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Commit | Line | Data |
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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
707cc728 RV |
2 | /* |
3 | * Test cases for printf facility. | |
4 | */ | |
5 | ||
6 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
7 | ||
8 | #include <linux/init.h> | |
9 | #include <linux/kernel.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/printk.h> | |
12 | #include <linux/random.h> | |
4d42c447 | 13 | #include <linux/rtc.h> |
707cc728 RV |
14 | #include <linux/slab.h> |
15 | #include <linux/string.h> | |
16 | ||
857cca4d | 17 | #include <linux/bitmap.h> |
251c7234 | 18 | #include <linux/dcache.h> |
707cc728 RV |
19 | #include <linux/socket.h> |
20 | #include <linux/in.h> | |
21 | ||
edf14cdb VB |
22 | #include <linux/gfp.h> |
23 | #include <linux/mm.h> | |
24 | ||
f1ce39df SA |
25 | #include <linux/property.h> |
26 | ||
6b1a4d5b TH |
27 | #include "../tools/testing/selftests/kselftest_module.h" |
28 | ||
707cc728 | 29 | #define BUF_SIZE 256 |
331e4deb | 30 | #define PAD_SIZE 16 |
707cc728 RV |
31 | #define FILL_CHAR '$' |
32 | ||
707cc728 RV |
33 | static unsigned total_tests __initdata; |
34 | static unsigned failed_tests __initdata; | |
35 | static char *test_buffer __initdata; | |
331e4deb | 36 | static char *alloced_buffer __initdata; |
707cc728 RV |
37 | |
38 | static int __printf(4, 0) __init | |
39 | do_test(int bufsize, const char *expect, int elen, | |
40 | const char *fmt, va_list ap) | |
41 | { | |
42 | va_list aq; | |
43 | int ret, written; | |
44 | ||
45 | total_tests++; | |
46 | ||
331e4deb | 47 | memset(alloced_buffer, FILL_CHAR, BUF_SIZE + 2*PAD_SIZE); |
707cc728 RV |
48 | va_copy(aq, ap); |
49 | ret = vsnprintf(test_buffer, bufsize, fmt, aq); | |
50 | va_end(aq); | |
51 | ||
52 | if (ret != elen) { | |
53 | pr_warn("vsnprintf(buf, %d, \"%s\", ...) returned %d, expected %d\n", | |
54 | bufsize, fmt, ret, elen); | |
55 | return 1; | |
56 | } | |
57 | ||
331e4deb RV |
58 | if (memchr_inv(alloced_buffer, FILL_CHAR, PAD_SIZE)) { |
59 | pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote before buffer\n", bufsize, fmt); | |
60 | return 1; | |
61 | } | |
62 | ||
707cc728 | 63 | if (!bufsize) { |
331e4deb | 64 | if (memchr_inv(test_buffer, FILL_CHAR, BUF_SIZE + PAD_SIZE)) { |
707cc728 RV |
65 | pr_warn("vsnprintf(buf, 0, \"%s\", ...) wrote to buffer\n", |
66 | fmt); | |
67 | return 1; | |
68 | } | |
69 | return 0; | |
70 | } | |
71 | ||
72 | written = min(bufsize-1, elen); | |
73 | if (test_buffer[written]) { | |
74 | pr_warn("vsnprintf(buf, %d, \"%s\", ...) did not nul-terminate buffer\n", | |
75 | bufsize, fmt); | |
76 | return 1; | |
77 | } | |
78 | ||
331e4deb RV |
79 | if (memchr_inv(test_buffer + written + 1, FILL_CHAR, BUF_SIZE + PAD_SIZE - (written + 1))) { |
80 | pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote beyond the nul-terminator\n", | |
81 | bufsize, fmt); | |
