blob: 62e6414d090cdd47c16f0eee395e9f35e29b7720 [file] [log] [blame]
Wichert Akkerman76baf7c1999-02-19 00:21:36 +00001/*
2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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
Dmitry V. Levin2690fad2013-05-07 08:03:41 +000033
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010034#include <features.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010035#ifdef HAVE_STDBOOL_H
36# include <stdbool.h>
37#endif
38#include <stdint.h>
39#include <inttypes.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010040#include <sys/types.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010041#ifdef STDC_HEADERS
42# include <stddef.h>
43#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010044#include <unistd.h>
45#include <stdlib.h>
46#include <stdio.h>
Denys Vlasenko5198ed42013-03-06 23:44:23 +010047/* Open-coding isprint(ch) et al proved more efficient than calling
48 * generalized libc interface. We don't *want* to do non-ASCII anyway.
49 */
50/* #include <ctype.h> */
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010051#include <string.h>
Denys Vlasenkoa6d91de2012-03-16 12:02:22 +010052#include <errno.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010053#include <time.h>
54#include <sys/time.h>
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +010055#include <sys/syscall.h>
Roland McGrathe6d3a292003-01-14 09:46:18 +000056
Elvira Khabirova09294222015-08-04 01:47:02 +030057#include "mpers_type.h"
Dmitry V. Levinf32126b2015-12-31 14:19:41 +000058#include "gcc_compat.h"
Elvira Khabirova09294222015-08-04 01:47:02 +030059
Denys Vlasenko29898142012-03-15 15:02:49 +010060#ifndef HAVE_STRERROR
61const char *strerror(int);
62#endif
Denys Vlasenko29898142012-03-15 15:02:49 +010063#ifndef HAVE_STPCPY
64/* Some libc have stpcpy, some don't. Sigh...
65 * Roll our private implementation...
66 */
67#undef stpcpy
68#define stpcpy strace_stpcpy
69extern char *stpcpy(char *dst, const char *src);
70#endif
71
Denys Vlasenko513e9c22012-03-21 14:39:22 +010072#ifndef offsetof
73# define offsetof(type, member) \
74 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL))
75#endif
76
Denys Vlasenko29898142012-03-15 15:02:49 +010077#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
78
Mike Frysingerd648f292013-05-01 23:35:30 -040079/* macros */
80#ifndef MAX
81# define MAX(a, b) (((a) > (b)) ? (a) : (b))
82#endif
83#ifndef MIN
84# define MIN(a, b) (((a) < (b)) ? (a) : (b))
85#endif
86#define CLAMP(val, min, max) MIN(MAX(min, val), max)
87
Denys Vlasenkoe4cc7c52012-03-23 11:29:01 +010088/* Glibc has an efficient macro for sigemptyset
89 * (it just does one or two assignments of 0 to internal vector of longs).
90 */
91#if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
92# define sigemptyset __sigemptyset
93#endif
94
Denys Vlasenkod9560c12011-08-19 17:41:28 +020095/* Configuration section */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000096#ifndef DEFAULT_STRLEN
Denys Vlasenko041b3ee2011-08-18 12:48:56 +020097/* default maximum # of bytes printed in `printstr', change with -s switch */
Denys Vlasenko329655a2012-02-25 02:42:32 +010098# define DEFAULT_STRLEN 32
Wichert Akkerman76baf7c1999-02-19 00:21:36 +000099#endif
100#ifndef DEFAULT_ACOLUMN
Denys Vlasenko329655a2012-02-25 02:42:32 +0100101# define DEFAULT_ACOLUMN 40 /* default alignment column for results */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000102#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100103/*
104 * Maximum number of args to a syscall.
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200105 *
Denys Vlasenkoaa925db2012-02-25 15:19:02 +0100106 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS!
Dmitry V. Levin2690fad2013-05-07 08:03:41 +0000107 * linux/<ARCH>/syscallent*.h:
108 * all have nargs <= 6 except mips o32 which has nargs <= 7.
Denys Vlasenkod9560c12011-08-19 17:41:28 +0200109 */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000110#ifndef MAX_ARGS
Dmitry V. Levin2690fad2013-05-07 08:03:41 +0000111# ifdef LINUX_MIPSO32
112# define MAX_ARGS 7
113# else
114# define MAX_ARGS 6
115# endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000116#endif
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100117/* default sorting method for call profiling */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000118#ifndef DEFAULT_SORTBY
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100119# define DEFAULT_SORTBY "time"
John Hughes58265892001-10-18 15:13:53 +0000120#endif
Denys Vlasenkod27809c2013-02-12 12:50:10 +0100121/*
122 * Experimental code using PTRACE_SEIZE can be enabled here.
Denys Vlasenko9472a272013-02-12 11:43:46 +0100123 * This needs Linux kernel 3.4.x or later to work.
124 */
125#define USE_SEIZE 1
Denys Vlasenko05f32512013-02-26 12:00:34 +0100126/* To force NOMMU build, set to 1 */
Denys Vlasenko5c9d8f42013-02-19 15:30:12 +0100127#define NOMMU_SYSTEM 0
Denys Vlasenko76da8312013-07-16 12:18:59 +0200128/*
129 * Set to 1 to use speed-optimized vfprintf implementation.
130 * It results in strace using about 5% less CPU in user space
131 * (compared to glibc version).
132 * But strace spends a lot of time in kernel space,
133 * so overall it does not appear to be a significant win.
134 * Thus disabled by default.
