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.
41 #include <sys/types.h>
46 /* Open-coding isprint(ch) et al proved more efficient than calling
47 * generalized libc interface. We don't *want* to do non-ASCII anyway.
49 /* #include <ctype.h> */
55 #include "kernel_types.h"
56 #include "mpers_type.h"
57 #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 offsetofend(type, member) \
74 (offsetof(type, member) + sizeof(((type *)NULL)->member))
77 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]) + MUST_BE_ARRAY(a))
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
130 # define ERESTARTSYS 512
132 #ifndef ERESTARTNOINTR
133 # define ERESTARTNOINTR 513
135 #ifndef ERESTARTNOHAND
136 # define ERESTARTNOHAND 514
138 #ifndef ERESTART_RESTARTBLOCK
139 # define ERESTART_RESTARTBLOCK 516
143 # define SUPPORTED_PERSONALITIES 3
144 # define PERSONALITY2_WORDSIZE 4
145 # define PERSONALITY2_KLONGSIZE PERSONALITY0_KLONGSIZE
146 #elif defined AARCH64 \
147 || defined POWERPC64 \
152 # define SUPPORTED_PERSONALITIES 2
154 # define SUPPORTED_PERSONALITIES 1
157 #if defined TILE && defined __tilepro__
158 # define DEFAULT_PERSONALITY 1
160 # define DEFAULT_PERSONALITY 0
163 #define PERSONALITY0_WORDSIZE SIZEOF_LONG
164 #define PERSONALITY0_KLONGSIZE SIZEOF_KERNEL_LONG_T
165 #define PERSONALITY0_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
166 #define PERSONALITY0_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
168 #if SUPPORTED_PERSONALITIES > 1
169 # define PERSONALITY1_WORDSIZE 4
170 # define PERSONALITY1_KLONGSIZE PERSONALITY1_WORDSIZE
173 #if SUPPORTED_PERSONALITIES > 1 && defined HAVE_M32_MPERS
174 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
175 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
176 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
177 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
179 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
180 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
181 # define PERSONALITY1_INCLUDE_FUNCS "empty.h"
184 #if SUPPORTED_PERSONALITIES > 2 && defined HAVE_MX32_MPERS
185 # define PERSONALITY2_INCLUDE_FUNCS "mx32_funcs.h"
186 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "mx32_printer_decls.h"
187 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "mx32_printer_defs.h"
188 # define MPERS_mx32_IOCTL_MACROS "ioctl_redefs2.h"
190 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
191 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
192 # define PERSONALITY2_INCLUDE_FUNCS "empty.h"
195 typedef struct ioctlent {
207 /* Trace Control Block */
209 int flags; /* See below for TCB_ values */
210 int pid; /* If 0, this tcb is free */
211 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
212 unsigned long u_error; /* Error code */
213 kernel_ulong_t scno; /* System call number */
214 kernel_ulong_t u_arg[MAX_ARGS]; /* System call arguments */
215 kernel_long_t u_rval; /* Return value */
216 #if SUPPORTED_PERSONALITIES > 1
217 unsigned int currpers; /* Personality at the time of scno update */
219 int sys_func_rval; /* Syscall entry parser's return value */
220 int curcol; /* Output column for this process */
221 FILE *outf; /* Output file for this process */
222 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
223 void *_priv_data; /* Private data for syscall decoding functions */
224 void (*_free_priv_data)(void *); /* Callback for freeing priv_data */
225 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
226 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
227 struct fault_opts *fault_vec[SUPPORTED_PERSONALITIES];
228 struct timeval stime; /* System time usage as of last process wait */
229 struct timeval dtime; /* Delta for system time usage */
230 struct timeval etime; /* Syscall entry time */
233 struct UPT_info* libunwind_ui;
234 struct mmap_cache_t* mmap_cache;
235 unsigned int mmap_cache_size;
236 unsigned int mmap_cache_generation;
237 struct queue_t* queue;
242 /* We have attached to this process, but did not see it stopping yet */
243 #define TCB_STARTUP 0x01
244 #define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
246 * Are we in system call entry or in syscall exit?
