2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
11 * xdr_rx.c. XDR using RX.
14 #include <afsconfig.h>
16 #include "afs/param.h"
18 #include <afs/param.h>
23 #include "afs/sysincludes.h"
28 #include <net/net_globals.h>
29 #endif /* AFS_OSF_ENV */
30 #ifdef AFS_LINUX20_ENV
33 #include "rpc/types.h"
41 #endif /* AFS_OSF_ENV */
42 #ifdef AFS_LINUX22_ENV
44 #define quad_t __quad_t
45 #define u_quad_t __u_quad_t
49 #include "netinet/in.h"
51 #include "rpc/types.h"
57 #include <sys/types.h>
60 #include <netinet/in.h>
67 * This section should really go in the param.*.h files.
71 * kernel version needs to agree with <rpc/xdr.h>
72 * except on Linux which does XDR differently from everyone else
74 # if defined(AFS_LINUX20_ENV) && !defined(UKERNEL)
75 # define AFS_XDRS_T void *
77 # define AFS_XDRS_T XDR *
79 # if defined(AFS_SUN57_ENV)
80 # define AFS_RPC_INLINE_T rpc_inline_t
81 # elif defined(AFS_DUX40_ENV)
82 # define AFS_RPC_INLINE_T int
83 # elif defined(AFS_LINUX20_ENV) && !defined(UKERNEL)
84 # define AFS_RPC_INLINE_T afs_int32
85 # elif defined(AFS_LINUX20_ENV)
86 # define AFS_RPC_INLINE_T int32_t *
88 # define AFS_RPC_INLINE_T long
92 * user version needs to agree with "xdr.h", i.e. <rx/xdr.h>
94 # define AFS_XDRS_T void *
95 # define AFS_RPC_INLINE_T afs_int32
98 /* Static prototypes */
99 #if (defined(AFS_SGI61_ENV) && (_MIPS_SZLONG != _MIPS_SZINT)) || defined(AFS_HPUX_64BIT_ENV)
100 static bool_t xdrrx_getint64(AFS_XDRS_T axdrs, long *lp);
101 static bool_t xdrrx_putint64(AFS_XDRS_T axdrs, long *lp);
102 #endif /* (defined(AFS_SGI61_ENV) && (_MIPS_SZLONG != _MIPS_SZINT)) || defined(AFS_HPUX_64BIT_ENV) */
104 static bool_t xdrrx_getint32(AFS_XDRS_T axdrs, afs_int32 * lp);
105 static bool_t xdrrx_putint32(AFS_XDRS_T axdrs, afs_int32 * lp);
106 static bool_t xdrrx_getbytes(AFS_XDRS_T axdrs, caddr_t addr,
108 static bool_t xdrrx_putbytes(AFS_XDRS_T axdrs, caddr_t addr,
110 static AFS_RPC_INLINE_T *xdrrx_inline(AFS_XDRS_T axdrs, u_int len);
114 * Ops vector for stdio type XDR
116 static struct xdr_ops xdrrx_ops = {
117 #if defined(KERNEL) && ((defined(AFS_SGI61_ENV) && (_MIPS_SZLONG != _MIPS_SZINT)) || defined(AFS_HPUX_64BIT_ENV))
118 .x_getint64 = xdrrx_getint64,
119 .x_putint64 = xdrrx_putint64,
120 #endif /* defined(KERNEL) && ((defined(AFS_SGI61_ENV) && (_MIPS_SZLONG != _MIPS_SZINT)) || defined(AFS_HPUX_64BIT_ENV)) */
122 .x_getlong = xdrrx_getint32,
123 .x_putlong = xdrrx_putint32,
124 #elif !(defined(KERNEL) && defined(AFS_SUN57_ENV))
125 .x_getint32 = xdrrx_getint32, /* deserialize an afs_int32 */
126 .x_putint32 = xdrrx_putint32, /* serialize an afs_int32 */
128 .x_getbytes = xdrrx_getbytes, /* deserialize counted bytes */
129 .x_putbytes = xdrrx_putbytes, /* serialize counted bytes */
130 .x_getpostn = NULL, /* get offset in the stream: not supported. */
131 .x_setpostn = NULL, /* set offset in the stream: not supported. */
132 .x_inline = xdrrx_inline, /* prime stream for inline macros */
133 .x_destroy = NULL, /* destroy stream */
134 #if defined(KERNEL) && defined(AFS_SUN57_ENV)
136 .x_getint32 = xdrrx_getint32, /* deserialize an afs_int32 */
137 .x_putint32 = xdrrx_putint32, /* serialize an afs_int32 */
142 * Initialize an rx xdr handle, for a given rx call. op must be XDR_ENCODE or XDR_DECODE.
143 * Call must have been returned by rx_MakeCall or rx_GetCall.
