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: io.c,v 1.20 2005/06/01 19:22:08 roland Exp $
31 */
32
33#include "defs.h"
34
35#include <fcntl.h>
36#if HAVE_SYS_UIO_H
37#include <sys/uio.h>
38#endif
39
40#ifdef HAVE_LONG_LONG_OFF_T
41/*
42 * Hacks for systems that have a long long off_t
43 */
44
45#define sys_pread64	sys_pread
46#define sys_pwrite64	sys_pwrite
47#endif
48
49int
50sys_read(tcp)
51struct tcb *tcp;
52{
53	if (entering(tcp)) {
54		tprintf("%ld, ", tcp->u_arg[0]);
55	} else {
56		if (syserror(tcp))
57			tprintf("%#lx", tcp->u_arg[1]);
58		else
59			printstr(tcp, tcp->u_arg[1], tcp->u_rval);
60		tprintf(", %lu", tcp->u_arg[2]);
61	}
62	return 0;
63}
64
65int
66sys_write(tcp)
67struct tcb *tcp;
68{
69	if (entering(tcp)) {
70		tprintf("%ld, ", tcp->u_arg[0]);
71		printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
72		tprintf(", %lu", tcp->u_arg[2]);
73	}
74	return 0;
75}
76
77#if HAVE_SYS_UIO_H
78void
79tprint_iov(tcp, len, addr)
80struct tcb * tcp;
81unsigned long len;
82unsigned long addr;
83{
84	struct iovec iov;
85	unsigned long size, cur, end, abbrev_end;
86	int failed = 0;
87
88	if (!len) {
89		tprintf("[]");
90		return;
91	}
92	size = len * sizeof(iov);
93	end = addr + size;
94	if (!verbose(tcp) || size / sizeof(iov) != len || end < addr) {
95		tprintf("%#lx", addr);
96		return;
97	}
98	if (abbrev(tcp)) {
99		abbrev_end = addr + max_strlen * sizeof(iov);
100		if (abbrev_end < addr)
101			abbrev_end = end;
102	} else {
103		abbrev_end = end;
104	}
105	tprintf("[");
106	for (cur = addr; cur < end; cur += sizeof(iov)) {
107		if (cur > addr)
108			tprintf(", ");
109		if (cur >= abbrev_end) {
110			tprintf("...");
111			break;
112		}
113		if (umoven(tcp, cur, sizeof iov, (char *) &iov) < 0) {
114			tprintf("?");
115			failed = 1;
116			break;
117		}
118		tprintf("{");
119		printstr(tcp, (long) iov.iov_base, iov.iov_len);
120		tprintf(", %lu}", (unsigned long)iov.iov_len);
121	}
122	tprintf("]");
123	if (failed)
124		tprintf(" %#lx", addr);
125}
126
127int
128sys_readv(tcp)
129struct tcb *tcp;
130{
131	if (entering(tcp)) {
132		tprintf("%ld, ", tcp->u_arg[0]);
133	} else {
134		if (syserror(tcp)) {
135			tprintf("%#lx, %lu",
136					tcp->u_arg[1], tcp->u_arg[2]);
137			return 0;
138		}
139		tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1]);
140		tprintf(", %lu", tcp->u_arg[2]);
141	}
142	return 0;
143}
144
145int
146sys_writev(tcp)
147struct tcb *tcp;
148{
149	if (entering(tcp)) {
150		tprintf("%ld, ", tcp->u_arg[0]);
151		tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1]);
152		tprintf(", %lu", tcp->u_arg[2]);
153	}
154	return 0;
155}
156#endif
157
158#if defined(SVR4)
159
160int
161sys_pread(tcp)
162struct tcb *tcp;
163{
164	if (entering(tcp)) {
