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_IS_OK(status)) {
576 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
578 * On NT_STATUS_ACCESS_DENIED, access_granted
579 * contains the denied bits.
582 if ((access_mask & FILE_WRITE_ATTRIBUTES) &&
583 (access_granted & FILE_WRITE_ATTRIBUTES) &&
584 (lp_map_readonly(SNUM(conn)) ||
585 lp_map_archive(SNUM(conn)) ||
586 lp_map_hidden(SNUM(conn)) ||
587 lp_map_system(SNUM(conn)))) {
588 access_granted &= ~FILE_WRITE_ATTRIBUTES;
590 DEBUG(10,("open_file: "
599 if ((access_mask & DELETE_ACCESS) &&
600 (access_granted & DELETE_ACCESS) &&
601 can_delete_file_in_directory(conn,
603 /* Were we trying to do a stat open
604 * for delete and didn't get DELETE
605 * access (only) ? Check if the
606 * directory allows DELETE_CHILD.
608 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
611 access_granted &= ~DELETE_ACCESS;
613 DEBUG(10,("open_file: "
621 if (access_granted != 0) {
622 DEBUG(10,("open_file: Access "
629 } else if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND) &&
631 S_ISLNK(smb_fname->st.st_ex_mode)) {
632 /* This is a POSIX stat open for delete
633 * or rename on a symlink that points
635 DEBUG(10,("open_file: allowing POSIX "
636 "open on bad symlink %s\n",
640 DEBUG(10,("open_file: "
641 "smbd_check_open_rights on file "
643 smb_fname_str_dbg(smb_fname),
644 nt_errstr(status) ));
653 if (fsp->fh->fd == -1) {
654 ret = SMB_VFS_STAT(conn, smb_fname);
656 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
657 /* If we have an fd, this stat should succeed. */
659 DEBUG(0,("Error doing fstat on open file %s "
661 smb_fname_str_dbg(smb_fname),
666 /* For a non-io open, this stat failing means file not found. JRA */
668 status = map_nt_error_from_unix(errno);
674 bool need_re_stat = false;
675 /* Do all inheritance work after we've
676 done a successful stat call and filled
677 in the stat struct in fsp->fsp_name. */
679 /* Inherit the ACL if required */
680 if (lp_inherit_perms(SNUM(conn))) {
681 inherit_access_posix_acl(conn, parent_dir,
682 smb_fname->base_name,
687 /* Change the owner if required. */
688 if (lp_inherit_owner(SNUM(conn))) {
689 change_file_owner_to_parent(conn, parent_dir,
695 if (fsp->fh->fd == -1) {
696 ret = SMB_VFS_STAT(conn, smb_fname);
698 ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
699 /* If we have an fd, this stat should succeed. */
701 DEBUG(0,("Error doing fstat on open file %s "
703 smb_fname_str_dbg(smb_fname),
709 notify_fname(conn, NOTIFY_ACTION_ADDED,
710 FILE_NOTIFY_CHANGE_FILE_NAME,
711 smb_fname->base_name);
716 * POSIX allows read-only opens of directories. We don't
717 * want to do this (we use a different code path for this)
718 * so catch a directory open and return an EISDIR. JRA.
721 if(S_ISDIR(smb_fname->st.st_ex_mode)) {
724 return NT_STATUS_FILE_IS_A_DIRECTORY;
727 fsp->mode = smb_fname->st.st_ex_mode;
728 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
729 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
730 fsp->file_pid = req ? req->smbpid : 0;
731 fsp->can_lock = True;
732 fsp->can_read = (access_mask & (FILE_READ_DATA)) ? True : False;
733 if (!CAN_WRITE(conn)) {
734 fsp->can_write = False;
736 fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ?
739 fsp->print_file = NULL;
740 fsp->modified = False;
741 fsp->sent_oplock_break = NO_BREAK_SENT;
742 fsp->is_directory = False;
743 if (conn->aio_write_behind_list &&
744 is_in_path(smb_fname->base_name, conn->aio_write_behind_list,
745 conn->case_sensitive)) {
746 fsp->aio_write_behind = True;
749 fsp->wcp = NULL; /* Write cache pointer. */
751 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
752 conn->session_info->unix_info->unix_name,
753 smb_fname_str_dbg(smb_fname),
754 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
755 conn->num_files_open));
761 /****************************************************************************
762 Check if we can open a file with a share mode.
763 Returns True if conflict, False if not.
764 ****************************************************************************/
766 static bool share_conflict(struct share_mode_entry *entry,
770 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
771 "entry->share_access = 0x%x, "
772 "entry->private_options = 0x%x\n",
773 (unsigned int)entry->access_mask,
774 (unsigned int)entry->share_access,
775 (unsigned int)entry->private_options));
777 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
778 (unsigned int)access_mask, (unsigned int)share_access));
780 if ((entry->access_mask & (FILE_WRITE_DATA|
784 DELETE_ACCESS)) == 0) {
785 DEBUG(10,("share_conflict: No conflict due to "
786 "entry->access_mask = 0x%x\n",
787 (unsigned int)entry->access_mask ));
791 if ((access_mask & (FILE_WRITE_DATA|
795 DELETE_ACCESS)) == 0) {
796 DEBUG(10,("share_conflict: No conflict due to "
797 "access_mask = 0x%x\n",
798 (unsigned int)access_mask ));
802 #if 1 /* JRA TEST - Superdebug. */
803 #define CHECK_MASK(num, am, right, sa, share) \
804 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
805 (unsigned int)(num), (unsigned int)(am), \
806 (unsigned int)(right), (unsigned int)(am)&(right) )); \
807 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
808 (unsigned int)(num), (unsigned int)(sa), \
809 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
810 if (((am) & (right)) && !((sa) & (share))) { \
811 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
812 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
813 (unsigned int)(share) )); \
817 #define CHECK_MASK(num, am, right, sa, share) \
818 if (((am) & (right)) && !((sa) & (share))) { \
819 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
820 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
821 (unsigned int)(share) )); \
826 CHECK_MASK(1, entry->access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
827 share_access, FILE_SHARE_WRITE);
828 CHECK_MASK(2, access_mask, FILE_WRITE_DATA | FILE_APPEND_DATA,
829 entry->share_access, FILE_SHARE_WRITE);
831 CHECK_MASK(3, entry->access_mask, FILE_READ_DATA | FILE_EXECUTE,
832 share_access, FILE_SHARE_READ);
833 CHECK_MASK(4, access_mask, FILE_READ_DATA | FILE_EXECUTE,
834 entry->share_access, FILE_SHARE_READ);
836 CHECK_MASK(5, entry->access_mask, DELETE_ACCESS,
837 share_access, FILE_SHARE_DELETE);
838 CHECK_MASK(6, access_mask, DELETE_ACCESS,
839 entry->share_access, FILE_SHARE_DELETE);
841 DEBUG(10,("share_conflict: No conflict.\n"));
845 #if defined(DEVELOPER)
846 static void validate_my_share_entries(struct smbd_server_connection *sconn,
848 struct share_mode_entry *share_entry)
852 if (!procid_is_me(&share_entry->pid)) {
856 if (is_deferred_open_entry(share_entry) &&
857 !open_was_deferred(sconn, share_entry->op_mid)) {
858 char *str = talloc_asprintf(talloc_tos(),
859 "Got a deferred entry without a request: "
861 share_mode_str(talloc_tos(), num, share_entry));
865 if (!is_valid_share_mode_entry(share_entry)) {
869 fsp = file_find_dif(sconn, share_entry->id,
870 share_entry->share_file_id);
872 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
873 share_mode_str(talloc_tos(), num, share_entry) ));
874 smb_panic("validate_my_share_entries: Cannot match a "
875 "share entry with an open file\n");
878 if (is_deferred_open_entry(share_entry) ||
879 is_unused_share_mode_entry(share_entry)) {
883 if ((share_entry->op_type == NO_OPLOCK) &&
884 (fsp->oplock_type == FAKE_LEVEL_II_OPLOCK)) {
885 /* Someone has already written to it, but I haven't yet
890 if (((uint16)fsp->oplock_type) != share_entry->op_type) {
899 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
900 share_mode_str(talloc_tos(), num, share_entry) ));
901 str = talloc_asprintf(talloc_tos(),
902 "validate_my_share_entries: "
903 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
904 fsp->fsp_name->base_name,
905 (unsigned int)fsp->oplock_type,
906 (unsigned int)share_entry->op_type );
912 bool is_stat_open(uint32 access_mask)
914 return (access_mask &&
915 ((access_mask & ~(SYNCHRONIZE_ACCESS| FILE_READ_ATTRIBUTES|
916 FILE_WRITE_ATTRIBUTES))==0) &&
917 ((access_mask & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|
918 FILE_WRITE_ATTRIBUTES)) != 0));
921 /****************************************************************************
922 Deal with share modes
923 Invarient: Share mode must be locked on entry and exit.
924 Returns -1 on error, or number of share modes on success (may be zero).
925 ****************************************************************************/
927 static NTSTATUS open_mode_check(connection_struct *conn,
928 struct share_mode_lock *lck,
932 uint32 create_options,
937 if(lck->num_share_modes == 0) {
941 *file_existed = True;
943 /* A delete on close prohibits everything */
945 if (is_delete_on_close_set(lck, name_hash)) {
946 return NT_STATUS_DELETE_PENDING;
949 if (is_stat_open(access_mask)) {
950 /* Stat open that doesn't trigger oplock breaks or share mode
951 * checks... ! JRA. */
956 * Check if the share modes will give us access.
959 #if defined(DEVELOPER)
960 for(i = 0; i < lck->num_share_modes; i++) {
961 validate_my_share_entries(conn->sconn, i,
962 &lck->share_modes[i]);
966 if (!lp_share_modes(SNUM(conn))) {
970 /* Now we check the share modes, after any oplock breaks. */
971 for(i = 0; i < lck->num_share_modes; i++) {
973 if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
977 /* someone else has a share lock on it, check to see if we can
979 if (share_conflict(&lck->share_modes[i],
980 access_mask, share_access)) {
981 return NT_STATUS_SHARING_VIOLATION;
988 static bool is_delete_request(files_struct *fsp) {
989 return ((fsp->access_mask == DELETE_ACCESS) &&
990 (fsp->oplock_type == NO_OPLOCK));
994 * Send a break message to the oplock holder and delay the open for
998 static NTSTATUS send_break_message(files_struct *fsp,
999 struct share_mode_entry *exclusive,
1004 char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
1006 DEBUG(10, ("Sending break request to PID %s\n",
1007 procid_str_static(&exclusive->pid)));
1008 exclusive->op_mid = mid;
1010 /* Create the message. */
1011 share_mode_entry_to_message(msg, exclusive);
1013 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1014 don't want this set in the share mode struct pointed to by lck. */
1016 if (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE) {
1017 SSVAL(msg,OP_BREAK_MSG_OP_TYPE_OFFSET,
1018 exclusive->op_type | FORCE_OPLOCK_BREAK_TO_NONE);
1021 status = messaging_send_buf(fsp->conn->sconn->msg_ctx, exclusive->pid,
1022 MSG_SMB_BREAK_REQUEST,
1024 MSG_SMB_SHARE_MODE_ENTRY_SIZE);
1025 if (!NT_STATUS_IS_OK(status)) {
1026 DEBUG(3, ("Could not send oplock break message: %s\n",
1027 nt_errstr(status)));
1034 * Return share_mode_entry pointers for :
1035 * 1). Batch oplock entry.
