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) 2001-2018 The strace developers.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 #include <sys/types.h>
47 /* Open-coding isprint(ch) et al proved more efficient than calling
48 * generalized libc interface. We don't *want* to do non-ASCII anyway.
50 /* #include <ctype.h> */
56 #include "arch_defs.h"
57 #include "error_prints.h"
58 #include "gcc_compat.h"
59 #include "kernel_types.h"
61 #include "mpers_type.h"
62 #include "string_to_uint.h"
67 const char *strerror(int);
70 /* Some libc have stpcpy, some don't. Sigh...
71 * Roll our private implementation...
74 #define stpcpy strace_stpcpy
75 extern char *stpcpy(char *dst, const char *src);
78 /* Glibc has an efficient macro for sigemptyset
79 * (it just does one or two assignments of 0 to internal vector of longs).
81 #if defined(__GLIBC__) && defined(__sigemptyset) && !defined(sigemptyset)
82 # define sigemptyset __sigemptyset
85 /* Configuration section */
86 #ifndef DEFAULT_STRLEN
87 /* default maximum # of bytes printed in `printstr', change with -s switch */
88 # define DEFAULT_STRLEN 32
90 #ifndef DEFAULT_ACOLUMN
91 # define DEFAULT_ACOLUMN 40 /* default alignment column for results */
94 * Maximum number of args to a syscall.
96 * Make sure that all entries in all syscallent.h files have nargs <= MAX_ARGS!
97 * linux/<ARCH>/syscallent*.h:
98 * all have nargs <= 6 except mips o32 which has nargs <= 7.
101 # ifdef LINUX_MIPSO32
107 /* default sorting method for call profiling */
108 #ifndef DEFAULT_SORTBY
109 # define DEFAULT_SORTBY "time"
112 /* To force NOMMU build, set to 1 */
113 #define NOMMU_SYSTEM 0
116 # define ERESTARTSYS 512
118 #ifndef ERESTARTNOINTR
119 # define ERESTARTNOINTR 513
121 #ifndef ERESTARTNOHAND
122 # define ERESTARTNOHAND 514
124 #ifndef ERESTART_RESTARTBLOCK
125 # define ERESTART_RESTARTBLOCK 516
128 #define PERSONALITY0_WORDSIZE SIZEOF_LONG
129 #define PERSONALITY0_KLONGSIZE SIZEOF_KERNEL_LONG_T
130 #define PERSONALITY0_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
131 #define PERSONALITY0_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
133 #if SUPPORTED_PERSONALITIES > 1
134 # define PERSONALITY1_WORDSIZE 4
135 # define PERSONALITY1_KLONGSIZE PERSONALITY1_WORDSIZE
138 #if SUPPORTED_PERSONALITIES > 2
139 # define PERSONALITY2_WORDSIZE 4
140 # define PERSONALITY2_KLONGSIZE PERSONALITY0_KLONGSIZE
143 #if SUPPORTED_PERSONALITIES > 1 && defined HAVE_M32_MPERS
144 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "m32_printer_decls.h"
145 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "m32_printer_defs.h"
146 # define PERSONALITY1_INCLUDE_FUNCS "m32_funcs.h"
147 # define MPERS_m32_IOCTL_MACROS "ioctl_redefs1.h"
148 # define HAVE_PERSONALITY_1_MPERS 1
150 # define PERSONALITY1_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
151 # define PERSONALITY1_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
152 # define PERSONALITY1_INCLUDE_FUNCS "empty.h"
153 # define HAVE_PERSONALITY_1_MPERS 0
156 #if SUPPORTED_PERSONALITIES > 2 && defined HAVE_MX32_MPERS
157 # define PERSONALITY2_INCLUDE_FUNCS "mx32_funcs.h"
158 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "mx32_printer_decls.h"
159 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "mx32_printer_defs.h"
160 # define MPERS_mx32_IOCTL_MACROS "ioctl_redefs2.h"
161 # define HAVE_PERSONALITY_2_MPERS 1
163 # define PERSONALITY2_INCLUDE_PRINTERS_DECLS "native_printer_decls.h"
164 # define PERSONALITY2_INCLUDE_PRINTERS_DEFS "native_printer_defs.h"
165 # define PERSONALITY2_INCLUDE_FUNCS "empty.h"
166 # define HAVE_PERSONALITY_2_MPERS 0
169 #ifdef WORDS_BIGENDIAN
170 # define is_bigendian true
172 # define is_bigendian false
175 typedef struct ioctlent {
180 #define INJECT_F_SIGNAL 0x01
181 #define INJECT_F_ERROR 0x02
182 #define INJECT_F_RETVAL 0x04
183 #define INJECT_F_DELAY_ENTER 0x08
184 #define INJECT_F_DELAY_EXIT 0x10
187 uint8_t flags; /* 5 of 8 flags are used so far */
188 uint8_t signo; /* NSIG <= 128 */
189 uint16_t rval_idx; /* index in retval_vec */
190 uint16_t delay_idx; /* index in delay_data_vec */
196 struct inject_data data;
199 #define MAX_ERRNO_VALUE 4095
201 /* Trace Control Block */
203 int flags; /* See below for TCB_ values */
204 int pid; /* If 0, this tcb is free */
205 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
206 unsigned long u_error; /* Error code */
207 kernel_ulong_t scno; /* System call number */
208 kernel_ulong_t u_arg[MAX_ARGS]; /* System call arguments */
209 kernel_long_t u_rval; /* Return value */
210 #if SUPPORTED_PERSONALITIES > 1
211 unsigned int currpers; /* Personality at the time of scno update */
213 int sys_func_rval; /* Syscall entry parser's return value */
214 int curcol; /* Output column for this process */
215 FILE *outf; /* Output file for this process */
216 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
217 void *_priv_data; /* Private data for syscall decoding functions */
218 void (*_free_priv_data)(void *); /* Callback for freeing priv_data */
219 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
220 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
221 struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
222 struct timespec stime; /* System time usage as of last process wait */
223 struct timespec dtime; /* Delta for system time usage */
224 struct timespec etime; /* Syscall entry time */
225 struct timespec delay_expiration_time; /* When does the delay end */
227 struct mmap_cache_t *mmap_cache;
229 #ifdef ENABLE_STACKTRACE
231 struct unwind_queue_t *unwind_queue;
236 /* We have attached to this process, but did not see it stopping yet */
237 #define TCB_STARTUP 0x01
238 #define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
240 * Are we in system call entry or in syscall exit?
