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 * @return 0 on success, -1 on error.
471 umoven(struct tcb *, kernel_ulong_t addr, unsigned int len, void *laddr);
472 #define umove(pid, addr, objp) \
473 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
476 * @return 0 on success, -1 on error (and print addr).
479 umoven_or_printaddr64(struct tcb *, uint64_t addr,
480 unsigned int len, void *laddr);
481 #define umove_or_printaddr64(pid, addr, objp) \
482 umoven_or_printaddr64((pid), (addr), sizeof(*(objp)), (void *) (objp))
485 umoven_or_printaddr(struct tcb *tcp, const kernel_ulong_t addr,
486 unsigned int len, void *laddr)
488 return umoven_or_printaddr64(tcp, addr, len, laddr);
490 #define umove_or_printaddr(pid, addr, objp) \
491 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
494 * @return 0 on success, -1 on error (and print addr).
497 umoven_or_printaddr64_ignore_syserror(struct tcb *, uint64_t addr,
498 unsigned int len, void *laddr);
499 #define umove_or_printaddr64_ignore_syserror(pid, addr, objp) \
500 umoven_or_printaddr64_ignore_syserror((pid), (addr), sizeof(*(objp)), \
504 umoven_or_printaddr_ignore_syserror(struct tcb *tcp, const kernel_ulong_t addr,
505 unsigned int len, void *laddr)
507 return umoven_or_printaddr64_ignore_syserror(tcp, addr, len, laddr);
509 #define umove_or_printaddr_ignore_syserror(pid, addr, objp) \
510 umoven_or_printaddr_ignore_syserror((pid), (addr), sizeof(*(objp)), \
514 * @return strlen + 1 on success, 0 on success and no NUL seen, -1 on error.
517 umovestr(struct tcb *, kernel_ulong_t addr, unsigned int len, char *laddr);
519 extern int upeek(struct tcb *tcp, unsigned long, kernel_ulong_t *);
520 extern int upoke(struct tcb *tcp, unsigned long, kernel_ulong_t);
522 #if HAVE_ARCH_GETRVAL2
523 extern long getrval2(struct tcb *);
526 extern const char *signame(const int);
527 extern void pathtrace_select_set(const char *, struct path_set *);
528 extern bool pathtrace_match_set(struct tcb *, struct path_set *);
531 pathtrace_select(const char *path)
533 return pathtrace_select_set(path, &global_path_set);
537 pathtrace_match(struct tcb *tcp)
539 return pathtrace_match_set(tcp, &global_path_set);
542 extern int getfdpath(struct tcb *, int, char *, unsigned);
543 extern unsigned long getfdinode(struct tcb *, int);
544 extern enum sock_proto getfdproto(struct tcb *, int);
546 extern const char *xlookup(const struct xlat *, const uint64_t);
547 extern const char *xlat_search(const struct xlat *, const size_t, const uint64_t);
548 extern const char *xlat_idx(const struct xlat *xlat, size_t nmemb, uint64_t val);
551 struct dyxlat *dyxlat_alloc(size_t nmemb);
552 void dyxlat_free(struct dyxlat *);
553 const struct xlat *dyxlat_get(const struct dyxlat *);
554 void dyxlat_add_pair(struct dyxlat *, uint64_t val, const char *str, size_t len);
556 const struct xlat *genl_families_xlat(struct tcb *tcp);
558 extern unsigned long get_pagesize(void);
559 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
562 * Returns STR if it does not start with PREFIX,
563 * or a pointer to the first char in STR after PREFIX.
564 * The length of PREFIX is specified by PREFIX_LEN.
