1/* 2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl> 3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> 4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#ifdef HAVE_CONFIG_H 31# include "config.h" 32#endif 33 34#include <features.h> 35#ifdef HAVE_STDBOOL_H 36# include <stdbool.h> 37#endif 38#include <stdint.h> 39#include <inttypes.h> 40#include <sys/types.h> 41#ifdef STDC_HEADERS 42# include <stddef.h> 43#endif 44#include <unistd.h> 45#include <stdlib.h> 46#include <stdio.h> 47/* 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> */ 51#include <string.h> 52#include <errno.h> 53#include <time.h> 54#include <sys/time.h> 55#include <sys/syscall.h> 56 57#include "mpers_type.h" 58#include "gcc_compat.h" 59 60#ifndef HAVE_STRERROR 61const char *strerror(int); 62#endif 63#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 72#ifndef offsetof 73# define offsetof(type, member) \ 74 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL)) 75#endif 76 77#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 78 79/* 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 88/* 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 95/* Configuration section */ 96#ifndef DEFAULT_STRLEN 97/* default maximum # of bytes printed in `printstr', change with -s switch */ 98# define DEFAULT_STRLEN 32 99#endif 100#ifndef DEFAULT_ACOLUMN 101# define DEFAULT_ACOLUMN 40 /* default alignment column for results */ 102#endif 103/* 104 * Maximum number of args to a syscall. 105 * 106 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS! 107 * linux/<ARCH>/syscallent*.h: 108 * all have nargs <= 6 except mips o32 which has nargs <= 7. 109 */ 110#ifndef MAX_ARGS 111# ifdef LINUX_MIPSO32 112# define MAX_ARGS 7 113# else 114# define MAX_ARGS 6 115# endif 116#endif 117/* default sorting method for call profiling */ 118#ifndef DEFAULT_SORTBY 119# define DEFAULT_SORTBY "time" 120#endif 121/* 122 * Experimental code using PTRACE_SEIZE can be enabled here. 123 * This needs Linux kernel 3.4.x or later to work. 124 */ 125#define USE_SEIZE 1 126/* To force NOMMU build, set to 1 */ 127#define NOMMU_SYSTEM 0 128/* 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 0 137 138#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 150 151#if defined(SPARC) || defined(SPARC64) 152# define PERSONALITY0_WORDSIZE 4 153# if defined(SPARC64) 154# define SUPPORTED_PERSONALITIES 2 155# define PERSONALITY1_WORDSIZE 8 156# 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 161# endif 162#endif 163 164#ifdef X86_64 165# define SUPPORTED_PERSONALITIES 3 166# define PERSONALITY0_WORDSIZE 8 167# define PERSONALITY1_WORDSIZE 4 168# define PERSONALITY2_WORDSIZE 4 169# 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 179#endif 180 181#ifdef X32 182# define SUPPORTED_PERSONALITIES 2 183# define PERSONALITY0_WORDSIZE 4 184# define PERSONALITY1_WORDSIZE 4 185# 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 190#endif 191 192#ifdef ARM 193/* one personality */ 194#endif 195 196#ifdef AARCH64 197/* The existing ARM personality, then AArch64 */ 198# define SUPPORTED_PERSONALITIES 2 199# define PERSONALITY0_WORDSIZE 8 200# define PERSONALITY1_WORDSIZE 4 201# ifdef HAVE_M32_MPERS 202# 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" 205# endif 206#endif 207 208#ifdef POWERPC64 209# define SUPPORTED_PERSONALITIES 2 210# define PERSONALITY0_WORDSIZE 8 211# define PERSONALITY1_WORDSIZE 4 212# 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 217#endif 218 219#ifdef TILE 220# define SUPPORTED_PERSONALITIES 2 221# define PERSONALITY0_WORDSIZE 8 222# define PERSONALITY1_WORDSIZE 4 223# ifdef __tilepro__ 224# define DEFAULT_PERSONALITY 1 225# endif 226# 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 231#endif 232 233#ifndef SUPPORTED_PERSONALITIES 234# define SUPPORTED_PERSONALITIES 