82 | return 1; | |
83 | } | |
84 | ||
707cc728 RV |
85 | if (memcmp(test_buffer, expect, written)) { |
86 | pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote '%s', expected '%.*s'\n", | |
87 | bufsize, fmt, test_buffer, written, expect); | |
88 | return 1; | |
89 | } | |
90 | return 0; | |
91 | } | |
92 | ||
93 | static void __printf(3, 4) __init | |
94 | __test(const char *expect, int elen, const char *fmt, ...) | |
95 | { | |
96 | va_list ap; | |
97 | int rand; | |
98 | char *p; | |
99 | ||
fd0515d5 RV |
100 | if (elen >= BUF_SIZE) { |
101 | pr_err("error in test suite: expected output length %d too long. Format was '%s'.\n", | |
102 | elen, fmt); | |
103 | failed_tests++; | |
104 | return; | |
105 | } | |
707cc728 RV |
106 | |
107 | va_start(ap, fmt); | |
108 | ||
109 | /* | |
110 | * Every fmt+args is subjected to four tests: Three where we | |
111 | * tell vsnprintf varying buffer sizes (plenty, not quite | |
112 | * enough and 0), and then we also test that kvasprintf would | |
113 | * be able to print it as expected. | |
114 | */ | |
115 | failed_tests += do_test(BUF_SIZE, expect, elen, fmt, ap); | |
116 | rand = 1 + prandom_u32_max(elen+1); | |
117 | /* Since elen < BUF_SIZE, we have 1 <= rand <= BUF_SIZE. */ | |
118 | failed_tests += do_test(rand, expect, elen, fmt, ap); | |
119 | failed_tests += do_test(0, expect, elen, fmt, ap); | |
120 | ||
121 | p = kvasprintf(GFP_KERNEL, fmt, ap); | |
122 | if (p) { | |
b79a7db3 | 123 | total_tests++; |
707cc728 RV |
124 | if (memcmp(p, expect, elen+1)) { |
125 | pr_warn("kvasprintf(..., \"%s\", ...) returned '%s', expected '%s'\n", | |
126 | fmt, p, expect); | |
127 | failed_tests++; | |
128 | } | |
129 | kfree(p); | |
130 | } | |
131 | va_end(ap); | |
132 | } | |
133 | ||
134 | #define test(expect, fmt, ...) \ | |
135 | __test(expect, strlen(expect), fmt, ##__VA_ARGS__) | |
136 | ||
137 | static void __init | |
138 | test_basic(void) | |
139 | { | |
140 | /* Work around annoying "warning: zero-length gnu_printf format string". */ | |
141 | char nul = '\0'; | |
142 | ||
143 | test("", &nul); | |
144 | test("100%", "100%%"); | |
145 | test("xxx%yyy", "xxx%cyyy", '%'); | |
146 | __test("xxx\0yyy", 7, "xxx%cyyy", '\0'); | |
147 | } | |
148 | ||
149 | static void __init | |
150 | test_number(void) | |
151 | { | |
152 | test("0x1234abcd ", "%#-12x", 0x1234abcd); | |
153 | test(" 0x1234abcd", "%#12x", 0x1234abcd); | |
154 | test("0|001| 12|+123| 1234|-123|-1234", "%d|%03d|%3d|%+d|% d|%+d|% d", 0, 1, 12, 123, 1234, -123, -1234); | |
1ca8e8eb RV |
155 | test("0|1|1|128|255", "%hhu|%hhu|%hhu|%hhu|%hhu", 0, 1, 257, 128, -1); |
156 | test("0|1|1|-128|-1", "%hhd|%hhd|%hhd|%hhd|%hhd", 0, 1, 257, 128, -1); | |
157 | test("2015122420151225", "%ho%ho%#ho", 1037, 5282, -11627); | |
158 | /* | |
159 | * POSIX/C99: »The result of converting zero with an explicit | |
160 | * precision of zero shall be no characters.« Hence the output | |
