1 /*
2 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
3 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "defs.h"
30 #if defined HAVE_POLL_H
31 # include <poll.h>
32 #elif defined HAVE_SYS_POLL_H
33 # include <sys/poll.h>
34 #endif
35 #ifdef HAVE_SYS_CONF_H
36 # include <sys/conf.h>
37 #endif
38
39 /* Who has STREAMS syscalls?
40 * Linux hasn't. Solaris has (had?).
41 * Just in case I miss something, retain in for Sparc...
42 */
43 #if defined(SPARC) || defined(SPARC64)
44
45 # ifdef HAVE_STROPTS_H
46 # include <stropts.h>
47 # else
48 # define RS_HIPRI 1
49 struct strbuf {
50 int maxlen; /* no. of bytes in buffer */
51 int len; /* no. of bytes returned */
52 const char *buf; /* pointer to data */
53 };
54 # define MORECTL 1
55 # define MOREDATA 2
56 # endif
57
58 #include "xlat/msgflags.h"
59
60 static void
printstrbuf(struct tcb * tcp,struct strbuf * sbp,int getting)61 printstrbuf(struct tcb *tcp, struct strbuf *sbp, int getting)
62 {
63 if (sbp->maxlen == -1 && getting)
64 tprints("{maxlen=-1}");
65 else {
66 tprints("{");
67 if (getting)
68 tprintf("maxlen=%d, ", sbp->maxlen);
69 tprintf("len=%d, buf=", sbp->len);
70 printstr(tcp, (unsigned long) sbp->buf, sbp->len);
71 tprints("}");
72 }
73 }
74
75 static void
printstrbufarg(struct tcb * tcp,long arg,int getting)76 printstrbufarg(struct tcb *tcp, long arg, int getting)
77 {
78 struct strbuf buf;
79
80 if (arg == 0)
81 tprints("NULL");
82 else if (umove(tcp, arg, &buf) < 0)
83 tprints("{...}");
84 else
85 printstrbuf(tcp, &buf, getting);
86 tprints(", ");
87 }
88
SYS_FUNC(putmsg)89 SYS_FUNC(putmsg)
90 {
91 int i;
92
93 if (entering(tcp)) {
94 /* fd */
95 tprintf("%ld, ", tcp->u_arg[0]);
96 /* control and data */
97 for (i = 1; i < 3; i++)
98 printstrbufarg(tcp, tcp->u_arg[i], 0);
99 /* flags */
100 printflags(msgflags, tcp->u_arg[3], "RS_???");
101 }
102 return 0;
103 }
104
SYS_FUNC(getmsg)105 SYS_FUNC(getmsg)
106 {
107 int i, flags;
108
109 if (entering(tcp)) {
110 /* fd */
111 tprintf("%lu, ", tcp->u_arg[0]);
112 } else {
113 if (syserror(tcp)) {
114 tprintf("%#lx, %#lx, %#lx",
115 tcp->u_arg[1], tcp->u_arg[2], tcp->u_arg[3]);
116 return 0;
117 }
118 /* control and data */
119 for (i = 1; i < 3; i++)
120 printstrbufarg(tcp, tcp->u_arg[i], 1);
121 /* pointer to flags */
122 if (tcp->u_arg[3] == 0)
123 tprints("NULL");
124 else if (umove(tcp, tcp->u_arg[3], &flags) < 0)
125 tprints("[?]");
126 else {
127 tprints("[");
128 printflags(msgflags, flags, "RS_???");
129 tprints("]");
130 }
131 /* decode return value */
132 switch (tcp->u_rval) {
133 case MORECTL:
134 tcp->auxstr = "MORECTL";
135 break;
136 case MORECTL|MOREDATA:
137 tcp->auxstr = "MORECTL|MOREDATA";
138 break;
139 case MOREDATA:
140 tcp->auxstr = "MORECTL";
141 break;
142 default:
143 tcp->auxstr = NULL;
144 break;
145 }
146 }
147 return RVAL_HEX | RVAL_STR;
148 }
149
