-/*
+/*
Unix SMB/CIFS implementation.
file closing
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Jeremy Allison 1992-2007.
Copyright (C) Volker Lendecke 2005
-
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
Run a file if it is a magic script.
****************************************************************************/
-static void check_magic(files_struct *fsp,connection_struct *conn)
+static void check_magic(struct files_struct *fsp)
{
- if (!*lp_magicscript(SNUM(conn)))
+ int ret;
+ const char *magic_output = NULL;
+ SMB_STRUCT_STAT st;
+ int tmp_fd, outfd;
+ TALLOC_CTX *ctx = NULL;
+ const char *p;
+ struct connection_struct *conn = fsp->conn;
+
+ if (!*lp_magicscript(SNUM(conn))) {
return;
+ }
DEBUG(5,("checking magic for %s\n",fsp->fsp_name));
- {
- char *p;
- if (!(p = strrchr_m(fsp->fsp_name,'/')))
- p = fsp->fsp_name;
- else
- p++;
-
- if (!strequal(lp_magicscript(SNUM(conn)),p))
- return;
- }
-
- {
- int ret;
- pstring magic_output;
- pstring fname;
- SMB_STRUCT_STAT st;
- int tmp_fd, outfd;
-
- pstrcpy(fname,fsp->fsp_name);
- if (*lp_magicoutput(SNUM(conn)))
- pstrcpy(magic_output,lp_magicoutput(SNUM(conn)));
- else
- slprintf(magic_output,sizeof(fname)-1, "%s.out",fname);
-
- chmod(fname,0755);
- ret = smbrun(fname,&tmp_fd);
- DEBUG(3,("Invoking magic command %s gave %d\n",fname,ret));
- unlink(fname);
- if (ret != 0 || tmp_fd == -1) {
- if (tmp_fd != -1)
- close(tmp_fd);
- return;
- }
- outfd = open(magic_output, O_CREAT|O_EXCL|O_RDWR, 0600);
- if (outfd == -1) {
- close(tmp_fd);
- return;
- }
+ if (!(p = strrchr_m(fsp->fsp_name,'/'))) {
+ p = fsp->fsp_name;
+ } else {
+ p++;
+ }
+
+ if (!strequal(lp_magicscript(SNUM(conn)),p)) {
+ return;
+ }
+
+ ctx = talloc_stackframe();
+
+ if (*lp_magicoutput(SNUM(conn))) {
+ magic_output = lp_magicoutput(SNUM(conn));
+ } else {
+ magic_output = talloc_asprintf(ctx,
+ "%s.out",
+ fsp->fsp_name);
+ }
+ if (!magic_output) {
+ TALLOC_FREE(ctx);
+ return;
+ }
+
+ /* Ensure we don't depend on user's PATH. */
+ p = talloc_asprintf(ctx, "./%s", fsp->fsp_name);
+ if (!p) {
+ TALLOC_FREE(ctx);
+ return;
+ }
- if (sys_fstat(tmp_fd,&st) == -1) {
+ if (chmod(fsp->fsp_name,0755) == -1) {
+ TALLOC_FREE(ctx);
+ return;
+ }
+ ret = smbrun(p,&tmp_fd);
+ DEBUG(3,("Invoking magic command %s gave %d\n",
+ p,ret));
+
+ unlink(fsp->fsp_name);
+ if (ret != 0 || tmp_fd == -1) {
+ if (tmp_fd != -1) {
close(tmp_fd);
- close(outfd);
- return;
}
+ TALLOC_FREE(ctx);
+ return;
+ }
+ outfd = open(magic_output, O_CREAT|O_EXCL|O_RDWR, 0600);
+ if (outfd == -1) {
+ close(tmp_fd);
+ TALLOC_FREE(ctx);
+ return;
+ }
- transfer_file(tmp_fd,outfd,(SMB_OFF_T)st.st_size);
+ if (sys_fstat(tmp_fd,&st) == -1) {
close(tmp_fd);
close(outfd);
+ return;
}
+
+ transfer_file(tmp_fd,outfd,(SMB_OFF_T)st.st_size);
+ close(tmp_fd);
+ close(outfd);
+ TALLOC_FREE(ctx);
}
/****************************************************************************
****************************************************************************/
static NTSTATUS close_filestruct(files_struct *fsp)
-{
+{
NTSTATUS status = NT_STATUS_OK;
- connection_struct *conn = fsp->conn;
-
+
if (fsp->fh->fd != -1) {
if(flush_write_cache(fsp, CLOSE_FLUSH) == -1) {
status = map_nt_error_from_unix(errno);
delete_write_cache(fsp);
}
- conn->num_files_open--;
- SAFE_FREE(fsp->wbmpx_ptr);
return status;
-}
+}
/****************************************************************************
If any deferred opens are waiting on this close, notify them.
