3 * ===================================
4 * HARP | Host ATM Research Platform
5 * ===================================
8 * This Host ATM Research Platform ("HARP") file (the "Software") is
9 * made available by Network Computing Services, Inc. ("NetworkCS")
10 * "AS IS". NetworkCS does not provide maintenance, improvements or
11 * support of any kind.
13 * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
14 * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
15 * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
16 * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
17 * In no event shall NetworkCS be responsible for any damages, including
18 * but not limited to consequential damages, arising from or relating to
19 * any use of the Software or related support.
21 * Copyright 1994-1998 Network Computing Services, Inc.
23 * Copies of this Software may be made, however, the above copyright
24 * notice must be reproduced on all copies.
26 * @(#) $FreeBSD: src/sys/netatm/spans/spans_kxdr.c,v 1.3 1999/08/28 00:48:50 peter Exp $
27 * @(#) $DragonFly: src/sys/netproto/atm/spans/spans_kxdr.c,v 1.9 2008/10/28 17:23:46 swildner Exp $
31 * SPANS Signalling Manager
32 * ---------------------------
34 * Kernel XDR (External Data Representation) routines
38 #include <netproto/atm/kern_include.h>
41 * This file contains code that has been copied and/or modified from
42 * the following FreeBSD files:
44 * /usr/src/lib/libc/xdr/xdr.c
45 * /usr/src/lib/libc/xdr/xdr_mem.c
47 * which are covered by the copyright notice below.
51 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
52 * unrestricted use provided that this legend is included on all tape
53 * media and as a part of the software program in whole or part. Users
54 * may copy or modify Sun RPC without charge, but are not authorized
55 * to license or distribute it to anyone else except as part of a product or
56 * program developed by the user.
58 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
59 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
60 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
62 * Sun RPC is provided with no support and without any obligation on the
63 * part of Sun Microsystems, Inc. to assist in its use, correction,
64 * modification or enhancement.
66 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
67 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
68 * OR ANY PART THEREOF.
70 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
71 * or profits or other special, indirect and consequential damages, even if
72 * Sun has been advised of the possibility of such damages.
74 * Sun Microsystems, Inc.
76 * Mountain View, California 94043
80 * xdr.c, Generic XDR routines implementation.
82 * Copyright (C) 1986, Sun Microsystems, Inc.
84 * These are the "generic" xdr routines used to serialize and de-serialize
85 * most common data items. See xdr.h for more info on the interface to
89 #include <netproto/atm/spans/spans_kxdr.h>
92 * constants specific to the xdr "protocol"
94 #define XDR_FALSE ((long) 0)
95 #define XDR_TRUE ((long) 1)
96 #define LASTUNSIGNED ((u_int) 0-1)
101 static char xdr_zero[BYTES_PER_XDR_UNIT] = { 0, 0, 0, 0 };
107 xdr_int(XDR *xdrs, int *ip)
111 (xdr_short(xdrs, (short *)ip));
112 return (xdr_long(xdrs, (long *)ip));
114 if (sizeof (int) == sizeof (long)) {
115 return (xdr_long(xdrs, (long *)ip));
117 return (xdr_short(xdrs, (short *)ip));
123 * XDR unsigned integers
126 xdr_u_int(XDR *xdrs, u_int *up)
130 (xdr_short(xdrs, (short *)up));
131 return (xdr_u_long(xdrs, (u_long *)up));
133 if (sizeof (u_int) == sizeof (u_long)) {
134 return (xdr_u_long(xdrs, (u_long *)up));
136 return (xdr_short(xdrs, (short *)up));
143 * same as xdr_u_long - open coded to save a proc call!
146 xdr_long(XDR *xdrs, long *lp)
149 if (xdrs->x_op == XDR_ENCODE)
150 return (XDR_PUTLONG(xdrs, lp));
152 if (xdrs->x_op == XDR_DECODE)
153 return (XDR_GETLONG(xdrs, lp));
155 if (xdrs->x_op == XDR_FREE)
162 * XDR unsigned long integers
163 * same as xdr_long - open coded to save a proc call!
