Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2 | /* |
| 3 | * Test cases for sscanf facility. |
| 4 | */ |
| 5 | |
| 6 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 7 | |
| 8 | #include <linux/bitops.h> |
| 9 | #include <linux/init.h> |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/overflow.h> |
| 13 | #include <linux/printk.h> |
| 14 | #include <linux/random.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/string.h> |
| 17 | |
| 18 | #include "../tools/testing/selftests/kselftest_module.h" |
| 19 | |
| 20 | #define BUF_SIZE 1024 |
| 21 | |
| 22 | KSTM_MODULE_GLOBALS(); |
| 23 | static char *test_buffer __initdata; |
| 24 | static char *fmt_buffer __initdata; |
| 25 | static struct rnd_state rnd_state __initdata; |
| 26 | |
| 27 | typedef int (*check_fn)(const void *check_data, const char *string, |
| 28 | const char *fmt, int n_args, va_list ap); |
| 29 | |
| 30 | static void __scanf(4, 6) __init |
| 31 | _test(check_fn fn, const void *check_data, const char *string, const char *fmt, |
| 32 | int n_args, ...) |
| 33 | { |
| 34 | va_list ap, ap_copy; |
| 35 | int ret; |
| 36 | |
| 37 | total_tests++; |
| 38 | |
| 39 | va_start(ap, n_args); |
| 40 | va_copy(ap_copy, ap); |
| 41 | ret = vsscanf(string, fmt, ap_copy); |
| 42 | va_end(ap_copy); |
| 43 | |
| 44 | if (ret != n_args) { |
| 45 | pr_warn("vsscanf(\"%s\", \"%s\", ...) returned %d expected %d\n", |
| 46 | string, fmt, ret, n_args); |
| 47 | goto fail; |
| 48 | } |
| 49 | |
| 50 | ret = (*fn)(check_data, string, fmt, n_args, ap); |
| 51 | if (ret) |
| 52 | goto fail; |
| 53 | |
| 54 | va_end(ap); |
| 55 | |
| 56 | return; |
| 57 | |
| 58 | fail: |
| 59 | failed_tests++; |
| 60 | va_end(ap); |
| 61 | } |
| 62 | |
| 63 | #define _check_numbers_template(arg_fmt, expect, str, fmt, n_args, ap) \ |
| 64 | do { \ |
| 65 | pr_debug("\"%s\", \"%s\" ->\n", str, fmt); \ |
| 66 | for (; n_args > 0; n_args--, expect++) { \ |
| 67 | typeof(*expect) got = *va_arg(ap, typeof(expect)); \ |
| 68 | pr_debug("\t" arg_fmt "\n", got); \ |
| 69 | if (got != *expect) { \ |
| 70 | pr_warn("vsscanf(\"%s\", \"%s\", ...) expected " arg_fmt " got " arg_fmt "\n", \ |
| 71 | str, fmt, *expect, got); \ |
| 72 | return 1; \ |
| 73 | } \ |
| 74 | } \ |
| 75 | return 0; \ |
| 76 | } while (0) |
| 77 | |
| 78 | static int __init check_ull(const void *check_data, const char *string, |
| 79 | const char *fmt, int n_args, va_list ap) |
| 80 | { |
| 81 | const unsigned long long *pval = check_data; |
| 82 | |
| 83 | _check_numbers_template("%llu", pval, string, fmt, n_args, ap); |
| 84 | } |
| 85 | |
| 86 | static int __init check_ll(const void *check_data, const char *string, |
| 87 | const char *fmt, int n_args, va_list ap) |
| 88 | { |
| 89 | const long long *pval = check_data; |
| 90 | |
| 91 | _check_numbers_template("%lld", pval, string, fmt, n_args, ap); |
| 92 | } |
| 93 | |
| 94 | static int __init check_ulong(const void *check_data, const char *string, |
| 95 | const char *fmt, int n_args, va_list ap) |
| 96 | { |
| 97 | const unsigned long *pval = check_data; |
| 98 | |
| 99 | _check_numbers_template("%lu", pval, string, fmt, n_args, ap); |
| 100 | } |
| 101 | |
| 102 | static int __init check_long(const void *check_data, const char *string, |
| 103 | const char *fmt, int n_args, va_list ap) |
| 104 | { |
| 105 | const long *pval = check_data; |
| 106 | |
| 107 | _check_numbers_template("%ld", pval, string, fmt, n_args, ap); |
| 108 | } |
| 109 | |
| 110 | static int __init check_uint(const void *check_data, const char *string, |
| 111 | const char *fmt, int n_args, va_list ap) |
| 112 | { |
| 113 | const unsigned int *pval = check_data; |
| 114 | |
| 115 | _check_numbers_template("%u", pval, string, fmt, n_args, ap); |
| 116 | } |
| 117 | |
| 118 | static int __init check_int(const void *check_data, const char *string, |
| 119 | const char *fmt, int n_args, va_list ap) |
| 120 | { |
| 121 | const int *pval = check_data; |
| 122 | |
| 123 | _check_numbers_template("%d", pval, string, fmt, n_args, ap); |
| 124 | } |
| 125 | |
| 126 | static int __init check_ushort(const void *check_data, const char *string, |
| 127 | const char *fmt, int n_args, va_list ap) |
| 128 | { |
| 129 | const unsigned short *pval = check_data; |
| 130 | |
| 131 | _check_numbers_template("%hu", pval, string, fmt, n_args, ap); |
| 132 | } |
| 133 | |
| 134 | static int __init check_short(const void *check_data, const char *string, |
| 135 | const char *fmt, int n_args, va_list ap) |
| 136 | { |
| 137 | const short *pval = check_data; |
| 138 | |
| 139 | _check_numbers_template("%hd", pval, string, fmt, n_args, ap); |
| 140 | } |
| 141 | |
| 142 | static int __init check_uchar(const void *check_data, const char *string, |
| 143 | const char *fmt, int n_args, va_list ap) |
| 144 | { |
| 145 | const unsigned char *pval = check_data; |
| 146 | |
| 147 | _check_numbers_template("%hhu", pval, string, fmt, n_args, ap); |
