samples/livepatch/livepatch-shadow-fix1.c

File Facts

System

Linux kernel

Corpus path

samples/livepatch/livepatch-shadow-fix1.c

Extension

.c

Size

4067 bytes

Lines

174

Domain

Support Tooling And Documentation

Bucket

samples

Inferred role

Support Tooling And Documentation: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

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

Detected Declarations

• struct dummy
• function klp_shadow_get_or_alloc
• function livepatch_fix1_dummy_leak_dtor
• function livepatch_fix1_dummy_free
• function livepatch_shadow_fix1_init
• function livepatch_shadow_fix1_exit
• module init livepatch_shadow_fix1_init

Annotated Snippet

module_init(livepatch_shadow_fix1_init);
module_exit(livepatch_shadow_fix1_exit);
MODULE_DESCRIPTION("Live patching demo for shadow variables");
MODULE_LICENSE("GPL");
MODULE_INFO(livepatch, "Y");

Annotation

• Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/livepatch.h`, `linux/slab.h`.
• Detected declarations: `struct dummy`, `function klp_shadow_get_or_alloc`, `function livepatch_fix1_dummy_leak_dtor`, `function livepatch_fix1_dummy_free`, `function livepatch_shadow_fix1_init`, `function livepatch_shadow_fix1_exit`, `module init livepatch_shadow_fix1_init`.
• Atlas domain: Support Tooling And Documentation / samples.
• Implementation status: integration implementation candidate.

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.