242 * This bit is set in syscall_entering_finish() and cleared in
243 * syscall_exiting_finish().
244 * Other stops which are possible directly after syscall entry (death, ptrace
245 * event stop) are handled without calling syscall_{entering,exiting}_*().
247 * Use entering(tcp) / exiting(tcp) to check this bit to make code more
250 #define TCB_INSYSCALL 0x04
251 #define TCB_ATTACHED 0x08 /* We attached to it already */
252 #define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */
253 #define TCB_FILTERED 0x20 /* This system call has been filtered out */
254 #define TCB_TAMPERED 0x40 /* A syscall has been tampered with */
255 #define TCB_HIDE_LOG 0x80 /* We should hide everything (until execve) */
256 #define TCB_SKIP_DETACH_ON_FIRST_EXEC 0x100 /* -b execve should skip detach on first execve */
257 #define TCB_GRABBED 0x200 /* We grab the process and can catch it
258 * in the middle of a syscall */
259 #define TCB_RECOVERING 0x400 /* We try to recover after detecting incorrect
260 * syscall entering/exiting state */
261 #define TCB_INJECT_DELAY_EXIT 0x800 /* Current syscall needs to be delayed
263 #define TCB_DELAYED 0x1000 /* Current syscall has been delayed */
265 /* qualifier flags */
266 #define QUAL_TRACE 0x001 /* this system call should be traced */
267 #define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
268 #define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
269 #define QUAL_RAW 0x008 /* print all args in hex for this syscall */
270 #define QUAL_INJECT 0x010 /* tamper with this system call on purpose */
272 #define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
274 #define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
275 #define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
276 #define syserror(tcp) ((tcp)->u_error != 0)
277 #define traced(tcp) ((tcp)->qual_flg & QUAL_TRACE)
278 #define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
279 #define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
280 #define raw(tcp) ((tcp)->qual_flg & QUAL_RAW)
281 #define inject(tcp) ((tcp)->qual_flg & QUAL_INJECT)
282 #define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
283 #define hide_log(tcp) ((tcp)->flags & TCB_HIDE_LOG)
284 #define syscall_tampered(tcp) ((tcp)->flags & TCB_TAMPERED)
285 #define recovering(tcp) ((tcp)->flags & TCB_RECOVERING)
286 #define inject_delay_exit(tcp) ((tcp)->flags & TCB_INJECT_DELAY_EXIT)
287 #define syscall_delayed(tcp) ((tcp)->flags & TCB_DELAYED)
291 extern const struct xlat addrfams[];
292 extern const struct xlat arp_hardware_types[];
293 extern const struct xlat at_flags[];
294 extern const struct xlat clocknames[];
295 extern const struct xlat dirent_types[];
297 /** Ethernet protocols list, sorted, defined in sockaddr.c. */
298 extern const struct xlat ethernet_protocols[];
299 /** Ethernet protocols array size without terminating record. */
300 extern const size_t ethernet_protocols_size;
302 extern const struct xlat evdev_abs[];
303 /** Number of elements in evdev_abs array without the terminating record. */
304 extern const size_t evdev_abs_size;
306 extern const struct xlat iffflags[];
307 extern const struct xlat inet_protocols[];
308 extern const struct xlat ip_type_of_services[];
309 extern const struct xlat ipc_private[];
310 extern const struct xlat msg_flags[];
311 extern const struct xlat netlink_protocols[];
312 extern const struct xlat nl_netfilter_msg_types[];
313 extern const struct xlat nl_route_types[];
314 extern const struct xlat open_access_modes[];
315 extern const struct xlat open_mode_flags[];
316 extern const struct xlat resource_flags[];
317 extern const struct xlat routing_scopes[];
318 extern const struct xlat routing_table_ids[];
319 extern const struct xlat routing_types[];
320 extern const struct xlat seccomp_filter_flags[];
321 extern const struct xlat seccomp_ret_action[];
322 extern const struct xlat setns_types[];
323 extern const struct xlat sg_io_info[];
324 extern const struct xlat socketlayers[];
325 extern const struct xlat socktypes[];
326 extern const struct xlat tcp_state_flags[];
327 extern const struct xlat tcp_states[];
328 extern const struct xlat whence_codes[];
330 /* Format of syscall return values */
331 #define RVAL_UDECIMAL 000 /* unsigned decimal format */
332 #define RVAL_HEX 001 /* hex format */
333 #define RVAL_OCTAL 002 /* octal format */
334 #define RVAL_FD 010 /* file descriptor */
