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 unsigned long u_error; /* Error code */
255 kernel_ulong_t scno; /* System call number */
256 kernel_ulong_t u_arg[MAX_ARGS]; /* System call arguments */
257 kernel_long_t u_rval; /* Return value */
258 # if SUPPORTED_PERSONALITIES > 1
259 unsigned int currpers; /* Personality at the time of scno update */
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 # define FLAG_(name_) name_ = 1 << name_##_BIT
780 enum xlat_style_private_flags {
782 FLAG_(PAF_PRINT_INDICES),
783 FLAG_(PAF_ARRAY_TRUNCATED),
786 FLAG_(PXF_DEFAULT_STR),
791 /** Print a value in accordance with xlat formatting settings. */
792 extern void print_xlat_ex(uint64_t val, const char *str, enum xlat_style style);
793 # define print_xlat(val_) \
794 print_xlat_ex((val_), #val_, XLAT_STYLE_DEFAULT)
795 # define print_xlat32(val_) \
796 print_xlat_ex((uint32_t) (val_), #val_, XLAT_STYLE_DEFAULT)
797 # define print_xlat_u(val_) \
798 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_U)
799 # define print_xlat_d(val_) \
800 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_D)
802 extern int printargs(struct tcb *);
803 extern int printargs_u(struct tcb *);
804 extern int printargs_d(struct tcb *);
806 extern int printflags_ex(uint64_t flags, const char *dflt,
807 enum xlat_style, const struct xlat *, ...)
809 extern const char *sprintflags_ex(const char *prefix, const struct xlat *,
810 uint64_t flags, char sep, enum xlat_style);
812 static inline const char *
813 sprintflags(const char *prefix, const struct xlat *xlat, uint64_t flags)
815 return sprintflags_ex(prefix, xlat, flags, '\0', XLAT_STYLE_DEFAULT);
818 extern const char *sprinttime(long long sec);
819 extern const char *sprinttime_nsec(long long sec, unsigned long long nsec);
820 extern const char *sprinttime_usec(long long sec, unsigned long long usec);
822 # ifndef MAX_ADDR_LEN
823 # define MAX_ADDR_LEN 32
826 extern const char *sprint_mac_addr(const uint8_t addr[], size_t size);
827 extern void print_mac_addr(const char *prefix,
828 const uint8_t addr[], size_t size);
830 extern const char *sprint_hwaddr(const uint8_t addr[], size_t size,
832 extern void print_hwaddr(const char *prefix,
833 const uint8_t addr[], size_t size, uint32_t devtype);
835 extern void print_uuid(const unsigned char *uuid);
837 extern void print_symbolic_mode_t(unsigned int);
838 extern void print_numeric_umode_t(unsigned short);
839 extern void print_numeric_long_umask(unsigned long);
840 extern void print_dev_t(unsigned long long dev);
841 extern void print_kernel_version(unsigned long version);
842 extern void print_abnormal_hi(kernel_ulong_t);
843 extern void print_ioprio(unsigned int ioprio);
845 extern bool print_int32_array_member(struct tcb *, void *elem_buf,
846 size_t elem_size, void *data);
847 extern bool print_uint32_array_member(struct tcb *, void *elem_buf,
848 size_t elem_size, void *data);
849 extern bool print_uint64_array_member(struct tcb *, void *elem_buf,
850 size_t elem_size, void *data);
851 extern bool print_xint32_array_member(struct tcb *, void *elem_buf,
852 size_t elem_size, void *data);
853 extern bool print_xint64_array_member(struct tcb *, void *elem_buf,
854 size_t elem_size, void *data);
857 print_xlong_array_member(struct tcb *tcp, void *elem_buf, size_t elem_size,
860 return dispatch_wordsize(print_xint64_array_member,
861 print_xint32_array_member,
862 tcp, elem_buf, elem_size, data);
866 typedef bool (*tfetch_mem_fn)(struct tcb *, kernel_ulong_t addr,
867 unsigned int size, void *dest);
868 typedef bool (*print_fn)(struct tcb *, void *elem_buf,
869 size_t elem_size, void *opaque_data);
870 typedef int (*print_obj_by_addr_fn)(struct tcb *, kernel_ulong_t);
871 typedef const char * (*sprint_obj_by_addr_fn)(struct tcb *, kernel_ulong_t);
875 * Array printing function with over-engineered interface.