161 | * from the below test should really be "00|0||| ". However, | |
162 | * the kernel's printf also produces a single 0 in that | |
163 | * case. This test case simply documents the current | |
164 | * behaviour. | |
165 | */ | |
166 | test("00|0|0|0|0", "%.2d|%.1d|%.0d|%.*d|%1.0d", 0, 0, 0, 0, 0, 0); | |
167 | #ifndef __CHAR_UNSIGNED__ | |
168 | { | |
169 | /* | |
170 | * Passing a 'char' to a %02x specifier doesn't do | |
171 | * what was presumably the intention when char is | |
172 | * signed and the value is negative. One must either & | |
173 | * with 0xff or cast to u8. | |
174 | */ | |
175 | char val = -16; | |
176 | test("0xfffffff0|0xf0|0xf0", "%#02x|%#02x|%#02x", val, val & 0xff, (u8)val); | |
177 | } | |
178 | #endif | |
707cc728 RV |
179 | } |
180 | ||
181 | static void __init | |
182 | test_string(void) | |
183 | { | |
184 | test("", "%s%.0s", "", "123"); | |
185 | test("ABCD|abc|123", "%s|%.3s|%.*s", "ABCD", "abcdef", 3, "123456"); | |
186 | test("1 | 2|3 | 4|5 ", "%-3s|%3s|%-*s|%*s|%*s", "1", "2", 3, "3", 3, "4", -3, "5"); | |
f176eb4c RV |
187 | test("1234 ", "%-10.4s", "123456"); |
188 | test(" 1234", "%10.4s", "123456"); | |
707cc728 | 189 | /* |
f176eb4c RV |
190 | * POSIX and C99 say that a negative precision (which is only |
191 | * possible to pass via a * argument) should be treated as if | |
192 | * the precision wasn't present, and that if the precision is | |
193 | * omitted (as in %.s), the precision should be taken to be | |
194 | * 0. However, the kernel's printf behave exactly opposite, | |
195 | * treating a negative precision as 0 and treating an omitted | |
196 | * precision specifier as if no precision was given. | |
197 | * | |
198 | * These test cases document the current behaviour; should | |
199 | * anyone ever feel the need to follow the standards more | |
200 | * closely, this can be revisited. | |
707cc728 | 201 | */ |
f176eb4c RV |
202 | test(" ", "%4.*s", -5, "123456"); |
203 | test("123456", "%.s", "123456"); | |
707cc728 RV |
204 | test("a||", "%.s|%.0s|%.*s", "a", "b", 0, "c"); |
205 | test("a | | ", "%-3.s|%-3.0s|%-3.*s", "a", "b", 0, "c"); | |
206 | } | |
207 | ||
ad67b74d TH |
208 | #define PLAIN_BUF_SIZE 64 /* leave some space so we don't oops */ |
209 | ||
210 | #if BITS_PER_LONG == 64 | |
211 | ||
212 | #define PTR_WIDTH 16 | |
c604b407 | 213 | #define PTR ((void *)0xffff0123456789abUL) |
ad67b74d | 214 | #define PTR_STR "ffff0123456789ab" |
ce041c43 | 215 | #define PTR_VAL_NO_CRNG "(____ptrval____)" |
ad67b74d TH |
216 | #define ZEROS "00000000" /* hex 32 zero bits */ |
217 | ||
218 | static int __init | |
219 | plain_format(void) | |
220 | { | |
221 | char buf[PLAIN_BUF_SIZE]; | |
222 | int nchars; | |
223 | ||
224 | nchars = snprintf(buf, PLAIN_BUF_SIZE, "%p", PTR); | |
225 | ||
ce041c43 TE |
226 | if (nchars != PTR_WIDTH) |
227 | return -1; | |
228 | ||
229 | if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) { | |
230 | pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"", | |