335 #define RVAL_MASK 013 /* mask for these values */
337 #define RVAL_STR 020 /* Print `auxstr' field after return val */
338 #define RVAL_NONE 040 /* Print nothing */
340 #define RVAL_DECODED 0100 /* syscall decoding finished */
341 #define RVAL_IOCTL_DECODED 0200 /* ioctl sub-parser successfully decoded
344 #define IOCTL_NUMBER_UNKNOWN 0
345 #define IOCTL_NUMBER_HANDLED 1
346 #define IOCTL_NUMBER_STOP_LOOKUP 010
348 #define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL)
359 extern enum sock_proto get_proto_by_name(const char *);
372 extern cflag_t cflag;
375 extern bool count_wallclock;
376 extern unsigned int qflag;
377 extern bool not_failing_only;
378 extern unsigned int show_fd_path;
379 /* are we filtering traces based on paths? */
380 extern struct path_set {
381 const char **paths_selected;
385 #define tracing_paths (global_path_set.num_selected != 0)
386 extern unsigned xflag;
387 extern unsigned followfork;
388 #ifdef ENABLE_STACKTRACE
389 /* if this is true do the stack trace for every system call */
390 extern bool stack_trace_enabled;
392 extern unsigned ptrace_setoptions;
393 extern unsigned max_strlen;
394 extern unsigned os_release;
395 #undef KERNEL_VERSION
396 #define KERNEL_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
398 extern int read_int_from_file(struct tcb *, const char *, int *);
400 extern void set_sortby(const char *);
401 extern void set_overhead(int);
402 extern void print_pc(struct tcb *);
404 extern int syscall_entering_decode(struct tcb *);
405 extern int syscall_entering_trace(struct tcb *, unsigned int *);
406 extern void syscall_entering_finish(struct tcb *, int);
408 extern int syscall_exiting_decode(struct tcb *, struct timespec *);
409 extern int syscall_exiting_trace(struct tcb *, struct timespec *, int);
410 extern void syscall_exiting_finish(struct tcb *);
412 extern void count_syscall(struct tcb *, const struct timespec *);
413 extern void call_summary(FILE *);
415 extern void clear_regs(struct tcb *tcp);
416 extern int get_scno(struct tcb *);
417 extern kernel_ulong_t get_rt_sigframe_addr(struct tcb *);
420 * Convert a (shuffled) syscall number to the corresponding syscall name.
422 * @param scno Syscall number.
423 * @return String literal corresponding to the syscall number in case latter
424 * is valid; NULL otherwise.
426 extern const char *syscall_name(kernel_ulong_t scno);
428 * Convert a syscall name to the corresponding (shuffled) syscall number.
430 * @param s Syscall name.
431 * @param p Personality.
432 * @param start From which position in syscall entry table resume the search.
433 * @return Shuffled syscall number (ready to use against sysent_vec)
434 * if syscall name is found; -1 otherwise.
436 extern kernel_long_t scno_by_name(const char *s, unsigned p,
437 kernel_long_t start);
439 * Shuffle syscall numbers so that we don't have huge gaps in syscall table.
440 * The shuffling should be an involution: shuffle_scno(shuffle_scno(n)) == n.
442 * @param scno Raw or shuffled syscall number.
443 * @return Shuffled or raw syscall number, respectively.
445 extern kernel_ulong_t shuffle_scno(kernel_ulong_t scno);
446 extern const char *err_name(unsigned long err);
448 extern bool is_erestart(struct tcb *);
449 extern void temporarily_clear_syserror(struct tcb *);
450 extern void restore_cleared_syserror(struct tcb *);
452 extern void *get_tcb_priv_data(const struct tcb *);
453 extern int set_tcb_priv_data(struct tcb *, void *priv_data,
454 void (*free_priv_data)(void *));
455 extern void free_tcb_priv_data(struct tcb *);
457 static inline unsigned long get_tcb_priv_ulong(const struct tcb *tcp)
459 return (unsigned long) get_tcb_priv_data(tcp);
462 static inline int set_tcb_priv_ulong(struct tcb *tcp, unsigned long val)
464 return set_tcb_priv_data(tcp, (void *) val, 0);
468 umoven(struct tcb *, kernel_ulong_t addr, unsigned int len, void *laddr);
469 #define umove(pid, addr, objp) \
470 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
473 umoven_or_printaddr64(struct tcb *, uint64_t addr,
474 unsigned int len, void *laddr);
475 #define umove_or_printaddr64(pid, addr, objp) \
476 umoven_or_printaddr64((pid), (addr), sizeof(*(objp)), (void *) (objp))
479 umoven_or_printaddr(struct tcb *tcp, const kernel_ulong_t addr,
480 unsigned int len, void *laddr)
482 return umoven_or_printaddr64(tcp, addr, len, laddr);
484 #define umove_or_printaddr(pid, addr, objp) \
485 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
