desc.c revision f240005701067569f9a9c97d9b01cdaba247c56a 
1/*
2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 *	$Id$
31 */
32
33#include "defs.h"
34
35#include <fcntl.h>
36#include <sys/file.h>
37#ifdef LINUX
38#include <inttypes.h>
39#endif
40#ifdef HAVE_SYS_EPOLL_H
41#include <sys/epoll.h>
42#endif
43#ifdef HAVE_LIBAIO_H
44#include <libaio.h>
45#endif
46
47#if HAVE_LONG_LONG_OFF_T
48/*
49 * Hacks for systems that have a long long off_t
50 */
51#define flock64	flock		/* Horrid hack */
52#define printflock printflock64	/* Horrider hack */
53#endif
54
55
56static const struct xlat fcntlcmds[] = {
57	{ F_DUPFD,	"F_DUPFD"	},
58	{ F_GETFD,	"F_GETFD"	},
59	{ F_SETFD,	"F_SETFD"	},
60	{ F_GETFL,	"F_GETFL"	},
61	{ F_SETFL,	"F_SETFL"	},
62	{ F_GETLK,	"F_GETLK"	},
63	{ F_SETLK,	"F_SETLK"	},
64	{ F_SETLKW,	"F_SETLKW"	},
65	{ F_GETOWN,	"F_GETOWN"	},
66	{ F_SETOWN,	"F_SETOWN"	},
67#ifdef F_RSETLK
68	{ F_RSETLK,	"F_RSETLK"	},
69#endif
70#ifdef F_RSETLKW
71	{ F_RSETLKW,	"F_RSETLKW"	},
72#endif
73#ifdef F_RGETLK
74	{ F_RGETLK,	"F_RGETLK"	},
75#endif
76#ifdef F_CNVT
77	{ F_CNVT,	"F_CNVT"	},
78#endif
79#ifdef F_SETSIG
80	{ F_SETSIG,	"F_SETSIG"	},
81#endif
82#ifdef F_GETSIG
83	{ F_GETSIG,	"F_GETSIG"	},
84#endif
85#ifdef F_CHKFL
86	{ F_CHKFL,	"F_CHKFL"	},
87#endif
88#ifdef F_DUP2FD
89	{ F_DUP2FD,	"F_DUP2FD"	},
90#endif
91#ifdef F_ALLOCSP
92	{ F_ALLOCSP,	"F_ALLOCSP"	},
93#endif
94#ifdef F_ISSTREAM
95	{ F_ISSTREAM,	"F_ISSTREAM"	},
96#endif
97#ifdef F_PRIV
98	{ F_PRIV,	"F_PRIV"	},
99#endif
100#ifdef F_NPRIV
101	{ F_NPRIV,	"F_NPRIV"	},
102#endif
103#ifdef F_QUOTACL
104	{ F_QUOTACL,	"F_QUOTACL"	},
105#endif
106#ifdef F_BLOCKS
107	{ F_BLOCKS,	"F_BLOCKS"	},
108#endif
109#ifdef F_BLKSIZE
110	{ F_BLKSIZE,	"F_BLKSIZE"	},
111#endif
112#ifdef F_GETOWN
113	{ F_GETOWN,	"F_GETOWN"	},
114#endif
115#ifdef F_SETOWN
116	{ F_SETOWN,	"F_SETOWN"	},
117#endif
118#ifdef F_REVOKE
119	{ F_REVOKE,	"F_REVOKE"	},
120#endif
121#ifdef F_SETLK
122	{ F_SETLK,	"F_SETLK"	},
123#endif
124#ifdef F_SETLKW
125	{ F_SETLKW,	"F_SETLKW"	},
126#endif
127#ifdef F_FREESP
128	{ F_FREESP,	"F_FREESP"	},
129#endif
130#ifdef F_GETLK
131	{ F_GETLK,	"F_GETLK"	},
132#endif
133#ifdef F_SETLK64
134	{ F_SETLK64,	"F_SETLK64"	},
135#endif
136#ifdef F_SETLKW64
137	{ F_SETLKW64,	"F_SETLKW64"	},
138#endif
139#ifdef F_FREESP64
140	{ F_FREESP64,	"F_FREESP64"	},
141#endif
142#ifdef F_GETLK64
143	{ F_GETLK64,	"F_GETLK64"	},
144#endif
145#ifdef F_SHARE
146	{ F_SHARE,	"F_SHARE"	},
147#endif
148#ifdef F_UNSHARE
149	{ F_UNSHARE,	"F_UNSHARE"	},
150#endif
151	{ 0,		NULL		},
152};
153
154static const struct xlat fdflags[] = {
