static void oplock_timeout_handler(struct tevent_context *ctx,
struct tevent_timer *te,
struct timeval now,
void *private_data)
{
files_struct *fsp = (files_struct *)private_data;
SMB_ASSERT(fsp->sent_oplock_break != NO_BREAK_SENT);
/* Remove the timed event handler. */
TALLOC_FREE(fsp->oplock_timeout);
DEBUG(0, ("Oplock break failed for file %s -- replying anyway\n",
fsp_str_dbg(fsp)));
remove_oplock(fsp);
}
static NTSTATUS close_normal_file(struct smb_request *req, files_struct *fsp,
enum file_close_type close_type)
{
NTSTATUS status = NT_STATUS_OK;
NTSTATUS tmp;
connection_struct *conn = fsp->conn;
bool is_durable = false;
if (fsp->num_aio_requests != 0) {
if (close_type != SHUTDOWN_CLOSE) {
/*
* reply_close and the smb2 close must have
* taken care of this. No other callers of
* close_file should ever have created async
* I/O.
*
* We need to panic here because if we close()
* the fd while we have outstanding async I/O
* requests, in the worst case we could end up
* writing to the wrong file.
*/
DEBUG(0, ("fsp->num_aio_requests=%u\n",
fsp->num_aio_requests));
smb_panic("can not close with outstanding aio "
"requests");
}
/*
* For shutdown close, just drop the async requests
* including a potential close request pending for
* this fsp. Drop the close request first, the
* destructor for the aio_requests would execute it.
*/
TALLOC_FREE(fsp->deferred_close);
while (fsp->num_aio_requests != 0) {
/*
* The destructor of the req will remove
* itself from the fsp.
* Don't use TALLOC_FREE here, this will overwrite
* what the destructor just wrote into
* aio_requests[0].
*/
talloc_free(fsp->aio_requests[0]);
}
}
/*
* If we're flushing on a close we can get a write
* error here, we must remember this.
*/
tmp = close_filestruct(fsp);
status = ntstatus_keeperror(status, tmp);
if (NT_STATUS_IS_OK(status) && fsp->op != NULL) {
is_durable = fsp->op->global->durable;
}
if (close_type != SHUTDOWN_CLOSE) {
is_durable = false;
}
if (is_durable) {
DATA_BLOB new_cookie = data_blob_null;
tmp = SMB_VFS_DURABLE_DISCONNECT(fsp,
fsp->op->global->backend_cookie,
fsp->op,
&new_cookie);
if (NT_STATUS_IS_OK(tmp)) {
struct timeval tv;
NTTIME now;
if (req != NULL) {
tv = req->request_time;
} else {
tv = timeval_current();
}
now = timeval_to_nttime(&tv);
data_blob_free(&fsp->op->global->backend_cookie);
fsp->op->global->backend_cookie = new_cookie;
fsp->op->compat = NULL;
tmp = smbXsrv_open_close(fsp->op, now);
if (!NT_STATUS_IS_OK(tmp)) {
DEBUG(1, ("Failed to update smbXsrv_open "
"record when disconnecting durable "
"handle for file %s: %s - "
"proceeding with normal close\n",
fsp_str_dbg(fsp), nt_errstr(tmp)));
}
scavenger_schedule_disconnected(fsp);
} else {
DEBUG(1, ("Failed to disconnect durable handle for "
"file %s: %s - proceeding with normal "
"close\n", fsp_str_dbg(fsp), nt_errstr(tmp)));
}
if (!NT_STATUS_IS_OK(tmp)) {
is_durable = false;
}
}
if (is_durable) {
/*
* This is the case where we successfully disconnected
* a durable handle and closed the underlying file.
* In all other cases, we proceed with a genuine close.
