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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
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"
160# endif
Denys Vlasenkodf4dd8b2015-03-25 14:16:08 +0100161# endif
162#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000163
Michal Ludvig0e035502002-09-23 15:41:01 +0000164#ifdef X86_64
H.J. Lu35be5812012-04-16 13:00:01 +0200165# define SUPPORTED_PERSONALITIES 3
Denys Vlasenko329655a2012-02-25 02:42:32 +0100166# define PERSONALITY0_WORDSIZE 8
167# define PERSONALITY1_WORDSIZE 4
H.J. Lu35be5812012-04-16 13:00:01 +0200168# define PERSONALITY2_WORDSIZE 4
Elvira Khabirova09294222015-08-04 01:47:02 +0300169# ifdef HAVE_M32_MPERS
170# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
171# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
172# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
173# endif
174# ifdef HAVE_MX32_MPERS
175# define PERSONALITY2_INCLUDE_FUNCS "mx32_funcs.h"
176# define PERSONALITY2_INCLUDE_PRINTERS_DECLS "mx32_printer_decls.h"
177# define PERSONALITY2_INCLUDE_PRINTERS_DEFS "mx32_printer_defs.h"
178# endif
Roland McGrathee9d4352002-12-18 04:16:10 +0000179#endif
180
H.J. Lu085e4282012-04-17 11:05:04 -0700181#ifdef X32
H.J. Lu085e4282012-04-17 11:05:04 -0700182# define SUPPORTED_PERSONALITIES 2
183# define PERSONALITY0_WORDSIZE 4
184# define PERSONALITY1_WORDSIZE 4
Elvira Khabirova09294222015-08-04 01:47:02 +0300185# ifdef HAVE_M32_MPERS
186# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
187# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
188# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
189# endif
H.J. Lu085e4282012-04-17 11:05:04 -0700190#endif
191
Roland McGrath56703312008-05-20 01:35:55 +0000192#ifdef ARM
Denys Vlasenko7270de52013-02-21 15:46:34 +0100193/* one personality */
Roland McGrath56703312008-05-20 01:35:55 +0000194#endif
195
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000196#ifdef AARCH64
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000197/* The existing ARM personality, then AArch64 */
198# define SUPPORTED_PERSONALITIES 2
Dmitry V. Levinc37173f2015-12-09 00:43:39 +0000199# define PERSONALITY0_WORDSIZE 8
200# define PERSONALITY1_WORDSIZE 4
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000201# ifdef HAVE_M32_MPERS
Dmitry V. Levinc37173f2015-12-09 00:43:39 +0000202# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
203# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
204# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000205# endif
Steve McIntyre890a5ca2012-11-10 11:24:48 +0000206#endif
207
Andreas Schwabd69fa492010-07-12 21:39:57 +0200208#ifdef POWERPC64
Denys Vlasenko329655a2012-02-25 02:42:32 +0100209# define SUPPORTED_PERSONALITIES 2
210# define PERSONALITY0_WORDSIZE 8
211# define PERSONALITY1_WORDSIZE 4
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000212# ifdef HAVE_M32_MPERS
213# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
214# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
215# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
216# endif
Andreas Schwabd69fa492010-07-12 21:39:57 +0200217#endif
218
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100219#ifdef TILE
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100220# define SUPPORTED_PERSONALITIES 2
221# define PERSONALITY0_WORDSIZE 8
222# define PERSONALITY1_WORDSIZE 4
223# ifdef __tilepro__
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100224# define DEFAULT_PERSONALITY 1
225# endif
Dmitry V. Levina1fa83d2015-09-14 22:33:23 +0000226# ifdef HAVE_M32_MPERS
227# define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
228# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
229# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
230# endif
Chris Metcalf0b99a8a2013-02-05 17:48:33 +0100231#endif
232
Denys Vlasenko9472a272013-02-12 11:43:46 +0100233#ifndef SUPPORTED_PERSONALITIES
234# define SUPPORTED_PERSONALITIES 1
235#endif
236#ifndef DEFAULT_PERSONALITY
237# define DEFAULT_PERSONALITY 0
238#endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100239#ifndef PERSONALITY0_WORDSIZE
James Hogan3b09ebe2014-05-02 14:15:41 +0100240# define PERSONALITY0_WORDSIZE SIZEOF_LONG
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100241#endif
242
Elvira Khabirova09294222015-08-04 01:47:02 +0300243#ifndef PERSONALITY0_INCLUDE_PRINTERS_DECLS
244# define PERSONALITY0_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
245#endif
246#ifndef PERSONALITY0_INCLUDE_PRINTERS_DEFS
247# define PERSONALITY0_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
248#endif
249
250#ifndef PERSONALITY1_INCLUDE_PRINTERS_DECLS
251# define PERSONALITY1_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
252#endif
253#ifndef PERSONALITY1_INCLUDE_PRINTERS_DEFS
