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
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 extern userdom_struct current_user_info;
25 extern uint16 global_oplock_port;
26 extern uint16 global_smbpid;
27 extern BOOL global_client_failed_oplock_break;
29 struct dev_inode_bundle {
34 /****************************************************************************
35 fd support routines - attempt to do a dos_open.
36 ****************************************************************************/
38 static int fd_open(struct connection_struct *conn, const char *fname,
39 int flags, mode_t mode)
43 if (!lp_symlinks(SNUM(conn)))
47 fd = SMB_VFS_OPEN(conn,fname,flags,mode);
49 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n", fname,
50 flags, (int)mode, fd, (fd == -1) ? strerror(errno) : "" ));
55 /****************************************************************************
56 Close the file associated with a fsp.
57 ****************************************************************************/
59 int fd_close(struct connection_struct *conn, files_struct *fsp)
62 return 0; /* what we used to call a stat open. */
63 return fd_close_posix(conn, fsp);
67 /****************************************************************************
68 Check a filename for the pipe string.
69 ****************************************************************************/
71 static void check_for_pipe(const char *fname)
73 /* special case of pipe opens */
75 StrnCpy(s,fname,sizeof(s)-1);
77 if (strstr(s,"pipe/")) {
78 DEBUG(3,("Rejecting named pipe open for %s\n",fname));
79 unix_ERR_class = ERRSRV;
80 unix_ERR_code = ERRaccess;
81 unix_ERR_ntstatus = NT_STATUS_ACCESS_DENIED;
85 /****************************************************************************
87 ****************************************************************************/
89 static BOOL open_file(files_struct *fsp,connection_struct *conn,
90 const char *fname,SMB_STRUCT_STAT *psbuf,int flags,mode_t mode, uint32 desired_access)
92 extern struct current_user current_user;
93 int accmode = (flags & O_ACCMODE);
94 int local_flags = flags;
97 fsp->oplock_type = NO_OPLOCK;
100 /* Check permissions */
103 * This code was changed after seeing a client open request
104 * containing the open mode of (DENY_WRITE/read-only) with
105 * the 'create if not exist' bit set. The previous code
106 * would fail to open the file read only on a read-only share
107 * as it was checking the flags parameter directly against O_RDONLY,
108 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
112 if (!CAN_WRITE(conn)) {
113 /* It's a read-only share - fail if we wanted to write. */
114 if(accmode != O_RDONLY) {
115 DEBUG(3,("Permission denied opening %s\n",fname));
116 check_for_pipe(fname);
118 } else if(flags & O_CREAT) {
119 /* We don't want to write - but we must make sure that O_CREAT
120 doesn't create the file if we have write access into the
124 local_flags &= ~O_CREAT;
129 * This little piece of insanity is inspired by the
130 * fact that an NT client can open a file for O_RDONLY,
131 * but set the create disposition to FILE_EXISTS_TRUNCATE.
132 * If the client *can* write to the file, then it expects to
133 * truncate the file, even though it is opening for readonly.
134 * Quicken uses this stupid trick in backup file creation...
135 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
136 * for helping track this one down. It didn't bite us in 2.0.x
137 * as we always opened files read-write in that release. JRA.
140 if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
141 DEBUG(10,("open_file: truncate requested on read-only open for file %s\n",fname ));
142 local_flags = (flags & ~O_ACCMODE)|O_RDWR;
145 if ((desired_access & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
146 (local_flags & O_CREAT) || ((local_flags & O_TRUNC) == O_TRUNC) ) {
149 * We can't actually truncate here as the file may be locked.
150 * open_file_shared will take care of the truncate later. JRA.
153 local_flags &= ~O_TRUNC;
155 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
157 * We would block on opening a FIFO with no one else on the
158 * other end. Do what we used to do and add O_NONBLOCK to the
162 if (VALID_STAT(*psbuf) && S_ISFIFO(psbuf->st_mode))
163 local_flags |= O_NONBLOCK;
166 /* Don't create files with Microsoft wildcard characters. */
167 if ((local_flags & O_CREAT) && !VALID_STAT(*psbuf) && ms_has_wild(fname)) {
168 unix_ERR_class = ERRDOS;
169 unix_ERR_code = ERRinvalidname;
170 unix_ERR_ntstatus = NT_STATUS_OBJECT_NAME_INVALID;
174 /* Actually do the open */
175 fsp->fd = fd_open(conn, fname, local_flags, mode);
177 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) (flags=%d)\n",
178 fname,strerror(errno),local_flags,flags));
179 check_for_pipe(fname);
183 /* Inherit the ACL if the file was created. */
184 if ((local_flags & O_CREAT) && !VALID_STAT(*psbuf))
185 inherit_access_acl(conn, fname, mode);
188 fsp->fd = -1; /* What we used to call a stat open. */
190 if (!VALID_STAT(*psbuf)) {
194 ret = SMB_VFS_STAT(conn, fname, psbuf);
196 ret = SMB_VFS_FSTAT(fsp,fsp->fd,psbuf);
197 /* If we have an fd, this stat should succeed. */
199 DEBUG(0,("Error doing fstat on open file %s (%s)\n", fname,strerror(errno) ));
202 /* For a non-io open, this stat failing means file not found. JRA */
210 * POSIX allows read-only opens of directories. We don't
211 * want to do this (we use a different code path for this)
212 * so catch a directory open and return an EISDIR. JRA.
215 if(S_ISDIR(psbuf->st_mode)) {
221 fsp->mode = psbuf->st_mode;
222 fsp->inode = psbuf->st_ino;
223 fsp->dev = psbuf->st_dev;
224 fsp->vuid = current_user.vuid;
225 fsp->file_pid = global_smbpid;
226 fsp->size = psbuf->st_size;
227 fsp->can_lock = True;
228 fsp->can_read = ((flags & O_WRONLY)==0);
229 fsp->can_write = ((flags & (O_WRONLY|O_RDWR))!=0);
231 fsp->desired_access = desired_access;
232 fsp->print_file = False;
233 fsp->modified = False;
234 fsp->oplock_type = NO_OPLOCK;
235 fsp->sent_oplock_break = NO_BREAK_SENT;
236 fsp->is_directory = False;
237 fsp->is_stat = False;
238 fsp->directory_delete_on_close = False;
239 string_set(&fsp->fsp_name,fname);
240 fsp->wcp = NULL; /* Write cache pointer. */
242 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
243 *current_user_info.smb_name ? current_user_info.smb_name : conn->user,fsp->fsp_name,
244 BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
245 conn->num_files_open + 1));