488 umoven_or_printaddr64_ignore_syserror(struct tcb *, uint64_t addr,
489 unsigned int len, void *laddr);
490 #define umove_or_printaddr64_ignore_syserror(pid, addr, objp) \
491 umoven_or_printaddr64_ignore_syserror((pid), (addr), sizeof(*(objp)), \
495 umoven_or_printaddr_ignore_syserror(struct tcb *tcp, const kernel_ulong_t addr,
496 unsigned int len, void *laddr)
498 return umoven_or_printaddr64_ignore_syserror(tcp, addr, len, laddr);
500 #define umove_or_printaddr_ignore_syserror(pid, addr, objp) \
501 umoven_or_printaddr_ignore_syserror((pid), (addr), sizeof(*(objp)), \
505 umovestr(struct tcb *, kernel_ulong_t addr, unsigned int len, char *laddr);
507 extern int upeek(struct tcb *tcp, unsigned long, kernel_ulong_t *);
508 extern int upoke(struct tcb *tcp, unsigned long, kernel_ulong_t);
510 extern bool print_uint64_array_member(struct tcb *tcp, void *elem_buf,
511 size_t elem_size, void *data);
513 print_array(struct tcb *,
514 kernel_ulong_t start_addr,
518 int (*umoven_func)(struct tcb *,
522 bool (*print_func)(struct tcb *,
528 #if HAVE_ARCH_GETRVAL2
529 extern long getrval2(struct tcb *);
532 extern const char *signame(const int);
533 extern void pathtrace_select_set(const char *, struct path_set *);
534 extern bool pathtrace_match_set(struct tcb *, struct path_set *);
537 pathtrace_select(const char *path)
539 return pathtrace_select_set(path, &global_path_set);
543 pathtrace_match(struct tcb *tcp)
545 return pathtrace_match_set(tcp, &global_path_set);
548 extern int getfdpath(struct tcb *, int, char *, unsigned);
549 extern unsigned long getfdinode(struct tcb *, int);
550 extern enum sock_proto getfdproto(struct tcb *, int);
552 extern const char *xlookup(const struct xlat *, const uint64_t);
553 extern const char *xlat_search(const struct xlat *, const size_t, const uint64_t);
554 extern const char *xlat_idx(const struct xlat *xlat, size_t nmemb, uint64_t val);
557 struct dyxlat *dyxlat_alloc(size_t nmemb);
558 void dyxlat_free(struct dyxlat *);
559 const struct xlat *dyxlat_get(const struct dyxlat *);
560 void dyxlat_add_pair(struct dyxlat *, uint64_t val, const char *str, size_t len);
562 const struct xlat *genl_families_xlat(struct tcb *tcp);
564 extern unsigned long get_pagesize(void);
565 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
568 * Returns STR if it does not start with PREFIX,
569 * or a pointer to the first char in STR after PREFIX.
570 * The length of PREFIX is specified by PREFIX_LEN.
572 static inline const char *
573 str_strip_prefix_len(const char *str, const char *prefix, size_t prefix_len)
575 return strncmp(str, prefix, prefix_len) ? str : str + prefix_len;
578 #define STR_STRIP_PREFIX(str, prefix) \
579 str_strip_prefix_len((str), (prefix), sizeof(prefix) - 1)
581 #define QUOTE_0_TERMINATED 0x01
582 #define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
583 #define QUOTE_OMIT_TRAILING_0 0x08
584 #define QUOTE_FORCE_HEX 0x10
585 #define QUOTE_EMIT_COMMENT 0x20
587 extern int string_quote(const char *, char *, unsigned int, unsigned int,
588 const char *escape_chars);
589 extern int print_quoted_string_ex(const char *, unsigned int, unsigned int,
590 const char *escape_chars);
591 extern int print_quoted_string(const char *, unsigned int, unsigned int);
592 extern int print_quoted_cstring(const char *, unsigned int);
594 /* a refers to the lower numbered u_arg,
595 * b refers to the higher numbered u_arg
597 #ifdef WORDS_BIGENDIAN
598 # define ULONG_LONG(a, b) \
599 ((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32))
601 # define ULONG_LONG(a, b) \
602 ((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32))
604 extern int getllval(struct tcb *, unsigned long long *, int);
605 extern int printllval(struct tcb *, const char *, int)
606 ATTRIBUTE_FORMAT((printf, 2, 0));
608 extern void printaddr64(uint64_t addr);
609 extern void printaddr(kernel_ulong_t addr);
611 #define XLAT_STYLE_VERBOSITY_MASK (XLAT_STYLE_RAW | XLAT_STYLE_ABBREV)
612 #define XLAT_STYLE_FORMAT_SHIFT 2
613 #define XLAT_STYLE_FORMAT_MASK (3 << XLAT_STYLE_FORMAT_SHIFT)
615 #define xlat_verbose(style_) ((style_) & XLAT_STYLE_VERBOSITY_MASK)
616 #define xlat_format(style_) ((style_) & XLAT_STYLE_FORMAT_MASK)
626 * Special value that is used for passing to *print{xval,flags}*_ex
627 * routines that indicates that no overriding of user-supplied xlat
628 * verbosity/formatting configuration is intended.
