2 * Copyright (c) 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
26 #include "byte-order.h"
27 #include "command-line.h"
30 #include "openvswitch/vlog.h"
33 check_log_2_floor(uint32_t x
, int n
)
35 if (log_2_floor(x
) != n
) {
36 fprintf(stderr
, "log_2_floor(%"PRIu32
") is %d but should be %d\n",
37 x
, log_2_floor(x
), n
);
43 test_log_2_floor(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
47 for (n
= 0; n
< 32; n
++) {
48 /* Check minimum x such that f(x) == n. */
49 check_log_2_floor(1 << n
, n
);
51 /* Check maximum x such that f(x) == n. */
52 check_log_2_floor((1 << n
) | ((1 << n
) - 1), n
);
54 /* Check a random value in the middle. */
55 check_log_2_floor((random_uint32() & ((1 << n
) - 1)) | (1 << n
), n
);
58 /* log_2_floor(0) is undefined, so don't check it. */
62 check_ctz32(uint32_t x
, int n
)
65 fprintf(stderr
, "ctz32(%"PRIu32
") is %d but should be %d\n",
72 check_ctz64(uint64_t x
, int n
)
75 fprintf(stderr
, "ctz64(%"PRIu64
") is %d but should be %d\n",
82 test_ctz(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
86 for (n
= 0; n
< 32; n
++) {
87 /* Check minimum x such that f(x) == n. */
88 check_ctz32(1 << n
, n
);
90 /* Check maximum x such that f(x) == n. */
91 check_ctz32(UINT32_MAX
<< n
, n
);
93 /* Check a random value in the middle. */
94 check_ctz32((random_uint32() | 1) << n
, n
);
98 for (n
= 0; n
< 64; n
++) {
99 /* Check minimum x such that f(x) == n. */
100 check_ctz64(UINT64_C(1) << n
, n
);
102 /* Check maximum x such that f(x) == n. */
103 check_ctz64(UINT64_MAX
<< n
, n
);
105 /* Check a random value in the middle. */
106 check_ctz64((random_uint64() | UINT64_C(1)) << n
, n
);
115 check_clz32(uint32_t x
, int n
)
118 fprintf(stderr
, "clz32(%"PRIu32
") is %d but should be %d\n",
125 check_clz64(uint64_t x
, int n
)
128 fprintf(stderr
, "clz64(%"PRIu64
") is %d but should be %d\n",
135 test_clz(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
139 for (n
= 0; n
< 32; n
++) {
140 /* Check minimum x such that f(x) == n. */
141 check_clz32((1u << 31) >> n
, n
);
143 /* Check maximum x such that f(x) == n. */
144 check_clz32(UINT32_MAX
>> n
, n
);
146 /* Check a random value in the middle. */
147 check_clz32((random_uint32() | 1u << 31) >> n
, n
);
150 for (n
= 0; n
< 64; n
++) {
151 /* Check minimum x such that f(x) == n. */
152 check_clz64((UINT64_C(1) << 63) >> n
, n
);
154 /* Check maximum x such that f(x) == n. */
155 check_clz64(UINT64_MAX
>> n
, n
);
157 /* Check a random value in the middle. */
158 check_clz64((random_uint64() | UINT64_C(1) << 63) >> n
, n
);
166 /* Returns a random number in the range 'min'...'max' inclusive. */
168 random_in_range(uint32_t min
, uint32_t max
)
170 return min
== max
? min
: min
+ random_range(max
- min
+ 1);
174 check_rup2(uint32_t x
, int n
)
176 uint32_t rup2
= ROUND_UP_POW2(x
);
178 fprintf(stderr
, "ROUND_UP_POW2(%#"PRIx32
") is %#"PRIx32
" "
179 "but should be %#"PRIx32
"\n", x
, rup2
, n
);
185 test_round_up_pow2(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
189 for (n
= 0; n
< 32; n
++) {
190 /* Min, max value for which ROUND_UP_POW2 should yield (1 << n). */
191 uint32_t min
= ((1u << n
) >> 1) + 1;
192 uint32_t max
= 1u << n
;
194 check_rup2(min
, 1u << n
);
195 check_rup2(max
, 1u << n
);
196 check_rup2(random_in_range(min
, max
), 1u << n
);
202 check_rdp2(uint32_t x
, int n
)
204 uint32_t rdp2
= ROUND_DOWN_POW2(x
);
206 fprintf(stderr
, "ROUND_DOWN_POW2(%#"PRIx32
") is %#"PRIx32
" "
207 "but should be %#"PRIx32
"\n", x
, rdp2
, n
);
213 test_round_down_pow2(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
217 for (n
= 0; n
< 32; n
++) {
218 /* Min, max value for which ROUND_DOWN_POW2 should yield (1 << n). */
219 uint32_t min
= 1u << n
;
220 uint32_t max
= ((1u << n
) << 1) - 1;
222 check_rdp2(min
, 1u << n
);
