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>
5 * Copyright (c) 2001-2019 The strace developers.
8 * SPDX-License-Identifier: LGPL-2.1-or-later
12 # define STRACE_DEFS_H
18 # include <features.h>
21 # include <inttypes.h>
22 # include <sys/types.h>
27 /* Open-coding isprint(ch) et al proved more efficient than calling
28 * generalized libc interface. We don't *want* to do non-ASCII anyway.
30 /* #include <ctype.h> */
34 # include <sys/time.h>
36 # include "arch_defs.h"
37 # include "error_prints.h"
38 # include "gcc_compat.h"
39 # include "kernel_types.h"
42 # include "mpers_type.h"
43 # include "string_to_uint.h"
47 # ifndef HAVE_STRERROR
48 const char *strerror(int);
51 /* Some libc have stpcpy, some don't. Sigh...
52 * Roll our private implementation...
55 # define stpcpy strace_stpcpy
56 extern char *stpcpy(char *dst, const char *src);
59 /* Glibc has an efficient macro for sigemptyset
60 * (it just does one or two assignments of 0 to internal vector of longs).
62 # if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
63 # define sigemptyset __sigemptyset
66 /* Configuration section */
67 # ifndef DEFAULT_STRLEN
68 /* default maximum # of bytes printed in `printstr', change with -s switch */
69 # define DEFAULT_STRLEN 32
71 # ifndef DEFAULT_ACOLUMN
72 # define DEFAULT_ACOLUMN 40 /* default alignment column for results */
75 * Maximum number of args to a syscall.
77 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS!
78 * linux/<ARCH>/syscallent*.h:
79 * all have nargs <= 6 except mips o32 which has nargs <= 7.
88 /* default sorting method for call profiling */
89 # ifndef DEFAULT_SORTBY
90 # define DEFAULT_SORTBY "time"
93 /* To force NOMMU build, set to 1 */
94 # define NOMMU_SYSTEM 0
97 # define ERESTARTSYS 512
99 # ifndef ERESTARTNOINTR
100 # define ERESTARTNOINTR 513
102 # ifndef ERESTARTNOHAND
103 # define ERESTARTNOHAND 514
105 # ifndef ERESTART_RESTARTBLOCK
106 # define ERESTART_RESTARTBLOCK 516
109 # define PERSONALITY0_WORDSIZE SIZEOF_LONG
110 # define PERSONALITY0_KLONGSIZE SIZEOF_KERNEL_LONG_T
111 # define PERSONALITY0_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
112 # define PERSONALITY0_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
114 # if SUPPORTED_PERSONALITIES > 1
115 # define PERSONALITY1_WORDSIZE 4
116 # define PERSONALITY1_KLONGSIZE PERSONALITY1_WORDSIZE
119 # if SUPPORTED_PERSONALITIES > 2
120 # define PERSONALITY2_WORDSIZE 4
121 # define PERSONALITY2_KLONGSIZE PERSONALITY0_KLONGSIZE
124 # if SUPPORTED_PERSONALITIES > 1 && defined HAVE_M32_MPERS
125 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
126 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
127 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
128 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
129 # define HAVE_PERSONALITY_1_MPERS 1
131 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
132 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
133 # define PERSONALITY1_INCLUDE_FUNCS "empty.h"
134 # define HAVE_PERSONALITY_1_MPERS 0
137 # if SUPPORTED_PERSONALITIES > 2 && defined HAVE_MX32_MPERS
138 # define PERSONALITY2_INCLUDE_FUNCS "mx32_funcs.h"
139 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "mx32_printer_decls.h"
140 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "mx32_printer_defs.h"
141 # define MPERS_mx32_IOCTL_MACROS "ioctl_redefs2.h"
142 # define HAVE_PERSONALITY_2_MPERS 1
144 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
145 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
146 # define PERSONALITY2_INCLUDE_FUNCS "empty.h"
147 # define HAVE_PERSONALITY_2_MPERS 0
150 # ifdef WORDS_BIGENDIAN
151 # define is_bigendian true
153 # define is_bigendian false
156 # if SUPPORTED_PERSONALITIES > 1
157 extern void set_personality(unsigned int personality);
158 extern unsigned current_personality;
160 # define set_personality(personality) ((void)0)
161 # define current_personality 0
164 # if SUPPORTED_PERSONALITIES == 1
165 # define current_wordsize PERSONALITY0_WORDSIZE
166 # define current_klongsize PERSONALITY0_KLONGSIZE
168 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
169 # define current_wordsize PERSONALITY0_WORDSIZE
171 extern unsigned current_wordsize;
173 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_KLONGSIZE == PERSONALITY1_KLONGSIZE
174 # define current_klongsize PERSONALITY0_KLONGSIZE
176 extern unsigned current_klongsize;
180 # define max_addr() (~0ULL >> ((8 - current_wordsize) * 8))
181 # define max_kaddr() (~0ULL >> ((8 - current_klongsize) * 8))
183 /* Shorthands for defining word/klong-based dispatcher function bodies */
184 # ifndef current_wordsize
185 # define opt_wordsize(opt_64_, opt_32_) \
186 ((current_wordsize > sizeof(uint32_t)) ? (opt_64_) : (opt_32_))
187 # define dispatch_wordsize(call_64_, call_32_, ...) \
188 ((current_wordsize > sizeof(uint32_t)) \
189 ? (call_64_)(__VA_ARGS__) : (call_32_)(__VA_ARGS__))
190 # elif current_wordsize > 4
191 # define opt_wordsize(opt_64_, opt_32_) (opt_64_)
192 # define dispatch_wordsize(call_64_, call_32_, ...) ((call_64_)(__VA_ARGS__))
193 # else /* current_wordsize == 4 */
194 # define opt_wordsize(opt_64_, opt_32_) (opt_32_)
195 # define dispatch_wordsize(call_64_, call_32_, ...) ((call_32_)(__VA_ARGS__))
198 # ifndef current_klongsize
199 # define opt_klongsize(opt_64_, opt_32_) \
200 ((current_klongsize > sizeof(uint32_t)) ? (opt_64_) : (opt_32_))
201 # define dispatch_klongsize(call_64_, call_32_, ...) \
202 ((current_klongsize > sizeof(uint32_t)) \
203 ? (call_64_)(__VA_ARGS__) : (call_32_)(__VA_ARGS__))
204 # elif current_klongsize > 4
205 # define opt_klongsize(opt_64_, opt_32_) (opt_64_)
206 # define dispatch_klongsize(call_64_, call_32_, ...) ((call_64_)(__VA_ARGS__))
