defs.h revision 54646b8e057443f0b76afe9a231eae63afbf5d5a
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#ifndef HAVE_STRERROR 58const char *strerror(int); 59#endif 60#ifndef HAVE_STPCPY 61/* Some libc have stpcpy, some don't. Sigh... 62 * Roll our private implementation... 63 */ 64#undef stpcpy 65#define stpcpy strace_stpcpy 66extern char *stpcpy(char *dst, const char *src); 67#endif 68 69#if defined __GNUC__ && defined __GNUC_MINOR__ 70# define GNUC_PREREQ(maj, min) \ 71 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) 72#else 73# define __attribute__(x) /* empty */ 74# define GNUC_PREREQ(maj, min) 0 75#endif 76 77#if GNUC_PREREQ(2, 5) 78# define ATTRIBUTE_NORETURN __attribute__((__noreturn__)) 79#else 80# define ATTRIBUTE_NORETURN /* empty */ 81#endif 82 83#if GNUC_PREREQ(2, 7) 84# define ATTRIBUTE_FORMAT(args) __attribute__((__format__ args)) 85# define ATTRIBUTE_ALIGNED(arg) __attribute__((__aligned__(arg))) 86# define ATTRIBUTE_PACKED __attribute__((__packed__)) 87#else 88# define ATTRIBUTE_FORMAT(args) /* empty */ 89# define ATTRIBUTE_ALIGNED(arg) /* empty */ 90# define ATTRIBUTE_PACKED /* empty */ 91#endif 92 93#if GNUC_PREREQ(3, 0) 94# define ATTRIBUTE_MALLOC __attribute__((__malloc__)) 95#else 96# define ATTRIBUTE_MALLOC /* empty */ 97#endif 98 99#if GNUC_PREREQ(3, 1) 100# define ATTRIBUTE_NOINLINE __attribute__((__noinline__)) 101#else 102# define ATTRIBUTE_NOINLINE /* empty */ 103#endif 104 105#if GNUC_PREREQ(4, 3) 106# define ATTRIBUTE_ALLOC_SIZE(args) __attribute__((__alloc_size__ args)) 107#else 108# define ATTRIBUTE_ALLOC_SIZE(args) /* empty */ 109#endif 110 111#ifndef offsetof 112# define offsetof(type, member) \ 113 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL)) 114#endif 115 116#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 117 118/* macros */ 119#ifndef MAX 120# define MAX(a, b) (((a) > (b)) ? (a) : (b)) 121#endif 122#ifndef MIN 123# define MIN(a, b) (((a) < (b)) ? (a) : (b)) 124#endif 125#define CLAMP(val, min, max) MIN(MAX(min, val), max) 126 127/* Glibc has an efficient macro for sigemptyset 128 * (it just does one or two assignments of 0 to internal vector of longs). 129 */ 130#if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset) 131# define sigemptyset __sigemptyset 132#endif 133 134/* Configuration section */ 135#ifndef DEFAULT_STRLEN 136/* default maximum # of bytes printed in `printstr', change with -s switch */ 137# define DEFAULT_STRLEN 32 138#endif 139#ifndef DEFAULT_ACOLUMN 140# define DEFAULT_ACOLUMN 40 /* default alignment column for results */ 141#endif 142/* 143 * Maximum number of args to a syscall. 144 * 145 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS! 146 * linux/<ARCH>/syscallent*.h: 147 * all have nargs <= 6 except mips o32 which has nargs <= 7. 148 */ 149#ifndef MAX_ARGS 150# ifdef LINUX_MIPSO32 151# define MAX_ARGS 7 152# else 153# define MAX_ARGS 6 154# endif 155#endif 156/* default sorting method for call profiling */ 157#ifndef DEFAULT_SORTBY 158# define DEFAULT_SORTBY "time" 159#endif 160/* 161 * Experimental code using PTRACE_SEIZE can be enabled here. 162 * This needs Linux kernel 3.4.x or later to work. 163 */ 164#define USE_SEIZE 1 165/* To force NOMMU build, set to 1 */ 166#define NOMMU_SYSTEM 0 167/* 168 * Set to 1 to use speed-optimized vfprintf implementation. 169 * It results in strace using about 5% less CPU in user space 170 * (compared to glibc version). 171 * But strace spends a lot of time in kernel space, 172 * so overall it does not appear to be a significant win. 173 * Thus disabled by default. 