCESS)) == 0) {
783 DEBUG(10,("share_conflict: No conflict due to "
784 "entry->access_mask = 0x%x\n",
785 (unsigned int)entry->access_mask ));
789 if ((access_mask & (FILE_WRITE_DATA|
793 DELETE_ACCESS)) == 0) {
794 DEBUG(10,("share_conflict: No conflict due to "
795 "access_mask = 0x%x\n",
796 (unsigned int)access_mask ));
800 #if 1 /* JRA TEST - Superdebug. */
801 #define CHECK_MASK(num, am, right, sa, share) \
802 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
803 (unsigned int)(num), (unsigned int)(am), \
804 (unsigned int)(right), (unsigned int)(am)&(right) )); \
805 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
806 (unsigned int)(num), (unsigned int)(sa), \
807 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
808 if (((am) & (right)) && !((sa) & (share))) { \
809 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
810 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
811 (unsigned int)(share) )); \
815 #define CHECK_MASK(num, am, right, sa, share) \
816 if (((am) & (right)) && !((sa) & (share))) { \
817 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
818 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
819 (unsigned int)(share) )); \
824 CHECK_MASK(1, entry->access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
825 share_access, FILE_SHARE_WRITE);
826 CHECK_MASK(2, access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
827 entry->share_access, FILE_SHARE_WRITE);
829 CHECK_MASK(3, entry->access_mask, FILE_READ_DATA | FILE_EXECUTE,
830 share_access, FILE_SHARE_READ);
831 CHECK_MASK(4, access_mask, FILE_READ_DATA | FILE_EXECUTE,
832 entry->share_access, FILE_SHARE_READ);
834 CHECK_MASK(5, entry->access_mask, DELETE_ACCESS,
835 share_access, FILE_SHARE_DELETE);
836 CHECK_MASK(6, access_mask, DELETE_ACCESS,
837 entry->share_access, FILE_SHARE_DELETE);
839 DEBUG(10,("share_conflict: No conflict.\n"));
843 #if defined(DEVELOPER)
844 static void validate_my_share_entries(struct smbd_server_connection *sconn,
846 struct share_mode_entry *share_entry)
850 if (!procid_is_me(&share_entry->pid)) {
854 if (is_deferred_open_entry(share_entry) &&
855 !open_was_deferred(sconn, share_entry->op_mid)) {
856 char *str = talloc_asprintf(talloc_tos(),
857 "Got a deferred entry without a request: "
859 share_mode_str(talloc_tos(), num, share_entry));
863 if (!is_valid_share_mode_entry(share_entry)) {
867 fsp = file_find_dif(sconn, share_entry->id,
868 share_entry->share_file_id);
870 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
871 share_mode_str(talloc_tos(), num, share_entry) ));
872 smb_panic("validate_my_share_entries: Cannot match a "
873 "share entry with an open file\n");
876 if (is_deferred_open_entry(share_entry) ||
877 is_unused_share_mode_entry(share_entry)) {
881 if ((share_entry->op_type == NO_OPLOCK) &&
882 (fsp->oplock_type == FAKE_LEVEL_II_OPLOCK)) {
883 /* Someone has already written to it, but I haven't yet
888 if (((uint16)fsp->oplock_type) != share_entry->op_type) {
897 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
898 share_mode_str(talloc_tos(), num, share_entry) ));
899 str = talloc_asprintf(talloc_tos(),
900 "validate_my_share_entries: "
901 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
902 fsp->fsp_name->base_name,
903 (unsigned int)fsp->oplock_type,
904 (unsigned int)share_entry->op_type );
910 bool is_stat_open(uint32 access_mask)
912 return (access_mask &&
913 ((access_mask & ~(SYNCHRONIZE_ACCESS| FILE_READ_ATTRIBUTES|
914 FILE_WRITE_ATTRIBUTES))==0) &&
915 ((access_mask & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|
916 FILE_WRITE_ATTRIBUTES)) != 0));
919 /****************************************************************************
920 Deal with share modes
921 Invarient: Share mode must be locked on entry and exit.
922 Returns -1 on error, or number of share modes on success (may be zero).
923 ****************************************************************************/
925 static NTSTATUS open_mode_check(connection_struct *conn,
926 struct share_mode_lock *lck,
930 uint32 create_options,
935 if(lck->num_share_modes == 0) {
939 *file_existed = True;
941 /* A delete on close prohibits everything */
943 if (is_delete_on_close_set(lck, name_hash)) {
944 return NT_STATUS_DELETE_PENDING;
947 if (is_stat_open(access_mask)) {
948 /* Stat open that doesn't trigger oplock breaks or share mode
949 * checks... ! JRA. */
954 * Check if the share modes will give us access.
957 #if defined(DEVELOPER)
958 for(i = 0; i < lck->num_share_modes; i++) {
959 validate_my_share_entries(conn->sconn, i,
960 &lck->share_modes[i]);
964 if (!lp_share_modes(SNUM(conn))) {
968 /* Now we check the share modes, after any oplock breaks. */
969 for(i = 0; i < lck->num_share_modes; i++) {
971 if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
975 /* someone else has a share lock on it, check to see if we can
977 if (share_conflict(&lck->share_modes[i],
978 access_mask, share_access)) {
979 return NT_STATUS_SHARING_VIOLATION;
986 static bool is_delete_request(files_struct *fsp) {
987 return ((fsp->access_mask == DELETE_ACCESS) &&
988 (fsp->oplock_type == NO_OPLOCK));
992 * Send a break message to the oplock holder and delay the open for
996 static NTSTATUS send_break_message(files_struct *fsp,
997 struct share_mode_entry *exclusive,
1002 char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
1004 DEBUG(10, ("Sending break request to PID %s\n",
1005 procid_str_static(&exclusive->pid)));
1006 exclusive->op_mid = mid;
1008 /* Create the message. */
1009 share_mode_entry_to_message(msg, exclusive);
1011 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1012 don't want this set in the share mode struct pointed to by lck. */
1014 if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
1015 SSVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET,
1016 exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
1019 status = messaging_send_buf(fsp->conn->sconn->msg_ctx, exclusive->pid,
1020 MSG_SMB_BREAK_REQUEST,
1022 MSG_SMB_SHARE_MODE_ENTRY_SIZE);
1023 if (!NT_STATUS_IS_OK(status)) {
1024 DEBUG(3, ("Could not send oplock break message: %s\n",
1025 nt_errstr(status)));
1032 * Return share_mode_entry pointers for :
1033 * 1). Batch oplock entry.
1034 * 2). Batch or exclusive oplock entry (may be identical to #1).
1035 * bool have_level2_oplock
1036 * bool have_no_oplock.
1037 * Do internal consistency checks on the share mode for a file.
1040 static void find_oplock_types(files_struct *fsp,
1042 struct share_mode_lock *lck,
1043 struct share_mode_entry **pp_batch,
1044 struct share_mode_entry **pp_ex_or_batch,
1046 bool *got_no_oplock)
1051 *pp_ex_or_batch = NULL;
1052 *got_level2 = false;
1053 *got_no_oplock = false;
1055 /* Ignore stat or internal opens, as is done in
1056 delay_for_batch_oplocks() and
1057 delay_for_exclusive_oplocks().
1059 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1063 for (i=0; i<lck->num_share_modes; i++) {
1064 if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
1068 if (lck->share_modes[i].op_type == NO_OPLOCK &&
1069 is_stat_open(lck->share_modes[i].access_mask)) {
1070 /* We ignore stat opens in the table - they
1071 always have NO_OPLOCK and never get or
1072 cause breaks. JRA. */
1076 if (BATCH_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
1077 /* batch - can only be one. */
1078 if (*pp_ex_or_batch || *pp_batch || *got_level2 || *got_no_oplock) {
1079 smb_panic("Bad batch oplock entry.");
1081 *pp_batch = &lck->share_modes[i];
1084 if (EXCLUSIVE_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
1085 /* Exclusive or batch - can only be one. */
1086 if (*pp_ex_or_batch || *got_level2 || *got_no_oplock) {
1087 smb_panic("Bad exclusive or batch oplock entry.");
1089 *pp_ex_or_batch = &lck->share_modes[i];
1092 if (LEVEL_II_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
1093 if (*pp_batch || *pp_ex_or_batch) {
1094 smb_panic("Bad levelII oplock entry.");
1099 if (lck->share_modes[i].op_type == NO_OPLOCK) {
1100 if (*pp_batch || *pp_ex_or_batch) {
1101 smb_panic("Bad no oplock entry.");
1103 *got_no_oplock = true;
1108 static bool delay_for_batch_oplocks(files_struct *fsp,
1111 struct share_mode_entry *batch_entry)
1113 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1117 if (batch_entry != NULL) {
1118 /* Found a batch oplock */
1119 send_break_message(fsp, batch_entry, mid, oplock_request);
1125 static bool delay_for_exclusive_oplocks(files_struct *fsp,
1128 struct share_mode_entry *ex_entry)
1130 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1134 if (ex_entry != NULL) {
1135 /* Found an exclusive or batch oplock */
1136 bool delay_it = is_delete_request(fsp) ?