1036 * 2). Batch or exclusive oplock entry (may be identical to #1).
1037 * bool have_level2_oplock
1038 * bool have_no_oplock.
1039 * Do internal consistency checks on the share mode for a file.
1042 static void find_oplock_types(files_struct *fsp,
1044 struct share_mode_lock *lck,
1045 struct share_mode_entry **pp_batch,
1046 struct share_mode_entry **pp_ex_or_batch,
1048 bool *got_no_oplock)
1053 *pp_ex_or_batch = NULL;
1054 *got_level2 = false;
1055 *got_no_oplock = false;
1057 /* Ignore stat or internal opens, as is done in
1058 delay_for_batch_oplocks() and
1059 delay_for_exclusive_oplocks().
1061 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1065 for (i=0; i<lck->num_share_modes; i++) {
1066 if (!is_valid_share_mode_entry(&lck->share_modes[i])) {
1070 if (lck->share_modes[i].op_type == NO_OPLOCK &&
1071 is_stat_open(lck->share_modes[i].access_mask)) {
1072 /* We ignore stat opens in the table - they
1073 always have NO_OPLOCK and never get or
1074 cause breaks. JRA. */
1078 if (BATCH_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
1079 /* batch - can only be one. */
1080 if (*pp_ex_or_batch || *pp_batch || *got_level2 || *got_no_oplock) {
1081 smb_panic("Bad batch oplock entry.");
1083 *pp_batch = &lck->share_modes[i];
1086 if (EXCLUSIVE_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
1087 /* Exclusive or batch - can only be one. */
1088 if (*pp_ex_or_batch || *got_level2 || *got_no_oplock) {
1089 smb_panic("Bad exclusive or batch oplock entry.");
1091 *pp_ex_or_batch = &lck->share_modes[i];
1094 if (LEVEL_II_OPLOCK_TYPE(lck->share_modes[i].op_type)) {
1095 if (*pp_batch || *pp_ex_or_batch) {
1096 smb_panic("Bad levelII oplock entry.");
1101 if (lck->share_modes[i].op_type == NO_OPLOCK) {
1102 if (*pp_batch || *pp_ex_or_batch) {
1103 smb_panic("Bad no oplock entry.");
1105 *got_no_oplock = true;
1110 static bool delay_for_batch_oplocks(files_struct *fsp,
1113 struct share_mode_entry *batch_entry)
1115 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1119 if (batch_entry != NULL) {
1120 /* Found a batch oplock */
1121 send_break_message(fsp, batch_entry, mid, oplock_request);
1127 static bool delay_for_exclusive_oplocks(files_struct *fsp,
1130 struct share_mode_entry *ex_entry)
1132 if ((oplock_request & INTERNAL_OPEN_ONLY) || is_stat_open(fsp->access_mask)) {
1136 if (ex_entry != NULL) {
1137 /* Found an exclusive or batch oplock */
1138 bool delay_it = is_delete_request(fsp) ?
1139 BATCH_OPLOCK_TYPE(ex_entry->op_type) : true;
1141 send_break_message(fsp, ex_entry, mid, oplock_request);
1148 static void grant_fsp_oplock_type(files_struct *fsp,
1149 const struct byte_range_lock *br_lck,
1151 bool got_level2_oplock,
1152 bool got_a_none_oplock)
1154 bool allow_level2 = (global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
1155 lp_level2_oplocks(SNUM(fsp->conn));
1157 /* Start by granting what the client asked for,
1158 but ensure no SAMBA_PRIVATE bits can be set. */
1159 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
1161 if (oplock_request & INTERNAL_OPEN_ONLY) {
1162 /* No oplocks on internal open. */
1163 fsp->oplock_type = NO_OPLOCK;
1164 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1165 fsp->oplock_type, fsp_str_dbg(fsp)));
1167 } else if (br_lck && br_lck->num_locks > 0) {
1168 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1170 fsp->oplock_type = NO_OPLOCK;
1173 if (is_stat_open(fsp->access_mask)) {
1174 /* Leave the value already set. */
1175 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1176 fsp->oplock_type, fsp_str_dbg(fsp)));
1181 * Match what was requested (fsp->oplock_type) with
1182 * what was found in the existing share modes.
1185 if (got_a_none_oplock) {
1186 fsp->oplock_type = NO_OPLOCK;
1187 } else if (got_level2_oplock) {
1188 if (fsp->oplock_type == NO_OPLOCK ||
1189 fsp->oplock_type == FAKE_LEVEL_II_OPLOCK) {
1190 /* Store a level2 oplock, but don't tell the client */
1191 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1193 fsp->oplock_type = LEVEL_II_OPLOCK;
1196 /* All share_mode_entries are placeholders or deferred.
1197 * Silently upgrade to fake levelII if the client didn't
1198 * ask for an oplock. */
1199 if (fsp->oplock_type == NO_OPLOCK) {
1200 /* Store a level2 oplock, but don't tell the client */
1201 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1206 * Don't grant level2 to clients that don't want them
1207 * or if we've turned them off.
1209 if (fsp->oplock_type == LEVEL_II_OPLOCK && !allow_level2) {
1210 fsp->oplock_type = FAKE_LEVEL_II_OPLOCK;
1213 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1214 fsp->oplock_type, fsp_str_dbg(fsp)));
1217 bool request_timed_out(struct timeval request_time,
1218 struct timeval timeout)
1220 struct timeval now, end_time;
1222 end_time = timeval_sum(&request_time, &timeout);
1223 return (timeval_compare(&end_time, &now) < 0);
1226 /****************************************************************************
1227 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1228 ****************************************************************************/
1230 static void defer_open(struct share_mode_lock *lck,
1231 struct timeval request_time,
1232 struct timeval timeout,
1233 struct smb_request *req,
1234 struct deferred_open_record *state)
1238 /* Paranoia check */
1240 for (i=0; i<lck->num_share_modes; i++) {
1241 struct share_mode_entry *e = &lck->share_modes[i];
1243 if (!is_deferred_open_entry(e)) {
1247 if (procid_is_me(&e->pid) && (e->op_mid == req->mid)) {
1248 DEBUG(0, ("Trying to defer an already deferred "
1249 "request: mid=%llu, exiting\n",
1250 (unsigned long long)req->mid));
1251 exit_server("attempt to defer a deferred request");
1255 /* End paranoia check */
1257 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1258 "open entry for mid %llu\n",
1259 (unsigned int)request_time.tv_sec,
1260 (unsigned int)request_time.tv_usec,
1261 (unsigned long long)req->mid));
1263 if (!push_deferred_open_message_smb(req, request_time, timeout,
1264 state->id, (char *)state, sizeof(*state))) {
1265 exit_server("push_deferred_open_message_smb failed");
1267 add_deferred_open(lck, req->mid, request_time,
1268 sconn_server_id(req->sconn), state->id);
1272 /****************************************************************************
1273 On overwrite open ensure that the attributes match.
1274 ****************************************************************************/
1276 bool open_match_attributes(connection_struct *conn,
1277 uint32 old_dos_attr,
1278 uint32 new_dos_attr,
1279 mode_t existing_unx_mode,
1280 mode_t new_unx_mode,
1281 mode_t *returned_unx_mode)
1283 uint32 noarch_old_dos_attr, noarch_new_dos_attr;
1285 noarch_old_dos_attr = (old_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1286 noarch_new_dos_attr = (new_dos_attr & ~FILE_ATTRIBUTE_ARCHIVE);
1288 if((noarch_old_dos_attr == 0 && noarch_new_dos_attr != 0) ||
1289 (noarch_old_dos_attr != 0 && ((noarch_old_dos_attr & noarch_new_dos_attr) == noarch_old_dos_attr))) {
1290 *returned_unx_mode = new_unx_mode;
1292 *returned_unx_mode = (mode_t)0;
1295 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1296 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1297 "returned_unx_mode = 0%o\n",
1298 (unsigned int)old_dos_attr,
1299 (unsigned int)existing_unx_mode,
1300 (unsigned int)new_dos_attr,
1301 (unsigned int)*returned_unx_mode ));
1303 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1304 if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1305 if ((old_dos_attr & FILE_ATTRIBUTE_SYSTEM) &&
1306 !(new_dos_attr & FILE_ATTRIBUTE_SYSTEM)) {
1310 if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1311 if ((old_dos_attr & FILE_ATTRIBUTE_HIDDEN) &&
1312 !(new_dos_attr & FILE_ATTRIBUTE_HIDDEN)) {
1319 /****************************************************************************
1320 Special FCB or DOS processing in the case of a sharing violation.
1321 Try and find a duplicated file handle.
1322 ****************************************************************************/
1324 NTSTATUS fcb_or_dos_open(struct smb_request *req,
1325 connection_struct *conn,
1326 files_struct *fsp_to_dup_into,
1327 const struct smb_filename *smb_fname,
1332 uint32 share_access,
1333 uint32 create_options)
1337 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1338 "file %s.\n", smb_fname_str_dbg(smb_fname)));
1340 for(fsp = file_find_di_first(conn->sconn, id); fsp;
1341 fsp = file_find_di_next(fsp)) {
1343 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1344 "vuid = %u, file_pid = %u, private_options = 0x%x "
1345 "access_mask = 0x%x\n", fsp_str_dbg(fsp),
1346 fsp->fh->fd, (unsigned int)fsp->vuid,
1347 (unsigned int)fsp->file_pid,
1348 (unsigned int)fsp->fh->private_options,
1349 (unsigned int)fsp->access_mask ));
1351 if (fsp->fh->fd != -1 &&
1352 fsp->vuid == vuid &&
1353 fsp->file_pid == file_pid &&
1354 (fsp->fh->private_options & (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS |
1355 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) &&
1356 (fsp->access_mask & FILE_WRITE_DATA) &&
1357 strequal(fsp->fsp_name->base_name, smb_fname->base_name) &&
1358 strequal(fsp->fsp_name->stream_name,
1359 smb_fname->stream_name)) {
1360 DEBUG(10,("fcb_or_dos_open: file match\n"));
1366 return NT_STATUS_NOT_FOUND;
1369 /* quite an insane set of semantics ... */
1370 if (is_executable(smb_fname->base_name) &&
1371 (fsp->fh->private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS)) {
1372 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1373 return NT_STATUS_INVALID_PARAMETER;
1376 /* We need to duplicate this fsp. */
1377 return dup_file_fsp(req, fsp, access_mask, share_access,
1378 create_options, fsp_to_dup_into);
1381 static void schedule_defer_open(struct share_mode_lock *lck,
1382 struct timeval request_time,
1383 struct smb_request *req)
1385 struct deferred_open_record state;
1387 /* This is a relative time, added to the absolute
1388 request_time value to get the absolute timeout time.
