lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1991,1993,1995-1997,2000 |
| 2 | Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Library General Public License as |
| 7 | published by the Free Software Foundation; either version 2 of the |
| 8 | License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Library General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Library General Public |
| 16 | License along with the GNU C Library; see the file COPYING.LIB. If not, |
| 17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 18 | Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | #define _XOPEN_SOURCE 500 |
| 21 | #include <features.h> |
| 22 | #include <errno.h> |
| 23 | #include <limits.h> |
| 24 | #include <grp.h> |
| 25 | #include <pwd.h> |
| 26 | #include <stddef.h> |
| 27 | #include <stdio.h> |
| 28 | #include <stdlib.h> |
| 29 | #include <time.h> |
| 30 | #include <unistd.h> |
| 31 | #include <sys/syscall.h> |
| 32 | #include <sys/sysinfo.h> |
| 33 | #include <sys/types.h> |
| 34 | #include <sys/param.h> |
| 35 | #ifdef __UCLIBC_HAS_REGEX__ |
| 36 | #include <regex.h> |
| 37 | #endif |
| 38 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 39 | #include <sysdep.h> |
| 40 | #endif |
| 41 | #include <sys/resource.h> |
| 42 | #include <string.h> |
| 43 | #include <dirent.h> |
| 44 | #include "internal/parse_config.h" |
| 45 | |
| 46 | static int nprocessors_onln(void) |
| 47 | { |
| 48 | char **l = NULL; |
| 49 | parser_t *p = config_open("/proc/stat"); |
| 50 | int ret = 0; |
| 51 | |
| 52 | if (p) { |
| 53 | while (config_read(p, &l, 2, 1, " ", 0)) |
| 54 | if (l[0][0] == 'c' |
| 55 | && l[0][1] == 'p' |
| 56 | && l[0][2] == 'u' |
| 57 | && isdigit(l[0][3])) |
| 58 | ++ret; |
| 59 | } else if ((p = config_open("/proc/cpuinfo"))) { |
| 60 | #if defined __sparc__ |
| 61 | while (config_read(p, &l, 2, 2, "\0:", PARSE_NORMAL)) |
| 62 | if (strncmp("ncpus active", l[0], 12) == 0) { |
| 63 | ret = atoi(l[1]); |
| 64 | break; |
| 65 | } |
| 66 | #else |
| 67 | while (config_read(p, &l, 2, 2, "\0:\t", PARSE_NORMAL)) |
| 68 | if (strcmp("processor", l[0]) == 0) |
| 69 | ++ret; |
| 70 | #endif |
| 71 | } |
| 72 | config_close(p); |
| 73 | return ret != 0 ? ret : 1; |
| 74 | } |
| 75 | |
| 76 | #if defined __UCLIBC__ && !defined __UCLIBC_HAS_LFS__ |
| 77 | # define readdir64 readdir |
| 78 | # define dirent64 dirent |
| 79 | #endif |
| 80 | static int nprocessors_conf(void) |
| 81 | { |
| 82 | int ret = 0; |
| 83 | DIR *dir = opendir("/sys/devices/system/cpu"); |
| 84 | |
| 85 | if (dir) { |
| 86 | struct dirent64 *dp; |
| 87 | |