251 /*******************************************************************
252 Return True if the filename is one of the special executable types.
253 ********************************************************************/
255 static BOOL is_executable(const char *fname)
257 if ((fname = strrchr_m(fname,'.'))) {
258 if (strequal(fname,".com") ||
259 strequal(fname,".dll") ||
260 strequal(fname,".exe") ||
261 strequal(fname,".sym")) {
268 enum {AFAIL,AREAD,AWRITE,AALL};
270 /*******************************************************************
271 Reproduce the share mode access table.
272 This is horrendoously complex, and really can't be justified on any
273 rational grounds except that this is _exactly_ what NT does. See
274 the DENY1 and DENY2 tests in smbtorture for a comprehensive set of
276 ********************************************************************/
278 static int access_table(int new_deny,int old_deny,int old_mode,
279 BOOL same_pid, BOOL isexe)
281 if (new_deny == DENY_ALL || old_deny == DENY_ALL) return(AFAIL);
284 if (isexe && old_mode == DOS_OPEN_RDONLY &&
285 old_deny == DENY_DOS && new_deny == DENY_READ) {
288 if (!isexe && old_mode == DOS_OPEN_RDONLY &&
289 old_deny == DENY_DOS && new_deny == DENY_DOS) {
292 if (new_deny == DENY_FCB && old_deny == DENY_DOS) {
293 if (isexe) return AFAIL;
294 if (old_mode == DOS_OPEN_RDONLY) return AFAIL;
297 if (old_mode == DOS_OPEN_RDONLY && old_deny == DENY_DOS) {
298 if (new_deny == DENY_FCB || new_deny == DENY_READ) {
299 if (isexe) return AREAD;
303 if (old_deny == DENY_FCB) {
304 if (new_deny == DENY_DOS || new_deny == DENY_FCB) return AALL;
309 if (old_deny == DENY_DOS || new_deny == DENY_DOS ||
310 old_deny == DENY_FCB || new_deny == DENY_FCB) {
312 if (old_deny == DENY_FCB || new_deny == DENY_FCB) {
315 if (old_deny == DENY_DOS) {
316 if (new_deny == DENY_READ &&
317 (old_mode == DOS_OPEN_RDONLY ||
318 old_mode == DOS_OPEN_RDWR)) {
321 if (new_deny == DENY_WRITE &&
322 (old_mode == DOS_OPEN_WRONLY ||
323 old_mode == DOS_OPEN_RDWR)) {
328 if (old_deny == DENY_NONE) return AALL;
329 if (old_deny == DENY_READ) return AWRITE;
330 if (old_deny == DENY_WRITE) return AREAD;
332 /* it isn't a exe, dll, sym or com file */
333 if (old_deny == new_deny && same_pid)
336 if (old_deny == DENY_READ || new_deny == DENY_READ) return AFAIL;
337 if (old_mode == DOS_OPEN_RDONLY) return(AREAD);
345 if (old_deny==DENY_WRITE && old_mode==DOS_OPEN_RDONLY) return(AREAD);
346 if (old_deny==DENY_READ && old_mode==DOS_OPEN_RDONLY) return(AWRITE);
347 if (old_deny==DENY_NONE && old_mode==DOS_OPEN_RDONLY) return(AALL);
350 if (old_deny==DENY_WRITE && old_mode==DOS_OPEN_WRONLY) return(AREAD);
351 if (old_deny==DENY_READ && old_mode==DOS_OPEN_WRONLY) return(AWRITE);
352 if (old_deny==DENY_NONE && old_mode==DOS_OPEN_WRONLY) return(AALL);
355 if (old_deny==DENY_WRITE) return(AREAD);
356 if (old_deny==DENY_READ) return(AWRITE);
357 if (old_deny==DENY_NONE) return(AALL);
363 /****************************************************************************
364 Check if we can open a file with a share mode.
365 ****************************************************************************/
367 static BOOL check_share_mode(connection_struct *conn, share_mode_entry *share, int share_mode, uint32 desired_access,
368 const char *fname, BOOL fcbopen, int *flags)
370 int deny_mode = GET_DENY_MODE(share_mode);
371 int old_open_mode = GET_OPEN_MODE(share->share_mode);
372 int old_deny_mode = GET_DENY_MODE(share->share_mode);
373 BOOL non_io_open_request;
374 BOOL non_io_open_existing;
377 * share modes = false means don't bother to check for
378 * DENY mode conflict. This is a *really* bad idea :-). JRA.
381 if(!lp_share_modes(SNUM(conn)))
384 if (desired_access & ~(SYNCHRONIZE_ACCESS|READ_CONTROL_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES)) {
385 non_io_open_request = False;
387 non_io_open_request = True;
390 if (share->desired_access & ~(SYNCHRONIZE_ACCESS|READ_CONTROL_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES)) {
391 non_io_open_existing = False;
393 non_io_open_existing = True;
397 * Don't allow any opens once the delete on close flag has been
401 if (GET_DELETE_ON_CLOSE_FLAG(share->share_mode)) {
402 DEBUG(5,("check_share_mode: Failing open on file %s as delete on close flag is set.\n",
404 /* Use errno to map to correct error. */
405 unix_ERR_class = SMB_SUCCESS;
407 unix_ERR_ntstatus = NT_STATUS_OK;
411 /* this is a nasty hack, but necessary until we rewrite our open
412 handling to use a NTCreateX call as the basic call.
413 NT may open a file with neither read nor write access, and in
414 this case it expects the open not to conflict with any
415 existing deny modes. This happens (for example) during a
416 "xcopy /o" where the second file descriptor is used for
422 * This is a bit wierd - the test for desired access not having the
423 * critical bits seems seems odd. Firstly, if both opens have no
424 * critical bits then always ignore. Then check the "allow delete"
425 * then check for either. This probably isn't quite right yet but
426 * gets us much closer. JRA.
430 * If desired_access doesn't contain READ_DATA,WRITE_DATA,APPEND_DATA or EXECUTE
431 * and the existing desired_acces then share modes don't conflict.
434 if (non_io_open_request && non_io_open_existing) {
437 * Wrinkle discovered by smbtorture....
438 * If both are non-io open and requester is asking for delete and current open has delete access
439 * but neither open has allowed file share delete then deny.... this is very strange and
440 * seems to be the only case in which non-io opens conflict. JRA.
443 if ((desired_access & DELETE_ACCESS) && (share->desired_access & DELETE_ACCESS) &&
444 (!GET_ALLOW_SHARE_DELETE(share->share_mode) || !GET_ALLOW_SHARE_DELETE(share_mode))) {
445 DEBUG(5,("check_share_mode: Failing open on file %s as delete access requests conflict.\n",
447 unix_ERR_class = ERRDOS;
448 unix_ERR_code = ERRbadshare;
449 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
454 DEBUG(5,("check_share_mode: Allowing open on file %s as both desired access (0x%x) \
455 and existing desired access (0x%x) are non-data opens\n",
456 fname, (unsigned int)desired_access, (unsigned int)share->desired_access ));
458 } else if (non_io_open_request || non_io_open_existing) {
460 * If either are non-io opens then share modes don't conflict.