566 static inline const char *
567 str_strip_prefix_len(const char *str, const char *prefix, size_t prefix_len)
569 return strncmp(str, prefix, prefix_len) ? str : str + prefix_len;
572 #define STR_STRIP_PREFIX(str, prefix) \
573 str_strip_prefix_len((str), (prefix), sizeof(prefix) - 1)
575 #define QUOTE_0_TERMINATED 0x01
576 #define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
577 #define QUOTE_OMIT_TRAILING_0 0x08
578 #define QUOTE_FORCE_HEX 0x10
579 #define QUOTE_EMIT_COMMENT 0x20
581 extern int string_quote(const char *, char *, unsigned int, unsigned int,
582 const char *escape_chars);
583 extern int print_quoted_string_ex(const char *, unsigned int, unsigned int,
584 const char *escape_chars);
585 extern int print_quoted_string(const char *, unsigned int, unsigned int);
586 extern int print_quoted_cstring(const char *, unsigned int);
588 /* a refers to the lower numbered u_arg,
589 * b refers to the higher numbered u_arg
591 #ifdef WORDS_BIGENDIAN
592 # define ULONG_LONG(a, b) \
593 ((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32))
595 # define ULONG_LONG(a, b) \
596 ((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32))
598 extern int getllval(struct tcb *, unsigned long long *, int);
599 extern int printllval(struct tcb *, const char *, int)
600 ATTRIBUTE_FORMAT((printf, 2, 0));
602 extern void printaddr64(uint64_t addr);
605 printaddr(const kernel_ulong_t addr)
610 #define XLAT_STYLE_VERBOSITY_MASK (XLAT_STYLE_RAW | XLAT_STYLE_ABBREV)
611 #define XLAT_STYLE_FORMAT_SHIFT 2
612 #define XLAT_STYLE_FORMAT_MASK (3 << XLAT_STYLE_FORMAT_SHIFT)
614 #define xlat_verbose(style_) ((style_) & XLAT_STYLE_VERBOSITY_MASK)
615 #define xlat_format(style_) ((style_) & XLAT_STYLE_FORMAT_MASK)
625 * Special value that is used for passing to *print{xval,flags}*_ex
626 * routines that indicates that no overriding of user-supplied xlat
627 * verbosity/formatting configuration is intended.
629 XLAT_STYLE_DEFAULT = 0,
631 /** Print xlat value as is without xlat processing */
632 XLAT_STYLE_RAW = 1 << 0,
634 * Historic strace style, process xlat and print the result (xlat
635 * constant name/combination of flags), raw number only if nothing is
638 XLAT_STYLE_ABBREV = 1 << 1,
639 /** Always print both raw number and xlat processing result. */
640 XLAT_STYLE_VERBOSE = XLAT_STYLE_RAW | XLAT_STYLE_ABBREV,
642 XLAT_STYLE_FMT_X = 0 << XLAT_STYLE_FORMAT_SHIFT,
643 XLAT_STYLE_FMT_U = 1 << XLAT_STYLE_FORMAT_SHIFT,
644 XLAT_STYLE_FMT_D = 2 << XLAT_STYLE_FORMAT_SHIFT,
647 extern enum xlat_style xlat_verbosity;
649 extern int printxvals_ex(uint64_t val, const char *dflt,
650 enum xlat_style, const struct xlat *, ...)
652 #define printxvals(val_, dflt_, ...) \
653 printxvals_ex((val_), (dflt_), XLAT_STYLE_DEFAULT, __VA_ARGS__)
655 extern int printxval_searchn_ex(const struct xlat *, size_t xlat_size,
656 uint64_t val, const char *dflt,
660 printxval_searchn(const struct xlat *xlat, size_t xlat_size, uint64_t val,
663 return printxval_searchn_ex(xlat, xlat_size, val, dflt,
668 * Wrapper around printxval_searchn that passes ARRAY_SIZE - 1
669 * as the array size, as all arrays are XLAT_END-terminated and
670 * printxval_searchn expects a size without the terminating record.
