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Wichert Akkerman76baf7c1999-02-19 00:21:36 +00001/*
2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000028 */
29
Roland McGrath795edb12005-02-02 04:44:57 +000030#ifdef HAVE_CONFIG_H
Denys Vlasenko329655a2012-02-25 02:42:32 +010031# include "config.h"
Roland McGrath795edb12005-02-02 04:44:57 +000032#endif
Roland McGrathe6d3a292003-01-14 09:46:18 +000033#ifdef _LARGEFILE64_SOURCE
34/* This is the macro everything checks before using foo64 names. */
35# ifndef _LFS64_LARGEFILE
36# define _LFS64_LARGEFILE 1
37# endif
38#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010039#ifdef MIPS
40# include <sgidefs.h>
41#endif
42#include <features.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010043#ifdef HAVE_STDBOOL_H
44# include <stdbool.h>
45#endif
46#include <stdint.h>
47#include <inttypes.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010048#include <sys/types.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010049#ifdef STDC_HEADERS
50# include <stddef.h>
51#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010052#include <unistd.h>
53#include <stdlib.h>
54#include <stdio.h>
55#include <ctype.h>
56#include <string.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010057#include <errno.h>
58#include <signal.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010059#include <time.h>
60#include <sys/time.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010061#include <sys/syscall.h>
Roland McGrathe6d3a292003-01-14 09:46:18 +000062
Denys Vlasenko29898142012-03-15 15:02:49 +010063#ifndef HAVE_STRERROR
64const char *strerror(int);
65#endif
Denys Vlasenko29898142012-03-15 15:02:49 +010066#ifndef HAVE_STPCPY
67/* Some libc have stpcpy, some don't. Sigh...
68 * Roll our private implementation...
69 */
70#undef stpcpy
71#define stpcpy strace_stpcpy
72extern char *stpcpy(char *dst, const char *src);
73#endif
74
75#if !defined __GNUC__
76# define __attribute__(x) /*nothing*/
77#endif
78
Denys Vlasenko513e9c22012-03-21 14:39:22 +010079#ifndef offsetof
80# define offsetof(type, member) \
81 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL))
82#endif
83
Denys Vlasenko29898142012-03-15 15:02:49 +010084#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
85
Denys Vlasenkoe4cc7c52012-03-23 11:29:01 +010086/* Glibc has an efficient macro for sigemptyset
87 * (it just does one or two assignments of 0 to internal vector of longs).
88 */
89#if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
90# define sigemptyset __sigemptyset
91#endif
92
Denys Vlasenkod9560c12011-08-19 17:41:28 +020093/* Configuration section */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000094#ifndef DEFAULT_STRLEN
Denys Vlasenko041b3ee2011-08-18 12:48:56 +020095/* default maximum # of bytes printed in `printstr', change with -s switch */
Denys Vlasenko329655a2012-02-25 02:42:32 +010096# define DEFAULT_STRLEN 32
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000097#endif
98#ifndef DEFAULT_ACOLUMN
Denys Vlasenko329655a2012-02-25 02:42:32 +010099# define DEFAULT_ACOLUMN 40 /* default alignment column for results */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000100#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100101/*
102 * Maximum number of args to a syscall.
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200103 *
Denys Vlasenkoaa925db2012-02-25 15:19:02 +0100104 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS!
Denys Vlasenko44142a72011-08-23 18:04:25 +0200105 * linux/<ARCH>/syscallent.h: all have nargs <= 6.
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200106 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000107#ifndef MAX_ARGS
Denys Vlasenko329655a2012-02-25 02:42:32 +0100108# define MAX_ARGS 6
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000109#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100110/* default sorting method for call profiling */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000111#ifndef DEFAULT_SORTBY
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100112# define DEFAULT_SORTBY "time"
John Hughes58265892001-10-18 15:13:53 +0000113#endif
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100114/*
115 * Experimental code using PTRACE_SEIZE can be enabled here.
Denys Vlasenko9472a272013-02-12 11:43:46 +0100116 * This needs Linux kernel 3.4.x or later to work.
