Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 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> |
Wichert Akkerman | 4dc8a2a | 1999-12-23 14:20:14 +0000 | [diff] [blame] | 5 | * 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 Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * 3. The name of the author may not be used to endorse or promote products |
| 20 | * derived from this software without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 23 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 24 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 25 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 26 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 27 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 31 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 32 | */ |
| 33 | |
| 34 | #include "defs.h" |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 35 | #include <sys/user.h> |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 36 | #include <sys/param.h> |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 37 | |
Wichert Akkerman | 15dea97 | 1999-10-06 13:06:34 +0000 | [diff] [blame] | 38 | #ifdef HAVE_SYS_REG_H |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 39 | # include <sys/reg.h> |
| 40 | # ifndef PTRACE_PEEKUSR |
| 41 | # define PTRACE_PEEKUSR PTRACE_PEEKUSER |
| 42 | # endif |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 43 | #elif defined(HAVE_LINUX_PTRACE_H) |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 44 | # undef PTRACE_SYSCALL |
Roland McGrath | ce9f074 | 2004-03-01 21:29:22 +0000 | [diff] [blame] | 45 | # ifdef HAVE_STRUCT_IA64_FPREG |
| 46 | # define ia64_fpreg XXX_ia64_fpreg |
| 47 | # endif |
| 48 | # ifdef HAVE_STRUCT_PT_ALL_USER_REGS |
| 49 | # define pt_all_user_regs XXX_pt_all_user_regs |
| 50 | # endif |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 51 | # include <linux/ptrace.h> |
Roland McGrath | ce9f074 | 2004-03-01 21:29:22 +0000 | [diff] [blame] | 52 | # undef ia64_fpreg |
| 53 | # undef pt_all_user_regs |
Wichert Akkerman | 15dea97 | 1999-10-06 13:06:34 +0000 | [diff] [blame] | 54 | #endif |
| 55 | |
Denys Vlasenko | 8470374 | 2012-02-25 02:38:52 +0100 | [diff] [blame] | 56 | #if defined(SPARC64) |
Roland McGrath | 6d1a65c | 2004-07-12 07:44:08 +0000 | [diff] [blame] | 57 | # undef PTRACE_GETREGS |
| 58 | # define PTRACE_GETREGS PTRACE_GETREGS64 |
| 59 | # undef PTRACE_SETREGS |
| 60 | # define PTRACE_SETREGS PTRACE_SETREGS64 |
Denys Vlasenko | 8470374 | 2012-02-25 02:38:52 +0100 | [diff] [blame] | 61 | #endif |
Roland McGrath | 6d1a65c | 2004-07-12 07:44:08 +0000 | [diff] [blame] | 62 | |
Denys Vlasenko | 8470374 | 2012-02-25 02:38:52 +0100 | [diff] [blame] | 63 | #if defined(IA64) |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 64 | # include <asm/ptrace_offsets.h> |
| 65 | # include <asm/rse.h> |
| 66 | #endif |
| 67 | |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 68 | #ifndef ERESTARTSYS |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 69 | # define ERESTARTSYS 512 |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 70 | #endif |
Denys Vlasenko | 3da9693 | 2012-03-17 03:17:15 +0100 | [diff] [blame] | 71 | #ifndef ERESTARTNOINTR |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 72 | # define ERESTARTNOINTR 513 |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 73 | #endif |
Denys Vlasenko | 3da9693 | 2012-03-17 03:17:15 +0100 | [diff] [blame] | 74 | #ifndef ERESTARTNOHAND |
| 75 | # define ERESTARTNOHAND 514 /* restart if no handler */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 76 | #endif |
Denys Vlasenko | 3da9693 | 2012-03-17 03:17:15 +0100 | [diff] [blame] | 77 | #ifndef ERESTART_RESTARTBLOCK |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 78 | # define ERESTART_RESTARTBLOCK 516 /* restart by calling sys_restart_syscall */ |
Roland McGrath | 9c555e7 | 2003-07-09 09:47:59 +0000 | [diff] [blame] | 79 | #endif |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 80 | |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 81 | #ifndef NSIG |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 82 | # warning: NSIG is not defined, using 32 |
| 83 | # define NSIG 32 |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 84 | #endif |
| 85 | #ifdef ARM |
Denys Vlasenko | 041b3ee | 2011-08-18 12:48:56 +0200 | [diff] [blame] | 86 | /* Ugh. Is this really correct? ARM has no RT signals?! */ |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 87 | # undef NSIG |
| 88 | # define NSIG 32 |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 89 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 90 | |
| 91 | #include "syscall.h" |
| 92 | |
| 93 | /* Define these shorthand notations to simplify the syscallent files. */ |
Roland McGrath | 2fe7b13 | 2005-07-05 03:25:35 +0000 | [diff] [blame] | 94 | #define TD TRACE_DESC |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 95 | #define TF TRACE_FILE |
| 96 | #define TI TRACE_IPC |
| 97 | #define TN TRACE_NETWORK |
| 98 | #define TP TRACE_PROCESS |
| 99 | #define TS TRACE_SIGNAL |
Dmitry V. Levin | 50a218d | 2011-01-18 17:36:20 +0000 | [diff] [blame] | 100 | #define NF SYSCALL_NEVER_FAILS |
Denys Vlasenko | ac1ce77 | 2011-08-23 13:24:17 +0200 | [diff] [blame] | 101 | #define MA MAX_ARGS |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 102 | |
Roland McGrath | ee36ce1 | 2004-09-04 03:53:10 +0000 | [diff] [blame] | 103 | static const struct sysent sysent0[] = { |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 104 | #include "syscallent.h" |
| 105 | }; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 106 | |
| 107 | #if SUPPORTED_PERSONALITIES >= 2 |
Roland McGrath | ee36ce1 | 2004-09-04 03:53:10 +0000 | [diff] [blame] | 108 | static const struct sysent sysent1[] = { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 109 | # include "syscallent1.h" |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 110 | }; |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 111 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 112 | |
| 113 | #if SUPPORTED_PERSONALITIES >= 3 |
Roland McGrath | ee36ce1 | 2004-09-04 03:53:10 +0000 | [diff] [blame] | 114 | static const struct sysent sysent2[] = { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 115 | # include "syscallent2.h" |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 116 | }; |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 117 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 118 | |
| 119 | /* Now undef them since short defines cause wicked namespace pollution. */ |
Roland McGrath | 2fe7b13 | 2005-07-05 03:25:35 +0000 | [diff] [blame] | 120 | #undef TD |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 121 | #undef TF |
| 122 | #undef TI |
| 123 | #undef TN |
| 124 | #undef TP |
| 125 | #undef TS |
Dmitry V. Levin | 50a218d | 2011-01-18 17:36:20 +0000 | [diff] [blame] | 126 | #undef NF |
Denys Vlasenko | ac1ce77 | 2011-08-23 13:24:17 +0200 | [diff] [blame] | 127 | #undef MA |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 128 | |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 129 | /* |
| 130 | * `ioctlent.h' may be generated from `ioctlent.raw' by the auxiliary |
| 131 | * program `ioctlsort', such that the list is sorted by the `code' field. |
| 132 | * This has the side-effect of resolving the _IO.. macros into |
| 133 | * plain integers, eliminating the need to include here everything |
| 134 | * in "/usr/include". |
| 135 | */ |
| 136 | |
Roland McGrath | ee36ce1 | 2004-09-04 03:53:10 +0000 | [diff] [blame] | 137 | static const char *const errnoent0[] = { |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 138 | #include "errnoent.h" |
| 139 | }; |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 140 | static const char *const signalent0[] = { |
| 141 | #include "signalent.h" |
| 142 | }; |
| 143 | static const struct ioctlent ioctlent0[] = { |
| 144 | #include "ioctlent.h" |
| 145 | }; |
| 146 | enum { nsyscalls0 = ARRAY_SIZE(sysent0) }; |
| 147 | enum { nerrnos0 = ARRAY_SIZE(errnoent0) }; |
| 148 | enum { nsignals0 = ARRAY_SIZE(signalent0) }; |
| 149 | enum { nioctlents0 = ARRAY_SIZE(ioctlent0) }; |
| 150 | int qual_flags0[MAX_QUALS]; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 151 | |
| 152 | #if SUPPORTED_PERSONALITIES >= 2 |
Roland McGrath | ee36ce1 | 2004-09-04 03:53:10 +0000 | [diff] [blame] | 153 | static const char *const errnoent1[] = { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 154 | # include "errnoent1.h" |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 155 | }; |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 156 | static const char *const signalent1[] = { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 157 | # include "signalent1.h" |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 158 | }; |
| 159 | static const struct ioctlent ioctlent1[] = { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 160 | # include "ioctlent1.h" |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 161 | }; |
| 162 | enum { nsyscalls1 = ARRAY_SIZE(sysent1) }; |
| 163 | enum { nerrnos1 = ARRAY_SIZE(errnoent1) }; |
| 164 | enum { nsignals1 = ARRAY_SIZE(signalent1) }; |
| 165 | enum { nioctlents1 = ARRAY_SIZE(ioctlent1) }; |
| 166 | int qual_flags1[MAX_QUALS]; |
| 167 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 168 | |
| 169 | #if SUPPORTED_PERSONALITIES >= 3 |
Roland McGrath | ee36ce1 | 2004-09-04 03:53:10 +0000 | [diff] [blame] | 170 | static const char *const errnoent2[] = { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 171 | # include "errnoent2.h" |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 172 | }; |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 173 | static const char *const signalent2[] = { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 174 | # include "signalent2.h" |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 175 | }; |
| 176 | static const struct ioctlent ioctlent2[] = { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 177 | # include "ioctlent2.h" |
Denys Vlasenko | 39fca62 | 2011-08-20 02:12:33 +0200 | [diff] [blame] | 178 | }; |
| 179 | enum { nsyscalls2 = ARRAY_SIZE(sysent2) }; |
| 180 | enum { nerrnos2 = ARRAY_SIZE(errnoent2) }; |
| 181 | enum { nsignals2 = ARRAY_SIZE(signalent2) }; |
| 182 | enum { nioctlents2 = ARRAY_SIZE(ioctlent2) }; |
| 183 | int qual_flags2[MAX_QUALS]; |
| 184 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 185 | |
Denys Vlasenko | 9fd4f96 | 2012-03-19 09:36:42 +0100 | [diff] [blame] | 186 | const struct sysent *sysent = sysent0; |
| 187 | const char *const *errnoent = errnoent0; |
| 188 | const char *const *signalent = signalent0; |
| 189 | const struct ioctlent *ioctlent = ioctlent0; |
| 190 | unsigned nsyscalls = nsyscalls0; |
| 191 | unsigned nerrnos = nerrnos0; |
| 192 | unsigned nsignals = nsignals0; |
| 193 | unsigned nioctlents = nioctlents0; |
| 194 | int *qual_flags = qual_flags0; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 195 | |
Denys Vlasenko | 9fd4f96 | 2012-03-19 09:36:42 +0100 | [diff] [blame] | 196 | #if SUPPORTED_PERSONALITIES > 1 |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 197 | int current_personality; |
| 198 | |
Roland McGrath | 4b2dcca | 2006-01-12 10:18:53 +0000 | [diff] [blame] | 199 | const int personality_wordsize[SUPPORTED_PERSONALITIES] = { |
| 200 | PERSONALITY0_WORDSIZE, |
Roland McGrath | 4b2dcca | 2006-01-12 10:18:53 +0000 | [diff] [blame] | 201 | PERSONALITY1_WORDSIZE, |
Denys Vlasenko | 9fd4f96 | 2012-03-19 09:36:42 +0100 | [diff] [blame] | 202 | # if SUPPORTED_PERSONALITIES > 2 |
Roland McGrath | 4b2dcca | 2006-01-12 10:18:53 +0000 | [diff] [blame] | 203 | PERSONALITY2_WORDSIZE, |
Denys Vlasenko | 9fd4f96 | 2012-03-19 09:36:42 +0100 | [diff] [blame] | 204 | # endif |
Denys Vlasenko | 5c774b2 | 2011-08-20 01:50:09 +0200 | [diff] [blame] | 205 | }; |
Roland McGrath | 4b2dcca | 2006-01-12 10:18:53 +0000 | [diff] [blame] | 206 | |
Denys Vlasenko | 5c774b2 | 2011-08-20 01:50:09 +0200 | [diff] [blame] | 207 | void |
Dmitry V. Levin | 3abe8b2 | 2006-12-20 22:37:21 +0000 | [diff] [blame] | 208 | set_personality(int personality) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 209 | { |
| 210 | switch (personality) { |
| 211 | case 0: |
| 212 | errnoent = errnoent0; |
| 213 | nerrnos = nerrnos0; |
| 214 | sysent = sysent0; |
| 215 | nsyscalls = nsyscalls0; |
| 216 | ioctlent = ioctlent0; |
| 217 | nioctlents = nioctlents0; |
| 218 | signalent = signalent0; |
| 219 | nsignals = nsignals0; |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 220 | qual_flags = qual_flags0; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 221 | break; |
| 222 | |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 223 | case 1: |
| 224 | errnoent = errnoent1; |
| 225 | nerrnos = nerrnos1; |
| 226 | sysent = sysent1; |
| 227 | nsyscalls = nsyscalls1; |
| 228 | ioctlent = ioctlent1; |
| 229 | nioctlents = nioctlents1; |
| 230 | signalent = signalent1; |
| 231 | nsignals = nsignals1; |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 232 | qual_flags = qual_flags1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 233 | break; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 234 | |
Denys Vlasenko | 9fd4f96 | 2012-03-19 09:36:42 +0100 | [diff] [blame] | 235 | # if SUPPORTED_PERSONALITIES >= 3 |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 236 | case 2: |
| 237 | errnoent = errnoent2; |
| 238 | nerrnos = nerrnos2; |
| 239 | sysent = sysent2; |
| 240 | nsyscalls = nsyscalls2; |
| 241 | ioctlent = ioctlent2; |
| 242 | nioctlents = nioctlents2; |
| 243 | signalent = signalent2; |
| 244 | nsignals = nsignals2; |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 245 | qual_flags = qual_flags2; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 246 | break; |
Denys Vlasenko | 9fd4f96 | 2012-03-19 09:36:42 +0100 | [diff] [blame] | 247 | # endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | current_personality = personality; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 251 | } |
| 252 | |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 253 | static void |
| 254 | update_personality(struct tcb *tcp, int personality) |
| 255 | { |
| 256 | if (personality == current_personality) |
| 257 | return; |
| 258 | set_personality(personality); |
| 259 | |
| 260 | if (personality == tcp->currpers) |
| 261 | return; |
| 262 | tcp->currpers = personality; |
| 263 | |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 264 | # if defined(POWERPC64) || defined(X86_64) |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 265 | if (!qflag) { |
| 266 | static const char *const names[] = {"64 bit", "32 bit"}; |
| 267 | fprintf(stderr, "[ Process PID=%d runs in %s mode. ]\n", |
| 268 | tcp->pid, names[personality]); |
| 269 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 270 | # endif |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 271 | } |
| 272 | #endif |
Roland McGrath | e10e62a | 2004-09-04 04:20:43 +0000 | [diff] [blame] | 273 | |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 274 | static int qual_syscall(), qual_signal(), qual_fault(), qual_desc(); |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 275 | |