462 DEBUG(5,("check_share_mode: One non-io open. Allowing open on file %s as desired access (0x%x) doesn't conflict with\
463 existing desired access (0x%x).\n", fname, (unsigned int)desired_access, (unsigned int)share->desired_access ));
468 * If delete access was requested and the existing share mode doesn't have
469 * ALLOW_SHARE_DELETE then deny.
472 if ((desired_access & DELETE_ACCESS) && !GET_ALLOW_SHARE_DELETE(share->share_mode)) {
473 DEBUG(5,("check_share_mode: Failing open on file %s as delete access requested and allow share delete not set.\n",
475 unix_ERR_class = ERRDOS;
476 unix_ERR_code = ERRbadshare;
477 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
483 * The inverse of the above.
484 * If delete access was granted and the new share mode doesn't have
485 * ALLOW_SHARE_DELETE then deny.
488 if ((share->desired_access & DELETE_ACCESS) && !GET_ALLOW_SHARE_DELETE(share_mode)) {
489 DEBUG(5,("check_share_mode: Failing open on file %s as delete access granted and allow share delete not requested.\n",
491 unix_ERR_class = ERRDOS;
492 unix_ERR_code = ERRbadshare;
493 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
498 /* Bluarc test may need this ... needs further investigation. */
499 if (deny_mode == DENY_ALL || old_deny_mode == DENY_ALL) {
500 unix_ERR_class = ERRDOS;
501 unix_ERR_code = ERRbadshare;
502 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
508 * If desired_access doesn't contain READ_DATA,WRITE_DATA,APPEND_DATA or EXECUTE
509 * then share modes don't conflict. Likewise with existing desired access.
512 if ( !(desired_access & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ||
513 !(share->desired_access & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_EXECUTE)) ) {
514 DEBUG(5,("check_share_mode: Allowing open on file %s as desired access (0x%x) doesn't conflict with \
515 existing desired access (0x%x).\n", fname, (unsigned int)desired_access, (unsigned int)share->desired_access ));
520 int access_allowed = access_table(deny_mode,old_deny_mode,old_open_mode,
521 (share->pid == sys_getpid()),is_executable(fname));
523 if ((access_allowed == AFAIL) ||
524 (!fcbopen && (access_allowed == AREAD && *flags == O_RDWR)) ||
525 (access_allowed == AREAD && *flags != O_RDONLY) ||
526 (access_allowed == AWRITE && *flags != O_WRONLY)) {
528 DEBUG(2,("Share violation on file (%d,%d,%d,%d,%s,fcbopen = %d, flags = %d) = %d\n",
529 deny_mode,old_deny_mode,old_open_mode,
530 (int)share->pid,fname, fcbopen, *flags, access_allowed));
532 unix_ERR_class = ERRDOS;
533 unix_ERR_code = ERRbadshare;
534 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
539 if (access_allowed == AREAD)
542 if (access_allowed == AWRITE)
551 #if defined(DEVELOPER)
552 static void validate_my_share_entries(int num, share_mode_entry *share_entry)
556 if (share_entry->pid != sys_getpid())
559 fsp = file_find_dif(share_entry->dev, share_entry->inode, share_entry->share_file_id);
561 DEBUG(0,("validate_my_share_entries: PANIC : %s\n", share_mode_str(num, share_entry) ));
562 smb_panic("validate_my_share_entries: Cannot match a share entry with an open file\n");
565 if (((uint16)fsp->oplock_type) != share_entry->op_type) {
567 DEBUG(0,("validate_my_share_entries: PANIC : %s\n", share_mode_str(num, share_entry) ));
568 slprintf(str, sizeof(str)-1, "validate_my_share_entries: file %s, oplock_type = 0x%x, op_type = 0x%x\n",
569 fsp->fsp_name, (unsigned int)fsp->oplock_type, (unsigned int)share_entry->op_type );
575 struct share_mode_entry_list {
576 struct share_mode_entry_list *next, *prev;
577 share_mode_entry entry;
580 static void free_broken_entry_list(struct share_mode_entry_list *broken_entry_list)
582 while (broken_entry_list) {
583 struct share_mode_entry_list *broken_entry = broken_entry_list;
584 DLIST_REMOVE(broken_entry_list, broken_entry);
585 SAFE_FREE(broken_entry);
589 /****************************************************************************
590 Deal with open deny mode and oplock break processing.
591 Invarient: Share mode must be locked on entry and exit.
592 Returns -1 on error, or number of share modes on success (may be zero).
593 ****************************************************************************/
595 static int open_mode_check(connection_struct *conn, const char *fname, SMB_DEV_T dev,
597 uint32 desired_access,
598 int share_mode, int *p_flags, int *p_oplock_request,
599 BOOL *p_all_current_opens_are_level_II)
603 int oplock_contention_count = 0;
604 share_mode_entry *old_shares = NULL;
605 BOOL fcbopen = False;
608 if(GET_OPEN_MODE(share_mode) == DOS_OPEN_FCB)
611 num_share_modes = get_share_modes(conn, dev, inode, &old_shares);
613 if(num_share_modes == 0) {
614 SAFE_FREE(old_shares);
618 if (desired_access && ((desired_access & ~(SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES))==0) &&
619 ((desired_access & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES)) != 0)) {
620 /* Stat open that doesn't trigger oplock breaks or share mode checks... ! JRA. */
621 SAFE_FREE(old_shares);
622 return num_share_modes;
626 * Check if the share modes will give us access.
630 struct share_mode_entry_list *broken_entry_list = NULL;
631 struct share_mode_entry_list *broken_entry = NULL;
633 broke_oplock = False;
634 *p_all_current_opens_are_level_II = True;
636 for(i = 0; i < num_share_modes; i++) {
637 BOOL cause_oplock_break = False;
638 share_mode_entry *share_entry = &old_shares[i];
640 #if defined(DEVELOPER)
641 validate_my_share_entries(i, share_entry);
645 * By observation of NetBench, oplocks are broken *before* share
646 * modes are checked. This allows a file to be closed by the client
647 * if the share mode would deny access and the client has an oplock.
648 * Check if someone has an oplock on this file. If so we must break
649 * it before continuing.