135 */
136#define USE_CUSTOM_PRINTF 0
Denys Vlasenko5c9d8f42013-02-19 15:30:12 +0100137
Denys Vlasenko47932212013-06-30 23:53:49 +0200138#ifndef ERESTARTSYS
139# define ERESTARTSYS 512
140#endif
141#ifndef ERESTARTNOINTR
142# define ERESTARTNOINTR 513
143#endif
144#ifndef ERESTARTNOHAND
145# define ERESTARTNOHAND 514
146#endif
147#ifndef ERESTART_RESTARTBLOCK
148# define ERESTART_RESTARTBLOCK 516
149#endif
150
Denys Vlasenko9472a272013-02-12 11:43:46 +0100151#if defined(SPARC) || defined(SPARC64)
Denys Vlasenko329655a2012-02-25 02:42:32 +0100152# define PERSONALITY0_WORDSIZE 4
Denys Vlasenko329655a2012-02-25 02:42:32 +0100153# if defined(SPARC64)
Denys Vlasenko329655a2012-02-25 02:42:32 +0100154# define SUPPORTED_PERSONALITIES 2
Denys Vlasenkodf4dd8b2015-03-25 14:16:08 +0100155# define PERSONALITY1_WORDSIZE 8
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000156# ifdef HAVE_M32_MPERS
157# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
158# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
159# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
Dmitry V. Levin18225462016-05-02 22:06:56 +0000160# define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000161# endif
Denys Vlasenkodf4dd8b2015-03-25 14:16:08 +0100162# endif
163#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000164
Michal Ludvig0e035502002-09-23 15:41:01 +0000165#ifdef X86_64
H.J. Lu35be5812012-04-16 13:00:01 +0200166# define SUPPORTED_PERSONALITIES 3
Denys Vlasenko329655a2012-02-25 02:42:32 +0100167# define PERSONALITY0_WORDSIZE 8
168# define PERSONALITY1_WORDSIZE 4
H.J. Lu35be5812012-04-16 13:00:01 +0200169# define PERSONALITY2_WORDSIZE 4
Elvira Khabirova09294222015-08-04 01:47:02 +0300170# ifdef HAVE_M32_MPERS
171# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
172# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
173# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
Dmitry V. Levin18225462016-05-02 22:06:56 +0000174# define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
Elvira Khabirova09294222015-08-04 01:47:02 +0300175# endif
176# ifdef HAVE_MX32_MPERS
177# define PERSONALITY2_INCLUDE_FUNCS "mx32_funcs.h"
178# define PERSONALITY2_INCLUDE_PRINTERS_DECLS "mx32_printer_decls.h"
179# define PERSONALITY2_INCLUDE_PRINTERS_DEFS "mx32_printer_defs.h"
Dmitry V. Levin18225462016-05-02 22:06:56 +0000180# define MPERS_mx32_IOCTL_MACROS "ioctl_redefs2.h"
Elvira Khabirova09294222015-08-04 01:47:02 +0300181# endif
Roland McGrathee9d4352002-12-18 04:16:10 +0000182#endif
183
H.J. Lu085e4282012-04-17 11:05:04 -0700184#ifdef X32
H.J. Lu085e4282012-04-17 11:05:04 -0700185# define SUPPORTED_PERSONALITIES 2
186# define PERSONALITY0_WORDSIZE 4
187# define PERSONALITY1_WORDSIZE 4
Elvira Khabirova09294222015-08-04 01:47:02 +0300188# ifdef HAVE_M32_MPERS
189# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
190# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
191# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
Dmitry V. Levin18225462016-05-02 22:06:56 +0000192# define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
Elvira Khabirova09294222015-08-04 01:47:02 +0300193# endif
H.J. Lu085e4282012-04-17 11:05:04 -0700194#endif
195
Roland McGrath56703312008-05-20 01:35:55 +0000196#ifdef ARM
Denys Vlasenko7270de52013-02-21 15:46:34 +0100197/* one personality */
Roland McGrath56703312008-05-20 01:35:55 +0000198#endif
199
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000200#ifdef AARCH64
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000201/* The existing ARM personality, then AArch64 */
202# define SUPPORTED_PERSONALITIES 2
Dmitry V. Levinc37173f2015-12-09 00:43:39 +0000203# define PERSONALITY0_WORDSIZE 8
204# define PERSONALITY1_WORDSIZE 4
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000205# ifdef HAVE_M32_MPERS
Dmitry V. Levinc37173f2015-12-09 00:43:39 +0000206# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
207# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
208# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
Dmitry V. Levin18225462016-05-02 22:06:56 +0000209# define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000210# endif
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000211#endif
212
Andreas Schwabd69fa492010-07-12 21:39:57 +0200213#ifdef POWERPC64
Denys Vlasenko329655a2012-02-25 02:42:32 +0100214# define SUPPORTED_PERSONALITIES 2
215# define PERSONALITY0_WORDSIZE 8
216# define PERSONALITY1_WORDSIZE 4
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000217# ifdef HAVE_M32_MPERS
218# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
219# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
220# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
Dmitry V. Levin18225462016-05-02 22:06:56 +0000221# define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000222# endif
Andreas Schwabd69fa492010-07-12 21:39:57 +0200223#endif
224
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100225#ifdef TILE
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100226# define SUPPORTED_PERSONALITIES 2
227# define PERSONALITY0_WORDSIZE 8
228# define PERSONALITY1_WORDSIZE 4
229# ifdef __tilepro__
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100230# define DEFAULT_PERSONALITY 1
231# endif
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000232# ifdef HAVE_M32_MPERS
233# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
234# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
235# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
Dmitry V. Levin18225462016-05-02 22:06:56 +0000236# define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000237# endif
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100238#endif
239
Denys Vlasenko9472a272013-02-12 11:43:46 +0100240#ifndef SUPPORTED_PERSONALITIES
241# define SUPPORTED_PERSONALITIES 1
242#endif
243#ifndef DEFAULT_PERSONALITY
244# define DEFAULT_PERSONALITY 0
245#endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100246#ifndef PERSONALITY0_WORDSIZE
James Hogan3b09ebe2014-05-02 14:15:41 +0100247# define PERSONALITY0_WORDSIZE SIZEOF_LONG
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100248#endif
249
Elvira Khabirova09294222015-08-04 01:47:02 +0300250#ifndef PERSONALITY0_INCLUDE_PRINTERS_DECLS
251# define PERSONALITY0_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
252#endif
253#ifndef PERSONALITY0_INCLUDE_PRINTERS_DEFS
254# define PERSONALITY0_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
255#endif
256
257#ifndef PERSONALITY1_INCLUDE_PRINTERS_DECLS
258# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
