2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 1992-2004.
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 2 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, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 /****************************************************************************
26 Run a file if it is a magic script.
27 ****************************************************************************/
29 static void check_magic(files_struct *fsp,connection_struct *conn)
31 if (!*lp_magicscript(SNUM(conn)))
34 DEBUG(5,("checking magic for %s\n",fsp->fsp_name));
38 if (!(p = strrchr_m(fsp->fsp_name,'/')))
43 if (!strequal(lp_magicscript(SNUM(conn)),p))
54 pstrcpy(fname,fsp->fsp_name);
55 if (*lp_magicoutput(SNUM(conn)))
56 pstrcpy(magic_output,lp_magicoutput(SNUM(conn)));
58 slprintf(magic_output,sizeof(fname)-1, "%s.out",fname);
61 ret = smbrun(fname,&tmp_fd);
62 DEBUG(3,("Invoking magic command %s gave %d\n",fname,ret));
64 if (ret != 0 || tmp_fd == -1) {
69 outfd = open(magic_output, O_CREAT|O_EXCL|O_RDWR, 0600);
75 if (sys_fstat(tmp_fd,&st) == -1) {
81 transfer_file(tmp_fd,outfd,(SMB_OFF_T)st.st_size);
87 /****************************************************************************
88 Common code to close a file or a directory.
89 ****************************************************************************/
91 static int close_filestruct(files_struct *fsp)
93 connection_struct *conn = fsp->conn;
96 if (fsp->fh->fd != -1) {
97 if(flush_write_cache(fsp, CLOSE_FLUSH) == -1)
100 delete_write_cache(fsp);
103 conn->num_files_open--;
104 SAFE_FREE(fsp->wbmpx_ptr);
109 /****************************************************************************
110 If any deferred opens are waiting on this close, notify them.
111 ****************************************************************************/
113 static void notify_deferred_opens(struct share_mode_lock *lck)
117 for (i=0; i<lck->num_share_modes; i++) {
118 struct share_mode_entry *e = &lck->share_modes[i];
120 if (!is_deferred_open_entry(e)) {
124 if (procid_is_me(&e->pid)) {
126 * We need to notify ourself to retry the open. Do
127 * this by finding the queued SMB record, moving it to
128 * the head of the queue and changing the wait time to
131 schedule_deferred_open_smb_message(e->op_mid);
133 char msg[MSG_SMB_SHARE_MODE_ENTRY_SIZE];
135 share_mode_entry_to_message(msg, e);
138 message_send_pid(e->pid, MSG_SMB_OPEN_RETRY,
139 msg, MSG_SMB_SHARE_MODE_ENTRY_SIZE, True);
145 /****************************************************************************
146 Deal with removing a share mode on last close.
147 ****************************************************************************/
149 static int close_remove_share_mode(files_struct *fsp, enum file_close_type close_type)
151 connection_struct *conn = fsp->conn;
152 BOOL delete_file = False;
153 struct share_mode_lock *lck;
156 * Lock the share entries, and determine if we should delete
157 * on close. If so delete whilst the lock is still in effect.
158 * This prevents race conditions with the file being created. JRA.
161 lck = get_share_mode_lock(NULL, fsp->dev, fsp->inode, NULL, NULL);
164 DEBUG(0, ("close_remove_share_mode: Could not get share mode lock for file %s\n", fsp->fsp_name));
168 if (!del_share_mode(lck, fsp)) {
169 DEBUG(0, ("close_remove_share_mode: Could not delete share entry for file %s\n", fsp->fsp_name));
172 delete_file = (lck->delete_on_close | lck->initial_delete_on_close);
176 /* See if others still have the file open. If this is the
177 * case, then don't delete */
178 for (i=0; i<lck->num_share_modes; i++) {
179 if (is_valid_share_mode_entry(&lck->share_modes[i])) {
186 /* Notify any deferred opens waiting on this close. */
187 notify_deferred_opens(lck);
188 reply_to_oplock_break_requests(fsp);
191 * NT can set delete_on_close of the last open
192 * reference to a file.
195 if ((close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) &&
198 SMB_STRUCT_STAT sbuf;
200 DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set - deleting file.\n",
203 /* Become the user who requested the delete. */
205 if (!push_sec_ctx()) {
206 smb_panic("close_remove_share_mode: file %s. failed to push sec_ctx.\n");
209 set_sec_ctx(lck->delete_token->uid,
210 lck->delete_token->gid,
211 lck->delete_token->ngroups,
212 lck->delete_token->groups,
215 /* We can only delete the file if the name we have
216 is still valid and hasn't been renamed. */
218 if(SMB_VFS_STAT(conn,fsp->fsp_name,&sbuf) != 0) {
219 DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
220 "and stat failed with error %s\n",
221 fsp->fsp_name, strerror(errno) ));
223 if(sbuf.st_dev != fsp->dev || sbuf.st_ino != fsp->inode) {
224 DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set and "
225 "dev and/or inode does not match\n",
227 DEBUG(5,("close_remove_share_mode: file %s. stored dev = %x, inode = %.0f "
228 "stat dev = %x, inode = %.0f\n",
230 (unsigned int)fsp->dev, (double)fsp->inode,
231 (unsigned int)sbuf.st_dev, (double)sbuf.st_ino ));
233 } else if(SMB_VFS_UNLINK(conn,fsp->fsp_name) != 0) {
235 * This call can potentially fail as another smbd may have
236 * had the file open with delete on close set and deleted
237 * it when its last reference to this file went away. Hence
238 * we log this but not at debug level zero.