652 /* Was this a delete this file request ? */
653 if (!*p_oplock_request && desired_access == DELETE_ACCESS &&
654 !BATCH_OPLOCK_TYPE(share_entry->op_type)) {
655 /* Don't break the oplock in this case. */
656 cause_oplock_break = False;
657 } else if((*p_oplock_request && EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type)) ||
658 (!*p_oplock_request && (share_entry->op_type != NO_OPLOCK))) {
659 cause_oplock_break = True;
662 if(cause_oplock_break) {
665 DEBUG(5,("open_mode_check: oplock_request = %d, breaking oplock (%x) on file %s, \
666 dev = %x, inode = %.0f\n", *p_oplock_request, share_entry->op_type, fname, (unsigned int)dev, (double)inode));
668 /* Ensure the reply for the open uses the correct sequence number. */
669 /* This isn't a real deferred packet as it's response will also increment
672 srv_defer_sign_response(get_current_mid());
674 /* Oplock break - unlock to request it. */
675 unlock_share_entry(conn, dev, inode);
677 opb_ret = request_oplock_break(share_entry);
680 lock_share_entry(conn, dev, inode);
682 if(opb_ret == False) {
683 DEBUG(0,("open_mode_check: FAILED when breaking oplock (%x) on file %s, \
684 dev = %x, inode = %.0f\n", old_shares[i].op_type, fname, (unsigned int)dev, (double)inode));
685 SAFE_FREE(old_shares);
687 unix_ERR_class = ERRDOS;
688 unix_ERR_code = ERRbadshare;
689 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
693 broken_entry = SMB_MALLOC_P(struct share_mode_entry_list);
695 smb_panic("open_mode_check: malloc fail.\n");
697 broken_entry->entry = *share_entry;
698 DLIST_ADD(broken_entry_list, broken_entry);
701 } else if (!LEVEL_II_OPLOCK_TYPE(share_entry->op_type)) {
702 *p_all_current_opens_are_level_II = False;
707 /* Update the current open table. */
708 SAFE_FREE(old_shares);
709 num_share_modes = get_share_modes(conn, dev, inode, &old_shares);
712 /* Now we check the share modes, after any oplock breaks. */
713 for(i = 0; i < num_share_modes; i++) {
714 share_mode_entry *share_entry = &old_shares[i];
716 /* someone else has a share lock on it, check to see if we can too */
717 if (!check_share_mode(conn, share_entry, share_mode, desired_access,
718 fname, fcbopen, p_flags)) {
719 SAFE_FREE(old_shares);
720 free_broken_entry_list(broken_entry_list);
726 for(broken_entry = broken_entry_list; broken_entry; broken_entry = broken_entry->next) {
727 oplock_contention_count++;
729 /* Paranoia check that this is no longer an exlusive entry. */
730 for(i = 0; i < num_share_modes; i++) {
731 share_mode_entry *share_entry = &old_shares[i];
733 if (share_modes_identical(&broken_entry->entry, share_entry) &&
734 EXCLUSIVE_OPLOCK_TYPE(share_entry->op_type) ) {
737 * This should not happen. The target left this oplock
738 * as exlusive.... The process *must* be dead....
741 DEBUG(0,("open_mode_check: exlusive oplock left by process %d \
742 after break ! For file %s, dev = %x, inode = %.0f. Deleting it to continue...\n",
743 (int)broken_entry->entry.pid, fname, (unsigned int)dev, (double)inode));
745 if (process_exists(broken_entry->entry.pid)) {
746 DEBUG(0,("open_mode_check: Existent process %lu left active oplock.\n",
747 (unsigned long)broken_entry->entry.pid ));
750 if (del_share_entry(dev, inode, &broken_entry->entry, NULL) == -1) {
751 free_broken_entry_list(broken_entry_list);
753 unix_ERR_class = ERRDOS;
754 unix_ERR_code = ERRbadshare;
755 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
760 * We must reload the share modes after deleting the
761 * other process's entry.
764 SAFE_FREE(old_shares);
765 num_share_modes = get_share_modes(conn, dev, inode, &old_shares);
768 } /* end for paranoia... */
769 } /* end for broken_entry */
770 free_broken_entry_list(broken_entry_list);
771 } while(broke_oplock);
774 * Refuse to grant an oplock in case the contention limit is
775 * reached when going through the lock list multiple times.
778 if(oplock_contention_count >= lp_oplock_contention_limit(SNUM(conn))) {
779 *p_oplock_request = 0;
780 DEBUG(4,("open_mode_check: oplock contention = %d. Not granting oplock.\n",
781 oplock_contention_count ));
784 SAFE_FREE(old_shares);
785 return num_share_modes;
788 /****************************************************************************
789 Delete the record for a handled deferred open entry.
790 ****************************************************************************/
792 static void delete_defered_open_entry_record(connection_struct *conn, SMB_DEV_T dev, SMB_INO_T inode)
794 uint16 mid = get_current_mid();
795 pid_t mypid = sys_getpid();
796 deferred_open_entry *de_array = NULL;
797 int num_de_entries, i;
799 if (!lp_defer_sharing_violations()) {
803 num_de_entries = get_deferred_opens(conn, dev, inode, &de_array);
804 for (i = 0; i < num_de_entries; i++) {
805 deferred_open_entry *entry = &de_array[i];
806 if (entry->pid == mypid && entry->mid == mid && entry->dev == dev &&
807 entry->inode == inode) {
809 /* Remove the deferred open entry from the array. */
810 delete_deferred_open_entry(entry);
818 /****************************************************************************
819 Handle the 1 second delay in returning a SHARING_VIOLATION error.
820 ****************************************************************************/
822 void defer_open_sharing_error(connection_struct *conn, struct timeval *ptv,
823 char *fname, SMB_DEV_T dev, SMB_INO_T inode)
825 uint16 mid = get_current_mid();
826 pid_t mypid = sys_getpid();
827 deferred_open_entry *de_array = NULL;
828 int num_de_entries, i;
829 struct dev_inode_bundle dib;
831 if (!lp_defer_sharing_violations()) {
838 num_de_entries = get_deferred_opens(conn, dev, inode, &de_array);
839 for (i = 0; i < num_de_entries; i++) {
840 deferred_open_entry *entry = &de_array[i];
841 if (entry->pid == mypid && entry->mid == mid) {
843 * Check if a 1 second timeout has expired.
845 if (usec_time_diff(ptv, &entry->time) > SHARING_VIOLATION_USEC_WAIT) {
846 DEBUG(10,("defer_open_sharing_error: Deleting deferred open entry for mid %u, \
848 (unsigned int)mid, fname ));
850 /* Expired, return a real error. */
851 /* Remove the deferred open entry from the array. */
853 delete_deferred_open_entry(entry);
858 * If the timeout hasn't expired yet and we still have a sharing violation,
859 * just leave the entry in the deferred open array alone. We do need to
860 * reschedule this open call though (with the original created time).
