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 msg_flags[];
382 extern const struct xlat open_access_modes[];
383 extern const struct xlat open_mode_flags[];
384 extern const struct xlat resource_flags[];
385 extern const struct xlat socketlayers[];
386 extern const struct xlat whence_codes[];
388 /* Format of syscall return values */
389 #define RVAL_DECIMAL 000 /* decimal format */
390 #define RVAL_HEX 001 /* hex format */
391 #define RVAL_OCTAL 002 /* octal format */
392 #define RVAL_UDECIMAL 003 /* unsigned decimal format */
393 #if HAVE_STRUCT_TCB_EXT_ARG
394 # if 0 /* unused so far */
395 # define RVAL_LDECIMAL 004 /* long decimal format */
396 # define RVAL_LHEX 005 /* long hex format */
397 # define RVAL_LOCTAL 006 /* long octal format */
399 # define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
400 #endif /* HAVE_STRUCT_TCB_EXT_ARG */
401 #define RVAL_FD 010 /* file descriptor */
402 #define RVAL_MASK 017 /* mask for these values */
404 #define RVAL_STR 020 /* Print `auxstr' field after return val */
405 #define RVAL_NONE 040 /* Print nothing */
407 #define RVAL_DECODED 0100 /* syscall decoding finished */
409 #define TRACE_FILE 001 /* Trace file-related syscalls. */
410 #define TRACE_IPC 002 /* Trace IPC-related syscalls. */
411 #define TRACE_NETWORK 004 /* Trace network-related syscalls. */
412 #define TRACE_PROCESS 010 /* Trace process-related syscalls. */
413 #define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
414 #define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
415 #define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
416 #define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
417 #define STACKTRACE_INVALIDATE_CACHE 0400 /* Trigger proc/maps cache updating */
418 #define STACKTRACE_CAPTURE_ON_ENTER 01000 /* Capture stacktrace on "entering" stage */
419 #define TRACE_INDIRECT_SUBCALL 02000 /* Syscall is an indirect socket/ipc subcall. */
421 #define IOCTL_NUMBER_UNKNOWN 0
422 #define IOCTL_NUMBER_HANDLED 1
423 #define IOCTL_NUMBER_STOP_LOOKUP 010
425 #define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL)
427 #if defined(ARM) || defined(AARCH64) \
428 || defined(I386) || defined(X32) || defined(X86_64) \
432 || defined(MICROBLAZE) \
434 || defined(SH) || defined(SH64) \
435 || defined(SPARC) || defined(SPARC64) \
437 # define NEED_UID16_PARSERS 1
439 # define NEED_UID16_PARSERS 0
451 extern enum sock_proto get_proto_by_name(const char *);
464 extern cflag_t cflag;
465 extern bool debug_flag;
468 extern bool count_wallclock;
469 extern unsigned int qflag;
470 extern bool not_failing_only;
471 extern unsigned int show_fd_path;
472 extern bool hide_log_until_execve;
473 /* are we filtering traces based on paths? */
474 extern const char **paths_selected;
475 #define tracing_paths (paths_selected != NULL)
476 extern unsigned xflag;
477 extern unsigned followfork;
479 /* if this is true do the stack trace for every system call */
480 extern bool stack_trace_enabled;
482 extern unsigned ptrace_setoptions;
483 extern unsigned max_strlen;
484 extern unsigned os_release;
485 #undef KERNEL_VERSION
486 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
488 void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
489 void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
490 void error_msg_and_die(const char *fmt, ...)
491 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
492 void error_msg_and_help(const char *fmt, ...)
493 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
494 void perror_msg_and_die(const char *fmt, ...)
495 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
496 void die_out_of_memory(void) ATTRIBUTE_NORETURN;
498 void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
499 void *xcalloc(size_t nmemb, size_t size)
500 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2));
501 void *xreallocarray(void *ptr, size_t nmemb, size_t size)
502 ATTRIBUTE_ALLOC_SIZE((2, 3));
503 char *xstrdup(const char *str) ATTRIBUTE_MALLOC;
505 #if USE_CUSTOM_PRINTF
507 * See comment in vsprintf.c for allowed formats.