1 235#endif 236#ifndef DEFAULT_PERSONALITY 237# define DEFAULT_PERSONALITY 0 238#endif 239#ifndef PERSONALITY0_WORDSIZE 240# define PERSONALITY0_WORDSIZE SIZEOF_LONG 241#endif 242 243#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 271typedef struct sysent { 272 unsigned nargs; 273 int sys_flags; 274 int sen; 275 int (*sys_func)(); 276 const char *sys_name; 277} struct_sysent; 278 279typedef struct ioctlent { 280 const char *symbol; 281 unsigned int code; 282} struct_ioctlent; 283 284/* Trace Control Block */ 285struct tcb { 286 int flags; /* See below for TCB_ values */ 287 int pid; /* If 0, this tcb is free */ 288 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */ 289 int u_error; /* Error code */ 290 long scno; /* System call number */ 291 long u_arg[MAX_ARGS]; /* System call arguments */ 292#if defined(LINUX_MIPSN32) || defined(X32) 293 long long ext_arg[MAX_ARGS]; 294 long long u_lrval; /* long long return value */ 295#endif 296 long u_rval; /* Return value */ 297#if SUPPORTED_PERSONALITIES > 1 298 unsigned int currpers; /* Personality at the time of scno update */ 299#endif 300 int sys_func_rval; /* Syscall entry parser's return value */ 301 int curcol; /* Output column for this process */ 302 FILE *outf; /* Output file for this process */ 303 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */ 304 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */ 305 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */ 306 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 */ 309 310#ifdef USE_LIBUNWIND 311 struct UPT_info* libunwind_ui; 312 struct mmap_cache_t* mmap_cache; 313 unsigned int mmap_cache_size; 314 unsigned int mmap_cache_generation; 315 struct queue_t* queue; 316#endif 317}; 318 319/* TCB flags */ 320/* We have attached to this process, but did not see it stopping yet */ 321#define TCB_STARTUP 0x01 322#define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */ 323/* 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. 335 * 336 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable. 337 */ 338#define TCB_INSYSCALL 0x04 339#define TCB_ATTACHED 0x08 /* We attached to it already */ 340#define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */ 341#define TCB_FILTERED 0x20 /* This system call has been filtered out */ 342 343/* qualifier flags */ 344#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 */ 349#define QUAL_READ 0x020 /* dump data read on this file descriptor */ 350#define QUAL_WRITE 0x040 /* dump data written to this file descriptor */ 351typedef uint8_t qualbits_t; 352#define UNDEFINED_SCNO 0x100 /* Used only in tcp->qual_flg */ 353 354#define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE) 355 356#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL)) 357#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL) 358#define syserror(tcp) ((tcp)->u_error != 0) 359#define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE) 360#define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV) 361#define filtered(tcp) ((tcp)->flags & TCB_FILTERED) 362 363struct xlat { 364 unsigned int val; 365 const char *str; 366}; 367#define XLAT(x) { x, #x } 368#define XLAT_END { 0, NULL } 369 370extern const struct xlat addrfams[]; 371extern const struct xlat at_flags[]; 372extern const struct xlat dirent_types[]; 373extern const struct xlat open_access_modes[]; 374extern const struct xlat open_mode_flags[]; 375extern const struct xlat resource_flags[]; 376extern const struct xlat whence_codes[]; 377 378/* Format of syscall return values */ 379#define RVAL_DECIMAL 000 /* decimal format */ 380#define RVAL_HEX 001 /* hex format */ 381#define RVAL_OCTAL 002 /* octal format */ 382#define RVAL_UDECIMAL 003 /* unsigned decimal format */ 383#if defined(LINUX_MIPSN32) || defined(X32) 384# if 0 /* unused so far */ 