207 # else /* current_klongsize == 4 */
208 # define opt_klongsize(opt_64_, opt_32_) (opt_32_)
209 # define dispatch_klongsize(call_64_, call_32_, ...) ((call_32_)(__VA_ARGS__))
213 typedef struct ioctlent {
218 # define INJECT_F_SIGNAL 0x01
219 # define INJECT_F_ERROR 0x02
220 # define INJECT_F_RETVAL 0x04
221 # define INJECT_F_DELAY_ENTER 0x08
222 # define INJECT_F_DELAY_EXIT 0x10
223 # define INJECT_F_SYSCALL 0x20
225 # define INJECT_ACTION_FLAGS \
229 |INJECT_F_DELAY_ENTER \
230 |INJECT_F_DELAY_EXIT \
234 uint8_t flags; /* 6 of 8 flags are used so far */
235 uint8_t signo; /* NSIG <= 128 */
236 uint16_t rval_idx; /* index in retval_vec */
237 uint16_t delay_idx; /* index in delay_data_vec */
238 uint16_t scno; /* syscall to be injected instead of -1 */
244 struct inject_data data;
247 # define MAX_ERRNO_VALUE 4095
249 /* Trace Control Block */
251 int flags; /* See below for TCB_ values */
252 int pid; /* If 0, this tcb is free */
253 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
254 # if SUPPORTED_PERSONALITIES > 1
255 unsigned int currpers; /* Personality at the time of scno update */
257 unsigned long u_error; /* Error code */
258 kernel_ulong_t scno; /* System call number */
259 kernel_ulong_t u_arg[MAX_ARGS]; /* System call arguments */
260 kernel_long_t u_rval; /* Return value */
261 int sys_func_rval; /* Syscall entry parser's return value */
262 int curcol; /* Output column for this process */
263 FILE *outf; /* Output file for this process */
264 struct staged_output_data *staged_output_data;
266 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
267 void *_priv_data; /* Private data for syscall decoding functions */
268 void (*_free_priv_data)(void *); /* Callback for freeing priv_data */
269 const struct_sysent *s_ent; /* sysent[scno] or a stub struct for bad
270 * scno. Use tcp_sysent() macro for access.
272 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
273 struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
274 struct timespec stime; /* System time usage as of last process wait */
275 struct timespec ltime; /* System time usage as of last syscall entry */
276 struct timespec atime; /* System time right after attach */
277 struct timespec etime; /* Syscall entry time (CLOCK_MONOTONIC) */
278 struct timespec delay_expiration_time; /* When does the delay end */
280 struct mmap_cache_t *mmap_cache;
283 * Data that is stored during process wait traversal.
284 * We use indices as the actual data is stored in an array
285 * that is realloc'ed at runtime.
287 size_t wait_data_idx;
288 /** Wait data storage for a delayed process. */
289 struct tcb_wait_data *delayed_wait_data;
290 struct list_item wait_list;
293 # ifdef HAVE_LINUX_KVM_H
294 struct vcpu_info *vcpu_info_list;
297 # ifdef ENABLE_STACKTRACE
299 struct unwind_queue_t *unwind_queue;
304 /* We have attached to this process, but did not see it stopping yet */
305 # define TCB_STARTUP 0x01
306 # define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
308 * Are we in system call entry or in syscall exit?
310 * This bit is set in syscall_entering_finish() and cleared in
311 * syscall_exiting_finish().
312 * Other stops which are possible directly after syscall entry (death, ptrace
313 * event stop) are handled without calling syscall_{entering,exiting}_*().
315 * Use entering(tcp) / exiting(tcp) to check this bit to make code more
318 # define TCB_INSYSCALL 0x04
319 # define TCB_ATTACHED 0x08 /* We attached to it already */
320 # define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */
321 # define TCB_FILTERED 0x20 /* This system call has been filtered out */
322 # define TCB_TAMPERED 0x40 /* A syscall has been tampered with */
323 # define TCB_HIDE_LOG 0x80 /* We should hide everything (until execve) */
324 # define TCB_CHECK_EXEC_SYSCALL 0x100 /* Check whether this execve syscall succeeded */
325 # define TCB_SKIP_DETACH_ON_FIRST_EXEC 0x200 /* -b execve should skip detach on first execve */
326 # define TCB_GRABBED 0x400 /* We grab the process and can catch it
327 * in the middle of a syscall */
328 # define TCB_RECOVERING 0x800 /* We try to recover after detecting incorrect
329 * syscall entering/exiting state */
330 # define TCB_INJECT_DELAY_EXIT 0x1000 /* Current syscall needs to be delayed
332 # define TCB_DELAYED 0x2000 /* Current syscall has been delayed */
333 # define TCB_TAMPERED_NO_FAIL 0x4000 /* We tamper tcb with syscall
334 that should not fail. */
335 # define TCB_SECCOMP_FILTER 0x8000 /* This process has a seccomp filter
339 /* qualifier flags */
340 # define QUAL_TRACE 0x001 /* this system call should be traced */
341 # define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
342 # define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
343 # define QUAL_RAW 0x008 /* print all args in hex for this syscall */
344 # define QUAL_INJECT 0x010 /* tamper with this system call on purpose */
346 # define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
348 # define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
349 # define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
350 # define syserror(tcp) ((tcp)->u_error != 0)
351 # define traced(tcp) ((tcp)->qual_flg & QUAL_TRACE)
352 # define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
353 # define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
354 # define raw(tcp) ((tcp)->qual_flg & QUAL_RAW)
355 # define inject(tcp) ((tcp)->qual_flg & QUAL_INJECT)
356 # define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
357 # define hide_log(tcp) ((tcp)->flags & TCB_HIDE_LOG)
358 # define check_exec_syscall(tcp) ((tcp)->flags & TCB_CHECK_EXEC_SYSCALL)
359 # define syscall_tampered(tcp) ((tcp)->flags & TCB_TAMPERED)