| 148 | } |
| 149 | |
| 150 | static int __init check_char(const void *check_data, const char *string, |
| 151 | const char *fmt, int n_args, va_list ap) |
| 152 | { |
| 153 | const signed char *pval = check_data; |
| 154 | |
| 155 | _check_numbers_template("%hhd", pval, string, fmt, n_args, ap); |
| 156 | } |
| 157 | |
| 158 | /* Selection of interesting numbers to test, copied from test-kstrtox.c */ |
| 159 | static const unsigned long long numbers[] __initconst = { |
| 160 | 0x0ULL, |
| 161 | 0x1ULL, |
| 162 | 0x7fULL, |
| 163 | 0x80ULL, |
| 164 | 0x81ULL, |
| 165 | 0xffULL, |
| 166 | 0x100ULL, |
| 167 | 0x101ULL, |
| 168 | 0x7fffULL, |
| 169 | 0x8000ULL, |
| 170 | 0x8001ULL, |
| 171 | 0xffffULL, |
| 172 | 0x10000ULL, |
| 173 | 0x10001ULL, |
| 174 | 0x7fffffffULL, |
| 175 | 0x80000000ULL, |
| 176 | 0x80000001ULL, |
| 177 | 0xffffffffULL, |
| 178 | 0x100000000ULL, |
| 179 | 0x100000001ULL, |
| 180 | 0x7fffffffffffffffULL, |
| 181 | 0x8000000000000000ULL, |
| 182 | 0x8000000000000001ULL, |
| 183 | 0xfffffffffffffffeULL, |
| 184 | 0xffffffffffffffffULL, |
| 185 | }; |
| 186 | |
| 187 | #define value_representable_in_type(T, val) \ |
| 188 | (is_signed_type(T) \ |
| 189 | ? ((long long)(val) >= type_min(T)) && ((long long)(val) <= type_max(T)) \ |
Richard Fitzgerald | 1b93268 | 2021-05-25 13:20:11 +0100 | [diff] [blame] | 190 | : ((unsigned long long)(val) <= type_max(T))) |
| 191 | |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 192 | |
| 193 | #define test_one_number(T, gen_fmt, scan_fmt, val, fn) \ |
| 194 | do { \ |
| 195 | const T expect_val = (T)(val); \ |
| 196 | T result = ~expect_val; /* should be overwritten */ \ |
| 197 | \ |
| 198 | snprintf(test_buffer, BUF_SIZE, gen_fmt, expect_val); \ |
| 199 | _test(fn, &expect_val, test_buffer, "%" scan_fmt, 1, &result); \ |
| 200 | } while (0) |
| 201 | |
| 202 | #define simple_numbers_loop(T, gen_fmt, scan_fmt, fn) \ |
| 203 | do { \ |
| 204 | int i; \ |
| 205 | \ |
| 206 | for (i = 0; i < ARRAY_SIZE(numbers); i++) { \ |
Richard Fitzgerald | 1b93268 | 2021-05-25 13:20:11 +0100 | [diff] [blame] | 207 | if (value_representable_in_type(T, numbers[i])) \ |
| 208 | test_one_number(T, gen_fmt, scan_fmt, \ |
| 209 | numbers[i], fn); \ |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 210 | \ |
Richard Fitzgerald | 1b93268 | 2021-05-25 13:20:11 +0100 | [diff] [blame] | 211 | if (value_representable_in_type(T, -numbers[i])) \ |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 212 | test_one_number(T, gen_fmt, scan_fmt, \ |
| 213 | -numbers[i], fn); \ |
| 214 | } \ |
| 215 | } while (0) |
| 216 | |
| 217 | static void __init numbers_simple(void) |
| 218 | { |
| 219 | simple_numbers_loop(unsigned long long, "%llu", "llu", check_ull); |
| 220 | simple_numbers_loop(long long, "%lld", "lld", check_ll); |
| 221 | simple_numbers_loop(long long, "%lld", "lli", check_ll); |
| 222 | simple_numbers_loop(unsigned long long, "%llx", "llx", check_ull); |
| 223 | simple_numbers_loop(long long, "%llx", "llx", check_ll); |
| 224 | simple_numbers_loop(long long, "0x%llx", "lli", check_ll); |
| 225 | simple_numbers_loop(unsigned long long, "0x%llx", "llx", check_ull); |
| 226 | simple_numbers_loop(long long, "0x%llx", "llx", check_ll); |
| 227 | |
| 228 | simple_numbers_loop(unsigned long, "%lu", "lu", check_ulong); |
| 229 | simple_numbers_loop(long, "%ld", "ld", check_long); |
| 230 | simple_numbers_loop(long, "%ld", "li", check_long); |
| 231 | simple_numbers_loop(unsigned long, "%lx", "lx", check_ulong); |
| 232 | simple_numbers_loop(long, "%lx", "lx", check_long); |
| 233 | simple_numbers_loop(long, "0x%lx", "li", check_long); |
| 234 | simple_numbers_loop(unsigned long, "0x%lx", "lx", check_ulong); |
| 235 | simple_numbers_loop(long, "0x%lx", "lx", check_long); |
| 236 | |
| 237 | simple_numbers_loop(unsigned int, "%u", "u", check_uint); |
| 238 | simple_numbers_loop(int, "%d", "d", check_int); |
| 239 | simple_numbers_loop(int, "%d", "i", check_int); |
| 240 | simple_numbers_loop(unsigned int, "%x", "x", check_uint); |
| 241 | simple_numbers_loop(int, "%x", "x", check_int); |
| 242 | simple_numbers_loop(int, "0x%x", "i", check_int); |
| 243 | simple_numbers_loop(unsigned int, "0x%x", "x", check_uint); |
| 244 | simple_numbers_loop(int, "0x%x", "x", check_int); |
| 245 | |
| 246 | simple_numbers_loop(unsigned short, "%hu", "hu", check_ushort); |
| 247 | simple_numbers_loop(short, "%hd", "hd", check_short); |
| 248 | simple_numbers_loop(short, "%hd", "hi", check_short); |
| 249 | simple_numbers_loop(unsigned short, "%hx", "hx", check_ushort); |
| 250 | simple_numbers_loop(short, "%hx", "hx", check_short); |
| 251 | simple_numbers_loop(short, "0x%hx", "hi", check_short); |
| 252 | simple_numbers_loop(unsigned short, "0x%hx", "hx", check_ushort); |
| 253 | simple_numbers_loop(short, "0x%hx", "hx", check_short); |
| 254 | |
