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.
36 # if _MIPS_SIM == _MIPS_SIM_ABI64
37 # define LINUX_MIPSN64
38 # elif _MIPS_SIM == _MIPS_SIM_NABI32
39 # define LINUX_MIPSN32
40 # elif _MIPS_SIM == _MIPS_SIM_ABI32
41 # define LINUX_MIPSO32
43 # error Unsupported _MIPS_SIM
53 #include <sys/types.h>
60 /* Open-coding isprint(ch) et al proved more efficient than calling
61 * generalized libc interface. We don't *want* to do non-ASCII anyway.
63 /* #include <ctype.h> */
69 #include <sys/syscall.h>
72 const char *strerror(int);
75 /* Some libc have stpcpy, some don't. Sigh...
76 * Roll our private implementation...
79 #define stpcpy strace_stpcpy
80 extern char *stpcpy(char *dst, const char *src);
84 # define __attribute__(x) /*nothing*/
88 # define offsetof(type, member) \
89 (((char *) &(((type *) NULL)->member)) - ((char *) (type *) NULL))
92 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
96 # define MAX(a, b) (((a) > (b)) ? (a) : (b))
99 # define MIN(a, b) (((a) < (b)) ? (a) : (b))
101 #define CLAMP(val, min, max) MIN(MAX(min, val), max)
103 /* Glibc has an efficient macro for sigemptyset
104 * (it just does one or two assignments of 0 to internal vector of longs).
106 #if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
107 # define sigemptyset __sigemptyset
110 /* Configuration section */
111 #ifndef DEFAULT_STRLEN
112 /* default maximum # of bytes printed in `printstr', change with -s switch */
113 # define DEFAULT_STRLEN 32
115 #ifndef DEFAULT_ACOLUMN
116 # define DEFAULT_ACOLUMN 40 /* default alignment column for results */
119 * Maximum number of args to a syscall.
121 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS!
122 * linux/<ARCH>/syscallent*.h:
123 * all have nargs <= 6 except mips o32 which has nargs <= 7.
126 # ifdef LINUX_MIPSO32
132 /* default sorting method for call profiling */
133 #ifndef DEFAULT_SORTBY
134 # define DEFAULT_SORTBY "time"
137 * Experimental code using PTRACE_SEIZE can be enabled here.
138 * This needs Linux kernel 3.4.x or later to work.
141 /* To force NOMMU build, set to 1 */
142 #define NOMMU_SYSTEM 0
144 * Set to 1 to use speed-optimized vfprintf implementation.
145 * It results in strace using about 5% less CPU in user space
146 * (compared to glibc version).
147 * But strace spends a lot of time in kernel space,
148 * so overall it does not appear to be a significant win.
149 * Thus disabled by default.
151 #define USE_CUSTOM_PRINTF 0
153 #ifdef NEED_PTRACE_PROTOTYPE_WORKAROUND
154 # define ptrace xptrace
155 # include <sys/ptrace.h>
157 extern long ptrace(int, int, char *, long);
159 # include <sys/ptrace.h>
163 # include <asm/ptrace.h>
167 # include <asm/ptrace.h> /* struct pt_regs */
171 # define ERESTARTSYS 512
173 #ifndef ERESTARTNOINTR
174 # define ERESTARTNOINTR 513
176 #ifndef ERESTARTNOHAND
177 # define ERESTARTNOHAND 514
179 #ifndef ERESTART_RESTARTBLOCK
180 # define ERESTART_RESTARTBLOCK 516
183 #if !HAVE_DECL_PTRACE_SETOPTIONS
184 # define PTRACE_SETOPTIONS 0x4200
186 #if !HAVE_DECL_PTRACE_GETEVENTMSG
187 # define PTRACE_GETEVENTMSG 0x4201
189 #if !HAVE_DECL_PTRACE_GETSIGINFO
190 # define PTRACE_GETSIGINFO 0x4202
193 #if !HAVE_DECL_PTRACE_O_TRACESYSGOOD
194 # define PTRACE_O_TRACESYSGOOD 0x00000001
196 #if !HAVE_DECL_PTRACE_O_TRACEFORK
197 # define PTRACE_O_TRACEFORK 0x00000002
199 #if !HAVE_DECL_PTRACE_O_TRACEVFORK
200 # define PTRACE_O_TRACEVFORK 0x00000004
202 #if !HAVE_DECL_PTRACE_O_TRACECLONE
203 # define PTRACE_O_TRACECLONE 0x00000008
205 #if !HAVE_DECL_PTRACE_O_TRACEEXEC
206 # define PTRACE_O_TRACEEXEC 0x00000010
