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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
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000051/* configuration section */
52#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
60#define DEFAULT_STRLEN 32 /* default maximum # of bytes printed in
61 `printstr', change with `-s' switch */
62#endif
63#ifndef DEFAULT_ACOLUMN
64#define DEFAULT_ACOLUMN 40 /* default alignment column for results */
65#endif
66#ifndef MAX_ARGS
Dmitry V. Levin67874d82009-10-05 23:32:39 +000067# ifdef HPPA
68# define MAX_ARGS 6 /* maximum number of args to a syscall */
69# else
70# define MAX_ARGS 32 /* maximum number of args to a syscall */
71# endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000072#endif
73#ifndef DEFAULT_SORTBY
74#define DEFAULT_SORTBY "time" /* default sorting method for call profiling */
75#endif
76
77#include <sys/types.h>
78#include <unistd.h>
79#include <stdlib.h>
80#include <stdio.h>
81#include <ctype.h>
82#include <string.h>
Wichert Akkerman8c7122c2001-02-16 19:59:55 +000083#include <time.h>
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000084#include <sys/time.h>
85#include <errno.h>
86
Roland McGrath639658b2008-08-01 01:06:31 +000087#ifdef HAVE_STDBOOL_H
88#include <stdbool.h>
89#endif
90
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000091#ifdef STDC_HEADERS
92#include <stddef.h>
93#endif /* STDC_HEADERS */
94
John Hughes58265892001-10-18 15:13:53 +000095#ifdef HAVE_SIGINFO_T
96#include <signal.h>
97#endif
98
Wichert Akkermanf5eeabb1999-11-18 17:09:47 +000099#if defined(LINUX)
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000100# if defined(SPARC) || defined(SPARC64)
Wichert Akkermanf5eeabb1999-11-18 17:09:47 +0000101# define LINUXSPARC
102# endif
Michal Ludvig0e035502002-09-23 15:41:01 +0000103# if defined(X86_64)
104# define LINUX_X86_64
105# endif
Roland McGrath542c2c62008-05-20 01:11:56 +0000106# if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI32
107# define LINUX_MIPSO32
108# endif
109# if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_NABI32
110# define LINUX_MIPSN32
111# define LINUX_MIPS64
112# endif
113# if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI64
114# define LINUX_MIPSN64
115# define LINUX_MIPS64
116# endif
Denys Vlasenko8ba1cd72008-12-30 17:50:46 +0000117# if defined(ARM)
118# define LINUX_ARM
119# endif
Denys Vlasenko5ae2b7c2009-02-27 20:32:52 +0000120# if defined(AVR32)
121# define LINUX_AVR32
122# endif
Roland McGrathee9d4352002-12-18 04:16:10 +0000123#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000124
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000125#if defined(SVR4) || defined(FREEBSD)
126#define USE_PROCFS
127#else
128#undef USE_PROCFS
129#endif
130
131#ifdef FREEBSD
132#ifndef I386
133#error "FreeBSD support is only for i386 arch right now."
134#endif
135#include <machine/psl.h>
136#include <machine/reg.h>
137#include <sys/syscall.h>
138#endif
139
140#ifdef USE_PROCFS
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000141#include <sys/procfs.h>
Wichert Akkermanea78f0f1999-11-29 15:34:02 +0000142#ifdef HAVE_MP_PROCFS
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000143#include <sys/uio.h>
144#endif
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000145#ifdef FREEBSD
146#include <sys/pioctl.h>
147#endif /* FREEBSD */
148#else /* !USE_PROCFS */
Denys Vlasenko5ae2b7c2009-02-27 20:32:52 +0000149#if (defined(LINUXSPARC) || defined(LINUX_X86_64) || defined(LINUX_ARM) || defined(LINUX_AVR32)) && defined(__GLIBC__)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000150#include <sys/ptrace.h>
151#else
152/* Work around awkward prototype in ptrace.h. */
153#define ptrace xptrace
154#include <sys/ptrace.h>
155#undef ptrace
156#ifdef POWERPC
157#define __KERNEL__
158#include <asm/ptrace.h>
159#undef __KERNEL__
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000160#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000161#ifdef LINUX
162extern long ptrace(int, int, char *, long);
163#else /* !LINUX */
164extern int ptrace(int, int, char *, int, ...);
165#endif /* !LINUX */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000166#endif /* !LINUXSPARC */
167#endif /* !SVR4 */
168
169#ifdef LINUX
Wichert Akkermanb859bea1999-04-18 22:50:50 +0000170#if !defined(__GLIBC__)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000171#define PTRACE_PEEKUSER PTRACE_PEEKUSR
172#define PTRACE_POKEUSER PTRACE_POKEUSR
173#endif
174#ifdef ALPHA
Wichert Akkermanf90da011999-10-31 21:15:38 +0000175# define REG_R0 0
176# define REG_A0 16
177# define REG_A3 19
178# define REG_FP 30
179# define REG_PC 64
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000180#endif /* ALPHA */
Wichert Akkermanf90da011999-10-31 21:15:38 +0000181#ifdef MIPS
182# define REG_V0 2
183# define REG_A0 4
184# define REG_A3 7
185# define REG_SP 29
186# define REG_EPC 64
187#endif /* MIPS */
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000188#ifdef HPPA
189# define PT_GR20 (20*4)
190# define PT_GR26 (26*4)
191# define PT_GR28 (28*4)
192# define PT_IAOQ0 (106*4)
193# define PT_IAOQ1 (107*4)
194#endif /* HPPA */
Roland McGrathf5a47772003-06-26 22:40:42 +0000195#ifdef SH64
196 /* SH64 Linux - this code assumes the following kernel API for system calls:
Roland McGrathe1e584b2003-06-02 19:18:58 +0000197 PC Offset 0
198 System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
199 where n = no. of parameters.