| 88 | while ((dp = readdir64(dir))) { |
| 89 | if (dp->d_type == DT_DIR |
| 90 | && dp->d_name[0] == 'c' |
| 91 | && dp->d_name[1] == 'p' |
| 92 | && dp->d_name[2] == 'u' |
| 93 | && isdigit(dp->d_name[3])) |
| 94 | ++ret; |
| 95 | } |
| 96 | closedir(dir); |
| 97 | } else |
| 98 | { |
| 99 | #if defined __sparc__ |
| 100 | char **l = NULL; |
| 101 | parser_t *p = config_open("/proc/stat"); |
| 102 | while (config_read(p, &l, 2, 2, "\0:", PARSE_NORMAL)) |
| 103 | if (strncmp("ncpus probed", l[0], 13) == 0) { |
| 104 | ret = atoi(l[1]); |
| 105 | break; |
| 106 | } |
| 107 | config_close(p); |
| 108 | #else |
| 109 | ret = nprocessors_onln(); |
| 110 | #endif |
| 111 | } |
| 112 | return ret != 0 ? ret : 1; |
| 113 | } |
| 114 | |
| 115 | |
| 116 | #ifndef __UCLIBC_CLK_TCK_CONST |
| 117 | #error __UCLIBC_CLK_TCK_CONST not defined! |
| 118 | #endif |
| 119 | |
| 120 | /***********************************************************************/ |
| 121 | /* |
| 122 | * Manuel Novoa III Jan 2001 |
| 123 | * |
| 124 | * On i386, the switch-based implementation generates 796 bytes of code. |
| 125 | * However, many of the return values are repeats. By collecting these |
| 126 | * repeats and moving to a table-based implementation, we generate 283 |
| 127 | * bytes on i386 (-Os -fomit-frame-pointer). |
| 128 | */ |
| 129 | |
| 130 | #ifdef _UCLIBC_GENERATE_SYSCONF_ARCH |
| 131 | /* |
| 132 | * Set some errno's so the auto-gen code knows what it is dealing with. |
| 133 | * 1) ENOSYS signifies that we're returning a default value. |
| 134 | * This is just extra info for development. |
| 135 | * 2) EISNAM signifies that the value returned varies at runtime. |
| 136 | * |
| 137 | * Option: GETPAGESIZE_IS_DYNAMIC |
| 138 | * The current implementation of getpagesize in uClibc returns |
| 139 | * a constant. The pagesize on the target arch should not vary, |
| 140 | * so it should be safe to set this as 0. |
| 141 | */ |
| 142 | #define RETURN_NEG_1 __set_errno(ENOSYS); return -1 |
| 143 | #define RETURN_FUNCTION(f) __set_errno(EISNAM); return (long int) #f |
| 144 | #define GETPAGESIZE_IS_DYNAMIC 0 |
| 145 | #else |
| 146 | #define RETURN_NEG_1 return -1 |
| 147 | #define RETURN_FUNCTION(f) return f; |
| 148 | #endif /* _UCLIBC_GENERATE_SYSCONF_ARCH */ |
| 149 | |
| 150 | /* Legacy value of ARG_MAX. The macro is now not defined since the |
| 151 | actual value varies based on the stack size. */ |
| 152 | #define legacy_ARG_MAX 131072 |
| 153 | |
| 154 | /* Get the value of the system variable NAME. */ |
| 155 | long int sysconf(int name) |
| 156 | { |
| 157 | struct rlimit rlimit; |
