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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
Roland McGrathe6d3a292003-01-14 09:46:18 +000033#ifdef _LARGEFILE64_SOURCE
34/* This is the macro everything checks before using foo64 names. */
35# ifndef _LFS64_LARGEFILE
36# define _LFS64_LARGEFILE 1
37# endif
38#endif
Dmitry V. Levin2690fad2013-05-07 08:03:41 +000039
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010040#ifdef MIPS
Mike Frysinger3883ab82013-05-07 10:50:20 -040041# include <sgidefs.h>
Dmitry V. Levin2690fad2013-05-07 08:03:41 +000042# if _MIPS_SIM == _MIPS_SIM_ABI64
43# define LINUX_MIPSN64
44# elif _MIPS_SIM == _MIPS_SIM_NABI32
45# define LINUX_MIPSN32
46# elif _MIPS_SIM == _MIPS_SIM_ABI32
47# define LINUX_MIPSO32
48# else
49# error Unsupported _MIPS_SIM
50# endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010051#endif
Dmitry V. Levin2690fad2013-05-07 08:03:41 +000052
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010053#include <features.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010054#ifdef HAVE_STDBOOL_H
55# include <stdbool.h>
56#endif
57#include <stdint.h>
58#include <inttypes.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010059#include <sys/types.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010060#ifdef STDC_HEADERS
61# include <stddef.h>
62#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010063#include <unistd.h>
64#include <stdlib.h>
65#include <stdio.h>
Denys Vlasenko5198ed42013-03-06 23:44:23 +010066/* Open-coding isprint(ch) et al proved more efficient than calling
67 * generalized libc interface. We don't *want* to do non-ASCII anyway.
68 */
69/* #include <ctype.h> */
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010070#include <string.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010071#include <errno.h>
72#include <signal.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010073#include <time.h>
74#include <sys/time.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010075#include <sys/syscall.h>
Roland McGrathe6d3a292003-01-14 09:46:18 +000076
Denys Vlasenko29898142012-03-15 15:02:49 +010077#ifndef HAVE_STRERROR
78const char *strerror(int);
79#endif
Denys Vlasenko29898142012-03-15 15:02:49 +010080#ifndef HAVE_STPCPY
81/* Some libc have stpcpy, some don't. Sigh...
82 * Roll our private implementation...
83 */
84#undef stpcpy
85#define stpcpy strace_stpcpy
86extern char *stpcpy(char *dst, const char *src);
87#endif
88
89#if !defined __GNUC__
90# define __attribute__(x) /*nothing*/
91#endif
92
Denys Vlasenko513e9c22012-03-21 14:39:22 +010093#ifndef offsetof
94# define offsetof(type, member) \
95 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL))
96#endif
97
Denys Vlasenko29898142012-03-15 15:02:49 +010098#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
99
Mike Frysingerd648f292013-05-01 23:35:30 -0400100/* macros */
101#ifndef MAX
102# define MAX(a, b) (((a) > (b)) ? (a) : (b))
103#endif
104#ifndef MIN
105# define MIN(a, b) (((a) < (b)) ? (a) : (b))
106#endif
107#define CLAMP(val, min, max) MIN(MAX(min, val), max)
108
Denys Vlasenkoe4cc7c52012-03-23 11:29:01 +0100109/* Glibc has an efficient macro for sigemptyset
110 * (it just does one or two assignments of 0 to internal vector of longs).
111 */
112#if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
113# define sigemptyset __sigemptyset
114#endif
115
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200116/* Configuration section */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000117#ifndef DEFAULT_STRLEN
Denys Vlasenko041b3ee2011-08-18 12:48:56 +0200118/* default maximum # of bytes printed in `printstr', change with -s switch */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100119# define DEFAULT_STRLEN 32
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000120#endif
121#ifndef DEFAULT_ACOLUMN
Denys Vlasenko329655a2012-02-25 02:42:32 +0100122# define DEFAULT_ACOLUMN 40 /* default alignment column for results */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000123#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100124/*
125 * Maximum number of args to a syscall.
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200126 *
Denys Vlasenkoaa925db2012-02-25 15:19:02 +0100127 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS!
Dmitry V. Levin2690fad2013-05-07 08:03:41 +0000128 * linux/<ARCH>/syscallent*.h:
129 * all have nargs <= 6 except mips o32 which has nargs <= 7.
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200130 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000131#ifndef MAX_ARGS
Dmitry V. Levin2690fad2013-05-07 08:03:41 +0000132# ifdef LINUX_MIPSO32
133# define MAX_ARGS 7
134# else
135# define MAX_ARGS 6
136# endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000137#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100138/* default sorting method for call profiling */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000139#ifndef DEFAULT_SORTBY
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100140# define DEFAULT_SORTBY "time"
John Hughes58265892001-10-18 15:13:53 +0000141#endif
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100142/*
143 * Experimental code using PTRACE_SEIZE can be enabled here.