*/
DEBUG(10, ("%s disconnected durable handle for file %s\n",
conn->session_info->unix_info->unix_name,
fsp_str_dbg(fsp)));
file_free(req, fsp);
return NT_STATUS_OK;
}
if (fsp->op != NULL) {
/*
* Make sure the handle is not marked as durable anymore
*/
fsp->op->global->durable = false;
}
if (fsp->print_file) {
/* FIXME: return spool errors */
print_spool_end(fsp, close_type);
file_free(req, fsp);
return NT_STATUS_OK;
}
/* Remove the oplock before potentially deleting the file. */
if(fsp->oplock_type) {
remove_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... ? */
tmp = close_remove_share_mode(fsp, close_type);
status = ntstatus_keeperror(status, tmp);
}
locking_close_file(conn->sconn->msg_ctx, fsp, close_type);
tmp = fd_close(fsp);
status = ntstatus_keeperror(status, tmp);
/* check for magic scripts */
if (close_type == NORMAL_CLOSE) {
tmp = check_magic(fsp);
status = ntstatus_keeperror(status, tmp);
}
/*
* Ensure pending modtime is set after close.
*/
tmp = update_write_time_on_close(fsp);
if (NT_STATUS_EQUAL(tmp, 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. */
tmp = NT_STATUS_OK;
}
status = ntstatus_keeperror(status, tmp);
DEBUG(2,("%s closed file %s (numopen=%d) %s\n",
conn->session_info->unix_info->unix_name, fsp_str_dbg(fsp),
conn->num_files_open - 1,
nt_errstr(status) ));
file_free(req, fsp);
return status;
}
static void process_oplock_break_message(struct messaging_context *msg_ctx,
void *private_data,
uint32_t msg_type,
struct server_id src,
DATA_BLOB *data)
{
struct share_mode_entry msg;
files_struct *fsp;
bool break_to_level2 = False;
bool use_kernel;
struct smbd_server_connection *sconn =
talloc_get_type_abort(private_data,
struct smbd_server_connection);
struct server_id self = messaging_server_id(sconn->msg_ctx);
struct kernel_oplocks *koplocks = sconn->oplocks.kernel_ops;
uint16_t break_to;
if (data->data == NULL) {
DEBUG(0, ("Got NULL buffer\n"));
return;
}
if (data->length != MSG_SMB_SHARE_MODE_ENTRY_SIZE) {
DEBUG(0, ("Got invalid msg len %d\n", (int)data->length));
return;
}
/* De-linearize incoming message. */
message_to_share_mode_entry(&msg, (char *)data->data);
break_to = msg.op_type;
DEBUG(10, ("Got oplock break to %u message from pid %s: %s/%llu\n",
(unsigned)break_to, server_id_str(talloc_tos(), &src),
file_id_string_tos(&msg.id),
(unsigned long long)msg.share_file_id));
fsp = initial_break_processing(sconn, msg.id, msg.share_file_id);
if (fsp == NULL) {
/* We hit a race here. Break messages are sent, and before we
* get to process this message, we have closed the file. */
DEBUG(3, ("Did not find fsp\n"));
return;
}
if (fsp->sent_oplock_break != NO_BREAK_SENT) {
/*
* Nothing to do anymore
*/
return;
}
if (break_to == fsp->oplock_type) {
DEBUG(3, ("Already downgraded oplock on %s: %s\n",
file_id_string_tos(&fsp->file_id),
fsp_str_dbg(fsp)));
return;
}
use_kernel = lp_kernel_oplocks(SNUM(fsp->conn)) && koplocks;
if ((global_client_caps & CAP_LEVEL_II_OPLOCKS) &&
(break_to != NO_OPLOCK) &&
!(use_kernel && !(koplocks->flags & KOPLOCKS_LEVEL2_SUPPORTED)) &&
lp_level2_oplocks(SNUM(fsp->conn))) {
break_to_level2 = True;
}
/* Need to wait before sending a break
message if we sent ourselves this message. */
if (serverid_equal(&self, &src)) {
wait_before_sending_break();
}
if (sconn->using_smb2) {
send_break_message_smb2(fsp, break_to_level2 ?
OPLOCKLEVEL_II : OPLOCKLEVEL_NONE);
} else {
send_break_message_smb1(fsp, break_to_level2 ?
OPLOCKLEVEL_II : OPLOCKLEVEL_NONE);
}
if ((fsp->oplock_type == LEVEL_II_OPLOCK) && (break_to == NO_OPLOCK)) {
/*
* This is an async break without a reply and thus no timeout
*/
remove_oplock(fsp);
return;
}
fsp->sent_oplock_break = break_to_level2 ? LEVEL_II_BREAK_SENT:BREAK_TO_NONE_SENT;
add_oplock_timeout_handler(fsp);
}