385# define RVAL_LDECIMAL 004 /* long decimal format */ 386# define RVAL_LHEX 005 /* long hex format */ 387# define RVAL_LOCTAL 006 /* long octal format */ 388# endif 389# define RVAL_LUDECIMAL 007 /* long unsigned decimal format */ 390#endif 391#define RVAL_FD 010 /* file descriptor */ 392#define RVAL_MASK 017 /* mask for these values */ 393 394#define RVAL_STR 020 /* Print `auxstr' field after return val */ 395#define RVAL_NONE 040 /* Print nothing */ 396 397#define RVAL_DECODED 0100 /* syscall decoding finished */ 398 399#define TRACE_FILE 001 /* Trace file-related syscalls. */ 400#define TRACE_IPC 002 /* Trace IPC-related syscalls. */ 401#define TRACE_NETWORK 004 /* Trace network-related syscalls. */ 402#define TRACE_PROCESS 010 /* Trace process-related syscalls. */ 403#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */ 404#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */ 405#define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */ 406#define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */ 407#define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */ 408#define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */ 409#define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */ 410 411#define IOCTL_NUMBER_UNKNOWN 0 412#define IOCTL_NUMBER_HANDLED 1 413#define IOCTL_NUMBER_STOP_LOOKUP 010 414 415#define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL) 416 417#if defined(ARM) || defined(AARCH64) \ 418 || defined(I386) || defined(X32) || defined(X86_64) \ 419 || defined(IA64) \ 420 || defined(BFIN) \ 421 || defined(M68K) \ 422 || defined(MICROBLAZE) \ 423 || defined(S390) \ 424 || defined(SH) || defined(SH64) \ 425 || defined(SPARC) || defined(SPARC64) \ 426 /**/ 427# define NEED_UID16_PARSERS 1 428#else 429# define NEED_UID16_PARSERS 0 430#endif 431 432typedef enum { 433 CFLAG_NONE = 0, 434 CFLAG_ONLY_STATS, 435 CFLAG_BOTH 436} cflag_t; 437extern cflag_t cflag; 438extern bool debug_flag; 439extern bool Tflag; 440extern bool iflag; 441extern bool count_wallclock; 442extern unsigned int qflag; 443extern bool not_failing_only; 444extern unsigned int show_fd_path; 445extern bool hide_log_until_execve; 446/* are we filtering traces based on paths? */ 447extern const char **paths_selected; 448#define tracing_paths (paths_selected != NULL) 449extern unsigned xflag; 450extern unsigned followfork; 451#ifdef USE_LIBUNWIND 452/* if this is true do the stack trace for every system call */ 453extern bool stack_trace_enabled; 454#endif 455extern unsigned ptrace_setoptions; 456extern unsigned max_strlen; 457extern unsigned os_release; 458#undef KERNEL_VERSION 459#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) 460 461void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 462void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 463void error_msg_and_die(const char *fmt, ...) 464 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 465void error_msg_and_help(const char *fmt, ...) 466 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 467void perror_msg_and_die(const char *fmt, ...) 468 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 469void die_out_of_memory(void) ATTRIBUTE_NORETURN; 470 471void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1)); 472void *xcalloc(size_t nmemb, size_t size) 473 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2)); 474void *xreallocarray(void *ptr, size_t nmemb, size_t size) 475 ATTRIBUTE_ALLOC_SIZE((2, 3)); 476char *xstrdup(const char *str) ATTRIBUTE_MALLOC; 477 478#if USE_CUSTOM_PRINTF 479/* 480 * See comment in vsprintf.c for allowed formats. 