JPS60251448A - File access control system - Google Patents

Abstract

PURPOSE:To omit a procedure for resetting terminal equipment at the access of file in a different system and to improve its processing efficiency by forming a specific program for transmitting instructions between programs included in a control program system. CONSTITUTION:When the terminal equipment TB generates an access request RDA to a file FA in another system, a program PB generates a command CALL-PE for accessing a program PE and informs the request RDA. The program PE generaters a start command STPA to start a program PA included in a control program AIM1 and informs the request RDA. The program PA generates a reading instruction READ on the basis of said request RDA. A control part 5 transfers data D in a file FA to a working area WA of a storage part 4 and generates and informs an end signal EN to the program PA. The program PA generates an end command END and informs the address M of the working area WA to the program PB. The program PB extracts the data D and transfers it to the terminal equipment TB.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a seven-aisle access control method for exchanging data between a plurality of management programs controlled by the same operating system in an information processing system.

In online systems, there are many cases where a plurality of different management programs are operated under one operating system (hereinafter referred to as O8). For example, TSS (Time Sharing) used in system development
AIM (System) management program, online network function, and database function.
Advanced Information Manag
er) management program run under one O8. Although these two management programs manage files of different formats, it is desired that these seven pools be easily accessible from either management program system.

[Conventional technology]

The two management programs (AIM and TSS) are 1
A conventional example of an online processing system that operates under one operating system (control program) will be explained with reference to FIG.

FIG. 5 is a block diagram illustrating a conventional example.

In FIG. 5, the processing unit 1 executes the control program PX to control the terminals TA and TB, and also controls the two management programs AIM and TSS.
operate under this control.

The terminal TA is a terminal used by the user for data processing, and at the start of operation, the user logs on from this terminal TA (L
og-on) When the command LOA is input, the processing unit 1 sets the switching unit (logical switch) 2 to the contact a side and establishes the terminal TA as a terminal operated by the management program AIM. The input/output control program Pa is managed by the management program AIMVc and is used to read/write data to/from the file FA. Note that the file FA is constructed using a database.

The other terminal TB is for system development, and when the logon command LOB is input at the start of operation, the processing unit 1
7. Set the switching unit (logic switch) 3 to the contact side. The terminal TB is opened as a terminal operated by the management program TSS. The input/output control program pb is managed by the management program TSS and is used for reading/writing data to/from the file FB. Note that the file FB is constructed in a normal data format.

As described above, the two management programs AIM and TSS under one control program PX are configured to manage individually opened terminals and files.

[Problem that the invention seeks to solve]

In the online processing system explained in FIG. There was a problem in that the terminal had to be re-opened as a new terminal operating under the management program AIMO. The same applies when the terminal TA needs to access the file Fn.

[Means for solving problems]

The above problem is caused by a program belonging to one of the plurality of management systems controlled by a control program, an input/output device controlled by the program, and a program belonging to the other management system among the plurality of management systems. A system comprising a program and a file device controlled by the log system, further comprising means for transmitting information from a program belonging to one of the management systems to a program belonging to the other management system; When the input/output device issues a request for access to the file device, the program belonging to one of the management systems starts the specific program and executes the specified program. 7 of the present invention, wherein the program transmits an access request from the program belonging to the one management system to the program belonging to the other management system, and the program controls access to the file device based on the transmitted access request. Solved by aisle access control method.

[Effect]

As described above, in the present invention, a plurality of management programs (for example, a TSS management program, a database management program, etc.) operate under the control of one control program, and files and input/output devices are opened for each of these management program systems. In the information processing system, a specific program that operates under the control of the control program and mediates the transmission of commands between programs belonging to the management program system is provided, for example, an input program established in the management program system for TSS is provided. When an output device requires access to a file under a database management program system, the specific log system executes a database system file access program based on an access request from a TSS system input/output device. It acts as an intermediary to activate the system. This results in
There is no need to relocate the input/output devices under the TSS system to the database system.

〔Example〕

The present invention will be explained below with reference to the drawings. FIG. 1 is a block diagram illustrating one embodiment of the present invention.