117 */
118#define USE_SEIZE 1
Denys Vlasenko05f32512013-02-26 12:00:34 +0100119/* To force NOMMU build, set to 1 */
Denys Vlasenko5c9d8f42013-02-19 15:30:12 +0100120#define NOMMU_SYSTEM 0
121
Denys Vlasenko9472a272013-02-12 11:43:46 +0100122
Denys Vlasenko329655a2012-02-25 02:42:32 +0100123#if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI32
124# define LINUX_MIPSO32
125#endif
126#if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_NABI32
127# define LINUX_MIPSN32
Denys Vlasenko329655a2012-02-25 02:42:32 +0100128#endif
129#if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI64
130# define LINUX_MIPSN64
Denys Vlasenko329655a2012-02-25 02:42:32 +0100131#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000132
Denys Vlasenko9472a272013-02-12 11:43:46 +0100133#if (defined(SPARC) || defined(SPARC64) \
134 || defined(X86_64) \
135 || defined(ARM) || defined(AARCH64) \
136 || defined(AVR32) \
Christian Svensson492f81f2013-02-14 13:26:27 +0100137 || defined(OR1K) \
James Hogan5f999a82013-02-22 14:44:10 +0000138 || defined(METAG) \
Denys Vlasenko9472a272013-02-12 11:43:46 +0100139 ) && defined(__GLIBC__)
Denys Vlasenko329655a2012-02-25 02:42:32 +0100140# include <sys/ptrace.h>
141#else
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000142/* Work around awkward prototype in ptrace.h. */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100143# define ptrace xptrace
144# include <sys/ptrace.h>
145# undef ptrace
146# ifdef POWERPC
147# define __KERNEL__
148# include <asm/ptrace.h>
149# undef __KERNEL__
Denys Vlasenko77770bb2011-08-26 19:25:09 +0200150# endif
Denys Vlasenko329655a2012-02-25 02:42:32 +0100151extern long ptrace(int, int, char *, long);
152#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000153
Denys Vlasenko2550d482013-02-15 21:04:28 +0100154#if defined(TILE)
155# include <asm/ptrace.h> /* struct pt_regs */
156#endif
157
Denys Vlasenko9472a272013-02-12 11:43:46 +0100158#if !HAVE_DECL_PTRACE_SETOPTIONS
159# define PTRACE_SETOPTIONS 0x4200
160#endif
161#if !HAVE_DECL_PTRACE_GETEVENTMSG
162# define PTRACE_GETEVENTMSG 0x4201
163#endif
164#if !HAVE_DECL_PTRACE_GETSIGINFO
165# define PTRACE_GETSIGINFO 0x4202
166#endif
167
168#if !HAVE_DECL_PTRACE_O_TRACESYSGOOD
169# define PTRACE_O_TRACESYSGOOD 0x00000001
170#endif
171#if !HAVE_DECL_PTRACE_O_TRACEFORK
172# define PTRACE_O_TRACEFORK 0x00000002
173#endif
174#if !HAVE_DECL_PTRACE_O_TRACEVFORK
175# define PTRACE_O_TRACEVFORK 0x00000004
176#endif
177#if !HAVE_DECL_PTRACE_O_TRACECLONE
178# define PTRACE_O_TRACECLONE 0x00000008
179#endif
180#if !HAVE_DECL_PTRACE_O_TRACEEXEC
181# define PTRACE_O_TRACEEXEC 0x00000010
182#endif
183#if !HAVE_DECL_PTRACE_O_TRACEEXIT
184# define PTRACE_O_TRACEEXIT 0x00000040
185#endif
186
187#if !HAVE_DECL_PTRACE_EVENT_FORK
188# define PTRACE_EVENT_FORK 1
189#endif
190#if !HAVE_DECL_PTRACE_EVENT_VFORK
191# define PTRACE_EVENT_VFORK 2
192#endif
193#if !HAVE_DECL_PTRACE_EVENT_CLONE
194# define PTRACE_EVENT_CLONE 3
195#endif
196#if !HAVE_DECL_PTRACE_EVENT_EXEC
197# define PTRACE_EVENT_EXEC 4
198#endif
199#if !HAVE_DECL_PTRACE_EVENT_VFORK_DONE
200# define PTRACE_EVENT_VFORK_DONE 5
201#endif
202#if !HAVE_DECL_PTRACE_EVENT_EXIT
203# define PTRACE_EVENT_EXIT 6
204#endif
205
Wichert Akkermanb859bea1999-04-18 22:50:50 +0000206#if !defined(__GLIBC__)
Denys Vlasenko329655a2012-02-25 02:42:32 +0100207# define PTRACE_PEEKUSER PTRACE_PEEKUSR
208# define PTRACE_POKEUSER PTRACE_POKEUSR
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000209#endif
Denys Vlasenko9472a272013-02-12 11:43:46 +0100210
Denys Vlasenko5c9d8f42013-02-19 15:30:12 +0100211#if USE_SEIZE
Denys Vlasenko9472a272013-02-12 11:43:46 +0100212# undef PTRACE_SEIZE
213# define PTRACE_SEIZE 0x4206
214# undef PTRACE_INTERRUPT
215# define PTRACE_INTERRUPT 0x4207
216# undef PTRACE_LISTEN
217# define PTRACE_LISTEN 0x4208
218# undef PTRACE_EVENT_STOP
219# define PTRACE_EVENT_STOP 128
220#endif
221
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000222#ifdef ALPHA
Denys Vlasenko329655a2012-02-25 02:42:32 +0100223# define REG_R0 0
224# define REG_A0 16
225# define REG_A3 19
226# define REG_FP 30
227# define REG_PC 64
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000228#endif /* ALPHA */
Wichert Akkermanf90da011999-10-31 21:15:38 +0000229#ifdef MIPS
Denys Vlasenko329655a2012-02-25 02:42:32 +0100230# define REG_V0 2
231# define REG_A0 4
232# define REG_A3 7
233# define REG_SP 29
234# define REG_EPC 64
Wichert Akkermanf90da011999-10-31 21:15:38 +0000235#endif /* MIPS */
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000236#ifdef HPPA
Denys Vlasenko329655a2012-02-25 02:42:32 +0100237# define PT_GR20 (20*4)
238# define PT_GR26 (26*4)
239# define PT_GR28 (28*4)
240# define PT_IAOQ0 (106*4)
241# define PT_IAOQ1 (107*4)
Wichert Akkermanc1652e22001-03-27 12:17:16 +0000242#endif /* HPPA */
Roland McGrathf5a47772003-06-26 22:40:42 +0000243#ifdef SH64
244 /* SH64 Linux - this code assumes the following kernel API for system calls:
Roland McGrathe1e584b2003-06-02 19:18:58 +0000245 PC Offset 0
246 System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
247 where n = no. of parameters.