1389 Note that if this is the second or greater time we enter
1390 this codepath for this particular request mid then
1391 request_time is left as the absolute time of the *first*
1392 time this request mid was processed. This is what allows
1393 the request to eventually time out. */
1395 struct timeval timeout;
1397 /* Normally the smbd we asked should respond within
1398 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1399 * the client did, give twice the timeout as a safety
1400 * measure here in case the other smbd is stuck
1401 * somewhere else. */
1403 timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*2, 0);
1405 /* Nothing actually uses state.delayed_for_oplocks
1406 but it's handy to differentiate in debug messages
1407 between a 30 second delay due to oplock break, and
1408 a 1 second delay for share mode conflicts. */
1410 state.delayed_for_oplocks = True;
1413 if (!request_timed_out(request_time, timeout)) {
1414 defer_open(lck, request_time, timeout, req, &state);
1418 /****************************************************************************
1419 Work out what access_mask to use from what the client sent us.
1420 ****************************************************************************/
1422 NTSTATUS smbd_calculate_access_mask(connection_struct *conn,
1423 const struct smb_filename *smb_fname,
1425 uint32_t access_mask,
1426 uint32_t *access_mask_out)
1429 uint32_t orig_access_mask = access_mask;
1430 uint32_t rejected_share_access;
1433 * Convert GENERIC bits to specific bits.
1436 se_map_generic(&access_mask, &file_generic_mapping);
1438 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1439 if (access_mask & MAXIMUM_ALLOWED_ACCESS) {
1442 struct security_descriptor *sd;
1443 uint32_t access_granted = 0;
1445 status = SMB_VFS_GET_NT_ACL(conn, smb_fname->base_name,
1450 if (!NT_STATUS_IS_OK(status)) {
1451 DEBUG(10,("smbd_calculate_access_mask: "
1452 "Could not get acl on file %s: %s\n",
1453 smb_fname_str_dbg(smb_fname),
1454 nt_errstr(status)));
1455 return NT_STATUS_ACCESS_DENIED;
1458 status = smb1_file_se_access_check(conn,
1460 get_current_nttok(conn),
1466 if (!NT_STATUS_IS_OK(status)) {
1467 DEBUG(10, ("smbd_calculate_access_mask: "
1468 "Access denied on file %s: "
1469 "when calculating maximum access\n",
1470 smb_fname_str_dbg(smb_fname)));
1471 return NT_STATUS_ACCESS_DENIED;
1474 access_mask = access_granted;
1476 access_mask = FILE_GENERIC_ALL;
1479 access_mask &= conn->share_access;
1482 rejected_share_access = access_mask & ~(conn->share_access);
1484 if (rejected_share_access) {
1485 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1486 "file %s: rejected by share access mask[0x%08X] "
1487 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1488 smb_fname_str_dbg(smb_fname),
1490 orig_access_mask, access_mask,
1491 rejected_share_access));
1492 return NT_STATUS_ACCESS_DENIED;
1495 *access_mask_out = access_mask;
1496 return NT_STATUS_OK;
1499 /****************************************************************************
1500 Remove the deferred open entry under lock.
1501 ****************************************************************************/
1503 void remove_deferred_open_entry(struct file_id id, uint64_t mid,
1504 struct server_id pid)
1506 struct share_mode_lock *lck = get_share_mode_lock(talloc_tos(), id,
1509 DEBUG(0, ("could not get share mode lock\n"));
1511 del_deferred_open_entry(lck, mid, pid);
1516 /****************************************************************
1517 Ensure we get the brlock lock followed by the share mode lock
1518 in the correct order to prevent deadlocks if other smbd's are
1519 using the brlock database on this file simultaneously with this open
1520 (that code also gets the locks in brlock -> share mode lock order).
1521 ****************************************************************/
1523 static bool acquire_ordered_locks(TALLOC_CTX *mem_ctx,
1525 const struct file_id id,
1526 const char *connectpath,
1527 const struct smb_filename *smb_fname,
1528 const struct timespec *p_old_write_time,
1529 struct share_mode_lock **p_lck,
1530 struct byte_range_lock **p_br_lck)
1532 /* Ordering - we must get the br_lck for this
1533 file before the share mode. */
1534 if (lp_locking(fsp->conn->params)) {
1535 *p_br_lck = brl_get_locks_readonly(fsp);
1536 if (*p_br_lck == NULL) {
1537 DEBUG(0, ("Could not get br_lock\n"));
1540 /* Note - we don't need to free the returned
1541 br_lck explicitly as it was allocated on talloc_tos()
1542 and so will be autofreed (and release the lock)
1543 once the frame context disappears.
1545 If it was set to fsp->brlock_rec then it was
1546 talloc_move'd to hang off the fsp pointer and
1547 in this case is guarenteed to not be holding the
1548 lock on the brlock database. */
1551 *p_lck = get_share_mode_lock(mem_ctx,
1557 if (*p_lck == NULL) {
1558 DEBUG(0, ("Could not get share mode lock\n"));
1559 TALLOC_FREE(*p_br_lck);
1565 /****************************************************************************
1566 Open a file with a share mode. Passed in an already created files_struct *.
1567 ****************************************************************************/
1569 static NTSTATUS open_file_ntcreate(connection_struct *conn,
1570 struct smb_request *req,
1571 uint32 access_mask, /* access bits (FILE_READ_DATA etc.) */
1572 uint32 share_access, /* share constants (FILE_SHARE_READ etc) */
1573 uint32 create_disposition, /* FILE_OPEN_IF etc. */
1574 uint32 create_options, /* options such as delete on close. */
1575 uint32 new_dos_attributes, /* attributes used for new file. */
1576 int oplock_request, /* internal Samba oplock codes. */
1577 /* Information (FILE_EXISTS etc.) */
1578 uint32_t private_flags, /* Samba specific flags. */
1582 struct smb_filename *smb_fname = fsp->fsp_name;
1585 bool file_existed = VALID_STAT(smb_fname->st);
1586 bool def_acl = False;
1587 bool posix_open = False;
1588 bool new_file_created = False;
1589 bool clear_ads = false;
1591 NTSTATUS fsp_open = NT_STATUS_ACCESS_DENIED;
1592 mode_t new_unx_mode = (mode_t)0;
1593 mode_t unx_mode = (mode_t)0;
1595 uint32 existing_dos_attributes = 0;
1596 struct timeval request_time = timeval_zero();
1597 struct share_mode_lock *lck = NULL;
1598 uint32 open_access_mask = access_mask;
1604 if (conn->printer) {
1606 * Printers are handled completely differently.
1607 * Most of the passed parameters are ignored.
1611 *pinfo = FILE_WAS_CREATED;
1614 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1615 smb_fname_str_dbg(smb_fname)));
1618 DEBUG(0,("open_file_ntcreate: printer open without "
1619 "an SMB request!\n"));
1620 return NT_STATUS_INTERNAL_ERROR;
1623 return print_spool_open(fsp, smb_fname->base_name,
1627 if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
1629 return NT_STATUS_NO_MEMORY;
1632 if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1634 unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
1635 new_dos_attributes = 0;
1637 /* Windows allows a new file to be created and
1638 silently removes a FILE_ATTRIBUTE_DIRECTORY
1639 sent by the client. Do the same. */
1641 new_dos_attributes &= ~FILE_ATTRIBUTE_DIRECTORY;
1643 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1645 unx_mode = unix_mode(conn, new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
1646 smb_fname, parent_dir);
1649 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1650 "access_mask=0x%x share_access=0x%x "
1651 "create_disposition = 0x%x create_options=0x%x "
1652 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1653 smb_fname_str_dbg(smb_fname), new_dos_attributes,
1654 access_mask, share_access, create_disposition,
1655 create_options, (unsigned int)unx_mode, oplock_request,
1656 (unsigned int)private_flags));
1658 if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
1659 DEBUG(0, ("No smb request but not an internal only open!\n"));
1660 return NT_STATUS_INTERNAL_ERROR;
1664 * Only non-internal opens can be deferred at all
1669 if (get_deferred_open_message_state(req,
1673 struct deferred_open_record *state = (struct deferred_open_record *)ptr;
1674 /* Remember the absolute time of the original
1675 request with this mid. We'll use it later to
1676 see if this has timed out. */
1678 /* Remove the deferred open entry under lock. */
1679 remove_deferred_open_entry(
1680 state->id, req->mid,
1681 sconn_server_id(req->sconn));
1683 /* Ensure we don't reprocess this message. */
1684 remove_deferred_open_message_smb(req->sconn, req->mid);
1688 status = check_name(conn, smb_fname->base_name);
1689 if (!NT_STATUS_IS_OK(status)) {
1694 new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
1696 existing_dos_attributes = dos_mode(conn, smb_fname);
1700 /* ignore any oplock requests if oplocks are disabled */
1701 if (!lp_oplocks(SNUM(conn)) ||
1702 IS_VETO_OPLOCK_PATH(conn, smb_fname->base_name)) {
1703 /* Mask off everything except the private Samba bits. */
1704 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
1707 /* this is for OS/2 long file names - say we don't support them */
1708 if (!lp_posix_pathnames() && strstr(smb_fname->base_name,".+,;=[].")) {
1709 /* OS/2 Workplace shell fix may be main code stream in a later
1711 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
1713 if (use_nt_status()) {
1714 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1716 return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
1719 switch( create_disposition ) {
1721 * Currently we're using FILE_SUPERSEDE as the same as
1722 * FILE_OVERWRITE_IF but they really are
1723 * different. FILE_SUPERSEDE deletes an existing file
1724 * (requiring delete access) then recreates it.