| 255 | simple_numbers_loop(unsigned char, "%hhu", "hhu", check_uchar); |
| 256 | simple_numbers_loop(signed char, "%hhd", "hhd", check_char); |
| 257 | simple_numbers_loop(signed char, "%hhd", "hhi", check_char); |
| 258 | simple_numbers_loop(unsigned char, "%hhx", "hhx", check_uchar); |
| 259 | simple_numbers_loop(signed char, "%hhx", "hhx", check_char); |
| 260 | simple_numbers_loop(signed char, "0x%hhx", "hhi", check_char); |
| 261 | simple_numbers_loop(unsigned char, "0x%hhx", "hhx", check_uchar); |
| 262 | simple_numbers_loop(signed char, "0x%hhx", "hhx", check_char); |
| 263 | } |
| 264 | |
| 265 | /* |
| 266 | * This gives a better variety of number "lengths" in a small sample than |
| 267 | * the raw prandom*() functions (Not mathematically rigorous!!). |
| 268 | * Variabilty of length and value is more important than perfect randomness. |
| 269 | */ |
| 270 | static u32 __init next_test_random(u32 max_bits) |
| 271 | { |
| 272 | u32 n_bits = hweight32(prandom_u32_state(&rnd_state)) % (max_bits + 1); |
| 273 | |
Andy Shevchenko | fe8e3ee | 2021-07-27 18:01:32 +0300 | [diff] [blame] | 274 | return prandom_u32_state(&rnd_state) & GENMASK(n_bits, 0); |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 275 | } |
| 276 | |
| 277 | static unsigned long long __init next_test_random_ull(void) |
| 278 | { |
| 279 | u32 rand1 = prandom_u32_state(&rnd_state); |
| 280 | u32 n_bits = (hweight32(rand1) * 3) % 64; |
| 281 | u64 val = (u64)prandom_u32_state(&rnd_state) * rand1; |
| 282 | |
Andy Shevchenko | fe8e3ee | 2021-07-27 18:01:32 +0300 | [diff] [blame] | 283 | return val & GENMASK_ULL(n_bits, 0); |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | #define random_for_type(T) \ |
| 287 | ((T)(sizeof(T) <= sizeof(u32) \ |
| 288 | ? next_test_random(BITS_PER_TYPE(T)) \ |
| 289 | : next_test_random_ull())) |
| 290 | |
| 291 | /* |
| 292 | * Define a pattern of negative and positive numbers to ensure we get |
| 293 | * some of both within the small number of samples in a test string. |
| 294 | */ |
| 295 | #define NEGATIVES_PATTERN 0x3246 /* 00110010 01000110 */ |
| 296 | |
| 297 | #define fill_random_array(arr) \ |
| 298 | do { \ |
| 299 | unsigned int neg_pattern = NEGATIVES_PATTERN; \ |
| 300 | int i; \ |
| 301 | \ |
| 302 | for (i = 0; i < ARRAY_SIZE(arr); i++, neg_pattern >>= 1) { \ |
| 303 | (arr)[i] = random_for_type(typeof((arr)[0])); \ |
| 304 | if (is_signed_type(typeof((arr)[0])) && (neg_pattern & 1)) \ |
| 305 | (arr)[i] = -(arr)[i]; \ |
| 306 | } \ |
| 307 | } while (0) |
| 308 | |
| 309 | /* |
| 310 | * Convenience wrapper around snprintf() to append at buf_pos in buf, |
| 311 | * updating buf_pos and returning the number of characters appended. |
| 312 | * On error buf_pos is not changed and return value is 0. |
| 313 | */ |
| 314 | static int __init __printf(4, 5) |
| 315 | append_fmt(char *buf, int *buf_pos, int buf_len, const char *val_fmt, ...) |
| 316 | { |
| 317 | va_list ap; |
| 318 | int field_len; |
| 319 | |
| 320 | va_start(ap, val_fmt); |
| 321 | field_len = vsnprintf(buf + *buf_pos, buf_len - *buf_pos, val_fmt, ap); |
| 322 | va_end(ap); |
| 323 | |
| 324 | if (field_len < 0) |
| 325 | field_len = 0; |
| 326 | |
| 327 | *buf_pos += field_len; |
| 328 | |
| 329 | return field_len; |
| 330 | } |
| 331 | |
| 332 | /* |
| 333 | * Convenience function to append the field delimiter string |
| 334 | * to both the value string and format string buffers. |
| 335 | */ |
| 336 | static void __init append_delim(char *str_buf, int *str_buf_pos, int str_buf_len, |
| 337 | char *fmt_buf, int *fmt_buf_pos, int fmt_buf_len, |
| 338 | const char *delim_str) |
| 339 | { |
| 340 | append_fmt(str_buf, str_buf_pos, str_buf_len, delim_str); |
| 341 | append_fmt(fmt_buf, fmt_buf_pos, fmt_buf_len, delim_str); |
| 342 | } |
| 343 | |
| 344 | #define test_array_8(fn, check_data, string, fmt, arr) \ |
| 345 | do { \ |
| 346 | BUILD_BUG_ON(ARRAY_SIZE(arr) != 8); \ |
| 347 | _test(fn, check_data, string, fmt, 8, \ |
| 348 | &(arr)[0], &(arr)[1], &(arr)[2], &(arr)[3], \ |
| 349 | &(arr)[4], &(arr)[5], &(arr)[6], &(arr)[7]); \ |
| 350 | } while (0) |
| 351 | |
| 352 | #define numbers_list_8(T, gen_fmt, field_sep, scan_fmt, fn) \ |
| 353 | do { \ |
| 354 | int i, pos = 0, fmt_pos = 0; \ |
| 355 | T expect[8], result[8]; \ |
| 356 | \ |
| 357 | fill_random_array(expect); \ |
| 358 | \ |
| 359 | for (i = 0; i < ARRAY_SIZE(expect); i++) { \ |
| 360 | if (i != 0) \ |
| 361 | append_delim(test_buffer, &pos, BUF_SIZE, \ |
| 362 | fmt_buffer, &fmt_pos, BUF_SIZE, \ |
| 363 | field_sep); \ |
| 364 | \ |
| 365 | append_fmt(test_buffer, &pos, BUF_SIZE, gen_fmt, expect[i]); \ |
| 366 | append_fmt(fmt_buffer, &fmt_pos, BUF_SIZE, "%%%s", scan_fmt); \ |
| 367 | } \ |
| 368 | \ |
| 369 | test_array_8(fn, expect, test_buffer, fmt_buffer, result); \ |
| 370 | } while (0) |
| 371 | |
| 372 | #define numbers_list_fix_width(T, gen_fmt, field_sep, width, scan_fmt, fn) \ |