877 * @param start_addr If tfetch_mem_fn is non-NULL: address in tracee's
878 * memory where the start of the array is located.
879 * If tfetch_mem_fn is NULL: ignored.
880 * @param nmemb Number of elements in array.
881 * @param elem_buf If tfetch_mem_fn is non-NULL: a buffer where each
882 * element fetched by tfetch_mem_fn is stored.
883 * If tfetch_mem_fn is NULL: address of the start of
884 * the array in local memory.
885 * @param elem_size Size (in bytes) of each element in the array.
886 * @param tfetch_mem_fn Fetching function. If NULL, then elem_buf is treated
887 * as local array of nmemb members elem_size each;
888 * start_addr is ignored.
889 * @param print_func Element printing callback.
890 * @param opaque_data A value that is unconditionally passed to print_func
891 * in opaque_data argument.
892 * @param flags Combination of xlat style settings and additional
893 * flags from enum print_array_flags.
894 * @param index_xlat Xlat array that is used for printing indices.
895 * @param index_xlat_size The size of xlat array.
896 * @param index_dflt Default string for the values not found
900 print_array_ex(struct tcb *,
901 kernel_ulong_t start_addr,
905 tfetch_mem_fn tfetch_mem_func,
909 const struct xlat *index_xlat,
910 const char *index_dflt);
912 /** Print an array from tracee's memory without any index printing features. */
914 print_array(struct tcb *const tcp,
915 const kernel_ulong_t start_addr,
917 void *const elem_buf,
918 const size_t elem_size,
919 tfetch_mem_fn tfetch_mem_func,
921 void *const opaque_data)
923 return print_array_ex(tcp, start_addr, nmemb, elem_buf, elem_size,
924 tfetch_mem_func, print_func, opaque_data,
928 /** Shorthand for printing local arrays. */
930 print_local_array(struct tcb *tcp,
933 void *const elem_buf,
934 const size_t elem_size,
936 void *const opaque_data,
939 return print_array_ex(tcp, (uintptr_t) start_addr , nmemb,
940 elem_buf, elem_size, NULL, print_func,
941 opaque_data, flags, NULL, NULL);
944 extern kernel_ulong_t *
945 fetch_indirect_syscall_args(struct tcb *, kernel_ulong_t addr, unsigned int n_args);
948 dumpiov_in_msghdr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t data_size);
951 dumpiov_in_mmsghdr(struct tcb *, kernel_ulong_t addr);
954 dumpiov_upto(struct tcb *, int len, kernel_ulong_t addr, kernel_ulong_t data_size);
957 dumpstr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
960 printstr_ex(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len,
961 unsigned int user_style);
964 printpathn(struct tcb *, kernel_ulong_t addr, unsigned int n);
967 printpath(struct tcb *, kernel_ulong_t addr);
969 # define TIMESPEC_TEXT_BUFSIZE \
970 (sizeof(long long) * 3 * 2 + sizeof("{tv_sec=-, tv_nsec=}"))
971 extern void printfd(struct tcb *, int);
972 extern void print_sockaddr(const void *sa, int len);
974 print_inet_addr(int af, const void *addr, unsigned int len, const char *var_name);
976 decode_inet_addr(struct tcb *, kernel_ulong_t addr,
977 unsigned int len, int family, const char *var_name);
978 extern void print_ax25_addr(const void /* ax25_address */ *addr);
979 extern void print_x25_addr(const void /* struct x25_address */ *addr);
980 extern const char *get_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
981 extern bool print_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
982 extern void print_dirfd(struct tcb *, int);
985 decode_sockaddr(struct tcb *, kernel_ulong_t addr, int addrlen);