| 158 | |
| 159 | switch (name) |
| 160 | { |
| 161 | default: |
| 162 | __set_errno(EINVAL); |
| 163 | return -1; |
| 164 | |
| 165 | case _SC_ARG_MAX: |
| 166 | /* Use getrlimit to get the stack limit. */ |
| 167 | if (getrlimit (RLIMIT_STACK, &rlimit) == 0) |
| 168 | return MAX (legacy_ARG_MAX, rlimit.rlim_cur / 4); |
| 169 | #if defined ARG_MAX |
| 170 | return ARG_MAX; |
| 171 | #else |
| 172 | return legacy_ARG_MAX; |
| 173 | #endif |
| 174 | |
| 175 | case _SC_CHILD_MAX: |
| 176 | #ifdef CHILD_MAX |
| 177 | return CHILD_MAX; |
| 178 | #else |
| 179 | RETURN_NEG_1; |
| 180 | #endif |
| 181 | |
| 182 | case _SC_CLK_TCK: |
| 183 | /* Can't use CLK_TCK here since that calls __sysconf(_SC_CLK_TCK) */ |
| 184 | return __UCLIBC_CLK_TCK_CONST; |
| 185 | |
| 186 | case _SC_NGROUPS_MAX: |
| 187 | #ifdef NGROUPS_MAX |
| 188 | return NGROUPS_MAX; |
| 189 | #else |
| 190 | RETURN_NEG_1; |
| 191 | #endif |
| 192 | |
| 193 | case _SC_OPEN_MAX: |
| 194 | RETURN_FUNCTION(getdtablesize()); |
| 195 | |
| 196 | case _SC_STREAM_MAX: |
| 197 | #ifdef STREAM_MAX |
| 198 | return STREAM_MAX; |
| 199 | #else |
| 200 | return FOPEN_MAX; |
| 201 | #endif |
| 202 | |
| 203 | case _SC_TZNAME_MAX: |
| 204 | return _POSIX_TZNAME_MAX; |
| 205 | |
| 206 | case _SC_JOB_CONTROL: |
| 207 | #ifdef _POSIX_JOB_CONTROL |
| 208 | return 1; |
| 209 | #else |
| 210 | RETURN_NEG_1; |
| 211 | #endif |
| 212 | |
| 213 | case _SC_SAVED_IDS: |
| 214 | #ifdef _POSIX_SAVED_IDS |
| 215 | return 1; |
| 216 | #else |
| 217 | RETURN_NEG_1; |
| 218 | #endif |
| 219 | |
| 220 | case _SC_REALTIME_SIGNALS: |
| 221 | #ifdef _POSIX_REALTIME_SIGNALS |
| 222 | return 1; |
| 223 | #else |
| 224 | RETURN_NEG_1; |
| 225 | #endif |
| 226 | |
| 227 | case _SC_PRIORITY_SCHEDULING: |
| 228 | #ifdef _POSIX_PRIORITY_SCHEDULING |
| 229 | return 1; |
| 230 | #else |
| 231 | RETURN_NEG_1; |
| 232 | #endif |
| 233 | |
| 234 | case _SC_TIMERS: |
| 235 | #ifdef _POSIX_TIMERS |
| 236 | return 1; |
| 237 | #else |
| 238 | RETURN_NEG_1; |
| 239 | #endif |
| 240 | |
| 241 | case _SC_ASYNCHRONOUS_IO: |
| 242 | #ifdef _POSIX_ASYNCHRONOUS_IO |
| 243 | return 1; |
| 244 | #else |
| 245 | RETURN_NEG_1; |
| 246 | #endif |
| 247 | |
| 248 | case _SC_PRIORITIZED_IO: |
| 249 | #ifdef _POSIX_PRIORITIZED_IO |
| 250 | return 1; |
| 251 | #else |
| 252 | RETURN_NEG_1; |
| 253 | #endif |
| 254 | |
| 255 | case _SC_SYNCHRONIZED_IO: |
| 256 | #ifdef _POSIX_SYNCHRONIZED_IO |
| 257 | return 1; |
| 258 | #else |
| 259 | RETURN_NEG_1; |
| 260 | #endif |
| 261 | |
| 262 | case _SC_FSYNC: |
| 263 | #ifdef _POSIX_FSYNC |
| 264 | return 1; |