| 373 | do { \ |
| 374 | char full_fmt[16]; \ |
| 375 | \ |
| 376 | snprintf(full_fmt, sizeof(full_fmt), "%u%s", width, scan_fmt); \ |
| 377 | numbers_list_8(T, gen_fmt, field_sep, full_fmt, fn); \ |
| 378 | } while (0) |
| 379 | |
| 380 | #define numbers_list_val_width(T, gen_fmt, field_sep, scan_fmt, fn) \ |
| 381 | do { \ |
| 382 | int i, val_len, pos = 0, fmt_pos = 0; \ |
| 383 | T expect[8], result[8]; \ |
| 384 | \ |
| 385 | fill_random_array(expect); \ |
| 386 | \ |
| 387 | for (i = 0; i < ARRAY_SIZE(expect); i++) { \ |
| 388 | if (i != 0) \ |
| 389 | append_delim(test_buffer, &pos, BUF_SIZE, \ |
| 390 | fmt_buffer, &fmt_pos, BUF_SIZE, field_sep);\ |
| 391 | \ |
| 392 | val_len = append_fmt(test_buffer, &pos, BUF_SIZE, gen_fmt, \ |
| 393 | expect[i]); \ |
| 394 | append_fmt(fmt_buffer, &fmt_pos, BUF_SIZE, \ |
| 395 | "%%%u%s", val_len, scan_fmt); \ |
| 396 | } \ |
| 397 | \ |
| 398 | test_array_8(fn, expect, test_buffer, fmt_buffer, result); \ |
| 399 | } while (0) |
| 400 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 401 | static void __init numbers_list_ll(const char *delim) |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 402 | { |
| 403 | numbers_list_8(unsigned long long, "%llu", delim, "llu", check_ull); |
| 404 | numbers_list_8(long long, "%lld", delim, "lld", check_ll); |
| 405 | numbers_list_8(long long, "%lld", delim, "lli", check_ll); |
| 406 | numbers_list_8(unsigned long long, "%llx", delim, "llx", check_ull); |
| 407 | numbers_list_8(unsigned long long, "0x%llx", delim, "llx", check_ull); |
| 408 | numbers_list_8(long long, "0x%llx", delim, "lli", check_ll); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 409 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 410 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 411 | static void __init numbers_list_l(const char *delim) |
| 412 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 413 | numbers_list_8(unsigned long, "%lu", delim, "lu", check_ulong); |
| 414 | numbers_list_8(long, "%ld", delim, "ld", check_long); |
| 415 | numbers_list_8(long, "%ld", delim, "li", check_long); |
| 416 | numbers_list_8(unsigned long, "%lx", delim, "lx", check_ulong); |
| 417 | numbers_list_8(unsigned long, "0x%lx", delim, "lx", check_ulong); |
| 418 | numbers_list_8(long, "0x%lx", delim, "li", check_long); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 419 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 420 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 421 | static void __init numbers_list_d(const char *delim) |
| 422 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 423 | numbers_list_8(unsigned int, "%u", delim, "u", check_uint); |
| 424 | numbers_list_8(int, "%d", delim, "d", check_int); |
| 425 | numbers_list_8(int, "%d", delim, "i", check_int); |
| 426 | numbers_list_8(unsigned int, "%x", delim, "x", check_uint); |
| 427 | numbers_list_8(unsigned int, "0x%x", delim, "x", check_uint); |
| 428 | numbers_list_8(int, "0x%x", delim, "i", check_int); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 429 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 430 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 431 | static void __init numbers_list_h(const char *delim) |
| 432 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 433 | numbers_list_8(unsigned short, "%hu", delim, "hu", check_ushort); |
| 434 | numbers_list_8(short, "%hd", delim, "hd", check_short); |
| 435 | numbers_list_8(short, "%hd", delim, "hi", check_short); |
| 436 | numbers_list_8(unsigned short, "%hx", delim, "hx", check_ushort); |
| 437 | numbers_list_8(unsigned short, "0x%hx", delim, "hx", check_ushort); |
| 438 | numbers_list_8(short, "0x%hx", delim, "hi", check_short); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 439 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 440 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 441 | static void __init numbers_list_hh(const char *delim) |
| 442 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 443 | numbers_list_8(unsigned char, "%hhu", delim, "hhu", check_uchar); |
| 444 | numbers_list_8(signed char, "%hhd", delim, "hhd", check_char); |
| 445 | numbers_list_8(signed char, "%hhd", delim, "hhi", check_char); |
| 446 | numbers_list_8(unsigned char, "%hhx", delim, "hhx", check_uchar); |
| 447 | numbers_list_8(unsigned char, "0x%hhx", delim, "hhx", check_uchar); |
| 448 | numbers_list_8(signed char, "0x%hhx", delim, "hhi", check_char); |
| 449 | } |
| 450 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 451 | static void __init numbers_list(const char *delim) |
| 452 | { |
| 453 | numbers_list_ll(delim); |
| 454 | numbers_list_l(delim); |
| 455 | numbers_list_d(delim); |
| 456 | numbers_list_h(delim); |
| 457 | numbers_list_hh(delim); |
| 458 | } |
| 459 | |
| 460 | static void __init numbers_list_field_width_ll(const char *delim) |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 461 | { |