Roland McGrath | e10e62a | 2004-09-04 04:20:43 +0000 | [diff] [blame] | 276 | static const struct qual_options { |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 277 | int bitflag; |
Dmitry V. Levin | 30145dd | 2010-09-06 22:08:24 +0000 | [diff] [blame] | 278 | const char *option_name; |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 279 | int (*qualify)(const char *, int, int); |
Dmitry V. Levin | 30145dd | 2010-09-06 22:08:24 +0000 | [diff] [blame] | 280 | const char *argument_name; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 281 | } qual_options[] = { |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 282 | { QUAL_TRACE, "trace", qual_syscall, "system call" }, |
| 283 | { QUAL_TRACE, "t", qual_syscall, "system call" }, |
| 284 | { QUAL_ABBREV, "abbrev", qual_syscall, "system call" }, |
| 285 | { QUAL_ABBREV, "a", qual_syscall, "system call" }, |
| 286 | { QUAL_VERBOSE, "verbose", qual_syscall, "system call" }, |
| 287 | { QUAL_VERBOSE, "v", qual_syscall, "system call" }, |
| 288 | { QUAL_RAW, "raw", qual_syscall, "system call" }, |
| 289 | { QUAL_RAW, "x", qual_syscall, "system call" }, |
| 290 | { QUAL_SIGNAL, "signal", qual_signal, "signal" }, |
| 291 | { QUAL_SIGNAL, "signals", qual_signal, "signal" }, |
| 292 | { QUAL_SIGNAL, "s", qual_signal, "signal" }, |
| 293 | { QUAL_FAULT, "fault", qual_fault, "fault" }, |
| 294 | { QUAL_FAULT, "faults", qual_fault, "fault" }, |
| 295 | { QUAL_FAULT, "m", qual_fault, "fault" }, |
| 296 | { QUAL_READ, "read", qual_desc, "descriptor" }, |
| 297 | { QUAL_READ, "reads", qual_desc, "descriptor" }, |
| 298 | { QUAL_READ, "r", qual_desc, "descriptor" }, |
| 299 | { QUAL_WRITE, "write", qual_desc, "descriptor" }, |
| 300 | { QUAL_WRITE, "writes", qual_desc, "descriptor" }, |
| 301 | { QUAL_WRITE, "w", qual_desc, "descriptor" }, |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 302 | { 0, NULL, NULL, NULL }, |
| 303 | }; |
| 304 | |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 305 | static void |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 306 | qualify_one(int n, int bitflag, int not, int pers) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 307 | { |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 308 | if (pers == 0 || pers < 0) { |
| 309 | if (not) |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 310 | qual_flags0[n] &= ~bitflag; |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 311 | else |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 312 | qual_flags0[n] |= bitflag; |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | #if SUPPORTED_PERSONALITIES >= 2 |
| 316 | if (pers == 1 || pers < 0) { |
| 317 | if (not) |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 318 | qual_flags1[n] &= ~bitflag; |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 319 | else |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 320 | qual_flags1[n] |= bitflag; |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 321 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 322 | #endif |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 323 | |
| 324 | #if SUPPORTED_PERSONALITIES >= 3 |
| 325 | if (pers == 2 || pers < 0) { |
| 326 | if (not) |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 327 | qual_flags2[n] &= ~bitflag; |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 328 | else |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 329 | qual_flags2[n] |= bitflag; |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 330 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 331 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | static int |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 335 | qual_syscall(const char *s, int bitflag, int not) |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 336 | { |
| 337 | int i; |
Roland McGrath | fe6b352 | 2005-02-02 04:40:11 +0000 | [diff] [blame] | 338 | int rc = -1; |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 339 | |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 340 | if (isdigit((unsigned char)*s)) { |
| 341 | int i = atoi(s); |
Dmitry V. Levin | c18c703 | 2007-08-22 21:43:30 +0000 | [diff] [blame] | 342 | if (i < 0 || i >= MAX_QUALS) |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 343 | return -1; |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 344 | qualify_one(i, bitflag, not, -1); |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 345 | return 0; |
Roland McGrath | 48a035f | 2006-01-12 09:45:56 +0000 | [diff] [blame] | 346 | } |
Dmitry V. Levin | c18c703 | 2007-08-22 21:43:30 +0000 | [diff] [blame] | 347 | for (i = 0; i < nsyscalls0; i++) |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 348 | if (strcmp(s, sysent0[i].sys_name) == 0) { |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 349 | qualify_one(i, bitflag, not, 0); |
Roland McGrath | fe6b352 | 2005-02-02 04:40:11 +0000 | [diff] [blame] | 350 | rc = 0; |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 351 | } |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 352 | |
| 353 | #if SUPPORTED_PERSONALITIES >= 2 |
Dmitry V. Levin | c18c703 | 2007-08-22 21:43:30 +0000 | [diff] [blame] | 354 | for (i = 0; i < nsyscalls1; i++) |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 355 | if (strcmp(s, sysent1[i].sys_name) == 0) { |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 356 | qualify_one(i, bitflag, not, 1); |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 357 | rc = 0; |
| 358 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 359 | #endif |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 360 | |
| 361 | #if SUPPORTED_PERSONALITIES >= 3 |
Dmitry V. Levin | c18c703 | 2007-08-22 21:43:30 +0000 | [diff] [blame] | 362 | for (i = 0; i < nsyscalls2; i++) |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 363 | if (strcmp(s, sysent2[i].sys_name) == 0) { |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 364 | qualify_one(i, bitflag, not, 2); |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 365 | rc = 0; |
| 366 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 367 | #endif |
Dmitry V. Levin | c18c703 | 2007-08-22 21:43:30 +0000 | [diff] [blame] | 368 | |
Roland McGrath | fe6b352 | 2005-02-02 04:40:11 +0000 | [diff] [blame] | 369 | return rc; |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 370 | } |
| 371 | |
| 372 | static int |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 373 | qual_signal(const char *s, int bitflag, int not) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 374 | { |
| 375 | int i; |
| 376 | char buf[32]; |
| 377 | |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 378 | if (isdigit((unsigned char)*s)) { |
| 379 | int signo = atoi(s); |
| 380 | if (signo < 0 || signo >= MAX_QUALS) |
| 381 | return -1; |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 382 | qualify_one(signo, bitflag, not, -1); |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 383 | return 0; |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 384 | } |
Roland McGrath | d62b671 | 2004-03-02 06:52:01 +0000 | [diff] [blame] | 385 | if (strlen(s) >= sizeof buf) |
Roland McGrath | fe6b352 | 2005-02-02 04:40:11 +0000 | [diff] [blame] | 386 | return -1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 387 | strcpy(buf, s); |
| 388 | s = buf; |
Dmitry V. Levin | 30145dd | 2010-09-06 22:08:24 +0000 | [diff] [blame] | 389 | if (strncasecmp(s, "SIG", 3) == 0) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 390 | s += 3; |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 391 | for (i = 0; i <= NSIG; i++) |
Dmitry V. Levin | 30145dd | 2010-09-06 22:08:24 +0000 | [diff] [blame] | 392 | if (strcasecmp(s, signame(i) + 3) == 0) { |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 393 | qualify_one(i, bitflag, not, -1); |
Roland McGrath | 76421df | 2005-02-02 03:51:18 +0000 | [diff] [blame] | 394 | return 0; |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 395 | } |
Roland McGrath | 76421df | 2005-02-02 03:51:18 +0000 | [diff] [blame] | 396 | return -1; |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | static int |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 400 | qual_fault(const char *s, int bitflag, int not) |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 401 | { |
| 402 | return -1; |
| 403 | } |
| 404 | |
| 405 | static int |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 406 | qual_desc(const char *s, int bitflag, int not) |
Roland McGrath | 9797ceb | 2002-12-30 10:23:00 +0000 | [diff] [blame] | 407 | { |
Roland McGrath | 48a035f | 2006-01-12 09:45:56 +0000 | [diff] [blame] | 408 | if (isdigit((unsigned char)*s)) { |
Roland McGrath | fe6b352 | 2005-02-02 04:40:11 +0000 | [diff] [blame] | 409 | int desc = atoi(s); |
| 410 | if (desc < 0 || desc >= MAX_QUALS) |
| 411 | return -1; |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 412 | qualify_one(desc, bitflag, not, -1); |
Roland McGrath | 2b61902 | 2003-04-10 18:58:20 +0000 | [diff] [blame] | 413 | return 0; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 414 | } |
| 415 | return -1; |
| 416 | } |
| 417 | |
| 418 | static int |
Dmitry V. Levin | 30145dd | 2010-09-06 22:08:24 +0000 | [diff] [blame] | 419 | lookup_class(const char *s) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 420 | { |
| 421 | if (strcmp(s, "file") == 0) |
| 422 | return TRACE_FILE; |
| 423 | if (strcmp(s, "ipc") == 0) |
| 424 | return TRACE_IPC; |
| 425 | if (strcmp(s, "network") == 0) |
| 426 | return TRACE_NETWORK; |
| 427 | if (strcmp(s, "process") == 0) |
| 428 | return TRACE_PROCESS; |
| 429 | if (strcmp(s, "signal") == 0) |
| 430 | return TRACE_SIGNAL; |
Roland McGrath | 2fe7b13 | 2005-07-05 03:25:35 +0000 | [diff] [blame] | 431 | if (strcmp(s, "desc") == 0) |
| 432 | return TRACE_DESC; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 433 | return -1; |
| 434 | } |
| 435 | |
| 436 | void |
Dmitry V. Levin | 30145dd | 2010-09-06 22:08:24 +0000 | [diff] [blame] | 437 | qualify(const char *s) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 438 | { |
Roland McGrath | e10e62a | 2004-09-04 04:20:43 +0000 | [diff] [blame] | 439 | const struct qual_options *opt; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 440 | int not; |
Dmitry V. Levin | 30145dd | 2010-09-06 22:08:24 +0000 | [diff] [blame] | 441 | char *copy; |
| 442 | const char *p; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 443 | int i, n; |
| 444 | |
| 445 | opt = &qual_options[0]; |
| 446 | for (i = 0; (p = qual_options[i].option_name); i++) { |
| 447 | n = strlen(p); |
| 448 | if (strncmp(s, p, n) == 0 && s[n] == '=') { |
| 449 | opt = &qual_options[i]; |
| 450 | s += n + 1; |
| 451 | break; |
| 452 | } |
| 453 | } |
| 454 | not = 0; |
| 455 | if (*s == '!') { |
| 456 | not = 1; |
| 457 | s++; |
| 458 | } |
| 459 | if (strcmp(s, "none") == 0) { |
| 460 | not = 1 - not; |
| 461 | s = "all"; |
| 462 | } |
| 463 | if (strcmp(s, "all") == 0) { |
| 464 | for (i = 0; i < MAX_QUALS; i++) { |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 465 | qualify_one(i, opt->bitflag, not, -1); |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 466 | } |
| 467 | return; |
| 468 | } |
| 469 | for (i = 0; i < MAX_QUALS; i++) { |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 470 | qualify_one(i, opt->bitflag, !not, -1); |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 471 | } |
Denys Vlasenko | 5d64581 | 2011-08-20 12:48:18 +0200 | [diff] [blame] | 472 | copy = strdup(s); |
Denys Vlasenko | 1d46ba5 | 2011-08-31 14:00:02 +0200 | [diff] [blame] | 473 | if (!copy) |
| 474 | die_out_of_memory(); |
Dmitry V. Levin | 30145dd | 2010-09-06 22:08:24 +0000 | [diff] [blame] | 475 | for (p = strtok(copy, ","); p; p = strtok(NULL, ",")) { |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 476 | if (opt->bitflag == QUAL_TRACE && (n = lookup_class(p)) > 0) { |
Dmitry V. Levin | c18c703 | 2007-08-22 21:43:30 +0000 | [diff] [blame] | 477 | for (i = 0; i < nsyscalls0; i++) |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 478 | if (sysent0[i].sys_flags & n) |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 479 | qualify_one(i, opt->bitflag, not, 0); |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 480 | |
| 481 | #if SUPPORTED_PERSONALITIES >= 2 |
Dmitry V. Levin | c18c703 | 2007-08-22 21:43:30 +0000 | [diff] [blame] | 482 | for (i = 0; i < nsyscalls1; i++) |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 483 | if (sysent1[i].sys_flags & n) |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 484 | qualify_one(i, opt->bitflag, not, 1); |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 485 | #endif |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 486 | |
| 487 | #if SUPPORTED_PERSONALITIES >= 3 |
Dmitry V. Levin | c18c703 | 2007-08-22 21:43:30 +0000 | [diff] [blame] | 488 | for (i = 0; i < nsyscalls2; i++) |
Roland McGrath | 138c6a3 | 2006-01-12 09:50:49 +0000 | [diff] [blame] | 489 | if (sysent2[i].sys_flags & n) |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 490 | qualify_one(i, opt->bitflag, not, 2); |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 491 | #endif |
Dmitry V. Levin | c18c703 | 2007-08-22 21:43:30 +0000 | [diff] [blame] | 492 | |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 493 | continue; |
| 494 | } |
Dmitry V. Levin | 35d0572 | 2010-09-15 16:18:20 +0000 | [diff] [blame] | 495 | if (opt->qualify(p, opt->bitflag, not)) { |
Denys Vlasenko | 4c65c44 | 2012-03-08 11:54:10 +0100 | [diff] [blame] | 496 | error_msg_and_die("invalid %s '%s'", |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 497 | opt->argument_name, p); |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 498 | } |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 499 | } |
Dmitry V. Levin | 30145dd | 2010-09-06 22:08:24 +0000 | [diff] [blame] | 500 | free(copy); |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 501 | return; |
| 502 | } |
| 503 | |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 504 | #ifdef SYS_socket_subcall |
Roland McGrath | a4d4853 | 2005-06-08 20:45:28 +0000 | [diff] [blame] | 505 | static void |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 506 | decode_socket_subcall(struct tcb *tcp) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 507 | { |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 508 | unsigned long addr; |
| 509 | unsigned int i, size; |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 510 | |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 511 | if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= SYS_socket_nsubcalls) |
| 512 | return; |
| 513 | |
| 514 | tcp->scno = SYS_socket_subcall + tcp->u_arg[0]; |
| 515 | addr = tcp->u_arg[1]; |
| 516 | tcp->u_nargs = sysent[tcp->scno].nargs; |
Denys Vlasenko | 9fd4f96 | 2012-03-19 09:36:42 +0100 | [diff] [blame] | 517 | size = current_wordsize; |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 518 | for (i = 0; i < tcp->u_nargs; ++i) { |
| 519 | if (size == sizeof(int)) { |