155#ifdef FD_CLOEXEC
156	{ FD_CLOEXEC,	"FD_CLOEXEC"	},
157#endif
158	{ 0,		NULL		},
159};
160
161#ifdef LOCK_SH
162
163static const struct xlat flockcmds[] = {
164	{ LOCK_SH,	"LOCK_SH"	},
165	{ LOCK_EX,	"LOCK_EX"	},
166	{ LOCK_NB,	"LOCK_NB"	},
167	{ LOCK_UN,	"LOCK_UN"	},
168	{ 0,		NULL		},
169};
170
171#endif /* LOCK_SH */
172
173static const struct xlat lockfcmds[] = {
174	{ F_RDLCK,	"F_RDLCK"	},
175	{ F_WRLCK,	"F_WRLCK"	},
176	{ F_UNLCK,	"F_UNLCK"	},
177#ifdef F_EXLCK
178	{ F_EXLCK,	"F_EXLCK"	},
179#endif
180#ifdef F_SHLCK
181	{ F_SHLCK,	"F_SHLCK"	},
182#endif
183	{ 0,		NULL		},
184};
185
186static const struct xlat whence[] = {
187	{ SEEK_SET,	"SEEK_SET"	},
188	{ SEEK_CUR,	"SEEK_CUR"	},
189	{ SEEK_END,	"SEEK_END"	},
190	{ 0,		NULL		},
191};
192
193#ifndef HAVE_LONG_LONG_OFF_T
194/* fcntl/lockf */
195static void
196printflock(tcp, addr, getlk)
197struct tcb *tcp;
198long addr;
199int getlk;
200{
201	struct flock fl;
202
203	if (umove(tcp, addr, &fl) < 0) {
204		tprintf("{...}");
205		return;
206	}
207	tprintf("{type=");
208	printxval(lockfcmds, fl.l_type, "F_???");
209	tprintf(", whence=");
210	printxval(whence, fl.l_whence, "SEEK_???");
211	tprintf(", start=%ld, len=%ld", fl.l_start, fl.l_len);
212	if (getlk)
213		tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
214	else
215		tprintf("}");
216}
217#endif
218
219#if _LFS64_LARGEFILE || HAVE_LONG_LONG_OFF_T
220/* fcntl/lockf */
221static void
222printflock64(tcp, addr, getlk)
223struct tcb *tcp;
224long addr;
225int getlk;
226{
227	struct flock64 fl;
228
229	if (umove(tcp, addr, &fl) < 0) {
230		tprintf("{...}");
231		return;
232	}
233	tprintf("{type=");
234	printxval(lockfcmds, fl.l_type, "F_???");
235	tprintf(", whence=");
236	printxval(whence, fl.l_whence, "SEEK_???");
237	tprintf(", start=%lld, len=%lld", (long long) fl.l_start, (long long) fl.l_len);
238	if (getlk)
239		tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
240	else
241		tprintf("}");
242}
243#endif
244
245static const char *
246sprintflags(const struct xlat *xlat, int flags)
247{
248	static char outstr[1024];
249	const char *sep;
250
251	strcpy(outstr, "flags ");
252	sep = "";
253	for (; xlat->str; xlat++) {
254		if ((flags & xlat->val) == xlat->val) {
255			sprintf(outstr + strlen(outstr),
256				"%s%s", sep, xlat->str);
257			sep = "|";
258			flags &= ~xlat->val;
259		}
260	}
261	if (flags)
262		sprintf(outstr + strlen(outstr),
263			"%s%#x", sep, flags);
264	return outstr;
265}
266
267/*
268 * low bits of the open(2) flags define access mode,
269 * other bits are real flags.