672 #define printxval_search(xlat__, val__, dflt__) \
673 printxval_searchn(xlat__, ARRAY_SIZE(xlat__) - 1, val__, dflt__)
674 #define printxval_search_ex(xlat__, val__, dflt__) \
675 printxval_searchn_ex((xlat__), ARRAY_SIZE(xlat__) - 1, (val__), \
676 (dflt__), XLAT_STYLE_DEFAULT)
678 extern int printxval_indexn_ex(const struct xlat *, size_t xlat_size,
679 uint64_t val, const char *dflt, enum xlat_style);
682 printxval_indexn(const struct xlat *xlat, size_t xlat_size, uint64_t val,
685 return printxval_indexn_ex(xlat, xlat_size, val, dflt,
689 #define printxval_index(xlat__, val__, dflt__) \
690 printxval_indexn(xlat__, ARRAY_SIZE(xlat__) - 1, val__, dflt__)
691 #define printxval_index_ex(xlat__, val__, dflt__) \
692 printxval_indexn_ex((xlat__), ARRAY_SIZE(xlat__) - 1, (val__), \
693 (dflt__), XLAT_STYLE_DEFAULT)
695 extern int sprintxval_ex(char *buf, size_t size, const struct xlat *,
696 unsigned int val, const char *dflt, enum xlat_style);
699 sprintxval(char *buf, size_t size, const struct xlat *xlat, unsigned int val,
702 return sprintxval_ex(buf, size, xlat, val, dflt, XLAT_STYLE_DEFAULT);
705 extern void printxval_dispatch_ex(const struct xlat *, size_t xlat_size,
706 uint64_t val, const char *dflt,
707 enum xlat_type, enum xlat_style);
709 printxval_dispatch(const struct xlat *xlat, size_t xlat_size, uint64_t val,
710 const char *dflt, enum xlat_type xt)
712 return printxval_dispatch_ex(xlat, xlat_size, val, dflt, xt,
716 /** Print a value in accordance with xlat formatting settings. */
717 extern void print_xlat_ex(uint64_t val, const char *str, enum xlat_style style);
718 #define print_xlat(val_) \
719 print_xlat_ex((val_), #val_, XLAT_STYLE_DEFAULT)
720 #define print_xlat32(val_) \
721 print_xlat_ex((uint32_t) (val_), #val_, XLAT_STYLE_DEFAULT)
722 #define print_xlat_u(val_) \
723 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_U)
724 #define print_xlat_d(val_) \
725 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_D)
727 extern int printargs(struct tcb *);
728 extern int printargs_u(struct tcb *);
729 extern int printargs_d(struct tcb *);
731 extern int printflags_ex(uint64_t flags, const char *dflt,
732 enum xlat_style, const struct xlat *, ...)
734 extern const char *sprintflags_ex(const char *prefix, const struct xlat *,
735 uint64_t flags, enum xlat_style);
737 static inline const char *
738 sprintflags(const char *prefix, const struct xlat *xlat, uint64_t flags)
740 return sprintflags_ex(prefix, xlat, flags, XLAT_STYLE_DEFAULT);
743 extern const char *sprinttime(long long sec);
744 extern const char *sprinttime_nsec(long long sec, unsigned long long nsec);
745 extern const char *sprinttime_usec(long long sec, unsigned long long usec);
747 extern const char *sprint_mac_addr(const uint8_t addr[], size_t size);
749 extern void print_symbolic_mode_t(unsigned int);
750 extern void print_numeric_umode_t(unsigned short);
751 extern void print_numeric_long_umask(unsigned long);
752 extern void print_dev_t(unsigned long long dev);
753 extern void print_abnormal_hi(kernel_ulong_t);
755 extern bool print_int32_array_member(struct tcb *, void *elem_buf,
756 size_t elem_size, void *data);
757 extern bool print_uint32_array_member(struct tcb *, void *elem_buf,
758 size_t elem_size, void *data);
759 extern bool print_uint64_array_member(struct tcb *, void *elem_buf,
760 size_t elem_size, void *data);
763 print_array(struct tcb *,
764 kernel_ulong_t start_addr,
768 int (*umoven_func)(struct tcb *,
772 bool (*print_func)(struct tcb *,
778 extern kernel_ulong_t *