987 extern void printuid(const char *, const unsigned int);
990 print_sigset_addr_len(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
992 print_sigset_addr(struct tcb *, kernel_ulong_t addr);
994 extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
995 # define tprintsigmask_addr(prefix, mask) \
996 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
997 extern void printsignal(int);
1000 tprint_iov_upto(struct tcb *, kernel_ulong_t len, kernel_ulong_t addr,
1001 enum iov_decode, kernel_ulong_t data_size);
1004 decode_netlink(struct tcb *, int fd, kernel_ulong_t addr, kernel_ulong_t len);
1006 extern void tprint_open_modes(unsigned int);
1007 extern const char *sprint_open_modes(unsigned int);
1010 decode_seccomp_fprog(struct tcb *, kernel_ulong_t addr);
1013 print_seccomp_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
1016 decode_sock_fprog(struct tcb *, kernel_ulong_t addr);
1019 print_sock_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
1022 extern void print_struct_stat(struct tcb *, const struct strace_stat *const st);
1024 struct strace_statfs;
1025 struct strace_keyctl_kdf_params;
1028 print_struct_statfs(struct tcb *, kernel_ulong_t addr);
1031 print_struct_statfs64(struct tcb *, kernel_ulong_t addr, kernel_ulong_t size);
1034 fetch_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
1036 print_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
1038 extern const char *get_ifname(const unsigned int ifindex);
1039 extern void print_ifindex(unsigned int);
1041 extern void print_bpf_filter_code(const uint16_t code, bool extended);
1043 extern void qualify(const char *);
1044 extern unsigned int qual_flags(const unsigned int);
1046 # define DECL_IOCTL(name) \
1048 name ## _ioctl(struct tcb *, unsigned int request, kernel_ulong_t arg) \
1049 /* End of DECL_IOCTL definition. */
1055 DECL_IOCTL(inotify);
1065 DECL_IOCTL(watchdog);
1068 extern int decode_sg_io_v4(struct tcb *, const kernel_ulong_t arg);
1069 extern void print_evdev_ff_type(const kernel_ulong_t val);
1073 typedef bool (*netlink_decoder_t)(struct tcb *, const struct nlmsghdr *,
1074 kernel_ulong_t addr, unsigned int len);
1076 # define DECL_NETLINK(name) \
1078 decode_netlink_ ## name(struct tcb *, const struct nlmsghdr *, \
1079 kernel_ulong_t addr, unsigned int len) \
1080 /* End of DECL_NETLINK definition. */
1082 DECL_NETLINK(crypto);
1083 DECL_NETLINK(netfilter);
1084 DECL_NETLINK(route);
1085 DECL_NETLINK(selinux);
1086 DECL_NETLINK(sock_diag);
1089 decode_netlink_kobject_uevent(struct tcb *, kernel_ulong_t addr,
1090 kernel_ulong_t len);
1092 extern int ts_nz(const struct timespec *);
1093 extern int ts_cmp(const struct timespec *, const struct timespec *);
1094 extern double ts_float(const struct timespec *);
1095 extern void ts_add(struct timespec *, const struct timespec *, const struct timespec *);
1096 extern void ts_sub(struct timespec *, const struct timespec *, const struct timespec *);
1097 extern void ts_mul(struct timespec *, const struct timespec *, int);
1098 extern void ts_div(struct timespec *, const struct timespec *, int);
1099 extern const struct timespec *ts_min(const struct timespec *, const struct timespec *);
1100 extern const struct timespec *ts_max(const struct timespec *, const struct timespec *);
1101 extern int parse_ts(const char *s, struct timespec *t);
1103 # ifdef ENABLE_STACKTRACE
1104 extern void unwind_init(void);
1105 extern void unwind_tcb_init(struct tcb *);