223 check_rdp2(max
, 1u << n
);
224 check_rdp2(random_in_range(min
, max
), 1u << n
);
230 shuffle(uint64_t *p
, size_t n
)
232 for (; n
> 1; n
--, p
++) {
233 uint64_t *q
= &p
[random_range(n
)];
241 check_count_1bits(uint64_t x
, int n
)
243 if (count_1bits(x
) != n
) {
244 fprintf(stderr
, "count_1bits(%#"PRIx64
") is %d but should be %d\n",
245 x
, count_1bits(x
), n
);
251 test_count_1bits(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
256 for (i
= 0; i
< ARRAY_SIZE(bits
); i
++) {
257 bits
[i
] = UINT64_C(1) << i
;
260 check_count_1bits(0, 0);
262 for (i
= 0; i
< 1000; i
++) {
266 shuffle(bits
, ARRAY_SIZE(bits
));
267 for (j
= 0; j
< 64; j
++) {
269 check_count_1bits(x
, j
+ 1);
271 assert(x
== UINT64_MAX
);
273 shuffle(bits
, ARRAY_SIZE(bits
));
274 for (j
= 63; j
>= 0; j
--) {
276 check_count_1bits(x
, j
);
282 /* Returns the sum of the squares of the first 'n' positive integers. */
284 sum_of_squares(int n
)
286 return n
* (n
+ 1) * (2 * n
+ 1) / 6;
290 test_bitwise_copy(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
292 unsigned int n_loops
;
298 for (n_bits
= 0; n_bits
<= 64; n_bits
++) {
299 for (src_ofs
= 0; src_ofs
< 64 - n_bits
; src_ofs
++) {
300 for (dst_ofs
= 0; dst_ofs
< 64 - n_bits
; dst_ofs
++) {
301 ovs_be64 src
= htonll(random_uint64());
302 ovs_be64 dst
= htonll(random_uint64());
303 ovs_be64 orig_dst
= dst
;
309 uint64_t mask
= (UINT64_C(1) << n_bits
) - 1;
310 expect
= orig_dst
& ~htonll(mask
<< dst_ofs
);
311 expect
|= htonll(((ntohll(src
) >> src_ofs
) & mask
)
315 bitwise_copy(&src
, sizeof src
, src_ofs
,
316 &dst
, sizeof dst
, dst_ofs
,
319 fprintf(stderr
,"copy_bits(0x%016"PRIx64
",8,%d, "
320 "0x%016"PRIx64
",8,%d, %d) yielded 0x%016"PRIx64
" "
321 "instead of the expected 0x%016"PRIx64
"\n",
322 ntohll(src
), src_ofs
,
323 ntohll(orig_dst
), dst_ofs
,
325 ntohll(dst
), ntohll(expect
));
334 if (n_loops
!= sum_of_squares(64)) {
340 test_bitwise_zero(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
342 unsigned int n_loops
;
347 for (n_bits
= 0; n_bits
<= 64; n_bits
++) {
348 for (dst_ofs
= 0; dst_ofs
< 64 - n_bits
; dst_ofs
++) {
349 ovs_be64 dst
= htonll(random_uint64());
350 ovs_be64 orig_dst
= dst
;
356 uint64_t mask
= (UINT64_C(1) << n_bits
) - 1;
357 expect
= orig_dst
& ~htonll(mask
<< dst_ofs
);
360 bitwise_zero(&dst
, sizeof dst
, dst_ofs
, n_bits
);
362 fprintf(stderr
,"bitwise_zero(0x%016"PRIx64
",8,%d, %d) "
363 "yielded 0x%016"PRIx64
" "
364 "instead of the expected 0x%016"PRIx64
"\n",
365 ntohll(orig_dst
), dst_ofs
,
367 ntohll(dst
), ntohll(expect
));
375 if (n_loops
!= 64 * (64 + 1) / 2) {
381 test_bitwise_one(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
383 unsigned int n_loops
;
388 for (n_bits
= 0; n_bits
<= 64; n_bits
++) {
389 for (dst_ofs
= 0; dst_ofs
< 64 - n_bits
; dst_ofs
++) {
390 ovs_be64 dst
= htonll(random_uint64());
391 ovs_be64 orig_dst
= dst
;
395 expect
= OVS_BE64_MAX
;
397 uint64_t mask
= (UINT64_C(1) << n_bits
) - 1;
398 expect
= orig_dst
| htonll(mask
<< dst_ofs
);
401 bitwise_one(&dst
, sizeof dst
, dst_ofs
, n_bits
);
403 fprintf(stderr
,"bitwise_one(0x%016"PRIx64
",8,%d, %d) "
404 "yielded 0x%016"PRIx64
" "
405 "instead of the expected 0x%016"PRIx64
"\n",
406 ntohll(orig_dst
), dst_ofs
,
408 ntohll(dst
), ntohll(expect
));
416 if (n_loops
!= 64 * (64 + 1) / 2) {
422 test_bitwise_is_all_zeros(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
426 for (n_loops
= 0; n_loops
< 100; n_loops
++) {
427 ovs_be64 x
= htonll(0);
430 for (i
= 0; i
< 64; i
++) {
434 /* Change a random 0-bit into a 1-bit. */
436 bit
= htonll(UINT64_C(1) << (random_range(64)));
440 for (ofs
= 0; ofs
< 64; ofs
++) {
441 for (n
= 0; n
<= 64 - ofs
; n
++) {
447 : !(x
& htonll(((UINT64_C(1) << n
) - 1)
449 answer
= bitwise_is_all_zeros(&x
, sizeof x
, ofs
, n
);