Denys Vlasenko9472a272013-02-12 11:43:46 +0100144 * This needs Linux kernel 3.4.x or later to work.
145 */
146#define USE_SEIZE 1
Denys Vlasenko05f32512013-02-26 12:00:34 +0100147/* To force NOMMU build, set to 1 */
Denys Vlasenko5c9d8f42013-02-19 15:30:12 +0100148#define NOMMU_SYSTEM 0
149
Denys Vlasenko9472a272013-02-12 11:43:46 +0100150#if (defined(SPARC) || defined(SPARC64) \
Dmitry V. Levin7d5696f2013-03-18 00:19:06 +0000151 || defined(I386) || defined(X32) || defined(X86_64) \
Denys Vlasenko9472a272013-02-12 11:43:46 +0100152 || defined(ARM) || defined(AARCH64) \
153 || defined(AVR32) \
Christian Svensson492f81f2013-02-14 13:26:27 +0100154 || defined(OR1K) \
James Hogan5f999a82013-02-22 14:44:10 +0000155 || defined(METAG) \
Dmitry V. Levin7d5696f2013-03-18 00:19:06 +0000156 || defined(TILE) \
Chris Zankel8f636ed2013-03-25 10:22:07 -0700157 || defined(XTENSA) \
Denys Vlasenko9472a272013-02-12 11:43:46 +0100158 ) && defined(__GLIBC__)
Denys Vlasenko329655a2012-02-25 02:42:32 +0100159# include <sys/ptrace.h>
160#else
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000161/* Work around awkward prototype in ptrace.h. */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100162# define ptrace xptrace
163# include <sys/ptrace.h>
164# undef ptrace
165# ifdef POWERPC
166# define __KERNEL__
167# include <asm/ptrace.h>
168# undef __KERNEL__
Denys Vlasenko77770bb2011-08-26 19:25:09 +0200169# endif
Denys Vlasenko329655a2012-02-25 02:42:32 +0100170extern long ptrace(int, int, char *, long);
171#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000172
Denys Vlasenko2550d482013-02-15 21:04:28 +0100173#if defined(TILE)
174# include <asm/ptrace.h> /* struct pt_regs */
175#endif
176
Denys Vlasenko9472a272013-02-12 11:43:46 +0100177#if !HAVE_DECL_PTRACE_SETOPTIONS
178# define PTRACE_SETOPTIONS 0x4200
179#endif
180#if !HAVE_DECL_PTRACE_GETEVENTMSG
181# define PTRACE_GETEVENTMSG 0x4201
182#endif
183#if !HAVE_DECL_PTRACE_GETSIGINFO
184# define PTRACE_GETSIGINFO 0x4202
185#endif
186
187#if !HAVE_DECL_PTRACE_O_TRACESYSGOOD
188# define PTRACE_O_TRACESYSGOOD 0x00000001
189#endif
190#if !HAVE_DECL_PTRACE_O_TRACEFORK
191# define PTRACE_O_TRACEFORK 0x00000002
192#endif
193#if !HAVE_DECL_PTRACE_O_TRACEVFORK
194# define PTRACE_O_TRACEVFORK 0x00000004
195#endif
196#if !HAVE_DECL_PTRACE_O_TRACECLONE
197# define PTRACE_O_TRACECLONE 0x00000008
198#endif
199#if !HAVE_DECL_PTRACE_O_TRACEEXEC
200# define PTRACE_O_TRACEEXEC 0x00000010
201#endif
202#if !HAVE_DECL_PTRACE_O_TRACEEXIT
203# define PTRACE_O_TRACEEXIT 0x00000040
204#endif
205
206#if !HAVE_DECL_PTRACE_EVENT_FORK
207# define PTRACE_EVENT_FORK 1
208#endif
209#if !HAVE_DECL_PTRACE_EVENT_VFORK
210# define PTRACE_EVENT_VFORK 2
211#endif
212#if !HAVE_DECL_PTRACE_EVENT_CLONE
213# define PTRACE_EVENT_CLONE 3
214#endif
215#if !HAVE_DECL_PTRACE_EVENT_EXEC
216# define PTRACE_EVENT_EXEC 4
217#endif
218#if !HAVE_DECL_PTRACE_EVENT_VFORK_DONE
219# define PTRACE_EVENT_VFORK_DONE 5
220#endif
221#if !HAVE_DECL_PTRACE_EVENT_EXIT
222# define PTRACE_EVENT_EXIT 6
223#endif
224
Wichert Akkermanb859bea1999-04-18 22:50:50 +0000225#if !defined(__GLIBC__)
Denys Vlasenko329655a2012-02-25 02:42:32 +0100226# define PTRACE_PEEKUSER PTRACE_PEEKUSR
227# define PTRACE_POKEUSER PTRACE_POKEUSR
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000228#endif
Denys Vlasenko9472a272013-02-12 11:43:46 +0100229
Denys Vlasenko5c9d8f42013-02-19 15:30:12 +0100230#if USE_SEIZE
Denys Vlasenko9472a272013-02-12 11:43:46 +0100231# undef PTRACE_SEIZE
232# define PTRACE_SEIZE 0x4206
233# undef PTRACE_INTERRUPT
234# define PTRACE_INTERRUPT 0x4207
235# undef PTRACE_LISTEN
236# define PTRACE_LISTEN 0x4208
237# undef PTRACE_EVENT_STOP
238# define PTRACE_EVENT_STOP 128
239#endif
240
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000241#ifdef ALPHA
Denys Vlasenko329655a2012-02-25 02:42:32 +0100242# define REG_R0 0
243# define REG_A0 16
244# define REG_A3 19
245# define REG_FP 30
246# define REG_PC 64
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000247#endif /* ALPHA */
Wichert Akkermanf90da011999-10-31 21:15:38 +0000248#ifdef MIPS
Denys Vlasenko329655a2012-02-25 02:42:32 +0100249# define REG_V0 2
250# define REG_A0 4
251# define REG_A3 7
252# define REG_SP 29
253# define REG_EPC 64
Wichert Akkermanf90da011999-10-31 21:15:38 +0000254#endif /* MIPS */
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000255#ifdef HPPA
Denys Vlasenko329655a2012-02-25 02:42:32 +0100256# define PT_GR20 (20*4)
257# define PT_GR26 (26*4)
258# define PT_GR28 (28*4)
259# define PT_IAOQ0 (106*4)
260# define PT_IAOQ1 (107*4)
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000261#endif /* HPPA */
Roland McGrathf5a47772003-06-26 22:40:42 +0000262#ifdef SH64
263 /* SH64 Linux - this code assumes the following kernel API for system calls:
Roland McGrathe1e584b2003-06-02 19:18:58 +0000264 PC Offset 0
265 System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
266 where n = no. of parameters.
267 Other regs Offset 24+
268
269 On entry: R2-7 = parameters 1-6 (as many as necessary)
270 On return: R9 = result. */
271
272 /* Offset for peeks of registers */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100273# define REG_OFFSET (24)
274# define REG_GENERAL(x) (8*(x)+REG_OFFSET)
275# define REG_PC (0*8)
276# define REG_SYSCALL (2*8)
Roland McGrathf5a47772003-06-26 22:40:42 +0000277#endif /* SH64 */
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000278#ifdef AARCH64
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000279struct arm_pt_regs {
Denys Vlasenko28ac68f2013-02-08 12:38:51 +0100280 int uregs[18];
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000281};
Denys Vlasenko28ac68f2013-02-08 12:38:51 +0100282# define ARM_cpsr uregs[16]
283# define ARM_pc uregs[15]
284# define ARM_lr uregs[14]
285# define ARM_sp uregs[13]
286# define ARM_ip uregs[12]
287# define ARM_fp uregs[11]
288# define ARM_r10 uregs[10]
289# define ARM_r9 uregs[9]
290# define ARM_r8 uregs[8]
291# define ARM_r7 uregs[7]
292# define ARM_r6 uregs[6]
293# define ARM_r5 uregs[5]
294# define ARM_r4 uregs[4]
295# define ARM_r3 uregs[3]
296# define ARM_r2 uregs[2]
297# define ARM_r1 uregs[1]
298# define ARM_r0 uregs[0]
299# define ARM_ORIG_r0 uregs[17]
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000300#endif /* AARCH64 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000301
Denys Vlasenko9472a272013-02-12 11:43:46 +0100302#if defined(SPARC) || defined(SPARC64)
Mike Frysinger8566c502009-10-12 11:05:14 -0400303/* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
304 * by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100305# define U_REG_G1 0
306# define U_REG_O0 7
307# define U_REG_O1 8
308# define PERSONALITY0_WORDSIZE 4
309# define PERSONALITY1_WORDSIZE 4
Denys Vlasenko329655a2012-02-25 02:42:32 +0100310# if defined(SPARC64)
311# include <asm/psrcompat.h>
312# define SUPPORTED_PERSONALITIES 3
313# define PERSONALITY2_WORDSIZE 8
314# else
315# include <asm/psr.h>
316# define SUPPORTED_PERSONALITIES 2
317# endif /* SPARC64 */
Denys Vlasenko9472a272013-02-12 11:43:46 +0100318#endif /* SPARC[64] */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000319
Michal Ludvig0e035502002-09-23 15:41:01 +0000320#ifdef X86_64
H.J. Lu35be5812012-04-16 13:00:01 +0200321# define SUPPORTED_PERSONALITIES 3
Denys Vlasenko329655a2012-02-25 02:42:32 +0100322# define PERSONALITY0_WORDSIZE 8
323# define PERSONALITY1_WORDSIZE 4
H.J. Lu35be5812012-04-16 13:00:01 +0200324# define PERSONALITY2_WORDSIZE 4
Roland McGrathee9d4352002-12-18 04:16:10 +0000325#endif
326
H.J. Lu085e4282012-04-17 11:05:04 -0700327#ifdef X32
H.J. Lu085e4282012-04-17 11:05:04 -0700328# define SUPPORTED_PERSONALITIES 2
329# define PERSONALITY0_WORDSIZE 4
330# define PERSONALITY1_WORDSIZE 4
331#endif
332
Roland McGrath56703312008-05-20 01:35:55 +0000333#ifdef ARM
Denys Vlasenko7270de52013-02-21 15:46:34 +0100334/* one personality */
Roland McGrath56703312008-05-20 01:35:55 +0000335#endif
336
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000337#ifdef AARCH64
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000338/* The existing ARM personality, then AArch64 */
339# define SUPPORTED_PERSONALITIES 2
340# define PERSONALITY0_WORDSIZE 4
341# define PERSONALITY1_WORDSIZE 8
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000342# define DEFAULT_PERSONALITY 1
343#endif
344
Andreas Schwabd69fa492010-07-12 21:39:57 +0200345#ifdef POWERPC64
Denys Vlasenko329655a2012-02-25 02:42:32 +0100346# define SUPPORTED_PERSONALITIES 2
347# define PERSONALITY0_WORDSIZE 8
348# define PERSONALITY1_WORDSIZE 4
Andreas Schwabd69fa492010-07-12 21:39:57 +0200349#endif
350
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100351#ifdef TILE
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100352# define SUPPORTED_PERSONALITIES 2
353# define PERSONALITY0_WORDSIZE 8
354# define PERSONALITY1_WORDSIZE 4
355# ifdef __tilepro__
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100356# define DEFAULT_PERSONALITY 1