1137 BATCH_OPLOCK_TYPE(ex_entry->op_type) : true;
1139 send_break_message(fsp, ex_entry, mid, oplock_request);
1146 static void grant_fsp_oplock_type(files_struct *fsp,
1147 const struct byte_range_lock *br_lck,
1149 bool got_level2_oplock,
1150 bool got_a_none_oplock)
1152 bool allow_level2 = (global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
1153 lp_level2_oplocks(SNUM(fsp->conn));
1155 /* Start by granting what the client asked for,
1156 but ensure no SAMBA_PRIVATE bits can be set. */
1157 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
1159 if (oplock_request & INTERNAL_OPEN_ONLY) {
1160 /* No oplocks on internal open. */
1161 fsp->oplock_type = NO_OPLOCK;
1162 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1163 fsp->oplock_type, fsp_str_dbg(fsp)));
1165 } else if (br_lck && br_lck->num_locks > 0) {
1166 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1168 fsp->oplock_type = NO_OPLOCK;
1171 if (is_stat_open(fsp->access_mask)) {
1172 /* Leave the value already set. */
1173 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1174 fsp->oplock_type, fsp_str_dbg(fsp)));
1179 * Match what was requested (fsp->oplock_type) with
1180 * what was found in the existing share modes.
1183 if (got_a_none_oplock) {
1184 fsp->oplock_type = NO_OPLOCK;
1185 } else if (got_level2_oplock) {
1186 if (fsp->oplock_type == NO_OPLOCK ||
1187 fsp->oplock_type == FAKE_LEVEL_II_OPLOCK) {
1188 /* Store a level2 oplock, but don't tell the client */
1189 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1191 fsp->oplock_type = LEVEL_II_OPLOCK;
1194 /* All share_mode_entries are placeholders or deferred.
1195 * Silently upgrade to fake levelII if the client didn't
1196 * ask for an oplock. */
1197 if (fsp->oplock_type == NO_OPLOCK) {
1198 /* Store a level2 oplock, but don't tell the client */
1199 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1204 * Don't grant level2 to clients that don't want them
1205 * or if we've turned them off.
1207 if (fsp->oplock_type == LEVEL_II_OPLOCK && !allow_level2) {
1208 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1211 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1212 fsp->oplock_type, fsp_str_dbg(fsp)));
1215 bool request_timed_out(struct timeval request_time,
1216 struct timeval timeout)
1218 struct timeval now, end_time;
1220 end_time = timeval_sum(&request_time, &timeout);
1221 return (timeval_compare(&end_time, &now) < 0);
1224 /****************************************************************************
1225 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1226 ****************************************************************************/
1228 static void defer_open(struct share_mode_lock *lck,
1229 struct timeval request_time,
1230 struct timeval timeout,
1231 struct smb_request *req,
1232 struct deferred_open_record *state)
1236 /* Paranoia check */
1238 for (i=0; i<lck->num_share_modes; i++) {
1239 struct share_mode_entry *e = &lck->share_modes[i];
1241 if (!is_deferred_open_entry(e)) {
1245 if (procid_is_me(&e->pid) && (e->op_mid == req->mid)) {
1246 DEBUG(0, ("Trying to defer an already deferred "
1247 "request: mid=%llu, exiting\n",
1248 (unsigned long long)req->mid));
1249 exit_server("attempt to defer a deferred request");
1253 /* End paranoia check */
1255 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1256 "open entry for mid %llu\n",
1257 (unsigned int)request_time.tv_sec,
1258 (unsigned int)request_time.tv_usec,
1259 (unsigned long long)req->mid));
1261 if (!push_deferred_open_message_smb(req, request_time, timeout,
1262 state->id, (char *)state, sizeof(*state))) {
1263 exit_server("push_deferred_open_message_smb failed");
1265 add_deferred_open(lck, req->mid, request_time,
1266 sconn_server_id(req->sconn), state->id);
1270 /****************************************************************************
1271 On overwrite open ensure that the attributes match.
1272 ****************************************************************************/
1274 bool open_match_attributes(connection_struct *conn,
1275 uint32 old_dos_attr,
1276 uint32 new_dos_attr,
1277 mode_t existing_unx_mode,
1278 mode_t new_unx_mode,
1279 mode_t *returned_unx_mode)
1281 uint32 noarch_old_dos_attr, noarch_new_dos_attr;
1283 noarch_old_dos_attr = (old_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1284 noarch_new_dos_attr = (new_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1286 if((noarch_old_dos_attr == 0 && noarch_new_dos_attr != 0) ||
1287 (noarch_old_dos_attr != 0 && ((noarch_old_dos_attr & noarch_new_dos_attr) == noarch_old_dos_attr))) {
1288 *returned_unx_mode = new_unx_mode;
1290 *returned_unx_mode = (mode_t)0;
1293 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1294 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1295 "returned_unx_mode = 0%o\n",
1296 (unsigned int)old_dos_attr,
1297 (unsigned int)existing_unx_mode,
1298 (unsigned int)new_dos_attr,
1299 (unsigned int)*returned_unx_mode ));
1301 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1302 if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1303 if ((old_dos_attr & FILE_ATTRIBUTE_SYSTEM) &&
1304 !(new_dos_attr & FILE_ATTRIBUTE_SYSTEM)) {
1308 if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1309 if ((old_dos_attr & FILE_ATTRIBUTE_HIDDEN) &&
1310 !(new_dos_attr & FILE_ATTRIBUTE_HIDDEN)) {
1317 /****************************************************************************
1318 Special FCB or DOS processing in the case of a sharing violation.
1319 Try and find a duplicated file handle.
1320 ****************************************************************************/
1322 NTSTATUS fcb_or_dos_open(struct smb_request *req,
1323 connection_struct *conn,
1324 files_struct *fsp_to_dup_into,
1325 const struct smb_filename *smb_fname,
1330 uint32 share_access,
1331 uint32 create_options)
1335 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1336 "file %s.\n", smb_fname_str_dbg(smb_fname)));
1338 for(fsp = file_find_di_first(conn->sconn, id); fsp;
1339 fsp = file_find_di_next(fsp)) {
1341 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1342 "vuid = %u, file_pid = %u, private_options = 0x%x "
1343 "access_mask = 0x%x\n", fsp_str_dbg(fsp),
1344 fsp->fh->fd, (unsigned int)fsp->vuid,
1345 (unsigned int)fsp->file_pid,
1346 (unsigned int)fsp->fh->private_options,
1347 (unsigned int)fsp->access_mask ));
1349 if (fsp->fh->fd != -1 &&
1350 fsp->vuid == vuid &&
1351 fsp->file_pid == file_pid &&
1352 (fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
1353 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
1354 (fsp->access_mask & FILE_WRITE_DATA) &&
1355 strequal(fsp->fsp_name->base_name, smb_fname->base_name) &&
1356 strequal(fsp->fsp_name->stream_name,
1357 smb_fname->stream_name)) {
1358 DEBUG(10,("fcb_or_dos_open: file match\n"));
1364 return NT_STATUS_NOT_FOUND;
1367 /* quite an insane set of semantics ... */
1368 if (is_executable(smb_fname->base_name) &&
1369 (fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
1370 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1371 return NT_STATUS_INVALID_PARAMETER;
1374 /* We need to duplicate this fsp. */
1375 return dup_file_fsp(req, fsp, access_mask, share_access,
1376 create_options, fsp_to_dup_into);
1379 static void schedule_defer_open(struct share_mode_lock *lck,
1380 struct timeval request_time,
1381 struct smb_request *req)
1383 struct deferred_open_record state;
1385 /* This is a relative time, added to the absolute
1386 request_time value to get the absolute timeout time.
1387 Note that if this is the second or greater time we enter
1388 this codepath for this particular request mid then
1389 request_time is left as the absolute time of the *first*
1390 time this request mid was processed. This is what allows
1391 the request to eventually time out. */
1393 struct timeval timeout;
1395 /* Normally the smbd we asked should respond within
1396 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1397 * the client did, give twice the timeout as a safety
1398 * measure here in case the other smbd is stuck
1399 * somewhere else. */
1401 timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
1403 /* Nothing actually uses state.delayed_for_oplocks
1404 but it's handy to differentiate in debug messages
1405 between a 30 second delay due to oplock break, and
1406 a 1 second delay for share mode conflicts. */
1408 state.delayed_for_oplocks = True;
1411 if (!request_timed_out(request_time, timeout)) {
1412 defer_open(lck, request_time, timeout, req, &state);
1416 /****************************************************************************
1417 Work out what access_mask to use from what the client sent us.
1418 ****************************************************************************/
1420 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
1421 const struct smb_filename *smb_fname,
1423 uint32_t access_mask,
1424 uint32_t *access_mask_out)
1427 uint32_t orig_access_mask = access_mask;
1428 uint32_t rejected_share_access;
1431 * Convert GENERIC bits to specific bits.
1434 se_map_generic(&access_mask, &file_generic_mapping);
1436 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1437 if (access_mask & MAXIMUM_ALLOWED_ACCESS) {
1440 struct security_descriptor *sd;
1441 uint32_t access_granted = 0;
1443 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
1448 if (!NT_STATUS_IS_OK(status)) {
1449 DEBUG(10,("smbd_calculate_access_mask: "
1450 "Could not get acl on file %s: %s\n",
1451 smb_fname_str_dbg(smb_fname),
1452 nt_errstr(status)));
1453 return NT_STATUS_ACCESS_DENIED;
1456 status = smb1_file_se_access_check(conn,
1458 get_current_nttok(conn),
1464 if (!NT_STATUS_IS_OK(status)) {
1465 DEBUG(10, ("smbd_calculate_access_mask: "
1466 "Access denied on file %s: "
1467 "when calculating maximum access\n",
1468 smb_fname_str_dbg(smb_fname)));
1469 return NT_STATUS_ACCESS_DENIED;
1472 access_mask = access_granted;
1474 access_mask = FILE_GENERIC_ALL;
1477 access_mask &= conn->share_access;
1480 rejected_share_access = access_mask & ~(conn->share_access);
1482 if (rejected_share_access) {
1483 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1484 "file %s: rejected by share access mask[0x%08X] "
1485 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1486 smb_fname_str_dbg(smb_fname),
1488 orig_access_mask, access_mask,
1489 rejected_share_access));
1490 return NT_STATUS_ACCESS_DENIED;
1493 *access_mask_out = access_mask;
1494 return NT_STATUS_OK;
1497 /****************************************************************************
1498 Remove the deferred open entry under lock.
1499 ****************************************************************************/
1501 void remove_deferred_open_entry(struct file_id id, uint64_t mid,
1502 struct server_id pid)
1504 struct share_mode_lock *lck = get_share_mode_lock(talloc_tos(), id,
1507 DEBUG(0, ("could not get share mode lock\n"));
1509 del_deferred_open_entry(lck, mid, pid);
1514 /****************************************************************
1515 Ensure we get the brlock lock followed by the share mode lock
1516 in the correct order to prevent deadlocks if other smbd's are
1517 using the brlock database on this file simultaneously with this open
1518 (that code also gets the locks in brlock -> share mode lock order).