174 */ 175#define USE_CUSTOM_PRINTF 0 176 177#ifndef ERESTARTSYS 178# define ERESTARTSYS 512 179#endif 180#ifndef ERESTARTNOINTR 181# define ERESTARTNOINTR 513 182#endif 183#ifndef ERESTARTNOHAND 184# define ERESTARTNOHAND 514 185#endif 186#ifndef ERESTART_RESTARTBLOCK 187# define ERESTART_RESTARTBLOCK 516 188#endif 189 190#if defined(SPARC) || defined(SPARC64) 191# define PERSONALITY0_WORDSIZE 4 192# if defined(SPARC64) 193# define SUPPORTED_PERSONALITIES 2 194# define PERSONALITY1_WORDSIZE 8 195# endif 196#endif 197 198#ifdef X86_64 199# define SUPPORTED_PERSONALITIES 3 200# define PERSONALITY0_WORDSIZE 8 201# define PERSONALITY1_WORDSIZE 4 202# define PERSONALITY2_WORDSIZE 4 203#endif 204 205#ifdef X32 206# define SUPPORTED_PERSONALITIES 2 207# define PERSONALITY0_WORDSIZE 4 208# define PERSONALITY1_WORDSIZE 4 209#endif 210 211#ifdef ARM 212/* one personality */ 213#endif 214 215#ifdef AARCH64 216/* The existing ARM personality, then AArch64 */ 217# define SUPPORTED_PERSONALITIES 2 218# define PERSONALITY0_WORDSIZE 4 219# define PERSONALITY1_WORDSIZE 8 220# define DEFAULT_PERSONALITY 1 221#endif 222 223#ifdef POWERPC64 224# define SUPPORTED_PERSONALITIES 2 225# define PERSONALITY0_WORDSIZE 8 226# define PERSONALITY1_WORDSIZE 4 227#endif 228 229#ifdef TILE 230# define SUPPORTED_PERSONALITIES 2 231# define PERSONALITY0_WORDSIZE 8 232# define PERSONALITY1_WORDSIZE 4 233# ifdef __tilepro__ 234# define DEFAULT_PERSONALITY 1 235# endif 236#endif 237 238#ifndef SUPPORTED_PERSONALITIES 239# define SUPPORTED_PERSONALITIES 1 240#endif 241#ifndef DEFAULT_PERSONALITY 242# define DEFAULT_PERSONALITY 0 243#endif 244#ifndef PERSONALITY0_WORDSIZE 245# define PERSONALITY0_WORDSIZE SIZEOF_LONG 246#endif 247 248typedef struct sysent { 249 unsigned nargs; 250 int sys_flags; 251 int sen; 252 int (*sys_func)(); 253 const char *sys_name; 254} struct_sysent; 255 256typedef struct ioctlent { 257 const char *symbol; 258 unsigned int code; 259} struct_ioctlent; 260 261/* Trace Control Block */ 262struct tcb { 263 int flags; /* See below for TCB_ values */ 264 int pid; /* If 0, this tcb is free */ 265 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */ 266 int u_error; /* Error code */ 267 long scno; /* System call number */ 268 long u_arg[MAX_ARGS]; /* System call arguments */ 269#if defined(LINUX_MIPSN32) || defined(X32) 270 long long ext_arg[MAX_ARGS]; 271 long long u_lrval; /* long long return value */ 272#endif 273 long u_rval; /* Return value */ 274#if SUPPORTED_PERSONALITIES > 1 275 unsigned int currpers; /* Personality at the time of scno update */ 276#endif 277 int sys_func_rval; /* Syscall entry parser's return value */ 278 int curcol; /* Output column for this process */ 279 FILE *outf; /* Output file for this process */ 280 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */ 281 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */ 282 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */ 283 struct timeval stime; /* System time usage as of last process wait */ 284 struct timeval dtime; /* Delta for system time usage */ 285 struct timeval etime; /* Syscall entry time */ 286 287#ifdef USE_LIBUNWIND 288 struct UPT_info* libunwind_ui; 289 struct mmap_cache_t* mmap_cache; 290 unsigned int mmap_cache_size; 291 unsigned int mmap_cache_generation; 292 struct queue_t* queue; 293#endif 294}; 295 296/* TCB flags */ 297/* We have attached to this process, but did not see it stopping yet */ 298#define TCB_STARTUP 0x01 299#define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */ 300/* 301 * Are we in system call entry or in syscall exit? 302 * 303 * This bit is set after all syscall entry processing is done. 304 * Therefore, this bit will be set when next ptrace stop occurs, 305 * which should be syscall exit stop. Other stops which are possible 306 * directly after syscall entry (death, ptrace event stop) 307 * are simpler and handled without calling trace_syscall(), therefore 308 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop 309 * are limited to trace(), this condition is never observed in trace_syscall() 310 * and below. 