include/uapi/linux/if_alg.h

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

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/if_alg.h
Extension
.h
Size
1636 bytes
Lines
62
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 sockaddr_alg {
	__u16	salg_family;
	__u8	salg_type[14];
	__u32	salg_feat;
	__u32	salg_mask;
	__u8	salg_name[64];
};

/*
 * Linux v4.12 and later removed the 64-byte limit on salg_name[]; it's now an
 * arbitrary-length field.  We had to keep the original struct above for source
 * compatibility with existing userspace programs, though.  Use the new struct
 * below if support for very long algorithm names is needed.  To do this,
 * allocate 'sizeof(struct sockaddr_alg_new) + strlen(algname) + 1' bytes, and
 * copy algname (including the null terminator) into salg_name.
 */
struct sockaddr_alg_new {
	__u16	salg_family;
	__u8	salg_type[14];
	__u32	salg_feat;
	__u32	salg_mask;
	__u8	salg_name[];
};

struct af_alg_iv {
	__u32	ivlen;
	__u8	iv[] __counted_by(ivlen);
};

/* Socket options */
#define ALG_SET_KEY			1
#define ALG_SET_IV			2
#define ALG_SET_OP			3
#define ALG_SET_AEAD_ASSOCLEN		4
#define ALG_SET_AEAD_AUTHSIZE		5
#define ALG_SET_DRBG_ENTROPY		6
#define ALG_SET_KEY_BY_KEY_SERIAL	7

/* Operations */
#define ALG_OP_DECRYPT			0
#define ALG_OP_ENCRYPT			1

#endif	/* _UAPI_LINUX_IF_ALG_H */

Annotation

Implementation Notes