200 Other regs Offset 24+
201
202 On entry: R2-7 = parameters 1-6 (as many as necessary)
203 On return: R9 = result. */
204
205 /* Offset for peeks of registers */
206# define REG_OFFSET (24)
207# define REG_GENERAL(x) (8*(x)+REG_OFFSET)
208# define REG_PC (0*8)
209# define REG_SYSCALL (2*8)
Roland McGrathf5a47772003-06-26 22:40:42 +0000210#endif /* SH64 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000211#endif /* LINUX */
212
213#define SUPPORTED_PERSONALITIES 1
214#define DEFAULT_PERSONALITY 0
215
216#ifdef LINUXSPARC
Mike Frysinger8566c502009-10-12 11:05:14 -0400217/* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
218 * by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
219#define U_REG_G1 0
220#define U_REG_O0 7
221#define U_REG_O1 8
Roland McGrath4b2dcca2006-01-12 10:18:53 +0000222#define PERSONALITY0_WORDSIZE 4
223#define PERSONALITY1_WORDSIZE 4
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000224#undef SUPPORTED_PERSONALITIES
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000225#if defined(SPARC64)
Roland McGrath5aa04342007-09-12 01:26:26 +0000226#include <asm/psrcompat.h>
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000227#define SUPPORTED_PERSONALITIES 3
Roland McGrath4b2dcca2006-01-12 10:18:53 +0000228#define PERSONALITY2_WORDSIZE 8
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000229#else
Roland McGrath5aa04342007-09-12 01:26:26 +0000230#include <asm/psr.h>
Wichert Akkermanb859bea1999-04-18 22:50:50 +0000231#define SUPPORTED_PERSONALITIES 2
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000232#endif /* SPARC64 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000233#endif /* LINUXSPARC */
234
Michal Ludvig0e035502002-09-23 15:41:01 +0000235#ifdef X86_64
236#undef SUPPORTED_PERSONALITIES
237#define SUPPORTED_PERSONALITIES 2
Roland McGrath4b2dcca2006-01-12 10:18:53 +0000238#define PERSONALITY0_WORDSIZE 8
239#define PERSONALITY1_WORDSIZE 4
Roland McGrathee9d4352002-12-18 04:16:10 +0000240#endif
241
Roland McGrath56703312008-05-20 01:35:55 +0000242#ifdef ARM
243#undef SUPPORTED_PERSONALITIES
244#define SUPPORTED_PERSONALITIES 2
245#define PERSONALITY0_WORDSIZE 4
246#define PERSONALITY1_WORDSIZE 4
247#endif
248
Andreas Schwabd69fa492010-07-12 21:39:57 +0200249#ifdef POWERPC64
250#undef SUPPORTED_PERSONALITIES
251#define SUPPORTED_PERSONALITIES 2
252#define PERSONALITY0_WORDSIZE 8
253#define PERSONALITY1_WORDSIZE 4
254#endif
255
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000256#ifdef SVR4
Wichert Akkermanea78f0f1999-11-29 15:34:02 +0000257#ifdef HAVE_MP_PROCFS
Denys Vlasenkob63256e2011-06-07 12:13:24 +0200258extern int mp_ioctl(int f, int c, void *a, int s);
259#define IOCTL(f,c,a) mp_ioctl(f, c, a, sizeof *a)
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000260#define IOCTL_STATUS(t) \
Denys Vlasenkob63256e2011-06-07 12:13:24 +0200261 pread(t->pfd_stat, &t->status, sizeof t->status, 0)
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000262#define IOCTL_WSTOP(t) \
Denys Vlasenkob63256e2011-06-07 12:13:24 +0200263 (IOCTL(t->pfd, PCWSTOP, (char *)NULL) < 0 ? -1 : \
264 IOCTL_STATUS(t))
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000265#define PR_WHY pr_lwp.pr_why
266#define PR_WHAT pr_lwp.pr_what
267#define PR_REG pr_lwp.pr_context.uc_mcontext.gregs
268#define PR_FLAGS pr_lwp.pr_flags
John Hughes25299712001-03-06 10:10:06 +0000269#define PR_SYSCALL pr_lwp.pr_syscall
John Hughes58265892001-10-18 15:13:53 +0000270#define PR_INFO pr_lwp.pr_info
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000271#define PIOCSTIP PCSTOP
272#define PIOCSET PCSET
273#define PIOCRESET PCRESET
274#define PIOCSTRACE PCSTRACE
275#define PIOCSFAULT PCSFAULT
276#define PIOCWSTOP PCWSTOP
277#define PIOCSTOP PCSTOP
278#define PIOCSENTRY PCSENTRY