450 if (expect
!= answer
) {
452 "bitwise_is_all_zeros(0x%016"PRIx64
",8,%d,%d "
453 "returned %s instead of %s\n",
455 answer
? "true" : "false",
456 expect
? "true" : "false");
466 trivial_bitwise_rscan(const void *p
, unsigned int len
, bool target
,
471 for (ofs
= start
; ofs
> end
; ofs
--) {
472 if (bitwise_get_bit(p
, len
, ofs
) == target
) {
480 test_bitwise_rscan(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
483 uint8_t s1
[3] = {0xff, 0xff, 0xff};
484 /* Target is the first bit */
485 ovs_assert(23 == bitwise_rscan(s1
, 3, 1, 23, -1));
486 /* Target is not found, return -1 */
487 ovs_assert(-1 == bitwise_rscan(s1
, 3, 0, 23, -1));
488 /* Target is not found and end != -1, return end */
489 ovs_assert(20 == bitwise_rscan(s1
, 3, 0, 23, 20));
491 /* bit 20 - 23 are 0s */
492 uint8_t s2
[3] = {0x0f, 0xff, 0xff};
493 /* Target is in the first byte but not the first bit */
494 ovs_assert(19 == bitwise_rscan(s2
, 3, 1, 23, -1));
495 /* Target exists before the start postion */
496 ovs_assert(18 == bitwise_rscan(s2
, 3, 1, 18, -1));
497 /* Target exists after the end postion, return end */
498 ovs_assert(20 == bitwise_rscan(s2
, 3, 1, 23, 20));
499 /* Target is at the end postion, return end */
500 ovs_assert(19 == bitwise_rscan(s2
, 3, 1, 23, 19));
501 /* start == end, target at start */
502 ovs_assert(19 == bitwise_rscan(s2
, 3, 1, 19, 19));
503 /* start == end, target not at start */
504 ovs_assert(20 == bitwise_rscan(s2
, 3, 1, 20, 20));
505 /* Target is 0 ... */
506 ovs_assert(22 == bitwise_rscan(s2
, 3, 0, 22, -1));
508 /* bit 4 - 23 are 0s */
509 uint8_t s3
[3] = {0x00, 0x00, 0x0f};
510 /* Target is in the end byte */
511 ovs_assert(3 == bitwise_rscan(s3
, 3, 1, 16, -1));
512 /* Target exists after the end byte, return end */
513 ovs_assert(15 == bitwise_rscan(s3
, 3, 1, 23, 15));
514 /* Target exists in end byte but after the end bit, return end */
515 ovs_assert(4 == bitwise_rscan(s3
, 3, 1, 23, 4));
516 /* Target is 0 ... */
517 ovs_assert(12 == bitwise_rscan(s3
, 3, 0, 12, -1));
520 uint8_t s4
[3] = {0x00, 0x00, 0x00};
521 /* Target not found */
522 ovs_assert(-1 == bitwise_rscan(s4
, 3, 1, 23, -1));
523 /* Target is 0 ..., start is 0 */
524 ovs_assert(0 == bitwise_rscan(s4
, 3, 0, 0, -1));
527 for (n_loops
= 0; n_loops
< 100; n_loops
++) {
528 ovs_be64 x
= htonll(0);
531 for (i
= 0; i
< 64; i
++) {
534 /* Change a random 0-bit into a 1-bit. */
536 bit
= htonll(UINT64_C(1) << (random_range(64)));
540 for (int end
= -1; end
<= 63; end
++) {
541 for (int start
= end
; start
<= 63; start
++) {
542 for (int target
= 0; target
< 2; target
++) {
543 bool expect
= trivial_bitwise_rscan(
544 &x
, sizeof x
, target
, start
, end
);
545 bool answer
= bitwise_rscan(
546 &x
, sizeof x
, target
, start
, end
);
547 if (expect
!= answer
) {
549 "bitwise_rscan(0x%016"PRIx64
",8,%s,%d,%d) "
550 "returned %s instead of %s\n",
552 target
? "true" : "false",
554 answer
? "true" : "false",
555 expect
? "true" : "false");
566 test_follow_symlinks(struct ovs_cmdl_context
*ctx
)
570 for (i
= 1; i
< ctx
->argc
; i
++) {
571 char *target
= follow_symlinks(ctx
->argv
[i
]);
578 test_assert(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
584 test_ovs_scan(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
586 char str
[16], str2
[16], str3
[16];
600 ovs_assert(ovs_scan("", " "));
601 ovs_assert(ovs_scan(" ", " "));
602 ovs_assert(ovs_scan(" ", " "));
603 ovs_assert(ovs_scan(" \t ", " "));
605 ovs_assert(ovs_scan("xyzzy", "xyzzy"));
606 ovs_assert(ovs_scan("xy%zzy", "xy%%zzy"));
607 ovs_assert(!ovs_scan(" xy%zzy", "xy%%zzy"));
608 ovs_assert(ovs_scan(" xy%\tzzy", " xy%% zzy"));
610 ovs_assert(ovs_scan("123", "%d", &i
));
611 ovs_assert(i
== 123);
612 ovs_assert(ovs_scan("0", "%d", &i
));
614 ovs_assert(!ovs_scan("123", "%d%d", &i
, &i2