208 #if !HAVE_DECL_PTRACE_O_TRACEEXIT
209 # define PTRACE_O_TRACEEXIT 0x00000040
212 #if !HAVE_DECL_PTRACE_EVENT_FORK
213 # define PTRACE_EVENT_FORK 1
215 #if !HAVE_DECL_PTRACE_EVENT_VFORK
216 # define PTRACE_EVENT_VFORK 2
218 #if !HAVE_DECL_PTRACE_EVENT_CLONE
219 # define PTRACE_EVENT_CLONE 3
221 #if !HAVE_DECL_PTRACE_EVENT_EXEC
222 # define PTRACE_EVENT_EXEC 4
224 #if !HAVE_DECL_PTRACE_EVENT_VFORK_DONE
225 # define PTRACE_EVENT_VFORK_DONE 5
227 #if !HAVE_DECL_PTRACE_EVENT_EXIT
228 # define PTRACE_EVENT_EXIT 6
231 #if !HAVE_DECL_PTRACE_PEEKUSER
232 # define PTRACE_PEEKUSER PTRACE_PEEKUSR
234 #if !HAVE_DECL_PTRACE_POKEUSER
235 # define PTRACE_POKEUSER PTRACE_POKEUSR
239 #define PTRACE_SEIZE 0x4206
240 #undef PTRACE_INTERRUPT
241 #define PTRACE_INTERRUPT 0x4207
243 #define PTRACE_LISTEN 0x4208
244 #undef PTRACE_EVENT_STOP
245 #define PTRACE_EVENT_STOP 128
262 # define PT_GR20 (20*4)
263 # define PT_GR26 (26*4)
264 # define PT_GR28 (28*4)
265 # define PT_IAOQ0 (106*4)
266 # define PT_IAOQ1 (107*4)
269 /* SH64 Linux - this code assumes the following kernel API for system calls:
271 System Call Offset 16 (actually, (syscall no.) | (0x1n << 16),
272 where n = no. of parameters.
273 Other regs Offset 24+
275 On entry: R2-7 = parameters 1-6 (as many as necessary)
276 On return: R9 = result. */
278 /* Offset for peeks of registers */
279 # define REG_OFFSET (24)
280 # define REG_GENERAL(x) (8*(x)+REG_OFFSET)
281 # define REG_PC (0*8)
282 # define REG_SYSCALL (2*8)
288 # define ARM_cpsr uregs[16]
289 # define ARM_pc uregs[15]
290 # define ARM_lr uregs[14]
291 # define ARM_sp uregs[13]
292 # define ARM_ip uregs[12]
293 # define ARM_fp uregs[11]
294 # define ARM_r10 uregs[10]
295 # define ARM_r9 uregs[9]
296 # define ARM_r8 uregs[8]
297 # define ARM_r7 uregs[7]
298 # define ARM_r6 uregs[6]
299 # define ARM_r5 uregs[5]
300 # define ARM_r4 uregs[4]
301 # define ARM_r3 uregs[3]
302 # define ARM_r2 uregs[2]
303 # define ARM_r1 uregs[1]
304 # define ARM_r0 uregs[0]
305 # define ARM_ORIG_r0 uregs[17]
308 #if defined(SPARC) || defined(SPARC64)
309 /* Indexes into the pt_regs.u_reg[] array -- UREG_XX from kernel are all off
310 * by 1 and use Ix instead of Ox. These work for both 32 and 64 bit Linux. */
314 # define PERSONALITY0_WORDSIZE 4
315 # define PERSONALITY1_WORDSIZE 4
316 # if defined(SPARC64)
317 # include <asm/psrcompat.h>
318 # define SUPPORTED_PERSONALITIES 3
319 # define PERSONALITY2_WORDSIZE 8
321 # include <asm/psr.h>
322 # define SUPPORTED_PERSONALITIES 2
323 # endif /* SPARC64 */
324 #endif /* SPARC[64] */
327 # define SUPPORTED_PERSONALITIES 3
328 # define PERSONALITY0_WORDSIZE 8
329 # define PERSONALITY1_WORDSIZE 4
330 # define PERSONALITY2_WORDSIZE 4
334 # define SUPPORTED_PERSONALITIES 2
335 # define PERSONALITY0_WORDSIZE 4
336 # define PERSONALITY1_WORDSIZE 4
340 /* one personality */
344 /* The existing ARM personality, then AArch64 */
345 # define SUPPORTED_PERSONALITIES 2
346 # define PERSONALITY0_WORDSIZE 4
347 # define PERSONALITY1_WORDSIZE 8
348 # define DEFAULT_PERSONALITY 1
352 # define SUPPORTED_PERSONALITIES 2
353 # define PERSONALITY0_WORDSIZE 8
354 # define PERSONALITY1_WORDSIZE 4
358 # define SUPPORTED_PERSONALITIES 2
359 # define PERSONALITY0_WORDSIZE 8
360 # define PERSONALITY1_WORDSIZE 4
362 # define DEFAULT_PERSONALITY 1
366 #ifndef SUPPORTED_PERSONALITIES
367 # define SUPPORTED_PERSONALITIES 1
369 #ifndef DEFAULT_PERSONALITY
370 # define DEFAULT_PERSONALITY 0
372 #ifndef PERSONALITY0_WORDSIZE
373 # define PERSONALITY0_WORDSIZE (int)(sizeof(long))
