JPH04362733A - System program updating system - Google Patents

Abstract

PURPOSE:To dynamically update a system program by re-editing a system file while a computer system is working. CONSTITUTION:A system file catalog register means 53 registers the file information on a corrected system file 1 which is edited in a file area 32 by a file editing means 52 into a system file catalog 34. A system program suppression means 55 suppresses temporarily the access given to a memory non-resident system program stored in the file 1. A system table updating means 56 updates a system program table 41 and a system file table 42 in regard of the system program. A system program restart means 57 cancels the access suppression state set by the means 55. Then a corrected information output means 54 and a dynamically updated information output means 58 output the prescribed corrected information and dynamically updated information.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system program update method for updating a system program in a computer system.

0002

2. Description of the Related Art FIG. 2 is a block diagram showing the structure of an example of a conventional system program update method of this type. Based on this figure, the operation of the conventional system program update method will be explained.

[0003] When it becomes necessary to replace a system program by modifying the source, the computer system is temporarily stopped and restarted.

[0004] At this restart, the SG (System
The file editing means 241 in the Generation) program 24 edits a modified system file in which a set of modified system programs (programs in which source modifications have been added to the system program to be updated) is stored based on the file editing instruction card 25. 21 is input (read), the modified system file 21 is stored (written) in the free space in the system volume 23-1, and the file of the modified system file 21 is stored in the system file catalog 230 in the system volume 23-2. file information including the system volume name, system volume name of the system volume 23-1, and file size of the modified system file 21 is set.

The file definition means 242 inputs the file definition instruction card 26 related to the modified system file 21, refers to the system file catalog 230, and creates file information of the modified system file 21 based on the instructions of the file definition instruction card 26. Search for.

Next, when the file definition means 242 recognizes the file information of the corrected system file 21 through the above-described search, it sets the file information in the system file table 222 in the main memory 22.

The formats of the system file table 222 and the system file catalog 230 are similar, but the system file catalog 230 stores information regarding all system files, whereas the system file table 222 stores file definitions. instruction card 2
The difference is that only information regarding the system file specified in 6 is stored.

Furthermore, the file definition means 242 reads the modified system file 21 in the system volume 23-1, and defines the system program name, starting position in the file, program size, file name ( System program information consisting of a system file name) and program attributes is registered in the system program table 221 (see FIG. 8) in the main memory 22.

As described above, in the conventional system program update method, after the computer system is stopped, the system files are re-edited and redefined, and the source of the system program is modified and replaced.

0010

[Problem to be Solved by the Invention] In the conventional system program update method described above, after the computer system is stopped, the system files are re-edited and redefined to realize source modification and replacement of the system program. , there is a drawback that the edited system file can only be edited during SG after the computer system is stopped.

[0011] Furthermore, since it is necessary to perform SG accompanied by editing work to re-edit the system file, there is a drawback that it takes a long time to restart the computer system.

[0012] In view of the above-mentioned points, an object of the present invention is to make it possible to re-edit system files during operation of a computer system, and to update a system program (system program referenced when accessing the system program). An object of the present invention is to provide a system program update method that can dynamically update tables and system file tables without stopping the computer system.

[0013]

[Means for Solving the Problems] The system program update method of the present invention includes a file securing means that secures a file area in a free area in a system volume, and a modified system that uses the file area secured by this file securing means. a file editing means for editing a file; a system file catalog registration means for registering file information regarding the modified system file edited by the file editing means in a system file catalog; and a modified system file edited by the file editing means. and a correction information output means for outputting correction information regarding the correction information.

Furthermore, the system program update method of the present invention includes a file securing means for securing a file area in a free area in the system volume, and a modified system file is edited in the file area secured by the file securing means. a file editing means; a system file catalog registration means for registering file information regarding the modified system file edited by the file editing means in a system file catalog; a correction information output means to output; a system program inhibition means for temporarily inhibiting access to a non-memory system program in the modified system file edited by the file editing means; system table updating means for updating a system program table and a system file table related to a system program that has been suppressed; and a dynamic update information output means for outputting dynamic update information regarding the system program that has been updated by the system table update means.

[0015]

[Operation] In the system program update method of the present invention, the file securing means secures a file area in the free area in the system volume, and the file editing means edits the modified system file in the file area secured by the file securing means. The system file catalog registration means registers file information about the modified system file edited by the file editing means in the system file catalog, and the modification information output means registers the modification information about the modified system file edited by the file editing means. Output.

Further, in the system program update method of the present invention, the file securing means secures a file area in a free area in the system volume, and the file editing means stores the modified system file in the file area secured by the file securing means. , the system file catalog registration means registers file information regarding the modified system file edited by the file editing means in the system file catalog, and the modification information output means registers the file information regarding the modified system file edited by the file editing means. outputting information, the system program inhibiting means temporarily inhibits access to the non-memory system program in the modified system file edited by the file editing means, and the system table updating means accesses the system program inhibiting means. The system program suppressing means updates the system program table and system file table regarding the system program that has been suppressed, and the system program restarting means resumes access to the system program that was the target of the update by the system table updating means. The inhibited state is canceled, and the dynamic update information output means outputs dynamic update information regarding the system program that has been updated by the system table update means.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the system program update method of the present invention.