));
615 ovs_assert(ovs_scan("+123", "%d", &i
));
616 ovs_assert(i
== 123);
617 ovs_assert(ovs_scan("-123", "%d", &i
));
618 ovs_assert(i
== -123);
619 ovs_assert(ovs_scan("0123", "%d", &i
));
620 ovs_assert(i
== 123);
621 ovs_assert(ovs_scan(" 123", "%d", &i
));
622 ovs_assert(i
== 123);
623 ovs_assert(ovs_scan("0x123", "%d", &i
));
625 ovs_assert(ovs_scan("123", "%2d %d", &i
, &i2
));
628 ovs_assert(ovs_scan("+123", "%2d %d", &i
, &i2
));
630 ovs_assert(i2
== 23);
631 ovs_assert(ovs_scan("-123", "%2d %d", &i
, &i2
));
633 ovs_assert(i2
== 23);
634 ovs_assert(ovs_scan("0123", "%2d %d", &i
, &i2
));
636 ovs_assert(i2
== 23);
637 ovs_assert(ovs_scan("123", "%*2d %d", &i
));
639 ovs_assert(ovs_scan("+123", "%2d %*d", &i
));
641 ovs_assert(i2
== 23);
642 ovs_assert(ovs_scan("-123", "%*2d %*d"));
644 ovs_assert(ovs_scan("123", "%u", &i
));
645 ovs_assert(i
== 123);
646 ovs_assert(ovs_scan("0", "%u", &i
));
648 ovs_assert(!ovs_scan("123", "%u%u", &i
, &i2
));
649 ovs_assert(ovs_scan("+123", "%u", &i
));
650 ovs_assert(i
== 123);
651 ovs_assert(ovs_scan("-123", "%u", &i
));
652 ovs_assert(i
== -123);
653 ovs_assert(ovs_scan("0123", "%u", &i
));
654 ovs_assert(i
== 123);
655 ovs_assert(ovs_scan(" 123", "%u", &i
));
656 ovs_assert(i
== 123);
657 ovs_assert(ovs_scan("0x123", "%u", &i
));
659 ovs_assert(ovs_scan("123", "%2u %u", &i
, &i2
));
662 ovs_assert(ovs_scan("+123", "%2u %u", &i
, &i2
));
664 ovs_assert(i2
== 23);
665 ovs_assert(ovs_scan("-123", "%2u %u", &i
, &i2
));
667 ovs_assert(i2
== 23);
668 ovs_assert(ovs_scan("0123", "%2u %u", &i
, &i2
));
670 ovs_assert(i2
== 23);
671 ovs_assert(ovs_scan("123", "%*2u %u", &i
));
673 ovs_assert(ovs_scan("+123", "%2u %*u", &i
));
675 ovs_assert(i2
== 23);
676 ovs_assert(ovs_scan("-123", "%*2u %*u"));
678 ovs_assert(ovs_scan("123", "%i", &i
));
679 ovs_assert(i
== 123);
680 ovs_assert(ovs_scan("0", "%i", &i
));
682 ovs_assert(!ovs_scan("123", "%i%i", &i
, &i2
));
683 ovs_assert(ovs_scan("+123", "%i", &i
));
684 ovs_assert(i
== 123);
685 ovs_assert(ovs_scan("-123", "%i", &i
));
686 ovs_assert(i
== -123);
687 ovs_assert(ovs_scan("0123", "%i", &i
));
688 ovs_assert(i
== 0123);
689 ovs_assert(ovs_scan(" 123", "%i", &i
));
690 ovs_assert(i
== 123);
691 ovs_assert(ovs_scan("0x123", "%i", &i
));
692 ovs_assert(i
== 0x123);
693 ovs_assert(ovs_scan("123", "%2i %i", &i
, &i2
));
696 ovs_assert(ovs_scan("+123", "%2i %i", &i
, &i2
));
698 ovs_assert(i2
== 23);
699 ovs_assert(ovs_scan("-123", "%2i %i", &i
, &i2
));
701 ovs_assert(i2
== 23);
702 ovs_assert(ovs_scan("0123", "%2i %i", &i
, &i2
));
704 ovs_assert(i2
== 23);
705 ovs_assert(ovs_scan("123", "%*2i %i", &i
));
707 ovs_assert(ovs_scan("+123", "%2i %*i", &i
));
709 ovs_assert(i2
== 23);
710 ovs_assert(ovs_scan("-123", "%*2i %*i"));
712 ovs_assert(ovs_scan("123", "%o", &i
));
713 ovs_assert(i
== 0123);
714 ovs_assert(ovs_scan("0", "%o", &i
));
716 ovs_assert(!ovs_scan("123", "%o%o", &i
, &i2
));
717 ovs_assert(ovs_scan("+123", "%o", &i
));
718 ovs_assert(i
== 0123);
719 ovs_assert(ovs_scan("-123", "%o", &i
));
720 ovs_assert(i
== -0123);
721 ovs_assert(ovs_scan("0123", "%o", &i
));
722 ovs_assert(i
== 0123);
723 ovs_assert(ovs_scan(" 123", "%o", &i
));
724 ovs_assert(i
== 0123);
725 ovs_assert(ovs_scan("0x123", "%o", &i
));
727 ovs_assert(ovs_scan("123", "%2o %o", &i
, &i2
));
728 ovs_assert(i
== 012);
730 ovs_assert(ovs_scan("+123", "%2o %o", &i
, &i2
));
732 ovs_assert(i2
== 023);
733 ovs_assert(ovs_scan("-123", "%2o %o", &i
, &i2
));
735 ovs_assert(i2
== 023);
736 ovs_assert(ovs_scan("0123", "%2o %o", &i
, &i2
));
738 ovs_assert(i2
== 023);
739 ovs_assert(ovs_scan("123", "%*2o %o", &i
));
741 ovs_assert(ovs_scan("+123", "%2o %*o", &i
));
743 ovs_assert(i2
== 023);
744 ovs_assert(ovs_scan("-123", "%*2o %*o"));
746 ovs_assert(ovs_scan("123", "%x", &i
));
