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
31 #include "defs.h"
32 #include <fcntl.h>
33 #include <sys/uio.h>
34
SYS_FUNC(read)35 SYS_FUNC(read)
36 {
37 if (entering(tcp)) {
38 printfd(tcp, tcp->u_arg[0]);
39 tprints(", ");
40 } else {
41 if (syserror(tcp))
42 printaddr(tcp->u_arg[1]);
43 else
44 printstr(tcp, tcp->u_arg[1], tcp->u_rval);
45 tprintf(", %lu", tcp->u_arg[2]);
46 }
47 return 0;
48 }
49
SYS_FUNC(write)50 SYS_FUNC(write)
51 {
52 printfd(tcp, tcp->u_arg[0]);
53 tprints(", ");
54 printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
55 tprintf(", %lu", tcp->u_arg[2]);
56
57 return RVAL_DECODED;
58 }
59
60 /*
61 * data_size limits the cumulative size of printed data.
62 * Example: recvmsg returing a short read.
63 */
64 void
tprint_iov_upto(struct tcb * tcp,unsigned long len,unsigned long addr,int decode_iov,unsigned long data_size)65 tprint_iov_upto(struct tcb *tcp, unsigned long len, unsigned long addr, int decode_iov, unsigned long data_size)
66 {
67 unsigned long iov[2];
68 unsigned long size, cur, end, abbrev_end;
69 const unsigned long sizeof_iov = current_wordsize * 2;
70
71 if (!len) {
72 tprints("[]");
73 return;
74 }
75 size = len * sizeof_iov;
76 end = addr + size;
77 if (!verbose(tcp) || (exiting(tcp) && syserror(tcp)) ||
78 !addr || size / sizeof_iov != len || end < addr) {
79 printaddr(addr);
80 return;
81 }
82 if (abbrev(tcp)) {
83 abbrev_end = addr + max_strlen * sizeof_iov;
84 if (abbrev_end < addr)
85 abbrev_end = end;
86 } else {
87 abbrev_end = end;
88 }
89 tprints("[");
90 for (cur = addr; cur < end; cur += sizeof_iov) {
91 if (cur > addr)
92 tprints(", ");
93 if (cur >= abbrev_end) {
94 tprints("...");
95 break;
96 }
97 if (umove_ulong_array_or_printaddr(tcp, cur, iov,
98 ARRAY_SIZE(iov)))
99 break;
100 tprints("{");
101 if (decode_iov) {
102 unsigned long len = iov[1];
103 if (len > data_size)
104 len = data_size;
105 data_size -= len;
106 printstr(tcp, iov[0], len);
107 } else
108 printaddr(iov[0]);
109 tprintf(", %lu}", iov[1]);
110 }
111 tprints("]");
112 }
113
114 void
tprint_iov(struct tcb * tcp,unsigned long len,unsigned long addr,int decode_iov)115 tprint_iov(struct tcb *tcp, unsigned long len, unsigned long addr, int decode_iov)
116 {
117 tprint_iov_upto(tcp, len, addr, decode_iov, (unsigned long) -1L);
118 }
119
SYS_FUNC(readv)120 SYS_FUNC(readv)
121 {
122 if (entering(tcp)) {
123 printfd(tcp, tcp->u_arg[0]);
124 tprints(", ");
125 } else {
126 tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
127 tprintf(", %lu", tcp->u_arg[2]);
128 }
129 return 0;
130 }
131
SYS_FUNC(writev)132 SYS_FUNC(writev)
133 {
134 printfd(tcp, tcp->u_arg[0]);
135 tprints(", ");
136 tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
137 tprintf(", %lu", tcp->u_arg[2]);
138
139 return RVAL_DECODED;
140 }
141
142 /* The SH4 ABI does allow long longs in odd-numbered registers, but
143 does not allow them to be split between registers and memory - and
144 there are only four argument registers for normal functions. As a
145 result pread takes an extra padding argument before the offset. This
146 was changed late in the 2.4 series (around 2.4.20). */
147 #if defined(SH)
148 #define PREAD_OFFSET_ARG 4
149 #else
150 #define PREAD_OFFSET_ARG 3
151 #endif
152
SYS_FUNC(pread)153 SYS_FUNC(pread)
154 {
155 if (entering(tcp)) {
156 printfd(tcp, tcp->u_arg[0]);
157 tprints(", ");