| 462 | numbers_list_fix_width(unsigned long long, "%llu", delim, 20, "llu", check_ull); |
| 463 | numbers_list_fix_width(long long, "%lld", delim, 20, "lld", check_ll); |
| 464 | numbers_list_fix_width(long long, "%lld", delim, 20, "lli", check_ll); |
| 465 | numbers_list_fix_width(unsigned long long, "%llx", delim, 16, "llx", check_ull); |
| 466 | numbers_list_fix_width(unsigned long long, "0x%llx", delim, 18, "llx", check_ull); |
| 467 | numbers_list_fix_width(long long, "0x%llx", delim, 18, "lli", check_ll); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 468 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 469 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 470 | static void __init numbers_list_field_width_l(const char *delim) |
| 471 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 472 | #if BITS_PER_LONG == 64 |
| 473 | numbers_list_fix_width(unsigned long, "%lu", delim, 20, "lu", check_ulong); |
| 474 | numbers_list_fix_width(long, "%ld", delim, 20, "ld", check_long); |
| 475 | numbers_list_fix_width(long, "%ld", delim, 20, "li", check_long); |
| 476 | numbers_list_fix_width(unsigned long, "%lx", delim, 16, "lx", check_ulong); |
| 477 | numbers_list_fix_width(unsigned long, "0x%lx", delim, 18, "lx", check_ulong); |
| 478 | numbers_list_fix_width(long, "0x%lx", delim, 18, "li", check_long); |
| 479 | #else |
| 480 | numbers_list_fix_width(unsigned long, "%lu", delim, 10, "lu", check_ulong); |
| 481 | numbers_list_fix_width(long, "%ld", delim, 11, "ld", check_long); |
| 482 | numbers_list_fix_width(long, "%ld", delim, 11, "li", check_long); |
| 483 | numbers_list_fix_width(unsigned long, "%lx", delim, 8, "lx", check_ulong); |
| 484 | numbers_list_fix_width(unsigned long, "0x%lx", delim, 10, "lx", check_ulong); |
| 485 | numbers_list_fix_width(long, "0x%lx", delim, 10, "li", check_long); |
| 486 | #endif |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 487 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 488 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 489 | static void __init numbers_list_field_width_d(const char *delim) |
| 490 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 491 | numbers_list_fix_width(unsigned int, "%u", delim, 10, "u", check_uint); |
| 492 | numbers_list_fix_width(int, "%d", delim, 11, "d", check_int); |
| 493 | numbers_list_fix_width(int, "%d", delim, 11, "i", check_int); |
| 494 | numbers_list_fix_width(unsigned int, "%x", delim, 8, "x", check_uint); |
| 495 | numbers_list_fix_width(unsigned int, "0x%x", delim, 10, "x", check_uint); |
| 496 | numbers_list_fix_width(int, "0x%x", delim, 10, "i", check_int); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 497 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 498 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 499 | static void __init numbers_list_field_width_h(const char *delim) |
| 500 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 501 | numbers_list_fix_width(unsigned short, "%hu", delim, 5, "hu", check_ushort); |
| 502 | numbers_list_fix_width(short, "%hd", delim, 6, "hd", check_short); |
| 503 | numbers_list_fix_width(short, "%hd", delim, 6, "hi", check_short); |
| 504 | numbers_list_fix_width(unsigned short, "%hx", delim, 4, "hx", check_ushort); |
| 505 | numbers_list_fix_width(unsigned short, "0x%hx", delim, 6, "hx", check_ushort); |
| 506 | numbers_list_fix_width(short, "0x%hx", delim, 6, "hi", check_short); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 507 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 508 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 509 | static void __init numbers_list_field_width_hh(const char *delim) |
| 510 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 511 | numbers_list_fix_width(unsigned char, "%hhu", delim, 3, "hhu", check_uchar); |
| 512 | numbers_list_fix_width(signed char, "%hhd", delim, 4, "hhd", check_char); |
| 513 | numbers_list_fix_width(signed char, "%hhd", delim, 4, "hhi", check_char); |
| 514 | numbers_list_fix_width(unsigned char, "%hhx", delim, 2, "hhx", check_uchar); |
| 515 | numbers_list_fix_width(unsigned char, "0x%hhx", delim, 4, "hhx", check_uchar); |
| 516 | numbers_list_fix_width(signed char, "0x%hhx", delim, 4, "hhi", check_char); |
| 517 | } |
| 518 | |
| 519 | /* |
| 520 | * List of numbers separated by delim. Each field width specifier is the |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 521 | * maximum possible digits for the given type and base. |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 522 | */ |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 523 | static void __init numbers_list_field_width_typemax(const char *delim) |
| 524 | { |
| 525 | numbers_list_field_width_ll(delim); |
| 526 | numbers_list_field_width_l(delim); |
| 527 | numbers_list_field_width_d(delim); |
| 528 | numbers_list_field_width_h(delim); |