248 Other regs Offset 24+
249
250 On entry: R2-7 = parameters 1-6 (as many as necessary)
251 On return: R9 = result. */
252
253 /* Offset for peeks of registers */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100254# define REG_OFFSET (24)
255# define REG_GENERAL(x) (8*(x)+REG_OFFSET)
256# define REG_PC (0*8)
257# define REG_SYSCALL (2*8)
Roland McGrathf5a47772003-06-26 22:40:42 +0000258#endif /* SH64 */
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000259#ifdef AARCH64
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000260struct arm_pt_regs {
Denys Vlasenko28ac68f2013-02-08 12:38:51 +0100261 int uregs[18];
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000262};
Denys Vlasenko28ac68f2013-02-08 12:38:51 +0100263# define ARM_cpsr uregs[16]
264# define ARM_pc uregs[15]
265# define ARM_lr uregs[14]
266# define ARM_sp uregs[13]
267# define ARM_ip uregs[12]
268# define ARM_fp uregs[11]
269# define ARM_r10 uregs[10]
270# define ARM_r9 uregs[9]
271# define ARM_r8 uregs[8]
272# define ARM_r7 uregs[7]
273# define ARM_r6 uregs[6]
274# define ARM_r5 uregs[5]
275# define ARM_r4 uregs[4]
276# define ARM_r3 uregs[3]
277# define ARM_r2 uregs[2]
278# define ARM_r1 uregs[1]
279# define ARM_r0 uregs[0]
280# define ARM_ORIG_r0 uregs[17]
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000281#endif /* AARCH64 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000282
Denys Vlasenko9472a272013-02-12 11:43:46 +0100283#if defined(SPARC) || defined(SPARC64)
Mike Frysinger8566c502009-10-12 11:05:14 -0400284/* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
285 * by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
Denys Vlasenko329655a2012-02-25 02:42:32 +0100286# define U_REG_G1 0
287# define U_REG_O0 7
288# define U_REG_O1 8
289# define PERSONALITY0_WORDSIZE 4
290# define PERSONALITY1_WORDSIZE 4
Denys Vlasenko329655a2012-02-25 02:42:32 +0100291# if defined(SPARC64)
292# include <asm/psrcompat.h>
293# define SUPPORTED_PERSONALITIES 3
294# define PERSONALITY2_WORDSIZE 8
295# else
296# include <asm/psr.h>
297# define SUPPORTED_PERSONALITIES 2
298# endif /* SPARC64 */
Denys Vlasenko9472a272013-02-12 11:43:46 +0100299#endif /* SPARC[64] */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000300
Michal Ludvig0e035502002-09-23 15:41:01 +0000301#ifdef X86_64
H.J. Lu35be5812012-04-16 13:00:01 +0200302# define SUPPORTED_PERSONALITIES 3
Denys Vlasenko329655a2012-02-25 02:42:32 +0100303# define PERSONALITY0_WORDSIZE 8
304# define PERSONALITY1_WORDSIZE 4
H.J. Lu35be5812012-04-16 13:00:01 +0200305# define PERSONALITY2_WORDSIZE 4
Roland McGrathee9d4352002-12-18 04:16:10 +0000306#endif
307
H.J. Lu085e4282012-04-17 11:05:04 -0700308#ifdef X32
H.J. Lu085e4282012-04-17 11:05:04 -0700309# define SUPPORTED_PERSONALITIES 2
310# define PERSONALITY0_WORDSIZE 4
311# define PERSONALITY1_WORDSIZE 4
312#endif
313
Roland McGrath56703312008-05-20 01:35:55 +0000314#ifdef ARM
Denys Vlasenko7270de52013-02-21 15:46:34 +0100315/* one personality */
Roland McGrath56703312008-05-20 01:35:55 +0000316#endif
317
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000318#ifdef AARCH64
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000319/* The existing ARM personality, then AArch64 */
320# define SUPPORTED_PERSONALITIES 2
321# define PERSONALITY0_WORDSIZE 4
322# define PERSONALITY1_WORDSIZE 8
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000323# define DEFAULT_PERSONALITY 1
324#endif
325
Andreas Schwabd69fa492010-07-12 21:39:57 +0200326#ifdef POWERPC64
Denys Vlasenko329655a2012-02-25 02:42:32 +0100327# define SUPPORTED_PERSONALITIES 2
328# define PERSONALITY0_WORDSIZE 8
329# define PERSONALITY1_WORDSIZE 4
Andreas Schwabd69fa492010-07-12 21:39:57 +0200330#endif
331
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100332#ifdef TILE
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100333# define SUPPORTED_PERSONALITIES 2
334# define PERSONALITY0_WORDSIZE 8
335# define PERSONALITY1_WORDSIZE 4
336# ifdef __tilepro__
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100337# define DEFAULT_PERSONALITY 1
338# endif
339#endif
340
Denys Vlasenko9472a272013-02-12 11:43:46 +0100341#ifndef SUPPORTED_PERSONALITIES
342# define SUPPORTED_PERSONALITIES 1
343#endif
344#ifndef DEFAULT_PERSONALITY
