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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.
28 *
29 * $Id$
30 */
31
Roland McGrath795edb12005-02-02 04:44:57 +000032#ifdef HAVE_CONFIG_H
33#include "config.h"
34#endif
35
Roland McGrath542c2c62008-05-20 01:11:56 +000036#ifdef MIPS
37#include <sgidefs.h>
38#endif
39
Wichert Akkermanb859bea1999-04-18 22:50:50 +000040#ifdef linux
41#include <features.h>
42#endif
43
Roland McGrathe6d3a292003-01-14 09:46:18 +000044#ifdef _LARGEFILE64_SOURCE
45/* This is the macro everything checks before using foo64 names. */
46# ifndef _LFS64_LARGEFILE
47# define _LFS64_LARGEFILE 1
48# endif
49#endif
50
Denys Vlasenkod9560c12011-08-19 17:41:28 +020051/* Configuration section */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000052#ifndef MAX_QUALS
Roland McGrath63d01462002-12-30 00:25:36 +000053#if defined(LINUX) && defined(MIPS)
Roland McGrath542c2c62008-05-20 01:11:56 +000054#define MAX_QUALS 7000 /* maximum number of syscalls, signals, etc. */
Wichert Akkermanfd89ced2000-04-13 17:06:09 +000055#else
Wichert Akkerman8b1b40c2000-02-03 21:58:30 +000056#define MAX_QUALS 2048 /* maximum number of syscalls, signals, etc. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000057#endif
Wichert Akkerman5ae21ea2000-05-01 01:53:59 +000058#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000059#ifndef DEFAULT_STRLEN
Denys Vlasenko041b3ee2011-08-18 12:48:56 +020060/* default maximum # of bytes printed in `printstr', change with -s switch */
61#define DEFAULT_STRLEN 32
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000062#endif
63#ifndef DEFAULT_ACOLUMN
64#define DEFAULT_ACOLUMN 40 /* default alignment column for results */
65#endif
Denys Vlasenkod9560c12011-08-19 17:41:28 +020066
67/* Maximum number of args to a syscall.
68 *
69 * Make sure that all entries in all syscallent.h files
70 * have nargs <= MAX_ARGS!
71 * linux/<ARCH>/syscallent.h: ia64 has many syscalls with
72 * nargs = 8, mips has two with nargs = 7 (both are printargs),
73 * all others are <= 6.
74 * freebsd/i386/syscallent.h: one syscall with nargs = 8
75 * (sys_sendfile, looks legitimate)
76 * and one with nargs = 7 (sys_mmap, maybe it should have 6?).
77 * sunos4/syscallent.h: all are <= 6.
78 * svr4/syscallent.h: all are -1.
79 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000080#ifndef MAX_ARGS
Dmitry V. Levin67874d82009-10-05 23:32:39 +000081# ifdef HPPA
Denys Vlasenkod9560c12011-08-19 17:41:28 +020082# define MAX_ARGS 6
83# elif defined X86_64 || defined I386
84# ifdef FREEBSD
85# define MAX_ARGS 8
86# else
87# define MAX_ARGS 6
88# endif
Dmitry V. Levin67874d82009-10-05 23:32:39 +000089# else
Denys Vlasenko041b3ee2011-08-18 12:48:56 +020090/* Way too big. Switch your arch to saner size after you tested that it works */
Denys Vlasenkod9560c12011-08-19 17:41:28 +020091# define MAX_ARGS 32
Dmitry V. Levin67874d82009-10-05 23:32:39 +000092# endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000093#endif
Denys Vlasenkod9560c12011-08-19 17:41:28 +020094
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000095#ifndef DEFAULT_SORTBY
96#define DEFAULT_SORTBY "time" /* default sorting method for call profiling */
97#endif
98
99#include <sys/types.h>
100#include <unistd.h>
101#include <stdlib.h>
102#include <stdio.h>
103#include <ctype.h>
104#include <string.h>
Wichert Akkerman8c7122c2001-02-16 19:59:55 +0000105#include <time.h>
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000106#include <sys/time.h>
107#include <errno.h>
108
Roland McGrath639658b2008-08-01 01:06:31 +0000109#ifdef HAVE_STDBOOL_H
110#include <stdbool.h>
111#endif
112
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000113#ifdef STDC_HEADERS
114#include <stddef.h>
115#endif /* STDC_HEADERS */
116
John Hughes58265892001-10-18 15:13:53 +0000117#ifdef HAVE_SIGINFO_T
118#include <signal.h>
119#endif
120
Wichert Akkermanf5eeabb1999-11-18 17:09:47 +0000121#if defined(LINUX)
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000122# if defined(SPARC) || defined(SPARC64)
Wichert Akkermanf5eeabb1999-11-18 17:09:47 +0000123# define LINUXSPARC
124# endif
Michal Ludvig0e035502002-09-23 15:41:01 +0000125# if defined(X86_64)
126# define LINUX_X86_64
127# endif
Roland McGrath542c2c62008-05-20 01:11:56 +0000128# if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI32
129# define LINUX_MIPSO32
130# endif
131# if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_NABI32
132# define LINUX_MIPSN32
133# define LINUX_MIPS64
134# endif
135# if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI64
136# define LINUX_MIPSN64
137# define LINUX_MIPS64
138# endif
Denys Vlasenko8ba1cd72008-12-30 17:50:46 +0000139# if defined(ARM)
140# define LINUX_ARM
141# endif
Denys Vlasenko5ae2b7c2009-02-27 20:32:52 +0000142# if defined(AVR32)
143# define LINUX_AVR32
144# endif
Roland McGrathee9d4352002-12-18 04:16:10 +0000145#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000146
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000147#if defined(SVR4) || defined(FREEBSD)
148#define USE_PROCFS
149#else
150#undef USE_PROCFS
151#endif
152
153#ifdef FREEBSD
154#ifndef I386
155#error "FreeBSD support is only for i386 arch right now."