| 520 | unsigned int arg; |
| 521 | if (umove(tcp, addr, &arg) < 0) |
| 522 | arg = 0; |
| 523 | tcp->u_arg[i] = arg; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 524 | } |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 525 | else { |
| 526 | unsigned long arg; |
| 527 | if (umove(tcp, addr, &arg) < 0) |
| 528 | arg = 0; |
| 529 | tcp->u_arg[i] = arg; |
| 530 | } |
| 531 | addr += size; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 532 | } |
| 533 | } |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 534 | #endif |
Mike Frysinger | 3362e89 | 2012-03-15 01:09:19 -0400 | [diff] [blame] | 535 | |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 536 | #ifdef SYS_ipc_subcall |
| 537 | static void |
| 538 | decode_ipc_subcall(struct tcb *tcp) |
| 539 | { |
| 540 | unsigned int i; |
| 541 | |
| 542 | if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= SYS_ipc_nsubcalls) |
| 543 | return; |
| 544 | |
| 545 | tcp->scno = SYS_ipc_subcall + tcp->u_arg[0]; |
| 546 | tcp->u_nargs = sysent[tcp->scno].nargs; |
| 547 | for (i = 0; i < tcp->u_nargs; i++) |
| 548 | tcp->u_arg[i] = tcp->u_arg[i + 1]; |
| 549 | } |
| 550 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 551 | |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 552 | int |
| 553 | printargs(struct tcb *tcp) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 554 | { |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 555 | if (entering(tcp)) { |
| 556 | int i; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 557 | |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 558 | for (i = 0; i < tcp->u_nargs; i++) |
| 559 | tprintf("%s%#lx", i ? ", " : "", tcp->u_arg[i]); |
| 560 | } |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 561 | return 0; |
| 562 | } |
| 563 | |
Denys Vlasenko | 72879c6 | 2012-02-27 14:18:02 +0100 | [diff] [blame] | 564 | int |
| 565 | printargs_lu(struct tcb *tcp) |
| 566 | { |
| 567 | if (entering(tcp)) { |
| 568 | int i; |
| 569 | |
| 570 | for (i = 0; i < tcp->u_nargs; i++) |
| 571 | tprintf("%s%lu", i ? ", " : "", tcp->u_arg[i]); |
| 572 | } |
| 573 | return 0; |
| 574 | } |
| 575 | |
| 576 | int |
| 577 | printargs_ld(struct tcb *tcp) |
| 578 | { |
| 579 | if (entering(tcp)) { |
| 580 | int i; |
| 581 | |
| 582 | for (i = 0; i < tcp->u_nargs; i++) |
| 583 | tprintf("%s%ld", i ? ", " : "", tcp->u_arg[i]); |
| 584 | } |
| 585 | return 0; |
| 586 | } |
| 587 | |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 588 | long |
| 589 | getrval2(struct tcb *tcp) |
| 590 | { |
| 591 | long val = -1; |
| 592 | |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 593 | #if defined(SPARC) || defined(SPARC64) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 594 | struct pt_regs regs; |
| 595 | if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) |
| 596 | return -1; |
| 597 | val = regs.u_regs[U_REG_O1]; |
| 598 | #elif defined(SH) |
| 599 | if (upeek(tcp, 4*(REG_REG0+1), &val) < 0) |
| 600 | return -1; |
| 601 | #elif defined(IA64) |
| 602 | if (upeek(tcp, PT_R9, &val) < 0) |
| 603 | return -1; |
| 604 | #endif |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 605 | |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 606 | return val; |
| 607 | } |
| 608 | |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 609 | int |
| 610 | is_restart_error(struct tcb *tcp) |
| 611 | { |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 612 | switch (tcp->u_error) { |
| 613 | case ERESTARTSYS: |
| 614 | case ERESTARTNOINTR: |
| 615 | case ERESTARTNOHAND: |
| 616 | case ERESTART_RESTARTBLOCK: |
| 617 | return 1; |
| 618 | default: |
| 619 | break; |
| 620 | } |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 621 | return 0; |
| 622 | } |
| 623 | |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 624 | #if defined(I386) |
Denys Vlasenko | b11322f | 2012-01-10 16:40:35 +0100 | [diff] [blame] | 625 | struct pt_regs i386_regs; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 626 | #elif defined(X86_64) |
Denys Vlasenko | e73a89d | 2012-01-18 11:07:24 +0100 | [diff] [blame] | 627 | /* |
| 628 | * On 32 bits, pt_regs and user_regs_struct are the same, |
| 629 | * but on 64 bits, user_regs_struct has six more fields: |
| 630 | * fs_base, gs_base, ds, es, fs, gs. |
| 631 | * PTRACE_GETREGS fills them too, so struct pt_regs would overflow. |
| 632 | */ |
| 633 | static struct user_regs_struct x86_64_regs; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 634 | #elif defined(IA64) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 635 | long r8, r10, psr; /* TODO: make static? */ |
| 636 | long ia32 = 0; /* not static */ |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 637 | #elif defined(POWERPC) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 638 | static long result; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 639 | #elif defined(M68K) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 640 | static long d0; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 641 | #elif defined(BFIN) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 642 | static long r0; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 643 | #elif defined(ARM) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 644 | static struct pt_regs regs; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 645 | #elif defined(ALPHA) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 646 | static long r0; |
| 647 | static long a3; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 648 | #elif defined(AVR32) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 649 | static struct pt_regs regs; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 650 | #elif defined(SPARC) || defined(SPARC64) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 651 | static struct pt_regs regs; |
| 652 | static unsigned long trap; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 653 | #elif defined(LINUX_MIPSN32) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 654 | static long long a3; |
| 655 | static long long r2; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 656 | #elif defined(MIPS) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 657 | static long a3; |
| 658 | static long r2; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 659 | #elif defined(S390) || defined(S390X) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 660 | static long gpr2; |
| 661 | static long pc; |
| 662 | static long syscall_mode; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 663 | #elif defined(HPPA) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 664 | static long r28; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 665 | #elif defined(SH) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 666 | static long r0; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 667 | #elif defined(SH64) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 668 | static long r9; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 669 | #elif defined(CRISV10) || defined(CRISV32) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 670 | static long r10; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 671 | #elif defined(MICROBLAZE) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 672 | static long r3; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 673 | #endif |
Wichert Akkerman | c792698 | 2000-04-10 22:22:31 +0000 | [diff] [blame] | 674 | |
Denys Vlasenko | b88f961 | 2011-08-21 18:03:23 +0200 | [diff] [blame] | 675 | /* Returns: |
| 676 | * 0: "ignore this ptrace stop", bail out of trace_syscall() silently. |
| 677 | * 1: ok, continue in trace_syscall(). |
| 678 | * other: error, trace_syscall() should print error indicator |
| 679 | * ("????" etc) and bail out. |
| 680 | */ |
Denys Vlasenko | 9fd4f96 | 2012-03-19 09:36:42 +0100 | [diff] [blame] | 681 | static int |
Denys Vlasenko | 06602d9 | 2011-08-24 17:53:52 +0200 | [diff] [blame] | 682 | get_scno(struct tcb *tcp) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 683 | { |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 684 | long scno = 0; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 685 | |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 686 | #if defined(S390) || defined(S390X) |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 687 | if (upeek(tcp, PT_GPR2, &syscall_mode) < 0) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 688 | return -1; |
Roland McGrath | 2f924ca | 2003-06-26 22:23:28 +0000 | [diff] [blame] | 689 | |
| 690 | if (syscall_mode != -ENOSYS) { |
| 691 | /* |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 692 | * Since kernel version 2.5.44 the scno gets passed in gpr2. |
Roland McGrath | 2f924ca | 2003-06-26 22:23:28 +0000 | [diff] [blame] | 693 | */ |
| 694 | scno = syscall_mode; |
| 695 | } else { |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 696 | /* |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 697 | * Old style of "passing" the scno via the SVC instruction. |
| 698 | */ |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 699 | long opcode, offset_reg, tmp; |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 700 | void *svc_addr; |
Denys Vlasenko | 7c9ba8b | 2011-08-19 19:46:32 +0200 | [diff] [blame] | 701 | static const int gpr_offset[16] = { |
| 702 | PT_GPR0, PT_GPR1, PT_ORIGGPR2, PT_GPR3, |
| 703 | PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7, |
| 704 | PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11, |
| 705 | PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15 |
| 706 | }; |
Roland McGrath | 761b5d7 | 2002-12-15 23:58:31 +0000 | [diff] [blame] | 707 | |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 708 | if (upeek(tcp, PT_PSWADDR, &pc) < 0) |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 709 | return -1; |
Roland McGrath | 96dc514 | 2003-01-20 10:23:04 +0000 | [diff] [blame] | 710 | errno = 0; |
Denys Vlasenko | fb03667 | 2009-01-23 16:30:26 +0000 | [diff] [blame] | 711 | opcode = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)(pc-sizeof(long)), 0); |
Roland McGrath | 96dc514 | 2003-01-20 10:23:04 +0000 | [diff] [blame] | 712 | if (errno) { |
| 713 | perror("peektext(pc-oneword)"); |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 714 | return -1; |
Roland McGrath | 96dc514 | 2003-01-20 10:23:04 +0000 | [diff] [blame] | 715 | } |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 716 | |
| 717 | /* |
| 718 | * We have to check if the SVC got executed directly or via an |
| 719 | * EXECUTE instruction. In case of EXECUTE it is necessary to do |
| 720 | * instruction decoding to derive the system call number. |
| 721 | * Unfortunately the opcode sizes of EXECUTE and SVC are differently, |
| 722 | * so that this doesn't work if a SVC opcode is part of an EXECUTE |
| 723 | * opcode. Since there is no way to find out the opcode size this |
| 724 | * is the best we can do... |
| 725 | */ |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 726 | if ((opcode & 0xff00) == 0x0a00) { |
| 727 | /* SVC opcode */ |
| 728 | scno = opcode & 0xff; |
Roland McGrath | 761b5d7 | 2002-12-15 23:58:31 +0000 | [diff] [blame] | 729 | } |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 730 | else { |
| 731 | /* SVC got executed by EXECUTE instruction */ |
| 732 | |
| 733 | /* |
| 734 | * Do instruction decoding of EXECUTE. If you really want to |
| 735 | * understand this, read the Principles of Operations. |
| 736 | */ |
| 737 | svc_addr = (void *) (opcode & 0xfff); |
| 738 | |
| 739 | tmp = 0; |
| 740 | offset_reg = (opcode & 0x000f0000) >> 16; |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 741 | if (offset_reg && (upeek(tcp, gpr_offset[offset_reg], &tmp) < 0)) |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 742 | return -1; |
| 743 | svc_addr += tmp; |
| 744 | |
| 745 | tmp = 0; |
| 746 | offset_reg = (opcode & 0x0000f000) >> 12; |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 747 | if (offset_reg && (upeek(tcp, gpr_offset[offset_reg], &tmp) < 0)) |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 748 | return -1; |
| 749 | svc_addr += tmp; |
| 750 | |
Denys Vlasenko | fb03667 | 2009-01-23 16:30:26 +0000 | [diff] [blame] | 751 | scno = ptrace(PTRACE_PEEKTEXT, tcp->pid, svc_addr, 0); |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 752 | if (errno) |
| 753 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 754 | # if defined(S390X) |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 755 | scno >>= 48; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 756 | # else |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 757 | scno >>= 16; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 758 | # endif |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 759 | tmp = 0; |
| 760 | offset_reg = (opcode & 0x00f00000) >> 20; |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 761 | if (offset_reg && (upeek(tcp, gpr_offset[offset_reg], &tmp) < 0)) |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 762 | return -1; |
| 763 | |
| 764 | scno = (scno | tmp) & 0xff; |
| 765 | } |
| 766 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 767 | #elif defined(POWERPC) |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 768 | if (upeek(tcp, sizeof(unsigned long)*PT_R0, &scno) < 0) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 769 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 770 | # ifdef POWERPC64 |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 771 | /* TODO: speed up strace by not doing this at every syscall. |
| 772 | * We only need to do it after execve. |
| 773 | */ |
| 774 | int currpers; |
| 775 | long val; |
Andreas Schwab | d69fa49 | 2010-07-12 21:39:57 +0200 | [diff] [blame] | 776 | |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 777 | /* Check for 64/32 bit mode. */ |
| 778 | if (upeek(tcp, sizeof(unsigned long)*PT_MSR, &val) < 0) |
| 779 | return -1; |
| 780 | /* SF is bit 0 of MSR */ |
| 781 | if (val < 0) |
| 782 | currpers = 0; |
| 783 | else |
| 784 | currpers = 1; |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 785 | update_personality(tcp, currpers); |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 786 | # endif |
| 787 | #elif defined(AVR32) |
Denys Vlasenko | 2ce12ed | 2011-08-24 17:25:32 +0200 | [diff] [blame] | 788 | /* Read complete register set in one go. */ |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 789 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, ®s) < 0) |
| 790 | return -1; |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 791 | scno = regs.r8; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 792 | #elif defined(BFIN) |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 793 | if (upeek(tcp, PT_ORIG_P0, &scno)) |
Dmitry V. Levin | 87ea1f4 | 2008-11-10 22:21:41 +0000 | [diff] [blame] | 794 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 795 | #elif defined(I386) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 796 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long) &i386_regs) < 0) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 797 | return -1; |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 798 | scno = i386_regs.orig_eax; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 799 | #elif defined(X86_64) |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 800 | int currpers; |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 801 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long) &x86_64_regs) < 0) |
