JPS6454556A - File checking system - Google Patents

File checking system

Info

Publication number
JPS6454556A
JPS6454556A JP62211201A JP21120187A JPS6454556A JP S6454556 A JPS6454556 A JP S6454556A JP 62211201 A JP62211201 A JP 62211201A JP 21120187 A JP21120187 A JP 21120187A JP S6454556 A JPS6454556 A JP S6454556A
Authority
JP
Japan
Prior art keywords
program
crc
block
read
value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62211201A
Other languages
Japanese (ja)
Inventor
Tsuneo Itagaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62211201A priority Critical patent/JPS6454556A/en
Publication of JPS6454556A publication Critical patent/JPS6454556A/en
Pending legal-status Critical Current

Links

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To confirm the normality of a program file at the time of loading a program, and to prevent the generation of a long time processing, etc., by a breakdown program, by comparing a value of a read CRC block with a calculated a CRC value. CONSTITUTION:A program is segmented into (n) blocks of P(1)-P(n), and first of all, a counter of a program block is initialized to '1', and P(1) is read from a disk and written to a memory. Subsequently, whether P(1) has been read normally or not is checked, and when it is read normally, the CRC calculation of the block P(1) is executed, and also, a CRC block C(1) to the block P(1) of a CRC file of a disk is read out. Next, a value of the read CRC block C(1) and a calculated CRC value are compared, and in case of discrepancy, an install request display is executed, and a system is stopped. In such a way, the normality of a program file can be confirmed at the time of loading a program, and the generation of a long time processing, etc., by a breakdown program can be prevented.
JP62211201A 1987-08-25 1987-08-25 File checking system Pending JPS6454556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62211201A JPS6454556A (en) 1987-08-25 1987-08-25 File checking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62211201A JPS6454556A (en) 1987-08-25 1987-08-25 File checking system

Publications (1)

Publication Number Publication Date
JPS6454556A true JPS6454556A (en) 1989-03-02

Family

ID=16602036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62211201A Pending JPS6454556A (en) 1987-08-25 1987-08-25 File checking system

Country Status (1)

Country Link
JP (1) JPS6454556A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07319775A (en) * 1994-05-23 1995-12-08 Nec Corp Memory collation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07319775A (en) * 1994-05-23 1995-12-08 Nec Corp Memory collation system

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