static void notify_deferred_opens(struct share_mode_lock *lck)
{
int i;
+
+ if (!should_notify_deferred_opens()) {
+ return;
+ }
for (i=0; i<lck->num_share_modes; i++) {
struct share_mode_entry *e = &lck->share_modes[i];
}
}
+/****************************************************************************
+ Delete all streams
+****************************************************************************/
+
+NTSTATUS delete_all_streams(connection_struct *conn, const char *fname)
+{
+ struct stream_struct *stream_info;
+ int i;
+ unsigned int num_streams;
+ TALLOC_CTX *frame = talloc_stackframe();
+ NTSTATUS status;
+
+ status = SMB_VFS_STREAMINFO(conn, NULL, fname, talloc_tos(),
+ &num_streams, &stream_info);
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)) {
+ DEBUG(10, ("no streams around\n"));
+ TALLOC_FREE(frame);
+ return NT_STATUS_OK;
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10, ("SMB_VFS_STREAMINFO failed: %s\n",
+ nt_errstr(status)));
+ goto fail;
+ }
+
+ DEBUG(10, ("delete_all_streams found %d streams\n",
+ num_streams));
+
+ if (num_streams == 0) {
+ TALLOC_FREE(frame);
+ return NT_STATUS_OK;
+ }
+
+ for (i=0; i<num_streams; i++) {
+ int res;
+ char *streamname;
+
+ if (strequal(stream_info[i].name, "::$DATA")) {
+ continue;
+ }
+
+ streamname = talloc_asprintf(talloc_tos(), "%s%s", fname,
+ stream_info[i].name);
+
+ if (streamname == NULL) {
+ DEBUG(0, ("talloc_aprintf failed\n"));
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
+ }
+
+ res = SMB_VFS_UNLINK(conn, streamname);
+
+ TALLOC_FREE(streamname);
+
+ if (res == -1) {
+ status = map_nt_error_from_unix(errno);
+ DEBUG(10, ("Could not delete stream %s: %s\n",
+ streamname, strerror(errno)));
+ break;
+ }
+ }
+
+ fail:
+ TALLOC_FREE(frame);
+ return status;
+}
+
/****************************************************************************
Deal with removing a share mode on last close.
****************************************************************************/
enum file_close_type close_type)
{
connection_struct *conn = fsp->conn;
- BOOL delete_file = False;
+ bool delete_file = false;
+ bool changed_user = false;
struct share_mode_lock *lck;
SMB_STRUCT_STAT sbuf;
NTSTATUS status = NT_STATUS_OK;
* This prevents race conditions with the file being created. JRA.