1106 extern void unwind_tcb_fin(struct tcb *);
1107 extern void unwind_tcb_print(struct tcb *);
1108 extern void unwind_tcb_capture(struct tcb *);
1111 # ifdef HAVE_LINUX_KVM_H
1112 extern void kvm_run_structure_decoder_init(void);
1113 extern void kvm_vcpu_info_free(struct tcb *);
1117 printstrn(struct tcb *tcp, kernel_ulong_t addr, kernel_ulong_t len)
1119 return printstr_ex(tcp, addr, len, 0);
1123 printstr(struct tcb *tcp, kernel_ulong_t addr)
1125 return printstr_ex(tcp, addr, -1, QUOTE_0_TERMINATED);
1129 printflags64(const struct xlat *x, uint64_t flags, const char *dflt)
1131 return printflags_ex(flags, dflt, XLAT_STYLE_DEFAULT, x, NULL);
1135 printflags(const struct xlat *x, unsigned int flags, const char *dflt)
1137 return printflags64(x, flags, dflt);
1141 printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
1143 return printxvals(val, dflt, x, NULL);
1147 printxval(const struct xlat *x, const unsigned int val, const char *dflt)
1149 return printxvals(val, dflt, x, NULL);
1153 printxval64_u(const struct xlat *x, const uint64_t val, const char *dflt)
1155 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
1159 printxval_u(const struct xlat *x, const unsigned int val, const char *dflt)
1161 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
1165 printxval64_d(const struct xlat *x, const int64_t val, const char *dflt)
1167 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
1171 printxval_d(const struct xlat *x, const int val, const char *dflt)
1173 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
1177 tprint_iov(struct tcb *tcp, kernel_ulong_t len, kernel_ulong_t addr,
1178 enum iov_decode decode_iov)
1180 tprint_iov_upto(tcp, len, addr, decode_iov, -1);
1183 # if HAVE_ARCH_TIME32_SYSCALLS
1184 extern bool print_timespec32_data_size(const void *arg, size_t size);
1185 extern bool print_timespec32_array_data_size(const void *arg,
1188 extern int print_timespec32(struct tcb *, kernel_ulong_t);
1189 extern const char *sprint_timespec32(struct tcb *, kernel_ulong_t);
1190 extern int print_timespec32_utime_pair(struct tcb *, kernel_ulong_t);
1191 extern int print_itimerspec32(struct tcb *, kernel_ulong_t);
1192 extern int print_timex32(struct tcb *, kernel_ulong_t);
1193 # endif /* HAVE_ARCH_TIME32_SYSCALLS */
1195 extern bool print_timespec64_data_size(const void *arg, size_t size);
1196 extern bool print_timespec64_array_data_size(const void *arg,
1199 extern int print_timespec64(struct tcb *, kernel_ulong_t);
1200 extern const char *sprint_timespec64(struct tcb *, kernel_ulong_t);
1201 extern int print_timespec64_utime_pair(struct tcb *, kernel_ulong_t);
1202 extern int print_itimerspec64(struct tcb *, kernel_ulong_t);
1204 extern bool print_timeval64_data_size(const void *arg, size_t size);
1206 extern int print_timex64(struct tcb *, kernel_ulong_t);
1209 extern int print_sparc64_timex(struct tcb *, kernel_ulong_t);
1214 int tv_sec, tv_usec;
1217 extern void print_timeval32_t(const timeval32_t *);
1218 extern void printrusage32(struct tcb *, kernel_ulong_t);
1219 extern const char *sprint_timeval32(struct tcb *, kernel_ulong_t addr);
1220 extern int print_timeval32(struct tcb *, kernel_ulong_t addr);
1221 extern int print_timeval32_utimes(struct tcb *, kernel_ulong_t addr);
1222 extern int print_itimerval32(struct tcb *, kernel_ulong_t addr);
1225 # ifdef HAVE_STRUCT_USER_DESC
1227 * Filter what to print from the point of view of the get_thread_area syscall.