| 265 | #else |
| 266 | RETURN_NEG_1; |
| 267 | #endif |
| 268 | |
| 269 | case _SC_MAPPED_FILES: |
| 270 | #ifdef _POSIX_MAPPED_FILES |
| 271 | return 1; |
| 272 | #else |
| 273 | RETURN_NEG_1; |
| 274 | #endif |
| 275 | |
| 276 | case _SC_MEMLOCK: |
| 277 | #ifdef _POSIX_MEMLOCK |
| 278 | return 1; |
| 279 | #else |
| 280 | RETURN_NEG_1; |
| 281 | #endif |
| 282 | |
| 283 | case _SC_MEMLOCK_RANGE: |
| 284 | #ifdef _POSIX_MEMLOCK_RANGE |
| 285 | return 1; |
| 286 | #else |
| 287 | RETURN_NEG_1; |
| 288 | #endif |
| 289 | |
| 290 | case _SC_MEMORY_PROTECTION: |
| 291 | #ifdef _POSIX_MEMORY_PROTECTION |
| 292 | return 1; |
| 293 | #else |
| 294 | RETURN_NEG_1; |
| 295 | #endif |
| 296 | |
| 297 | case _SC_MESSAGE_PASSING: |
| 298 | #ifdef _POSIX_MESSAGE_PASSING |
| 299 | return 1; |
| 300 | #else |
| 301 | RETURN_NEG_1; |
| 302 | #endif |
| 303 | |
| 304 | case _SC_SEMAPHORES: |
| 305 | #ifdef _POSIX_SEMAPHORES |
| 306 | return 1; |
| 307 | #else |
| 308 | RETURN_NEG_1; |
| 309 | #endif |
| 310 | |
| 311 | case _SC_SHARED_MEMORY_OBJECTS: |
| 312 | #ifdef _POSIX_SHARED_MEMORY_OBJECTS |
| 313 | return 1; |
| 314 | #else |
| 315 | RETURN_NEG_1; |
| 316 | #endif |
| 317 | |
| 318 | case _SC_VERSION: |
| 319 | return _POSIX_VERSION; |
| 320 | |
| 321 | case _SC_PAGESIZE: |
| 322 | #if defined(GETPAGESIZE_IS_DYNAMIC) && (GETPAGESIZE_IS_DYNAMIC == 1) |
| 323 | RETURN_FUNCTION(getpagesize()); |
| 324 | #else |
| 325 | return getpagesize(); /* note: currently this is not dynamic */ |
| 326 | #endif |
| 327 | |
| 328 | case _SC_AIO_LISTIO_MAX: |
| 329 | #ifdef AIO_LISTIO_MAX |
| 330 | return AIO_LISTIO_MAX; |
| 331 | #else |
| 332 | RETURN_NEG_1; |
| 333 | #endif |
| 334 | |
| 335 | case _SC_AIO_MAX: |
| 336 | #ifdef AIO_MAX |
| 337 | return AIO_MAX; |
| 338 | #else |
| 339 | RETURN_NEG_1; |
| 340 | #endif |
| 341 | |
| 342 | case _SC_AIO_PRIO_DELTA_MAX: |
| 343 | #ifdef AIO_PRIO_DELTA_MAX |
| 344 | return AIO_PRIO_DELTA_MAX; |
| 345 | #else |
| 346 | RETURN_NEG_1; |
| 347 | #endif |
| 348 | |
| 349 | case _SC_DELAYTIMER_MAX: |
| 350 | #ifdef DELAYTIMER_MAX |
| 351 | return DELAYTIMER_MAX; |
| 352 | #else |
| 353 | RETURN_NEG_1; |
| 354 | #endif |
| 355 | |
| 356 | case _SC_MQ_OPEN_MAX: |
| 357 | #ifdef MQ_OPEN_MAX |
| 358 | return MQ_OPEN_MAX; |
| 359 | #else |
| 360 | RETURN_NEG_1; |
| 361 | #endif |
| 362 | |
| 363 | case _SC_MQ_PRIO_MAX: |
| 364 | #ifdef MQ_PRIO_MAX |
| 365 | return MQ_PRIO_MAX; |
| 366 | #else |
| 367 | RETURN_NEG_1; |
| 368 | #endif |
| 369 | |
| 370 | case _SC_RTSIG_MAX: |
| 371 | #ifdef RTSIG_MAX |
| 372 | return RTSIG_MAX; |
