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Wichert Akkerman76baf7c1999-02-19 00:21:36 +00001/*
2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000028 */
29
Roland McGrath795edb12005-02-02 04:44:57 +000030#ifdef HAVE_CONFIG_H
Denys Vlasenko329655a2012-02-25 02:42:32 +010031# include "config.h"
Roland McGrath795edb12005-02-02 04:44:57 +000032#endif
Dmitry V. Levin2690fad2013-05-07 08:03:41 +000033
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010034#ifdef MIPS
Mike Frysinger3883ab82013-05-07 10:50:20 -040035# include <sgidefs.h>
Dmitry V. Levin2690fad2013-05-07 08:03:41 +000036# if _MIPS_SIM == _MIPS_SIM_ABI64
37# define LINUX_MIPSN64
38# elif _MIPS_SIM == _MIPS_SIM_NABI32
39# define LINUX_MIPSN32
40# elif _MIPS_SIM == _MIPS_SIM_ABI32
41# define LINUX_MIPSO32
42# else
43# error Unsupported _MIPS_SIM
44# endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010045#endif
Dmitry V. Levin2690fad2013-05-07 08:03:41 +000046
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010047#include <features.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010048#ifdef HAVE_STDBOOL_H
49# include <stdbool.h>
50#endif
51#include <stdint.h>
52#include <inttypes.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010053#include <sys/types.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010054#ifdef STDC_HEADERS
55# include <stddef.h>
56#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010057#include <unistd.h>
58#include <stdlib.h>
59#include <stdio.h>
Denys Vlasenko5198ed42013-03-06 23:44:23 +010060/* Open-coding isprint(ch) et al proved more efficient than calling
61 * generalized libc interface. We don't *want* to do non-ASCII anyway.
62 */
63/* #include <ctype.h> */
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010064#include <string.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010065#include <errno.h>
66#include <signal.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010067#include <time.h>
68#include <sys/time.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010069#include <sys/syscall.h>
Roland McGrathe6d3a292003-01-14 09:46:18 +000070
Denys Vlasenko29898142012-03-15 15:02:49 +010071#ifndef HAVE_STRERROR
72const char *strerror(int);
73#endif
Denys Vlasenko29898142012-03-15 15:02:49 +010074#ifndef HAVE_STPCPY
75/* Some libc have stpcpy, some don't. Sigh...
76 * Roll our private implementation...
77 */
78#undef stpcpy
79#define stpcpy strace_stpcpy
80extern char *stpcpy(char *dst, const char *src);
81#endif
82
83#if !defined __GNUC__
84# define __attribute__(x) /*nothing*/
85#endif
86
Denys Vlasenko513e9c22012-03-21 14:39:22 +010087#ifndef offsetof
88# define offsetof(type, member) \
89 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL))
90#endif
91
Denys Vlasenko29898142012-03-15 15:02:49 +010092#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
93
Mike Frysingerd648f292013-05-01 23:35:30 -040094/* macros */
95#ifndef MAX
96# define MAX(a, b) (((a) > (b)) ? (a) : (b))
97#endif
98#ifndef MIN
99# define MIN(a, b) (((a) < (b)) ? (a) : (b))
100#endif
101#define CLAMP(val, min, max) MIN(MAX(min, val), max)
102
Denys Vlasenkoe4cc7c52012-03-23 11:29:01 +0100103/* Glibc has an efficient macro for sigemptyset
104 * (it just does one or two assignments of 0 to internal vector of longs).
105 */
106#if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
107# define sigemptyset __sigemptyset
108#endif
109
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200110/* Configuration section */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000111#ifndef DEFAULT_STRLEN
Denys Vlasenko041b3ee2011-08-18 12:48:56 +0200112/* default maximum # of bytes printed in `printstr', change with -s switch */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100113# define DEFAULT_STRLEN 32
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000114#endif
115#ifndef DEFAULT_ACOLUMN
Denys Vlasenko329655a2012-02-25 02:42:32 +0100116# define DEFAULT_ACOLUMN 40 /* default alignment column for results */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000117#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100118/*
119 * Maximum number of args to a syscall.
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200120 *
Denys Vlasenkoaa925db2012-02-25 15:19:02 +0100121 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS!
Dmitry V. Levin2690fad2013-05-07 08:03:41 +0000122 * linux/<ARCH>/syscallent*.h:
123 * all have nargs <= 6 except mips o32 which has nargs <= 7.
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200124 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000125#ifndef MAX_ARGS
Dmitry V. Levin2690fad2013-05-07 08:03:41 +0000126# ifdef LINUX_MIPSO32
127# define MAX_ARGS 7
128# else
129# define MAX_ARGS 6
130# endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000131#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100132/* default sorting method for call profiling */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000133#ifndef DEFAULT_SORTBY
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100134# define DEFAULT_SORTBY "time"
John Hughes58265892001-10-18 15:13:53 +0000135#endif
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100136/*
137 * Experimental code using PTRACE_SEIZE can be enabled here.
Denys Vlasenko9472a272013-02-12 11:43:46 +0100138 * This needs Linux kernel 3.4.x or later to work.
139 */
140#define USE_SEIZE 1
Denys Vlasenko05f32512013-02-26 12:00:34 +0100141/* To force NOMMU build, set to 1 */
Denys Vlasenko5c9d8f42013-02-19 15:30:12 +0100142#define NOMMU_SYSTEM 0
Denys Vlasenko76da8312013-07-16 12:18:59 +0200143/*
144 * Set to 1 to use speed-optimized vfprintf implementation.
