blob: e7e1ebb3717e36a41f61da49cf8c58ab2163d6bd [file] [log] [blame]
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.
28 *
29 * $Id$
30 */
31
Roland McGrath795edb12005-02-02 04:44:57 +000032#ifdef HAVE_CONFIG_H
Denys Vlasenko329655a2012-02-25 02:42:32 +010033# include "config.h"
Roland McGrath795edb12005-02-02 04:44:57 +000034#endif
35
Roland McGrath542c2c62008-05-20 01:11:56 +000036#ifdef MIPS
Denys Vlasenko329655a2012-02-25 02:42:32 +010037# include <sgidefs.h>
Roland McGrath542c2c62008-05-20 01:11:56 +000038#endif
39
Wichert Akkermanb859bea1999-04-18 22:50:50 +000040#include <features.h>
Wichert Akkermanb859bea1999-04-18 22:50:50 +000041
Roland McGrathe6d3a292003-01-14 09:46:18 +000042#ifdef _LARGEFILE64_SOURCE
43/* This is the macro everything checks before using foo64 names. */
44# ifndef _LFS64_LARGEFILE
45# define _LFS64_LARGEFILE 1
46# endif
47#endif
48
Denys Vlasenkod9560c12011-08-19 17:41:28 +020049/* Configuration section */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000050#ifndef MAX_QUALS
Denys Vlasenko329655a2012-02-25 02:42:32 +010051# if defined(MIPS)
52# define MAX_QUALS 7000 /* maximum number of syscalls, signals, etc. */
53# else
54# define MAX_QUALS 2048 /* maximum number of syscalls, signals, etc. */
55# endif
Wichert Akkerman5ae21ea2000-05-01 01:53:59 +000056#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000057#ifndef DEFAULT_STRLEN
Denys Vlasenko041b3ee2011-08-18 12:48:56 +020058/* default maximum # of bytes printed in `printstr', change with -s switch */
Denys Vlasenko329655a2012-02-25 02:42:32 +010059# define DEFAULT_STRLEN 32
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000060#endif
61#ifndef DEFAULT_ACOLUMN
Denys Vlasenko329655a2012-02-25 02:42:32 +010062# define DEFAULT_ACOLUMN 40 /* default alignment column for results */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000063#endif
Denys Vlasenkod9560c12011-08-19 17:41:28 +020064
65/* Maximum number of args to a syscall.
66 *
67 * Make sure that all entries in all syscallent.h files
68 * have nargs <= MAX_ARGS!
Denys Vlasenko44142a72011-08-23 18:04:25 +020069 * linux/<ARCH>/syscallent.h: all have nargs <= 6.
Denys Vlasenkod9560c12011-08-19 17:41:28 +020070 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000071#ifndef MAX_ARGS
Denys Vlasenko329655a2012-02-25 02:42:32 +010072# define MAX_ARGS 6
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000073#endif
Denys Vlasenkod9560c12011-08-19 17:41:28 +020074
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000075#ifndef DEFAULT_SORTBY
Denys Vlasenko329655a2012-02-25 02:42:32 +010076# define DEFAULT_SORTBY "time" /* default sorting method for call profiling */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000077#endif
78
79#include <sys/types.h>
80#include <unistd.h>
81#include <stdlib.h>
82#include <stdio.h>
83#include <ctype.h>
84#include <string.h>
Wichert Akkerman8c7122c2001-02-16 19:59:55 +000085#include <time.h>
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000086#include <sys/time.h>
87#include <errno.h>
88
Roland McGrath639658b2008-08-01 01:06:31 +000089#ifdef HAVE_STDBOOL_H
Denys Vlasenko329655a2012-02-25 02:42:32 +010090# include <stdbool.h>
Roland McGrath639658b2008-08-01 01:06:31 +000091#endif
92
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000093#ifdef STDC_HEADERS
Denys Vlasenko329655a2012-02-25 02:42:32 +010094# include <stddef.h>