231 | PTR_VAL_NO_CRNG); | |
232 | return 0; | |
233 | } | |
234 | ||
235 | if (strncmp(buf, ZEROS, strlen(ZEROS)) != 0) | |
ad67b74d TH |
236 | return -1; |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | #else | |
242 | ||
243 | #define PTR_WIDTH 8 | |
244 | #define PTR ((void *)0x456789ab) | |
245 | #define PTR_STR "456789ab" | |
ce041c43 | 246 | #define PTR_VAL_NO_CRNG "(ptrval)" |
3e5903eb | 247 | #define ZEROS "" |
ad67b74d TH |
248 | |
249 | static int __init | |
250 | plain_format(void) | |
251 | { | |
252 | /* Format is implicitly tested for 32 bit machines by plain_hash() */ | |
253 | return 0; | |
254 | } | |
255 | ||
256 | #endif /* BITS_PER_LONG == 64 */ | |
257 | ||
258 | static int __init | |
4d42c447 | 259 | plain_hash_to_buffer(const void *p, char *buf, size_t len) |
ad67b74d | 260 | { |
ad67b74d TH |
261 | int nchars; |
262 | ||
4d42c447 | 263 | nchars = snprintf(buf, len, "%p", p); |
ad67b74d | 264 | |
ce041c43 TE |
265 | if (nchars != PTR_WIDTH) |
266 | return -1; | |
267 | ||
268 | if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) { | |
269 | pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"", | |
270 | PTR_VAL_NO_CRNG); | |
271 | return 0; | |
272 | } | |
273 | ||
4d42c447 AS |
274 | return 0; |
275 | } | |
276 | ||
4d42c447 AS |
277 | static int __init |
278 | plain_hash(void) | |
279 | { | |
280 | char buf[PLAIN_BUF_SIZE]; | |
281 | int ret; | |
282 | ||
283 | ret = plain_hash_to_buffer(PTR, buf, PLAIN_BUF_SIZE); | |
284 | if (ret) | |
285 | return ret; | |
286 | ||
ce041c43 | 287 | if (strncmp(buf, PTR_STR, PTR_WIDTH) == 0) |
ad67b74d TH |
288 | return -1; |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | /* | |
294 | * We can't use test() to test %p because we don't know what output to expect | |
295 | * after an address is hashed. | |
296 | */ | |
707cc728 RV |
297 | static void __init |
298 | plain(void) | |
299 | { | |
ad67b74d | 300 | int err; |
707cc728 | 301 | |
ad67b74d TH |
302 | err = plain_hash(); |
303 | if (err) { | |
304 | pr_warn("plain 'p' does not appear to be hashed\n"); | |
305 | failed_tests++; | |
306 | return; | |
307 | } | |
308 | ||
309 | err = plain_format(); | |
310 | if (err) { | |
311 | pr_warn("hashing plain 'p' has unexpected format\n"); | |
312 | failed_tests++; | |
313 | } | |
707cc728 RV |
314 | } |
315 | ||
4d42c447 AS |
316 | static void __init |
317 | test_hashed(const char *fmt, const void *p) | |
318 | { | |
319 | char buf[PLAIN_BUF_SIZE]; | |
320 | int ret; | |
321 | ||
322 | /* | |
323 | * No need to increase failed test counter since this is assumed | |
324 | * to be called after plain(). | |
325 | */ | |
326 | ret = plain_hash_to_buffer(p, buf, PLAIN_BUF_SIZE); | |
327 | if (ret) | |
328 | return; | |
329 | ||
330 | test(buf, fmt, p); | |
331 | } | |
332 | ||
3e5903eb PM |
333 | static void __init |
334 | null_pointer(void) | |
335 | { | |
336 | test_hashed("%p", NULL); | |