376 #if defined(I386) || defined(X86_64)
377 extern uint32_t *const i386_esp_ptr;
379 extern bool ia64_ia32mode;
380 #elif defined(SPARC) || defined(SPARC64)
381 extern struct pt_regs sparc_regs;
383 extern struct pt_regs arm_regs;
385 extern struct pt_regs tile_regs;
386 #elif defined(POWERPC)
387 extern struct pt_regs ppc_regs;
390 typedef struct sysent {
394 const char *sys_name;
397 typedef struct ioctlent {
403 /* Trace Control Block */
405 int flags; /* See below for TCB_ values */
406 int pid; /* If 0, this tcb is free */
407 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
408 int u_error; /* Error code */
409 long scno; /* System call number */
410 long u_arg[MAX_ARGS]; /* System call arguments */
411 #if defined(LINUX_MIPSN32) || defined(X32)
412 long long ext_arg[MAX_ARGS];
413 long long u_lrval; /* long long return value */
415 long u_rval; /* Return value */
416 #if SUPPORTED_PERSONALITIES > 1
417 int currpers; /* Personality at the time of scno update */
419 int curcol; /* Output column for this process */
420 FILE *outf; /* Output file for this process */
421 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
422 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
423 struct timeval stime; /* System time usage as of last process wait */
424 struct timeval dtime; /* Delta for system time usage */
425 struct timeval etime; /* Syscall entry time */
426 /* Support for tracing forked processes: */
427 long inst[2]; /* Saved clone args (badly named) */
431 /* We have attached to this process, but did not see it stopping yet */
432 #define TCB_STARTUP 0x01
433 #define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
435 * Are we in system call entry or in syscall exit?
437 * This bit is set after all syscall entry processing is done.
438 * Therefore, this bit will be set when next ptrace stop occurs,
439 * which should be syscall exit stop. Other stops which are possible
440 * directly after syscall entry (death, ptrace event stop)
441 * are simpler and handled without calling trace_syscall(), therefore
442 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
443 * are limited to trace(), this condition is never observed in trace_syscall()
445 * The bit is cleared after all syscall exit processing is done.
446 * User-generated SIGTRAPs and post-execve SIGTRAP make it necessary
447 * to be very careful and NOT set TCB_INSYSCALL bit when they are encountered.
448 * TCB_WAITEXECVE bit is used for this purpose (see below).
450 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
452 #define TCB_INSYSCALL 0x04
453 #define TCB_ATTACHED 0x08 /* We attached to it already */
454 #define TCB_BPTSET 0x10 /* "Breakpoint" set after fork(2) */
455 #define TCB_REPRINT 0x20 /* We should reprint this syscall on exit */
456 #define TCB_FILTERED 0x40 /* This system call has been filtered out */
458 * x86 does not need TCB_WAITEXECVE.
459 * It can detect post-execve SIGTRAP by looking at eax/rax.
460 * See "not a syscall entry (eax = %ld)\n" message.
462 * Note! On new kernels (about 2.5.46+), we use PTRACE_O_TRACEEXEC, which
463 * suppresses post-execve SIGTRAP. If you are adding a new arch which is
464 * only supported by newer kernels, you most likely don't need to define
468 || defined(SPARC) || defined(SPARC64) \
469 || defined(POWERPC) \
472 || defined(SH) || defined(SH64) \
473 || defined(S390) || defined(S390X) \
476 /* This tracee has entered into execve syscall. Expect post-execve SIGTRAP
477 * to happen. (When it is detected, tracee is continued and this bit is cleared.)
