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>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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.
40 #include <sys/types.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.
50 /* #include <ctype.h> */
55 #include <sys/syscall.h>
57 #include "mpers_type.h"
58 #include "gcc_compat.h"
61 const char *strerror(int);
64 /* Some libc have stpcpy, some don't. Sigh...
65 * Roll our private implementation...
68 #define stpcpy strace_stpcpy
69 extern char *stpcpy(char *dst, const char *src);
73 # define offsetof(type, member) \
74 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL))
77 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
81 # define MAX(a, b) (((a) > (b)) ? (a) : (b))
84 # define MIN(a, b) (((a) < (b)) ? (a) : (b))
86 #define CLAMP(val, min, max) MIN(MAX(min, val), max)
88 /* Glibc has an efficient macro for sigemptyset
89 * (it just does one or two assignments of 0 to internal vector of longs).
91 #if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
92 # define sigemptyset __sigemptyset
95 /* Configuration section */
96 #ifndef DEFAULT_STRLEN
97 /* default maximum # of bytes printed in `printstr', change with -s switch */
98 # define DEFAULT_STRLEN 32
100 #ifndef DEFAULT_ACOLUMN
101 # define DEFAULT_ACOLUMN 40 /* default alignment column for results */
104 * Maximum number of args to a syscall.
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.
111 # ifdef LINUX_MIPSO32
117 /* default sorting method for call profiling */
118 #ifndef DEFAULT_SORTBY
119 # define DEFAULT_SORTBY "time"
122 * Experimental code using PTRACE_SEIZE can be enabled here.
123 * This needs Linux kernel 3.4.x or later to work.
126 /* To force NOMMU build, set to 1 */
127 #define NOMMU_SYSTEM 0
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.
136 #define USE_CUSTOM_PRINTF 0
139 # define ERESTARTSYS 512
141 #ifndef ERESTARTNOINTR
142 # define ERESTARTNOINTR 513
144 #ifndef ERESTARTNOHAND
145 # define ERESTARTNOHAND 514
147 #ifndef ERESTART_RESTARTBLOCK
148 # define ERESTART_RESTARTBLOCK 516
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 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
166 # define SUPPORTED_PERSONALITIES 3
167 # define PERSONALITY0_WORDSIZE 8
168 # define PERSONALITY1_WORDSIZE 4
169 # define PERSONALITY2_WORDSIZE 4
170 # ifdef HAVE_M32_MPERS
171 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
172 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
173 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
174 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
176 # ifdef HAVE_MX32_MPERS
177 # define PERSONALITY2_INCLUDE_FUNCS "mx32_funcs.h"
178 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "mx32_printer_decls.h"
179 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "mx32_printer_defs.h"
180 # define MPERS_mx32_IOCTL_MACROS "ioctl_redefs2.h"
185 # define SUPPORTED_PERSONALITIES 2
186 # define PERSONALITY0_WORDSIZE 4
187 # define PERSONALITY1_WORDSIZE 4
188 # ifdef HAVE_M32_MPERS
189 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
190 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
191 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
192 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
197 /* one personality */
201 /* The existing ARM personality, then AArch64 */
202 # define SUPPORTED_PERSONALITIES 2
203 # define PERSONALITY0_WORDSIZE 8
204 # define PERSONALITY1_WORDSIZE 4
205 # ifdef HAVE_M32_MPERS
206 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
207 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
208 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
209 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
214 # define SUPPORTED_PERSONALITIES 2
215 # define PERSONALITY0_WORDSIZE 8
216 # define PERSONALITY1_WORDSIZE 4
217 # ifdef HAVE_M32_MPERS
218 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
