KR20170024392A - Apparatus and method for connecting server according to file system event - Google Patents

Abstract

The present invention relates to an apparatus and method for connecting to an external server according to a file system event. A method of controlling a communication apparatus having a file system according to the present invention includes a step of receiving a file access request signal according to a first protocol from a file system; a step of generating a file access request signal corresponding to a file access request signal according to the first protocol and according to a second protocol differentiated from the first protocol; and a step of transmitting a file access request signal according to the second protocol generated in the step to the external server. So, files stored in a cloud server can be read or written like files stored in the hard disk of a communication terminal without correcting and modifying a user level program.

Description

[0001] APPARATUS AND METHOD FOR CONNECTING SERVER ACCORDING TO FILE SYSTEM EVENT [0002]

The present invention relates to an apparatus and method for connecting to an external server to read or write a file, and more particularly, to an apparatus and method for allowing an application to read a file stored in an external server through a file system or to store a file in an external server Apparatus and method.

There are many network file sharing protocols that are used on a network (e.g., the same network).

SMB (Server Message Block) is a file / printer sharing protocol used in Windows environments such as Microsoft's Windows 95 or Windows NT. By using this, a TCP You can use / IP or Net BIOS extended user interface (NetBEUI) as a network adapter.

However, when connecting to a server on the network using the conventional network file sharing protocol, it is not possible to make the area of the server on the network not be distinguished for each user, and there is a problem that only the uploading and downloading of the file is performed one by one.

In particular, in order to perform a function of uploading a file or downloading a file to a cloud server which has been used in various fields in each application of the terminal, it has been troublesome to change the function to be included in each application.

Published Patent No. 10-2012-0140372

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and it is an object of the present invention to provide a method and apparatus for enabling a file stored in an external cloud server to be used as a file or a folder of a storage device directly connected to a communication terminal And to provide a method of manufacturing the same.

According to an aspect of the present invention, there is provided a communication apparatus including a file system, the apparatus including: a first communication unit receiving a file access request signal according to a first protocol from the file system; A file system protocol converter for generating a file access request signal corresponding to a file access request signal according to the first protocol and according to a second protocol differentiated from the first protocol; And a second communication unit for transmitting a file access request signal according to the second protocol generated by the file system protocol conversion unit to the external server.

In order to achieve the above object, a communication apparatus according to the present invention includes: a system call interface for receiving a system call request of an application; A file system for performing file processing according to a request from the application through the system call interface; When a file access request signal according to a first protocol corresponding to one of NFS (Network File System) protocol, SMB (Server Message Block) protocol and CIFS (Common Internet File System) protocol is received from the file system, And a protocol conversion server for generating a file access request signal compliant with HTTP (HyperText Transfer Protocol) according to a file access request signal according to the protocol and transmitting a file access request signal conforming to the generated HTTP to an external server, do.

According to another aspect of the present invention, there is provided a method of controlling a communication apparatus having a file system according to the present invention, the method comprising: receiving a file access request signal according to a first protocol from the file system; Generating a file access request signal corresponding to a file access request signal according to the first protocol and according to a second protocol differentiated from the first protocol; And transmitting a file access request signal according to the second protocol generated in the step to the external server.

As described above, according to the present invention, by changing the protocol at the file system level, the file stored in the cloud server can be accessed (read, write Etc.).

In particular, each communication terminal user accesses a folder displayed on the communication terminal and can upload or download a file to a specific space of a cloud server operated as a member.

At this time, when the file size is equal to or larger than the predetermined size, the user can request the file by the multi-download method, thereby enabling quick downloading.

1 is a schematic configuration diagram of an entire communication system including a communication device according to an embodiment of the present invention,
Fig. 2 is a functional block diagram of the communication device of Fig. 1,
3 is a detailed block diagram of the protocol conversion unit of FIG. 2,
FIG. 4 is a control flowchart of an overall communication system including a communication device according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, embodiments of the present invention will be described in order to facilitate understanding of the present invention, and the present invention is not limited to these embodiments. In particular, the present invention can be configured by combining at least any one of individual components, individual functions, or individual steps included in each embodiment.

Hereinafter, each signal referred to in the embodiments of the present invention may refer to one signal transmitted by one connection or the like, but may also mean a series of signals transmitted for the purpose of performing a specific function . That is, in each embodiment, a plurality of signals transmitted after a predetermined time interval or after receiving a response signal from the counterpart device can be represented by a single signal name for convenience.