479 # define TCB_WAITEXECVE 0x80
482 /* qualifier flags */
483 #define QUAL_TRACE 0x001 /* this system call should be traced */
484 #define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
485 #define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
486 #define QUAL_RAW 0x008 /* print all args in hex for this syscall */
487 #define QUAL_SIGNAL 0x010 /* report events with this signal */
488 #define QUAL_READ 0x020 /* dump data read on this file descriptor */
489 #define QUAL_WRITE 0x040 /* dump data written to this file descriptor */
490 typedef uint8_t qualbits_t;
491 #define UNDEFINED_SCNO 0x100 /* Used only in tcp->qual_flg */
493 #define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
495 #define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
496 #define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
497 #define syserror(tcp) ((tcp)->u_error != 0)
498 #define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
499 #define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
500 #define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
506 #define XLAT(x) { x, #x }
507 #define XLAT_END { 0, NULL }
509 extern const struct xlat open_mode_flags[];
510 extern const struct xlat addrfams[];
511 extern const struct xlat struct_user_offsets[];
512 extern const struct xlat open_access_modes[];
513 extern const struct xlat whence_codes[];
515 /* Format of syscall return values */
516 #define RVAL_DECIMAL 000 /* decimal format */
517 #define RVAL_HEX 001 /* hex format */
518 #define RVAL_OCTAL 002 /* octal format */
519 #define RVAL_UDECIMAL 003 /* unsigned decimal format */
520 #if defined(LINUX_MIPSN32) || defined(X32)
521 # if 0 /* unused so far */
522 # define RVAL_LDECIMAL 004 /* long decimal format */
523 # define RVAL_LHEX 005 /* long hex format */
524 # define RVAL_LOCTAL 006 /* long octal format */
526 # define RVAL_LUDECIMAL 007 /* long unsigned decimal format */
528 #define RVAL_MASK 007 /* mask for these values */
530 #define RVAL_STR 010 /* Print `auxstr' field after return val */
531 #define RVAL_NONE 020 /* Print nothing */
533 #define TRACE_FILE 001 /* Trace file-related syscalls. */
534 #define TRACE_IPC 002 /* Trace IPC-related syscalls. */
535 #define TRACE_NETWORK 004 /* Trace network-related syscalls. */
536 #define TRACE_PROCESS 010 /* Trace process-related syscalls. */
537 #define TRACE_SIGNAL 020 /* Trace signal-related syscalls. */
538 #define TRACE_DESC 040 /* Trace file descriptor-related syscalls. */
539 #define TRACE_MEMORY 0100 /* Trace memory mapping-related syscalls. */
540 #define SYSCALL_NEVER_FAILS 0200 /* Syscall is always successful. */
547 extern cflag_t cflag;
548 extern bool debug_flag;
551 extern unsigned int qflag;
552 extern bool not_failing_only;
553 extern bool show_fd_path;
554 extern bool hide_log_until_execve;
555 /* are we filtering traces based on paths? */
556 extern const char **paths_selected;
557 #define tracing_paths (paths_selected != NULL)
558 extern bool need_fork_exec_workarounds;
559 extern unsigned xflag;
560 extern unsigned followfork;
561 extern unsigned ptrace_setoptions;
562 extern unsigned max_strlen;
563 extern unsigned os_release;
564 #undef KERNEL_VERSION
565 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
567 enum bitness_t { BITNESS_CURRENT = 0, BITNESS_32 };
569 void error_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
570 void perror_msg(const char *fmt, ...) __attribute__ ((format(printf, 1, 2)));
571 void error_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
572 void perror_msg_and_die(const char *fmt, ...) __attribute__ ((noreturn, format(printf, 1, 2)));
573 void die_out_of_memory(void) __attribute__ ((noreturn));
575 #if USE_CUSTOM_PRINTF
577 * See comment in vsprintf.c for allowed formats.
578 * Short version: %h[h]u, %zu, %tu are not allowed, use %[l[l]]u.