630 XLAT_STYLE_DEFAULT = 0,
632 /** Print xlat value as is without xlat processing */
633 XLAT_STYLE_RAW = 1 << 0,
635 * Historic strace style, process xlat and print the result (xlat
636 * constant name/combination of flags), raw number only if nothing is
639 XLAT_STYLE_ABBREV = 1 << 1,
640 /** Always print both raw number and xlat processing result. */
641 XLAT_STYLE_VERBOSE = XLAT_STYLE_RAW | XLAT_STYLE_ABBREV,
643 XLAT_STYLE_FMT_X = 0 << XLAT_STYLE_FORMAT_SHIFT,
644 XLAT_STYLE_FMT_U = 1 << XLAT_STYLE_FORMAT_SHIFT,
645 XLAT_STYLE_FMT_D = 2 << XLAT_STYLE_FORMAT_SHIFT,
648 extern enum xlat_style xlat_verbosity;
650 extern int printxvals_ex(uint64_t val, const char *dflt,
651 enum xlat_style, const struct xlat *, ...)
653 #define printxvals(val_, dflt_, ...) \
654 printxvals_ex((val_), (dflt_), XLAT_STYLE_DEFAULT, __VA_ARGS__)
656 extern int printxval_searchn_ex(const struct xlat *, size_t xlat_size,
657 uint64_t val, const char *dflt,
661 printxval_searchn(const struct xlat *xlat, size_t xlat_size, uint64_t val,
664 return printxval_searchn_ex(xlat, xlat_size, val, dflt,
669 * Wrapper around printxval_searchn that passes ARRAY_SIZE - 1
670 * as the array size, as all arrays are XLAT_END-terminated and
671 * printxval_searchn expects a size without the terminating record.
673 #define printxval_search(xlat__, val__, dflt__) \
674 printxval_searchn(xlat__, ARRAY_SIZE(xlat__) - 1, val__, dflt__)
675 #define printxval_search_ex(xlat__, val__, dflt__) \
676 printxval_searchn_ex((xlat__), ARRAY_SIZE(xlat__) - 1, (val__), \
677 (dflt__), XLAT_STYLE_DEFAULT)
679 extern int printxval_indexn_ex(const struct xlat *, size_t xlat_size,
680 uint64_t val, const char *dflt, enum xlat_style);
683 printxval_indexn(const struct xlat *xlat, size_t xlat_size, uint64_t val,
686 return printxval_indexn_ex(xlat, xlat_size, val, dflt,
690 #define printxval_index(xlat__, val__, dflt__) \
691 printxval_indexn(xlat__, ARRAY_SIZE(xlat__) - 1, val__, dflt__)
692 #define printxval_index_ex(xlat__, val__, dflt__) \
693 printxval_indexn_ex((xlat__), ARRAY_SIZE(xlat__) - 1, (val__), \
694 (dflt__), XLAT_STYLE_DEFAULT)
696 extern int sprintxval_ex(char *buf, size_t size, const struct xlat *,
697 unsigned int val, const char *dflt, enum xlat_style);
700 sprintxval(char *buf, size_t size, const struct xlat *xlat, unsigned int val,
703 return sprintxval_ex(buf, size, xlat, val, dflt, XLAT_STYLE_DEFAULT);
706 extern void printxval_dispatch_ex(const struct xlat *, size_t xlat_size,
707 uint64_t val, const char *dflt,
708 enum xlat_type, enum xlat_style);
710 printxval_dispatch(const struct xlat *xlat, size_t xlat_size, uint64_t val,
711 const char *dflt, enum xlat_type xt)
713 return printxval_dispatch_ex(xlat, xlat_size, val, dflt, xt,
717 /** Print a value in accordance with xlat formatting settings. */
718 extern void print_xlat_ex(uint64_t val, const char *str, enum xlat_style style);
719 #define print_xlat(val_) \
720 print_xlat_ex((val_), #val_, XLAT_STYLE_DEFAULT)
721 #define print_xlat32(val_) \
722 print_xlat_ex((uint32_t) (val_), #val_, XLAT_STYLE_DEFAULT)
723 #define print_xlat_u(val_) \
724 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_U)
725 #define print_xlat_d(val_) \
726 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_D)
728 extern int printargs(struct tcb *);
729 extern int printargs_u(struct tcb *);
730 extern int printargs_d(struct tcb *);
732 extern int printflags_ex(uint64_t flags, const char *dflt,
733 enum xlat_style, const struct xlat *, ...)
