Transparent Recovery of Self-Sustained Code-Upgrade

• US 20080189694A1
• Filed: 02/06/2007
• Published: 08/07/2008
• Est. Priority Date: 02/06/2007
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Goldberg, Itzhack, Fifer, Nicholas D., Gayda, Ilan, Nagin, Kenneth
• Granted Patent: US 7,971,200 B2
• Time in Patent Office: Days
• US Class Current: 717/168
• CPC Class Codes: G06F 8/65 Updates security arrangements therefor G06F21/57

Abstract

A defective self-sustained code-upgrade code is recovered. A relevant unset variable is set to avoid an un-initialized command failure. A relevant set variable is unset to render a second invocation of the set variable to appear as a first invocation A fix-named file is retrieved containing a plurality of code entries organized in a stanza style. The fixed-named file is executed. The plurality of stanza-organized entries are sourced by the defective code-upgrade code to change a variable which has been previously set, thereby overriding an existing process.

Claims

1. A method of repairing an applying computer code, comprising:

executing a plurality of code entries, the entries organized according to a stanza style, wherein the applying computer code sources the plurality of stanza-style entries into a running program to change a variable which has been previously set by the running program.

2. The method of claim 1, further including setting a relevant unset variable to avoid an un-initialized command failure.

3. The method of claim 1, further unsetting a relevant set variable to render a second invocation of the relevant set variable to appear as a first invocation.

4. The method of claim 1, further including retrieving a fix-named file containing the plurality of code entries organized according to the stanza-style.

5. The method of claim 1, wherein the stanza-style entries further include scripting code to perform the variable changing function.

6. A method of recovering defective self-sustained code-upgrade code, comprising:

setting a relevant unset variable to avoid an un-initialized command failure;

unsetting a relevant set variable to render a second invocation of the set variable to appear as a first invocation;

retrieving a fix-named file containing a plurality of code entries organized in a stanza style;

executing the fixed-named file, wherein the plurality of stanza-style entries are sourced by the defective code-upgrade code to change a variable which has been previously set, thereby overriding an existing process.

7. The method of claim 6, wherein the stanza-organized entries further include scripting code to perform the variable changing function.

8. A computer program product, comprising:

a computer usable medium including computer usable program code for recovering defective self-sustained code-upgrade code, said computer program product including

computer usable program code for executing a plurality of code entries, the entries organized according to a stanza-style, wherein the applying code sources the plurality of stanza-style entries into a running program to change a variable which has been previously set by the running program.

9. The computer program product of claim 8, further including computer usable program code for unsetting a relevant set variable to render a second invocation of the relevant set variable to appear as a first invocation.

10. The computer program product of claim 8, further including computer usable program code for retrieving a fix-named file containing the plurality of code entries organized according to the stanza-style.

11. The computer program product of claim 8, further including computer usable program code for terminating an associated process to increase the probability that the stanza-style entries are effectively sourced by the running program.

12. The computer program product of claim 8, wherein the stanza-style entries further include scripting code to perform the variable changing function.