| 802 | return -1; |
| 803 | scno = x86_64_regs.orig_rax; |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 804 | |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 805 | /* Check CS register value. On x86-64 linux it is: |
| 806 | * 0x33 for long mode (64 bit) |
| 807 | * 0x23 for compatibility mode (32 bit) |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 808 | */ |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 809 | switch (x86_64_regs.cs) { |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 810 | case 0x23: currpers = 1; break; |
| 811 | case 0x33: currpers = 0; break; |
| 812 | default: |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 813 | fprintf(stderr, "Unknown value CS=0x%08X while " |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 814 | "detecting personality of process " |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 815 | "PID=%d\n", (int)x86_64_regs.cs, tcp->pid); |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 816 | currpers = current_personality; |
| 817 | break; |
| 818 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 819 | # if 0 |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 820 | /* This version analyzes the opcode of a syscall instruction. |
| 821 | * (int 0x80 on i386 vs. syscall on x86-64) |
| 822 | * It works, but is too complicated. |
| 823 | */ |
| 824 | unsigned long val, rip, i; |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 825 | |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 826 | rip = x86_64_regs.rip; |
Roland McGrath | 761b5d7 | 2002-12-15 23:58:31 +0000 | [diff] [blame] | 827 | |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 828 | /* sizeof(syscall) == sizeof(int 0x80) == 2 */ |
| 829 | rip -= 2; |
| 830 | errno = 0; |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 831 | |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 832 | call = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)rip, (char *)0); |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 833 | if (errno) |
| 834 | fprintf(stderr, "ptrace_peektext failed: %s\n", |
| 835 | strerror(errno)); |
| 836 | switch (call & 0xffff) { |
| 837 | /* x86-64: syscall = 0x0f 0x05 */ |
| 838 | case 0x050f: currpers = 0; break; |
| 839 | /* i386: int 0x80 = 0xcd 0x80 */ |
| 840 | case 0x80cd: currpers = 1; break; |
| 841 | default: |
| 842 | currpers = current_personality; |
| 843 | fprintf(stderr, |
| 844 | "Unknown syscall opcode (0x%04X) while " |
| 845 | "detecting personality of process " |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 846 | "PID=%d\n", (int)call, tcp->pid); |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 847 | break; |
| 848 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 849 | # endif |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 850 | update_personality(tcp, currpers); |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 851 | #elif defined(IA64) |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 852 | # define IA64_PSR_IS ((long)1 << 34) |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 853 | if (upeek(tcp, PT_CR_IPSR, &psr) >= 0) |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 854 | ia32 = (psr & IA64_PSR_IS) != 0; |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 855 | if (ia32) { |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 856 | if (upeek(tcp, PT_R1, &scno) < 0) |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 857 | return -1; |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 858 | } else { |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 859 | if (upeek(tcp, PT_R15, &scno) < 0) |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 860 | return -1; |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 861 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 862 | #elif defined(ARM) |
Denys Vlasenko | 2ce12ed | 2011-08-24 17:25:32 +0200 | [diff] [blame] | 863 | /* Read complete register set in one go. */ |
Denys Vlasenko | fb03667 | 2009-01-23 16:30:26 +0000 | [diff] [blame] | 864 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (void *)®s) == -1) |
Roland McGrath | 0f87c49 | 2003-06-03 23:29:04 +0000 | [diff] [blame] | 865 | return -1; |
| 866 | |
| 867 | /* |
| 868 | * We only need to grab the syscall number on syscall entry. |
| 869 | */ |
| 870 | if (regs.ARM_ip == 0) { |
| 871 | /* |
| 872 | * Note: we only deal with only 32-bit CPUs here. |
| 873 | */ |
| 874 | if (regs.ARM_cpsr & 0x20) { |
| 875 | /* |
| 876 | * Get the Thumb-mode system call number |
| 877 | */ |
| 878 | scno = regs.ARM_r7; |
| 879 | } else { |
| 880 | /* |
| 881 | * Get the ARM-mode system call number |
| 882 | */ |
| 883 | errno = 0; |
Denys Vlasenko | fb03667 | 2009-01-23 16:30:26 +0000 | [diff] [blame] | 884 | scno = ptrace(PTRACE_PEEKTEXT, tcp->pid, (void *)(regs.ARM_pc - 4), NULL); |
Roland McGrath | 0f87c49 | 2003-06-03 23:29:04 +0000 | [diff] [blame] | 885 | if (errno) |
| 886 | return -1; |
| 887 | |
Roland McGrath | f691bd2 | 2006-04-25 07:34:41 +0000 | [diff] [blame] | 888 | /* Handle the EABI syscall convention. We do not |
| 889 | bother converting structures between the two |
| 890 | ABIs, but basic functionality should work even |
| 891 | if strace and the traced program have different |
| 892 | ABIs. */ |
| 893 | if (scno == 0xef000000) { |
| 894 | scno = regs.ARM_r7; |
| 895 | } else { |
| 896 | if ((scno & 0x0ff00000) != 0x0f900000) { |
| 897 | fprintf(stderr, "syscall: unknown syscall trap 0x%08lx\n", |
| 898 | scno); |
| 899 | return -1; |
| 900 | } |
Roland McGrath | 0f87c49 | 2003-06-03 23:29:04 +0000 | [diff] [blame] | 901 | |
Roland McGrath | f691bd2 | 2006-04-25 07:34:41 +0000 | [diff] [blame] | 902 | /* |
| 903 | * Fixup the syscall number |
| 904 | */ |
| 905 | scno &= 0x000fffff; |
| 906 | } |
Roland McGrath | 0f87c49 | 2003-06-03 23:29:04 +0000 | [diff] [blame] | 907 | } |
Roland McGrath | 5670331 | 2008-05-20 01:35:55 +0000 | [diff] [blame] | 908 | if (scno & 0x0f0000) { |
| 909 | /* |
| 910 | * Handle ARM specific syscall |
| 911 | */ |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 912 | update_personality(tcp, 1); |
Roland McGrath | 5670331 | 2008-05-20 01:35:55 +0000 | [diff] [blame] | 913 | scno &= 0x0000ffff; |
| 914 | } else |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 915 | update_personality(tcp, 0); |
Roland McGrath | 0f87c49 | 2003-06-03 23:29:04 +0000 | [diff] [blame] | 916 | |
Roland McGrath | 0f87c49 | 2003-06-03 23:29:04 +0000 | [diff] [blame] | 917 | } else { |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 918 | fprintf(stderr, "pid %d stray syscall entry\n", tcp->pid); |
| 919 | tcp->flags |= TCB_INSYSCALL; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 920 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 921 | #elif defined(M68K) |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 922 | if (upeek(tcp, 4*PT_ORIG_D0, &scno) < 0) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 923 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 924 | #elif defined(LINUX_MIPSN32) |
Roland McGrath | 542c2c6 | 2008-05-20 01:11:56 +0000 | [diff] [blame] | 925 | unsigned long long regs[38]; |
| 926 | |
Denys Vlasenko | b63256e | 2011-06-07 12:13:24 +0200 | [diff] [blame] | 927 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long) ®s) < 0) |
Roland McGrath | 542c2c6 | 2008-05-20 01:11:56 +0000 | [diff] [blame] | 928 | return -1; |
| 929 | a3 = regs[REG_A3]; |
| 930 | r2 = regs[REG_V0]; |
| 931 | |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 932 | scno = r2; |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 933 | if (!SCNO_IN_RANGE(scno)) { |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 934 | if (a3 == 0 || a3 == -1) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 935 | if (debug_flag) |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 936 | fprintf(stderr, "stray syscall exit: v0 = %ld\n", scno); |
Roland McGrath | 542c2c6 | 2008-05-20 01:11:56 +0000 | [diff] [blame] | 937 | return 0; |
| 938 | } |
Roland McGrath | 542c2c6 | 2008-05-20 01:11:56 +0000 | [diff] [blame] | 939 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 940 | #elif defined(MIPS) |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 941 | if (upeek(tcp, REG_A3, &a3) < 0) |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 942 | return -1; |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 943 | if (upeek(tcp, REG_V0, &scno) < 0) |
| 944 | return -1; |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 945 | |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 946 | if (!SCNO_IN_RANGE(scno)) { |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 947 | if (a3 == 0 || a3 == -1) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 948 | if (debug_flag) |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 949 | fprintf(stderr, "stray syscall exit: v0 = %ld\n", scno); |
Roland McGrath | 542c2c6 | 2008-05-20 01:11:56 +0000 | [diff] [blame] | 950 | return 0; |
| 951 | } |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 952 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 953 | #elif defined(ALPHA) |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 954 | if (upeek(tcp, REG_A3, &a3) < 0) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 955 | return -1; |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 956 | if (upeek(tcp, REG_R0, &scno) < 0) |
| 957 | return -1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 958 | |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 959 | /* |
| 960 | * Do some sanity checks to figure out if it's |
| 961 | * really a syscall entry |
| 962 | */ |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 963 | if (!SCNO_IN_RANGE(scno)) { |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 964 | if (a3 == 0 || a3 == -1) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 965 | if (debug_flag) |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 966 | fprintf(stderr, "stray syscall exit: r0 = %ld\n", scno); |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 967 | return 0; |
| 968 | } |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 969 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 970 | #elif defined(SPARC) || defined(SPARC64) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 971 | /* Everything we need is in the current register set. */ |
Denys Vlasenko | fb03667 | 2009-01-23 16:30:26 +0000 | [diff] [blame] | 972 | if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 973 | return -1; |
| 974 | |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 975 | /* Disassemble the syscall trap. */ |
| 976 | /* Retrieve the syscall trap instruction. */ |
| 977 | errno = 0; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 978 | # if defined(SPARC64) |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 979 | trap = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)regs.tpc, 0); |
| 980 | trap >>= 32; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 981 | # else |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 982 | trap = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)regs.pc, 0); |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 983 | # endif |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 984 | if (errno) |
Wichert Akkerman | c1652e2 | 2001-03-27 12:17:16 +0000 | [diff] [blame] | 985 | return -1; |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 986 | |
| 987 | /* Disassemble the trap to see what personality to use. */ |
| 988 | switch (trap) { |
| 989 | case 0x91d02010: |
| 990 | /* Linux/SPARC syscall trap. */ |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 991 | update_personality(tcp, 0); |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 992 | break; |
| 993 | case 0x91d0206d: |
| 994 | /* Linux/SPARC64 syscall trap. */ |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 995 | update_personality(tcp, 2); |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 996 | break; |
| 997 | case 0x91d02000: |
| 998 | /* SunOS syscall trap. (pers 1) */ |
| 999 | fprintf(stderr, "syscall: SunOS no support\n"); |
| 1000 | return -1; |
| 1001 | case 0x91d02008: |
| 1002 | /* Solaris 2.x syscall trap. (per 2) */ |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 1003 | update_personality(tcp, 1); |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 1004 | break; |
| 1005 | case 0x91d02009: |
| 1006 | /* NetBSD/FreeBSD syscall trap. */ |
| 1007 | fprintf(stderr, "syscall: NetBSD/FreeBSD not supported\n"); |
| 1008 | return -1; |
| 1009 | case 0x91d02027: |
| 1010 | /* Solaris 2.x gettimeofday */ |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 1011 | update_personality(tcp, 1); |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 1012 | break; |
| 1013 | default: |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1014 | # if defined(SPARC64) |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 1015 | fprintf(stderr, "syscall: unknown syscall trap %08lx %016lx\n", trap, regs.tpc); |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1016 | # else |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 1017 | fprintf(stderr, "syscall: unknown syscall trap %08lx %08lx\n", trap, regs.pc); |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1018 | # endif |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 1019 | return -1; |
| 1020 | } |
| 1021 | |
| 1022 | /* Extract the system call number from the registers. */ |
| 1023 | if (trap == 0x91d02027) |
| 1024 | scno = 156; |
| 1025 | else |
| 1026 | scno = regs.u_regs[U_REG_G1]; |
| 1027 | if (scno == 0) { |
| 1028 | scno = regs.u_regs[U_REG_O0]; |
| 1029 | memmove(®s.u_regs[U_REG_O0], ®s.u_regs[U_REG_O1], 7*sizeof(regs.u_regs[0])); |
| 1030 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1031 | #elif defined(HPPA) |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 1032 | if (upeek(tcp, PT_GR20, &scno) < 0) |
| 1033 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1034 | #elif defined(SH) |
Denys Vlasenko | adedb51 | 2008-12-30 18:47:55 +0000 | [diff] [blame] | 1035 | /* |
| 1036 | * In the new syscall ABI, the system call number is in R3. |
| 1037 | */ |
| 1038 | if (upeek(tcp, 4*(REG_REG0+3), &scno) < 0) |
| 1039 | return -1; |
Wichert Akkerman | ccef637 | 2002-05-01 16:39:22 +0000 | [diff] [blame] | 1040 | |
Denys Vlasenko | adedb51 | 2008-12-30 18:47:55 +0000 | [diff] [blame] | 1041 | if (scno < 0) { |
| 1042 | /* Odd as it may seem, a glibc bug has been known to cause |
| 1043 | glibc to issue bogus negative syscall numbers. So for |
| 1044 | our purposes, make strace print what it *should* have been */ |
| 1045 | long correct_scno = (scno & 0xff); |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1046 | if (debug_flag) |