279#define PIOCSEXIT PCSEXIT
280#define PIOCRUN PCRUN
281#else
282#define IOCTL ioctl
Denys Vlasenkob63256e2011-06-07 12:13:24 +0200283#define IOCTL_STATUS(t) ioctl(t->pfd, PIOCSTATUS, &t->status)
284#define IOCTL_WSTOP(t) ioctl(t->pfd, PIOCWSTOP, &t->status)
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000285#define PR_WHY pr_why
286#define PR_WHAT pr_what
287#define PR_REG pr_reg
288#define PR_FLAGS pr_flags
John Hughes25299712001-03-06 10:10:06 +0000289#define PR_SYSCALL pr_syscall
John Hughes58265892001-10-18 15:13:53 +0000290#define PR_INFO pr_info
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000291#endif
292#endif
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000293#ifdef FREEBSD
294#define IOCTL ioctl
Denys Vlasenkob63256e2011-06-07 12:13:24 +0200295#define IOCTL_STATUS(t) ioctl(t->pfd, PIOCSTATUS, &t->status)
296#define IOCTL_WSTOP(t) ioctl(t->pfd, PIOCWAIT, &t->status)
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000297#define PIOCRUN PIOCCONT
298#define PIOCWSTOP PIOCWAIT
299#define PR_WHY why
300#define PR_WHAT val
Wichert Akkerman2e4ffe52000-09-03 23:57:48 +0000301#define PR_FLAGS state
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000302/* from /usr/src/sys/miscfs/procfs/procfs_vnops.c,
303 status.state = 0 for running, 1 for stopped */
Wichert Akkerman2e4ffe52000-09-03 23:57:48 +0000304#define PR_ASLEEP 1
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000305#define PR_SYSENTRY S_SCE
306#define PR_SYSEXIT S_SCX
307#define PR_SIGNALLED S_SIG
308#define PR_FAULTED S_CORE
309#endif
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000310
Wang Chaob13c0de2010-11-12 17:25:19 +0800311#ifdef LINUX
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000312# if !HAVE_DECL_PTRACE_SETOPTIONS
Wang Chaob13c0de2010-11-12 17:25:19 +0800313# define PTRACE_SETOPTIONS 0x4200
314# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000315# if !HAVE_DECL_PTRACE_GETEVENTMSG
Dmitry V. Levin696381e2010-12-14 00:02:35 +0000316# define PTRACE_GETEVENTMSG 0x4201
317# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000318# if !HAVE_DECL_PTRACE_GETSIGINFO
319# define PTRACE_GETSIGINFO 0x4202
320# endif
321# if !HAVE_DECL_PTRACE_O_TRACEFORK
Wang Chaob13c0de2010-11-12 17:25:19 +0800322# define PTRACE_O_TRACEFORK 0x00000002
323# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000324# if !HAVE_DECL_PTRACE_O_TRACEVFORK
Wang Chaob13c0de2010-11-12 17:25:19 +0800325# define PTRACE_O_TRACEVFORK 0x00000004
326# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000327# if !HAVE_DECL_PTRACE_O_TRACECLONE
Wang Chaob13c0de2010-11-12 17:25:19 +0800328# define PTRACE_O_TRACECLONE 0x00000008
329# endif
330
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000331# if !HAVE_DECL_PTRACE_EVENT_FORK
Wang Chaob13c0de2010-11-12 17:25:19 +0800332# define PTRACE_EVENT_FORK 1
333# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000334# if !HAVE_DECL_PTRACE_EVENT_VFORK
Wang Chaob13c0de2010-11-12 17:25:19 +0800335# define PTRACE_EVENT_VFORK 2
336# endif
Dmitry V. Levin03aefda2011-03-15 17:19:09 +0000337# if !HAVE_DECL_PTRACE_EVENT_CLONE
Wang Chaob13c0de2010-11-12 17:25:19 +0800338# define PTRACE_EVENT_CLONE 3
339# endif
340#endif /* LINUX */
341
Denys Vlasenko75422762011-05-27 14:36:01 +0200342#if !defined __GNUC__
343# define __attribute__(x) /*nothing*/
344#endif
345
Dmitry V. Levinfcda7a52011-06-13 21:58:43 +0000346#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
347
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000348/* Trace Control Block */
349struct tcb {
Roland McGratheb9e2e82009-06-02 16:49:22 -0700350 short flags; /* See below for TCB_ values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000351 int pid; /* Process Id of this entry */
