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
89 int
sys_putmsg(struct tcb * tcp)90 sys_putmsg(struct tcb *tcp)
91 {
92 int i;
93
94 if (entering(tcp)) {
95 /* fd */
96 tprintf("%ld, ", tcp->u_arg[0]);
97 /* control and data */
98 for (i = 1; i < 3; i++)
99 printstrbufarg(tcp, tcp->u_arg[i], 0);
100 /* flags */
101 printflags(msgflags, tcp->u_arg[3], "RS_???");
102 }
103 return 0;
104 }
105
106 int
sys_getmsg(struct tcb * tcp)107 sys_getmsg(struct tcb *tcp)
108 {
109 int i, flags;
110
111 if (entering(tcp)) {
112 /* fd */
113 tprintf("%lu, ", tcp->u_arg[0]);
114 } else {
115 if (syserror(tcp)) {
116 tprintf("%#lx, %#lx, %#lx",
117 tcp->u_arg[1], tcp->u_arg[2], tcp->u_arg[3]);
118 return 0;
119 }
120 /* control and data */
121 for (i = 1; i < 3; i++)
122 printstrbufarg(tcp, tcp->u_arg[i], 1);
123 /* pointer to flags */
124 if (tcp->u_arg[3] == 0)
125 tprints("NULL");
126 else if (umove(tcp, tcp->u_arg[3], &flags) < 0)
127 tprints("[?]");
128 else {
129 tprints("[");
130 printflags(msgflags, flags, "RS_???");
131 tprints("]");
132 }
133 /* decode return value */
134 switch (tcp->u_rval) {
135 case MORECTL:
136 tcp->auxstr = "MORECTL";
137 break;
138 case MORECTL|MOREDATA:
139 tcp->auxstr = "MORECTL|MOREDATA";
140 break;
141 case MOREDATA:
142 tcp->auxstr = "MORECTL";
143 break;
144 default:
145 tcp->auxstr = NULL;
146 break;
147 }
148 }
149 return RVAL_HEX | RVAL_STR;
150 }
151
152 # if defined SYS_putpmsg || defined SYS_getpmsg
153 #include "xlat/pmsgflags.h"
154 # ifdef SYS_putpmsg
155 int
sys_putpmsg(struct tcb * tcp)156 sys_putpmsg(struct tcb *tcp)
157 {
158 int i;
159
160 if (entering(tcp)) {
161 /* fd */
162 tprintf("%ld, ", tcp->u_arg[0]);
163 /* control and data */
164 for (i = 1; i < 3; i++)
165 printstrbufarg(tcp, tcp->u_arg[i], 0);
166 /* band */
167 tprintf("%ld, ", tcp->u_arg[3]);
168 /* flags */
169 printflags(pmsgflags, tcp->u_arg[4], "MSG_???");
170 }
171 return 0;
172 }
173 # endif
174 # ifdef SYS_getpmsg
175 int
sys_getpmsg(struct tcb * tcp)176 sys_getpmsg(struct tcb *tcp)
177 {
178 int i, flags;
179
180 if (entering(tcp)) {
181 /* fd */
182 tprintf("%lu, ", tcp->u_arg[0]);
183 } else {
184 if (syserror(tcp)) {
185 tprintf("%#lx, %#lx, %#lx, %#lx", tcp->u_arg[1],
186 tcp->u_arg[2], tcp->u_arg[3], tcp->u_arg[4]);
187 return 0;
188 }
189 /* control and data */
190 for (i = 1; i < 3; i++)
191 printstrbufarg(tcp, tcp->u_arg[i], 1);
192 /* pointer to band */
193 printnum(tcp, tcp->u_arg[3], "%d");
194 tprints(", ");
195 /* pointer to flags */
196 if (tcp->u_arg[4] == 0)
197 tprints("NULL");
198 else if (umove(tcp, tcp->u_arg[4], &flags) < 0)
199 tprints("[?]");
200 else {
201 tprints("[");
202 printflags(pmsgflags, flags, "MSG_???");
203 tprints("]");
204 }
205 /* decode return value */
206 switch (tcp->u_rval) {
207 case MORECTL:
208 tcp->auxstr = "MORECTL";
209 break;
210 case MORECTL|MOREDATA:
211 tcp->auxstr = "MORECTL|MOREDATA";
212 break;
213 case MOREDATA:
214 tcp->auxstr = "MORECTL";
215 break;
216 default:
217 tcp->auxstr = NULL;
218 break;
219 }
220 }
221 return RVAL_HEX | RVAL_STR;
222 }
223 # endif
224 # endif /* getpmsg/putpmsg */
225
226 #endif /* STREAMS syscalls support */
227
228
229 #ifdef HAVE_SYS_POLL_H
230
231 #include "xlat/pollflags.h"
232
233 static int
decode_poll(struct tcb * tcp,long pts)234 decode_poll(struct tcb *tcp, long pts)
235 {
236 struct pollfd fds;
237 unsigned nfds;
238 unsigned long size, start, cur, end, abbrev_end;
239 int failed = 0;
240
241 if (entering(tcp)) {
242 nfds = tcp->u_arg[1];
243 size = sizeof(fds) * nfds;
244 start = tcp->u_arg[0];
245 end = start + size;
246 if (nfds == 0 || size / sizeof(fds) != nfds || end < start) {
