2 * This file is part of the SPL: Solaris Porting Layer.
4 * Copyright (c) 2008 Sun Microsystems, Inc.
6 * This is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21 #ifndef _SPL_RPC_XDR_H
22 #define _SPL_RPC_XDR_H
24 #include <sys/types.h>
25 #include <rpc/types.h>
28 * XDR enums and types.
38 struct xdr_ops
*x_ops
; /* Also used to let caller know if
39 xdrmem_create() succeeds (sigh..) */
40 caddr_t x_addr
; /* Current buffer addr */
41 caddr_t x_addr_end
; /* End of the buffer */
42 enum xdr_op x_op
; /* Stream direction */
45 typedef bool_t (*xdrproc_t
)(XDR
*xdrs
, void *ptr
);
48 bool_t (*xdr_control
)(XDR
*, int, void *);
50 bool_t (*xdr_char
)(XDR
*, char *);
51 bool_t (*xdr_u_short
)(XDR
*, unsigned short *);
52 bool_t (*xdr_u_int
)(XDR
*, unsigned *);
53 bool_t (*xdr_u_longlong_t
)(XDR
*, u_longlong_t
*);
55 bool_t (*xdr_opaque
)(XDR
*, caddr_t
, const uint_t
);
56 bool_t (*xdr_string
)(XDR
*, char **, const uint_t
);
57 bool_t (*xdr_array
)(XDR
*, caddr_t
*, uint_t
*, const uint_t
,
58 const uint_t
, const xdrproc_t
);
62 * XDR control operator.
64 #define XDR_GET_BYTES_AVAIL 1
67 bool_t xc_is_last_record
;
71 typedef struct xdr_bytesrec xdr_bytesrec
;
76 void xdrmem_create(XDR
*xdrs
, const caddr_t addr
, const uint_t size
,
77 const enum xdr_op op
);
78 #define xdr_destroy(xdrs) ((void) 0) /* Currently not needed. If needed later,
79 we'll add it to struct xdr_ops */
81 #define xdr_control(xdrs, req, info) (xdrs)->x_ops->xdr_control((xdrs), \
85 * For precaution, the following are defined as static inlines instead of macros
86 * to get some amount of type safety.
88 * Also, macros wouldn't work in the case where typecasting is done, because it
89 * must be possible to reference the functions' addresses by these names.
91 static inline bool_t
xdr_char(XDR
*xdrs
, char *cp
)
93 return xdrs
->x_ops
->xdr_char(xdrs
, cp
);
96 static inline bool_t
xdr_u_short(XDR
*xdrs
, unsigned short *usp
)
98 return xdrs
->x_ops
->xdr_u_short(xdrs
, usp
);
101 static inline bool_t
xdr_short(XDR
*xdrs
, short *sp
)
103 BUILD_BUG_ON(sizeof(short) != 2);
104 return xdrs
->x_ops
->xdr_u_short(xdrs
, (unsigned short *) sp
);
107 static inline bool_t
xdr_u_int(XDR
*xdrs
, unsigned *up
)
109 return xdrs
->x_ops
->xdr_u_int(xdrs
, up
);
112 static inline bool_t
xdr_int(XDR
*xdrs
, int *ip
)
114 BUILD_BUG_ON(sizeof(int) != 4);
115 return xdrs
->x_ops
->xdr_u_int(xdrs
, (unsigned *) ip
);
118 static inline bool_t
xdr_u_longlong_t(XDR
*xdrs
, u_longlong_t
*ullp
)
120 return xdrs
->x_ops
->xdr_u_longlong_t(xdrs
, ullp
);
123 static inline bool_t
xdr_longlong_t(XDR
*xdrs
, longlong_t
*llp
)
125 BUILD_BUG_ON(sizeof(longlong_t
) != 8);
126 return xdrs
->x_ops
->xdr_u_longlong_t(xdrs
, (u_longlong_t
*) llp
);
130 * Fixed-length opaque data.
132 static inline bool_t
xdr_opaque(XDR
*xdrs
, caddr_t cp
, const uint_t cnt
)
134 return xdrs
->x_ops
->xdr_opaque(xdrs
, cp
, cnt
);
138 * Variable-length string.
139 * The *sp buffer must have (maxsize + 1) bytes.
141 static inline bool_t
xdr_string(XDR
*xdrs
, char **sp
, const uint_t maxsize
)
143 return xdrs
->x_ops
->xdr_string(xdrs
, sp
, maxsize
);
147 * Variable-length arrays.
149 static inline bool_t
xdr_array(XDR
*xdrs
, caddr_t
*arrp
, uint_t
*sizep
,
150 const uint_t maxsize
, const uint_t elsize
, const xdrproc_t elproc
)
152 return xdrs
->x_ops
->xdr_array(xdrs
, arrp
, sizep
, maxsize
, elsize
,
156 #endif /* SPL_RPC_XDR_H */