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000095#endif /* STDC_HEADERS */
96
John Hughes58265892001-10-18 15:13:53 +000097#ifdef HAVE_SIGINFO_T
Denys Vlasenko329655a2012-02-25 02:42:32 +010098# include <signal.h>
John Hughes58265892001-10-18 15:13:53 +000099#endif
100
Denys Vlasenko329655a2012-02-25 02:42:32 +0100101#if defined(SPARC) || defined(SPARC64)
102# define LINUXSPARC
103#endif
104#if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI32
105# define LINUX_MIPSO32
106#endif
107#if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_NABI32
108# define LINUX_MIPSN32
109# define LINUX_MIPS64
110#endif
111#if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI64
112# define LINUX_MIPSN64
113# define LINUX_MIPS64
114#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000115
Denys Vlasenko329655a2012-02-25 02:42:32 +0100116#if (defined(LINUXSPARC) || defined(X86_64) || defined(ARM) || defined(AVR32)) && defined(__GLIBC__)
117# include <sys/ptrace.h>
118#else
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000119/* Work around awkward prototype in ptrace.h. */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100120# define ptrace xptrace
121# include <sys/ptrace.h>
122# undef ptrace
123# ifdef POWERPC
124# define __KERNEL__
125# include <asm/ptrace.h>
126# undef __KERNEL__
Denys Vlasenko77770bb2011-08-26 19:25:09 +0200127# endif
Denys Vlasenko329655a2012-02-25 02:42:32 +0100128extern long ptrace(int, int, char *, long);
129#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000130
Wichert Akkermanb859bea1999-04-18 22:50:50 +0000131#if !defined(__GLIBC__)
Denys Vlasenko329655a2012-02-25 02:42:32 +0100132# define PTRACE_PEEKUSER PTRACE_PEEKUSR
133# define PTRACE_POKEUSER PTRACE_POKEUSR
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000134#endif
Denys Vlasenkoeb0e3e82011-08-30 18:53:49 +0200135#if defined(X86_64) || defined(I386)
136/* For struct pt_regs. x86 strace uses PTRACE_GETREGS.
137 * PTRACE_GETREGS returns registers in the layout of this struct.
138 */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100139# include <asm/ptrace.h>
Denys Vlasenkoeb0e3e82011-08-30 18:53:49 +0200140#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000141#ifdef ALPHA
Denys Vlasenko329655a2012-02-25 02:42:32 +0100142# define REG_R0 0
143# define REG_A0 16
144# define REG_A3 19
145# define REG_FP 30
146# define REG_PC 64
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000147#endif /* ALPHA */
Wichert Akkermanf90da011999-10-31 21:15:38 +0000148#ifdef MIPS
Denys Vlasenko329655a2012-02-25 02:42:32 +0100149# define REG_V0 2
150# define REG_A0 4
151# define REG_A3 7
152# define REG_SP 29
153# define REG_EPC 64
Wichert Akkermanf90da011999-10-31 21:15:38 +0000154#endif /* MIPS */
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000155#ifdef HPPA
Denys Vlasenko329655a2012-02-25 02:42:32 +0100156# define PT_GR20 (20*4)
157# define PT_GR26 (26*4)
158# define PT_GR28 (28*4)
159# define PT_IAOQ0 (106*4)
160# define PT_IAOQ1 (107*4)
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000161#endif /* HPPA */
Roland McGrathf5a47772003-06-26 22:40:42 +0000162#ifdef SH64
163 /* SH64 Linux - this code assumes the following kernel API for system calls:
Roland McGrathe1e584b2003-06-02 19:18:58 +0000164 PC Offset 0
165 System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
166 where n = no. of parameters.
