1 /* 2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk (at) cs.few.eur.nl> 3 * Copyright (c) 1993 Branko Lankester <branko (at) hacktic.nl> 4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs (at) 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 61 const 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 69 extern 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 270 271 typedef struct sysent { 272 unsigned nargs; 273 int sys_flags; 274 int sen; 275 int (*sys_func)(); 276 const char *sys_name; 277 } struct_sysent; 278 279 typedef struct ioctlent { 280 const char *symbol; 281 unsigned int code; 282 } struct_ioctlent; 283 284 /* Trace Control Block */ 285 struct 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 */ 351 typedef 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) 362 363 struct xlat { 364 unsigned int val; 365 const char *str; 366 }; 367 #define XLAT(x) { x, #x } 368 #define XLAT_END { 0, NULL } 369 370 extern const struct xlat addrfams[]; 371 extern const struct xlat at_flags[]; 372 extern const struct xlat dirent_types[]; 373 extern const struct xlat open_access_modes[]; 374 extern const struct xlat open_mode_flags[]; 375 extern const struct xlat resource_flags[]; 376 extern 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 431 432 typedef enum { 433 CFLAG_NONE = 0, 434 CFLAG_ONLY_STATS, 435 CFLAG_BOTH 436 } cflag_t; 437 extern cflag_t cflag; 438 extern bool debug_flag; 439 extern bool Tflag; 440 extern bool iflag; 441 extern bool count_wallclock; 442 extern unsigned int qflag; 443 extern bool not_failing_only; 444 extern unsigned int show_fd_path; 445 extern bool hide_log_until_execve; 446 /* are we filtering traces based on paths? */ 447 extern const char **paths_selected; 448 #define tracing_paths (paths_selected != NULL) 449 extern unsigned xflag; 450 extern unsigned followfork; 451 #ifdef USE_LIBUNWIND 452 /* if this is true do the stack trace for every system call */ 453 extern bool stack_trace_enabled; 454 #endif 455 extern unsigned ptrace_setoptions; 456 extern unsigned max_strlen; 457 extern unsigned os_release; 458 #undef KERNEL_VERSION 459 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) 460 461 void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 462 void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 463 void error_msg_and_die(const char *fmt, ...) 464 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 465 void error_msg_and_help(const char *fmt, ...) 466 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 467 void perror_msg_and_die(const char *fmt, ...) 468 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 469 void die_out_of_memory(void) ATTRIBUTE_NORETURN; 470 471 void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1)); 472 void *xcalloc(size_t nmemb, size_t size) 473 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2)); 474 void *xreallocarray(void *ptr, size_t nmemb, size_t size) 475 ATTRIBUTE_ALLOC_SIZE((2, 3)); 476 char *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 */ 483 int strace_vfprintf(FILE *fp, const char *fmt, va_list args); 484 #else 485 # define strace_vfprintf vfprintf 486 #endif 487 488 extern void set_sortby(const char *); 489 extern void set_overhead(int); 490 extern void qualify(const char *); 491 extern void print_pc(struct tcb *); 492 extern int trace_syscall(struct tcb *); 493 extern void count_syscall(struct tcb *, const struct timeval *); 494 extern void call_summary(FILE *); 495 496 extern void clear_regs(void); 497 extern void get_regs(pid_t pid); 498 extern int get_scno(struct tcb *tcp); 499 extern const char *syscall_name(long scno); 500 501 extern bool is_erestart(struct tcb *); 502 extern void temporarily_clear_syserror(struct tcb *); 503 extern void restore_cleared_syserror(struct tcb *); 504 505 extern int umoven(struct tcb *, long, unsigned int, void *); 506 #define umove(pid, addr, objp) \ 507 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp)) 508 extern 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)) 511 extern int umove_ulong_or_printaddr(struct tcb *, long, unsigned long *); 512 extern int umove_ulong_array_or_printaddr(struct tcb *, long, unsigned long *, size_t); 513 extern int umovestr(struct tcb *, long, unsigned int, char *); 514 extern 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 519 extern long getrval2(struct tcb *); 520 #else 521 # undef HAVE_GETRVAL2 522 #endif 523 524 extern const char *signame(const int); 525 extern void pathtrace_select(const char *); 526 extern int pathtrace_match(struct tcb *); 527 extern int getfdpath(struct tcb *, int, char *, unsigned); 528 529 extern const char *xlookup(const struct xlat *, const unsigned int); 530 extern const char *xlat_search(const struct xlat *, const size_t, const unsigned int); 531 532 extern unsigned long get_pagesize(void); 533 extern int string_to_uint(const char *str); 534 extern 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 538 539 extern 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 551 extern int getllval(struct tcb *, unsigned long long *, int); 552 extern int printllval(struct tcb *, const char *, int) 553 ATTRIBUTE_FORMAT((printf, 2, 0)); 554 555 extern void printaddr(long); 556 extern void printxvals(const unsigned int, const char *, const struct xlat *, ...); 557 #define printxval(xlat, val, dflt) printxvals(val, dflt, xlat, NULL) 558 extern int printargs(struct tcb *); 559 extern int