*/
- lck = get_share_mode_lock(NULL, fsp->file_id, NULL, NULL);
+ lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
+ NULL);
if (lck == NULL) {
DEBUG(0, ("close_remove_share_mode: Could not get share mode "
return NT_STATUS_INVALID_PARAMETER;
}
+ if (fsp->write_time_forced) {
+ set_close_write_time(fsp, lck->changed_write_time);
+ }
+
if (!del_share_mode(lck, fsp)) {
DEBUG(0, ("close_remove_share_mode: Could not delete share "
"entry for file %s\n", fsp->fsp_name));
}
if (fsp->initial_delete_on_close && (lck->delete_token == NULL)) {
- BOOL became_user = False;
+ bool became_user = False;
/* Initial delete on close was set and no one else
* wrote a real delete on close. */
DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
"- deleting file.\n", fsp->fsp_name));
- /* Become the user who requested the delete. */
+ /*
+ * Don't try to update the write time when we delete the file
+ */
+ fsp->update_write_time_on_close = false;
- if (!push_sec_ctx()) {
- smb_panic("close_remove_share_mode: file %s. failed to push "
- "sec_ctx.\n");
- }
+ if (!unix_token_equal(lck->delete_token, ¤t_user.ut)) {
+ /* Become the user who requested the delete. */
+
+ DEBUG(5,("close_remove_share_mode: file %s. "
+ "Change user to uid %u\n",
+ fsp->fsp_name,
+ (unsigned int)lck->delete_token->uid));
- set_sec_ctx(lck->delete_token->uid,
- lck->delete_token->gid,
- lck->delete_token->ngroups,
- lck->delete_token->groups,
- NULL);
+ if (!push_sec_ctx()) {
+ smb_panic("close_remove_share_mode: file %s. failed to push "
+ "sec_ctx.\n");
+ }
+
+ set_sec_ctx(lck->delete_token->uid,
+ lck->delete_token->gid,
+ lck->delete_token->ngroups,
+ lck->delete_token->groups,
+ NULL);
+
+ changed_user = true;
+ }
/* We can only delete the file if the name we have is still valid and
hasn't been renamed. */
DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, "
"stat file_id %s\n",
fsp->fsp_name,
- file_id_static_string(&fsp->file_id),
- file_id_static_string2(&id)));
+ file_id_string_tos(&fsp->file_id),
+ file_id_string_tos(&id)));
/*
* Don't save the errno here, we ignore this error
*/
goto done;
}
+ if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
+ && !is_ntfs_stream_name(fsp->fsp_name)) {
+
+ status = delete_all_streams(conn, fsp->fsp_name);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(5, ("delete_all_streams failed: %s\n",
+ nt_errstr(status)));
+ goto done;
+ }
+ }
+
+
if (SMB_VFS_UNLINK(conn,fsp->fsp_name) != 0) {
/*
* This call can potentially fail as another smbd may
done:
- /* unbecome user. */
- pop_sec_ctx();
-
+ if (changed_user) {
+ /* unbecome user. */
+ pop_sec_ctx();
+ }
+
TALLOC_FREE(lck);
return status;
}
+void set_close_write_time(struct files_struct *fsp, struct timespec ts)
+{
+ DEBUG(6,("close_write_time: %s" , time_to_asc(convert_timespec_to_time_t(ts))));
+
+ if (null_timespec(ts)) {
+ return;
+ }
+ /*
+ * if the write time on close is explict set, then don't
+ * need to fix it up to the value in the locking db
+ */
+ fsp->write_time_forced = false;
+
+ fsp->update_write_time_on_close = true;
+ fsp->close_write_time = ts;
+}
+
+static NTSTATUS update_write_time_on_close(struct files_struct *fsp)
+{
+ SMB_STRUCT_STAT sbuf;
+ struct smb_file_time ft;
+ NTSTATUS status;
+ int ret = -1;
+
+ ZERO_STRUCT(sbuf);
+ ZERO_STRUCT(ft);
+
+ if (!fsp->update_write_time_on_close) {
+ return NT_STATUS_OK;
+ }
+
+ if (null_timespec(fsp->close_write_time)) {
+ fsp->close_write_time = timespec_current();
+ }
+
+ /* Ensure we have a valid stat struct for the source. */
+ if (fsp->fh->fd != -1) {
+ ret = SMB_VFS_FSTAT(fsp, &sbuf);
+ } else {
+ if (fsp->posix_open) {
+ ret = SMB_VFS_LSTAT(fsp->conn,fsp->fsp_name,&sbuf);
+ } else {
+ ret = SMB_VFS_STAT(fsp->conn,fsp->fsp_name,&sbuf);
+ }
+ }
+
+ if (ret == -1) {
+ return map_nt_error_from_unix(errno);
+ }
+
+ if (!VALID_STAT(sbuf)) {
+ /* if it doesn't seem to be a real file */
+ return NT_STATUS_OK;
+ }
+
+ ft.mtime = fsp->close_write_time;
+ status = smb_set_file_time(fsp->conn, fsp, fsp->fsp_name,
+ &sbuf, &ft, true);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ return NT_STATUS_OK;
+}
+
/****************************************************************************
Close a file.
delete on close is done on normal and shutdown close.
