JPS6373345A - File transfer system - Google Patents

Abstract

PURPOSE:To transfer information without regard to a file attribute by updating a file storage area administration part in order that the information written till receiving a completion signal is made to become a part of a file data part. CONSTITUTION:A host computer A10 sequentially reads the information according to storage positions from its external storage device A20, that is, from the file data part 21b which is shown by the file storage area administration part 21a, with considering only storage positions without regard to the attribute so as to transfer and also transfers the completion signal at the time of completing the read. A host computer B30 on a reception side sequentially receives the transferred information to write in its external storage device B40 and also up dales the file storage area administration part 41a in order that the information written till receiving the completion signal is made to be a part of the file data part 41b.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a file transfer method for transferring files stored in an external storage device between two host convenience stores managed by the same operating system. Regarding.

〔overview〕

The present invention provides a file transfer method for transferring files stored in an external storage device between two host computers managed by the same operating system, in which the sending host computer manages the file storage area in the external storage device. The information in the data file section indicated by the section is sequentially read and transferred in the order of storage location, and when the reading is completed, an end signal is transferred, and the host computer on the receiving side sequentially receives the transferred information and transfers it to the outside. By storing the information in the storage device and updating the file storage area management section so that the information written up to the reception of the end signal becomes part of the file data. This allows files with attributes to be transferred.

[Conventional technology]

Conventionally, this type of file transfer method was performed as follows. A file attribute to a file is read on host computer A, and the content of the data is read according to the file attribute. The read data is sent to the host computer B along with the file attributes, and the host computer B determines the file attributes of the file B according to the received file attributes, and writes the data to the external storage device B according to the file attributes.

[Problem that the invention seeks to solve]

In the conventional file transfer method described above, data read processing and data write processing must be performed according to the file attributes of the file to be transferred. Therefore, in order to have a means to transfer files with all attributes, the file transfer system must be able to read and write files with all attributes, which makes the process complicated. There are drawbacks.

An object of the present invention is to provide a file transfer method that can transfer files of all attributes regardless of their attributes by eliminating the above-mentioned drawbacks.

[Means for Solving the Problems] The present invention provides two hosts connected to the same communication line that are equipped with an external storage device for storing files, which is composed of a file data section and a file storage area management section that manages the storage location of the file data section. In the file transfer method between computers, the host computer on the sending side sequentially reads and transfers the information of the data file section indicated by the file storage area management section from its external storage device in the order of its storage location, and when the reading is completed, The end signal is transferred, and the host computer on the receiving side sequentially receives the information transferred from the host computer on the sending side and stores it in its external storage device. The method is characterized in that the file storage area management section is updated so that the information becomes part of the file data section.

[Effect]

The host computer on the sending side reads data from its external storage device, from the file data section indicated by the file storage area management section.
Regardless of the attribute, information is read and transferred in order according to the storage location, paying attention only to the storage location, and when reading is completed, an end signal (EOF (End of
File)).

Then, the host computer on the receiving side sequentially receives this transferred information and writes it to the external storage device.
The file storage area management section is updated so that the information written up to the reception of the end signal becomes part of the file data section.

Therefore, files with arbitrary attributes can be transferred without being aware of their attributes.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. This embodiment is configured by connecting a host computer AIO having an external storage device A20 and a host computer B30 having an external storage device B40 through a communication line 50. The host computer AIO includes an input means 11 for reading the contents of the file A21 from the external storage device A20, and a transmission means 12 for transmitting the information read by the input means 11 to the host computer B30. The host computer B30 also includes a receiving unit 31 that receives information from the transmitting unit 12 of the host computer AIO, and an output unit 32 that writes the information received by the receiving unit 31 to the external storage device B40 as the contents of the file B41. It will be done.

The input means 11 includes, as shown in FIG.
and EOF (End o
f File) includes a notification section lid, the transmitting means 12 includes a transmitting section 12a, and the receiving means 31 as shown in FIG.
As shown in FIG. 4, the output means 32 includes a receiving section 31a, and as shown in FIG. 5, the output means 32 includes a notification determining section 32a, a writing section 32b, and a completion processing section 32c.

Furthermore, the file A21 is stored in the file storage area management section 21a.
and file data part 21b, file B41
includes a file storage area management section 41a and a file data section 41b.

A feature of the present invention is that, in FIG. 1, input means 11, transmission means 12, reception means 31, and output means 32 are provided.

Next, the operation of this embodiment will be explained.

In FIG. 2, the input means 11 uses the reading unit 11a to sequentially read the information of the file data section 21b of the external storage device A20 shown in the order of storage location, regardless of the file attributes of the file storage area management section 21a of the file A21,
The data is sent to the reading processing determination unit 11b. Reading process determination unit 11b
determines the processing result of the reading unit 11a, and if the reading process is successful, the information communication unit 11c determines the processing result of the reading unit 11a.
The information read in is notified to the transmitting means 12. When the reading process ends because there is no remaining area of the file A21 in the external storage device A20, the EOF notification unit lid sends an end signal EOF to the transmitting means 12.

In FIG. 3, the transmitting means 12 transmits the information of the file A21 transferred by the input means 11 by the transmitting section 12a or the end signal EOF to the receiving means 30 via the communication line 50.

In FIG. 4, the receiving means 31 notifies the outputting means 32 of the information of the file A21 or the end signal EOF received from the transmitting means 12 by the receiving section 31a.

In FIG. 5, the output means 32 determines the information notified from the receiving means 31 by the notification determination section 32a.

If the notified information is information about file A21, the writing unit 32b writes this information to external storage device B40, and manages the file storage area so that the written area becomes part of the file data section 41b of file B41. Part 41
Update a. When the receiving means 31 notifies the end signal EOF, the completion processing unit 32c performs a completion process to configure the file B41 from the information written up to this point.

As described above, according to this embodiment, files can be transferred without performing read processing and write processing for files of all attributes as in the prior art.

〔Effect of the invention〕

As explained above, the present invention has the advantage that it is possible to transfer information on an external storage device by the above means without being aware of the file attributes of the file, so that files with arbitrary attributes can be transferred. There is.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a block diagram showing details of the input means of this embodiment. FIG. 3 is a block diagram showing details of the transmitting means of this embodiment. FIG. 4 is a block diagram showing details of the receiving means of this embodiment. FIG. 5 is a block diagram showing details of the output means of this embodiment. 10...Host computer A111...Input means, Ila...Reading unit, llb...Reading process determination unit, llc...Information notification unit, lid...EOF notification unit, 12...Transmission Means, 12a... Transmission section, 20.
・・External storage device A, 21 river file A, 21a,
41a...File storage area management section, 21b, 41b
...File section, 3o...Host computer B,
31... Receiving means, 31a... Receiving unit, 32...
Output means, 32a... Notification determination section, 32b... Writing section, 32c... Completion processing section, 40... External storage device B, 41... File B, 5o... Communication line, E
OF... End signal.

Claims (1)

[Claims] (1) In a file transfer method between two host computers connected to the same communication line and equipped with an external storage device that stores files, consisting of a file data section and a file storage area management section that manages its storage location, The above-mentioned host computer sequentially reads and transfers the information of the data file section indicated by the file storage area management section from the external storage device in the order of its storage location, and when the reading is completed, transfers a completion signal to the above-mentioned host on the receiving side. The computer sequentially receives the information transferred from the sending host computer and stores it in its external storage device, and also makes the information written up to the reception of the end signal part of its file data section. Update the file storage management section as follows. A file transfer method characterized by: