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.
44 #ifdef _LARGEFILE64_SOURCE
45 /* This is the macro everything checks before using foo64 names. */
46 # ifndef _LFS64_LARGEFILE
47 # define _LFS64_LARGEFILE 1
51 /* Configuration section */
53 #if defined(LINUX) && defined(MIPS)
54 #define MAX_QUALS 7000 /* maximum number of syscalls, signals, etc. */
56 #define MAX_QUALS 2048 /* maximum number of syscalls, signals, etc. */
59 #ifndef DEFAULT_STRLEN
60 /* default maximum # of bytes printed in `printstr', change with -s switch */
61 #define DEFAULT_STRLEN 32
63 #ifndef DEFAULT_ACOLUMN
64 #define DEFAULT_ACOLUMN 40 /* default alignment column for results */
67 /* Maximum number of args to a syscall.
69 * Make sure that all entries in all syscallent.h files
70 * have nargs <= MAX_ARGS!
71 * linux/<ARCH>/syscallent.h: all have nargs <= 6.
72 * freebsd/i386/syscallent.h: one syscall with nargs = 8
73 * (sys_sendfile, looks legitimate)
74 * and one with nargs = 7 (sys_mmap, maybe it should have 6?).
75 * sunos4/syscallent.h: all are <= 6.
76 * svr4/syscallent.h: all are MA (MAX_ARGS), it's unclear what the real max is.
83 # elif defined X86_64 || defined I386
90 /* Way too big. Switch your arch to saner size after you tested that it works */
95 #ifndef DEFAULT_SORTBY
96 #define DEFAULT_SORTBY "time" /* default sorting method for call profiling */
99 #include <sys/types.h>
106 #include <sys/time.h>
109 #ifdef HAVE_STDBOOL_H
115 #endif /* STDC_HEADERS */
117 #ifdef HAVE_SIGINFO_T
122 # if defined(SPARC) || defined(SPARC64)
126 # define LINUX_X86_64
128 # if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI32
129 # define LINUX_MIPSO32
131 # if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_NABI32
132 # define LINUX_MIPSN32
133 # define LINUX_MIPS64
135 # if defined(MIPS) && _MIPS_SIM == _MIPS_SIM_ABI64
136 # define LINUX_MIPSN64
137 # define LINUX_MIPS64
147 #if defined(SVR4) || defined(FREEBSD)
155 #error "FreeBSD support is only for i386 arch right now."
157 #include <machine/psl.h>
158 #include <machine/reg.h>
159 #include <sys/syscall.h>
163 # include <sys/procfs.h>
164 # ifdef HAVE_MP_PROCFS
165 # include <sys/uio.h>
168 # include <sys/pioctl.h>
170 #else /* !USE_PROCFS */
171 # if (defined(LINUXSPARC) || defined(LINUX_X86_64) || defined(LINUX_ARM) || defined(LINUX_AVR32)) && defined(__GLIBC__)
172 # include <sys/ptrace.h>
174 /* Work around awkward prototype in ptrace.h. */
175 # define ptrace xptrace
176 # include <sys/ptrace.h>
180 # include <asm/ptrace.h>
184 extern long ptrace(int, int, char *, long);
186 extern int ptrace(int, int, char *, int, ...);
189 #endif /* !USE_PROCFS */
192 #if !defined(__GLIBC__)
193 #define PTRACE_PEEKUSER PTRACE_PEEKUSR
194 #define PTRACE_POKEUSER PTRACE_POKEUSR
196 #if defined(X86_64) || defined(I386)
197 /* For struct pt_regs. x86 strace uses PTRACE_GETREGS.
198 * PTRACE_GETREGS returns registers in the layout of this struct.
200 # include <asm/ptrace.h>
217 # define PT_GR20 (20*4)
218 # define PT_GR26 (26*4)
219 # define PT_GR28 (28*4)
220 # define PT_IAOQ0 (106*4)
221 # define PT_IAOQ1 (107*4)
224 /* SH64 Linux - this code assumes the following kernel API for system calls:
226 System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
227 where n = no. of parameters.
228 Other regs Offset 24+
230 On entry: R2-7 = parameters 1-6 (as many as necessary)
231 On return: R9 = result. */
233 /* Offset for peeks of registers */
234 # define REG_OFFSET (24)
235 # define REG_GENERAL(x) (8*(x)+REG_OFFSET)
236 # define REG_PC (0*8)
237 # define REG_SYSCALL (2*8)
241 #define SUPPORTED_PERSONALITIES 1
242 #define DEFAULT_PERSONALITY 0
245 /* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
246 * by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
250 #define PERSONALITY0_WORDSIZE 4
251 #define PERSONALITY1_WORDSIZE 4
252 #undef SUPPORTED_PERSONALITIES
254 #include <asm/psrcompat.h>
255 #define SUPPORTED_PERSONALITIES 3
256 #define PERSONALITY2_WORDSIZE 8
259 #define SUPPORTED_PERSONALITIES 2
261 #endif /* LINUXSPARC */
264 #undef SUPPORTED_PERSONALITIES
265 #define SUPPORTED_PERSONALITIES 2
266 #define PERSONALITY0_WORDSIZE 8
267 #define PERSONALITY1_WORDSIZE 4
271 #undef SUPPORTED_PERSONALITIES
272 #define SUPPORTED_PERSONALITIES 2
273 #define PERSONALITY0_WORDSIZE 4
274 #define PERSONALITY1_WORDSIZE 4
278 #undef SUPPORTED_PERSONALITIES
279 #define SUPPORTED_PERSONALITIES 2
280 #define PERSONALITY0_WORDSIZE 8
281 #define PERSONALITY1_WORDSIZE 4
285 #ifdef HAVE_MP_PROCFS
286 extern int mp_ioctl(int f, int c, void *a, int s);
287 #define IOCTL(f,c,a) mp_ioctl(f, c, a, sizeof *a)
288 #define IOCTL_STATUS(t) \
289 pread(t->pfd_stat, &t->status, sizeof t->status, 0)
290 #define IOCTL_WSTOP(t) \
291 (IOCTL(t->pfd, PCWSTOP, (char *)NULL) < 0 ? -1 : IOCTL_STATUS(t))
292 #define PR_WHY pr_lwp.pr_why
293 #define PR_WHAT pr_lwp.pr_what
294 #define PR_REG pr_lwp.pr_context.uc_mcontext.gregs
295 #define PR_FLAGS pr_lwp.pr_flags
296 #define PR_SYSCALL pr_lwp.pr_syscall
297 #define PR_INFO pr_lwp.pr_info
298 #define PIOCSTIP PCSTOP
299 #define PIOCSET PCSET
300 #define PIOCRESET PCRESET
301 #define PIOCSTRACE PCSTRACE
302 #define PIOCSFAULT PCSFAULT
303 #define PIOCWSTOP PCWSTOP
304 #define PIOCSTOP PCSTOP
305 #define PIOCSENTRY PCSENTRY
306 #define PIOCSEXIT PCSEXIT
307 #define PIOCRUN PCRUN
310 #define IOCTL_STATUS(t) ioctl(t->pfd, PIOCSTATUS, &t->status)
311 #define IOCTL_WSTOP(t) ioctl(t->pfd, PIOCWSTOP, &t->status)
312 #define PR_WHY pr_why
313 #define PR_WHAT pr_what
314 #define PR_REG pr_reg
315 #define PR_FLAGS pr_flags
316 #define PR_SYSCALL pr_syscall
317 #define PR_INFO pr_info
322 #define IOCTL_STATUS(t) ioctl(t->pfd, PIOCSTATUS, &t->status)
323 #define IOCTL_WSTOP(t) ioctl(t->pfd, PIOCWAIT, &t->status)
324 #define PIOCRUN PIOCCONT
325 #define PIOCWSTOP PIOCWAIT
328 #define PR_FLAGS state
329 /* from /usr/src/sys/miscfs/procfs/procfs_vnops.c,
330 status.state = 0 for running, 1 for stopped */
332 #define PR_SYSENTRY S_SCE
333 #define PR_SYSEXIT S_SCX
334 #define PR_SIGNALLED S_SIG
335 #define PR_FAULTED S_CORE
339 # if !HAVE_DECL_PTRACE_SETOPTIONS
340 # define PTRACE_SETOPTIONS 0x4200
342 # if !HAVE_DECL_PTRACE_GETEVENTMSG
343 # define PTRACE_GETEVENTMSG 0x4201
345 # if !HAVE_DECL_PTRACE_GETSIGINFO
346 # define PTRACE_GETSIGINFO 0x4202
349 # if !HAVE_DECL_PTRACE_O_TRACESYSGOOD
350 # define PTRACE_O_TRACESYSGOOD 0x00000001
352 # if !HAVE_DECL_PTRACE_O_TRACEFORK
353 # define PTRACE_O_TRACEFORK 0x00000002
355 # if !HAVE_DECL_PTRACE_O_TRACEVFORK
356 # define PTRACE_O_TRACEVFORK 0x00000004
358 # if !HAVE_DECL_PTRACE_O_TRACECLONE
359 # define PTRACE_O_TRACECLONE 0x00000008
361 # if !HAVE_DECL_PTRACE_O_TRACEEXEC
362 # define PTRACE_O_TRACEEXEC 0x00000010
364 # if !HAVE_DECL_PTRACE_O_TRACEEXIT
365 # define PTRACE_O_TRACEEXIT 0x00000040
368 # if !HAVE_DECL_PTRACE_EVENT_FORK
369 # define PTRACE_EVENT_FORK 1
371 # if !HAVE_DECL_PTRACE_EVENT_VFORK
372 # define PTRACE_EVENT_VFORK 2
374 # if !HAVE_DECL_PTRACE_EVENT_CLONE
375 # define PTRACE_EVENT_CLONE 3
377 # if !HAVE_DECL_PTRACE_EVENT_EXEC
378 # define PTRACE_EVENT_EXEC 4
380 # if !HAVE_DECL_PTRACE_EVENT_VFORK_DONE
381 # define PTRACE_EVENT_VFORK_DONE 5
383 # if !HAVE_DECL_PTRACE_EVENT_EXIT
384 # define PTRACE_EVENT_EXIT 6
388 #if !defined __GNUC__
389 # define __attribute__(x) /*nothing*/
392 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
394 /* Trace Control Block */
396 int flags; /* See below for TCB_ values */
397 int pid; /* Process Id of this entry */
398 int u_nargs; /* System call argument count */
399 int u_error; /* Error code */
400 long scno; /* System call number */
401 long u_arg[MAX_ARGS]; /* System call arguments */
402 #if defined (LINUX_MIPSN32)
403 long long ext_arg[MAX_ARGS]; /* System call arguments */
405 long u_rval; /* (first) return value */
406 #ifdef HAVE_LONG_LONG
407 long long u_lrval; /* long long return value */
410 int curcol; /* Output column for this process */
411 FILE *outf; /* Output file for this process */
412 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
413 struct timeval stime; /* System time usage as of last process wait */
414 struct timeval dtime; /* Delta for system time usage */
415 struct timeval etime; /* Syscall entry time */
416 /* Support for tracing forked processes */
417 long baddr; /* `Breakpoint' address */
418 long inst[2]; /* Instructions on above */
420 int pfd; /* proc file descriptor */
423 # ifdef HAVE_MP_PROCFS
428 prstatus_t status; /* procfs status structure */
432 struct procfs_status status;
439 #define TCB_STARTUP 00001 /* We have just begun ptracing this process */
440 #define TCB_INUSE 00002 /* This table entry is in use */
442 * Are we in system call entry or in syscall exit?
444 * This bit is set after all syscall entry processing is done.
445 * Therefore, this bit will be set when next ptrace stop occurs,
446 * which should be syscall exit stop. Other stops which are possible
447 * directly after syscall entry (death, ptrace event stop)
448 * are simpler and handled without calling trace_syscall(), therefore
449 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
450 * are limited to trace(), this condition is never observed in trace_syscall()
452 * The bit is cleared after all syscall exit processing is done.
453 * User-generated SIGTRAPs and post-execve SIGTRAP make it necessary
454 * to be very careful and NOT set TCB_INSYSCALL bit when they are encountered.
455 * TCB_WAITEXECVE bit is used for this purpose (see below).
457 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
459 #define TCB_INSYSCALL 00004
460 #define TCB_ATTACHED 00010 /* Process is not our own child */
461 #define TCB_BPTSET 00100 /* "Breakpoint" set after fork(2) */
462 #define TCB_SIGTRAPPED 00200 /* Process wanted to block SIGTRAP */
463 #define TCB_REPRINT 01000 /* We should reprint this syscall on exit */
464 #define TCB_FILTERED 02000 /* This system call has been filtered out */
466 /* x86 does not need TCB_WAITEXECVE.
467 * It can detect SIGTRAP by looking at eax/rax.
468 * See "not a syscall entry (eax = %ld)\n" message
469 * in syscall_fixup_on_sysenter().
471 # if defined(ALPHA) || defined(AVR32) || defined(SPARC) || defined(SPARC64) \
472 || defined(POWERPC) || defined(IA64) || defined(HPPA) \
473 || defined(SH) || defined(SH64) || defined(S390) || defined(S390X) \
474 || defined(ARM) || defined(MIPS) || defined(BFIN) || defined(TILE)
475 /* This tracee has entered into execve syscall. Expect post-execve SIGTRAP
476 * to happen. (When it is detected, tracee is continued and this bit is cleared.)
478 # define TCB_WAITEXECVE 04000
480 # include <sys/syscall.h>
481 # ifndef __NR_exit_group
482 # /* Hack: Most headers around are too old to have __NR_exit_group. */
484 # define __NR_exit_group 405
486 # define __NR_exit_group 252
487 # elif defined X86_64
488 # define __NR_exit_group 231
490 # define __NR_exit_group 1236
491 # elif defined POWERPC
492 # define __NR_exit_group 234
493 # elif defined S390 || defined S390X
494 # define __NR_exit_group 248
495 # elif defined SPARC || defined SPARC64
496 # define __NR_exit_group 188
498 # define __NR_exit_group 247
499 # endif /* ALPHA et al */
500 # endif /* !__NR_exit_group */
503 /* qualifier flags */
504 #define QUAL_TRACE 0001 /* this system call should be traced */
505 #define QUAL_ABBREV 0002 /* abbreviate the structures of this syscall */
506 #define QUAL_VERBOSE 0004 /* decode the structures of this syscall */
507 #define QUAL_RAW 0010 /* print all args in hex for this syscall */
508 #define QUAL_SIGNAL 0020 /* report events with this signal */
509 #define QUAL_FAULT 0040 /* report events with this fault */
510 #define QUAL_READ 0100 /* dump data read on this file descriptor */
511 #define QUAL_WRITE 0200 /* dump data written to this file descriptor */
513 #define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
514 #define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
515 #define syserror(tcp) ((tcp)->u_error != 0)
516 #define verbose(tcp) (qual_flags[(tcp)->scno] & QUAL_VERBOSE)
517 #define abbrev(tcp) (qual_flags[(tcp)->scno] & QUAL_ABBREV)
518 #define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
525 extern const struct xlat open_mode_flags[];
526 extern const struct xlat addrfams[];
527 extern const struct xlat struct_user_offsets[];
528 extern const struct xlat open_access_modes[];
530 /* Format of syscall return values */
531 #define RVAL_DECIMAL 000 /* decimal format */
532 #define RVAL_HEX 001 /* hex format */
533 #define RVAL_OCTAL 002 /* octal format */
534 #define RVAL_UDECIMAL 003 /* unsigned decimal format */
535 #define RVAL_LDECIMAL 004 /* long decimal format */
536 #define RVAL_LHEX 005 /* long hex format */
537 #define RVAL_LOCTAL 006 /* long octal format */
538 #define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
539 #define RVAL_MASK 007 /* mask for these values */
541 #define RVAL_STR 010 /* Print `auxstr' field after return val */
542 #define RVAL_NONE 020 /* Print nothing */
545 #define offsetof(type, member) (((char *) &(((type *) NULL)->member)) - \