167 Other regs Offset 24+
168
169 On entry: R2-7 = parameters 1-6 (as many as necessary)
170 On return: R9 = result. */
171
172 /* Offset for peeks of registers */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100173# define REG_OFFSET (24)
174# define REG_GENERAL(x) (8*(x)+REG_OFFSET)
175# define REG_PC (0*8)
176# define REG_SYSCALL (2*8)
Roland McGrathf5a47772003-06-26 22:40:42 +0000177#endif /* SH64 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000178
179#define SUPPORTED_PERSONALITIES 1
180#define DEFAULT_PERSONALITY 0
181
182#ifdef LINUXSPARC
Mike Frysinger8566c502009-10-12 11:05:14 -0400183/* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
184 * by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100185# define U_REG_G1 0
186# define U_REG_O0 7
187# define U_REG_O1 8
188# define PERSONALITY0_WORDSIZE 4
189# define PERSONALITY1_WORDSIZE 4
190# undef SUPPORTED_PERSONALITIES
191# if defined(SPARC64)
192# include <asm/psrcompat.h>
193# define SUPPORTED_PERSONALITIES 3
194# define PERSONALITY2_WORDSIZE 8
195# else
196# include <asm/psr.h>
197# define SUPPORTED_PERSONALITIES 2
198# endif /* SPARC64 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000199#endif /* LINUXSPARC */
200
Michal Ludvig0e035502002-09-23 15:41:01 +0000201#ifdef X86_64
Denys Vlasenko329655a2012-02-25 02:42:32 +0100202# undef SUPPORTED_PERSONALITIES
203# define SUPPORTED_PERSONALITIES 2
204# define PERSONALITY0_WORDSIZE 8
205# define PERSONALITY1_WORDSIZE 4
Roland McGrathee9d4352002-12-18 04:16:10 +0000206#endif
207
Roland McGrath56703312008-05-20 01:35:55 +0000208#ifdef ARM
Denys Vlasenko329655a2012-02-25 02:42:32 +0100209# undef SUPPORTED_PERSONALITIES
210# define SUPPORTED_PERSONALITIES 2
211# define PERSONALITY0_WORDSIZE 4
212# define PERSONALITY1_WORDSIZE 4
Roland McGrath56703312008-05-20 01:35:55 +0000213#endif
214
Andreas Schwabd69fa492010-07-12 21:39:57 +0200215#ifdef POWERPC64
Denys Vlasenko329655a2012-02-25 02:42:32 +0100216# undef SUPPORTED_PERSONALITIES
217# define SUPPORTED_PERSONALITIES 2
218# define PERSONALITY0_WORDSIZE 8
219# define PERSONALITY1_WORDSIZE 4
Andreas Schwabd69fa492010-07-12 21:39:57 +0200220#endif
221
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000222
Denys Vlasenko329655a2012-02-25 02:42:32 +0100223#if !HAVE_DECL_PTRACE_SETOPTIONS
224# define PTRACE_SETOPTIONS 0x4200
225#endif
226#if !HAVE_DECL_PTRACE_GETEVENTMSG
227# define PTRACE_GETEVENTMSG 0x4201
228#endif
229#if !HAVE_DECL_PTRACE_GETSIGINFO
230# define PTRACE_GETSIGINFO 0x4202
231#endif
Dmitry V. Levin1b0df402011-07-19 22:13:11 +0000232
Denys Vlasenko329655a2012-02-25 02:42:32 +0100233#if !HAVE_DECL_PTRACE_O_TRACESYSGOOD
234# define PTRACE_O_TRACESYSGOOD 0x00000001
235#endif
236#if !HAVE_DECL_PTRACE_O_TRACEFORK
237# define PTRACE_O_TRACEFORK 0x00000002
238#endif
239#if !HAVE_DECL_PTRACE_O_TRACEVFORK
240# define PTRACE_O_TRACEVFORK 0x00000004
241#endif
242#if !HAVE_DECL_PTRACE_O_TRACECLONE
243# define PTRACE_O_TRACECLONE 0x00000008
244#endif
245#if !HAVE_DECL_PTRACE_O_TRACEEXEC
246# define PTRACE_O_TRACEEXEC 0x00000010
247#endif
248#if !HAVE_DECL_PTRACE_O_TRACEEXIT
249# define PTRACE_O_TRACEEXIT 0x00000040
250#endif
Wang Chaob13c0de2010-11-12 17:25:19 +0800251
Denys Vlasenko329655a2012-02-25 02:42:32 +0100252#if !HAVE_DECL_PTRACE_EVENT_FORK
253# define PTRACE_EVENT_FORK 1
254#endif
255#if !HAVE_DECL_PTRACE_EVENT_VFORK
256# define PTRACE_EVENT_VFORK 2
257#endif
258#if !HAVE_DECL_PTRACE_EVENT_CLONE
259# define PTRACE_EVENT_CLONE 3
260#endif
261#if !HAVE_DECL_PTRACE_EVENT_EXEC
262# define PTRACE_EVENT_EXEC 4
263#endif
264#if !HAVE_DECL_PTRACE_EVENT_VFORK_DONE
265# define PTRACE_EVENT_VFORK_DONE 5
266#endif
267#if !HAVE_DECL_PTRACE_EVENT_EXIT
268# define PTRACE_EVENT_EXIT 6
269#endif
Denys Vlasenko31fa8a22012-01-29 02:01:44 +0100270
271/* Experimental code using PTRACE_SEIZE can be enabled here: */
272//# define USE_SEIZE 1
273
Denys Vlasenko329655a2012-02-25 02:42:32 +0100274#ifdef USE_SEIZE
275# undef PTRACE_SEIZE
276# define PTRACE_SEIZE 0x4206
277# undef PTRACE_INTERRUPT
278# define PTRACE_INTERRUPT 0x4207
279# undef PTRACE_LISTEN
280# define PTRACE_LISTEN 0x4208
281# undef PTRACE_SEIZE_DEVEL
282# define PTRACE_SEIZE_DEVEL 0x80000000
283# undef PTRACE_EVENT_STOP
284# define PTRACE_EVENT_STOP 7
285# define PTRACE_EVENT_STOP1 128
286#endif
Denys Vlasenko31fa8a22012-01-29 02:01:44 +0100287
Wang Chaob13c0de2010-11-12 17:25:19 +0800288
Denys Vlasenko75422762011-05-27 14:36:01 +0200289#if !defined __GNUC__
290# define __attribute__(x) /*nothing*/
291#endif
292
Dmitry V. Levinfcda7a52011-06-13 21:58:43 +0000293#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
294
Denys Vlasenko329655a2012-02-25 02:42:32 +0100295#if defined(I386)
Dmitry V. Levin024cad92012-01-17 18:37:13 +0000296extern struct pt_regs i386_regs;
Denys Vlasenko329655a2012-02-25 02:42:32 +0100297#endif
Denys Vlasenkob11322f2012-01-10 16:40:35 +0100298
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000299/* Trace Control Block */
300struct tcb {
Denys Vlasenkod9ec1412011-08-20 01:39:05 +0200301 int flags; /* See below for TCB_ values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000302 int pid; /* Process Id of this entry */
Denys Vlasenko8dc0c8c2011-08-20 13:44:56 +0200303 int u_nargs; /* System call argument count */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200304 int u_error; /* Error code */
305 long scno; /* System call number */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000306 long u_arg[MAX_ARGS]; /* System call arguments */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100307#if defined(LINUX_MIPSN32)
Roland McGrath542c2c62008-05-20 01:11:56 +0000308 long long ext_arg[MAX_ARGS]; /* System call arguments */
309#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000310 long u_rval; /* (first) return value */
Wichert Akkerman16a03d22000-08-10 02:14:04 +0000311#ifdef HAVE_LONG_LONG
312 long long u_lrval; /* long long return value */
313#endif
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200314 int ptrace_errno;
Dmitry V. Levina5a839a2011-12-23 00:50:49 +0000315#if SUPPORTED_PERSONALITIES > 1
316 int currpers; /* Personality at the time of scno update */
317#endif
Andreas Schwabccdff482009-10-27 16:27:13 +0100318 int curcol; /* Output column for this process */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200319 FILE *outf; /* Output file for this process */
Wichert Akkerman43a74822000-06-27 17:33:32 +0000320 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000321 struct timeval stime; /* System time usage as of last process wait */
322 struct timeval dtime; /* Delta for system time usage */
323 struct timeval etime; /* Syscall entry time */
324 /* Support for tracing forked processes */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000325 long baddr; /* `Breakpoint' address */
326 long inst[2]; /* Instructions on above */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000327};
328
329/* TCB flags */
Denys Vlasenkof88837a2011-09-05 14:05:46 +0200330#define TCB_INUSE 00001 /* This table entry is in use */
331/* We have attached to this process, but did not see it stopping yet.
332 * (If this bit is not set, we either didn't attach yet,
333 * or we did attach to it, already saw it stopping at least once,
334 * did some init work on it and cleared this bit. TODO: maybe it makes sense
335 * to split these two states?)
336 */
337#define TCB_STARTUP 00002
338#define TCB_IGNORE_ONE_SIGSTOP 00004 /* Next SIGSTOP is to be ignored */
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200339/*
340 * Are we in system call entry or in syscall exit?
341 *
342 * This bit is set after all syscall entry processing is done.
343 * Therefore, this bit will be set when next ptrace stop occurs,
344 * which should be syscall exit stop. Other stops which are possible
345 * directly after syscall entry (death, ptrace event stop)
346 * are simpler and handled without calling trace_syscall(), therefore
347 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
348 * are limited to trace(), this condition is never observed in trace_syscall()
349 * and below.
350 * The bit is cleared after all syscall exit processing is done.
351 * User-generated SIGTRAPs and post-execve SIGTRAP make it necessary
352 * to be very careful and NOT set TCB_INSYSCALL bit when they are encountered.
353 * TCB_WAITEXECVE bit is used for this purpose (see below).
354 *
355 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
356 */
Denys Vlasenkof88837a2011-09-05 14:05:46 +0200357#define TCB_INSYSCALL 00010
358#define TCB_ATTACHED 00020 /* Process is not our own child */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000359#define TCB_BPTSET 00100 /* "Breakpoint" set after fork(2) */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000360#define TCB_REPRINT 01000 /* We should reprint this syscall on exit */
Grant Edwards8a082772011-04-07 20:25:40 +0000361#define TCB_FILTERED 02000 /* This system call has been filtered out */
Roland McGratheb9e2e82009-06-02 16:49:22 -0700362/* x86 does not need TCB_WAITEXECVE.
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200363 * It can detect SIGTRAP by looking at eax/rax.
Denys Vlasenko8b4454c2011-08-25 10:40:14 +0200364 * See "not a syscall entry (eax = %ld)\n" message
365 * in syscall_fixup_on_sysenter().
Denys Vlasenkobc161ec2009-01-02 18:02:45 +0000366 */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100367#if defined(ALPHA) || defined(AVR32) || defined(SPARC) || defined(SPARC64) \
Denys Vlasenkoc71016e2009-03-06 00:33:24 +0000368 || defined(POWERPC) || defined(IA64) || defined(HPPA) \
369 || defined(SH) || defined(SH64) || defined(S390) || defined(S390X) \
Chris Metcalfc8c66982009-12-28 10:00:15 -0500370 || defined(ARM) || defined(MIPS) || defined(BFIN) || defined(TILE)
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200371/* This tracee has entered into execve syscall. Expect post-execve SIGTRAP
372 * to happen. (When it is detected, tracee is continued and this bit is cleared.)
373 */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100374# define TCB_WAITEXECVE 04000
375#endif
376#include <sys/syscall.h>
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000377
378/* qualifier flags */
379#define QUAL_TRACE 0001 /* this system call should be traced */
380#define QUAL_ABBREV 0002 /* abbreviate the structures of this syscall */
381#define QUAL_VERBOSE 0004 /* decode the structures of this syscall */
382#define QUAL_RAW 0010 /* print all args in hex for this syscall */
383#define QUAL_SIGNAL 0020 /* report events with this signal */
384#define QUAL_FAULT 0040 /* report events with this fault */
385#define QUAL_READ 0100 /* dump data read on this file descriptor */
386#define QUAL_WRITE 0200 /* dump data written to this file descriptor */
387
388#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
389#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
390#define syserror(tcp) ((tcp)->u_error != 0)
391#define verbose(tcp) (qual_flags[(tcp)->scno] & QUAL_VERBOSE)
392#define abbrev(tcp) (qual_flags[(tcp)->scno] & QUAL_ABBREV)
Grant Edwards8a082772011-04-07 20:25:40 +0000393#define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000394
395struct xlat {
396 int val;
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000397 const char *str;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000398};
399
Denys Vlasenkof535b542009-01-13 18:30:55 +0000400extern const struct xlat open_mode_flags[];
401extern const struct xlat addrfams[];
402extern const struct xlat struct_user_offsets[];
403extern const struct xlat open_access_modes[];
404
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000405/* Format of syscall return values */
406#define RVAL_DECIMAL 000 /* decimal format */
407#define RVAL_HEX 001 /* hex format */
408#define RVAL_OCTAL 002 /* octal format */
409#define RVAL_UDECIMAL 003 /* unsigned decimal format */
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000410#define RVAL_LDECIMAL 004 /* long decimal format */
411#define RVAL_LHEX 005 /* long hex format */
412#define RVAL_LOCTAL 006 /* long octal format */
413#define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000414#define RVAL_MASK 007 /* mask for these values */
415
416#define RVAL_STR 010 /* Print `auxstr' field after return val */
417#define RVAL_NONE 020 /* Print nothing */
418
419#ifndef offsetof
Denys Vlasenko329655a2012-02-25 02:42:32 +0100420# define offsetof(type, member) (((char *) &(((type *) NULL)->member)) - \
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000421 ((char *) (type *) NULL))
Denys Vlasenko329655a2012-02-25 02:42:32 +0100422#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000423
424/* get offset of member within a user struct */
425#define uoff(member) offsetof(struct user, member)
426
427#define TRACE_FILE 001 /* Trace file-related syscalls. */
428#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
429#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
430#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
431#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
Roland McGrath2fe7b132005-07-05 03:25:35 +0000432#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
Dmitry V. Levin7655fa02011-02-05 01:07:08 +0000433#define SYSCALL_NEVER_FAILS 0100 /* Syscall is always successful. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000434
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000435typedef enum {
436 CFLAG_NONE = 0,
437 CFLAG_ONLY_STATS,
438 CFLAG_BOTH
439} cflag_t;
440
Roland McGrath138c6a32006-01-12 09:50:49 +0000441extern int *qual_flags;
Roland McGrath41c48222008-07-18 00:25:10 +0000442extern int debug, followfork;
Denys Vlasenkof44cce42011-06-21 14:34:10 +0200443extern unsigned int ptrace_setoptions;
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000444extern int dtime, xflag, qflag;
445extern cflag_t cflag;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000446extern int max_strlen;
Denys Vlasenko000b6012012-01-28 01:25:03 +0100447/*
448 * Which tcb has incomplete line being printed right now?
449 * NULL if last line has been completed ('\n'-terminated).
450 * printleader(tcp) sets it. Clearing is open-coded.
451 */
452extern struct tcb *printing_tcp;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000453
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000454enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
455
Denys Vlasenko75422762011-05-27 14:36:01 +0200456void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
457void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
458void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
459void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
Denys Vlasenko1d46ba52011-08-31 14:00:02 +0200460void die_out_of_memory(void) __attribute__ ((noreturn));
Denys Vlasenko75422762011-05-27 14:36:01 +0200461
Denys Vlasenko5c774b22011-08-20 01:50:09 +0200462extern void set_personality(int personality);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100463extern const char *xlookup(const struct xlat *, int);
464extern struct tcb *alloc_tcb(int, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100465extern void droptcb(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000466
Dmitry V. Levin10de62b2006-12-13 21:45:31 +0000467#define alloctcb(pid) alloc_tcb((pid), 1)
468
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000469extern void set_sortby(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100470extern void set_overhead(int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000471extern void qualify(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100472extern long do_ptrace(int request, struct tcb *tcp, void *addr, void *data);
473extern int ptrace_restart(int request, struct tcb *tcp, int sig);
474extern int trace_syscall(struct tcb *);
Denys Vlasenkoc95a88f2011-08-21 17:47:40 +0200475extern void count_syscall(struct tcb *, struct timeval *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100476extern void printxval(const struct xlat *, int, const char *);
477extern int printargs(struct tcb *);
Denys Vlasenko4924dbd2011-08-19 18:06:46 +0200478extern void addflags(const struct xlat *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100479extern int printflags(const struct xlat *, int, const char *);
480extern const char *sprintflags(const char *, const struct xlat *, int);
481extern int umoven(struct tcb *, long, int, char *);
482extern int umovestr(struct tcb *, long, int, char *);
483extern int upeek(struct tcb *, long, long *);
484extern void dumpiov(struct tcb *, int, long);
485extern void dumpstr(struct tcb *, long, int);
486extern void printstr(struct tcb *, long, int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000487extern void printnum(struct tcb *, long, const char *);
488extern void printnum_int(struct tcb *, long, const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100489extern void printpath(struct tcb *, long);
490extern void printpathn(struct tcb *, long, int);
Denys Vlasenkoa1d541e2012-01-20 11:04:04 +0100491#define TIMESPEC_TEXT_BUFSIZE (sizeof(long)*3 * 2 + sizeof("{%u, %u}"))
492#define TIMEVAL_TEXT_BUFSIZE TIMESPEC_TEXT_BUFSIZE
Andreas Schwabe5355de2009-10-27 16:56:43 +0100493extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
Denys Vlasenkoa1d541e2012-01-20 11:04:04 +0100494extern char *sprinttv(char *, struct tcb *, long, enum bitness_t, int special);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100495extern void print_timespec(struct tcb *, long);
496extern void sprint_timespec(char *, struct tcb *, long);
John Hughes58265892001-10-18 15:13:53 +0000497#ifdef HAVE_SIGINFO_T
Andreas Schwabe5355de2009-10-27 16:56:43 +0100498extern void printsiginfo(siginfo_t *, int);
John Hughes58265892001-10-18 15:13:53 +0000499#endif
Grant Edwards8a082772011-04-07 20:25:40 +0000500extern const char *getfdpath(struct tcb *, int);
Dmitry V. Levin31382132011-03-04 05:08:02 +0300501extern void printfd(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100502extern void printsock(struct tcb *, long, int);
503extern void print_sock_optmgmt(struct tcb *, long, int);
504extern void printrusage(struct tcb *, long);
Sergei Trofimovich02a08fb2011-08-11 18:04:53 +0300505#ifdef ALPHA
506extern void printrusage32(struct tcb *, long);
507#endif
Andreas Schwabe5355de2009-10-27 16:56:43 +0100508extern void printuid(const char *, unsigned long);
509extern int clearbpt(struct tcb *);
Denys Vlasenko91ecfac2011-06-23 22:05:50 +0200510/*
511 * On Linux, "setbpt" is a misnomer: we don't set a breakpoint
512 * (IOW: no poking in user's text segment),
513 * instead we change fork/vfork/clone into clone(CLONE_PTRACE).
514 * On newer kernels, we use PTRACE_O_TRACECLONE/TRACE[V]FORK instead.
515 */
Andreas Schwabe5355de2009-10-27 16:56:43 +0100516extern int setbpt(struct tcb *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100517extern void printcall(struct tcb *);
518extern const char *signame(int);
519extern void print_sigset(struct tcb *, long, int);
520extern void printsignal(int);
521extern void printleader(struct tcb *);
Denys Vlasenko102ec492011-08-25 01:27:59 +0200522extern void tabto(void);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100523extern void call_summary(FILE *);
Dmitry V. Levin88849682011-06-13 22:58:44 +0000524extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100525extern void tprint_open_modes(mode_t);
526extern const char *sprint_open_modes(mode_t);
527extern int is_restart_error(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000528
Grant Edwards8a082772011-04-07 20:25:40 +0000529extern int pathtrace_select(const char *);
530extern int pathtrace_match(struct tcb *);
531
Andreas Schwabe5355de2009-10-27 16:56:43 +0100532extern int change_syscall(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100533extern int internal_fork(struct tcb *);
534extern int internal_exec(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000535
Andreas Schwabe5355de2009-10-27 16:56:43 +0100536extern const struct ioctlent *ioctl_lookup(long);
537extern const struct ioctlent *ioctl_next_match(const struct ioctlent *);
538extern int ioctl_decode(struct tcb *, long, long);
539extern int term_ioctl(struct tcb *, long, long);
540extern int sock_ioctl(struct tcb *, long, long);
541extern int proc_ioctl(struct tcb *, int, int);
542extern int stream_ioctl(struct tcb *, int, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100543extern int rtc_ioctl(struct tcb *, long, long);
544extern int scsi_ioctl(struct tcb *, long, long);
Dmitry V. Levin4ef6db42011-01-15 20:15:31 +0000545extern int block_ioctl(struct tcb *, long, long);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000546
Andreas Schwabe5355de2009-10-27 16:56:43 +0100547extern int tv_nz(struct timeval *);
548extern int tv_cmp(struct timeval *, struct timeval *);
549extern double tv_float(struct timeval *);
550extern void tv_add(struct timeval *, struct timeval *, struct timeval *);
551extern void tv_sub(struct timeval *, struct timeval *, struct timeval *);
552extern void tv_mul(struct timeval *, struct timeval *, int);
553extern void tv_div(struct timeval *, struct timeval *, int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000554
Denys Vlasenko0a295bc2011-09-01 16:31:48 +0200555#if !defined HAVE_STPCPY
Denys Vlasenko52845572011-08-31 12:07:38 +0200556/* Some libc have stpcpy, some don't. Sigh...
557 * Roll our private implementation...
