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 <signal.h> 54 #include <time.h> 55 #include <sys/time.h> 56 #include <sys/syscall.h> 57 58 #ifndef HAVE_STRERROR 59 const char *strerror(int); 60 #endif 61 #ifndef HAVE_STPCPY 62 /* Some libc have stpcpy, some don't. Sigh... 63 * Roll our private implementation... 64 */ 65 #undef stpcpy 66 #define stpcpy strace_stpcpy 67 extern char *stpcpy(char *dst, const char *src); 68 #endif 69 70 #if defined __GNUC__ && defined __GNUC_MINOR__ 71 # define GNUC_PREREQ(maj, min) \ 72 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) 73 #else 74 # define __attribute__(x) /* empty */ 75 # define GNUC_PREREQ(maj, min) 0 76 #endif 77 78 #if GNUC_PREREQ(2, 5) 79 # define ATTRIBUTE_NORETURN __attribute__((__noreturn__)) 80 #else 81 # define ATTRIBUTE_NORETURN /* empty */ 82 #endif 83 84 #if GNUC_PREREQ(2, 7) 85 # define ATTRIBUTE_FORMAT(args) __attribute__((__format__ args)) 86 # define ATTRIBUTE_ALIGNED(arg) __attribute__((__aligned__(arg))) 87 # define ATTRIBUTE_PACKED __attribute__((__packed__)) 88 #else 89 # define ATTRIBUTE_FORMAT(args) /* empty */ 90 # define ATTRIBUTE_ALIGNED(arg) /* empty */ 91 # define ATTRIBUTE_PACKED /* empty */ 92 #endif 93 94 #if GNUC_PREREQ(3, 0) 95 # define ATTRIBUTE_MALLOC __attribute__((__malloc__)) 96 #else 97 # define ATTRIBUTE_MALLOC /* empty */ 98 #endif 99 100 #if GNUC_PREREQ(3, 1) 101 # define ATTRIBUTE_NOINLINE __attribute__((__noinline__)) 102 #else 103 # define ATTRIBUTE_NOINLINE /* empty */ 104 #endif 105 106 #if GNUC_PREREQ(4, 3) 107 # define ATTRIBUTE_ALLOC_SIZE(args) __attribute__((__alloc_size__ args)) 108 #else 109 # define ATTRIBUTE_ALLOC_SIZE(args) /* empty */ 110 #endif 111 112 #ifndef offsetof 113 # define offsetof(type, member) \ 114 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL)) 115 #endif 116 117 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 118 119 /* macros */ 120 #ifndef MAX 121 # define MAX(a, b) (((a) > (b)) ? (a) : (b)) 122 #endif 123 #ifndef MIN 124 # define MIN(a, b) (((a) < (b)) ? (a) : (b)) 125 #endif 126 #define CLAMP(val, min, max) MIN(MAX(min, val), max) 127 128 /* Glibc has an efficient macro for sigemptyset 129 * (it just does one or two assignments of 0 to internal vector of longs). 130 */ 131 #if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset) 132 # define sigemptyset __sigemptyset 133 #endif 134 135 /* Configuration section */ 136 #ifndef DEFAULT_STRLEN 137 /* default maximum # of bytes printed in `printstr', change with -s switch */ 138 # define DEFAULT_STRLEN 32 139 #endif 140 #ifndef DEFAULT_ACOLUMN 141 # define DEFAULT_ACOLUMN 40 /* default alignment column for results */ 142 #endif 143 /* 144 * Maximum number of args to a syscall. 145 * 146 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS! 147 * linux/<ARCH>/syscallent*.h: 148 * all have nargs <= 6 except mips o32 which has nargs <= 7. 149 */ 150 #ifndef MAX_ARGS 151 # ifdef LINUX_MIPSO32 152 # define MAX_ARGS 7 153 # else 154 # define MAX_ARGS 6 155 # endif 156 #endif 157 /* default sorting method for call profiling */ 158 #ifndef DEFAULT_SORTBY 159 # define DEFAULT_SORTBY "time" 160 #endif 161 /* 162 * Experimental code using PTRACE_SEIZE can be enabled here. 163 * This needs Linux kernel 3.4.x or later to work. 164 */ 165 #define USE_SEIZE 1 166 /* To force NOMMU build, set to 1 */ 167 #define NOMMU_SYSTEM 0 168 /* 169 * Set to 1 to use speed-optimized vfprintf implementation. 170 * It results in strace using about 5% less CPU in user space 171 * (compared to glibc version). 172 * But strace spends a lot of time in kernel space, 173 * so overall it does not appear to be a significant win. 174 * Thus disabled by default. 