crypto/xts.c

File Facts

System

Linux kernel

Corpus path

crypto/xts.c

Extension

.c

Size

12192 bytes

Lines

477

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.
• 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/cipher.h
• crypto/internal/skcipher.h
• crypto/scatterwalk.h
• linux/err.h
• linux/init.h
• linux/kernel.h
• linux/module.h
• linux/scatterlist.h
• linux/slab.h
• crypto/xts.h
• crypto/b128ops.h
• crypto/gf128mul.h

Detected Declarations

• struct xts_tfm_ctx
• struct xts_instance_ctx
• struct xts_request_ctx
• function xts_setkey
• function twice
• function xts_xor_tweak_pre
• function xts_xor_tweak_post
• function xts_cts_done
• function xts_cts_final
• function xts_encrypt_done
• function xts_decrypt_done
• function xts_init_crypt
• function xts_encrypt
• function xts_decrypt
• function xts_init_tfm
• function xts_exit_tfm
• function xts_free_instance
• function xts_create
• function xts_module_init
• function xts_module_exit
• module init xts_module_init

Annotated Snippet

module_init(xts_module_init);
module_exit(xts_module_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("XTS block cipher mode");
MODULE_ALIAS_CRYPTO("xts");
MODULE_IMPORT_NS("CRYPTO_INTERNAL");
MODULE_SOFTDEP("pre: ecb");

Annotation

• Immediate include surface: `crypto/internal/cipher.h`, `crypto/internal/skcipher.h`, `crypto/scatterwalk.h`, `linux/err.h`, `linux/init.h`, `linux/kernel.h`, `linux/module.h`, `linux/scatterlist.h`.
• Detected declarations: `struct xts_tfm_ctx`, `struct xts_instance_ctx`, `struct xts_request_ctx`, `function xts_setkey`, `function twice`, `function xts_xor_tweak_pre`, `function xts_xor_tweak_post`, `function xts_cts_done`, `function xts_cts_final`, `function xts_encrypt_done`.
• Atlas domain: Kernel Services / crypto.
• 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.