259#endif
260#ifndef PERSONALITY1_INCLUDE_PRINTERS_DEFS
261# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
262#endif
263
264#ifndef PERSONALITY2_INCLUDE_PRINTERS_DECLS
265# define PERSONALITY2_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
266#endif
267#ifndef PERSONALITY2_INCLUDE_PRINTERS_DEFS
268# define PERSONALITY2_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
269#endif
270
271#ifndef PERSONALITY1_INCLUDE_FUNCS
272# define PERSONALITY1_INCLUDE_FUNCS "empty.h"
273#endif
274#ifndef PERSONALITY2_INCLUDE_FUNCS
275# define PERSONALITY2_INCLUDE_FUNCS "empty.h"
276#endif
277
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100278typedef struct sysent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100279 unsigned nargs;
280 int sys_flags;
Elvira Khabirova28e32df2015-07-10 22:24:54 +0300281 int sen;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100282 int (*sys_func)();
283 const char *sys_name;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100284} struct_sysent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100285
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100286typedef struct ioctlent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100287 const char *symbol;
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000288 unsigned int code;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100289} struct_ioctlent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100290
Dmitry V. Levinb0c51132016-06-17 16:12:13 +0000291#if defined LINUX_MIPSN32 || defined X32
292# define HAVE_STRUCT_TCB_EXT_ARG 1
293#else
294# define HAVE_STRUCT_TCB_EXT_ARG 0
295#endif
296
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000297/* Trace Control Block */
298struct tcb {
Denys Vlasenkod9ec1412011-08-20 01:39:05 +0200299 int flags; /* See below for TCB_ values */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200300 int pid; /* If 0, this tcb is free */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100301 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200302 int u_error; /* Error code */
303 long scno; /* System call number */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000304 long u_arg[MAX_ARGS]; /* System call arguments */
Dmitry V. Levinb0c51132016-06-17 16:12:13 +0000305#if HAVE_STRUCT_TCB_EXT_ARG
Denys Vlasenko9472a272013-02-12 11:43:46 +0100306 long long ext_arg[MAX_ARGS];
H.J. Ludd0130b2012-04-16 12:16:45 +0200307 long long u_lrval; /* long long return value */
308#endif
Denys Vlasenko9472a272013-02-12 11:43:46 +0100309 long u_rval; /* Return value */
Dmitry V. Levina5a839a2011-12-23 00:50:49 +0000310#if SUPPORTED_PERSONALITIES > 1
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000311 unsigned int currpers; /* Personality at the time of scno update */
Dmitry V. Levina5a839a2011-12-23 00:50:49 +0000312#endif
Dmitry V. Levin204c2bc2015-07-08 14:10:56 +0000313 int sys_func_rval; /* Syscall entry parser's return value */
Andreas Schwabccdff482009-10-27 16:27:13 +0100314 int curcol; /* Output column for this process */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200315 FILE *outf; /* Output file for this process */
Wichert Akkerman43a74822000-06-27 17:33:32 +0000316 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100317 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
Denys Vlasenko8497b622015-03-21 17:51:52 +0100318 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000319 struct timeval stime; /* System time usage as of last process wait */
320 struct timeval dtime; /* Delta for system time usage */
321 struct timeval etime; /* Syscall entry time */
Luca Clementi327064b2013-07-23 00:11:35 -0700322
323#ifdef USE_LIBUNWIND
324 struct UPT_info* libunwind_ui;
325 struct mmap_cache_t* mmap_cache;
326 unsigned int mmap_cache_size;
Masatake YAMATO9bc65612014-04-16 15:33:07 +0900327 unsigned int mmap_cache_generation;
Masatake YAMATOf8e39d72014-04-16 15:33:06 +0900328 struct queue_t* queue;
Luca Clementi327064b2013-07-23 00:11:35 -0700329#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000330};
331
332/* TCB flags */
Denys Vlasenko68269aa2012-03-15 13:02:31 +0100333/* We have attached to this process, but did not see it stopping yet */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200334#define TCB_STARTUP 0x01
335#define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200336/*
337 * Are we in system call entry or in syscall exit?
338 *
339 * This bit is set after all syscall entry processing is done.
340 * Therefore, this bit will be set when next ptrace stop occurs,
341 * which should be syscall exit stop. Other stops which are possible
342 * directly after syscall entry (death, ptrace event stop)
343 * are simpler and handled without calling trace_syscall(), therefore
344 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
345 * are limited to trace(), this condition is never observed in trace_syscall()
346 * and below.
347 * The bit is cleared after all syscall exit processing is done.
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200348 *
349 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
350 */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200351#define TCB_INSYSCALL 0x04
352#define TCB_ATTACHED 0x08 /* We attached to it already */
Dmitry V. Levin23ce9e42015-02-08 13:05:53 +0000353#define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */
354#define TCB_FILTERED 0x20 /* This system call has been filtered out */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000355
356/* qualifier flags */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100357#define QUAL_TRACE 0x001 /* this system call should be traced */
358#define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
359#define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
360#define QUAL_RAW 0x008 /* print all args in hex for this syscall */
361#define QUAL_SIGNAL 0x010 /* report events with this signal */
Denys Vlasenkoc1540fe2013-02-21 16:17:08 +0100362#define QUAL_READ 0x020 /* dump data read on this file descriptor */
363#define QUAL_WRITE 0x040 /* dump data written to this file descriptor */
Denys Vlasenkoa585c9d2013-02-21 16:15:43 +0100364typedef uint8_t qualbits_t;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100365
366#define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000367
368#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
369#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
370#define syserror(tcp) ((tcp)->u_error != 0)
Denys Vlasenko40d63b92013-02-22 13:23:38 +0100371#define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