248 * This bit is set after all syscall entry processing is done.
249 * Therefore, this bit will be set when next ptrace stop occurs,
250 * which should be syscall exit stop. Other stops which are possible
251 * directly after syscall entry (death, ptrace event stop)
252 * are simpler and handled without calling trace_syscall(), therefore
253 * the places where TCB_INSYSCALL can be set but we aren't in syscall stop
254 * are limited to trace(), this condition is never observed in trace_syscall()
256 * The bit is cleared after all syscall exit processing is done.
258 * Use entering(tcp) / exiting(tcp) to check this bit to make code more readable.
260 #define TCB_INSYSCALL 0x04
261 #define TCB_ATTACHED 0x08 /* We attached to it already */
262 #define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */
263 #define TCB_FILTERED 0x20 /* This system call has been filtered out */
264 #define TCB_FAULT_INJ 0x40 /* A syscall fault has been injected */
265 #define TCB_HIDE_LOG 0x80 /* We should hide everything (until execve) */
266 #define TCB_SKIP_DETACH_ON_FIRST_EXEC 0x100 /* -b execve should skip detach on first execve */
268 /* qualifier flags */
269 #define QUAL_TRACE 0x001 /* this system call should be traced */
270 #define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
271 #define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
272 #define QUAL_RAW 0x008 /* print all args in hex for this syscall */
273 #define QUAL_FAULT 0x010 /* fail this system call on purpose */
274 #define QUAL_SIGNAL 0x100 /* report events with this signal */
275 #define QUAL_READ 0x200 /* dump data read from this file descriptor */
276 #define QUAL_WRITE 0x400 /* dump data written to this file descriptor */
278 #define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
280 #define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
281 #define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
282 #define syserror(tcp) ((tcp)->u_error != 0)
283 #define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
284 #define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
285 #define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
286 #define hide_log(tcp) ((tcp)->flags & TCB_HIDE_LOG)
290 extern const struct xlat addrfams[];
291 extern const struct xlat at_flags[];
292 extern const struct xlat dirent_types[];
293 extern const struct xlat evdev_abs[];
294 extern const struct xlat msg_flags[];
295 extern const struct xlat open_access_modes[];
296 extern const struct xlat open_mode_flags[];
297 extern const struct xlat resource_flags[];
298 extern const struct xlat socketlayers[];
299 extern const struct xlat whence_codes[];
301 /* Format of syscall return values */
302 #define RVAL_DECIMAL 000 /* decimal format */
303 #define RVAL_HEX 001 /* hex format */
304 #define RVAL_OCTAL 002 /* octal format */
305 #define RVAL_UDECIMAL 003 /* unsigned decimal format */
306 #define RVAL_FD 010 /* file descriptor */
307 #define RVAL_MASK 013 /* mask for these values */
309 #define RVAL_STR 020 /* Print `auxstr' field after return val */
310 #define RVAL_NONE 040 /* Print nothing */
312 #define RVAL_DECODED 0100 /* syscall decoding finished */
314 #define IOCTL_NUMBER_UNKNOWN 0
315 #define IOCTL_NUMBER_HANDLED 1
316 #define IOCTL_NUMBER_STOP_LOOKUP 010
318 #define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL)
320 #if defined(ARM) || defined(AARCH64) \
321 || defined(I386) || defined(X32) || defined(X86_64) \
325 || defined(MICROBLAZE) \
328 || defined(SH) || defined(SH64) \
329 || defined(SPARC) || defined(SPARC64) \
331 # define NEED_UID16_PARSERS 1
333 # define NEED_UID16_PARSERS 0
345 extern enum sock_proto get_proto_by_name(const char *);
358 extern cflag_t cflag;
359 extern bool debug_flag;
362 extern bool count_wallclock;
363 extern unsigned int qflag;
364 extern bool not_failing_only;
365 extern unsigned int show_fd_path;
366 /* are we filtering traces based on paths? */
367 extern const char **paths_selected;
368 #define tracing_paths (paths_selected != NULL)
369 extern unsigned xflag;
370 extern unsigned followfork;
372 /* if this is true do the stack trace for every system call */
373 extern bool stack_trace_enabled;
375 extern unsigned ptrace_setoptions;
376 extern unsigned max_strlen;
377 extern unsigned os_release;
378 #undef KERNEL_VERSION
379 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
381 void error_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
382 void perror_msg(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
383 void error_msg_and_die(const char *fmt, ...)
