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.
43 #include <sys/types.h>
50 /* Open-coding isprint(ch) et al proved more efficient than calling
51 * generalized libc interface. We don't *want* to do non-ASCII anyway.
53 /* #include <ctype.h> */
58 #include <sys/syscall.h>
60 #include "mpers_type.h"
61 #include "gcc_compat.h"
64 const char *strerror(int);
67 /* Some libc have stpcpy, some don't. Sigh...
68 * Roll our private implementation...
71 #define stpcpy strace_stpcpy
72 extern char *stpcpy(char *dst, const char *src);
76 # define offsetof(type, member) \
77 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL))
80 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
84 # define MAX(a, b) (((a) > (b)) ? (a) : (b))
87 # define MIN(a, b) (((a) < (b)) ? (a) : (b))
89 #define CLAMP(val, min, max) MIN(MAX(min, val), max)
91 /* Glibc has an efficient macro for sigemptyset
92 * (it just does one or two assignments of 0 to internal vector of longs).
94 #if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
95 # define sigemptyset __sigemptyset
98 /* Configuration section */
99 #ifndef DEFAULT_STRLEN
100 /* default maximum # of bytes printed in `printstr', change with -s switch */
101 # define DEFAULT_STRLEN 32
103 #ifndef DEFAULT_ACOLUMN
104 # define DEFAULT_ACOLUMN 40 /* default alignment column for results */
107 * Maximum number of args to a syscall.
109 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS!
110 * linux/<ARCH>/syscallent*.h:
111 * all have nargs <= 6 except mips o32 which has nargs <= 7.
114 # ifdef LINUX_MIPSO32
120 /* default sorting method for call profiling */
121 #ifndef DEFAULT_SORTBY
122 # define DEFAULT_SORTBY "time"
125 * Experimental code using PTRACE_SEIZE can be enabled here.
126 * This needs Linux kernel 3.4.x or later to work.
129 /* To force NOMMU build, set to 1 */
130 #define NOMMU_SYSTEM 0
132 * Set to 1 to use speed-optimized vfprintf implementation.
133 * It results in strace using about 5% less CPU in user space
134 * (compared to glibc version).
135 * But strace spends a lot of time in kernel space,
136 * so overall it does not appear to be a significant win.
137 * Thus disabled by default.
139 #define USE_CUSTOM_PRINTF 0
142 # define ERESTARTSYS 512
144 #ifndef ERESTARTNOINTR
145 # define ERESTARTNOINTR 513
147 #ifndef ERESTARTNOHAND
148 # define ERESTARTNOHAND 514
150 #ifndef ERESTART_RESTARTBLOCK
151 # define ERESTART_RESTARTBLOCK 516
154 #if defined(SPARC) || defined(SPARC64)
155 # define PERSONALITY0_WORDSIZE 4
156 # if defined(SPARC64)
157 # define SUPPORTED_PERSONALITIES 2
158 # define PERSONALITY1_WORDSIZE 8
159 # ifdef HAVE_M32_MPERS
160 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
161 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
162 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
163 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
169 # define SUPPORTED_PERSONALITIES 3
170 # define PERSONALITY0_WORDSIZE 8
171 # define PERSONALITY1_WORDSIZE 4
172 # define PERSONALITY2_WORDSIZE 4
173 # ifdef HAVE_M32_MPERS
174 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
175 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
176 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
177 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
179 # ifdef HAVE_MX32_MPERS
180 # define PERSONALITY2_INCLUDE_FUNCS "mx32_funcs.h"
181 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "mx32_printer_decls.h"
182 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "mx32_printer_defs.h"
183 # define MPERS_mx32_IOCTL_MACROS "ioctl_redefs2.h"
188 # define SUPPORTED_PERSONALITIES 2
189 # define PERSONALITY0_WORDSIZE 4
190 # define PERSONALITY1_WORDSIZE 4
191 # ifdef HAVE_M32_MPERS
192 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
193 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
194 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
195 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
200 /* one personality */
204 /* The existing ARM personality, then AArch64 */
205 # define SUPPORTED_PERSONALITIES 2