270 */
271static const char *
272sprint_open_modes(mode_t flags)
273{
274	extern const struct xlat open_access_modes[];
275	extern const struct xlat open_mode_flags[];
276	static char outstr[1024];
277	const char *str = xlookup(open_access_modes, flags & 3);
278	const char *sep = "";
279	const struct xlat *x;
280
281	strcpy(outstr, "flags ");
282	if (str)
283	{
284		strcat(outstr, str);
285		flags &= ~3;
286		if (!flags)
287			return outstr;
288		strcat(outstr, "|");
289	}
290
291	for (x = open_mode_flags; x->str; x++)
292	{
293		if ((flags & x->val) == x->val)
294		{
295			sprintf(outstr + strlen(outstr),
296				"%s%s", sep, x->str);
297			sep = "|";
298			flags &= ~x->val;
299		}
300	}
301	if (flags)
302		sprintf(outstr + strlen(outstr), "%s%#x", sep, flags);
303	return outstr;
304}
305
306int
307sys_fcntl(struct tcb *tcp)
308{
309	if (entering(tcp)) {
310		tprintf("%ld, ", tcp->u_arg[0]);
311		printxval(fcntlcmds, tcp->u_arg[1], "F_???");
312		switch (tcp->u_arg[1]) {
313		case F_SETFD:
314			tprintf(", ");
315			printflags(fdflags, tcp->u_arg[2], "FD_???");
316			break;
317		case F_SETOWN: case F_DUPFD:
318			tprintf(", %ld", tcp->u_arg[2]);
319			break;
320		case F_SETFL:
321			tprintf(", ");
322			tprint_open_modes(tcp, tcp->u_arg[2]);
323			break;
324		case F_SETLK: case F_SETLKW:
325#ifdef F_FREESP
326		case F_FREESP:
327#endif
328			tprintf(", ");
329			printflock(tcp, tcp->u_arg[2], 0);
330			break;
331#if _LFS64_LARGEFILE
332#ifdef F_FREESP64
333		case F_FREESP64:
334#endif
335		/* Linux glibc defines SETLK64 as SETLK,
336		   even though the kernel has different values - as does Solaris. */
337#if defined(F_SETLK64) && F_SETLK64+0!=F_SETLK
338		case F_SETLK64:
339#endif
340#if defined(F_SETLKW64) && F_SETLKW64+0!=F_SETLKW
341		case F_SETLKW64:
342#endif
343			tprintf(", ");
344			printflock64(tcp, tcp->u_arg[2], 0);
345			break;
346#endif
347 		}
348	}
349	else {
350		switch (tcp->u_arg[1]) {
351		case F_DUPFD:
352		case F_SETFD: case F_SETFL:
353		case F_SETLK: case F_SETLKW:
354		case F_SETOWN: case F_GETOWN:
355			break;
356		case F_GETFD:
357			if (tcp->u_rval == 0)
358				return 0;
359			tcp->auxstr = sprintflags(fdflags, tcp->u_rval);
360			return RVAL_HEX|RVAL_STR;
361		case F_GETFL:
362			tcp->auxstr = sprint_open_modes(tcp->u_rval);
363			return RVAL_HEX|RVAL_STR;
364		case F_GETLK:
365			tprintf(", ");
366			printflock(tcp, tcp->u_arg[2], 1);
367			break;
368#if _LFS64_LARGEFILE
369#if defined(F_GETLK64) && F_GETLK64+0!=F_GETLK
370		case F_GETLK64:
371#endif
372			tprintf(", ");
373			printflock64(tcp, tcp->u_arg[2], 1);
374			break;
375#endif
376 		default:
377			tprintf(", %#lx", tcp->u_arg[2]);
378			break;
379		}
380	}
381	return 0;
382}
383
384#ifdef LOCK_SH
385
386int
387sys_flock(tcp)
388struct tcb *tcp;
389{