| 529 | numbers_list_field_width_hh(delim); |
| 530 | } |
| 531 | |
| 532 | static void __init numbers_list_field_width_val_ll(const char *delim) |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 533 | { |
| 534 | numbers_list_val_width(unsigned long long, "%llu", delim, "llu", check_ull); |
| 535 | numbers_list_val_width(long long, "%lld", delim, "lld", check_ll); |
| 536 | numbers_list_val_width(long long, "%lld", delim, "lli", check_ll); |
| 537 | numbers_list_val_width(unsigned long long, "%llx", delim, "llx", check_ull); |
| 538 | numbers_list_val_width(unsigned long long, "0x%llx", delim, "llx", check_ull); |
| 539 | numbers_list_val_width(long long, "0x%llx", delim, "lli", check_ll); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 540 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 541 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 542 | static void __init numbers_list_field_width_val_l(const char *delim) |
| 543 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 544 | numbers_list_val_width(unsigned long, "%lu", delim, "lu", check_ulong); |
| 545 | numbers_list_val_width(long, "%ld", delim, "ld", check_long); |
| 546 | numbers_list_val_width(long, "%ld", delim, "li", check_long); |
| 547 | numbers_list_val_width(unsigned long, "%lx", delim, "lx", check_ulong); |
| 548 | numbers_list_val_width(unsigned long, "0x%lx", delim, "lx", check_ulong); |
| 549 | numbers_list_val_width(long, "0x%lx", delim, "li", check_long); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 550 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 551 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 552 | static void __init numbers_list_field_width_val_d(const char *delim) |
| 553 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 554 | numbers_list_val_width(unsigned int, "%u", delim, "u", check_uint); |
| 555 | numbers_list_val_width(int, "%d", delim, "d", check_int); |
| 556 | numbers_list_val_width(int, "%d", delim, "i", check_int); |
| 557 | numbers_list_val_width(unsigned int, "%x", delim, "x", check_uint); |
| 558 | numbers_list_val_width(unsigned int, "0x%x", delim, "x", check_uint); |
| 559 | numbers_list_val_width(int, "0x%x", delim, "i", check_int); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 560 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 561 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 562 | static void __init numbers_list_field_width_val_h(const char *delim) |
| 563 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 564 | numbers_list_val_width(unsigned short, "%hu", delim, "hu", check_ushort); |
| 565 | numbers_list_val_width(short, "%hd", delim, "hd", check_short); |
| 566 | numbers_list_val_width(short, "%hd", delim, "hi", check_short); |
| 567 | numbers_list_val_width(unsigned short, "%hx", delim, "hx", check_ushort); |
| 568 | numbers_list_val_width(unsigned short, "0x%hx", delim, "hx", check_ushort); |
| 569 | numbers_list_val_width(short, "0x%hx", delim, "hi", check_short); |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 570 | } |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 571 | |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 572 | static void __init numbers_list_field_width_val_hh(const char *delim) |
| 573 | { |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 574 | numbers_list_val_width(unsigned char, "%hhu", delim, "hhu", check_uchar); |
| 575 | numbers_list_val_width(signed char, "%hhd", delim, "hhd", check_char); |
| 576 | numbers_list_val_width(signed char, "%hhd", delim, "hhi", check_char); |
| 577 | numbers_list_val_width(unsigned char, "%hhx", delim, "hhx", check_uchar); |
| 578 | numbers_list_val_width(unsigned char, "0x%hhx", delim, "hhx", check_uchar); |
| 579 | numbers_list_val_width(signed char, "0x%hhx", delim, "hhi", check_char); |
| 580 | } |
| 581 | |
| 582 | /* |
Linus Torvalds | ba7b1f8 | 2021-09-06 11:04:03 -0700 | [diff] [blame] | 583 | * List of numbers separated by delim. Each field width specifier is the |
| 584 | * exact length of the corresponding value digits in the string being scanned. |
| 585 | */ |
| 586 | static void __init numbers_list_field_width_val_width(const char *delim) |
| 587 | { |
| 588 | numbers_list_field_width_val_ll(delim); |
| 589 | numbers_list_field_width_val_l(delim); |
| 590 | numbers_list_field_width_val_d(delim); |
| 591 | numbers_list_field_width_val_h(delim); |
| 592 | numbers_list_field_width_val_hh(delim); |
| 593 | } |
| 594 | |
| 595 | /* |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 596 | * Slice a continuous string of digits without field delimiters, containing |
| 597 | * numbers of varying length, using the field width to extract each group |
| 598 | * of digits. For example the hex values c0,3,bf01,303 would have a |
| 599 | * string representation of "c03bf01303" and extracted with "%2x%1x%4x%3x". |
| 600 | */ |