Denys Vlasenko | 5ae2b7c | 2009-02-27 20:32:52 +0000 | [diff] [blame] | 1047 | fprintf(stderr, |
Denys Vlasenko | adedb51 | 2008-12-30 18:47:55 +0000 | [diff] [blame] | 1048 | "Detected glibc bug: bogus system call" |
| 1049 | " number = %ld, correcting to %ld\n", |
| 1050 | scno, |
| 1051 | correct_scno); |
| 1052 | scno = correct_scno; |
| 1053 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1054 | #elif defined(SH64) |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 1055 | if (upeek(tcp, REG_SYSCALL, &scno) < 0) |
Roland McGrath | e1e584b | 2003-06-02 19:18:58 +0000 | [diff] [blame] | 1056 | return -1; |
Denys Vlasenko | adedb51 | 2008-12-30 18:47:55 +0000 | [diff] [blame] | 1057 | scno &= 0xFFFF; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1058 | #elif defined(CRISV10) || defined(CRISV32) |
Denys Vlasenko | ea0e6e8 | 2009-02-25 17:08:40 +0000 | [diff] [blame] | 1059 | if (upeek(tcp, 4*PT_R9, &scno) < 0) |
| 1060 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1061 | #elif defined(TILE) |
Chris Metcalf | c8c6698 | 2009-12-28 10:00:15 -0500 | [diff] [blame] | 1062 | if (upeek(tcp, PTREGS_OFFSET_REG(10), &scno) < 0) |
| 1063 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1064 | #elif defined(MICROBLAZE) |
Edgar E. Iglesias | 939caba | 2010-07-06 14:21:07 +0200 | [diff] [blame] | 1065 | if (upeek(tcp, 0, &scno) < 0) |
| 1066 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1067 | #endif |
Denys Vlasenko | ea0e6e8 | 2009-02-25 17:08:40 +0000 | [diff] [blame] | 1068 | |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1069 | #if defined(SH) |
Denys Vlasenko | adedb51 | 2008-12-30 18:47:55 +0000 | [diff] [blame] | 1070 | /* new syscall ABI returns result in R0 */ |
| 1071 | if (upeek(tcp, 4*REG_REG0, (long *)&r0) < 0) |
| 1072 | return -1; |
Roland McGrath | f5a4777 | 2003-06-26 22:40:42 +0000 | [diff] [blame] | 1073 | #elif defined(SH64) |
Denys Vlasenko | adedb51 | 2008-12-30 18:47:55 +0000 | [diff] [blame] | 1074 | /* ABI defines result returned in r9 */ |
| 1075 | if (upeek(tcp, REG_GENERAL(9), (long *)&r9) < 0) |
| 1076 | return -1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1077 | #endif |
Denys Vlasenko | ea0e6e8 | 2009-02-25 17:08:40 +0000 | [diff] [blame] | 1078 | |
Denys Vlasenko | 8cd1acd | 2011-08-24 16:52:57 +0200 | [diff] [blame] | 1079 | tcp->scno = scno; |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1080 | return 1; |
| 1081 | } |
| 1082 | |
Denys Vlasenko | 20c41fd | 2011-08-25 10:23:00 +0200 | [diff] [blame] | 1083 | /* Called at each syscall entry. |
Denys Vlasenko | bc161ec | 2009-01-02 18:02:45 +0000 | [diff] [blame] | 1084 | * Returns: |
Denys Vlasenko | b88f961 | 2011-08-21 18:03:23 +0200 | [diff] [blame] | 1085 | * 0: "ignore this ptrace stop", bail out of trace_syscall() silently. |
Roland McGrath | eb9e2e8 | 2009-06-02 16:49:22 -0700 | [diff] [blame] | 1086 | * 1: ok, continue in trace_syscall(). |
| 1087 | * other: error, trace_syscall() should print error indicator |
Denys Vlasenko | bc161ec | 2009-01-02 18:02:45 +0000 | [diff] [blame] | 1088 | * ("????" etc) and bail out. |
| 1089 | */ |
Roland McGrath | a4d4853 | 2005-06-08 20:45:28 +0000 | [diff] [blame] | 1090 | static int |
Denys Vlasenko | 8b4454c | 2011-08-25 10:40:14 +0200 | [diff] [blame] | 1091 | syscall_fixup_on_sysenter(struct tcb *tcp) |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1092 | { |
Denys Vlasenko | b88f961 | 2011-08-21 18:03:23 +0200 | [diff] [blame] | 1093 | /* A common case of "not a syscall entry" is post-execve SIGTRAP */ |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1094 | #if defined(I386) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1095 | if (i386_regs.eax != -ENOSYS) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1096 | if (debug_flag) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1097 | fprintf(stderr, "not a syscall entry (eax = %ld)\n", i386_regs.eax); |
| 1098 | return 0; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1099 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1100 | #elif defined(X86_64) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1101 | { |
| 1102 | long rax = x86_64_regs.rax; |
Denys Vlasenko | 18beb98 | 2011-08-24 16:59:23 +0200 | [diff] [blame] | 1103 | if (current_personality == 1) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1104 | rax = (int)rax; /* sign extend from 32 bits */ |
| 1105 | if (rax != -ENOSYS) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1106 | if (debug_flag) |
Denys Vlasenko | 18beb98 | 2011-08-24 16:59:23 +0200 | [diff] [blame] | 1107 | fprintf(stderr, "not a syscall entry (rax = %ld)\n", rax); |
| 1108 | return 0; |
| 1109 | } |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 1110 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1111 | #elif defined(S390) || defined(S390X) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 1112 | /* TODO: we already fetched PT_GPR2 in get_scno |
| 1113 | * and stored it in syscall_mode, reuse it here |
| 1114 | * instead of re-fetching? |
| 1115 | */ |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 1116 | if (upeek(tcp, PT_GPR2, &gpr2) < 0) |
Wichert Akkerman | 12f75d1 | 2000-02-14 16:23:40 +0000 | [diff] [blame] | 1117 | return -1; |
Michal Ludvig | 882eda8 | 2002-11-11 12:50:47 +0000 | [diff] [blame] | 1118 | if (syscall_mode != -ENOSYS) |
| 1119 | syscall_mode = tcp->scno; |
Denys Vlasenko | ece9879 | 2011-08-25 10:25:35 +0200 | [diff] [blame] | 1120 | if (gpr2 != syscall_mode) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1121 | if (debug_flag) |
Denys Vlasenko | b88f961 | 2011-08-21 18:03:23 +0200 | [diff] [blame] | 1122 | fprintf(stderr, "not a syscall entry (gpr2 = %ld)\n", gpr2); |
Wichert Akkerman | 12f75d1 | 2000-02-14 16:23:40 +0000 | [diff] [blame] | 1123 | return 0; |
| 1124 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1125 | #elif defined(M68K) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 1126 | /* TODO? Eliminate upeek's in arches below like we did in x86 */ |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 1127 | if (upeek(tcp, 4*PT_D0, &d0) < 0) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1128 | return -1; |
Denys Vlasenko | ece9879 | 2011-08-25 10:25:35 +0200 | [diff] [blame] | 1129 | if (d0 != -ENOSYS) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1130 | if (debug_flag) |
Denys Vlasenko | b88f961 | 2011-08-21 18:03:23 +0200 | [diff] [blame] | 1131 | fprintf(stderr, "not a syscall entry (d0 = %ld)\n", d0); |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1132 | return 0; |
| 1133 | } |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 1134 | #elif defined(IA64) |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 1135 | if (upeek(tcp, PT_R10, &r10) < 0) |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 1136 | return -1; |
Denys Vlasenko | 932fc7d | 2008-12-16 18:18:40 +0000 | [diff] [blame] | 1137 | if (upeek(tcp, PT_R8, &r8) < 0) |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 1138 | return -1; |
Denys Vlasenko | ece9879 | 2011-08-25 10:25:35 +0200 | [diff] [blame] | 1139 | if (ia32 && r8 != -ENOSYS) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1140 | if (debug_flag) |
Denys Vlasenko | b88f961 | 2011-08-21 18:03:23 +0200 | [diff] [blame] | 1141 | fprintf(stderr, "not a syscall entry (r8 = %ld)\n", r8); |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 1142 | return 0; |
| 1143 | } |
Denys Vlasenko | ea0e6e8 | 2009-02-25 17:08:40 +0000 | [diff] [blame] | 1144 | #elif defined(CRISV10) || defined(CRISV32) |
Edgar E. Iglesias | eeb9ce3 | 2009-10-05 14:41:02 +0000 | [diff] [blame] | 1145 | if (upeek(tcp, 4*PT_R10, &r10) < 0) |
Denys Vlasenko | ea0e6e8 | 2009-02-25 17:08:40 +0000 | [diff] [blame] | 1146 | return -1; |
Denys Vlasenko | ece9879 | 2011-08-25 10:25:35 +0200 | [diff] [blame] | 1147 | if (r10 != -ENOSYS) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1148 | if (debug_flag) |
Denys Vlasenko | b88f961 | 2011-08-21 18:03:23 +0200 | [diff] [blame] | 1149 | fprintf(stderr, "not a syscall entry (r10 = %ld)\n", r10); |
Denys Vlasenko | ea0e6e8 | 2009-02-25 17:08:40 +0000 | [diff] [blame] | 1150 | return 0; |
| 1151 | } |
Edgar E. Iglesias | 939caba | 2010-07-06 14:21:07 +0200 | [diff] [blame] | 1152 | #elif defined(MICROBLAZE) |
| 1153 | if (upeek(tcp, 3 * 4, &r3) < 0) |
| 1154 | return -1; |
Denys Vlasenko | ece9879 | 2011-08-25 10:25:35 +0200 | [diff] [blame] | 1155 | if (r3 != -ENOSYS) { |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1156 | if (debug_flag) |
Denys Vlasenko | b88f961 | 2011-08-21 18:03:23 +0200 | [diff] [blame] | 1157 | fprintf(stderr, "not a syscall entry (r3 = %ld)\n", r3); |
Edgar E. Iglesias | 939caba | 2010-07-06 14:21:07 +0200 | [diff] [blame] | 1158 | return 0; |
| 1159 | } |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1160 | #endif |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1161 | return 1; |
| 1162 | } |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1163 | |
Denys Vlasenko | 146b944 | 2012-03-18 22:10:48 +0100 | [diff] [blame] | 1164 | static void |
| 1165 | internal_fork(struct tcb *tcp) |
| 1166 | { |
| 1167 | #if defined S390 || defined S390X || defined CRISV10 || defined CRISV32 |
| 1168 | # define ARG_FLAGS 1 |
| 1169 | #else |
| 1170 | # define ARG_FLAGS 0 |
| 1171 | #endif |
| 1172 | #ifndef CLONE_UNTRACED |
| 1173 | # define CLONE_UNTRACED 0x00800000 |
| 1174 | #endif |
| 1175 | if ((ptrace_setoptions |
| 1176 | & (PTRACE_O_TRACECLONE | PTRACE_O_TRACEFORK | PTRACE_O_TRACEVFORK)) |
| 1177 | == (PTRACE_O_TRACECLONE | PTRACE_O_TRACEFORK | PTRACE_O_TRACEVFORK)) |
| 1178 | return; |
| 1179 | |
| 1180 | if (!followfork) |
| 1181 | return; |
| 1182 | |
| 1183 | if (entering(tcp)) { |
| 1184 | /* |
| 1185 | * We won't see the new child if clone is called with |
| 1186 | * CLONE_UNTRACED, so we keep the same logic with that option |
| 1187 | * and don't trace it. |
| 1188 | */ |
| 1189 | if ((sysent[tcp->scno].sys_func == sys_clone) && |
| 1190 | (tcp->u_arg[ARG_FLAGS] & CLONE_UNTRACED)) |
| 1191 | return; |
| 1192 | setbpt(tcp); |
| 1193 | } else { |
| 1194 | if (tcp->flags & TCB_BPTSET) |
| 1195 | clearbpt(tcp); |
| 1196 | } |
| 1197 | } |
| 1198 | |
| 1199 | #if defined(TCB_WAITEXECVE) |
| 1200 | static void |
| 1201 | internal_exec(struct tcb *tcp) |
| 1202 | { |
| 1203 | /* Maybe we have post-execve SIGTRAP suppressed? */ |
| 1204 | if (ptrace_setoptions & PTRACE_O_TRACEEXEC) |
| 1205 | return; /* yes, no need to do anything */ |
| 1206 | |
| 1207 | if (exiting(tcp) && syserror(tcp)) |
| 1208 | /* Error in execve, no post-execve SIGTRAP expected */ |
| 1209 | tcp->flags &= ~TCB_WAITEXECVE; |
| 1210 | else |
| 1211 | tcp->flags |= TCB_WAITEXECVE; |
| 1212 | } |
| 1213 | #endif |
| 1214 | |
| 1215 | static void |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1216 | internal_syscall(struct tcb *tcp) |
Roland McGrath | c1e4592 | 2008-05-27 23:18:29 +0000 | [diff] [blame] | 1217 | { |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1218 | /* |
| 1219 | * We must always trace a few critical system calls in order to |
| 1220 | * correctly support following forks in the presence of tracing |
| 1221 | * qualifiers. |
| 1222 | */ |
| 1223 | int (*func)(); |
| 1224 | |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1225 | if (!SCNO_IN_RANGE(tcp->scno)) |
Denys Vlasenko | 146b944 | 2012-03-18 22:10:48 +0100 | [diff] [blame] | 1226 | return; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1227 | |
| 1228 | func = sysent[tcp->scno].sys_func; |
| 1229 | |
| 1230 | if ( sys_fork == func |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1231 | || sys_vfork == func |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1232 | || sys_clone == func |
Denys Vlasenko | 146b944 | 2012-03-18 22:10:48 +0100 | [diff] [blame] | 1233 | ) { |
| 1234 | internal_fork(tcp); |
| 1235 | return; |
| 1236 | } |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1237 | |
Denys Vlasenko | 8470374 | 2012-02-25 02:38:52 +0100 | [diff] [blame] | 1238 | #if defined(TCB_WAITEXECVE) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1239 | if ( sys_execve == func |
Denys Vlasenko | 8470374 | 2012-02-25 02:38:52 +0100 | [diff] [blame] | 1240 | # if defined(SPARC) || defined(SPARC64) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1241 | || sys_execv == func |
Denys Vlasenko | a794974 | 2011-08-21 17:26:55 +0200 | [diff] [blame] | 1242 | # endif |
Denys Vlasenko | 146b944 | 2012-03-18 22:10:48 +0100 | [diff] [blame] | 1243 | ) { |
| 1244 | internal_exec(tcp); |
| 1245 | return; |
| 1246 | } |
Roland McGrath | c1e4592 | 2008-05-27 23:18:29 +0000 | [diff] [blame] | 1247 | #endif |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1248 | } |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1249 | |
Denys Vlasenko | bb6bb5c | 2012-03-20 17:10:35 +0100 | [diff] [blame^] | 1250 | /* Return -1 on error or 1 on success (never 0!) */ |
Roland McGrath | a4d4853 | 2005-06-08 20:45:28 +0000 | [diff] [blame] | 1251 | static int |
Denys Vlasenko | bb6bb5c | 2012-03-20 17:10:35 +0100 | [diff] [blame^] | 1252 | get_syscall_args(struct tcb *tcp) |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1253 | { |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1254 | int i, nargs; |
| 1255 | |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1256 | if (SCNO_IN_RANGE(tcp->scno)) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1257 | nargs = tcp->u_nargs = sysent[tcp->scno].nargs; |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1258 | else |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1259 | nargs = tcp->u_nargs = MAX_ARGS; |
| 1260 | |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1261 | #if defined(S390) || defined(S390X) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1262 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1263 | if (upeek(tcp, i==0 ? PT_ORIGGPR2 : PT_GPR2 + i*sizeof(long), &tcp->u_arg[i]) < 0) |
| 1264 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1265 | #elif defined(ALPHA) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1266 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1267 | if (upeek(tcp, REG_A0+i, &tcp->u_arg[i]) < 0) |
| 1268 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1269 | #elif defined(IA64) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1270 | if (!ia32) { |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1271 | unsigned long *out0, cfm, sof, sol; |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1272 | long rbs_end; |
| 1273 | /* be backwards compatible with kernel < 2.4.4... */ |
| 1274 | # ifndef PT_RBS_END |
| 1275 | # define PT_RBS_END PT_AR_BSP |
| 1276 | # endif |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 1277 | |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1278 | if (upeek(tcp, PT_RBS_END, &rbs_end) < 0) |
| 1279 | return -1; |
| 1280 | if (upeek(tcp, PT_CFM, (long *) &cfm) < 0) |
Roland McGrath | 542c2c6 | 2008-05-20 01:11:56 +0000 | [diff] [blame] | 1281 | return -1; |
| 1282 | |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1283 | sof = (cfm >> 0) & 0x7f; |
| 1284 | sol = (cfm >> 7) & 0x7f; |