1726 case FILE_SUPERSEDE:
1727 /* If file exists replace/overwrite. If file doesn't
1729 flags2 |= (O_CREAT | O_TRUNC);
1733 case FILE_OVERWRITE_IF:
1734 /* If file exists replace/overwrite. If file doesn't
1736 flags2 |= (O_CREAT | O_TRUNC);
1741 /* If file exists open. If file doesn't exist error. */
1742 if (!file_existed) {
1743 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
1744 "requested for file %s and file "
1746 smb_fname_str_dbg(smb_fname)));
1748 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1752 case FILE_OVERWRITE:
1753 /* If file exists overwrite. If file doesn't exist
1755 if (!file_existed) {
1756 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
1757 "requested for file %s and file "
1759 smb_fname_str_dbg(smb_fname) ));
1761 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1768 /* If file exists error. If file doesn't exist
1771 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
1772 "requested for file %s and file "
1773 "already exists.\n",
1774 smb_fname_str_dbg(smb_fname)));
1775 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
1780 return map_nt_error_from_unix(errno);
1782 flags2 |= (O_CREAT|O_EXCL);
1786 /* If file exists open. If file doesn't exist
1792 return NT_STATUS_INVALID_PARAMETER;
1795 /* We only care about matching attributes on file exists and
1798 if (!posix_open && file_existed && ((create_disposition == FILE_OVERWRITE) ||
1799 (create_disposition == FILE_OVERWRITE_IF))) {
1800 if (!open_match_attributes(conn, existing_dos_attributes,
1802 smb_fname->st.st_ex_mode,
1803 unx_mode, &new_unx_mode)) {
1804 DEBUG(5,("open_file_ntcreate: attributes missmatch "
1805 "for file %s (%x %x) (0%o, 0%o)\n",
1806 smb_fname_str_dbg(smb_fname),
1807 existing_dos_attributes,
1809 (unsigned int)smb_fname->st.st_ex_mode,
1810 (unsigned int)unx_mode ));
1812 return NT_STATUS_ACCESS_DENIED;
1816 status = smbd_calculate_access_mask(conn, smb_fname, file_existed,
1819 if (!NT_STATUS_IS_OK(status)) {
1820 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
1821 "on file %s returned %s\n",
1822 smb_fname_str_dbg(smb_fname), nt_errstr(status)));
1826 open_access_mask = access_mask;
1828 if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1829 open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
1832 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
1833 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname),
1837 * Note that we ignore the append flag as append does not
1838 * mean the same thing under DOS and Unix.
1841 if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
1842 (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
1843 /* DENY_DOS opens are always underlying read-write on the
1844 file handle, no matter what the requested access mask
1846 if ((private_flags & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) ||
1847 access_mask & (FILE_READ_ATTRIBUTES|FILE_READ_DATA|FILE_READ_EA|FILE_EXECUTE)) {
1857 * Currently we only look at FILE_WRITE_THROUGH for create options.
1861 if ((create_options & FILE_WRITE_THROUGH) && lp_strict_sync(SNUM(conn))) {
1866 if (posix_open && (access_mask & FILE_APPEND_DATA)) {
1870 if (!posix_open && !CAN_WRITE(conn)) {
1872 * We should really return a permission denied error if either
1873 * O_CREAT or O_TRUNC are set, but for compatibility with
1874 * older versions of Samba we just AND them out.
1876 flags2 &= ~(O_CREAT|O_TRUNC);
1880 * Ensure we can't write on a read-only share or file.
1883 if (flags != O_RDONLY && file_existed &&
1884 (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
1885 DEBUG(5,("open_file_ntcreate: write access requested for "
1886 "file %s on read only %s\n",
1887 smb_fname_str_dbg(smb_fname),
1888 !CAN_WRITE(conn) ? "share" : "file" ));
1890 return NT_STATUS_ACCESS_DENIED;
1893 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
1894 fsp->share_access = share_access;
1895 fsp->fh->private_options = private_flags;
1896 fsp->access_mask = open_access_mask; /* We change this to the
1897 * requested access_mask after
1898 * the open is done. */
1899 fsp->posix_open = posix_open;
1901 /* Ensure no SAMBA_PRIVATE bits can be set. */
1902 fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
1904 if (timeval_is_zero(&request_time)) {
1905 request_time = fsp->open_time;
1909 struct byte_range_lock *br_lck = NULL;
1910 struct share_mode_entry *batch_entry = NULL;
1911 struct share_mode_entry *exclusive_entry = NULL;
1912 bool got_level2_oplock = false;
1913 bool got_a_none_oplock = false;
1915 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
1916 id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
1918 if (!acquire_ordered_locks(talloc_tos(),
1926 return NT_STATUS_SHARING_VIOLATION;
1929 /* Get the types we need to examine. */
1930 find_oplock_types(fsp,
1936 &got_a_none_oplock);
1938 /* First pass - send break only on batch oplocks. */
1939 if ((req != NULL) &&
1940 delay_for_batch_oplocks(fsp,
1944 schedule_defer_open(lck, request_time, req);
1946 return NT_STATUS_SHARING_VIOLATION;
1949 /* Use the client requested access mask here, not the one we
1951 status = open_mode_check(conn, lck, fsp->name_hash,
1952 access_mask, share_access,
1953 create_options, &file_existed);
1955 if (NT_STATUS_IS_OK(status)) {
1956 /* We might be going to allow this open. Check oplock
1958 /* Second pass - send break for both batch or
1959 * exclusive oplocks. */
1960 if ((req != NULL) &&
1961 delay_for_exclusive_oplocks(
1966 schedule_defer_open(lck, request_time, req);
1968 return NT_STATUS_SHARING_VIOLATION;
1972 if (NT_STATUS_EQUAL(status, NT_STATUS_DELETE_PENDING)) {
1973 /* DELETE_PENDING is not deferred for a second */
1978 grant_fsp_oplock_type(fsp,
1984 if (!NT_STATUS_IS_OK(status)) {
1985 uint32 can_access_mask;
1986 bool can_access = True;
1988 SMB_ASSERT(NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION));
1990 /* Check if this can be done with the deny_dos and fcb
1993 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
1994 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
1996 DEBUG(0, ("DOS open without an SMB "
1999 return NT_STATUS_INTERNAL_ERROR;
2002 /* Use the client requested access mask here,
2003 * not the one we open with. */
2004 status = fcb_or_dos_open(req,
2015 if (NT_STATUS_IS_OK(status)) {
2018 *pinfo = FILE_WAS_OPENED;
2020 return NT_STATUS_OK;
2025 * This next line is a subtlety we need for
2026 * MS-Access. If a file open will fail due to share
2027 * permissions and also for security (access) reasons,
2028 * we need to return the access failed error, not the
2029 * share error. We can't open the file due to kernel
2030 * oplock deadlock (it's possible we failed above on
2031 * the open_mode_check()) so use a userspace check.
2034 if (flags & O_RDWR) {
2035 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
2036 } else if (flags & O_WRONLY) {
2037 can_access_mask = FILE_WRITE_DATA;
2039 can_access_mask = FILE_READ_DATA;
2042 if (((can_access_mask & FILE_WRITE_DATA) &&
2043 !CAN_WRITE(conn)) ||
2044 !can_access_file_data(conn, smb_fname,
2050 * If we're returning a share violation, ensure we
2051 * cope with the braindead 1 second delay.
2054 if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
2055 lp_defer_sharing_violations()) {
2056 struct timeval timeout;
2057 struct deferred_open_record state;
2060 /* this is a hack to speed up torture tests
2062 timeout_usecs = lp_parm_int(SNUM(conn),
2063 "smbd","sharedelay",
2064 SHARING_VIOLATION_USEC_WAIT);
2066 /* This is a relative time, added to the absolute
2067 request_time value to get the absolute timeout time.
2068 Note that if this is the second or greater time we enter
2069 this codepath for this particular request mid then
2070 request_time is left as the absolute time of the *first*
2071 time this request mid was processed. This is what allows
2072 the request to eventually time out. */
2074 timeout = timeval_set(0, timeout_usecs);
2076 /* Nothing actually uses state.delayed_for_oplocks
2077 but it's handy to differentiate in debug messages
2078 between a 30 second delay due to oplock break, and
2079 a 1 second delay for share mode conflicts. */
2081 state.delayed_for_oplocks = False;
2085 && !request_timed_out(request_time,
2087 defer_open(lck, request_time, timeout,
2095 * We have detected a sharing violation here
2096 * so return the correct error code
2098 status = NT_STATUS_SHARING_VIOLATION;
2100 status = NT_STATUS_ACCESS_DENIED;
2106 * We exit this block with the share entry *locked*.....
2110 SMB_ASSERT(!file_existed || (lck != NULL));
2113 * Ensure we pay attention to default ACLs on directories if required.
2116 if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
2117 (def_acl = directory_has_default_acl(conn, parent_dir))) {
2118 unx_mode = (0777 & lp_create_mask(SNUM(conn)));
2121 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2122 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2123 (unsigned int)flags, (unsigned int)flags2,
2124 (unsigned int)unx_mode, (unsigned int)access_mask,
2125 (unsigned int)open_access_mask));
2128 * open_file strips any O_TRUNC flags itself.
2131 fsp_open = open_file(fsp, conn, req, parent_dir,
2132 flags|flags2, unx_mode, access_mask,
2135 if (!NT_STATUS_IS_OK(fsp_open)) {
2140 if (!file_existed) {
2141 struct byte_range_lock *br_lck = NULL;
2142 struct share_mode_entry *batch_entry = NULL;
2143 struct share_mode_entry *exclusive_entry = NULL;
2144 bool got_level2_oplock = false;
2145 bool got_a_none_oplock = false;
2146 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
2148 * Deal with the race condition where two smbd's detect the
2149 * file doesn't exist and do the create at the same time. One
2150 * of them will win and set a share mode, the other (ie. this
2151 * one) should check if the requested share mode for this
2152 * create is allowed.
2156 * Now the file exists and fsp is successfully opened,
2157 * fsp->dev and fsp->inode are valid and should replace the
2158 * dev=0,inode=0 from a non existent file. Spotted by
2159 * Nadav Danieli <nadavd@exanet.com>. JRA.