150 # if defined SYS_putpmsg || defined SYS_getpmsg
151 #include "xlat/pmsgflags.h"
152 # ifdef SYS_putpmsg
SYS_FUNC(putpmsg)153 SYS_FUNC(putpmsg)
154 {
155 int i;
156
157 if (entering(tcp)) {
158 /* fd */
159 tprintf("%ld, ", tcp->u_arg[0]);
160 /* control and data */
161 for (i = 1; i < 3; i++)
162 printstrbufarg(tcp, tcp->u_arg[i], 0);
163 /* band */
164 tprintf("%ld, ", tcp->u_arg[3]);
165 /* flags */
166 printflags(pmsgflags, tcp->u_arg[4], "MSG_???");
167 }
168 return 0;
169 }
170 # endif
171 # ifdef SYS_getpmsg
SYS_FUNC(getpmsg)172 SYS_FUNC(getpmsg)
173 {
174 int i, flags;
175
176 if (entering(tcp)) {
177 /* fd */
178 tprintf("%lu, ", tcp->u_arg[0]);
179 } else {
180 if (syserror(tcp)) {
181 tprintf("%#lx, %#lx, %#lx, %#lx", tcp->u_arg[1],
182 tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[4]);
183 return 0;
184 }
185 /* control and data */
186 for (i = 1; i < 3; i++)
187 printstrbufarg(tcp, tcp->u_arg[i], 1);
188 /* pointer to band */
189 printnum_int(tcp, tcp->u_arg[3], "%d");
190 tprints(", ");
191 /* pointer to flags */
192 if (tcp->u_arg[4] == 0)
193 tprints("NULL");
194 else if (umove(tcp, tcp->u_arg[4], &flags) < 0)
195 tprints("[?]");
196 else {
197 tprints("[");
198 printflags(pmsgflags, flags, "MSG_???");
199 tprints("]");
200 }
201 /* decode return value */
202 switch (tcp->u_rval) {
203 case MORECTL:
204 tcp->auxstr = "MORECTL";
205 break;
206 case MORECTL|MOREDATA:
207 tcp->auxstr = "MORECTL|MOREDATA";
208 break;
209 case MOREDATA:
210 tcp->auxstr = "MORECTL";
211 break;
212 default:
213 tcp->auxstr = NULL;
214 break;
215 }
216 }
217 return RVAL_HEX | RVAL_STR;
218 }
219 # endif
220 # endif /* getpmsg/putpmsg */
221
222 #endif /* STREAMS syscalls support */
223
224
225 #ifdef HAVE_SYS_POLL_H
226
227 #include "xlat/pollflags.h"
228
229 static int
decode_poll(struct tcb * tcp,long pts)230 decode_poll(struct tcb *tcp, long pts)
231 {
232 struct pollfd fds;
233 unsigned nfds;
234 unsigned long size, start, cur, end, abbrev_end;
235 int failed = 0;
236
237 if (entering(tcp)) {
238 nfds = tcp->u_arg[1];
239 size = sizeof(fds) * nfds;
240 start = tcp->u_arg[0];
241 end = start + size;
242 if (nfds == 0 || size / sizeof(fds) != nfds || end < start) {
243 tprintf("%#lx, %d, ",
244 tcp->u_arg[0], nfds);
245 return 0;
246 }
247 if (abbrev(tcp)) {
248 abbrev_end = start + max_strlen * sizeof(fds);
249 if (abbrev_end < start)
250 abbrev_end = end;
251 } else {
252 abbrev_end = end;
253 }
254 tprints("[");
255 for (cur = start; cur < end; cur += sizeof(fds)) {
256 if (cur > start)
257 tprints(", ");
258 if (cur >= abbrev_end) {
259 tprints("...");
260 break;
261 }
262 if (umoven(tcp, cur, sizeof fds, &fds) < 0) {
263 tprints("?");
264 failed = 1;
265 break;
266 }
267 if (fds.fd < 0) {
268 tprintf("{fd=%d}", fds.fd);
269 continue;
270 }
271 tprints("{fd=");
272 printfd(tcp, fds.fd);