254# define PERSONALITY1_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
255#endif
256
257#ifndef PERSONALITY2_INCLUDE_PRINTERS_DECLS
258# define PERSONALITY2_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
259#endif
260#ifndef PERSONALITY2_INCLUDE_PRINTERS_DEFS
261# define PERSONALITY2_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
262#endif
263
264#ifndef PERSONALITY1_INCLUDE_FUNCS
265# define PERSONALITY1_INCLUDE_FUNCS "empty.h"
266#endif
267#ifndef PERSONALITY2_INCLUDE_FUNCS
268# define PERSONALITY2_INCLUDE_FUNCS "empty.h"
269#endif
270
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100271typedef struct sysent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100272 unsigned nargs;
273 int sys_flags;
Elvira Khabirova28e32df2015-07-10 22:24:54 +0300274 int sen;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100275 int (*sys_func)();
276 const char *sys_name;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100277} struct_sysent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100278
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100279typedef struct ioctlent {
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100280 const char *symbol;
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000281 unsigned int code;
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100282} struct_ioctlent;
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100283
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000284/* Trace Control Block */
285struct tcb {
Denys Vlasenkod9ec1412011-08-20 01:39:05 +0200286 int flags; /* See below for TCB_ values */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200287 int pid; /* If 0, this tcb is free */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100288 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200289 int u_error; /* Error code */
290 long scno; /* System call number */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000291 long u_arg[MAX_ARGS]; /* System call arguments */
H.J. Lu35be5812012-04-16 13:00:01 +0200292#if defined(LINUX_MIPSN32) || defined(X32)
Denys Vlasenko9472a272013-02-12 11:43:46 +0100293 long long ext_arg[MAX_ARGS];
H.J. Ludd0130b2012-04-16 12:16:45 +0200294 long long u_lrval; /* long long return value */
295#endif
Denys Vlasenko9472a272013-02-12 11:43:46 +0100296 long u_rval; /* Return value */
Dmitry V. Levina5a839a2011-12-23 00:50:49 +0000297#if SUPPORTED_PERSONALITIES > 1
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000298 unsigned int currpers; /* Personality at the time of scno update */
Dmitry V. Levina5a839a2011-12-23 00:50:49 +0000299#endif
Dmitry V. Levin204c2bc2015-07-08 14:10:56 +0000300 int sys_func_rval; /* Syscall entry parser's return value */
Andreas Schwabccdff482009-10-27 16:27:13 +0100301 int curcol; /* Output column for this process */
Denys Vlasenko92d443c2011-08-25 00:25:08 +0200302 FILE *outf; /* Output file for this process */
Wichert Akkerman43a74822000-06-27 17:33:32 +0000303 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100304 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
Denys Vlasenko8497b622015-03-21 17:51:52 +0100305 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000306 struct timeval stime; /* System time usage as of last process wait */
307 struct timeval dtime; /* Delta for system time usage */
308 struct timeval etime; /* Syscall entry time */
Luca Clementi327064b2013-07-23 00:11:35 -0700309
310#ifdef USE_LIBUNWIND
311 struct UPT_info* libunwind_ui;
312 struct mmap_cache_t* mmap_cache;
313 unsigned int mmap_cache_size;
Masatake YAMATO9bc65612014-04-16 15:33:07 +0900314 unsigned int mmap_cache_generation;
Masatake YAMATOf8e39d72014-04-16 15:33:06 +0900315 struct queue_t* queue;
Luca Clementi327064b2013-07-23 00:11:35 -0700316#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000317};
318
319/* TCB flags */
Denys Vlasenko68269aa2012-03-15 13:02:31 +0100320/* We have attached to this process, but did not see it stopping yet */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200321#define TCB_STARTUP 0x01
322#define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200323/*
324 * Are we in system call entry or in syscall exit?
325 *
326 * This bit is set after all syscall entry processing is done.
327 * Therefore, this bit will be set when next ptrace stop occurs,
328 * which should be syscall exit stop. Other stops which are possible
329 * directly after syscall entry (death, ptrace event stop)
330 * are simpler and handled without calling trace_syscall(), therefore
331 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
332 * are limited to trace(), this condition is never observed in trace_syscall()
333 * and below.
334 * The bit is cleared after all syscall exit processing is done.