156#endif
157#include <machine/psl.h>
158#include <machine/reg.h>
159#include <sys/syscall.h>
160#endif
161
162#ifdef USE_PROCFS
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000163#include <sys/procfs.h>
Wichert Akkermanea78f0f1999-11-29 15:34:02 +0000164#ifdef HAVE_MP_PROCFS
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000165#include <sys/uio.h>
166#endif
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000167#ifdef FREEBSD
168#include <sys/pioctl.h>
169#endif /* FREEBSD */
170#else /* !USE_PROCFS */
Denys Vlasenko5ae2b7c2009-02-27 20:32:52 +0000171#if (defined(LINUXSPARC) || defined(LINUX_X86_64) || defined(LINUX_ARM) || defined(LINUX_AVR32)) && defined(__GLIBC__)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000172#include <sys/ptrace.h>
173#else
174/* Work around awkward prototype in ptrace.h. */
175#define ptrace xptrace
176#include <sys/ptrace.h>
177#undef ptrace
178#ifdef POWERPC
179#define __KERNEL__
180#include <asm/ptrace.h>
181#undef __KERNEL__
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000182#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000183#ifdef LINUX
184extern long ptrace(int, int, char *, long);
185#else /* !LINUX */
186extern int ptrace(int, int, char *, int, ...);
187#endif /* !LINUX */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000188#endif /* !LINUXSPARC */
189#endif /* !SVR4 */
190
191#ifdef LINUX
Wichert Akkermanb859bea1999-04-18 22:50:50 +0000192#if !defined(__GLIBC__)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000193#define PTRACE_PEEKUSER PTRACE_PEEKUSR
194#define PTRACE_POKEUSER PTRACE_POKEUSR
195#endif
196#ifdef ALPHA
Wichert Akkermanf90da011999-10-31 21:15:38 +0000197# define REG_R0 0
198# define REG_A0 16
199# define REG_A3 19
200# define REG_FP 30
201# define REG_PC 64
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000202#endif /* ALPHA */
Wichert Akkermanf90da011999-10-31 21:15:38 +0000203#ifdef MIPS
204# define REG_V0 2
205# define REG_A0 4
206# define REG_A3 7
207# define REG_SP 29
208# define REG_EPC 64
209#endif /* MIPS */
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000210#ifdef HPPA
211# define PT_GR20 (20*4)
212# define PT_GR26 (26*4)
213# define PT_GR28 (28*4)
214# define PT_IAOQ0 (106*4)
215# define PT_IAOQ1 (107*4)
216#endif /* HPPA */
Roland McGrathf5a47772003-06-26 22:40:42 +0000217#ifdef SH64
218 /* SH64 Linux - this code assumes the following kernel API for system calls:
Roland McGrathe1e584b2003-06-02 19:18:58 +0000219 PC Offset 0
220 System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
221 where n = no. of parameters.
222 Other regs Offset 24+
223
224 On entry: R2-7 = parameters 1-6 (as many as necessary)
225 On return: R9 = result. */
226
227 /* Offset for peeks of registers */
228# define REG_OFFSET (24)
229# define REG_GENERAL(x) (8*(x)+REG_OFFSET)
230# define REG_PC (0*8)
231# define REG_SYSCALL (2*8)
Roland McGrathf5a47772003-06-26 22:40:42 +0000232#endif /* SH64 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000233#endif /* LINUX */
234
235#define SUPPORTED_PERSONALITIES 1
236#define DEFAULT_PERSONALITY 0
237
238#ifdef LINUXSPARC
Mike Frysinger8566c502009-10-12 11:05:14 -0400239/* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
240 * by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
241#define U_REG_G1 0
242#define U_REG_O0 7
243#define U_REG_O1 8
Roland McGrath4b2dcca2006-01-12 10:18:53 +0000244#define PERSONALITY0_WORDSIZE 4
245#define PERSONALITY1_WORDSIZE 4
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000246#undef SUPPORTED_PERSONALITIES
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000247#if defined(SPARC64)
Roland McGrath5aa04342007-09-12 01:26:26 +0000248#include <asm/psrcompat.h>
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000249#define SUPPORTED_PERSONALITIES 3
Roland McGrath4b2dcca2006-01-12 10:18:53 +0000250#define PERSONALITY2_WORDSIZE 8
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000251#else
Roland McGrath5aa04342007-09-12 01:26:26 +0000252#include <asm/psr.h>
Wichert Akkermanb859bea1999-04-18 22:50:50 +0000253#define SUPPORTED_PERSONALITIES 2
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000254#endif /* SPARC64 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000255#endif /* LINUXSPARC */
256
Michal Ludvig0e035502002-09-23 15:41:01 +0000257#ifdef X86_64
258#undef SUPPORTED_PERSONALITIES
259#define SUPPORTED_PERSONALITIES 2
Roland McGrath4b2dcca2006-01-12 10:18:53 +0000260#define PERSONALITY0_WORDSIZE 8
261#define PERSONALITY1_WORDSIZE 4
Roland McGrathee9d4352002-12-18 04:16:10 +0000262#endif
263
Roland McGrath56703312008-05-20 01:35:55 +0000264#ifdef ARM
265#undef SUPPORTED_PERSONALITIES
266#define SUPPORTED_PERSONALITIES 2
267#define PERSONALITY0_WORDSIZE 4
268#define PERSONALITY1_WORDSIZE 4
269#endif
270
Andreas Schwabd69fa492010-07-12 21:39:57 +0200271#ifdef POWERPC64
272#undef SUPPORTED_PERSONALITIES
273#define SUPPORTED_PERSONALITIES 2
274#define PERSONALITY0_WORDSIZE 8
275#define PERSONALITY1_WORDSIZE 4
276#endif
277
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000278#ifdef SVR4
Wichert Akkermanea78f0f1999-11-29 15:34:02 +0000279#ifdef HAVE_MP_PROCFS
Denys Vlasenkob63256e2011-06-07 12:13:24 +0200280extern int mp_ioctl(int f, int c, void *a, int s);
281#define IOCTL(f,c,a) mp_ioctl(f, c, a, sizeof *a)
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000282#define IOCTL_STATUS(t) \
Denys Vlasenkob63256e2011-06-07 12:13:24 +0200283 pread(t->pfd_stat, &t->status, sizeof t->status, 0)
Denys Vlasenko9015cd92011-06-24 23:07:24 +0200284#define IOCTL_WSTOP(t) \
285 (IOCTL(t->pfd, PCWSTOP, (char *)NULL) < 0 ? -1 : IOCTL_STATUS(t))
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000286#define PR_WHY pr_lwp.pr_why
287#define PR_WHAT pr_lwp.pr_what
288#define PR_REG pr_lwp.pr_context.uc_mcontext.gregs
289#define PR_FLAGS pr_lwp.pr_flags
John Hughes25299712001-03-06 10:10:06 +0000290#define PR_SYSCALL pr_lwp.pr_syscall
John Hughes58265892001-10-18 15:13:53 +0000291#define PR_INFO pr_lwp.pr_info
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000292#define PIOCSTIP PCSTOP
293#define PIOCSET PCSET
294#define PIOCRESET PCRESET
295#define PIOCSTRACE PCSTRACE
296#define PIOCSFAULT PCSFAULT
297#define PIOCWSTOP PCWSTOP
298#define PIOCSTOP PCSTOP
299#define PIOCSENTRY PCSENTRY
300#define PIOCSEXIT PCSEXIT
301#define PIOCRUN PCRUN
302#else
303#define IOCTL ioctl
Denys Vlasenkob63256e2011-06-07 12:13:24 +0200304#define IOCTL_STATUS(t) ioctl(t->pfd, PIOCSTATUS, &t->status)
305#define IOCTL_WSTOP(t) ioctl(t->pfd, PIOCWSTOP, &t->status)
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000306#define PR_WHY pr_why
307#define PR_WHAT pr_what
308#define PR_REG pr_reg
309#define PR_FLAGS pr_flags
John Hughes25299712001-03-06 10:10:06 +0000310#define PR_SYSCALL pr_syscall
John Hughes58265892001-10-18 15:13:53 +0000311#define PR_INFO pr_info
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000312#endif
313#endif
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000314#ifdef FREEBSD
315#define IOCTL ioctl
Denys Vlasenkob63256e2011-06-07 12:13:24 +0200316#define IOCTL_STATUS(t) ioctl(t->pfd, PIOCSTATUS, &t->status)
317#define IOCTL_WSTOP(t) ioctl(t->pfd, PIOCWAIT, &t->status)