The system program update method of this embodiment updates the modified system file 1 (a file storing a set of modified system programs), the printer 2, the system volumes 3-1 and 3-2, and the main It is configured to include a memory 4, a system file editing program 5, and a file editing instruction card 6.

The system volume 3-1 includes a space table 31 and a file area 32, and the system volume 3-2 has a VTOC (Volume
It is configured to include a table of contents) 33 and a system file catalog 34 (although not shown, a space table and VTOC exist in both system volumes). A pointer to the system file catalog 34 exists in the VTOC 33 in the system volume 3-2.

The main memory 4 includes a system program table 41 and a system file table 42.

The system file editing program 5 includes a file securing means 51, a file editing means 52, a system file catalog registration means 53, a modification information output means 54, a system program suppressing means 55, and a system table updating means 56. , system program restart means 57, and dynamic update information output means 58.

The system program update method shown in FIG. 1 is a system program update method that falls under "Claim 2" in the "Claims." The system program update method corresponding to "Claim 1" includes the system program suppressing means 55, the system table updating means 56, the system program restarting means 57, and the dynamic update information outputting means 58 in the system file editing program 5 in FIG. This is a configuration in which there is no such thing. Other than the operations by these means, the system program update method according to "Claim 1" and the system program update method according to "Claim 2" are the same in operation. Therefore, “Claim 1
The operation of the system program update method corresponding to ``Claim 2'' will be explained in conjunction with the explanation of the operation of the system program update method of the present embodiment corresponding to ``Claim 2'' described below.

FIG. 3 is a diagram showing the format of the system file catalog 34. The system file catalog 34 contains entries (
(Entries with file name, system volume name, starting position within the volume, and file size).

FIG. 4 is a diagram showing the format of the modified system file 1. The modified system file 1 includes the program name, program attributes, and program image of each system program.

FIG. 5 shows the system program table 41.
FIG. System program table 4
1 has an entry corresponding to each system program (an entry having a system program name, a starting position in a file, a program size, a file name, a file attribute, and a program access inhibition flag). In addition,
The system program table used in the conventional system program update method did not have a program access inhibition flag (see FIG. 8).

FIG. 6 is a diagram showing the format of the system file table 42. The system file table 42 has entries (entries with file name, system volume name, starting position within the volume, and file size) corresponding to each current system file.

FIG. 7 is a diagram showing the format of the file editing instruction card 6. The file editing instruction card 6 has parameters such as a file name, system volume name, file size, and input media device.

Next, the operation of the system program update method of this embodiment configured as described above will be explained.

The file securing means 51 in the system file editing program 5 inputs the file editing instruction card 6, and the information obtained from the file editing instruction card 6 (file name, system volume name, file name regarding the corrected system file 1). Size and input media device (
"F1", "V1", "S1" and "IN" respectively.
'')) into the internal buffer of the system file editing program 5.

The file securing means 51 also stores the modified system file 1 by the file editing instruction card 6.
A file reservation request is made to the system volume 3-1 with the system volume name V1, which is instructed to store the file size S1 specified by the file editing instruction card 6. This file reservation request is made by the OS (Operator) in the computer system to which this embodiment is applied.
ing System), and the system volume 3-
A file area 32 is secured in a free area within system volume 3-1, and the space table 31 within system volume 3-1 is updated to reflect this reservation.

The file editing means 52 is an input medium device I.
The corrected system file 1 set to N (not shown) is input (read) and the file securing means 51
The modified system file 1 is stored (written) in the file area 32 secured by. At that time, the system program name, program size, and program attribute (see FIG. 4) of each system program in the modified system file 1, and the system related to securing the file area in the system volume 3-1 by the file securing means 51. The volume name, file name, file size, and start position within the volume are held in an internal buffer within the system file editing program 5.

The system file catalog registration means 53 refers to the VTOC 33 in the system volume 3-2 where the system file catalog 34 exists, recognizes the pointer to the system file catalog 34 in the system volume 3-2, and performs file editing. The file information of the corrected system file 1 edited by the means 52 (file name "F1", system volume name "V1", starting position in the volume "U1" and file size "S")
1'') in the system file catalog 34.

Based on the information held in the internal buffer by the file editing means 52, the modification information output means 54 generates a modification information having the file name, system program name, program size, program attribute, and system volume name regarding the modified system file 1. Information (the minimum required information is the file name and system program name) is output to the printer 2.

[0035] Through the above processing, editing of the corrected system file 1 (re-editing of the system file) is realized during operation of the computer system. The operation of the system program update method according to claim 1 corresponds to the operation according to the above processing.