508 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
510 int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
512 # define strace_vfprintf vfprintf
515 extern int read_int_from_file(const char *, int *);
517 extern void set_sortby(const char *);
518 extern void set_overhead(int);
519 extern void qualify(const char *);
520 extern void print_pc(struct tcb *);
521 extern int trace_syscall(struct tcb *);
522 extern void count_syscall(struct tcb *, const struct timeval *);
523 extern void call_summary(FILE *);
525 extern void clear_regs(void);
526 extern void get_regs(pid_t pid);
527 extern int get_scno(struct tcb *tcp);
528 extern const char *syscall_name(long scno);
530 extern bool is_erestart(struct tcb *);
531 extern void temporarily_clear_syserror(struct tcb *);
532 extern void restore_cleared_syserror(struct tcb *);
534 extern int umoven(struct tcb *, long, unsigned int, void *);
535 #define umove(pid, addr, objp) \
536 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
537 extern int umoven_or_printaddr(struct tcb *, long, unsigned int, void *);
538 #define umove_or_printaddr(pid, addr, objp) \
539 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
540 extern int umovestr(struct tcb *, long, unsigned int, char *);
541 extern int upeek(int pid, long, long *);
544 print_array(struct tcb *tcp,
545 const unsigned long start_addr,
547 void *const elem_buf,
548 const size_t elem_size,
549 int (*const umoven_func)(struct tcb *,
553 bool (*const print_func)(struct tcb *,
557 void *const opaque_data);
559 #if defined ALPHA || defined IA64 || defined MIPS \
560 || defined SH || defined SPARC || defined SPARC64
561 # define HAVE_GETRVAL2
562 extern long getrval2(struct tcb *);
564 # undef HAVE_GETRVAL2
567 extern const char *signame(const int);
568 extern void pathtrace_select(const char *);
569 extern int pathtrace_match(struct tcb *);
570 extern int getfdpath(struct tcb *, int, char *, unsigned);
571 extern enum sock_proto getfdproto(struct tcb *, int);
573 extern const char *xlookup(const struct xlat *, const uint64_t);
574 extern const char *xlat_search(const struct xlat *, const size_t, const uint64_t);
576 extern unsigned long get_pagesize(void);
577 extern int string_to_uint(const char *str);
578 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
580 #define QUOTE_0_TERMINATED 0x01
581 #define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
583 extern int string_quote(const char *, char *, unsigned int, unsigned int);
584 extern int print_quoted_string(const char *, unsigned int, unsigned int);
586 /* a refers to the lower numbered u_arg,
587 * b refers to the higher numbered u_arg
589 #ifdef WORDS_BIGENDIAN
590 # define LONG_LONG(a,b) \
591 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
593 # define LONG_LONG(a,b) \
594 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
596 extern int getllval(struct tcb *, unsigned long long *, int);
597 extern int printllval(struct tcb *, const char *, int)
598 ATTRIBUTE_FORMAT((printf, 2, 0));
600 extern void printaddr(long);
601 extern void printxvals(const uint64_t, const char *, const struct xlat *, ...)
603 extern int printargs(struct tcb *);
604 extern int printargs_u(struct tcb *);
605 extern int printargs_d(struct tcb *);
607 extern void addflags(const struct xlat *, uint64_t);
608 extern int printflags64(const struct xlat *, uint64_t, const char *);
609 extern const char *sprintflags(const char *, const struct xlat *, uint64_t);
610 extern const char *sprintmode(unsigned int);
611 extern const char *sprinttime(time_t);
612 extern bool fetch_msghdr_namelen(struct tcb *, long, int *);
613 extern void decode_msghdr(struct tcb *, const int *, long, unsigned long);
614 extern void dumpiov_in_msghdr(struct tcb *, long, unsigned long);
615 extern void dumpiov_in_mmsghdr(struct tcb *, long);
616 extern void dumpiov_upto(struct tcb *, int, long, unsigned long);
617 #define dumpiov(tcp, len, addr) \
618 dumpiov_upto((tcp), (len), (addr), (unsigned long) -1L)
619 extern void dumpstr(struct tcb *, long, int);
620 extern void printstr(struct tcb *, long, long);
621 extern bool printnum_short(struct tcb *, long, const char *)
622 ATTRIBUTE_FORMAT((printf, 3, 0));
623 extern bool printnum_int(struct tcb *, long, const char *)
624 ATTRIBUTE_FORMAT((printf, 3, 0));
625 extern bool printnum_int64(struct tcb *, long, const char *)
626 ATTRIBUTE_FORMAT((printf, 3, 0));
628 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
629 extern bool printnum_long_int(struct tcb *, long, const char *, const char *)
630 ATTRIBUTE_FORMAT((printf, 3, 0))
631 ATTRIBUTE_FORMAT((printf, 4, 0));
632 # define printnum_slong(tcp, addr) \
633 printnum_long_int((tcp), (addr), "%" PRId64, "%d")
634 # define printnum_ulong(tcp, addr) \