145 * It results in strace using about 5% less CPU in user space
146 * (compared to glibc version).
147 * But strace spends a lot of time in kernel space,
148 * so overall it does not appear to be a significant win.
149 * Thus disabled by default.
150 */
151#define USE_CUSTOM_PRINTF 0
Denys Vlasenko5c9d8f42013-02-19 15:30:12 +0100152
Dmitry V. Levin03ef0b22013-11-13 18:09:04 +0000153#ifdef NEED_PTRACE_PROTOTYPE_WORKAROUND
Denys Vlasenko329655a2012-02-25 02:42:32 +0100154# define ptrace xptrace
155# include <sys/ptrace.h>
156# undef ptrace
Denys Vlasenko329655a2012-02-25 02:42:32 +0100157extern long ptrace(int, int, char *, long);
Dmitry V. Levin03ef0b22013-11-13 18:09:04 +0000158#else
159# include <sys/ptrace.h>
160#endif
161
162#if defined(POWERPC)
163# include <asm/ptrace.h>
Denys Vlasenko329655a2012-02-25 02:42:32 +0100164#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000165
Denys Vlasenko2550d482013-02-15 21:04:28 +0100166#if defined(TILE)
167# include <asm/ptrace.h> /* struct pt_regs */
168#endif
169
Denys Vlasenko47932212013-06-30 23:53:49 +0200170#ifndef ERESTARTSYS
171# define ERESTARTSYS 512
172#endif
173#ifndef ERESTARTNOINTR
174# define ERESTARTNOINTR 513
175#endif
176#ifndef ERESTARTNOHAND
177# define ERESTARTNOHAND 514
178#endif
179#ifndef ERESTART_RESTARTBLOCK
180# define ERESTART_RESTARTBLOCK 516
181#endif
182
Denys Vlasenko9472a272013-02-12 11:43:46 +0100183#if !HAVE_DECL_PTRACE_SETOPTIONS
184# define PTRACE_SETOPTIONS 0x4200
185#endif
186#if !HAVE_DECL_PTRACE_GETEVENTMSG
187# define PTRACE_GETEVENTMSG 0x4201
188#endif
189#if !HAVE_DECL_PTRACE_GETSIGINFO
190# define PTRACE_GETSIGINFO 0x4202
191#endif
192
193#if !HAVE_DECL_PTRACE_O_TRACESYSGOOD
194# define PTRACE_O_TRACESYSGOOD 0x00000001
195#endif
196#if !HAVE_DECL_PTRACE_O_TRACEFORK
197# define PTRACE_O_TRACEFORK 0x00000002
198#endif
199#if !HAVE_DECL_PTRACE_O_TRACEVFORK
200# define PTRACE_O_TRACEVFORK 0x00000004
201#endif
202#if !HAVE_DECL_PTRACE_O_TRACECLONE
203# define PTRACE_O_TRACECLONE 0x00000008
204#endif
205#if !HAVE_DECL_PTRACE_O_TRACEEXEC
206# define PTRACE_O_TRACEEXEC 0x00000010
207#endif
208#if !HAVE_DECL_PTRACE_O_TRACEEXIT
209# define PTRACE_O_TRACEEXIT 0x00000040
210#endif
211
212#if !HAVE_DECL_PTRACE_EVENT_FORK
213# define PTRACE_EVENT_FORK 1
214#endif
215#if !HAVE_DECL_PTRACE_EVENT_VFORK
216# define PTRACE_EVENT_VFORK 2
217#endif
218#if !HAVE_DECL_PTRACE_EVENT_CLONE
219# define PTRACE_EVENT_CLONE 3
220#endif
221#if !HAVE_DECL_PTRACE_EVENT_EXEC
222# define PTRACE_EVENT_EXEC 4
223#endif
224#if !HAVE_DECL_PTRACE_EVENT_VFORK_DONE
225# define PTRACE_EVENT_VFORK_DONE 5
226#endif
227#if !HAVE_DECL_PTRACE_EVENT_EXIT
228# define PTRACE_EVENT_EXIT 6
229#endif
230
Dmitry V. Levin6974bd42013-11-12 21:20:50 +0000231#if !HAVE_DECL_PTRACE_PEEKUSER
Denys Vlasenko329655a2012-02-25 02:42:32 +0100232# define PTRACE_PEEKUSER PTRACE_PEEKUSR
Dmitry V. Levin6974bd42013-11-12 21:20:50 +0000233#endif
234#if !HAVE_DECL_PTRACE_POKEUSER
Denys Vlasenko329655a2012-02-25 02:42:32 +0100235# define PTRACE_POKEUSER PTRACE_POKEUSR
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000236#endif
Denys Vlasenko9472a272013-02-12 11:43:46 +0100237
Denys Vlasenkof1669e72013-06-18 18:09:39 +0200238#undef PTRACE_SEIZE
239#define PTRACE_SEIZE 0x4206
240#undef PTRACE_INTERRUPT
241#define PTRACE_INTERRUPT 0x4207
242#undef PTRACE_LISTEN
243#define PTRACE_LISTEN 0x4208
244#undef PTRACE_EVENT_STOP
245#define PTRACE_EVENT_STOP 128
Denys Vlasenko9472a272013-02-12 11:43:46 +0100246
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000247#ifdef ALPHA
Denys Vlasenko329655a2012-02-25 02:42:32 +0100248# define REG_R0 0
249# define REG_A0 16
250# define REG_A3 19
251# define REG_FP 30
252# define REG_PC 64
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000253#endif /* ALPHA */
Wichert Akkermanf90da011999-10-31 21:15:38 +0000254#ifdef MIPS
Denys Vlasenko329655a2012-02-25 02:42:32 +0100255# define REG_V0 2
256# define REG_A0 4
257# define REG_A3 7
258# define REG_SP 29
259# define REG_EPC 64
Wichert Akkermanf90da011999-10-31 21:15:38 +0000260#endif /* MIPS */
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000261#ifdef HPPA
Denys Vlasenko329655a2012-02-25 02:42:32 +0100262# define PT_GR20 (20*4)
263# define PT_GR26 (26*4)
264# define PT_GR28 (28*4)
265# define PT_IAOQ0 (106*4)
266# define PT_IAOQ1 (107*4)
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000267#endif /* HPPA */
Roland McGrathf5a47772003-06-26 22:40:42 +0000268#ifdef SH64
269 /* SH64 Linux - this code assumes the following kernel API for system calls:
Roland McGrathe1e584b2003-06-02 19:18:58 +0000270 PC Offset 0
271 System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
272 where n = no. of parameters.