360 # define recovering(tcp) ((tcp)->flags & TCB_RECOVERING)
361 # define inject_delay_exit(tcp) ((tcp)->flags & TCB_INJECT_DELAY_EXIT)
362 # define syscall_delayed(tcp) ((tcp)->flags & TCB_DELAYED)
363 # define syscall_tampered_nofail(tcp) ((tcp)->flags & TCB_TAMPERED_NO_FAIL)
364 # define has_seccomp_filter(tcp) ((tcp)->flags & TCB_SECCOMP_FILTER)
366 extern const struct_sysent stub_sysent;
367 # define tcp_sysent(tcp) (tcp->s_ent ?: &stub_sysent)
368 # define n_args(tcp) (tcp_sysent(tcp)->nargs)
372 extern const struct xlat addrfams[];
373 extern const struct xlat arp_hardware_types[];
374 extern const struct xlat at_flags[];
375 extern const struct xlat clocknames[];
376 extern const struct xlat dirent_types[];
377 extern const struct xlat ethernet_protocols[];
378 extern const struct xlat inet_protocols[];
379 extern const struct xlat evdev_abs[];
380 extern const struct xlat audit_arch[];
381 extern const struct xlat evdev_ev[];
382 extern const struct xlat iffflags[];
383 extern const struct xlat ip_type_of_services[];
384 extern const struct xlat ipc_private[];
385 extern const struct xlat msg_flags[];
386 extern const struct xlat netlink_protocols[];
387 extern const struct xlat nl_netfilter_msg_types[];
388 extern const struct xlat nl_route_types[];
389 extern const struct xlat open_access_modes[];
390 extern const struct xlat open_mode_flags[];
391 extern const struct xlat pollflags[];
392 extern const struct xlat ptrace_cmds[];
393 extern const struct xlat resource_flags[];
394 extern const struct xlat routing_scopes[];
395 extern const struct xlat routing_table_ids[];
396 extern const struct xlat routing_types[];
397 extern const struct xlat rwf_flags[];
398 extern const struct xlat seccomp_filter_flags[];
399 extern const struct xlat seccomp_ret_action[];
400 extern const struct xlat setns_types[];
401 extern const struct xlat sg_io_info[];
402 extern const struct xlat socketlayers[];
403 extern const struct xlat socktypes[];
404 extern const struct xlat tcp_state_flags[];
405 extern const struct xlat tcp_states[];
406 extern const struct xlat whence_codes[];
408 /* Format of syscall return values */
409 # define RVAL_UDECIMAL 000 /* unsigned decimal format */
410 # define RVAL_HEX 001 /* hex format */
411 # define RVAL_OCTAL 002 /* octal format */
412 # define RVAL_FD 010 /* file descriptor */
413 # define RVAL_MASK 013 /* mask for these values */
415 # define RVAL_STR 020 /* Print `auxstr' field after return val */
416 # define RVAL_NONE 040 /* Print nothing */
418 # define RVAL_DECODED 0100 /* syscall decoding finished */
419 # define RVAL_IOCTL_DECODED 0200 /* ioctl sub-parser successfully decoded
422 # define IOCTL_NUMBER_UNKNOWN 0
423 # define IOCTL_NUMBER_HANDLED 1
424 # define IOCTL_NUMBER_STOP_LOOKUP 010
426 # define indirect_ipccall(tcp) (tcp_sysent(tcp)->sys_flags & TRACE_INDIRECT_SUBCALL)
441 SOCK_PROTO_UDPLITEv6,
443 SOCK_PROTO_L2TP_IPv6,
449 extern enum sock_proto get_proto_by_name(const char *);
450 extern int get_family_by_proto(enum sock_proto proto);
463 extern cflag_t cflag;
466 extern bool count_wallclock;
467 extern unsigned int qflag;
468 extern unsigned int show_fd_path;
469 /* are we filtering traces based on paths? */
470 extern struct path_set {
471 const char **paths_selected;
475 # define tracing_paths (global_path_set.num_selected != 0)
476 extern unsigned xflag;
477 extern unsigned followfork;
478 # ifdef ENABLE_STACKTRACE
479 /* if this is true do the stack trace for every system call */
480 extern bool stack_trace_enabled;
482 # define stack_trace_enabled 0
484 extern unsigned ptrace_setoptions;
485 extern unsigned max_strlen;
486 extern unsigned os_release;
487 # undef KERNEL_VERSION
488 # define KERNEL_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
490 extern int read_int_from_file(struct tcb *, const char *, int *);
492 extern void set_sortby(const char *);
493 extern int set_overhead(const char *);
495 extern bool get_instruction_pointer(struct tcb *, kernel_ulong_t *);
496 extern bool get_stack_pointer(struct tcb *, kernel_ulong_t *);
497 extern void print_instruction_pointer(struct tcb *);
499 extern void print_syscall_resume(struct tcb *tcp);
501 extern int syscall_entering_decode(struct tcb *);
502 extern int syscall_entering_trace(struct tcb *, unsigned int *);
503 extern void syscall_entering_finish(struct tcb *, int);
505 extern int syscall_exiting_decode(struct tcb *, struct timespec *);
506 extern int syscall_exiting_trace(struct tcb *, struct timespec *, int);
507 extern void syscall_exiting_finish(struct tcb *);
509 extern void count_syscall(struct tcb *, const struct timespec *);
510 extern void call_summary(FILE *);
512 extern void clear_regs(struct tcb *tcp);
513 extern int get_scno(struct tcb *);
514 extern kernel_ulong_t get_rt_sigframe_addr(struct tcb *);
517 * Convert a (shuffled) syscall number to the corresponding syscall name.
519 * @param scno Syscall number.
520 * @return String literal corresponding to the syscall number in case latter
521 * is valid; NULL otherwise.
523 extern const char *syscall_name(kernel_ulong_t scno);
525 * Convert a syscall name to the corresponding (shuffled) syscall number.
527 * @param s Syscall name.
528 * @param p Personality.
529 * @param start From which position in syscall entry table resume the search.
530 * @return Shuffled syscall number (ready to use against sysent_vec)
531 * if syscall name is found; -1 otherwise.
533 extern kernel_long_t scno_by_name(const char *s, unsigned p,
534 kernel_long_t start);
536 * Shuffle syscall numbers so that we don't have huge gaps in syscall table.
537 * The shuffling should be an involution: shuffle_scno(shuffle_scno(n)) == n.