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000318#define PIOCRUN PIOCCONT
319#define PIOCWSTOP PIOCWAIT
320#define PR_WHY why
321#define PR_WHAT val
Wichert Akkerman2e4ffe52000-09-03 23:57:48 +0000322#define PR_FLAGS state
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000323/* from /usr/src/sys/miscfs/procfs/procfs_vnops.c,
324 status.state = 0 for running, 1 for stopped */
Wichert Akkerman2e4ffe52000-09-03 23:57:48 +0000325#define PR_ASLEEP 1
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000326#define PR_SYSENTRY S_SCE
327#define PR_SYSEXIT S_SCX
328#define PR_SIGNALLED S_SIG
329#define PR_FAULTED S_CORE
330#endif
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000331
Wang Chaob13c0de2010-11-12 17:25:19 +0800332#ifdef LINUX
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000333# if !HAVE_DECL_PTRACE_SETOPTIONS
Wang Chaob13c0de2010-11-12 17:25:19 +0800334# define PTRACE_SETOPTIONS 0x4200
335# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000336# if !HAVE_DECL_PTRACE_GETEVENTMSG
Dmitry V. Levin696381e2010-12-14 00:02:35 +0000337# define PTRACE_GETEVENTMSG 0x4201
338# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000339# if !HAVE_DECL_PTRACE_GETSIGINFO
340# define PTRACE_GETSIGINFO 0x4202
341# endif
Dmitry V. Levin1b0df402011-07-19 22:13:11 +0000342
343# if !HAVE_DECL_PTRACE_O_TRACESYSGOOD
344# define PTRACE_O_TRACESYSGOOD 0x00000001
345# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000346# if !HAVE_DECL_PTRACE_O_TRACEFORK
Wang Chaob13c0de2010-11-12 17:25:19 +0800347# define PTRACE_O_TRACEFORK 0x00000002
348# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000349# if !HAVE_DECL_PTRACE_O_TRACEVFORK
Wang Chaob13c0de2010-11-12 17:25:19 +0800350# define PTRACE_O_TRACEVFORK 0x00000004
351# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000352# if !HAVE_DECL_PTRACE_O_TRACECLONE
Wang Chaob13c0de2010-11-12 17:25:19 +0800353# define PTRACE_O_TRACECLONE 0x00000008
354# endif
Dmitry V. Levin1b0df402011-07-19 22:13:11 +0000355# if !HAVE_DECL_PTRACE_O_TRACEEXEC
356# define PTRACE_O_TRACEEXEC 0x00000010
357# endif
358# if !HAVE_DECL_PTRACE_O_TRACEEXIT
359# define PTRACE_O_TRACEEXIT 0x00000040
360# endif
Wang Chaob13c0de2010-11-12 17:25:19 +0800361
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000362# if !HAVE_DECL_PTRACE_EVENT_FORK
Wang Chaob13c0de2010-11-12 17:25:19 +0800363# define PTRACE_EVENT_FORK 1
364# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000365# if !HAVE_DECL_PTRACE_EVENT_VFORK
Wang Chaob13c0de2010-11-12 17:25:19 +0800366# define PTRACE_EVENT_VFORK 2
367# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000368# if !HAVE_DECL_PTRACE_EVENT_CLONE
Wang Chaob13c0de2010-11-12 17:25:19 +0800369# define PTRACE_EVENT_CLONE 3
370# endif
Dmitry V. Levin1b0df402011-07-19 22:13:11 +0000371# if !HAVE_DECL_PTRACE_EVENT_EXEC
372# define PTRACE_EVENT_EXEC 4
373# endif
374# if !HAVE_DECL_PTRACE_EVENT_VFORK_DONE
375# define PTRACE_EVENT_VFORK_DONE 5
376# endif
377# if !HAVE_DECL_PTRACE_EVENT_EXIT
378# define PTRACE_EVENT_EXIT 6
379# endif
Wang Chaob13c0de2010-11-12 17:25:19 +0800380#endif /* LINUX */
381
Denys Vlasenko75422762011-05-27 14:36:01 +0200382#if !defined __GNUC__
383# define __attribute__(x) /*nothing*/
384#endif
385
Dmitry V. Levinfcda7a52011-06-13 21:58:43 +0000386#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
387
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000388/* Trace Control Block */
389struct tcb {
Denys Vlasenkod9ec1412011-08-20 01:39:05 +0200390 int flags; /* See below for TCB_ values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000391 int pid; /* Process Id of this entry */
392 long scno; /* System call number */
Denys Vlasenko8dc0c8c2011-08-20 13:44:56 +0200393 int u_nargs; /* System call argument count */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000394 long u_arg[MAX_ARGS]; /* System call arguments */
Roland McGrath542c2c62008-05-20 01:11:56 +0000395#if defined (LINUX_MIPSN32)
396 long long ext_arg[MAX_ARGS]; /* System call arguments */
397#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000398 int u_error; /* Error code */
399 long u_rval; /* (first) return value */
Wichert Akkerman16a03d22000-08-10 02:14:04 +0000400#ifdef HAVE_LONG_LONG
401 long long u_lrval; /* long long return value */
402#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000403 FILE *outf; /* Output file for this process */
Andreas Schwabccdff482009-10-27 16:27:13 +0100404 int curcol; /* Output column for this process */
Wichert Akkerman43a74822000-06-27 17:33:32 +0000405 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000406 struct timeval stime; /* System time usage as of last process wait */