A schematic configuration of an overall communication system including a communication apparatus according to an embodiment of the present invention is as shown in FIG.

In this figure, the external server 200 may be provided by, for example, a communication company or correspond to the cloud server 200 connected to the Internet. In the present embodiment, it is assumed that the communication terminal 100 is provided in a communication network capable of connecting via wireless communication, that is, via the base station 201. [

The cloud server 200 performs a function of transmitting a pre-stored file or storing a file received from the communication terminal 100 according to a request of the communication terminal 100. When the request is received from the communication terminal 100 And provides a file list. In the present embodiment, 'file' is used to mean 'folder' or 'directory' which is a bundle of files.

The cloud server 200 may be operated by a non-member system accessible to all, or may be operated by a member system that enables only a user who has previously registered.

The cloud server 200 can perform the authentication process using the authentication information received from the communication terminal 100 and transmit the result to the communication terminal 100. [

Here, the authentication information may correspond to terminal information (for example, a MAC address) stored in the communication terminal 100, or an ID and a password input by the user to the communication terminal 100.

In this case, the cloud server 200 can allocate storage space for each member, and prevent unauthorized others from unauthorizedly browsing the storage space of another user.

For example, when the storage hard disk provided in the cloud server 200 has a storage capacity of 1 terabyte, a storage space of 10 gigabytes may be allocated to 100 users.

In this case, when each user accesses using the communication terminal 100, the cloud server 200 provides a list of files stored in the respective storage spaces, transmits at least a part of the requested file from the communication terminal 100 , The file received from the communication terminal 100 can be stored in the corresponding storage space or the previously stored file can be updated.

The communication terminal 100 communicates with the cloud server 200 to transmit or receive a predetermined file. The communication terminal 100 may correspond to a wireless terminal such as a smart phone or a mobile phone, or may be a personal computer And may correspond to a wired terminal.

However, in the present embodiment, the communication terminal 100 is a mobile communication terminal such as a smart phone.

An example of the function block of the communication terminal 100 is as shown in FIG.

The communication terminal 100 may include at least one user level program 110, a system call interface 120, a file system 130, and a protocol conversion server 140, as shown in FIG.

The user level program 110 refers to an application that provides a predetermined user interface to a user so that the user can operate the user interface.

The user level program 110 may use the file system 130 to read a file stored in a storage unit (not shown) of the communication terminal 100 or to write a file to the storage unit 1422, May be included in the operating system or kernel of the communication terminal 100 although not shown.

In this case, the communication terminal 100 can use the file system 130 in a manner of calling a system call, and the system call interface 120 performs such a bridge function.

That is, each application calls a system call when reading or writing a file, in which case the necessary commands are transferred to the file system 130 via the system call interface 120.

The file system 130 refers to a system for storing or organizing files or data in a device such as a computer so that they can be easily found and accessed. In general, a physical data storage device such as a hard disk or a CD- However, the method of providing access to the data on the file server through the client performing the network protocol (NFS, SMB, 9P, etc.) and the method in which only the accessing means is present as a virtual type, May be included in the range of system 130.

Also, a module or a constituent unit for accessing the file system 130 may be referred to as a file system 130, which will be used in this embodiment.

The file system 130 may be configured to include the virtual file system 131 and the network file sharing system device driver 132.

The virtual file system 131 is an abstraction layer on the actual file system 130 so that the user level program 110 can access the various file systems 130 in the same way.

For example, using the virtual file system 131, the user-level program 110 can directly access the storage device on the network as well as the local storage device, so that the user can not feel the difference between the local and the network.

In addition, the virtual file system 131 can prevent a user or the virtual file system 131 from experiencing a difference between the file systems 130 over differences between Microsoft Windows, MacOS, and Unix operating systems.

The interfaces and specifications of the kernel and the actual file system 130 are defined on the basis of the configuration of the virtual file system 131 and the new file system 130 can be simply added to the kernel according to the standard.

The network file sharing system device driver 132 is a device driver that associates the virtual file system 131 with the virtual file system 131 so that the virtual file system 131 can use the network file sharing system. Level program 110 can use the files in the shared folder of the computer on the network.

The network file sharing system device driver 132 may be, for example, a Network File System (NFS) device driver, a Server Message Block (SMB) device driver, or a CIFS (Common Internet File System) device driver.