539 * @param scno Raw or shuffled syscall number.
540 * @return Shuffled or raw syscall number, respectively.
542 extern kernel_ulong_t shuffle_scno(kernel_ulong_t scno);
544 * Print error name in accordance with current xlat style setting.
546 * @param err Error value.
547 * @param negated If set to true, negative values of the err parameter indicate
548 * error condition, otherwise positive.
550 extern void print_err(int64_t err, bool negated);
552 extern bool is_erestart(struct tcb *);
553 extern void temporarily_clear_syserror(struct tcb *);
554 extern void restore_cleared_syserror(struct tcb *);
556 extern void *get_tcb_priv_data(const struct tcb *);
557 extern int set_tcb_priv_data(struct tcb *, void *priv_data,
558 void (*free_priv_data)(void *));
559 extern void free_tcb_priv_data(struct tcb *);
561 static inline unsigned long get_tcb_priv_ulong(const struct tcb *tcp)
563 return (unsigned long) get_tcb_priv_data(tcp);
566 static inline int set_tcb_priv_ulong(struct tcb *tcp, unsigned long val)
568 return set_tcb_priv_data(tcp, (void *) val, 0);
572 * @return 0 on success, -1 on error.
575 umoven(struct tcb *, kernel_ulong_t addr, unsigned int len, void *laddr);
576 # define umove(pid, addr, objp) \
577 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
580 * @return true on success, false on error.
583 tfetch_mem64(struct tcb *, uint64_t addr, unsigned int len, void *laddr);
586 tfetch_mem(struct tcb *tcp, const kernel_ulong_t addr,
587 unsigned int len, void *laddr)
589 return tfetch_mem64(tcp, addr, len, laddr);
591 # define tfetch_obj(pid, addr, objp) \
592 tfetch_mem((pid), (addr), sizeof(*(objp)), (void *) (objp))
595 * @return true on success, false on error.
598 tfetch_mem64_ignore_syserror(struct tcb *, uint64_t addr,
599 unsigned int len, void *laddr);
602 tfetch_mem_ignore_syserror(struct tcb *tcp, const kernel_ulong_t addr,
603 unsigned int len, void *laddr)
605 return tfetch_mem64_ignore_syserror(tcp, addr, len, laddr);
609 * @return 0 on success, -1 on error (and print addr).
612 umoven_or_printaddr64(struct tcb *, uint64_t addr,
613 unsigned int len, void *laddr);
614 # define umove_or_printaddr64(pid, addr, objp) \
615 umoven_or_printaddr64((pid), (addr), sizeof(*(objp)), (void *) (objp))
618 umoven_or_printaddr(struct tcb *tcp, const kernel_ulong_t addr,
619 unsigned int len, void *laddr)
621 return umoven_or_printaddr64(tcp, addr, len, laddr);
623 # define umove_or_printaddr(pid, addr, objp) \
624 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
627 * @return 0 on success, -1 on error (and print addr).
630 umoven_or_printaddr64_ignore_syserror(struct tcb *, uint64_t addr,
631 unsigned int len, void *laddr);
632 # define umove_or_printaddr64_ignore_syserror(pid, addr, objp) \
633 umoven_or_printaddr64_ignore_syserror((pid), (addr), sizeof(*(objp)), \
637 umoven_or_printaddr_ignore_syserror(struct tcb *tcp, const kernel_ulong_t addr,
638 unsigned int len, void *laddr)
640 return umoven_or_printaddr64_ignore_syserror(tcp, addr, len, laddr);
642 # define umove_or_printaddr_ignore_syserror(pid, addr, objp) \
643 umoven_or_printaddr_ignore_syserror((pid), (addr), sizeof(*(objp)), \
647 * @return strlen + 1 on success, 0 on success and no NUL seen, -1 on error.
650 umovestr(struct tcb *, kernel_ulong_t addr, unsigned int len, char *laddr);
652 /* Invalidate the cache used by umove* functions. */
653 extern void invalidate_umove_cache(void);
655 extern int upeek(struct tcb *tcp, unsigned long, kernel_ulong_t *);
656 extern int upoke(struct tcb *tcp, unsigned long, kernel_ulong_t);
658 # if HAVE_ARCH_GETRVAL2
659 extern long getrval2(struct tcb *);
662 extern const char *signame(const int);
663 extern const char *sprintsigname(const int);
664 extern void pathtrace_select_set(const char *, struct path_set *);
665 extern bool pathtrace_match_set(struct tcb *, struct path_set *);
668 pathtrace_select(const char *path)
670 return pathtrace_select_set(path, &global_path_set);
674 pathtrace_match(struct tcb *tcp)
676 return pathtrace_match_set(tcp, &global_path_set);
679 extern int getfdpath(struct tcb *, int, char *, unsigned);
680 extern unsigned long getfdinode(struct tcb *, int);
681 extern enum sock_proto getfdproto(struct tcb *, int);
683 extern const char *xlookup(const struct xlat *, const uint64_t);
684 extern const char *xlookup_le(const struct xlat *, uint64_t *);
687 struct dyxlat *dyxlat_alloc(size_t nmemb);
688 void dyxlat_free(struct dyxlat *);
689 const struct xlat *dyxlat_get(const struct dyxlat *);
690 void dyxlat_add_pair(struct dyxlat *, uint64_t val, const char *str, size_t len);
692 const struct xlat *genl_families_xlat(struct tcb *tcp);
694 extern unsigned long get_pagesize(void);
695 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
698 * Returns STR if it does not start with PREFIX,
699 * or a pointer to the first char in STR after PREFIX.
700 * The length of PREFIX is specified by PREFIX_LEN.