546 ((char *) (type *) NULL))
547 #endif /* !offsetof */
549 /* get offset of member within a user struct */
550 #define uoff(member) offsetof(struct user, member)
552 #define TRACE_FILE 001 /* Trace file-related syscalls. */
553 #define TRACE_IPC 002 /* Trace IPC-related syscalls. */
554 #define TRACE_NETWORK 004 /* Trace network-related syscalls. */
555 #define TRACE_PROCESS 010 /* Trace process-related syscalls. */
556 #define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
557 #define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
558 #define SYSCALL_NEVER_FAILS 0100 /* Syscall is always successful. */
566 extern int *qual_flags;
567 extern int debug, followfork;
568 extern unsigned int ptrace_setoptions;
569 extern int dtime, xflag, qflag;
570 extern cflag_t cflag;
571 extern int max_strlen;
572 extern struct tcb *tcp_last;
574 enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
576 void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
577 void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
578 void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
579 void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
580 void die_out_of_memory(void) __attribute__ ((noreturn));
582 extern void set_personality(int personality);
583 extern const char *xlookup(const struct xlat *, int);
584 extern struct tcb *alloc_tcb(int, int);
585 extern struct tcb *pid2tcb(int);
586 extern void droptcb(struct tcb *);
588 #define alloctcb(pid) alloc_tcb((pid), 1)
590 extern void set_sortby(const char *);
591 extern void set_overhead(int);
592 extern void qualify(const char *);
594 extern int get_scno(struct tcb *);
596 extern long known_scno(struct tcb *);
597 extern long do_ptrace(int request, struct tcb *tcp, void *addr, void *data);
598 extern int ptrace_restart(int request, struct tcb *tcp, int sig);
599 extern int trace_syscall(struct tcb *);
600 extern void count_syscall(struct tcb *, struct timeval *);
601 extern void printxval(const struct xlat *, int, const char *);
602 extern int printargs(struct tcb *);
603 extern void addflags(const struct xlat *, int);
604 extern int printflags(const struct xlat *, int, const char *);
605 extern const char *sprintflags(const char *, const struct xlat *, int);
606 extern int umoven(struct tcb *, long, int, char *);
607 extern int umovestr(struct tcb *, long, int, char *);
608 extern int upeek(struct tcb *, long, long *);
609 extern void dumpiov(struct tcb *, int, long);
610 extern void dumpstr(struct tcb *, long, int);
611 extern void printstr(struct tcb *, long, int);
612 extern void printnum(struct tcb *, long, const char *);
613 extern void printnum_int(struct tcb *, long, const char *);
614 extern void printpath(struct tcb *, long);
615 extern void printpathn(struct tcb *, long, int);
616 extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
617 extern char *sprinttv(struct tcb *, long, enum bitness_t, char *);
618 extern void print_timespec(struct tcb *, long);
619 extern void sprint_timespec(char *, struct tcb *, long);
620 #ifdef HAVE_SIGINFO_T
621 extern void printsiginfo(siginfo_t *, int);
623 extern const char *getfdpath(struct tcb *, int);
624 extern void printfd(struct tcb *, int);
625 extern void printsock(struct tcb *, long, int);
626 extern void print_sock_optmgmt(struct tcb *, long, int);
627 extern void printrusage(struct tcb *, long);
629 extern void printrusage32(struct tcb *, long);
631 extern void printuid(const char *, unsigned long);
632 extern int clearbpt(struct tcb *);
634 * On Linux, "setbpt" is a misnomer: we don't set a breakpoint
635 * (IOW: no poking in user's text segment),
636 * instead we change fork/vfork/clone into clone(CLONE_PTRACE).
637 * On newer kernels, we use PTRACE_O_TRACECLONE/TRACE[V]FORK instead.