352 long scno; /* System call number */
353 int u_nargs; /* System call arguments */
354 long u_arg[MAX_ARGS]; /* System call arguments */
Roland McGrath542c2c62008-05-20 01:11:56 +0000355#if defined (LINUX_MIPSN32)
356 long long ext_arg[MAX_ARGS]; /* System call arguments */
357#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000358 int u_error; /* Error code */
359 long u_rval; /* (first) return value */
Wichert Akkerman16a03d22000-08-10 02:14:04 +0000360#ifdef HAVE_LONG_LONG
361 long long u_lrval; /* long long return value */
362#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000363 FILE *outf; /* Output file for this process */
Andreas Schwabccdff482009-10-27 16:27:13 +0100364 int curcol; /* Output column for this process */
Wichert Akkerman43a74822000-06-27 17:33:32 +0000365 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000366 struct timeval stime; /* System time usage as of last process wait */
367 struct timeval dtime; /* Delta for system time usage */
368 struct timeval etime; /* Syscall entry time */
369 /* Support for tracing forked processes */
370 struct tcb *parent; /* Parent of this process */
371 int nchildren; /* # of traced children */
372 int waitpid; /* pid(s) this process is waiting for */
Roland McGrath09623452003-05-23 02:27:13 +0000373 int nzombies; /* # of formerly traced children now dead */
Roland McGrath923f7502003-01-09 06:53:27 +0000374#ifdef LINUX
375 int nclone_threads; /* # of nchildren with CLONE_THREAD */
Roland McGrath923f7502003-01-09 06:53:27 +0000376 int nclone_waiting; /* clone threads in wait4 (TCB_SUSPENDED) */
Denys Vlasenko1e3ce322008-12-22 19:14:47 +0000377#endif
Roland McGratheb9e2e82009-06-02 16:49:22 -0700378 /* (1st arg of wait4()) */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000379 long baddr; /* `Breakpoint' address */
380 long inst[2]; /* Instructions on above */
381 int pfd; /* proc file descriptor */
382#ifdef SVR4
Wichert Akkermanea78f0f1999-11-29 15:34:02 +0000383#ifdef HAVE_MP_PROCFS
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000384 int pfd_stat;
385 int pfd_as;
386 pstatus_t status;
387#else
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000388 prstatus_t status; /* procfs status structure */
389#endif
Wichert Akkerman9ce1a631999-08-29 23:15:07 +0000390#endif
Denys Vlasenko732d1bf2008-12-17 19:21:59 +0000391 int ptrace_errno;
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000392#ifdef FREEBSD
393 struct procfs_status status;
394 int pfd_reg;
395 int pfd_status;
396#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000397};
398
399/* TCB flags */
400#define TCB_STARTUP 00001 /* We have just begun ptracing this process */
401#define TCB_INUSE 00002 /* This table entry is in use */
402#define TCB_INSYSCALL 00004 /* A system call is in progress */
403#define TCB_ATTACHED 00010 /* Process is not our own child */
404#define TCB_EXITING 00020 /* As far as we know, this process is exiting */
Denys Vlasenko3bb7cd62009-02-09 18:55:59 +0000405#define TCB_SUSPENDED 00040 /* Process can not be allowed to resume just now */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000406#define TCB_BPTSET 00100 /* "Breakpoint" set after fork(2) */
407#define TCB_SIGTRAPPED 00200 /* Process wanted to block SIGTRAP */
Roland McGratheb9e2e82009-06-02 16:49:22 -0700408#define TCB_FOLLOWFORK 00400 /* Process should have forks followed */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000409#define TCB_REPRINT 01000 /* We should reprint this syscall on exit */
Grant Edwards8a082772011-04-07 20:25:40 +0000410#define TCB_FILTERED 02000 /* This system call has been filtered out */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000411#ifdef LINUX
Roland McGratheb9e2e82009-06-02 16:49:22 -0700412/* x86 does not need TCB_WAITEXECVE.