580 int strace_vfprintf(FILE *fp, const char *fmt, va_list args);
582 # define strace_vfprintf vfprintf
585 extern void set_sortby(const char *);
586 extern void set_overhead(int);
587 extern void qualify(const char *);
588 extern void print_pc(struct tcb *);
589 extern int trace_syscall(struct tcb *);
590 extern void count_syscall(struct tcb *, struct timeval *);
591 extern void call_summary(FILE *);
595 || defined(X86_64) || defined(X32) \
596 || defined(AARCH64) \
598 || defined(SPARC) || defined(SPARC64) \
604 extern long get_regs_error;
605 # define clear_regs() (get_regs_error = -1)
606 extern void get_regs(pid_t pid);
608 # define get_regs_error 0
609 # define clear_regs() ((void)0)
610 # define get_regs(pid) ((void)0)
612 extern int umoven(struct tcb *, long, int, char *);
613 #define umove(pid, addr, objp) \
614 umoven((pid), (addr), sizeof(*(objp)), (char *) (objp))
615 extern int umovestr(struct tcb *, long, int, char *);
616 extern int upeek(int pid, long, long *);
617 #if defined(SPARC) || defined(SPARC64) || defined(IA64) || defined(SH)
618 extern long getrval2(struct tcb *);
621 * On Linux, "setbpt" is a misnomer: we don't set a breakpoint
622 * (IOW: no poking in user's text segment),
623 * instead we change fork/vfork/clone into clone(CLONE_PTRACE).
624 * On newer kernels, we use PTRACE_O_TRACECLONE/TRACE[V]FORK instead.
626 extern int setbpt(struct tcb *);
627 extern int clearbpt(struct tcb *);
629 extern const char *signame(int);
630 extern void pathtrace_select(const char *);
631 extern int pathtrace_match(struct tcb *);
632 extern int getfdpath(struct tcb *, int, char *, unsigned);
634 extern const char *xlookup(const struct xlat *, int);
636 extern int string_to_uint(const char *str);
637 extern int string_quote(const char *, char *, long, int);
638 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
640 /* a refers to the lower numbered u_arg,
641 * b refers to the higher numbered u_arg
643 #if HAVE_LITTLE_ENDIAN_LONG_LONG
644 # define LONG_LONG(a,b) \
645 ((long long)((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32)))
647 # define LONG_LONG(a,b) \
648 ((long long)((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32)))
650 extern int printllval(struct tcb *, const char *, int);
652 extern void printxval(const struct xlat *, int, const char *);
653 extern int printargs(struct tcb *);
654 extern int printargs_lu(struct tcb *);
655 extern int printargs_ld(struct tcb *);
656 extern void addflags(const struct xlat *, int);
657 extern int printflags(const struct xlat *, int, const char *);
658 extern const char *sprintflags(const char *, const struct xlat *, int);
659 extern void dumpiov(struct tcb *, int, long);
660 extern void dumpstr(struct tcb *, long, int);
661 extern void printstr(struct tcb *, long, long);
662 extern void printnum(struct tcb *, long, const char *);
663 extern void printnum_int(struct tcb *, long, const char *);
664 extern void printpath(struct tcb *, long);
665 extern void printpathn(struct tcb *, long, int);
666 #define TIMESPEC_TEXT_BUFSIZE (sizeof(long)*3 * 2 + sizeof("{%u, %u}"))
667 #define TIMEVAL_TEXT_BUFSIZE TIMESPEC_TEXT_BUFSIZE
668 extern void printtv_bitness(struct tcb *, long, enum bitness_t, int);
669 #define printtv(tcp, addr) \
670 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 0)
671 #define printtv_special(tcp, addr) \
672 printtv_bitness((tcp), (addr), BITNESS_CURRENT, 1)
673 extern char *sprinttv(char *, struct tcb *, long, enum bitness_t, int special);
674 extern void print_timespec(struct tcb *, long);
675 extern void sprint_timespec(char *, struct tcb *, long);
676 #ifdef HAVE_SIGINFO_T
677 extern void printsiginfo(siginfo_t *, int);
678 extern void printsiginfo_at(struct tcb *tcp, long addr);
680 extern void printfd(struct tcb *, int);
681 extern void print_dirfd(struct tcb *, int);
682 extern void printsock(struct tcb *, long, int);
683 extern void print_sock_optmgmt(struct tcb *, long, int);
684 extern void printrusage(struct tcb *, long);
686 extern void printrusage32(struct tcb *, long);
688 extern void printuid(const char *, unsigned long);
689 extern void print_sigset_addr_len(struct tcb *, long, long);
690 extern void printsignal(int);
691 extern void tprint_iov(struct tcb *, unsigned long, unsigned long, int decode_iov);
