include/uapi/linux/nfsd/cld.h

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

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/nfsd/cld.h
Extension
.h
Size
3122 bytes
Lines
98
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 cld_name {
	__u16		cn_len;				/* length of cm_id */
	unsigned char	cn_id[NFS4_OPAQUE_LIMIT];	/* client-provided */
} __attribute__((packed));

/* sha256 hash of the kerberos principal */
struct cld_princhash {
	__u8		cp_len;				/* length of cp_data */
	unsigned char	cp_data[SHA256_DIGEST_SIZE];	/* hash of principal */
} __attribute__((packed));

struct cld_clntinfo {
	struct cld_name		cc_name;
	struct cld_princhash	cc_princhash;
} __attribute__((packed));

/* message struct for communication with userspace */
struct cld_msg {
	__u8		cm_vers;		/* upcall version */
	__u8		cm_cmd;			/* upcall command */
	__s16		cm_status;		/* return code */
	__u32		cm_xid;			/* transaction id */
	union {
		__s64		cm_gracetime;	/* grace period start time */
		struct cld_name	cm_name;
		__u8		cm_version;	/* for getting max version */
	} __attribute__((packed)) cm_u;
} __attribute__((packed));

/* version 2 message can include hash of kerberos principal */
struct cld_msg_v2 {
	__u8		cm_vers;		/* upcall version */
	__u8		cm_cmd;			/* upcall command */
	__s16		cm_status;		/* return code */
	__u32		cm_xid;			/* transaction id */
	union {
		struct cld_name	cm_name;
		__u8		cm_version;	/* for getting max version */
		struct cld_clntinfo cm_clntinfo; /* name & princ hash */
	} __attribute__((packed)) cm_u;
} __attribute__((packed));

struct cld_msg_hdr {
	__u8		cm_vers;		/* upcall version */
	__u8		cm_cmd;			/* upcall command */
	__s16		cm_status;		/* return code */
	__u32		cm_xid;			/* transaction id */
} __attribute__((packed));

#endif /* !_NFSD_CLD_H */

Annotation

Implementation Notes