747 ovs_assert(i
== 0x123);
748 ovs_assert(ovs_scan("0", "%x", &i
));
750 ovs_assert(!ovs_scan("123", "%x%x", &i
, &i2
));
751 ovs_assert(ovs_scan("+123", "%x", &i
));
752 ovs_assert(i
== 0x123);
753 ovs_assert(ovs_scan("-123", "%x", &i
));
754 ovs_assert(i
== -0x123);
755 ovs_assert(ovs_scan("0123", "%x", &i
));
756 ovs_assert(i
== 0x123);
757 ovs_assert(ovs_scan(" 123", "%x", &i
));
758 ovs_assert(i
== 0x123);
759 ovs_assert(ovs_scan("0x123", "%x", &i
));
760 ovs_assert(i
== 0x123);
761 ovs_assert(ovs_scan("123", "%2x %x", &i
, &i2
));
762 ovs_assert(i
== 0x12);
764 ovs_assert(ovs_scan("+123", "%2x %x", &i
, &i2
));
766 ovs_assert(i2
== 0x23);
767 ovs_assert(ovs_scan("-123", "%2x %x", &i
, &i2
));
769 ovs_assert(i2
== 0x23);
770 ovs_assert(ovs_scan("0123", "%2x %x", &i
, &i2
));
772 ovs_assert(i2
== 0x23);
773 ovs_assert(ovs_scan("123", "%*2x %x", &i
));
775 ovs_assert(ovs_scan("+123", "%2x %*x", &i
));
777 ovs_assert(i2
== 0x23);
778 ovs_assert(ovs_scan("-123", "%*2x %*x"));
780 ovs_assert(ovs_scan("123", "%hd", &s
));
781 ovs_assert(s
== 123);
782 ovs_assert(!ovs_scan("123", "%hd%hd", &s
, &s2
));
783 ovs_assert(ovs_scan("+123", "%hd", &s
));
784 ovs_assert(s
== 123);
785 ovs_assert(ovs_scan("-123", "%hd", &s
));
786 ovs_assert(s
== -123);
787 ovs_assert(ovs_scan("0123", "%hd", &s
));
788 ovs_assert(s
== 123);
789 ovs_assert(ovs_scan(" 123", "%hd", &s
));
790 ovs_assert(s
== 123);
791 ovs_assert(ovs_scan("0x123", "%hd", &s
));
793 ovs_assert(ovs_scan("123", "%2hd %hd", &s
, &s2
));
796 ovs_assert(ovs_scan("+123", "%2hd %hd", &s
, &s2
));
798 ovs_assert(s2
== 23);
799 ovs_assert(ovs_scan("-123", "%2hd %hd", &s
, &s2
));
801 ovs_assert(s2
== 23);
802 ovs_assert(ovs_scan("0123", "%2hd %hd", &s
, &s2
));
804 ovs_assert(s2
== 23);
806 ovs_assert(ovs_scan("123", "%hhd", &c
));
807 ovs_assert(c
== 123);
808 ovs_assert(ovs_scan("0", "%hhd", &c
));
810 ovs_assert(!ovs_scan("123", "%hhd%hhd", &c
, &c2
));
811 ovs_assert(ovs_scan("+123", "%hhd", &c
));
812 ovs_assert(c
== 123);
813 ovs_assert(ovs_scan("-123", "%hhd", &c
));
814 ovs_assert(c
== -123);
815 ovs_assert(ovs_scan("0123", "%hhd", &c
));
816 ovs_assert(c
== 123);
817 ovs_assert(ovs_scan(" 123", "%hhd", &c
));
818 ovs_assert(c
== 123);
819 ovs_assert(ovs_scan("0x123", "%hhd", &c
));
821 ovs_assert(ovs_scan("123", "%2hhd %hhd", &c
, &c2
));
824 ovs_assert(ovs_scan("+123", "%2hhd %hhd", &c
, &c2
));
826 ovs_assert(c2
== 23);
827 ovs_assert(ovs_scan("-123", "%2hhd %hhd", &c
, &c2
));
829 ovs_assert(c2
== 23);
830 ovs_assert(ovs_scan("0123", "%2hhd %hhd", &c
, &c2
));
832 ovs_assert(c2
== 23);
834 ovs_assert(ovs_scan("123", "%ld", &l
));
835 ovs_assert(l
== 123);
836 ovs_assert(ovs_scan("0", "%ld", &l
));
838 ovs_assert(!ovs_scan("123", "%ld%ld", &l
, &l2
));
839 ovs_assert(ovs_scan("+123", "%ld", &l
));
840 ovs_assert(l
== 123);
841 ovs_assert(ovs_scan("-123", "%ld", &l
));
842 ovs_assert(l
== -123);
843 ovs_assert(ovs_scan("0123", "%ld", &l
));
844 ovs_assert(l
== 123);
845 ovs_assert(ovs_scan(" 123", "%ld", &l
));
846 ovs_assert(l
== 123);
847 ovs_assert(ovs_scan("0x123", "%ld", &l
));
849 ovs_assert(ovs_scan("123", "%2ld %ld", &l
, &l2
));
852 ovs_assert(ovs_scan("+123", "%2ld %ld", &l
, &l2
));
854 ovs_assert(l2
== 23);
855 ovs_assert(ovs_scan("-123", "%2ld %ld", &l
, &l2
));
857 ovs_assert(l2
== 23);
858 ovs_assert(ovs_scan("0123", "%2ld %ld", &l
, &l2
));
860 ovs_assert(l2
== 23);
862 ovs_assert(ovs_scan("123", "%lld", &ll
));
863 ovs_assert(ll
== 123);
864 ovs_assert(ovs_scan("0", "%lld", &ll
));
866 ovs_assert(!ovs_scan("123", "%lld%lld", &ll
, &ll2
));
867 ovs_assert(ovs_scan("+123", "%lld", &ll
));
868 ovs_assert(ll
== 123);
869 ovs_assert(ovs_scan("-123", "%lld", &ll
));
870 ovs_assert(ll
== -123);
871 ovs_assert(ovs_scan("0123", "%lld", &ll
));
872 ovs_assert(ll
== 123);