241 DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
242 "and unlink failed with error %s\n",
243 fsp->fsp_name, strerror(errno) ));
249 process_pending_change_notify_queue((time_t)0);
256 /****************************************************************************
259 close_type can be NORMAL_CLOSE=0,SHUTDOWN_CLOSE,ERROR_CLOSE.
260 printing and magic scripts are only run on normal close.
261 delete on close is done on normal and shutdown close.
262 ****************************************************************************/
264 static int close_normal_file(files_struct *fsp, enum file_close_type close_type)
266 connection_struct *conn = fsp->conn;
271 if (fsp->aio_write_behind) {
273 * If we're finishing write behind on a close we can get a write
274 * error here, we must remember this.
276 int ret = wait_for_aio_completion(fsp);
282 cancel_aio_by_fsp(fsp);
286 * If we're flushing on a close we can get a write
287 * error here, we must remember this.
290 if (close_filestruct(fsp) == -1) {
295 if (fsp->print_file) {
296 print_fsp_end(fsp, close_type);
301 /* If this is an old DOS or FCB open and we have multiple opens on
302 the same handle we only have one share mode. Ensure we only remove
303 the share mode on the last close. */
305 if (fsp->fh->ref_count == 1) {
306 /* Should we return on error here... ? */
307 close_remove_share_mode(fsp, close_type);
310 if(fsp->oplock_type) {
311 release_file_oplock(fsp);
314 locking_close_file(fsp);
316 err = fd_close(conn, fsp);
318 /* Only save errno if fd_close failed and we don't already
319 have an errno saved from a flush call. */
320 if ((err1 != -1) && (err == -1)) {
324 /* check for magic scripts */
325 if (close_type == NORMAL_CLOSE) {
326 check_magic(fsp,conn);
330 * Ensure pending modtime is set after close.
333 if(fsp->pending_modtime && fsp->pending_modtime_owner) {
334 set_filetime(conn, fsp->fsp_name, fsp->pending_modtime);
335 } else if (fsp->last_write_time) {
336 set_filetime(conn, fsp->fsp_name, fsp->last_write_time);
339 DEBUG(2,("%s closed file %s (numopen=%d) %s\n",
340 conn->user,fsp->fsp_name,
341 conn->num_files_open,
342 (err == -1 || err1 == -1) ? strerror(saved_errno) : ""));
346 if (err == -1 || err1 == -1) {
354 /****************************************************************************
355 Close a directory opened by an NT SMB call.
356 ****************************************************************************/
358 static int close_directory(files_struct *fsp, enum file_close_type close_type)
360 struct share_mode_lock *lck = 0;
361 BOOL delete_dir = False;
364 * NT can set delete_on_close of the last open
365 * reference to a directory also.
368 lck = get_share_mode_lock(NULL, fsp->dev, fsp->inode, NULL, NULL);
371 DEBUG(0, ("close_directory: Could not get share mode lock for %s\n", fsp->fsp_name));
375 if (!del_share_mode(lck, fsp)) {
376 DEBUG(0, ("close_directory: Could not delete share entry for %s\n", fsp->fsp_name));
379 delete_dir = (lck->delete_on_close | lck->initial_delete_on_close);
381 if ((close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) &&
386 /* Become the user who requested the delete. */
388 if (!push_sec_ctx()) {
389 smb_panic("close_directory: failed to push sec_ctx.\n");
392 set_sec_ctx(lck->delete_token->uid,
393 lck->delete_token->gid,
394 lck->delete_token->ngroups,
395 lck->delete_token->groups,
400 ok = rmdir_internals(fsp->conn, fsp->fsp_name);
402 DEBUG(5,("close_directory: %s. Delete on close was set - deleting directory %s.\n",
403 fsp->fsp_name, ok ? "succeeded" : "failed" ));
409 * Ensure we remove any change notify requests that would
410 * now fail as the directory has been deleted.
414 remove_pending_change_notify_requests_by_fid(fsp, NT_STATUS_DELETE_PENDING);
415 remove_pending_change_notify_requests_by_filename(fsp, NT_STATUS_DELETE_PENDING);
418 process_pending_change_notify_queue((time_t)0);
421 remove_pending_change_notify_requests_by_fid(fsp, NT_STATUS_CANCELLED);
425 * Do the code common to files and directories.
427 close_filestruct(fsp);
432 /****************************************************************************
433 Close a 'stat file' opened internally.
434 ****************************************************************************/
436 static int close_stat(files_struct *fsp)
439 * Do the code common to files and directories.
441 close_filestruct(fsp);
446 /****************************************************************************
447 Close a files_struct.
448 ****************************************************************************/
450 int close_file(files_struct *fsp, enum file_close_type close_type)
452 if(fsp->is_directory)
453 return close_directory(fsp, close_type);
454 else if (fsp->is_stat)
455 return close_stat(fsp);
456 else if (fsp->fake_file_handle != NULL)
457 return close_fake_file(fsp);
459 return close_normal_file(fsp, close_type);