558 */
559#undef stpcpy
560#define stpcpy strace_stpcpy
561extern char *stpcpy(char *dst, const char *src);
Denys Vlasenko0a295bc2011-09-01 16:31:48 +0200562#endif
Denys Vlasenko52845572011-08-31 12:07:38 +0200563
Denys Vlasenko84703742012-02-25 02:38:52 +0100564#if defined(SPARC) || defined(SPARC64) || defined(IA64) || defined(SH)
Andreas Schwabe5355de2009-10-27 16:56:43 +0100565extern long getrval2(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000566#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000567
568#define umove(pid, addr, objp) \
569 umoven((pid), (addr), sizeof *(objp), (char *) (objp))
570
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000571#define printtv(tcp, addr) \
Roland McGrath6afc5652007-07-24 01:57:11 +0000572 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
573#define printtv_special(tcp, addr) \
574 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000575
Denys Vlasenko75422762011-05-27 14:36:01 +0200576extern void tprintf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
Denys Vlasenko5940e652011-09-01 09:55:05 +0200577extern void tprints(const char *str);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000578
579#ifndef HAVE_STRERROR
Andreas Schwabe5355de2009-10-27 16:56:43 +0100580const char *strerror(int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000581#endif
582#ifndef HAVE_STRSIGNAL
Andreas Schwabe5355de2009-10-27 16:56:43 +0100583const char *strsignal(int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000584#endif
585
586extern int current_personality;
Dmitry V. Levin4ebb4e32006-12-13 17:08:08 +0000587extern const int personality_wordsize[];
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000588
589struct sysent {
Denys Vlasenkoac1ce772011-08-23 13:24:17 +0200590 unsigned nargs;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000591 int sys_flags;
592 int (*sys_func)();
Roland McGrathee36ce12004-09-04 03:53:10 +0000593 const char *sys_name;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000594};
595
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000596struct ioctlent {
Roland McGrathee36ce12004-09-04 03:53:10 +0000597 const char *doth;
598 const char *symbol;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000599 unsigned long code;
600};
601
Denys Vlasenko39fca622011-08-20 02:12:33 +0200602extern const struct sysent *sysent;
Denys Vlasenkoafc64032011-08-23 13:29:01 +0200603extern unsigned nsyscalls;
Denys Vlasenko39fca622011-08-20 02:12:33 +0200604extern const char *const *errnoent;
Denys Vlasenkoafc64032011-08-23 13:29:01 +0200605extern unsigned nerrnos;
Roland McGrathee36ce12004-09-04 03:53:10 +0000606extern const struct ioctlent *ioctlent;
Denys Vlasenkoafc64032011-08-23 13:29:01 +0200607extern unsigned nioctlents;
Roland McGrathee36ce12004-09-04 03:53:10 +0000608extern const char *const *signalent;
Denys Vlasenkoafc64032011-08-23 13:29:01 +0200609extern unsigned nsignals;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000610
H.J. Lue752bed2012-02-03 10:19:55 -0800611#define SCNO_IN_RANGE(scno) \
612 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
Denys Vlasenkocb6f0562011-08-25 01:13:43 +0200613
John Hughes0c79e012001-03-08 14:40:06 +0000614#if HAVE_LONG_LONG
John Hughes5a826b82001-03-07 13:21:24 +0000615
John Hughesbdf48f52001-03-06 15:08:09 +0000616/* _l refers to the lower numbered u_arg,
617 * _h refers to the higher numbered u_arg
618 */
John Hughes5a826b82001-03-07 13:21:24 +0000619
John Hughesb8a85a42001-03-28 08:05:27 +0000620#if HAVE_LITTLE_ENDIAN_LONG_LONG
John Hughes0c79e012001-03-08 14:40:06 +0000621#define LONG_LONG(_l,_h) \
Wichert Akkerman7ab47b62002-03-31 19:00:02 +0000622 ((long long)((unsigned long long)(unsigned)(_l) | ((unsigned long long)(_h)<<32)))
John Hughesbdf48f52001-03-06 15:08:09 +0000623#else
John Hughes0c79e012001-03-08 14:40:06 +0000624#define LONG_LONG(_l,_h) \
Wichert Akkerman7ab47b62002-03-31 19:00:02 +0000625 ((long long)((unsigned long long)(unsigned)(_h) | ((unsigned long long)(_l)<<32)))
John Hughesbdf48f52001-03-06 15:08:09 +0000626#endif
Andreas Schwabb5600fc2009-11-04 17:08:34 +0100627
628extern int printllval(struct tcb *, const char *, int);
John Hughesbdf48f52001-03-06 15:08:09 +0000629#endif
Wichert Akkerman7b3346b2001-10-09 23:47:38 +0000630
631#ifdef IA64
632extern long ia32;
633#endif
Michal Ludvig17f8fb32002-11-06 13:17:21 +0000634
635extern int not_failing_only;
Grant Edwards8a082772011-04-07 20:25:40 +0000636extern int show_fd_path;
637extern int tracing_paths;