1519 ****************************************************************/
1521 static bool acquire_ordered_locks(TALLOC_CTX *mem_ctx,
1523 const struct file_id id,
1524 const char *connectpath,
1525 const struct smb_filename *smb_fname,
1526 const struct timespec *p_old_write_time,
1527 struct share_mode_lock **p_lck,
1528 struct byte_range_lock **p_br_lck)
1530 /* Ordering - we must get the br_lck for this
1531 file before the share mode. */
1532 if (lp_locking(fsp->conn->params)) {
1533 *p_br_lck = brl_get_locks_readonly(fsp);
1534 if (*p_br_lck == NULL) {
1535 DEBUG(0, ("Could not get br_lock\n"));
1538 /* Note - we don't need to free the returned
1539 br_lck explicitly as it was allocated on talloc_tos()
1540 and so will be autofreed (and release the lock)
1541 once the frame context disappears.
1543 If it was set to fsp->brlock_rec then it was
1544 talloc_move'd to hang off the fsp pointer and
1545 in this case is guarenteed to not be holding the
1546 lock on the brlock database. */
1549 *p_lck = get_share_mode_lock(mem_ctx,
1555 if (*p_lck == NULL) {
1556 DEBUG(0, ("Could not get share mode lock\n"));
1557 TALLOC_FREE(*p_br_lck);
1563 /****************************************************************************
1564 Open a file with a share mode. Passed in an already created files_struct *.
1565 ****************************************************************************/
1567 static NTSTATUS open_file_ntcreate(connection_struct *conn,
1568 struct smb_request *req,
1569 uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
1570 uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
1571 uint32 create_disposition, /* FILE_OPEN_IF etc. */
1572 uint32 create_options, /* options such as delete on close. */
1573 uint32 new_dos_attributes, /* attributes used for new file. */
1574 int oplock_request, /* internal Samba oplock codes. */
1575 /* Information (FILE_EXISTS etc.) */
1576 uint32_t private_flags, /* Samba specific flags. */
1580 struct smb_filename *smb_fname = fsp->fsp_name;
1583 bool file_existed = VALID_STAT(smb_fname->st);
1584 bool def_acl = False;
1585 bool posix_open = False;
1586 bool new_file_created = False;
1587 bool clear_ads = false;
1589 NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
1590 mode_t new_unx_mode = (mode_t)0;
1591 mode_t unx_mode = (mode_t)0;
1593 uint32 existing_dos_attributes = 0;
1594 struct timeval request_time = timeval_zero();
1595 struct share_mode_lock *lck = NULL;
1596 uint32 open_access_mask = access_mask;
1602 if (conn->printer) {
1604 * Printers are handled completely differently.
1605 * Most of the passed parameters are ignored.
1609 *pinfo = FILE_WAS_CREATED;
1612 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1613 smb_fname_str_dbg(smb_fname)));
1616 DEBUG(0,("open_file_ntcreate: printer open without "
1617 "an SMB request!\n"));
1618 return NT_STATUS_INTERNAL_ERROR;
1621 return print_spool_open(fsp, smb_fname->base_name,
1625 if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
1627 return NT_STATUS_NO_MEMORY;
1630 if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1632 unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
1633 new_dos_attributes = 0;
1635 /* Windows allows a new file to be created and
1636 silently removes a FILE_ATTRIBUTE_DIRECTORY
1637 sent by the client. Do the same. */
1639 new_dos_attributes &= ~FILE_ATTRIBUTE_DIRECTORY;
1641 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1643 unx_mode = unix_mode(conn, new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
1644 smb_fname, parent_dir);
1647 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1648 "access_mask=0x%x share_access=0x%x "
1649 "create_disposition = 0x%x create_options=0x%x "
1650 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1651 smb_fname_str_dbg(smb_fname), new_dos_attributes,
1652 access_mask, share_access, create_disposition,
1653 create_options, (unsigned int)unx_mode, oplock_request,
1654 (unsigned int)private_flags));
1656 if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
1657 DEBUG(0, ("No smb request but not an internal only open!\n"));
1658 return NT_STATUS_INTERNAL_ERROR;
1662 * Only non-internal opens can be deferred at all
1667 if (get_deferred_open_message_state(req,
1671 struct deferred_open_record *state = (struct deferred_open_record *)ptr;
1672 /* Remember the absolute time of the original
1673 request with this mid. We'll use it later to
1674 see if this has timed out. */
1676 /* Remove the deferred open entry under lock. */
1677 remove_deferred_open_entry(
1678 state->id, req->mid,
1679 sconn_server_id(req->sconn));
1681 /* Ensure we don't reprocess this message. */
1682 remove_deferred_open_message_smb(req->sconn, req->mid);
1686 status = check_name(conn, smb_fname->base_name);
1687 if (!NT_STATUS_IS_OK(status)) {
1692 new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
1694 existing_dos_attributes = dos_mode(conn, smb_fname);
1698 /* ignore any oplock requests if oplocks are disabled */
1699 if (!lp_oplocks(SNUM(conn)) ||
1700 IS_VETO_OPLOCK_PATH(conn, smb_fname->base_name)) {
1701 /* Mask off everything except the private Samba bits. */
1702 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
1705 /* this is for OS/2 long file names - say we don't support them */
1706 if (!lp_posix_pathnames() && strstr(smb_fname->base_name,".+,;=[].")) {
1707 /* OS/2 Workplace shell fix may be main code stream in a later
1709 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
1711 if (use_nt_status()) {
1712 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1714 return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
1717 switch( create_disposition ) {
1719 * Currently we're using FILE_SUPERSEDE as the same as
1720 * FILE_OVERWRITE_IF but they really are
1721 * different. FILE_SUPERSEDE deletes an existing file
1722 * (requiring delete access) then recreates it.
1724 case FILE_SUPERSEDE:
1725 /* If file exists replace/overwrite. If file doesn't
1727 flags2 |= (O_CREAT | O_TRUNC);
1731 case FILE_OVERWRITE_IF:
1732 /* If file exists replace/overwrite. If file doesn't
1734 flags2 |= (O_CREAT | O_TRUNC);
1739 /* If file exists open. If file doesn't exist error. */
1740 if (!file_existed) {
1741 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
1742 "requested for file %s and file "
1744 smb_fname_str_dbg(smb_fname)));
1746 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1750 case FILE_OVERWRITE:
1751 /* If file exists overwrite. If file doesn't exist
1753 if (!file_existed) {
1754 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
1755 "requested for file %s and file "
1757 smb_fname_str_dbg(smb_fname) ));
1759 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1766 /* If file exists error. If file doesn't exist
1769 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
1770 "requested for file %s and file "
1771 "already exists.\n",
1772 smb_fname_str_dbg(smb_fname)));
1773 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
1778 return map_nt_error_from_unix(errno);
1780 flags2 |= (O_CREAT|O_EXCL);
1784 /* If file exists open. If file doesn't exist
1790 return NT_STATUS_INVALID_PARAMETER;
1793 /* We only care about matching attributes on file exists and
1796 if (!posix_open && file_existed && ((create_disposition == FILE_OVERWRITE) ||
1797 (create_disposition == FILE_OVERWRITE_IF))) {
1798 if (!open_match_attributes(conn, existing_dos_attributes,
1800 smb_fname->st.st_ex_mode,
1801 unx_mode, &new_unx_mode)) {
1802 DEBUG(5,("open_file_ntcreate: attributes missmatch "
1803 "for file %s (%x %x) (0%o, 0%o)\n",
1804 smb_fname_str_dbg(smb_fname),
1805 existing_dos_attributes,
1807 (unsigned int)smb_fname->st.st_ex_mode,
1808 (unsigned int)unx_mode ));
1810 return NT_STATUS_ACCESS_DENIED;
1814 status = smbd_calculate_access_mask(conn, smb_fname, file_existed,
1817 if (!NT_STATUS_IS_OK(status)) {
1818 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
1819 "on file %s returned %s\n",
1820 smb_fname_str_dbg(smb_fname), nt_errstr(status)));
1824 open_access_mask = access_mask;
1826 if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1827 open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
1830 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
1831 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname),
1835 * Note that we ignore the append flag as append does not
1836 * mean the same thing under DOS and Unix.
1839 if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
1840 (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1841 /* DENY_DOS opens are always underlying read-write on the
1842 file handle, no matter what the requested access mask
1844 if ((private_flags & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
1845 access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|FILE_READ_EA|FILE_EXECUTE)) {
1855 * Currently we only look at FILE_WRITE_THROUGH for create options.
1859 if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
1864 if (posix_open && (access_mask & FILE_APPEND_DATA)) {
1868 if (!posix_open && !CAN_WRITE(conn)) {
1870 * We should really return a permission denied error if either
1871 * O_CREAT or O_TRUNC are set, but for compatibility with
1872 * older versions of Samba we just AND them out.
