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) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Linux for s390 port by D.J. Barrow
8 * <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com>
9 * Copyright (c) 1999-2018 The strace developers.
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #ifdef HAVE_SYS_XATTR_H
40 # include <sys/xattr.h>
46 tv_nz(const struct timeval *a)
48 return a->tv_sec || a->tv_usec;
52 tv_cmp(const struct timeval *a, const struct timeval *b)
54 if (a->tv_sec < b->tv_sec
55 || (a->tv_sec == b->tv_sec && a->tv_usec < b->tv_usec))
57 if (a->tv_sec > b->tv_sec
58 || (a->tv_sec == b->tv_sec && a->tv_usec > b->tv_usec))
64 tv_float(const struct timeval *tv)
66 return tv->tv_sec + tv->tv_usec/1000000.0;
70 tv_add(struct timeval *tv, const struct timeval *a, const struct timeval *b)
72 tv->tv_sec = a->tv_sec + b->tv_sec;
73 tv->tv_usec = a->tv_usec + b->tv_usec;
74 if (tv->tv_usec >= 1000000) {
76 tv->tv_usec -= 1000000;
81 tv_sub(struct timeval *tv, const struct timeval *a, const struct timeval *b)
83 tv->tv_sec = a->tv_sec - b->tv_sec;
84 tv->tv_usec = a->tv_usec - b->tv_usec;
85 if (((long) tv->tv_usec) < 0) {
87 tv->tv_usec += 1000000;
92 tv_div(struct timeval *tv, const struct timeval *a, int n)
94 tv->tv_usec = (a->tv_sec % n * 1000000 + a->tv_usec + n / 2) / n;
95 tv->tv_sec = a->tv_sec / n + tv->tv_usec / 1000000;
96 tv->tv_usec %= 1000000;
100 tv_mul(struct timeval *tv, const struct timeval *a, int n)
102 tv->tv_usec = a->tv_usec * n;
103 tv->tv_sec = a->tv_sec * n + tv->tv_usec / 1000000;
104 tv->tv_usec %= 1000000;
107 #if !defined HAVE_STPCPY
109 stpcpy(char *dst, const char *src)
111 while ((*dst = *src++) != '\0')
117 /* Find a next bit which is set.
118 * Starts testing at cur_bit.
119 * Returns -1 if no more bits are set.
121 * We never touch bytes we don't need to.
122 * On big-endian, array is assumed to consist of
123 * current_wordsize wide words: for example, is current_wordsize is 4,
124 * the bytes are walked in 3,2,1,0, 7,6,5,4, 11,10,9,8 ... sequence.
125 * On little-endian machines, word size is immaterial.
128 next_set_bit(const void *bit_array, unsigned cur_bit, unsigned size_bits)
130 const unsigned endian = 1;
131 int little_endian = *(char *) (void *) &endian;
133 const uint8_t *array = bit_array;
134 unsigned pos = cur_bit / 8;
135 unsigned pos_xor_mask = little_endian ? 0 : current_wordsize-1;
141 if (cur_bit >= size_bits)
143 cur_byte = array[pos ^ pos_xor_mask];
145 cur_bit = (cur_bit + 8) & (-8);
149 bitmask = 1 << (cur_bit & 7);
151 if (cur_byte & bitmask)
154 if (cur_bit >= size_bits)
157 /* This check *can't be* optimized out: */
166 * Fetch 64bit argument at position arg_no and
167 * return the index of the next argument.
170 getllval(struct tcb *tcp, unsigned long long *val, int arg_no)
172 #if SIZEOF_KERNEL_LONG_T > 4
173 # ifndef current_klongsize
174 if (current_klongsize < SIZEOF_KERNEL_LONG_T) {
175 # if defined(AARCH64) || defined(POWERPC64)
176 /* Align arg_no to the next even number. */
177 arg_no = (arg_no + 1) & 0xe;
178 # endif /* AARCH64 || POWERPC64 */
179 *val = ULONG_LONG(tcp->u_arg[arg_no], tcp->u_arg[arg_no + 1]);
182 # endif /* !current_klongsize */
184 *val = tcp->u_arg[arg_no];
187 #else /* SIZEOF_KERNEL_LONG_T == 4 */
188 # if defined __ARM_EABI__ \
189 || defined LINUX_MIPSO32 \
192 /* Align arg_no to the next even number. */
193 arg_no = (arg_no + 1) & 0xe;
196 * The SH4 ABI does allow long longs in odd-numbered registers, but
197 * does not allow them to be split between registers and memory - and
198 * there are only four argument registers for normal functions. As a
199 * result, pread, for example, takes an extra padding argument before
200 * the offset. This was changed late in the 2.4 series (around 2.4.20).