862 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] updating \
863 deferred open entry for mid %u, file %s\n",
864 (unsigned int)entry->time.tv_sec,
865 (unsigned int)entry->time.tv_usec,
866 (unsigned int)mid, fname ));
868 push_sharing_violation_open_smb_message(&entry->time, (char *)&dib, sizeof(dib));
874 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred open entry for mid %u, file %s\n",
875 (unsigned int)ptv->tv_sec, (unsigned int)ptv->tv_usec, (unsigned int)mid, fname ));
877 if (!push_sharing_violation_open_smb_message(ptv, (char *)&dib, sizeof(dib))) {
881 if (!add_deferred_open(mid, ptv, dev, inode, global_oplock_port, fname)) {
882 remove_sharing_violation_open_smb_message(mid);
886 * Push the MID of this packet on the signing queue.
887 * We only do this once, the first time we push the packet
888 * onto the deferred open queue, as this has a side effect
889 * of incrementing the response sequence number.
892 srv_defer_sign_response(mid);
897 /****************************************************************************
898 Set a kernel flock on a file for NFS interoperability.
899 This requires a patch to Linux.
900 ****************************************************************************/
902 static void kernel_flock(files_struct *fsp, int deny_mode)
904 #if HAVE_KERNEL_SHARE_MODES
906 if (deny_mode == DENY_READ) kernel_mode = LOCK_MAND|LOCK_WRITE;
907 else if (deny_mode == DENY_WRITE) kernel_mode = LOCK_MAND|LOCK_READ;
908 else if (deny_mode == DENY_ALL) kernel_mode = LOCK_MAND;
909 if (kernel_mode) flock(fsp->fd, kernel_mode);
915 static BOOL open_match_attributes(connection_struct *conn, const char *path, uint32 old_dos_mode, uint32 new_dos_mode,
916 mode_t existing_mode, mode_t new_mode, mode_t *returned_mode)
918 uint32 noarch_old_dos_mode, noarch_new_dos_mode;
920 noarch_old_dos_mode = (old_dos_mode & ~FILE_ATTRIBUTE_ARCHIVE);
921 noarch_new_dos_mode = (new_dos_mode & ~FILE_ATTRIBUTE_ARCHIVE);
923 if((noarch_old_dos_mode == 0 && noarch_new_dos_mode != 0) ||
924 (noarch_old_dos_mode != 0 && ((noarch_old_dos_mode & noarch_new_dos_mode) == noarch_old_dos_mode)))
925 *returned_mode = new_mode;
927 *returned_mode = (mode_t)0;
929 DEBUG(10,("open_match_attributes: file %s old_dos_mode = 0x%x, existing_mode = 0%o, new_dos_mode = 0x%x returned_mode = 0%o\n",
931 old_dos_mode, (unsigned int)existing_mode, new_dos_mode, (unsigned int)*returned_mode ));
933 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
934 if (lp_map_system(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
935 if ((old_dos_mode & FILE_ATTRIBUTE_SYSTEM) && !(new_dos_mode & FILE_ATTRIBUTE_SYSTEM))
938 if (lp_map_hidden(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
939 if ((old_dos_mode & FILE_ATTRIBUTE_HIDDEN) && !(new_dos_mode & FILE_ATTRIBUTE_HIDDEN))
945 /****************************************************************************
946 Open a file with a share mode.
947 ****************************************************************************/
949 files_struct *open_file_shared(connection_struct *conn,char *fname, SMB_STRUCT_STAT *psbuf,
950 int share_mode,int ofun, uint32 new_dos_mode, int oplock_request,
951 int *Access,int *action)
953 return open_file_shared1(conn, fname, psbuf, 0, share_mode, ofun, new_dos_mode,
954 oplock_request, Access, action);
957 /****************************************************************************
958 Open a file with a share mode.
959 ****************************************************************************/
961 files_struct *open_file_shared1(connection_struct *conn,char *fname, SMB_STRUCT_STAT *psbuf,
962 uint32 desired_access,
963 int share_mode,int ofun, uint32 new_dos_mode,
965 int *Access,int *paction)
969 int deny_mode = GET_DENY_MODE(share_mode);
970 BOOL allow_share_delete = GET_ALLOW_SHARE_DELETE(share_mode);
971 BOOL delete_on_close = GET_DELETE_ON_CLOSE_FLAG(share_mode);
972 BOOL file_existed = VALID_STAT(*psbuf);
973 BOOL fcbopen = False;
974 BOOL def_acl = False;
975 BOOL add_share_mode = True;
976 BOOL internal_only_open = False;
979 int num_share_modes = 0;
980 BOOL all_current_opens_are_level_II = False;
981 BOOL fsp_open = False;
982 files_struct *fsp = NULL;
985 mode_t new_mode = (mode_t)0;
987 uint32 existing_dos_mode = 0;
988 struct pending_message_list *pml = NULL;
989 uint16 mid = get_current_mid();
990 /* We add aARCH to this as this mode is only used if the file is created new. */
991 mode_t mode = unix_mode(conn,new_dos_mode | aARCH,fname, True);
993 if (oplock_request == INTERNAL_OPEN_ONLY) {
994 internal_only_open = True;
998 if ((pml = get_open_deferred_message(mid)) != NULL) {
999 struct dev_inode_bundle dib;
1001 memcpy(&dib, pml->private_data.data, sizeof(dib));
1003 /* There could be a race condition where the dev/inode pair
1004 has changed since we deferred the message. If so, just
1005 remove the deferred open entry and return sharing violation. */
1007 /* If the timeout value is non-zero, we need to just
1008 return sharing violation. Don't retry the open
1009 as we were not notified of a close and we don't want to
1010 trigger another spurious oplock break. */
1012 if (!file_existed || dib.dev != psbuf->st_dev || dib.inode != psbuf->st_ino ||
1013 pml->msg_time.tv_sec || pml->msg_time.tv_usec) {
1014 /* Ensure we don't reprocess this message. */
1015 remove_sharing_violation_open_smb_message(mid);
1017 /* Now remove the deferred open entry under lock. */
1018 lock_share_entry(conn, dib.dev, dib.inode);
1019 delete_defered_open_entry_record(conn, dib.dev, dib.inode);
1020 unlock_share_entry(conn, dib.dev, dib.inode);
1022 unix_ERR_class = ERRDOS;
1023 unix_ERR_code = ERRbadshare;
1024 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
1027 /* Ensure we don't reprocess this message. */
1028 remove_sharing_violation_open_smb_message(mid);
