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
185 #define INJECT_F_SYSCALL 0x20
187 #define INJECT_ACTION_FLAGS \
191 |INJECT_F_DELAY_ENTER \
192 |INJECT_F_DELAY_EXIT \
196 uint8_t flags; /* 6 of 8 flags are used so far */
197 uint8_t signo; /* NSIG <= 128 */
198 uint16_t rval_idx; /* index in retval_vec */
199 uint16_t delay_idx; /* index in delay_data_vec */
200 uint16_t scno; /* syscall to be injected instead of -1 */
206 struct inject_data data;
209 #define MAX_ERRNO_VALUE 4095
211 /* Trace Control Block */
213 int flags; /* See below for TCB_ values */
214 int pid; /* If 0, this tcb is free */
215 int qual_flg; /* qual_flags[scno] or DEFAULT_QUAL_FLAGS + RAW */
216 unsigned long u_error; /* Error code */
217 kernel_ulong_t scno; /* System call number */
218 kernel_ulong_t u_arg[MAX_ARGS]; /* System call arguments */
219 kernel_long_t u_rval; /* Return value */
220 #if SUPPORTED_PERSONALITIES > 1
221 unsigned int currpers; /* Personality at the time of scno update */
223 int sys_func_rval; /* Syscall entry parser's return value */
224 int curcol; /* Output column for this process */
225 FILE *outf; /* Output file for this process */
226 const char *auxstr; /* Auxiliary info from syscall (see RVAL_STR) */
227 void *_priv_data; /* Private data for syscall decoding functions */
228 void (*_free_priv_data)(void *); /* Callback for freeing priv_data */
229 const struct_sysent *s_ent; /* sysent[scno] or dummy struct for bad scno */
230 const struct_sysent *s_prev_ent; /* for "resuming interrupted SYSCALL" msg */
231 struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
232 struct timespec stime; /* System time usage as of last process wait */
233 struct timespec dtime; /* Delta for system time usage */
234 struct timespec etime; /* Syscall entry time */
235 struct timespec delay_expiration_time; /* When does the delay end */
237 struct mmap_cache_t *mmap_cache;
239 #ifdef HAVE_LINUX_KVM_H
240 struct vcpu_info *vcpu_info_list;
243 #ifdef ENABLE_STACKTRACE
245 struct unwind_queue_t *unwind_queue;
250 /* We have attached to this process, but did not see it stopping yet */
251 #define TCB_STARTUP 0x01
252 #define TCB_IGNORE_ONE_SIGSTOP 0x02 /* Next SIGSTOP is to be ignored */
254 * Are we in system call entry or in syscall exit?
256 * This bit is set in syscall_entering_finish() and cleared in
257 * syscall_exiting_finish().
258 * Other stops which are possible directly after syscall entry (death, ptrace
259 * event stop) are handled without calling syscall_{entering,exiting}_*().
261 * Use entering(tcp) / exiting(tcp) to check this bit to make code more
264 #define TCB_INSYSCALL 0x04
265 #define TCB_ATTACHED 0x08 /* We attached to it already */
266 #define TCB_REPRINT 0x10 /* We should reprint this syscall on exit */
267 #define TCB_FILTERED 0x20 /* This system call has been filtered out */
268 #define TCB_TAMPERED 0x40 /* A syscall has been tampered with */
269 #define TCB_HIDE_LOG 0x80 /* We should hide everything (until execve) */
270 #define TCB_SKIP_DETACH_ON_FIRST_EXEC 0x100 /* -b execve should skip detach on first execve */
271 #define TCB_GRABBED 0x200 /* We grab the process and can catch it
272 * in the middle of a syscall */
273 #define TCB_RECOVERING 0x400 /* We try to recover after detecting incorrect
274 * syscall entering/exiting state */
275 #define TCB_INJECT_DELAY_EXIT 0x800 /* Current syscall needs to be delayed
277 #define TCB_DELAYED 0x1000 /* Current syscall has been delayed */
278 #define TCB_TAMPERED_NO_FAIL 0x2000 /* We tamper tcb with syscall
279 that should not fail. */
281 /* qualifier flags */
282 #define QUAL_TRACE 0x001 /* this system call should be traced */
283 #define QUAL_ABBREV 0x002 /* abbreviate the structures of this syscall */
284 #define QUAL_VERBOSE 0x004 /* decode the structures of this syscall */
285 #define QUAL_RAW 0x008 /* print all args in hex for this syscall */
286 #define QUAL_INJECT 0x010 /* tamper with this system call on purpose */
288 #define DEFAULT_QUAL_FLAGS (QUAL_TRACE | QUAL_ABBREV | QUAL_VERBOSE)
290 #define entering(tcp) (!((tcp)->flags & TCB_INSYSCALL))
291 #define exiting(tcp) ((tcp)->flags & TCB_INSYSCALL)
292 #define syserror(tcp) ((tcp)->u_error != 0)
293 #define traced(tcp) ((tcp)->qual_flg & QUAL_TRACE)
294 #define verbose(tcp) ((tcp)->qual_flg & QUAL_VERBOSE)
295 #define abbrev(tcp) ((tcp)->qual_flg & QUAL_ABBREV)
296 #define raw(tcp) ((tcp)->qual_flg & QUAL_RAW)
297 #define inject(tcp) ((tcp)->qual_flg & QUAL_INJECT)
298 #define filtered(tcp) ((tcp)->flags & TCB_FILTERED)
299 #define hide_log(tcp) ((tcp)->flags & TCB_HIDE_LOG)
300 #define syscall_tampered(tcp) ((tcp)->flags & TCB_TAMPERED)
301 #define recovering(tcp) ((tcp)->flags & TCB_RECOVERING)
302 #define inject_delay_exit(tcp) ((tcp)->flags & TCB_INJECT_DELAY_EXIT)
303 #define syscall_delayed(tcp) ((tcp)->flags & TCB_DELAYED)