357# endif
358#endif
359
Denys Vlasenko9472a272013-02-12 11:43:46 +0100360#ifndef SUPPORTED_PERSONALITIES
361# define SUPPORTED_PERSONALITIES 1
362#endif
363#ifndef DEFAULT_PERSONALITY
364# define DEFAULT_PERSONALITY 0
365#endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100366#ifndef PERSONALITY0_WORDSIZE
Denys Vlasenkoc52826c2012-05-15 14:28:56 +0200367# define PERSONALITY0_WORDSIZE (int)(sizeof(long))
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100368#endif
369
Denys Vlasenko329655a2012-02-25 02:42:32 +0100370#if defined(I386)
Denys Vlasenko2550d482013-02-15 21:04:28 +0100371extern struct user_regs_struct i386_regs;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100372#elif defined(IA64)
Denys Vlasenko29898142012-03-15 15:02:49 +0100373extern long ia32;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100374#elif defined(SPARC) || defined(SPARC64)
Denys Vlasenko48e4c1b2013-02-16 08:23:40 +0100375extern struct pt_regs sparc_regs;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100376#elif defined(ARM)
Denys Vlasenko401374e2013-02-06 18:24:39 +0100377extern struct pt_regs arm_regs;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100378#elif defined(TILE)
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100379extern struct pt_regs tile_regs;
380#endif
Denys Vlasenkob11322f2012-01-10 16:40:35 +0100381
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100382typedef struct sysent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100383 unsigned nargs;
384 int sys_flags;
385 int (*sys_func)();
386 const char *sys_name;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100387} struct_sysent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100388
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100389typedef struct ioctlent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100390 const char *doth;
391 const char *symbol;
392 unsigned long code;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100393} struct_ioctlent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100394
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000395/* Trace Control Block */
396struct tcb {
Denys Vlasenkod9ec1412011-08-20 01:39:05 +0200397 int flags; /* See below for TCB_ values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000398 int pid; /* Process Id of this entry */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100399 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200400 int u_error; /* Error code */
401 long scno; /* System call number */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000402 long u_arg[MAX_ARGS]; /* System call arguments */
H.J. Lu35be5812012-04-16 13:00:01 +0200403#if defined(LINUX_MIPSN32) || defined(X32)
Denys Vlasenko9472a272013-02-12 11:43:46 +0100404 long long ext_arg[MAX_ARGS];
H.J. Ludd0130b2012-04-16 12:16:45 +0200405 long long u_lrval; /* long long return value */
406#endif
Denys Vlasenko9472a272013-02-12 11:43:46 +0100407 long u_rval; /* Return value */
Dmitry V. Levina5a839a2011-12-23 00:50:49 +0000408#if SUPPORTED_PERSONALITIES > 1
409 int currpers; /* Personality at the time of scno update */
410#endif
Andreas Schwabccdff482009-10-27 16:27:13 +0100411 int curcol; /* Output column for this process */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200412 FILE *outf; /* Output file for this process */
Wichert Akkerman43a74822000-06-27 17:33:32 +0000413 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100414 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000415 struct timeval stime; /* System time usage as of last process wait */
416 struct timeval dtime; /* Delta for system time usage */
417 struct timeval etime; /* Syscall entry time */
Denys Vlasenkoa61a72e2012-03-17 12:41:27 +0100418 /* Support for tracing forked processes: */
419 long inst[2]; /* Saved clone args (badly named) */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000420};
421
422/* TCB flags */
Denys Vlasenkof88837a2011-09-05 14:05:46 +0200423#define TCB_INUSE 00001 /* This table entry is in use */
Denys Vlasenko68269aa2012-03-15 13:02:31 +0100424/* We have attached to this process, but did not see it stopping yet */
Denys Vlasenkof88837a2011-09-05 14:05:46 +0200425#define TCB_STARTUP 00002
426#define TCB_IGNORE_ONE_SIGSTOP 00004 /* Next SIGSTOP is to be ignored */
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200427/*
428 * Are we in system call entry or in syscall exit?