337 | test(ZEROS "00000000", "%px", NULL); | |
338 | test("(null)", "%pE", NULL); | |
339 | } | |
340 | ||
341 | #define PTR_INVALID ((void *)0x000000ab) | |
342 | ||
343 | static void __init | |
344 | invalid_pointer(void) | |
345 | { | |
346 | test_hashed("%p", PTR_INVALID); | |
347 | test(ZEROS "000000ab", "%px", PTR_INVALID); | |
348 | test("(efault)", "%pE", PTR_INVALID); | |
349 | } | |
350 | ||
707cc728 RV |
351 | static void __init |
352 | symbol_ptr(void) | |
353 | { | |
354 | } | |
355 | ||
356 | static void __init | |
357 | kernel_ptr(void) | |
358 | { | |
ad67b74d | 359 | /* We can't test this without access to kptr_restrict. */ |
707cc728 RV |
360 | } |
361 | ||
362 | static void __init | |
363 | struct_resource(void) | |
364 | { | |
365 | } | |
366 | ||
367 | static void __init | |
368 | addr(void) | |
369 | { | |
370 | } | |
371 | ||
372 | static void __init | |
373 | escaped_str(void) | |
374 | { | |
375 | } | |
376 | ||
377 | static void __init | |
378 | hex_string(void) | |
379 | { | |
380 | const char buf[3] = {0xc0, 0xff, 0xee}; | |
381 | ||
382 | test("c0 ff ee|c0:ff:ee|c0-ff-ee|c0ffee", | |
383 | "%3ph|%3phC|%3phD|%3phN", buf, buf, buf, buf); | |
384 | test("c0 ff ee|c0:ff:ee|c0-ff-ee|c0ffee", | |
385 | "%*ph|%*phC|%*phD|%*phN", 3, buf, 3, buf, 3, buf, 3, buf); | |
386 | } | |
387 | ||
388 | static void __init | |
389 | mac(void) | |
390 | { | |
391 | const u8 addr[6] = {0x2d, 0x48, 0xd6, 0xfc, 0x7a, 0x05}; | |
392 | ||
393 | test("2d:48:d6:fc:7a:05", "%pM", addr); | |
394 | test("05:7a:fc:d6:48:2d", "%pMR", addr); | |
395 | test("2d-48-d6-fc-7a-05", "%pMF", addr); | |
396 | test("2d48d6fc7a05", "%pm", addr); | |
397 | test("057afcd6482d", "%pmR", addr); | |
398 | } | |
399 | ||
400 | static void __init | |
401 | ip4(void) | |
402 | { | |
403 | struct sockaddr_in sa; | |
404 | ||
405 | sa.sin_family = AF_INET; | |
406 | sa.sin_port = cpu_to_be16(12345); | |
407 | sa.sin_addr.s_addr = cpu_to_be32(0x7f000001); | |
408 | ||
409 | test("127.000.000.001|127.0.0.1", "%pi4|%pI4", &sa.sin_addr, &sa.sin_addr); | |
410 | test("127.000.000.001|127.0.0.1", "%piS|%pIS", &sa, &sa); | |
411 | sa.sin_addr.s_addr = cpu_to_be32(0x01020304); | |
412 | test("001.002.003.004:12345|1.2.3.4:12345", "%piSp|%pISp", &sa, &sa); | |
413 | } | |
414 | ||
415 | static void __init | |
416 | ip6(void) | |
417 | { | |
418 | } | |
419 | ||
420 | static void __init | |
421 | ip(void) | |
422 | { | |
423 | ip4(); | |
424 | ip6(); | |
425 | } | |
426 | ||
427 | static void __init | |
428 | uuid(void) | |
429 | { | |
430 | const char uuid[16] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, | |
431 | 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf}; | |
432 | ||
433 | test("00010203-0405-0607-0809-0a0b0c0d0e0f", "%pUb", uuid); | |
434 | test("00010203-0405-0607-0809-0A0B0C0D0E0F", "%pUB", uuid); | |
435 | test("03020100-0504-0706-0809-0a0b0c0d0e0f", "%pUl", uuid); | |
436 | test("03020100-0504-0706-0809-0A0B0C0D0E0F", "%pUL", uuid); | |
