diff options
Diffstat (limited to 'cpukit/librpc/src/xdr/xdr_mem.c')
-rw-r--r-- | cpukit/librpc/src/xdr/xdr_mem.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/cpukit/librpc/src/xdr/xdr_mem.c b/cpukit/librpc/src/xdr/xdr_mem.c new file mode 100644 index 0000000000..5b30419d7a --- /dev/null +++ b/cpukit/librpc/src/xdr/xdr_mem.c @@ -0,0 +1,245 @@ +/* + * 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. + * + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <string.h> +#include <rpc/types.h> +#include <rpc/xdr.h> +#include <netinet/in.h> + +static bool_t xdrmem_getlong_aligned(XDR *xdrs, long *lp); +static bool_t xdrmem_putlong_aligned(XDR *xdrs, const long *lp); +static bool_t xdrmem_getlong_unaligned(XDR *xdrs, long *lp); +static bool_t xdrmem_putlong_unaligned(XDR *xdrs, const long *lp); +static bool_t xdrmem_getbytes(XDR *xdrs, caddr_t addr, u_int len); +static bool_t xdrmem_putbytes(XDR *xdrs, const char *addr, u_int len); +static u_int xdrmem_getpos(XDR *xdrs); /* XXX w/64-bit pointers, u_int not enough! */ +static bool_t xdrmem_setpos(XDR *xdrs, u_int pos); +static int32_t *xdrmem_inline_aligned(XDR *xdrs, u_int len); +static int32_t *xdrmem_inline_unaligned(XDR *xdrs, u_int len); +static void xdrmem_destroy(XDR *); + +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( + XDR *xdrs, + char * addr, + u_int size, + enum xdr_op op) +{ + + xdrs->x_op = op; + xdrs->x_ops = ((uintptr_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(XDR *xdrs) +{ + +} + +static bool_t +xdrmem_getlong_aligned( + 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( + XDR *xdrs, + const 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( + 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( + XDR *xdrs, + const 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( + XDR *xdrs, + caddr_t addr, + 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( + XDR *xdrs, + const char *addr, + 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( + XDR *xdrs) +{ + + /* XXX w/64-bit pointers, u_int not enough! */ + return ((uintptr_t)xdrs->x_private - (uintptr_t)xdrs->x_base); +} + +static bool_t +xdrmem_setpos( + XDR *xdrs, + u_int pos) +{ + void *newaddr = xdrs->x_base + pos; + void *lastaddr = xdrs->x_private + xdrs->x_handy; + + if (newaddr > lastaddr) + return (FALSE); + xdrs->x_private = newaddr; + xdrs->x_handy = (intptr_t)lastaddr - (intptr_t)newaddr; + return (TRUE); +} + +static int32_t * +xdrmem_inline_aligned( + XDR *xdrs, + u_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( + XDR *xdrs, + u_int len) +{ + + return (0); +} |