146 xdrrx_create(XDR * xdrs, struct rx_call *call,
150 xdrs->x_ops = &xdrrx_ops;
151 xdrs->x_private = (caddr_t) call;
154 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
155 #define STACK_TO_PIN 2*PAGESIZE /* 8K */
156 int rx_pin_failed = 0;
159 #if (defined(AFS_SGI61_ENV) && (_MIPS_SZLONG != _MIPS_SZINT)) || defined(AFS_HPUX_64BIT_ENV)
161 xdrrx_getint64(AFS_XDRS_T axdrs, long *lp)
163 XDR * xdrs = (XDR *)axdrs;
164 struct rx_call *call = ((struct rx_call *)(xdrs)->x_private);
167 if (rx_Read32(call, &i) == sizeof(i)) {
175 xdrrx_putint64(AFS_XDRS_T axdrs, long *lp)
177 XDR * xdrs = (XDR *)axdrs;
178 afs_int32 code, i = htonl(*lp);
179 struct rx_call *call = ((struct rx_call *)(xdrs)->x_private);
181 code = (rx_Write32(call, &i) == sizeof(i));
184 #endif /* (defined(AFS_SGI61_ENV) && (_MIPS_SZLONG != _MIPS_SZINT)) || defined(AFS_HPUX_64BIT_ENV) */
187 xdrrx_getint32(AFS_XDRS_T axdrs, afs_int32 * lp)
190 XDR * xdrs = (XDR *)axdrs;
191 struct rx_call *call = ((struct rx_call *)(xdrs)->x_private);
192 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
193 char *saddr = (char *)&l;
194 saddr -= STACK_TO_PIN;
196 * Hack of hacks: Aix3.2 only guarantees that the next 2K of stack in pinned. Under
197 * splnet (disables interrupts), which is set throughout rx, we can't swap in stack
198 * pages if we need so we panic. Since sometimes, under splnet, we'll use more than
199 * 2K stack we could try to bring the next few stack pages in here before we call the rx
200 * layer. Of course this doesn't guarantee that those stack pages won't be swapped
201 * out between here and calling splnet. So we now pin (and unpin) them instead to
202 * guarantee that they remain there.
204 if (pin(saddr, STACK_TO_PIN)) {
205 /* XXX There's little we can do by continue XXX */
210 if (rx_Read32(call, &l) == sizeof(l)) {
212 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
214 unpin(saddr, STACK_TO_PIN);
218 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
220 unpin(saddr, STACK_TO_PIN);
226 xdrrx_putint32(AFS_XDRS_T axdrs, afs_int32 * lp)
228 afs_int32 code, l = htonl(*lp);
229 XDR * xdrs = (XDR *)axdrs;
230 struct rx_call *call = ((struct rx_call *)(xdrs)->x_private);
231 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
232 char *saddr = (char *)&code;
233 saddr -= STACK_TO_PIN;
235 * Hack of hacks: Aix3.2 only guarantees that the next 2K of stack in pinned. Under
236 * splnet (disables interrupts), which is set throughout rx, we can't swap in stack
237 * pages if we need so we panic. Since sometimes, under splnet, we'll use more than
238 * 2K stack we could try to bring the next few stack pages in here before we call the rx
239 * layer. Of course this doesn't guarantee that those stack pages won't be swapped
240 * out between here and calling splnet. So we now pin (and unpin) them instead to
241 * guarantee that they remain there.
243 if (pin(saddr, STACK_TO_PIN)) {
248 code = (rx_Write32(call, &l) == sizeof(l));
249 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
251 unpin(saddr, STACK_TO_PIN);
257 xdrrx_getbytes(AFS_XDRS_T axdrs, caddr_t addr, u_int len)
260 XDR * xdrs = (XDR *)axdrs;
261 struct rx_call *call = ((struct rx_call *)(xdrs)->x_private);
262 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
263 char *saddr = (char *)&code;
264 saddr -= STACK_TO_PIN;
266 * Hack of hacks: Aix3.2 only guarantees that the next 2K of stack in pinned. Under
267 * splnet (disables interrupts), which is set throughout rx, we can't swap in stack
268 * pages if we need so we panic. Since sometimes, under splnet, we'll use more than
269 * 2K stack we could try to bring the next few stack pages in here before we call the rx
270 * layer. Of course this doesn't guarantee that those stack pages won't be swapped
271 * out between here and calling splnet. So we now pin (and unpin) them instead to
272 * guarantee that they remain there.
274 if (pin(saddr, STACK_TO_PIN)) {
275 /* XXX There's little we can do by continue XXX */
280 code = (rx_Read(call, addr, len) == len);
281 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
283 unpin(saddr, STACK_TO_PIN);
289 xdrrx_putbytes(AFS_XDRS_T axdrs, caddr_t addr, u_int len)
292 XDR * xdrs = (XDR *)axdrs;
293 struct rx_call *call = ((struct rx_call *)(xdrs)->x_private);
294 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
295 char *saddr = (char *)&code;
296 saddr -= STACK_TO_PIN;
298 * Hack of hacks: Aix3.2 only guarantees that the next 2K of stack in pinned. Under
299 * splnet (disables interrupts), which is set throughout rx, we can't swap in stack
300 * pages if we need so we panic. Since sometimes, under splnet, we'll use more than
301 * 2K stack we could try to bring the next few stack pages in here before we call the rx
302 * layer. Of course this doesn't guarantee that those stack pages won't be swapped
303 * out between here and calling splnet. So we now pin (and unpin) them instead to
304 * guarantee that they remain there.
306 if (pin(saddr, STACK_TO_PIN)) {
307 /* XXX There's little we can do by continue XXX */
312 code = (rx_Write(call, addr, len) == len);
313 #if defined(KERNEL) && defined(AFS_AIX32_ENV)
315 unpin(saddr, STACK_TO_PIN);
320 #ifdef undef /* not used */
322 xdrrx_getpos(XDR * xdrs)
324 /* Not supported. What error code should we return? (It doesn't matter: it will never be called, anyway!) */
329 xdrrx_setpos(XDR * xdrs, u_int pos)
336 static AFS_RPC_INLINE_T *
337 xdrrx_inline(AFS_XDRS_T axdrs, u_int len)
339 /* I don't know what this routine is supposed to do, but the stdio module returns null, so we will, too */