247 tprintf("%#lx, %d, ",
248 tcp->u_arg[0], nfds);
249 return 0;
250 }
251 if (abbrev(tcp)) {
252 abbrev_end = start + max_strlen * sizeof(fds);
253 if (abbrev_end < start)
254 abbrev_end = end;
255 } else {
256 abbrev_end = end;
257 }
258 tprints("[");
259 for (cur = start; cur < end; cur += sizeof(fds)) {
260 if (cur > start)
261 tprints(", ");
262 if (cur >= abbrev_end) {
263 tprints("...");
264 break;
265 }
266 if (umoven(tcp, cur, sizeof fds, (char *) &fds) < 0) {
267 tprints("?");
268 failed = 1;
269 break;
270 }
271 if (fds.fd < 0) {
272 tprintf("{fd=%d}", fds.fd);
273 continue;
274 }
275 tprints("{fd=");
276 printfd(tcp, fds.fd);
277 tprints(", events=");
278 printflags(pollflags, fds.events, "POLL???");
279 tprints("}");
280 }
281 tprints("]");
282 if (failed)
283 tprintf(" %#lx", start);
284 tprintf(", %d, ", nfds);
285 return 0;
286 } else {
287 static char outstr[1024];
288 char *outptr;
289 #define end_outstr (outstr + sizeof(outstr))
290 const char *flagstr;
291
292 if (syserror(tcp))
293 return 0;
294 if (tcp->u_rval == 0) {
295 tcp->auxstr = "Timeout";
296 return RVAL_STR;
297 }
298
299 nfds = tcp->u_arg[1];
300 size = sizeof(fds) * nfds;
301 start = tcp->u_arg[0];
302 end = start + size;
303 if (nfds == 0 || size / sizeof(fds) != nfds || end < start)
304 return 0;
305 if (abbrev(tcp)) {
306 abbrev_end = start + max_strlen * sizeof(fds);
307 if (abbrev_end < start)
308 abbrev_end = end;
309 } else {
310 abbrev_end = end;
311 }
312
313 outptr = outstr;
314
315 for (cur = start; cur < end; cur += sizeof(fds)) {
316 if (umoven(tcp, cur, sizeof fds, (char *) &fds) < 0) {
317 if (outptr < end_outstr - 2)
318 *outptr++ = '?';
319 failed = 1;
320 break;
321 }
322 if (!fds.revents)
323 continue;
324 if (outptr == outstr) {
325 *outptr++ = '[';
326 } else {
327 if (outptr < end_outstr - 3)
328 outptr = stpcpy(outptr, ", ");
329 }
330 if (cur >= abbrev_end) {
331 if (outptr < end_outstr - 4)
332 outptr = stpcpy(outptr, "...");
333 break;
334 }
335 if (outptr < end_outstr - (sizeof("{fd=%d, revents=") + sizeof(int)*3) + 1)
336 outptr += sprintf(outptr, "{fd=%d, revents=", fds.fd);
337 flagstr = sprintflags("", pollflags, fds.revents);
338 if (outptr < end_outstr - (strlen(flagstr) + 2)) {
339 outptr = stpcpy(outptr, flagstr);
340 *outptr++ = '}';
341 }
342 }
343 if (failed)
344 return 0;
345
346 if (outptr != outstr /* && outptr < end_outstr - 1 (always true)*/)
347 *outptr++ = ']';
348
349 *outptr = '\0';
350 if (pts) {
351 if (outptr < end_outstr - (10 + TIMESPEC_TEXT_BUFSIZE)) {
352 outptr = stpcpy(outptr, outptr == outstr ? "left " : ", left ");
353 sprint_timespec(outptr, tcp, pts);
354 }
355 }
356
357 if (outptr == outstr)
358 return 0;
359
360 tcp->auxstr = outstr;
361 return RVAL_STR;
362 #undef end_outstr
363 }
364 }
365
366 int
sys_poll(struct tcb * tcp)367 sys_poll(struct tcb *tcp)
368 {
369 int rc = decode_poll(tcp, 0);
370 if (entering(tcp)) {
371 # ifdef INFTIM
372 if (tcp->u_arg[2] == INFTIM)
373 tprints("INFTIM");
374 else
375 # endif
376 tprintf("%ld", tcp->u_arg[2]);
377 }
378 return rc;
379 }
380
381 int
sys_ppoll(struct tcb * tcp)382 sys_ppoll(struct tcb *tcp)
383 {
384 int rc = decode_poll(tcp, tcp->u_arg[2]);
385 if (entering(tcp)) {
386 print_timespec(tcp, tcp->u_arg[2]);
387 tprints(", ");
388 /* NB: kernel requires arg[4] == NSIG / 8 */
389 print_sigset_addr_len(tcp, tcp->u_arg[3], tcp->u_arg[4]);
390 tprintf(", %lu", tcp->u_arg[4]);
391 }
392 return rc;
393 }
394
395 #else /* !HAVE_SYS_POLL_H */
396 int
sys_poll(struct tcb * tcp)397 sys_poll(struct tcb *tcp)
398 {
399 return 0;
400 }
401 #endif
402