273 Other regs Offset 24+
274
275 On entry: R2-7 = parameters 1-6 (as many as necessary)
276 On return: R9 = result. */
277
278 /* Offset for peeks of registers */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100279# define REG_OFFSET (24)
280# define REG_GENERAL(x) (8*(x)+REG_OFFSET)
281# define REG_PC (0*8)
282# define REG_SYSCALL (2*8)
Roland McGrathf5a47772003-06-26 22:40:42 +0000283#endif /* SH64 */
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000284#ifdef AARCH64
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000285struct arm_pt_regs {
Denys Vlasenko28ac68f2013-02-08 12:38:51 +0100286 int uregs[18];
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000287};
Denys Vlasenko28ac68f2013-02-08 12:38:51 +0100288# define ARM_cpsr uregs[16]
289# define ARM_pc uregs[15]
290# define ARM_lr uregs[14]
291# define ARM_sp uregs[13]
292# define ARM_ip uregs[12]
293# define ARM_fp uregs[11]
294# define ARM_r10 uregs[10]
295# define ARM_r9 uregs[9]
296# define ARM_r8 uregs[8]
297# define ARM_r7 uregs[7]
298# define ARM_r6 uregs[6]
299# define ARM_r5 uregs[5]
300# define ARM_r4 uregs[4]
301# define ARM_r3 uregs[3]
302# define ARM_r2 uregs[2]
303# define ARM_r1 uregs[1]
304# define ARM_r0 uregs[0]
305# define ARM_ORIG_r0 uregs[17]
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000306#endif /* AARCH64 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000307
Denys Vlasenko9472a272013-02-12 11:43:46 +0100308#if defined(SPARC) || defined(SPARC64)
Mike Frysinger8566c502009-10-12 11:05:14 -0400309/* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
310 * by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100311# define U_REG_G1 0
312# define U_REG_O0 7
313# define U_REG_O1 8
314# define PERSONALITY0_WORDSIZE 4
315# define PERSONALITY1_WORDSIZE 4
Denys Vlasenko329655a2012-02-25 02:42:32 +0100316# if defined(SPARC64)
317# include <asm/psrcompat.h>
318# define SUPPORTED_PERSONALITIES 3
319# define PERSONALITY2_WORDSIZE 8
320# else
321# include <asm/psr.h>
322# define SUPPORTED_PERSONALITIES 2
323# endif /* SPARC64 */
Denys Vlasenko9472a272013-02-12 11:43:46 +0100324#endif /* SPARC[64] */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000325
Michal Ludvig0e035502002-09-23 15:41:01 +0000326#ifdef X86_64
H.J. Lu35be5812012-04-16 13:00:01 +0200327# define SUPPORTED_PERSONALITIES 3
Denys Vlasenko329655a2012-02-25 02:42:32 +0100328# define PERSONALITY0_WORDSIZE 8
329# define PERSONALITY1_WORDSIZE 4
H.J. Lu35be5812012-04-16 13:00:01 +0200330# define PERSONALITY2_WORDSIZE 4
Roland McGrathee9d4352002-12-18 04:16:10 +0000331#endif
332
H.J. Lu085e4282012-04-17 11:05:04 -0700333#ifdef X32
H.J. Lu085e4282012-04-17 11:05:04 -0700334# define SUPPORTED_PERSONALITIES 2
335# define PERSONALITY0_WORDSIZE 4
336# define PERSONALITY1_WORDSIZE 4
337#endif
338
Roland McGrath56703312008-05-20 01:35:55 +0000339#ifdef ARM
Denys Vlasenko7270de52013-02-21 15:46:34 +0100340/* one personality */
Roland McGrath56703312008-05-20 01:35:55 +0000341#endif
342
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000343#ifdef AARCH64
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000344/* The existing ARM personality, then AArch64 */
345# define SUPPORTED_PERSONALITIES 2
346# define PERSONALITY0_WORDSIZE 4
347# define PERSONALITY1_WORDSIZE 8
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000348# define DEFAULT_PERSONALITY 1
349#endif
350
Andreas Schwabd69fa492010-07-12 21:39:57 +0200351#ifdef POWERPC64
Denys Vlasenko329655a2012-02-25 02:42:32 +0100352# define SUPPORTED_PERSONALITIES 2
353# define PERSONALITY0_WORDSIZE 8
354# define PERSONALITY1_WORDSIZE 4
Andreas Schwabd69fa492010-07-12 21:39:57 +0200355#endif
356
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100357#ifdef TILE
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100358# define SUPPORTED_PERSONALITIES 2
359# define PERSONALITY0_WORDSIZE 8
360# define PERSONALITY1_WORDSIZE 4
361# ifdef __tilepro__
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100362# define DEFAULT_PERSONALITY 1
363# endif
364#endif
365
Denys Vlasenko9472a272013-02-12 11:43:46 +0100366#ifndef SUPPORTED_PERSONALITIES
367# define SUPPORTED_PERSONALITIES 1
368#endif
369#ifndef DEFAULT_PERSONALITY
370# define DEFAULT_PERSONALITY 0
371#endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100372#ifndef PERSONALITY0_WORDSIZE
James Hogan3b09ebe2014-05-02 14:15:41 +0100373# define PERSONALITY0_WORDSIZE SIZEOF_LONG
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100374#endif
375
Denys Vlasenkob51f3642013-07-16 12:06:25 +0200376#if defined(I386) || defined(X86_64)
377extern uint32_t *const i386_esp_ptr;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100378#elif defined(IA64)
Denys Vlasenkoc09646a2013-07-01 12:28:17 +0200379extern bool ia64_ia32mode;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100380#elif defined(SPARC) || defined(SPARC64)
