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xdr.c
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xdr_array.c
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xdr_mbuf.c
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xdr_mem.c
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xdr_reference.c
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xdr_sizeof.c
(3.63 KB)
Editing: xdr_reference.c
/* $NetBSD: xdr_reference.c,v 1.13 2000/01/22 22:19:18 mycroft Exp $ */ /* * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape * media and as a part of the software program in whole or part. Users * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user. * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 */ #if defined(LIBC_SCCS) && !defined(lint) static char *sccsid2 = "@(#)xdr_reference.c 1.11 87/08/11 SMI"; static char *sccsid = "@(#)xdr_reference.c 2.1 88/07/29 4.0 RPCSRC"; #endif #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); /* * xdr_reference.c, Generic XDR routines implementation. * * Copyright (C) 1987, Sun Microsystems, Inc. * * These are the "non-trivial" xdr primitives used to serialize and de-serialize * "pointers". See xdr.h for more info on the interface to xdr. */ #include <sys/param.h> #include <sys/systm.h> #include <sys/malloc.h> #include <rpc/types.h> #include <rpc/xdr.h> /* * XDR an indirect pointer * xdr_reference is for recursively translating a structure that is * referenced by a pointer inside the structure that is currently being * translated. pp references a pointer to storage. If *pp is null * the necessary storage is allocated. * size is the sizeof the referneced structure. * proc is the routine to handle the referenced structure. */ bool_t xdr_reference(XDR *xdrs, caddr_t *pp, /* the pointer to work on */ u_int size, /* size of the object pointed to */ xdrproc_t proc) /* xdr routine to handle the object */ { caddr_t loc = *pp; bool_t stat; if (loc == NULL) switch (xdrs->x_op) { case XDR_FREE: return (TRUE); case XDR_DECODE: *pp = loc = (caddr_t) mem_alloc(size); if (loc == NULL) { printf("xdr_reference: out of memory"); return (FALSE); } memset(loc, 0, size); break; case XDR_ENCODE: break; } stat = (*proc)(xdrs, loc); if (xdrs->x_op == XDR_FREE) { mem_free(loc, size); *pp = NULL; } return (stat); } /* * xdr_pointer(): * * XDR a pointer to a possibly recursive data structure. This * differs with xdr_reference in that it can serialize/deserialiaze * trees correctly. * * What's sent is actually a union: * * union object_pointer switch (boolean b) { * case TRUE: object_data data; * case FALSE: void nothing; * } * * > objpp: Pointer to the pointer to the object. * > obj_size: size of the object. * > xdr_obj: routine to XDR an object. * */ bool_t xdr_pointer(XDR *xdrs, char **objpp, u_int obj_size, xdrproc_t xdr_obj) { bool_t more_data; more_data = (*objpp != NULL); if (! xdr_bool(xdrs,&more_data)) { return (FALSE); } if (! more_data) { *objpp = NULL; return (TRUE); } return (xdr_reference(xdrs,objpp,obj_size,xdr_obj)); }
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