311 * The bit is cleared after all syscall exit processing is done. 312 * 313 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable. 314 */ 315#define TCB_INSYSCALL 0x04 316#define TCB_ATTACHED 0x08 /* We attached to it already */ 317#define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */ 318#define TCB_FILTERED 0x20 /* This system call has been filtered out */ 319 320/* qualifier flags */ 321#define QUAL_TRACE 0x001 /* this system call should be traced */ 322#define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */ 323#define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */ 324#define QUAL_RAW 0x008 /* print all args in hex for this syscall */ 325#define QUAL_SIGNAL 0x010 /* report events with this signal */ 326#define QUAL_READ 0x020 /* dump data read on this file descriptor */ 327#define QUAL_WRITE 0x040 /* dump data written to this file descriptor */ 328typedef uint8_t qualbits_t; 329#define UNDEFINED_SCNO 0x100 /* Used only in tcp->qual_flg */ 330 331#define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE) 332 333#define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL)) 334#define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL) 335#define syserror(tcp) ((tcp)->u_error != 0) 336#define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE) 337#define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV) 338#define filtered(tcp) ((tcp)->flags & TCB_FILTERED) 339 340struct xlat { 341 unsigned int val; 342 const char *str; 343}; 344#define XLAT(x) { x, #x } 345#define XLAT_END { 0, NULL } 346 347extern const struct xlat addrfams[]; 348extern const struct xlat at_flags[]; 349extern const struct xlat open_access_modes[]; 350extern const struct xlat open_mode_flags[]; 351extern const struct xlat resource_flags[]; 352extern const struct xlat whence_codes[]; 353 354/* Format of syscall return values */ 355#define RVAL_DECIMAL 000 /* decimal format */ 356#define RVAL_HEX 001 /* hex format */ 357#define RVAL_OCTAL 002 /* octal format */ 358#define RVAL_UDECIMAL 003 /* unsigned decimal format */ 359#if defined(LINUX_MIPSN32) || defined(X32) 360# if 0 /* unused so far */ 361# define RVAL_LDECIMAL 004 /* long decimal format */ 362# define RVAL_LHEX 005 /* long hex format */ 363# define RVAL_LOCTAL 006 /* long octal format */ 364# endif 365# define RVAL_LUDECIMAL 007 /* long unsigned decimal format */ 366#endif 367#define RVAL_FD 010 /* file descriptor */ 368#define RVAL_MASK 017 /* mask for these values */ 369 370#define RVAL_STR 020 /* Print `auxstr' field after return val */ 371#define RVAL_NONE 040 /* Print nothing */ 372 373#define RVAL_DECODED 0100 /* syscall decoding finished */ 374 375#define TRACE_FILE 001 /* Trace file-related syscalls. */ 376#define TRACE_IPC 002 /* Trace IPC-related syscalls. */ 377#define TRACE_NETWORK 004 /* Trace network-related syscalls. */ 378#define TRACE_PROCESS 010 /* Trace process-related syscalls. */ 379#define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */ 380#define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */ 381#define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */ 382#define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */ 383#define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */ 384#define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */ 385#define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */ 386 387#define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL) 388 389#if defined(ARM) || defined(AARCH64) \ 390 || defined(I386) || defined(X32) || defined(X86_64) \ 391 || defined(IA64) \ 392 || defined(BFIN) \ 393 || defined(M68K) \ 394 || defined(MICROBLAZE) \ 395 || defined(S390) \ 396 || defined(SH) || defined(SH64) \ 397 || defined(SPARC) || defined(SPARC64) \ 398 /**/ 399# define NEED_UID16_PARSERS 1 400#else 401# define NEED_UID16_PARSERS 0 402#endif 403 404typedef enum { 405 CFLAG_NONE = 0, 406 CFLAG_ONLY_STATS, 407 CFLAG_BOTH 408} cflag_t; 409extern cflag_t cflag; 410extern bool debug_flag; 411extern bool Tflag; 412extern bool iflag; 413extern bool count_wallclock; 414extern unsigned int qflag; 415extern bool not_failing_only; 416extern unsigned int show_fd_path; 417extern bool hide_log_until_execve; 418/* are we filtering traces based on paths? */ 419extern const char **paths_selected; 420#define tracing_paths (paths_selected != NULL) 421extern unsigned xflag; 422extern unsigned followfork; 423#ifdef USE_LIBUNWIND 424/* if this is true do the stack trace for every system call */ 425extern bool stack_trace_enabled; 426#endif 427extern unsigned ptrace_setoptions; 428extern unsigned max_strlen; 429extern unsigned os_release; 430#undef KERNEL_VERSION 431#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) 432 433enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 }; 434 435void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 436void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 437void error_msg_and_die(const char *fmt, ...) 