206 # define PERSONALITY0_WORDSIZE 8
207 # define PERSONALITY1_WORDSIZE 4
208 # ifdef HAVE_M32_MPERS
209 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
210 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
211 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
212 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
217 # define SUPPORTED_PERSONALITIES 2
218 # define PERSONALITY0_WORDSIZE 8
219 # define PERSONALITY1_WORDSIZE 4
220 # ifdef HAVE_M32_MPERS
221 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
222 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
223 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
224 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
229 # define SUPPORTED_PERSONALITIES 2
230 # define PERSONALITY0_WORDSIZE 8
231 # define PERSONALITY1_WORDSIZE 4
233 # define DEFAULT_PERSONALITY 1
235 # ifdef HAVE_M32_MPERS
236 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
237 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
238 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
239 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
243 #ifndef SUPPORTED_PERSONALITIES
244 # define SUPPORTED_PERSONALITIES 1
246 #ifndef DEFAULT_PERSONALITY
247 # define DEFAULT_PERSONALITY 0
249 #ifndef PERSONALITY0_WORDSIZE
250 # define PERSONALITY0_WORDSIZE SIZEOF_LONG
253 #ifndef PERSONALITY0_INCLUDE_PRINTERS_DECLS
254 # define PERSONALITY0_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
256 #ifndef PERSONALITY0_INCLUDE_PRINTERS_DEFS
257 # define PERSONALITY0_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
260 #ifndef PERSONALITY1_INCLUDE_PRINTERS_DECLS
261 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
263 #ifndef PERSONALITY1_INCLUDE_PRINTERS_DEFS
264 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
267 #ifndef PERSONALITY2_INCLUDE_PRINTERS_DECLS
268 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
270 #ifndef PERSONALITY2_INCLUDE_PRINTERS_DEFS
271 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
274 #ifndef PERSONALITY1_INCLUDE_FUNCS
275 # define PERSONALITY1_INCLUDE_FUNCS "empty.h"
277 #ifndef PERSONALITY2_INCLUDE_FUNCS
278 # define PERSONALITY2_INCLUDE_FUNCS "empty.h"
281 typedef struct sysent {
286 const char *sys_name;
289 typedef struct ioctlent {
294 #if defined LINUX_MIPSN32 || defined X32
295 # define HAVE_STRUCT_TCB_EXT_ARG 1
297 # define HAVE_STRUCT_TCB_EXT_ARG 0
300 /* Trace Control Block */
302 int flags; /* See below for TCB_ values */
303 int pid; /* If 0, this tcb is free */
304 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
305 int u_error; /* Error code */
306 long scno; /* System call number */
307 long u_arg[MAX_ARGS]; /* System call arguments */
308 #if HAVE_STRUCT_TCB_EXT_ARG
309 long long ext_arg[MAX_ARGS];
310 long long u_lrval; /* long long return value */
312 long u_rval; /* Return value */
313 #if SUPPORTED_PERSONALITIES > 1
314 unsigned int currpers; /* Personality at the time of scno update */
316 int sys_func_rval; /* Syscall entry parser's return value */
317 int curcol; /* Output column for this process */
318 FILE *outf; /* Output file for this process */
319 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
320 void *_priv_data; /* Private data for syscall decoding functions */
321 void (*_free_priv_data)(void *); /* Callback for freeing priv_data */
322 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
323 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
324 struct timeval stime; /* System time usage as of last process wait */
325 struct timeval dtime; /* Delta for system time usage */
326 struct timeval etime; /* Syscall entry time */
329 struct UPT_info* libunwind_ui;
330 struct mmap_cache_t* mmap_cache;
331 unsigned int mmap_cache_size;
332 unsigned int mmap_cache_generation;
333 struct queue_t* queue;
338 /* We have attached to this process, but did not see it stopping yet */
339 #define TCB_STARTUP 0x01
340 #define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
342 * Are we in system call entry or in syscall exit?
344 * This bit is set after all syscall entry processing is done.