372#define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
Grant Edwards8a082772011-04-07 20:25:40 +0000373#define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000374
Dmitry V. Levin0e097042016-04-26 00:08:16 +0000375#include "xlat.h"
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000376
Dmitry V. Levine96aee72016-06-25 13:47:54 +0000377extern const struct xlat addrfams[];
Dmitry V. Levin43b110b2014-12-06 03:53:16 +0000378extern const struct xlat at_flags[];
Dmitry V. Levina367db82015-11-19 18:13:53 +0000379extern const struct xlat dirent_types[];
Dmitry V. Levin43c8a5d2016-05-27 00:49:08 +0000380extern const struct xlat evdev_abs[];
Dmitry V. Levin95cce4f2016-06-27 00:02:55 +0000381extern const struct xlat msg_flags[];
Denys Vlasenkof535b542009-01-13 18:30:55 +0000382extern const struct xlat open_access_modes[];
Dmitry V. Levin43b110b2014-12-06 03:53:16 +0000383extern const struct xlat open_mode_flags[];
Elvira Khabirovac01ad062015-08-19 05:06:26 +0300384extern const struct xlat resource_flags[];
Dmitry V. Levin95cce4f2016-06-27 00:02:55 +0000385extern const struct xlat socketlayers[];
Denys Vlasenko86738a22013-02-17 14:31:55 +0100386extern const struct xlat whence_codes[];
Denys Vlasenkof535b542009-01-13 18:30:55 +0000387
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000388/* Format of syscall return values */
389#define RVAL_DECIMAL 000 /* decimal format */
390#define RVAL_HEX 001 /* hex format */
391#define RVAL_OCTAL 002 /* octal format */
392#define RVAL_UDECIMAL 003 /* unsigned decimal format */
Dmitry V. Levinb0c51132016-06-17 16:12:13 +0000393#if HAVE_STRUCT_TCB_EXT_ARG
H.J. Ludd0130b2012-04-16 12:16:45 +0200394# if 0 /* unused so far */
395# define RVAL_LDECIMAL 004 /* long decimal format */
396# define RVAL_LHEX 005 /* long hex format */
397# define RVAL_LOCTAL 006 /* long octal format */
398# endif
399# define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
Dmitry V. Levinb0c51132016-06-17 16:12:13 +0000400#endif /* HAVE_STRUCT_TCB_EXT_ARG */
Zubin Mithra64aa1b12014-06-04 08:30:41 +0530401#define RVAL_FD 010 /* file descriptor */
402#define RVAL_MASK 017 /* mask for these values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000403
Zubin Mithra64aa1b12014-06-04 08:30:41 +0530404#define RVAL_STR 020 /* Print `auxstr' field after return val */
405#define RVAL_NONE 040 /* Print nothing */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000406
Dmitry V. Levin204c2bc2015-07-08 14:10:56 +0000407#define RVAL_DECODED 0100 /* syscall decoding finished */
408
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000409#define TRACE_FILE 001 /* Trace file-related syscalls. */
410#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
411#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
412#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
413#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
Roland McGrath2fe7b132005-07-05 03:25:35 +0000414#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
Namhyung Kim96792962012-10-24 11:41:57 +0900415#define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
416#define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
Masatake YAMATO1d78d222014-04-16 15:33:11 +0900417#define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */
418#define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */
Dmitry V. Levin3b499ca2015-01-10 22:01:35 +0300419#define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000420
Gabriel Laskar8b6046a2015-12-04 01:07:33 +0100421#define IOCTL_NUMBER_UNKNOWN 0
422#define IOCTL_NUMBER_HANDLED 1
423#define IOCTL_NUMBER_STOP_LOOKUP 010
424
Elvira Khabirovac01ad062015-08-19 05:06:26 +0300425#define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL)
426
Dmitry V. Levin80f7db12014-12-13 21:49:01 +0000427#if defined(ARM) || defined(AARCH64) \
428 || defined(I386) || defined(X32) || defined(X86_64) \
Mike Frysingercc07f662015-02-26 02:15:33 -0500429 || defined(IA64) \
Dmitry V. Levin80f7db12014-12-13 21:49:01 +0000430 || defined(BFIN) \
431 || defined(M68K) \
432 || defined(MICROBLAZE) \
433 || defined(S390) \
434 || defined(SH) || defined(SH64) \
435 || defined(SPARC) || defined(SPARC64) \
436 /**/
437# define NEED_UID16_PARSERS 1
438#else
439# define NEED_UID16_PARSERS 0
440#endif
441
Fabien Siron802cc282016-06-17 16:29:53 +0000442enum sock_proto {
443 SOCK_PROTO_UNKNOWN,
444 SOCK_PROTO_UNIX,
445 SOCK_PROTO_TCP,
446 SOCK_PROTO_UDP,
447 SOCK_PROTO_TCPv6,
448 SOCK_PROTO_UDPv6,
449 SOCK_PROTO_NETLINK
450};
451extern enum sock_proto get_proto_by_name(const char *);
452
Fabien Siron2a54d8b2016-06-22 13:27:03 +0000453enum iov_decode {
454 IOV_DECODE_ADDR,
Fabien Siron2850f742016-07-06 15:49:22 +0000455 IOV_DECODE_STR,
456 IOV_DECODE_NETLINK
Fabien Siron2a54d8b2016-06-22 13:27:03 +0000457};
458
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000459typedef enum {
460 CFLAG_NONE = 0,
461 CFLAG_ONLY_STATS,
462 CFLAG_BOTH
463} cflag_t;
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000464extern cflag_t cflag;
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100465extern bool debug_flag;
466extern bool Tflag;
Anton Blancharda34dead2013-07-12 12:22:06 +0200467extern bool iflag;
Mark Hillse53bf232014-05-28 17:52:40 +0100468extern bool count_wallclock;
Daniel P. Berrange01997cf2013-05-13 11:30:55 +0100469extern unsigned int qflag;
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100470extern bool not_failing_only;
Dmitry V. Levin45e7b182014-08-08 23:38:26 +0000471extern unsigned int show_fd_path;
Denys Vlasenko2a3d2752013-05-14 16:07:46 +0200472extern bool hide_log_until_execve;
Denys Vlasenko38cfe7c2013-03-05 16:01:53 +0100473/* are we filtering traces based on paths? */
474extern const char **paths_selected;
475#define tracing_paths (paths_selected != NULL)
Denys Vlasenkoeec8d5d2013-02-14 03:29:48 +0100476extern unsigned xflag;
477extern unsigned followfork;
Luca Clementi327064b2013-07-23 00:11:35 -0700478#ifdef USE_LIBUNWIND
479/* if this is true do the stack trace for every system call */
480extern bool stack_trace_enabled;
481#endif
Denys Vlasenkoeec8d5d2013-02-14 03:29:48 +0100482extern unsigned ptrace_setoptions;
483extern unsigned max_strlen;
484extern unsigned os_release;
485#undef KERNEL_VERSION
486#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100487
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000488void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
489void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
490void error_msg_and_die(const char *fmt, ...)