175 */ 176 #define USE_CUSTOM_PRINTF 0 177 178 #ifndef ERESTARTSYS 179 # define ERESTARTSYS 512 180 #endif 181 #ifndef ERESTARTNOINTR 182 # define ERESTARTNOINTR 513 183 #endif 184 #ifndef ERESTARTNOHAND 185 # define ERESTARTNOHAND 514 186 #endif 187 #ifndef ERESTART_RESTARTBLOCK 188 # define ERESTART_RESTARTBLOCK 516 189 #endif 190 191 #if defined(SPARC) || defined(SPARC64) 192 # define PERSONALITY0_WORDSIZE 4 193 # if defined(SPARC64) 194 # define SUPPORTED_PERSONALITIES 2 195 # define PERSONALITY1_WORDSIZE 8 196 # endif 197 #endif 198 199 #ifdef X86_64 200 # define SUPPORTED_PERSONALITIES 3 201 # define PERSONALITY0_WORDSIZE 8 202 # define PERSONALITY1_WORDSIZE 4 203 # define PERSONALITY2_WORDSIZE 4 204 #endif 205 206 #ifdef X32 207 # define SUPPORTED_PERSONALITIES 2 208 # define PERSONALITY0_WORDSIZE 4 209 # define PERSONALITY1_WORDSIZE 4 210 #endif 211 212 #ifdef ARM 213 /* one personality */ 214 #endif 215 216 #ifdef AARCH64 217 /* The existing ARM personality, then AArch64 */ 218 # define SUPPORTED_PERSONALITIES 2 219 # define PERSONALITY0_WORDSIZE 4 220 # define PERSONALITY1_WORDSIZE 8 221 # define DEFAULT_PERSONALITY 1 222 #endif 223 224 #ifdef POWERPC64 225 # define SUPPORTED_PERSONALITIES 2 226 # define PERSONALITY0_WORDSIZE 8 227 # define PERSONALITY1_WORDSIZE 4 228 #endif 229 230 #ifdef TILE 231 # define SUPPORTED_PERSONALITIES 2 232 # define PERSONALITY0_WORDSIZE 8 233 # define PERSONALITY1_WORDSIZE 4 234 # ifdef __tilepro__ 235 # define DEFAULT_PERSONALITY 1 236 # endif 237 #endif 238 239 #ifndef SUPPORTED_PERSONALITIES 240 # define SUPPORTED_PERSONALITIES 1 241 #endif 242 #ifndef DEFAULT_PERSONALITY 243 # define DEFAULT_PERSONALITY 0 244 #endif 245 #ifndef PERSONALITY0_WORDSIZE 246 # define PERSONALITY0_WORDSIZE SIZEOF_LONG 247 #endif 248 249 typedef struct sysent { 250 unsigned nargs; 251 int sys_flags; 252 int (*sys_func)(); 253 const char *sys_name; 254 } struct_sysent; 255 256 typedef struct ioctlent { 257 const char *symbol; 258 unsigned int code; 259 } struct_ioctlent; 260 261 /* Trace Control Block */ 262 struct 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 curcol; /* Output column for this process */ 278 FILE *outf; /* Output file for this process */ 279 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */ 280 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */ 281 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */ 282 struct timeval stime; /* System time usage as of last process wait */ 283 struct timeval dtime; /* Delta for system time usage */ 284 struct timeval etime; /* Syscall entry time */ 285 286 #ifdef USE_LIBUNWIND 287 struct UPT_info* libunwind_ui; 288 struct mmap_cache_t* mmap_cache; 289 unsigned int mmap_cache_size; 290 unsigned int mmap_cache_generation; 291 struct queue_t* queue; 292 #endif 293 }; 294 295 /* TCB flags */ 296 /* We have attached to this process, but did not see it stopping yet */ 297 #define TCB_STARTUP 0x01 298 #define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */ 299 /* 300 * Are we in system call entry or in syscall exit? 301 * 302 * This bit is set after all syscall entry processing is done. 303 * Therefore, this bit will be set when next ptrace stop occurs, 304 * which should be syscall exit stop. Other stops which are possible 305 * directly after syscall entry (death, ptrace event stop) 306 * are simpler and handled without calling trace_syscall(), therefore 307 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop 308 * are limited to trace(), this condition is never observed in trace_syscall() 309 * and below. 