1874 flags2 &= ~(O_CREAT|O_TRUNC);
1878 * Ensure we can't write on a read-only share or file.
1881 if (flags != O_RDONLY && file_existed &&
1882 (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
1883 DEBUG(5,("open_file_ntcreate: write access requested for "
1884 "file %s on read only %s\n",
1885 smb_fname_str_dbg(smb_fname),
1886 !CAN_WRITE(conn) ? "share" : "file" ));
1888 return NT_STATUS_ACCESS_DENIED;
1891 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
1892 fsp->share_access = share_access;
1893 fsp->fh->private_options = private_flags;
1894 fsp->access_mask = open_access_mask; /* We change this to the
1895 * requested access_mask after
1896 * the open is done. */
1897 fsp->posix_open = posix_open;
1899 /* Ensure no SAMBA_PRIVATE bits can be set. */
1900 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
1902 if (timeval_is_zero(&request_time)) {
1903 request_time = fsp->open_time;
1907 struct byte_range_lock *br_lck = NULL;
1908 struct share_mode_entry *batch_entry = NULL;
1909 struct share_mode_entry *exclusive_entry = NULL;
1910 bool got_level2_oplock = false;
1911 bool got_a_none_oplock = false;
1913 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
1914 id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
1916 if (!acquire_ordered_locks(talloc_tos(),
1924 return NT_STATUS_SHARING_VIOLATION;
1927 /* Get the types we need to examine. */
1928 find_oplock_types(fsp,
1934 &got_a_none_oplock);
1936 /* First pass - send break only on batch oplocks. */
1937 if ((req != NULL) &&
1938 delay_for_batch_oplocks(fsp,
1942 schedule_defer_open(lck, request_time, req);
1944 return NT_STATUS_SHARING_VIOLATION;
1947 /* Use the client requested access mask here, not the one we
1949 status = open_mode_check(conn, lck, fsp->name_hash,
1950 access_mask, share_access,
1951 create_options, &file_existed);
1953 if (NT_STATUS_IS_OK(status)) {
1954 /* We might be going to allow this open. Check oplock
1956 /* Second pass - send break for both batch or
1957 * exclusive oplocks. */
1958 if ((req != NULL) &&
1959 delay_for_exclusive_oplocks(
1964 schedule_defer_open(lck, request_time, req);
1966 return NT_STATUS_SHARING_VIOLATION;
1970 if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
1971 /* DELETE_PENDING is not deferred for a second */
1976 grant_fsp_oplock_type(fsp,
1982 if (!NT_STATUS_IS_OK(status)) {
1983 uint32 can_access_mask;
1984 bool can_access = True;
1986 SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
1988 /* Check if this can be done with the deny_dos and fcb
1991 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
1992 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
1994 DEBUG(0, ("DOS open without an SMB "
1997 return NT_STATUS_INTERNAL_ERROR;
2000 /* Use the client requested access mask here,
2001 * not the one we open with. */
2002 status = fcb_or_dos_open(req,
2013 if (NT_STATUS_IS_OK(status)) {
2016 *pinfo = FILE_WAS_OPENED;
2018 return NT_STATUS_OK;
2023 * This next line is a subtlety we need for
2024 * MS-Access. If a file open will fail due to share
2025 * permissions and also for security (access) reasons,
2026 * we need to return the access failed error, not the
2027 * share error. We can't open the file due to kernel
2028 * oplock deadlock (it's possible we failed above on
2029 * the open_mode_check()) so use a userspace check.
2032 if (flags & O_RDWR) {
2033 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
2034 } else if (flags & O_WRONLY) {
2035 can_access_mask = FILE_WRITE_DATA;
2037 can_access_mask = FILE_READ_DATA;
2040 if (((can_access_mask & FILE_WRITE_DATA) &&
2041 !CAN_WRITE(conn)) ||
2042 !can_access_file_data(conn, smb_fname,
2048 * If we're returning a share violation, ensure we
2049 * cope with the braindead 1 second delay.
2052 if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
2053 lp_defer_sharing_violations()) {
2054 struct timeval timeout;
2055 struct deferred_open_record state;
2058 /* this is a hack to speed up torture tests
2060 timeout_usecs = lp_parm_int(SNUM(conn),
2061 "smbd","sharedelay",
2062 SHARING_VIOLATION_USEC_WAIT);
2064 /* This is a relative time, added to the absolute
2065 request_time value to get the absolute timeout time.
2066 Note that if this is the second or greater time we enter
2067 this codepath for this particular request mid then
2068 request_time is left as the absolute time of the *first*
2069 time this request mid was processed. This is what allows
2070 the request to eventually time out. */
2072 timeout = timeval_set(0, timeout_usecs);
2074 /* Nothing actually uses state.delayed_for_oplocks
2075 but it's handy to differentiate in debug messages
2076 between a 30 second delay due to oplock break, and
2077 a 1 second delay for share mode conflicts. */
2079 state.delayed_for_oplocks = False;
2083 && !request_timed_out(request_time,
2085 defer_open(lck, request_time, timeout,
2093 * We have detected a sharing violation here
2094 * so return the correct error code
2096 status = NT_STATUS_SHARING_VIOLATION;
2098 status = NT_STATUS_ACCESS_DENIED;
2104 * We exit this block with the share entry *locked*.....
2108 SMB_ASSERT(!file_existed || (lck != NULL));
2111 * Ensure we pay attention to default ACLs on directories if required.
2114 if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
2115 (def_acl = directory_has_default_acl(conn, parent_dir))) {
2116 unx_mode = (0777 & lp_create_mask(SNUM(conn)));
2119 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2120 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2121 (unsigned int)flags, (unsigned int)flags2,
2122 (unsigned int)unx_mode, (unsigned int)access_mask,
2123 (unsigned int)open_access_mask));
2126 * open_file strips any O_TRUNC flags itself.
2129 fsp_open = open_file(fsp, conn, req, parent_dir,
2130 flags|flags2, unx_mode, access_mask,
2133 if (!NT_STATUS_IS_OK(fsp_open)) {
2138 if (!file_existed) {
2139 struct byte_range_lock *br_lck = NULL;
2140 struct share_mode_entry *batch_entry = NULL;
2141 struct share_mode_entry *exclusive_entry = NULL;
2142 bool got_level2_oplock = false;
2143 bool got_a_none_oplock = false;
2144 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
2146 * Deal with the race condition where two smbd's detect the
2147 * file doesn't exist and do the create at the same time. One
2148 * of them will win and set a share mode, the other (ie. this
2149 * one) should check if the requested share mode for this
2150 * create is allowed.
2154 * Now the file exists and fsp is successfully opened,
2155 * fsp->dev and fsp->inode are valid and should replace the
2156 * dev=0,inode=0 from a non existent file. Spotted by
2157 * Nadav Danieli <nadavd@exanet.com>. JRA.
2162 if (!acquire_ordered_locks(talloc_tos(),
2170 return NT_STATUS_SHARING_VIOLATION;
2173 /* Get the types we need to examine. */
2174 find_oplock_types(fsp,
2180 &got_a_none_oplock);
2182 /* First pass - send break only on batch oplocks. */
2183 if ((req != NULL) &&
2184 delay_for_batch_oplocks(fsp,
2188 schedule_defer_open(lck, request_time, req);
2191 return NT_STATUS_SHARING_VIOLATION;
2194 status = open_mode_check(conn, lck, fsp->name_hash,
2195 access_mask, share_access,
2196 create_options, &file_existed);
2198 if (NT_STATUS_IS_OK(status)) {
2199 /* We might be going to allow this open. Check oplock
2201 /* Second pass - send break for both batch or
2202 * exclusive oplocks. */
2203 if ((req != NULL) &&
2204 delay_for_exclusive_oplocks(
2209 schedule_defer_open(lck, request_time, req);
2212 return NT_STATUS_SHARING_VIOLATION;
2216 if (!NT_STATUS_IS_OK(status)) {
2217 struct deferred_open_record state;
2219 state.delayed_for_oplocks = False;
2222 /* Do it all over again immediately. In the second
2223 * round we will find that the file existed and handle
2224 * the DELETE_PENDING and FCB cases correctly. No need
2225 * to duplicate the code here. Essentially this is a
2226 * "goto top of this function", but don't tell
2230 defer_open(lck, request_time, timeval_zero(),
2238 grant_fsp_oplock_type(fsp,
2245 * We exit this block with the share entry *locked*.....
2250 SMB_ASSERT(lck != NULL);
2252 /* Delete streams if create_disposition requires it */
2253 if (file_existed && clear_ads &&
2254 !is_ntfs_stream_smb_fname(smb_fname)) {
2255 status = delete_all_streams(conn, smb_fname->base_name);
2256 if (!NT_STATUS_IS_OK(status)) {
2263 /* note that we ignore failure for the following. It is
2264 basically a hack for NFS, and NFS will never set one of
2265 these only read them. Nobody but Samba can ever set a deny
2266 mode and we have already checked our more authoritative
2267 locking database for permission to set this deny mode. If
2268 the kernel refuses the operations then the kernel is wrong.
2269 note that GPFS supports it as well - jmcd */
2271 if (fsp->fh->fd != -1) {
2273 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
2274 if(ret_flock == -1 ){
2279 return NT_STATUS_SHARING_VIOLATION;
2284 * At this point onwards, we can guarentee that the share entry
2285 * is locked, whether we created the file or not, and that the
2286 * deny mode is compatible with all current opens.
2290 * If requested, truncate the file.