481 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u. 482 */ 483int strace_vfprintf(FILE *fp, const char *fmt, va_list args); 484#else 485# define strace_vfprintf vfprintf 486#endif 487 488extern void set_sortby(const char *); 489extern void set_overhead(int); 490extern void qualify(const char *); 491extern void print_pc(struct tcb *); 492extern int trace_syscall(struct tcb *); 493extern void count_syscall(struct tcb *, const struct timeval *); 494extern void call_summary(FILE *); 495 496extern void clear_regs(void); 497extern void get_regs(pid_t pid); 498extern int get_scno(struct tcb *tcp); 499extern const char *syscall_name(long scno); 500 501extern bool is_erestart(struct tcb *); 502extern void temporarily_clear_syserror(struct tcb *); 503extern void restore_cleared_syserror(struct tcb *); 504 505extern int umoven(struct tcb *, long, unsigned int, void *); 506#define umove(pid, addr, objp) \ 507 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp)) 508extern int umoven_or_printaddr(struct tcb *, long, unsigned int, void *); 509#define umove_or_printaddr(pid, addr, objp) \ 510 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp)) 511extern int umove_ulong_or_printaddr(struct tcb *, long, unsigned long *); 512extern int umove_ulong_array_or_printaddr(struct tcb *, long, unsigned long *, size_t); 513extern int umovestr(struct tcb *, long, unsigned int, char *); 514extern int upeek(int pid, long, long *); 515 516#if defined ALPHA || defined IA64 || defined MIPS \ 517 || defined SH || defined SPARC || defined SPARC64 518# define HAVE_GETRVAL2 519extern long getrval2(struct tcb *); 520#else 521# undef HAVE_GETRVAL2 522#endif 523 524extern const char *signame(const int); 525extern void pathtrace_select(const char *); 526extern int pathtrace_match(struct tcb *); 527extern int getfdpath(struct tcb *, int, char *, unsigned); 528 529extern const char *xlookup(const struct xlat *, const unsigned int); 530extern const char *xlat_search(const struct xlat *, const size_t, const unsigned int); 531 532extern unsigned long get_pagesize(void); 533extern int string_to_uint(const char *str); 534extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits); 535 536#define QUOTE_0_TERMINATED 0x01 537#define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02 538 539extern int print_quoted_string(const char *, unsigned int, unsigned int); 540 541/* a refers to the lower numbered u_arg, 542 * b refers to the higher numbered u_arg 543 */ 544#ifdef WORDS_BIGENDIAN 545# define LONG_LONG(a,b) \ 546 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32))) 547#else 548# define LONG_LONG(a,b) \ 549 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32))) 550#endif 551extern int getllval(struct tcb *, unsigned long long *, int); 552extern int printllval(struct tcb *, const char *, int) 553 ATTRIBUTE_FORMAT((printf, 2, 0)); 554 555extern void printaddr(long); 556extern void printxvals(const unsigned int, const char *, const struct xlat *, ...); 557#define printxval(xlat, val, dflt) printxvals(val, dflt, xlat, NULL) 558extern int printargs(struct tcb *); 559extern int printargs_lu(struct tcb *); 560extern int printargs_ld(struct tcb *); 561extern void addflags(const struct xlat *, int); 562extern int printflags(const struct xlat *, int, const char *); 563extern const char *sprintflags(const char *, const struct xlat *, int); 564extern const char *sprintmode(int); 565extern const char *sprinttime(time_t); 566extern void dumpiov_in_msghdr(struct tcb *, long); 567extern void dumpiov_in_mmsghdr(struct tcb *, long); 568extern void dumpiov(struct tcb *, int, long); 569extern void dumpstr(struct tcb *, long, int); 570extern void printstr(struct tcb *, long, long); 571extern bool printnum_short(struct tcb *, long, const char *) 572 ATTRIBUTE_FORMAT((printf, 3, 0)); 573extern bool printnum_int(struct tcb *, long, const char *) 574 ATTRIBUTE_FORMAT((printf, 3, 0)); 575extern bool printnum_int64(struct tcb *, long, const char *) 576 ATTRIBUTE_FORMAT((printf, 3, 0)); 577 578#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4 