437 | } | |
438 | ||
251c7234 RV |
439 | static struct dentry test_dentry[4] __initdata = { |
440 | { .d_parent = &test_dentry[0], | |
441 | .d_name = QSTR_INIT(test_dentry[0].d_iname, 3), | |
442 | .d_iname = "foo" }, | |
443 | { .d_parent = &test_dentry[0], | |
444 | .d_name = QSTR_INIT(test_dentry[1].d_iname, 5), | |
445 | .d_iname = "bravo" }, | |
446 | { .d_parent = &test_dentry[1], | |
447 | .d_name = QSTR_INIT(test_dentry[2].d_iname, 4), | |
448 | .d_iname = "alfa" }, | |
449 | { .d_parent = &test_dentry[2], | |
450 | .d_name = QSTR_INIT(test_dentry[3].d_iname, 5), | |
451 | .d_iname = "romeo" }, | |
452 | }; | |
453 | ||
707cc728 RV |
454 | static void __init |
455 | dentry(void) | |
456 | { | |
251c7234 RV |
457 | test("foo", "%pd", &test_dentry[0]); |
458 | test("foo", "%pd2", &test_dentry[0]); | |
459 | ||
cf6b7921 JH |
460 | test("(null)", "%pd", NULL); |
461 | test("(efault)", "%pd", PTR_INVALID); | |
cf6b7921 JH |
462 | test("(null)", "%pD", NULL); |
463 | test("(efault)", "%pD", PTR_INVALID); | |
464 | ||
251c7234 RV |
465 | test("romeo", "%pd", &test_dentry[3]); |
466 | test("alfa/romeo", "%pd2", &test_dentry[3]); | |
467 | test("bravo/alfa/romeo", "%pd3", &test_dentry[3]); | |
468 | test("/bravo/alfa/romeo", "%pd4", &test_dentry[3]); | |
469 | test("/bravo/alfa", "%pd4", &test_dentry[2]); | |
470 | ||
471 | test("bravo/alfa |bravo/alfa ", "%-12pd2|%*pd2", &test_dentry[2], -12, &test_dentry[2]); | |
472 | test(" bravo/alfa| bravo/alfa", "%12pd2|%*pd2", &test_dentry[2], 12, &test_dentry[2]); | |
707cc728 RV |
473 | } |
474 | ||
475 | static void __init | |
476 | struct_va_format(void) | |
477 | { | |
478 | } | |
479 | ||
4d42c447 AS |
480 | static void __init |
481 | struct_rtc_time(void) | |
482 | { | |
483 | /* 1543210543 */ | |
484 | const struct rtc_time tm = { | |
485 | .tm_sec = 43, | |
486 | .tm_min = 35, | |
487 | .tm_hour = 5, | |
488 | .tm_mday = 26, | |
489 | .tm_mon = 10, | |
490 | .tm_year = 118, | |
491 | }; | |
492 | ||
0b74d4d7 | 493 | test("(%ptR?)", "%pt", &tm); |
4d42c447 AS |
494 | test("2018-11-26T05:35:43", "%ptR", &tm); |
495 | test("0118-10-26T05:35:43", "%ptRr", &tm); | |
496 | test("05:35:43|2018-11-26", "%ptRt|%ptRd", &tm, &tm); | |
497 | test("05:35:43|0118-10-26", "%ptRtr|%ptRdr", &tm, &tm); | |
498 | test("05:35:43|2018-11-26", "%ptRttr|%ptRdtr", &tm, &tm); | |
499 | test("05:35:43 tr|2018-11-26 tr", "%ptRt tr|%ptRd tr", &tm, &tm); | |
500 | } | |
501 | ||
707cc728 RV |
502 | static void __init |
503 | struct_clk(void) | |
504 | { | |
505 | } | |
506 | ||
857cca4d RV |
507 | static void __init |
508 | large_bitmap(void) | |
509 | { | |
510 | const int nbits = 1 << 16; | |
2821fd0c | 511 | unsigned long *bits = bitmap_zalloc(nbits, GFP_KERNEL); |
857cca4d RV |
512 | if (!bits) |
513 | return; | |
514 | ||
515 | bitmap_set(bits, 1, 20); | |
516 | bitmap_set(bits, 60000, 15); | |
517 | test("1-20,60000-60014", "%*pbl", nbits, bits); | |