491 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
Elvira Khabirovaa2fdfe92015-11-26 17:18:00 +0300492void error_msg_and_help(const char *fmt, ...)
493 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000494void perror_msg_and_die(const char *fmt, ...)
495 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
496void die_out_of_memory(void) ATTRIBUTE_NORETURN;
Denys Vlasenko75422762011-05-27 14:36:01 +0200497
Dmitry V. Levin3e9d71f2015-05-25 20:41:02 +0000498void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
499void *xcalloc(size_t nmemb, size_t size)
500 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2));
501void *xreallocarray(void *ptr, size_t nmemb, size_t size)
502 ATTRIBUTE_ALLOC_SIZE((2, 3));
503char *xstrdup(const char *str) ATTRIBUTE_MALLOC;
504
Denys Vlasenko76da8312013-07-16 12:18:59 +0200505#if USE_CUSTOM_PRINTF
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200506/*
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200507 * See comment in vsprintf.c for allowed formats.
508 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200509 */
510int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
511#else
512# define strace_vfprintf vfprintf
513#endif
514
Dmitry V. Levinbf2698a2016-07-03 22:15:45 +0000515extern int read_int_from_file(const char *, int *);
516
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000517extern void set_sortby(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100518extern void set_overhead(int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000519extern void qualify(const char *);
Denys Vlasenko5a2483b2013-07-01 12:49:14 +0200520extern void print_pc(struct tcb *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100521extern int trace_syscall(struct tcb *);
Dmitry V. Levinac5133d2014-05-29 18:10:00 +0000522extern void count_syscall(struct tcb *, const struct timeval *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100523extern void call_summary(FILE *);
524
Dmitry V. Levin9a176c92015-02-13 21:56:50 +0000525extern void clear_regs(void);
Denys Vlasenkoce7d9532013-02-05 16:36:13 +0100526extern void get_regs(pid_t pid);
Denys Vlasenko8497b622015-03-21 17:51:52 +0100527extern int get_scno(struct tcb *tcp);
Mike Frysingerd2eaf672015-08-18 03:24:59 -0400528extern const char *syscall_name(long scno);
Dmitry V. Levin9a176c92015-02-13 21:56:50 +0000529
Dmitry V. Levin9af94a22015-09-18 01:54:59 +0000530extern bool is_erestart(struct tcb *);
Dmitry V. Levin3858b932015-09-18 01:54:59 +0000531extern void temporarily_clear_syserror(struct tcb *);
532extern void restore_cleared_syserror(struct tcb *);
533
Denys Vlasenko7e69ed92015-03-21 19:50:53 +0100534extern int umoven(struct tcb *, long, unsigned int, void *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100535#define umove(pid, addr, objp) \
Denys Vlasenko7e69ed92015-03-21 19:50:53 +0100536 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
Dmitry V. Levin332a3262015-07-05 22:09:29 +0000537extern int umoven_or_printaddr(struct tcb *, long, unsigned int, void *);
538#define umove_or_printaddr(pid, addr, objp) \
539 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
Dmitry V. Levin97e59962015-01-14 08:05:45 +0000540extern int umovestr(struct tcb *, long, unsigned int, char *);
Denys Vlasenko752e5a02013-06-28 14:35:47 +0200541extern int upeek(int pid, long, long *);
Dmitry V. Levin78ed3f32015-03-23 00:04:27 +0000542
Dmitry V. Levin72e4f7a2016-05-06 23:26:43 +0000543extern bool
544print_array(struct tcb *tcp,
545 const unsigned long start_addr,
546 const size_t nmemb,
547 void *const elem_buf,
548 const size_t elem_size,
549 int (*const umoven_func)(struct tcb *,
550 long,
551 unsigned int,
552 void *),
553 bool (*const print_func)(struct tcb *,
554 void *elem_buf,
555 size_t elem_size,
556 void *opaque_data),
557 void *const opaque_data);
558
Dmitry V. Levin8e8d7d22015-03-23 23:14:08 +0000559#if defined ALPHA || defined IA64 || defined MIPS \
560 || defined SH || defined SPARC || defined SPARC64
Dmitry V. Levin78ed3f32015-03-23 00:04:27 +0000561# define HAVE_GETRVAL2
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100562extern long getrval2(struct tcb *);
Dmitry V. Levin78ed3f32015-03-23 00:04:27 +0000563#else
564# undef HAVE_GETRVAL2
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100565#endif
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100566
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000567extern const char *signame(const int);
Denys Vlasenko7239dbc2013-03-05 15:46:34 +0100568extern void pathtrace_select(const char *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100569extern int pathtrace_match(struct tcb *);
Denys Vlasenko61ad0a42013-03-06 18:24:34 +0100570extern int getfdpath(struct tcb *, int, char *, unsigned);
Fabien Siron2850f742016-07-06 15:49:22 +0000571extern enum sock_proto getfdproto(struct tcb *, int);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100572
Dmitry V. Levinc0db59b2016-05-14 21:55:35 +0000573extern const char *xlookup(const struct xlat *, const uint64_t);
Dmitry V. Levin43242e62016-04-28 18:37:54 +0000574extern const char *xlat_search(const struct xlat *, const size_t, const uint64_t);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100575
Dmitry V. Levinea1fea62015-03-31 19:45:08 +0000576extern unsigned long get_pagesize(void);
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000577extern int string_to_uint(const char *str);
Denys Vlasenkob338f2d2013-11-09 20:40:31 +0100578extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000579
Dmitry V. Levin513e96e2015-01-26 01:17:08 +0000580#define QUOTE_0_TERMINATED 0x01
581#define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
582
Dmitry V. Levin3c17d1b2016-02-01 23:14:59 +0000583extern int string_quote(const char *, char *, unsigned int, unsigned int);
Dmitry V. Levin513e96e2015-01-26 01:17:08 +0000584extern int print_quoted_string(const char *, unsigned int, unsigned int);
585
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100586/* a refers to the lower numbered u_arg,
587 * b refers to the higher numbered u_arg
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100588 */
Dmitry V. Levinda126fb2015-12-14 11:57:59 +0000589#ifdef WORDS_BIGENDIAN
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100590# define LONG_LONG(a,b) \
591 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
Dmitry V. Levinda126fb2015-12-14 11:57:59 +0000592#else
593# define LONG_LONG(a,b) \
594 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100595#endif
Dmitry V. Levin1ea64732015-01-10 00:08:58 +0000596extern int getllval(struct tcb *, unsigned long long *, int);
Dmitry V. Levinf523f102015-02-17 22:47:25 +0000597extern int printllval(struct tcb *, const char *, int)
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000598 ATTRIBUTE_FORMAT((printf, 2, 0));
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100599
Dmitry V. Levin332a3262015-07-05 22:09:29 +0000600extern void printaddr(long);
Dmitry V. Levinc1328102016-04-28 18:42:10 +0000601extern void printxvals(const uint64_t, const char *, const struct xlat *, ...)
