예제 #1
0
static void
smb_put_super(struct super_block *sb)
{
	struct smb_sb_info *server = SMB_SB(sb);

	lock_kernel();

	smb_lock_server(server);
	server->state = CONN_INVALID;
	smbiod_unregister_server(server);

	smb_close_socket(server);

	if (server->conn_pid)
		kill_pid(server->conn_pid, SIGTERM, 1);

	bdi_destroy(&server->bdi);
	kfree(server->ops);
	smb_unload_nls(server);
	sb->s_fs_info = NULL;
	smb_unlock_server(server);
	put_pid(server->conn_pid);
	kfree(server);

	unlock_kernel();
}
예제 #2
0
파일: file.c 프로젝트: JBTech/ralink_rt5350
static int
smb_fsync(struct file *file, struct dentry * dentry, int datasync)
{
	struct smb_sb_info *server = server_from_dentry(dentry);
	int result;

	VERBOSE("sync file %s/%s\n", DENTRY_PATH(dentry));

	/*
	 * The VFS will writepage() all dirty pages for us, but we
	 * should send a SMBflush to the server, letting it know that
	 * we want things synchronized with actual storage.
	 *
	 * Note: this function requires all pages to have been written already
	 *       (should be ok with writepage_sync)
	 */
	smb_lock_server(server);
	result = smb_proc_flush(server, dentry->d_inode->u.smbfs_i.fileid);
	smb_unlock_server(server);
	return result;
}
예제 #3
0
/*
 * Add a request and tell smbiod to process it
 */
int smb_add_request(struct smb_request *req)
{
	long timeleft;
	struct smb_sb_info *server = req->rq_server;
	int result = 0;

	smb_setup_request(req);
	if (req->rq_trans2_command) {
		if (req->rq_buffer == NULL) {
			PARANOIA("trans2 attempted without response buffer!\n");
			return -EIO;
		}
		result = smb_setup_trans2request(req);
	}
	if (result < 0)
		return result;

#ifdef SMB_DEBUG_PACKET_SIZE
	add_xmit_stats(req);
#endif

	/* add 'req' to the queue of requests */
	if (smb_lock_server_interruptible(server))
		return -EINTR;

	/*
	 * Try to send the request as the process. If that fails we queue the
	 * request and let smbiod send it later.
	 */

	/* FIXME: each server has a number on the maximum number of parallel
	   requests. 10, 50 or so. We should not allow more requests to be
	   active. */
	if (server->mid > 0xf000)
		server->mid = 0;
	req->rq_mid = server->mid++;
	WSET(req->rq_header, smb_mid, req->rq_mid);

	result = 0;
	if (server->state == CONN_VALID) {
		if (list_empty(&server->xmitq))
			result = smb_request_send_req(req);
		if (result < 0) {
			/* Connection lost? */
			server->conn_error = result;
			server->state = CONN_INVALID;
		}
	}
	if (result != 1)
		list_add_tail(&req->rq_queue, &server->xmitq);
	smb_rget(req);

	if (server->state != CONN_VALID)
		smbiod_retry(server);

	smb_unlock_server(server);

	smbiod_wake_up();

	timeleft = wait_event_interruptible_timeout(req->rq_wait,
				    req->rq_flags & SMB_REQ_RECEIVED, 30*HZ);
	if (!timeleft || signal_pending(current)) {
		/*
		 * On timeout or on interrupt we want to try and remove the
		 * request from the recvq/xmitq.
		 * First check if the request is still part of a queue. (May
		 * have been removed by some error condition)
		 */
		smb_lock_server(server);
		if (!list_empty(&req->rq_queue)) {
			list_del_init(&req->rq_queue);
			smb_rput(req);
		}
		smb_unlock_server(server);
	}

	if (!timeleft) {
		PARANOIA("request [%p, mid=%d] timed out!\n",
			 req, req->rq_mid);
		VERBOSE("smb_com:  %02x\n", *(req->rq_header + smb_com));
		VERBOSE("smb_rcls: %02x\n", *(req->rq_header + smb_rcls));
		VERBOSE("smb_flg:  %02x\n", *(req->rq_header + smb_flg));
		VERBOSE("smb_tid:  %04x\n", WVAL(req->rq_header, smb_tid));
		VERBOSE("smb_pid:  %04x\n", WVAL(req->rq_header, smb_pid));
		VERBOSE("smb_uid:  %04x\n", WVAL(req->rq_header, smb_uid));
		VERBOSE("smb_mid:  %04x\n", WVAL(req->rq_header, smb_mid));
		VERBOSE("smb_wct:  %02x\n", *(req->rq_header + smb_wct));

		req->rq_rcls = ERRSRV;
		req->rq_err  = ERRtimeout;

		/* Just in case it was "stuck" */
		smbiod_wake_up();
	}
	VERBOSE("woke up, rcls=%d\n", req->rq_rcls);

	if (req->rq_rcls != 0)
		req->rq_errno = smb_errno(req);
	if (signal_pending(current))
		req->rq_errno = -ERESTARTSYS;
	return req->rq_errno;
}