Denys Vlasenkob88f9612011-08-21 18:03:23 +0200335 *
336 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
337 */
Denys Vlasenkofadbf662013-06-26 14:14:29 +0200338#define TCB_INSYSCALL 0x04
339#define TCB_ATTACHED 0x08 /* We attached to it already */
Dmitry V. Levin23ce9e42015-02-08 13:05:53 +0000340#define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */
341#define TCB_FILTERED 0x20 /* This system call has been filtered out */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000342
343/* qualifier flags */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100344#define QUAL_TRACE 0x001 /* this system call should be traced */
345#define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
346#define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
347#define QUAL_RAW 0x008 /* print all args in hex for this syscall */
348#define QUAL_SIGNAL 0x010 /* report events with this signal */
Denys Vlasenkoc1540fe2013-02-21 16:17:08 +0100349#define QUAL_READ 0x020 /* dump data read on this file descriptor */
350#define QUAL_WRITE 0x040 /* dump data written to this file descriptor */
Denys Vlasenkoa585c9d2013-02-21 16:15:43 +0100351typedef uint8_t qualbits_t;
Denys Vlasenkoc1540fe2013-02-21 16:17:08 +0100352#define UNDEFINED_SCNO 0x100 /* Used only in tcp->qual_flg */
Denys Vlasenko74ec14f2013-02-21 16:13:47 +0100353
354#define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000355
356#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
357#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
358#define syserror(tcp) ((tcp)->u_error != 0)
Denys Vlasenko40d63b92013-02-22 13:23:38 +0100359#define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
360#define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
Grant Edwards8a082772011-04-07 20:25:40 +0000361#define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000362
Dmitry V. Levin0e097042016-04-26 00:08:16 +0000363#include "xlat.h"
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000364
Denys Vlasenkof535b542009-01-13 18:30:55 +0000365extern const struct xlat addrfams[];
Dmitry V. Levin43b110b2014-12-06 03:53:16 +0000366extern const struct xlat at_flags[];
Dmitry V. Levina367db82015-11-19 18:13:53 +0000367extern const struct xlat dirent_types[];
Denys Vlasenkof535b542009-01-13 18:30:55 +0000368extern const struct xlat open_access_modes[];
Dmitry V. Levin43b110b2014-12-06 03:53:16 +0000369extern const struct xlat open_mode_flags[];
Elvira Khabirovac01ad062015-08-19 05:06:26 +0300370extern const struct xlat resource_flags[];
Denys Vlasenko86738a22013-02-17 14:31:55 +0100371extern const struct xlat whence_codes[];
Denys Vlasenkof535b542009-01-13 18:30:55 +0000372
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000373/* Format of syscall return values */
374#define RVAL_DECIMAL 000 /* decimal format */
375#define RVAL_HEX 001 /* hex format */
376#define RVAL_OCTAL 002 /* octal format */
377#define RVAL_UDECIMAL 003 /* unsigned decimal format */
H.J. Ludd0130b2012-04-16 12:16:45 +0200378#if defined(LINUX_MIPSN32) || defined(X32)
379# if 0 /* unused so far */
380# define RVAL_LDECIMAL 004 /* long decimal format */
381# define RVAL_LHEX 005 /* long hex format */
382# define RVAL_LOCTAL 006 /* long octal format */
383# endif
384# define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
385#endif
Zubin Mithra64aa1b12014-06-04 08:30:41 +0530386#define RVAL_FD 010 /* file descriptor */
387#define RVAL_MASK 017 /* mask for these values */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000388
Zubin Mithra64aa1b12014-06-04 08:30:41 +0530389#define RVAL_STR 020 /* Print `auxstr' field after return val */
390#define RVAL_NONE 040 /* Print nothing */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000391
Dmitry V. Levin204c2bc2015-07-08 14:10:56 +0000392#define RVAL_DECODED 0100 /* syscall decoding finished */
393
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000394#define TRACE_FILE 001 /* Trace file-related syscalls. */
395#define TRACE_IPC 002 /* Trace IPC-related syscalls. */
396#define TRACE_NETWORK 004 /* Trace network-related syscalls. */
397#define TRACE_PROCESS 010 /* Trace process-related syscalls. */
398#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
Roland McGrath2fe7b132005-07-05 03:25:35 +0000399#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
Namhyung Kim96792962012-10-24 11:41:57 +0900400#define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
401#define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
Masatake YAMATO1d78d222014-04-16 15:33:11 +0900402#define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */
403#define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */
Dmitry V. Levin3b499ca2015-01-10 22:01:35 +0300404#define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000405
Gabriel Laskar8b6046a2015-12-04 01:07:33 +0100406#define IOCTL_NUMBER_UNKNOWN 0
407#define IOCTL_NUMBER_HANDLED 1
408#define IOCTL_NUMBER_STOP_LOOKUP 010
409
Elvira Khabirovac01ad062015-08-19 05:06:26 +0300410#define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL)
411
Dmitry V. Levin80f7db12014-12-13 21:49:01 +0000412#if defined(ARM) || defined(AARCH64) \
413 || defined(I386) || defined(X32) || defined(X86_64) \
Mike Frysingercc07f662015-02-26 02:15:33 -0500414 || defined(IA64) \
Dmitry V. Levin80f7db12014-12-13 21:49:01 +0000415 || defined(BFIN) \
416 || defined(M68K) \
417 || defined(MICROBLAZE) \
418 || defined(S390) \
419 || defined(SH) || defined(SH64) \
420 || defined(SPARC) || defined(SPARC64) \
421 /**/
422# define NEED_UID16_PARSERS 1
423#else
424# define NEED_UID16_PARSERS 0
425#endif
426
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000427typedef enum {
428 CFLAG_NONE = 0,
429 CFLAG_ONLY_STATS,
430 CFLAG_BOTH
431} cflag_t;
Dmitry V. Levine3a7ef52010-03-28 19:24:54 +0000432extern cflag_t cflag;
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100433extern bool debug_flag;
434extern bool Tflag;
Anton Blancharda34dead2013-07-12 12:22:06 +0200435extern bool iflag;
Mark Hillse53bf232014-05-28 17:52:40 +0100436extern bool count_wallclock;
Daniel P. Berrange01997cf2013-05-13 11:30:55 +0100437extern unsigned int qflag;
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100438extern bool not_failing_only;
Dmitry V. Levin45e7b182014-08-08 23:38:26 +0000439extern unsigned int show_fd_path;
Denys Vlasenko2a3d2752013-05-14 16:07:46 +0200440extern bool hide_log_until_execve;
Denys Vlasenko38cfe7c2013-03-05 16:01:53 +0100441/* are we filtering traces based on paths? */
442extern const char **paths_selected;
443#define tracing_paths (paths_selected != NULL)
Denys Vlasenkoeec8d5d2013-02-14 03:29:48 +0100444extern unsigned xflag;
445extern unsigned followfork;
Luca Clementi327064b2013-07-23 00:11:35 -0700446#ifdef USE_LIBUNWIND
447/* if this is true do the stack trace for every system call */
448extern bool stack_trace_enabled;
449#endif
Denys Vlasenkoeec8d5d2013-02-14 03:29:48 +0100450extern unsigned ptrace_setoptions;
451extern unsigned max_strlen;
452extern unsigned os_release;
453#undef KERNEL_VERSION
454#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
Denys Vlasenkoa50d2a82012-03-15 12:49:52 +0100455
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000456void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
457void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
458void error_msg_and_die(const char *fmt, ...)