779 fetch_indirect_syscall_args(struct tcb *, kernel_ulong_t addr, unsigned int n_args);
782 dumpiov_in_msghdr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t data_size);
785 dumpiov_in_mmsghdr(struct tcb *, kernel_ulong_t addr);
788 dumpiov_upto(struct tcb *, int len, kernel_ulong_t addr, kernel_ulong_t data_size);
791 dumpstr(struct tcb *, kernel_ulong_t addr, int len);
794 printstr_ex(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len,
795 unsigned int user_style);
798 printpathn(struct tcb *, kernel_ulong_t addr, unsigned int n);
801 printpath(struct tcb *, kernel_ulong_t addr);
803 #define TIMESPEC_TEXT_BUFSIZE \
804 (sizeof(long long) * 3 * 2 + sizeof("{tv_sec=-, tv_nsec=}"))
805 extern void printfd(struct tcb *, int);
806 extern void print_sockaddr(const void *sa, int len);
808 print_inet_addr(int af, const void *addr, unsigned int len, const char *var_name);
810 decode_inet_addr(struct tcb *, kernel_ulong_t addr,
811 unsigned int len, int family, const char *var_name);
812 extern const char *get_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
813 extern bool print_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
814 extern void print_dirfd(struct tcb *, int);
817 decode_sockaddr(struct tcb *, kernel_ulong_t addr, int addrlen);
819 extern void printuid(const char *, const unsigned int);
822 print_sigset_addr_len(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
824 print_sigset_addr(struct tcb *, kernel_ulong_t addr);
826 extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
827 #define tprintsigmask_addr(prefix, mask) \
828 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
829 extern void printsignal(int);
832 tprint_iov_upto(struct tcb *, kernel_ulong_t len, kernel_ulong_t addr,
833 enum iov_decode, kernel_ulong_t data_size);
836 decode_netlink(struct tcb *, int fd, kernel_ulong_t addr, kernel_ulong_t len);
838 extern void tprint_open_modes(unsigned int);
839 extern const char *sprint_open_modes(unsigned int);
842 decode_seccomp_fprog(struct tcb *, kernel_ulong_t addr);
845 print_seccomp_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
848 decode_sock_fprog(struct tcb *, kernel_ulong_t addr);
851 print_sock_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
854 extern void print_struct_stat(struct tcb *, const struct strace_stat *const st);
856 struct strace_statfs;
857 struct strace_keyctl_kdf_params;
860 print_struct_statfs(struct tcb *, kernel_ulong_t addr);
863 print_struct_statfs64(struct tcb *, kernel_ulong_t addr, kernel_ulong_t size);
866 fetch_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
868 print_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
870 extern void print_ifindex(unsigned int);
872 extern void print_bpf_filter_code(const uint16_t code, bool extended);
874 extern void qualify(const char *);
875 extern unsigned int qual_flags(const unsigned int);
877 #define DECL_IOCTL(name) \
879 name ## _ioctl(struct tcb *, unsigned int request, kernel_ulong_t arg) \
880 /* End of DECL_IOCTL definition. */
896 extern int decode_sg_io_v4(struct tcb *, const kernel_ulong_t arg);
897 extern void print_evdev_ff_type(const kernel_ulong_t val);
901 typedef bool (*netlink_decoder_t)(struct tcb *, const struct nlmsghdr *,
902 kernel_ulong_t addr, unsigned int len);
904 #define DECL_NETLINK(name) \
906 decode_netlink_ ## name(struct tcb *, const struct nlmsghdr *, \
907 kernel_ulong_t addr, unsigned int len) \
908 /* End of DECL_NETLINK definition. */
910 DECL_NETLINK(crypto);
911 DECL_NETLINK(netfilter);
913 DECL_NETLINK(selinux);
914 DECL_NETLINK(sock_diag);