1228 * Kernel copies only entry_number field at first and then tries to write the
1231 enum user_desc_print_filter {
1232 /* Print the "entering" part of struct user_desc - entry_number. */
1233 USER_DESC_ENTERING = 1,
1234 /* Print the "exiting" part of the structure. */
1235 USER_DESC_EXITING = 2,
1236 USER_DESC_BOTH = USER_DESC_ENTERING | USER_DESC_EXITING,
1239 extern void print_user_desc(struct tcb *, kernel_ulong_t addr,
1240 enum user_desc_print_filter filter);
1243 /* Strace log generation machinery.
1245 * printing_tcp: tcb which has incomplete line being printed right now.
1246 * NULL if last line has been completed ('\n'-terminated).
1247 * printleader(tcp) examines it, finishes incomplete line if needed,
1248 * the sets it to tcp.
1249 * line_ended() clears printing_tcp and resets ->curcol = 0.
1250 * tcp->curcol == 0 check is also used to detect completeness
1251 * of last line, since in -ff mode just checking printing_tcp for NULL
1254 * If you change this code, test log generation in both -f and -ff modes
1256 * strace -oLOG -f[f] test/threaded_execve
1257 * strace -oLOG -f[f] test/sigkill_rain
1258 * strace -oLOG -f[f] -p "`pidof web_browser`"
1260 extern struct tcb *printing_tcp;
1261 extern void printleader(struct tcb *);
1262 extern void line_ended(void);
1263 extern void tabto(void);
1264 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1265 extern void tprints(const char *str);
1266 extern void tprintf_comment(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1267 extern void tprints_comment(const char *str);
1270 * Staging output for status qualifier.
1272 extern FILE *strace_open_memstream(struct tcb *tcp);
1273 extern void strace_close_memstream(struct tcb *tcp, bool publish);
1276 printaddr_comment(const kernel_ulong_t addr)
1278 tprintf_comment("%#llx", (unsigned long long) addr);
1282 * When u64 is interpreted by the kernel as an address, there is a difference
1283 * in behaviour between 32-bit and 64-bit kernel in the way u64_to_user_ptr
1284 * works (32-bit kernel trims higher bits during conversion which may result
1285 * to a valid address). Since 32-bit strace cannot figure out what kind of
1286 * kernel the tracee is running on, it has to account for both possibilities.
1288 # if CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL
1291 * Print raw 64-bit value as an address if it's too big to fit in strace's
1295 print_big_u64_addr(const uint64_t addr)
1297 if (sizeof(kernel_long_t) < 8 && addr > max_kaddr()) {
1302 # else /* !CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1303 # define print_big_u64_addr(addr_) ((void) 0)
1304 # endif /* CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1306 # if SIZEOF_KERNEL_LONG_T > 4 \
1307 && (SIZEOF_LONG < SIZEOF_KERNEL_LONG_T || !defined(current_wordsize))
1308 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 1
1310 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 0
1313 # define DECL_PRINTNUM(name) \
1315 printnum_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1316 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1317 /* End of DECL_PRINTNUM definition. */
1319 DECL_PRINTNUM(short);
1321 DECL_PRINTNUM(int64);
1322 # undef DECL_PRINTNUM
1324 # define DECL_PRINTNUM_ADDR(name) \
1326 printnum_addr_ ## name(struct tcb *, kernel_ulong_t addr) \
1327 /* End of DECL_PRINTNUM_ADDR definition. */
1329 DECL_PRINTNUM_ADDR(int);
1330 DECL_PRINTNUM_ADDR(int64);
1331 # undef DECL_PRINTNUM_ADDR
1334 printnum_fd(struct tcb *, kernel_ulong_t addr);
1337 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1339 return dispatch_wordsize(printnum_int64, printnum_int,
1340 tcp, addr, opt_wordsize("%" PRId64, "%d"));
1344 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1346 return dispatch_wordsize(printnum_int64, printnum_int,
1347 tcp, addr, opt_wordsize("%" PRIu64, "%u"));
1351 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1353 return dispatch_wordsize(printnum_addr_int64, printnum_addr_int,
1358 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1360 return dispatch_klongsize(printnum_addr_int64, printnum_addr_int,
1365 # define DECL_PRINTPAIR(name) \
1367 printpair_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1368 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1369 /* End of DECL_PRINTPAIR definition. */
1371 DECL_PRINTPAIR(int);
1372 DECL_PRINTPAIR(int64);
1373 # undef DECL_PRINTPAIR
1375 static inline kernel_long_t
1376 truncate_klong_to_current_wordsize(const kernel_long_t v)
1378 # if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1379 if (current_wordsize < sizeof(v)) {
1388 static inline kernel_ulong_t
1389 truncate_kulong_to_current_wordsize(const kernel_ulong_t v)
1391 # if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1392 if (current_wordsize < sizeof(v)) {
1393 return (unsigned int) v;
1402 * Cast a pointer or a pointer-sized integer to kernel_ulong_t.