345# define DEFAULT_PERSONALITY 0
346#endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100347#ifndef PERSONALITY0_WORDSIZE
Denys Vlasenkoc52826c2012-05-15 14:28:56 +0200348# define PERSONALITY0_WORDSIZE (int)(sizeof(long))
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100349#endif
350
Denys Vlasenko329655a2012-02-25 02:42:32 +0100351#if defined(I386)
Denys Vlasenko2550d482013-02-15 21:04:28 +0100352extern struct user_regs_struct i386_regs;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100353#elif defined(IA64)
Denys Vlasenko29898142012-03-15 15:02:49 +0100354extern long ia32;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100355#elif defined(SPARC) || defined(SPARC64)
Denys Vlasenko48e4c1b2013-02-16 08:23:40 +0100356extern struct pt_regs sparc_regs;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100357#elif defined(ARM)
Denys Vlasenko401374e2013-02-06 18:24:39 +0100358extern struct pt_regs arm_regs;
Denys Vlasenko4bfb1982013-02-20 12:38:14 +0100359#elif defined(TILE)
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100360extern struct pt_regs tile_regs;
361#endif
Denys Vlasenkob11322f2012-01-10 16:40:35 +0100362
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100363typedef struct sysent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100364 unsigned nargs;
365 int sys_flags;
366 int (*sys_func)();
367 const char *sys_name;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100368} struct_sysent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100369
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100370typedef struct ioctlent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100371 const char *doth;
372 const char *symbol;
373 unsigned long code;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100374} struct_ioctlent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100375
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000376/* Trace Control Block */
377struct tcb {
Denys Vlasenkod9ec1412011-08-20 01:39:05 +0200378 int flags; /* See below for TCB_ values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000379 int pid; /* Process Id of this entry */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100380 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200381 int u_error; /* Error code */
382 long scno; /* System call number */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000383 long u_arg[MAX_ARGS]; /* System call arguments */
H.J. Lu35be5812012-04-16 13:00:01 +0200384#if defined(LINUX_MIPSN32) || defined(X32)
Denys Vlasenko9472a272013-02-12 11:43:46 +0100385 long long ext_arg[MAX_ARGS];
H.J. Ludd0130b2012-04-16 12:16:45 +0200386 long long u_lrval; /* long long return value */
387#endif
Denys Vlasenko9472a272013-02-12 11:43:46 +0100388 long u_rval; /* Return value */
Dmitry V. Levina5a839a2011-12-23 00:50:49 +0000389#if SUPPORTED_PERSONALITIES > 1
390 int currpers; /* Personality at the time of scno update */
391#endif
Andreas Schwabccdff482009-10-27 16:27:13 +0100392 int curcol; /* Output column for this process */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200393 FILE *outf; /* Output file for this process */
Wichert Akkerman43a74822000-06-27 17:33:32 +0000394 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100395 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000396 struct timeval stime; /* System time usage as of last process wait */
397 struct timeval dtime; /* Delta for system time usage */
398 struct timeval etime; /* Syscall entry time */
Denys Vlasenkoa61a72e2012-03-17 12:41:27 +0100399 /* Support for tracing forked processes: */
400 long inst[2]; /* Saved clone args (badly named) */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000401};
402
403/* TCB flags */
Denys Vlasenkof88837a2011-09-05 14:05:46 +0200404#define TCB_INUSE 00001 /* This table entry is in use */
Denys Vlasenko68269aa2012-03-15 13:02:31 +0100405/* We have attached to this process, but did not see it stopping yet */
Denys Vlasenkof88837a2011-09-05 14:05:46 +0200406#define TCB_STARTUP 00002
407#define TCB_IGNORE_ONE_SIGSTOP 00004 /* Next SIGSTOP is to be ignored */
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200408/*
409 * Are we in system call entry or in syscall exit?