| 1285 | out0 = ia64_rse_skip_regs((unsigned long *) rbs_end, -sof + sol); |
| 1286 | |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1287 | for (i = 0; i < nargs; ++i) { |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1288 | if (umoven(tcp, (unsigned long) ia64_rse_skip_regs(out0, i), |
| 1289 | sizeof(long), (char *) &tcp->u_arg[i]) < 0) |
| 1290 | return -1; |
| 1291 | } |
| 1292 | } else { |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1293 | static const int argreg[MAX_ARGS] = { PT_R11 /* EBX = out0 */, |
| 1294 | PT_R9 /* ECX = out1 */, |
| 1295 | PT_R10 /* EDX = out2 */, |
| 1296 | PT_R14 /* ESI = out3 */, |
| 1297 | PT_R15 /* EDI = out4 */, |
| 1298 | PT_R13 /* EBP = out5 */}; |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1299 | |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1300 | for (i = 0; i < nargs; ++i) { |
| 1301 | if (upeek(tcp, argreg[i], &tcp->u_arg[i]) < 0) |
| 1302 | return -1; |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1303 | /* truncate away IVE sign-extension */ |
| 1304 | tcp->u_arg[i] &= 0xffffffff; |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1305 | } |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1306 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1307 | #elif defined(LINUX_MIPSN32) || defined(LINUX_MIPSN64) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1308 | /* N32 and N64 both use up to six registers. */ |
| 1309 | unsigned long long regs[38]; |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1310 | |
| 1311 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long) ®s) < 0) |
| 1312 | return -1; |
| 1313 | |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1314 | for (i = 0; i < nargs; ++i) { |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1315 | tcp->u_arg[i] = regs[REG_A0 + i]; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1316 | # if defined(LINUX_MIPSN32) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1317 | tcp->ext_arg[i] = regs[REG_A0 + i]; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1318 | # endif |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1319 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1320 | #elif defined(MIPS) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1321 | if (nargs > 4) { |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1322 | long sp; |
| 1323 | |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1324 | if (upeek(tcp, REG_SP, &sp) < 0) |
| 1325 | return -1; |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1326 | for (i = 0; i < 4; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1327 | if (upeek(tcp, REG_A0 + i, &tcp->u_arg[i]) < 0) |
| 1328 | return -1; |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1329 | umoven(tcp, sp + 16, (nargs - 4) * sizeof(tcp->u_arg[0]), |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1330 | (char *)(tcp->u_arg + 4)); |
| 1331 | } else { |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1332 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1333 | if (upeek(tcp, REG_A0 + i, &tcp->u_arg[i]) < 0) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1334 | return -1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1335 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1336 | #elif defined(POWERPC) |
| 1337 | # ifndef PT_ORIG_R3 |
| 1338 | # define PT_ORIG_R3 34 |
| 1339 | # endif |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1340 | for (i = 0; i < nargs; ++i) { |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1341 | if (upeek(tcp, (i==0) ? |
| 1342 | (sizeof(unsigned long) * PT_ORIG_R3) : |
| 1343 | ((i+PT_R3) * sizeof(unsigned long)), |
| 1344 | &tcp->u_arg[i]) < 0) |
| 1345 | return -1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1346 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1347 | #elif defined(SPARC) || defined(SPARC64) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1348 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1349 | tcp->u_arg[i] = regs.u_regs[U_REG_O0 + i]; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1350 | #elif defined(HPPA) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1351 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1352 | if (upeek(tcp, PT_GR26-4*i, &tcp->u_arg[i]) < 0) |
| 1353 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1354 | #elif defined(ARM) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1355 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1356 | tcp->u_arg[i] = regs.uregs[i]; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1357 | #elif defined(AVR32) |
Denys Vlasenko | b5b2589 | 2011-08-30 19:04:54 +0200 | [diff] [blame] | 1358 | (void)i; |
| 1359 | (void)nargs; |
| 1360 | tcp->u_arg[0] = regs.r12; |
| 1361 | tcp->u_arg[1] = regs.r11; |
| 1362 | tcp->u_arg[2] = regs.r10; |
| 1363 | tcp->u_arg[3] = regs.r9; |
| 1364 | tcp->u_arg[4] = regs.r5; |
| 1365 | tcp->u_arg[5] = regs.r3; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1366 | #elif defined(BFIN) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1367 | static const int argreg[MAX_ARGS] = { PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5 }; |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1368 | |
Denys Vlasenko | 4b887a5 | 2011-08-23 13:32:38 +0200 | [diff] [blame] | 1369 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1370 | if (upeek(tcp, argreg[i], &tcp->u_arg[i]) < 0) |
| 1371 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1372 | #elif defined(SH) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1373 | static const int syscall_regs[MAX_ARGS] = { |
| 1374 | 4 * (REG_REG0+4), 4 * (REG_REG0+5), 4 * (REG_REG0+6), |
| 1375 | 4 * (REG_REG0+7), 4 * (REG_REG0 ), 4 * (REG_REG0+1) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1376 | }; |
| 1377 | |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1378 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | 0b6c73c | 2011-06-23 22:22:34 +0200 | [diff] [blame] | 1379 | if (upeek(tcp, syscall_regs[i], &tcp->u_arg[i]) < 0) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1380 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1381 | #elif defined(SH64) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1382 | int i; |
| 1383 | /* Registers used by SH5 Linux system calls for parameters */ |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1384 | static const int syscall_regs[MAX_ARGS] = { 2, 3, 4, 5, 6, 7 }; |
Roland McGrath | e1e584b | 2003-06-02 19:18:58 +0000 | [diff] [blame] | 1385 | |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1386 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1387 | if (upeek(tcp, REG_GENERAL(syscall_regs[i]), &tcp->u_arg[i]) < 0) |
| 1388 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1389 | #elif defined(X86_64) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1390 | (void)i; |
| 1391 | (void)nargs; |
| 1392 | if (current_personality == 0) { /* x86-64 ABI */ |
| 1393 | tcp->u_arg[0] = x86_64_regs.rdi; |
| 1394 | tcp->u_arg[1] = x86_64_regs.rsi; |
| 1395 | tcp->u_arg[2] = x86_64_regs.rdx; |
| 1396 | tcp->u_arg[3] = x86_64_regs.r10; |
| 1397 | tcp->u_arg[4] = x86_64_regs.r8; |
| 1398 | tcp->u_arg[5] = x86_64_regs.r9; |
| 1399 | } else { /* i386 ABI */ |
| 1400 | /* Sign-extend lower 32 bits */ |
| 1401 | tcp->u_arg[0] = (long)(int)x86_64_regs.rbx; |
| 1402 | tcp->u_arg[1] = (long)(int)x86_64_regs.rcx; |
| 1403 | tcp->u_arg[2] = (long)(int)x86_64_regs.rdx; |
| 1404 | tcp->u_arg[3] = (long)(int)x86_64_regs.rsi; |
| 1405 | tcp->u_arg[4] = (long)(int)x86_64_regs.rdi; |
| 1406 | tcp->u_arg[5] = (long)(int)x86_64_regs.rbp; |
| 1407 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1408 | #elif defined(MICROBLAZE) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1409 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1410 | if (upeek(tcp, (5 + i) * 4, &tcp->u_arg[i]) < 0) |
| 1411 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1412 | #elif defined(CRISV10) || defined(CRISV32) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1413 | static const int crisregs[MAX_ARGS] = { |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1414 | 4*PT_ORIG_R10, 4*PT_R11, 4*PT_R12, |
Denys Vlasenko | 0b6c73c | 2011-06-23 22:22:34 +0200 | [diff] [blame] | 1415 | 4*PT_R13 , 4*PT_MOF, 4*PT_SRP |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1416 | }; |
Roland McGrath | e1e584b | 2003-06-02 19:18:58 +0000 | [diff] [blame] | 1417 | |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1418 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1419 | if (upeek(tcp, crisregs[i], &tcp->u_arg[i]) < 0) |
| 1420 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1421 | #elif defined(TILE) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1422 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1423 | if (upeek(tcp, PTREGS_OFFSET_REG(i), &tcp->u_arg[i]) < 0) |
| 1424 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1425 | #elif defined(M68K) |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1426 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1427 | if (upeek(tcp, (i < 5 ? i : i + 2)*4, &tcp->u_arg[i]) < 0) |
| 1428 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1429 | #elif defined(I386) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1430 | (void)i; |
| 1431 | (void)nargs; |
| 1432 | tcp->u_arg[0] = i386_regs.ebx; |
| 1433 | tcp->u_arg[1] = i386_regs.ecx; |
| 1434 | tcp->u_arg[2] = i386_regs.edx; |
| 1435 | tcp->u_arg[3] = i386_regs.esi; |
| 1436 | tcp->u_arg[4] = i386_regs.edi; |
| 1437 | tcp->u_arg[5] = i386_regs.ebp; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1438 | #else /* Other architecture (32bits specific) */ |
Dmitry V. Levin | 5f731c4 | 2011-08-23 16:24:20 +0000 | [diff] [blame] | 1439 | for (i = 0; i < nargs; ++i) |
Denys Vlasenko | f5d099c | 2011-06-23 22:10:54 +0200 | [diff] [blame] | 1440 | if (upeek(tcp, i*4, &tcp->u_arg[i]) < 0) |
| 1441 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1442 | #endif |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1443 | return 1; |
| 1444 | } |
| 1445 | |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1446 | static int |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1447 | trace_syscall_entering(struct tcb *tcp) |
| 1448 | { |
| 1449 | int res, scno_good; |
| 1450 | |
Denys Vlasenko | 2ce12ed | 2011-08-24 17:25:32 +0200 | [diff] [blame] | 1451 | #if defined TCB_WAITEXECVE |
| 1452 | if (tcp->flags & TCB_WAITEXECVE) { |
| 1453 | /* This is the post-execve SIGTRAP. */ |
| 1454 | tcp->flags &= ~TCB_WAITEXECVE; |
| 1455 | return 0; |
| 1456 | } |
| 1457 | #endif |
| 1458 | |
Denys Vlasenko | 06602d9 | 2011-08-24 17:53:52 +0200 | [diff] [blame] | 1459 | scno_good = res = get_scno(tcp); |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1460 | if (res == 0) |
| 1461 | return res; |
| 1462 | if (res == 1) |
Denys Vlasenko | 8b4454c | 2011-08-25 10:40:14 +0200 | [diff] [blame] | 1463 | res = syscall_fixup_on_sysenter(tcp); |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1464 | if (res == 0) |
| 1465 | return res; |
| 1466 | if (res == 1) |
Denys Vlasenko | bb6bb5c | 2012-03-20 17:10:35 +0100 | [diff] [blame^] | 1467 | res = get_syscall_args(tcp); |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1468 | |
| 1469 | if (res != 1) { |
| 1470 | printleader(tcp); |
| 1471 | tcp->flags &= ~TCB_REPRINT; |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1472 | if (scno_good != 1) |
Denys Vlasenko | b7a6dae | 2012-03-20 16:48:35 +0100 | [diff] [blame] | 1473 | tprints("????" /* anti-trigraph gap */ "("); |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1474 | else if (!SCNO_IN_RANGE(tcp->scno)) |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1475 | tprintf("syscall_%lu(", tcp->scno); |
| 1476 | else |
| 1477 | tprintf("%s(", sysent[tcp->scno].sys_name); |
| 1478 | /* |
| 1479 | * " <unavailable>" will be added later by the code which |
| 1480 | * detects ptrace errors. |
| 1481 | */ |
| 1482 | goto ret; |
| 1483 | } |
| 1484 | |
Dmitry V. Levin | b5e88d4 | 2012-02-20 17:02:38 +0000 | [diff] [blame] | 1485 | #if defined(SYS_socket_subcall) || defined(SYS_ipc_subcall) |
| 1486 | while (SCNO_IN_RANGE(tcp->scno)) { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1487 | # ifdef SYS_socket_subcall |
Dmitry V. Levin | b5e88d4 | 2012-02-20 17:02:38 +0000 | [diff] [blame] | 1488 | if (sysent[tcp->scno].sys_func == sys_socketcall) { |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 1489 | decode_socket_subcall(tcp); |
Dmitry V. Levin | b5e88d4 | 2012-02-20 17:02:38 +0000 | [diff] [blame] | 1490 | break; |
| 1491 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1492 | # endif |
| 1493 | # ifdef SYS_ipc_subcall |
Dmitry V. Levin | b5e88d4 | 2012-02-20 17:02:38 +0000 | [diff] [blame] | 1494 | if (sysent[tcp->scno].sys_func == sys_ipc) { |
Dmitry V. Levin | 648c22c | 2012-03-15 22:08:55 +0000 | [diff] [blame] | 1495 | decode_ipc_subcall(tcp); |
Dmitry V. Levin | b5e88d4 | 2012-02-20 17:02:38 +0000 | [diff] [blame] | 1496 | break; |
| 1497 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1498 | # endif |
Dmitry V. Levin | b5e88d4 | 2012-02-20 17:02:38 +0000 | [diff] [blame] | 1499 | break; |
| 1500 | } |
| 1501 | #endif /* SYS_socket_subcall || SYS_ipc_subcall */ |
| 1502 | |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1503 | internal_syscall(tcp); |
| 1504 | |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1505 | if ((SCNO_IN_RANGE(tcp->scno) && |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1506 | !(qual_flags[tcp->scno] & QUAL_TRACE)) || |
| 1507 | (tracing_paths && !pathtrace_match(tcp))) { |
| 1508 | tcp->flags |= TCB_INSYSCALL | TCB_FILTERED; |
| 1509 | return 0; |
| 1510 | } |
| 1511 | |
| 1512 | tcp->flags &= ~TCB_FILTERED; |
| 1513 | |
| 1514 | if (cflag == CFLAG_ONLY_STATS) { |
| 1515 | res = 0; |
| 1516 | goto ret; |
| 1517 | } |
| 1518 | |
| 1519 | printleader(tcp); |
| 1520 | tcp->flags &= ~TCB_REPRINT; |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1521 | if (!SCNO_IN_RANGE(tcp->scno)) |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1522 | tprintf("syscall_%lu(", tcp->scno); |
| 1523 | else |
| 1524 | tprintf("%s(", sysent[tcp->scno].sys_name); |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1525 | if (!SCNO_IN_RANGE(tcp->scno) || |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1526 | ((qual_flags[tcp->scno] & QUAL_RAW) && |
| 1527 | sysent[tcp->scno].sys_func != sys_exit)) |
| 1528 | res = printargs(tcp); |
| 1529 | else |
| 1530 | res = (*sysent[tcp->scno].sys_func)(tcp); |
| 1531 | |
| 1532 | if (fflush(tcp->outf) == EOF) |
| 1533 | return -1; |
| 1534 | ret: |
| 1535 | tcp->flags |= TCB_INSYSCALL; |
| 1536 | /* Measure the entrance time as late as possible to avoid errors. */ |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1537 | if (Tflag || cflag) |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1538 | gettimeofday(&tcp->etime, NULL); |
| 1539 | return res; |
| 1540 | } |
| 1541 | |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1542 | /* Returns: |
| 1543 | * 0: "ignore this ptrace stop", bail out of trace_syscall() silently. |