219 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
220 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
221 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
226 # define SUPPORTED_PERSONALITIES 2
227 # define PERSONALITY0_WORDSIZE 8
228 # define PERSONALITY1_WORDSIZE 4
230 # define DEFAULT_PERSONALITY 1
232 # ifdef HAVE_M32_MPERS
233 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
234 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
235 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
236 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
240 #ifndef SUPPORTED_PERSONALITIES
241 # define SUPPORTED_PERSONALITIES 1
243 #ifndef DEFAULT_PERSONALITY
244 # define DEFAULT_PERSONALITY 0
246 #ifndef PERSONALITY0_WORDSIZE
247 # define PERSONALITY0_WORDSIZE SIZEOF_LONG
250 #ifndef PERSONALITY0_INCLUDE_PRINTERS_DECLS
251 # define PERSONALITY0_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
253 #ifndef PERSONALITY0_INCLUDE_PRINTERS_DEFS
254 # define PERSONALITY0_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
257 #ifndef PERSONALITY1_INCLUDE_PRINTERS_DECLS
258 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
260 #ifndef PERSONALITY1_INCLUDE_PRINTERS_DEFS
261 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
264 #ifndef PERSONALITY2_INCLUDE_PRINTERS_DECLS
265 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
267 #ifndef PERSONALITY2_INCLUDE_PRINTERS_DEFS
268 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
271 #ifndef PERSONALITY1_INCLUDE_FUNCS
272 # define PERSONALITY1_INCLUDE_FUNCS "empty.h"
274 #ifndef PERSONALITY2_INCLUDE_FUNCS
275 # define PERSONALITY2_INCLUDE_FUNCS "empty.h"
278 typedef struct sysent {
283 const char *sys_name;
286 typedef struct ioctlent {
291 #if defined LINUX_MIPSN32 || defined X32
292 # define HAVE_STRUCT_TCB_EXT_ARG 1
294 # define HAVE_STRUCT_TCB_EXT_ARG 0
297 /* Trace Control Block */
299 int flags; /* See below for TCB_ values */
300 int pid; /* If 0, this tcb is free */
301 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
302 int u_error; /* Error code */
303 long scno; /* System call number */
304 long u_arg[MAX_ARGS]; /* System call arguments */
305 #if HAVE_STRUCT_TCB_EXT_ARG
306 long long ext_arg[MAX_ARGS];
307 long long u_lrval; /* long long return value */
309 long u_rval; /* Return value */
310 #if SUPPORTED_PERSONALITIES > 1
311 unsigned int currpers; /* Personality at the time of scno update */
313 int sys_func_rval; /* Syscall entry parser's return value */
314 int curcol; /* Output column for this process */
315 FILE *outf; /* Output file for this process */
316 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
317 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
318 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
319 struct timeval stime; /* System time usage as of last process wait */
320 struct timeval dtime; /* Delta for system time usage */
321 struct timeval etime; /* Syscall entry time */
324 struct UPT_info* libunwind_ui;
325 struct mmap_cache_t* mmap_cache;
326 unsigned int mmap_cache_size;
327 unsigned int mmap_cache_generation;
328 struct queue_t* queue;
333 /* We have attached to this process, but did not see it stopping yet */
334 #define TCB_STARTUP 0x01
335 #define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
337 * Are we in system call entry or in syscall exit?
339 * This bit is set after all syscall entry processing is done.
340 * Therefore, this bit will be set when next ptrace stop occurs,
341 * which should be syscall exit stop. Other stops which are possible
342 * directly after syscall entry (death, ptrace event stop)
343 * are simpler and handled without calling trace_syscall(), therefore
344 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
345 * are limited to trace(), this condition is never observed in trace_syscall()
347 * The bit is cleared after all syscall exit processing is done.
