1 /*
2 * Copyright (c) 2012 Denys Vlasenko <vda.linux@googlemail.com>
3 * Copyright (c) 2012-2015 Dmitry V. Levin <ldv@altlinux.org>
4 * Copyright (c) 2014-2017 The strace developers.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "defs.h"
31
SYS_FUNC(process_vm_readv)32 SYS_FUNC(process_vm_readv)
33 {
34 if (entering(tcp)) {
35 /* arg 1: pid */
36 tprintf("%d, ", (int) tcp->u_arg[0]);
37 } else {
38 kernel_ulong_t local_iovcnt = tcp->u_arg[2];
39 kernel_ulong_t remote_iovcnt = tcp->u_arg[4];
40 kernel_ulong_t flags = tcp->u_arg[5];
41
42 /* arg 2: local iov */
43 tprint_iov_upto(tcp, local_iovcnt, tcp->u_arg[1],
44 syserror(tcp) ? IOV_DECODE_ADDR : IOV_DECODE_STR,
45 tcp->u_rval);
46 /* arg 3: local iovcnt */
47 tprintf(", %" PRI_klu ", ", local_iovcnt);
48 /* arg 4: remote iov */
49 tprint_iov(tcp, remote_iovcnt, tcp->u_arg[3],
50 IOV_DECODE_ADDR);
51 /* arg 5: remote iovcnt */
52 /* arg 6: flags */
53 tprintf(", %" PRI_klu ", %" PRI_klu, remote_iovcnt, flags);
54 }
55 return 0;
56 }
57
SYS_FUNC(process_vm_writev)58 SYS_FUNC(process_vm_writev)
59 {
60 kernel_ulong_t local_iovcnt = tcp->u_arg[2];
61 kernel_ulong_t remote_iovcnt = tcp->u_arg[4];
62 kernel_ulong_t flags = tcp->u_arg[5];
63
64 /* arg 1: pid */
65 tprintf("%d, ", (int) tcp->u_arg[0]);
66 /* arg 2: local iov */
67 tprint_iov(tcp, local_iovcnt, tcp->u_arg[1], IOV_DECODE_STR);
68 /* arg 3: local iovcnt */
69 tprintf(", %" PRI_klu ", ", local_iovcnt);
70 /* arg 4: remote iov */
71 tprint_iov(tcp, remote_iovcnt, tcp->u_arg[3], IOV_DECODE_ADDR);
72 /* arg 5: remote iovcnt */
73 /* arg 6: flags */
74 tprintf(", %" PRI_klu ", %" PRI_klu, remote_iovcnt, flags);
75
76 return RVAL_DECODED;
77 }
78