The online processing system shown in FIG. 1 is provided with a management program TSS for system development, and management programs A I Mt and A I Mt for user's work processing, both of which are controlled by a control program. Operates under control of PX.

In FIG. 1, the terminal Ts issues a logon command LOB at the start of operation, and the management program TSS
Established to operate under. Therefore, this terminal TB can only access the file Fi+.

Terminal TB, for example, data D in 7-isle FA of another system
When it is desired to read data, the following procedures and processing procedures are used to read the data.

■ Terminal TB requests access to file FA R
Emit DA.

■ The program PB that receives this access request RDA (a program under the management program TSS) issues a calling command CALL-PE to call the program PE, and also notifies the access request RDA0■ The called program PE issues a startup command 5TPA is issued to activate the management program AIM + the subordinate program PA, and notify the access request RDA.

(2) Program PA issues a read command READ based on access request RDA.

■ Upon receiving the read command READ, the control unit 5 reads the file F.
After transferring the data D in e to the work area WA of the storage section 4, an end signal EN is generated to notify the program PA of the end of reading.

(2) Program PA issues an end command RED to notify program PE of the end of reading.

■ Program PE issues an end command END and notifies program PB of the address M of work area WA.0 ■ Program PB takes out data D in work area WA and transfers it to terminal TB.

The above processing procedure enables the terminal Tn to read data D from the file FA belonging to another system. In addition, the terminal TB uses the management program AIM
! When reading data in the subordinate file Fe, an access request RI)C is issued, but in this case, after the program Pz identifies this, a start command 5TPe is issued.
(not shown) to access the file Fe.

Note that even when the terminal TA needs to access the file Fs, the program Pg mediates the access. Furthermore, the programs P AI P BI Po and PE are programs that operate as tasks (TASK) on the storage unit 4 . FIG. 2, FIG. 3, and FIG. 4 are flowcharts showing the outline of the processing procedure of the programs PR+Pv and PA, respectively, but since the procedure has been described in the operation description above, the explanation will be omitted.

〔Effect of the invention〕

As described above, the present invention eliminates the need for the procedure of re-opening the terminal when a terminal opened under a given management system accesses a file belonging to a different management system.
This has the effect of significantly improving processing efficiency.

[Brief explanation of drawings]

FIG. 1 is a block diagram illustrating an embodiment of the present invention. FIG. 2 is a flowchart explaining the processing procedure of the program PR in one embodiment of the present invention. FIG. 3 is a flowchart explaining the processing procedure of program Pv in one embodiment of the present invention. FIG. 4 is a flowchart explaining the processing procedure of program PA in one embodiment of the present invention. FIG. 5 is a block diagram illustrating a conventional example. In the figure, 1 is a processing unit, 2.3 is a switching unit, 4 is a storage unit, 5, 6.7 is a control unit, AIM, AIM+, and AIMx are management programs equipped with online network functions and database functions, and CALL-PK is the calling command,
D is data, EN is end signal, END is end command, F
AI FBI Fc is file, LOA, LOB is logon command 1M is address 1 p A, P a + P B
, P bl P c * P E is a program, PX is a control program, RDA, RDC are access requests, R
EAD is a read command, RED is a termination command, STP person is activated = cloak ITA, TB is a terminal, TSS is a management program for system development, WA is a work area, and a and b are contact points. i'ize dead number 2 diagram Y-3 diagram

Claims (1)

[Claims] A program belonging to one of a plurality of management systems controlled by a control program, an input/output device controlled by the program, and a program belonging to the other management system among the plurality of management systems. In a system equipped with a file device controlled by the program, the control program includes means for transmitting information from a program belonging to the one management system to a program belonging to the other management system. A specific program that operates under
When the input/output device issues an access request to the seven-aisle device, the program belonging to the one management system starts the specific program, and the specific program is transmitted to the one management system. An access request from a program to which the program belongs is transmitted to a program belonging to the other management system, and the program controls access to the file device based on the transmitted access request.
A file control method that is characterized by the ability to perform