include/uapi/linux/blk-crypto.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/blk-crypto.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/blk-crypto.h
Extension
.h
Size
1265 bytes
Lines
45
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct blk_crypto_import_key_arg {
	/* Raw key (input) */
	__u64 raw_key_ptr;
	__u64 raw_key_size;
	/* Long-term wrapped key blob (output) */
	__u64 lt_key_ptr;
	__u64 lt_key_size;
	__u64 reserved[4];
};

struct blk_crypto_generate_key_arg {
	/* Long-term wrapped key blob (output) */
	__u64 lt_key_ptr;
	__u64 lt_key_size;
	__u64 reserved[4];
};

struct blk_crypto_prepare_key_arg {
	/* Long-term wrapped key blob (input) */
	__u64 lt_key_ptr;
	__u64 lt_key_size;
	/* Ephemerally-wrapped key blob (output) */
	__u64 eph_key_ptr;
	__u64 eph_key_size;
	__u64 reserved[4];
};

/*
 * These ioctls share the block device ioctl space; see uapi/linux/fs.h.
 * 140-141 are reserved for future blk-crypto ioctls; any more than that would
 * require an additional allocation from the block device ioctl space.
 */
#define BLKCRYPTOIMPORTKEY _IOWR(0x12, 137, struct blk_crypto_import_key_arg)
#define BLKCRYPTOGENERATEKEY _IOWR(0x12, 138, struct blk_crypto_generate_key_arg)
#define BLKCRYPTOPREPAREKEY _IOWR(0x12, 139, struct blk_crypto_prepare_key_arg)

#endif /* _UAPI_LINUX_BLK_CRYPTO_H */

Annotation

Implementation Notes