1032 if (conn->printer) {
1033 /* printers are handled completely differently. Most of the passed parameters are
1036 *Access = DOS_OPEN_WRONLY;
1038 *paction = FILE_WAS_CREATED;
1039 return print_fsp_open(conn, fname);
1042 fsp = file_new(conn);
1046 DEBUG(10,("open_file_shared: fname = %s, dos_attrs = %x, share_mode = %x, ofun = %x, mode = %o, oplock request = %d\n",
1047 fname, new_dos_mode, share_mode, ofun, (int)mode, oplock_request ));
1049 if (!check_name(fname,conn)) {
1054 new_dos_mode &= SAMBA_ATTRIBUTES_MASK;
1056 existing_dos_mode = dos_mode(conn, fname, psbuf);
1059 /* ignore any oplock requests if oplocks are disabled */
1060 if (!lp_oplocks(SNUM(conn)) || global_client_failed_oplock_break) {
1064 /* this is for OS/2 EAs - try and say we don't support them */
1065 if (strstr(fname,".+,;=[].")) {
1066 unix_ERR_class = ERRDOS;
1067 /* OS/2 Workplace shell fix may be main code stream in a later release. */
1068 #if 1 /* OS2_WPS_FIX - Recent versions of OS/2 need this. */
1069 unix_ERR_code = ERRcannotopen;
1070 #else /* OS2_WPS_FIX */
1071 unix_ERR_code = ERROR_EAS_NOT_SUPPORTED;
1072 #endif /* OS2_WPS_FIX */
1074 DEBUG(5,("open_file_shared: OS/2 EA's are not supported.\n"));
1079 if ((GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_FAIL) && file_existed) {
1080 DEBUG(5,("open_file_shared: create new requested for file %s and file already exists.\n",
1083 if (S_ISDIR(psbuf->st_mode)) {
1091 if (CAN_WRITE(conn) && (GET_FILE_CREATE_DISPOSITION(ofun) == FILE_CREATE_IF_NOT_EXIST))
1094 if (CAN_WRITE(conn) && (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_TRUNCATE))
1097 /* We only care about matching attributes on file exists and truncate. */
1098 if (file_existed && (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_TRUNCATE)) {
1099 if (!open_match_attributes(conn, fname, existing_dos_mode, new_dos_mode,
1100 psbuf->st_mode, mode, &new_mode)) {
1101 DEBUG(5,("open_file_shared: attributes missmatch for file %s (%x %x) (0%o, 0%o)\n",
1102 fname, existing_dos_mode, new_dos_mode,
1103 (int)psbuf->st_mode, (int)mode ));
1110 if (GET_FILE_OPEN_DISPOSITION(ofun) == FILE_EXISTS_FAIL)
1113 /* note that we ignore the append flag as
1114 append does not mean the same thing under dos and unix */
1116 switch (GET_OPEN_MODE(share_mode)) {
1117 case DOS_OPEN_WRONLY:
1119 if (desired_access == 0)
1120 desired_access = FILE_WRITE_DATA;
1125 if (desired_access == 0)
1126 desired_access = FILE_READ_DATA|FILE_WRITE_DATA;
1130 if (desired_access == 0)
1131 desired_access = FILE_READ_DATA|FILE_WRITE_DATA;
1135 if (desired_access == 0)
1136 desired_access = FILE_READ_DATA;
1141 if (GET_FILE_SYNC_OPENMODE(share_mode)) {
1146 if (flags != O_RDONLY && file_existed &&
1147 (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_mode))) {
1149 DEBUG(5,("open_file_shared: read/write access requested for file %s on read only %s\n",
1150 fname, !CAN_WRITE(conn) ? "share" : "file" ));
1158 if (deny_mode > DENY_NONE && deny_mode!=DENY_FCB) {
1159 DEBUG(2,("Invalid deny mode %d on file %s\n",deny_mode,fname));
1165 if (desired_access && ((desired_access & ~(SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES))==0) &&
1166 ((desired_access & (SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES)) != 0)) {
1167 /* Stat open that doesn't trigger oplock breaks or share mode checks... ! JRA. */
1168 deny_mode = DENY_NONE;
1171 add_share_mode = False;
1178 dev = psbuf->st_dev;
1179 inode = psbuf->st_ino;
1181 lock_share_entry(conn, dev, inode);
1183 num_share_modes = open_mode_check(conn, fname, dev, inode,
1186 &flags, &oplock_request, &all_current_opens_are_level_II);
1187 if(num_share_modes == -1) {
1190 * This next line is a subtlety we need for MS-Access. If a file open will
1191 * fail due to share permissions and also for security (access)
1192 * reasons, we need to return the access failed error, not the
1193 * share error. This means we must attempt to open the file anyway
1194 * in order to get the UNIX access error - even if we're going to
1195 * fail the open for share reasons. This is bad, as we're burning
1196 * another fd if there are existing locks but there's nothing else
1197 * we can do. We also ensure we're not going to create or tuncate
1198 * the file as we only want an access decision at this stage. JRA.
1201 fsp_open = open_file(fsp,conn,fname,psbuf,
1202 flags|(flags2&~(O_TRUNC|O_CREAT)),mode,desired_access);
1204 DEBUG(4,("open_file_shared : share_mode deny - calling open_file with \
1205 flags=0x%X flags2=0x%X mode=0%o returned %d\n",
1206 flags,(flags2&~(O_TRUNC|O_CREAT)),(int)mode,(int)fsp_open ));
1208 if (!fsp_open && errno) {
1209 unix_ERR_class = ERRDOS;
1210 unix_ERR_code = ERRnoaccess;
1211 unix_ERR_ntstatus = NT_STATUS_ACCESS_DENIED;
1215 * If we're returning a share violation, ensure we cope with
1216 * the braindead 1 second delay.
1219 if (!internal_only_open && NT_STATUS_EQUAL(unix_ERR_ntstatus,NT_STATUS_SHARING_VIOLATION)) {
1220 /* The fsp->open_time here represents the current time of day. */
1221 defer_open_sharing_error(conn, &fsp->open_time, fname, dev, inode);
1224 unlock_share_entry(conn, dev, inode);
1226 fd_close(conn, fsp);
1228 * We have detected a sharing violation here
1229 * so return the correct error code
1231 unix_ERR_class = ERRDOS;
1232 unix_ERR_code = ERRbadshare;
1233 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
1240 * We exit this block with the share entry *locked*.....
1245 * Ensure we pay attention to default ACLs on directories if required.
1248 if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
1249 (def_acl = directory_has_default_acl(conn, parent_dirname(fname))))
1252 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o\n",
1253 flags,flags2,(int)mode));
1256 * open_file strips any O_TRUNC flags itself.