579extern bool printnum_long_int(struct tcb *, long, const char *, const char *) 580 ATTRIBUTE_FORMAT((printf, 3, 0)) 581 ATTRIBUTE_FORMAT((printf, 4, 0)); 582# define printnum_slong(tcp, addr) \ 583 printnum_long_int((tcp), (addr), "%" PRId64, "%d") 584# define printnum_ulong(tcp, addr) \ 585 printnum_long_int((tcp), (addr), "%" PRIu64, "%u") 586# define printnum_ptr(tcp, addr) \ 587 printnum_long_int((tcp), (addr), "%#" PRIx64, "%#x") 588#elif SIZEOF_LONG > 4 589# define printnum_slong(tcp, addr) \ 590 printnum_int64((tcp), (addr), "%" PRId64) 591# define printnum_ulong(tcp, addr) \ 592 printnum_int64((tcp), (addr), "%" PRIu64) 593# define printnum_ptr(tcp, addr) \ 594 printnum_int64((tcp), (addr), "%#" PRIx64) 595#else 596# define printnum_slong(tcp, addr) \ 597 printnum_int((tcp), (addr), "%d") 598# define printnum_ulong(tcp, addr) \ 599 printnum_int((tcp), (addr), "%u") 600# define printnum_ptr(tcp, addr) \ 601 printnum_int((tcp), (addr), "%#x") 602#endif 603 604extern bool printpair_int(struct tcb *, long, const char *) 605 ATTRIBUTE_FORMAT((printf, 3, 0)); 606extern bool printpair_int64(struct tcb *, long, const char *) 607 ATTRIBUTE_FORMAT((printf, 3, 0)); 608extern void printpath(struct tcb *, long); 609extern void printpathn(struct tcb *, long, unsigned int); 610#define TIMESPEC_TEXT_BUFSIZE \ 611 (sizeof(intmax_t)*3 * 2 + sizeof("{tv_sec=%jd, tv_nsec=%jd}")) 612extern void printfd(struct tcb *, int); 613extern bool print_sockaddr_by_inode(const unsigned long, const char *); 614extern void print_dirfd(struct tcb *, int); 615extern void printsock(struct tcb *, long, int); 616extern void print_sock_optmgmt(struct tcb *, long, int); 617#ifdef ALPHA 618extern void printrusage32(struct tcb *, long); 619extern const char *sprint_timeval32(struct tcb *tcp, long); 620extern void print_timeval32(struct tcb *tcp, long); 621extern void print_timeval32_pair(struct tcb *tcp, long); 622extern void print_itimerval32(struct tcb *tcp, long); 623#endif 624extern void printuid(const char *, const unsigned int); 625extern void print_sigset_addr_len(struct tcb *, long, long); 626extern const char *sprintsigmask_n(const char *, const void *, unsigned int); 627#define tprintsigmask_addr(prefix, mask) \ 628 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask))) 629extern void printsignal(int); 630extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov); 631extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long); 632extern void tprint_open_modes(int); 633extern const char *sprint_open_modes(int); 634extern void print_seccomp_filter(struct tcb *tcp, unsigned long); 635 636extern int block_ioctl(struct tcb *, const unsigned int, long); 637extern int evdev_ioctl(struct tcb *, const unsigned int, long); 638extern int loop_ioctl(struct tcb *, const unsigned int, long); 639extern int mtd_ioctl(struct tcb *, const unsigned int, long); 640extern int ptp_ioctl(struct tcb *, const unsigned int, long); 641extern int rtc_ioctl(struct tcb *, const unsigned int, long); 642extern int scsi_ioctl(struct tcb *, const unsigned int, long); 643extern int sock_ioctl(struct tcb *, const unsigned int, long); 644extern int term_ioctl(struct tcb *, const unsigned int, long); 645extern int ubi_ioctl(struct tcb *, const unsigned int, long); 646extern int v4l2_ioctl(struct tcb *, const unsigned int, long); 647 648extern int tv_nz(const struct timeval *); 649extern int tv_cmp(const struct timeval *, const struct timeval *); 650extern double tv_float(const struct timeval *); 651extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *); 652extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *); 653extern void tv_mul(struct timeval *, const struct timeval *, int); 654extern void tv_div(struct timeval *, const struct timeval *, int); 655 656#ifdef USE_LIBUNWIND 657extern void unwind_init(void); 658extern void unwind_tcb_init(struct tcb *tcp); 659extern void unwind_tcb_fin(struct tcb *tcp); 660extern void unwind_cache_invalidate(struct tcb* tcp); 661extern void unwind_print_stacktrace(struct tcb* tcp); 662extern void unwind_capture_stacktrace(struct tcb* tcp); 663#endif 664 665/* Strace log generation machinery. 