410 *
411 * This bit is set after all syscall entry processing is done.
412 * Therefore, this bit will be set when next ptrace stop occurs,
413 * which should be syscall exit stop. Other stops which are possible
414 * directly after syscall entry (death, ptrace event stop)
415 * are simpler and handled without calling trace_syscall(), therefore
416 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
417 * are limited to trace(), this condition is never observed in trace_syscall()
418 * and below.
419 * The bit is cleared after all syscall exit processing is done.
420 * User-generated SIGTRAPs and post-execve SIGTRAP make it necessary
421 * to be very careful and NOT set TCB_INSYSCALL bit when they are encountered.
422 * TCB_WAITEXECVE bit is used for this purpose (see below).
423 *
424 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
425 */
Denys Vlasenkof88837a2011-09-05 14:05:46 +0200426#define TCB_INSYSCALL 00010
Denys Vlasenko75fe85c2012-03-09 15:15:24 +0100427#define TCB_ATTACHED 00020 /* It is attached already */
428/* Are we PROG from "strace PROG [ARGS]" invocation? */
Denys Vlasenko513e9c22012-03-21 14:39:22 +0100429#define TCB_STRACE_CHILD 0040
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000430#define TCB_BPTSET 00100 /* "Breakpoint" set after fork(2) */
Denys Vlasenko513e9c22012-03-21 14:39:22 +0100431#define TCB_REPRINT 00200 /* We should reprint this syscall on exit */
432#define TCB_FILTERED 00400 /* This system call has been filtered out */
Roland McGratheb9e2e82009-06-02 16:49:22 -0700433/* x86 does not need TCB_WAITEXECVE.
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100434 * It can detect post-execve SIGTRAP by looking at eax/rax.
435 * See "not a syscall entry (eax = %ld)\n" message.
436 *
437 * Note! On new kernels (about 2.5.46+), we use PTRACE_O_TRACEEXEC, which
438 * suppresses post-execve SIGTRAP. If you are adding a new arch which is
439 * only supported by newer kernels, you most likely don't need to define
440 * TCB_WAITEXECVE!
Denys Vlasenkobc161ec2009-01-02 18:02:45 +0000441 */
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100442#if defined(ALPHA) \
443 || defined(SPARC) || defined(SPARC64) \
444 || defined(POWERPC) \
445 || defined(IA64) \
446 || defined(HPPA) \
447 || defined(SH) || defined(SH64) \
448 || defined(S390) || defined(S390X) \
Denys Vlasenkobf357fc2013-02-12 13:06:51 +0100449 || defined(ARM) \
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100450 || defined(MIPS)
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200451/* This tracee has entered into execve syscall. Expect post-execve SIGTRAP
452 * to happen. (When it is detected, tracee is continued and this bit is cleared.)
453 */
Denys Vlasenko513e9c22012-03-21 14:39:22 +0100454# define TCB_WAITEXECVE 01000
Denys Vlasenko329655a2012-02-25 02:42:32 +0100455#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000456
457/* qualifier flags */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100458#define QUAL_TRACE 0x001 /* this system call should be traced */
459#define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
460#define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
461#define QUAL_RAW 0x008 /* print all args in hex for this syscall */
462#define QUAL_SIGNAL 0x010 /* report events with this signal */
Denys Vlasenkoc1540fe2013-02-21 16:17:08 +0100463#define QUAL_READ 0x020 /* dump data read on this file descriptor */
464#define QUAL_WRITE 0x040 /* dump data written to this file descriptor */
Denys Vlasenkoa585c9d2013-02-21 16:15:43 +0100465typedef uint8_t qualbits_t;
Denys Vlasenkoc1540fe2013-02-21 16:17:08 +0100466#define UNDEFINED_SCNO 0x100 /* Used only in tcp->qual_flg */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100467
468#define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000469
470#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
471#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
472#define syserror(tcp) ((tcp)->u_error != 0)
Denys Vlasenko40d63b92013-02-22 13:23:38 +0100473#define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
474#define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
Grant Edwards8a082772011-04-07 20:25:40 +0000475#define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000476
477struct xlat {
478 int val;
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000479 const char *str;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000480};
481
Denys Vlasenkof535b542009-01-13 18:30:55 +0000482extern const struct xlat open_mode_flags[];
483extern const struct xlat addrfams[];
484extern const struct xlat struct_user_offsets[];
485extern const struct xlat open_access_modes[];
Denys Vlasenko86738a22013-02-17 14:31:55 +0100486extern const struct xlat whence_codes[];
Denys Vlasenkof535b542009-01-13 18:30:55 +0000487
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000488/* Format of syscall return values */
489#define RVAL_DECIMAL 000 /* decimal format */
490#define RVAL_HEX 001 /* hex format */
491#define RVAL_OCTAL 002 /* octal format */
492#define RVAL_UDECIMAL 003 /* unsigned decimal format */
H.J. Ludd0130b2012-04-16 12:16:45 +0200493#if defined(LINUX_MIPSN32) || defined(X32)