204 # endif /* __ARM_EABI__ || LINUX_MIPSO32 || POWERPC || XTENSA || SH */
205 *val = ULONG_LONG(tcp->u_arg[arg_no], tcp->u_arg[arg_no + 1]);
213 * Print 64bit argument at position arg_no and
214 * return the index of the next argument.
217 printllval(struct tcb *tcp, const char *format, int arg_no)
219 unsigned long long val = 0;
221 arg_no = getllval(tcp, &val, arg_no);
222 tprintf(format, val);
227 printaddr(const kernel_ulong_t addr)
232 tprintf("%#" PRI_klx, addr);
235 #define DEF_PRINTNUM(name, type) \
237 printnum_ ## name(struct tcb *const tcp, const kernel_ulong_t addr, \
238 const char *const fmt) \
241 if (umove_or_printaddr(tcp, addr, &num)) \
249 #define DEF_PRINTNUM_ADDR(name, type) \
251 printnum_addr_ ## name(struct tcb *tcp, const kernel_ulong_t addr) \
254 if (umove_or_printaddr(tcp, addr, &num)) \
262 #define DEF_PRINTPAIR(name, type) \
264 printpair_ ## name(struct tcb *const tcp, const kernel_ulong_t addr, \
265 const char *const fmt) \
268 if (umove_or_printaddr(tcp, addr, &pair)) \
271 tprintf(fmt, pair[0]); \
273 tprintf(fmt, pair[1]); \
278 DEF_PRINTNUM(int, int)
279 DEF_PRINTNUM_ADDR(int, unsigned int)
280 DEF_PRINTPAIR(int, int)
281 DEF_PRINTNUM(short, short)
282 DEF_PRINTNUM(int64, uint64_t)
283 DEF_PRINTNUM_ADDR(int64, uint64_t)
284 DEF_PRINTPAIR(int64, uint64_t)
286 #ifndef current_wordsize
288 printnum_long_int(struct tcb *const tcp, const kernel_ulong_t addr,
289 const char *const fmt_long, const char *const fmt_int)
291 if (current_wordsize > sizeof(int)) {
292 return printnum_int64(tcp, addr, fmt_long);
294 return printnum_int(tcp, addr, fmt_int);
299 printnum_addr_long_int(struct tcb *tcp, const kernel_ulong_t addr)
301 if (current_wordsize > sizeof(int)) {
302 return printnum_addr_int64(tcp, addr);
304 return printnum_addr_int(tcp, addr);
307 #endif /* !current_wordsize */
309 #ifndef current_klongsize
311 printnum_addr_klong_int(struct tcb *tcp, const kernel_ulong_t addr)
313 if (current_klongsize > sizeof(int)) {
314 return printnum_addr_int64(tcp, addr);
316 return printnum_addr_int(tcp, addr);
319 #endif /* !current_klongsize */
322 * Prints time to a (static internal) buffer and returns pointer to it.
324 * @param sec Seconds since epoch.
325 * @param part_sec Amount of second parts since the start of a second.
326 * @param max_part_sec Maximum value of a valid part_sec.
327 * @param width 1 + floor(log10(max_part_sec)).
330 sprinttime_ex(const long long sec, const unsigned long long part_sec,
331 const unsigned int max_part_sec, const int width)
333 static char buf[sizeof(int) * 3 * 6 + sizeof(part_sec) * 3
336 if ((sec == 0 && part_sec == 0) || part_sec > max_part_sec)
339 time_t t = (time_t) sec;
340 struct tm *tmp = (sec == t) ? localtime(&t) : NULL;
344 size_t pos = strftime(buf, sizeof(buf), "%FT%T", tmp);
349 pos += xsnprintf(buf + pos, sizeof(buf) - pos, ".%0*llu",
352 return strftime(buf + pos, sizeof(buf) - pos, "%z", tmp) ? buf : NULL;
356 sprinttime(long long sec)
358 return sprinttime_ex(sec, 0, 0, 0);
362 sprinttime_usec(long long sec, unsigned long long usec)
364 return sprinttime_ex(sec, usec, 999999, 6);
368 sprinttime_nsec(long long sec, unsigned long long nsec)
370 return sprinttime_ex(sec, nsec, 999999999, 9);
374 getfdproto(struct tcb *tcp, int fd)
376 #ifdef HAVE_SYS_XATTR_H
377 size_t bufsize = 256;
380 char path[sizeof("/proc/%u/fd/%u") + 2 * sizeof(int)*3];
383 return SOCK_PROTO_UNKNOWN;
385 xsprintf(path, "/proc/%u/fd/%u", tcp->pid, fd);
386 r = getxattr(path, "system.sockprotoname", buf, bufsize - 1);
388 return SOCK_PROTO_UNKNOWN;
391 * This is a protection for the case when the kernel
392 * side does not append a null byte to the buffer.