310 * The bit is cleared after all syscall exit processing is done. 311 * 312 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable. 313 */ 314 #define TCB_INSYSCALL 0x04 315 #define TCB_ATTACHED 0x08 /* We attached to it already */ 316 #define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */ 317 #define TCB_FILTERED 0x20 /* This system call has been filtered out */ 318 319 /* qualifier flags */ 320 #define QUAL_TRACE 0x001 /* this system call should be traced */ 321 #define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */ 322 #define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */ 323 #define QUAL_RAW 0x008 /* print all args in hex for this syscall */ 324 #define QUAL_SIGNAL 0x010 /* report events with this signal */ 325 #define QUAL_READ 0x020 /* dump data read on this file descriptor */ 326 #define QUAL_WRITE 0x040 /* dump data written to this file descriptor */ 327 typedef uint8_t qualbits_t; 328 #define UNDEFINED_SCNO 0x100 /* Used only in tcp->qual_flg */ 329 330 #define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE) 331 332 #define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL)) 333 #define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL) 334 #define syserror(tcp) ((tcp)->u_error != 0) 335 #define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE) 336 #define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV) 337 #define filtered(tcp) ((tcp)->flags & TCB_FILTERED) 338 339 struct xlat { 340 unsigned int val; 341 const char *str; 342 }; 343 #define XLAT(x) { x, #x } 344 #define XLAT_END { 0, NULL } 345 346 extern const struct xlat addrfams[]; 347 extern const struct xlat at_flags[]; 348 extern const struct xlat open_access_modes[]; 349 extern const struct xlat open_mode_flags[]; 350 extern const struct xlat whence_codes[]; 351 352 /* Format of syscall return values */ 353 #define RVAL_DECIMAL 000 /* decimal format */ 354 #define RVAL_HEX 001 /* hex format */ 355 #define RVAL_OCTAL 002 /* octal format */ 356 #define RVAL_UDECIMAL 003 /* unsigned decimal format */ 357 #if defined(LINUX_MIPSN32) || defined(X32) 358 # if 0 /* unused so far */ 359 # define RVAL_LDECIMAL 004 /* long decimal format */ 360 # define RVAL_LHEX 005 /* long hex format */ 361 # define RVAL_LOCTAL 006 /* long octal format */ 362 # endif 363 # define RVAL_LUDECIMAL 007 /* long unsigned decimal format */ 364 #endif 365 #define RVAL_FD 010 /* file descriptor */ 366 #define RVAL_MASK 017 /* mask for these values */ 367 368 #define RVAL_STR 020 /* Print `auxstr' field after return val */ 369 #define RVAL_NONE 040 /* Print nothing */ 370 371 #define TRACE_FILE 001 /* Trace file-related syscalls. */ 372 #define TRACE_IPC 002 /* Trace IPC-related syscalls. */ 373 #define TRACE_NETWORK 004 /* Trace network-related syscalls. */ 374 #define TRACE_PROCESS 010 /* Trace process-related syscalls. */ 375 #define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */ 376 #define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */ 377 #define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */ 378 #define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */ 379 #define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */ 380 #define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */ 381 #define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */ 382 383 #if defined(ARM) || defined(AARCH64) \ 384 || defined(I386) || defined(X32) || defined(X86_64) \ 385 || defined(IA64) \ 386 || defined(BFIN) \ 387 || defined(M68K) \ 388 || defined(MICROBLAZE) \ 389 || defined(S390) \ 390 || defined(SH) || defined(SH64) \ 391 || defined(SPARC) || defined(SPARC64) \ 392 /**/ 393 # define NEED_UID16_PARSERS 1 394 #else 395 # define NEED_UID16_PARSERS 0 396 #endif 397 398 typedef enum { 399 CFLAG_NONE = 0, 400 CFLAG_ONLY_STATS, 401 CFLAG_BOTH 402 } cflag_t; 403 extern cflag_t cflag; 404 extern bool debug_flag; 405 extern bool Tflag; 406 extern bool iflag; 407 extern bool count_wallclock; 408 extern unsigned int qflag; 409 extern bool not_failing_only; 410 extern unsigned int show_fd_path; 411 extern bool hide_log_until_execve; 412 /* are we