349 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
351 #define TCB_INSYSCALL 0x04
352 #define TCB_ATTACHED 0x08 /* We attached to it already */
353 #define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */
354 #define TCB_FILTERED 0x20 /* This system call has been filtered out */
356 /* qualifier flags */
357 #define QUAL_TRACE 0x001 /* this system call should be traced */
358 #define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
359 #define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
360 #define QUAL_RAW 0x008 /* print all args in hex for this syscall */
361 #define QUAL_SIGNAL 0x010 /* report events with this signal */
362 #define QUAL_READ 0x020 /* dump data read on this file descriptor */
363 #define QUAL_WRITE 0x040 /* dump data written to this file descriptor */
364 typedef uint8_t qualbits_t;
366 #define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
368 #define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
369 #define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
370 #define syserror(tcp) ((tcp)->u_error != 0)
371 #define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
372 #define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
373 #define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
377 extern const struct xlat addrfams[];
378 extern const struct xlat at_flags[];
379 extern const struct xlat dirent_types[];
380 extern const struct xlat evdev_abs[];
381 extern const struct xlat open_access_modes[];
382 extern const struct xlat open_mode_flags[];
383 extern const struct xlat resource_flags[];
384 extern const struct xlat whence_codes[];
386 /* Format of syscall return values */
387 #define RVAL_DECIMAL 000 /* decimal format */
388 #define RVAL_HEX 001 /* hex format */
389 #define RVAL_OCTAL 002 /* octal format */
390 #define RVAL_UDECIMAL 003 /* unsigned decimal format */
391 #if HAVE_STRUCT_TCB_EXT_ARG
392 # if 0 /* unused so far */
393 # define RVAL_LDECIMAL 004 /* long decimal format */
394 # define RVAL_LHEX 005 /* long hex format */
395 # define RVAL_LOCTAL 006 /* long octal format */
397 # define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
398 #endif /* HAVE_STRUCT_TCB_EXT_ARG */
399 #define RVAL_FD 010 /* file descriptor */
400 #define RVAL_MASK 017 /* mask for these values */
402 #define RVAL_STR 020 /* Print `auxstr' field after return val */
403 #define RVAL_NONE 040 /* Print nothing */
405 #define RVAL_DECODED 0100 /* syscall decoding finished */
407 #define TRACE_FILE 001 /* Trace file-related syscalls. */
408 #define TRACE_IPC 002 /* Trace IPC-related syscalls. */
409 #define TRACE_NETWORK 004 /* Trace network-related syscalls. */
410 #define TRACE_PROCESS 010 /* Trace process-related syscalls. */
411 #define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
412 #define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
413 #define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
414 #define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
415 #define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */
416 #define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */
417 #define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */
419 #define IOCTL_NUMBER_UNKNOWN 0
420 #define IOCTL_NUMBER_HANDLED 1
421 #define IOCTL_NUMBER_STOP_LOOKUP 010
423 #define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL)
425 #if defined(ARM) || defined(AARCH64) \
426 || defined(I386) || defined(X32) || defined(X86_64) \
430 || defined(MICROBLAZE) \
432 || defined(SH) || defined(SH64) \
433 || defined(SPARC) || defined(SPARC64) \
435 # define NEED_UID16_PARSERS 1
437 # define NEED_UID16_PARSERS 0
445 extern cflag_t cflag;
446 extern bool debug_flag;
449 extern bool count_wallclock;
450 extern unsigned int qflag;
451 extern bool not_failing_only;
452 extern unsigned int show_fd_path;
453 extern bool hide_log_until_execve;
454 /* are we filtering traces based on paths? */
455 extern const char **paths_selected;
456 #define tracing_paths (paths_selected != NULL)
457 extern unsigned xflag;
458 extern unsigned followfork;
460 /* if this is true do the stack trace for every system call */
461 extern bool stack_trace_enabled;
463 extern unsigned ptrace_setoptions;
464 extern unsigned max_strlen;
465 extern unsigned os_release;
466 #undef KERNEL_VERSION
467 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
469 void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
470 void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
471 void error_msg_and_die(const char *fmt, ...)
472 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
473 void error_msg_and_help(const char *fmt, ...)
474 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
475 void perror_msg_and_die(const char *fmt, ...)
476 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
477 void die_out_of_memory(void) ATTRIBUTE_NORETURN;
479 void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
480 void *xcalloc(size_t nmemb, size_t size)
481 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2));
482 void *xreallocarray(void *ptr, size_t nmemb, size_t size)
483 ATTRIBUTE_ALLOC_SIZE((2, 3));
484 char *xstrdup(const char *str) ATTRIBUTE_MALLOC;
486 #if USE_CUSTOM_PRINTF
488 * See comment in vsprintf.c for allowed formats.