| 1544 | * 1: ok, continue in trace_syscall(). |
| 1545 | * other: error, trace_syscall() should print error indicator |
| 1546 | * ("????" etc) and bail out. |
| 1547 | */ |
| 1548 | static int |
| 1549 | get_syscall_result(struct tcb *tcp) |
| 1550 | { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1551 | #if defined(S390) || defined(S390X) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 1552 | if (upeek(tcp, PT_GPR2, &gpr2) < 0) |
| 1553 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1554 | #elif defined(POWERPC) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 1555 | # define SO_MASK 0x10000000 |
| 1556 | { |
| 1557 | long flags; |
| 1558 | if (upeek(tcp, sizeof(unsigned long)*PT_CCR, &flags) < 0) |
| 1559 | return -1; |
| 1560 | if (upeek(tcp, sizeof(unsigned long)*PT_R3, &result) < 0) |
| 1561 | return -1; |
| 1562 | if (flags & SO_MASK) |
| 1563 | result = -result; |
| 1564 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1565 | #elif defined(AVR32) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1566 | /* Read complete register set in one go. */ |
| 1567 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, ®s) < 0) |
| 1568 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1569 | #elif defined(BFIN) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 1570 | if (upeek(tcp, PT_R0, &r0) < 0) |
| 1571 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1572 | #elif defined(I386) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1573 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long) &i386_regs) < 0) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1574 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1575 | #elif defined(X86_64) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1576 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long) &x86_64_regs) < 0) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1577 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1578 | #elif defined(IA64) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1579 | # define IA64_PSR_IS ((long)1 << 34) |
| 1580 | if (upeek(tcp, PT_CR_IPSR, &psr) >= 0) |
| 1581 | ia32 = (psr & IA64_PSR_IS) != 0; |
| 1582 | if (upeek(tcp, PT_R8, &r8) < 0) |
| 1583 | return -1; |
| 1584 | if (upeek(tcp, PT_R10, &r10) < 0) |
| 1585 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1586 | #elif defined(ARM) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1587 | /* Read complete register set in one go. */ |
| 1588 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (void *)®s) == -1) |
| 1589 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1590 | #elif defined(M68K) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 1591 | if (upeek(tcp, 4*PT_D0, &d0) < 0) |
| 1592 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1593 | #elif defined(LINUX_MIPSN32) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1594 | unsigned long long regs[38]; |
| 1595 | |
| 1596 | if (ptrace(PTRACE_GETREGS, tcp->pid, NULL, (long) ®s) < 0) |
| 1597 | return -1; |
| 1598 | a3 = regs[REG_A3]; |
| 1599 | r2 = regs[REG_V0]; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1600 | #elif defined(MIPS) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1601 | if (upeek(tcp, REG_A3, &a3) < 0) |
| 1602 | return -1; |
| 1603 | if (upeek(tcp, REG_V0, &r2) < 0) |
| 1604 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1605 | #elif defined(ALPHA) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1606 | if (upeek(tcp, REG_A3, &a3) < 0) |
| 1607 | return -1; |
| 1608 | if (upeek(tcp, REG_R0, &r0) < 0) |
| 1609 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1610 | #elif defined(SPARC) || defined(SPARC64) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1611 | /* Everything we need is in the current register set. */ |
| 1612 | if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) |
| 1613 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1614 | #elif defined(HPPA) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 1615 | if (upeek(tcp, PT_GR28, &r28) < 0) |
| 1616 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1617 | #elif defined(SH) |
| 1618 | #elif defined(SH64) |
| 1619 | #elif defined(CRISV10) || defined(CRISV32) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 1620 | if (upeek(tcp, 4*PT_R10, &r10) < 0) |
| 1621 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1622 | #elif defined(TILE) |
| 1623 | #elif defined(MICROBLAZE) |
Denys Vlasenko | f20bff6 | 2011-08-25 10:31:24 +0200 | [diff] [blame] | 1624 | if (upeek(tcp, 3 * 4, &r3) < 0) |
| 1625 | return -1; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1626 | #endif |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1627 | |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1628 | #if defined(SH) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1629 | /* new syscall ABI returns result in R0 */ |
| 1630 | if (upeek(tcp, 4*REG_REG0, (long *)&r0) < 0) |
| 1631 | return -1; |
| 1632 | #elif defined(SH64) |
| 1633 | /* ABI defines result returned in r9 */ |
| 1634 | if (upeek(tcp, REG_GENERAL(9), (long *)&r9) < 0) |
| 1635 | return -1; |
| 1636 | #endif |
| 1637 | |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1638 | return 1; |
| 1639 | } |
| 1640 | |
Denys Vlasenko | bb6bb5c | 2012-03-20 17:10:35 +0100 | [diff] [blame^] | 1641 | /* Called at each syscall exit */ |
| 1642 | static void |
Denys Vlasenko | 20c41fd | 2011-08-25 10:23:00 +0200 | [diff] [blame] | 1643 | syscall_fixup_on_sysexit(struct tcb *tcp) |
| 1644 | { |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1645 | #if defined(S390) || defined(S390X) |
Denys Vlasenko | 20c41fd | 2011-08-25 10:23:00 +0200 | [diff] [blame] | 1646 | if (syscall_mode != -ENOSYS) |
| 1647 | syscall_mode = tcp->scno; |
Denys Vlasenko | ece9879 | 2011-08-25 10:25:35 +0200 | [diff] [blame] | 1648 | if ((tcp->flags & TCB_WAITEXECVE) |
Denys Vlasenko | 20c41fd | 2011-08-25 10:23:00 +0200 | [diff] [blame] | 1649 | && (gpr2 == -ENOSYS || gpr2 == tcp->scno)) { |
| 1650 | /* |
| 1651 | * Return from execve. |
| 1652 | * Fake a return value of zero. We leave the TCB_WAITEXECVE |
| 1653 | * flag set for the post-execve SIGTRAP to see and reset. |
| 1654 | */ |
| 1655 | gpr2 = 0; |
| 1656 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1657 | #endif |
Denys Vlasenko | 20c41fd | 2011-08-25 10:23:00 +0200 | [diff] [blame] | 1658 | } |
| 1659 | |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1660 | /* |
| 1661 | * Check the syscall return value register value for whether it is |
| 1662 | * a negated errno code indicating an error, or a success return value. |
| 1663 | */ |
| 1664 | static inline int |
| 1665 | is_negated_errno(unsigned long int val) |
| 1666 | { |
| 1667 | unsigned long int max = -(long int) nerrnos; |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1668 | #if SUPPORTED_PERSONALITIES > 1 |
Denys Vlasenko | 9fd4f96 | 2012-03-19 09:36:42 +0100 | [diff] [blame] | 1669 | if (current_wordsize < sizeof(val)) { |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1670 | val = (unsigned int) val; |
| 1671 | max = (unsigned int) max; |
| 1672 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1673 | #endif |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1674 | return val > max; |
| 1675 | } |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1676 | |
| 1677 | static int |
| 1678 | get_error(struct tcb *tcp) |
| 1679 | { |
| 1680 | int u_error = 0; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1681 | int check_errno = 1; |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1682 | if (SCNO_IN_RANGE(tcp->scno) && |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1683 | sysent[tcp->scno].sys_flags & SYSCALL_NEVER_FAILS) { |
| 1684 | check_errno = 0; |
| 1685 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1686 | #if defined(S390) || defined(S390X) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1687 | if (check_errno && is_negated_errno(gpr2)) { |
| 1688 | tcp->u_rval = -1; |
| 1689 | u_error = -gpr2; |
| 1690 | } |
| 1691 | else { |
| 1692 | tcp->u_rval = gpr2; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1693 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1694 | #elif defined(I386) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1695 | if (check_errno && is_negated_errno(i386_regs.eax)) { |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1696 | tcp->u_rval = -1; |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1697 | u_error = -i386_regs.eax; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1698 | } |
| 1699 | else { |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1700 | tcp->u_rval = i386_regs.eax; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1701 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1702 | #elif defined(X86_64) |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1703 | if (check_errno && is_negated_errno(x86_64_regs.rax)) { |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1704 | tcp->u_rval = -1; |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1705 | u_error = -x86_64_regs.rax; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1706 | } |
| 1707 | else { |
Denys Vlasenko | eb0e3e8 | 2011-08-30 18:53:49 +0200 | [diff] [blame] | 1708 | tcp->u_rval = x86_64_regs.rax; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1709 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1710 | #elif defined(IA64) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1711 | if (ia32) { |
| 1712 | int err; |
| 1713 | |
| 1714 | err = (int)r8; |
| 1715 | if (check_errno && is_negated_errno(err)) { |
| 1716 | tcp->u_rval = -1; |
| 1717 | u_error = -err; |
| 1718 | } |
| 1719 | else { |
| 1720 | tcp->u_rval = err; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1721 | } |
| 1722 | } else { |
| 1723 | if (check_errno && r10) { |
| 1724 | tcp->u_rval = -1; |
| 1725 | u_error = r8; |
| 1726 | } else { |
| 1727 | tcp->u_rval = r8; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1728 | } |
| 1729 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1730 | #elif defined(MIPS) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1731 | if (check_errno && a3) { |
| 1732 | tcp->u_rval = -1; |
| 1733 | u_error = r2; |
| 1734 | } else { |
| 1735 | tcp->u_rval = r2; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1736 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1737 | #elif defined(POWERPC) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1738 | if (check_errno && is_negated_errno(result)) { |
| 1739 | tcp->u_rval = -1; |
| 1740 | u_error = -result; |
| 1741 | } |
| 1742 | else { |
| 1743 | tcp->u_rval = result; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1744 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1745 | #elif defined(M68K) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1746 | if (check_errno && is_negated_errno(d0)) { |
| 1747 | tcp->u_rval = -1; |
| 1748 | u_error = -d0; |
| 1749 | } |
| 1750 | else { |
| 1751 | tcp->u_rval = d0; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1752 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1753 | #elif defined(ARM) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1754 | if (check_errno && is_negated_errno(regs.ARM_r0)) { |
| 1755 | tcp->u_rval = -1; |
| 1756 | u_error = -regs.ARM_r0; |
| 1757 | } |
| 1758 | else { |
| 1759 | tcp->u_rval = regs.ARM_r0; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1760 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1761 | #elif defined(AVR32) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1762 | if (check_errno && regs.r12 && (unsigned) -regs.r12 < nerrnos) { |
| 1763 | tcp->u_rval = -1; |
| 1764 | u_error = -regs.r12; |
| 1765 | } |
| 1766 | else { |
| 1767 | tcp->u_rval = regs.r12; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1768 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1769 | #elif defined(BFIN) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1770 | if (check_errno && is_negated_errno(r0)) { |
| 1771 | tcp->u_rval = -1; |
| 1772 | u_error = -r0; |
| 1773 | } else { |
| 1774 | tcp->u_rval = r0; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1775 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1776 | #elif defined(ALPHA) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1777 | if (check_errno && a3) { |
| 1778 | tcp->u_rval = -1; |
| 1779 | u_error = r0; |
| 1780 | } |
| 1781 | else { |
| 1782 | tcp->u_rval = r0; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1783 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1784 | #elif defined(SPARC) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1785 | if (check_errno && regs.psr & PSR_C) { |
| 1786 | tcp->u_rval = -1; |
| 1787 | u_error = regs.u_regs[U_REG_O0]; |
| 1788 | } |
| 1789 | else { |
| 1790 | tcp->u_rval = regs.u_regs[U_REG_O0]; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1791 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1792 | #elif defined(SPARC64) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1793 | if (check_errno && regs.tstate & 0x1100000000UL) { |
| 1794 | tcp->u_rval = -1; |
| 1795 | u_error = regs.u_regs[U_REG_O0]; |
| 1796 | } |
| 1797 | else { |
| 1798 | tcp->u_rval = regs.u_regs[U_REG_O0]; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1799 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1800 | #elif defined(HPPA) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1801 | if (check_errno && is_negated_errno(r28)) { |
| 1802 | tcp->u_rval = -1; |
| 1803 | u_error = -r28; |
| 1804 | } |
| 1805 | else { |
| 1806 | tcp->u_rval = r28; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1807 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1808 | #elif defined(SH) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1809 | if (check_errno && is_negated_errno(r0)) { |
| 1810 | tcp->u_rval = -1; |
| 1811 | u_error = -r0; |
| 1812 | } |
| 1813 | else { |
| 1814 | tcp->u_rval = r0; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1815 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1816 | #elif defined(SH64) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1817 | if (check_errno && is_negated_errno(r9)) { |
| 1818 | tcp->u_rval = -1; |
| 1819 | u_error = -r9; |
| 1820 | } |
| 1821 | else { |
| 1822 | tcp->u_rval = r9; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1823 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1824 | #elif defined(CRISV10) || defined(CRISV32) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1825 | if (check_errno && r10 && (unsigned) -r10 < nerrnos) { |
| 1826 | tcp->u_rval = -1; |
| 1827 | u_error = -r10; |
| 1828 | } |
| 1829 | else { |
| 1830 | tcp->u_rval = r10; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1831 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1832 | #elif defined(TILE) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1833 | long rval; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1834 | if (upeek(tcp, PTREGS_OFFSET_REG(0), &rval) < 0) |
| 1835 | return -1; |
| 1836 | if (check_errno && rval < 0 && rval > -nerrnos) { |