304 #define syscall_tampered_nofail(tcp) ((tcp)->flags & TCB_TAMPERED_NO_FAIL)
308 extern const struct xlat addrfams[];
310 /** Protocol hardware identifiers array, sorted, defined in sockaddr.c. */
311 extern const struct xlat arp_hardware_types[];
312 /** Protocol hardware identifiers array size without terminating record. */
313 extern const size_t arp_hardware_types_size;
315 extern const struct xlat at_flags[];
316 extern const struct xlat clocknames[];
317 extern const struct xlat dirent_types[];
319 /** Ethernet protocols list, sorted, defined in sockaddr.c. */
320 extern const struct xlat ethernet_protocols[];
321 /** Ethernet protocols array size without terminating record. */
322 extern const size_t ethernet_protocols_size;
324 /** IP protocols list, sorted, defined in net.c. */
325 extern const struct xlat inet_protocols[];
326 /** IP protocols array size without terminating record. */
327 extern const size_t inet_protocols_size;
329 extern const struct xlat evdev_abs[];
330 /** Number of elements in evdev_abs array without the terminating record. */
331 extern const size_t evdev_abs_size;
333 extern const struct xlat iffflags[];
334 extern const struct xlat ip_type_of_services[];
335 extern const struct xlat ipc_private[];
336 extern const struct xlat msg_flags[];
337 extern const struct xlat netlink_protocols[];
338 extern const struct xlat nl_netfilter_msg_types[];
339 extern const struct xlat nl_route_types[];
340 extern const struct xlat open_access_modes[];
341 extern const struct xlat open_mode_flags[];
342 extern const struct xlat resource_flags[];
343 extern const struct xlat routing_scopes[];
344 extern const struct xlat routing_table_ids[];
345 extern const struct xlat routing_types[];
346 extern const struct xlat seccomp_filter_flags[];
347 extern const struct xlat seccomp_ret_action[];
348 extern const struct xlat setns_types[];
349 extern const struct xlat sg_io_info[];
350 extern const struct xlat socketlayers[];
351 extern const struct xlat socktypes[];
352 extern const struct xlat tcp_state_flags[];
353 extern const struct xlat tcp_states[];
354 extern const struct xlat whence_codes[];
356 /* Format of syscall return values */
357 #define RVAL_UDECIMAL 000 /* unsigned decimal format */
358 #define RVAL_HEX 001 /* hex format */
359 #define RVAL_OCTAL 002 /* octal format */
360 #define RVAL_FD 010 /* file descriptor */
361 #define RVAL_MASK 013 /* mask for these values */
363 #define RVAL_STR 020 /* Print `auxstr' field after return val */
364 #define RVAL_NONE 040 /* Print nothing */
366 #define RVAL_DECODED 0100 /* syscall decoding finished */
367 #define RVAL_IOCTL_DECODED 0200 /* ioctl sub-parser successfully decoded
370 #define IOCTL_NUMBER_UNKNOWN 0
371 #define IOCTL_NUMBER_HANDLED 1
372 #define IOCTL_NUMBER_STOP_LOOKUP 010
374 #define indirect_ipccall(tcp) (tcp->s_ent->sys_flags & TRACE_INDIRECT_SUBCALL)
385 extern enum sock_proto get_proto_by_name(const char *);
398 extern cflag_t cflag;
401 extern bool count_wallclock;
402 extern unsigned int qflag;
403 extern bool not_failing_only;
404 extern unsigned int show_fd_path;
405 /* are we filtering traces based on paths? */
406 extern struct path_set {
407 const char **paths_selected;
411 #define tracing_paths (global_path_set.num_selected != 0)
412 extern unsigned xflag;
413 extern unsigned followfork;
414 #ifdef ENABLE_STACKTRACE
415 /* if this is true do the stack trace for every system call */
416 extern bool stack_trace_enabled;
418 extern unsigned ptrace_setoptions;
419 extern unsigned max_strlen;
420 extern unsigned os_release;
421 #undef KERNEL_VERSION
422 #define KERNEL_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
424 extern int read_int_from_file(struct tcb *, const char *, int *);
426 extern void set_sortby(const char *);
427 extern void set_overhead(int);
428 extern void print_pc(struct tcb *);
430 extern int syscall_entering_decode(struct tcb *);
431 extern int syscall_entering_trace(struct tcb *, unsigned int *);
432 extern void syscall_entering_finish(struct tcb *, int);
434 extern int syscall_exiting_decode(struct tcb *, struct timespec *);
435 extern int syscall_exiting_trace(struct tcb *, struct timespec *, int);
436 extern void syscall_exiting_finish(struct tcb *);
438 extern void count_syscall(struct tcb *, const struct timespec *);
439 extern void call_summary(FILE *);
441 extern void clear_regs(struct tcb *tcp);
442 extern int get_scno(struct tcb *);
443 extern kernel_ulong_t get_rt_sigframe_addr(struct tcb *);
446 * Convert a (shuffled) syscall number to the corresponding syscall name.
448 * @param scno Syscall number.
449 * @return String literal corresponding to the syscall number in case latter
450 * is valid; NULL otherwise.
452 extern const char *syscall_name(kernel_ulong_t scno);
454 * Convert a syscall name to the corresponding (shuffled) syscall number.