NFS is a protocol developed by Sun Microsystems in 1984 that helps users of client computers access files on a network in a similar way to accessing directly connected storage. Like many other protocols, NFC is also based on the RPC system.

SMB was developed by Microsoft Corporation and Intel Corporation to allow Windows systems to share resources such as disks and printers on other systems. It is used for services such as file sharing between computers using OS / 2, NT, and WIN9x. Protocol.

CIFS is an extension of the SMB file-sharing protocol for the Internet. It provides scalability with DNS (Domain Name Service) over SMB protocol, optimization for slow dial-up networking, support for Unicode-compliant file names, It is a protocol that supports at the same time.

In this embodiment, the network file sharing system device driver 132 is a CIFS device driver.

In this embodiment, the CIFS device driver communicates with the protocol conversion server 140 instead of accessing a computer on the network for file access.

For example, when the user level program 110 requests access to a file in the network file sharing system via a system call, the CIFS device driver transmits the file access request to the protocol conversion server 140.

For example, when the port on which the protocol conversion server 140 is listening is 7880, the CIFS device driver sends a file access request signal to the protocol conversion server 140 using the IP address and the port number 7880 of the communication terminal 100 .

It is to be appreciated that the user level program 110 may access the file system 130 using a system call and that the file system 130 may access the various file systems 130 upon request of the user level program 110 And the detailed description will be omitted.

Meanwhile, the protocol conversion server 140 may include a first communication unit 141, a second communication unit 143, and a protocol conversion unit as shown in FIG.

The first communication unit 141 receives a file access request signal according to the first protocol from the file system 130.

Here, the file access request signal may be a signal requesting a file list (including a directory), a file read request signal, or a file write request signal.

The first protocol may correspond to a network file sharing protocol for sharing a file on the network. In particular, the first protocol may correspond to the NFS protocol, the SMB protocol, the CIFS protocol, and the like.

That is, when the network file sharing system device driver 132 of the file system 130 is a CIFS device driver as described above, the first communication unit 141 performs a function of communicating with the CIFS device driver.

At this time, the first communication unit 141 also transmits a file access request signal according to the CIFS protocol received from the CIFS device driver to a protocol converter to be described later.

The file system protocol converting unit 142 functions to generate a file access request signal corresponding to the file access request signal according to the first protocol and according to the second protocol differentiated from the first protocol.

The second protocol corresponds to a protocol for communication with the external server 200 provided on the Internet. For example, if the external server 200 is a web server, the second protocol may correspond to a web access protocol. In this embodiment, the second protocol is an HTTP (HyperText Transfer Protocol) for communicating with a web server.

3, the file system protocol conversion unit 142 may include a determination unit 1421, a generation unit 1423, and a storage unit 1422. [

The storage unit 1422 may store data and information necessary for the function of the file system protocol conversion unit 142 and data or information generated during the function of the file system protocol conversion unit 142.

Particularly, a basic size which is basic data of comparison judgment is registered in the storage unit 1422 as described later.

If the file access request signal according to the first protocol is a file request signal including the file size of the requested file, the determination unit 1421 transmits the file size included in the file request signal to the storage unit 1422 And performs a function of comparing with a predetermined basic size. Here, the file request signal may be a signal requesting the whole of a specific file or a file requesting some of the specific files.

If the file size (the size of the entire file or a part of the file) included in the file request signal is larger than the default size as a result of the determination by the determination unit 1421, the generation unit 1423 generates a file And generates a plurality of file request signals according to the second protocol, each of which includes a partition size.

More specifically, if the file size included in the file request signal is greater than the default size, the generation unit 1423 divides the entire file area corresponding to the file size, And a function of generating a plurality of file request signals according to a second protocol including the divided area information.

For example, when the file size included in the file request signal is 65 MByte and the basic size stored in the storage unit 1422 is 25 MByte, the generation unit 1423 divides the entire file area having the size of 65 MByte, The file request signal according to the three second protocols including the divided area information, that is, the individual file area information, can be generated so that the file area size is 25 Mbytes, 25 Mbytes, and 15 Mbytes, respectively.

An example of calculating the individual file area information included in the file request signal according to each second protocol is expressed as follows.

If the size of the file requested by the user level program 110, that is, the file size is A and the basic size pre-stored in the storage unit 1422 is N, the first individual file area information is 0 to (A / N) -1 The second individual file area information corresponds to (A / N) to 2 (A / N) -1, the Nth individual file area information corresponds to (N-1) A / N).