166 xdr_u_long(XDR *xdrs, u_long *ulp)
169 if (xdrs->x_op == XDR_DECODE)
170 return (XDR_GETLONG(xdrs, (long *)ulp));
171 if (xdrs->x_op == XDR_ENCODE)
172 return (XDR_PUTLONG(xdrs, (long *)ulp));
173 if (xdrs->x_op == XDR_FREE)
182 xdr_short(XDR *xdrs, short *sp)
186 switch (xdrs->x_op) {
190 return (XDR_PUTLONG(xdrs, &l));
193 if (!XDR_GETLONG(xdrs, &l)) {
206 * XDR unsigned short integers
209 xdr_u_short(XDR *xdrs, u_short *usp)
213 switch (xdrs->x_op) {
217 return (XDR_PUTLONG(xdrs, &l));
220 if (!XDR_GETLONG(xdrs, &l)) {
237 xdr_char(XDR *xdrs, char *cp)
242 if (!xdr_int(xdrs, &i)) {
250 * XDR an unsigned char
253 xdr_u_char(XDR *xdrs, u_char *cp)
258 if (!xdr_u_int(xdrs, &u)) {
269 xdr_bool(XDR *xdrs, bool_t *bp)
273 switch (xdrs->x_op) {
276 lb = *bp ? XDR_TRUE : XDR_FALSE;
277 return (XDR_PUTLONG(xdrs, &lb));
280 if (!XDR_GETLONG(xdrs, &lb)) {
283 *bp = (lb == XDR_FALSE) ? FALSE : TRUE;
296 xdr_enum(XDR *xdrs, enum_t *ep)
299 enum sizecheck { SIZEVAL }; /* used to find the size of an enum */
302 * enums are treated as ints
304 if (sizeof (enum sizecheck) == sizeof (long)) {
305 return (xdr_long(xdrs, (long *)ep));
306 } else if (sizeof (enum sizecheck) == sizeof (short)) {
307 return (xdr_short(xdrs, (short *)ep));
312 (xdr_short(xdrs, (short *)ep));
313 return (xdr_long(xdrs, (long *)ep));
319 * Allows the specification of a fixed size sequence of opaque bytes.
320 * cp points to the opaque object and cnt gives the byte length.
323 xdr_opaque(XDR *xdrs, caddr_t cp, u_int cnt)
326 static char crud[BYTES_PER_XDR_UNIT];
329 * if no data we are done
335 * round byte count to full xdr units
337 rndup = cnt % BYTES_PER_XDR_UNIT;
339 rndup = BYTES_PER_XDR_UNIT - rndup;
341 if (xdrs->x_op == XDR_DECODE) {
342 if (!XDR_GETBYTES(xdrs, cp, cnt)) {
347 return (XDR_GETBYTES(xdrs, crud, rndup));
350 if (xdrs->x_op == XDR_ENCODE) {
351 if (!XDR_PUTBYTES(xdrs, cp, cnt)) {
356 return (XDR_PUTBYTES(xdrs, xdr_zero, rndup));
359 if (xdrs->x_op == XDR_FREE) {
368 * XDR implementation using kernel buffers
372 * xdr_mem.h, XDR implementation using memory buffers.
374 * Copyright (C) 1984, Sun Microsystems, Inc.
376 * If you have some data to be interpreted as external data representation
377 * or to be converted to external data representation in a memory buffer,
378 * then this is the package for you.