702 static inline const char *
703 str_strip_prefix_len(const char *str, const char *prefix, size_t prefix_len)
705 return strncmp(str, prefix, prefix_len) ? str : str + prefix_len;
708 # define STR_STRIP_PREFIX(str, prefix) \
709 str_strip_prefix_len((str), (prefix), sizeof(prefix) - 1)
711 # define QUOTE_0_TERMINATED 0x01
712 # define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
713 # define QUOTE_OMIT_TRAILING_0 0x08
714 # define QUOTE_FORCE_HEX 0x10
715 # define QUOTE_EMIT_COMMENT 0x20
717 extern int string_quote(const char *, char *, unsigned int, unsigned int,
718 const char *escape_chars);
719 extern int print_quoted_string_ex(const char *, unsigned int, unsigned int,
720 const char *escape_chars);
721 extern int print_quoted_string(const char *, unsigned int, unsigned int);
722 extern int print_quoted_cstring(const char *, unsigned int);
724 /* a refers to the lower numbered u_arg,
725 * b refers to the higher numbered u_arg
727 # ifdef WORDS_BIGENDIAN
728 # define ULONG_LONG(a, b) \
729 ((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32))
731 # define ULONG_LONG(a, b) \
732 ((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32))
734 extern int getllval(struct tcb *, unsigned long long *, int);
735 extern int printllval(struct tcb *, const char *, int)
736 ATTRIBUTE_FORMAT((printf, 2, 0));
738 extern void printaddr64(uint64_t addr);
741 printaddr(const kernel_ulong_t addr)
746 # define xlat_verbose(style_) ((style_) & XLAT_STYLE_VERBOSITY_MASK)
747 # define xlat_format(style_) ((style_) & XLAT_STYLE_FORMAT_MASK)
749 extern enum xlat_style xlat_verbosity;
751 extern int printxvals_ex(uint64_t val, const char *dflt,
752 enum xlat_style, const struct xlat *, ...)
754 # define printxvals(val_, dflt_, ...) \
755 printxvals_ex((val_), (dflt_), XLAT_STYLE_DEFAULT, __VA_ARGS__)
756 # define printxval_ex(xlat_, val_, dflt_, style_) \
757 printxvals_ex((val_), (dflt_), (style_), (xlat_), NULL)
759 extern int sprintxval_ex(char *buf, size_t size, const struct xlat *,
760 unsigned int val, const char *dflt, enum xlat_style);
763 sprintxval(char *buf, size_t size, const struct xlat *xlat, unsigned int val,
766 return sprintxval_ex(buf, size, xlat, val, dflt, XLAT_STYLE_DEFAULT);
769 enum xlat_style_private_flag_bits {
771 PAF_PRINT_INDICES_BIT = XLAT_STYLE_SPEC_BITS + 1,
772 PAF_ARRAY_TRUNCATED_BIT,
778 enum xlat_style_private_flags {
780 FLAG(PAF_PRINT_INDICES),
781 FLAG(PAF_ARRAY_TRUNCATED),
784 FLAG(PXF_DEFAULT_STR),
787 /** Print a value in accordance with xlat formatting settings. */
788 extern void print_xlat_ex(uint64_t val, const char *str, enum xlat_style style);
789 # define print_xlat(val_) \
790 print_xlat_ex((val_), #val_, XLAT_STYLE_DEFAULT)
791 # define print_xlat32(val_) \
792 print_xlat_ex((uint32_t) (val_), #val_, XLAT_STYLE_DEFAULT)
793 # define print_xlat_u(val_) \
794 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_U)
795 # define print_xlat_d(val_) \
796 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_D)
798 extern int printargs(struct tcb *);
799 extern int printargs_u(struct tcb *);
800 extern int printargs_d(struct tcb *);
802 extern int printflags_ex(uint64_t flags, const char *dflt,
803 enum xlat_style, const struct xlat *, ...)
805 extern const char *sprintflags_ex(const char *prefix, const struct xlat *,
806 uint64_t flags, char sep, enum xlat_style);
808 static inline const char *
809 sprintflags(const char *prefix, const struct xlat *xlat, uint64_t flags)
811 return sprintflags_ex(prefix, xlat, flags, '\0', XLAT_STYLE_DEFAULT);
814 extern const char *sprinttime(long long sec);
815 extern const char *sprinttime_nsec(long long sec, unsigned long long nsec);
816 extern const char *sprinttime_usec(long long sec, unsigned long long usec);
818 # ifndef MAX_ADDR_LEN
819 # define MAX_ADDR_LEN 32
822 extern const char *sprint_mac_addr(const uint8_t addr[], size_t size);
823 extern void print_mac_addr(const char *prefix,
824 const uint8_t addr[], size_t size);
826 extern const char *sprint_hwaddr(const uint8_t addr[], size_t size,
828 extern void print_hwaddr(const char *prefix,
829 const uint8_t addr[], size_t size, uint32_t devtype);
831 extern void print_uuid(const unsigned char *uuid);
833 extern void print_symbolic_mode_t(unsigned int);
834 extern void print_numeric_umode_t(unsigned short);
835 extern void print_numeric_long_umask(unsigned long);
836 extern void print_dev_t(unsigned long long dev);
837 extern void print_kernel_version(unsigned long version);
838 extern void print_abnormal_hi(kernel_ulong_t);
839 extern void print_ioprio(unsigned int ioprio);
841 extern bool print_int32_array_member(struct tcb *, void *elem_buf,
842 size_t elem_size, void *data);
843 extern bool print_uint32_array_member(struct tcb *, void *elem_buf,
844 size_t elem_size, void *data);
845 extern bool print_uint64_array_member(struct tcb *, void *elem_buf,
846 size_t elem_size, void *data);
847 extern bool print_xint32_array_member(struct tcb *, void *elem_buf,
848 size_t elem_size, void *data);
849 extern bool print_xint64_array_member(struct tcb *, void *elem_buf,
850 size_t elem_size, void *data);
853 print_xlong_array_member(struct tcb *tcp, void *elem_buf, size_t elem_size,
856 return dispatch_wordsize(print_xint64_array_member,
857 print_xint32_array_member,
858 tcp, elem_buf, elem_size, data);
862 typedef bool (*tfetch_mem_fn)(struct tcb *, kernel_ulong_t addr,
863 unsigned int size, void *dest);
864 typedef bool (*print_fn)(struct tcb *, void *elem_buf,
865 size_t elem_size, void *opaque_data);
866 typedef int (*print_obj_by_addr_fn)(struct tcb *, kernel_ulong_t);
867 typedef const char * (*sprint_obj_by_addr_fn)(struct tcb *, kernel_ulong_t);
871 * Array printing function with over-engineered interface.
873 * @param start_addr If tfetch_mem_fn is non-NULL: address in tracee's
874 * memory where the start of the array is located.
875 * If tfetch_mem_fn is NULL: ignored.
876 * @param nmemb Number of elements in array.
