tools/testing/selftests/livepatch/test_modules/test_klp_syscall.c

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/livepatch/test_modules/test_klp_syscall.c

Extension

.c

Size

3016 bytes

Lines

132

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: syscall or user/kernel boundary

Status

core implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or participates in a user/kernel boundary; inspect argument validation, copy_from_user/copy_to_user, credentials, and dispatch target.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/kernel.h
• linux/sched.h
• linux/slab.h
• linux/livepatch.h

Detected Declarations

• function npids_show
• function lp_sys_getpid
• function livepatch_init
• function livepatch_exit
• module init livepatch_init

Annotated Snippet

module_init(livepatch_init);
module_exit(livepatch_exit);
MODULE_LICENSE("GPL");
MODULE_INFO(livepatch, "Y");
MODULE_AUTHOR("Libor Pechacek <lpechacek@suse.cz>");
MODULE_AUTHOR("Nicolai Stange <nstange@suse.de>");
MODULE_AUTHOR("Marcos Paulo de Souza <mpdesouza@suse.com>");
MODULE_DESCRIPTION("Livepatch test: syscall transition");

Annotation

• Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/sched.h`, `linux/slab.h`, `linux/livepatch.h`.
• Detected declarations: `function npids_show`, `function lp_sys_getpid`, `function livepatch_init`, `function livepatch_exit`, `module init livepatch_init`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: core implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.