345 * Therefore, this bit will be set when next ptrace stop occurs,
346 * which should be syscall exit stop. Other stops which are possible
347 * directly after syscall entry (death, ptrace event stop)
348 * are simpler and handled without calling trace_syscall(), therefore
349 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
350 * are limited to trace(), this condition is never observed in trace_syscall()
352 * The bit is cleared after all syscall exit processing is done.
354 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
356 #define TCB_INSYSCALL 0x04
357 #define TCB_ATTACHED 0x08 /* We attached to it already */
358 #define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */
359 #define TCB_FILTERED 0x20 /* This system call has been filtered out */
361 /* qualifier flags */
362 #define QUAL_TRACE 0x001 /* this system call should be traced */
363 #define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
364 #define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
365 #define QUAL_RAW 0x008 /* print all args in hex for this syscall */
366 #define QUAL_SIGNAL 0x010 /* report events with this signal */
367 #define QUAL_READ 0x020 /* dump data read on this file descriptor */
368 #define QUAL_WRITE 0x040 /* dump data written to this file descriptor */
369 typedef uint8_t qualbits_t;
371 #define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
373 #define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
374 #define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
375 #define syserror(tcp) ((tcp)->u_error != 0)
376 #define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
377 #define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
378 #define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
382 extern const struct xlat addrfams[];
383 extern const struct xlat at_flags[];
384 extern const struct xlat dirent_types[];
385 extern const struct xlat evdev_abs[];
386 extern const struct xlat msg_flags[];
387 extern const struct xlat open_access_modes[];
388 extern const struct xlat open_mode_flags[];
389 extern const struct xlat resource_flags[];
390 extern const struct xlat socketlayers[];
391 extern const struct xlat whence_codes[];
393 /* Format of syscall return values */
394 #define RVAL_DECIMAL 000 /* decimal format */
395 #define RVAL_HEX 001 /* hex format */
396 #define RVAL_OCTAL 002 /* octal format */
397 #define RVAL_UDECIMAL 003 /* unsigned decimal format */
398 #if HAVE_STRUCT_TCB_EXT_ARG
399 # if 0 /* unused so far */
400 # define RVAL_LDECIMAL 004 /* long decimal format */
401 # define RVAL_LHEX 005 /* long hex format */
402 # define RVAL_LOCTAL 006 /* long octal format */
404 # define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
405 #endif /* HAVE_STRUCT_TCB_EXT_ARG */
406 #define RVAL_FD 010 /* file descriptor */
407 #define RVAL_MASK 017 /* mask for these values */
409 #define RVAL_STR 020 /* Print `auxstr' field after return val */
410 #define RVAL_NONE 040 /* Print nothing */
412 #define RVAL_DECODED 0100 /* syscall decoding finished */
414 #define TRACE_FILE 001 /* Trace file-related syscalls. */
415 #define TRACE_IPC 002 /* Trace IPC-related syscalls. */
416 #define TRACE_NETWORK 004 /* Trace network-related syscalls. */
417 #define TRACE_PROCESS 010 /* Trace process-related syscalls. */
418 #define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
419 #define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
420 #define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
421 #define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
422 #define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */
423 #define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */
424 #define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */
426 #define IOCTL_NUMBER_UNKNOWN 0
427 #define IOCTL_NUMBER_HANDLED 1
428 #define IOCTL_NUMBER_STOP_LOOKUP 010
430 #define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL)
432 #if defined(ARM) || defined(AARCH64) \
433 || defined(I386) || defined(X32) || defined(X86_64) \
437 || defined(MICROBLAZE) \
439 || defined(SH) || defined(SH64) \
440 || defined(SPARC) || defined(SPARC64) \
442 # define NEED_UID16_PARSERS 1
444 # define NEED_UID16_PARSERS 0
456 extern enum sock_proto get_proto_by_name(const char *);
469 extern cflag_t cflag;
470 extern bool debug_flag;
473 extern bool count_wallclock;
474 extern unsigned int qflag;
475 extern bool not_failing_only;
476 extern unsigned int show_fd_path;
477 extern bool hide_log_until_execve;
478 /* are we filtering traces based on paths? */
479 extern const char **paths_selected;
480 #define tracing_paths (paths_selected != NULL)
481 extern unsigned xflag;
482 extern unsigned followfork;
484 /* if this is true do the stack trace for every system call */
485 extern bool stack_trace_enabled;
487 extern unsigned ptrace_setoptions;
488 extern unsigned max_strlen;
489 extern unsigned os_release;
490 #undef KERNEL_VERSION
491 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
493 void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
494 void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
495 void error_msg_and_die(const char *fmt, ...)