[0036] In the process described above, if you want to replace the edited system file 1 with the current system file, it is necessary to redefine the revised system file 1 during SG after stopping the computer system. be. Therefore, in computer systems that operate 24 hours a day,
Even if you edit the modified system file 1 during operation, there is a problem that you have to wait until the computer system is stopped in order to replace the modified system file 1 with the current system file (However, if you edit the modified system file 1 before the SG Since the editing has already been completed, the SG time reduction can be achieved).

[0037] In order to solve such a problem, the code 5
There are processes described below by each of the means 5 to 58 (these processes are unique to the system program update method falling under "Claim 2").

The system program inhibiting means 55 performs the following processing.

■ When the modified system file 1 is edited by the file editing means 52, the system program name of each system program in the modified system file 1 taken into the internal buffer of the system file editing program 5 is sequentially retrieved. , refers to the system program table 41 in the main memory 4 and searches the system program table 41 for an entry having the system program name.

■ When an entry in the system program table 41 with the system program name is recognized, the program attributes in that entry are checked to determine whether the system program related to that entry is memory resident or non-memory resident. Determine if there is.

(2) If the system program is memory-resident, the system table updating means 56 does not process the system program, and the process moves on to checking the program attributes of the next system program.

■ If the system program is non-memory resident, set the program access suppression flag in the entry to on (“1”) to temporarily prevent other jobs from accessing the system program. .

Regarding a system program whose access has been inhibited by the system program inhibiting means 55, the system table updating means 56 updates the entry related to the system program in the system program table 41 held in the internal buffer of the system file editing program 5. Set the system program name, starting position within the file, program size, file name, and program attributes.

[0044] Furthermore, the system table updating means 56
Information regarding the modified system file 1 in which the system program is stored (file name, system volume name, starting position within the volume, and file size) is set in the system file table 42 in the main memory 4.

After the processing by the system table updating means 56, the system program restarting means 57 updates the system program table 41 with respect to the system program whose access has been inhibited by the system program inhibiting means 55.
The program access inhibition flag of the corresponding entry in the entry is set to off (“0”). As a result, access to the system program is resumed.

The dynamic update information output means 58 outputs the system program name, program size, program attribute, file name, and file information regarding the system program after the update, regarding the system program that has been dynamically updated by the system table update means 56. Dynamic update information (minimum required information is the system program name, program attributes regarding memory-resident/non-resident types, and file name) having a starting position within the printer 4 is output to the printer 4.

[0047] The above processing realizes re-editing of system files and dynamic updating of system programs when the computer system is in operation.

[0048]

[Effects of the Invention] As explained above, the present invention realizes re-editing of system files during operation of a computer system by providing a file securing means, a file editing means, a system file catalog registration means, and a modification information output means. It has the effect of being able to

In addition to the file securing means, file editing means, system file catalog registration means, and correction information output means, system program suppression means, system table updating means, system program restart means, and dynamic update information output means are provided. This has the effect of making it possible to dynamically update the system program (update performed without stopping the computer system).

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of an example of a conventional system program update method.

FIG. 3 is a diagram showing the format of the system file catalog in FIG. 1;

FIG. 4 is a diagram showing the format of the modified system file in FIG. 1;

FIG. 5 is a diagram showing the format of the system program table in FIG. 1;

FIG. 6 is a diagram showing the format of the system file table in FIG. 1;

FIG. 7 is a diagram showing the format of the file editing instruction card in FIG. 1;

FIG. 8 is a diagram showing the format of the system program table in FIG. 2;

[Explanation of symbols]

1 Modified system file 2 Printer 3-1, 3-2 System volume 4 Main memory 5 System file editing program 6 File editing instruction card 31 Space table 32 File area 33 VTOC 34 System file catalog 41 System program table 42 System file table 51 File securing means 52 File editing means 53 System file catalog registration means 54 Modification information output means 55 System program suppression means 56 System table update means 57 System program restart means 58 Dynamic update information output means

Claims (2)

[Claims] Claim 1: A file securing means for securing a file area in a free area in a system volume, a file editing means for editing a modified system file in the file area secured by the file securing means, and the file editing means. system file catalog registration means for registering file information regarding the modified system file edited by the system file catalog in a system file catalog; and modification information output means for outputting modification information regarding the modified system file edited by the file editing means. A system program update method characterized by: 2. A file securing means for securing a file area in a free area in a system volume, a file editing means for editing a modified system file in the file area secured by the file securing means, and the file editing means. system file catalog registration means for registering file information regarding the modified system file edited by the system file catalog in a system file catalog; modification information output means for outputting modification information regarding the modified system file edited by the file editing means; A system program suppression means for temporarily suppressing access to a non-memory system program in a modified system file edited by a file editing means, and a system program related to the system program whose access is suppressed by the system program suppression means. A system table updating means for updating tables and system file tables, and a system program for releasing the inhibited state by the system program inhibiting means in order to resume access to the system program that has been updated by the system table updating means. A system program update method comprising: a restarting means; and a dynamic update information outputting means for outputting dynamic update information regarding a system program that has been updated by the system table updating means.