| 373 | #else |
| 374 | RETURN_NEG_1; |
| 375 | #endif |
| 376 | |
| 377 | case _SC_SEM_NSEMS_MAX: |
| 378 | #ifdef SEM_NSEMS_MAX |
| 379 | return SEM_NSEMS_MAX; |
| 380 | #else |
| 381 | RETURN_NEG_1; |
| 382 | #endif |
| 383 | |
| 384 | case _SC_SEM_VALUE_MAX: |
| 385 | #ifdef SEM_VALUE_MAX |
| 386 | return SEM_VALUE_MAX; |
| 387 | #else |
| 388 | RETURN_NEG_1; |
| 389 | #endif |
| 390 | |
| 391 | case _SC_SIGQUEUE_MAX: |
| 392 | #ifdef SIGQUEUE_MAX |
| 393 | return SIGQUEUE_MAX; |
| 394 | #else |
| 395 | RETURN_NEG_1; |
| 396 | #endif |
| 397 | |
| 398 | case _SC_TIMER_MAX: |
| 399 | #ifdef TIMER_MAX |
| 400 | return TIMER_MAX; |
| 401 | #else |
| 402 | RETURN_NEG_1; |
| 403 | #endif |
| 404 | |
| 405 | case _SC_BC_BASE_MAX: |
| 406 | #ifdef BC_BASE_MAX |
| 407 | return BC_BASE_MAX; |
| 408 | #else |
| 409 | RETURN_NEG_1; |
| 410 | #endif |
| 411 | |
| 412 | case _SC_BC_DIM_MAX: |
| 413 | #ifdef BC_DIM_MAX |
| 414 | return BC_DIM_MAX; |
| 415 | #else |
| 416 | RETURN_NEG_1; |
| 417 | #endif |
| 418 | |
| 419 | case _SC_BC_SCALE_MAX: |
| 420 | #ifdef BC_SCALE_MAX |
| 421 | return BC_SCALE_MAX; |
| 422 | #else |
| 423 | RETURN_NEG_1; |
| 424 | #endif |
| 425 | |
| 426 | case _SC_BC_STRING_MAX: |
| 427 | #ifdef BC_STRING_MAX |
| 428 | return BC_STRING_MAX; |
| 429 | #else |
| 430 | RETURN_NEG_1; |
| 431 | #endif |
| 432 | |
| 433 | case _SC_COLL_WEIGHTS_MAX: |
| 434 | #ifdef COLL_WEIGHTS_MAX |
| 435 | return COLL_WEIGHTS_MAX; |
| 436 | #else |
| 437 | RETURN_NEG_1; |
| 438 | #endif |
| 439 | |
| 440 | case _SC_EQUIV_CLASS_MAX: |
| 441 | #ifdef EQUIV_CLASS_MAX |
| 442 | return EQUIV_CLASS_MAX; |
| 443 | #else |
| 444 | RETURN_NEG_1; |
| 445 | #endif |
| 446 | |
| 447 | case _SC_EXPR_NEST_MAX: |
| 448 | #ifdef EXPR_NEST_MAX |
| 449 | return EXPR_NEST_MAX; |
| 450 | #else |
| 451 | RETURN_NEG_1; |
| 452 | #endif |
| 453 | |
| 454 | case _SC_LINE_MAX: |
| 455 | #ifdef LINE_MAX |
| 456 | return LINE_MAX; |
| 457 | #else |
| 458 | RETURN_NEG_1; |
| 459 | #endif |
| 460 | |
| 461 | case _SC_RE_DUP_MAX: |
| 462 | #ifdef RE_DUP_MAX |
| 463 | return RE_DUP_MAX; |
| 464 | #else |
| 465 | RETURN_NEG_1; |
| 466 | #endif |
| 467 | |
| 468 | case _SC_CHARCLASS_NAME_MAX: |
| 469 | #ifdef CHARCLASS_NAME_MAX |
| 470 | return CHARCLASS_NAME_MAX; |
| 471 | #else |
| 472 | RETURN_NEG_1; |
| 473 | #endif |
| 474 | |
| 475 | case _SC_PII: |
| 476 | #ifdef _POSIX_PII |
| 477 | return 1; |
| 478 | #else |
| 479 | RETURN_NEG_1; |
| 480 | #endif |
| 481 | |
| 482 | case _SC_PII_XTI: |
| 483 | #ifdef _POSIX_PII_XTI |
| 484 | return 1; |
| 485 | #else |
| 486 | RETURN_NEG_1; |
| 487 | #endif |