639 extern int setbpt(struct tcb *);
640 extern void printcall(struct tcb *);
641 extern const char *signame(int);
642 extern void print_sigset(struct tcb *, long, int);
643 extern void printsignal(int);
644 extern void printleader(struct tcb *);
645 extern void printtrailer(void);
646 extern void tabto(void);
647 extern void call_summary(FILE *);
648 extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
649 extern void tprint_open_modes(mode_t);
650 extern const char *sprint_open_modes(mode_t);
651 extern int is_restart_error(struct tcb *);
653 extern int pathtrace_select(const char *);
654 extern int pathtrace_match(struct tcb *);
656 extern int change_syscall(struct tcb *, int);
657 extern int internal_fork(struct tcb *);
658 extern int internal_exec(struct tcb *);
660 extern const struct ioctlent *ioctl_lookup(long);
661 extern const struct ioctlent *ioctl_next_match(const struct ioctlent *);
662 extern int ioctl_decode(struct tcb *, long, long);
663 extern int term_ioctl(struct tcb *, long, long);
664 extern int sock_ioctl(struct tcb *, long, long);
665 extern int proc_ioctl(struct tcb *, int, int);
666 extern int stream_ioctl(struct tcb *, int, int);
668 extern int rtc_ioctl(struct tcb *, long, long);
669 extern int scsi_ioctl(struct tcb *, long, long);
670 extern int block_ioctl(struct tcb *, long, long);
673 extern int tv_nz(struct timeval *);
674 extern int tv_cmp(struct timeval *, struct timeval *);
675 extern double tv_float(struct timeval *);
676 extern void tv_add(struct timeval *, struct timeval *, struct timeval *);
677 extern void tv_sub(struct timeval *, struct timeval *, struct timeval *);
678 extern void tv_mul(struct timeval *, struct timeval *, int);
679 extern void tv_div(struct timeval *, struct timeval *, int);
681 #if !defined HAVE_STPCPY
682 /* Some libc have stpcpy, some don't. Sigh...
683 * Roll our private implementation...
686 #define stpcpy strace_stpcpy
687 extern char *stpcpy(char *dst, const char *src);
691 extern int fixvfork(struct tcb *);
693 #if !(defined(LINUX) && !defined(SPARC) && !defined(SPARC64) && !defined(IA64) \
695 extern long getrval2(struct tcb *);
698 extern int proc_open(struct tcb *tcp, int attaching);
701 #define umove(pid, addr, objp) \
702 umoven((pid), (addr), sizeof *(objp), (char *) (objp))
704 #define printtv(tcp, addr) \
705 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
706 #define printtv_special(tcp, addr) \
707 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
709 extern void tprintf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
710 extern void tprints(const char *str);
712 #ifndef HAVE_STRERROR
713 const char *strerror(int);
715 #ifndef HAVE_STRSIGNAL
716 const char *strsignal(int);
719 extern int current_personality;
720 extern const int personality_wordsize[];
726 const char *sys_name;
727 long native_scno; /* Match against SYS_* constants. */
736 extern const struct sysent *sysent;
737 extern unsigned nsyscalls;
738 extern const char *const *errnoent;
739 extern unsigned nerrnos;
740 extern const struct ioctlent *ioctlent;
741 extern unsigned nioctlents;
742 extern const char *const *signalent;
743 extern unsigned nsignals;
745 #define SCNO_IN_RANGE(scno) ((unsigned long)(scno) < nsyscalls)
749 /* _l refers to the lower numbered u_arg,
750 * _h refers to the higher numbered u_arg
753 #if HAVE_LITTLE_ENDIAN_LONG_LONG
754 #define LONG_LONG(_l,_h) \
755 ((long long)((unsigned long long)(unsigned)(_l) | ((unsigned long long)(_h)<<32)))
757 #define LONG_LONG(_l,_h) \
758 ((long long)((unsigned long long)(unsigned)(_h) | ((unsigned long long)(_l)<<32)))
761 extern int printllval(struct tcb *, const char *, int);
768 extern int not_failing_only;
769 extern int show_fd_path;
770 extern int tracing_paths;