459 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
Elvira Khabirovaa2fdfe92015-11-26 17:18:00 +0300460void error_msg_and_help(const char *fmt, ...)
461 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000462void perror_msg_and_die(const char *fmt, ...)
463 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
464void die_out_of_memory(void) ATTRIBUTE_NORETURN;
Denys Vlasenko75422762011-05-27 14:36:01 +0200465
Dmitry V. Levin3e9d71f2015-05-25 20:41:02 +0000466void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
467void *xcalloc(size_t nmemb, size_t size)
468 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2));
469void *xreallocarray(void *ptr, size_t nmemb, size_t size)
470 ATTRIBUTE_ALLOC_SIZE((2, 3));
471char *xstrdup(const char *str) ATTRIBUTE_MALLOC;
472
Denys Vlasenko76da8312013-07-16 12:18:59 +0200473#if USE_CUSTOM_PRINTF
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200474/*
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200475 * See comment in vsprintf.c for allowed formats.
476 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
Denys Vlasenko6e4f3c12012-04-16 18:22:19 +0200477 */
478int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
479#else
480# define strace_vfprintf vfprintf
481#endif
482
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000483extern void set_sortby(const char *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100484extern void set_overhead(int);
Dmitry V. Levin30145dd2010-09-06 22:08:24 +0000485extern void qualify(const char *);
Denys Vlasenko5a2483b2013-07-01 12:49:14 +0200486extern void print_pc(struct tcb *);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100487extern int trace_syscall(struct tcb *);
Dmitry V. Levinac5133d2014-05-29 18:10:00 +0000488extern void count_syscall(struct tcb *, const struct timeval *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100489extern void call_summary(FILE *);
490
Dmitry V. Levin9a176c92015-02-13 21:56:50 +0000491extern void clear_regs(void);
Denys Vlasenkoce7d9532013-02-05 16:36:13 +0100492extern void get_regs(pid_t pid);
Denys Vlasenko8497b622015-03-21 17:51:52 +0100493extern int get_scno(struct tcb *tcp);
Mike Frysingerd2eaf672015-08-18 03:24:59 -0400494extern const char *syscall_name(long scno);
Dmitry V. Levin9a176c92015-02-13 21:56:50 +0000495
Dmitry V. Levin9af94a22015-09-18 01:54:59 +0000496extern bool is_erestart(struct tcb *);
Dmitry V. Levin3858b932015-09-18 01:54:59 +0000497extern void temporarily_clear_syserror(struct tcb *);
498extern void restore_cleared_syserror(struct tcb *);
499
Denys Vlasenko7e69ed92015-03-21 19:50:53 +0100500extern int umoven(struct tcb *, long, unsigned int, void *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100501#define umove(pid, addr, objp) \
Denys Vlasenko7e69ed92015-03-21 19:50:53 +0100502 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
Dmitry V. Levin332a3262015-07-05 22:09:29 +0000503extern int umoven_or_printaddr(struct tcb *, long, unsigned int, void *);
504#define umove_or_printaddr(pid, addr, objp) \
505 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
Dmitry V. Levin09a1a5a2015-09-14 23:02:29 +0000506extern int umove_ulong_or_printaddr(struct tcb *, long, unsigned long *);
Dmitry V. Levinb172a942015-09-15 02:17:32 +0000507extern int umove_ulong_array_or_printaddr(struct tcb *, long, unsigned long *, size_t);
Dmitry V. Levin97e59962015-01-14 08:05:45 +0000508extern int umovestr(struct tcb *, long, unsigned int, char *);
Denys Vlasenko752e5a02013-06-28 14:35:47 +0200509extern int upeek(int pid, long, long *);
Dmitry V. Levin78ed3f32015-03-23 00:04:27 +0000510
Dmitry V. Levin8e8d7d22015-03-23 23:14:08 +0000511#if defined ALPHA || defined IA64 || defined MIPS \
512 || defined SH || defined SPARC || defined SPARC64
Dmitry V. Levin78ed3f32015-03-23 00:04:27 +0000513# define HAVE_GETRVAL2
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100514extern long getrval2(struct tcb *);
Dmitry V. Levin78ed3f32015-03-23 00:04:27 +0000515#else
516# undef HAVE_GETRVAL2
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100517#endif
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100518
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000519extern const char *signame(const int);