735 extern const char *sprintflags_ex(const char *prefix, const struct xlat *,
736 uint64_t flags, enum xlat_style);
738 static inline const char *
739 sprintflags(const char *prefix, const struct xlat *xlat, uint64_t flags)
741 return sprintflags_ex(prefix, xlat, flags, XLAT_STYLE_DEFAULT);
744 extern const char *sprinttime(long long sec);
745 extern const char *sprinttime_nsec(long long sec, unsigned long long nsec);
746 extern const char *sprinttime_usec(long long sec, unsigned long long usec);
748 extern const char *sprint_mac_addr(const uint8_t addr[], size_t size);
750 extern void print_symbolic_mode_t(unsigned int);
751 extern void print_numeric_umode_t(unsigned short);
752 extern void print_numeric_long_umask(unsigned long);
753 extern void print_dev_t(unsigned long long dev);
754 extern void print_abnormal_hi(kernel_ulong_t);
756 extern kernel_ulong_t *
757 fetch_indirect_syscall_args(struct tcb *, kernel_ulong_t addr, unsigned int n_args);
760 dumpiov_in_msghdr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t data_size);
763 dumpiov_in_mmsghdr(struct tcb *, kernel_ulong_t addr);
766 dumpiov_upto(struct tcb *, int len, kernel_ulong_t addr, kernel_ulong_t data_size);
769 dumpstr(struct tcb *, kernel_ulong_t addr, int len);
772 printstr_ex(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len,
773 unsigned int user_style);
776 printpathn(struct tcb *, kernel_ulong_t addr, unsigned int n);
779 printpath(struct tcb *, kernel_ulong_t addr);
781 #define TIMESPEC_TEXT_BUFSIZE \
782 (sizeof(long long) * 3 * 2 + sizeof("{tv_sec=-, tv_nsec=}"))
783 extern void printfd(struct tcb *, int);
784 extern void print_sockaddr(const void *sa, int len);
786 print_inet_addr(int af, const void *addr, unsigned int len, const char *var_name);
788 decode_inet_addr(struct tcb *, kernel_ulong_t addr,
789 unsigned int len, int family, const char *var_name);
790 extern const char *get_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
791 extern bool print_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
792 extern void print_dirfd(struct tcb *, int);
795 decode_sockaddr(struct tcb *, kernel_ulong_t addr, int addrlen);
797 extern void printuid(const char *, const unsigned int);
800 print_sigset_addr_len(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
802 print_sigset_addr(struct tcb *, kernel_ulong_t addr);
804 extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
805 #define tprintsigmask_addr(prefix, mask) \
806 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
807 extern void printsignal(int);
810 tprint_iov_upto(struct tcb *, kernel_ulong_t len, kernel_ulong_t addr,
811 enum iov_decode, kernel_ulong_t data_size);
814 decode_netlink(struct tcb *, int fd, kernel_ulong_t addr, kernel_ulong_t len);
816 extern void tprint_open_modes(unsigned int);
817 extern const char *sprint_open_modes(unsigned int);
820 decode_seccomp_fprog(struct tcb *, kernel_ulong_t addr);
823 print_seccomp_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
826 decode_sock_fprog(struct tcb *, kernel_ulong_t addr);
829 print_sock_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
832 extern void print_struct_stat(struct tcb *, const struct strace_stat *const st);
834 struct strace_statfs;
835 struct strace_keyctl_kdf_params;
838 print_struct_statfs(struct tcb *, kernel_ulong_t addr);
841 print_struct_statfs64(struct tcb *, kernel_ulong_t addr, kernel_ulong_t size);
843 extern void print_ifindex(unsigned int);
845 extern void print_bpf_filter_code(const uint16_t code, bool extended);
847 extern void qualify(const char *);
848 extern unsigned int qual_flags(const unsigned int);
850 #define DECL_IOCTL(name) \
852 name ## _ioctl(struct tcb *, unsigned int request, kernel_ulong_t arg) \
853 /* End of DECL_IOCTL definition. */
868 extern int decode_sg_io_v4(struct tcb *, const kernel_ulong_t arg);
869 extern void print_evdev_ff_type(const kernel_ulong_t val);
873 typedef bool (*netlink_decoder_t)(struct tcb *, const struct nlmsghdr *,
874 kernel_ulong_t addr, unsigned int len);
876 #define DECL_NETLINK(name) \
878 decode_netlink_ ## name(struct tcb *, const struct nlmsghdr *, \
879 kernel_ulong_t addr, unsigned int len) \
880 /* End of DECL_NETLINK definition. */
882 DECL_NETLINK(crypto);
883 DECL_NETLINK(netfilter);
885 DECL_NETLINK(selinux);
886 DECL_NETLINK(sock_diag);
889 decode_netlink_kobject_uevent(struct tcb *, kernel_ulong_t addr,
892 extern int ts_nz(const struct timespec *);
893 extern int ts_cmp(const struct timespec *, const struct timespec *);
894 extern double ts_float(const struct timespec *);
895 extern void ts_add(struct timespec *, const struct timespec *, const struct timespec *);
896 extern void ts_sub(struct timespec *, const struct timespec *, const struct timespec *);
897 extern void ts_mul(struct timespec *, const struct timespec *, int);
898 extern void ts_div(struct timespec *, const struct timespec *, int);
900 #ifdef ENABLE_STACKTRACE
901 extern void unwind_init(void);
902 extern void unwind_tcb_init(struct tcb *);
903 extern void unwind_tcb_fin(struct tcb *);
904 extern void unwind_tcb_print(struct tcb *);
905 extern void unwind_tcb_capture(struct tcb *);
909 printstrn(struct tcb *tcp, kernel_ulong_t addr, kernel_ulong_t len)
911 return printstr_ex(tcp, addr, len, 0);
915 printstr(struct tcb *tcp, kernel_ulong_t addr)
917 return printstr_ex(tcp, addr, -1, QUOTE_0_TERMINATED);
921 printflags64(const struct xlat *x, uint64_t flags, const char *dflt)
923 return printflags_ex(flags, dflt, XLAT_STYLE_DEFAULT, x, NULL);
927 printflags(const struct xlat *x, unsigned int flags, const char *dflt)
929 return printflags64(x, flags, dflt);
933 printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
935 return printxvals(val, dflt, x, NULL);
939 printxval(const struct xlat *x, const unsigned int val, const char *dflt)
941 return printxvals(val, dflt, x, NULL);
945 printxval64_u(const struct xlat *x, const uint64_t val, const char *dflt)
947 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
951 printxval_u(const struct xlat *x, const unsigned int val, const char *dflt)
953 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
957 printxval64_d(const struct xlat *x, const int64_t val, const char *dflt)
959 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
963 printxval_d(const struct xlat *x, const int val, const char *dflt)
965 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
969 tprint_iov(struct tcb *tcp, kernel_ulong_t len, kernel_ulong_t addr,
970 enum iov_decode decode_iov)
972 tprint_iov_upto(tcp, len, addr, decode_iov, -1);
980 extern void print_timeval32_t(const timeval32_t *);
981 extern void printrusage32(struct tcb *, kernel_ulong_t);
982 extern const char *sprint_timeval32(struct tcb *, kernel_ulong_t addr);
983 extern void print_timeval32(struct tcb *, kernel_ulong_t addr);
984 extern void print_timeval32_utimes(struct tcb *, kernel_ulong_t addr);
985 extern void print_itimerval32(struct tcb *, kernel_ulong_t addr);
988 #ifdef HAVE_STRUCT_USER_DESC
990 * Filter what to print from the point of view of the get_thread_area syscall.