396 return get_proto_by_name(buf);
399 return SOCK_PROTO_UNKNOWN;
404 getfdinode(struct tcb *tcp, int fd)
406 char path[PATH_MAX + 1];
408 if (getfdpath(tcp, fd, path, sizeof(path)) >= 0) {
409 const char *str = STR_STRIP_PREFIX(path, "socket:[");
412 const size_t str_len = strlen(str);
413 if (str_len && str[str_len - 1] == ']')
414 return strtoul(str, NULL, 10);
422 printfd(struct tcb *tcp, int fd)
424 char path[PATH_MAX + 1];
425 if (show_fd_path && getfdpath(tcp, fd, path, sizeof(path)) >= 0) {
431 if (show_fd_path <= 1
432 || (str = STR_STRIP_PREFIX(path, "socket:[")) == path
433 || !(len = strlen(str))
434 || str[len - 1] != ']'
435 || !(inode = strtoul(str, NULL, 10))
436 || !print_sockaddr_by_inode(tcp, fd, inode)) {
437 print_quoted_string(path, strlen(path),
438 QUOTE_OMIT_LEADING_TRAILING_QUOTES);
446 * Quote string `instr' of length `size'
447 * Write up to (3 + `size' * 4) bytes to `outstr' buffer.
449 * `escape_chars' specifies characters (in addition to characters with
450 * codes 0..31, 127..255, single and double quotes) that should be escaped.
452 * If QUOTE_0_TERMINATED `style' flag is set,
453 * treat `instr' as a NUL-terminated string,
454 * checking up to (`size' + 1) bytes of `instr'.
456 * If QUOTE_OMIT_LEADING_TRAILING_QUOTES `style' flag is set,
457 * do not add leading and trailing quoting symbols.
459 * Returns 0 if QUOTE_0_TERMINATED is set and NUL was seen, 1 otherwise.
460 * Note that if QUOTE_0_TERMINATED is not set, always returns 1.
463 string_quote(const char *instr, char *outstr, const unsigned int size,
464 const unsigned int style, const char *escape_chars)
466 const unsigned char *ustr = (const unsigned char *) instr;
472 if (style & QUOTE_0_TERMINATED)
475 eol = 0x100; /* this can never match a char */
478 if ((xflag > 1) || (style & QUOTE_FORCE_HEX)) {
481 /* Check for presence of symbol which require
482 to hex-quote the whole string. */
483 for (i = 0; i < size; ++i) {
485 /* Check for NUL-terminated string. */
489 /* Force hex unless c is printable or whitespace */
494 /* In ASCII isspace is only these chars: "\t\n\v\f\r".
495 * They happen to have ASCII codes 9,10,11,12,13.
497 if (c < ' ' && (unsigned)(c - 9) >= 5) {
504 if (style & QUOTE_EMIT_COMMENT)
505 s = stpcpy(s, " /* ");
506 if (!(style & QUOTE_OMIT_LEADING_TRAILING_QUOTES))
510 /* Hex-quote the whole string. */
511 for (i = 0; i < size; ++i) {
513 /* Check for NUL-terminated string. */
518 *s++ = "0123456789abcdef"[c >> 4];
519 *s++ = "0123456789abcdef"[c & 0xf];
525 for (i = 0; i < size; ++i) {
527 /* Check for NUL-terminated string. */
530 if ((i == (size - 1)) &&
531 (style & QUOTE_OMIT_TRAILING_0) && (c == '\0'))
534 case '\"': case '\\':
559 escape = (c < ' ') || (c > 0x7e);
561 if (!escape && escape_chars)
562 escape = !!strchr(escape_chars, c);
570 && ustr[i + 1] >= '0'
571 && ustr[i + 1] <= '7'
574 *s++ = '0' + (c >> 6);
575 *s++ = '0' + ((c >> 3) & 0x7);
580 *s++ = '0' + (c >> 6);
581 *s++ = '0' + ((c >> 3) & 0x7);
584 *s++ = '0' + (c & 0x7);
590 if (!(style & QUOTE_OMIT_LEADING_TRAILING_QUOTES))
592 if (style & QUOTE_EMIT_COMMENT)
593 s = stpcpy(s, " */");
596 /* Return zero if we printed entire ASCIZ string (didn't truncate it) */
597 if (style & QUOTE_0_TERMINATED && ustr[i] == '\0') {
598 /* We didn't see NUL yet (otherwise we'd jump to 'asciz_ended')
599 * but next char is NUL.