273 tprints(", events=");
274 printflags(pollflags, fds.events, "POLL???");
275 tprints("}");
276 }
277 tprints("]");
278 if (failed)
279 tprintf(" %#lx", start);
280 tprintf(", %d, ", nfds);
281 return 0;
282 } else {
283 static char outstr[1024];
284 char *outptr;
285 #define end_outstr (outstr + sizeof(outstr))
286 const char *flagstr;
287
288 if (syserror(tcp))
289 return 0;
290 if (tcp->u_rval == 0) {
291 tcp->auxstr = "Timeout";
292 return RVAL_STR;
293 }
294
295 nfds = tcp->u_arg[1];
296 size = sizeof(fds) * nfds;
297 start = tcp->u_arg[0];
298 end = start + size;
299 if (nfds == 0 || size / sizeof(fds) != nfds || end < start)
300 return 0;
301 if (abbrev(tcp)) {
302 abbrev_end = start + max_strlen * sizeof(fds);
303 if (abbrev_end < start)
304 abbrev_end = end;
305 } else {
306 abbrev_end = end;
307 }
308
309 outptr = outstr;
310
311 for (cur = start; cur < end; cur += sizeof(fds)) {
312 if (umoven(tcp, cur, sizeof fds, &fds) < 0) {
313 if (outptr < end_outstr - 2)
314 *outptr++ = '?';
315 failed = 1;
316 break;
317 }
318 if (!fds.revents)
319 continue;
320 if (outptr == outstr) {
321 *outptr++ = '[';
322 } else {
323 if (outptr < end_outstr - 3)
324 outptr = stpcpy(outptr, ", ");
325 }
326 if (cur >= abbrev_end) {
327 if (outptr < end_outstr - 4)
328 outptr = stpcpy(outptr, "...");
329 break;
330 }
331 if (outptr < end_outstr - (sizeof("{fd=%d, revents=") + sizeof(int)*3) + 1)
332 outptr += sprintf(outptr, "{fd=%d, revents=", fds.fd);
333 flagstr = sprintflags("", pollflags, fds.revents);
334 if (outptr < end_outstr - (strlen(flagstr) + 2)) {
335 outptr = stpcpy(outptr, flagstr);
336 *outptr++ = '}';
337 }
338 }
339 if (failed)
340 return 0;
341
342 if (outptr != outstr /* && outptr < end_outstr - 1 (always true)*/)
343 *outptr++ = ']';
344
345 *outptr = '\0';
346 if (pts) {
347 if (outptr < end_outstr - (10 + TIMESPEC_TEXT_BUFSIZE)) {
348 outptr = stpcpy(outptr, outptr == outstr ? "left " : ", left ");
349 sprint_timespec(outptr, tcp, pts);
350 }
351 }
352
353 if (outptr == outstr)
354 return 0;
355
356 tcp->auxstr = outstr;
357 return RVAL_STR;
358 #undef end_outstr
359 }
360 }
361
SYS_FUNC(poll)362 SYS_FUNC(poll)
363 {
364 int rc = decode_poll(tcp, 0);
365 if (entering(tcp)) {
366 # ifdef INFTIM
367 if (tcp->u_arg[2] == INFTIM)
368 tprints("INFTIM");
369 else
370 # endif
371 tprintf("%ld", tcp->u_arg[2]);
372 }
373 return rc;
374 }
375
SYS_FUNC(ppoll)376 SYS_FUNC(ppoll)
377 {
378 int rc = decode_poll(tcp, tcp->u_arg[2]);
379 if (entering(tcp)) {
380 print_timespec(tcp, tcp->u_arg[2]);
381 tprints(", ");
382 /* NB: kernel requires arg[4] == NSIG / 8 */
383 print_sigset_addr_len(tcp, tcp->u_arg[3], tcp->u_arg[4]);
384 tprintf(", %lu", tcp->u_arg[4]);
385 }
386 return rc;
387 }
388
389 #else /* !HAVE_SYS_POLL_H */
SYS_FUNC(poll)390 SYS_FUNC(poll)
391 {
392 return 0;
393 }
394 #endif
395