Denys Vlasenko48e4c1b2013-02-16 08:23:40 +0100381extern struct pt_regs sparc_regs;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100382#elif defined(ARM)
Denys Vlasenko401374e2013-02-06 18:24:39 +0100383extern struct pt_regs arm_regs;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100384#elif defined(TILE)
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100385extern struct pt_regs tile_regs;
Anton Blanchardce6e33b2013-06-26 15:53:33 +0200386#elif defined(POWERPC)
387extern struct pt_regs ppc_regs;
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100388#endif
Denys Vlasenkob11322f2012-01-10 16:40:35 +0100389
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100390typedef struct sysent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100391 unsigned nargs;
392 int sys_flags;
393 int (*sys_func)();
394 const char *sys_name;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100395} struct_sysent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100396
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100397typedef struct ioctlent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100398 const char *symbol;
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000399 unsigned int code;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100400} struct_ioctlent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100401
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000402/* Trace Control Block */
403struct tcb {
Denys Vlasenkod9ec1412011-08-20 01:39:05 +0200404 int flags; /* See below for TCB_ values */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200405 int pid; /* If 0, this tcb is free */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100406 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200407 int u_error; /* Error code */
408 long scno; /* System call number */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000409 long u_arg[MAX_ARGS]; /* System call arguments */
H.J. Lu35be5812012-04-16 13:00:01 +0200410#if defined(LINUX_MIPSN32) || defined(X32)
Denys Vlasenko9472a272013-02-12 11:43:46 +0100411 long long ext_arg[MAX_ARGS];
H.J. Ludd0130b2012-04-16 12:16:45 +0200412 long long u_lrval; /* long long return value */
413#endif
Denys Vlasenko9472a272013-02-12 11:43:46 +0100414 long u_rval; /* Return value */
Dmitry V. Levina5a839a2011-12-23 00:50:49 +0000415#if SUPPORTED_PERSONALITIES > 1
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000416 unsigned int currpers; /* Personality at the time of scno update */
Dmitry V. Levina5a839a2011-12-23 00:50:49 +0000417#endif
Andreas Schwabccdff482009-10-27 16:27:13 +0100418 int curcol; /* Output column for this process */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200419 FILE *outf; /* Output file for this process */
Wichert Akkerman43a74822000-06-27 17:33:32 +0000420 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100421 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000422 struct timeval stime; /* System time usage as of last process wait */
423 struct timeval dtime; /* Delta for system time usage */
424 struct timeval etime; /* Syscall entry time */
Denys Vlasenkoa61a72e2012-03-17 12:41:27 +0100425 /* Support for tracing forked processes: */
426 long inst[2]; /* Saved clone args (badly named) */
Luca Clementi327064b2013-07-23 00:11:35 -0700427
428#ifdef USE_LIBUNWIND
429 struct UPT_info* libunwind_ui;
430 struct mmap_cache_t* mmap_cache;
431 unsigned int mmap_cache_size;
Masatake YAMATO9bc65612014-04-16 15:33:07 +0900432 unsigned int mmap_cache_generation;
Masatake YAMATOf8e39d72014-04-16 15:33:06 +0900433 struct queue_t* queue;
Luca Clementi327064b2013-07-23 00:11:35 -0700434#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000435};
436
437/* TCB flags */
Denys Vlasenko68269aa2012-03-15 13:02:31 +0100438/* We have attached to this process, but did not see it stopping yet */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200439#define TCB_STARTUP 0x01
440#define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200441/*
442 * Are we in system call entry or in syscall exit?
443 *
444 * This bit is set after all syscall entry processing is done.
445 * Therefore, this bit will be set when next ptrace stop occurs,
446 * which should be syscall exit stop. Other stops which are possible
447 * directly after syscall entry (death, ptrace event stop)
448 * are simpler and handled without calling trace_syscall(), therefore
449 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
450 * are limited to trace(), this condition is never observed in trace_syscall()
451 * and below.
452 * The bit is cleared after all syscall exit processing is done.
453 * User-generated SIGTRAPs and post-execve SIGTRAP make it necessary
454 * to be very careful and NOT set TCB_INSYSCALL bit when they are encountered.
455 * TCB_WAITEXECVE bit is used for this purpose (see below).
