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716154c592
Updated AUTHORS, COPYING, DISCLAIMER, and INSTALL files. Added standardized headers to all source file to clearly indicate the copyright, license, and to give credit where credit is due.
156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/*****************************************************************************\
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* Copyright (c) 2008 Sun Microsystems, Inc.
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* Written by Ricardo Correia <Ricardo.M.Correia@Sun.COM>
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*
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* This file is part of the SPL, Solaris Porting Layer.
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* For details, see <http://github.com/behlendorf/spl/>.
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*
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* The SPL is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* The SPL is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with the SPL. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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#ifndef _SPL_RPC_XDR_H
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#define _SPL_RPC_XDR_H
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#include <sys/types.h>
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#include <rpc/types.h>
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/*
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* XDR enums and types.
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*/
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enum xdr_op {
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XDR_ENCODE,
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XDR_DECODE
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};
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struct xdr_ops;
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typedef struct {
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struct xdr_ops *x_ops; /* Also used to let caller know if
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xdrmem_create() succeeds (sigh..) */
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caddr_t x_addr; /* Current buffer addr */
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caddr_t x_addr_end; /* End of the buffer */
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enum xdr_op x_op; /* Stream direction */
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} XDR;
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typedef bool_t (*xdrproc_t)(XDR *xdrs, void *ptr);
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struct xdr_ops {
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bool_t (*xdr_control)(XDR *, int, void *);
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bool_t (*xdr_char)(XDR *, char *);
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bool_t (*xdr_u_short)(XDR *, unsigned short *);
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bool_t (*xdr_u_int)(XDR *, unsigned *);
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bool_t (*xdr_u_longlong_t)(XDR *, u_longlong_t *);
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bool_t (*xdr_opaque)(XDR *, caddr_t, const uint_t);
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bool_t (*xdr_string)(XDR *, char **, const uint_t);
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bool_t (*xdr_array)(XDR *, caddr_t *, uint_t *, const uint_t,
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const uint_t, const xdrproc_t);
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};
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/*
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* XDR control operator.
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*/
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#define XDR_GET_BYTES_AVAIL 1
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struct xdr_bytesrec {
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bool_t xc_is_last_record;
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size_t xc_num_avail;
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};
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/*
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* XDR functions.
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*/
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void xdrmem_create(XDR *xdrs, const caddr_t addr, const uint_t size,
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const enum xdr_op op);
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#define xdr_destroy(xdrs) ((void) 0) /* Currently not needed. If needed later,
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we'll add it to struct xdr_ops */
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#define xdr_control(xdrs, req, info) (xdrs)->x_ops->xdr_control((xdrs), \
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(req), (info))
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/*
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* For precaution, the following are defined as static inlines instead of macros
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* to get some amount of type safety.
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*
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* Also, macros wouldn't work in the case where typecasting is done, because it
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* must be possible to reference the functions' addresses by these names.
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*/
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static inline bool_t xdr_char(XDR *xdrs, char *cp)
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{
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return xdrs->x_ops->xdr_char(xdrs, cp);
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}
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static inline bool_t xdr_u_short(XDR *xdrs, unsigned short *usp)
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{
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return xdrs->x_ops->xdr_u_short(xdrs, usp);
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}
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static inline bool_t xdr_short(XDR *xdrs, short *sp)
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{
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BUILD_BUG_ON(sizeof(short) != 2);
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return xdrs->x_ops->xdr_u_short(xdrs, (unsigned short *) sp);
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}
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static inline bool_t xdr_u_int(XDR *xdrs, unsigned *up)
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{
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return xdrs->x_ops->xdr_u_int(xdrs, up);
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}
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static inline bool_t xdr_int(XDR *xdrs, int *ip)
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{
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BUILD_BUG_ON(sizeof(int) != 4);
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return xdrs->x_ops->xdr_u_int(xdrs, (unsigned *) ip);
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}
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static inline bool_t xdr_u_longlong_t(XDR *xdrs, u_longlong_t *ullp)
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{
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return xdrs->x_ops->xdr_u_longlong_t(xdrs, ullp);
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}
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static inline bool_t xdr_longlong_t(XDR *xdrs, longlong_t *llp)
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{
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BUILD_BUG_ON(sizeof(longlong_t) != 8);
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return xdrs->x_ops->xdr_u_longlong_t(xdrs, (u_longlong_t *) llp);
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}
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/*
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* Fixed-length opaque data.
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*/
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static inline bool_t xdr_opaque(XDR *xdrs, caddr_t cp, const uint_t cnt)
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{
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return xdrs->x_ops->xdr_opaque(xdrs, cp, cnt);
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}
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/*
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* Variable-length string.
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* The *sp buffer must have (maxsize + 1) bytes.
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*/
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static inline bool_t xdr_string(XDR *xdrs, char **sp, const uint_t maxsize)
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{
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return xdrs->x_ops->xdr_string(xdrs, sp, maxsize);
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}
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/*
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* Variable-length arrays.
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*/
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static inline bool_t xdr_array(XDR *xdrs, caddr_t *arrp, uint_t *sizep,
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const uint_t maxsize, const uint_t elsize, const xdrproc_t elproc)
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{
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return xdrs->x_ops->xdr_array(xdrs, arrp, sizep, maxsize, elsize,
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elproc);
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}
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#endif /* SPL_RPC_XDR_H */
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