Denys Vlasenkobc161ec2009-01-02 18:02:45 +0000413 * It can detect execve's SIGTRAP by looking at eax/rax.
414 * See "stray syscall exit: eax = " message in syscall_fixup().
415 */
Denys Vlasenkoc71016e2009-03-06 00:33:24 +0000416# if defined(ALPHA) || defined(AVR32) || defined(SPARC) || defined(SPARC64) \
417 || defined(POWERPC) || defined(IA64) || defined(HPPA) \
418 || defined(SH) || defined(SH64) || defined(S390) || defined(S390X) \
Chris Metcalfc8c66982009-12-28 10:00:15 -0500419 || defined(ARM) || defined(MIPS) || defined(BFIN) || defined(TILE)
Grant Edwards8a082772011-04-07 20:25:40 +0000420# define TCB_WAITEXECVE 04000 /* ignore SIGTRAP after exceve */
Wichert Akkerman7b3346b2001-10-09 23:47:38 +0000421# endif
Roland McGrath923f7502003-01-09 06:53:27 +0000422# define TCB_CLONE_THREAD 010000 /* CLONE_THREAD set in creating syscall */
423# define TCB_GROUP_EXITING 020000 /* TCB_EXITING was exit_group, not _exit */
424# include <sys/syscall.h>
425# ifndef __NR_exit_group
426# /* Hack: Most headers around are too old to have __NR_exit_group. */
427# ifdef ALPHA
428# define __NR_exit_group 405
429# elif defined I386
430# define __NR_exit_group 252
Dmitry V. Levinaca9a742006-10-11 22:56:49 +0000431# elif defined X86_64
432# define __NR_exit_group 231
Roland McGrath923f7502003-01-09 06:53:27 +0000433# elif defined IA64
434# define __NR_exit_group 1236
435# elif defined POWERPC
436# define __NR_exit_group 234
437# elif defined S390 || defined S390X
438# define __NR_exit_group 248
Roland McGrath6d1a65c2004-07-12 07:44:08 +0000439# elif defined SPARC || defined SPARC64
Roland McGrath923f7502003-01-09 06:53:27 +0000440# define __NR_exit_group 188
Roland McGrath165155a2005-07-19 07:42:17 +0000441# elif defined M68K
442# define __NR_exit_group 247
Roland McGrath923f7502003-01-09 06:53:27 +0000443# endif /* ALPHA et al */
444# endif /* !__NR_exit_group */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000445#endif /* LINUX */
446
447/* qualifier flags */
448#define QUAL_TRACE 0001 /* this system call should be traced */
449#define QUAL_ABBREV 0002 /* abbreviate the structures of this syscall */
450#define QUAL_VERBOSE 0004 /* decode the structures of this syscall */
451#define QUAL_RAW 0010 /* print all args in hex for this syscall */
452#define QUAL_SIGNAL 0020 /* report events with this signal */
453#define QUAL_FAULT 0040 /* report events with this fault */
454#define QUAL_READ 0100 /* dump data read on this file descriptor */
455#define QUAL_WRITE 0200 /* dump data written to this file descriptor */
456
457#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
458#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
459#define syserror(tcp) ((tcp)->u_error != 0)
460#define verbose(tcp) (qual_flags[(tcp)->scno] & QUAL_VERBOSE)
461#define abbrev(tcp) (qual_flags[(tcp)->scno] & QUAL_ABBREV)
Grant Edwards8a082772011-04-07 20:25:40 +0000462#define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000463
464struct xlat {
465 int val;
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000466 const char *str;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000467};
468
Denys Vlasenkof535b542009-01-13 18:30:55 +0000469extern const struct xlat open_mode_flags[];
470extern const struct xlat addrfams[];
471extern const struct xlat struct_user_offsets[];
472extern const struct xlat open_access_modes[];
473
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000474/* Format of syscall return values */
475#define RVAL_DECIMAL 000 /* decimal format */
476#define RVAL_HEX 001 /* hex format */
477#define RVAL_OCTAL 002 /* octal format */
478#define RVAL_UDECIMAL 003 /* unsigned decimal format */
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000479#define RVAL_LDECIMAL 004 /* long decimal format */
480#define RVAL_LHEX 005 /* long hex format */
481#define RVAL_LOCTAL 006 /* long octal format */
482#define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000483#define RVAL_MASK 007 /* mask for these values */
484
485#define RVAL_STR 010 /* Print `auxstr' field after return val */
486#define RVAL_NONE 020 /* Print nothing */
487
488#ifndef offsetof
489#define offsetof(type, member) (((char *) &(((type *) NULL)->member)) - \
490 ((char *) (type *) NULL))
491#endif /* !offsetof */
492
493/* get offset of member within a user struct */
494#define uoff(member) offsetof(struct user, member)