666 * 667 * printing_tcp: tcb which has incomplete line being printed right now. 668 * NULL if last line has been completed ('\n'-terminated). 669 * printleader(tcp) examines it, finishes incomplete line if needed, 670 * the sets it to tcp. 671 * line_ended() clears printing_tcp and resets ->curcol = 0. 672 * tcp->curcol == 0 check is also used to detect completeness 673 * of last line, since in -ff mode just checking printing_tcp for NULL 674 * is not enough. 675 * 676 * If you change this code, test log generation in both -f and -ff modes 677 * using: 678 * strace -oLOG -f[f] test/threaded_execve 679 * strace -oLOG -f[f] test/sigkill_rain 680 * strace -oLOG -f[f] -p "`pidof web_browser`" 681 */ 682extern struct tcb *printing_tcp; 683extern void printleader(struct tcb *); 684extern void line_ended(void); 685extern void tabto(void); 686extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 687extern void tprints(const char *str); 688 689#if SUPPORTED_PERSONALITIES > 1 690extern void set_personality(int personality); 691extern unsigned current_personality; 692#else 693# define set_personality(personality) ((void)0) 694# define current_personality 0 695#endif 696 697#if SUPPORTED_PERSONALITIES == 1 698# define current_wordsize PERSONALITY0_WORDSIZE 699#else 700# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE 701# define current_wordsize PERSONALITY0_WORDSIZE 702# else 703extern unsigned current_wordsize; 704# endif 705#endif 706 707/* In many, many places we play fast and loose and use 708 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc. 709 * We probably need to use widen_to_long() instead: 710 */ 711#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4 712# define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v)) 713#else 714# define widen_to_long(v) ((long)(v)) 715#endif 716 717extern const struct_sysent sysent0[]; 718extern const char *const errnoent0[]; 719extern const char *const signalent0[]; 720extern const struct_ioctlent ioctlent0[]; 721extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES]; 722#define qual_flags (qual_vec[current_personality]) 723 724#if SUPPORTED_PERSONALITIES > 1 725extern const struct_sysent *sysent; 726extern const char *const *errnoent; 727extern const char *const *signalent; 728extern const struct_ioctlent *ioctlent; 729#else 730# define sysent sysent0 731# define errnoent errnoent0 732# define signalent signalent0 733# define ioctlent ioctlent0 734#endif 735 736extern unsigned nsyscalls; 737extern unsigned nerrnos; 738extern unsigned nsignals; 739extern unsigned nioctlents; 740extern unsigned num_quals; 741 742#if SUPPORTED_PERSONALITIES > 1 743# include "printers.h" 744#else 745# include "native_printer_decls.h" 746#endif 747 748/* 749 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name 750 */ 751#define SCNO_IS_VALID(scno) \ 752 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func) 753 754/* Only ensures that sysent[scno] isn't out of range */ 755#define SCNO_IN_RANGE(scno) \ 756 ((unsigned long)(scno) < nsyscalls) 757 758#define MPERS_FUNC_NAME__(prefix, name) prefix ## name 759#define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name) 760#define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name) 761 762#define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name) 763 764#define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp) 765 766#define MPERS_PRINTER_DECL(type, name) type MPERS_FUNC_NAME(name) 767