407 struct timeval dtime; /* Delta for system time usage */
408 struct timeval etime; /* Syscall entry time */
409 /* Support for tracing forked processes */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000410 long baddr; /* `Breakpoint' address */
411 long inst[2]; /* Instructions on above */
Denys Vlasenko8dc0c8c2011-08-20 13:44:56 +0200412 int ptrace_errno;
413#ifdef USE_PROCFS
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000414 int pfd; /* proc file descriptor */
Denys Vlasenko8dc0c8c2011-08-20 13:44:56 +0200415#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000416#ifdef SVR4
Denys Vlasenko8dc0c8c2011-08-20 13:44:56 +0200417# ifdef HAVE_MP_PROCFS
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000418 int pfd_stat;
419 int pfd_as;
420 pstatus_t status;
Denys Vlasenko8dc0c8c2011-08-20 13:44:56 +0200421# else
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000422 prstatus_t status; /* procfs status structure */
Denys Vlasenko8dc0c8c2011-08-20 13:44:56 +0200423# endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000424#endif
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000425#ifdef FREEBSD
426 struct procfs_status status;
427 int pfd_reg;
428 int pfd_status;
429#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000430};
431
432/* TCB flags */
433#define TCB_STARTUP 00001 /* We have just begun ptracing this process */
434#define TCB_INUSE 00002 /* This table entry is in use */
435#define TCB_INSYSCALL 00004 /* A system call is in progress */
436#define TCB_ATTACHED 00010 /* Process is not our own child */
Denys Vlasenko44f87ef2011-08-17 15:18:21 +0200437#ifdef LINUX
438#define TCB_ATTACH_DONE 00020 /* PTRACE_ATTACH was done on this tcb->pid */
439#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000440#define TCB_BPTSET 00100 /* "Breakpoint" set after fork(2) */
441#define TCB_SIGTRAPPED 00200 /* Process wanted to block SIGTRAP */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000442#define TCB_REPRINT 01000 /* We should reprint this syscall on exit */
Grant Edwards8a082772011-04-07 20:25:40 +0000443#define TCB_FILTERED 02000 /* This system call has been filtered out */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000444#ifdef LINUX
Roland McGratheb9e2e82009-06-02 16:49:22 -0700445/* x86 does not need TCB_WAITEXECVE.
Denys Vlasenkobc161ec2009-01-02 18:02:45 +0000446 * It can detect execve's SIGTRAP by looking at eax/rax.
447 * See "stray syscall exit: eax = " message in syscall_fixup().
448 */
Denys Vlasenkoc71016e2009-03-06 00:33:24 +0000449# if defined(ALPHA) || defined(AVR32) || defined(SPARC) || defined(SPARC64) \
450 || defined(POWERPC) || defined(IA64) || defined(HPPA) \
451 || defined(SH) || defined(SH64) || defined(S390) || defined(S390X) \
Chris Metcalfc8c66982009-12-28 10:00:15 -0500452 || defined(ARM) || defined(MIPS) || defined(BFIN) || defined(TILE)
Denys Vlasenko44f87ef2011-08-17 15:18:21 +0200453# define TCB_WAITEXECVE 04000 /* ignore SIGTRAP after execve */
Wichert Akkerman7b3346b2001-10-09 23:47:38 +0000454# endif
Roland McGrath923f7502003-01-09 06:53:27 +0000455# include <sys/syscall.h>
456# ifndef __NR_exit_group
457# /* Hack: Most headers around are too old to have __NR_exit_group. */
458# ifdef ALPHA
459# define __NR_exit_group 405
460# elif defined I386
461# define __NR_exit_group 252
Dmitry V. Levinaca9a742006-10-11 22:56:49 +0000462# elif defined X86_64
463# define __NR_exit_group 231
Roland McGrath923f7502003-01-09 06:53:27 +0000464# elif defined IA64
465# define __NR_exit_group 1236
466# elif defined POWERPC
467# define __NR_exit_group 234
468# elif defined S390 || defined S390X
469# define __NR_exit_group 248
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000470# elif defined SPARC || defined SPARC64
Roland McGrath923f7502003-01-09 06:53:27 +0000471# define __NR_exit_group 188
Roland McGrath165155a2005-07-19 07:42:17 +0000472# elif defined M68K
473# define __NR_exit_group 247
Roland McGrath923f7502003-01-09 06:53:27 +0000474# endif /* ALPHA et al */
475# endif /* !__NR_exit_group */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000476#endif /* LINUX */
477
478/* qualifier flags */
479#define QUAL_TRACE 0001 /* this system call should be traced */
480#define QUAL_ABBREV 0002 /* abbreviate the structures of this syscall */
481#define QUAL_VERBOSE 0004 /* decode the structures of this syscall */
482#define QUAL_RAW 0010 /* print all args in hex for this syscall */
483#define QUAL_SIGNAL 0020 /* report events with this signal */
484#define QUAL_FAULT 0040 /* report events with this fault */
485#define QUAL_READ 0100 /* dump data read on this file descriptor */
486#define QUAL_WRITE 0200 /* dump data written to this file descriptor */