| 601 | static void __init numbers_slice(void) |
| 602 | { |
| 603 | numbers_list_field_width_val_width(""); |
| 604 | } |
| 605 | |
| 606 | #define test_number_prefix(T, str, scan_fmt, expect0, expect1, n_args, fn) \ |
| 607 | do { \ |
| 608 | const T expect[2] = { expect0, expect1 }; \ |
Nathan Chancellor | 92382d7 | 2023-08-07 08:36:28 -0700 | [diff] [blame] | 609 | T result[2] = { (T)~expect[0], (T)~expect[1] }; \ |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 610 | \ |
| 611 | _test(fn, &expect, str, scan_fmt, n_args, &result[0], &result[1]); \ |
| 612 | } while (0) |
| 613 | |
| 614 | /* |
| 615 | * Number prefix is >= field width. |
| 616 | * Expected behaviour is derived from testing userland sscanf. |
| 617 | */ |
| 618 | static void __init numbers_prefix_overflow(void) |
| 619 | { |
| 620 | /* |
| 621 | * Negative decimal with a field of width 1, should quit scanning |
| 622 | * and return 0. |
| 623 | */ |
| 624 | test_number_prefix(long long, "-1 1", "%1lld %lld", 0, 0, 0, check_ll); |
| 625 | test_number_prefix(long, "-1 1", "%1ld %ld", 0, 0, 0, check_long); |
| 626 | test_number_prefix(int, "-1 1", "%1d %d", 0, 0, 0, check_int); |
| 627 | test_number_prefix(short, "-1 1", "%1hd %hd", 0, 0, 0, check_short); |
| 628 | test_number_prefix(signed char, "-1 1", "%1hhd %hhd", 0, 0, 0, check_char); |
| 629 | |
| 630 | test_number_prefix(long long, "-1 1", "%1lli %lli", 0, 0, 0, check_ll); |
| 631 | test_number_prefix(long, "-1 1", "%1li %li", 0, 0, 0, check_long); |
| 632 | test_number_prefix(int, "-1 1", "%1i %i", 0, 0, 0, check_int); |
| 633 | test_number_prefix(short, "-1 1", "%1hi %hi", 0, 0, 0, check_short); |
| 634 | test_number_prefix(signed char, "-1 1", "%1hhi %hhi", 0, 0, 0, check_char); |
| 635 | |
| 636 | /* |
| 637 | * 0x prefix in a field of width 1: 0 is a valid digit so should |
| 638 | * convert. Next field scan starts at the 'x' which isn't a digit so |
| 639 | * scan quits with one field converted. |
| 640 | */ |
| 641 | test_number_prefix(unsigned long long, "0xA7", "%1llx%llx", 0, 0, 1, check_ull); |
| 642 | test_number_prefix(unsigned long, "0xA7", "%1lx%lx", 0, 0, 1, check_ulong); |
| 643 | test_number_prefix(unsigned int, "0xA7", "%1x%x", 0, 0, 1, check_uint); |
| 644 | test_number_prefix(unsigned short, "0xA7", "%1hx%hx", 0, 0, 1, check_ushort); |
| 645 | test_number_prefix(unsigned char, "0xA7", "%1hhx%hhx", 0, 0, 1, check_uchar); |
| 646 | test_number_prefix(long long, "0xA7", "%1lli%llx", 0, 0, 1, check_ll); |
| 647 | test_number_prefix(long, "0xA7", "%1li%lx", 0, 0, 1, check_long); |
| 648 | test_number_prefix(int, "0xA7", "%1i%x", 0, 0, 1, check_int); |
| 649 | test_number_prefix(short, "0xA7", "%1hi%hx", 0, 0, 1, check_short); |
| 650 | test_number_prefix(char, "0xA7", "%1hhi%hhx", 0, 0, 1, check_char); |
| 651 | |
| 652 | /* |
| 653 | * 0x prefix in a field of width 2 using %x conversion: first field |
| 654 | * converts to 0. Next field scan starts at the character after "0x". |
| 655 | * Both fields will convert. |
| 656 | */ |
| 657 | test_number_prefix(unsigned long long, "0xA7", "%2llx%llx", 0, 0xa7, 2, check_ull); |
| 658 | test_number_prefix(unsigned long, "0xA7", "%2lx%lx", 0, 0xa7, 2, check_ulong); |
| 659 | test_number_prefix(unsigned int, "0xA7", "%2x%x", 0, 0xa7, 2, check_uint); |
| 660 | test_number_prefix(unsigned short, "0xA7", "%2hx%hx", 0, 0xa7, 2, check_ushort); |
| 661 | test_number_prefix(unsigned char, "0xA7", "%2hhx%hhx", 0, 0xa7, 2, check_uchar); |
| 662 | |
| 663 | /* |
| 664 | * 0x prefix in a field of width 2 using %i conversion: first field |
| 665 | * converts to 0. Next field scan starts at the character after "0x", |
Zhen Lei | 53b0fe3 | 2021-07-07 18:07:28 -0700 | [diff] [blame] | 666 | * which will convert if can be interpreted as decimal but will fail |
Richard Fitzgerald | 50f530e | 2021-05-14 17:12:05 +0100 | [diff] [blame] | 667 | * if it contains any hex digits (since no 0x prefix). |
| 668 | */ |
| 669 | test_number_prefix(long long, "0x67", "%2lli%lli", 0, 67, 2, check_ll); |
| 670 | test_number_prefix(long, "0x67", "%2li%li", 0, 67, 2, check_long); |
| 671 | test_number_prefix(int, "0x67", "%2i%i", 0, 67, 2, check_int); |
| 672 | test_number_prefix(short, "0x67", "%2hi%hi", 0, 67, 2, check_short); |
| 673 | test_number_prefix(char, "0x67", "%2hhi%hhi", 0, 67, 2, check_char); |
| 674 | |
| 675 | test_number_prefix(long long, "0xA7", "%2lli%lli", 0, 0, 1, check_ll); |
| 676 | test_number_prefix(long, "0xA7", "%2li%li", 0, 0, 1, check_long); |
| 677 | test_number_prefix(int, "0xA7", "%2i%i", 0, 0, 1, check_int); |
| 678 | test_number_prefix(short, "0xA7", "%2hi%hi", 0, 0, 1, check_short); |
| 679 | test_number_prefix(char, "0xA7", "%2hhi%hhi", 0, 0, 1, check_char); |
| 680 | } |
| 681 | |
| 682 | #define _test_simple_strtoxx(T, fn, gen_fmt, expect, base) \ |
| 683 | do { \ |
| 684 | T got; \ |
| 685 | char *endp; \ |
| 686 | int len; \ |