printargs_lu(struct tcb *); 560 extern int printargs_ld(struct tcb *); 561 extern void addflags(const struct xlat *, int); 562 extern int printflags(const struct xlat *, int, const char *); 563 extern const char *sprintflags(const char *, const struct xlat *, int); 564 extern const char *sprintmode(int); 565 extern const char *sprinttime(time_t); 566 extern void dumpiov_in_msghdr(struct tcb *, long); 567 extern void dumpiov_in_mmsghdr(struct tcb *, long); 568 extern void dumpiov(struct tcb *, int, long); 569 extern void dumpstr(struct tcb *, long, int); 570 extern void printstr(struct tcb *, long, long); 571 extern bool printnum_short(struct tcb *, long, const char *) 572 ATTRIBUTE_FORMAT((printf, 3, 0)); 573 extern bool printnum_int(struct tcb *, long, const char *) 574 ATTRIBUTE_FORMAT((printf, 3, 0)); 575 extern bool printnum_int64(struct tcb *, long, const char *) 576 ATTRIBUTE_FORMAT((printf, 3, 0)); 577 578 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4 579 extern 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 603 604 extern bool printpair_int(struct tcb *, long, const char *) 605 ATTRIBUTE_FORMAT((printf, 3, 0)); 606 extern bool printpair_int64(struct tcb *, long, const char *) 607 ATTRIBUTE_FORMAT((printf, 3, 0)); 608 extern void printpath(struct tcb *, long); 609 extern 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}")) 612 extern void printfd(struct tcb *, int); 613 extern bool print_sockaddr_by_inode(const unsigned long, const char *); 614 extern void print_dirfd(struct tcb *, int); 615 extern void printsock(struct tcb *, long, int); 616 extern void print_sock_optmgmt(struct tcb *, long, int); 617 #ifdef ALPHA 618 extern void printrusage32(struct tcb *, long); 619 extern const char *sprint_timeval32(struct tcb *tcp, long); 620 extern void print_timeval32(struct tcb *tcp, long); 621 extern void print_timeval32_pair(struct tcb *tcp, long); 622 extern void print_itimerval32(struct tcb *tcp, long); 623 #endif 624 extern void printuid(const char *, const unsigned int); 625 extern void print_sigset_addr_len(struct tcb *, long, long); 626 extern const char *sprintsigmask_n(const char *, const void *, unsigned int); 627 #define tprintsigmask_addr(prefix, mask) \ 628 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask))) 629 extern void printsignal(int); 630 extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov); 631 extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long); 632 extern void tprint_open_modes(int); 633 extern const char *sprint_open_modes(int); 634 extern void print_seccomp_filter(struct tcb *tcp, unsigned long); 635 636 extern int block_ioctl(struct tcb *, const unsigned int, long); 637 extern int evdev_ioctl(struct tcb *, const unsigned int, long); 638 extern int loop_ioctl(struct tcb *, const unsigned int, long); 639 extern int mtd_ioctl(struct tcb *, const unsigned int, long); 640 extern int ptp_ioctl(struct tcb *, const unsigned int, long); 641 extern int rtc_ioctl(struct tcb *, const unsigned int, long); 642 extern int scsi_ioctl(struct tcb *, const unsigned int, long); 643 extern int sock_ioctl(struct tcb *, const unsigned int, long); 644 extern int term_ioctl(struct tcb *, const unsigned int, long); 645 extern int ubi_ioctl(struct tcb *, const unsigned int, long); 646 extern int v4l2_ioctl(struct tcb *, const unsigned int, long); 647 648 extern int tv_nz(const struct timeval *); 649 extern int tv_cmp(const struct timeval *, const struct timeval *); 650 extern double tv_float(const struct timeval *); 651 extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *); 652 extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *); 653 extern void tv_mul(struct timeval *, const struct timeval *, int); 654 extern void tv_div(struct timeval *, const struct timeval *, int); 655 656 #ifdef USE_LIBUNWIND 657 extern void unwind_init(void); 658 extern void unwind_tcb_init(struct tcb *tcp); 659 extern void unwind_tcb_fin(struct tcb *tcp); 660 extern void unwind_cache_invalidate(struct tcb* tcp); 661 extern void unwind_print_stacktrace(struct tcb* tcp); 662 extern 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 */ 682 extern struct tcb *printing_tcp; 683 extern void printleader(struct tcb *); 684 extern void line_ended(void); 685 extern void tabto(void); 686 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 687 extern void tprints(const char *str); 688 689 #if SUPPORTED_PERSONALITIES > 1 690 extern void set_personality(int personality); 691 extern 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 703 extern 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 716 717 extern const struct_sysent sysent0[]; 718 extern const char *const errnoent0[]; 719 extern const char *const signalent0[]; 720 extern const struct_ioctlent ioctlent0[]; 721 extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES]; 722 #define qual_flags (qual_vec[current_personality]) 723 724 #if SUPPORTED_PERSONALITIES > 1 725 extern const struct_sysent *sysent; 726 extern const char *const *errnoent; 727 extern const char *const *signalent; 728 extern const struct_ioctlent *ioctlent; 729 #else 730 # define sysent sysent0 731 # define errnoent errnoent0 732 # define signalent signalent0 733 # define ioctlent ioctlent0 734 #endif 735 736 extern unsigned nsyscalls; 737 extern unsigned nerrnos; 738 extern unsigned nsignals; 739 extern unsigned nioctlents; 740 extern 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