filtering traces based on paths? */ 413 extern const char **paths_selected; 414 #define tracing_paths (paths_selected != NULL) 415 extern unsigned xflag; 416 extern unsigned followfork; 417 #ifdef USE_LIBUNWIND 418 /* if this is true do the stack trace for every system call */ 419 extern bool stack_trace_enabled; 420 #endif 421 extern unsigned ptrace_setoptions; 422 extern unsigned max_strlen; 423 extern unsigned os_release; 424 #undef KERNEL_VERSION 425 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) 426 427 enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 }; 428 429 void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 430 void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 431 void error_msg_and_die(const char *fmt, ...) 432 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 433 void perror_msg_and_die(const char *fmt, ...) 434 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN; 435 void die_out_of_memory(void) ATTRIBUTE_NORETURN; 436 437 #if USE_CUSTOM_PRINTF 438 /* 439 * See comment in vsprintf.c for allowed formats. 440 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u. 441 */ 442 int strace_vfprintf(FILE *fp, const char *fmt, va_list args); 443 #else 444 # define strace_vfprintf vfprintf 445 #endif 446 447 extern void set_sortby(const char *); 448 extern void set_overhead(int); 449 extern void qualify(const char *); 450 extern void print_pc(struct tcb *); 451 extern int trace_syscall(struct tcb *); 452 extern void count_syscall(struct tcb *, const struct timeval *); 453 extern void call_summary(FILE *); 454 455 extern void clear_regs(void); 456 extern void get_regs(pid_t pid); 457 extern int get_scno(struct tcb *tcp); 458 459 extern int umoven(struct tcb *, long, unsigned int, void *); 460 #define umove(pid, addr, objp) \ 461 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp)) 462 extern int umovestr(struct tcb *, long, unsigned int, char *); 463 extern int upeek(int pid, long, long *); 464 465 #if defined ALPHA || defined IA64 || defined MIPS \ 466 || defined SH || defined SPARC || defined SPARC64 467 # define HAVE_GETRVAL2 468 extern long getrval2(struct tcb *); 469 #else 470 # undef HAVE_GETRVAL2 471 #endif 472 473 extern const char *signame(const int); 474 extern void pathtrace_select(const char *); 475 extern int pathtrace_match(struct tcb *); 476 extern int getfdpath(struct tcb *, int, char *, unsigned); 477 478 extern const char *xlookup(const struct xlat *, const unsigned int); 479 extern const char *xlat_search(const struct xlat *, const size_t, const unsigned int); 480 481 extern unsigned long get_pagesize(void); 482 extern int string_to_uint(const char *str); 483 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits); 484 485 #define QUOTE_0_TERMINATED 0x01 486 #define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02 487 488 extern int print_quoted_string(const char *, unsigned int, unsigned int); 489 490 /* a refers to the lower numbered u_arg, 491 * b refers to the higher numbered u_arg 492 */ 493 #if HAVE_LITTLE_ENDIAN_LONG_LONG 494 # define LONG_LONG(a,b) \ 495 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32))) 496 #else 497 # define LONG_LONG(a,b) \ 498 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32))) 499 #endif 500 extern int getllval(struct tcb *, unsigned long long *, int); 501 extern int printllval(struct tcb *, const char *, int) 502 ATTRIBUTE_FORMAT((printf, 2, 0)); 503 504 extern void printxval(const struct xlat *, const unsigned int, const char *); 505 extern int printargs(struct tcb *); 506 extern int printargs_lu(struct tcb *); 507 extern int printargs_ld(struct tcb *); 508 extern void addflags(const struct xlat *, int); 509 extern int printflags(const struct xlat *, int, const char *); 510 extern const char *sprintflags(const