Denys Vlasenko7239dbc2013-03-05 15:46:34 +0100520extern void pathtrace_select(const char *);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100521extern int pathtrace_match(struct tcb *);
Denys Vlasenko61ad0a42013-03-06 18:24:34 +0100522extern int getfdpath(struct tcb *, int, char *, unsigned);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100523
Dmitry V. Levined92d872016-04-28 18:32:45 +0000524extern const char *xlookup64(const struct xlat *, const uint64_t);
Dmitry V. Levin43242e62016-04-28 18:37:54 +0000525extern const char *xlat_search(const struct xlat *, const size_t, const uint64_t);
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100526
Dmitry V. Levinea1fea62015-03-31 19:45:08 +0000527extern unsigned long get_pagesize(void);
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000528extern int string_to_uint(const char *str);
Denys Vlasenkob338f2d2013-11-09 20:40:31 +0100529extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
Dmitry V. Levinccee1692012-03-25 21:49:48 +0000530
Dmitry V. Levin513e96e2015-01-26 01:17:08 +0000531#define QUOTE_0_TERMINATED 0x01
532#define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
533
Dmitry V. Levin3c17d1b2016-02-01 23:14:59 +0000534extern int string_quote(const char *, char *, unsigned int, unsigned int);
Dmitry V. Levin513e96e2015-01-26 01:17:08 +0000535extern int print_quoted_string(const char *, unsigned int, unsigned int);
536
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100537/* a refers to the lower numbered u_arg,
538 * b refers to the higher numbered u_arg
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100539 */
Dmitry V. Levinda126fb2015-12-14 11:57:59 +0000540#ifdef WORDS_BIGENDIAN
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100541# define LONG_LONG(a,b) \
542 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
Dmitry V. Levinda126fb2015-12-14 11:57:59 +0000543#else
544# define LONG_LONG(a,b) \
545 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
Denys Vlasenkod63b0d52012-03-23 11:26:36 +0100546#endif
Dmitry V. Levin1ea64732015-01-10 00:08:58 +0000547extern int getllval(struct tcb *, unsigned long long *, int);
Dmitry V. Levinf523f102015-02-17 22:47:25 +0000548extern int printllval(struct tcb *, const char *, int)
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000549 ATTRIBUTE_FORMAT((printf, 2, 0));
Denys Vlasenkoc9d0fc02013-02-17 22:41:33 +0100550
Dmitry V. Levin332a3262015-07-05 22:09:29 +0000551extern void printaddr(long);
Dmitry V. Levinc1328102016-04-28 18:42:10 +0000552extern void printxvals(const uint64_t, const char *, const struct xlat *, ...)
Dmitry V. Levinb0d23cc2016-04-01 00:52:01 +0000553 ATTRIBUTE_SENTINEL;
Andreas Schwabe5355de2009-10-27 16:56:43 +0100554extern int printargs(struct tcb *);
Dmitry V. Levin1ab6e252016-02-14 16:26:37 +0000555extern int printargs_u(struct tcb *);
556extern int printargs_d(struct tcb *);
557
Dmitry V. Levinc9146eb2016-04-28 18:19:27 +0000558extern void addflags(const struct xlat *, uint64_t);
Dmitry V. Levin00beed62016-04-28 18:55:18 +0000559extern int printflags64(const struct xlat *, uint64_t, const char *);
Dmitry V. Levin01c910c2016-04-28 18:49:36 +0000560extern const char *sprintflags64(const char *, const struct xlat *, uint64_t);
Dmitry V. Levin9514ac72014-12-06 03:53:16 +0000561extern const char *sprintmode(int);
Dmitry V. Levinb1a01b82014-12-06 03:53:16 +0000562extern const char *sprinttime(time_t);
Dmitry V. Levin93c9d1c2016-01-20 03:26:37 +0000563extern void dumpiov_in_msghdr(struct tcb *, long, unsigned long);
Masatake YAMATOa807dce2014-11-07 01:23:26 +0900564extern void dumpiov_in_mmsghdr(struct tcb *, long);
Dmitry V. Levin05a0af62016-01-20 00:17:02 +0000565extern void dumpiov_upto(struct tcb *, int, long, unsigned long);
566#define dumpiov(tcp, len, addr) \
567 dumpiov_upto((tcp), (len), (addr), (unsigned long) -1L)
Andreas Schwabe5355de2009-10-27 16:56:43 +0100568extern void dumpstr(struct tcb *, long, int);
Denys Vlasenkob5d43b82012-04-28 14:58:35 +0200569extern void printstr(struct tcb *, long, long);
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000570extern bool printnum_short(struct tcb *, long, const char *)