456 *
457 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
458 */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200459#define TCB_INSYSCALL 0x04
460#define TCB_ATTACHED 0x08 /* We attached to it already */
461#define TCB_BPTSET 0x10 /* "Breakpoint" set after fork(2) */
462#define TCB_REPRINT 0x20 /* We should reprint this syscall on exit */
463#define TCB_FILTERED 0x40 /* This system call has been filtered out */
464/*
465 * x86 does not need TCB_WAITEXECVE.
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100466 * It can detect post-execve SIGTRAP by looking at eax/rax.
467 * See "not a syscall entry (eax = %ld)\n" message.
468 *
469 * Note! On new kernels (about 2.5.46+), we use PTRACE_O_TRACEEXEC, which
470 * suppresses post-execve SIGTRAP. If you are adding a new arch which is
471 * only supported by newer kernels, you most likely don't need to define
472 * TCB_WAITEXECVE!
Denys Vlasenkobc161ec2009-01-02 18:02:45 +0000473 */
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100474#if defined(ALPHA) \
475 || defined(SPARC) || defined(SPARC64) \
476 || defined(POWERPC) \
477 || defined(IA64) \
478 || defined(HPPA) \
479 || defined(SH) || defined(SH64) \
480 || defined(S390) || defined(S390X) \
Denys Vlasenkobf357fc2013-02-12 13:06:51 +0100481 || defined(ARM) \
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100482 || defined(MIPS)
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200483/* This tracee has entered into execve syscall. Expect post-execve SIGTRAP
484 * to happen. (When it is detected, tracee is continued and this bit is cleared.)
485 */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200486# define TCB_WAITEXECVE 0x80
Denys Vlasenko329655a2012-02-25 02:42:32 +0100487#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000488
489/* qualifier flags */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100490#define QUAL_TRACE 0x001 /* this system call should be traced */
491#define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
492#define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
493#define QUAL_RAW 0x008 /* print all args in hex for this syscall */
494#define QUAL_SIGNAL 0x010 /* report events with this signal */
Denys Vlasenkoc1540fe2013-02-21 16:17:08 +0100495#define QUAL_READ 0x020 /* dump data read on this file descriptor */
496#define QUAL_WRITE 0x040 /* dump data written to this file descriptor */
Denys Vlasenkoa585c9d2013-02-21 16:15:43 +0100497typedef uint8_t qualbits_t;
Denys Vlasenkoc1540fe2013-02-21 16:17:08 +0100498#define UNDEFINED_SCNO 0x100 /* Used only in tcp->qual_flg */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100499
500#define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000501
502#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
503#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
504#define syserror(tcp) ((tcp)->u_error != 0)
Denys Vlasenko40d63b92013-02-22 13:23:38 +0100505#define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
506#define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
Grant Edwards8a082772011-04-07 20:25:40 +0000507#define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000508
509struct xlat {
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000510 unsigned int val;
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000511 const char *str;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000512};
Dmitry V. Levina69ddcb2014-02-05 01:28:45 +0000513#define XLAT(x) { x, #x }
Dmitry V. Levin82b1ea72014-02-05 02:18:52 +0000514#define XLAT_END { 0, NULL }
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000515
Denys Vlasenkof535b542009-01-13 18:30:55 +0000516extern const struct xlat addrfams[];
Dmitry V. Levin43b110b2014-12-06 03:53:16 +0000517extern const struct xlat at_flags[];
Denys Vlasenkof535b542009-01-13 18:30:55 +0000518extern const struct xlat open_access_modes[];
Dmitry V. Levin43b110b2014-12-06 03:53:16 +0000519extern const struct xlat open_mode_flags[];
Denys Vlasenko86738a22013-02-17 14:31:55 +0100520extern const struct xlat whence_codes[];
Denys Vlasenkof535b542009-01-13 18:30:55 +0000521
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000522/* Format of syscall return values */
523#define RVAL_DECIMAL 000 /* decimal format */
524#define RVAL_HEX 001 /* hex format */
525#define RVAL_OCTAL 002 /* octal format */
526#define RVAL_UDECIMAL 003 /* unsigned decimal format */
H.J. Ludd0130b2012-04-16 12:16:45 +0200527#if defined(LINUX_MIPSN32) || defined(X32)
528# if 0 /* unused so far */
529# define RVAL_LDECIMAL 004 /* long decimal format */
530# define RVAL_LHEX 005 /* long hex format */
531# define RVAL_LOCTAL 006 /* long octal format */
532# endif
533# define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
534#endif
Zubin Mithra64aa1b12014-06-04 08:30:41 +0530535#define RVAL_FD 010 /* file descriptor */
536#define RVAL_MASK 017 /* mask for these values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000537
Zubin Mithra64aa1b12014-06-04 08:30:41 +0530538#define RVAL_STR 020 /* Print `auxstr' field after return val */
539#define RVAL_NONE 040 /* Print nothing */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000540
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000541#define TRACE_FILE 001 /* Trace file-related syscalls. */
542#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
543#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
544#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
545#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
Roland McGrath2fe7b132005-07-05 03:25:35 +0000546#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
Namhyung Kim96792962012-10-24 11:41:57 +0900547#define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
548#define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