384 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
385 void error_msg_and_help(const char *fmt, ...)
386 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
387 void perror_msg_and_die(const char *fmt, ...)
388 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
389 void die_out_of_memory(void) ATTRIBUTE_NORETURN;
391 void *xmalloc(size_t size) ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
392 void *xcalloc(size_t nmemb, size_t size)
393 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1, 2));
394 void *xreallocarray(void *ptr, size_t nmemb, size_t size)
395 ATTRIBUTE_ALLOC_SIZE((2, 3));
396 char *xstrdup(const char *str) ATTRIBUTE_MALLOC;
398 extern int read_int_from_file(const char *, int *);
400 extern void set_sortby(const char *);
401 extern void set_overhead(int);
402 extern void print_pc(struct tcb *);
403 extern int trace_syscall(struct tcb *, unsigned int *);
404 extern void count_syscall(struct tcb *, const struct timeval *);
405 extern void call_summary(FILE *);
407 extern void clear_regs(void);
408 extern void get_regs(pid_t pid);
409 extern int get_scno(struct tcb *tcp);
411 * Convert syscall number to syscall name.
413 * @param scno Syscall number.
414 * @return String literal corresponding to the syscall number in case latter
415 * is valid; NULL otherwise.
417 extern const char *syscall_name(kernel_ulong_t scno);
418 extern const char *err_name(unsigned long err);
420 extern bool is_erestart(struct tcb *);
421 extern void temporarily_clear_syserror(struct tcb *);
422 extern void restore_cleared_syserror(struct tcb *);
424 extern void *get_tcb_priv_data(const struct tcb *);
425 extern int set_tcb_priv_data(struct tcb *, void *priv_data,
426 void (*free_priv_data)(void *));
427 extern void free_tcb_priv_data(struct tcb *);
429 static inline unsigned long get_tcb_priv_ulong(const struct tcb *tcp)
431 return (unsigned long) get_tcb_priv_data(tcp);
434 static inline int set_tcb_priv_ulong(struct tcb *tcp, unsigned long val)
436 return set_tcb_priv_data(tcp, (void *) val, 0);
440 umoven(struct tcb *tcp, kernel_ulong_t addr, unsigned int len, void *laddr);
441 #define umove(pid, addr, objp) \
442 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
445 umoven_or_printaddr(struct tcb *tcp, kernel_ulong_t addr,
446 unsigned int len, void *laddr);
447 #define umove_or_printaddr(pid, addr, objp) \
448 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
451 umoven_or_printaddr_ignore_syserror(struct tcb *tcp, kernel_ulong_t addr,
452 unsigned int len, void *laddr);
455 umovestr(struct tcb *tcp, kernel_ulong_t addr, unsigned int len, char *laddr);
457 extern int upeek(int pid, unsigned long, kernel_ulong_t *);
458 extern int upoke(int pid, unsigned long, kernel_ulong_t);
461 print_array(struct tcb *tcp,
462 kernel_ulong_t start_addr,
466 int (*umoven_func)(struct tcb *,
470 bool (*print_func)(struct tcb *,
476 #if defined ALPHA || defined IA64 || defined MIPS \
477 || defined SH || defined SPARC || defined SPARC64
478 # define HAVE_GETRVAL2
479 extern long getrval2(struct tcb *);
481 # undef HAVE_GETRVAL2
484 extern const char *signame(const int);
485 extern void pathtrace_select(const char *);
486 extern int pathtrace_match(struct tcb *);
487 extern int getfdpath(struct tcb *, int, char *, unsigned);
488 extern enum sock_proto getfdproto(struct tcb *, int);
490 extern const char *xlookup(const struct xlat *, const uint64_t);
491 extern const char *xlat_search(const struct xlat *, const size_t, const uint64_t);
493 extern unsigned long get_pagesize(void);
