diff options
Diffstat (limited to 'c/src/exec/librpc/src/xdr/xdr_mem.c')
| -rw-r--r-- | c/src/exec/librpc/src/xdr/xdr_mem.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/c/src/exec/librpc/src/xdr/xdr_mem.c b/c/src/exec/librpc/src/xdr/xdr_mem.c index e69de29bb2..0b17afa115 100644 --- a/c/src/exec/librpc/src/xdr/xdr_mem.c +++ b/c/src/exec/librpc/src/xdr/xdr_mem.c @@ -0,0 +1,242 @@ +/* + * 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 *sccsid = "from: @(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/ +/*static char *sccsid = "from: @(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC";*/ +static char *rcsid = "$FreeBSD: src/lib/libc/xdr/xdr_mem.c,v 1.8 1999/08/28 00:02:56 peter Exp $"; +#endif + +/* + * xdr_mem.h, XDR implementation using memory buffers. + * + * Copyright (C) 1984, Sun Microsystems, Inc. + * + * If you have some data to be interpreted as external data representation + * or to be converted to external data representation in a memory buffer, + * then this is the package for you. + * + */ + +#include <string.h> +#include <rpc/types.h> +#include <rpc/xdr.h> +#include <netinet/in.h> + +static bool_t xdrmem_getlong_aligned(); +static bool_t xdrmem_putlong_aligned(); +static bool_t xdrmem_getlong_unaligned(); +static bool_t xdrmem_putlong_unaligned(); +static bool_t xdrmem_getbytes(); +static bool_t xdrmem_putbytes(); +static u_int xdrmem_getpos(); /* XXX w/64-bit pointers, u_int not enough! */ +static bool_t xdrmem_setpos(); +static int32_t *xdrmem_inline_aligned(); +static int32_t *xdrmem_inline_unaligned(); +static void xdrmem_destroy(); + +static struct xdr_ops xdrmem_ops_aligned = { + xdrmem_getlong_aligned, + xdrmem_putlong_aligned, + xdrmem_getbytes, + xdrmem_putbytes, + xdrmem_getpos, + xdrmem_setpos, + xdrmem_inline_aligned, + xdrmem_destroy +}; + +static struct xdr_ops xdrmem_ops_unaligned = { + xdrmem_getlong_unaligned, + xdrmem_putlong_unaligned, + xdrmem_getbytes, + xdrmem_putbytes, + xdrmem_getpos, + xdrmem_setpos, + xdrmem_inline_unaligned, + xdrmem_destroy +}; + +/* + * The procedure xdrmem_create initializes a stream descriptor for a + * memory buffer. + */ +void +xdrmem_create(xdrs, addr, size, op) + register XDR *xdrs; + caddr_t addr; + u_int size; + enum xdr_op op; +{ + + xdrs->x_op = op; + xdrs->x_ops = ((size_t)addr & (sizeof(int32_t) - 1)) + ? &xdrmem_ops_unaligned : &xdrmem_ops_aligned; + xdrs->x_private = xdrs->x_base = addr; + xdrs->x_handy = size; +} + +static void +xdrmem_destroy(/*xdrs*/) + /*XDR *xdrs;*/ +{ + +} + +static bool_t +xdrmem_getlong_aligned(xdrs, lp) + register XDR *xdrs; + long *lp; +{ + + if ((xdrs->x_handy -= sizeof(int32_t)) < 0) + return (FALSE); + *lp = ntohl(*(int32_t *)(xdrs->x_private)); + xdrs->x_private += sizeof(int32_t); + return (TRUE); +} + +static bool_t +xdrmem_putlong_aligned(xdrs, lp) + register XDR *xdrs; + long *lp; +{ + + if ((xdrs->x_handy -= sizeof(int32_t)) < 0) + return (FALSE); + *(int32_t *)xdrs->x_private = htonl(*lp); + xdrs->x_private += sizeof(int32_t); + return (TRUE); +} + +static bool_t +xdrmem_getlong_unaligned(xdrs, lp) + register XDR *xdrs; + long *lp; +{ + int32_t l; + + if ((xdrs->x_handy -= sizeof(int32_t)) < 0) + return (FALSE); + memcpy(&l, xdrs->x_private, sizeof(int32_t)); + *lp = ntohl(l); + xdrs->x_private += sizeof(int32_t); + return (TRUE); +} + +static bool_t +xdrmem_putlong_unaligned(xdrs, lp) + register XDR *xdrs; + long *lp; +{ + int32_t l; + + if ((xdrs->x_handy -= sizeof(int32_t)) < 0) + return (FALSE); + l = htonl(*lp); + memcpy(xdrs->x_private, &l, sizeof(int32_t)); + xdrs->x_private += sizeof(int32_t); + return (TRUE); +} + +static bool_t +xdrmem_getbytes(xdrs, addr, len) + register XDR *xdrs; + caddr_t addr; + register u_int len; +{ + + if ((xdrs->x_handy -= len) < 0) + return (FALSE); + memcpy(addr, xdrs->x_private, len); + xdrs->x_private += len; + return (TRUE); +} + +static bool_t +xdrmem_putbytes(xdrs, addr, len) + register XDR *xdrs; + caddr_t addr; + register u_int len; +{ + + if ((xdrs->x_handy -= len) < 0) + return (FALSE); + memcpy(xdrs->x_private, addr, len); + xdrs->x_private += len; + return (TRUE); +} + +static u_int +xdrmem_getpos(xdrs) + register XDR *xdrs; +{ + + /* XXX w/64-bit pointers, u_int not enough! */ + return ((u_long)xdrs->x_private - (u_long)xdrs->x_base); +} + +static bool_t +xdrmem_setpos(xdrs, pos) + register XDR *xdrs; + u_int pos; +{ + register caddr_t newaddr = xdrs->x_base + pos; + register caddr_t lastaddr = xdrs->x_private + xdrs->x_handy; + + if ((long)newaddr > (long)lastaddr) + return (FALSE); + xdrs->x_private = newaddr; + xdrs->x_handy = (long)lastaddr - (long)newaddr; + return (TRUE); +} + +static int32_t * +xdrmem_inline_aligned(xdrs, len) + register XDR *xdrs; + int len; +{ + int32_t *buf = 0; + + if (xdrs->x_handy >= len) { + xdrs->x_handy -= len; + buf = (int32_t *) xdrs->x_private; + xdrs->x_private += len; + } + return (buf); +} + +static int32_t * +xdrmem_inline_unaligned(xdrs, len) + register XDR *xdrs; + int len; +{ + + return (0); +} |