496 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
497 void error_msg_and_help(const char *fmt, ...)
498 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
499 void perror_msg_and_die(const char *fmt, ...)
500 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
501 void die_out_of_memory(void) ATTRIBUTE_NORETURN;
503 void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
504 void *xcalloc(size_t nmemb, size_t size)
505 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2));
506 void *xreallocarray(void *ptr, size_t nmemb, size_t size)
507 ATTRIBUTE_ALLOC_SIZE((2, 3));
508 char *xstrdup(const char *str) ATTRIBUTE_MALLOC;
510 #if USE_CUSTOM_PRINTF
512 * See comment in vsprintf.c for allowed formats.
513 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
515 int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
517 # define strace_vfprintf vfprintf
520 extern int read_int_from_file(const char *, int *);
522 extern void set_sortby(const char *);
523 extern void set_overhead(int);
524 extern void qualify(const char *);
525 extern void print_pc(struct tcb *);
526 extern int trace_syscall(struct tcb *);
527 extern void count_syscall(struct tcb *, const struct timeval *);
528 extern void call_summary(FILE *);
530 extern void clear_regs(void);
531 extern void get_regs(pid_t pid);
532 extern int get_scno(struct tcb *tcp);
533 extern const char *syscall_name(long scno);
535 extern bool is_erestart(struct tcb *);
536 extern void temporarily_clear_syserror(struct tcb *);
537 extern void restore_cleared_syserror(struct tcb *);
539 extern void *get_tcb_priv_data(const struct tcb *);
540 extern int set_tcb_priv_data(struct tcb *, void *priv_data,
541 void (*free_priv_data)(void *));
542 extern void free_tcb_priv_data(struct tcb *);
544 static inline unsigned long get_tcb_priv_ulong(const struct tcb *tcp)
546 return (unsigned long) get_tcb_priv_data(tcp);
549 static inline int set_tcb_priv_ulong(struct tcb *tcp, unsigned long val)
551 return set_tcb_priv_data(tcp, (void *) val, 0);
554 extern int umoven(struct tcb *, long, unsigned int, void *);
555 #define umove(pid, addr, objp) \
556 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
557 extern int umoven_or_printaddr(struct tcb *, long, unsigned int, void *);
558 #define umove_or_printaddr(pid, addr, objp) \
559 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
560 extern int umovestr(struct tcb *, long, unsigned int, char *);
561 extern int upeek(int pid, long, long *);
564 print_array(struct tcb *tcp,
565 const unsigned long start_addr,
567 void *const elem_buf,
568 const size_t elem_size,
569 int (*const umoven_func)(struct tcb *,
573 bool (*const print_func)(struct tcb *,
577 void *const opaque_data);
579 #if defined ALPHA || defined IA64 || defined MIPS \
580 || defined SH || defined SPARC || defined SPARC64
581 # define HAVE_GETRVAL2
582 extern long getrval2(struct tcb *);
584 # undef HAVE_GETRVAL2
587 extern const char *signame(const int);
588 extern void pathtrace_select(const char *);
589 extern int pathtrace_match(struct tcb *);
590 extern int getfdpath(struct tcb *, int, char *, unsigned);
591 extern enum sock_proto getfdproto(struct tcb *, int);
593 extern const char *xlookup(const struct xlat *, const uint64_t);
594 extern const char *xlat_search(const struct xlat *, const size_t, const uint64_t);
596 extern unsigned long get_pagesize(void);
597 extern int string_to_uint(const char *str);
598 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
600 #define QUOTE_0_TERMINATED 0x01
601 #define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
603 extern int string_quote(const char *, char *, unsigned int, unsigned int);
604 extern int print_quoted_string(const char *, unsigned int, unsigned int);
606 /* a refers to the lower numbered u_arg,
607 * b refers to the higher numbered u_arg
609 #ifdef WORDS_BIGENDIAN
610 # define LONG_LONG(a,b) \
611 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
613 # define LONG_LONG(a,b) \
614 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
616 extern int getllval(struct tcb *, unsigned long long *, int);
617 extern int printllval(struct tcb *, const char *, int)
618 ATTRIBUTE_FORMAT((printf, 2, 0));
620 extern void printaddr(long);
621 extern void printxvals(const uint64_t, const char *, const struct xlat *, ...)
