include/linux/sunrpc/msg_prot.h

Source file repositories/reference/linux-study-clean/include/linux/sunrpc/msg_prot.h

File Facts

System
Linux kernel
Corpus path
include/linux/sunrpc/msg_prot.h
Extension
.h
Size
6715 bytes
Lines
224
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

#ifndef _LINUX_SUNRPC_MSGPROT_H_
#define _LINUX_SUNRPC_MSGPROT_H_

#define RPC_VERSION 2

/* spec defines authentication flavor as an unsigned 32 bit integer */
typedef u32	rpc_authflavor_t;

enum rpc_auth_flavors {
	RPC_AUTH_NULL  = 0,
	RPC_AUTH_UNIX  = 1,
	RPC_AUTH_SHORT = 2,
	RPC_AUTH_DES   = 3,
	RPC_AUTH_KRB   = 4,
	RPC_AUTH_GSS   = 6,
	RPC_AUTH_TLS   = 7,
	RPC_AUTH_MAXFLAVOR = 8,
	/* pseudoflavors: */
	RPC_AUTH_GSS_KRB5  = 390003,
	RPC_AUTH_GSS_KRB5I = 390004,
	RPC_AUTH_GSS_KRB5P = 390005,
	RPC_AUTH_GSS_LKEY  = 390006,
	RPC_AUTH_GSS_LKEYI = 390007,
	RPC_AUTH_GSS_LKEYP = 390008,
	RPC_AUTH_GSS_SPKM  = 390009,
	RPC_AUTH_GSS_SPKMI = 390010,
	RPC_AUTH_GSS_SPKMP = 390011,
};

/* Maximum size (in octets) of the machinename in an AUTH_UNIX
 * credential (per RFC 5531 Appendix A)
 */
#define RPC_MAX_MACHINENAME	(255)

/* Maximum size (in bytes) of an rpc credential or verifier */
#define RPC_MAX_AUTH_SIZE (400)

enum rpc_msg_type {
	RPC_CALL = 0,
	RPC_REPLY = 1
};

enum rpc_reply_stat {
	RPC_MSG_ACCEPTED = 0,
	RPC_MSG_DENIED = 1
};

enum rpc_accept_stat {
	RPC_SUCCESS = 0,
	RPC_PROG_UNAVAIL = 1,
	RPC_PROG_MISMATCH = 2,
	RPC_PROC_UNAVAIL = 3,
	RPC_GARBAGE_ARGS = 4,
	RPC_SYSTEM_ERR = 5,
	/* internal use only */
	RPC_DROP_REPLY = 60000,
};

enum rpc_reject_stat {
	RPC_MISMATCH = 0,
	RPC_AUTH_ERROR = 1
};

enum rpc_auth_stat {
	RPC_AUTH_OK = 0,		/* success */
	RPC_AUTH_BADCRED = 1,		/* bad credential (seal broken) */
	RPC_AUTH_REJECTEDCRED = 2,	/* client must begin new session */
	RPC_AUTH_BADVERF = 3,		/* bad verifier (seal broken) */
	RPC_AUTH_REJECTEDVERF = 4,	/* verifier expired or replayed */
	RPC_AUTH_TOOWEAK = 5,		/* rejected for security reasons */
	RPC_AUTH_INVALIDRESP = 6,	/* bogus response verifier */
	RPC_AUTH_FAILED = 7,		/* reason unknown */
	/* RPCSEC_GSS errors */
	RPCSEC_GSS_CREDPROBLEM = 13,	/* no credentials for user */
	RPCSEC_GSS_CTXPROBLEM = 14	/* problem with context */
};

#define RPC_MAXNETNAMELEN	256

/*
 * From RFC 1831:
 *
 * "A record is composed of one or more record fragments.  A record
 *  fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of
 *  fragment data.  The bytes encode an unsigned binary number; as with
 *  XDR integers, the byte order is from highest to lowest.  The number
 *  encodes two values -- a boolean which indicates whether the fragment
 *  is the last fragment of the record (bit value 1 implies the fragment
 *  is the last fragment) and a 31-bit unsigned binary value which is the
 *  length in bytes of the fragment's data.  The boolean value is the

Annotation

Implementation Notes