165		tprintf("%ld, ", tcp->u_arg[0]);
166	} else {
167		if (syserror(tcp))
168			tprintf("%#lx", tcp->u_arg[1]);
169		else
170			printstr(tcp, tcp->u_arg[1], tcp->u_rval);
171#if UNIXWARE
172		/* off_t is signed int */
173		tprintf(", %lu, %ld", tcp->u_arg[2], tcp->u_arg[3]);
174#else
175		tprintf(", %lu, %llu", tcp->u_arg[2],
176			LONG_LONG(tcp->u_arg[3], tcp->u_arg[4]));
177#endif
178	}
179	return 0;
180}
181
182int
183sys_pwrite(tcp)
184struct tcb *tcp;
185{
186	if (entering(tcp)) {
187		tprintf("%ld, ", tcp->u_arg[0]);
188		printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
189#if UNIXWARE
190		/* off_t is signed int */
191		tprintf(", %lu, %ld", tcp->u_arg[2], tcp->u_arg[3]);
192#else
193		tprintf(", %lu, %llu", tcp->u_arg[2],
194			LONG_LONG(tcp->u_arg[3], tcp->u_arg[4]));
195#endif
196	}
197	return 0;
198}
199#endif /* SVR4 */
200
201#ifdef FREEBSD
202#include <sys/types.h>
203#include <sys/socket.h>
204
205int
206sys_sendfile(tcp)
207struct tcb *tcp;
208{
209	if (entering(tcp)) {
210		tprintf("%ld, %ld, %llu, %lu", tcp->u_arg[0], tcp->u_arg[1],
211			LONG_LONG(tcp->u_arg[2], tcp->u_arg[3]),
212			tcp->u_arg[4]);
213	} else {
214		off_t offset;
215
216		if (!tcp->u_arg[5])
217			tprintf(", NULL");
218		else {
219			struct sf_hdtr hdtr;
220
221			if (umove(tcp, tcp->u_arg[5], &hdtr) < 0)
222				tprintf(", %#lx", tcp->u_arg[5]);
223			else {
224				tprintf(", { ");
225				tprint_iov(tcp, hdtr.hdr_cnt, hdtr.headers);
226				tprintf(", %u, ", hdtr.hdr_cnt);
227				tprint_iov(tcp, hdtr.trl_cnt, hdtr.trailers);
228				tprintf(", %u }", hdtr.hdr_cnt);
229			}
230		}
231		if (!tcp->u_arg[6])
232			tprintf(", NULL");
233		else if (umove(tcp, tcp->u_arg[6], &offset) < 0)
234			tprintf(", %#lx", tcp->u_arg[6]);
235		else
236			tprintf(", [%llu]", offset);
237		tprintf(", %lu", tcp->u_arg[7]);
238	}
239	return 0;
240}
241#endif /* FREEBSD */
242
243#ifdef LINUX
244
245/* The SH4 ABI does allow long longs in odd-numbered registers, but
246   does not allow them to be split between registers and memory - and
247   there are only four argument registers for normal functions.  As a
248   result pread takes an extra padding argument before the offset.  This
249   was changed late in the 2.4 series (around 2.4.20).  */
250#if defined(SH)
251#define PREAD_OFFSET_ARG 4
252#else
253#define PREAD_OFFSET_ARG 3
254#endif
255
256int
257sys_pread(tcp)
258struct tcb *tcp;
259{
260	if (entering(tcp)) {
261		tprintf("%ld, ", tcp->u_arg[0]);
262	} else {
263		if (syserror(tcp))
264			tprintf("%#lx", tcp->u_arg[1]);
265		else
266			printstr(tcp, tcp->u_arg[1], tcp->u_rval);
267		ALIGN64 (tcp, PREAD_OFFSET_ARG); /* PowerPC alignment restriction */
268		tprintf(", %lu, %llu", tcp->u_arg[2],