489 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
491 int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
493 # define strace_vfprintf vfprintf
496 extern void set_sortby(const char *);
497 extern void set_overhead(int);
498 extern void qualify(const char *);
499 extern void print_pc(struct tcb *);
500 extern int trace_syscall(struct tcb *);
501 extern void count_syscall(struct tcb *, const struct timeval *);
502 extern void call_summary(FILE *);
504 extern void clear_regs(void);
505 extern void get_regs(pid_t pid);
506 extern int get_scno(struct tcb *tcp);
507 extern const char *syscall_name(long scno);
509 extern bool is_erestart(struct tcb *);
510 extern void temporarily_clear_syserror(struct tcb *);
511 extern void restore_cleared_syserror(struct tcb *);
513 extern int umoven(struct tcb *, long, unsigned int, void *);
514 #define umove(pid, addr, objp) \
515 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
516 extern int umoven_or_printaddr(struct tcb *, long, unsigned int, void *);
517 #define umove_or_printaddr(pid, addr, objp) \
518 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
519 extern int umovestr(struct tcb *, long, unsigned int, char *);
520 extern int upeek(int pid, long, long *);
523 print_array(struct tcb *tcp,
524 const unsigned long start_addr,
526 void *const elem_buf,
527 const size_t elem_size,
528 int (*const umoven_func)(struct tcb *,
532 bool (*const print_func)(struct tcb *,
536 void *const opaque_data);
538 #if defined ALPHA || defined IA64 || defined MIPS \
539 || defined SH || defined SPARC || defined SPARC64
540 # define HAVE_GETRVAL2
541 extern long getrval2(struct tcb *);
543 # undef HAVE_GETRVAL2
546 extern const char *signame(const int);
547 extern void pathtrace_select(const char *);
548 extern int pathtrace_match(struct tcb *);
549 extern int getfdpath(struct tcb *, int, char *, unsigned);
551 extern const char *xlookup(const struct xlat *, const uint64_t);
552 extern const char *xlat_search(const struct xlat *, const size_t, const uint64_t);
554 extern unsigned long get_pagesize(void);
555 extern int string_to_uint(const char *str);
556 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
558 #define QUOTE_0_TERMINATED 0x01
559 #define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
561 extern int string_quote(const char *, char *, unsigned int, unsigned int);
562 extern int print_quoted_string(const char *, unsigned int, unsigned int);
564 /* a refers to the lower numbered u_arg,
565 * b refers to the higher numbered u_arg
567 #ifdef WORDS_BIGENDIAN
568 # define LONG_LONG(a,b) \
569 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
571 # define LONG_LONG(a,b) \
572 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
574 extern int getllval(struct tcb *, unsigned long long *, int);
575 extern int printllval(struct tcb *, const char *, int)
576 ATTRIBUTE_FORMAT((printf, 2, 0));
578 extern void printaddr(long);
579 extern void printxvals(const uint64_t, const char *, const struct xlat *, ...)
581 extern int printargs(struct tcb *);
582 extern int printargs_u(struct tcb *);
583 extern int printargs_d(struct tcb *);
585 extern void addflags(const struct xlat *, uint64_t);
586 extern int printflags64(const struct xlat *, uint64_t, const char *);
587 extern const char *sprintflags(const char *, const struct xlat *, uint64_t);
588 extern const char *sprintmode(unsigned int);
589 extern const char *sprinttime(time_t);
590 extern void dumpiov_in_msghdr(struct tcb *, long, unsigned long);
591 extern void dumpiov_in_mmsghdr(struct tcb *, long);
592 extern void dumpiov_upto(struct tcb *, int, long, unsigned long);
593 #define dumpiov(tcp, len, addr) \
594 dumpiov_upto((tcp), (len), (addr), (unsigned long) -1L)
595 extern void dumpstr(struct tcb *, long, int);
596 extern void printstr(struct tcb *, long, long);
597 extern bool printnum_short(struct tcb *, long, const char *)
598 ATTRIBUTE_FORMAT((printf, 3, 0));
599 extern bool printnum_int(struct tcb *, long, const char *)
600 ATTRIBUTE_FORMAT((printf, 3, 0));
601 extern bool printnum_int64(struct tcb *, long, const char *)
602 ATTRIBUTE_FORMAT((printf, 3, 0));
604 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
605 extern bool printnum_long_int(struct tcb *, long, const char *, const char *)
606 ATTRIBUTE_FORMAT((printf, 3, 0))
607 ATTRIBUTE_FORMAT((printf, 4, 0));
608 # define printnum_slong(tcp, addr) \
609 printnum_long_int((tcp), (addr), "%" PRId64, "%d")
610 # define printnum_ulong(tcp, addr) \
611 printnum_long_int((tcp), (addr), "%" PRIu64, "%u")