429 *
430 * This bit is set after all syscall entry processing is done.
431 * Therefore, this bit will be set when next ptrace stop occurs,
432 * which should be syscall exit stop. Other stops which are possible
433 * directly after syscall entry (death, ptrace event stop)
434 * are simpler and handled without calling trace_syscall(), therefore
435 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
436 * are limited to trace(), this condition is never observed in trace_syscall()
437 * and below.
438 * The bit is cleared after all syscall exit processing is done.
439 * User-generated SIGTRAPs and post-execve SIGTRAP make it necessary
440 * to be very careful and NOT set TCB_INSYSCALL bit when they are encountered.
441 * TCB_WAITEXECVE bit is used for this purpose (see below).
442 *
443 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
444 */
Denys Vlasenkof88837a2011-09-05 14:05:46 +0200445#define TCB_INSYSCALL 00010
Denys Vlasenko75fe85c2012-03-09 15:15:24 +0100446#define TCB_ATTACHED 00020 /* It is attached already */
447/* Are we PROG from "strace PROG [ARGS]" invocation? */
Denys Vlasenko513e9c22012-03-21 14:39:22 +0100448#define TCB_STRACE_CHILD 0040
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000449#define TCB_BPTSET 00100 /* "Breakpoint" set after fork(2) */
Denys Vlasenko513e9c22012-03-21 14:39:22 +0100450#define TCB_REPRINT 00200 /* We should reprint this syscall on exit */
451#define TCB_FILTERED 00400 /* This system call has been filtered out */
Roland McGratheb9e2e82009-06-02 16:49:22 -0700452/* x86 does not need TCB_WAITEXECVE.
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100453 * It can detect post-execve SIGTRAP by looking at eax/rax.
454 * See "not a syscall entry (eax = %ld)\n" message.
455 *
456 * Note! On new kernels (about 2.5.46+), we use PTRACE_O_TRACEEXEC, which
457 * suppresses post-execve SIGTRAP. If you are adding a new arch which is
458 * only supported by newer kernels, you most likely don't need to define
459 * TCB_WAITEXECVE!
Denys Vlasenkobc161ec2009-01-02 18:02:45 +0000460 */
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100461#if defined(ALPHA) \
462 || defined(SPARC) || defined(SPARC64) \
463 || defined(POWERPC) \
464 || defined(IA64) \
465 || defined(HPPA) \
466 || defined(SH) || defined(SH64) \
467 || defined(S390) || defined(S390X) \
Denys Vlasenkobf357fc2013-02-12 13:06:51 +0100468 || defined(ARM) \
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100469 || defined(MIPS)
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200470/* This tracee has entered into execve syscall. Expect post-execve SIGTRAP
471 * to happen. (When it is detected, tracee is continued and this bit is cleared.)