623 extern int printargs(struct tcb *);
624 extern int printargs_u(struct tcb *);
625 extern int printargs_d(struct tcb *);
627 extern void addflags(const struct xlat *, uint64_t);
628 extern int printflags64(const struct xlat *, uint64_t, const char *);
629 extern const char *sprintflags(const char *, const struct xlat *, uint64_t);
630 extern const char *sprinttime(time_t);
631 extern void print_symbolic_mode_t(unsigned int);
632 extern void print_numeric_umode_t(unsigned short);
633 extern void print_numeric_long_umask(unsigned long);
634 extern void dumpiov_in_msghdr(struct tcb *, long, unsigned long);
635 extern void dumpiov_in_mmsghdr(struct tcb *, long);
636 extern void dumpiov_upto(struct tcb *, int, long, unsigned long);
637 #define dumpiov(tcp, len, addr) \
638 dumpiov_upto((tcp), (len), (addr), (unsigned long) -1L)
639 extern void dumpstr(struct tcb *, long, int);
640 extern void printstr(struct tcb *, long, long);
641 extern bool printnum_short(struct tcb *, long, const char *)
642 ATTRIBUTE_FORMAT((printf, 3, 0));
643 extern bool printnum_int(struct tcb *, long, const char *)
644 ATTRIBUTE_FORMAT((printf, 3, 0));
645 extern bool printnum_int64(struct tcb *, long, const char *)
646 ATTRIBUTE_FORMAT((printf, 3, 0));
648 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
649 extern bool printnum_long_int(struct tcb *, long, const char *, const char *)
650 ATTRIBUTE_FORMAT((printf, 3, 0))
651 ATTRIBUTE_FORMAT((printf, 4, 0));
652 # define printnum_slong(tcp, addr) \
653 printnum_long_int((tcp), (addr), "%" PRId64, "%d")
654 # define printnum_ulong(tcp, addr) \
655 printnum_long_int((tcp), (addr), "%" PRIu64, "%u")
656 # define printnum_ptr(tcp, addr) \
657 printnum_long_int((tcp), (addr), "%#" PRIx64, "%#x")
658 #elif SIZEOF_LONG > 4
659 # define printnum_slong(tcp, addr) \
660 printnum_int64((tcp), (addr), "%" PRId64)
661 # define printnum_ulong(tcp, addr) \
662 printnum_int64((tcp), (addr), "%" PRIu64)
663 # define printnum_ptr(tcp, addr) \
664 printnum_int64((tcp), (addr), "%#" PRIx64)
666 # define printnum_slong(tcp, addr) \
667 printnum_int((tcp), (addr), "%d")
668 # define printnum_ulong(tcp, addr) \
669 printnum_int((tcp), (addr), "%u")
670 # define printnum_ptr(tcp, addr) \
671 printnum_int((tcp), (addr), "%#x")
674 extern bool printpair_int(struct tcb *, long, const char *)
675 ATTRIBUTE_FORMAT((printf, 3, 0));
676 extern bool printpair_int64(struct tcb *, long, const char *)
677 ATTRIBUTE_FORMAT((printf, 3, 0));
678 extern void printpath(struct tcb *, long);
679 extern void printpathn(struct tcb *, long, unsigned int);
680 #define TIMESPEC_TEXT_BUFSIZE \
681 (sizeof(intmax_t)*3 * 2 + sizeof("{tv_sec=%jd, tv_nsec=%jd}"))
682 extern void printfd(struct tcb *, int);
683 extern void print_sockaddr(struct tcb *tcp, const void *, int);
684 extern bool print_sockaddr_by_inode(const unsigned long, const enum sock_proto);
685 extern bool print_sockaddr_by_inode_cached(const unsigned long);
686 extern void print_dirfd(struct tcb *, int);
687 extern int decode_sockaddr(struct tcb *, long, int);
689 extern void printrusage32(struct tcb *, long);
690 extern const char *sprint_timeval32(struct tcb *tcp, long);