1259 fsp_open = open_file(fsp,conn,fname,psbuf,flags|flags2,mode,desired_access);
1261 if (!fsp_open && (flags == O_RDWR) && (errno != ENOENT) && fcbopen) {
1262 if((fsp_open = open_file(fsp,conn,fname,psbuf,O_RDONLY,mode,desired_access)) == True)
1268 unlock_share_entry(conn, dev, inode);
1274 * Deal with the race condition where two smbd's detect the file doesn't
1275 * exist and do the create at the same time. One of them will win and
1276 * set a share mode, the other (ie. this one) should check if the
1277 * requested share mode for this create is allowed.
1280 if (!file_existed) {
1283 * Now the file exists and fsp is successfully opened,
1284 * fsp->dev and fsp->inode are valid and should replace the
1285 * dev=0,inode=0 from a non existent file. Spotted by
1286 * Nadav Danieli <nadavd@exanet.com>. JRA.
1292 lock_share_entry_fsp(fsp);
1294 num_share_modes = open_mode_check(conn, fname, dev, inode,
1297 &flags, &oplock_request, &all_current_opens_are_level_II);
1299 if(num_share_modes == -1) {
1301 * If we're returning a share violation, ensure we cope with
1302 * the braindead 1 second delay.
1305 if (!internal_only_open && NT_STATUS_EQUAL(unix_ERR_ntstatus,NT_STATUS_SHARING_VIOLATION)) {
1306 /* The fsp->open_time here represents the current time of day. */
1307 defer_open_sharing_error(conn, &fsp->open_time, fname, dev, inode);
1310 unlock_share_entry_fsp(fsp);
1314 * We have detected a sharing violation here, so
1315 * return the correct code.
1317 unix_ERR_class = ERRDOS;
1318 unix_ERR_code = ERRbadshare;
1319 unix_ERR_ntstatus = NT_STATUS_SHARING_VIOLATION;
1324 * If there are any share modes set then the file *did*
1325 * exist. Ensure we return the correct value for action.
1328 if (num_share_modes > 0)
1329 file_existed = True;
1332 * We exit this block with the share entry *locked*.....
1336 /* note that we ignore failure for the following. It is
1337 basically a hack for NFS, and NFS will never set one of
1338 these only read them. Nobody but Samba can ever set a deny
1339 mode and we have already checked our more authoritative
1340 locking database for permission to set this deny mode. If
1341 the kernel refuses the operations then the kernel is wrong */
1342 kernel_flock(fsp, deny_mode);
1345 * At this point onwards, we can guarentee that the share entry
1346 * is locked, whether we created the file or not, and that the
1347 * deny mode is compatible with all current opens.
1351 * If requested, truncate the file.
1354 if (flags2&O_TRUNC) {
1356 * We are modifing the file after open - update the stat struct..
1358 if ((SMB_VFS_FTRUNCATE(fsp,fsp->fd,0) == -1) || (SMB_VFS_FSTAT(fsp,fsp->fd,psbuf)==-1)) {
1359 unlock_share_entry_fsp(fsp);
1368 open_mode = DOS_OPEN_RDONLY;
1371 open_mode = DOS_OPEN_RDWR;
1374 open_mode = DOS_OPEN_WRONLY;
1378 fsp->share_mode = SET_DENY_MODE(deny_mode) |
1379 SET_OPEN_MODE(open_mode) |
1380 SET_ALLOW_SHARE_DELETE(allow_share_delete);
1382 DEBUG(10,("open_file_shared : share_mode = %x\n", fsp->share_mode ));
1385 (*Access) = open_mode;
1390 if (file_existed && !(flags2 & O_TRUNC))
1391 action = FILE_WAS_OPENED;
1392 if (file_existed && (flags2 & O_TRUNC))
1393 action = FILE_WAS_OVERWRITTEN;
1395 action = FILE_WAS_CREATED;
1402 * Setup the oplock info in both the shared memory and
1406 if(oplock_request && (num_share_modes == 0) &&
1407 !IS_VETO_OPLOCK_PATH(conn,fname) && set_file_oplock(fsp, oplock_request) ) {
1408 port = global_oplock_port;
1409 } else if (oplock_request && all_current_opens_are_level_II) {
1410 port = global_oplock_port;
1411 oplock_request = LEVEL_II_OPLOCK;
1412 set_file_oplock(fsp, oplock_request);
1418 if (add_share_mode) {
1419 set_share_mode(fsp, port, oplock_request);
1422 if (delete_on_close) {
1423 uint32 dosmode = existing_dos_mode;
1426 if (action == FILE_WAS_OVERWRITTEN || action == FILE_WAS_CREATED) {
1427 dosmode = new_dos_mode;
1429 result = set_delete_on_close_internal(fsp, delete_on_close, dosmode);
1431 if (NT_STATUS_V(result) != NT_STATUS_V(NT_STATUS_OK)) {
1434 /* Remember to delete the mode we just added. */
1435 if (add_share_mode) {
1436 del_share_mode(fsp, NULL);
1438 unlock_share_entry_fsp(fsp);
1441 ntstatus_to_dos(result, &u_e_c, &u_e_code);
1442 unix_ERR_ntstatus = result;
1443 unix_ERR_class = u_e_c;
1444 unix_ERR_code = u_e_code;
1449 if (action == FILE_WAS_OVERWRITTEN || action == FILE_WAS_CREATED) {
1450 /* Files should be initially set as archive */
1451 if (lp_map_archive(SNUM(conn)) || lp_store_dos_attributes(SNUM(conn))) {
1452 file_set_dosmode(conn, fname, new_dos_mode | aARCH, NULL, True);
1457 * Take care of inherited ACLs on created files - if default ACL not
1461 if (!file_existed && !def_acl) {
1463 int saved_errno = errno; /* We might get ENOSYS in the next call.. */
1465 if (SMB_VFS_FCHMOD_ACL(fsp, fsp->fd, mode) == -1 && errno == ENOSYS)
1466 errno = saved_errno; /* Ignore ENOSYS */
1468 } else if (new_mode) {
1472 /* Attributes need changing. File already existed. */
1475 int saved_errno = errno; /* We might get ENOSYS in the next call.. */
1476 ret = SMB_VFS_FCHMOD_ACL(fsp, fsp->fd, new_mode);
1478 if (ret == -1 && errno == ENOSYS) {
1479 errno = saved_errno; /* Ignore ENOSYS */
1481 DEBUG(5, ("open_file_shared: failed to reset attributes of file %s to 0%o\n",
1482 fname, (int)new_mode));
1483 ret = 0; /* Don't do the fchmod below. */
1487 if ((ret == -1) && (SMB_VFS_FCHMOD(fsp, fsp->fd, new_mode) == -1))
1488 DEBUG(5, ("open_file_shared: failed to reset attributes of file %s to 0%o\n",
1489 fname, (int)new_mode));
1492 /* If this is a successful open, we must remove any deferred open records. */
1493 delete_defered_open_entry_record(conn, fsp->dev, fsp->inode);
1494 unlock_share_entry_fsp(fsp);
1496 conn->num_files_open++;
1501 /****************************************************************************
1502 Open a file for for write to ensure that we can fchmod it.
1503 ****************************************************************************/
1505 files_struct *open_file_fchmod(connection_struct *conn, const char *fname, SMB_STRUCT_STAT *psbuf)
1507 files_struct *fsp = NULL;
1510 if (!VALID_STAT(*psbuf))
1513 fsp = file_new(conn);
1517 /* note! we must use a non-zero desired access or we don't get
1518 a real file descriptor. Oh what a twisted web we weave. */
1519 fsp_open = open_file(fsp,conn,fname,psbuf,O_WRONLY,0,FILE_WRITE_DATA);
1522 * This is not a user visible file open.