472 */
Denys Vlasenko513e9c22012-03-21 14:39:22 +0100473# define TCB_WAITEXECVE 01000
Denys Vlasenko329655a2012-02-25 02:42:32 +0100474#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000475
476/* qualifier flags */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100477#define QUAL_TRACE 0x001 /* this system call should be traced */
478#define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
479#define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
480#define QUAL_RAW 0x008 /* print all args in hex for this syscall */
481#define QUAL_SIGNAL 0x010 /* report events with this signal */
Denys Vlasenkoc1540fe2013-02-21 16:17:08 +0100482#define QUAL_READ 0x020 /* dump data read on this file descriptor */
483#define QUAL_WRITE 0x040 /* dump data written to this file descriptor */
Denys Vlasenkoa585c9d2013-02-21 16:15:43 +0100484typedef uint8_t qualbits_t;
Denys Vlasenkoc1540fe2013-02-21 16:17:08 +0100485#define UNDEFINED_SCNO 0x100 /* Used only in tcp->qual_flg */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100486
487#define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000488
489#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
490#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
491#define syserror(tcp) ((tcp)->u_error != 0)
Denys Vlasenko40d63b92013-02-22 13:23:38 +0100492#define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
493#define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
Grant Edwards8a082772011-04-07 20:25:40 +0000494#define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000495
496struct xlat {
497 int val;
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000498 const char *str;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000499};
500
Denys Vlasenkof535b542009-01-13 18:30:55 +0000501extern const struct xlat open_mode_flags[];
502extern const struct xlat addrfams[];
503extern const struct xlat struct_user_offsets[];
504extern const struct xlat open_access_modes[];
Denys Vlasenko86738a22013-02-17 14:31:55 +0100505extern const struct xlat whence_codes[];
Denys Vlasenkof535b542009-01-13 18:30:55 +0000506
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000507/* Format of syscall return values */
508#define RVAL_DECIMAL 000 /* decimal format */
509#define RVAL_HEX 001 /* hex format */
510#define RVAL_OCTAL 002 /* octal format */
511#define RVAL_UDECIMAL 003 /* unsigned decimal format */
H.J. Ludd0130b2012-04-16 12:16:45 +0200512#if defined(LINUX_MIPSN32) || defined(X32)
513# if 0 /* unused so far */
514# define RVAL_LDECIMAL 004 /* long decimal format */
515# define RVAL_LHEX 005 /* long hex format */
516# define RVAL_LOCTAL 006 /* long octal format */
517# endif
518# define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
519#endif
520#define RVAL_MASK 007 /* mask for these values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000521
522#define RVAL_STR 010 /* Print `auxstr' field after return val */
523#define RVAL_NONE 020 /* Print nothing */
524
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000525#define TRACE_FILE 001 /* Trace file-related syscalls. */
526#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
527#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
528#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
529#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
Roland McGrath2fe7b132005-07-05 03:25:35 +0000530#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
Namhyung Kim96792962012-10-24 11:41:57 +0900531#define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
532#define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000533
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000534typedef enum {
535 CFLAG_NONE = 0,
536 CFLAG_ONLY_STATS,
537 CFLAG_BOTH
538} cflag_t;
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000539extern cflag_t cflag;
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100540extern bool debug_flag;
541extern bool Tflag;
542extern bool qflag;
543extern bool not_failing_only;
544extern bool show_fd_path;
Denys Vlasenko38cfe7c2013-03-05 16:01:53 +0100545/* are we filtering traces based on paths? */
546extern const char **paths_selected;
547#define tracing_paths (paths_selected != NULL)
Denys Vlasenko8d4ca0c2013-02-06 13:18:42 +0100548extern bool need_fork_exec_workarounds;
Denys Vlasenkoeec8d5d2013-02-14 03:29:48 +0100549extern unsigned xflag;
550extern unsigned followfork;
551extern unsigned ptrace_setoptions;
552extern unsigned max_strlen;
553extern unsigned os_release;
554#undef KERNEL_VERSION
555#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100556
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000557enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
558
Denys Vlasenko75422762011-05-27 14:36:01 +0200559void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
560void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
561void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
562void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
Denys Vlasenko1d46ba52011-08-31 14:00:02 +0200563void die_out_of_memory(void) __attribute__ ((noreturn));
Denys Vlasenko75422762011-05-27 14:36:01 +0200564
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200565#ifdef USE_CUSTOM_PRINTF
566/*
567 * Speed-optimized vfprintf implementation.
568 * See comment in vsprintf.c for allowed formats.
569 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
570 *
571 * It results in strace using about 5% less CPU in user space
572 * (compared to glibc version).
573 * But strace spends a lot of time in kernel space,
574 * so overall it does not appear to be a significant win.
575 * Thus disabled by default.
576 */
577int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
578#else
579# define strace_vfprintf vfprintf
580#endif
581
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000582extern void set_sortby(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100583extern void set_overhead(int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000584extern void qualify(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100585extern int trace_syscall(struct tcb *);
Denys Vlasenkoc95a88f2011-08-21 17:47:40 +0200586extern void count_syscall(struct tcb *, struct timeval *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100587extern void call_summary(FILE *);
588
Denys Vlasenkoce7d9532013-02-05 16:36:13 +0100589#if defined(AVR32) \
590 || defined(I386) \
591 || defined(X86_64) || defined(X32) \
592 || defined(AARCH64) \
593 || defined(ARM) \
Chris Metcalfaf8dc6b2013-02-05 13:02:42 -0500594 || defined(SPARC) || defined(SPARC64) \
Christian Svensson492f81f2013-02-14 13:26:27 +0100595 || defined(TILE) \
James Hogan5f999a82013-02-22 14:44:10 +0000596 || defined(OR1K) \
597 || defined(METAG)
Denys Vlasenkoce7d9532013-02-05 16:36:13 +0100598extern long get_regs_error;
599# define clear_regs() (get_regs_error = -1)
600extern void get_regs(pid_t pid);
601#else
602# define get_regs_error 0
603# define clear_regs() ((void)0)
604# define get_regs(pid) ((void)0)
605#endif
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100606extern int umoven(struct tcb *, long, int, char *);
607#define umove(pid, addr, objp) \
608 umoven((pid), (addr), sizeof(*(objp)), (char *) (objp))
609extern int umovestr(struct tcb *, long, int, char *);
610extern int upeek(struct tcb *, long, long *);
611#if defined(SPARC) || defined(SPARC64) || defined(IA64) || defined(SH)
612extern long getrval2(struct tcb *);
613#endif
614/*
615 * On Linux, "setbpt" is a misnomer: we don't set a breakpoint
616 * (IOW: no poking in user's text segment),
617 * instead we change fork/vfork/clone into clone(CLONE_PTRACE).