438 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 439void perror_msg_and_die(const char *fmt, ...) 440 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 441void die_out_of_memory(void) ATTRIBUTE_NORETURN; 442 443void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1)); 444void *xcalloc(size_t nmemb, size_t size) 445 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2)); 446void *xreallocarray(void *ptr, size_t nmemb, size_t size) 447 ATTRIBUTE_ALLOC_SIZE((2, 3)); 448char *xstrdup(const char *str) ATTRIBUTE_MALLOC; 449 450#if USE_CUSTOM_PRINTF 451/* 452 * See comment in vsprintf.c for allowed formats. 453 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u. 454 */ 455int strace_vfprintf(FILE *fp, const char *fmt, va_list args); 456#else 457# define strace_vfprintf vfprintf 458#endif 459 460extern void set_sortby(const char *); 461extern void set_overhead(int); 462extern void qualify(const char *); 463extern void print_pc(struct tcb *); 464extern int trace_syscall(struct tcb *); 465extern void count_syscall(struct tcb *, const struct timeval *); 466extern void call_summary(FILE *); 467 468extern void clear_regs(void); 469extern void get_regs(pid_t pid); 470extern int get_scno(struct tcb *tcp); 471extern const char *syscall_name(long scno); 472 473extern int umoven(struct tcb *, long, unsigned int, void *); 474#define umove(pid, addr, objp) \ 475 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp)) 476extern int umoven_or_printaddr(struct tcb *, long, unsigned int, void *); 477#define umove_or_printaddr(pid, addr, objp) \ 478 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp)) 479extern int umovestr(struct tcb *, long, unsigned int, char *); 480extern int upeek(int pid, long, long *); 481 482#if defined ALPHA || defined IA64 || defined MIPS \ 483 || defined SH || defined SPARC || defined SPARC64 484# define HAVE_GETRVAL2 485extern long getrval2(struct tcb *); 486#else 487# undef HAVE_GETRVAL2 488#endif 489 490extern const char *signame(const int); 491extern void pathtrace_select(const char *); 492extern int pathtrace_match(struct tcb *); 493extern int getfdpath(struct tcb *, int, char *, unsigned); 494 495extern const char *xlookup(const struct xlat *, const unsigned int); 496extern const char *xlat_search(const struct xlat *, const size_t, const unsigned int); 497 498extern unsigned long get_pagesize(void); 499extern int string_to_uint(const char *str); 500extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits); 501 502#define QUOTE_0_TERMINATED 0x01 503#define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02 504 505extern int print_quoted_string(const char *, unsigned int, unsigned int); 506 507/* a refers to the lower numbered u_arg, 508 * b refers to the higher numbered u_arg 509 */ 510#ifdef HAVE_LITTLE_ENDIAN_LONG_LONG 511# define LONG_LONG(a,b) \ 512 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32))) 513#else 514# define LONG_LONG(a,b) \ 515 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32))) 516#endif 517extern int getllval(struct tcb *, unsigned long long *, int); 518extern int printllval(struct tcb *, const char *, int) 519 ATTRIBUTE_FORMAT((printf, 2, 0)); 520 521extern void printaddr(long); 522extern void printxvals(const unsigned int, const char *, const struct xlat *, ...); 523#define printxval(xlat, val, dflt) printxvals(val, dflt, xlat, NULL) 524extern int printargs(struct tcb *); 525extern int printargs_lu(struct tcb *); 526extern int printargs_ld(struct tcb *); 527extern void addflags(const struct xlat *, int); 528extern int printflags(const struct xlat *, int, const char *); 529extern const char *sprintflags(const char *, const struct xlat *, int); 530extern const char *sprintmode(int); 531extern const char *sprinttime(time_t); 532extern void dumpiov_in_msghdr(struct tcb *, long); 533extern void