2293 if (file_existed && (flags2&O_TRUNC)) {
2295 * We are modifing the file after open - update the stat
2298 if ((SMB_VFS_FTRUNCATE(fsp, 0) == -1) ||
2299 (SMB_VFS_FSTAT(fsp, &smb_fname->st)==-1)) {
2300 status = map_nt_error_from_unix(errno);
2308 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2309 * but we don't have to store this - just ignore it on access check.
2311 if (conn->sconn->using_smb2) {
2313 * SMB2 doesn't return it (according to Microsoft tests).
2314 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2315 * File created with access = 0x7 (Read, Write, Delete)
2316 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2318 fsp->access_mask = access_mask;
2320 /* But SMB1 does. */
2321 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2325 /* stat opens on existing files don't get oplocks. */
2326 if (is_stat_open(open_access_mask)) {
2327 fsp->oplock_type = NO_OPLOCK;
2330 if (!(flags2 & O_TRUNC)) {
2331 info = FILE_WAS_OPENED;
2333 info = FILE_WAS_OVERWRITTEN;
2336 info = FILE_WAS_CREATED;
2344 * Setup the oplock info in both the shared memory and
2348 if (!set_file_oplock(fsp, fsp->oplock_type)) {
2350 * Could not get the kernel oplock or there are byte-range
2351 * locks on the file.
2353 fsp->oplock_type = NO_OPLOCK;
2356 if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED || info == FILE_WAS_SUPERSEDED) {
2357 new_file_created = True;
2360 set_share_mode(lck, fsp, get_current_uid(conn),
2364 /* Handle strange delete on close create semantics. */
2365 if (create_options & FILE_DELETE_ON_CLOSE) {
2367 status = can_set_delete_on_close(fsp, new_dos_attributes);
2369 if (!NT_STATUS_IS_OK(status)) {
2370 /* Remember to delete the mode we just added. */
2371 del_share_mode(lck, fsp);
2376 /* Note that here we set the *inital* delete on close flag,
2377 not the regular one. The magic gets handled in close. */
2378 fsp->initial_delete_on_close = True;
2381 if (new_file_created) {
2382 /* Files should be initially set as archive */
2383 if (lp_map_archive(SNUM(conn)) ||
2384 lp_store_dos_attributes(SNUM(conn))) {
2386 if (file_set_dosmode(conn, smb_fname,
2387 new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
2388 parent_dir, true) == 0) {
2389 unx_mode = smb_fname->st.st_ex_mode;
2395 /* Determine sparse flag. */
2397 /* POSIX opens are sparse by default. */
2398 fsp->is_sparse = true;
2400 fsp->is_sparse = (file_existed &&
2401 (existing_dos_attributes & FILE_ATTRIBUTE_SPARSE));
2405 * Take care of inherited ACLs on created files - if default ACL not
2409 if (!posix_open && !file_existed && !def_acl) {
2411 int saved_errno = errno; /* We might get ENOSYS in the next
2414 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
2416 errno = saved_errno; /* Ignore ENOSYS */
2419 } else if (new_unx_mode) {
2423 /* Attributes need changing. File already existed. */
2426 int saved_errno = errno; /* We might get ENOSYS in the
2428 ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
2430 if (ret == -1 && errno == ENOSYS) {
2431 errno = saved_errno; /* Ignore ENOSYS */
2433 DEBUG(5, ("open_file_ntcreate: reset "
2434 "attributes of file %s to 0%o\n",
2435 smb_fname_str_dbg(smb_fname),
2436 (unsigned int)new_unx_mode));
2437 ret = 0; /* Don't do the fchmod below. */
2442 (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
2443 DEBUG(5, ("open_file_ntcreate: failed to reset "
2444 "attributes of file %s to 0%o\n",
2445 smb_fname_str_dbg(smb_fname),
2446 (unsigned int)new_unx_mode));
2449 /* If this is a successful open, we must remove any deferred open
2452 del_deferred_open_entry(lck, req->mid,
2453 sconn_server_id(req->sconn));
2457 return NT_STATUS_OK;
2461 /****************************************************************************
2462 Open a file for for write to ensure that we can fchmod it.
2463 ****************************************************************************/
2465 NTSTATUS open_file_fchmod(connection_struct *conn,
2466 struct smb_filename *smb_fname,
2467 files_struct **result)
2469 if (!VALID_STAT(smb_fname->st)) {
2470 return NT_STATUS_INVALID_PARAMETER;
2473 return SMB_VFS_CREATE_FILE(
2476 0, /* root_dir_fid */
2477 smb_fname, /* fname */
2478 FILE_WRITE_DATA, /* access_mask */
2479 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
2481 FILE_OPEN, /* create_disposition*/
2482 0, /* create_options */
2483 0, /* file_attributes */
2484 INTERNAL_OPEN_ONLY, /* oplock_request */
2485 0, /* allocation_size */
2486 0, /* private_flags */
2489 result, /* result */
2493 static NTSTATUS mkdir_internal(connection_struct *conn,
2494 struct smb_filename *smb_dname,
2495 uint32 file_attributes)
2498 char *parent_dir = NULL;
2500 bool posix_open = false;
2501 bool need_re_stat = false;
2502 uint32_t access_mask = SEC_DIR_ADD_SUBDIR;
2504 if(access_mask & ~(conn->share_access)) {
2505 DEBUG(5,("mkdir_internal: failing share access "
2506 "%s\n", lp_servicename(SNUM(conn))));
2507 return NT_STATUS_ACCESS_DENIED;
2510 status = check_name(conn, smb_dname->base_name);
2511 if (!NT_STATUS_IS_OK(status)) {
2515 if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
2517 return NT_STATUS_NO_MEMORY;
2520 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
2522 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
2524 mode = unix_mode(conn, FILE_ATTRIBUTE_DIRECTORY, smb_dname, parent_dir);
2527 status = check_parent_access(conn,
2532 if(!NT_STATUS_IS_OK(status)) {
2533 DEBUG(5,("mkdir_internal: check_parent_access "
2534 "on directory %s for path %s returned %s\n",
2536 smb_dname->base_name,
2537 nt_errstr(status) ));
2541 if (SMB_VFS_MKDIR(conn, smb_dname->base_name, mode) != 0) {
2542 return map_nt_error_from_unix(errno);
2545 /* Ensure we're checking for a symlink here.... */
2546 /* We don't want to get caught by a symlink racer. */
2548 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2549 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2550 smb_fname_str_dbg(smb_dname), strerror(errno)));
2551 return map_nt_error_from_unix(errno);
2554 if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
2555 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2556 smb_fname_str_dbg(smb_dname)));
2557 return NT_STATUS_NOT_A_DIRECTORY;
2560 if (lp_store_dos_attributes(SNUM(conn))) {
2562 file_set_dosmode(conn, smb_dname,
2563 file_attributes | FILE_ATTRIBUTE_DIRECTORY,
2568 if (lp_inherit_perms(SNUM(conn))) {
2569 inherit_access_posix_acl(conn, parent_dir,
2570 smb_dname->base_name, mode);
2571 need_re_stat = true;
2576 * Check if high bits should have been set,
2577 * then (if bits are missing): add them.
2578 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2581 if ((mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) &&
2582 (mode & ~smb_dname->st.st_ex_mode)) {
2583 SMB_VFS_CHMOD(conn, smb_dname->base_name,
2584 (smb_dname->st.st_ex_mode |
2585 (mode & ~smb_dname->st.st_ex_mode)));
2586 need_re_stat = true;
2590 /* Change the owner if required. */
2591 if (lp_inherit_owner(SNUM(conn))) {
2592 change_dir_owner_to_parent(conn, parent_dir,
2593 smb_dname->base_name,
2595 need_re_stat = true;
2599 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2600 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2601 smb_fname_str_dbg(smb_dname), strerror(errno)));
2602 return map_nt_error_from_unix(errno);
2606 notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
2607 smb_dname->base_name);
2609 return NT_STATUS_OK;
2612 /****************************************************************************
2613 Ensure we didn't get symlink raced on opening a directory.
2614 ****************************************************************************/
2616 bool check_same_stat(const SMB_STRUCT_STAT *sbuf1,
2617 const SMB_STRUCT_STAT *sbuf2)
2619 if (sbuf1->st_ex_uid != sbuf2->st_ex_uid ||
2620 sbuf1->st_ex_gid != sbuf2->st_ex_gid ||
2621 sbuf1->st_ex_dev != sbuf2->st_ex_dev ||
2622 sbuf1->st_ex_ino != sbuf2->st_ex_ino) {
2628 /****************************************************************************