| 1837 | tcp->u_rval = -1; |
| 1838 | u_error = -rval; |
| 1839 | } |
| 1840 | else { |
| 1841 | tcp->u_rval = rval; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1842 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1843 | #elif defined(MICROBLAZE) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1844 | if (check_errno && is_negated_errno(r3)) { |
| 1845 | tcp->u_rval = -1; |
| 1846 | u_error = -r3; |
| 1847 | } |
| 1848 | else { |
| 1849 | tcp->u_rval = r3; |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1850 | } |
Denys Vlasenko | 523635f | 2012-02-25 02:44:25 +0100 | [diff] [blame] | 1851 | #endif |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1852 | tcp->u_error = u_error; |
| 1853 | return 1; |
| 1854 | } |
| 1855 | |
| 1856 | static void |
| 1857 | dumpio(struct tcb *tcp) |
| 1858 | { |
| 1859 | if (syserror(tcp)) |
| 1860 | return; |
| 1861 | if (tcp->u_arg[0] < 0 || tcp->u_arg[0] >= MAX_QUALS) |
| 1862 | return; |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1863 | if (!SCNO_IN_RANGE(tcp->scno)) |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1864 | return; |
| 1865 | if (sysent[tcp->scno].sys_func == printargs) |
| 1866 | return; |
| 1867 | if (qual_flags[tcp->u_arg[0]] & QUAL_READ) { |
| 1868 | if (sysent[tcp->scno].sys_func == sys_read || |
| 1869 | sysent[tcp->scno].sys_func == sys_pread || |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1870 | sysent[tcp->scno].sys_func == sys_recv || |
| 1871 | sysent[tcp->scno].sys_func == sys_recvfrom) |
| 1872 | dumpstr(tcp, tcp->u_arg[1], tcp->u_rval); |
| 1873 | else if (sysent[tcp->scno].sys_func == sys_readv) |
| 1874 | dumpiov(tcp, tcp->u_arg[2], tcp->u_arg[1]); |
| 1875 | return; |
| 1876 | } |
| 1877 | if (qual_flags[tcp->u_arg[0]] & QUAL_WRITE) { |
| 1878 | if (sysent[tcp->scno].sys_func == sys_write || |
| 1879 | sysent[tcp->scno].sys_func == sys_pwrite || |
Denys Vlasenko | a614692 | 2011-08-24 18:07:22 +0200 | [diff] [blame] | 1880 | sysent[tcp->scno].sys_func == sys_send || |
| 1881 | sysent[tcp->scno].sys_func == sys_sendto) |
| 1882 | dumpstr(tcp, tcp->u_arg[1], tcp->u_arg[2]); |
| 1883 | else if (sysent[tcp->scno].sys_func == sys_writev) |
| 1884 | dumpiov(tcp, tcp->u_arg[2], tcp->u_arg[1]); |
| 1885 | return; |
| 1886 | } |
| 1887 | } |
| 1888 | |
Denys Vlasenko | ed4f4f0 | 2011-08-22 11:54:06 +0200 | [diff] [blame] | 1889 | static int |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1890 | trace_syscall_exiting(struct tcb *tcp) |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1891 | { |
| 1892 | int sys_res; |
| 1893 | struct timeval tv; |
Denys Vlasenko | 1a5b5a7 | 2011-08-25 00:29:56 +0200 | [diff] [blame] | 1894 | int res; |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1895 | long u_error; |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1896 | |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1897 | /* Measure the exit time as early as possible to avoid errors. */ |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 1898 | if (Tflag || cflag) |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1899 | gettimeofday(&tv, NULL); |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1900 | |
Dmitry V. Levin | a5a839a | 2011-12-23 00:50:49 +0000 | [diff] [blame] | 1901 | #if SUPPORTED_PERSONALITIES > 1 |
| 1902 | update_personality(tcp, tcp->currpers); |
| 1903 | #endif |
Denys Vlasenko | 1a5b5a7 | 2011-08-25 00:29:56 +0200 | [diff] [blame] | 1904 | res = get_syscall_result(tcp); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1905 | if (res == 0) |
| 1906 | return res; |
Denys Vlasenko | bb6bb5c | 2012-03-20 17:10:35 +0100 | [diff] [blame^] | 1907 | if (res == 1) { |
| 1908 | syscall_fixup_on_sysexit(tcp); /* never fails */ |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1909 | res = get_error(tcp); |
Denys Vlasenko | bb6bb5c | 2012-03-20 17:10:35 +0100 | [diff] [blame^] | 1910 | } |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1911 | if (res == 0) |
| 1912 | return res; |
| 1913 | if (res == 1) |
| 1914 | internal_syscall(tcp); |
Denys Vlasenko | 732d1bf | 2008-12-17 19:21:59 +0000 | [diff] [blame] | 1915 | |
Grant Edwards | 8a08277 | 2011-04-07 20:25:40 +0000 | [diff] [blame] | 1916 | if (res == 1 && filtered(tcp)) { |
Denys Vlasenko | 3b73881 | 2011-08-22 02:06:35 +0200 | [diff] [blame] | 1917 | goto ret; |
Pavel Machek | 4dc3b14 | 2000-02-01 17:58:41 +0000 | [diff] [blame] | 1918 | } |
| 1919 | |
Denys Vlasenko | 7de265d | 2012-03-13 11:44:31 +0100 | [diff] [blame] | 1920 | /* TODO: TCB_REPRINT is probably not necessary: |
| 1921 | * we can determine whether reprinting is needed |
| 1922 | * by examining printing_tcp. Something like: |
| 1923 | * if not in -ff mode, and printing_tcp != tcp, |
| 1924 | * then the log is not currenlty ends with *our* |
| 1925 | * syscall entry output, but with something else, |
| 1926 | * and we need to reprint. |
| 1927 | * If we'd implement this, printing_tcp = tcp |
| 1928 | * assignments in code below can be made more logical. |
| 1929 | */ |
| 1930 | |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1931 | if (tcp->flags & TCB_REPRINT) { |
| 1932 | printleader(tcp); |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1933 | if (!SCNO_IN_RANGE(tcp->scno)) |
Denys Vlasenko | 1a5b5a7 | 2011-08-25 00:29:56 +0200 | [diff] [blame] | 1934 | tprintf("<... syscall_%lu resumed> ", tcp->scno); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1935 | else |
Denys Vlasenko | 1a5b5a7 | 2011-08-25 00:29:56 +0200 | [diff] [blame] | 1936 | tprintf("<... %s resumed> ", sysent[tcp->scno].sys_name); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1937 | } |
| 1938 | |
| 1939 | if (cflag) { |
| 1940 | struct timeval t = tv; |
Denys Vlasenko | c95a88f | 2011-08-21 17:47:40 +0200 | [diff] [blame] | 1941 | count_syscall(tcp, &t); |
Denys Vlasenko | 7b609d5 | 2011-06-22 14:32:43 +0200 | [diff] [blame] | 1942 | if (cflag == CFLAG_ONLY_STATS) { |
Denys Vlasenko | 3b73881 | 2011-08-22 02:06:35 +0200 | [diff] [blame] | 1943 | goto ret; |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1944 | } |
| 1945 | } |
| 1946 | |
| 1947 | if (res != 1) { |
Denys Vlasenko | 7de265d | 2012-03-13 11:44:31 +0100 | [diff] [blame] | 1948 | printing_tcp = tcp; |
Denys Vlasenko | 60fe8c1 | 2011-09-01 10:00:28 +0200 | [diff] [blame] | 1949 | tprints(") "); |
Denys Vlasenko | 102ec49 | 2011-08-25 01:27:59 +0200 | [diff] [blame] | 1950 | tabto(); |
Denys Vlasenko | 000b601 | 2012-01-28 01:25:03 +0100 | [diff] [blame] | 1951 | tprints("= ? <unavailable>\n"); |
Denys Vlasenko | 7de265d | 2012-03-13 11:44:31 +0100 | [diff] [blame] | 1952 | line_ended(); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1953 | tcp->flags &= ~TCB_INSYSCALL; |
| 1954 | return res; |
| 1955 | } |
| 1956 | |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1957 | if (!SCNO_IN_RANGE(tcp->scno) |
Denys Vlasenko | 7de265d | 2012-03-13 11:44:31 +0100 | [diff] [blame] | 1958 | || (qual_flags[tcp->scno] & QUAL_RAW)) { |
| 1959 | printing_tcp = tcp; |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1960 | sys_res = printargs(tcp); |
Denys Vlasenko | 7de265d | 2012-03-13 11:44:31 +0100 | [diff] [blame] | 1961 | } else { |
Denys Vlasenko | 3b73881 | 2011-08-22 02:06:35 +0200 | [diff] [blame] | 1962 | /* FIXME: not_failing_only (IOW, option -z) is broken: |
| 1963 | * failure of syscall is known only after syscall return. |
| 1964 | * Thus we end up with something like this on, say, ENOENT: |
| 1965 | * open("doesnt_exist", O_RDONLY <unfinished ...> |
| 1966 | * {next syscall decode} |
| 1967 | * whereas the intended result is that open(...) line |
| 1968 | * is not shown at all. |
| 1969 | */ |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1970 | if (not_failing_only && tcp->u_error) |
Denys Vlasenko | 3b73881 | 2011-08-22 02:06:35 +0200 | [diff] [blame] | 1971 | goto ret; /* ignore failed syscalls */ |
Denys Vlasenko | 7de265d | 2012-03-13 11:44:31 +0100 | [diff] [blame] | 1972 | printing_tcp = tcp; |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1973 | sys_res = (*sysent[tcp->scno].sys_func)(tcp); |
| 1974 | } |
| 1975 | |
Denys Vlasenko | 60fe8c1 | 2011-09-01 10:00:28 +0200 | [diff] [blame] | 1976 | tprints(") "); |
Denys Vlasenko | 102ec49 | 2011-08-25 01:27:59 +0200 | [diff] [blame] | 1977 | tabto(); |
Denys Vlasenko | 3b73881 | 2011-08-22 02:06:35 +0200 | [diff] [blame] | 1978 | u_error = tcp->u_error; |
Denys Vlasenko | cb6f056 | 2011-08-25 01:13:43 +0200 | [diff] [blame] | 1979 | if (!SCNO_IN_RANGE(tcp->scno) || |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 1980 | qual_flags[tcp->scno] & QUAL_RAW) { |
| 1981 | if (u_error) |
| 1982 | tprintf("= -1 (errno %ld)", u_error); |
| 1983 | else |
| 1984 | tprintf("= %#lx", tcp->u_rval); |
| 1985 | } |
| 1986 | else if (!(sys_res & RVAL_NONE) && u_error) { |
| 1987 | switch (u_error) { |
Denys Vlasenko | fe58565 | 2012-01-12 11:26:34 +0100 | [diff] [blame] | 1988 | /* Blocked signals do not interrupt any syscalls. |
| 1989 | * In this case syscalls don't return ERESTARTfoo codes. |
| 1990 | * |
| 1991 | * Deadly signals set to SIG_DFL interrupt syscalls |
| 1992 | * and kill the process regardless of which of the codes below |
| 1993 | * is returned by the interrupted syscall. |
| 1994 | * In some cases, kernel forces a kernel-generated deadly |
| 1995 | * signal to be unblocked and set to SIG_DFL (and thus cause |
| 1996 | * death) if it is blocked or SIG_IGNed: for example, SIGSEGV |
| 1997 | * or SIGILL. (The alternative is to leave process spinning |
| 1998 | * forever on the faulty instruction - not useful). |
| 1999 | * |
| 2000 | * SIG_IGNed signals and non-deadly signals set to SIG_DFL |
| 2001 | * (for example, SIGCHLD, SIGWINCH) interrupt syscalls, |
| 2002 | * but kernel will always restart them. |
| 2003 | */ |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2004 | case ERESTARTSYS: |
Denys Vlasenko | fe58565 | 2012-01-12 11:26:34 +0100 | [diff] [blame] | 2005 | /* Most common type of signal-interrupted syscall exit code. |
| 2006 | * The system call will be restarted with the same arguments |
| 2007 | * if SA_RESTART is set; otherwise, it will fail with EINTR. |
| 2008 | */ |
| 2009 | tprints("= ? ERESTARTSYS (To be restarted if SA_RESTART is set)"); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2010 | break; |
| 2011 | case ERESTARTNOINTR: |
Denys Vlasenko | fe58565 | 2012-01-12 11:26:34 +0100 | [diff] [blame] | 2012 | /* Rare. For example, fork() returns this if interrupted. |
| 2013 | * SA_RESTART is ignored (assumed set): the restart is unconditional. |
| 2014 | */ |
Denys Vlasenko | 60fe8c1 | 2011-09-01 10:00:28 +0200 | [diff] [blame] | 2015 | tprints("= ? ERESTARTNOINTR (To be restarted)"); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2016 | break; |
| 2017 | case ERESTARTNOHAND: |
Denys Vlasenko | fe58565 | 2012-01-12 11:26:34 +0100 | [diff] [blame] | 2018 | /* pause(), rt_sigsuspend() etc use this code. |
| 2019 | * SA_RESTART is ignored (assumed not set): |
| 2020 | * syscall won't restart (will return EINTR instead) |
| 2021 | * even after signal with SA_RESTART set. |
| 2022 | * However, after SIG_IGN or SIG_DFL signal it will. |
| 2023 | */ |
| 2024 | tprints("= ? ERESTARTNOHAND (Interrupted by signal)"); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2025 | break; |
| 2026 | case ERESTART_RESTARTBLOCK: |
Denys Vlasenko | fe58565 | 2012-01-12 11:26:34 +0100 | [diff] [blame] | 2027 | /* Syscalls like nanosleep(), poll() which can't be |
| 2028 | * restarted with their original arguments use this |
| 2029 | * code. Kernel will execute restart_syscall() instead, |
| 2030 | * which changes arguments before restarting syscall. |
| 2031 | * SA_RESTART is ignored (assumed not set) similarly |
| 2032 | * to ERESTARTNOHAND. (Kernel can't honor SA_RESTART |
| 2033 | * since restart data is saved in "restart block" |
| 2034 | * in task struct, and if signal handler uses a syscall |
| 2035 | * which in turn saves another such restart block, |
| 2036 | * old data is lost and restart becomes impossible) |
| 2037 | */ |
| 2038 | tprints("= ? ERESTART_RESTARTBLOCK (Interrupted by signal)"); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2039 | break; |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2040 | default: |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2041 | if (u_error < 0) |
Denys Vlasenko | a794974 | 2011-08-21 17:26:55 +0200 | [diff] [blame] | 2042 | tprintf("= -1 E??? (errno %ld)", u_error); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2043 | else if (u_error < nerrnos) |
Denys Vlasenko | a794974 | 2011-08-21 17:26:55 +0200 | [diff] [blame] | 2044 | tprintf("= -1 %s (%s)", errnoent[u_error], |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2045 | strerror(u_error)); |
| 2046 | else |
Denys Vlasenko | a794974 | 2011-08-21 17:26:55 +0200 | [diff] [blame] | 2047 | tprintf("= -1 ERRNO_%ld (%s)", u_error, |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2048 | strerror(u_error)); |
| 2049 | break; |
| 2050 | } |
| 2051 | if ((sys_res & RVAL_STR) && tcp->auxstr) |
| 2052 | tprintf(" (%s)", tcp->auxstr); |
| 2053 | } |
| 2054 | else { |
| 2055 | if (sys_res & RVAL_NONE) |
Denys Vlasenko | 60fe8c1 | 2011-09-01 10:00:28 +0200 | [diff] [blame] | 2056 | tprints("= ?"); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2057 | else { |
| 2058 | switch (sys_res & RVAL_MASK) { |
| 2059 | case RVAL_HEX: |
| 2060 | tprintf("= %#lx", tcp->u_rval); |
| 2061 | break; |
| 2062 | case RVAL_OCTAL: |
| 2063 | tprintf("= %#lo", tcp->u_rval); |
| 2064 | break; |
| 2065 | case RVAL_UDECIMAL: |
| 2066 | tprintf("= %lu", tcp->u_rval); |
| 2067 | break; |
| 2068 | case RVAL_DECIMAL: |
| 2069 | tprintf("= %ld", tcp->u_rval); |
| 2070 | break; |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2071 | default: |
| 2072 | fprintf(stderr, |
| 2073 | "invalid rval format\n"); |
| 2074 | break; |
| 2075 | } |
| 2076 | } |
| 2077 | if ((sys_res & RVAL_STR) && tcp->auxstr) |
| 2078 | tprintf(" (%s)", tcp->auxstr); |
| 2079 | } |
Denys Vlasenko | a50d2a8 | 2012-03-15 12:49:52 +0100 | [diff] [blame] | 2080 | if (Tflag) { |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2081 | tv_sub(&tv, &tv, &tcp->etime); |
| 2082 | tprintf(" <%ld.%06ld>", |
| 2083 | (long) tv.tv_sec, (long) tv.tv_usec); |
| 2084 | } |
Denys Vlasenko | 000b601 | 2012-01-28 01:25:03 +0100 | [diff] [blame] | 2085 | tprints("\n"); |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2086 | dumpio(tcp); |
Denys Vlasenko | 7de265d | 2012-03-13 11:44:31 +0100 | [diff] [blame] | 2087 | line_ended(); |
| 2088 | |
Denys Vlasenko | 3b73881 | 2011-08-22 02:06:35 +0200 | [diff] [blame] | 2089 | ret: |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2090 | tcp->flags &= ~TCB_INSYSCALL; |
| 2091 | return 0; |
| 2092 | } |
| 2093 | |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 2094 | int |
Dmitry V. Levin | 7d7c963 | 2010-03-29 17:51:02 +0000 | [diff] [blame] | 2095 | trace_syscall(struct tcb *tcp) |
| 2096 | { |
| 2097 | return exiting(tcp) ? |
| 2098 | trace_syscall_exiting(tcp) : trace_syscall_entering(tcp); |
| 2099 | } |