618 * On newer kernels, we use PTRACE_O_TRACECLONE/TRACE[V]FORK instead.
619 */
620extern int setbpt(struct tcb *);
621extern int clearbpt(struct tcb *);
622
623extern const char *signame(int);
624extern int is_restart_error(struct tcb *);
Denys Vlasenko7239dbc2013-03-05 15:46:34 +0100625extern void pathtrace_select(const char *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100626extern int pathtrace_match(struct tcb *);
Denys Vlasenko61ad0a42013-03-06 18:24:34 +0100627extern int getfdpath(struct tcb *, int, char *, unsigned);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100628
629extern const char *xlookup(const struct xlat *, int);
630
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000631extern int string_to_uint(const char *str);
Denys Vlasenkob5d43b82012-04-28 14:58:35 +0200632extern int string_quote(const char *, char *, long, int);
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000633
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100634/* a refers to the lower numbered u_arg,
635 * b refers to the higher numbered u_arg
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100636 */
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100637#if HAVE_LITTLE_ENDIAN_LONG_LONG
638# define LONG_LONG(a,b) \
639 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
640#else
641# define LONG_LONG(a,b) \
642 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100643#endif
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100644extern int printllval(struct tcb *, const char *, int);
645
Andreas Schwabe5355de2009-10-27 16:56:43 +0100646extern void printxval(const struct xlat *, int, const char *);
647extern int printargs(struct tcb *);
Denys Vlasenko72879c62012-02-27 14:18:02 +0100648extern int printargs_lu(struct tcb *);
649extern int printargs_ld(struct tcb *);
Denys Vlasenko4924dbd2011-08-19 18:06:46 +0200650extern void addflags(const struct xlat *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100651extern int printflags(const struct xlat *, int, const char *);
652extern const char *sprintflags(const char *, const struct xlat *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100653extern void dumpiov(struct tcb *, int, long);
654extern void dumpstr(struct tcb *, long, int);
Denys Vlasenkob5d43b82012-04-28 14:58:35 +0200655extern void printstr(struct tcb *, long, long);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000656extern void printnum(struct tcb *, long, const char *);
657extern void printnum_int(struct tcb *, long, const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100658extern void printpath(struct tcb *, long);
659extern void printpathn(struct tcb *, long, int);
Denys Vlasenkoa1d541e2012-01-20 11:04:04 +0100660#define TIMESPEC_TEXT_BUFSIZE (sizeof(long)*3 * 2 + sizeof("{%u, %u}"))
661#define TIMEVAL_TEXT_BUFSIZE TIMESPEC_TEXT_BUFSIZE
Andreas Schwabe5355de2009-10-27 16:56:43 +0100662extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100663#define printtv(tcp, addr) \
664 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
665#define printtv_special(tcp, addr) \
666 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
Denys Vlasenkoa1d541e2012-01-20 11:04:04 +0100667extern char *sprinttv(char *, struct tcb *, long, enum bitness_t, int special);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100668extern void print_timespec(struct tcb *, long);
669extern void sprint_timespec(char *, struct tcb *, long);
John Hughes58265892001-10-18 15:13:53 +0000670#ifdef HAVE_SIGINFO_T
Andreas Schwabe5355de2009-10-27 16:56:43 +0100671extern void printsiginfo(siginfo_t *, int);
Denys Vlasenkod4d3ede2013-02-13 16:31:32 +0100672extern void printsiginfo_at(struct tcb *tcp, long addr);
John Hughes58265892001-10-18 15:13:53 +0000673#endif
Dmitry V. Levin31382132011-03-04 05:08:02 +0300674extern void printfd(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100675extern void printsock(struct tcb *, long, int);
676extern void print_sock_optmgmt(struct tcb *, long, int);
677extern void printrusage(struct tcb *, long);
Sergei Trofimovich02a08fb2011-08-11 18:04:53 +0300678#ifdef ALPHA
679extern void printrusage32(struct tcb *, long);
680#endif
Andreas Schwabe5355de2009-10-27 16:56:43 +0100681extern void printuid(const char *, unsigned long);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100682extern void printcall(struct tcb *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100683extern void print_sigset(struct tcb *, long, int);
684extern void printsignal(int);
Dmitry V. Levin88849682011-06-13 22:58:44 +0000685extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
Denys Vlasenkoe0bc2222012-04-28 14:26:18 +0200686extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100687extern void tprint_open_modes(mode_t);
688extern const char *sprint_open_modes(mode_t);
Mike Frysinger0cbed352012-04-04 22:22:01 -0400689extern void print_loff_t(struct tcb *, long);
Grant Edwards8a082772011-04-07 20:25:40 +0000690
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100691extern const struct_ioctlent *ioctl_lookup(long);
692extern const struct_ioctlent *ioctl_next_match(const struct_ioctlent *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100693extern int ioctl_decode(struct tcb *, long, long);