Masatake YAMATO1d78d222014-04-16 15:33:11 +0900549#define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */
550#define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */
Dmitry V. Levin3b499ca2015-01-10 22:01:35 +0300551#define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000552
Dmitry V. Levin80f7db12014-12-13 21:49:01 +0000553#if defined(ARM) || defined(AARCH64) \
554 || defined(I386) || defined(X32) || defined(X86_64) \
555 || defined(BFIN) \
556 || defined(M68K) \
557 || defined(MICROBLAZE) \
558 || defined(S390) \
559 || defined(SH) || defined(SH64) \
560 || defined(SPARC) || defined(SPARC64) \
561 /**/
562# define NEED_UID16_PARSERS 1
563#else
564# define NEED_UID16_PARSERS 0
565#endif
566
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000567typedef enum {
568 CFLAG_NONE = 0,
569 CFLAG_ONLY_STATS,
570 CFLAG_BOTH
571} cflag_t;
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000572extern cflag_t cflag;
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100573extern bool debug_flag;
574extern bool Tflag;
Anton Blancharda34dead2013-07-12 12:22:06 +0200575extern bool iflag;
Mark Hillse53bf232014-05-28 17:52:40 +0100576extern bool count_wallclock;
Daniel P. Berrange01997cf2013-05-13 11:30:55 +0100577extern unsigned int qflag;
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100578extern bool not_failing_only;
Dmitry V. Levin45e7b182014-08-08 23:38:26 +0000579extern unsigned int show_fd_path;
Denys Vlasenko2a3d2752013-05-14 16:07:46 +0200580extern bool hide_log_until_execve;
Denys Vlasenko38cfe7c2013-03-05 16:01:53 +0100581/* are we filtering traces based on paths? */
582extern const char **paths_selected;
583#define tracing_paths (paths_selected != NULL)
Denys Vlasenko8d4ca0c2013-02-06 13:18:42 +0100584extern bool need_fork_exec_workarounds;
Denys Vlasenkoeec8d5d2013-02-14 03:29:48 +0100585extern unsigned xflag;
586extern unsigned followfork;
Luca Clementi327064b2013-07-23 00:11:35 -0700587#ifdef USE_LIBUNWIND
588/* if this is true do the stack trace for every system call */
589extern bool stack_trace_enabled;
590#endif
Denys Vlasenkoeec8d5d2013-02-14 03:29:48 +0100591extern unsigned ptrace_setoptions;
592extern unsigned max_strlen;
593extern unsigned os_release;
594#undef KERNEL_VERSION
595#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100596
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000597enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
598
Denys Vlasenko75422762011-05-27 14:36:01 +0200599void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
600void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
601void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
602void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
Denys Vlasenko1d46ba52011-08-31 14:00:02 +0200603void die_out_of_memory(void) __attribute__ ((noreturn));
Denys Vlasenko75422762011-05-27 14:36:01 +0200604
Denys Vlasenko76da8312013-07-16 12:18:59 +0200605#if USE_CUSTOM_PRINTF
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200606/*
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200607 * See comment in vsprintf.c for allowed formats.
608 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200609 */
610int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
611#else
612# define strace_vfprintf vfprintf
613#endif
614
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000615extern void set_sortby(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100616extern void set_overhead(int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000617extern void qualify(const char *);
Denys Vlasenko5a2483b2013-07-01 12:49:14 +0200618extern void print_pc(struct tcb *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100619extern int trace_syscall(struct tcb *);
Dmitry V. Levinac5133d2014-05-29 18:10:00 +0000620extern void count_syscall(struct tcb *, const struct timeval *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100621extern void call_summary(FILE *);
622
Denys Vlasenkoce7d9532013-02-05 16:36:13 +0100623#if defined(AVR32) \
624 || defined(I386) \
625 || defined(X86_64) || defined(X32) \
626 || defined(AARCH64) \
627 || defined(ARM) \
Chris Metcalfaf8dc6b2013-02-05 13:02:42 -0500628 || defined(SPARC) || defined(SPARC64) \
Christian Svensson492f81f2013-02-14 13:26:27 +0100629 || defined(TILE) \
James Hogan5f999a82013-02-22 14:44:10 +0000630 || defined(OR1K) \
Anton Blanchardce6e33b2013-06-26 15:53:33 +0200631 || defined(METAG) \
Vineet Gupta7daacbb2013-08-16 12:47:06 +0530632 || defined(ARC) \
Anton Blanchardce6e33b2013-06-26 15:53:33 +0200633 || defined(POWERPC)
Denys Vlasenkoce7d9532013-02-05 16:36:13 +0100634extern long get_regs_error;
635# define clear_regs() (get_regs_error = -1)
636extern void get_regs(pid_t pid);
637#else
638# define get_regs_error 0
639# define clear_regs() ((void)0)
640# define get_regs(pid) ((void)0)
641#endif
Dmitry V. Levin97e59962015-01-14 08:05:45 +0000642extern int umoven(struct tcb *, long, unsigned int, char *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100643#define umove(pid, addr, objp) \
644 umoven((pid), (addr), sizeof(*(objp)), (char *) (objp))
Dmitry V. Levin97e59962015-01-14 08:05:45 +0000645extern int umovestr(struct tcb *, long, unsigned int, char *);
Denys Vlasenko752e5a02013-06-28 14:35:47 +0200646extern int upeek(int pid, long, long *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100647#if defined(SPARC) || defined(SPARC64) || defined(IA64) || defined(SH)
648extern long getrval2(struct tcb *);
649#endif
650/*
651 * On Linux, "setbpt" is a misnomer: we don't set a breakpoint
652 * (IOW: no poking in user's text segment),
653 * instead we change fork/vfork/clone into clone(CLONE_PTRACE).
654 * On newer kernels, we use PTRACE_O_TRACECLONE/TRACE[V]FORK instead.