****************************************************************************/
-static NTSTATUS close_normal_file(files_struct *fsp, enum file_close_type close_type)
+static NTSTATUS close_normal_file(struct smb_request *req, files_struct *fsp,
+ enum file_close_type close_type)
{
NTSTATUS status = NT_STATUS_OK;
NTSTATUS saved_status1 = NT_STATUS_OK;
NTSTATUS saved_status2 = NT_STATUS_OK;
+ NTSTATUS saved_status3 = NT_STATUS_OK;
+ NTSTATUS saved_status4 = NT_STATUS_OK;
connection_struct *conn = fsp->conn;
- cancel_aio_by_fsp(fsp);
+ if (fsp->aio_write_behind) {
+ /*
+ * If we're finishing write behind on a close we can get a write
+ * error here, we must remember this.
+ */
+ int ret = wait_for_aio_completion(fsp);
+ if (ret) {
+ saved_status1 = map_nt_error_from_unix(ret);
+ }
+ } else {
+ cancel_aio_by_fsp(fsp);
+ }
/*
* If we're flushing on a close we can get a write
* error here, we must remember this.
*/
- saved_status1 = close_filestruct(fsp);
+ saved_status2 = close_filestruct(fsp);
if (fsp->print_file) {
print_fsp_end(fsp, close_type);
- file_free(fsp);
+ file_free(req, fsp);
return NT_STATUS_OK;
}
+ /* Remove the oplock before potentially deleting the file. */
+ if(fsp->oplock_type) {
+ release_file_oplock(fsp);
+ }
+
/* If this is an old DOS or FCB open and we have multiple opens on
the same handle we only have one share mode. Ensure we only remove
the share mode on the last close. */
if (fsp->fh->ref_count == 1) {
/* Should we return on error here... ? */
- saved_status2 = close_remove_share_mode(fsp, close_type);
- }
-
- if(fsp->oplock_type) {
- release_file_oplock(fsp);
+ saved_status3 = close_remove_share_mode(fsp, close_type);
}
locking_close_file(smbd_messaging_context(), fsp);
- status = fd_close(conn, fsp);
+ status = fd_close(fsp);
/* check for magic scripts */
if (close_type == NORMAL_CLOSE) {
- check_magic(fsp,conn);
+ check_magic(fsp);
}
/*
* Ensure pending modtime is set after close.
*/
- if (fsp->pending_modtime_owner && !null_timespec(fsp->pending_modtime)) {
- set_filetime(conn, fsp->fsp_name, fsp->pending_modtime);
- } else if (!null_timespec(fsp->last_write_time)) {
- set_filetime(conn, fsp->fsp_name, fsp->last_write_time);
+ saved_status4 = update_write_time_on_close(fsp);
+ if (NT_STATUS_EQUAL(saved_status4, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
+ /* Someone renamed the file or a parent directory containing
+ * this file. We can't do anything about this, we don't have
+ * an "update timestamp by fd" call in POSIX. Eat the error. */
+
+ saved_status4 = NT_STATUS_OK;
}
if (NT_STATUS_IS_OK(status)) {
status = saved_status1;
} else if (!NT_STATUS_IS_OK(saved_status2)) {
status = saved_status2;
+ } else if (!NT_STATUS_IS_OK(saved_status3)) {
+ status = saved_status3;
+ } else if (!NT_STATUS_IS_OK(saved_status4)) {
+ status = saved_status4;
}
}
DEBUG(2,("%s closed file %s (numopen=%d) %s\n",
- conn->user,fsp->fsp_name,
- conn->num_files_open,
+ conn->server_info->unix_name,fsp->fsp_name,
+ conn->num_files_open - 1,
nt_errstr(status) ));
- file_free(fsp);
+ file_free(req, fsp);
return status;
}
Close a directory opened by an NT SMB call.
****************************************************************************/
-static NTSTATUS close_directory(files_struct *fsp, enum file_close_type close_type)
+static NTSTATUS close_directory(struct smb_request *req, files_struct *fsp,
+ enum file_close_type close_type)
{
struct share_mode_lock *lck = 0;
- BOOL delete_dir = False;
+ bool delete_dir = False;
NTSTATUS status = NT_STATUS_OK;
/*
* reference to a directory also.