383 void xdrmbuf_init (XDR *, KBuffer *, enum xdr_op);
384 static bool_t xdrmbuf_getlong (XDR *, long *);
385 static bool_t xdrmbuf_putlong (XDR *, long *);
386 static bool_t xdrmbuf_getbytes (XDR *, caddr_t, u_int);
387 static bool_t xdrmbuf_putbytes (XDR *, caddr_t, u_int);
388 static u_int xdrmbuf_getpos (XDR *);
390 static struct xdr_ops xdrmbuf_ops = {
402 * The procedure xdrmbuf_init initializes a stream descriptor for a
406 xdrmbuf_init(XDR *xdrs, KBuffer *m, enum xdr_op op)
410 xdrs->x_ops = &xdrmbuf_ops;
411 xdrs->x_base = (caddr_t)m;
412 KB_DATASTART(m, xdrs->x_private, caddr_t);
413 xdrs->x_handy = KB_LEN(m);
417 xdrmbuf_getlong(XDR *xdrs, long *lp)
421 * See if long is contained in this buffer
423 if ((xdrs->x_handy -= sizeof(long)) < 0) {
427 * We (currently) don't allow a long to span a buffer
429 if (xdrs->x_handy != -sizeof(long)) {
430 kprintf("xdrmbuf_getlong: data spans buffers\n");
435 * Try to move to a chained buffer
437 if ((m = (KBuffer *)(xdrs->x_base)) != NULL) {
439 xdrs->x_base = (caddr_t)m;
443 * Setup new buffer's info
445 KB_DATASTART(m, xdrs->x_private, caddr_t);
446 if ((xdrs->x_handy = KB_LEN(m) - sizeof(long)) < 0) {
447 kprintf("xdrmbuf_getlong: short buffer\n");
459 * Return the long value
461 *lp = (long)ntohl((u_long)(*((long *)(xdrs->x_private))));
464 * Advance the data stream
466 xdrs->x_private = (char *)xdrs->x_private + sizeof(long);
471 xdrmbuf_putlong(XDR *xdrs, long *lp)
475 * See if long will fit in this buffer
477 if ((xdrs->x_handy -= sizeof(long)) < 0) {
481 * We (currently) don't allow a long to span a buffer
483 if (xdrs->x_handy != -sizeof(long)) {
484 kprintf("xdrmbuf_putlong: data spans buffers\n");
489 * Try to move to a chained buffer
491 if ((m = (KBuffer *)(xdrs->x_base)) != NULL) {
493 xdrs->x_base = (caddr_t)m;
497 * Setup new buffer's info
499 KB_DATASTART(m, xdrs->x_private, caddr_t);
500 if ((xdrs->x_handy = KB_LEN(m) - sizeof(long)) < 0) {
501 kprintf("xdrmbuf_putlong: short buffer\n");
513 * Store the long value into our buffer
515 *(long *)xdrs->x_private = (long)htonl((u_long)(*lp));
518 * Advance the data stream
520 xdrs->x_private = (char *)xdrs->x_private + sizeof(long);
525 xdrmbuf_getbytes(XDR *xdrs, caddr_t addr, u_int len)
531 if (xdrs->x_handy <= 0) {
535 * No data in current buffer, move to a chained buffer
537 if ((m = (KBuffer *)(xdrs->x_base)) != NULL) {
539 xdrs->x_base = (caddr_t)m;
543 * Setup new buffer's info
545 KB_DATASTART(m, xdrs->x_private, caddr_t);
546 xdrs->x_handy = KB_LEN(m);
556 * Copy from buffer to user's space
558 copy = MIN(len, xdrs->x_handy);
559 KM_COPY(xdrs->x_private, addr, copy);
562 * Update data stream controls
564 xdrs->x_private = (char *)xdrs->x_private + copy;
565 xdrs->x_handy -= copy;
573 xdrmbuf_putbytes(XDR *xdrs, caddr_t addr, u_int len)
579 if (xdrs->x_handy <= 0) {
583 * No data in current buffer, move to a chained buffer
585 if ((m = (KBuffer *)(xdrs->x_base)) != NULL) {
587 xdrs->x_base = (caddr_t)m;
591 * Setup new buffer's info
593 KB_DATASTART(m, xdrs->x_private, caddr_t);
594 xdrs->x_handy = KB_LEN(m);
604 * Copy from user's space into buffer
606 copy = MIN(len, xdrs->x_handy);
607 KM_COPY(addr, xdrs->x_private, copy);
610 * Update data stream controls
612 xdrs->x_private = (char *)xdrs->x_private + copy;
613 xdrs->x_handy -= copy;
621 xdrmbuf_getpos(XDR *xdrs)
624 return ((u_int)xdrs->x_private - (u_int)xdrs->x_base);