495 string_to_uint_ex(const char *str, char **endptr,
496 unsigned int max_val, const char *accepted_ending);
497 extern int string_to_uint(const char *str);
499 string_to_uint_upto(const char *const str, unsigned int max_val)
501 return string_to_uint_ex(str, NULL, max_val, NULL);
503 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
505 #define QUOTE_0_TERMINATED 0x01
506 #define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
507 #define QUOTE_OMIT_TRAILING_0 0x08
508 #define QUOTE_FORCE_HEX 0x10
510 extern int string_quote(const char *, char *, unsigned int, unsigned int);
511 extern int print_quoted_string(const char *, unsigned int, unsigned int);
513 /* a refers to the lower numbered u_arg,
514 * b refers to the higher numbered u_arg
516 #ifdef WORDS_BIGENDIAN
517 # define ULONG_LONG(a,b) \
518 ((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32))
520 # define ULONG_LONG(a,b) \
521 ((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32))
523 extern int getllval(struct tcb *, unsigned long long *, int);
524 extern int printllval(struct tcb *, const char *, int)
525 ATTRIBUTE_FORMAT((printf, 2, 0));
527 extern void printaddr(kernel_ulong_t addr);
528 extern int printxvals(const uint64_t, const char *, const struct xlat *, ...)
530 extern int printxval_searchn(const struct xlat *xlat, size_t xlat_size,
531 uint64_t val, const char *dflt);
532 #define printxval_search(xlat__, val__, dflt__) \
533 printxval_searchn(xlat__, ARRAY_SIZE(xlat__), val__, dflt__)
534 extern int printargs(struct tcb *);
535 extern int printargs_u(struct tcb *);
536 extern int printargs_d(struct tcb *);
538 extern void addflags(const struct xlat *, uint64_t);
539 extern int printflags64(const struct xlat *, uint64_t, const char *);
540 extern const char *sprintflags(const char *, const struct xlat *, uint64_t);
541 extern const char *sprinttime(time_t);
542 extern void print_symbolic_mode_t(unsigned int);
543 extern void print_numeric_umode_t(unsigned short);
544 extern void print_numeric_long_umask(unsigned long);
545 extern void print_dev_t(unsigned long long dev);
548 dumpiov_in_msghdr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t data_size);
551 dumpiov_in_mmsghdr(struct tcb *, kernel_ulong_t addr);
554 dumpiov_upto(struct tcb *, int len, kernel_ulong_t addr, kernel_ulong_t data_size);
557 dumpstr(struct tcb *, kernel_ulong_t addr, int len);
560 printstr_ex(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len,
561 unsigned int user_style);
564 printpathn(struct tcb *, kernel_ulong_t addr, unsigned int n);
567 printpath(struct tcb *, kernel_ulong_t addr);
569 #define TIMESPEC_TEXT_BUFSIZE \
570 (sizeof(intmax_t)*3 * 2 + sizeof("{tv_sec=%jd, tv_nsec=%jd}"))
571 extern void printfd(struct tcb *, int);
572 extern void print_sockaddr(struct tcb *tcp, const void *, int);
573 extern bool print_sockaddr_by_inode(const unsigned long, const enum sock_proto);
574 extern bool print_sockaddr_by_inode_cached(const unsigned long);
575 extern void print_dirfd(struct tcb *, int);
578 decode_sockaddr(struct tcb *, kernel_ulong_t addr, int addrlen);
580 extern void printuid(const char *, const unsigned int);
583 print_sigset_addr_len(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
585 extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
586 #define tprintsigmask_addr(prefix, mask) \
587 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
588 extern void printsignal(int);
591 tprint_iov_upto(struct tcb *, kernel_ulong_t len, kernel_ulong_t addr,