Dmitry V. Levinb0d23cc2016-04-01 00:52:01 +0000602 ATTRIBUTE_SENTINEL;
Andreas Schwabe5355de2009-10-27 16:56:43 +0100603extern int printargs(struct tcb *);
Dmitry V. Levin1ab6e252016-02-14 16:26:37 +0000604extern int printargs_u(struct tcb *);
605extern int printargs_d(struct tcb *);
606
Dmitry V. Levinc9146eb2016-04-28 18:19:27 +0000607extern void addflags(const struct xlat *, uint64_t);
Dmitry V. Levin00beed62016-04-28 18:55:18 +0000608extern int printflags64(const struct xlat *, uint64_t, const char *);
Dmitry V. Levin48110232016-05-15 14:26:03 +0000609extern const char *sprintflags(const char *, const struct xlat *, uint64_t);
Dmitry V. Levin9134aab2016-05-14 21:46:05 +0000610extern const char *sprintmode(unsigned int);
Dmitry V. Levinb1a01b82014-12-06 03:53:16 +0000611extern const char *sprinttime(time_t);
Dmitry V. Levin95cce4f2016-06-27 00:02:55 +0000612extern void decode_msghdr(struct tcb *, long, unsigned long);
613extern void decode_mmsgvec(struct tcb *, unsigned long, unsigned int, bool);
Dmitry V. Levin93c9d1c2016-01-20 03:26:37 +0000614extern void dumpiov_in_msghdr(struct tcb *, long, unsigned long);
Masatake YAMATOa807dce2014-11-07 01:23:26 +0900615extern void dumpiov_in_mmsghdr(struct tcb *, long);
Dmitry V. Levin05a0af62016-01-20 00:17:02 +0000616extern void dumpiov_upto(struct tcb *, int, long, unsigned long);
617#define dumpiov(tcp, len, addr) \
618 dumpiov_upto((tcp), (len), (addr), (unsigned long) -1L)
Andreas Schwabe5355de2009-10-27 16:56:43 +0100619extern void dumpstr(struct tcb *, long, int);
Denys Vlasenkob5d43b82012-04-28 14:58:35 +0200620extern void printstr(struct tcb *, long, long);
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000621extern bool printnum_short(struct tcb *, long, const char *)
Dmitry V. Levinc88163e2015-07-05 22:09:29 +0000622 ATTRIBUTE_FORMAT((printf, 3, 0));
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000623extern bool printnum_int(struct tcb *, long, const char *)
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000624 ATTRIBUTE_FORMAT((printf, 3, 0));
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000625extern bool printnum_int64(struct tcb *, long, const char *)
Dmitry V. Levinc88163e2015-07-05 22:09:29 +0000626 ATTRIBUTE_FORMAT((printf, 3, 0));
Dmitry V. Levin2479ef02015-08-18 14:58:27 +0000627
628#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000629extern bool printnum_long_int(struct tcb *, long, const char *, const char *)
Dmitry V. Levin2479ef02015-08-18 14:58:27 +0000630 ATTRIBUTE_FORMAT((printf, 3, 0))
631 ATTRIBUTE_FORMAT((printf, 4, 0));
632# define printnum_slong(tcp, addr) \
633 printnum_long_int((tcp), (addr), "%" PRId64, "%d")
634# define printnum_ulong(tcp, addr) \
635 printnum_long_int((tcp), (addr), "%" PRIu64, "%u")
636# define printnum_ptr(tcp, addr) \
637 printnum_long_int((tcp), (addr), "%#" PRIx64, "%#x")
638#elif SIZEOF_LONG > 4
639# define printnum_slong(tcp, addr) \
640 printnum_int64((tcp), (addr), "%" PRId64)
641# define printnum_ulong(tcp, addr) \
642 printnum_int64((tcp), (addr), "%" PRIu64)
643# define printnum_ptr(tcp, addr) \
644 printnum_int64((tcp), (addr), "%#" PRIx64)
645#else
646# define printnum_slong(tcp, addr) \
647 printnum_int((tcp), (addr), "%d")
648# define printnum_ulong(tcp, addr) \
649 printnum_int((tcp), (addr), "%u")
650# define printnum_ptr(tcp, addr) \
651 printnum_int((tcp), (addr), "%#x")
Dmitry V. Levinc88163e2015-07-05 22:09:29 +0000652#endif
Dmitry V. Levin2479ef02015-08-18 14:58:27 +0000653
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000654extern bool printpair_int(struct tcb *, long, const char *)
Dmitry V. Levin69127a32015-07-05 22:09:29 +0000655 ATTRIBUTE_FORMAT((printf, 3, 0));
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000656extern bool printpair_int64(struct tcb *, long, const char *)
Dmitry V. Levin69127a32015-07-05 22:09:29 +0000657 ATTRIBUTE_FORMAT((printf, 3, 0));
Andreas Schwabe5355de2009-10-27 16:56:43 +0100658extern void printpath(struct tcb *, long);
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000659extern void printpathn(struct tcb *, long, unsigned int);
Dmitry V. Levin2950de32015-09-18 17:44:16 +0000660#define TIMESPEC_TEXT_BUFSIZE \
661 (sizeof(intmax_t)*3 * 2 + sizeof("{tv_sec=%jd, tv_nsec=%jd}"))
Dmitry V. Levin31382132011-03-04 05:08:02 +0300662extern void printfd(struct tcb *, int);
Dmitry V. Levin3bf9c192016-06-21 16:45:40 +0000663extern void print_sockaddr(struct tcb *tcp, const void *, int);
Fabien Siron802cc282016-06-17 16:29:53 +0000664extern bool print_sockaddr_by_inode(const unsigned long, const enum sock_proto);
Dmitry V. Levin3c17d1b2016-02-01 23:14:59 +0000665extern bool print_sockaddr_by_inode_cached(const unsigned long);
Dmitry V. Levin99db95d2014-02-05 04:13:18 +0000666extern void print_dirfd(struct tcb *, int);
Dmitry V. Levin42e566a2016-06-25 11:31:48 +0000667extern int decode_sockaddr(struct tcb *, long, int);
Sergei Trofimovich02a08fb2011-08-11 18:04:53 +0300668#ifdef ALPHA
669extern void printrusage32(struct tcb *, long);
Dmitry V. Levin4cb5ccc2015-09-18 18:02:50 +0000670extern const char *sprint_timeval32(struct tcb *tcp, long);