691 extern void print_timeval32(struct tcb *tcp, long);
692 extern void print_timeval32_pair(struct tcb *tcp, long);
693 extern void print_itimerval32(struct tcb *tcp, long);
695 extern void printuid(const char *, const unsigned int);
696 extern void print_sigset_addr_len(struct tcb *, long, long);
697 extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
698 #define tprintsigmask_addr(prefix, mask) \
699 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
700 extern void printsignal(int);
701 extern void tprint_iov(struct tcb *, unsigned long, unsigned long, enum iov_decode);
702 extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long,
703 enum iov_decode, unsigned long);
704 extern void decode_netlink(struct tcb *, unsigned long, unsigned long);
705 extern void tprint_open_modes(unsigned int);
706 extern const char *sprint_open_modes(unsigned int);
707 extern void print_seccomp_filter(struct tcb *, unsigned long);
708 extern void print_seccomp_fprog(struct tcb *, unsigned long, unsigned short);
710 struct strace_statfs;
711 extern void print_struct_statfs(struct tcb *tcp, long);
712 extern void print_struct_statfs64(struct tcb *tcp, long, unsigned long);
714 extern void print_ifindex(unsigned int);
716 extern int file_ioctl(struct tcb *, const unsigned int, long);
717 extern int fs_x_ioctl(struct tcb *, const unsigned int, long);
718 extern int loop_ioctl(struct tcb *, const unsigned int, long);
719 extern int ptp_ioctl(struct tcb *, const unsigned int, long);
720 extern int scsi_ioctl(struct tcb *, const unsigned int, long);
721 extern int sock_ioctl(struct tcb *, const unsigned int, long);
722 extern int term_ioctl(struct tcb *, const unsigned int, long);
723 extern int ubi_ioctl(struct tcb *, const unsigned int, long);
724 extern int uffdio_ioctl(struct tcb *, const unsigned int, long);
726 extern int tv_nz(const struct timeval *);
727 extern int tv_cmp(const struct timeval *, const struct timeval *);
728 extern double tv_float(const struct timeval *);
729 extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *);
730 extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *);
731 extern void tv_mul(struct timeval *, const struct timeval *, int);
732 extern void tv_div(struct timeval *, const struct timeval *, int);
735 extern void unwind_init(void);
736 extern void unwind_tcb_init(struct tcb *tcp);
737 extern void unwind_tcb_fin(struct tcb *tcp);
738 extern void unwind_cache_invalidate(struct tcb* tcp);
739 extern void unwind_print_stacktrace(struct tcb* tcp);
740 extern void unwind_capture_stacktrace(struct tcb* tcp);
744 printflags(const struct xlat *x, unsigned int flags, const char *dflt)
746 return printflags64(x, flags, dflt);
750 printflags_long(const struct xlat *x, unsigned long flags, const char *dflt)
752 return printflags64(x, flags, dflt);
756 printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
758 printxvals(val, dflt, x, NULL);
762 printxval(const struct xlat *x, const unsigned int val, const char *dflt)
764 printxvals(val, dflt, x, NULL);
768 printxval_long(const struct xlat *x, const unsigned long val, const char *dflt)
770 printxvals(val, dflt, x, NULL);
773 /* Strace log generation machinery.