592 enum iov_decode, kernel_ulong_t data_size);
595 decode_netlink(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
597 extern void tprint_open_modes(unsigned int);
598 extern const char *sprint_open_modes(unsigned int);
601 print_seccomp_filter(struct tcb *, kernel_ulong_t addr);
604 print_seccomp_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
607 extern void print_struct_stat(struct tcb *tcp, const struct strace_stat *const st);
609 struct strace_statfs;
612 print_struct_statfs(struct tcb *, kernel_ulong_t addr);
615 print_struct_statfs64(struct tcb *, kernel_ulong_t addr, kernel_ulong_t size);
617 extern void print_ifindex(unsigned int);
620 extern struct number_set read_set;
621 extern struct number_set write_set;
622 extern struct number_set signal_set;
624 extern bool is_number_in_set(unsigned int number, const struct number_set *);
625 extern void qualify(const char *);
626 extern unsigned int qual_flags(const unsigned int);
628 #define DECL_IOCTL(name) \
630 name ## _ioctl(struct tcb *, unsigned int request, kernel_ulong_t arg)
641 extern int decode_sg_io_v3(struct tcb *, const kernel_ulong_t arg);
642 extern int decode_sg_io_v4(struct tcb *, const kernel_ulong_t arg);
644 extern int tv_nz(const struct timeval *);
645 extern int tv_cmp(const struct timeval *, const struct timeval *);
646 extern double tv_float(const struct timeval *);
647 extern void tv_add(struct timeval *, const struct timeval *, const struct timeval *);
648 extern void tv_sub(struct timeval *, const struct timeval *, const struct timeval *);
649 extern void tv_mul(struct timeval *, const struct timeval *, int);
650 extern void tv_div(struct timeval *, const struct timeval *, int);
653 extern void unwind_init(void);
654 extern void unwind_tcb_init(struct tcb *tcp);
655 extern void unwind_tcb_fin(struct tcb *tcp);
656 extern void unwind_cache_invalidate(struct tcb* tcp);
657 extern void unwind_print_stacktrace(struct tcb* tcp);
658 extern void unwind_capture_stacktrace(struct tcb* tcp);
662 printstrn(struct tcb *tcp, kernel_ulong_t addr, kernel_ulong_t len)
664 printstr_ex(tcp, addr, len, 0);
668 printstr(struct tcb *tcp, kernel_ulong_t addr)
670 printstr_ex(tcp, addr, -1, QUOTE_0_TERMINATED);
674 printflags(const struct xlat *x, unsigned int flags, const char *dflt)
676 return printflags64(x, flags, dflt);
680 printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
682 return printxvals(val, dflt, x, NULL);
686 printxval(const struct xlat *x, const unsigned int val, const char *dflt)
688 return printxvals(val, dflt, x, NULL);
692 tprint_iov(struct tcb *tcp, kernel_ulong_t len, kernel_ulong_t addr,
693 enum iov_decode decode_iov)
695 tprint_iov_upto(tcp, len, addr, decode_iov, -1);
703 extern void print_timeval32_t(const timeval32_t *);
704 extern void printrusage32(struct tcb *, kernel_ulong_t);
705 extern const char *sprint_timeval32(struct tcb *tcp, kernel_ulong_t);
706 extern void print_timeval32(struct tcb *tcp, kernel_ulong_t);
707 extern void print_timeval32_pair(struct tcb *tcp, kernel_ulong_t);
708 extern void print_itimerval32(struct tcb *tcp, kernel_ulong_t);
711 #ifdef HAVE_STRUCT_USER_DESC
712 extern void print_user_desc(struct tcb *, kernel_ulong_t addr);
715 /* Strace log generation machinery.
717 * printing_tcp: tcb which has incomplete line being printed right now.
718 * NULL if last line has been completed ('\n'-terminated).
719 * printleader(tcp) examines it, finishes incomplete line if needed,
720 * the sets it to tcp.
721 * line_ended() clears printing_tcp and resets ->curcol = 0.