| 488 | |
| 489 | case _SC_PII_SOCKET: |
| 490 | #ifdef _POSIX_PII_SOCKET |
| 491 | return 1; |
| 492 | #else |
| 493 | RETURN_NEG_1; |
| 494 | #endif |
| 495 | |
| 496 | case _SC_PII_INTERNET: |
| 497 | #ifdef _POSIX_PII_INTERNET |
| 498 | return 1; |
| 499 | #else |
| 500 | RETURN_NEG_1; |
| 501 | #endif |
| 502 | |
| 503 | case _SC_PII_OSI: |
| 504 | #ifdef _POSIX_PII_OSI |
| 505 | return 1; |
| 506 | #else |
| 507 | RETURN_NEG_1; |
| 508 | #endif |
| 509 | |
| 510 | case _SC_POLL: |
| 511 | #ifdef _POSIX_POLL |
| 512 | return 1; |
| 513 | #else |
| 514 | RETURN_NEG_1; |
| 515 | #endif |
| 516 | |
| 517 | case _SC_SELECT: |
| 518 | #ifdef _POSIX_SELECT |
| 519 | return 1; |
| 520 | #else |
| 521 | RETURN_NEG_1; |
| 522 | #endif |
| 523 | |
| 524 | case _SC_UIO_MAXIOV: |
| 525 | #ifdef UIO_MAXIOV |
| 526 | return UIO_MAXIOV; |
| 527 | #else |
| 528 | RETURN_NEG_1; |
| 529 | #endif |
| 530 | |
| 531 | case _SC_PII_INTERNET_STREAM: |
| 532 | #ifdef _POSIX_PII_INTERNET_STREAM |
| 533 | return 1; |
| 534 | #else |
| 535 | RETURN_NEG_1; |
| 536 | #endif |
| 537 | |
| 538 | case _SC_PII_INTERNET_DGRAM: |
| 539 | #ifdef _POSIX_PII_INTERNET_DGRAM |
| 540 | return 1; |
| 541 | #else |
| 542 | RETURN_NEG_1; |
| 543 | #endif |
| 544 | |
| 545 | case _SC_PII_OSI_COTS: |
| 546 | #ifdef _POSIX_PII_OSI_COTS |
| 547 | return 1; |
| 548 | #else |
| 549 | RETURN_NEG_1; |
| 550 | #endif |
| 551 | |
| 552 | case _SC_PII_OSI_CLTS: |
| 553 | #ifdef _POSIX_PII_OSI_CLTS |
| 554 | return 1; |
| 555 | #else |
| 556 | RETURN_NEG_1; |
| 557 | #endif |
| 558 | |
| 559 | case _SC_PII_OSI_M: |
| 560 | #ifdef _POSIX_PII_OSI_M |
| 561 | return 1; |
| 562 | #else |
| 563 | RETURN_NEG_1; |
| 564 | #endif |
| 565 | |
| 566 | case _SC_T_IOV_MAX: |
| 567 | #ifdef _T_IOV_MAX |
| 568 | return _T_IOV_MAX; |
| 569 | #else |
| 570 | RETURN_NEG_1; |
| 571 | #endif |
| 572 | |
| 573 | case _SC_2_VERSION: |
| 574 | return _POSIX2_VERSION; |
| 575 | |
| 576 | case _SC_2_C_BIND: |
| 577 | #ifdef _POSIX2_C_BIND |
| 578 | return _POSIX2_C_BIND; |
| 579 | #else |
| 580 | RETURN_NEG_1; |
| 581 | #endif |
| 582 | |
| 583 | case _SC_2_C_DEV: |
| 584 | #ifdef _POSIX2_C_DEV |
| 585 | return _POSIX2_C_DEV; |
| 586 | #else |
| 587 | RETURN_NEG_1; |
| 588 | #endif |
| 589 | |
| 590 | case _SC_2_C_VERSION: |
| 591 | #ifdef _POSIX2_C_VERSION |
| 592 | return _POSIX2_C_VERSION; |
| 593 | #else |
| 594 | RETURN_NEG_1; |
| 595 | #endif |
| 596 | |
| 597 | case _SC_2_FORT_DEV: |
| 598 | #ifdef _POSIX2_FORT_DEV |
| 599 | return _POSIX2_FORT_DEV; |
| 600 | #else |
| 601 | RETURN_NEG_1; |
| 602 | #endif |