456 * @param s Syscall name.
457 * @param p Personality.
458 * @param start From which position in syscall entry table resume the search.
459 * @return Shuffled syscall number (ready to use against sysent_vec)
460 * if syscall name is found; -1 otherwise.
462 extern kernel_long_t scno_by_name(const char *s, unsigned p,
463 kernel_long_t start);
465 * Shuffle syscall numbers so that we don't have huge gaps in syscall table.
466 * The shuffling should be an involution: shuffle_scno(shuffle_scno(n)) == n.
468 * @param scno Raw or shuffled syscall number.
469 * @return Shuffled or raw syscall number, respectively.
471 extern kernel_ulong_t shuffle_scno(kernel_ulong_t scno);
472 extern const char *err_name(unsigned long err);
474 extern bool is_erestart(struct tcb *);
475 extern void temporarily_clear_syserror(struct tcb *);
476 extern void restore_cleared_syserror(struct tcb *);
478 extern void *get_tcb_priv_data(const struct tcb *);
479 extern int set_tcb_priv_data(struct tcb *, void *priv_data,
480 void (*free_priv_data)(void *));
481 extern void free_tcb_priv_data(struct tcb *);
483 static inline unsigned long get_tcb_priv_ulong(const struct tcb *tcp)
485 return (unsigned long) get_tcb_priv_data(tcp);
488 static inline int set_tcb_priv_ulong(struct tcb *tcp, unsigned long val)
490 return set_tcb_priv_data(tcp, (void *) val, 0);
494 * @return 0 on success, -1 on error.
497 umoven(struct tcb *, kernel_ulong_t addr, unsigned int len, void *laddr);
498 #define umove(pid, addr, objp) \
499 umoven((pid), (addr), sizeof(*(objp)), (void *) (objp))
502 * @return true on success, false on error.
505 tfetch_mem64(struct tcb *, uint64_t addr, unsigned int len, void *laddr);
508 tfetch_mem(struct tcb *tcp, const kernel_ulong_t addr,
509 unsigned int len, void *laddr)
511 return tfetch_mem64(tcp, addr, len, laddr);
513 #define tfetch_obj(pid, addr, objp) \
514 tfetch_mem((pid), (addr), sizeof(*(objp)), (void *) (objp))
517 * @return true on success, false on error.
520 tfetch_mem64_ignore_syserror(struct tcb *, uint64_t addr,
521 unsigned int len, void *laddr);
524 tfetch_mem_ignore_syserror(struct tcb *tcp, const kernel_ulong_t addr,
525 unsigned int len, void *laddr)
527 return tfetch_mem64_ignore_syserror(tcp, addr, len, laddr);
531 * @return 0 on success, -1 on error (and print addr).
534 umoven_or_printaddr64(struct tcb *, uint64_t addr,
535 unsigned int len, void *laddr);
536 #define umove_or_printaddr64(pid, addr, objp) \
537 umoven_or_printaddr64((pid), (addr), sizeof(*(objp)), (void *) (objp))
540 umoven_or_printaddr(struct tcb *tcp, const kernel_ulong_t addr,
541 unsigned int len, void *laddr)
543 return umoven_or_printaddr64(tcp, addr, len, laddr);
545 #define umove_or_printaddr(pid, addr, objp) \
546 umoven_or_printaddr((pid), (addr), sizeof(*(objp)), (void *) (objp))
549 * @return 0 on success, -1 on error (and print addr).
552 umoven_or_printaddr64_ignore_syserror(struct tcb *, uint64_t addr,
553 unsigned int len, void *laddr);
554 #define umove_or_printaddr64_ignore_syserror(pid, addr, objp) \
555 umoven_or_printaddr64_ignore_syserror((pid), (addr), sizeof(*(objp)), \
559 umoven_or_printaddr_ignore_syserror(struct tcb *tcp, const kernel_ulong_t addr,
560 unsigned int len, void *laddr)
562 return umoven_or_printaddr64_ignore_syserror(tcp, addr, len, laddr);
564 #define umove_or_printaddr_ignore_syserror(pid, addr, objp) \
565 umoven_or_printaddr_ignore_syserror((pid), (addr), sizeof(*(objp)), \
569 * @return strlen + 1 on success, 0 on success and no NUL seen, -1 on error.
572 umovestr(struct tcb *, kernel_ulong_t addr, unsigned int len, char *laddr);
574 extern int upeek(struct tcb *tcp, unsigned long, kernel_ulong_t *);
575 extern int upoke(struct tcb *tcp, unsigned long, kernel_ulong_t);
577 #if HAVE_ARCH_GETRVAL2
578 extern long getrval2(struct tcb *);
581 extern const char *signame(const int);
582 extern void pathtrace_select_set(const char *, struct path_set *);
583 extern bool pathtrace_match_set(struct tcb *, struct path_set *);
586 pathtrace_select(const char *path)
588 return pathtrace_select_set(path, &global_path_set);
592 pathtrace_match(struct tcb *tcp)
594 return pathtrace_match_set(tcp, &global_path_set);
597 extern int getfdpath(struct tcb *, int, char *, unsigned);
598 extern unsigned long getfdinode(struct tcb *, int);
599 extern enum sock_proto getfdproto(struct tcb *, int);
601 extern const char *xlookup(const struct xlat *, const uint64_t);
602 extern const char *xlat_search(const struct xlat *, const size_t, const uint64_t);
603 extern const char *xlat_idx(const struct xlat *xlat, size_t nmemb, uint64_t val);
606 struct dyxlat *dyxlat_alloc(size_t nmemb);
607 void dyxlat_free(struct dyxlat *);
608 const struct xlat *dyxlat_get(const struct dyxlat *);
609 void dyxlat_add_pair(struct dyxlat *, uint64_t val, const char *str, size_t len);
611 const struct xlat *genl_families_xlat(struct tcb *tcp);
613 extern unsigned long get_pagesize(void);
614 extern int next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits);
617 * Returns STR if it does not start with PREFIX,
618 * or a pointer to the first char in STR after PREFIX.