917 decode_netlink_kobject_uevent(struct tcb *, kernel_ulong_t addr,
920 extern int ts_nz(const struct timespec *);
921 extern int ts_cmp(const struct timespec *, const struct timespec *);
922 extern double ts_float(const struct timespec *);
923 extern void ts_add(struct timespec *, const struct timespec *, const struct timespec *);
924 extern void ts_sub(struct timespec *, const struct timespec *, const struct timespec *);
925 extern void ts_mul(struct timespec *, const struct timespec *, int);
926 extern void ts_div(struct timespec *, const struct timespec *, int);
928 #ifdef ENABLE_STACKTRACE
929 extern void unwind_init(void);
930 extern void unwind_tcb_init(struct tcb *);
931 extern void unwind_tcb_fin(struct tcb *);
932 extern void unwind_tcb_print(struct tcb *);
933 extern void unwind_tcb_capture(struct tcb *);
937 printstrn(struct tcb *tcp, kernel_ulong_t addr, kernel_ulong_t len)
939 return printstr_ex(tcp, addr, len, 0);
943 printstr(struct tcb *tcp, kernel_ulong_t addr)
945 return printstr_ex(tcp, addr, -1, QUOTE_0_TERMINATED);
949 printflags64(const struct xlat *x, uint64_t flags, const char *dflt)
951 return printflags_ex(flags, dflt, XLAT_STYLE_DEFAULT, x, NULL);
955 printflags(const struct xlat *x, unsigned int flags, const char *dflt)
957 return printflags64(x, flags, dflt);
961 printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
963 return printxvals(val, dflt, x, NULL);
967 printxval(const struct xlat *x, const unsigned int val, const char *dflt)
969 return printxvals(val, dflt, x, NULL);
973 printxval64_u(const struct xlat *x, const uint64_t val, const char *dflt)
975 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
979 printxval_u(const struct xlat *x, const unsigned int val, const char *dflt)
981 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
985 printxval64_d(const struct xlat *x, const int64_t val, const char *dflt)
987 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
991 printxval_d(const struct xlat *x, const int val, const char *dflt)
993 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
997 tprint_iov(struct tcb *tcp, kernel_ulong_t len, kernel_ulong_t addr,
998 enum iov_decode decode_iov)
1000 tprint_iov_upto(tcp, len, addr, decode_iov, -1);
1005 int tv_sec, tv_usec;
1008 extern void print_timeval32_t(const timeval32_t *);
1009 extern void printrusage32(struct tcb *, kernel_ulong_t);
1010 extern const char *sprint_timeval32(struct tcb *, kernel_ulong_t addr);
1011 extern void print_timeval32(struct tcb *, kernel_ulong_t addr);
1012 extern void print_timeval32_utimes(struct tcb *, kernel_ulong_t addr);
1013 extern void print_itimerval32(struct tcb *, kernel_ulong_t addr);
1016 #ifdef HAVE_STRUCT_USER_DESC
1018 * Filter what to print from the point of view of the get_thread_area syscall.
1019 * Kernel copies only entry_number field at first and then tries to write the
1022 enum user_desc_print_filter {
1023 /* Print the "entering" part of struct user_desc - entry_number. */
1024 USER_DESC_ENTERING = 1,
1025 /* Print the "exiting" part of the structure. */
1026 USER_DESC_EXITING = 2,
1027 USER_DESC_BOTH = USER_DESC_ENTERING | USER_DESC_EXITING,
1030 extern void print_user_desc(struct tcb *, kernel_ulong_t addr,
1031 enum user_desc_print_filter filter);
1034 /* Strace log generation machinery.
1036 * printing_tcp: tcb which has incomplete line being printed right now.
1037 * NULL if last line has been completed ('\n'-terminated).
1038 * printleader(tcp) examines it, finishes incomplete line if needed,
1039 * the sets it to tcp.
1040 * line_ended() clears printing_tcp and resets ->curcol = 0.