692 extern void tprint_iov_upto(struct tcb *, unsigned long, unsigned long, int decode_iov, unsigned long);
693 extern void tprint_open_modes(mode_t);
694 extern const char *sprint_open_modes(mode_t);
695 extern void print_loff_t(struct tcb *, long);
697 extern const struct_ioctlent *ioctl_lookup(long);
698 extern const struct_ioctlent *ioctl_next_match(const struct_ioctlent *);
699 extern int ioctl_decode(struct tcb *, long, long);
700 extern int term_ioctl(struct tcb *, long, long);
701 extern int sock_ioctl(struct tcb *, long, long);
702 extern int proc_ioctl(struct tcb *, int, int);
703 extern int rtc_ioctl(struct tcb *, long, long);
704 extern int scsi_ioctl(struct tcb *, long, long);
705 extern int block_ioctl(struct tcb *, long, long);
706 extern int mtd_ioctl(struct tcb *, long, long);
707 extern int ubi_ioctl(struct tcb *, long, long);
708 extern int loop_ioctl(struct tcb *, long, long);
709 extern int ptp_ioctl(struct tcb *, long, long);
711 extern int tv_nz(struct timeval *);
712 extern int tv_cmp(struct timeval *, struct timeval *);
713 extern double tv_float(struct timeval *);
714 extern void tv_add(struct timeval *, struct timeval *, struct timeval *);
715 extern void tv_sub(struct timeval *, struct timeval *, struct timeval *);
716 extern void tv_mul(struct timeval *, struct timeval *, int);
717 extern void tv_div(struct timeval *, struct timeval *, int);
719 /* Strace log generation machinery.
721 * printing_tcp: tcb which has incomplete line being printed right now.
722 * NULL if last line has been completed ('\n'-terminated).
723 * printleader(tcp) examines it, finishes incomplete line if needed,
724 * the sets it to tcp.
725 * line_ended() clears printing_tcp and resets ->curcol = 0.
726 * tcp->curcol == 0 check is also used to detect completeness
727 * of last line, since in -ff mode just checking printing_tcp for NULL
730 * If you change this code, test log generation in both -f and -ff modes
732 * strace -oLOG -f[f] test/threaded_execve
733 * strace -oLOG -f[f] test/sigkill_rain
734 * strace -oLOG -f[f] -p "`pidof web_browser`"
736 extern struct tcb *printing_tcp;
737 extern void printleader(struct tcb *);
738 extern void line_ended(void);
739 extern void tabto(void);
740 extern void tprintf(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
741 extern void tprints(const char *str);
743 #if SUPPORTED_PERSONALITIES > 1
744 extern void set_personality(int personality);
745 extern unsigned current_personality;
747 # define set_personality(personality) ((void)0)
748 # define current_personality 0
751 #if SUPPORTED_PERSONALITIES == 1
752 # define current_wordsize PERSONALITY0_WORDSIZE
754 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
755 # define current_wordsize PERSONALITY0_WORDSIZE
757 extern unsigned current_wordsize;
761 /* In many, many places we play fast and loose and use
762 * tprintf("%d", (int) tcp->u_arg[N]) to print fds, pids etc.
763 * We probably need to use widen_to_long() instead:
765 #if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
766 # define widen_to_long(v) (current_wordsize == 4 ? (long)(int32_t)(v) : (long)(v))
768 # define widen_to_long(v) ((long)(v))
771 extern const struct_sysent sysent0[];
772 extern const char *const errnoent0[];
773 extern const char *const signalent0[];
774 extern const struct_ioctlent ioctlent0[];
775 extern qualbits_t *qual_vec[SUPPORTED_PERSONALITIES];
776 #define qual_flags (qual_vec[current_personality])
777 #if SUPPORTED_PERSONALITIES > 1
778 extern const struct_sysent *sysent;
779 extern const char *const *errnoent;
780 extern const char *const *signalent;
781 extern const struct_ioctlent *ioctlent;
783 # define sysent sysent0
784 # define errnoent errnoent0
785 # define signalent signalent0
786 # define ioctlent ioctlent0
788 extern unsigned nsyscalls;
789 extern unsigned nerrnos;
790 extern unsigned nsignals;
791 extern unsigned nioctlents;
792 extern unsigned num_quals;
795 * If you need non-NULL sysent[scno].sys_func and sysent[scno].sys_name
797 #define SCNO_IS_VALID(scno) \
798 ((unsigned long)(scno) < nsyscalls && sysent[scno].sys_func)
800 /* Only ensures that sysent[scno] isn't out of range */
801 #define SCNO_IN_RANGE(scno) \
802 ((unsigned long)(scno) < nsyscalls)