619 * The length of PREFIX is specified by PREFIX_LEN.
621 static inline const char *
622 str_strip_prefix_len(const char *str, const char *prefix, size_t prefix_len)
624 return strncmp(str, prefix, prefix_len) ? str : str + prefix_len;
627 #define STR_STRIP_PREFIX(str, prefix) \
628 str_strip_prefix_len((str), (prefix), sizeof(prefix) - 1)
630 #define QUOTE_0_TERMINATED 0x01
631 #define QUOTE_OMIT_LEADING_TRAILING_QUOTES 0x02
632 #define QUOTE_OMIT_TRAILING_0 0x08
633 #define QUOTE_FORCE_HEX 0x10
634 #define QUOTE_EMIT_COMMENT 0x20
636 extern int string_quote(const char *, char *, unsigned int, unsigned int,
637 const char *escape_chars);
638 extern int print_quoted_string_ex(const char *, unsigned int, unsigned int,
639 const char *escape_chars);
640 extern int print_quoted_string(const char *, unsigned int, unsigned int);
641 extern int print_quoted_cstring(const char *, unsigned int);
643 /* a refers to the lower numbered u_arg,
644 * b refers to the higher numbered u_arg
646 #ifdef WORDS_BIGENDIAN
647 # define ULONG_LONG(a, b) \
648 ((unsigned long long)(unsigned)(b) | ((unsigned long long)(a)<<32))
650 # define ULONG_LONG(a, b) \
651 ((unsigned long long)(unsigned)(a) | ((unsigned long long)(b)<<32))
653 extern int getllval(struct tcb *, unsigned long long *, int);
654 extern int printllval(struct tcb *, const char *, int)
655 ATTRIBUTE_FORMAT((printf, 2, 0));
657 extern void printaddr64(uint64_t addr);
660 printaddr(const kernel_ulong_t addr)
665 #define xlat_verbose(style_) ((style_) & XLAT_STYLE_VERBOSITY_MASK)
666 #define xlat_format(style_) ((style_) & XLAT_STYLE_FORMAT_MASK)
668 extern enum xlat_style xlat_verbosity;
670 extern int printxvals_ex(uint64_t val, const char *dflt,
671 enum xlat_style, const struct xlat *, ...)
673 #define printxvals(val_, dflt_, ...) \
674 printxvals_ex((val_), (dflt_), XLAT_STYLE_DEFAULT, __VA_ARGS__)
676 extern int printxval_searchn_ex(const struct xlat *, size_t xlat_size,
677 uint64_t val, const char *dflt,
681 printxval_searchn(const struct xlat *xlat, size_t xlat_size, uint64_t val,
684 return printxval_searchn_ex(xlat, xlat_size, val, dflt,
689 * Wrapper around printxval_searchn that passes ARRAY_SIZE - 1
690 * as the array size, as all arrays are XLAT_END-terminated and
691 * printxval_searchn expects a size without the terminating record.
693 #define printxval_search(xlat__, val__, dflt__) \
694 printxval_searchn(xlat__, ARRAY_SIZE(xlat__) - 1, val__, dflt__)
695 #define printxval_search_ex(xlat__, val__, dflt__) \
696 printxval_searchn_ex((xlat__), ARRAY_SIZE(xlat__) - 1, (val__), \
697 (dflt__), XLAT_STYLE_DEFAULT)
699 extern int printxval_indexn_ex(const struct xlat *, size_t xlat_size,
700 uint64_t val, const char *dflt, enum xlat_style);
703 printxval_indexn(const struct xlat *xlat, size_t xlat_size, uint64_t val,
706 return printxval_indexn_ex(xlat, xlat_size, val, dflt,
710 #define printxval_index(xlat__, val__, dflt__) \
711 printxval_indexn(xlat__, ARRAY_SIZE(xlat__) - 1, val__, dflt__)
712 #define printxval_index_ex(xlat__, val__, dflt__) \
713 printxval_indexn_ex((xlat__), ARRAY_SIZE(xlat__) - 1, (val__), \
714 (dflt__), XLAT_STYLE_DEFAULT)
716 extern int sprintxval_ex(char *buf, size_t size, const struct xlat *,
717 unsigned int val, const char *dflt, enum xlat_style);
720 sprintxval(char *buf, size_t size, const struct xlat *xlat, unsigned int val,
723 return sprintxval_ex(buf, size, xlat, val, dflt, XLAT_STYLE_DEFAULT);
726 extern void printxval_dispatch_ex(const struct xlat *, size_t xlat_size,
727 uint64_t val, const char *dflt,
728 enum xlat_type, enum xlat_style);
730 printxval_dispatch(const struct xlat *xlat, size_t xlat_size, uint64_t val,
731 const char *dflt, enum xlat_type xt)
733 return printxval_dispatch_ex(xlat, xlat_size, val, dflt, xt,
737 /** Print a value in accordance with xlat formatting settings. */
738 extern void print_xlat_ex(uint64_t val, const char *str, enum xlat_style style);
739 #define print_xlat(val_) \
740 print_xlat_ex((val_), #val_, XLAT_STYLE_DEFAULT)
741 #define print_xlat32(val_) \
742 print_xlat_ex((uint32_t) (val_), #val_, XLAT_STYLE_DEFAULT)
743 #define print_xlat_u(val_) \
744 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_U)
745 #define print_xlat_d(val_) \
746 print_xlat_ex((val_), #val_, XLAT_STYLE_FMT_D)
748 extern int printargs(struct tcb *);
749 extern int printargs_u(struct tcb *);
750 extern int printargs_d(struct tcb *);
752 extern int printflags_ex(uint64_t flags, const char *dflt,
753 enum xlat_style, const struct xlat *, ...)