1404 # define ptr_to_kulong(v) ((kernel_ulong_t) (unsigned long) (v))
1407 * Zero-extend a signed integer type to unsigned long long.
1409 # define zero_extend_signed_to_ull(v) \
1410 (sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
1411 sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
1412 sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
1413 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
1414 (unsigned long long) (v))
1417 * Sign-extend an unsigned integer type to long long.
1419 # define sign_extend_unsigned_to_ll(v) \
1420 (sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
1421 sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
1422 sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
1423 sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
1427 * Computes the popcount of a vector of 32-bit values.
1429 static inline unsigned int
1430 popcount32(const uint32_t *a, unsigned int size)
1432 unsigned int count = 0;
1434 for (; size; ++a, --size) {
1437 # ifdef HAVE___BUILTIN_POPCOUNT
1438 count += __builtin_popcount(x);
1448 extern const char *const errnoent[];
1449 extern const char *const signalent[];
1450 extern const unsigned int nerrnos;
1451 extern const unsigned int nsignals;
1453 extern const struct_sysent sysent0[];
1454 extern const struct_ioctlent ioctlent0[];
1456 extern const char *const personality_names[];
1457 /* Personality designators to be used for specifying personality */
1458 extern const char *const personality_designators[];
1460 # if SUPPORTED_PERSONALITIES > 1
1461 extern const struct_sysent *sysent;
1462 extern const struct_ioctlent *ioctlent;
1464 # define sysent sysent0
1465 # define ioctlent ioctlent0
1468 extern unsigned nsyscalls;
1469 extern unsigned nioctlents;
1471 extern const unsigned int nsyscall_vec[SUPPORTED_PERSONALITIES];
1472 extern const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES];
1473 extern struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
1475 # ifdef IN_MPERS_BOOTSTRAP
1476 /* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
1477 # define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
1478 # else /* !IN_MPERS_BOOTSTRAP */
1479 # if SUPPORTED_PERSONALITIES > 1
1480 # include "printers.h"
1482 # include "native_printer_decls.h"
1484 # define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
1485 # endif /* !IN_MPERS_BOOTSTRAP */
1487 /* Checks that sysent[scno] is not out of range. */
1489 scno_in_range(kernel_ulong_t scno)
1491 return scno < nsyscalls;
1495 * Checks whether scno is not out of range,
1496 * its corresponding sysent[scno].sys_func is non-NULL,
1497 * and its sysent[scno].sys_flags has no TRACE_INDIRECT_SUBCALL flag set.
1500 scno_is_valid(kernel_ulong_t scno)
1502 return scno_in_range(scno)
1503 && sysent[scno].sys_func
1504 && !(sysent[scno].sys_flags & TRACE_INDIRECT_SUBCALL);
1507 # define MPERS_FUNC_NAME__(prefix, name) prefix ## name
1508 # define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
1509 # define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
1511 # define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
1513 # define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
1515 #endif /* !STRACE_DEFS_H */