2629 Open a directory from an NT SMB call.
2630 ****************************************************************************/
2632 static NTSTATUS open_directory(connection_struct *conn,
2633 struct smb_request *req,
2634 struct smb_filename *smb_dname,
2636 uint32 share_access,
2637 uint32 create_disposition,
2638 uint32 create_options,
2639 uint32 file_attributes,
2641 files_struct **result)
2643 files_struct *fsp = NULL;
2644 bool dir_existed = VALID_STAT(smb_dname->st) ? True : False;
2645 struct share_mode_lock *lck = NULL;
2647 struct timespec mtimespec;
2650 SMB_ASSERT(!is_ntfs_stream_smb_fname(smb_dname));
2652 /* Ensure we have a directory attribute. */
2653 file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
2655 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2656 "share_access = 0x%x create_options = 0x%x, "
2657 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2658 smb_fname_str_dbg(smb_dname),
2659 (unsigned int)access_mask,
2660 (unsigned int)share_access,
2661 (unsigned int)create_options,
2662 (unsigned int)create_disposition,
2663 (unsigned int)file_attributes));
2665 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
2666 (conn->fs_capabilities & FILE_NAMED_STREAMS) &&
2667 is_ntfs_stream_smb_fname(smb_dname)) {
2668 DEBUG(2, ("open_directory: %s is a stream name!\n",
2669 smb_fname_str_dbg(smb_dname)));
2670 return NT_STATUS_NOT_A_DIRECTORY;
2673 status = smbd_calculate_access_mask(conn, smb_dname, dir_existed,
2674 access_mask, &access_mask);
2675 if (!NT_STATUS_IS_OK(status)) {
2676 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2677 "on file %s returned %s\n",
2678 smb_fname_str_dbg(smb_dname),
2679 nt_errstr(status)));
2683 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
2684 !security_token_has_privilege(get_current_nttok(conn),
2685 SEC_PRIV_SECURITY)) {
2686 DEBUG(10, ("open_directory: open on %s "
2687 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2688 smb_fname_str_dbg(smb_dname)));
2689 return NT_STATUS_PRIVILEGE_NOT_HELD;
2692 switch( create_disposition ) {
2696 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2699 info = FILE_WAS_OPENED;
2704 /* If directory exists error. If directory doesn't
2708 status = NT_STATUS_OBJECT_NAME_COLLISION;
2709 DEBUG(2, ("open_directory: unable to create "
2710 "%s. Error was %s\n",
2711 smb_fname_str_dbg(smb_dname),
2712 nt_errstr(status)));
2716 status = mkdir_internal(conn, smb_dname,
2719 if (!NT_STATUS_IS_OK(status)) {
2720 DEBUG(2, ("open_directory: unable to create "
2721 "%s. Error was %s\n",
2722 smb_fname_str_dbg(smb_dname),
2723 nt_errstr(status)));
2727 info = FILE_WAS_CREATED;
2732 * If directory exists open. If directory doesn't
2737 status = NT_STATUS_OK;
2738 info = FILE_WAS_OPENED;
2740 status = mkdir_internal(conn, smb_dname,
2743 if (NT_STATUS_IS_OK(status)) {
2744 info = FILE_WAS_CREATED;
2746 /* Cope with create race. */
2747 if (!NT_STATUS_EQUAL(status,
2748 NT_STATUS_OBJECT_NAME_COLLISION)) {
2749 DEBUG(2, ("open_directory: unable to create "
2750 "%s. Error was %s\n",
2751 smb_fname_str_dbg(smb_dname),
2752 nt_errstr(status)));
2755 info = FILE_WAS_OPENED;
2761 case FILE_SUPERSEDE:
2762 case FILE_OVERWRITE:
2763 case FILE_OVERWRITE_IF:
2765 DEBUG(5,("open_directory: invalid create_disposition "
2766 "0x%x for directory %s\n",
2767 (unsigned int)create_disposition,
2768 smb_fname_str_dbg(smb_dname)));
2769 return NT_STATUS_INVALID_PARAMETER;
2772 if(!S_ISDIR(smb_dname->st.st_ex_mode)) {
2773 DEBUG(5,("open_directory: %s is not a directory !\n",
2774 smb_fname_str_dbg(smb_dname)));
2775 return NT_STATUS_NOT_A_DIRECTORY;
2778 if (info == FILE_WAS_OPENED) {
2779 uint32_t access_granted = 0;
2780 status = smbd_check_open_rights(conn, smb_dname, access_mask,
2783 /* Were we trying to do a directory open
2784 * for delete and didn't get DELETE
2785 * access (only) ? Check if the
2786 * directory allows DELETE_CHILD.
2788 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
2791 if ((NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) &&
2792 (access_mask & DELETE_ACCESS) &&
2793 (access_granted == DELETE_ACCESS) &&
2794 can_delete_file_in_directory(conn, smb_dname))) {
2795 DEBUG(10,("open_directory: overrode ACCESS_DENIED "
2796 "on directory %s\n",
2797 smb_fname_str_dbg(smb_dname)));
2798 status = NT_STATUS_OK;
2801 if (!NT_STATUS_IS_OK(status)) {
2802 DEBUG(10, ("open_directory: smbd_check_open_rights on "
2803 "file %s failed with %s\n",
2804 smb_fname_str_dbg(smb_dname),
2805 nt_errstr(status)));
2810 status = file_new(req, conn, &fsp);
2811 if(!NT_STATUS_IS_OK(status)) {
2816 * Setup the files_struct for it.
2819 fsp->mode = smb_dname->st.st_ex_mode;
2820 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
2821 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
2822 fsp->file_pid = req ? req->smbpid : 0;
2823 fsp->can_lock = False;
2824 fsp->can_read = False;
2825 fsp->can_write = False;
2827 fsp->share_access = share_access;
2828 fsp->fh->private_options = 0;
2830 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2832 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2833 fsp->print_file = NULL;
2834 fsp->modified = False;
2835 fsp->oplock_type = NO_OPLOCK;
2836 fsp->sent_oplock_break = NO_BREAK_SENT;
2837 fsp->is_directory = True;
2838 fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
2839 status = fsp_set_smb_fname(fsp, smb_dname);
2840 if (!NT_STATUS_IS_OK(status)) {
2841 file_free(req, fsp);
2845 mtimespec = smb_dname->st.st_ex_mtime;
2848 status = fd_open(conn, fsp, O_RDONLY|O_DIRECTORY, 0);
2850 /* POSIX allows us to open a directory with O_RDONLY. */
2851 status = fd_open(conn, fsp, O_RDONLY, 0);
2853 if (!NT_STATUS_IS_OK(status)) {
2854 DEBUG(5, ("open_directory: Could not open fd for "
2856 smb_fname_str_dbg(smb_dname),
2857 nt_errstr(status)));
2858 file_free(req, fsp);
2862 status = vfs_stat_fsp(fsp);
2863 if (!NT_STATUS_IS_OK(status)) {
2865 file_free(req, fsp);
2869 /* Ensure there was no race condition. */
2870 if (!check_same_stat(&smb_dname->st, &fsp->fsp_name->st)) {
2871 DEBUG(5,("open_directory: stat struct differs for "
2873 smb_fname_str_dbg(smb_dname)));
2875 file_free(req, fsp);
2876 return NT_STATUS_ACCESS_DENIED;
2879 lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
2880 conn->connectpath, smb_dname, &mtimespec);
2883 DEBUG(0, ("open_directory: Could not get share mode lock for "
2884 "%s\n", smb_fname_str_dbg(smb_dname)));
2886 file_free(req, fsp);
2887 return NT_STATUS_SHARING_VIOLATION;
2890 status = open_mode_check(conn, lck, fsp->name_hash,
2891 access_mask, share_access,
2892 create_options, &dir_existed);
2894 if (!NT_STATUS_IS_OK(status)) {
2897 file_free(req, fsp);
2901 set_share_mode(lck, fsp, get_current_uid(conn),
2902 req ? req->mid : 0, NO_OPLOCK);
2904 /* For directories the delete on close bit at open time seems
2905 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
2906 if (create_options & FILE_DELETE_ON_CLOSE) {
2907 status = can_set_delete_on_close(fsp, 0);
2908 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
2911 file_free(req, fsp);
2915 if (NT_STATUS_IS_OK(status)) {
2916 /* Note that here we set the *inital* delete on close flag,
2917 not the regular one. The magic gets handled in close. */
2918 fsp->initial_delete_on_close = True;
2929 return NT_STATUS_OK;
2932 NTSTATUS create_directory(connection_struct *conn, struct smb_request *req,
2933 struct smb_filename *smb_dname)
2938 status = SMB_VFS_CREATE_FILE(
2941 0, /* root_dir_fid */
2942 smb_dname, /* fname */
2943 FILE_READ_ATTRIBUTES, /* access_mask */
2944 FILE_SHARE_NONE, /* share_access */
2945 FILE_CREATE, /* create_disposition*/
2946 FILE_DIRECTORY_FILE, /* create_options */
2947 FILE_ATTRIBUTE_DIRECTORY, /* file_attributes */
2948 0, /* oplock_request */
2949 0, /* allocation_size */
2950 0, /* private_flags */
2956 if (NT_STATUS_IS_OK(status)) {
2957 close_file(req, fsp, NORMAL_CLOSE);
2963 /****************************************************************************
2964 Receive notification that one of our open files has been renamed by another
2966 ****************************************************************************/
2968 void msg_file_was_renamed(struct messaging_context *msg,
2971 struct server_id server_id,
2974 struct smbd_server_connection *sconn;
2976 char *frm = (char *)data->data;
2978 const char *sharepath;
2979 const char *base_name;
2980 const char *stream_name;
2981 struct smb_filename *smb_fname = NULL;
2982 size_t sp_len, bn_len;
2985 sconn = msg_ctx_to_sconn(msg);
2986 if (sconn == NULL) {
2987 DEBUG(1, ("could not find sconn\n"));
2991 if (data->data == NULL
2992 || data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
2993 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
2994 (int)data->length));
2998 /* Unpack the message. */
2999 pull_file_id_24(frm, &id);
3000 sharepath = &frm[24];
3001 sp_len = strlen(sharepath);
3002 base_name = sharepath + sp_len + 1;
3003 bn_len = strlen(base_name);
3004 stream_name = sharepath + sp_len + 1 + bn_len + 1;
3006 /* stream_name must always be NULL if there is no stream. */
3007 if (stream_name[0] == '\0') {
3011 status = create_synthetic_smb_fname(talloc_tos(), base_name,
3012 stream_name, NULL, &smb_fname);
3013 if (!NT_STATUS_IS_OK(status)) {
3017 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3019 sharepath, smb_fname_str_dbg(smb_fname),
3020 file_id_string_tos(&id)));
3022 for(fsp = file_find_di_first(sconn, id); fsp;
3023 fsp = file_find_di_next(fsp)) {
3024 if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
3026 DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
3027 fsp->fnum, fsp_str_dbg(fsp),
3028 smb_fname_str_dbg(smb_fname)));
3029 status = fsp_set_smb_fname(fsp, smb_fname);
3030 if (!NT_STATUS_IS_OK(status)) {
3035 /* Now we have the complete path we can work out if this is
3036 actually within this share and adjust newname accordingly. */
3037 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3038 "not sharepath %s) "
3039 "fnum %d from %s -> %s\n",
3040 fsp->conn->connectpath,
3044 smb_fname_str_dbg(smb_fname)));
3048 TALLOC_FREE(smb_fname);
3053 * If a main file is opened for delete, all streams need to be checked for
3054 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3055 * If that works, delete them all by setting the delete on close and close.