635 printnum_long_int((tcp), (addr), "%" PRIu64, "%u")
636 # define printnum_ptr(tcp, addr) \
637 printnum_long_int((tcp), (addr), "%#" PRIx64, "%#x")
638 #elif SIZEOF_LONG > 4
639 # define printnum_slong(tcp, addr) \
640 printnum_int64((tcp), (addr), "%" PRId64)
641 # define printnum_ulong(tcp, addr) \
642 printnum_int64((tcp), (addr), "%" PRIu64)
643 # define printnum_ptr(tcp, addr) \
644 printnum_int64((tcp), (addr), "%#" PRIx64)
646 # define printnum_slong(tcp, addr) \
647 printnum_int((tcp), (addr), "%d")
648 # define printnum_ulong(tcp, addr) \
649 printnum_int((tcp), (addr), "%u")
650 # define printnum_ptr(tcp, addr) \
651 printnum_int((tcp), (addr), "%#x")
654 extern bool printpair_int(struct tcb *, long, const char *)
655 ATTRIBUTE_FORMAT((printf, 3, 0));
656 extern bool printpair_int64(struct tcb *, long, const char *)
657 ATTRIBUTE_FORMAT((printf, 3, 0));
658 extern void printpath(struct tcb *, long);
659 extern void printpathn(struct tcb *, long, unsigned int);
660 #define TIMESPEC_TEXT_BUFSIZE \
661 (sizeof(intmax_t)*3 * 2 + sizeof("{tv_sec=%jd, tv_nsec=%jd}"))
662 extern void printfd(struct tcb *, int);
663 extern void print_sockaddr(struct tcb *tcp, const void *, int);
664 extern bool print_sockaddr_by_inode(const unsigned long, const enum sock_proto);
665 extern bool print_sockaddr_by_inode_cached(const unsigned long);
666 extern void print_dirfd(struct tcb *, int);
667 extern int decode_sockaddr(struct tcb *, long, int);
669 extern void printrusage32(struct tcb *, long);
670 extern const char *sprint_timeval32(struct tcb *tcp, long);
671 extern void print_timeval32(struct tcb *tcp, long);
672 extern void print_timeval32_pair(struct tcb *tcp, long);
673 extern void print_itimerval32(struct tcb *tcp, long);
675 extern void printuid(const char *, const unsigned int);
676 extern void print_sigset_addr_len(struct tcb *, long, long);
677 extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
678 #define tprintsigmask_addr(prefix, mask) \
679 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
680 extern void printsignal(int);
681 extern void tprint_iov(struct tcb *, unsigned long, unsigned long, enum iov_decode);
682 extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long,
683 enum iov_decode, unsigned long);
684 extern void decode_netlink(struct tcb *, unsigned long, unsigned long);
685 extern void tprint_open_modes(unsigned int);
686 extern const char *sprint_open_modes(unsigned int);
687 extern void print_seccomp_filter(struct tcb *, unsigned long);
688 extern void print_seccomp_fprog(struct tcb *, unsigned long, unsigned short);
690 struct strace_statfs;
691 extern void print_struct_statfs(struct tcb *tcp, long);
692 extern void print_struct_statfs64(struct tcb *tcp, long, unsigned long);
694 extern void print_ifindex(unsigned int);
696 extern int file_ioctl(struct tcb *, const unsigned int, long);
697 extern int fs_x_ioctl(struct tcb *, const unsigned int, long);
698 extern int loop_ioctl(struct tcb *, const unsigned int, long);
699 extern int ptp_ioctl(struct tcb *, const unsigned int, long);
700 extern int scsi_ioctl(struct tcb *, const unsigned int, long);
701 extern int sock_ioctl(struct tcb *, const unsigned int, long);
702 extern int term_ioctl(struct tcb *, const unsigned int, long);
703 extern int ubi_ioctl(struct tcb *, const unsigned int, long);
704 extern int uffdio_ioctl(struct tcb *, const unsigned int, long);
706 extern int tv_nz(const struct timeval *);
707 extern int tv_cmp(const struct timeval *, const struct timeval *);
708 extern double tv_float(const struct timeval *);
709 extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *);
710 extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *);
711 extern void tv_mul(struct timeval *, const struct timeval *, int);
712 extern void tv_div(struct timeval *, const struct timeval *, int);
715 extern void unwind_init(void);
716 extern void unwind_tcb_init(struct tcb *tcp);
717 extern void unwind_tcb_fin(struct tcb *tcp);
718 extern void unwind_cache_invalidate(struct tcb* tcp);
719 extern void unwind_print_stacktrace(struct tcb* tcp);
720 extern void unwind_capture_stacktrace(struct tcb* tcp);
724 printflags(const struct xlat *x, unsigned int flags, const char *dflt)
726 return printflags64(x, flags, dflt);
730 printflags_long(const struct xlat *x, unsigned long flags, const char *dflt)
732 return printflags64(x, flags, dflt);
736 printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
738 printxvals(val, dflt, x, NULL);
742 printxval(const struct xlat *x, const unsigned int val, const char *dflt)
744 printxvals(val, dflt, x, NULL);
748 printxval_long(const struct xlat *x, const unsigned long val, const char *dflt)
750 printxvals(val, dflt, x, NULL);
753 /* Strace log generation machinery.