775 * printing_tcp: tcb which has incomplete line being printed right now.
776 * NULL if last line has been completed ('\n'-terminated).
777 * printleader(tcp) examines it, finishes incomplete line if needed,
778 * the sets it to tcp.
779 * line_ended() clears printing_tcp and resets ->curcol = 0.
780 * tcp->curcol == 0 check is also used to detect completeness
781 * of last line, since in -ff mode just checking printing_tcp for NULL
784 * If you change this code, test log generation in both -f and -ff modes
786 * strace -oLOG -f[f] test/threaded_execve
787 * strace -oLOG -f[f] test/sigkill_rain
788 * strace -oLOG -f[f] -p "`pidof web_browser`"
790 extern struct tcb *printing_tcp;
791 extern void printleader(struct tcb *);
792 extern void line_ended(void);
793 extern void tabto(void);
794 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
795 extern void tprints(const char *str);
797 #if SUPPORTED_PERSONALITIES > 1
798 extern void set_personality(int personality);
799 extern unsigned current_personality;
801 # define set_personality(personality) ((void)0)
802 # define current_personality 0
805 #if SUPPORTED_PERSONALITIES == 1
806 # define current_wordsize PERSONALITY0_WORDSIZE
808 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
809 # define current_wordsize PERSONALITY0_WORDSIZE
811 extern unsigned current_wordsize;
815 /* In many, many places we play fast and loose and use
816 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
817 * We probably need to use widen_to_long() instead:
819 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
820 # define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
822 # define widen_to_long(v) ((long)(v))
826 * Widen without sign-extension a signed integer type to unsigned long long.
828 #define widen_to_ull(v) \
829 (sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
830 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
831 (unsigned long long) (v))
833 extern const struct_sysent sysent0[];
834 extern const char *const errnoent0[];
835 extern const char *const signalent0[];
836 extern const struct_ioctlent ioctlent0[];
837 extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
838 #define qual_flags (qual_vec[current_personality])
840 #if SUPPORTED_PERSONALITIES > 1
841 extern const struct_sysent *sysent;
842 extern const char *const *errnoent;
843 extern const char *const *signalent;
844 extern const struct_ioctlent *ioctlent;
846 # define sysent sysent0
847 # define errnoent errnoent0
848 # define signalent signalent0
849 # define ioctlent ioctlent0
852 extern unsigned nsyscalls;
853 extern unsigned nerrnos;
854 extern unsigned nsignals;
855 extern unsigned nioctlents;
856 extern unsigned num_quals;
858 #ifdef IN_MPERS_BOOTSTRAP
859 /* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
860 # define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
861 #else /* !IN_MPERS_BOOTSTRAP */
862 # if SUPPORTED_PERSONALITIES > 1
863 # include "printers.h"
865 # include "native_printer_decls.h"
867 # define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
868 #endif /* !IN_MPERS_BOOTSTRAP */
871 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
873 #define SCNO_IS_VALID(scno) \
874 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
876 /* Only ensures that sysent[scno] isn't out of range */
877 #define SCNO_IN_RANGE(scno) \
878 ((unsigned long)(scno) < nsyscalls)
880 #define MPERS_FUNC_NAME__(prefix, name) prefix ## name
881 #define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
882 #define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
884 #define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
886 #define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
889 * The kernel used to define 64-bit types on 64-bit systems on a per-arch
890 * basis. Some architectures would use unsigned long and others would use
891 * unsigned long long. These types were exported as part of the
892 * kernel-userspace ABI and now must be maintained forever. This matches
893 * what the kernel exports for each architecture so we don't need to cast
894 * every printing of __u64 or __s64 to stdint types.
897 # define PRI__64 "ll"
898 #elif defined ALPHA || defined IA64 || defined MIPS || defined POWERPC
901 # define PRI__64 "ll"
904 #define PRI__d64 PRI__64"d"
905 #define PRI__u64 PRI__64"u"
906 #define PRI__x64 PRI__64"x"
908 #endif /* !STRACE_DEFS_H */