755 extern const char *sprintflags_ex(const char *prefix, const struct xlat *,
756 uint64_t flags, enum xlat_style);
758 static inline const char *
759 sprintflags(const char *prefix, const struct xlat *xlat, uint64_t flags)
761 return sprintflags_ex(prefix, xlat, flags, XLAT_STYLE_DEFAULT);
764 extern const char *sprinttime(long long sec);
765 extern const char *sprinttime_nsec(long long sec, unsigned long long nsec);
766 extern const char *sprinttime_usec(long long sec, unsigned long long usec);
768 extern const char *sprint_mac_addr(const uint8_t addr[], size_t size);
770 extern void print_symbolic_mode_t(unsigned int);
771 extern void print_numeric_umode_t(unsigned short);
772 extern void print_numeric_long_umask(unsigned long);
773 extern void print_dev_t(unsigned long long dev);
774 extern void print_abnormal_hi(kernel_ulong_t);
776 extern bool print_int32_array_member(struct tcb *, void *elem_buf,
777 size_t elem_size, void *data);
778 extern bool print_uint32_array_member(struct tcb *, void *elem_buf,
779 size_t elem_size, void *data);
780 extern bool print_uint64_array_member(struct tcb *, void *elem_buf,
781 size_t elem_size, void *data);
783 typedef bool (*tfetch_mem_fn)(struct tcb *, kernel_ulong_t addr,
784 unsigned int size, void *dest);
785 typedef bool (*print_fn)(struct tcb *, void *elem_buf,
786 size_t elem_size, void *opaque_data);
788 enum print_array_flag_bits {
789 PAF_PRINT_INDICES_BIT = XLAT_STYLE_SPEC_BITS + 1,
790 PAF_INDEX_XLAT_SORTED_BIT,
791 PAF_INDEX_XLAT_VALUE_INDEXED_BIT,
794 #define FLAG_(name_) name_ = 1 << name_##_BIT
796 enum print_array_flags {
797 FLAG_(PAF_PRINT_INDICES),
798 FLAG_(PAF_INDEX_XLAT_SORTED),
799 FLAG_(PAF_INDEX_XLAT_VALUE_INDEXED),
805 * @param flags Combination of xlat style settings and additional flags from
806 * enum print_array_flags.
809 print_array_ex(struct tcb *,
810 kernel_ulong_t start_addr,
814 tfetch_mem_fn tfetch_mem_func,
818 const struct xlat *index_xlat,
819 size_t index_xlat_size,
820 const char *index_dflt);
823 print_array(struct tcb *const tcp,
824 const kernel_ulong_t start_addr,
826 void *const elem_buf,
827 const size_t elem_size,
828 tfetch_mem_fn tfetch_mem_func,
830 void *const opaque_data)
832 return print_array_ex(tcp, start_addr, nmemb, elem_buf, elem_size,
833 tfetch_mem_func, print_func, opaque_data,
837 extern kernel_ulong_t *
838 fetch_indirect_syscall_args(struct tcb *, kernel_ulong_t addr, unsigned int n_args);
841 dumpiov_in_msghdr(struct tcb *, kernel_ulong_t addr, kernel_ulong_t data_size);
844 dumpiov_in_mmsghdr(struct tcb *, kernel_ulong_t addr);
847 dumpiov_upto(struct tcb *, int len, kernel_ulong_t addr, kernel_ulong_t data_size);
850 dumpstr(struct tcb *, kernel_ulong_t addr, int len);
853 printstr_ex(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len,
854 unsigned int user_style);
857 printpathn(struct tcb *, kernel_ulong_t addr, unsigned int n);
860 printpath(struct tcb *, kernel_ulong_t addr);
862 #define TIMESPEC_TEXT_BUFSIZE \
863 (sizeof(long long) * 3 * 2 + sizeof("{tv_sec=-, tv_nsec=}"))
864 extern void printfd(struct tcb *, int);
865 extern void print_sockaddr(const void *sa, int len);
867 print_inet_addr(int af, const void *addr, unsigned int len, const char *var_name);
869 decode_inet_addr(struct tcb *, kernel_ulong_t addr,
870 unsigned int len, int family, const char *var_name);
871 extern const char *get_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
872 extern bool print_sockaddr_by_inode(struct tcb *, int fd, unsigned long inode);
873 extern void print_dirfd(struct tcb *, int);
876 decode_sockaddr(struct tcb *, kernel_ulong_t addr, int addrlen);
878 extern void printuid(const char *, const unsigned int);
881 print_sigset_addr_len(struct tcb *, kernel_ulong_t addr, kernel_ulong_t len);
883 print_sigset_addr(struct tcb *, kernel_ulong_t addr);
885 extern const char *sprintsigmask_n(const char *, const void *, unsigned int);
886 #define tprintsigmask_addr(prefix, mask) \
887 tprints(sprintsigmask_n((prefix), (mask), sizeof(mask)))
888 extern void printsignal(int);
891 tprint_iov_upto(struct tcb *, kernel_ulong_t len, kernel_ulong_t addr,
892 enum iov_decode, kernel_ulong_t data_size);
895 decode_netlink(struct tcb *, int fd, kernel_ulong_t addr, kernel_ulong_t len);
897 extern void tprint_open_modes(unsigned int);
898 extern const char *sprint_open_modes(unsigned int);
901 decode_seccomp_fprog(struct tcb *, kernel_ulong_t addr);
904 print_seccomp_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