char *, const struct xlat *, int); 511 extern const char *sprintmode(int); 512 extern const char *sprinttime(time_t); 513 extern void dumpiov_in_msghdr(struct tcb *, long); 514 extern void dumpiov_in_mmsghdr(struct tcb *, long); 515 extern void dumpiov(struct tcb *, int, long); 516 extern void dumpstr(struct tcb *, long, int); 517 extern void printstr(struct tcb *, long, long); 518 extern void printnum_int(struct tcb *, long, const char *) 519 ATTRIBUTE_FORMAT((printf, 3, 0)); 520 extern void printnum_long(struct tcb *, long, const char *) 521 ATTRIBUTE_FORMAT((printf, 3, 0)); 522 extern void printpath(struct tcb *, long); 523 extern void printpathn(struct tcb *, long, unsigned int); 524 #define TIMESPEC_TEXT_BUFSIZE (sizeof(long)*3 * 2 + sizeof("{%u, %u}")) 525 #define TIMEVAL_TEXT_BUFSIZE TIMESPEC_TEXT_BUFSIZE 526 extern void printtv_bitness(struct tcb *, long, enum bitness_t, int); 527 #define printtv(tcp, addr) \ 528 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0) 529 #define printtv_special(tcp, addr) \ 530 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1) 531 extern char *sprinttv(char *, struct tcb *, long, enum bitness_t, int special); 532 extern void print_timespec(struct tcb *, long); 533 extern void sprint_timespec(char *, struct tcb *, long); 534 extern void printsiginfo(const siginfo_t *, bool); 535 extern void printsiginfo_at(struct tcb *tcp, long addr); 536 extern void printfd(struct tcb *, int); 537 extern bool print_sockaddr_by_inode(const unsigned long, const char *); 538 extern void print_dirfd(struct tcb *, int); 539 extern void printsock(struct tcb *, long, int); 540 extern void print_sock_optmgmt(struct tcb *, long, int); 541 extern void printrusage(struct tcb *, long); 542 #ifdef ALPHA 543 extern void printrusage32(struct tcb *, long); 544 #endif 545 extern void printuid(const char *, const unsigned int); 546 extern void print_sigset_addr_len(struct tcb *, long, long); 547 extern const char *sprintsigmask_n(const char *, const void *, unsigned int); 548 #define tprintsigmask_addr(prefix, mask) \ 549 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask))) 550 extern void printsignal(int); 551 extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov); 552 extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long); 553 extern void tprint_open_modes(int); 554 extern const char *sprint_open_modes(int); 555 extern void print_loff_t(struct tcb *, long); 556 extern void print_seccomp_filter(struct tcb *tcp, unsigned long); 557 558 extern const struct_ioctlent *ioctl_lookup(const unsigned int); 559 extern const struct_ioctlent *ioctl_next_match(const struct_ioctlent *); 560 extern void ioctl_print_code(const unsigned int); 561 extern int ioctl_decode(struct tcb *, const unsigned int, long); 562 extern int ioctl_decode_command_number(const unsigned int); 563 extern int block_ioctl(struct tcb *, const unsigned int, long); 564 extern int evdev_ioctl(struct tcb *, const unsigned int, long); 565 extern int loop_ioctl(struct tcb *, const unsigned int, long); 566 extern int mtd_ioctl(struct tcb *, const unsigned int, long); 567 extern int ptp_ioctl(struct tcb *, const unsigned int, long); 568 extern int rtc_ioctl(struct tcb *, const unsigned int, long); 569 extern int scsi_ioctl(struct tcb *, const unsigned int, long); 570 extern int sock_ioctl(struct tcb *, const unsigned int, long); 571 extern int term_ioctl(struct tcb *, const unsigned int, long); 572 extern int ubi_ioctl(struct tcb *, const unsigned int, long); 573 extern int v4l2_ioctl(struct tcb *, const unsigned int, long); 574 575 extern int tv_nz(const struct timeval *); 576 extern int tv_cmp(const struct timeval *, const struct timeval *); 577 extern double tv_float(const struct timeval *); 578 extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *); 