390	if (entering(tcp)) {
391		tprintf("%ld, ", tcp->u_arg[0]);
392		printflags(flockcmds, tcp->u_arg[1], "LOCK_???");
393	}
394	return 0;
395}
396#endif /* LOCK_SH */
397
398int
399sys_close(tcp)
400struct tcb *tcp;
401{
402	if (entering(tcp)) {
403		tprintf("%ld", tcp->u_arg[0]);
404	}
405	return 0;
406}
407
408int
409sys_dup(tcp)
410struct tcb *tcp;
411{
412	if (entering(tcp)) {
413		tprintf("%ld", tcp->u_arg[0]);
414	}
415	return 0;
416}
417
418int
419sys_dup2(tcp)
420struct tcb *tcp;
421{
422	if (entering(tcp)) {
423		tprintf("%ld, %ld", tcp->u_arg[0], tcp->u_arg[1]);
424	}
425	return 0;
426}
427
428#if defined(ALPHA) || defined(FREEBSD) || defined(SUNOS4)
429int
430sys_getdtablesize(tcp)
431struct tcb *tcp;
432{
433	return 0;
434}
435#endif /* ALPHA || FREEBSD || SUNOS4 */
436
437static int
438decode_select(struct tcb *tcp, long *args, enum bitness_t bitness)
439{
440	int i, j, nfds;
441	unsigned int fdsize = ((((args[0] + 7) / 8) + sizeof(long) - 1)
442			       & -sizeof(long));
443	fd_set *fds;
444	static char outstr[1024];
445	char *sep;
446	long arg;
447
448	if (entering(tcp)) {
449		fds = (fd_set *) malloc(fdsize);
450		if (fds == NULL)
451			fprintf(stderr, "out of memory\n");
452		nfds = args[0];
453		tprintf("%d", nfds);
454		for (i = 0; i < 3; i++) {
455			arg = args[i+1];
456			if (arg == 0) {
457				tprintf(", NULL");
458				continue;
459			}
460			if (fds == NULL || !verbose(tcp)) {
461				tprintf(", %#lx", arg);
462				continue;
463			}
464			if (umoven(tcp, arg, fdsize, (char *) fds) < 0) {
465				tprintf(", [?]");
466				continue;
467			}
468			tprintf(", [");
469			for (j = 0, sep = ""; j < nfds; j++) {
470				if (FD_ISSET(j, fds)) {
471					tprintf("%s%u", sep, j);
472					sep = " ";
473				}
474			}
475			tprintf("]");
476		}
477		free(fds);
478		tprintf(", ");
479		printtv_bitness(tcp, args[4], bitness, 0);
480	}
481	else
482	{
483		unsigned int cumlen = 0;
484		char *sep = "";
485
486		if (syserror(tcp))
487			return 0;
488
489		if ((nfds = tcp->u_rval) == 0) {
490			tcp->auxstr = "Timeout";
491			return RVAL_STR;
492		}
493
494		fds = (fd_set *) malloc(fdsize);
495		if (fds == NULL)
496			fprintf(stderr, "out of memory\n");
497
498		outstr[0] = '\0';
499		for (i = 0; i < 3; i++) {
500			int first = 1;
501			char str[20];
502
503			tcp->auxstr = outstr;
504			arg = args[i+1];
505			if (fds == NULL || !arg ||
506			    umoven(tcp, arg, fdsize, (char *) fds) < 0)
507				continue;
508			for (j = 0; j < args[0]; j++) {
509				if (FD_ISSET(j, fds)) {
510					if (first) {
511						sprintf(str, "%s%s [%u", sep,
512							i == 0 ? "in" :
513							i == 1 ? "out" :
514							"except", j);
515						first = 0;
516						sep = ", ";
517					}
518					else
519						sprintf(str, " %u", j);
520					cumlen += strlen(str);
521					if (cumlen < sizeof(outstr))