dumpiov_in_mmsghdr(struct tcb *, long); 534extern void dumpiov(struct tcb *, int, long); 535extern void dumpstr(struct tcb *, long, int); 536extern void printstr(struct tcb *, long, long); 537extern bool printnum_short(struct tcb *, long, const char *) 538 ATTRIBUTE_FORMAT((printf, 3, 0)); 539extern bool printnum_int(struct tcb *, long, const char *) 540 ATTRIBUTE_FORMAT((printf, 3, 0)); 541extern bool printnum_int64(struct tcb *, long, const char *) 542 ATTRIBUTE_FORMAT((printf, 3, 0)); 543 544#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4 545extern bool printnum_long_int(struct tcb *, long, const char *, const char *) 546 ATTRIBUTE_FORMAT((printf, 3, 0)) 547 ATTRIBUTE_FORMAT((printf, 4, 0)); 548# define printnum_slong(tcp, addr) \ 549 printnum_long_int((tcp), (addr), "%" PRId64, "%d") 550# define printnum_ulong(tcp, addr) \ 551 printnum_long_int((tcp), (addr), "%" PRIu64, "%u") 552# define printnum_ptr(tcp, addr) \ 553 printnum_long_int((tcp), (addr), "%#" PRIx64, "%#x") 554#elif SIZEOF_LONG > 4 555# define printnum_slong(tcp, addr) \ 556 printnum_int64((tcp), (addr), "%" PRId64) 557# define printnum_ulong(tcp, addr) \ 558 printnum_int64((tcp), (addr), "%" PRIu64) 559# define printnum_ptr(tcp, addr) \ 560 printnum_int64((tcp), (addr), "%#" PRIx64) 561#else 562# define printnum_slong(tcp, addr) \ 563 printnum_int((tcp), (addr), "%d") 564# define printnum_ulong(tcp, addr) \ 565 printnum_int((tcp), (addr), "%u") 566# define printnum_ptr(tcp, addr) \ 567 printnum_int((tcp), (addr), "%#x") 568#endif 569 570extern bool printpair_int(struct tcb *, long, const char *) 571 ATTRIBUTE_FORMAT((printf, 3, 0)); 572extern bool printpair_int64(struct tcb *, long, const char *) 573 ATTRIBUTE_FORMAT((printf, 3, 0)); 574extern void printpath(struct tcb *, long); 575extern void printpathn(struct tcb *, long, unsigned int); 576#define TIMESPEC_TEXT_BUFSIZE (sizeof(long)*3 * 2 + sizeof("{%u, %u}")) 577#define TIMEVAL_TEXT_BUFSIZE TIMESPEC_TEXT_BUFSIZE 578extern void printtv_bitness(struct tcb *, long, enum bitness_t, int); 579#define printtv(tcp, addr) \ 580 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0) 581#define printtv_special(tcp, addr) \ 582 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1) 583extern char *sprinttv(char *, struct tcb *, long, enum bitness_t, int special); 584extern void print_timespec(struct tcb *, long); 585extern void sprint_timespec(char *, struct tcb *, long); 586extern void printsigevent(struct tcb *tcp, long arg); 587extern void printsiginfo_at(struct tcb *tcp, long addr); 588extern void printfd(struct tcb *, int); 589extern bool print_sockaddr_by_inode(const unsigned long, const char *); 590extern void print_dirfd(struct tcb *, int); 591extern void printsock(struct tcb *, long, int); 592extern void print_sock_optmgmt(struct tcb *, long, int); 593extern void printrusage(struct tcb *, long); 594#ifdef ALPHA 595extern void printrusage32(struct tcb *, long); 596#endif 597extern void printuid(const char *, const unsigned int); 598extern void print_sigset_addr_len(struct tcb *, long, long); 599extern const char *sprintsigmask_n(const char *, const void *, unsigned int); 600#define tprintsigmask_addr(prefix, mask) \ 601 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask))) 602extern void printsignal(int); 603extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov); 604extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long); 605extern void tprint_open_modes(int); 606extern const char *sprint_open_modes(int); 607extern void print_seccomp_filter(struct tcb *tcp, unsigned long); 608 609extern int block_ioctl(struct tcb *, const unsigned int, long); 610extern int evdev_ioctl(struct tcb *, const unsigned int, long); 611extern int loop_ioctl(struct tcb *, const unsigned int, long); 612extern int mtd_ioctl(struct tcb *, const unsigned int, long); 613extern int ptp_ioctl(struct tcb *, const unsigned int, long); 614extern int rtc_ioctl(struct tcb *, const unsigned int, long); 615extern int scsi_ioctl(struct tcb *, const unsigned int, long); 616extern int sock_ioctl(struct tcb *, const unsigned int, long); 617extern int