495
496#define TRACE_FILE 001 /* Trace file-related syscalls. */
497#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
498#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
499#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
500#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
Roland McGrath2fe7b132005-07-05 03:25:35 +0000501#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
Dmitry V. Levin7655fa02011-02-05 01:07:08 +0000502#define SYSCALL_NEVER_FAILS 0100 /* Syscall is always successful. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000503
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000504typedef enum {
505 CFLAG_NONE = 0,
506 CFLAG_ONLY_STATS,
507 CFLAG_BOTH
508} cflag_t;
509
Roland McGrathee9d4352002-12-18 04:16:10 +0000510extern struct tcb **tcbtab;
Roland McGrath138c6a32006-01-12 09:50:49 +0000511extern int *qual_flags;
Roland McGrath41c48222008-07-18 00:25:10 +0000512extern int debug, followfork;
Denys Vlasenko3454e4b2011-05-23 21:29:03 +0200513extern unsigned int ptrace_setoptions_followfork;
Denys Vlasenkof8bc0652011-05-24 20:30:24 +0200514extern unsigned int ptrace_setoptions_for_all;
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000515extern int dtime, xflag, qflag;
516extern cflag_t cflag;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000517extern int acolumn;
Roland McGrathee9d4352002-12-18 04:16:10 +0000518extern unsigned int nprocs, tcbtabsize;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000519extern int max_strlen;
520extern struct tcb *tcp_last;
521
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000522enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
523
Denys Vlasenko75422762011-05-27 14:36:01 +0200524void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
525void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
526void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
527void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
528
Andreas Schwabe5355de2009-10-27 16:56:43 +0100529extern int set_personality(int personality);
530extern const char *xlookup(const struct xlat *, int);
531extern struct tcb *alloc_tcb(int, int);
532extern struct tcb *pid2tcb(int);
533extern void droptcb(struct tcb *);
534extern void expand_tcbtab(void);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000535
Dmitry V. Levin10de62b2006-12-13 21:45:31 +0000536#define alloctcb(pid) alloc_tcb((pid), 1)
537
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000538extern void set_sortby(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100539extern void set_overhead(int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000540extern void qualify(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100541extern int get_scno(struct tcb *);
542extern long known_scno(struct tcb *);
543extern long do_ptrace(int request, struct tcb *tcp, void *addr, void *data);
544extern int ptrace_restart(int request, struct tcb *tcp, int sig);
Andreas Schwab102e69a2010-07-03 21:40:09 +0200545extern int force_result(struct tcb *, int, long);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100546extern int trace_syscall(struct tcb *);
547extern int count_syscall(struct tcb *, struct timeval *);
548extern void printxval(const struct xlat *, int, const char *);
549extern int printargs(struct tcb *);
550extern int addflags(const struct xlat *, int);
551extern int printflags(const struct xlat *, int, const char *);
552extern const char *sprintflags(const char *, const struct xlat *, int);
553extern int umoven(struct tcb *, long, int, char *);
554extern int umovestr(struct tcb *, long, int, char *);
555extern int upeek(struct tcb *, long, long *);
556extern void dumpiov(struct tcb *, int, long);
557extern void dumpstr(struct tcb *, long, int);
558extern void printstr(struct tcb *, long, int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000559extern void printnum(struct tcb *, long, const char *);
560extern void printnum_int(struct tcb *, long, const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100561extern void printpath(struct tcb *, long);
562extern void printpathn(struct tcb *, long, int);
563extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
564extern void sprinttv(struct tcb *, long, enum bitness_t, char *);
565extern void print_timespec(struct tcb *, long);
566extern void sprint_timespec(char *, struct tcb *, long);