Meanwhile, the second communication unit 143 transmits a file access request signal according to the second protocol generated by the file system protocol conversion unit 142 to the external server 200.

In the case where the external server 200 is a web server using HTTP, the second communication unit 143 for transmitting a file access request signal according to the second protocol may correspond to an HTTP client in the view of the external server 200 .

When the file system protocol conversion unit 142 generates a plurality of file request signals including the individual file area information as described above, the second communication unit 143 transmits a plurality of file request signals Can be collectively transmitted to the external server (200).

That is, the second communication unit 143 transmits a second file request signal to the external server 200 even before a response to the first file request signal is received after the first file request signal is transmitted to the external server 200, To the external server 200, and further to the Nth file request signal.

Also, the second communication unit 143 transmits the login information input by the user to the external server 200 to request authentication, and after the authentication approval response is received from the external server 200 in response to the authentication request, And transmits the access request signal to the external server 200. [

At this time, the second communication unit 143 may include the session information included in the authentication approval response of the external server 200 in the communication signal every time the external server 200 communicates with the external server 200, thereby informing the user that the user is the authorized user.

The second communication unit 143 may communicate with the external server 200 through a NIC (Network Interface Card) provided in the communication terminal 100 and a driver for driving the NIC (not shown) And therefore, a detailed description thereof will be omitted.

Hereinafter, with reference to FIG. 4, the signal flow and control procedure of the entire communication system including the communication terminal 100 according to an embodiment of the present invention will be described.

The CIFS device driver 132 included in the file system 130 of the communication terminal 100 is operated in the communication terminal 100. In this case, An example of receiving a file request from a user level program is described below.

When the CIFS device driver 132 detects a file request by the user level program 110, the CIFS device driver 132 generates a file request signal according to the CIFS protocol and transmits the file request signal to the CIFS server 140 running in the communication terminal 100. The file request signal transmitted by the CIFS device driver 132 includes a file size A indicating the total size of a requested file. Communication between the CIFS device driver and the CIFS server 140 is based on the CIFS protocol.

In this embodiment, the CIFS server 140 corresponds to the protocol conversion server 140 described above.

The CIFS server 140 stores a basic size K as a basis for the comparison determination. When the file size A included in the file request signal is larger than the basic size K, the CIFS server 140 performs file area division processing .

Thereafter, the CIFS generates a plurality of HTTP signals including the divided individual file regions, and requests the cloud server 200 for a multi-download.

In this case, a request for a multi-download is performed by collectively transmitting a plurality of HTTP signals including each divided individual file area and requesting corresponding file fragments.

When individual pieces of the file are downloaded from the cloud server 200, the CIFS server 140 merge the downloaded pieces into one file.

The CIFS server 140 then sends the merged file to the CIFS device driver 132, at which time communication with the CIFS device driver is in accordance with the CIFS protocol.

The CIFS device driver 132 transfers the file received from the CIFS server 140 to the requested program.

Accordingly, the user level program 110 can access (read, write, etc.) the file stored in the cloud server 200 like a file stored in the hard disk (not shown) of the communication terminal 100.

The user level program 110 is stored in the cloud server 200 through the communication between the CIFS device driver 132 and the CIFS server 140 operating in cooperation with the virtual file system 131, It is possible to use the file included in the cloud server 200 as a file stored in the communication terminal 100 itself without modifying the user level program 110 at all.

Also, when the cloud server 200 is a web server operated by a member, the CIFS server 140 can access the cloud server 200 only in the region separated by the member by communicating with the cloud server 200 according to the HTTP protocol .

In this case, the users of the various communication terminals 100 may use their own communication terminal 100 using the files stored in the area assigned to them after joining the cloud server 200. At this time, The user can not feel the difference between the file stored in the communication terminal 200 and the file stored in the communication terminal 100. [

In addition, when the cloud server 200 sets an allocation area for each user and allows a plurality of members to protect their files from others while using the files, satisfaction of the file service of the user of the communication terminal 100 is also improved.

In the above example, the function of converting the protocol of the file system 130 is operated by a predetermined server provided in the communication terminal 100, but the present invention is not limited thereto.

Meanwhile, it goes without saying that the process of performing each of the above-described embodiments can be performed by a program or an application stored in a predetermined recording medium (for example, a computer-readable). Here, the recording medium includes an electronic recording medium such as a RAM (Random Access Memory), a magnetic recording medium such as a hard disk, and an optical recording medium such as a CD (Compact Disk).