522						strcat(outstr, str);
523					nfds--;
524				}
525			}
526			if (cumlen)
527				strcat(outstr, "]");
528			if (nfds == 0)
529				break;
530		}
531		free(fds);
532#ifdef LINUX
533		/* This contains no useful information on SunOS.  */
534		if (args[4]) {
535			char str[128];
536
537			sprintf(str, "%sleft ", sep);
538			sprinttv(tcp, args[4], bitness, str + strlen(str));
539			if ((cumlen += strlen(str)) < sizeof(outstr))
540				strcat(outstr, str);
541		}
542#endif /* LINUX */
543		return RVAL_STR;
544	}
545	return 0;
546}
547
548#ifdef LINUX
549
550int
551sys_oldselect(tcp)
552struct tcb *tcp;
553{
554	long args[5];
555
556	if (umoven(tcp, tcp->u_arg[0], sizeof args, (char *) args) < 0) {
557		tprintf("[...]");
558		return 0;
559	}
560	return decode_select(tcp, args, BITNESS_CURRENT);
561}
562
563#ifdef ALPHA
564int
565sys_osf_select(tcp)
566struct tcb *tcp;
567{
568	long *args = tcp->u_arg;
569	return decode_select(tcp, args, BITNESS_32);
570}
571#endif
572
573static struct xlat epollctls[] = {
574#ifdef EPOLL_CTL_ADD
575	{ EPOLL_CTL_ADD,	"EPOLL_CTL_ADD"	},
576#endif
577#ifdef EPOLL_CTL_MOD
578	{ EPOLL_CTL_MOD,	"EPOLL_CTL_MOD"	},
579#endif
580#ifdef EPOLL_CTL_DEL
581	{ EPOLL_CTL_DEL,	"EPOLL_CTL_DEL"	},
582#endif
583	{ 0,			NULL		}
584};
585
586static struct xlat epollevents[] = {
587#ifdef EPOLLIN
588	{ EPOLLIN,	"EPOLLIN"	},
589#endif
590#ifdef EPOLLPRI
591	{ EPOLLPRI,	"EPOLLPRI"	},
592#endif
593#ifdef EPOLLOUT
594	{ EPOLLOUT,	"EPOLLOUT"	},
595#endif
596#ifdef EPOLLRDNORM
597	{ EPOLLRDNORM,	"EPOLLRDNORM"	},
598#endif
599#ifdef EPOLLRDBAND
600	{ EPOLLRDBAND,	"EPOLLRDBAND"	},
601#endif
602#ifdef EPOLLWRNORM
603	{ EPOLLWRNORM,	"EPOLLWRNORM"	},
604#endif
605#ifdef EPOLLWRBAND
606	{ EPOLLWRBAND,	"EPOLLWRBAND"	},
607#endif
608#ifdef EPOLLMSG
609	{ EPOLLMSG,	"EPOLLMSG"	},
610#endif
611#ifdef EPOLLERR
612	{ EPOLLERR,	"EPOLLERR"	},
613#endif
614#ifdef EPOLLHUP
615	{ EPOLLHUP,	"EPOLLHUP"	},
616#endif
617#ifdef EPOLLONESHOT
618	{ EPOLLONESHOT,	"EPOLLONESHOT"	},
619#endif
620#ifdef EPOLLET
621	{ EPOLLET,	"EPOLLET"	},
622#endif
623	{ 0,		NULL		}
624};
625
626int
627sys_epoll_create(tcp)
628struct tcb *tcp;
629{
630	if (entering(tcp))
631		tprintf("%ld", tcp->u_arg[0]);
632	return 0;
633}
634
635#ifdef HAVE_SYS_EPOLL_H
636static void
637print_epoll_event(ev)
638struct epoll_event *ev;
639{
640	tprintf("{");
641	printflags(epollevents, ev->events, "EPOLL???");
642	/* We cannot know what format the program uses, so print u32 and u64
643	   which will cover every value.  */
644	tprintf(", {u32=%" PRIu32 ", u64=%" PRIu64 "}}",
645		ev->data.u32, ev->data.u64);
646}
647#endif
648
649int
650sys_epoll_ctl(tcp)
651struct tcb *tcp;
652{
653	if (entering(tcp)) {
654		tprintf("%ld, ", tcp->u_arg[0]);
655                printxval(epollctls, tcp->u_arg[1], "EPOLL_CTL_???");