Dmitry V. Levinf1e3a322015-09-18 15:16:11 +0000671extern void print_timeval32(struct tcb *tcp, long);
672extern void print_timeval32_pair(struct tcb *tcp, long);
Dmitry V. Levin322be802015-09-17 20:23:31 +0000673extern void print_itimerval32(struct tcb *tcp, long);
Sergei Trofimovich02a08fb2011-08-11 18:04:53 +0300674#endif
Dmitry V. Levin1da7c952014-12-13 18:24:13 +0000675extern void printuid(const char *, const unsigned int);
Denys Vlasenko5e133aa2013-07-18 17:02:21 +0200676extern void print_sigset_addr_len(struct tcb *, long, long);
Dmitry V. Levin74219ea2015-03-06 01:47:18 +0000677extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
678#define tprintsigmask_addr(prefix, mask) \
679 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
Andreas Schwabe5355de2009-10-27 16:56:43 +0100680extern void printsignal(int);
Fabien Siron2a54d8b2016-06-22 13:27:03 +0000681extern void tprint_iov(struct tcb *, unsigned long, unsigned long, enum iov_decode);
682extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long,
683 enum iov_decode, unsigned long);
Fabien Siron2850f742016-07-06 15:49:22 +0000684extern void decode_netlink(struct tcb *, unsigned long, unsigned long);
Dmitry V. Levindd9a5112016-04-28 23:40:37 +0000685extern void tprint_open_modes(unsigned int);
686extern const char *sprint_open_modes(unsigned int);
Dmitry V. Levin50a26512016-05-12 14:23:50 +0000687extern void print_seccomp_filter(struct tcb *, unsigned long);
688extern void print_seccomp_fprog(struct tcb *, unsigned long, unsigned short);
Grant Edwards8a082772011-04-07 20:25:40 +0000689
Dmitry V. Levin67c2f672016-04-26 00:21:26 +0000690struct strace_statfs;
691extern void print_struct_statfs(struct tcb *tcp, long);
692extern void print_struct_statfs64(struct tcb *tcp, long, unsigned long);
693
Dmitry V. Levin45ae9372016-06-23 17:38:18 +0000694extern void print_ifindex(unsigned int);
Dmitry V. Levin45ae9372016-06-23 17:38:18 +0000695
Jeff Mahoney8cc69622016-05-18 18:09:39 -0400696extern int file_ioctl(struct tcb *, const unsigned int, long);
Dmitry V. Levin4dd9f3f2016-05-26 00:37:26 +0000697extern int fs_x_ioctl(struct tcb *, const unsigned int, long);
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000698extern int loop_ioctl(struct tcb *, const unsigned int, long);
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000699extern int ptp_ioctl(struct tcb *, const unsigned int, long);
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000700extern int scsi_ioctl(struct tcb *, const unsigned int, long);
701extern int sock_ioctl(struct tcb *, const unsigned int, long);
702extern int term_ioctl(struct tcb *, const unsigned int, long);
703extern int ubi_ioctl(struct tcb *, const unsigned int, long);
Dr. David Alan Gilbert5d1216a2016-05-10 11:49:02 +0100704extern int uffdio_ioctl(struct tcb *, const unsigned int, long);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000705
Dmitry V. Levin447db452014-05-29 17:59:01 +0000706extern int tv_nz(const struct timeval *);
707extern int tv_cmp(const struct timeval *, const struct timeval *);
708extern double tv_float(const struct timeval *);
709extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *);
710extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *);
711extern void tv_mul(struct timeval *, const struct timeval *, int);
712extern void tv_div(struct timeval *, const struct timeval *, int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000713
Luca Clementi327064b2013-07-23 00:11:35 -0700714#ifdef USE_LIBUNWIND
Masatake YAMATO61413922014-04-16 15:33:02 +0900715extern void unwind_init(void);
716extern void unwind_tcb_init(struct tcb *tcp);
717extern void unwind_tcb_fin(struct tcb *tcp);
718extern void unwind_cache_invalidate(struct tcb* tcp);
719extern void unwind_print_stacktrace(struct tcb* tcp);
Masatake YAMATOf8e39d72014-04-16 15:33:06 +0900720extern void unwind_capture_stacktrace(struct tcb* tcp);
Luca Clementi327064b2013-07-23 00:11:35 -0700721#endif
722
Dmitry V. Levin00beed62016-04-28 18:55:18 +0000723static inline int
724printflags(const struct xlat *x, unsigned int flags, const char *dflt)
725{
726 return printflags64(x, flags, dflt);
727}
728
Dmitry V. Levin77ab8dd2016-05-16 22:44:50 +0000729static inline int
730printflags_long(const struct xlat *x, unsigned long flags, const char *dflt)
731{
732 return printflags64(x, flags, dflt);
733}
734
Dmitry V. Levin7d63aa52016-04-28 17:50:51 +0000735static inline void
Dmitry V. Levin482bab02016-04-28 18:15:20 +0000736printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
737{
738 printxvals(val, dflt, x, NULL);
739}
740
741static inline void
Dmitry V. Levin7d63aa52016-04-28 17:50:51 +0000742printxval(const struct xlat *x, const unsigned int val, const char *dflt)
743{
744 printxvals(val, dflt, x, NULL);
745}
746
Dmitry V. Levin77ab8dd2016-05-16 22:44:50 +0000747static inline void
748printxval_long(const struct xlat *x, const unsigned long val, const char *dflt)
749{
750 printxvals(val, dflt, x, NULL);
751}
752
Denys Vlasenko7de265d2012-03-13 11:44:31 +0100753/* Strace log generation machinery.