607 if (!(style & QUOTE_OMIT_LEADING_TRAILING_QUOTES))
609 if (style & QUOTE_EMIT_COMMENT)
610 s = stpcpy(s, " */");
612 /* Return zero: we printed entire ASCIZ string (didn't truncate it) */
616 #ifndef ALLOCA_CUTOFF
617 # define ALLOCA_CUTOFF 4032
619 #define use_alloca(n) ((n) <= ALLOCA_CUTOFF)
622 * Quote string `str' of length `size' and print the result.
624 * If QUOTE_0_TERMINATED `style' flag is set,
625 * treat `str' as a NUL-terminated string and
626 * quote at most (`size' - 1) bytes.
628 * If QUOTE_OMIT_LEADING_TRAILING_QUOTES `style' flag is set,
629 * do not add leading and trailing quoting symbols.
631 * Returns 0 if QUOTE_0_TERMINATED is set and NUL was seen, 1 otherwise.
632 * Note that if QUOTE_0_TERMINATED is not set, always returns 1.
635 print_quoted_string_ex(const char *str, unsigned int size,
636 const unsigned int style, const char *escape_chars)
640 unsigned int alloc_size;
643 if (size && style & QUOTE_0_TERMINATED)
646 alloc_size = 4 * size;
647 if (alloc_size / 4 != size) {
648 error_msg("Out of memory");
652 alloc_size += 1 + (style & QUOTE_OMIT_LEADING_TRAILING_QUOTES ? 0 : 2) +
653 (style & QUOTE_EMIT_COMMENT ? 7 : 0);
655 if (use_alloca(alloc_size)) {
656 outstr = alloca(alloc_size);
659 outstr = buf = malloc(alloc_size);
661 error_msg("Out of memory");
667 rc = string_quote(str, outstr, size, style, escape_chars);
675 print_quoted_string(const char *str, unsigned int size,
676 const unsigned int style)
678 return print_quoted_string_ex(str, size, style, NULL);
682 * Quote a NUL-terminated string `str' of length up to `size' - 1
683 * and print the result.
685 * Returns 0 if NUL was seen, 1 otherwise.
688 print_quoted_cstring(const char *str, unsigned int size)
691 print_quoted_string(str, size, QUOTE_0_TERMINATED);
700 * Print path string specified by address `addr' and length `n'.
701 * If path length exceeds `n', append `...' to the output.
703 * Returns the result of umovenstr.
706 printpathn(struct tcb *const tcp, const kernel_ulong_t addr, unsigned int n)
716 /* Cap path length to the path buffer size */
717 if (n > sizeof(path) - 1)
718 n = sizeof(path) - 1;
720 /* Fetch one byte more to find out whether path length > n. */
721 nul_seen = umovestr(tcp, addr, n + 1, path);
725 path[n++] = !nul_seen;
726 print_quoted_cstring(path, n);
733 printpath(struct tcb *const tcp, const kernel_ulong_t addr)
735 /* Size must correspond to char path[] size in printpathn */
736 return printpathn(tcp, addr, PATH_MAX - 1);
740 * Print string specified by address `addr' and length `len'.
741 * If `user_style' has QUOTE_0_TERMINATED bit set, treat the string
742 * as a NUL-terminated string.
743 * Pass `user_style' on to `string_quote'.
744 * Append `...' to the output if either the string length exceeds `max_strlen',
745 * or QUOTE_0_TERMINATED bit is set and the string length exceeds `len'.
747 * Returns the result of umovenstr if style has QUOTE_0_TERMINATED,
748 * or the result of umoven otherwise.