612 # define printnum_ptr(tcp, addr) \
613 printnum_long_int((tcp), (addr), "%#" PRIx64, "%#x")
614 #elif SIZEOF_LONG > 4
615 # define printnum_slong(tcp, addr) \
616 printnum_int64((tcp), (addr), "%" PRId64)
617 # define printnum_ulong(tcp, addr) \
618 printnum_int64((tcp), (addr), "%" PRIu64)
619 # define printnum_ptr(tcp, addr) \
620 printnum_int64((tcp), (addr), "%#" PRIx64)
622 # define printnum_slong(tcp, addr) \
623 printnum_int((tcp), (addr), "%d")
624 # define printnum_ulong(tcp, addr) \
625 printnum_int((tcp), (addr), "%u")
626 # define printnum_ptr(tcp, addr) \
627 printnum_int((tcp), (addr), "%#x")
630 extern bool printpair_int(struct tcb *, long, const char *)
631 ATTRIBUTE_FORMAT((printf, 3, 0));
632 extern bool printpair_int64(struct tcb *, long, const char *)
633 ATTRIBUTE_FORMAT((printf, 3, 0));
634 extern void printpath(struct tcb *, long);
635 extern void printpathn(struct tcb *, long, unsigned int);
636 #define TIMESPEC_TEXT_BUFSIZE \
637 (sizeof(intmax_t)*3 * 2 + sizeof("{tv_sec=%jd, tv_nsec=%jd}"))
638 extern void printfd(struct tcb *, int);
639 extern bool print_sockaddr_by_inode(const unsigned long, const char *);
640 extern bool print_sockaddr_by_inode_cached(const unsigned long);
641 extern void print_dirfd(struct tcb *, int);
642 extern void printsock(struct tcb *, long, int);
643 extern void print_sock_optmgmt(struct tcb *, long, int);
645 extern void printrusage32(struct tcb *, long);
646 extern const char *sprint_timeval32(struct tcb *tcp, long);
647 extern void print_timeval32(struct tcb *tcp, long);
648 extern void print_timeval32_pair(struct tcb *tcp, long);
649 extern void print_itimerval32(struct tcb *tcp, long);
651 extern void printuid(const char *, const unsigned int);
652 extern void print_sigset_addr_len(struct tcb *, long, long);
653 extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
654 #define tprintsigmask_addr(prefix, mask) \
655 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
656 extern void printsignal(int);
657 extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
658 extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long);
659 extern void tprint_open_modes(unsigned int);
660 extern const char *sprint_open_modes(unsigned int);
661 extern void print_seccomp_filter(struct tcb *, unsigned long);
662 extern void print_seccomp_fprog(struct tcb *, unsigned long, unsigned short);
664 struct strace_statfs;
665 extern void print_struct_statfs(struct tcb *tcp, long);
666 extern void print_struct_statfs64(struct tcb *tcp, long, unsigned long);
668 extern int file_ioctl(struct tcb *, const unsigned int, long);
669 extern int fs_x_ioctl(struct tcb *, const unsigned int, long);
670 extern int loop_ioctl(struct tcb *, const unsigned int, long);
671 extern int ptp_ioctl(struct tcb *, const unsigned int, long);
672 extern int scsi_ioctl(struct tcb *, const unsigned int, long);
673 extern int sock_ioctl(struct tcb *, const unsigned int, long);
674 extern int term_ioctl(struct tcb *, const unsigned int, long);
675 extern int ubi_ioctl(struct tcb *, const unsigned int, long);
676 extern int uffdio_ioctl(struct tcb *, const unsigned int, long);
678 extern int tv_nz(const struct timeval *);
679 extern int tv_cmp(const struct timeval *, const struct timeval *);
680 extern double tv_float(const struct timeval *);
681 extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *);
682 extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *);
683 extern void tv_mul(struct timeval *, const struct timeval *, int);
684 extern void tv_div(struct timeval *, const struct timeval *, int);
687 extern void unwind_init(void);
688 extern void unwind_tcb_init(struct tcb *tcp);
689 extern void unwind_tcb_fin(struct tcb *tcp);
690 extern void unwind_cache_invalidate(struct tcb* tcp);
691 extern void unwind_print_stacktrace(struct tcb* tcp);
692 extern void unwind_capture_stacktrace(struct tcb* tcp);
696 printflags(const struct xlat *x, unsigned int flags, const char *dflt)
698 return printflags64(x, flags, dflt);
702 printflags_long(const struct xlat *x, unsigned long flags, const char *dflt)
704 return printflags64(x, flags, dflt);
708 printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
710 printxvals(val, dflt, x, NULL);
714 printxval(const struct xlat *x, const unsigned int val, const char *dflt)
716 printxvals(val, dflt, x, NULL);
720 printxval_long(const struct xlat *x, const unsigned long val, const char *dflt)
722 printxvals(val, dflt, x, NULL);
725 /* Strace log generation machinery.