877 * @param elem_buf If tfetch_mem_fn is non-NULL: a buffer where each
878 * element fetched by tfetch_mem_fn is stored.
879 * If tfetch_mem_fn is NULL: address of the start of
880 * the array in local memory.
881 * @param elem_size Size (in bytes) of each element in the array.
882 * @param tfetch_mem_fn Fetching function. If NULL, then elem_buf is treated
883 * as local array of nmemb members elem_size each;
884 * start_addr is ignored.
885 * @param print_func Element printing callback.
886 * @param opaque_data A value that is unconditionally passed to print_func
887 * in opaque_data argument.
888 * @param flags Combination of xlat style settings and additional
889 * flags from enum print_array_flags.
890 * @param index_xlat Xlat array that is used for printing indices.
891 * @param index_xlat_size The size of xlat array.
892 * @param index_dflt Default string for the values not found
896 print_array_ex(struct tcb *,
897 kernel_ulong_t start_addr,
901 tfetch_mem_fn tfetch_mem_func,
905 const struct xlat *index_xlat,
906 const char *index_dflt);
908 /** Print an array from tracee's memory without any index printing features. */
910 print_array(struct tcb *const tcp,
911 const kernel_ulong_t start_addr,
913 void *const elem_buf,
914 const size_t elem_size,
915 tfetch_mem_fn tfetch_mem_func,
917 void *const opaque_data)
919 return print_array_ex(tcp, start_addr, nmemb, elem_buf, elem_size,
920 tfetch_mem_func, print_func, opaque_data,
924 /** Shorthand for printing local arrays. */
926 print_local_array(struct tcb *tcp,
929 void *const elem_buf,
930 const size_t elem_size,
932 void *const opaque_data,
935 return print_array_ex(tcp, (uintptr_t) start_addr , nmemb,
936 elem_buf, elem_size, NULL, print_func,
937 opaque_data, flags, NULL, NULL);
940 extern kernel_ulong_t *
941 fetch_indirect_syscall_args(struct tcb *, kernel_ulong_t addr, unsigned int n_args);
944 dumpiov_in_msghdr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t data_size);
947 dumpiov_in_mmsghdr(struct tcb *, kernel_ulong_t addr);
950 dumpiov_upto(struct tcb *, int len, kernel_ulong_t addr, kernel_ulong_t data_size);
953 dumpstr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
956 printstr_ex(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len,
957 unsigned int user_style);
960 printpathn(struct tcb *, kernel_ulong_t addr, unsigned int n);
963 printpath(struct tcb *, kernel_ulong_t addr);
965 # define TIMESPEC_TEXT_BUFSIZE \
966 (sizeof(long long) * 3 * 2 + sizeof("{tv_sec=-, tv_nsec=}"))
967 extern void printfd(struct tcb *, int);
968 extern void print_sockaddr(const void *sa, int len);
970 print_inet_addr(int af, const void *addr, unsigned int len, const char *var_name);
972 decode_inet_addr(struct tcb *, kernel_ulong_t addr,
973 unsigned int len, int family, const char *var_name);
974 extern void print_ax25_addr(const void /* ax25_address */ *addr);
975 extern void print_x25_addr(const void /* struct x25_address */ *addr);
976 extern const char *get_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
977 extern bool print_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
978 extern void print_dirfd(struct tcb *, int);
981 decode_sockaddr(struct tcb *, kernel_ulong_t addr, int addrlen);
983 extern void printuid(const char *, const unsigned int);
986 print_sigset_addr_len(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
988 print_sigset_addr(struct tcb *, kernel_ulong_t addr);
990 extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
991 # define tprintsigmask_addr(prefix, mask) \
992 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
993 extern void printsignal(int);
996 tprint_iov_upto(struct tcb *, kernel_ulong_t len, kernel_ulong_t addr,
997 enum iov_decode, kernel_ulong_t data_size);
1000 decode_netlink(struct tcb *, int fd, kernel_ulong_t addr, kernel_ulong_t len);
1002 extern void tprint_open_modes(unsigned int);
1003 extern const char *sprint_open_modes(unsigned int);
1006 decode_seccomp_fprog(struct tcb *, kernel_ulong_t addr);
1009 print_seccomp_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
1012 decode_sock_fprog(struct tcb *, kernel_ulong_t addr);
1015 print_sock_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
1018 extern void print_struct_stat(struct tcb *, const struct strace_stat *const st);
1020 struct strace_statfs;
1021 struct strace_keyctl_kdf_params;
1024 print_struct_statfs(struct tcb *, kernel_ulong_t addr);
1027 print_struct_statfs64(struct tcb *, kernel_ulong_t addr, kernel_ulong_t size);
1030 fetch_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
1032 print_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
1034 extern const char *get_ifname(const unsigned int ifindex);
1035 extern void print_ifindex(unsigned int);
1037 extern void print_bpf_filter_code(const uint16_t code, bool extended);
1039 extern void qualify(const char *);
1040 extern unsigned int qual_flags(const unsigned int);
1042 # define DECL_IOCTL(name) \
1044 name ## _ioctl(struct tcb *, unsigned int request, kernel_ulong_t arg) \
1045 /* End of DECL_IOCTL definition. */
1051 DECL_IOCTL(inotify);
1061 DECL_IOCTL(watchdog);
1064 extern int decode_sg_io_v4(struct tcb *, const kernel_ulong_t arg);
1065 extern void print_evdev_ff_type(const kernel_ulong_t val);
1069 typedef bool (*netlink_decoder_t)(struct tcb *, const struct nlmsghdr *,
1070 kernel_ulong_t addr, unsigned int len);
1072 # define DECL_NETLINK(name) \
1074 decode_netlink_ ## name(struct tcb *, const struct nlmsghdr *, \
1075 kernel_ulong_t addr, unsigned int len) \
1076 /* End of DECL_NETLINK definition. */
1078 DECL_NETLINK(crypto);
1079 DECL_NETLINK(netfilter);
1080 DECL_NETLINK(route);
1081 DECL_NETLINK(selinux);
1082 DECL_NETLINK(sock_diag);
1085 decode_netlink_kobject_uevent(struct tcb *, kernel_ulong_t addr,
1086 kernel_ulong_t len);
1088 extern int ts_nz(const struct timespec *);