1041 * tcp->curcol == 0 check is also used to detect completeness
1042 * of last line, since in -ff mode just checking printing_tcp for NULL
1045 * If you change this code, test log generation in both -f and -ff modes
1047 * strace -oLOG -f[f] test/threaded_execve
1048 * strace -oLOG -f[f] test/sigkill_rain
1049 * strace -oLOG -f[f] -p "`pidof web_browser`"
1051 extern struct tcb *printing_tcp;
1052 extern void printleader(struct tcb *);
1053 extern void line_ended(void);
1054 extern void tabto(void);
1055 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1056 extern void tprints(const char *str);
1057 extern void tprintf_comment(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1058 extern void tprints_comment(const char *str);
1061 print_mac_addr(const char *prefix, const uint8_t addr[], size_t size)
1064 tprints(sprint_mac_addr(addr, size));
1067 #if SUPPORTED_PERSONALITIES > 1
1068 extern void set_personality(unsigned int personality);
1069 extern unsigned current_personality;
1071 # define set_personality(personality) ((void)0)
1072 # define current_personality 0
1075 #if SUPPORTED_PERSONALITIES == 1
1076 # define current_wordsize PERSONALITY0_WORDSIZE
1077 # define current_klongsize PERSONALITY0_KLONGSIZE
1079 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
1080 # define current_wordsize PERSONALITY0_WORDSIZE
1082 extern unsigned current_wordsize;
1084 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_KLONGSIZE == PERSONALITY1_KLONGSIZE
1085 # define current_klongsize PERSONALITY0_KLONGSIZE
1087 extern unsigned current_klongsize;
1091 #define max_addr() (~0ULL >> ((8 - current_wordsize) * 8))
1092 #define max_kaddr() (~0ULL >> ((8 - current_klongsize) * 8))
1095 * When u64 is interpreted by the kernel as an address, there is a difference
1096 * in behaviour between 32-bit and 64-bit kernel in the way u64_to_user_ptr
1097 * works (32-bit kernel trims higher bits during conversion which may result
1098 * to a valid address). Since 32-bit strace cannot figure out what kind of
1099 * kernel the tracee is running on, it has to account for both possibilities.
1101 #if CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL
1104 * Print raw 64-bit value as an address if it's too big to fit in strace's
1108 print_big_u64_addr(const uint64_t addr)
1110 if (sizeof(kernel_long_t) < 8 && addr > max_kaddr()) {
1115 #else /* !CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1116 # define print_big_u64_addr(addr_) ((void) 0)
1117 #endif /* CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1119 #if SIZEOF_KERNEL_LONG_T > 4 \
1120 && (SIZEOF_LONG < SIZEOF_KERNEL_LONG_T || !defined(current_wordsize))
1121 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 1
1123 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 0
1126 #define DECL_PRINTNUM(name) \
1128 printnum_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1129 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1130 /* End of DECL_PRINTNUM definition. */
1132 DECL_PRINTNUM(short);
1134 DECL_PRINTNUM(int64);
1135 #undef DECL_PRINTNUM
1137 #define DECL_PRINTNUM_ADDR(name) \
1139 printnum_addr_ ## name(struct tcb *, kernel_ulong_t addr) \
1140 /* End of DECL_PRINTNUM_ADDR definition. */
1142 DECL_PRINTNUM_ADDR(int);
1143 DECL_PRINTNUM_ADDR(int64);
1144 #undef DECL_PRINTNUM_ADDR
1146 #ifndef current_wordsize
1148 printnum_long_int(struct tcb *, kernel_ulong_t addr,
1149 const char *fmt_long, const char *fmt_int)
1150 ATTRIBUTE_FORMAT((printf, 3, 0))
1151 ATTRIBUTE_FORMAT((printf, 4, 0));
1153 extern bool printnum_addr_long_int(struct tcb *, kernel_ulong_t addr);
1156 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1158 return printnum_long_int(tcp, addr, "%" PRId64, "%d");
1162 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1164 return printnum_long_int(tcp, addr, "%" PRIu64, "%u");
1168 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1170 return printnum_addr_long_int(tcp, addr);
1173 #elif current_wordsize > 4
1176 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1178 return printnum_int64(tcp, addr, "%" PRId64);
1182 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1184 return printnum_int64(tcp, addr, "%" PRIu64);
1188 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1190 return printnum_addr_int64(tcp, addr);
1193 #else /* current_wordsize == 4 */