1523 * Don't set a share mode and don't increment
1524 * the conn->num_files_open.
1535 /****************************************************************************
1536 Close the fchmod file fd - ensure no locks are lost.
1537 ****************************************************************************/
1539 int close_file_fchmod(files_struct *fsp)
1541 int ret = fd_close(fsp->conn, fsp);
1546 /****************************************************************************
1547 Open a directory from an NT SMB call.
1548 ****************************************************************************/
1550 files_struct *open_directory(connection_struct *conn, char *fname, SMB_STRUCT_STAT *psbuf,
1551 uint32 desired_access, int share_mode, int smb_ofun, int *action)
1553 extern struct current_user current_user;
1554 BOOL got_stat = False;
1555 files_struct *fsp = file_new(conn);
1556 BOOL delete_on_close = GET_DELETE_ON_CLOSE_FLAG(share_mode);
1561 if (VALID_STAT(*psbuf))
1564 if (got_stat && (GET_FILE_OPEN_DISPOSITION(smb_ofun) == FILE_EXISTS_FAIL)) {
1566 errno = EEXIST; /* Setup so correct error is returned to client. */
1570 if (GET_FILE_CREATE_DISPOSITION(smb_ofun) == FILE_CREATE_IF_NOT_EXIST) {
1574 if(!S_ISDIR(psbuf->st_mode)) {
1575 DEBUG(0,("open_directory: %s is not a directory !\n", fname ));
1580 *action = FILE_WAS_OPENED;
1585 * Try and create the directory.
1588 if(!CAN_WRITE(conn)) {
1589 DEBUG(2,("open_directory: failing create on read-only share\n"));
1595 if (ms_has_wild(fname)) {
1597 DEBUG(5,("open_directory: failing create on filename %s with wildcards\n", fname));
1598 unix_ERR_class = ERRDOS;
1599 unix_ERR_code = ERRinvalidname;
1600 unix_ERR_ntstatus = NT_STATUS_OBJECT_NAME_INVALID;
1604 if( strchr_m(fname, ':')) {
1606 DEBUG(5,("open_directory: failing create on filename %s with colon in name\n", fname));
1607 unix_ERR_class = ERRDOS;
1608 unix_ERR_code = ERRinvalidname;
1609 unix_ERR_ntstatus = NT_STATUS_NOT_A_DIRECTORY;
1613 if(vfs_MkDir(conn,fname, unix_mode(conn,aDIR, fname, True)) < 0) {
1614 DEBUG(2,("open_directory: unable to create %s. Error was %s\n",
1615 fname, strerror(errno) ));
1620 if(SMB_VFS_STAT(conn,fname, psbuf) != 0) {
1625 *action = FILE_WAS_CREATED;
1631 * Don't create - just check that it *was* a directory.
1635 DEBUG(3,("open_directory: unable to stat name = %s. Error was %s\n",
1636 fname, strerror(errno) ));
1641 if(!S_ISDIR(psbuf->st_mode)) {
1642 DEBUG(0,("open_directory: %s is not a directory !\n", fname ));
1647 *action = FILE_WAS_OPENED;
1650 DEBUG(5,("open_directory: opening directory %s\n", fname));
1653 * Setup the files_struct for it.
1656 fsp->mode = psbuf->st_mode;
1657 fsp->inode = psbuf->st_ino;
1658 fsp->dev = psbuf->st_dev;
1659 fsp->size = psbuf->st_size;
1660 fsp->vuid = current_user.vuid;
1661 fsp->file_pid = global_smbpid;
1662 fsp->can_lock = True;
1663 fsp->can_read = False;
1664 fsp->can_write = False;
1665 fsp->share_mode = share_mode;
1666 fsp->desired_access = desired_access;
1667 fsp->print_file = False;
1668 fsp->modified = False;
1669 fsp->oplock_type = NO_OPLOCK;
1670 fsp->sent_oplock_break = NO_BREAK_SENT;
1671 fsp->is_directory = True;
1672 fsp->is_stat = False;
1673 fsp->directory_delete_on_close = False;
1674 string_set(&fsp->fsp_name,fname);
1676 if (delete_on_close) {
1677 NTSTATUS result = set_delete_on_close_internal(fsp, delete_on_close, 0);
1679 if (NT_STATUS_V(result) != NT_STATUS_V(NT_STATUS_OK)) {
1684 conn->num_files_open++;
1689 /****************************************************************************
1690 Open a pseudo-file (no locking checks - a 'stat' open).
1691 ****************************************************************************/
1693 files_struct *open_file_stat(connection_struct *conn, char *fname, SMB_STRUCT_STAT *psbuf)
1695 extern struct current_user current_user;
1696 files_struct *fsp = NULL;
1698 if (!VALID_STAT(*psbuf))
1701 /* Can't 'stat' open directories. */
1702 if(S_ISDIR(psbuf->st_mode))
1705 fsp = file_new(conn);
1709 DEBUG(5,("open_file_stat: 'opening' file %s\n", fname));
1712 * Setup the files_struct for it.
1715 fsp->mode = psbuf->st_mode;
1716 fsp->inode = psbuf->st_ino;
1717 fsp->dev = psbuf->st_dev;
1718 fsp->size = psbuf->st_size;
1719 fsp->vuid = current_user.vuid;
1720 fsp->file_pid = global_smbpid;
1721 fsp->can_lock = False;
1722 fsp->can_read = False;
1723 fsp->can_write = False;
1724 fsp->share_mode = 0;
1725 fsp->desired_access = 0;
1726 fsp->print_file = False;
1727 fsp->modified = False;
1728 fsp->oplock_type = NO_OPLOCK;
1729 fsp->sent_oplock_break = NO_BREAK_SENT;
1730 fsp->is_directory = False;
1731 fsp->is_stat = True;
1732 fsp->directory_delete_on_close = False;
1733 string_set(&fsp->fsp_name,fname);
1735 conn->num_files_open++;