Dmitry V. Levinc88163e2015-07-05 22:09:29 +0000571 ATTRIBUTE_FORMAT((printf, 3, 0));
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000572extern bool printnum_int(struct tcb *, long, const char *)
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000573 ATTRIBUTE_FORMAT((printf, 3, 0));
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000574extern bool printnum_int64(struct tcb *, long, const char *)
Dmitry V. Levinc88163e2015-07-05 22:09:29 +0000575 ATTRIBUTE_FORMAT((printf, 3, 0));
Dmitry V. Levin2479ef02015-08-18 14:58:27 +0000576
577#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000578extern bool printnum_long_int(struct tcb *, long, const char *, const char *)
Dmitry V. Levin2479ef02015-08-18 14:58:27 +0000579 ATTRIBUTE_FORMAT((printf, 3, 0))
580 ATTRIBUTE_FORMAT((printf, 4, 0));
581# define printnum_slong(tcp, addr) \
582 printnum_long_int((tcp), (addr), "%" PRId64, "%d")
583# define printnum_ulong(tcp, addr) \
584 printnum_long_int((tcp), (addr), "%" PRIu64, "%u")
585# define printnum_ptr(tcp, addr) \
586 printnum_long_int((tcp), (addr), "%#" PRIx64, "%#x")
587#elif SIZEOF_LONG > 4
588# define printnum_slong(tcp, addr) \
589 printnum_int64((tcp), (addr), "%" PRId64)
590# define printnum_ulong(tcp, addr) \
591 printnum_int64((tcp), (addr), "%" PRIu64)
592# define printnum_ptr(tcp, addr) \
593 printnum_int64((tcp), (addr), "%#" PRIx64)
594#else
595# define printnum_slong(tcp, addr) \
596 printnum_int((tcp), (addr), "%d")
597# define printnum_ulong(tcp, addr) \
598 printnum_int((tcp), (addr), "%u")
599# define printnum_ptr(tcp, addr) \
600 printnum_int((tcp), (addr), "%#x")
Dmitry V. Levinc88163e2015-07-05 22:09:29 +0000601#endif
Dmitry V. Levin2479ef02015-08-18 14:58:27 +0000602
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000603extern bool printpair_int(struct tcb *, long, const char *)
Dmitry V. Levin69127a32015-07-05 22:09:29 +0000604 ATTRIBUTE_FORMAT((printf, 3, 0));
Dmitry V. Levind77f6692015-08-18 21:57:27 +0000605extern bool printpair_int64(struct tcb *, long, const char *)
Dmitry V. Levin69127a32015-07-05 22:09:29 +0000606 ATTRIBUTE_FORMAT((printf, 3, 0));
Andreas Schwabe5355de2009-10-27 16:56:43 +0100607extern void printpath(struct tcb *, long);
Dmitry V. Levin3ed5d022014-09-10 13:46:04 +0000608extern void printpathn(struct tcb *, long, unsigned int);
Dmitry V. Levin2950de32015-09-18 17:44:16 +0000609#define TIMESPEC_TEXT_BUFSIZE \
610 (sizeof(intmax_t)*3 * 2 + sizeof("{tv_sec=%jd, tv_nsec=%jd}"))
Dmitry V. Levin31382132011-03-04 05:08:02 +0300611extern void printfd(struct tcb *, int);
Masatake YAMATOf605e922014-12-10 12:55:06 +0900612extern bool print_sockaddr_by_inode(const unsigned long, const char *);
Dmitry V. Levin3c17d1b2016-02-01 23:14:59 +0000613extern bool print_sockaddr_by_inode_cached(const unsigned long);
Dmitry V. Levin99db95d2014-02-05 04:13:18 +0000614extern void print_dirfd(struct tcb *, int);
Andreas Schwabe5355de2009-10-27 16:56:43 +0100615extern void printsock(struct tcb *, long, int);
616extern void print_sock_optmgmt(struct tcb *, long, int);
Sergei Trofimovich02a08fb2011-08-11 18:04:53 +0300617#ifdef ALPHA
618extern void printrusage32(struct tcb *, long);
Dmitry V. Levin4cb5ccc2015-09-18 18:02:50 +0000619extern const char *sprint_timeval32(struct tcb *tcp, long);
Dmitry V. Levinf1e3a322015-09-18 15:16:11 +0000620extern void print_timeval32(struct tcb *tcp, long);
621extern void print_timeval32_pair(struct tcb *tcp, long);
Dmitry V. Levin322be802015-09-17 20:23:31 +0000622extern void print_itimerval32(struct tcb *tcp, long);
Sergei Trofimovich02a08fb2011-08-11 18:04:53 +0300623#endif
Dmitry V. Levin1da7c952014-12-13 18:24:13 +0000624extern void printuid(const char *, const unsigned int);
Denys Vlasenko5e133aa2013-07-18 17:02:21 +0200625extern void print_sigset_addr_len(struct tcb *, long, long);
Dmitry V. Levin74219ea2015-03-06 01:47:18 +0000626extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
627#define tprintsigmask_addr(prefix, mask) \
628 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
Andreas Schwabe5355de2009-10-27 16:56:43 +0100629extern void printsignal(int);
Dmitry V. Levin88849682011-06-13 22:58:44 +0000630extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
