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1 /*
2  * linux/include/net/sunrpc/msg_prot.h
3  *
4  * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
5  */
6 
7 #ifndef _LINUX_SUNRPC_MSGPROT_H_
8 #define _LINUX_SUNRPC_MSGPROT_H_
9 
10 #ifdef __KERNEL__ /* user programs should get these from the rpc header files */
11 
12 #define RPC_VERSION 2
13 
14 /* spec defines authentication flavor as an unsigned 32 bit integer */
15 typedef u32	rpc_authflavor_t;
16 
17 enum rpc_auth_flavors {
18 	RPC_AUTH_NULL  = 0,
19 	RPC_AUTH_UNIX  = 1,
20 	RPC_AUTH_SHORT = 2,
21 	RPC_AUTH_DES   = 3,
22 	RPC_AUTH_KRB   = 4,
23 	RPC_AUTH_GSS   = 6,
24 	RPC_AUTH_MAXFLAVOR = 8,
25 	/* pseudoflavors: */
26 	RPC_AUTH_GSS_KRB5  = 390003,
27 	RPC_AUTH_GSS_KRB5I = 390004,
28 	RPC_AUTH_GSS_KRB5P = 390005,
29 	RPC_AUTH_GSS_LKEY  = 390006,
30 	RPC_AUTH_GSS_LKEYI = 390007,
31 	RPC_AUTH_GSS_LKEYP = 390008,
32 	RPC_AUTH_GSS_SPKM  = 390009,
33 	RPC_AUTH_GSS_SPKMI = 390010,
34 	RPC_AUTH_GSS_SPKMP = 390011,
35 };
36 
37 enum rpc_msg_type {
38 	RPC_CALL = 0,
39 	RPC_REPLY = 1
40 };
41 
42 enum rpc_reply_stat {
43 	RPC_MSG_ACCEPTED = 0,
44 	RPC_MSG_DENIED = 1
45 };
46 
47 enum rpc_accept_stat {
48 	RPC_SUCCESS = 0,
49 	RPC_PROG_UNAVAIL = 1,
50 	RPC_PROG_MISMATCH = 2,
51 	RPC_PROC_UNAVAIL = 3,
52 	RPC_GARBAGE_ARGS = 4,
53 	RPC_SYSTEM_ERR = 5
54 };
55 
56 enum rpc_reject_stat {
57 	RPC_MISMATCH = 0,
58 	RPC_AUTH_ERROR = 1
59 };
60 
61 enum rpc_auth_stat {
62 	RPC_AUTH_OK = 0,
63 	RPC_AUTH_BADCRED = 1,
64 	RPC_AUTH_REJECTEDCRED = 2,
65 	RPC_AUTH_BADVERF = 3,
66 	RPC_AUTH_REJECTEDVERF = 4,
67 	RPC_AUTH_TOOWEAK = 5,
68 	/* RPCSEC_GSS errors */
69 	RPCSEC_GSS_CREDPROBLEM = 13,
70 	RPCSEC_GSS_CTXPROBLEM = 14
71 };
72 
73 #define RPC_PMAP_PROGRAM	100000
74 #define RPC_PMAP_VERSION	2
75 #define RPC_PMAP_PORT		111
76 
77 #define RPC_MAXNETNAMELEN	256
78 
79 /*
80  * From RFC 1831:
81  *
82  * "A record is composed of one or more record fragments.  A record
83  *  fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of
84  *  fragment data.  The bytes encode an unsigned binary number; as with
85  *  XDR integers, the byte order is from highest to lowest.  The number
86  *  encodes two values -- a boolean which indicates whether the fragment
87  *  is the last fragment of the record (bit value 1 implies the fragment
88  *  is the last fragment) and a 31-bit unsigned binary value which is the
89  *  length in bytes of the fragment's data.  The boolean value is the
90  *  highest-order bit of the header; the length is the 31 low-order bits.
91  *  (Note that this record specification is NOT in XDR standard form!)"
92  *
93  * The Linux RPC client always sends its requests in a single record
94  * fragment, limiting the maximum payload size for stream transports to
95  * 2GB.
96  */
97 
98 typedef u32	rpc_fraghdr;
99 
100 #define	RPC_LAST_STREAM_FRAGMENT	(1U << 31)
101 #define	RPC_FRAGMENT_SIZE_MASK		(~RPC_LAST_STREAM_FRAGMENT)
102 #define	RPC_MAX_FRAGMENT_SIZE		((1U << 31) - 1)
103 
104 #endif /* __KERNEL__ */
105 #endif /* _LINUX_SUNRPC_MSGPROT_H_ */
106