907 decode_sock_fprog(struct tcb *, kernel_ulong_t addr);
910 print_sock_fprog(struct tcb *, kernel_ulong_t addr, unsigned short len);
913 extern void print_struct_stat(struct tcb *, const struct strace_stat *const st);
915 struct strace_statfs;
916 struct strace_keyctl_kdf_params;
919 print_struct_statfs(struct tcb *, kernel_ulong_t addr);
922 print_struct_statfs64(struct tcb *, kernel_ulong_t addr, kernel_ulong_t size);
925 fetch_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
927 print_perf_event_attr(struct tcb *const tcp, const kernel_ulong_t addr);
929 extern void print_ifindex(unsigned int);
931 extern void print_bpf_filter_code(const uint16_t code, bool extended);
933 extern void qualify(const char *);
934 extern unsigned int qual_flags(const unsigned int);
936 #define DECL_IOCTL(name) \
938 name ## _ioctl(struct tcb *, unsigned int request, kernel_ulong_t arg) \
939 /* End of DECL_IOCTL definition. */
955 extern int decode_sg_io_v4(struct tcb *, const kernel_ulong_t arg);
956 extern void print_evdev_ff_type(const kernel_ulong_t val);
960 typedef bool (*netlink_decoder_t)(struct tcb *, const struct nlmsghdr *,
961 kernel_ulong_t addr, unsigned int len);
963 #define DECL_NETLINK(name) \
965 decode_netlink_ ## name(struct tcb *, const struct nlmsghdr *, \
966 kernel_ulong_t addr, unsigned int len) \
967 /* End of DECL_NETLINK definition. */
969 DECL_NETLINK(crypto);
970 DECL_NETLINK(netfilter);
972 DECL_NETLINK(selinux);
973 DECL_NETLINK(sock_diag);
976 decode_netlink_kobject_uevent(struct tcb *, kernel_ulong_t addr,
979 extern int ts_nz(const struct timespec *);
980 extern int ts_cmp(const struct timespec *, const struct timespec *);
981 extern double ts_float(const struct timespec *);
982 extern void ts_add(struct timespec *, const struct timespec *, const struct timespec *);
983 extern void ts_sub(struct timespec *, const struct timespec *, const struct timespec *);
984 extern void ts_mul(struct timespec *, const struct timespec *, int);
985 extern void ts_div(struct timespec *, const struct timespec *, int);
987 #ifdef ENABLE_STACKTRACE
988 extern void unwind_init(void);
989 extern void unwind_tcb_init(struct tcb *);
990 extern void unwind_tcb_fin(struct tcb *);
991 extern void unwind_tcb_print(struct tcb *);
992 extern void unwind_tcb_capture(struct tcb *);
995 #ifdef HAVE_LINUX_KVM_H
996 extern void kvm_run_structure_decoder_init(void);
997 extern void kvm_vcpu_info_free(struct tcb *);
1001 printstrn(struct tcb *tcp, kernel_ulong_t addr, kernel_ulong_t len)
1003 return printstr_ex(tcp, addr, len, 0);
1007 printstr(struct tcb *tcp, kernel_ulong_t addr)
1009 return printstr_ex(tcp, addr, -1, QUOTE_0_TERMINATED);
1013 printflags64(const struct xlat *x, uint64_t flags, const char *dflt)
1015 return printflags_ex(flags, dflt, XLAT_STYLE_DEFAULT, x, NULL);
1019 printflags(const struct xlat *x, unsigned int flags, const char *dflt)
1021 return printflags64(x, flags, dflt);
1025 printxval64(const struct xlat *x, const uint64_t val, const char *dflt)
1027 return printxvals(val, dflt, x, NULL);
1031 printxval(const struct xlat *x, const unsigned int val, const char *dflt)
1033 return printxvals(val, dflt, x, NULL);
1037 printxval64_u(const struct xlat *x, const uint64_t val, const char *dflt)
1039 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
1043 printxval_u(const struct xlat *x, const unsigned int val, const char *dflt)
1045 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_U, x, NULL);
1049 printxval64_d(const struct xlat *x, const int64_t val, const char *dflt)
1051 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
1055 printxval_d(const struct xlat *x, const int val, const char *dflt)
1057 return printxvals_ex(val, dflt, XLAT_STYLE_FMT_D, x, NULL);
1061 tprint_iov(struct tcb *tcp, kernel_ulong_t len, kernel_ulong_t addr,
1062 enum iov_decode decode_iov)
1064 tprint_iov_upto(tcp, len, addr, decode_iov, -1);
1069 int tv_sec, tv_usec;
1072 extern void print_timeval32_t(const timeval32_t *);
1073 extern void printrusage32(struct tcb *, kernel_ulong_t);
1074 extern const char *sprint_timeval32(struct tcb *, kernel_ulong_t addr);
1075 extern void print_timeval32(struct tcb *, kernel_ulong_t addr);
1076 extern void print_timeval32_utimes(struct tcb *, kernel_ulong_t addr);
1077 extern void print_itimerval32(struct tcb *, kernel_ulong_t addr);
1080 #ifdef HAVE_STRUCT_USER_DESC
1082 * Filter what to print from the point of view of the get_thread_area syscall.