873 ovs_assert(ovs_scan(" 123", "%lld", &ll
));
874 ovs_assert(ll
== 123);
875 ovs_assert(ovs_scan("0x123", "%lld", &ll
));
877 ovs_assert(ovs_scan("123", "%2lld %lld", &ll
, &ll2
));
878 ovs_assert(ll
== 12);
879 ovs_assert(ll2
== 3);
880 ovs_assert(ovs_scan("+123", "%2lld %lld", &ll
, &ll2
));
882 ovs_assert(ll2
== 23);
883 ovs_assert(ovs_scan("-123", "%2lld %lld", &ll
, &ll2
));
884 ovs_assert(ll
== -1);
885 ovs_assert(ll2
== 23);
886 ovs_assert(ovs_scan("0123", "%2lld %lld", &ll
, &ll2
));
888 ovs_assert(ll2
== 23);
890 ovs_assert(ovs_scan("123", "%jd", &im
));
891 ovs_assert(im
== 123);
892 ovs_assert(ovs_scan("0", "%jd", &im
));
894 ovs_assert(!ovs_scan("123", "%jd%jd", &im
, &im2
));
895 ovs_assert(ovs_scan("+123", "%jd", &im
));
896 ovs_assert(im
== 123);
897 ovs_assert(ovs_scan("-123", "%jd", &im
));
898 ovs_assert(im
== -123);
899 ovs_assert(ovs_scan("0123", "%jd", &im
));
900 ovs_assert(im
== 123);
901 ovs_assert(ovs_scan(" 123", "%jd", &im
));
902 ovs_assert(im
== 123);
903 ovs_assert(ovs_scan("0x123", "%jd", &im
));
905 ovs_assert(ovs_scan("123", "%2jd %jd", &im
, &im2
));
906 ovs_assert(im
== 12);
907 ovs_assert(im2
== 3);
908 ovs_assert(ovs_scan("+123", "%2jd %jd", &im
, &im2
));
910 ovs_assert(im2
== 23);
911 ovs_assert(ovs_scan("-123", "%2jd %jd", &im
, &im2
));
912 ovs_assert(im
== -1);
913 ovs_assert(im2
== 23);
914 ovs_assert(ovs_scan("0123", "%2jd %jd", &im
, &im2
));
916 ovs_assert(im2
== 23);
918 ovs_assert(ovs_scan("123", "%td", &pd
));
919 ovs_assert(pd
== 123);
920 ovs_assert(ovs_scan("0", "%td", &pd
));
922 ovs_assert(!ovs_scan("123", "%td%td", &pd
, &pd2
));
923 ovs_assert(ovs_scan("+123", "%td", &pd
));
924 ovs_assert(pd
== 123);
925 ovs_assert(ovs_scan("-123", "%td", &pd
));
926 ovs_assert(pd
== -123);
927 ovs_assert(ovs_scan("0123", "%td", &pd
));
928 ovs_assert(pd
== 123);
929 ovs_assert(ovs_scan(" 123", "%td", &pd
));
930 ovs_assert(pd
== 123);
931 ovs_assert(ovs_scan("0x123", "%td", &pd
));
933 ovs_assert(ovs_scan("123", "%2td %td", &pd
, &pd2
));
934 ovs_assert(pd
== 12);
935 ovs_assert(pd2
== 3);
936 ovs_assert(ovs_scan("+123", "%2td %td", &pd
, &pd2
));
938 ovs_assert(pd2
== 23);
939 ovs_assert(ovs_scan("-123", "%2td %td", &pd
, &pd2
));
940 ovs_assert(pd
== -1);
941 ovs_assert(pd2
== 23);
942 ovs_assert(ovs_scan("0123", "%2td %td", &pd
, &pd2
));
944 ovs_assert(pd2
== 23);
946 ovs_assert(ovs_scan("123", "%zd", &sz
));
947 ovs_assert(sz
== 123);
948 ovs_assert(ovs_scan("0", "%zd", &sz
));
950 ovs_assert(!ovs_scan("123", "%zd%zd", &sz
, &sz2
));
951 ovs_assert(ovs_scan("+123", "%zd", &sz
));
952 ovs_assert(sz
== 123);
953 ovs_assert(ovs_scan("-123", "%zd", &sz
));
954 ovs_assert(sz
== -123);
955 ovs_assert(ovs_scan("0123", "%zd", &sz
));
956 ovs_assert(sz
== 123);
957 ovs_assert(ovs_scan(" 123", "%zd", &sz
));
958 ovs_assert(sz
== 123);
959 ovs_assert(ovs_scan("0x123", "%zd", &sz
));
961 ovs_assert(ovs_scan("123", "%2zd %zd", &sz
, &sz2
));
962 ovs_assert(sz
== 12);
963 ovs_assert(sz2
== 3);
964 ovs_assert(ovs_scan("+123", "%2zd %zd", &sz
, &sz2
));
966 ovs_assert(sz2
== 23);
967 ovs_assert(ovs_scan("-123", "%2zd %zd", &sz
, &sz2
));
968 ovs_assert(sz
== -1);
969 ovs_assert(sz2
== 23);
970 ovs_assert(ovs_scan("0123", "%2zd %zd", &sz
, &sz2
));
972 ovs_assert(sz2
== 23);
974 ovs_assert(ovs_scan("0.25", "%f", &f
));
975 ovs_assert(f
== 0.25);
976 ovs_assert(ovs_scan("1.0", "%f", &f
));
977 ovs_assert(f
== 1.0);
978 ovs_assert(ovs_scan("-5", "%f", &f
));
979 ovs_assert(f
== -5.0);
980 ovs_assert(ovs_scan("+6", "%f", &f
));
981 ovs_assert(f
== 6.0);
982 ovs_assert(ovs_scan("-1e5", "%f", &f
));
983 ovs_assert(f
== -1e5
);
984 ovs_assert(ovs_scan("-.25", "%f", &f
));
985 ovs_assert(f
== -.25);
986 ovs_assert(ovs_scan("+123.e1", "%f", &f
));
987 ovs_assert(f
== 1230.0);
988 ovs_assert(ovs_scan("25e-2", "%f", &f
));