494# if 0 /* unused so far */
495# define RVAL_LDECIMAL 004 /* long decimal format */
496# define RVAL_LHEX 005 /* long hex format */
497# define RVAL_LOCTAL 006 /* long octal format */
498# endif
499# define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
500#endif
501#define RVAL_MASK 007 /* mask for these values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000502
503#define RVAL_STR 010 /* Print `auxstr' field after return val */
504#define RVAL_NONE 020 /* Print nothing */
505
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000506#define TRACE_FILE 001 /* Trace file-related syscalls. */
507#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
508#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
509#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
510#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
Roland McGrath2fe7b132005-07-05 03:25:35 +0000511#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
Namhyung Kim96792962012-10-24 11:41:57 +0900512#define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
513#define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000514
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000515typedef enum {
516 CFLAG_NONE = 0,
517 CFLAG_ONLY_STATS,
518 CFLAG_BOTH
519} cflag_t;
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000520extern cflag_t cflag;
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100521extern bool debug_flag;
522extern bool Tflag;
523extern bool qflag;
524extern bool not_failing_only;
525extern bool show_fd_path;
Denys Vlasenko38cfe7c2013-03-05 16:01:53 +0100526/* are we filtering traces based on paths? */
527extern const char **paths_selected;
528#define tracing_paths (paths_selected != NULL)
Denys Vlasenko8d4ca0c2013-02-06 13:18:42 +0100529extern bool need_fork_exec_workarounds;
Denys Vlasenkoeec8d5d2013-02-14 03:29:48 +0100530extern unsigned xflag;
531extern unsigned followfork;
532extern unsigned ptrace_setoptions;
533extern unsigned max_strlen;
534extern unsigned os_release;
535#undef KERNEL_VERSION
536#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100537
Dmitry V. Levina7945a32006-12-13 17:10:11 +0000538enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
539
Denys Vlasenko75422762011-05-27 14:36:01 +0200540void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
541void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
542void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
543void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
Denys Vlasenko1d46ba52011-08-31 14:00:02 +0200544void die_out_of_memory(void) __attribute__ ((noreturn));
Denys Vlasenko75422762011-05-27 14:36:01 +0200545
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200546#ifdef USE_CUSTOM_PRINTF
547/*
548 * Speed-optimized vfprintf implementation.
549 * See comment in vsprintf.c for allowed formats.
550 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
551 *
552 * It results in strace using about 5% less CPU in user space
553 * (compared to glibc version).
554 * But strace spends a lot of time in kernel space,
555 * so overall it does not appear to be a significant win.
556 * Thus disabled by default.
557 */
558int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
559#else
560# define strace_vfprintf vfprintf
561#endif
562
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000563extern void set_sortby(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100564extern void set_overhead(int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000565extern void qualify(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100566extern int trace_syscall(struct tcb *);
Denys Vlasenkoc95a88f2011-08-21 17:47:40 +0200567extern void count_syscall(struct tcb *, struct timeval *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100568extern void call_summary(FILE *);
569
Denys Vlasenkoce7d9532013-02-05 16:36:13 +0100570#if defined(AVR32) \
571 || defined(I386) \
572 || defined(X86_64) || defined(X32) \
573 || defined(AARCH64) \
574 || defined(ARM) \
Chris Metcalfaf8dc6b2013-02-05 13:02:42 -0500575 || defined(SPARC) || defined(SPARC64) \
Christian Svensson492f81f2013-02-14 13:26:27 +0100576 || defined(TILE) \
James Hogan5f999a82013-02-22 14:44:10 +0000577 || defined(OR1K) \
578 || defined(METAG)
Denys Vlasenkoce7d9532013-02-05 16:36:13 +0100579extern long get_regs_error;
580# define clear_regs() (get_regs_error = -1)
581extern void get_regs(pid_t pid);
582#else
583# define get_regs_error 0
584# define clear_regs() ((void)0)
585# define get_regs(pid) ((void)0)
586#endif
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100587extern int umoven(struct tcb *, long, int, char *);
588#define umove(pid, addr, objp) \
589 umoven((pid), (addr), sizeof(*(objp)), (char *) (objp))
590extern int umovestr(struct tcb *, long, int, char *);
591extern int upeek(struct tcb *, long, long *);
592#if defined(SPARC) || defined(SPARC64) || defined(IA64) || defined(SH)
593extern long getrval2(struct tcb *);
594#endif
595/*
596 * On Linux, "setbpt" is a misnomer: we don't set a breakpoint
597 * (IOW: no poking in user's text segment),
598 * instead we change fork/vfork/clone into clone(CLONE_PTRACE).