1089 extern int ts_cmp(const struct timespec *, const struct timespec *);
1090 extern double ts_float(const struct timespec *);
1091 extern void ts_add(struct timespec *, const struct timespec *, const struct timespec *);
1092 extern void ts_sub(struct timespec *, const struct timespec *, const struct timespec *);
1093 extern void ts_mul(struct timespec *, const struct timespec *, int);
1094 extern void ts_div(struct timespec *, const struct timespec *, int);
1095 extern const struct timespec *ts_min(const struct timespec *, const struct timespec *);
1096 extern const struct timespec *ts_max(const struct timespec *, const struct timespec *);
1097 extern int parse_ts(const char *s, struct timespec *t);
1099 # ifdef ENABLE_STACKTRACE
1100 extern void unwind_init(void);
1101 extern void unwind_tcb_init(struct tcb *);
1102 extern void unwind_tcb_fin(struct tcb *);
1103 extern void unwind_tcb_print(struct tcb *);
1104 extern void unwind_tcb_capture(struct tcb *);
1107 # ifdef HAVE_LINUX_KVM_H
1108 extern void kvm_run_structure_decoder_init(void);
1109 extern void kvm_vcpu_info_free(struct tcb *);
1113 printstrn(struct tcb *tcp, kernel_ulong_t addr, kernel_ulong_t len)
1115 return printstr_ex(tcp, addr, len, 0);
1119 printstr(struct tcb *tcp, kernel_ulong_t addr)
1121 return printstr_ex(tcp, addr, -1, QUOTE_0_TERMINATED);
1125 printflags64(const struct xlat *x, uint64_t flags, const char *dflt)
1127 return printflags_ex(flags, dflt, XLAT_STYLE_DEFAULT, x, NULL);
1131 printflags(const struct xlat *x, unsigned int flags, const char *dflt)
1133 return printflags64(x, flags, dflt);
1137 printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
1139 return printxvals(val, dflt, x, NULL);
1143 printxval(const struct xlat *x, const unsigned int val, const char *dflt)
1145 return printxvals(val, dflt, x, NULL);
1149 printxval64_u(const struct xlat *x, const uint64_t val, const char *dflt)
1151 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
1155 printxval_u(const struct xlat *x, const unsigned int val, const char *dflt)
1157 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
1161 printxval64_d(const struct xlat *x, const int64_t val, const char *dflt)
1163 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
1167 printxval_d(const struct xlat *x, const int val, const char *dflt)
1169 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
1173 tprint_iov(struct tcb *tcp, kernel_ulong_t len, kernel_ulong_t addr,
1174 enum iov_decode decode_iov)
1176 tprint_iov_upto(tcp, len, addr, decode_iov, -1);
1179 # if HAVE_ARCH_TIME32_SYSCALLS
1180 extern bool print_timespec32_data_size(const void *arg, size_t size);
1181 extern bool print_timespec32_array_data_size(const void *arg,
1184 extern int print_timespec32(struct tcb *, kernel_ulong_t);
1185 extern const char *sprint_timespec32(struct tcb *, kernel_ulong_t);
1186 extern int print_timespec32_utime_pair(struct tcb *, kernel_ulong_t);
1187 extern int print_itimerspec32(struct tcb *, kernel_ulong_t);
1188 extern int print_timex32(struct tcb *, kernel_ulong_t);
1189 # endif /* HAVE_ARCH_TIME32_SYSCALLS */
1191 extern bool print_timespec64_data_size(const void *arg, size_t size);
1192 extern bool print_timespec64_array_data_size(const void *arg,
1195 extern int print_timespec64(struct tcb *, kernel_ulong_t);
1196 extern const char *sprint_timespec64(struct tcb *, kernel_ulong_t);
1197 extern int print_timespec64_utime_pair(struct tcb *, kernel_ulong_t);
1198 extern int print_itimerspec64(struct tcb *, kernel_ulong_t);
1200 extern bool print_timeval64_data_size(const void *arg, size_t size);
1202 extern int print_timex64(struct tcb *, kernel_ulong_t);
1205 extern int print_sparc64_timex(struct tcb *, kernel_ulong_t);
1210 int tv_sec, tv_usec;
1213 extern void print_timeval32_t(const timeval32_t *);
1214 extern void printrusage32(struct tcb *, kernel_ulong_t);
1215 extern const char *sprint_timeval32(struct tcb *, kernel_ulong_t addr);
1216 extern int print_timeval32(struct tcb *, kernel_ulong_t addr);
1217 extern int print_timeval32_utimes(struct tcb *, kernel_ulong_t addr);
1218 extern int print_itimerval32(struct tcb *, kernel_ulong_t addr);
1221 # ifdef HAVE_STRUCT_USER_DESC
1223 * Filter what to print from the point of view of the get_thread_area syscall.
1224 * Kernel copies only entry_number field at first and then tries to write the
1227 enum user_desc_print_filter {
1228 /* Print the "entering" part of struct user_desc - entry_number. */
1229 USER_DESC_ENTERING = 1,
1230 /* Print the "exiting" part of the structure. */
1231 USER_DESC_EXITING = 2,
1232 USER_DESC_BOTH = USER_DESC_ENTERING | USER_DESC_EXITING,
1235 extern void print_user_desc(struct tcb *, kernel_ulong_t addr,
1236 enum user_desc_print_filter filter);
1239 /* Strace log generation machinery.
1241 * printing_tcp: tcb which has incomplete line being printed right now.
1242 * NULL if last line has been completed ('\n'-terminated).
1243 * printleader(tcp) examines it, finishes incomplete line if needed,
1244 * the sets it to tcp.
1245 * line_ended() clears printing_tcp and resets ->curcol = 0.
1246 * tcp->curcol == 0 check is also used to detect completeness
1247 * of last line, since in -ff mode just checking printing_tcp for NULL
1250 * If you change this code, test log generation in both -f and -ff modes
1252 * strace -oLOG -f[f] test/threaded_execve
1253 * strace -oLOG -f[f] test/sigkill_rain
1254 * strace -oLOG -f[f] -p "`pidof web_browser`"
1256 extern struct tcb *printing_tcp;
1257 extern void printleader(struct tcb *);
1258 extern void line_ended(void);
1259 extern void tabto(void);
1260 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1261 extern void tprints(const char *str);
1262 extern void tprintf_comment(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1263 extern void tprints_comment(const char *str);
1266 * Staging output for status qualifier.