1083 * Kernel copies only entry_number field at first and then tries to write the
1086 enum user_desc_print_filter {
1087 /* Print the "entering" part of struct user_desc - entry_number. */
1088 USER_DESC_ENTERING = 1,
1089 /* Print the "exiting" part of the structure. */
1090 USER_DESC_EXITING = 2,
1091 USER_DESC_BOTH = USER_DESC_ENTERING | USER_DESC_EXITING,
1094 extern void print_user_desc(struct tcb *, kernel_ulong_t addr,
1095 enum user_desc_print_filter filter);
1098 /* Strace log generation machinery.
1100 * printing_tcp: tcb which has incomplete line being printed right now.
1101 * NULL if last line has been completed ('\n'-terminated).
1102 * printleader(tcp) examines it, finishes incomplete line if needed,
1103 * the sets it to tcp.
1104 * line_ended() clears printing_tcp and resets ->curcol = 0.
1105 * tcp->curcol == 0 check is also used to detect completeness
1106 * of last line, since in -ff mode just checking printing_tcp for NULL
1109 * If you change this code, test log generation in both -f and -ff modes
1111 * strace -oLOG -f[f] test/threaded_execve
1112 * strace -oLOG -f[f] test/sigkill_rain
1113 * strace -oLOG -f[f] -p "`pidof web_browser`"
1115 extern struct tcb *printing_tcp;
1116 extern void printleader(struct tcb *);
1117 extern void line_ended(void);
1118 extern void tabto(void);
1119 extern void tprintf(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1120 extern void tprints(const char *str);
1121 extern void tprintf_comment(const char *fmt, ...) ATTRIBUTE_FORMAT((printf, 1, 2));
1122 extern void tprints_comment(const char *str);
1125 printaddr_comment(const kernel_ulong_t addr)
1127 tprintf_comment("%#llx", (unsigned long long) addr);
1131 print_mac_addr(const char *prefix, const uint8_t addr[], size_t size)
1134 tprints(sprint_mac_addr(addr, size));
1137 #if SUPPORTED_PERSONALITIES > 1
1138 extern void set_personality(unsigned int personality);
1139 extern unsigned current_personality;
1141 # define set_personality(personality) ((void)0)
1142 # define current_personality 0
1145 #if SUPPORTED_PERSONALITIES == 1
1146 # define current_wordsize PERSONALITY0_WORDSIZE
1147 # define current_klongsize PERSONALITY0_KLONGSIZE
1149 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_WORDSIZE == PERSONALITY1_WORDSIZE
1150 # define current_wordsize PERSONALITY0_WORDSIZE
1152 extern unsigned current_wordsize;
1154 # if SUPPORTED_PERSONALITIES == 2 && PERSONALITY0_KLONGSIZE == PERSONALITY1_KLONGSIZE
1155 # define current_klongsize PERSONALITY0_KLONGSIZE
1157 extern unsigned current_klongsize;
1161 #define max_addr() (~0ULL >> ((8 - current_wordsize) * 8))
1162 #define max_kaddr() (~0ULL >> ((8 - current_klongsize) * 8))
1165 * When u64 is interpreted by the kernel as an address, there is a difference
1166 * in behaviour between 32-bit and 64-bit kernel in the way u64_to_user_ptr
1167 * works (32-bit kernel trims higher bits during conversion which may result
1168 * to a valid address). Since 32-bit strace cannot figure out what kind of
1169 * kernel the tracee is running on, it has to account for both possibilities.
1171 #if CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL
1174 * Print raw 64-bit value as an address if it's too big to fit in strace's
1178 print_big_u64_addr(const uint64_t addr)
1180 if (sizeof(kernel_long_t) < 8 && addr > max_kaddr()) {
1185 #else /* !CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1186 # define print_big_u64_addr(addr_) ((void) 0)
1187 #endif /* CAN_ARCH_BE_COMPAT_ON_64BIT_KERNEL */
1189 #if SIZEOF_KERNEL_LONG_T > 4 \
1190 && (SIZEOF_LONG < SIZEOF_KERNEL_LONG_T || !defined(current_wordsize))
1191 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 1
1193 # define ANY_WORDSIZE_LESS_THAN_KERNEL_LONG 0
1196 #define DECL_PRINTNUM(name) \
1198 printnum_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1199 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1200 /* End of DECL_PRINTNUM definition. */
1202 DECL_PRINTNUM(short);
1204 DECL_PRINTNUM(int64);
1205 #undef DECL_PRINTNUM
1207 #define DECL_PRINTNUM_ADDR(name) \
1209 printnum_addr_ ## name(struct tcb *, kernel_ulong_t addr) \
1210 /* End of DECL_PRINTNUM_ADDR definition. */
1212 DECL_PRINTNUM_ADDR(int);
1213 DECL_PRINTNUM_ADDR(int64);
1214 #undef DECL_PRINTNUM_ADDR
1216 #ifndef current_wordsize
1218 printnum_long_int(struct tcb *, kernel_ulong_t addr,
1219 const char *fmt_long, const char *fmt_int)
1220 ATTRIBUTE_FORMAT((printf, 3, 0))
1221 ATTRIBUTE_FORMAT((printf, 4, 0));
1223 extern bool printnum_addr_long_int(struct tcb *, kernel_ulong_t addr);
1226 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1228 return printnum_long_int(tcp, addr, "%" PRId64, "%d");
1232 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1234 return printnum_long_int(tcp, addr, "%" PRIu64, "%u");
1238 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1240 return printnum_addr_long_int(tcp, addr);
1243 #elif current_wordsize > 4