599 * On newer kernels, we use PTRACE_O_TRACECLONE/TRACE[V]FORK instead.
600 */
601extern int setbpt(struct tcb *);
602extern int clearbpt(struct tcb *);
603
604extern const char *signame(int);
605extern int is_restart_error(struct tcb *);
Denys Vlasenko7239dbc2013-03-05 15:46:34 +0100606extern void pathtrace_select(const char *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100607extern int pathtrace_match(struct tcb *);
608extern const char *getfdpath(struct tcb *, int);
609
610extern const char *xlookup(const struct xlat *, int);
611
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000612extern int string_to_uint(const char *str);
Denys Vlasenkob5d43b82012-04-28 14:58:35 +0200613extern int string_quote(const char *, char *, long, int);
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000614
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100615/* a refers to the lower numbered u_arg,
616 * b refers to the higher numbered u_arg
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100617 */
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100618#if HAVE_LITTLE_ENDIAN_LONG_LONG
619# define LONG_LONG(a,b) \
620 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
621#else
622# define LONG_LONG(a,b) \
623 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100624#endif
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100625extern int printllval(struct tcb *, const char *, int);
626
Andreas Schwabe5355de2009-10-27 16:56:43 +0100627extern void printxval(const struct xlat *, int, const char *);
628extern int printargs(struct tcb *);
Denys Vlasenko72879c62012-02-27 14:18:02 +0100629extern int printargs_lu(struct tcb *);
630extern int printargs_ld(struct tcb *);
Denys Vlasenko4924dbd2011-08-19 18:06:46 +0200631extern void addflags(const struct xlat *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100632extern int printflags(const struct xlat *, int, const char *);
633extern const char *sprintflags(const char *, const struct xlat *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100634extern void dumpiov(struct tcb *, int, long);
635extern void dumpstr(struct tcb *, long, int);
Denys Vlasenkob5d43b82012-04-28 14:58:35 +0200636extern void printstr(struct tcb *, long, long);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000637extern void printnum(struct tcb *, long, const char *);
638extern void printnum_int(struct tcb *, long, const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100639extern void printpath(struct tcb *, long);
640extern void printpathn(struct tcb *, long, int);
Denys Vlasenkoa1d541e2012-01-20 11:04:04 +0100641#define TIMESPEC_TEXT_BUFSIZE (sizeof(long)*3 * 2 + sizeof("{%u, %u}"))
642#define TIMEVAL_TEXT_BUFSIZE TIMESPEC_TEXT_BUFSIZE
Andreas Schwabe5355de2009-10-27 16:56:43 +0100643extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100644#define printtv(tcp, addr) \
645 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
646#define printtv_special(tcp, addr) \
647 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
Denys Vlasenkoa1d541e2012-01-20 11:04:04 +0100648extern char *sprinttv(char *, struct tcb *, long, enum bitness_t, int special);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100649extern void print_timespec(struct tcb *, long);
650extern void sprint_timespec(char *, struct tcb *, long);
John Hughes58265892001-10-18 15:13:53 +0000651#ifdef HAVE_SIGINFO_T
Andreas Schwabe5355de2009-10-27 16:56:43 +0100652extern void printsiginfo(siginfo_t *, int);
Denys Vlasenkod4d3ede2013-02-13 16:31:32 +0100653extern void printsiginfo_at(struct tcb *tcp, long addr);
John Hughes58265892001-10-18 15:13:53 +0000654#endif
Dmitry V. Levin31382132011-03-04 05:08:02 +0300655extern void printfd(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100656extern void printsock(struct tcb *, long, int);
657extern void print_sock_optmgmt(struct tcb *, long, int);
658extern void printrusage(struct tcb *, long);
Sergei Trofimovich02a08fb2011-08-11 18:04:53 +0300659#ifdef ALPHA
660extern void printrusage32(struct tcb *, long);
661#endif
Andreas Schwabe5355de2009-10-27 16:56:43 +0100662extern void printuid(const char *, unsigned long);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100663extern void printcall(struct tcb *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100664extern void print_sigset(struct tcb *, long, int);
665extern void printsignal(int);
Dmitry V. Levin88849682011-06-13 22:58:44 +0000666extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
Denys Vlasenkoe0bc2222012-04-28 14:26:18 +0200667extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100668extern void tprint_open_modes(mode_t);
669extern const char *sprint_open_modes(mode_t);
Mike Frysinger0cbed352012-04-04 22:22:01 -0400670extern void print_loff_t(struct tcb *, long);
Grant Edwards8a082772011-04-07 20:25:40 +0000671
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100672extern const struct_ioctlent *ioctl_lookup(long);
673extern const struct_ioctlent *ioctl_next_match(const struct_ioctlent *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100674extern int ioctl_decode(struct tcb *, long, long);