1268 extern FILE *strace_open_memstream(struct tcb *tcp);
1269 extern void strace_close_memstream(struct tcb *tcp, bool publish);
1272 printaddr_comment(const kernel_ulong_t addr)
1274 tprintf_comment("%#llx", (unsigned long long) addr);
1278 * When u64 is interpreted by the kernel as an address, there is a difference
1279 * in behaviour between 32-bit and 64-bit kernel in the way u64_to_user_ptr
1280 * works (32-bit kernel trims higher bits during conversion which may result
1281 * to a valid address). Since 32-bit strace cannot figure out what kind of
1282 * kernel the tracee is running on, it has to account for both possibilities.
1284 # if CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL
1287 * Print raw 64-bit value as an address if it's too big to fit in strace's
1291 print_big_u64_addr(const uint64_t addr)
1293 if (sizeof(kernel_long_t) < 8 && addr > max_kaddr()) {
1298 # else /* !CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1299 # define print_big_u64_addr(addr_) ((void) 0)
1300 # endif /* CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1302 # if SIZEOF_KERNEL_LONG_T > 4 \
1303 && (SIZEOF_LONG < SIZEOF_KERNEL_LONG_T || !defined(current_wordsize))
1304 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 1
1306 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 0
1309 # define DECL_PRINTNUM(name) \
1311 printnum_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1312 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1313 /* End of DECL_PRINTNUM definition. */
1315 DECL_PRINTNUM(short);
1317 DECL_PRINTNUM(int64);
1318 # undef DECL_PRINTNUM
1320 # define DECL_PRINTNUM_ADDR(name) \
1322 printnum_addr_ ## name(struct tcb *, kernel_ulong_t addr) \
1323 /* End of DECL_PRINTNUM_ADDR definition. */
1325 DECL_PRINTNUM_ADDR(int);
1326 DECL_PRINTNUM_ADDR(int64);
1327 # undef DECL_PRINTNUM_ADDR
1330 printnum_fd(struct tcb *, kernel_ulong_t addr);
1333 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1335 return dispatch_wordsize(printnum_int64, printnum_int,
1336 tcp, addr, opt_wordsize("%" PRId64, "%d"));
1340 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1342 return dispatch_wordsize(printnum_int64, printnum_int,
1343 tcp, addr, opt_wordsize("%" PRIu64, "%u"));
1347 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1349 return dispatch_wordsize(printnum_addr_int64, printnum_addr_int,
1354 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1356 return dispatch_klongsize(printnum_addr_int64, printnum_addr_int,
1361 # define DECL_PRINTPAIR(name) \
1363 printpair_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1364 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1365 /* End of DECL_PRINTPAIR definition. */
1367 DECL_PRINTPAIR(int);
1368 DECL_PRINTPAIR(int64);
1369 # undef DECL_PRINTPAIR
1371 static inline kernel_long_t
1372 truncate_klong_to_current_wordsize(const kernel_long_t v)
1374 # if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1375 if (current_wordsize < sizeof(v)) {
1384 static inline kernel_ulong_t
1385 truncate_kulong_to_current_wordsize(const kernel_ulong_t v)
1387 # if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1388 if (current_wordsize < sizeof(v)) {
1389 return (unsigned int) v;
1398 * Cast a pointer or a pointer-sized integer to kernel_ulong_t.
1400 # define ptr_to_kulong(v) ((kernel_ulong_t) (unsigned long) (v))
1403 * Zero-extend a signed integer type to unsigned long long.
1405 # define zero_extend_signed_to_ull(v) \
1406 (sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
1407 sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
1408 sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
1409 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
1410 (unsigned long long) (v))
1413 * Sign-extend an unsigned integer type to long long.
1415 # define sign_extend_unsigned_to_ll(v) \
1416 (sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
1417 sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
1418 sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
1419 sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
1423 * Computes the popcount of a vector of 32-bit values.
1425 static inline unsigned int
1426 popcount32(const uint32_t *a, unsigned int size)
1428 unsigned int count = 0;
1430 for (; size; ++a, --size) {
1433 # ifdef HAVE___BUILTIN_POPCOUNT
1434 count += __builtin_popcount(x);
1444 extern const char *const errnoent[];
1445 extern const char *const signalent[];
1446 extern const unsigned int nerrnos;
1447 extern const unsigned int nsignals;
1449 extern const struct_sysent sysent0[];
1450 extern const struct_ioctlent ioctlent0[];
1452 extern const char *const personality_names[];
1453 /* Personality designators to be used for specifying personality */
1454 extern const char *const personality_designators[];
1456 # if SUPPORTED_PERSONALITIES > 1
1457 extern const struct_sysent *sysent;
1458 extern const struct_ioctlent *ioctlent;
1460 # define sysent sysent0
1461 # define ioctlent ioctlent0
1464 extern unsigned nsyscalls;
1465 extern unsigned nioctlents;
1467 extern const unsigned int nsyscall_vec[SUPPORTED_PERSONALITIES];
1468 extern const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES];
1469 extern struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
1471 # ifdef IN_MPERS_BOOTSTRAP
1472 /* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
1473 # define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
1474 # else /* !IN_MPERS_BOOTSTRAP */
1475 # if SUPPORTED_PERSONALITIES > 1
1476 # include "printers.h"
1478 # include "native_printer_decls.h"
1480 # define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
1481 # endif /* !IN_MPERS_BOOTSTRAP */
1483 /* Checks that sysent[scno] is not out of range. */
1485 scno_in_range(kernel_ulong_t scno)
1487 return scno < nsyscalls;
1491 * Checks whether scno is not out of range,
1492 * its corresponding sysent[scno].sys_func is non-NULL,
1493 * and its sysent[scno].sys_flags has no TRACE_INDIRECT_SUBCALL flag set.
1496 scno_is_valid(kernel_ulong_t scno)
1498 return scno_in_range(scno)
1499 && sysent[scno].sys_func
1500 && !(sysent[scno].sys_flags & TRACE_INDIRECT_SUBCALL);
1503 # define MPERS_FUNC_NAME__(prefix, name) prefix ## name
1504 # define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
1505 # define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
1507 # define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
1509 # define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
1511 #endif /* !STRACE_DEFS_H */