751 printstr_ex(struct tcb *const tcp, const kernel_ulong_t addr,
752 const kernel_ulong_t len, const unsigned int user_style)
758 unsigned int style = user_style;
766 /* Allocate static buffers if they are not allocated yet. */
768 const unsigned int outstr_size =
769 4 * max_strlen + /* for quotes and NUL */ 3;
771 * We can assume that outstr_size / 4 == max_strlen
772 * since we have a guarantee that max_strlen <= -1U / 4.
775 str = xmalloc(max_strlen + 1);
776 outstr = xmalloc(outstr_size);
779 /* Fetch one byte more because string_quote may look one byte ahead. */
780 size = max_strlen + 1;
784 if (style & QUOTE_0_TERMINATED)
785 rc = umovestr(tcp, addr, size, str);
787 rc = umoven(tcp, addr, size, str);
794 if (size > max_strlen)
799 /* If string_quote didn't see NUL and (it was supposed to be ASCIZ str
800 * or we were requested to print more than -s NUM chars)...
802 ellipsis = string_quote(str, outstr, size, style, NULL)
804 && ((style & QUOTE_0_TERMINATED)
805 || len > max_strlen);
815 dumpiov_upto(struct tcb *const tcp, const int len, const kernel_ulong_t addr,
816 kernel_ulong_t data_size)
818 #if ANY_WORDSIZE_LESS_THAN_KERNEL_LONG
820 struct { uint32_t base; uint32_t len; } *iov32;
821 struct { uint64_t base; uint64_t len; } *iov64;
823 #define iov iovu.iov64
825 (current_wordsize == 4 ? sizeof(*iovu.iov32) : sizeof(*iovu.iov64))
826 #define iov_iov_base(i) \
827 (current_wordsize == 4 ? (uint64_t) iovu.iov32[i].base : iovu.iov64[i].base)
828 #define iov_iov_len(i) \
829 (current_wordsize == 4 ? (uint64_t) iovu.iov32[i].len : iovu.iov64[i].len)
832 #define sizeof_iov sizeof(*iov)
833 #define iov_iov_base(i) ptr_to_kulong(iov[i].iov_base)
834 #define iov_iov_len(i) iov[i].iov_len
839 size = sizeof_iov * len;
840 /* Assuming no sane program has millions of iovs */
841 if ((unsigned)len > 1024*1024 /* insane or negative size? */
842 || (iov = malloc(size)) == NULL) {
843 error_msg("Out of memory");
846 if (umoven(tcp, addr, size, iov) >= 0) {
847 for (i = 0; i < len; i++) {
848 kernel_ulong_t iov_len = iov_iov_len(i);
849 if (iov_len > data_size)
853 data_size -= iov_len;
854 /* include the buffer number to make it easy to
855 * match up the trace with the source */
856 tprintf(" * %" PRI_klu " bytes in buffer %d\n", iov_len, i);
857 dumpstr(tcp, iov_iov_base(i), iov_len);
868 dumpstr(struct tcb *const tcp, const kernel_ulong_t addr, const int len)
870 static int strsize = -1;
871 static unsigned char *str;
876 "xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx "
877 "1234567890123456") + /*in case I'm off by few:*/ 4)
878 /*align to 8 to make memset easier:*/ + 7) & -8
880 const unsigned char *src;
883 memset(outbuf, ' ', sizeof(outbuf));
885 if (strsize < len + 16) {
887 str = malloc(len + 16);
890 error_msg("Out of memory");
896 if (umoven(tcp, addr, len, str) < 0)
899 /* Space-pad to 16 bytes */
911 *dst++ = "0123456789abcdef"[*src >> 4];
912 *dst++ = "0123456789abcdef"[*src & 0xf];
917 dst++; /* space is there by memset */
920 dst++; /* space is there by memset */
927 if (*src >= ' ' && *src < 0x7f)
934 tprintf(" | %05x %s |\n", i - 16, outbuf);
939 umoven_or_printaddr(struct tcb *const tcp, const kernel_ulong_t addr,
940 const unsigned int len, void *const our_addr)
942 if (!addr || !verbose(tcp) || (exiting(tcp) && syserror(tcp)) ||
943 umoven(tcp, addr, len, our_addr) < 0) {
951 umoven_or_printaddr_ignore_syserror(struct tcb *const tcp,
952 const kernel_ulong_t addr,
953 const unsigned int len,
954 void *const our_addr)
956 if (!addr || !verbose(tcp) || umoven(tcp, addr, len, our_addr) < 0) {
964 * Iteratively fetch and print up to nmemb elements of elem_size size
965 * from the array that starts at tracee's address start_addr.