1246 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1248 return printnum_int64(tcp, addr, "%" PRId64);
1252 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1254 return printnum_int64(tcp, addr, "%" PRIu64);
1258 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1260 return printnum_addr_int64(tcp, addr);
1263 #else /* current_wordsize == 4 */
1266 printnum_slong(struct tcb *tcp, kernel_ulong_t addr)
1268 return printnum_int(tcp, addr, "%d");
1272 printnum_ulong(struct tcb *tcp, kernel_ulong_t addr)
1274 return printnum_int(tcp, addr, "%u");
1278 printnum_ptr(struct tcb *tcp, kernel_ulong_t addr)
1280 return printnum_addr_int(tcp, addr);
1285 #ifndef current_klongsize
1286 extern bool printnum_addr_klong_int(struct tcb *, kernel_ulong_t addr);
1289 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1291 return printnum_addr_klong_int(tcp, addr);
1294 #elif current_klongsize > 4
1297 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1299 return printnum_addr_int64(tcp, addr);
1302 #else /* current_klongsize == 4 */
1305 printnum_kptr(struct tcb *tcp, kernel_ulong_t addr)
1307 return printnum_addr_int(tcp, addr);
1312 #define DECL_PRINTPAIR(name) \
1314 printpair_ ## name(struct tcb *, kernel_ulong_t addr, const char *fmt) \
1315 ATTRIBUTE_FORMAT((printf, 3, 0)) \
1316 /* End of DECL_PRINTPAIR definition. */
1318 DECL_PRINTPAIR(int);
1319 DECL_PRINTPAIR(int64);
1320 #undef DECL_PRINTPAIR
1322 static inline kernel_long_t
1323 truncate_klong_to_current_wordsize(const kernel_long_t v)
1325 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1326 if (current_wordsize < sizeof(v)) {
1335 static inline kernel_ulong_t
1336 truncate_kulong_to_current_wordsize(const kernel_ulong_t v)
1338 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
1339 if (current_wordsize < sizeof(v)) {
1340 return (unsigned int) v;
1349 * Cast a pointer or a pointer-sized integer to kernel_ulong_t.
1351 #define ptr_to_kulong(v) ((kernel_ulong_t) (unsigned long) (v))
1354 * Zero-extend a signed integer type to unsigned long long.
1356 #define zero_extend_signed_to_ull(v) \
1357 (sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
1358 sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
1359 sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
1360 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
1361 (unsigned long long) (v))
1364 * Sign-extend an unsigned integer type to long long.
1366 #define sign_extend_unsigned_to_ll(v) \
1367 (sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
1368 sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
1369 sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
1370 sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
1373 extern const char *const errnoent[];
1374 extern const char *const signalent[];
1375 extern const unsigned int nerrnos;
1376 extern const unsigned int nsignals;
1378 extern const struct_sysent sysent0[];
1379 extern const struct_ioctlent ioctlent0[];
1381 extern const char *const personality_names[];
1382 /* Personality designators to be used for specifying personality */
1383 extern const char *const personality_designators[];
1385 #if SUPPORTED_PERSONALITIES > 1
1386 extern const struct_sysent *sysent;
1387 extern const struct_ioctlent *ioctlent;
1389 # define sysent sysent0
1390 # define ioctlent ioctlent0
1393 extern unsigned nsyscalls;
1394 extern unsigned nioctlents;
1396 extern const unsigned int nsyscall_vec[SUPPORTED_PERSONALITIES];
1397 extern const struct_sysent *const sysent_vec[SUPPORTED_PERSONALITIES];
1398 extern struct inject_opts *inject_vec[SUPPORTED_PERSONALITIES];
1400 #ifdef IN_MPERS_BOOTSTRAP
1401 /* Transform multi-line MPERS_PRINTER_DECL statements to one-liners. */
1402 # define MPERS_PRINTER_DECL(type, name, ...) MPERS_PRINTER_DECL(type, name, __VA_ARGS__)
1403 #else /* !IN_MPERS_BOOTSTRAP */
1404 # if SUPPORTED_PERSONALITIES > 1
1405 # include "printers.h"
1407 # include "native_printer_decls.h"
1409 # define MPERS_PRINTER_DECL(type, name, ...) type MPERS_FUNC_NAME(name)(__VA_ARGS__)
1410 #endif /* !IN_MPERS_BOOTSTRAP */
1412 /* Checks that sysent[scno] is not out of range. */
1414 scno_in_range(kernel_ulong_t scno)
1416 return scno < nsyscalls;
1420 * Checks whether scno is not out of range,
1421 * its corresponding sysent[scno].sys_func is non-NULL,
1422 * and its sysent[scno].sys_flags has no TRACE_INDIRECT_SUBCALL flag set.
1425 scno_is_valid(kernel_ulong_t scno)
1427 return scno_in_range(scno)
1428 && sysent[scno].sys_func
1429 && !(sysent[scno].sys_flags & TRACE_INDIRECT_SUBCALL);
1432 #define MPERS_FUNC_NAME__(prefix, name) prefix ## name
1433 #define MPERS_FUNC_NAME_(prefix, name) MPERS_FUNC_NAME__(prefix, name)
1434 #define MPERS_FUNC_NAME(name) MPERS_FUNC_NAME_(MPERS_PREFIX, name)
1436 #define SYS_FUNC_NAME(syscall_name) MPERS_FUNC_NAME(syscall_name)
1438 #define SYS_FUNC(syscall_name) int SYS_FUNC_NAME(sys_ ## syscall_name)(struct tcb *tcp)
1440 #endif /* !STRACE_DEFS_H */