754 *
755 * printing_tcp: tcb which has incomplete line being printed right now.
756 * NULL if last line has been completed ('\n'-terminated).
757 * printleader(tcp) examines it, finishes incomplete line if needed,
758 * the sets it to tcp.
759 * line_ended() clears printing_tcp and resets ->curcol = 0.
760 * tcp->curcol == 0 check is also used to detect completeness
761 * of last line, since in -ff mode just checking printing_tcp for NULL
762 * is not enough.
763 *
764 * If you change this code, test log generation in both -f and -ff modes
765 * using:
766 * strace -oLOG -f[f] test/threaded_execve
767 * strace -oLOG -f[f] test/sigkill_rain
768 * strace -oLOG -f[f] -p "`pidof web_browser`"
769 */
770extern struct tcb *printing_tcp;
771extern void printleader(struct tcb *);
772extern void line_ended(void);
773extern void tabto(void);
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000774extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
Denys Vlasenko7de265d2012-03-13 11:44:31 +0100775extern void tprints(const char *str);
776
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100777#if SUPPORTED_PERSONALITIES > 1
778extern void set_personality(int personality);
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100779extern unsigned current_personality;
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100780#else
781# define set_personality(personality) ((void)0)
782# define current_personality 0
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100783#endif
784
785#if SUPPORTED_PERSONALITIES == 1
786# define current_wordsize PERSONALITY0_WORDSIZE
787#else
788# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
789# define current_wordsize PERSONALITY0_WORDSIZE
790# else
791extern unsigned current_wordsize;
792# endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100793#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000794
Denys Vlasenkoe015d2d2013-02-15 14:58:52 +0100795/* In many, many places we play fast and loose and use
796 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
797 * We probably need to use widen_to_long() instead:
798 */
799#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
800# define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
801#else
802# define widen_to_long(v) ((long)(v))
803#endif
804
Dmitry V. Levin84a979c2016-05-26 10:12:17 +0000805/*
806 * Widen without sign-extension a signed integer type to unsigned long long.
807 */
808#define widen_to_ull(v) \
809 (sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
810 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
811 (unsigned long long) (v))
812
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100813extern const struct_sysent sysent0[];
814extern const char *const errnoent0[];
815extern const char *const signalent0[];
816extern const struct_ioctlent ioctlent0[];
817extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
818#define qual_flags (qual_vec[current_personality])
Elvira Khabirova09294222015-08-04 01:47:02 +0300819
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100820#if SUPPORTED_PERSONALITIES > 1
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100821extern const struct_sysent *sysent;
Denys Vlasenko39fca622011-08-20 02:12:33 +0200822extern const char *const *errnoent;
Roland McGrathee36ce12004-09-04 03:53:10 +0000823extern const char *const *signalent;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100824extern const struct_ioctlent *ioctlent;
825#else
826# define sysent sysent0
827# define errnoent errnoent0
828# define signalent signalent0
829# define ioctlent ioctlent0
830#endif
Elvira Khabirova09294222015-08-04 01:47:02 +0300831
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100832extern unsigned nsyscalls;
833extern unsigned nerrnos;
Denys Vlasenkoafc64032011-08-23 13:29:01 +0200834extern unsigned nsignals;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100835extern unsigned nioctlents;
836extern unsigned num_quals;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000837
Dmitry V. Levina8fce092016-05-21 22:53:06 +0000838#ifdef IN_MPERS_BOOTSTRAP
839/* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
840# define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
841#else /* !IN_MPERS_BOOTSTRAP */
842# if SUPPORTED_PERSONALITIES > 1
843# include "printers.h"
844# else
845# include "native_printer_decls.h"
846# endif
847# define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
848#endif /* !IN_MPERS_BOOTSTRAP */
Elvira Khabirova09294222015-08-04 01:47:02 +0300849
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100850/*
851 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
852 */
Denys Vlasenko5721cdb2013-02-16 13:22:38 +0100853#define SCNO_IS_VALID(scno) \
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100854 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
855
856/* Only ensures that sysent[scno] isn't out of range */
857#define SCNO_IN_RANGE(scno) \
858 ((unsigned long)(scno) < nsyscalls)
Dmitry V. Levina0bd3742015-04-07 01:36:50 +0000859
Elvira Khabirova09294222015-08-04 01:47:02 +0300860#define MPERS_FUNC_NAME__(prefix, name) prefix ## name
861#define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
862#define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
863
Szabolcs Nagy34683e32015-12-15 18:32:17 +0000864#define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
Dmitry V. Levina0bd3742015-04-07 01:36:50 +0000865
Szabolcs Nagy34683e32015-12-15 18:32:17 +0000866#define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
Elvira Khabirova09294222015-08-04 01:47:02 +0300867
Jeff Mahoney1f3482b2016-03-31 00:34:17 -0400868/*
869 * The kernel used to define 64-bit types on 64-bit systems on a per-arch
870 * basis. Some architectures would use unsigned long and others would use
871 * unsigned long long. These types were exported as part of the
872 * kernel-userspace ABI and now must be maintained forever. This matches
873 * what the kernel exports for each architecture so we don't need to cast
874 * every printing of __u64 or __s64 to stdint types.
875 */
876#if SIZEOF_LONG == 4
877# define PRI__64 "ll"
878#elif defined ALPHA || defined IA64 || defined MIPS || defined POWERPC
879# define PRI__64 "l"
880#else
881# define PRI__64 "ll"
882#endif
883
Dmitry V. Levine5c88492016-04-22 23:54:58 +0000884#define PRI__d64 PRI__64"d"
Jeff Mahoney1f3482b2016-03-31 00:34:17 -0400885#define PRI__u64 PRI__64"u"
886#define PRI__x64 PRI__64"x"