term_ioctl(struct tcb *, const unsigned int, long); 618extern int ubi_ioctl(struct tcb *, const unsigned int, long); 619extern int v4l2_ioctl(struct tcb *, const unsigned int, long); 620 621extern int tv_nz(const struct timeval *); 622extern int tv_cmp(const struct timeval *, const struct timeval *); 623extern double tv_float(const struct timeval *); 624extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *); 625extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *); 626extern void tv_mul(struct timeval *, const struct timeval *, int); 627extern void tv_div(struct timeval *, const struct timeval *, int); 628 629#ifdef USE_LIBUNWIND 630extern void unwind_init(void); 631extern void unwind_tcb_init(struct tcb *tcp); 632extern void unwind_tcb_fin(struct tcb *tcp); 633extern void unwind_cache_invalidate(struct tcb* tcp); 634extern void unwind_print_stacktrace(struct tcb* tcp); 635extern void unwind_capture_stacktrace(struct tcb* tcp); 636#endif 637 638/* Strace log generation machinery. 639 * 640 * printing_tcp: tcb which has incomplete line being printed right now. 641 * NULL if last line has been completed ('\n'-terminated). 642 * printleader(tcp) examines it, finishes incomplete line if needed, 643 * the sets it to tcp. 644 * line_ended() clears printing_tcp and resets ->curcol = 0. 645 * tcp->curcol == 0 check is also used to detect completeness 646 * of last line, since in -ff mode just checking printing_tcp for NULL 647 * is not enough. 648 * 649 * If you change this code, test log generation in both -f and -ff modes 650 * using: 651 * strace -oLOG -f[f] test/threaded_execve 652 * strace -oLOG -f[f] test/sigkill_rain 653 * strace -oLOG -f[f] -p "`pidof web_browser`" 654 */ 655extern struct tcb *printing_tcp; 656extern void printleader(struct tcb *); 657extern void line_ended(void); 658extern void tabto(void); 659extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 660extern void tprints(const char *str); 661 662#if SUPPORTED_PERSONALITIES > 1 663extern void set_personality(int personality); 664extern unsigned current_personality; 665#else 666# define set_personality(personality) ((void)0) 667# define current_personality 0 668#endif 669 670#if SUPPORTED_PERSONALITIES == 1 671# define current_wordsize PERSONALITY0_WORDSIZE 672#else 673# if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE 674# define current_wordsize PERSONALITY0_WORDSIZE 675# else 676extern unsigned current_wordsize; 677# endif 678#endif 679 680/* In many, many places we play fast and loose and use 681 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc. 682 * We probably need to use widen_to_long() instead: 683 */ 684#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4 685# define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v)) 686#else 687# define widen_to_long(v) ((long)(v)) 688#endif 689 690extern const struct_sysent sysent0[]; 691extern const char *const errnoent0[]; 692extern const char *const signalent0[]; 693extern const struct_ioctlent ioctlent0[]; 694extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES]; 695#define qual_flags (qual_vec[current_personality]) 696#if SUPPORTED_PERSONALITIES > 1 697extern const struct_sysent *sysent; 698extern const char *const *errnoent; 699extern const char *const *signalent; 700extern const struct_ioctlent *ioctlent; 701#else 702# define sysent sysent0 703# define errnoent errnoent0 704# define signalent signalent0 705# define ioctlent ioctlent0 706#endif 707extern unsigned nsyscalls; 708extern unsigned nerrnos; 709extern unsigned nsignals; 710extern unsigned nioctlents; 711extern unsigned num_quals; 712 713/* 714 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name 715 */ 716#define SCNO_IS_VALID(scno) \ 717 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func) 718 719/* Only ensures that sysent[scno] isn't out of range */ 720#define SCNO_IN_RANGE(scno) \ 721 ((unsigned long)(scno) < nsyscalls) 722 723#ifndef SYS_FUNC_NAME 724# define SYS_FUNC_NAME(syscall_name) sys_ ## syscall_name 725#endif 726 727#define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(syscall_name)(struct tcb *tcp) 728