3058 NTSTATUS open_streams_for_delete(connection_struct *conn,
3061 struct stream_struct *stream_info = NULL;
3062 files_struct **streams = NULL;
3064 unsigned int num_streams = 0;
3065 TALLOC_CTX *frame = talloc_stackframe();
3068 status = vfs_streaminfo(conn, NULL, fname, talloc_tos(),
3069 &num_streams, &stream_info);
3071 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
3072 || NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
3073 DEBUG(10, ("no streams around\n"));
3075 return NT_STATUS_OK;
3078 if (!NT_STATUS_IS_OK(status)) {
3079 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3080 nt_errstr(status)));
3084 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3087 if (num_streams == 0) {
3089 return NT_STATUS_OK;
3092 streams = talloc_array(talloc_tos(), files_struct *, num_streams);
3093 if (streams == NULL) {
3094 DEBUG(0, ("talloc failed\n"));
3095 status = NT_STATUS_NO_MEMORY;
3099 for (i=0; i<num_streams; i++) {
3100 struct smb_filename *smb_fname = NULL;
3102 if (strequal(stream_info[i].name, "::$DATA")) {
3107 status = create_synthetic_smb_fname(talloc_tos(), fname,
3108 stream_info[i].name,
3110 if (!NT_STATUS_IS_OK(status)) {
3114 if (SMB_VFS_STAT(conn, smb_fname) == -1) {
3115 DEBUG(10, ("Unable to stat stream: %s\n",
3116 smb_fname_str_dbg(smb_fname)));
3119 status = SMB_VFS_CREATE_FILE(
3122 0, /* root_dir_fid */
3123 smb_fname, /* fname */
3124 DELETE_ACCESS, /* access_mask */
3125 (FILE_SHARE_READ | /* share_access */
3126 FILE_SHARE_WRITE | FILE_SHARE_DELETE),
3127 FILE_OPEN, /* create_disposition*/
3128 0, /* create_options */
3129 FILE_ATTRIBUTE_NORMAL, /* file_attributes */
3130 0, /* oplock_request */
3131 0, /* allocation_size */
3132 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* private_flags */
3135 &streams[i], /* result */
3138 if (!NT_STATUS_IS_OK(status)) {
3139 DEBUG(10, ("Could not open stream %s: %s\n",
3140 smb_fname_str_dbg(smb_fname),
3141 nt_errstr(status)));
3143 TALLOC_FREE(smb_fname);
3146 TALLOC_FREE(smb_fname);
3150 * don't touch the variable "status" beyond this point :-)
3153 for (i -= 1 ; i >= 0; i--) {
3154 if (streams[i] == NULL) {
3158 DEBUG(10, ("Closing stream # %d, %s\n", i,
3159 fsp_str_dbg(streams[i])));
3160 close_file(NULL, streams[i], NORMAL_CLOSE);
3169 * Wrapper around open_file_ntcreate and open_directory
3172 static NTSTATUS create_file_unixpath(connection_struct *conn,
3173 struct smb_request *req,
3174 struct smb_filename *smb_fname,
3175 uint32_t access_mask,
3176 uint32_t share_access,
3177 uint32_t create_disposition,
3178 uint32_t create_options,
3179 uint32_t file_attributes,
3180 uint32_t oplock_request,
3181 uint64_t allocation_size,
3182 uint32_t private_flags,
3183 struct security_descriptor *sd,
3184 struct ea_list *ea_list,
3186 files_struct **result,
3189 int info = FILE_WAS_OPENED;
3190 files_struct *base_fsp = NULL;
3191 files_struct *fsp = NULL;
3194 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3195 "file_attributes = 0x%x, share_access = 0x%x, "
3196 "create_disposition = 0x%x create_options = 0x%x "
3197 "oplock_request = 0x%x private_flags = 0x%x "
3198 "ea_list = 0x%p, sd = 0x%p, "
3200 (unsigned int)access_mask,
3201 (unsigned int)file_attributes,
3202 (unsigned int)share_access,
3203 (unsigned int)create_disposition,
3204 (unsigned int)create_options,
3205 (unsigned int)oplock_request,
3206 (unsigned int)private_flags,
3207 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3209 if (create_options & FILE_OPEN_BY_FILE_ID) {
3210 status = NT_STATUS_NOT_SUPPORTED;
3214 if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
3215 status = NT_STATUS_INVALID_PARAMETER;
3220 oplock_request |= INTERNAL_OPEN_ONLY;
3223 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3224 && (access_mask & DELETE_ACCESS)
3225 && !is_ntfs_stream_smb_fname(smb_fname)) {
3227 * We can't open a file with DELETE access if any of the
3228 * streams is open without FILE_SHARE_DELETE
3230 status = open_streams_for_delete(conn, smb_fname->base_name);
3232 if (!NT_STATUS_IS_OK(status)) {
3237 /* This is the correct thing to do (check every time) but can_delete
3238 * is expensive (it may have to read the parent directory
3239 * permissions). So for now we're not doing it unless we have a strong
3240 * hint the client is really going to delete this file. If the client
3241 * is forcing FILE_CREATE let the filesystem take care of the
3244 /* Setting FILE_SHARE_DELETE is the hint. */
3246 if ((create_disposition != FILE_CREATE)
3247 && (access_mask & DELETE_ACCESS)
3248 && (!(can_delete_file_in_directory(conn, smb_fname) ||
3249 can_access_file_acl(conn, smb_fname, DELETE_ACCESS)))) {
3250 status = NT_STATUS_ACCESS_DENIED;
3251 DEBUG(10,("create_file_unixpath: open file %s "
3252 "for delete ACCESS_DENIED\n",
3253 smb_fname_str_dbg(smb_fname)));
3257 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
3258 !security_token_has_privilege(get_current_nttok(conn),
3259 SEC_PRIV_SECURITY)) {
3260 DEBUG(10, ("create_file_unixpath: open on %s "
3261 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3262 smb_fname_str_dbg(smb_fname)));
3263 status = NT_STATUS_PRIVILEGE_NOT_HELD;
3267 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3268 && is_ntfs_stream_smb_fname(smb_fname)
3269 && (!(private_flags & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
3270 uint32 base_create_disposition;
3271 struct smb_filename *smb_fname_base = NULL;
3273 if (create_options & FILE_DIRECTORY_FILE) {
3274 status = NT_STATUS_NOT_A_DIRECTORY;
3278 switch (create_disposition) {
3280 base_create_disposition = FILE_OPEN;
3283 base_create_disposition = FILE_OPEN_IF;
3287 /* Create an smb_filename with stream_name == NULL. */
3288 status = create_synthetic_smb_fname(talloc_tos(),
3289 smb_fname->base_name,
3292 if (!NT_STATUS_IS_OK(status)) {
3296 if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
3297 DEBUG(10, ("Unable to stat stream: %s\n",
3298 smb_fname_str_dbg(smb_fname_base)));
3301 /* Open the base file. */
3302 status = create_file_unixpath(conn, NULL, smb_fname_base, 0,
3305 | FILE_SHARE_DELETE,
3306 base_create_disposition,
3307 0, 0, 0, 0, 0, NULL, NULL,
3309 TALLOC_FREE(smb_fname_base);
3311 if (!NT_STATUS_IS_OK(status)) {
3312 DEBUG(10, ("create_file_unixpath for base %s failed: "
3313 "%s\n", smb_fname->base_name,
3314 nt_errstr(status)));
3317 /* we don't need to low level fd */
3322 * If it's a request for a directory open, deal with it separately.
3325 if (create_options & FILE_DIRECTORY_FILE) {
3327 if (create_options & FILE_NON_DIRECTORY_FILE) {
3328 status = NT_STATUS_INVALID_PARAMETER;
3332 /* Can't open a temp directory. IFS kit test. */
3333 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
3334 (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
3335 status = NT_STATUS_INVALID_PARAMETER;
3340 * We will get a create directory here if the Win32
3341 * app specified a security descriptor in the
3342 * CreateDirectory() call.
3346 status = open_directory(
3347 conn, req, smb_fname, access_mask, share_access,
3348 create_disposition, create_options, file_attributes,
3353 * Ordinary file case.
3356 status = file_new(req, conn, &fsp);
3357 if(!NT_STATUS_IS_OK(status)) {
3361 status = fsp_set_smb_fname(fsp, smb_fname);
3362 if (!NT_STATUS_IS_OK(status)) {
3367 * We're opening the stream element of a base_fsp
3368 * we already opened. Set up the base_fsp pointer.