656		tprintf(", %ld, ", tcp->u_arg[2]);
657		if (tcp->u_arg[3] == 0)
658			tprintf("NULL");
659		else {
660#ifdef HAVE_SYS_EPOLL_H
661			struct epoll_event ev;
662			if (umove(tcp, tcp->u_arg[3], &ev) == 0)
663				print_epoll_event(&ev);
664			else
665#endif
666				tprintf("{...}");
667		}
668	}
669	return 0;
670}
671
672static void
673epoll_wait_common(tcp)
674struct tcb *tcp;
675{
676	if (entering(tcp))
677		tprintf("%ld, ", tcp->u_arg[0]);
678	else {
679		if (syserror(tcp))
680			tprintf("%lx", tcp->u_arg[1]);
681		else if (tcp->u_rval == 0)
682			tprintf("{}");
683		else {
684#ifdef HAVE_SYS_EPOLL_H
685			struct epoll_event ev, *start, *cur, *end;
686			int failed = 0;
687
688			tprintf("{");
689			start = (struct epoll_event *) tcp->u_arg[1];
690			end = start + tcp->u_rval;
691			for (cur = start; cur < end; ++cur) {
692				if (cur > start)
693					tprintf(", ");
694				if (umove(tcp, (long) cur, &ev) == 0)
695					print_epoll_event(&ev);
696				else {
697					tprintf("?");
698					failed = 1;
699					break;
700				}
701			}
702			tprintf("}");
703			if (failed)
704				tprintf(" %#lx", (long) start);
705#else
706			tprintf("{...}");
707#endif
708		}
709		tprintf(", %ld, %ld", tcp->u_arg[2], tcp->u_arg[3]);
710	}
711}
712
713int
714sys_epoll_wait(tcp)
715struct tcb *tcp;
716{
717	epoll_wait_common(tcp);
718	return 0;
719}
720
721int
722sys_epoll_pwait(tcp)
723struct tcb *tcp;
724{
725	epoll_wait_common(tcp);
726	if (exiting(tcp))
727		print_sigset(tcp, tcp->u_arg[4], 0);
728	return 0;
729}
730
731int
732sys_io_setup(tcp)
733struct tcb *tcp;
734{
735	if (entering(tcp))
736		tprintf("%ld, ", tcp->u_arg[0]);
737	else {
738		if (syserror(tcp))
739			tprintf("0x%0lx", tcp->u_arg[1]);
740		else {
741			unsigned long user_id;
742			if (umove(tcp, tcp->u_arg[1], &user_id) == 0)
743				tprintf("{%lu}", user_id);
744			else
745				tprintf("{...}");
746		}
747	}
748	return 0;
749}
750
751int
752sys_io_destroy(tcp)
753struct tcb *tcp;
754{
755	if (entering(tcp))
756		tprintf("%lu", tcp->u_arg[0]);
757	return 0;
758}
759
760int
761sys_io_submit(tcp)
762struct tcb *tcp;
763{
764	long nr;
765	if (entering(tcp)) {
766		tprintf("%lu, %ld, ", tcp->u_arg[0], tcp->u_arg[1]);
767		nr = tcp->u_arg[1];
768		/* and if nr is negative? */
769		if (nr == 0)
770			tprintf("{}");
771		else {
772#ifdef HAVE_LIBAIO_H
773			long i;
774			struct iocb *iocbp, **iocbs = (void *)tcp->u_arg[2];
775
776			for (i = 0; i < nr; i++, iocbs++) {
777				struct iocb iocb;
778				if (i == 0)
779					tprintf("{");
780				else
781					tprintf(", ");
782
783				if (umove(tcp, (unsigned long)iocbs, &iocbp) ||
784				    umove(tcp, (unsigned long)iocbp, &iocb)) {
785					tprintf("{...}");
786					continue;
787				}
788				tprintf("{%p, %u, %hu, %hu, %d}",