2164 if (!acquire_ordered_locks(talloc_tos(),
2172 return NT_STATUS_SHARING_VIOLATION;
2175 /* Get the types we need to examine. */
2176 find_oplock_types(fsp,
2182 &got_a_none_oplock);
2184 /* First pass - send break only on batch oplocks. */
2185 if ((req != NULL) &&
2186 delay_for_batch_oplocks(fsp,
2190 schedule_defer_open(lck, request_time, req);
2193 return NT_STATUS_SHARING_VIOLATION;
2196 status = open_mode_check(conn, lck, fsp->name_hash,
2197 access_mask, share_access,
2198 create_options, &file_existed);
2200 if (NT_STATUS_IS_OK(status)) {
2201 /* We might be going to allow this open. Check oplock
2203 /* Second pass - send break for both batch or
2204 * exclusive oplocks. */
2205 if ((req != NULL) &&
2206 delay_for_exclusive_oplocks(
2211 schedule_defer_open(lck, request_time, req);
2214 return NT_STATUS_SHARING_VIOLATION;
2218 if (!NT_STATUS_IS_OK(status)) {
2219 struct deferred_open_record state;
2221 state.delayed_for_oplocks = False;
2224 /* Do it all over again immediately. In the second
2225 * round we will find that the file existed and handle
2226 * the DELETE_PENDING and FCB cases correctly. No need
2227 * to duplicate the code here. Essentially this is a
2228 * "goto top of this function", but don't tell
2232 defer_open(lck, request_time, timeval_zero(),
2240 grant_fsp_oplock_type(fsp,
2247 * We exit this block with the share entry *locked*.....
2252 SMB_ASSERT(lck != NULL);
2254 /* Delete streams if create_disposition requires it */
2255 if (file_existed && clear_ads &&
2256 !is_ntfs_stream_smb_fname(smb_fname)) {
2257 status = delete_all_streams(conn, smb_fname->base_name);
2258 if (!NT_STATUS_IS_OK(status)) {
2265 /* note that we ignore failure for the following. It is
2266 basically a hack for NFS, and NFS will never set one of
2267 these only read them. Nobody but Samba can ever set a deny
2268 mode and we have already checked our more authoritative
2269 locking database for permission to set this deny mode. If
2270 the kernel refuses the operations then the kernel is wrong.
2271 note that GPFS supports it as well - jmcd */
2273 if (fsp->fh->fd != -1) {
2275 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
2276 if(ret_flock == -1 ){
2281 return NT_STATUS_SHARING_VIOLATION;
2286 * At this point onwards, we can guarentee that the share entry
2287 * is locked, whether we created the file or not, and that the
2288 * deny mode is compatible with all current opens.
2292 * If requested, truncate the file.
2295 if (file_existed && (flags2&O_TRUNC)) {
2297 * We are modifing the file after open - update the stat
2300 if ((SMB_VFS_FTRUNCATE(fsp, 0) == -1) ||
2301 (SMB_VFS_FSTAT(fsp, &smb_fname->st)==-1)) {
2302 status = map_nt_error_from_unix(errno);
2310 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2311 * but we don't have to store this - just ignore it on access check.
2313 if (conn->sconn->using_smb2) {
2315 * SMB2 doesn't return it (according to Microsoft tests).
2316 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2317 * File created with access = 0x7 (Read, Write, Delete)
2318 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2320 fsp->access_mask = access_mask;
2322 /* But SMB1 does. */
2323 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2327 /* stat opens on existing files don't get oplocks. */
2328 if (is_stat_open(open_access_mask)) {
2329 fsp->oplock_type = NO_OPLOCK;
2332 if (!(flags2 & O_TRUNC)) {
2333 info = FILE_WAS_OPENED;
2335 info = FILE_WAS_OVERWRITTEN;
2338 info = FILE_WAS_CREATED;
2346 * Setup the oplock info in both the shared memory and
2350 if (!set_file_oplock(fsp, fsp->oplock_type)) {
2352 * Could not get the kernel oplock or there are byte-range
2353 * locks on the file.
2355 fsp->oplock_type = NO_OPLOCK;
2358 if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED || info == FILE_WAS_SUPERSEDED) {
2359 new_file_created = True;
2362 set_share_mode(lck, fsp, get_current_uid(conn),
2366 /* Handle strange delete on close create semantics. */
2367 if (create_options & FILE_DELETE_ON_CLOSE) {
2369 status = can_set_delete_on_close(fsp, new_dos_attributes);
2371 if (!NT_STATUS_IS_OK(status)) {
2372 /* Remember to delete the mode we just added. */
2373 del_share_mode(lck, fsp);
2378 /* Note that here we set the *inital* delete on close flag,
2379 not the regular one. The magic gets handled in close. */
2380 fsp->initial_delete_on_close = True;
2383 if (new_file_created) {
2384 /* Files should be initially set as archive */
2385 if (lp_map_archive(SNUM(conn)) ||
2386 lp_store_dos_attributes(SNUM(conn))) {
2388 if (file_set_dosmode(conn, smb_fname,
2389 new_dos_attributes | FILE_ATTRIBUTE_ARCHIVE,
2390 parent_dir, true) == 0) {
2391 unx_mode = smb_fname->st.st_ex_mode;
2397 /* Determine sparse flag. */
2399 /* POSIX opens are sparse by default. */
2400 fsp->is_sparse = true;
2402 fsp->is_sparse = (file_existed &&
2403 (existing_dos_attributes & FILE_ATTRIBUTE_SPARSE));
2407 * Take care of inherited ACLs on created files - if default ACL not
2411 if (!posix_open && !file_existed && !def_acl) {
2413 int saved_errno = errno; /* We might get ENOSYS in the next
2416 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
2418 errno = saved_errno; /* Ignore ENOSYS */
2421 } else if (new_unx_mode) {
2425 /* Attributes need changing. File already existed. */
2428 int saved_errno = errno; /* We might get ENOSYS in the
2430 ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
2432 if (ret == -1 && errno == ENOSYS) {
2433 errno = saved_errno; /* Ignore ENOSYS */
2435 DEBUG(5, ("open_file_ntcreate: reset "
2436 "attributes of file %s to 0%o\n",
2437 smb_fname_str_dbg(smb_fname),
2438 (unsigned int)new_unx_mode));
2439 ret = 0; /* Don't do the fchmod below. */
2444 (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
2445 DEBUG(5, ("open_file_ntcreate: failed to reset "
2446 "attributes of file %s to 0%o\n",
2447 smb_fname_str_dbg(smb_fname),
2448 (unsigned int)new_unx_mode));
2451 /* If this is a successful open, we must remove any deferred open
2454 del_deferred_open_entry(lck, req->mid,
2455 sconn_server_id(req->sconn));
2459 return NT_STATUS_OK;
2463 /****************************************************************************
2464 Open a file for for write to ensure that we can fchmod it.
2465 ****************************************************************************/
2467 NTSTATUS open_file_fchmod(connection_struct *conn,
2468 struct smb_filename *smb_fname,
2469 files_struct **result)
2471 if (!VALID_STAT(smb_fname->st)) {
2472 return NT_STATUS_INVALID_PARAMETER;
2475 return SMB_VFS_CREATE_FILE(
2478 0, /* root_dir_fid */
2479 smb_fname, /* fname */
2480 FILE_WRITE_DATA, /* access_mask */
2481 (FILE_SHARE_READ | FILE_SHARE_WRITE | /* share_access */
2483 FILE_OPEN, /* create_disposition*/
2484 0, /* create_options */
2485 0, /* file_attributes */
2486 INTERNAL_OPEN_ONLY, /* oplock_request */
2487 0, /* allocation_size */
2488 0, /* private_flags */
2491 result, /* result */
2495 static NTSTATUS mkdir_internal(connection_struct *conn,
2496 struct smb_filename *smb_dname,
2497 uint32 file_attributes)
2500 char *parent_dir = NULL;
2502 bool posix_open = false;
2503 bool need_re_stat = false;
2504 uint32_t access_mask = SEC_DIR_ADD_SUBDIR;
2506 if(access_mask & ~(conn->share_access)) {
2507 DEBUG(5,("mkdir_internal: failing share access "
2508 "%s\n", lp_servicename(SNUM(conn))));
2509 return NT_STATUS_ACCESS_DENIED;
2512 status = check_name(conn, smb_dname->base_name);
2513 if (!NT_STATUS_IS_OK(status)) {
2517 if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
2519 return NT_STATUS_NO_MEMORY;
2522 if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
2524 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
2526 mode = unix_mode(conn, FILE_ATTRIBUTE_DIRECTORY, smb_dname, parent_dir);
2529 status = check_parent_access(conn,
2534 if(!NT_STATUS_IS_OK(status)) {
2535 DEBUG(5,("mkdir_internal: check_parent_access "
2536 "on directory %s for path %s returned %s\n",
2538 smb_dname->base_name,
2539 nt_errstr(status) ));
2543 if (SMB_VFS_MKDIR(conn, smb_dname->base_name, mode) != 0) {
2544 return map_nt_error_from_unix(errno);
2547 /* Ensure we're checking for a symlink here.... */
2548 /* We don't want to get caught by a symlink racer. */
2550 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2551 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2552 smb_fname_str_dbg(smb_dname), strerror(errno)));
2553 return map_nt_error_from_unix(errno);
2556 if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
2557 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2558 smb_fname_str_dbg(smb_dname)));
2559 return NT_STATUS_NOT_A_DIRECTORY;
2562 if (lp_store_dos_attributes(SNUM(conn))) {
2564 file_set_dosmode(conn, smb_dname,
2565 file_attributes | FILE_ATTRIBUTE_DIRECTORY,
2570 if (lp_inherit_perms(SNUM(conn))) {
2571 inherit_access_posix_acl(conn, parent_dir,
2572 smb_dname->base_name, mode);
2573 need_re_stat = true;
2578 * Check if high bits should have been set,
2579 * then (if bits are missing): add them.