727 * printing_tcp: tcb which has incomplete line being printed right now.
728 * NULL if last line has been completed ('\n'-terminated).
729 * printleader(tcp) examines it, finishes incomplete line if needed,
730 * the sets it to tcp.
731 * line_ended() clears printing_tcp and resets ->curcol = 0.
732 * tcp->curcol == 0 check is also used to detect completeness
733 * of last line, since in -ff mode just checking printing_tcp for NULL
736 * If you change this code, test log generation in both -f and -ff modes
738 * strace -oLOG -f[f] test/threaded_execve
739 * strace -oLOG -f[f] test/sigkill_rain
740 * strace -oLOG -f[f] -p "`pidof web_browser`"
742 extern struct tcb *printing_tcp;
743 extern void printleader(struct tcb *);
744 extern void line_ended(void);
745 extern void tabto(void);
746 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
747 extern void tprints(const char *str);
749 #if SUPPORTED_PERSONALITIES > 1
750 extern void set_personality(int personality);
751 extern unsigned current_personality;
753 # define set_personality(personality) ((void)0)
754 # define current_personality 0
757 #if SUPPORTED_PERSONALITIES == 1
758 # define current_wordsize PERSONALITY0_WORDSIZE
760 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
761 # define current_wordsize PERSONALITY0_WORDSIZE
763 extern unsigned current_wordsize;
767 /* In many, many places we play fast and loose and use
768 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
769 * We probably need to use widen_to_long() instead:
771 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
772 # define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
774 # define widen_to_long(v) ((long)(v))
778 * Widen without sign-extension a signed integer type to unsigned long long.
780 #define widen_to_ull(v) \
781 (sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
782 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
783 (unsigned long long) (v))
785 extern const struct_sysent sysent0[];
786 extern const char *const errnoent0[];
787 extern const char *const signalent0[];
788 extern const struct_ioctlent ioctlent0[];
789 extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
790 #define qual_flags (qual_vec[current_personality])
792 #if SUPPORTED_PERSONALITIES > 1
793 extern const struct_sysent *sysent;
794 extern const char *const *errnoent;
795 extern const char *const *signalent;
796 extern const struct_ioctlent *ioctlent;
798 # define sysent sysent0
799 # define errnoent errnoent0
800 # define signalent signalent0
801 # define ioctlent ioctlent0
804 extern unsigned nsyscalls;
805 extern unsigned nerrnos;
806 extern unsigned nsignals;
807 extern unsigned nioctlents;
808 extern unsigned num_quals;
810 #ifdef IN_MPERS_BOOTSTRAP
811 /* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
812 # define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
813 #else /* !IN_MPERS_BOOTSTRAP */
814 # if SUPPORTED_PERSONALITIES > 1
815 # include "printers.h"
817 # include "native_printer_decls.h"
819 # define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
820 #endif /* !IN_MPERS_BOOTSTRAP */
823 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
825 #define SCNO_IS_VALID(scno) \
826 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
828 /* Only ensures that sysent[scno] isn't out of range */
829 #define SCNO_IN_RANGE(scno) \
830 ((unsigned long)(scno) < nsyscalls)
832 #define MPERS_FUNC_NAME__(prefix, name) prefix ## name
833 #define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
834 #define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
836 #define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
838 #define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
841 * The kernel used to define 64-bit types on 64-bit systems on a per-arch
842 * basis. Some architectures would use unsigned long and others would use
843 * unsigned long long. These types were exported as part of the
844 * kernel-userspace ABI and now must be maintained forever. This matches
845 * what the kernel exports for each architecture so we don't need to cast
846 * every printing of __u64 or __s64 to stdint types.
849 # define PRI__64 "ll"
850 #elif defined ALPHA || defined IA64 || defined MIPS || defined POWERPC
853 # define PRI__64 "ll"
856 #define PRI__d64 PRI__64"d"
857 #define PRI__u64 PRI__64"u"
858 #define PRI__x64 PRI__64"x"