2821fd0c | 518 | bitmap_free(bits); |
857cca4d RV |
519 | } |
520 | ||
707cc728 RV |
521 | static void __init |
522 | bitmap(void) | |
523 | { | |
524 | DECLARE_BITMAP(bits, 20); | |
525 | const int primes[] = {2,3,5,7,11,13,17,19}; | |
526 | int i; | |
527 | ||
528 | bitmap_zero(bits, 20); | |
529 | test("00000|00000", "%20pb|%*pb", bits, 20, bits); | |
530 | test("|", "%20pbl|%*pbl", bits, 20, bits); | |
531 | ||
532 | for (i = 0; i < ARRAY_SIZE(primes); ++i) | |
533 | set_bit(primes[i], bits); | |
534 | test("a28ac|a28ac", "%20pb|%*pb", bits, 20, bits); | |
535 | test("2-3,5,7,11,13,17,19|2-3,5,7,11,13,17,19", "%20pbl|%*pbl", bits, 20, bits); | |
536 | ||
537 | bitmap_fill(bits, 20); | |
538 | test("fffff|fffff", "%20pb|%*pb", bits, 20, bits); | |
539 | test("0-19|0-19", "%20pbl|%*pbl", bits, 20, bits); | |
857cca4d RV |
540 | |
541 | large_bitmap(); | |
707cc728 RV |
542 | } |
543 | ||
544 | static void __init | |
545 | netdev_features(void) | |
546 | { | |
547 | } | |
548 | ||
edf14cdb VB |
549 | static void __init |
550 | flags(void) | |
551 | { | |
552 | unsigned long flags; | |
553 | gfp_t gfp; | |
554 | char *cmp_buffer; | |
555 | ||
556 | flags = 0; | |
557 | test("", "%pGp", &flags); | |
558 | ||
559 | /* Page flags should filter the zone id */ | |
560 | flags = 1UL << NR_PAGEFLAGS; | |
561 | test("", "%pGp", &flags); | |
562 | ||
563 | flags |= 1UL << PG_uptodate | 1UL << PG_dirty | 1UL << PG_lru | |
564 | | 1UL << PG_active | 1UL << PG_swapbacked; | |
565 | test("uptodate|dirty|lru|active|swapbacked", "%pGp", &flags); | |
566 | ||
567 | ||
568 | flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | |
569 | | VM_DENYWRITE; | |
570 | test("read|exec|mayread|maywrite|mayexec|denywrite", "%pGv", &flags); | |
571 | ||
572 | gfp = GFP_TRANSHUGE; | |
573 | test("GFP_TRANSHUGE", "%pGg", &gfp); | |
574 | ||
575 | gfp = GFP_ATOMIC|__GFP_DMA; | |
576 | test("GFP_ATOMIC|GFP_DMA", "%pGg", &gfp); | |
577 | ||
578 | gfp = __GFP_ATOMIC; | |
579 | test("__GFP_ATOMIC", "%pGg", &gfp); | |
580 | ||
581 | cmp_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); | |
582 | if (!cmp_buffer) | |
583 | return; | |
584 | ||
585 | /* Any flags not translated by the table should remain numeric */ | |
586 | gfp = ~__GFP_BITS_MASK; | |
587 | snprintf(cmp_buffer, BUF_SIZE, "%#lx", (unsigned long) gfp); | |
588 | test(cmp_buffer, "%pGg", &gfp); | |
589 | ||
590 | snprintf(cmp_buffer, BUF_SIZE, "__GFP_ATOMIC|%#lx", | |
591 | (unsigned long) gfp); | |
592 | gfp |= __GFP_ATOMIC; | |
593 | test(cmp_buffer, "%pGg", &gfp); | |
594 | ||
595 | kfree(cmp_buffer); | |
596 | } | |
597 | ||
f1ce39df SA |
598 | static void __init fwnode_pointer(void) |
599 | { | |
600 | const struct software_node softnodes[] = { | |
601 | { .name = "first", }, | |
602 | { .name = "second", .parent = &softnodes[0], }, | |
603 | { .name = "third", .parent = &softnodes[1], }, | |
604 | { NULL /* Guardian */ } | |
605 | }; | |
606 | const char * const full_name = "first/second/third"; | |