755 * printing_tcp: tcb which has incomplete line being printed right now.
756 * NULL if last line has been completed ('\n'-terminated).
757 * printleader(tcp) examines it, finishes incomplete line if needed,
758 * the sets it to tcp.
759 * line_ended() clears printing_tcp and resets ->curcol = 0.
760 * tcp->curcol == 0 check is also used to detect completeness
761 * of last line, since in -ff mode just checking printing_tcp for NULL
764 * If you change this code, test log generation in both -f and -ff modes
766 * strace -oLOG -f[f] test/threaded_execve
767 * strace -oLOG -f[f] test/sigkill_rain
768 * strace -oLOG -f[f] -p "`pidof web_browser`"
770 extern struct tcb *printing_tcp;
771 extern void printleader(struct tcb *);
772 extern void line_ended(void);
773 extern void tabto(void);
774 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
775 extern void tprints(const char *str);
777 #if SUPPORTED_PERSONALITIES > 1
778 extern void set_personality(int personality);
779 extern unsigned current_personality;
781 # define set_personality(personality) ((void)0)
782 # define current_personality 0
785 #if SUPPORTED_PERSONALITIES == 1
786 # define current_wordsize PERSONALITY0_WORDSIZE
788 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
789 # define current_wordsize PERSONALITY0_WORDSIZE
791 extern unsigned current_wordsize;
795 /* In many, many places we play fast and loose and use
796 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
797 * We probably need to use widen_to_long() instead:
799 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
800 # define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
802 # define widen_to_long(v) ((long)(v))
806 * Widen without sign-extension a signed integer type to unsigned long long.
808 #define widen_to_ull(v) \
809 (sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
810 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
811 (unsigned long long) (v))
813 extern const struct_sysent sysent0[];
814 extern const char *const errnoent0[];
815 extern const char *const signalent0[];
816 extern const struct_ioctlent ioctlent0[];
817 extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
818 #define qual_flags (qual_vec[current_personality])
820 #if SUPPORTED_PERSONALITIES > 1
821 extern const struct_sysent *sysent;
822 extern const char *const *errnoent;
823 extern const char *const *signalent;
824 extern const struct_ioctlent *ioctlent;
826 # define sysent sysent0
827 # define errnoent errnoent0
828 # define signalent signalent0
829 # define ioctlent ioctlent0
832 extern unsigned nsyscalls;
833 extern unsigned nerrnos;
834 extern unsigned nsignals;
835 extern unsigned nioctlents;
836 extern unsigned num_quals;
838 #ifdef IN_MPERS_BOOTSTRAP
839 /* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
840 # define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
841 #else /* !IN_MPERS_BOOTSTRAP */
842 # if SUPPORTED_PERSONALITIES > 1
843 # include "printers.h"
845 # include "native_printer_decls.h"
847 # define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
848 #endif /* !IN_MPERS_BOOTSTRAP */
851 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
853 #define SCNO_IS_VALID(scno) \
854 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
856 /* Only ensures that sysent[scno] isn't out of range */
857 #define SCNO_IN_RANGE(scno) \
858 ((unsigned long)(scno) < nsyscalls)
860 #define MPERS_FUNC_NAME__(prefix, name) prefix ## name
861 #define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
862 #define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
864 #define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
866 #define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
869 * The kernel used to define 64-bit types on 64-bit systems on a per-arch
870 * basis. Some architectures would use unsigned long and others would use
871 * unsigned long long. These types were exported as part of the
872 * kernel-userspace ABI and now must be maintained forever. This matches
873 * what the kernel exports for each architecture so we don't need to cast
874 * every printing of __u64 or __s64 to stdint types.
877 # define PRI__64 "ll"
878 #elif defined ALPHA || defined IA64 || defined MIPS || defined POWERPC
881 # define PRI__64 "ll"
884 #define PRI__d64 PRI__64"d"
885 #define PRI__u64 PRI__64"u"
886 #define PRI__x64 PRI__64"x"