487
488#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
489#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
490#define syserror(tcp) ((tcp)->u_error != 0)
491#define verbose(tcp) (qual_flags[(tcp)->scno] & QUAL_VERBOSE)
492#define abbrev(tcp) (qual_flags[(tcp)->scno] & QUAL_ABBREV)
Grant Edwards8a082772011-04-07 20:25:40 +0000493#define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000494
495struct xlat {
496 int val;
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000497 const char *str;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000498};
499
Denys Vlasenkof535b542009-01-13 18:30:55 +0000500extern const struct xlat open_mode_flags[];
501extern const struct xlat addrfams[];
502extern const struct xlat struct_user_offsets[];
503extern const struct xlat open_access_modes[];
504
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000505/* Format of syscall return values */
506#define RVAL_DECIMAL 000 /* decimal format */
507#define RVAL_HEX 001 /* hex format */
508#define RVAL_OCTAL 002 /* octal format */
509#define RVAL_UDECIMAL 003 /* unsigned decimal format */
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000510#define RVAL_LDECIMAL 004 /* long decimal format */
511#define RVAL_LHEX 005 /* long hex format */
512#define RVAL_LOCTAL 006 /* long octal format */
513#define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000514#define RVAL_MASK 007 /* mask for these values */
515
516#define RVAL_STR 010 /* Print `auxstr' field after return val */
517#define RVAL_NONE 020 /* Print nothing */
518
519#ifndef offsetof
520#define offsetof(type, member) (((char *) &(((type *) NULL)->member)) - \
521 ((char *) (type *) NULL))
522#endif /* !offsetof */
523
524/* get offset of member within a user struct */
525#define uoff(member) offsetof(struct user, member)
526
527#define TRACE_FILE 001 /* Trace file-related syscalls. */
528#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
529#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
530#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
531#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
Roland McGrath2fe7b132005-07-05 03:25:35 +0000532#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
Dmitry V. Levin7655fa02011-02-05 01:07:08 +0000533#define SYSCALL_NEVER_FAILS 0100 /* Syscall is always successful. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000534
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000535typedef enum {
536 CFLAG_NONE = 0,
537 CFLAG_ONLY_STATS,
538 CFLAG_BOTH
539} cflag_t;
540
Roland McGrath138c6a32006-01-12 09:50:49 +0000541extern int *qual_flags;
Roland McGrath41c48222008-07-18 00:25:10 +0000542extern int debug, followfork;
Denys Vlasenkof44cce42011-06-21 14:34:10 +0200543extern unsigned int ptrace_setoptions;
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000544extern int dtime, xflag, qflag;
545extern cflag_t cflag;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000546extern int acolumn;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000547extern int max_strlen;
548extern struct tcb *tcp_last;
549
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000550enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
551
Denys Vlasenko75422762011-05-27 14:36:01 +0200552void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
553void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
554void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
555void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
556
Denys Vlasenko5c774b22011-08-20 01:50:09 +0200557extern void set_personality(int personality);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100558extern const char *xlookup(const struct xlat *, int);
559extern struct tcb *alloc_tcb(int, int);
560extern struct tcb *pid2tcb(int);
561extern void droptcb(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000562
Dmitry V. Levin10de62b2006-12-13 21:45:31 +0000563#define alloctcb(pid) alloc_tcb((pid), 1)
564
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000565extern void set_sortby(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100566extern void set_overhead(int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000567extern void qualify(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100568extern int get_scno(struct tcb *);
569extern long known_scno(struct tcb *);
570extern long do_ptrace(int request, struct tcb *tcp, void *addr, void *data);
571extern int ptrace_restart(int request, struct tcb *tcp, int sig);
Andreas Schwab102e69a2010-07-03 21:40:09 +0200572extern int force_result(struct tcb *, int, long);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100573extern int trace_syscall(struct tcb *);