607 | const char * const full_name_second = "first/second"; | |
608 | const char * const second_name = "second"; | |
609 | const char * const third_name = "third"; | |
610 | int rval; | |
611 | ||
612 | rval = software_node_register_nodes(softnodes); | |
613 | if (rval) { | |
614 | pr_warn("cannot register softnodes; rval %d\n", rval); | |
615 | return; | |
616 | } | |
617 | ||
618 | test(full_name_second, "%pfw", software_node_fwnode(&softnodes[1])); | |
619 | test(full_name, "%pfw", software_node_fwnode(&softnodes[2])); | |
620 | test(full_name, "%pfwf", software_node_fwnode(&softnodes[2])); | |
621 | test(second_name, "%pfwP", software_node_fwnode(&softnodes[1])); | |
622 | test(third_name, "%pfwP", software_node_fwnode(&softnodes[2])); | |
623 | ||
624 | software_node_unregister_nodes(softnodes); | |
625 | } | |
626 | ||
57f5677e RV |
627 | static void __init |
628 | errptr(void) | |
629 | { | |
630 | test("-1234", "%pe", ERR_PTR(-1234)); | |
631 | ||
632 | /* Check that %pe with a non-ERR_PTR gets treated as ordinary %p. */ | |
633 | BUILD_BUG_ON(IS_ERR(PTR)); | |
634 | test_hashed("%pe", PTR); | |
635 | ||
636 | #ifdef CONFIG_SYMBOLIC_ERRNAME | |
637 | test("(-ENOTSOCK)", "(%pe)", ERR_PTR(-ENOTSOCK)); | |
638 | test("(-EAGAIN)", "(%pe)", ERR_PTR(-EAGAIN)); | |
639 | BUILD_BUG_ON(EAGAIN != EWOULDBLOCK); | |
640 | test("(-EAGAIN)", "(%pe)", ERR_PTR(-EWOULDBLOCK)); | |
641 | test("[-EIO ]", "[%-8pe]", ERR_PTR(-EIO)); | |
642 | test("[ -EIO]", "[%8pe]", ERR_PTR(-EIO)); | |
643 | test("-EPROBE_DEFER", "%pe", ERR_PTR(-EPROBE_DEFER)); | |
644 | #endif | |
645 | } | |
646 | ||
707cc728 RV |
647 | static void __init |
648 | test_pointer(void) | |
649 | { | |
650 | plain(); | |
3e5903eb PM |
651 | null_pointer(); |
652 | invalid_pointer(); | |
707cc728 RV |
653 | symbol_ptr(); |
654 | kernel_ptr(); | |
655 | struct_resource(); | |
656 | addr(); | |
657 | escaped_str(); | |
658 | hex_string(); | |
659 | mac(); | |
660 | ip(); | |
661 | uuid(); | |
662 | dentry(); | |
663 | struct_va_format(); | |
4d42c447 | 664 | struct_rtc_time(); |
707cc728 RV |
665 | struct_clk(); |
666 | bitmap(); | |
667 | netdev_features(); | |
edf14cdb | 668 | flags(); |
57f5677e | 669 | errptr(); |
f1ce39df | 670 | fwnode_pointer(); |
707cc728 RV |
671 | } |
672 | ||
6b1a4d5b | 673 | static void __init selftest(void) |
707cc728 | 674 | { |
331e4deb RV |
675 | alloced_buffer = kmalloc(BUF_SIZE + 2*PAD_SIZE, GFP_KERNEL); |
676 | if (!alloced_buffer) | |
6b1a4d5b | 677 | return; |
331e4deb | 678 | test_buffer = alloced_buffer + PAD_SIZE; |
707cc728 RV |
679 | |
680 | test_basic(); | |
681 | test_number(); | |
682 | test_string(); | |
683 | test_pointer(); | |
684 | ||
331e4deb | 685 | kfree(alloced_buffer); |
707cc728 RV |
686 | } |
687 | ||
6b1a4d5b | 688 | KSTM_MODULE_LOADERS(test_printf); |
707cc728 RV |
689 | MODULE_AUTHOR("Rasmus Villemoes <linux@rasmusvillemoes.dk>"); |
690 | MODULE_LICENSE("GPL"); |