2580 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2583 if ((mode & ~(S_IRWXU|S_IRWXG|S_IRWXO)) &&
2584 (mode & ~smb_dname->st.st_ex_mode)) {
2585 SMB_VFS_CHMOD(conn, smb_dname->base_name,
2586 (smb_dname->st.st_ex_mode |
2587 (mode & ~smb_dname->st.st_ex_mode)));
2588 need_re_stat = true;
2592 /* Change the owner if required. */
2593 if (lp_inherit_owner(SNUM(conn))) {
2594 change_dir_owner_to_parent(conn, parent_dir,
2595 smb_dname->base_name,
2597 need_re_stat = true;
2601 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
2602 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2603 smb_fname_str_dbg(smb_dname), strerror(errno)));
2604 return map_nt_error_from_unix(errno);
2608 notify_fname(conn, NOTIFY_ACTION_ADDED, FILE_NOTIFY_CHANGE_DIR_NAME,
2609 smb_dname->base_name);
2611 return NT_STATUS_OK;
2614 /****************************************************************************
2615 Ensure we didn't get symlink raced on opening a directory.
2616 ****************************************************************************/
2618 bool check_same_stat(const SMB_STRUCT_STAT *sbuf1,
2619 const SMB_STRUCT_STAT *sbuf2)
2621 if (sbuf1->st_ex_uid != sbuf2->st_ex_uid ||
2622 sbuf1->st_ex_gid != sbuf2->st_ex_gid ||
2623 sbuf1->st_ex_dev != sbuf2->st_ex_dev ||
2624 sbuf1->st_ex_ino != sbuf2->st_ex_ino) {
2630 /****************************************************************************
2631 Open a directory from an NT SMB call.
2632 ****************************************************************************/
2634 static NTSTATUS open_directory(connection_struct *conn,
2635 struct smb_request *req,
2636 struct smb_filename *smb_dname,
2638 uint32 share_access,
2639 uint32 create_disposition,
2640 uint32 create_options,
2641 uint32 file_attributes,
2643 files_struct **result)
2645 files_struct *fsp = NULL;
2646 bool dir_existed = VALID_STAT(smb_dname->st) ? True : False;
2647 struct share_mode_lock *lck = NULL;
2649 struct timespec mtimespec;
2652 SMB_ASSERT(!is_ntfs_stream_smb_fname(smb_dname));
2654 /* Ensure we have a directory attribute. */
2655 file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
2657 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2658 "share_access = 0x%x create_options = 0x%x, "
2659 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2660 smb_fname_str_dbg(smb_dname),
2661 (unsigned int)access_mask,
2662 (unsigned int)share_access,
2663 (unsigned int)create_options,
2664 (unsigned int)create_disposition,
2665 (unsigned int)file_attributes));
2667 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
2668 (conn->fs_capabilities & FILE_NAMED_STREAMS) &&
2669 is_ntfs_stream_smb_fname(smb_dname)) {
2670 DEBUG(2, ("open_directory: %s is a stream name!\n",
2671 smb_fname_str_dbg(smb_dname)));
2672 return NT_STATUS_NOT_A_DIRECTORY;
2675 status = smbd_calculate_access_mask(conn, smb_dname, dir_existed,
2676 access_mask, &access_mask);
2677 if (!NT_STATUS_IS_OK(status)) {
2678 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2679 "on file %s returned %s\n",
2680 smb_fname_str_dbg(smb_dname),
2681 nt_errstr(status)));
2685 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
2686 !security_token_has_privilege(get_current_nttok(conn),
2687 SEC_PRIV_SECURITY)) {
2688 DEBUG(10, ("open_directory: open on %s "
2689 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2690 smb_fname_str_dbg(smb_dname)));
2691 return NT_STATUS_PRIVILEGE_NOT_HELD;
2694 switch( create_disposition ) {
2698 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
2701 info = FILE_WAS_OPENED;
2706 /* If directory exists error. If directory doesn't
2710 status = NT_STATUS_OBJECT_NAME_COLLISION;
2711 DEBUG(2, ("open_directory: unable to create "
2712 "%s. Error was %s\n",
2713 smb_fname_str_dbg(smb_dname),
2714 nt_errstr(status)));
2718 status = mkdir_internal(conn, smb_dname,
2721 if (!NT_STATUS_IS_OK(status)) {
2722 DEBUG(2, ("open_directory: unable to create "
2723 "%s. Error was %s\n",
2724 smb_fname_str_dbg(smb_dname),
2725 nt_errstr(status)));
2729 info = FILE_WAS_CREATED;
2734 * If directory exists open. If directory doesn't
2739 status = NT_STATUS_OK;
2740 info = FILE_WAS_OPENED;
2742 status = mkdir_internal(conn, smb_dname,
2745 if (NT_STATUS_IS_OK(status)) {
2746 info = FILE_WAS_CREATED;
2748 /* Cope with create race. */
2749 if (!NT_STATUS_EQUAL(status,
2750 NT_STATUS_OBJECT_NAME_COLLISION)) {
2751 DEBUG(2, ("open_directory: unable to create "
2752 "%s. Error was %s\n",
2753 smb_fname_str_dbg(smb_dname),
2754 nt_errstr(status)));
2757 info = FILE_WAS_OPENED;
2763 case FILE_SUPERSEDE:
2764 case FILE_OVERWRITE:
2765 case FILE_OVERWRITE_IF:
2767 DEBUG(5,("open_directory: invalid create_disposition "
2768 "0x%x for directory %s\n",
2769 (unsigned int)create_disposition,
2770 smb_fname_str_dbg(smb_dname)));
2771 return NT_STATUS_INVALID_PARAMETER;
2774 if(!S_ISDIR(smb_dname->st.st_ex_mode)) {
2775 DEBUG(5,("open_directory: %s is not a directory !\n",
2776 smb_fname_str_dbg(smb_dname)));
2777 return NT_STATUS_NOT_A_DIRECTORY;
2780 if (info == FILE_WAS_OPENED) {
2781 uint32_t access_granted = 0;
2782 status = smbd_check_open_rights(conn, smb_dname, access_mask,
2785 /* Were we trying to do a directory open
2786 * for delete and didn't get DELETE
2787 * access (only) ? Check if the
2788 * directory allows DELETE_CHILD.
2790 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
2793 if ((NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) &&
2794 (access_mask & DELETE_ACCESS) &&
2795 (access_granted == DELETE_ACCESS) &&
2796 can_delete_file_in_directory(conn, smb_dname))) {
2797 DEBUG(10,("open_directory: overrode ACCESS_DENIED "
2798 "on directory %s\n",
2799 smb_fname_str_dbg(smb_dname)));
2800 status = NT_STATUS_OK;
2803 if (!NT_STATUS_IS_OK(status)) {
2804 DEBUG(10, ("open_directory: smbd_check_open_rights on "
2805 "file %s failed with %s\n",
2806 smb_fname_str_dbg(smb_dname),
2807 nt_errstr(status)));
2812 status = file_new(req, conn, &fsp);
2813 if(!NT_STATUS_IS_OK(status)) {
2818 * Setup the files_struct for it.
2821 fsp->mode = smb_dname->st.st_ex_mode;
2822 fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
2823 fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
2824 fsp->file_pid = req ? req->smbpid : 0;
2825 fsp->can_lock = False;
2826 fsp->can_read = False;
2827 fsp->can_write = False;
2829 fsp->share_access = share_access;
2830 fsp->fh->private_options = 0;
2832 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2834 fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
2835 fsp->print_file = NULL;
2836 fsp->modified = False;
2837 fsp->oplock_type = NO_OPLOCK;
2838 fsp->sent_oplock_break = NO_BREAK_SENT;
2839 fsp->is_directory = True;
2840 fsp->posix_open = (file_attributes & FILE_FLAG_POSIX_SEMANTICS) ? True : False;
2841 status = fsp_set_smb_fname(fsp, smb_dname);
2842 if (!NT_STATUS_IS_OK(status)) {
2843 file_free(req, fsp);
2847 mtimespec = smb_dname->st.st_ex_mtime;
2850 status = fd_open(conn, fsp, O_RDONLY|O_DIRECTORY, 0);
2852 /* POSIX allows us to open a directory with O_RDONLY. */
2853 status = fd_open(conn, fsp, O_RDONLY, 0);
2855 if (!NT_STATUS_IS_OK(status)) {
2856 DEBUG(5, ("open_directory: Could not open fd for "
2858 smb_fname_str_dbg(smb_dname),
2859 nt_errstr(status)));
2860 file_free(req, fsp);
2864 status = vfs_stat_fsp(fsp);
2865 if (!NT_STATUS_IS_OK(status)) {
2867 file_free(req, fsp);
2871 /* Ensure there was no race condition. */
2872 if (!check_same_stat(&smb_dname->st, &fsp->fsp_name->st)) {
2873 DEBUG(5,("open_directory: stat struct differs for "
2875 smb_fname_str_dbg(smb_dname)));
2877 file_free(req, fsp);
2878 return NT_STATUS_ACCESS_DENIED;
2881 lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
2882 conn->connectpath, smb_dname, &mtimespec);
2885 DEBUG(0, ("open_directory: Could not get share mode lock for "
2886 "%s\n", smb_fname_str_dbg(smb_dname)));
2888 file_free(req, fsp);
2889 return NT_STATUS_SHARING_VIOLATION;
2892 status = open_mode_check(conn, lck, fsp->name_hash,
2893 access_mask, share_access,
2894 create_options, &dir_existed);
2896 if (!NT_STATUS_IS_OK(status)) {
2899 file_free(req, fsp);
2903 set_share_mode(lck, fsp, get_current_uid(conn),
2904 req ? req->mid : 0, NO_OPLOCK);
2906 /* For directories the delete on close bit at open time seems
2907 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
2908 if (create_options & FILE_DELETE_ON_CLOSE) {
2909 status = can_set_delete_on_close(fsp, 0);
2910 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
2913 file_free(req, fsp);
2917 if (NT_STATUS_IS_OK(status)) {
2918 /* Note that here we set the *inital* delete on close flag,
2919 not the regular one. The magic gets handled in close. */
2920 fsp->initial_delete_on_close = True;
2931 return NT_STATUS_OK;
2934 NTSTATUS create_directory(connection_struct *conn, struct smb_request *req,
2935 struct smb_filename *smb_dname)
2940 status = SMB_VFS_CREATE_FILE(
2943 0, /* root_dir_fid */
2944 smb_dname, /* fname */
2945 FILE_READ_ATTRIBUTES, /* access_mask */
2946 FILE_SHARE_NONE, /* share_access */
2947 FILE_CREATE, /* create_disposition*/
2948 FILE_DIRECTORY_FILE, /* create_options */
2949 FILE_ATTRIBUTE_DIRECTORY, /* file_attributes */
2950 0, /* oplock_request */
2951 0, /* allocation_size */
2952 0, /* private_flags */
2958 if (NT_STATUS_IS_OK(status)) {
2959 close_file(req, fsp, NORMAL_CLOSE);
2965 /****************************************************************************
2966 Receive notification that one of our open files has been renamed by another
2968 ****************************************************************************/
2970 void msg_file_was_renamed(struct messaging_context *msg,
2973 struct server_id server_id,
2976 struct smbd_server_connection *sconn;
2978 char *frm = (char *)data->data;
2980 const char *sharepath;
2981 const char *base_name;
2982 const char *stream_name;
2983 struct smb_filename *smb_fname = NULL;
2984 size_t sp_len, bn_len;
2987 sconn = msg_ctx_to_sconn(msg);
2988 if (sconn == NULL) {
2989 DEBUG(1, ("could not find sconn\n"));
2993 if (data->data == NULL
2994 || data->length < MSG_FILE_RENAMED_MIN_SIZE + 2) {
2995 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
2996 (int)data->length));
3000 /* Unpack the message. */
3001 pull_file_id_24(frm, &id);
3002 sharepath = &frm[24];
3003 sp_len = strlen(sharepath);
3004 base_name = sharepath + sp_len + 1;
3005 bn_len = strlen(base_name);
3006 stream_name = sharepath + sp_len + 1 + bn_len + 1;
3008 /* stream_name must always be NULL if there is no stream. */
3009 if (stream_name[0] == '\0') {
3013 status = create_synthetic_smb_fname(talloc_tos(), base_name,
3014 stream_name, NULL, &smb_fname);
3015 if (!NT_STATUS_IS_OK(status)) {
3019 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3021 sharepath, smb_fname_str_dbg(smb_fname),
3022 file_id_string_tos(&id)));
3024 for(fsp = file_find_di_first(sconn, id); fsp;
3025 fsp = file_find_di_next(fsp)) {
3026 if (memcmp(fsp->conn->connectpath, sharepath, sp_len) == 0) {
3028 DEBUG(10,("msg_file_was_renamed: renaming file fnum %d from %s -> %s\n",
3029 fsp->fnum, fsp_str_dbg(fsp),
3030 smb_fname_str_dbg(smb_fname)));
3031 status = fsp_set_smb_fname(fsp, smb_fname);
3032 if (!NT_STATUS_IS_OK(status)) {
3037 /* Now we have the complete path we can work out if this is
3038 actually within this share and adjust newname accordingly. */
3039 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3040 "not sharepath %s) "
3041 "fnum %d from %s -> %s\n",
3042 fsp->conn->connectpath,
3046 smb_fname_str_dbg(smb_fname)));
3050 TALLOC_FREE(smb_fname);
3055 * If a main file is opened for delete, all streams need to be checked for
3056 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3057 * If that works, delete them all by setting the delete on close and close.