Denys Vlasenkoc95a88f2011-08-21 17:47:40 +0200574extern void count_syscall(struct tcb *, struct timeval *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100575extern void printxval(const struct xlat *, int, const char *);
576extern int printargs(struct tcb *);
Denys Vlasenko4924dbd2011-08-19 18:06:46 +0200577extern void addflags(const struct xlat *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100578extern int printflags(const struct xlat *, int, const char *);
579extern const char *sprintflags(const char *, const struct xlat *, int);
580extern int umoven(struct tcb *, long, int, char *);
581extern int umovestr(struct tcb *, long, int, char *);
582extern int upeek(struct tcb *, long, long *);
583extern void dumpiov(struct tcb *, int, long);
584extern void dumpstr(struct tcb *, long, int);
585extern void printstr(struct tcb *, long, int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000586extern void printnum(struct tcb *, long, const char *);
587extern void printnum_int(struct tcb *, long, const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100588extern void printpath(struct tcb *, long);
589extern void printpathn(struct tcb *, long, int);
590extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
591extern void sprinttv(struct tcb *, long, enum bitness_t, char *);
592extern void print_timespec(struct tcb *, long);
593extern void sprint_timespec(char *, struct tcb *, long);
John Hughes58265892001-10-18 15:13:53 +0000594#ifdef HAVE_SIGINFO_T
Andreas Schwabe5355de2009-10-27 16:56:43 +0100595extern void printsiginfo(siginfo_t *, int);
John Hughes58265892001-10-18 15:13:53 +0000596#endif
Grant Edwards8a082772011-04-07 20:25:40 +0000597extern const char *getfdpath(struct tcb *, int);
Dmitry V. Levin31382132011-03-04 05:08:02 +0300598extern void printfd(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100599extern void printsock(struct tcb *, long, int);
600extern void print_sock_optmgmt(struct tcb *, long, int);
601extern void printrusage(struct tcb *, long);
Sergei Trofimovich02a08fb2011-08-11 18:04:53 +0300602#ifdef ALPHA
603extern void printrusage32(struct tcb *, long);
604#endif
Andreas Schwabe5355de2009-10-27 16:56:43 +0100605extern void printuid(const char *, unsigned long);
606extern int clearbpt(struct tcb *);
Denys Vlasenko91ecfac2011-06-23 22:05:50 +0200607/*
608 * On Linux, "setbpt" is a misnomer: we don't set a breakpoint
609 * (IOW: no poking in user's text segment),
610 * instead we change fork/vfork/clone into clone(CLONE_PTRACE).
611 * On newer kernels, we use PTRACE_O_TRACECLONE/TRACE[V]FORK instead.
612 */
Andreas Schwabe5355de2009-10-27 16:56:43 +0100613extern int setbpt(struct tcb *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100614extern void printcall(struct tcb *);
615extern const char *signame(int);
616extern void print_sigset(struct tcb *, long, int);
617extern void printsignal(int);
618extern void printleader(struct tcb *);
619extern void printtrailer(void);
620extern void tabto(int);
621extern void call_summary(FILE *);
Dmitry V. Levin88849682011-06-13 22:58:44 +0000622extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100623extern void tprint_open_modes(mode_t);
624extern const char *sprint_open_modes(mode_t);
625extern int is_restart_error(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000626
Grant Edwards8a082772011-04-07 20:25:40 +0000627extern int pathtrace_select(const char *);
628extern int pathtrace_match(struct tcb *);
629
Andreas Schwabe5355de2009-10-27 16:56:43 +0100630extern int change_syscall(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100631extern int internal_fork(struct tcb *);
632extern int internal_exec(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000633
Andreas Schwabe5355de2009-10-27 16:56:43 +0100634extern const struct ioctlent *ioctl_lookup(long);
635extern const struct ioctlent *ioctl_next_match(const struct ioctlent *);
636extern int ioctl_decode(struct tcb *, long, long);
637extern int term_ioctl(struct tcb *, long, long);
638extern int sock_ioctl(struct tcb *, long, long);
639extern int proc_ioctl(struct tcb *, int, int);
640extern int stream_ioctl(struct tcb *, int, int);
Roland McGrathd83c50b2004-10-06 22:27:43 +0000641#ifdef LINUX
Andreas Schwabe5355de2009-10-27 16:56:43 +0100642extern int rtc_ioctl(struct tcb *, long, long);
643extern int scsi_ioctl(struct tcb *, long, long);
Dmitry V. Levin4ef6db42011-01-15 20:15:31 +0000644extern int block_ioctl(struct tcb *, long, long);
Roland McGrathd83c50b2004-10-06 22:27:43 +0000645#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000646