579 extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *); 580 extern void tv_mul(struct timeval *, const struct timeval *, int); 581 extern void tv_div(struct timeval *, const struct timeval *, int); 582 583 #ifdef USE_LIBUNWIND 584 extern void unwind_init(void); 585 extern void unwind_tcb_init(struct tcb *tcp); 586 extern void unwind_tcb_fin(struct tcb *tcp); 587 extern void unwind_cache_invalidate(struct tcb* tcp); 588 extern void unwind_print_stacktrace(struct tcb* tcp); 589 extern void unwind_capture_stacktrace(struct tcb* tcp); 590 #endif 591 592 /* Strace log generation machinery. 593 * 594 * printing_tcp: tcb which has incomplete line being printed right now. 595 * NULL if last line has been completed ('\n'-terminated). 596 * printleader(tcp) examines it, finishes incomplete line if needed, 597 * the sets it to tcp. 598 * line_ended() clears printing_tcp and resets ->curcol = 0. 599 * tcp->curcol == 0 check is also used to detect completeness 600 * of last line, since in -ff mode just checking printing_tcp for NULL 601 * is not enough. 602 * 603 * If you change this code, test log generation in both -f and -ff modes 604 * using: 605 * strace -oLOG -f[f] test/threaded_execve 606 * strace -oLOG -f[f] test/sigkill_rain 607 * strace -oLOG -f[f] -p "`pidof web_browser`" 608 */ 609 extern struct tcb *printing_tcp; 610 extern void printleader(struct tcb *); 611 extern void line_ended(void); 612 extern void tabto(void); 613 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2)); 614 extern void tprints(const char *str); 615 616 #if SUPPORTED_PERSONALITIES > 1 617 extern void set_personality(int personality); 618 extern unsigned current_personality; 619 #else 620 # define set_personality(personality) ((void)0) 621 # define current_personality 0 622 #endif 623 624 #if SUPPORTED_PERSONALITIES == 1 625 # define current_wordsize PERSONALITY0_WORDSIZE 626 #else 627 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE 628 # define current_wordsize PERSONALITY0_WORDSIZE 629 # else 630 extern unsigned current_wordsize; 631 # endif 632 #endif 633 634 /* In many, many places we play fast and loose and use 635 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc. 636 * We probably need to use widen_to_long() instead: 637 */ 638 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4 639 # define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v)) 640 #else 641 # define widen_to_long(v) ((long)(v)) 642 #endif 643 644 extern const struct_sysent sysent0[]; 645 extern const char *const errnoent0[]; 646 extern const char *const signalent0[]; 647 extern const struct_ioctlent ioctlent0[]; 648 extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES]; 649 #define qual_flags (qual_vec[current_personality]) 650 #if SUPPORTED_PERSONALITIES > 1 651 extern const struct_sysent *sysent; 652 extern const char *const *errnoent; 653 extern const char *const *signalent; 654 extern const struct_ioctlent *ioctlent; 655 #else 656 # define sysent sysent0 657 # define errnoent errnoent0 658 # define signalent signalent0 659 # define ioctlent ioctlent0 660 #endif 661 extern unsigned nsyscalls; 662 extern unsigned nerrnos; 663 extern unsigned nsignals; 664 extern unsigned nioctlents; 665 extern unsigned num_quals; 666 667 /* 668 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name 669 */ 670 #define SCNO_IS_VALID(scno) \ 671 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func) 672 673 /* Only ensures that sysent[scno] isn't out of range */ 674 #define SCNO_IN_RANGE(scno) \ 675 ((unsigned long)(scno) < nsyscalls) 676 677 #ifndef SYS_FUNC_NAME 678 # define SYS_FUNC_NAME(syscall_name) sys_ ## syscall_name 679 #endif 680 681 #define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(syscall_name)(struct tcb *tcp) 682