991 * Kernel copies only entry_number field at first and then tries to write the
994 enum user_desc_print_filter {
995 /* Print the "entering" part of struct user_desc - entry_number. */
996 USER_DESC_ENTERING = 1,
997 /* Print the "exiting" part of the structure. */
998 USER_DESC_EXITING = 2,
999 USER_DESC_BOTH = USER_DESC_ENTERING | USER_DESC_EXITING,
1002 extern void print_user_desc(struct tcb *, kernel_ulong_t addr,
1003 enum user_desc_print_filter filter);
1006 /* Strace log generation machinery.
1008 * printing_tcp: tcb which has incomplete line being printed right now.
1009 * NULL if last line has been completed ('\n'-terminated).
1010 * printleader(tcp) examines it, finishes incomplete line if needed,
1011 * the sets it to tcp.
1012 * line_ended() clears printing_tcp and resets ->curcol = 0.
1013 * tcp->curcol == 0 check is also used to detect completeness
1014 * of last line, since in -ff mode just checking printing_tcp for NULL
1017 * If you change this code, test log generation in both -f and -ff modes
1019 * strace -oLOG -f[f] test/threaded_execve
1020 * strace -oLOG -f[f] test/sigkill_rain
1021 * strace -oLOG -f[f] -p "`pidof web_browser`"
1023 extern struct tcb *printing_tcp;
1024 extern void printleader(struct tcb *);
1025 extern void line_ended(void);
1026 extern void tabto(void);
1027 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1028 extern void tprints(const char *str);
1029 extern void tprintf_comment(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1030 extern void tprints_comment(const char *str);
1033 print_mac_addr(const char *prefix, const uint8_t addr[], size_t size)
1036 tprints(sprint_mac_addr(addr, size));
1039 #if SUPPORTED_PERSONALITIES > 1
1040 extern void set_personality(unsigned int personality);
1041 extern unsigned current_personality;
1043 # define set_personality(personality) ((void)0)
1044 # define current_personality 0
1047 #if SUPPORTED_PERSONALITIES == 1
1048 # define current_wordsize PERSONALITY0_WORDSIZE
1049 # define current_klongsize PERSONALITY0_KLONGSIZE
1051 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
1052 # define current_wordsize PERSONALITY0_WORDSIZE
1054 extern unsigned current_wordsize;
1056 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_KLONGSIZE == PERSONALITY1_KLONGSIZE
1057 # define current_klongsize PERSONALITY0_KLONGSIZE
1059 extern unsigned current_klongsize;
1063 #define max_addr() (~0ULL >> ((8 - current_wordsize) * 8))
1064 #define max_kaddr() (~0ULL >> ((8 - current_klongsize) * 8))
1067 * When u64 is interpreted by the kernel as an address, there is a difference
1068 * in behaviour between 32-bit and 64-bit kernel in the way u64_to_user_ptr
1069 * works (32-bit kernel trims higher bits during conversion which may result
1070 * to a valid address). Since 32-bit strace cannot figure out what kind of
1071 * kernel the tracee is running on, it has to account for both possibilities.
