Find and track information of interface usage of software libraries by other software

• US 8,887,122 B2
• Filed: 11/23/2010
• Issued: 11/11/2014
• Est. Priority Date: 11/23/2010
• Status: Active Grant

• Current Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Original Assignee: Red Hat, Inc. (International Business Machines Corporation)
• Inventors: Das, Kushal
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): HEBERT, THEODORE E
• Application Number:
  US12/953,286
• Publication Number:
  US 20120131539A1
• Time in Patent Office: 1,449 Days
• Field of Search: 717/100
• US Class Current: 717/100
• CPC Class Codes: G06F 11/3604 Software analysis for verifying properties of programs byte-code verification G06F9/44589

Abstract

A library controller that ranks shared libraries that are available from an operating system is described. In one embodiment, the library controller receives multiple different software, where each of the different software use one or more of the shared libraries. The library controller extracts library usage details for each of the multiple different software and provisioning details from each of the shared libraries. Furthermore, the library controller ranks the shared libraries based on the library usage and provisioning details.

Claims

1. A computer-implemented method comprising:

extracting one or more first symbol and symbol version pairs from one or more first symbol tables in a plurality of different programs to be executed within an operating system, wherein each of the one or more first symbol tables uses one or more of a plurality of shared libraries within the operating system;

identifying one or more second symbol and symbol version pairs provided by the plurality of shared libraries, wherein each symbol version in the one or more first symbol and symbol version pairs and the one or more second symbol and symbol version pairs comprises a sequential version identifier;

comparing the one or more first symbol and symbol version pairs to the one or more second symbol and symbol version pairs to identify ones of the one or more first symbol and symbol version pairs that are made available by the plurality of shared libraries;

in view of the ones of the one or more first symbol and symbol version pairs that are made available by the plurality of shared libraries, determining that a first library version in the plurality of shared libraries is used by more of the plurality of different programs than a second library version in the plurality of shared libraries or that the first library version is used by more popular ones of the plurality of different programs than the second library version; and

ranking, by a processing device, the plurality of shared libraries in view of the ones of the one or more first symbol and symbol version pairs that are made available by the plurality of shared libraries, wherein ranking comprises ranking the first library version higher than the second library version in view of the determination that the first library version is used by more of the plurality of different programs than the second library version or that the first library version is used by the more popular ones of the plurality of different programs than the second library version.

2. The computer-implemented method of claim 1, wherein identifying the one or more second symbol and symbol version pairs comprises extracting the one or more second symbol and symbol version pairs from one or more second symbol tables in the plurality of shared libraries.

3. The computer-implemented method of claim 1, further comprising storing the one or more first symbol and symbol version pairs in a database.

4. The computer-implemented method of claim 1, further comprising storing the one or more second symbol and symbol version pairs in a database.

5. The computer-implemented method of claim 1, wherein determining comprises determining that the first library version is used by more of the plurality of different programs than the second library version, and wherein ranking the first library version higher than the second library version is in view of the determination that the first library version is used by more of the plurality of different programs than the second library version.

6. The computer-implemented method of claim 1, wherein determining comprises determining that the first library version is used by more popular ones of the plurality of different programs than the second library version, and wherein ranking the first library version higher than the second library version is in view of the determination that the first library version is used by the more popular ones of the plurality of different programs than the second library version.

7. A non-transitory computer readable storage medium having instructions stored thereon that, when executed by a processing device, cause the processing system to perform operations comprising:

extracting one or more first symbol and symbol version pairs from one or more first symbol tables in a plurality of different programs to be executed within an operating system, wherein each of the one or more first symbol tables uses one or more of a plurality of shared libraries within the operating system;

identifying one or more second symbol and symbol version pairs provided by the plurality of shared libraries, wherein each symbol version in the one or more first symbol and symbol version pairs and the one or more second symbol and symbol version pairs comprises a sequential version identifier;

comparing the one or more first symbol and symbol version pairs to the one or more second symbol and symbol version pairs to identify ones of the one or more first symbol and symbol version pairs that are made available by the plurality of shared libraries;

in view of the ones of the one or more first symbol and symbol version pairs that are made available by the plurality of shared libraries, determining that a first library version in the plurality of shared libraries is used by more of the plurality of different programs than a second library version in the plurality of shared libraries or that the first library version is used by more popular ones of the plurality of different programs than the second library version; and

ranking, by the processing device, the plurality of shared libraries in view of the ones of the one or more first symbol and symbol version pairs that are made available by the plurality of shared libraries, wherein ranking comprises ranking the first library version higher than the second library version in view of the determination that the first library version is used by more of the plurality of different programs than the second library version or that the first library version is used by the more popular ones of the plurality of different programs than the second library version.

8. The computer readable storage medium of claim 7, wherein identifying the one or more second symbol and symbol version pairs comprises extracting the one or more second symbol and symbol version pairs from one or more second symbol tables in the plurality of shared libraries.

9. The computer readable storage medium of claim 7, wherein determining comprises determining that the first library version is used by more of the plurality of different programs than the second library version, and wherein ranking the first library version higher than the second library version is in view of the determination that the first library version is used by more of the plurality of different programs than the second library version.

10. The computer readable storage medium of claim 7, wherein determining comprises determining that the first library version is used by more popular ones of the plurality of different programs than the second library version, and wherein ranking the first library version higher than the second library version is in view of the determination that the first library version is used by the more popular ones of the plurality of different programs than the second library version.

11. A system comprising:

a memory to store an operating system, a plurality of shared libraries, and a plurality of different programs to be executed within the operating system; and

a processing device, coupled to the memory, to;

extract one or more first symbol and symbol version pairs from one or more first symbol tables in the plurality of different programs, wherein each of the one or more first symbol tables uses one or more of the plurality of shared libraries within the operating system;

identify one or more second symbol and symbol version pairs provided by the plurality of shared libraries, wherein each symbol version in the one or more first symbol and symbol version pairs and the one or more second symbol and symbol version pairs comprises a sequential version identifier;

compare the one or more first symbol and symbol version pairs to the one or more second symbol and symbol version pairs to identify ones of the one or more first symbol and symbol version pairs that are made available by the plurality of shared libraries;

in view of the ones of the one or more first symbol and symbol version pairs that are made available by the plurality of shared libraries, determine that a first library version in the plurality of shared libraries is used by more of the plurality of different programs than a second library version in the plurality of shared libraries or that the first library version is used by more popular ones of the plurality of different programs than the second library version; and

rank the plurality of shared libraries in view of the ones of the one or more first symbol and symbol version pairs that are made available by the plurality of shared libraries, wherein the processing device is to rank the plurality of shared libraries by ranking the first library version higher than the second library version in view of the determination that the first library version is used by more of the plurality of different programs than the second library version or that the first library version is used by the more popular ones of the plurality of different programs than the second library version.

12. The system of claim 11, wherein the processing device is to determine that the first library version is used by more of the plurality of different programs than the second library version, and rank the first library version higher than the second library version in view of the determination that the first library version is used by more of the plurality of different programs than the second library version.

13. The system of claim 11, wherein the processing device is to determine that the first library version is used by more popular ones of the plurality of different programs than the second library version, and rank the first library version higher than the second library version in view of the determination that the first library version is used by the more popular ones of the plurality of different programs than the second library version.