| 603 | |
| 604 | case _SC_2_FORT_RUN: |
| 605 | #ifdef _POSIX2_FORT_RUN |
| 606 | return _POSIX2_FORT_RUN; |
| 607 | #else |
| 608 | RETURN_NEG_1; |
| 609 | #endif |
| 610 | |
| 611 | case _SC_2_LOCALEDEF: |
| 612 | #ifdef _POSIX2_LOCALEDEF |
| 613 | return _POSIX2_LOCALEDEF; |
| 614 | #else |
| 615 | RETURN_NEG_1; |
| 616 | #endif |
| 617 | |
| 618 | case _SC_2_SW_DEV: |
| 619 | #ifdef _POSIX2_SW_DEV |
| 620 | return _POSIX2_SW_DEV; |
| 621 | #else |
| 622 | RETURN_NEG_1; |
| 623 | #endif |
| 624 | |
| 625 | case _SC_2_CHAR_TERM: |
| 626 | #ifdef _POSIX2_CHAR_TERM |
| 627 | return _POSIX2_CHAR_TERM; |
| 628 | #else |
| 629 | RETURN_NEG_1; |
| 630 | #endif |
| 631 | |
| 632 | case _SC_2_UPE: |
| 633 | #ifdef _POSIX2_UPE |
| 634 | return _POSIX2_UPE; |
| 635 | #else |
| 636 | RETURN_NEG_1; |
| 637 | #endif |
| 638 | |
| 639 | /* POSIX 1003.1c (POSIX Threads). */ |
| 640 | case _SC_THREADS: |
| 641 | #ifdef __UCLIBC_HAS_THREADS__ |
| 642 | return 1; |
| 643 | #else |
| 644 | RETURN_NEG_1; |
| 645 | #endif |
| 646 | |
| 647 | case _SC_THREAD_SAFE_FUNCTIONS: |
| 648 | #ifdef __UCLIBC_HAS_THREADS__ |
| 649 | return 1; |
| 650 | #else |
| 651 | RETURN_NEG_1; |
| 652 | #endif |
| 653 | |
| 654 | /* If you change these, also change libc/pwd_grp/pwd_grp.c to match */ |
| 655 | case _SC_GETGR_R_SIZE_MAX: |
| 656 | return __UCLIBC_GRP_BUFFER_SIZE__; |
| 657 | |
| 658 | case _SC_GETPW_R_SIZE_MAX: |
| 659 | return __UCLIBC_PWD_BUFFER_SIZE__; |
| 660 | |
| 661 | /* getlogin() is a worthless interface. In uClibc we let the user specify |
| 662 | * whatever they want via the LOGNAME environment variable, or we return NULL |
| 663 | * if getenv() fails to find anything. So this is merely how large a env |
| 664 | * variable can be. Lets use 256 */ |
| 665 | case _SC_LOGIN_NAME_MAX: |
| 666 | return 256; |
| 667 | |
| 668 | /* If you change this, also change _SC_TTY_NAME_MAX in libc/unistd/sysconf.c */ |
| 669 | #define TTYNAME_BUFLEN 32 |
| 670 | case _SC_TTY_NAME_MAX: |
| 671 | return TTYNAME_BUFLEN; |
| 672 | |
| 673 | case _SC_THREAD_DESTRUCTOR_ITERATIONS: |
| 674 | #ifdef _POSIX_THREAD_DESTRUCTOR_ITERATIONS |
| 675 | return _POSIX_THREAD_DESTRUCTOR_ITERATIONS; |
| 676 | #else |
| 677 | RETURN_NEG_1; |
| 678 | #endif |
| 679 | |
| 680 | case _SC_THREAD_KEYS_MAX: |
| 681 | #ifdef PTHREAD_KEYS_MAX |
| 682 | return PTHREAD_KEYS_MAX; |
| 683 | #else |
| 684 | RETURN_NEG_1; |
| 685 | #endif |
| 686 | |
| 687 | case _SC_THREAD_STACK_MIN: |
| 688 | #ifdef PTHREAD_STACK_MIN |
| 689 | return PTHREAD_STACK_MIN; |
| 690 | #else |
| 691 | RETURN_NEG_1; |
| 692 | #endif |
| 693 | |