1196 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1198 return printnum_int(tcp, addr, "%d");
1202 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1204 return printnum_int(tcp, addr, "%u");
1208 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1210 return printnum_addr_int(tcp, addr);
1215 #ifndef current_klongsize
1216 extern bool printnum_addr_klong_int(struct tcb *, kernel_ulong_t addr);
1219 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1221 return printnum_addr_klong_int(tcp, addr);
1224 #elif current_klongsize > 4
1227 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1229 return printnum_addr_int64(tcp, addr);
1232 #else /* current_klongsize == 4 */
1235 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1237 return printnum_addr_int(tcp, addr);
1242 #define DECL_PRINTPAIR(name) \
1244 printpair_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1245 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1246 /* End of DECL_PRINTPAIR definition. */
1248 DECL_PRINTPAIR(int);
1249 DECL_PRINTPAIR(int64);
1250 #undef DECL_PRINTPAIR
1252 static inline kernel_long_t
1253 truncate_klong_to_current_wordsize(const kernel_long_t v)
1255 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1256 if (current_wordsize < sizeof(v)) {
1265 static inline kernel_ulong_t
1266 truncate_kulong_to_current_wordsize(const kernel_ulong_t v)
1268 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1269 if (current_wordsize < sizeof(v)) {
1270 return (unsigned int) v;
1279 * Cast a pointer or a pointer-sized integer to kernel_ulong_t.
1281 #define ptr_to_kulong(v) ((kernel_ulong_t) (unsigned long) (v))
1284 * Zero-extend a signed integer type to unsigned long long.
1286 #define zero_extend_signed_to_ull(v) \
1287 (sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
1288 sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
1289 sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
1290 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
1291 (unsigned long long) (v))
1294 * Sign-extend an unsigned integer type to long long.
1296 #define sign_extend_unsigned_to_ll(v) \
1297 (sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
1298 sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
1299 sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
1300 sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
1303 extern const char *const errnoent[];
1304 extern const char *const signalent[];
1305 extern const unsigned int nerrnos;
1306 extern const unsigned int nsignals;
1308 extern const struct_sysent sysent0[];
1309 extern const struct_ioctlent ioctlent0[];
1311 extern const char *const personality_names[];
1313 #if SUPPORTED_PERSONALITIES > 1
1314 extern const struct_sysent *sysent;
1315 extern const struct_ioctlent *ioctlent;
1317 # define sysent sysent0
1318 # define ioctlent ioctlent0
1321 extern unsigned nsyscalls;
1322 extern unsigned nioctlents;
1324 extern const unsigned int nsyscall_vec[SUPPORTED_PERSONALITIES];
1325 extern const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES];
1326 extern struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
1328 #ifdef IN_MPERS_BOOTSTRAP
1329 /* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
1330 # define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
1331 #else /* !IN_MPERS_BOOTSTRAP */
1332 # if SUPPORTED_PERSONALITIES > 1
1333 # include "printers.h"
1335 # include "native_printer_decls.h"
1337 # define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
1338 #endif /* !IN_MPERS_BOOTSTRAP */
1340 /* Checks that sysent[scno] is not out of range. */
1342 scno_in_range(kernel_ulong_t scno)
1344 return scno < nsyscalls;
1348 * Checks whether scno is not out of range,
1349 * its corresponding sysent[scno].sys_func is non-NULL,
1350 * and its sysent[scno].sys_flags has no TRACE_INDIRECT_SUBCALL flag set.
1353 scno_is_valid(kernel_ulong_t scno)
1355 return scno_in_range(scno)
1356 && sysent[scno].sys_func
1357 && !(sysent[scno].sys_flags & TRACE_INDIRECT_SUBCALL);
1360 #define MPERS_FUNC_NAME__(prefix, name) prefix ## name
1361 #define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
1362 #define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
1364 #define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
1366 #define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
1368 #endif /* !STRACE_DEFS_H */