3060 NTSTATUS open_streams_for_delete(connection_struct *conn,
3063 struct stream_struct *stream_info = NULL;
3064 files_struct **streams = NULL;
3066 unsigned int num_streams = 0;
3067 TALLOC_CTX *frame = talloc_stackframe();
3070 status = vfs_streaminfo(conn, NULL, fname, talloc_tos(),
3071 &num_streams, &stream_info);
3073 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
3074 || NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
3075 DEBUG(10, ("no streams around\n"));
3077 return NT_STATUS_OK;
3080 if (!NT_STATUS_IS_OK(status)) {
3081 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3082 nt_errstr(status)));
3086 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3089 if (num_streams == 0) {
3091 return NT_STATUS_OK;
3094 streams = talloc_array(talloc_tos(), files_struct *, num_streams);
3095 if (streams == NULL) {
3096 DEBUG(0, ("talloc failed\n"));
3097 status = NT_STATUS_NO_MEMORY;
3101 for (i=0; i<num_streams; i++) {
3102 struct smb_filename *smb_fname = NULL;
3104 if (strequal(stream_info[i].name, "::$DATA")) {
3109 status = create_synthetic_smb_fname(talloc_tos(), fname,
3110 stream_info[i].name,
3112 if (!NT_STATUS_IS_OK(status)) {
3116 if (SMB_VFS_STAT(conn, smb_fname) == -1) {
3117 DEBUG(10, ("Unable to stat stream: %s\n",
3118 smb_fname_str_dbg(smb_fname)));
3121 status = SMB_VFS_CREATE_FILE(
3124 0, /* root_dir_fid */
3125 smb_fname, /* fname */
3126 DELETE_ACCESS, /* access_mask */
3127 (FILE_SHARE_READ | /* share_access */
3128 FILE_SHARE_WRITE | FILE_SHARE_DELETE),
3129 FILE_OPEN, /* create_disposition*/
3130 0, /* create_options */
3131 FILE_ATTRIBUTE_NORMAL, /* file_attributes */
3132 0, /* oplock_request */
3133 0, /* allocation_size */
3134 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* private_flags */
3137 &streams[i], /* result */
3140 if (!NT_STATUS_IS_OK(status)) {
3141 DEBUG(10, ("Could not open stream %s: %s\n",
3142 smb_fname_str_dbg(smb_fname),
3143 nt_errstr(status)));
3145 TALLOC_FREE(smb_fname);
3148 TALLOC_FREE(smb_fname);
3152 * don't touch the variable "status" beyond this point :-)
3155 for (i -= 1 ; i >= 0; i--) {
3156 if (streams[i] == NULL) {
3160 DEBUG(10, ("Closing stream # %d, %s\n", i,
3161 fsp_str_dbg(streams[i])));
3162 close_file(NULL, streams[i], NORMAL_CLOSE);
3171 * Wrapper around open_file_ntcreate and open_directory
3174 static NTSTATUS create_file_unixpath(connection_struct *conn,
3175 struct smb_request *req,
3176 struct smb_filename *smb_fname,
3177 uint32_t access_mask,
3178 uint32_t share_access,
3179 uint32_t create_disposition,
3180 uint32_t create_options,
3181 uint32_t file_attributes,
3182 uint32_t oplock_request,
3183 uint64_t allocation_size,
3184 uint32_t private_flags,
3185 struct security_descriptor *sd,
3186 struct ea_list *ea_list,
3188 files_struct **result,
3191 int info = FILE_WAS_OPENED;
3192 files_struct *base_fsp = NULL;
3193 files_struct *fsp = NULL;
3196 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3197 "file_attributes = 0x%x, share_access = 0x%x, "
3198 "create_disposition = 0x%x create_options = 0x%x "
3199 "oplock_request = 0x%x private_flags = 0x%x "
3200 "ea_list = 0x%p, sd = 0x%p, "
3202 (unsigned int)access_mask,
3203 (unsigned int)file_attributes,
3204 (unsigned int)share_access,
3205 (unsigned int)create_disposition,
3206 (unsigned int)create_options,
3207 (unsigned int)oplock_request,
3208 (unsigned int)private_flags,
3209 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3211 if (create_options & FILE_OPEN_BY_FILE_ID) {
3212 status = NT_STATUS_NOT_SUPPORTED;
3216 if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
3217 status = NT_STATUS_INVALID_PARAMETER;
3222 oplock_request |= INTERNAL_OPEN_ONLY;
3225 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3226 && (access_mask & DELETE_ACCESS)
3227 && !is_ntfs_stream_smb_fname(smb_fname)) {
3229 * We can't open a file with DELETE access if any of the
3230 * streams is open without FILE_SHARE_DELETE
3232 status = open_streams_for_delete(conn, smb_fname->base_name);
3234 if (!NT_STATUS_IS_OK(status)) {
3239 /* This is the correct thing to do (check every time) but can_delete
3240 * is expensive (it may have to read the parent directory
3241 * permissions). So for now we're not doing it unless we have a strong
3242 * hint the client is really going to delete this file. If the client
3243 * is forcing FILE_CREATE let the filesystem take care of the
3246 /* Setting FILE_SHARE_DELETE is the hint. */
3248 if ((create_disposition != FILE_CREATE)
3249 && (access_mask & DELETE_ACCESS)
3250 && (!(can_delete_file_in_directory(conn, smb_fname) ||
3251 can_access_file_acl(conn, smb_fname, DELETE_ACCESS)))) {
3252 status = NT_STATUS_ACCESS_DENIED;
3253 DEBUG(10,("create_file_unixpath: open file %s "
3254 "for delete ACCESS_DENIED\n",
3255 smb_fname_str_dbg(smb_fname)));
3259 if ((access_mask & SEC_FLAG_SYSTEM_SECURITY) &&
3260 !security_token_has_privilege(get_current_nttok(conn),
3261 SEC_PRIV_SECURITY)) {
3262 DEBUG(10, ("create_file_unixpath: open on %s "
3263 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3264 smb_fname_str_dbg(smb_fname)));
3265 status = NT_STATUS_PRIVILEGE_NOT_HELD;
3269 if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
3270 && is_ntfs_stream_smb_fname(smb_fname)
3271 && (!(private_flags & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
3272 uint32 base_create_disposition;
3273 struct smb_filename *smb_fname_base = NULL;
3275 if (create_options & FILE_DIRECTORY_FILE) {
3276 status = NT_STATUS_NOT_A_DIRECTORY;
3280 switch (create_disposition) {
3282 base_create_disposition = FILE_OPEN;
3285 base_create_disposition = FILE_OPEN_IF;
3289 /* Create an smb_filename with stream_name == NULL. */
3290 status = create_synthetic_smb_fname(talloc_tos(),
3291 smb_fname->base_name,
3294 if (!NT_STATUS_IS_OK(status)) {
3298 if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
3299 DEBUG(10, ("Unable to stat stream: %s\n",
3300 smb_fname_str_dbg(smb_fname_base)));
3303 /* Open the base file. */
3304 status = create_file_unixpath(conn, NULL, smb_fname_base, 0,
3307 | FILE_SHARE_DELETE,
3308 base_create_disposition,
3309 0, 0, 0, 0, 0, NULL, NULL,
3311 TALLOC_FREE(smb_fname_base);
3313 if (!NT_STATUS_IS_OK(status)) {
3314 DEBUG(10, ("create_file_unixpath for base %s failed: "
3315 "%s\n", smb_fname->base_name,
3316 nt_errstr(status)));
3319 /* we don't need to low level fd */
3324 * If it's a request for a directory open, deal with it separately.
3327 if (create_options & FILE_DIRECTORY_FILE) {
3329 if (create_options & FILE_NON_DIRECTORY_FILE) {
3330 status = NT_STATUS_INVALID_PARAMETER;
3334 /* Can't open a temp directory. IFS kit test. */
3335 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
3336 (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
3337 status = NT_STATUS_INVALID_PARAMETER;
3342 * We will get a create directory here if the Win32
3343 * app specified a security descriptor in the
3344 * CreateDirectory() call.
3348 status = open_directory(
3349 conn, req, smb_fname, access_mask, share_access,
3350 create_disposition, create_options, file_attributes,
3355 * Ordinary file case.