John Hughes58265892001-10-18 15:13:53 +0000567#ifdef HAVE_SIGINFO_T
Andreas Schwabe5355de2009-10-27 16:56:43 +0100568extern void printsiginfo(siginfo_t *, int);
John Hughes58265892001-10-18 15:13:53 +0000569#endif
Grant Edwards8a082772011-04-07 20:25:40 +0000570extern const char *getfdpath(struct tcb *, int);
Dmitry V. Levin31382132011-03-04 05:08:02 +0300571extern void printfd(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100572extern void printsock(struct tcb *, long, int);
573extern void print_sock_optmgmt(struct tcb *, long, int);
574extern void printrusage(struct tcb *, long);
575extern void printuid(const char *, unsigned long);
576extern int clearbpt(struct tcb *);
577extern int setbpt(struct tcb *);
578extern int sigishandled(struct tcb *, int);
579extern void printcall(struct tcb *);
580extern const char *signame(int);
581extern void print_sigset(struct tcb *, long, int);
582extern void printsignal(int);
583extern void printleader(struct tcb *);
584extern void printtrailer(void);
585extern void tabto(int);
586extern void call_summary(FILE *);
587extern void tprint_iov(struct tcb *, unsigned long, unsigned long);
588extern void tprint_open_modes(mode_t);
589extern const char *sprint_open_modes(mode_t);
590extern int is_restart_error(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000591
Grant Edwards8a082772011-04-07 20:25:40 +0000592extern int pathtrace_select(const char *);
593extern int pathtrace_match(struct tcb *);
594
Andreas Schwabe5355de2009-10-27 16:56:43 +0100595extern int change_syscall(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100596extern int internal_fork(struct tcb *);
597extern int internal_exec(struct tcb *);
598extern int internal_wait(struct tcb *, int);
599extern int internal_exit(struct tcb *);
Wang Chaoca8ab8d2010-11-12 17:26:08 +0800600#ifdef LINUX
601extern int handle_new_child(struct tcb *, int, int);
602#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000603
Andreas Schwabe5355de2009-10-27 16:56:43 +0100604extern const struct ioctlent *ioctl_lookup(long);
605extern const struct ioctlent *ioctl_next_match(const struct ioctlent *);
606extern int ioctl_decode(struct tcb *, long, long);
607extern int term_ioctl(struct tcb *, long, long);
608extern int sock_ioctl(struct tcb *, long, long);
609extern int proc_ioctl(struct tcb *, int, int);
610extern int stream_ioctl(struct tcb *, int, int);
Roland McGrathd83c50b2004-10-06 22:27:43 +0000611#ifdef LINUX
Andreas Schwabe5355de2009-10-27 16:56:43 +0100612extern int rtc_ioctl(struct tcb *, long, long);
613extern int scsi_ioctl(struct tcb *, long, long);
Dmitry V. Levin4ef6db42011-01-15 20:15:31 +0000614extern int block_ioctl(struct tcb *, long, long);
Roland McGrathd83c50b2004-10-06 22:27:43 +0000615#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000616
Andreas Schwabe5355de2009-10-27 16:56:43 +0100617extern int tv_nz(struct timeval *);
618extern int tv_cmp(struct timeval *, struct timeval *);
619extern double tv_float(struct timeval *);
620extern void tv_add(struct timeval *, struct timeval *, struct timeval *);
621extern void tv_sub(struct timeval *, struct timeval *, struct timeval *);
622extern void tv_mul(struct timeval *, struct timeval *, int);
623extern void tv_div(struct timeval *, struct timeval *, int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000624
625#ifdef SUNOS4
Andreas Schwabe5355de2009-10-27 16:56:43 +0100626extern int fixvfork(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000627#endif
Carmelo AMOROSOb9c52572010-12-13 08:48:28 +0100628#if !(defined(LINUX) && !defined(SPARC) && !defined(SPARC64) && !defined(IA64) \
629 && !defined(SH))
Andreas Schwabe5355de2009-10-27 16:56:43 +0100630extern long getrval2(struct tcb *);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000631#endif
Wichert Akkermanbf79f2e2000-09-01 21:03:06 +0000632#ifdef USE_PROCFS
Andreas Schwabe5355de2009-10-27 16:56:43 +0100633extern int proc_open(struct tcb *tcp, int attaching);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000634#endif
635
636#define umove(pid, addr, objp) \
637 umoven((pid), (addr), sizeof *(objp), (char *) (objp))
638
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000639#define printtv(tcp, addr) \
Roland McGrath6afc5652007-07-24 01:57:11 +0000640 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
641#define printtv_special(tcp, addr) \
