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Wichert Akkerman76baf7c1999-02-19 00:21:36 +00001/*
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>
Wichert Akkerman4dc8a2a1999-12-23 14:20:14 +00005 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Linux for s390 port by D.J. Barrow
8 * <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com>
Wichert Akkermanccef6372002-05-01 16:39:22 +00009 * Copyright (c) 2000 PocketPenguins Inc. Linux for Hitachi SuperH
10 * port by Greg Banks <gbanks@pocketpenguins.com>
Wichert Akkerman4dc8a2a1999-12-23 14:20:14 +000011 *
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000012 * All rights reserved.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. The name of the author may not be used to endorse or promote products
23 * derived from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000035 */
36
37#include "defs.h"
Dmitry V. Levin6eee4e02014-12-11 19:25:02 +000038
Dmitry V. Levinc41808b2013-03-18 00:52:29 +000039#ifdef HAVE_ELF_H
40# include <elf.h>
41#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000042
Dmitry V. Levin6eee4e02014-12-11 19:25:02 +000043#include "xlat/nt_descriptor_types.h"
44
Dmitry V. Levin7211dbc2015-02-28 12:20:21 +000045#include "regs.h"
Dmitry V. Levinfadf3792015-02-13 00:26:38 +000046#include "ptrace.h"
Dmitry V. Levin6eee4e02014-12-11 19:25:02 +000047#include "xlat/ptrace_cmds.h"
48#include "xlat/ptrace_setoptions_flags.h"
49
Denys Vlasenko513e9c22012-03-21 14:39:22 +010050#define uoff(member) offsetof(struct user, member)
Dmitry V. Levinc6ce4fd2014-12-11 19:25:02 +000051#define XLAT_UOFF(member) { uoff(member), "offsetof(struct user, " #member ")" }
Denys Vlasenko513e9c22012-03-21 14:39:22 +010052
Dmitry V. Levin8c0ef942014-12-11 19:25:02 +000053static const struct xlat struct_user_offsets[] = {
Dmitry V. Levinfced7b02014-12-11 19:25:02 +000054#include "userent.h"
Dmitry V. Levin59452732014-02-05 02:20:51 +000055 XLAT_END
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000056};
57
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +000058static void
59print_user_offset_addr(const unsigned long addr)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000060{
Roland McGrathd9f816f2004-09-04 03:39:20 +000061 const struct xlat *x;
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +000062
63 for (x = struct_user_offsets; x->str; ++x) {
64 if (x->val >= addr)
65 break;
66 }
67
68 if (!x->str) {
69 printaddr(addr);
70 } else if (x->val > addr) {
71 if (x == struct_user_offsets) {
72 printaddr(addr);
73 } else {
74 --x;
75 tprintf("%s + %lu",
76 x->str, addr - (unsigned long) x->val);
77 }
78 } else {
79 tprints(x->str);
80 }
81}
82
83SYS_FUNC(ptrace)
84{
Dmitry V. Levin73a8e972016-05-12 14:45:38 +000085 const unsigned long request = tcp->u_arg[0];
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +000086 const int pid = tcp->u_arg[1];
87 const unsigned long addr = tcp->u_arg[2];
88 const unsigned long data = tcp->u_arg[3];
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000089
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000090 if (entering(tcp)) {
Dmitry V. Levin73a8e972016-05-12 14:45:38 +000091 /* request */
92 printxval64(ptrace_cmds, request, "PTRACE_???");
93
94 /* pid */
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +000095 tprintf(", %d, ", pid);
Denys Vlasenkobe994972013-02-13 16:10:10 +010096
Dmitry V. Levin73a8e972016-05-12 14:45:38 +000097 /* addr */
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +000098 switch (request) {
99 case PTRACE_PEEKUSER:
100 case PTRACE_POKEUSER:
101 print_user_offset_addr(addr);
102 break;
103 case PTRACE_GETREGSET:
104 case PTRACE_SETREGSET:
105 printxval(nt_descriptor_types, addr, "NT_???");
106 break;
107 default:
Dmitry V. Levin14446eb2015-07-17 21:12:05 +0000108 printaddr(addr);
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000109 }
110
Dmitry V. Levin14446eb2015-07-17 21:12:05 +0000111 tprints(", ");
Denys Vlasenkobe994972013-02-13 16:10:10 +0100112
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000113 switch (request) {
Denys Vlasenko3e3490a2012-03-17 01:27:37 +0100114#ifndef IA64
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000115 case PTRACE_PEEKDATA:
116 case PTRACE_PEEKTEXT:
117 case PTRACE_PEEKUSER:
118 break;
Denys Vlasenko3e3490a2012-03-17 01:27:37 +0100119#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000120 case PTRACE_CONT:
121 case PTRACE_SINGLESTEP:
122 case PTRACE_SYSCALL:
123 case PTRACE_DETACH:
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000124 printsignal(data);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000125 break;
Denys Vlasenkof535b542009-01-13 18:30:55 +0000126 case PTRACE_SETOPTIONS:
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000127 printflags(ptrace_setoptions_flags, data, "PTRACE_O_???");
Denys Vlasenkof535b542009-01-13 18:30:55 +0000128 break;
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000129 case PTRACE_SETSIGINFO:
130 printsiginfo_at(tcp, data);
Denys Vlasenkof535b542009-01-13 18:30:55 +0000131 break;
Denys Vlasenkobe994972013-02-13 16:10:10 +0100132 case PTRACE_SETREGSET:
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000133 tprint_iov(tcp, /*len:*/ 1, data, /*as string:*/ 0);
Denys Vlasenkobe994972013-02-13 16:10:10 +0100134 break;
Dmitry V. Levinfadf3792015-02-13 00:26:38 +0000135 case PTRACE_GETSIGINFO:
136 case PTRACE_GETREGSET:
137 /* Don't print anything, do it at syscall return. */
138 break;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000139 default:
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000140 printaddr(data);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000141 break;
142 }
143 } else {
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000144 switch (request) {
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000145 case PTRACE_PEEKDATA:
146 case PTRACE_PEEKTEXT:
147 case PTRACE_PEEKUSER:
Denys Vlasenko3e3490a2012-03-17 01:27:37 +0100148#ifdef IA64
Roland McGrath1e868062007-11-19 22:11:45 +0000149 return RVAL_HEX;
Denys Vlasenko3e3490a2012-03-17 01:27:37 +0100150#else
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000151 printnum_ptr(tcp, data);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000152 break;
Denys Vlasenko3e3490a2012-03-17 01:27:37 +0100153#endif
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000154 case PTRACE_GETSIGINFO:
155 printsiginfo_at(tcp, data);
Denys Vlasenkof535b542009-01-13 18:30:55 +0000156 break;
Denys Vlasenkobe994972013-02-13 16:10:10 +0100157 case PTRACE_GETREGSET:
Dmitry V. Levinccdc82a2016-04-01 00:28:33 +0000158 tprint_iov(tcp, /*len:*/ 1, data, /*as string:*/ 0);
Denys Vlasenkobe994972013-02-13 16:10:10 +0100159 break;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000160 }
161 }
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000162 return 0;
163}