722 * tcp->curcol == 0 check is also used to detect completeness
723 * of last line, since in -ff mode just checking printing_tcp for NULL
726 * If you change this code, test log generation in both -f and -ff modes
728 * strace -oLOG -f[f] test/threaded_execve
729 * strace -oLOG -f[f] test/sigkill_rain
730 * strace -oLOG -f[f] -p "`pidof web_browser`"
732 extern struct tcb *printing_tcp;
733 extern void printleader(struct tcb *);
734 extern void line_ended(void);
735 extern void tabto(void);
736 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
737 extern void tprints(const char *str);
739 #if SUPPORTED_PERSONALITIES > 1
740 extern void set_personality(int personality);
741 extern unsigned current_personality;
743 # define set_personality(personality) ((void)0)
744 # define current_personality 0
747 #if SUPPORTED_PERSONALITIES == 1
748 # define current_wordsize PERSONALITY0_WORDSIZE
749 # define current_klongsize PERSONALITY0_KLONGSIZE
751 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
752 # define current_wordsize PERSONALITY0_WORDSIZE
754 extern unsigned current_wordsize;
756 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_KLONGSIZE == PERSONALITY1_KLONGSIZE
757 # define current_klongsize PERSONALITY0_KLONGSIZE
759 extern unsigned current_klongsize;
763 #define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG \
764 (SIZEOF_KERNEL_LONG_T > 4 \
765 && (SIZEOF_LONG < SIZEOF_KERNEL_LONG_T || !defined(current_wordsize)))
767 #define DECL_PRINTNUM(name) \
769 printnum_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
770 ATTRIBUTE_FORMAT((printf, 3, 0))
771 DECL_PRINTNUM(short);
773 DECL_PRINTNUM(int64);
776 #define DECL_PRINTNUM_ADDR(name) \
778 printnum_addr_ ## name(struct tcb *, kernel_ulong_t addr)
779 DECL_PRINTNUM_ADDR(int);
780 DECL_PRINTNUM_ADDR(int64);
781 #undef DECL_PRINTNUM_ADDR
783 #ifndef current_wordsize
785 printnum_long_int(struct tcb *, kernel_ulong_t addr,
786 const char *fmt_long, const char *fmt_int)
787 ATTRIBUTE_FORMAT((printf, 3, 0))
788 ATTRIBUTE_FORMAT((printf, 4, 0));
789 extern bool printnum_addr_long_int(struct tcb *, kernel_ulong_t addr);
790 # define printnum_slong(tcp, addr) \
791 printnum_long_int((tcp), (addr), "%" PRId64, "%d")
792 # define printnum_ulong(tcp, addr) \
793 printnum_long_int((tcp), (addr), "%" PRIu64, "%u")
794 # define printnum_ptr(tcp, addr) \
795 printnum_addr_long_int((tcp), (addr))
796 #elif current_wordsize > 4
797 # define printnum_slong(tcp, addr) \
798 printnum_int64((tcp), (addr), "%" PRId64)
799 # define printnum_ulong(tcp, addr) \
800 printnum_int64((tcp), (addr), "%" PRIu64)
801 # define printnum_ptr(tcp, addr) \
802 printnum_addr_int64((tcp), (addr))
803 #else /* current_wordsize == 4 */
804 # define printnum_slong(tcp, addr) \
805 printnum_int((tcp), (addr), "%d")
806 # define printnum_ulong(tcp, addr) \
807 printnum_int((tcp), (addr), "%u")
808 # define printnum_ptr(tcp, addr) \
809 printnum_addr_int((tcp), (addr))
812 #ifndef current_klongsize
813 extern bool printnum_addr_klong_int(struct tcb *, kernel_ulong_t addr);
814 # define printnum_kptr(tcp, addr) \
815 printnum_addr_klong_int((tcp), (addr))
816 #elif current_klongsize > 4
817 # define printnum_kptr(tcp, addr) \
818 printnum_addr_int64((tcp), (addr))
819 #else /* current_klongsize == 4 */
820 # define printnum_kptr(tcp, addr) \
821 printnum_addr_int((tcp), (addr))
824 #define DECL_PRINTPAIR(name) \
826 printpair_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
827 ATTRIBUTE_FORMAT((printf, 3, 0))
829 DECL_PRINTPAIR(int64);
830 #undef DECL_PRINTPAIR
832 static inline kernel_long_t
833 truncate_klong_to_current_wordsize(const kernel_long_t v)
835 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
836 if (current_wordsize < sizeof(v)) {
845 static inline kernel_ulong_t
846 truncate_kulong_to_current_wordsize(const kernel_ulong_t v)
848 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
849 if (current_wordsize < sizeof(v)) {
850 return (unsigned int) v;
859 * Cast a pointer or a pointer-sized integer to kernel_ulong_t.