655 */
656extern int setbpt(struct tcb *);
657extern int clearbpt(struct tcb *);
658
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000659extern const char *signame(const int);
Denys Vlasenko7239dbc2013-03-05 15:46:34 +0100660extern void pathtrace_select(const char *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100661extern int pathtrace_match(struct tcb *);
Denys Vlasenko61ad0a42013-03-06 18:24:34 +0100662extern int getfdpath(struct tcb *, int, char *, unsigned);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100663
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000664extern const char *xlookup(const struct xlat *, const unsigned int);
Dmitry V. Levin4176d532014-09-21 22:42:45 +0000665extern const char *xlat_search(const struct xlat *, const size_t, const unsigned int);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100666
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000667extern int string_to_uint(const char *str);
Denys Vlasenkob5d43b82012-04-28 14:58:35 +0200668extern int string_quote(const char *, char *, long, int);
Denys Vlasenkob338f2d2013-11-09 20:40:31 +0100669extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000670
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100671/* a refers to the lower numbered u_arg,
672 * b refers to the higher numbered u_arg
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100673 */
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100674#if HAVE_LITTLE_ENDIAN_LONG_LONG
675# define LONG_LONG(a,b) \
676 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
677#else
678# define LONG_LONG(a,b) \
679 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100680#endif
Dmitry V. Levin1ea64732015-01-10 00:08:58 +0000681extern int getllval(struct tcb *, unsigned long long *, int);
Dmitry V. Levin3c49b022014-08-07 00:07:28 +0000682extern int printllval(struct tcb *, const char *, int);
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100683
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000684extern void printxval(const struct xlat *, const unsigned int, const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100685extern int printargs(struct tcb *);
Denys Vlasenko72879c62012-02-27 14:18:02 +0100686extern int printargs_lu(struct tcb *);
687extern int printargs_ld(struct tcb *);
Denys Vlasenko4924dbd2011-08-19 18:06:46 +0200688extern void addflags(const struct xlat *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100689extern int printflags(const struct xlat *, int, const char *);
690extern const char *sprintflags(const char *, const struct xlat *, int);
Dmitry V. Levin9514ac72014-12-06 03:53:16 +0000691extern const char *sprintmode(int);
Dmitry V. Levinb1a01b82014-12-06 03:53:16 +0000692extern const char *sprinttime(time_t);
Masatake YAMATO02f9f6b2014-10-15 22:11:43 +0900693extern void dumpiov_in_msghdr(struct tcb *, long);
Masatake YAMATOa807dce2014-11-07 01:23:26 +0900694extern void dumpiov_in_mmsghdr(struct tcb *, long);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100695extern void dumpiov(struct tcb *, int, long);
696extern void dumpstr(struct tcb *, long, int);
Denys Vlasenkob5d43b82012-04-28 14:58:35 +0200697extern void printstr(struct tcb *, long, long);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000698extern void printnum(struct tcb *, long, const char *);
699extern void printnum_int(struct tcb *, long, const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100700extern void printpath(struct tcb *, long);
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000701extern void printpathn(struct tcb *, long, unsigned int);
Denys Vlasenkoa1d541e2012-01-20 11:04:04 +0100702#define TIMESPEC_TEXT_BUFSIZE (sizeof(long)*3 * 2 + sizeof("{%u, %u}"))
703#define TIMEVAL_TEXT_BUFSIZE TIMESPEC_TEXT_BUFSIZE
Andreas Schwabe5355de2009-10-27 16:56:43 +0100704extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100705#define printtv(tcp, addr) \
706 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
707#define printtv_special(tcp, addr) \
708 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
Denys Vlasenkoa1d541e2012-01-20 11:04:04 +0100709extern char *sprinttv(char *, struct tcb *, long, enum bitness_t, int special);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100710extern void print_timespec(struct tcb *, long);
711extern void sprint_timespec(char *, struct tcb *, long);
John Hughes58265892001-10-18 15:13:53 +0000712#ifdef HAVE_SIGINFO_T
Andreas Schwabe5355de2009-10-27 16:56:43 +0100713extern void printsiginfo(siginfo_t *, int);
Denys Vlasenkod4d3ede2013-02-13 16:31:32 +0100714extern void printsiginfo_at(struct tcb *tcp, long addr);
John Hughes58265892001-10-18 15:13:53 +0000715#endif
Dmitry V. Levin31382132011-03-04 05:08:02 +0300716extern void printfd(struct tcb *, int);
Masatake YAMATOf605e922014-12-10 12:55:06 +0900717extern bool print_sockaddr_by_inode(const unsigned long, const char *);
Dmitry V. Levin99db95d2014-02-05 04:13:18 +0000718extern void print_dirfd(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100719extern void printsock(struct tcb *, long, int);
720extern void print_sock_optmgmt(struct tcb *, long, int);
721extern void printrusage(struct tcb *, long);
Sergei Trofimovich02a08fb2011-08-11 18:04:53 +0300722#ifdef ALPHA
723extern void printrusage32(struct tcb *, long);
724#endif
Dmitry V. Levin1da7c952014-12-13 18:24:13 +0000725extern void printuid(const char *, const unsigned int);
Denys Vlasenko5e133aa2013-07-18 17:02:21 +0200726extern void print_sigset_addr_len(struct tcb *, long, long);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100727extern void printsignal(int);
Dmitry V. Levin88849682011-06-13 22:58:44 +0000728extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
Denys Vlasenkoe0bc2222012-04-28 14:26:18 +0200729extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long);
Elliott Hughes22e34b92014-09-23 19:09:50 -0700730extern void tprint_open_modes(int);
731extern const char *sprint_open_modes(int);
Mike Frysinger0cbed352012-04-04 22:22:01 -0400732extern void print_loff_t(struct tcb *, long);
Grant Edwards8a082772011-04-07 20:25:40 +0000733