694extern int term_ioctl(struct tcb *, long, long);
695extern int sock_ioctl(struct tcb *, long, long);
696extern int proc_ioctl(struct tcb *, int, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100697extern int rtc_ioctl(struct tcb *, long, long);
698extern int scsi_ioctl(struct tcb *, long, long);
Dmitry V. Levin4ef6db42011-01-15 20:15:31 +0000699extern int block_ioctl(struct tcb *, long, long);
Mike Frysinger0cbed352012-04-04 22:22:01 -0400700extern int mtd_ioctl(struct tcb *, long, long);
Mike Frysingerd648f292013-05-01 23:35:30 -0400701extern int ubi_ioctl(struct tcb *, long, long);
Mike Frysingerebee04c2012-04-17 22:19:31 -0400702extern int loop_ioctl(struct tcb *, long, long);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000703
Andreas Schwabe5355de2009-10-27 16:56:43 +0100704extern int tv_nz(struct timeval *);
705extern int tv_cmp(struct timeval *, struct timeval *);
706extern double tv_float(struct timeval *);
707extern void tv_add(struct timeval *, struct timeval *, struct timeval *);
708extern void tv_sub(struct timeval *, struct timeval *, struct timeval *);
709extern void tv_mul(struct timeval *, struct timeval *, int);
710extern void tv_div(struct timeval *, struct timeval *, int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000711
Denys Vlasenko7de265d2012-03-13 11:44:31 +0100712/* Strace log generation machinery.
713 *
714 * printing_tcp: tcb which has incomplete line being printed right now.
715 * NULL if last line has been completed ('\n'-terminated).
716 * printleader(tcp) examines it, finishes incomplete line if needed,
717 * the sets it to tcp.
718 * line_ended() clears printing_tcp and resets ->curcol = 0.
719 * tcp->curcol == 0 check is also used to detect completeness
720 * of last line, since in -ff mode just checking printing_tcp for NULL
721 * is not enough.
722 *
723 * If you change this code, test log generation in both -f and -ff modes
724 * using:
725 * strace -oLOG -f[f] test/threaded_execve
726 * strace -oLOG -f[f] test/sigkill_rain
727 * strace -oLOG -f[f] -p "`pidof web_browser`"
728 */
729extern struct tcb *printing_tcp;
730extern void printleader(struct tcb *);
731extern void line_ended(void);
732extern void tabto(void);
733extern void tprintf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
734extern void tprints(const char *str);
735
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100736#if SUPPORTED_PERSONALITIES > 1
737extern void set_personality(int personality);
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100738extern unsigned current_personality;
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100739#else
740# define set_personality(personality) ((void)0)
741# define current_personality 0
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100742#endif
743
744#if SUPPORTED_PERSONALITIES == 1
745# define current_wordsize PERSONALITY0_WORDSIZE
746#else
747# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
748# define current_wordsize PERSONALITY0_WORDSIZE
749# else
750extern unsigned current_wordsize;
751# endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100752#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000753
Denys Vlasenkoe015d2d2013-02-15 14:58:52 +0100754/* In many, many places we play fast and loose and use
755 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
756 * We probably need to use widen_to_long() instead:
757 */
758#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
759# define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
760#else
761# define widen_to_long(v) ((long)(v))
762#endif
763
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100764extern const struct_sysent sysent0[];
765extern const char *const errnoent0[];
766extern const char *const signalent0[];
767extern const struct_ioctlent ioctlent0[];
768extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
769#define qual_flags (qual_vec[current_personality])
770#if SUPPORTED_PERSONALITIES > 1
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100771extern const struct_sysent *sysent;
Denys Vlasenko39fca622011-08-20 02:12:33 +0200772extern const char *const *errnoent;
Roland McGrathee36ce12004-09-04 03:53:10 +0000773extern const char *const *signalent;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100774extern const struct_ioctlent *ioctlent;
775#else
776# define sysent sysent0
777# define errnoent errnoent0
778# define signalent signalent0
779# define ioctlent ioctlent0
780#endif
781extern unsigned nsyscalls;
782extern unsigned nerrnos;
Denys Vlasenkoafc64032011-08-23 13:29:01 +0200783extern unsigned nsignals;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100784extern unsigned nioctlents;
785extern unsigned num_quals;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000786
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100787/*
788 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
789 */
Denys Vlasenko5721cdb2013-02-16 13:22:38 +0100790#define SCNO_IS_VALID(scno) \
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100791 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
792
793/* Only ensures that sysent[scno] isn't out of range */
794#define SCNO_IN_RANGE(scno) \
795 ((unsigned long)(scno) < nsyscalls)