989 ovs_assert(f
== 0.25);
990 ovs_assert(ovs_scan("0.25", "%1f %f", &f
, &f2
));
992 ovs_assert(f2
== 0.25);
993 ovs_assert(ovs_scan("1.0", "%2f %f", &f
, &f2
));
994 ovs_assert(f
== 1.0);
995 ovs_assert(f2
== 0.0);
996 ovs_assert(!ovs_scan("-5", "%1f", &f
));
997 ovs_assert(!ovs_scan("+6", "%1f", &f
));
998 ovs_assert(!ovs_scan("-1e5", "%2f %*f", &f
));
1000 ovs_assert(!ovs_scan("-.25", "%2f", &f
));
1001 ovs_assert(!ovs_scan("+123.e1", "%6f", &f
));
1002 ovs_assert(!ovs_scan("25e-2", "%4f", &f
));
1004 ovs_assert(ovs_scan("0.25", "%lf", &d
));
1005 ovs_assert(d
== 0.25);
1006 ovs_assert(ovs_scan("1.0", "%lf", &d
));
1007 ovs_assert(d
== 1.0);
1008 ovs_assert(ovs_scan("-5", "%lf", &d
));
1009 ovs_assert(d
== -5.0);
1010 ovs_assert(ovs_scan("+6", "%lf", &d
));
1011 ovs_assert(d
== 6.0);
1012 ovs_assert(ovs_scan("-1e5", "%lf", &d
));
1013 ovs_assert(d
== -1e5
);
1014 ovs_assert(ovs_scan("-.25", "%lf", &d
));
1015 ovs_assert(d
== -.25);
1016 ovs_assert(ovs_scan("+123.e1", "%lf", &d
));
1017 ovs_assert(d
== 1230.0);
1018 ovs_assert(ovs_scan("25e-2", "%lf", &d
));
1019 ovs_assert(d
== 0.25);
1020 ovs_assert(ovs_scan("0.25", "%1lf %lf", &d
, &d2
));
1022 ovs_assert(d2
== 0.25);
1023 ovs_assert(ovs_scan("1.0", "%2lf %lf", &d
, &d2
));
1024 ovs_assert(d
== 1.0);
1025 ovs_assert(d2
== 0.0);
1026 ovs_assert(!ovs_scan("-5", "%1lf", &d
));
1027 ovs_assert(!ovs_scan("+6", "%1lf", &d
));
1028 ovs_assert(!ovs_scan("-1e5", "%2lf %*f", &d
));
1029 ovs_assert(d
== -1);
1030 ovs_assert(!ovs_scan("-.25", "%2lf", &d
));
1031 ovs_assert(!ovs_scan("+123.e1", "%6lf", &d
));
1032 ovs_assert(!ovs_scan("25e-2", "%4lf", &d
));
1034 ovs_assert(ovs_scan("0.25", "%Lf", &ld
));
1035 ovs_assert(ld
== 0.25);
1036 ovs_assert(ovs_scan("1.0", "%Lf", &ld
));
1037 ovs_assert(ld
== 1.0);
1038 ovs_assert(ovs_scan("-5", "%Lf", &ld
));
1039 ovs_assert(ld
== -5.0);
1040 ovs_assert(ovs_scan("+6", "%Lf", &ld
));
1041 ovs_assert(ld
== 6.0);
1042 ovs_assert(ovs_scan("-1e5", "%Lf", &ld
));
1043 ovs_assert(ld
== -1e5
);
1044 ovs_assert(ovs_scan("-.25", "%Lf", &ld
));
1045 ovs_assert(ld
== -.25);
1046 ovs_assert(ovs_scan("+123.e1", "%Lf", &ld
));
1047 ovs_assert(ld
== 1230.0);
1048 ovs_assert(ovs_scan("25e-2", "%Lf", &ld
));
1049 ovs_assert(ld
== 0.25);
1050 ovs_assert(ovs_scan("0.25", "%1Lf %Lf", &ld
, &ld2
));
1051 ovs_assert(ld
== 0);
1052 ovs_assert(ld2
== 0.25);
1053 ovs_assert(ovs_scan("1.0", "%2Lf %Lf", &ld
, &ld2
));
1054 ovs_assert(ld
== 1.0);
1055 ovs_assert(ld2
== 0.0);
1056 ovs_assert(!ovs_scan("-5", "%1Lf", &ld
));
1057 ovs_assert(!ovs_scan("+6", "%1Lf", &ld
));
1058 ovs_assert(!ovs_scan("-1e5", "%2Lf %*f", &ld
));
1059 ovs_assert(ld
== -1);
1060 ovs_assert(!ovs_scan("-.25", "%2Lf", &ld
));
1061 ovs_assert(!ovs_scan("+123.e1", "%6Lf", &ld
));
1062 ovs_assert(!ovs_scan("25e-2", "%4Lf", &ld
));
1064 ovs_assert(ovs_scan(" Hello,\tworld ", "%*s%n%*s%n", &n
, &n2
));
1066 ovs_assert(n2
== 13);
1067 ovs_assert(!ovs_scan(" Hello,\tworld ", "%*s%*s%*s"));
1068 ovs_assert(ovs_scan(" Hello,\tworld ", "%6s%n%5s%n", str
, &n
, str2
, &n2
));
1069 ovs_assert(!strcmp(str
, "Hello,"));
1071 ovs_assert(!strcmp(str2
, "world"));
1072 ovs_assert(n2
== 13);
1073 ovs_assert(ovs_scan(" Hello,\tworld ", "%5s%5s%5s", str
, str2
, str3
));
1074 ovs_assert(!strcmp(str
, "Hello"));
1075 ovs_assert(!strcmp(str2
, ","));
1076 ovs_assert(!strcmp(str3
, "world"));
1077 ovs_assert(!ovs_scan(" ", "%*s"));
1079 ovs_assert(ovs_scan(" Hello,\tworld ", "%*c%n%*c%n%c%n",
1082 ovs_assert(n2
== 2);
1083 ovs_assert(c
== 'e');
1084 ovs_assert(n3
== 3);
1085 ovs_assert(ovs_scan(" Hello,\tworld ", "%*5c%5c", str
));
1086 ovs_assert(!memcmp(str
, "o,\two", 5));
1087 ovs_assert(!ovs_scan(" Hello,\tworld ", "%*15c"));
1089 ovs_assert(ovs_scan("0x1234xyzzy", "%9[x0-9a-fA-F]%n", str
, &n
));
1090 ovs_assert(!strcmp(str
