crypto/deflate.c

File Facts

System

Linux kernel

Corpus path

crypto/deflate.c

Extension

.c

Size

5606 bytes

Lines

265

Domain

Kernel Services

Bucket

crypto

Inferred role

Kernel Services: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Shared kernel service surface used by multiple subsystems, including helpers, cryptography, virtualization support, and async I/O infrastructure.

• Shared kernel service surface used by multiple subsystems, including helpers, cryptography, virtualization support, and async I/O infrastructure.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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

• crypto/internal/acompress.h
• crypto/scatterwalk.h
• linux/init.h
• linux/kernel.h
• linux/module.h
• linux/mutex.h
• linux/overflow.h
• linux/percpu.h
• linux/scatterlist.h
• linux/slab.h
• linux/spinlock.h
• linux/zlib.h

Detected Declarations

• struct deflate_stream
• function deflate_free_stream
• function deflate_compress_one
• function deflate_compress
• function deflate_decompress_one
• function deflate_decompress
• function deflate_init
• function deflate_mod_init
• function deflate_mod_fini
• module init deflate_mod_init

Annotated Snippet

module_init(deflate_mod_init);
module_exit(deflate_mod_fini);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Deflate Compression Algorithm for IPCOMP");
MODULE_AUTHOR("James Morris <jmorris@intercode.com.au>");
MODULE_AUTHOR("Ard Biesheuvel <ardb@kernel.org>");
MODULE_AUTHOR("Herbert Xu <herbert@gondor.apana.org.au>");
MODULE_ALIAS_CRYPTO("deflate");
MODULE_ALIAS_CRYPTO("deflate-generic");

Annotation

• Immediate include surface: `crypto/internal/acompress.h`, `crypto/scatterwalk.h`, `linux/init.h`, `linux/kernel.h`, `linux/module.h`, `linux/mutex.h`, `linux/overflow.h`, `linux/percpu.h`.
• Detected declarations: `struct deflate_stream`, `function deflate_free_stream`, `function deflate_compress_one`, `function deflate_compress`, `function deflate_decompress_one`, `function deflate_decompress`, `function deflate_init`, `function deflate_mod_init`, `function deflate_mod_fini`, `module init deflate_mod_init`.
• Atlas domain: Kernel Services / crypto.
• Implementation status: integration 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.