Andreas Schwabe5355de2009-10-27 16:56:43 +0100647extern int tv_nz(struct timeval *);
648extern int tv_cmp(struct timeval *, struct timeval *);
649extern double tv_float(struct timeval *);
650extern void tv_add(struct timeval *, struct timeval *, struct timeval *);
651extern void tv_sub(struct timeval *, struct timeval *, struct timeval *);
652extern void tv_mul(struct timeval *, struct timeval *, int);
653extern void tv_div(struct timeval *, struct timeval *, int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000654
655#ifdef SUNOS4
Andreas Schwabe5355de2009-10-27 16:56:43 +0100656extern int fixvfork(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000657#endif
Carmelo AMOROSOb9c52572010-12-13 08:48:28 +0100658#if !(defined(LINUX) && !defined(SPARC) && !defined(SPARC64) && !defined(IA64) \
659 && !defined(SH))
Andreas Schwabe5355de2009-10-27 16:56:43 +0100660extern long getrval2(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000661#endif
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000662#ifdef USE_PROCFS
Andreas Schwabe5355de2009-10-27 16:56:43 +0100663extern int proc_open(struct tcb *tcp, int attaching);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000664#endif
665
666#define umove(pid, addr, objp) \
667 umoven((pid), (addr), sizeof *(objp), (char *) (objp))
668
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000669#define printtv(tcp, addr) \
Roland McGrath6afc5652007-07-24 01:57:11 +0000670 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
671#define printtv_special(tcp, addr) \
672 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000673
Denys Vlasenko75422762011-05-27 14:36:01 +0200674extern void tprintf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000675
676#ifndef HAVE_STRERROR
Andreas Schwabe5355de2009-10-27 16:56:43 +0100677const char *strerror(int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000678#endif
679#ifndef HAVE_STRSIGNAL
Andreas Schwabe5355de2009-10-27 16:56:43 +0100680const char *strsignal(int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000681#endif
682
683extern int current_personality;
Dmitry V. Levin4ebb4e32006-12-13 17:08:08 +0000684extern const int personality_wordsize[];
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000685
686struct sysent {
687 int nargs;
688 int sys_flags;
689 int (*sys_func)();
Roland McGrathee36ce12004-09-04 03:53:10 +0000690 const char *sys_name;
Roland McGrath76989d72005-06-07 23:21:31 +0000691 long native_scno; /* Match against SYS_* constants. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000692};
693
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000694struct ioctlent {
Roland McGrathee36ce12004-09-04 03:53:10 +0000695 const char *doth;
696 const char *symbol;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000697 unsigned long code;
698};
699
Denys Vlasenko39fca622011-08-20 02:12:33 +0200700extern const struct sysent *sysent;
701extern int nsyscalls;
702extern const char *const *errnoent;
703extern int nerrnos;
Roland McGrathee36ce12004-09-04 03:53:10 +0000704extern const struct ioctlent *ioctlent;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000705extern int nioctlents;
Roland McGrathee36ce12004-09-04 03:53:10 +0000706extern const char *const *signalent;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000707extern int nsignals;
708
John Hughes0c79e012001-03-08 14:40:06 +0000709#if HAVE_LONG_LONG
John Hughes5a826b82001-03-07 13:21:24 +0000710
John Hughesbdf48f52001-03-06 15:08:09 +0000711/* _l refers to the lower numbered u_arg,
712 * _h refers to the higher numbered u_arg
713 */
John Hughes5a826b82001-03-07 13:21:24 +0000714
John Hughesb8a85a42001-03-28 08:05:27 +0000715#if HAVE_LITTLE_ENDIAN_LONG_LONG
John Hughes0c79e012001-03-08 14:40:06 +0000716#define LONG_LONG(_l,_h) \
Wichert Akkerman7ab47b62002-03-31 19:00:02 +0000717 ((long long)((unsigned long long)(unsigned)(_l) | ((unsigned long long)(_h)<<32)))
John Hughesbdf48f52001-03-06 15:08:09 +0000718#else
John Hughes0c79e012001-03-08 14:40:06 +0000719#define LONG_LONG(_l,_h) \
Wichert Akkerman7ab47b62002-03-31 19:00:02 +0000720 ((long long)((unsigned long long)(unsigned)(_h) | ((unsigned long long)(_l)<<32)))
John Hughesbdf48f52001-03-06 15:08:09 +0000721#endif
Andreas Schwabb5600fc2009-11-04 17:08:34 +0100722
723extern int printllval(struct tcb *, const char *, int);
John Hughesbdf48f52001-03-06 15:08:09 +0000724#endif
Wichert Akkerman7b3346b2001-10-09 23:47:38 +0000725
726#ifdef IA64
727extern long ia32;
728#endif
Michal Ludvig17f8fb32002-11-06 13:17:21 +0000729
730extern int not_failing_only;
Grant Edwards8a082772011-04-07 20:25:40 +0000731extern int show_fd_path;
732extern int tracing_paths;