789					iocb.data, iocb.key,
790					iocb.aio_lio_opcode,
791					iocb.aio_reqprio, iocb.aio_fildes);
792			}
793			if (i)
794				tprintf("}");
795#else
796			tprintf("{...}");
797#endif
798		}
799	}
800	return 0;
801}
802
803int
804sys_io_cancel(tcp)
805struct tcb *tcp;
806{
807	if (entering(tcp)) {
808#ifdef HAVE_LIBAIO_H
809		struct iocb iocb;
810#endif
811		tprintf("%lu, ", tcp->u_arg[0]);
812#ifdef HAVE_LIBAIO_H
813		if (umove(tcp, tcp->u_arg[1], &iocb) == 0) {
814			tprintf("{%p, %u, %hu, %hu, %d}, ",
815				iocb.data, iocb.key,
816				iocb.aio_lio_opcode,
817				iocb.aio_reqprio, iocb.aio_fildes);
818		} else
819#endif
820			tprintf("{...}, ");
821	} else {
822		if (tcp->u_rval < 0)
823			tprintf("{...}");
824		else {
825#ifdef HAVE_LIBAIO_H
826			struct io_event event;
827			if (umove(tcp, tcp->u_arg[2], &event) == 0)
828				tprintf("{%p, %p, %ld, %ld}",
829					event.data, event.obj,
830					event.res, event.res2);
831			else
832#endif
833				tprintf("{...}");
834		}
835	}
836	return 0;
837}
838
839int
840sys_io_getevents(tcp)
841struct tcb *tcp;
842{
843	if (entering(tcp)) {
844		tprintf("%ld, %ld, %ld, ", tcp->u_arg[0], tcp->u_arg[1],
845			tcp->u_arg[2]);
846	} else {
847		if (tcp->u_rval == 0) {
848			tprintf("{}");
849		} else  {
850#ifdef HAVE_LIBAIO_H
851			struct io_event *events = (void *)tcp->u_arg[3];
852			long i, nr = tcp->u_rval;
853
854			for (i = 0; i < nr; i++, events++) {
855				struct io_event event;
856
857				if (i == 0)
858					tprintf("{");
859				else
860					tprintf(", ");
861
862				if (umove(tcp, (unsigned long)events, &event) != 0) {
863					tprintf("{...}");
864					continue;
865				}
866				tprintf("{%p, %p, %ld, %ld}", event.data,
867					event.obj, event.res, event.res2);
868			}
869			tprintf("}, ");
870#else
871				tprintf("{...}");
872#endif
873		}
874
875		if (tcp->u_arg[4] == 0)
876			tprintf("NULL");
877		else {
878			struct timespec to;
879			if (umove(tcp, tcp->u_arg[4], &to) == 0)
880				tprintf("{%lu, %lu}", to.tv_sec, to.tv_nsec);
881			else
882				tprintf("{...}");
883		}
884	}
885	return 0;
886}
887#endif /* LINUX */
888
889int
890sys_select(tcp)
891struct tcb *tcp;
892{
893	return decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
894}
895
896#ifdef LINUX
897int
898sys_pselect6(struct tcb *tcp)
899{
900	int rc = decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
901	if (exiting(tcp)) {
902		struct {
903			void *ss;
904			unsigned long len;
905		} data;
906		if (umove(tcp, tcp->u_arg[5], &data) < 0)
907			tprintf(", %#lx", tcp->u_arg[5]);
908		else {
909			tprintf(", {");
910			if (data.len < sizeof(sigset_t))
911				tprintf("%#lx", (long)data.ss);
912			else
913				print_sigset(tcp, (long)data.ss, 0);
914			tprintf(", %lu}", data.len);
915		}
916	}
917	return rc;
918}
919#endif
920