3371 fsp->base_fsp = base_fsp;
3374 status = open_file_ntcreate(conn,
3386 if(!NT_STATUS_IS_OK(status)) {
3387 file_free(req, fsp);
3391 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
3393 /* A stream open never opens a directory */
3396 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3401 * Fail the open if it was explicitly a non-directory
3405 if (create_options & FILE_NON_DIRECTORY_FILE) {
3406 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3411 status = open_directory(
3412 conn, req, smb_fname, access_mask,
3413 share_access, create_disposition,
3414 create_options, file_attributes,
3419 if (!NT_STATUS_IS_OK(status)) {
3423 fsp->base_fsp = base_fsp;
3426 * According to the MS documentation, the only time the security
3427 * descriptor is applied to the opened file is iff we *created* the
3428 * file; an existing file stays the same.
3430 * Also, it seems (from observation) that you can open the file with
3431 * any access mask but you can still write the sd. We need to override
3432 * the granted access before we call set_sd
3433 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3436 if ((sd != NULL) && (info == FILE_WAS_CREATED)
3437 && lp_nt_acl_support(SNUM(conn))) {
3439 uint32_t sec_info_sent;
3440 uint32_t saved_access_mask = fsp->access_mask;
3442 sec_info_sent = get_sec_info(sd);
3444 fsp->access_mask = FILE_GENERIC_ALL;
3446 /* Convert all the generic bits. */
3447 security_acl_map_generic(sd->dacl, &file_generic_mapping);
3448 security_acl_map_generic(sd->sacl, &file_generic_mapping);
3450 if (sec_info_sent & (SECINFO_OWNER|
3454 status = SMB_VFS_FSET_NT_ACL(fsp, sec_info_sent, sd);
3457 fsp->access_mask = saved_access_mask;
3459 if (!NT_STATUS_IS_OK(status)) {
3464 if ((ea_list != NULL) &&
3465 ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN))) {
3466 status = set_ea(conn, fsp, fsp->fsp_name, ea_list);
3467 if (!NT_STATUS_IS_OK(status)) {
3472 if (!fsp->is_directory && S_ISDIR(fsp->fsp_name->st.st_ex_mode)) {
3473 status = NT_STATUS_ACCESS_DENIED;
3477 /* Save the requested allocation size. */
3478 if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
3480 && (allocation_size > fsp->fsp_name->st.st_ex_size)) {
3481 fsp->initial_allocation_size = smb_roundup(
3482 fsp->conn, allocation_size);
3483 if (fsp->is_directory) {
3484 /* Can't set allocation size on a directory. */
3485 status = NT_STATUS_ACCESS_DENIED;
3488 if (vfs_allocate_file_space(
3489 fsp, fsp->initial_allocation_size) == -1) {
3490 status = NT_STATUS_DISK_FULL;
3494 fsp->initial_allocation_size = smb_roundup(
3495 fsp->conn, (uint64_t)fsp->fsp_name->st.st_ex_size);
3499 DEBUG(10, ("create_file_unixpath: info=%d\n", info));
3502 if (pinfo != NULL) {
3506 smb_fname->st = fsp->fsp_name->st;
3508 return NT_STATUS_OK;
3511 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
3514 if (base_fsp && fsp->base_fsp == base_fsp) {
3516 * The close_file below will close
3521 close_file(req, fsp, ERROR_CLOSE);
3524 if (base_fsp != NULL) {
3525 close_file(req, base_fsp, ERROR_CLOSE);
3532 * Calculate the full path name given a relative fid.
3534 NTSTATUS get_relative_fid_filename(connection_struct *conn,
3535 struct smb_request *req,
3536 uint16_t root_dir_fid,
3537 const struct smb_filename *smb_fname,
3538 struct smb_filename **smb_fname_out)
3540 files_struct *dir_fsp;
3541 char *parent_fname = NULL;
3542 char *new_base_name = NULL;
3545 if (root_dir_fid == 0 || !smb_fname) {
3546 status = NT_STATUS_INTERNAL_ERROR;
3550 dir_fsp = file_fsp(req, root_dir_fid);
3552 if (dir_fsp == NULL) {
3553 status = NT_STATUS_INVALID_HANDLE;
3557 if (is_ntfs_stream_smb_fname(dir_fsp->fsp_name)) {
3558 status = NT_STATUS_INVALID_HANDLE;
3562 if (!dir_fsp->is_directory) {
3565 * Check to see if this is a mac fork of some kind.
3568 if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
3569 is_ntfs_stream_smb_fname(smb_fname)) {
3570 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
3575 we need to handle the case when we get a
3576 relative open relative to a file and the
3577 pathname is blank - this is a reopen!
3578 (hint from demyn plantenberg)
3581 status = NT_STATUS_INVALID_HANDLE;
3585 if (ISDOT(dir_fsp->fsp_name->base_name)) {
3587 * We're at the toplevel dir, the final file name
3588 * must not contain ./, as this is filtered out
3589 * normally by srvstr_get_path and unix_convert
3590 * explicitly rejects paths containing ./.
3592 parent_fname = talloc_strdup(talloc_tos(), "");
3593 if (parent_fname == NULL) {
3594 status = NT_STATUS_NO_MEMORY;
3598 size_t dir_name_len = strlen(dir_fsp->fsp_name->base_name);
3601 * Copy in the base directory name.
3604 parent_fname = talloc_array(talloc_tos(), char,
3606 if (parent_fname == NULL) {
3607 status = NT_STATUS_NO_MEMORY;
3610 memcpy(parent_fname, dir_fsp->fsp_name->base_name,
3614 * Ensure it ends in a '/'.
3615 * We used TALLOC_SIZE +2 to add space for the '/'.
3619 && (parent_fname[dir_name_len-1] != '\\')
3620 && (parent_fname[dir_name_len-1] != '/')) {
3621 parent_fname[dir_name_len] = '/';
3622 parent_fname[dir_name_len+1] = '\0';
3626 new_base_name = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
3627 smb_fname->base_name);
3628 if (new_base_name == NULL) {
3629 status = NT_STATUS_NO_MEMORY;
3633 status = filename_convert(req,
3635 req->flags2 & FLAGS2_DFS_PATHNAMES,
3640 if (!NT_STATUS_IS_OK(status)) {
3645 TALLOC_FREE(parent_fname);
3646 TALLOC_FREE(new_base_name);
3650 NTSTATUS create_file_default(connection_struct *conn,
3651 struct smb_request *req,
3652 uint16_t root_dir_fid,
3653 struct smb_filename *smb_fname,
3654 uint32_t access_mask,
3655 uint32_t share_access,
3656 uint32_t create_disposition,
3657 uint32_t create_options,
3658 uint32_t file_attributes,
3659 uint32_t oplock_request,
3660 uint64_t allocation_size,
3661 uint32_t private_flags,
3662 struct security_descriptor *sd,
3663 struct ea_list *ea_list,
3664 files_struct **result,
3667 int info = FILE_WAS_OPENED;
3668 files_struct *fsp = NULL;
3670 bool stream_name = false;
3672 DEBUG(10,("create_file: access_mask = 0x%x "
3673 "file_attributes = 0x%x, share_access = 0x%x, "
3674 "create_disposition = 0x%x create_options = 0x%x "
3675 "oplock_request = 0x%x "
3676 "private_flags = 0x%x "
3677 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
3679 (unsigned int)access_mask,
3680 (unsigned int)file_attributes,
3681 (unsigned int)share_access,
3682 (unsigned int)create_disposition,
3683 (unsigned int)create_options,
3684 (unsigned int)oplock_request,
3685 (unsigned int)private_flags,
3686 (unsigned int)root_dir_fid,
3687 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3690 * Calculate the filename from the root_dir_if if necessary.
3693 if (root_dir_fid != 0) {
3694 struct smb_filename *smb_fname_out = NULL;
3695 status = get_relative_fid_filename(conn, req, root_dir_fid,
3696 smb_fname, &smb_fname_out);
3697 if (!NT_STATUS_IS_OK(status)) {
3700 smb_fname = smb_fname_out;
3704 * Check to see if this is a mac fork of some kind.
3707 stream_name = is_ntfs_stream_smb_fname(smb_fname);
3709 enum FAKE_FILE_TYPE fake_file_type;
3711 fake_file_type = is_fake_file(smb_fname);
3713 if (fake_file_type != FAKE_FILE_TYPE_NONE) {
3716 * Here we go! support for changing the disk quotas
3719 * We need to fake up to open this MAGIC QUOTA file
3720 * and return a valid FID.
3722 * w2k close this file directly after openening xp
3723 * also tries a QUERY_FILE_INFO on the file and then
3726 status = open_fake_file(req, conn, req->vuid,
3727 fake_file_type, smb_fname,
3729 if (!NT_STATUS_IS_OK(status)) {
3733 ZERO_STRUCT(smb_fname->st);
3737 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
3738 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
3743 /* All file access must go through check_name() */
3745 status = check_name(conn, smb_fname->base_name);
3746 if (!NT_STATUS_IS_OK(status)) {
3750 if (stream_name && is_ntfs_default_stream_smb_fname(smb_fname)) {
3752 smb_fname->stream_name = NULL;
3753 /* We have to handle this error here. */
3754 if (create_options & FILE_DIRECTORY_FILE) {
3755 status = NT_STATUS_NOT_A_DIRECTORY;
3758 if (lp_posix_pathnames()) {
3759 ret = SMB_VFS_LSTAT(conn, smb_fname);
3761 ret = SMB_VFS_STAT(conn, smb_fname);
3764 if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
3765 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3770 status = create_file_unixpath(
3771 conn, req, smb_fname, access_mask, share_access,
3772 create_disposition, create_options, file_attributes,
3773 oplock_request, allocation_size, private_flags,
3777 if (!NT_STATUS_IS_OK(status)) {
3782 DEBUG(10, ("create_file: info=%d\n", info));
3785 if (pinfo != NULL) {
3788 return NT_STATUS_OK;
3791 DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
3794 close_file(req, fsp, ERROR_CLOSE);