861 #define ptr_to_kulong(v) ((kernel_ulong_t) (unsigned long) (v))
864 * Zero-extend a signed integer type to unsigned long long.
866 #define zero_extend_signed_to_ull(v) \
867 (sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
868 sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
869 sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
870 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
871 (unsigned long long) (v))
874 * Sign-extend an unsigned integer type to long long.
876 #define sign_extend_unsigned_to_ll(v) \
877 (sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
878 sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
879 sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
880 sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
883 extern const struct_sysent sysent0[];
884 extern const char *const errnoent0[];
885 extern const char *const signalent0[];
886 extern const struct_ioctlent ioctlent0[];
888 #if SUPPORTED_PERSONALITIES > 1
889 extern const struct_sysent *sysent;
890 extern const char *const *errnoent;
891 extern const char *const *signalent;
892 extern const struct_ioctlent *ioctlent;
894 # define sysent sysent0
895 # define errnoent errnoent0
896 # define signalent signalent0
897 # define ioctlent ioctlent0
900 extern unsigned nsyscalls;
901 extern unsigned nerrnos;
902 extern unsigned nsignals;
903 extern unsigned nioctlents;
905 extern const unsigned int nsyscall_vec[SUPPORTED_PERSONALITIES];
906 extern const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES];
907 extern struct fault_opts *fault_vec[SUPPORTED_PERSONALITIES];
909 #ifdef IN_MPERS_BOOTSTRAP
910 /* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
911 # define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
912 #else /* !IN_MPERS_BOOTSTRAP */
913 # if SUPPORTED_PERSONALITIES > 1
914 # include "printers.h"
916 # include "native_printer_decls.h"
918 # define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
919 #endif /* !IN_MPERS_BOOTSTRAP */
921 /* Checks that sysent[scno] is not out of range. */
923 scno_in_range(kernel_ulong_t scno)
925 return scno < nsyscalls;
929 * Checks whether scno is not out of range,
930 * its corresponding sysent[scno].sys_func is non-NULL,
931 * and its sysent[scno].sys_flags has no TRACE_INDIRECT_SUBCALL flag set.
934 scno_is_valid(kernel_ulong_t scno)
936 return scno_in_range(scno)
937 && sysent[scno].sys_func
938 && !(sysent[scno].sys_flags & TRACE_INDIRECT_SUBCALL);
941 #define MPERS_FUNC_NAME__(prefix, name) prefix ## name
942 #define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
943 #define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
945 #define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
947 #define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
949 #if SIZEOF_KERNEL_LONG_T > SIZEOF_LONG
955 #define PRI_kld PRI_kl"d"
956 #define PRI_klu PRI_kl"u"
957 #define PRI_klx PRI_kl"x"
960 * The kernel used to define 64-bit types on 64-bit systems on a per-arch
961 * basis. Some architectures would use unsigned long and others would use
962 * unsigned long long. These types were exported as part of the
963 * kernel-userspace ABI and now must be maintained forever. This matches
964 * what the kernel exports for each architecture so we don't need to cast
965 * every printing of __u64 or __s64 to stdint types.
968 # define PRI__64 "ll"
969 #elif defined ALPHA || defined IA64 || defined MIPS || defined POWERPC
972 # define PRI__64 "ll"
975 #define PRI__d64 PRI__64"d"
976 #define PRI__u64 PRI__64"u"
977 #define PRI__x64 PRI__64"x"
979 #endif /* !STRACE_DEFS_H */