1073 #if CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL
1076 * Print raw 64-bit value as an address if it's too big to fit in strace's
1080 print_big_u64_addr(const uint64_t addr)
1082 if (sizeof(kernel_long_t) < 8 && addr > max_kaddr()) {
1087 #else /* !CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1088 # define print_big_u64_addr(addr_) ((void) 0)
1089 #endif /* CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1091 #if SIZEOF_KERNEL_LONG_T > 4 \
1092 && (SIZEOF_LONG < SIZEOF_KERNEL_LONG_T || !defined(current_wordsize))
1093 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 1
1095 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 0
1098 #define DECL_PRINTNUM(name) \
1100 printnum_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1101 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1102 /* End of DECL_PRINTNUM definition. */
1104 DECL_PRINTNUM(short);
1106 DECL_PRINTNUM(int64);
1107 #undef DECL_PRINTNUM
1109 #define DECL_PRINTNUM_ADDR(name) \
1111 printnum_addr_ ## name(struct tcb *, kernel_ulong_t addr) \
1112 /* End of DECL_PRINTNUM_ADDR definition. */
1114 DECL_PRINTNUM_ADDR(int);
1115 DECL_PRINTNUM_ADDR(int64);
1116 #undef DECL_PRINTNUM_ADDR
1118 #ifndef current_wordsize
1120 printnum_long_int(struct tcb *, kernel_ulong_t addr,
1121 const char *fmt_long, const char *fmt_int)
1122 ATTRIBUTE_FORMAT((printf, 3, 0))
1123 ATTRIBUTE_FORMAT((printf, 4, 0));
1125 extern bool printnum_addr_long_int(struct tcb *, kernel_ulong_t addr);
1128 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1130 return printnum_long_int(tcp, addr, "%" PRId64, "%d");
1134 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1136 return printnum_long_int(tcp, addr, "%" PRIu64, "%u");
1140 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1142 return printnum_addr_long_int(tcp, addr);
1145 #elif current_wordsize > 4
1148 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1150 return printnum_int64(tcp, addr, "%" PRId64);
1154 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1156 return printnum_int64(tcp, addr, "%" PRIu64);
1160 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1162 return printnum_addr_int64(tcp, addr);
1165 #else /* current_wordsize == 4 */
1168 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1170 return printnum_int(tcp, addr, "%d");
1174 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1176 return printnum_int(tcp, addr, "%u");
1180 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1182 return printnum_addr_int(tcp, addr);
1187 #ifndef current_klongsize
1188 extern bool printnum_addr_klong_int(struct tcb *, kernel_ulong_t addr);
1191 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1193 return printnum_addr_klong_int(tcp, addr);
1196 #elif current_klongsize > 4
1199 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1201 return printnum_addr_int64(tcp, addr);
1204 #else /* current_klongsize == 4 */
1207 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1209 return printnum_addr_int(tcp, addr);
1214 #define DECL_PRINTPAIR(name) \
1216 printpair_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1217 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1218 /* End of DECL_PRINTPAIR definition. */
1220 DECL_PRINTPAIR(int);
1221 DECL_PRINTPAIR(int64);
1222 #undef DECL_PRINTPAIR
1224 static inline kernel_long_t
1225 truncate_klong_to_current_wordsize(const kernel_long_t v)
1227 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1228 if (current_wordsize < sizeof(v)) {
1237 static inline kernel_ulong_t
1238 truncate_kulong_to_current_wordsize(const kernel_ulong_t v)
1240 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1241 if (current_wordsize < sizeof(v)) {
1242 return (unsigned int) v;
1251 * Cast a pointer or a pointer-sized integer to kernel_ulong_t.
1253 #define ptr_to_kulong(v) ((kernel_ulong_t) (unsigned long) (v))
1256 * Zero-extend a signed integer type to unsigned long long.
1258 #define zero_extend_signed_to_ull(v) \
1259 (sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
1260 sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
1261 sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
1262 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
1263 (unsigned long long) (v))
1266 * Sign-extend an unsigned integer type to long long.
1268 #define sign_extend_unsigned_to_ll(v) \
1269 (sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
1270 sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
1271 sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
1272 sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
1275 extern const char *const errnoent[];
1276 extern const char *const signalent[];
1277 extern const unsigned int nerrnos;
1278 extern const unsigned int nsignals;
1280 extern const struct_sysent sysent0[];
1281 extern const struct_ioctlent ioctlent0[];
1283 extern const char *const personality_names[];
1285 #if SUPPORTED_PERSONALITIES > 1
1286 extern const struct_sysent *sysent;
1287 extern const struct_ioctlent *ioctlent;
1289 # define sysent sysent0
1290 # define ioctlent ioctlent0
1293 extern unsigned nsyscalls;
1294 extern unsigned nioctlents;
1296 extern const unsigned int nsyscall_vec[SUPPORTED_PERSONALITIES];
1297 extern const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES];
1298 extern struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
1300 #ifdef IN_MPERS_BOOTSTRAP
1301 /* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
1302 # define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
1303 #else /* !IN_MPERS_BOOTSTRAP */
1304 # if SUPPORTED_PERSONALITIES > 1
1305 # include "printers.h"
1307 # include "native_printer_decls.h"
1309 # define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
1310 #endif /* !IN_MPERS_BOOTSTRAP */
1312 /* Checks that sysent[scno] is not out of range. */
1314 scno_in_range(kernel_ulong_t scno)
1316 return scno < nsyscalls;
1320 * Checks whether scno is not out of range,
1321 * its corresponding sysent[scno].sys_func is non-NULL,
1322 * and its sysent[scno].sys_flags has no TRACE_INDIRECT_SUBCALL flag set.
1325 scno_is_valid(kernel_ulong_t scno)
1327 return scno_in_range(scno)
1328 && sysent[scno].sys_func
1329 && !(sysent[scno].sys_flags & TRACE_INDIRECT_SUBCALL);
1332 #define MPERS_FUNC_NAME__(prefix, name) prefix ## name
1333 #define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
1334 #define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
1336 #define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
1338 #define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
1340 #endif /* !STRACE_DEFS_H */