| 687 | bool fail = false; \ |
| 688 | \ |
| 689 | total_tests++; \ |
| 690 | len = snprintf(test_buffer, BUF_SIZE, gen_fmt, expect); \ |
| 691 | got = (fn)(test_buffer, &endp, base); \ |
| 692 | pr_debug(#fn "(\"%s\", %d) -> " gen_fmt "\n", test_buffer, base, got); \ |
| 693 | if (got != (expect)) { \ |
| 694 | fail = true; \ |
| 695 | pr_warn(#fn "(\"%s\", %d): got " gen_fmt " expected " gen_fmt "\n", \ |
| 696 | test_buffer, base, got, expect); \ |
| 697 | } else if (endp != test_buffer + len) { \ |
| 698 | fail = true; \ |
| 699 | pr_warn(#fn "(\"%s\", %d) startp=0x%px got endp=0x%px expected 0x%px\n", \ |
| 700 | test_buffer, base, test_buffer, \ |
| 701 | test_buffer + len, endp); \ |
| 702 | } \ |
| 703 | \ |
| 704 | if (fail) \ |
| 705 | failed_tests++; \ |
| 706 | } while (0) |
| 707 | |
| 708 | #define test_simple_strtoxx(T, fn, gen_fmt, base) \ |
| 709 | do { \ |
| 710 | int i; \ |
| 711 | \ |
| 712 | for (i = 0; i < ARRAY_SIZE(numbers); i++) { \ |
| 713 | _test_simple_strtoxx(T, fn, gen_fmt, (T)numbers[i], base); \ |
| 714 | \ |
| 715 | if (is_signed_type(T)) \ |
| 716 | _test_simple_strtoxx(T, fn, gen_fmt, \ |
| 717 | -(T)numbers[i], base); \ |
| 718 | } \ |
| 719 | } while (0) |
| 720 | |
| 721 | static void __init test_simple_strtoull(void) |
| 722 | { |
| 723 | test_simple_strtoxx(unsigned long long, simple_strtoull, "%llu", 10); |
| 724 | test_simple_strtoxx(unsigned long long, simple_strtoull, "%llu", 0); |
| 725 | test_simple_strtoxx(unsigned long long, simple_strtoull, "%llx", 16); |
| 726 | test_simple_strtoxx(unsigned long long, simple_strtoull, "0x%llx", 16); |
| 727 | test_simple_strtoxx(unsigned long long, simple_strtoull, "0x%llx", 0); |
| 728 | } |
| 729 | |
| 730 | static void __init test_simple_strtoll(void) |
| 731 | { |
| 732 | test_simple_strtoxx(long long, simple_strtoll, "%lld", 10); |
| 733 | test_simple_strtoxx(long long, simple_strtoll, "%lld", 0); |
| 734 | test_simple_strtoxx(long long, simple_strtoll, "%llx", 16); |
| 735 | test_simple_strtoxx(long long, simple_strtoll, "0x%llx", 16); |
| 736 | test_simple_strtoxx(long long, simple_strtoll, "0x%llx", 0); |
| 737 | } |
| 738 | |
| 739 | static void __init test_simple_strtoul(void) |
| 740 | { |
| 741 | test_simple_strtoxx(unsigned long, simple_strtoul, "%lu", 10); |
| 742 | test_simple_strtoxx(unsigned long, simple_strtoul, "%lu", 0); |
| 743 | test_simple_strtoxx(unsigned long, simple_strtoul, "%lx", 16); |
| 744 | test_simple_strtoxx(unsigned long, simple_strtoul, "0x%lx", 16); |
| 745 | test_simple_strtoxx(unsigned long, simple_strtoul, "0x%lx", 0); |
| 746 | } |
| 747 | |
| 748 | static void __init test_simple_strtol(void) |
| 749 | { |
| 750 | test_simple_strtoxx(long, simple_strtol, "%ld", 10); |
| 751 | test_simple_strtoxx(long, simple_strtol, "%ld", 0); |
| 752 | test_simple_strtoxx(long, simple_strtol, "%lx", 16); |
| 753 | test_simple_strtoxx(long, simple_strtol, "0x%lx", 16); |
| 754 | test_simple_strtoxx(long, simple_strtol, "0x%lx", 0); |
| 755 | } |
| 756 | |
| 757 | /* Selection of common delimiters/separators between numbers in a string. */ |
| 758 | static const char * const number_delimiters[] __initconst = { |
| 759 | " ", ":", ",", "-", "/", |
| 760 | }; |
| 761 | |
| 762 | static void __init test_numbers(void) |
| 763 | { |
| 764 | int i; |
| 765 | |
| 766 | /* String containing only one number. */ |
| 767 | numbers_simple(); |
| 768 | |
| 769 | /* String with multiple numbers separated by delimiter. */ |
| 770 | for (i = 0; i < ARRAY_SIZE(number_delimiters); i++) { |
| 771 | numbers_list(number_delimiters[i]); |
| 772 | |
| 773 | /* Field width may be longer than actual field digits. */ |
| 774 | numbers_list_field_width_typemax(number_delimiters[i]); |
| 775 | |
| 776 | /* Each field width exactly length of actual field digits. */ |
| 777 | numbers_list_field_width_val_width(number_delimiters[i]); |
| 778 | } |
| 779 | |
| 780 | /* Slice continuous sequence of digits using field widths. */ |
| 781 | numbers_slice(); |
| 782 | |
| 783 | numbers_prefix_overflow(); |
| 784 | } |
| 785 | |
| 786 | static void __init selftest(void) |
| 787 | { |
| 788 | test_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); |
| 789 | if (!test_buffer) |
| 790 | return; |
| 791 | |
| 792 | fmt_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); |
| 793 | if (!fmt_buffer) { |
| 794 | kfree(test_buffer); |
| 795 | return; |
| 796 | } |
| 797 | |
| 798 | prandom_seed_state(&rnd_state, 3141592653589793238ULL); |
| 799 | |
| 800 | test_numbers(); |
| 801 | |
| 802 | test_simple_strtoull(); |
| 803 | test_simple_strtoll(); |
| 804 | test_simple_strtoul(); |
| 805 | test_simple_strtol(); |
| 806 | |
| 807 | kfree(fmt_buffer); |
| 808 | kfree(test_buffer); |
| 809 | } |
| 810 | |
| 811 | KSTM_MODULE_LOADERS(test_scanf); |
| 812 | MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>"); |
| 813 | MODULE_LICENSE("GPL v2"); |