158 } else {
159 if (syserror(tcp))
160 printaddr(tcp->u_arg[1]);
161 else
162 printstr(tcp, tcp->u_arg[1], tcp->u_rval);
163 tprintf(", %lu, ", tcp->u_arg[2]);
164 printllval(tcp, "%llu", PREAD_OFFSET_ARG);
165 }
166 return 0;
167 }
168
SYS_FUNC(pwrite)169 SYS_FUNC(pwrite)
170 {
171 printfd(tcp, tcp->u_arg[0]);
172 tprints(", ");
173 printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
174 tprintf(", %lu, ", tcp->u_arg[2]);
175 printllval(tcp, "%llu", PREAD_OFFSET_ARG);
176
177 return RVAL_DECODED;
178 }
179
180 static void
print_llu_from_low_high_val(struct tcb * tcp,int arg)181 print_llu_from_low_high_val(struct tcb *tcp, int arg)
182 {
183 #if SIZEOF_LONG == SIZEOF_LONG_LONG
184 # if SUPPORTED_PERSONALITIES > 1
185 # ifdef X86_64
186 if (current_personality != 1)
187 # else
188 if (current_wordsize == sizeof(long))
189 # endif
190 # endif
191 tprintf("%lu", (unsigned long) tcp->u_arg[arg]);
192 # if SUPPORTED_PERSONALITIES > 1
193 else
194 tprintf("%lu",
195 ((unsigned long) tcp->u_arg[arg + 1] << current_wordsize * 8)
196 | (unsigned long) tcp->u_arg[arg]);
197 # endif
198 #else
199 # ifdef X32
200 if (current_personality == 0)
201 tprintf("%llu", (unsigned long long) tcp->ext_arg[arg]);
202 else
203 # endif
204 tprintf("%llu",
205 ((unsigned long long) (unsigned long) tcp->u_arg[arg + 1] << sizeof(long) * 8)
206 | (unsigned long long) (unsigned long) tcp->u_arg[arg]);
207 #endif
208 }
209
SYS_FUNC(preadv)210 SYS_FUNC(preadv)
211 {
212 if (entering(tcp)) {
213 printfd(tcp, tcp->u_arg[0]);
214 tprints(", ");
215 } else {
216 tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
217 tprintf(", %lu, ", tcp->u_arg[2]);
218 print_llu_from_low_high_val(tcp, 3);
219 }
220 return 0;
221 }
222
SYS_FUNC(pwritev)223 SYS_FUNC(pwritev)
224 {
225 printfd(tcp, tcp->u_arg[0]);
226 tprints(", ");
227 tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
228 tprintf(", %lu, ", tcp->u_arg[2]);
229 print_llu_from_low_high_val(tcp, 3);
230
231 return RVAL_DECODED;
232 }
233
234 #include "xlat/splice_flags.h"
235
SYS_FUNC(tee)236 SYS_FUNC(tee)
237 {
238 /* int fd_in */
239 printfd(tcp, tcp->u_arg[0]);
240 tprints(", ");
241 /* int fd_out */
242 printfd(tcp, tcp->u_arg[1]);
243 tprints(", ");
244 /* size_t len */
245 tprintf("%lu, ", tcp->u_arg[2]);
246 /* unsigned int flags */
247 printflags(splice_flags, tcp->u_arg[3], "SPLICE_F_???");
248
249 return RVAL_DECODED;
250 }
251
SYS_FUNC(splice)252 SYS_FUNC(splice)
253 {
254 /* int fd_in */
255 printfd(tcp, tcp->u_arg[0]);
256 tprints(", ");
257 /* loff_t *off_in */
258 printnum_int64(tcp, tcp->u_arg[1], "%" PRIu64);
259 tprints(", ");
260 /* int fd_out */
261 printfd(tcp, tcp->u_arg[2]);
262 tprints(", ");
263 /* loff_t *off_out */
264 printnum_int64(tcp, tcp->u_arg[3], "%" PRIu64);
265 tprints(", ");
266 /* size_t len */
267 tprintf("%lu, ", tcp->u_arg[4]);
268 /* unsigned int flags */
269 printflags(splice_flags, tcp->u_arg[5], "SPLICE_F_???");
270
271 return RVAL_DECODED;
272 }
273
SYS_FUNC(vmsplice)274 SYS_FUNC(vmsplice)
275 {
276 /* int fd */
277 printfd(tcp, tcp->u_arg[0]);
278 tprints(", ");
279 /* const struct iovec *iov, unsigned long nr_segs */
280 tprint_iov(tcp, tcp->u_arg[2], tcp->u_arg[1], 1);
281 tprintf(", %lu, ", tcp->u_arg[2]);
282 /* unsigned int flags */
283 printflags(splice_flags, tcp->u_arg[3], "SPLICE_F_???");
284
285 return RVAL_DECODED;
286 }
287