Denys Vlasenkoe0bc2222012-04-28 14:26:18 +0200631extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long);
Elliott Hughes22e34b92014-09-23 19:09:50 -0700632extern void tprint_open_modes(int);
633extern const char *sprint_open_modes(int);
Dmitry V. Levin2af69032015-02-04 23:50:50 +0000634extern void print_seccomp_filter(struct tcb *tcp, unsigned long);
Grant Edwards8a082772011-04-07 20:25:40 +0000635
Dmitry V. Levin67c2f672016-04-26 00:21:26 +0000636struct strace_statfs;
637extern void print_struct_statfs(struct tcb *tcp, long);
638extern void print_struct_statfs64(struct tcb *tcp, long, unsigned long);
639
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000640extern int block_ioctl(struct tcb *, const unsigned int, long);
Etienne Gemsa4f750b92015-02-20 17:14:10 +0100641extern int evdev_ioctl(struct tcb *, const unsigned int, long);
Dmitry V. Levinc7afb482015-01-19 18:44:21 +0000642extern int loop_ioctl(struct tcb *, const unsigned int, long);
643extern int mtd_ioctl(struct tcb *, const unsigned int, long);
644extern int ptp_ioctl(struct tcb *, const unsigned int, long);
645extern int rtc_ioctl(struct tcb *, const unsigned int, long);
646extern int scsi_ioctl(struct tcb *, const unsigned int, long);
647extern int sock_ioctl(struct tcb *, const unsigned int, long);
648extern int term_ioctl(struct tcb *, const unsigned int, long);
649extern int ubi_ioctl(struct tcb *, const unsigned int, long);
650extern int v4l2_ioctl(struct tcb *, const unsigned int, long);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000651
Dmitry V. Levin447db452014-05-29 17:59:01 +0000652extern int tv_nz(const struct timeval *);
653extern int tv_cmp(const struct timeval *, const struct timeval *);
654extern double tv_float(const struct timeval *);
655extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *);
656extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *);
657extern void tv_mul(struct timeval *, const struct timeval *, int);
658extern void tv_div(struct timeval *, const struct timeval *, int);
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000659
Luca Clementi327064b2013-07-23 00:11:35 -0700660#ifdef USE_LIBUNWIND
Masatake YAMATO61413922014-04-16 15:33:02 +0900661extern void unwind_init(void);
662extern void unwind_tcb_init(struct tcb *tcp);
663extern void unwind_tcb_fin(struct tcb *tcp);
664extern void unwind_cache_invalidate(struct tcb* tcp);
665extern void unwind_print_stacktrace(struct tcb* tcp);
Masatake YAMATOf8e39d72014-04-16 15:33:06 +0900666extern void unwind_capture_stacktrace(struct tcb* tcp);
Luca Clementi327064b2013-07-23 00:11:35 -0700667#endif
668
Dmitry V. Levin01c910c2016-04-28 18:49:36 +0000669static inline const char *
670sprintflags(const char *prefix, const struct xlat *x, unsigned int flags)
671{
672 return sprintflags64(prefix, x, flags);
673}
674
Dmitry V. Levin00beed62016-04-28 18:55:18 +0000675static inline int
676printflags(const struct xlat *x, unsigned int flags, const char *dflt)
677{
678 return printflags64(x, flags, dflt);
679}
680
Dmitry V. Levin7d63aa52016-04-28 17:50:51 +0000681static inline void
Dmitry V. Levin482bab02016-04-28 18:15:20 +0000682printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
683{
684 printxvals(val, dflt, x, NULL);
685}
686
687static inline void
Dmitry V. Levin7d63aa52016-04-28 17:50:51 +0000688printxval(const struct xlat *x, const unsigned int val, const char *dflt)
689{
690 printxvals(val, dflt, x, NULL);
691}
692
Dmitry V. Levined92d872016-04-28 18:32:45 +0000693static inline const char *
694xlookup(const struct xlat *x, const unsigned int val)
695{
696 return xlookup64(x, val);
697}
698
Denys Vlasenko7de265d2012-03-13 11:44:31 +0100699/* Strace log generation machinery.
700 *
701 * printing_tcp: tcb which has incomplete line being printed right now.
702 * NULL if last line has been completed ('\n'-terminated).
703 * printleader(tcp) examines it, finishes incomplete line if needed,
704 * the sets it to tcp.
705 * line_ended() clears printing_tcp and resets ->curcol = 0.
706 * tcp->curcol == 0 check is also used to detect completeness
707 * of last line, since in -ff mode just checking printing_tcp for NULL
708 * is not enough.