At this time, the program stored in the recording medium may be executed on hardware such as a computer or a smart phone to perform each of the above embodiments. In particular, at least one of the functional blocks of the communication terminal according to the present invention described above can be implemented by such a program or an application.

The present invention is not limited to the above-described specific embodiments, and various modifications and changes may be made without departing from the gist of the present invention. It is to be understood that such variations and modifications are intended to be included in the scope of the appended claims.

100: communication terminal 200: external server
110: user level program 120: system call interface
130: File system 131: Virtual file system
132: Network File Sharing System Device Drivers
140: protocol conversion server 141: first communication unit
142: File system protocol conversion section
143: second communication unit 1421:
1422: storage unit 1423:

Claims (15)

A control method of a communication apparatus provided with a file system,
(a) receiving a file access request signal according to a first protocol from the file system;
(b) generating a file access request signal corresponding to a file access request signal according to the first protocol and according to a second protocol differentiated from the first protocol;
(c) transmitting a file access request signal according to the second protocol generated in the step (b) to the external server. The method according to claim 1,
The file system is accessed by a user level application using a system call,
Wherein the file access request signal is received from the network file sharing system device driver included in the file system in step (a). 3. The method of claim 2,
Wherein the first protocol is a network file sharing protocol for sharing a file on a network,
Wherein the second protocol is a web access protocol for communicating with a web server. The method according to claim 1,
The step (b)
(b1) comparing a file size included in the file request signal with a predetermined basic size when the file access request signal according to the first protocol is a file request signal including a file size for a predetermined file;
(b2) if it is determined in step (b1) that the file size included in the file request signal is larger than the basic size, dividing the entire file area corresponding to the file size, And generating a plurality of file request signals according to the second protocol including the individual file area information. 5. The method of claim 4,
Wherein, in the step (c), a plurality of file access request signals according to the second protocol are collectively transmitted to the external server. The method according to claim 1,
(d) requesting authentication by transmitting the login information input by the user to the external server,
Wherein the step (c) is performed after an authentication acknowledgment is received from the external server according to the authentication request in the step (d). A computer-readable recording medium storing a program for executing the method according to any one of claims 1 to 6. 6. An application stored on a medium for executing the method of any one of claims 1 to 6 in combination with hardware. A communication apparatus equipped with a file system,
A first communication unit receiving a file access request signal according to a first protocol from the file system;
A file system protocol converter for generating a file access request signal corresponding to a file access request signal according to the first protocol and according to a second protocol differentiated from the first protocol;
And a second communication unit for transmitting a file access request signal according to a second protocol generated by the file system protocol converter to the external server. 10. The method of claim 9,
The file system is accessed by a user level application using a system call,
Wherein the first communication unit receives the file access request signal from the network file sharing system device driver included in the file system. 11. The method of claim 10,
Wherein the first protocol is a network file sharing protocol for sharing a file on a network,
Wherein the second protocol is a web access protocol for communicating with a web server. 10. The method of claim 9,
Wherein the file system protocol conversion unit comprises:
A determination unit for comparing a file size included in the file request signal with a predetermined basic size when the file access request signal according to the first protocol is a file request signal including a file size for a predetermined file;
If the file size included in the file request signal is larger than the basic size, the entire file area corresponding to the file size is divided so that the size of each individual file area is equal to or smaller than the basic size, And generating a plurality of file request signals according to the second protocol including the individual file area information. 13. The method of claim 12,
Wherein the second communication unit collectively transmits a plurality of file request signals according to the second protocol to the external server. 10. The method of claim 9,
Wherein the second communication unit transmits the file access request signal to the external server after requesting authentication by transmitting the login information inputted by the user to the external server and receiving an authentication approval response from the external server according to the authentication request, To the communication device. A communication device comprising:
A system call interface for receiving an application system call request;
A file system for performing file processing according to a request from the application through the system call interface;
When a file access request signal according to a first protocol corresponding to one of NFS (Network File System) protocol, SMB (Server Message Block) protocol and CIFS (Common Internet File System) protocol is received from the file system, 1 protocol and generates a file access request signal conforming to HTTP (HyperText Transfer Protocol), and transmits a file access request signal conforming to the generated HTTP to an external server Characterized in that the communication device

Images