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000734extern const struct_ioctlent *ioctl_lookup(const unsigned int);
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100735extern const struct_ioctlent *ioctl_next_match(const struct_ioctlent *);
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000736extern int ioctl_decode(struct tcb *, const unsigned int, long);
737extern int block_ioctl(struct tcb *, const unsigned int, long);
738extern int loop_ioctl(struct tcb *, const unsigned int, long);
739extern int mtd_ioctl(struct tcb *, const unsigned int, long);
740extern int ptp_ioctl(struct tcb *, const unsigned int, long);
741extern int rtc_ioctl(struct tcb *, const unsigned int, long);
742extern int scsi_ioctl(struct tcb *, const unsigned int, long);
743extern int sock_ioctl(struct tcb *, const unsigned int, long);
744extern int term_ioctl(struct tcb *, const unsigned int, long);
745extern int ubi_ioctl(struct tcb *, const unsigned int, long);
746extern int v4l2_ioctl(struct tcb *, const unsigned int, long);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000747
Dmitry V. Levin447db452014-05-29 17:59:01 +0000748extern int tv_nz(const struct timeval *);
749extern int tv_cmp(const struct timeval *, const struct timeval *);
750extern double tv_float(const struct timeval *);
751extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *);
752extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *);
753extern void tv_mul(struct timeval *, const struct timeval *, int);
754extern void tv_div(struct timeval *, const struct timeval *, int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000755
Luca Clementi327064b2013-07-23 00:11:35 -0700756#ifdef USE_LIBUNWIND
Masatake YAMATO61413922014-04-16 15:33:02 +0900757extern void unwind_init(void);
758extern void unwind_tcb_init(struct tcb *tcp);
759extern void unwind_tcb_fin(struct tcb *tcp);
760extern void unwind_cache_invalidate(struct tcb* tcp);
761extern void unwind_print_stacktrace(struct tcb* tcp);
Masatake YAMATOf8e39d72014-04-16 15:33:06 +0900762extern void unwind_capture_stacktrace(struct tcb* tcp);
Luca Clementi327064b2013-07-23 00:11:35 -0700763#endif
764
Denys Vlasenko7de265d2012-03-13 11:44:31 +0100765/* Strace log generation machinery.
766 *
767 * printing_tcp: tcb which has incomplete line being printed right now.
768 * NULL if last line has been completed ('\n'-terminated).
769 * printleader(tcp) examines it, finishes incomplete line if needed,
770 * the sets it to tcp.
771 * line_ended() clears printing_tcp and resets ->curcol = 0.
772 * tcp->curcol == 0 check is also used to detect completeness
773 * of last line, since in -ff mode just checking printing_tcp for NULL
774 * is not enough.
775 *
776 * If you change this code, test log generation in both -f and -ff modes
777 * using:
778 * strace -oLOG -f[f] test/threaded_execve
779 * strace -oLOG -f[f] test/sigkill_rain
780 * strace -oLOG -f[f] -p "`pidof web_browser`"
781 */
782extern struct tcb *printing_tcp;
783extern void printleader(struct tcb *);
784extern void line_ended(void);
785extern void tabto(void);
786extern void tprintf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
787extern void tprints(const char *str);
788
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100789#if SUPPORTED_PERSONALITIES > 1
790extern void set_personality(int personality);
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100791extern unsigned current_personality;
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100792#else
793# define set_personality(personality) ((void)0)
794# define current_personality 0
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100795#endif
796
797#if SUPPORTED_PERSONALITIES == 1
798# define current_wordsize PERSONALITY0_WORDSIZE
799#else
800# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
801# define current_wordsize PERSONALITY0_WORDSIZE
802# else
803extern unsigned current_wordsize;
804# endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100805#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000806
Denys Vlasenkoe015d2d2013-02-15 14:58:52 +0100807/* In many, many places we play fast and loose and use
808 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
809 * We probably need to use widen_to_long() instead:
810 */
811#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
812# define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
813#else
814# define widen_to_long(v) ((long)(v))
815#endif
816
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100817extern const struct_sysent sysent0[];
818extern const char *const errnoent0[];
819extern const char *const signalent0[];
820extern const struct_ioctlent ioctlent0[];
821extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
822#define qual_flags (qual_vec[current_personality])
823#if SUPPORTED_PERSONALITIES > 1
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100824extern const struct_sysent *sysent;
Denys Vlasenko39fca622011-08-20 02:12:33 +0200825extern const char *const *errnoent;
Roland McGrathee36ce12004-09-04 03:53:10 +0000826extern const char *const *signalent;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100827extern const struct_ioctlent *ioctlent;
828#else
829# define sysent sysent0
830# define errnoent errnoent0
831# define signalent signalent0
832# define ioctlent ioctlent0
833#endif
834extern unsigned nsyscalls;
835extern unsigned nerrnos;
Denys Vlasenkoafc64032011-08-23 13:29:01 +0200836extern unsigned nsignals;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100837extern unsigned nioctlents;
838extern unsigned num_quals;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000839
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100840/*
841 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
842 */
Denys Vlasenko5721cdb2013-02-16 13:22:38 +0100843#define SCNO_IS_VALID(scno) \
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100844 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
845
846/* Only ensures that sysent[scno] isn't out of range */
847#define SCNO_IN_RANGE(scno) \
848 ((unsigned long)(scno) < nsyscalls)