3358 status = file_new(req, conn, &fsp);
3359 if(!NT_STATUS_IS_OK(status)) {
3363 status = fsp_set_smb_fname(fsp, smb_fname);
3364 if (!NT_STATUS_IS_OK(status)) {
3369 * We're opening the stream element of a base_fsp
3370 * we already opened. Set up the base_fsp pointer.
3373 fsp->base_fsp = base_fsp;
3376 status = open_file_ntcreate(conn,
3388 if(!NT_STATUS_IS_OK(status)) {
3389 file_free(req, fsp);
3393 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
3395 /* A stream open never opens a directory */
3398 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3403 * Fail the open if it was explicitly a non-directory
3407 if (create_options & FILE_NON_DIRECTORY_FILE) {
3408 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3413 status = open_directory(
3414 conn, req, smb_fname, access_mask,
3415 share_access, create_disposition,
3416 create_options, file_attributes,
3421 if (!NT_STATUS_IS_OK(status)) {
3425 fsp->base_fsp = base_fsp;
3428 * According to the MS documentation, the only time the security
3429 * descriptor is applied to the opened file is iff we *created* the
3430 * file; an existing file stays the same.
3432 * Also, it seems (from observation) that you can open the file with
3433 * any access mask but you can still write the sd. We need to override
3434 * the granted access before we call set_sd
3435 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3438 if ((sd != NULL) && (info == FILE_WAS_CREATED)
3439 && lp_nt_acl_support(SNUM(conn))) {
3441 uint32_t sec_info_sent;
3442 uint32_t saved_access_mask = fsp->access_mask;
3444 sec_info_sent = get_sec_info(sd);
3446 fsp->access_mask = FILE_GENERIC_ALL;
3448 /* Convert all the generic bits. */
3449 security_acl_map_generic(sd->dacl, &file_generic_mapping);
3450 security_acl_map_generic(sd->sacl, &file_generic_mapping);
3452 if (sec_info_sent & (SECINFO_OWNER|
3456 status = SMB_VFS_FSET_NT_ACL(fsp, sec_info_sent, sd);
3459 fsp->access_mask = saved_access_mask;
3461 if (!NT_STATUS_IS_OK(status)) {
3466 if ((ea_list != NULL) &&
3467 ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN))) {
3468 status = set_ea(conn, fsp, fsp->fsp_name, ea_list);
3469 if (!NT_STATUS_IS_OK(status)) {
3474 if (!fsp->is_directory && S_ISDIR(fsp->fsp_name->st.st_ex_mode)) {
3475 status = NT_STATUS_ACCESS_DENIED;
3479 /* Save the requested allocation size. */
3480 if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
3482 && (allocation_size > fsp->fsp_name->st.st_ex_size)) {
3483 fsp->initial_allocation_size = smb_roundup(
3484 fsp->conn, allocation_size);
3485 if (fsp->is_directory) {
3486 /* Can't set allocation size on a directory. */
3487 status = NT_STATUS_ACCESS_DENIED;
3490 if (vfs_allocate_file_space(
3491 fsp, fsp->initial_allocation_size) == -1) {
3492 status = NT_STATUS_DISK_FULL;
3496 fsp->initial_allocation_size = smb_roundup(
3497 fsp->conn, (uint64_t)fsp->fsp_name->st.st_ex_size);
3501 DEBUG(10, ("create_file_unixpath: info=%d\n", info));
3504 if (pinfo != NULL) {
3508 smb_fname->st = fsp->fsp_name->st;
3510 return NT_STATUS_OK;
3513 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
3516 if (base_fsp && fsp->base_fsp == base_fsp) {
3518 * The close_file below will close
3523 close_file(req, fsp, ERROR_CLOSE);
3526 if (base_fsp != NULL) {
3527 close_file(req, base_fsp, ERROR_CLOSE);
3534 * Calculate the full path name given a relative fid.
3536 NTSTATUS get_relative_fid_filename(connection_struct *conn,
3537 struct smb_request *req,
3538 uint16_t root_dir_fid,
3539 const struct smb_filename *smb_fname,
3540 struct smb_filename **smb_fname_out)
3542 files_struct *dir_fsp;
3543 char *parent_fname = NULL;
3544 char *new_base_name = NULL;
3547 if (root_dir_fid == 0 || !smb_fname) {
3548 status = NT_STATUS_INTERNAL_ERROR;
3552 dir_fsp = file_fsp(req, root_dir_fid);
3554 if (dir_fsp == NULL) {
3555 status = NT_STATUS_INVALID_HANDLE;
3559 if (is_ntfs_stream_smb_fname(dir_fsp->fsp_name)) {
3560 status = NT_STATUS_INVALID_HANDLE;
3564 if (!dir_fsp->is_directory) {
3567 * Check to see if this is a mac fork of some kind.
3570 if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
3571 is_ntfs_stream_smb_fname(smb_fname)) {
3572 status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
3577 we need to handle the case when we get a
3578 relative open relative to a file and the
3579 pathname is blank - this is a reopen!
3580 (hint from demyn plantenberg)
3583 status = NT_STATUS_INVALID_HANDLE;
3587 if (ISDOT(dir_fsp->fsp_name->base_name)) {
3589 * We're at the toplevel dir, the final file name
3590 * must not contain ./, as this is filtered out
3591 * normally by srvstr_get_path and unix_convert
3592 * explicitly rejects paths containing ./.
3594 parent_fname = talloc_strdup(talloc_tos(), "");
3595 if (parent_fname == NULL) {
3596 status = NT_STATUS_NO_MEMORY;
3600 size_t dir_name_len = strlen(dir_fsp->fsp_name->base_name);
3603 * Copy in the base directory name.
3606 parent_fname = talloc_array(talloc_tos(), char,
3608 if (parent_fname == NULL) {
3609 status = NT_STATUS_NO_MEMORY;
3612 memcpy(parent_fname, dir_fsp->fsp_name->base_name,
3616 * Ensure it ends in a '/'.
3617 * We used TALLOC_SIZE +2 to add space for the '/'.
3621 && (parent_fname[dir_name_len-1] != '\\')
3622 && (parent_fname[dir_name_len-1] != '/')) {
3623 parent_fname[dir_name_len] = '/';
3624 parent_fname[dir_name_len+1] = '\0';
3628 new_base_name = talloc_asprintf(talloc_tos(), "%s%s", parent_fname,
3629 smb_fname->base_name);
3630 if (new_base_name == NULL) {
3631 status = NT_STATUS_NO_MEMORY;
3635 status = filename_convert(req,
3637 req->flags2 & FLAGS2_DFS_PATHNAMES,
3642 if (!NT_STATUS_IS_OK(status)) {
3647 TALLOC_FREE(parent_fname);
3648 TALLOC_FREE(new_base_name);
3652 NTSTATUS create_file_default(connection_struct *conn,
3653 struct smb_request *req,
3654 uint16_t root_dir_fid,
3655 struct smb_filename *smb_fname,
3656 uint32_t access_mask,
3657 uint32_t share_access,
3658 uint32_t create_disposition,
3659 uint32_t create_options,
3660 uint32_t file_attributes,
3661 uint32_t oplock_request,
3662 uint64_t allocation_size,
3663 uint32_t private_flags,
3664 struct security_descriptor *sd,
3665 struct ea_list *ea_list,
3666 files_struct **result,
3669 int info = FILE_WAS_OPENED;
3670 files_struct *fsp = NULL;
3672 bool stream_name = false;
3674 DEBUG(10,("create_file: access_mask = 0x%x "
3675 "file_attributes = 0x%x, share_access = 0x%x, "
3676 "create_disposition = 0x%x create_options = 0x%x "
3677 "oplock_request = 0x%x "
3678 "private_flags = 0x%x "
3679 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
3681 (unsigned int)access_mask,
3682 (unsigned int)file_attributes,
3683 (unsigned int)share_access,
3684 (unsigned int)create_disposition,
3685 (unsigned int)create_options,
3686 (unsigned int)oplock_request,
3687 (unsigned int)private_flags,
3688 (unsigned int)root_dir_fid,
3689 ea_list, sd, smb_fname_str_dbg(smb_fname)));
3692 * Calculate the filename from the root_dir_if if necessary.
3695 if (root_dir_fid != 0) {
3696 struct smb_filename *smb_fname_out = NULL;
3697 status = get_relative_fid_filename(conn, req, root_dir_fid,
3698 smb_fname, &smb_fname_out);
3699 if (!NT_STATUS_IS_OK(status)) {
3702 smb_fname = smb_fname_out;
3706 * Check to see if this is a mac fork of some kind.
3709 stream_name = is_ntfs_stream_smb_fname(smb_fname);
3711 enum FAKE_FILE_TYPE fake_file_type;
3713 fake_file_type = is_fake_file(smb_fname);
3715 if (fake_file_type != FAKE_FILE_TYPE_NONE) {
3718 * Here we go! support for changing the disk quotas
3721 * We need to fake up to open this MAGIC QUOTA file
3722 * and return a valid FID.
3724 * w2k close this file directly after openening xp
3725 * also tries a QUERY_FILE_INFO on the file and then
3728 status = open_fake_file(req, conn, req->vuid,
3729 fake_file_type, smb_fname,
3731 if (!NT_STATUS_IS_OK(status)) {
3735 ZERO_STRUCT(smb_fname->st);
3739 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
3740 status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
3745 /* All file access must go through check_name() */
3747 status = check_name(conn, smb_fname->base_name);
3748 if (!NT_STATUS_IS_OK(status)) {
3752 if (stream_name && is_ntfs_default_stream_smb_fname(smb_fname)) {
3754 smb_fname->stream_name = NULL;
3755 /* We have to handle this error here. */
3756 if (create_options & FILE_DIRECTORY_FILE) {
3757 status = NT_STATUS_NOT_A_DIRECTORY;
3760 if (lp_posix_pathnames()) {
3761 ret = SMB_VFS_LSTAT(conn, smb_fname);
3763 ret = SMB_VFS_STAT(conn, smb_fname);
3766 if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
3767 status = NT_STATUS_FILE_IS_A_DIRECTORY;
3772 status = create_file_unixpath(
3773 conn, req, smb_fname, access_mask, share_access,
3774 create_disposition, create_options, file_attributes,
3775 oplock_request, allocation_size, private_flags,
3779 if (!NT_STATUS_IS_OK(status)) {
3784 DEBUG(10, ("create_file: info=%d\n", info));
3787 if (pinfo != NULL) {
3790 return NT_STATUS_OK;
3793 DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
3796 close_file(req, fsp, ERROR_CLOSE);