269			*(unsigned long long *)&tcp->u_arg[PREAD_OFFSET_ARG]);
270	}
271	return 0;
272}
273
274int
275sys_pwrite(tcp)
276struct tcb *tcp;
277{
278	if (entering(tcp)) {
279		tprintf("%ld, ", tcp->u_arg[0]);
280		printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
281		ALIGN64 (tcp, PREAD_OFFSET_ARG); /* PowerPC alignment restriction */
282		tprintf(", %lu, %llu", tcp->u_arg[2],
283			*(unsigned long long *)&tcp->u_arg[PREAD_OFFSET_ARG]);
284	}
285	return 0;
286}
287
288int
289sys_sendfile(tcp)
290struct tcb *tcp;
291{
292	if (entering(tcp)) {
293		off_t offset;
294
295		tprintf("%ld, %ld, ", tcp->u_arg[0], tcp->u_arg[1]);
296		if (!tcp->u_arg[2])
297			tprintf("NULL");
298		else if (umove(tcp, tcp->u_arg[2], &offset) < 0)
299			tprintf("%#lx", tcp->u_arg[2]);
300		else
301			tprintf("[%lu]", offset);
302		tprintf(", %lu", tcp->u_arg[3]);
303	}
304	return 0;
305}
306
307int
308sys_sendfile64(tcp)
309struct tcb *tcp;
310{
311	if (entering(tcp)) {
312		loff_t offset;
313
314		tprintf("%ld, %ld, ", tcp->u_arg[0], tcp->u_arg[1]);
315		if (!tcp->u_arg[2])
316			tprintf("NULL");
317		else if (umove(tcp, tcp->u_arg[2], &offset) < 0)
318			tprintf("%#lx", tcp->u_arg[2]);
319		else
320			tprintf("[%llu]", (unsigned long long int) offset);
321		tprintf(", %lu", tcp->u_arg[3]);
322	}
323	return 0;
324}
325
326#endif /* LINUX */
327
328#if _LFS64_LARGEFILE || HAVE_LONG_LONG_OFF_T
329int
330sys_pread64(tcp)
331struct tcb *tcp;
332{
333	if (entering(tcp)) {
334		tprintf("%ld, ", tcp->u_arg[0]);
335	} else {
336		ALIGN64 (tcp, 3);
337		if (syserror(tcp))
338			tprintf("%#lx", tcp->u_arg[1]);
339		else
340			printstr(tcp, tcp->u_arg[1], tcp->u_rval);
341		tprintf(", %lu, %#llx", tcp->u_arg[2],
342			LONG_LONG(tcp->u_arg[3], tcp->u_arg[4]));
343	}
344	return 0;
345}
346
347int
348sys_pwrite64(tcp)
349struct tcb *tcp;
350{
351	if (entering(tcp)) {
352		ALIGN64 (tcp, 3);
353		tprintf("%ld, ", tcp->u_arg[0]);
354		printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
355		tprintf(", %lu, %#llx", tcp->u_arg[2],
356			LONG_LONG(tcp->u_arg[3], tcp->u_arg[4]));
357	}
358	return 0;
359}
360#endif
361
362int
363sys_ioctl(tcp)
364struct tcb *tcp;
365{
366	const struct ioctlent *iop;
367
368	if (entering(tcp)) {
369		tprintf("%ld, ", tcp->u_arg[0]);
370		iop = ioctl_lookup(tcp->u_arg[1]);
371		if (iop) {
372			tprintf("%s", iop->symbol);
373			while ((iop = ioctl_next_match(iop)))
374				tprintf(" or %s", iop->symbol);
375		} else
376			tprintf("%#lx", tcp->u_arg[1]);
377		ioctl_decode(tcp, tcp->u_arg[1], tcp->u_arg[2]);
378	}
379	else {
380		int ret;
381		if (!(ret = ioctl_decode(tcp, tcp->u_arg[1], tcp->u_arg[2])))
382			tprintf(", %#lx", tcp->u_arg[2]);
383		else
384			return ret - 1;
385	}
386	return 0;
387}
388