*/
- lck = get_share_mode_lock(NULL, fsp->file_id, NULL, NULL);
+ lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
+ NULL);
if (lck == NULL) {
DEBUG(0, ("close_directory: Could not get share mode lock for %s\n", fsp->fsp_name));
}
if (fsp->initial_delete_on_close) {
- BOOL became_user = False;
+ bool became_user = False;
/* Initial delete on close was set - for
* directories we don't care if anyone else
TALLOC_FREE(lck);
- status = rmdir_internals(fsp->conn, fsp->fsp_name);
+ status = rmdir_internals(talloc_tos(),
+ fsp->conn, fsp->fsp_name);
DEBUG(5,("close_directory: %s. Delete on close was set - "
"deleting directory returned %s.\n",
fsp, NT_STATUS_OK);
}
+ status = fd_close(fsp);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Could not close dir! fname=%s, fd=%d, err=%d=%s\n",
+ fsp->fsp_name, fsp->fh->fd, errno, strerror(errno)));
+ }
+
/*
* Do the code common to files and directories.
*/
close_filestruct(fsp);
- file_free(fsp);
+ file_free(req, fsp);
return status;
}
/****************************************************************************
- Close a 'stat file' opened internally.
+ Close a files_struct.
****************************************************************************/
-NTSTATUS close_stat(files_struct *fsp)
+NTSTATUS close_file(struct smb_request *req, files_struct *fsp,
+ enum file_close_type close_type)
{
- /*
- * Do the code common to files and directories.
- */
- close_filestruct(fsp);
- file_free(fsp);
- return NT_STATUS_OK;
+ NTSTATUS status;
+ struct files_struct *base_fsp = fsp->base_fsp;
+
+ if(fsp->is_directory) {
+ status = close_directory(req, fsp, close_type);
+ } else if (fsp->fake_file_handle != NULL) {
+ status = close_fake_file(req, fsp);
+ } else {
+ status = close_normal_file(req, fsp, close_type);
+ }
+
+ if ((base_fsp != NULL) && (close_type != SHUTDOWN_CLOSE)) {
+
+ /*
+ * fsp was a stream, the base fsp can't be a stream as well
+ *
+ * For SHUTDOWN_CLOSE this is not possible here, because
+ * SHUTDOWN_CLOSE only happens from files.c which walks the
+ * complete list of files. If we mess with more than one fsp
+ * those loops will become confused.
+ */
+
+ SMB_ASSERT(base_fsp->base_fsp == NULL);
+ close_file(req, base_fsp, close_type);
+ }
+
+ return status;
}
/****************************************************************************
- Close a files_struct.
+ Deal with an (authorized) message to close a file given the share mode
+ entry.
****************************************************************************/
-
-NTSTATUS close_file(files_struct *fsp, enum file_close_type close_type)
+
+void msg_close_file(struct messaging_context *msg_ctx,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id,
+ DATA_BLOB *data)
{
- if(fsp->is_directory) {
- return close_directory(fsp, close_type);
- } else if (fsp->is_stat) {
- return close_stat(fsp);
- } else if (fsp->fake_file_handle != NULL) {
- return close_fake_file(fsp);
+ files_struct *fsp = NULL;
+ struct share_mode_entry e;
+
+ message_to_share_mode_entry(&e, (char *)data->data);
+
+ if(DEBUGLVL(10)) {
+ char *sm_str = share_mode_str(NULL, 0, &e);
+ if (!sm_str) {
+ smb_panic("talloc failed");
+ }
+ DEBUG(10,("msg_close_file: got request to close share mode "
+ "entry %s\n", sm_str));
+ TALLOC_FREE(sm_str);
+ }
+
+ fsp = file_find_dif(e.id, e.share_file_id);
+ if (!fsp) {
+ DEBUG(10,("msg_close_file: failed to find file.\n"));
+ return;
}
- return close_normal_file(fsp, close_type);
+ close_file(NULL, fsp, NORMAL_CLOSE);
}
git.samba.org / jra / samba / .git / blobdiff