967 * Array elements are being fetched to the address specified by elem_buf.
969 * The fetcher callback function specified by umoven_func should follow
970 * the same semantics as umoven_or_printaddr function.
972 * The printer callback function specified by print_func is expected
973 * to print something; if it returns false, no more iterations will be made.
975 * The pointer specified by opaque_data is passed to each invocation
976 * of print_func callback function.
978 * This function prints:
979 * - "NULL", if start_addr is NULL;
980 * - "[]", if nmemb is 0;
981 * - start_addr, if nmemb * elem_size overflows or wraps around;
982 * - nothing, if the first element cannot be fetched
983 * (if umoven_func returns non-zero), but it is assumed that
984 * umoven_func has printed the address it failed to fetch data from;
985 * - elements of the array, delimited by ", ", with the array itself
986 * enclosed with [] brackets.
988 * If abbrev(tcp) is true, then
989 * - the maximum number of elements printed equals to max_strlen;
990 * - "..." is printed instead of max_strlen+1 element
991 * and no more iterations will be made.
993 * This function returns true only if
994 * - umoven_func has been called at least once AND
995 * - umoven_func has not returned false.
998 print_array(struct tcb *const tcp,
999 const kernel_ulong_t start_addr,
1001 void *const elem_buf,
1002 const size_t elem_size,
1003 int (*const umoven_func)(struct tcb *,
1007 bool (*const print_func)(struct tcb *,
1011 void *const opaque_data)
1023 const size_t size = nmemb * elem_size;
1024 const kernel_ulong_t end_addr = start_addr + size;
1026 if (end_addr <= start_addr || size / elem_size != nmemb) {
1027 printaddr(start_addr);
1031 const kernel_ulong_t abbrev_end =
1032 (abbrev(tcp) && max_strlen < nmemb) ?
1033 start_addr + elem_size * max_strlen : end_addr;
1036 for (cur = start_addr; cur < end_addr; cur += elem_size) {
1037 if (cur != start_addr)
1040 if (umoven_func(tcp, cur, elem_size, elem_buf))
1043 if (cur == start_addr)
1046 if (cur >= abbrev_end) {
1052 if (!print_func(tcp, elem_buf, elem_size, opaque_data)) {
1057 if (cur != start_addr)
1060 return cur >= end_addr;
1064 printargs(struct tcb *tcp)
1066 const int n = tcp->s_ent->nargs;
1068 for (i = 0; i < n; ++i)
1069 tprintf("%s%#" PRI_klx, i ? ", " : "", tcp->u_arg[i]);
1070 return RVAL_DECODED;
1074 printargs_u(struct tcb *tcp)
1076 const int n = tcp->s_ent->nargs;
1078 for (i = 0; i < n; ++i)
1079 tprintf("%s%u", i ? ", " : "",
1080 (unsigned int) tcp->u_arg[i]);
1081 return RVAL_DECODED;
1085 printargs_d(struct tcb *tcp)
1087 const int n = tcp->s_ent->nargs;
1089 for (i = 0; i < n; ++i)
1090 tprintf("%s%d", i ? ", " : "",
1091 (int) tcp->u_arg[i]);
1092 return RVAL_DECODED;
1095 /* Print abnormal high bits of a kernel_ulong_t value. */
1097 print_abnormal_hi(const kernel_ulong_t val)
1099 if (current_klongsize > 4) {
1100 const unsigned int hi = (unsigned int) ((uint64_t) val >> 32);
1102 tprintf("%#x<<32|", hi);
1106 #if defined _LARGEFILE64_SOURCE && defined HAVE_OPEN64
1107 # define open_file open64
1109 # define open_file open
1113 read_int_from_file(struct tcb *tcp, const char *const fname, int *const pvalue)
1115 const int fd = open_file(fname, O_RDONLY);
1120 char buf[sizeof(lval) * 3];
1121 int n = read(fd, buf, sizeof(buf) - 1);
1122 int saved_errno = errno;
1126 errno = saved_errno;
1133 lval = strtol(buf, &endptr, 10);
1134 if (!endptr || (*endptr && '\n' != *endptr)
1135 #if INT_MAX < LONG_MAX
1136 || lval > INT_MAX || lval < INT_MIN
1138 || ERANGE == errno) {
1144 *pvalue = (int) lval;