675extern int term_ioctl(struct tcb *, long, long);
676extern int sock_ioctl(struct tcb *, long, long);
677extern int proc_ioctl(struct tcb *, int, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100678extern int rtc_ioctl(struct tcb *, long, long);
679extern int scsi_ioctl(struct tcb *, long, long);
Dmitry V. Levin4ef6db42011-01-15 20:15:31 +0000680extern int block_ioctl(struct tcb *, long, long);
Mike Frysinger0cbed352012-04-04 22:22:01 -0400681extern int mtd_ioctl(struct tcb *, long, long);
Mike Frysingerebee04c2012-04-17 22:19:31 -0400682extern int loop_ioctl(struct tcb *, long, long);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000683
Andreas Schwabe5355de2009-10-27 16:56:43 +0100684extern int tv_nz(struct timeval *);
685extern int tv_cmp(struct timeval *, struct timeval *);
686extern double tv_float(struct timeval *);
687extern void tv_add(struct timeval *, struct timeval *, struct timeval *);
688extern void tv_sub(struct timeval *, struct timeval *, struct timeval *);
689extern void tv_mul(struct timeval *, struct timeval *, int);
690extern void tv_div(struct timeval *, struct timeval *, int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000691
Denys Vlasenko7de265d2012-03-13 11:44:31 +0100692/* Strace log generation machinery.
693 *
694 * printing_tcp: tcb which has incomplete line being printed right now.
695 * NULL if last line has been completed ('\n'-terminated).
696 * printleader(tcp) examines it, finishes incomplete line if needed,
697 * the sets it to tcp.
698 * line_ended() clears printing_tcp and resets ->curcol = 0.
699 * tcp->curcol == 0 check is also used to detect completeness
700 * of last line, since in -ff mode just checking printing_tcp for NULL
701 * is not enough.
702 *
703 * If you change this code, test log generation in both -f and -ff modes
704 * using:
705 * strace -oLOG -f[f] test/threaded_execve
706 * strace -oLOG -f[f] test/sigkill_rain
707 * strace -oLOG -f[f] -p "`pidof web_browser`"
708 */
709extern struct tcb *printing_tcp;
710extern void printleader(struct tcb *);
711extern void line_ended(void);
712extern void tabto(void);
713extern void tprintf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
714extern void tprints(const char *str);
715
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100716#if SUPPORTED_PERSONALITIES > 1
717extern void set_personality(int personality);
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100718extern unsigned current_personality;
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100719#else
720# define set_personality(personality) ((void)0)
721# define current_personality 0
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100722#endif
723
724#if SUPPORTED_PERSONALITIES == 1
725# define current_wordsize PERSONALITY0_WORDSIZE
726#else
727# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
728# define current_wordsize PERSONALITY0_WORDSIZE
729# else
730extern unsigned current_wordsize;
731# endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100732#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000733
Denys Vlasenkoe015d2d2013-02-15 14:58:52 +0100734/* In many, many places we play fast and loose and use
735 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
736 * We probably need to use widen_to_long() instead:
737 */
738#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
739# define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
740#else
741# define widen_to_long(v) ((long)(v))
742#endif
743
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100744extern const struct_sysent sysent0[];
745extern const char *const errnoent0[];
746extern const char *const signalent0[];
747extern const struct_ioctlent ioctlent0[];
748extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
749#define qual_flags (qual_vec[current_personality])
750#if SUPPORTED_PERSONALITIES > 1
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100751extern const struct_sysent *sysent;
Denys Vlasenko39fca622011-08-20 02:12:33 +0200752extern const char *const *errnoent;
Roland McGrathee36ce12004-09-04 03:53:10 +0000753extern const char *const *signalent;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100754extern const struct_ioctlent *ioctlent;
755#else
756# define sysent sysent0
757# define errnoent errnoent0
758# define signalent signalent0
759# define ioctlent ioctlent0
760#endif
761extern unsigned nsyscalls;
762extern unsigned nerrnos;
Denys Vlasenkoafc64032011-08-23 13:29:01 +0200763extern unsigned nsignals;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100764extern unsigned nioctlents;
765extern unsigned num_quals;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000766
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100767/*
768 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
769 */
Denys Vlasenko5721cdb2013-02-16 13:22:38 +0100770#define SCNO_IS_VALID(scno) \
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100771 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
772
773/* Only ensures that sysent[scno] isn't out of range */
774#define SCNO_IN_RANGE(scno) \
775 ((unsigned long)(scno) < nsyscalls)