, "0x1234x"));
1092 ovs_assert(ovs_scan("foo:bar=baz", "%5[^:=]%n:%5[^:=]%n=%5[^:=]%n",
1093 str
, &n
, str2
, &n2
, str3
, &n3
));
1094 ovs_assert(!strcmp(str
, "foo"));
1096 ovs_assert(!strcmp(str2
, "bar"));
1097 ovs_assert(n2
== 7);
1098 ovs_assert(!strcmp(str3
, "baz"));
1099 ovs_assert(n3
== 11);
1100 ovs_assert(!ovs_scan(" ", "%*[0-9]"));
1101 ovs_assert(ovs_scan("0x123a]4xyzzy-", "%[]x0-9a-fA-F]", str
));
1102 ovs_assert(!strcmp(str
, "0x123a]4x"));
1103 ovs_assert(ovs_scan("abc]xyz","%[^]xyz]", str
));
1104 ovs_assert(!strcmp(str
, "abc"));
1105 ovs_assert(!ovs_scan("0x123a]4xyzzy-", "%[x0-9]a-fA-F]", str
));
1106 ovs_assert(ovs_scan("0x12-3]xyz", "%[x0-9a-f-]", str
));
1107 ovs_assert(!strcmp(str
, "0x12-3"));
1108 ovs_assert(ovs_scan("0x12-3]xyz", "%[^a-f-]", str
));
1109 ovs_assert(!strcmp(str
, "0x12"));
1110 ovs_assert(sscanf("0x12-3]xyz", "%[^-a-f]", str
));
1111 ovs_assert(!strcmp(str
, "0x12"));
1115 test_snprintf(struct ovs_cmdl_context
*ctx OVS_UNUSED
)
1120 /* GCC 7+ warns about the following calls that truncate a string using
1121 * snprintf(). We're testing that truncation works properly, so
1122 * temporarily disable the warning. */
1123 #pragma GCC diagnostic push
1124 #pragma GCC diagnostic ignored "-Wformat-truncation"
1126 ovs_assert(snprintf(s
, 4, "abcde") == 5);
1127 ovs_assert(!strcmp(s
, "abc"));
1129 ovs_assert(snprintf(s
, 5, "abcde") == 5);
1130 ovs_assert(!strcmp(s
, "abcd"));
1132 #pragma GCC diagnostic pop
1135 ovs_assert(snprintf(s
, 6, "abcde") == 5);
1136 ovs_assert(!strcmp(s
, "abcde"));
1138 ovs_assert(snprintf(NULL
, 0, "abcde") == 5);
1143 test_file_name(struct ovs_cmdl_context
*ctx
)
1147 for (i
= 1; i
< ctx
->argc
; i
++) {
1150 dir
= dir_name(ctx
->argv
[i
]);
1154 base
= base_name(ctx
->argv
[i
]);
1161 static const struct ovs_cmdl_command commands
[] = {
1162 {"ctz", NULL
, 0, 0, test_ctz
, OVS_RO
},
1163 {"clz", NULL
, 0, 0, test_clz
, OVS_RO
},
1164 {"round_up_pow2", NULL
, 0, 0, test_round_up_pow2
, OVS_RO
},
1165 {"round_down_pow2", NULL
, 0, 0, test_round_down_pow2
, OVS_RO
},
1166 {"count_1bits", NULL
, 0, 0, test_count_1bits
, OVS_RO
},
1167 {"log_2_floor", NULL
, 0, 0, test_log_2_floor
, OVS_RO
},
1168 {"bitwise_copy", NULL
, 0, 0, test_bitwise_copy
, OVS_RO
},
1169 {"bitwise_zero", NULL
, 0, 0, test_bitwise_zero
, OVS_RO
},
1170 {"bitwise_one", NULL
, 0, 0, test_bitwise_one
, OVS_RO
},
1171 {"bitwise_is_all_zeros", NULL
, 0, 0, test_bitwise_is_all_zeros
, OVS_RO
},
1172 {"bitwise_rscan", NULL
, 0, 0, test_bitwise_rscan
, OVS_RO
},
1173 {"follow-symlinks", NULL
, 1, INT_MAX
, test_follow_symlinks
, OVS_RO
},
1174 {"assert", NULL
, 0, 0, test_assert
, OVS_RO
},
1175 {"ovs_scan", NULL
, 0, 0, test_ovs_scan
, OVS_RO
},
1176 {"snprintf", NULL
, 0, 0, test_snprintf
, OVS_RO
},
1178 {"file_name", NULL
, 1, INT_MAX
, test_file_name
, OVS_RO
},
1180 {NULL
, NULL
, 0, 0, NULL
, OVS_RO
},
1184 parse_options(int argc
, char *argv
[])
1189 static const struct option long_options
[] = {
1193 char *short_options
= ovs_cmdl_long_options_to_short_options(long_options
);
1196 int c
= getopt_long(argc
, argv
, short_options
, long_options
, NULL
);
1202 VLOG_OPTION_HANDLERS
1211 free(short_options
);
1215 test_util_main(int argc
, char *argv
[])
1217 struct ovs_cmdl_context ctx
= { .argc
= 0, };
1218 set_program_name(argv
[0]);
1219 parse_options(argc
, argv
);
1220 /* On Windows, stderr is fully buffered if connected to a pipe.
1221 * Make it _IONBF so that an abort does not miss log contents.
1222 * POSIX doesn't define the circumstances in which stderr is
1223 * fully buffered either. */
1224 setvbuf(stderr
, NULL
, _IONBF
, 0);
1225 ctx
.argc
= argc
- optind
;
1226 ctx
.argv
= argv
+ optind
;
1227 ovs_cmdl_run_command(&ctx
, commands
);
1230 OVSTEST_REGISTER("test-util", test_util_main
);