642 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000643
Denys Vlasenko75422762011-05-27 14:36:01 +0200644extern void tprintf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000645
646#ifndef HAVE_STRERROR
Andreas Schwabe5355de2009-10-27 16:56:43 +0100647const char *strerror(int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000648#endif
649#ifndef HAVE_STRSIGNAL
Andreas Schwabe5355de2009-10-27 16:56:43 +0100650const char *strsignal(int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000651#endif
652
653extern int current_personality;
Dmitry V. Levin4ebb4e32006-12-13 17:08:08 +0000654extern const int personality_wordsize[];
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000655
656struct sysent {
657 int nargs;
658 int sys_flags;
659 int (*sys_func)();
Roland McGrathee36ce12004-09-04 03:53:10 +0000660 const char *sys_name;
Roland McGrath76989d72005-06-07 23:21:31 +0000661 long native_scno; /* Match against SYS_* constants. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000662};
663
Roland McGrathee36ce12004-09-04 03:53:10 +0000664extern const struct sysent *sysent;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000665extern int nsyscalls;
666
Roland McGrathee36ce12004-09-04 03:53:10 +0000667extern const char *const *errnoent;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000668extern int nerrnos;
669
670struct ioctlent {
Roland McGrathee36ce12004-09-04 03:53:10 +0000671 const char *doth;
672 const char *symbol;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000673 unsigned long code;
674};
675
Roland McGrathee36ce12004-09-04 03:53:10 +0000676extern const struct ioctlent *ioctlent;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000677extern int nioctlents;
Roland McGrathee36ce12004-09-04 03:53:10 +0000678
679extern const char *const *signalent;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000680extern int nsignals;
681
Roland McGrathee36ce12004-09-04 03:53:10 +0000682extern const struct ioctlent ioctlent0[];
683extern const int nioctlents0;
684extern const char *const signalent0[];
685extern const int nsignals0;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000686
687#if SUPPORTED_PERSONALITIES >= 2
Roland McGrathee36ce12004-09-04 03:53:10 +0000688extern const struct ioctlent ioctlent1[];
Michal Ludvig51d1ebc2004-09-07 14:06:03 +0000689extern const int nioctlents1;
Roland McGrathee36ce12004-09-04 03:53:10 +0000690extern const char *const signalent1[];
691extern const int nsignals1;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000692#endif /* SUPPORTED_PERSONALITIES >= 2 */
693
694#if SUPPORTED_PERSONALITIES >= 3
Roland McGrathee36ce12004-09-04 03:53:10 +0000695extern const struct ioctlent ioctlent2[];
696extern const int nioctlents2;
697extern const char *const signalent2[];
Michal Ludvig51d1ebc2004-09-07 14:06:03 +0000698extern const int nsignals2;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000699#endif /* SUPPORTED_PERSONALITIES >= 3 */
John Hughesbdf48f52001-03-06 15:08:09 +0000700
John Hughes0c79e012001-03-08 14:40:06 +0000701#if HAVE_LONG_LONG
John Hughes5a826b82001-03-07 13:21:24 +0000702
John Hughesbdf48f52001-03-06 15:08:09 +0000703/* _l refers to the lower numbered u_arg,
704 * _h refers to the higher numbered u_arg
705 */
John Hughes5a826b82001-03-07 13:21:24 +0000706
John Hughesb8a85a42001-03-28 08:05:27 +0000707#if HAVE_LITTLE_ENDIAN_LONG_LONG
John Hughes0c79e012001-03-08 14:40:06 +0000708#define LONG_LONG(_l,_h) \
Wichert Akkerman7ab47b62002-03-31 19:00:02 +0000709 ((long long)((unsigned long long)(unsigned)(_l) | ((unsigned long long)(_h)<<32)))
John Hughesbdf48f52001-03-06 15:08:09 +0000710#else
John Hughes0c79e012001-03-08 14:40:06 +0000711#define LONG_LONG(_l,_h) \
Wichert Akkerman7ab47b62002-03-31 19:00:02 +0000712 ((long long)((unsigned long long)(unsigned)(_h) | ((unsigned long long)(_l)<<32)))
John Hughesbdf48f52001-03-06 15:08:09 +0000713#endif
Andreas Schwabb5600fc2009-11-04 17:08:34 +0100714
715extern int printllval(struct tcb *, const char *, int);
John Hughesbdf48f52001-03-06 15:08:09 +0000716#endif
Wichert Akkerman7b3346b2001-10-09 23:47:38 +0000717
718#ifdef IA64
719extern long ia32;
720#endif
Michal Ludvig17f8fb32002-11-06 13:17:21 +0000721
722extern int not_failing_only;
Grant Edwards8a082772011-04-07 20:25:40 +0000723extern int show_fd_path;
724extern int tracing_paths;