709 *
710 * If you change this code, test log generation in both -f and -ff modes
711 * using:
712 * strace -oLOG -f[f] test/threaded_execve
713 * strace -oLOG -f[f] test/sigkill_rain
714 * strace -oLOG -f[f] -p "`pidof web_browser`"
715 */
716extern struct tcb *printing_tcp;
717extern void printleader(struct tcb *);
718extern void line_ended(void);
719extern void tabto(void);
Dmitry V. Levin5647cf82015-03-29 22:45:03 +0000720extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
Denys Vlasenko7de265d2012-03-13 11:44:31 +0100721extern void tprints(const char *str);
722
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100723#if SUPPORTED_PERSONALITIES > 1
724extern void set_personality(int personality);
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100725extern unsigned current_personality;
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100726#else
727# define set_personality(personality) ((void)0)
728# define current_personality 0
Denys Vlasenkoae8643e2013-02-15 14:55:14 +0100729#endif
730
731#if SUPPORTED_PERSONALITIES == 1
732# define current_wordsize PERSONALITY0_WORDSIZE
733#else
734# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
735# define current_wordsize PERSONALITY0_WORDSIZE
736# else
737extern unsigned current_wordsize;
738# endif
Denys Vlasenko9fd4f962012-03-19 09:36:42 +0100739#endif
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000740
Denys Vlasenkoe015d2d2013-02-15 14:58:52 +0100741/* In many, many places we play fast and loose and use
742 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
743 * We probably need to use widen_to_long() instead:
744 */
745#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
746# define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
747#else
748# define widen_to_long(v) ((long)(v))
749#endif
750
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100751extern const struct_sysent sysent0[];
752extern const char *const errnoent0[];
753extern const char *const signalent0[];
754extern const struct_ioctlent ioctlent0[];
755extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
756#define qual_flags (qual_vec[current_personality])
Elvira Khabirova09294222015-08-04 01:47:02 +0300757
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100758#if SUPPORTED_PERSONALITIES > 1
Denys Vlasenkoa9fe13c2013-02-22 13:26:10 +0100759extern const struct_sysent *sysent;
Denys Vlasenko39fca622011-08-20 02:12:33 +0200760extern const char *const *errnoent;
Roland McGrathee36ce12004-09-04 03:53:10 +0000761extern const char *const *signalent;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100762extern const struct_ioctlent *ioctlent;
763#else
764# define sysent sysent0
765# define errnoent errnoent0
766# define signalent signalent0
767# define ioctlent ioctlent0
768#endif
Elvira Khabirova09294222015-08-04 01:47:02 +0300769
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100770extern unsigned nsyscalls;
771extern unsigned nerrnos;
Denys Vlasenkoafc64032011-08-23 13:29:01 +0200772extern unsigned nsignals;
Denys Vlasenko9cbc15b2013-02-22 13:37:36 +0100773extern unsigned nioctlents;
774extern unsigned num_quals;
Wichert Akkerman76baf7c1999-02-19 00:21:36 +0000775
Elvira Khabirova09294222015-08-04 01:47:02 +0300776#if SUPPORTED_PERSONALITIES > 1
777# include "printers.h"
Elvira Khabirova09294222015-08-04 01:47:02 +0300778#else
779# include "native_printer_decls.h"
Elvira Khabirova09294222015-08-04 01:47:02 +0300780#endif
781
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100782/*
783 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
784 */
Denys Vlasenko5721cdb2013-02-16 13:22:38 +0100785#define SCNO_IS_VALID(scno) \
Denys Vlasenkoc956ef02013-02-16 14:25:56 +0100786 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
787
788/* Only ensures that sysent[scno] isn't out of range */
789#define SCNO_IN_RANGE(scno) \
790 ((unsigned long)(scno) < nsyscalls)
Dmitry V. Levina0bd3742015-04-07 01:36:50 +0000791
Elvira Khabirova09294222015-08-04 01:47:02 +0300792#define MPERS_FUNC_NAME__(prefix, name) prefix ## name
793#define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
794#define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
795
Szabolcs Nagy34683e32015-12-15 18:32:17 +0000796#define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
Dmitry V. Levina0bd3742015-04-07 01:36:50 +0000797
Szabolcs Nagy34683e32015-12-15 18:32:17 +0000798#define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
Elvira Khabirova09294222015-08-04 01:47:02 +0300799
800#define MPERS_PRINTER_DECL(type, name) type MPERS_FUNC_NAME(name)
Jeff Mahoney1f3482b2016-03-31 00:34:17 -0400801
802/*
803 * The kernel used to define 64-bit types on 64-bit systems on a per-arch
804 * basis. Some architectures would use unsigned long and others would use
805 * unsigned long long. These types were exported as part of the
806 * kernel-userspace ABI and now must be maintained forever. This matches
807 * what the kernel exports for each architecture so we don't need to cast
808 * every printing of __u64 or __s64 to stdint types.
809 */
810#if SIZEOF_LONG == 4
811# define PRI__64 "ll"
812#elif defined ALPHA || defined IA64 || defined MIPS || defined POWERPC
813# define PRI__64 "l"
814#else
815# define PRI__64 "ll"
816#endif
817
Dmitry V. Levine5c88492016-04-22 23:54:58 +0000818#define PRI__d64 PRI__64"d"
Jeff Mahoney1f3482b2016-03-31 00:34:17 -0400819#define PRI__u64 PRI__64"u"
820#define PRI__x64 PRI__64"x"