| 694 | case _SC_THREAD_THREADS_MAX: |
| 695 | #ifdef PTHREAD_THREADS_MAX |
| 696 | return PTHREAD_THREADS_MAX; |
| 697 | #else |
| 698 | RETURN_NEG_1; |
| 699 | #endif |
| 700 | |
| 701 | case _SC_THREAD_ATTR_STACKADDR: |
| 702 | #ifdef _POSIX_THREAD_ATTR_STACKADDR |
| 703 | return 1; |
| 704 | #else |
| 705 | RETURN_NEG_1; |
| 706 | #endif |
| 707 | |
| 708 | case _SC_THREAD_ATTR_STACKSIZE: |
| 709 | #ifdef _POSIX_THREAD_ATTR_STACKSIZE |
| 710 | return 1; |
| 711 | #else |
| 712 | RETURN_NEG_1; |
| 713 | #endif |
| 714 | |
| 715 | case _SC_THREAD_PRIORITY_SCHEDULING: |
| 716 | #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING |
| 717 | return 1; |
| 718 | #else |
| 719 | RETURN_NEG_1; |
| 720 | #endif |
| 721 | |
| 722 | case _SC_THREAD_PRIO_INHERIT: |
| 723 | #ifdef _POSIX_THREAD_PRIO_INHERIT |
| 724 | return 1; |
| 725 | #else |
| 726 | RETURN_NEG_1; |
| 727 | #endif |
| 728 | |
| 729 | case _SC_THREAD_PRIO_PROTECT: |
| 730 | #ifdef _POSIX_THREAD_PRIO_PROTECT |
| 731 | return 1; |
| 732 | #else |
| 733 | RETURN_NEG_1; |
| 734 | #endif |
| 735 | |
| 736 | case _SC_THREAD_PROCESS_SHARED: |
| 737 | #ifdef _POSIX_THREAD_PROCESS_SHARED |
| 738 | return 1; |
| 739 | #else |
| 740 | RETURN_NEG_1; |
| 741 | #endif |
| 742 | |
| 743 | case _SC_NPROCESSORS_CONF: |
| 744 | RETURN_FUNCTION(nprocessors_conf()); |
| 745 | |
| 746 | case _SC_NPROCESSORS_ONLN: |
| 747 | RETURN_FUNCTION(nprocessors_onln()); |
| 748 | |
| 749 | case _SC_PHYS_PAGES: |
| 750 | #if 0 |
| 751 | RETURN_FUNCTION(get_phys_pages()); |
| 752 | #else |
| 753 | RETURN_NEG_1; |
| 754 | #endif |
| 755 | |
| 756 | case _SC_AVPHYS_PAGES: |
| 757 | #if 0 |
| 758 | RETURN_FUNCTION(get_avphys_pages()); |
| 759 | #else |
| 760 | RETURN_NEG_1; |
| 761 | #endif |
| 762 | |
| 763 | case _SC_ATEXIT_MAX: |
| 764 | return __UCLIBC_MAX_ATEXIT; |
| 765 | |
| 766 | case _SC_PASS_MAX: |
| 767 | /* We have no limit but since the return value might be used to |
| 768 | allocate a buffer we restrict the value. */ |
| 769 | return BUFSIZ; |
| 770 | |
| 771 | case _SC_XOPEN_VERSION: |
| 772 | return _XOPEN_VERSION; |
| 773 | |
| 774 | case _SC_XOPEN_XCU_VERSION: |
| 775 | return _XOPEN_XCU_VERSION; |
| 776 | |
| 777 | case _SC_XOPEN_UNIX: |
| 778 | return _XOPEN_UNIX; |
| 779 | |
| 780 | case _SC_XOPEN_CRYPT: |
| 781 | #ifdef _XOPEN_CRYPT |
| 782 | return _XOPEN_CRYPT; |
| 783 | #else |
| 784 | RETURN_NEG_1; |
| 785 | #endif |
| 786 | |
| 787 | case _SC_XOPEN_ENH_I18N: |
| 788 | #ifdef _XOPEN_ENH_I18N |
| 789 | return _XOPEN_ENH_I18N; |
| 790 | #else |
| 791 | RETURN_NEG_1; |
| 792 | #endif |
| 793 | |
| 794 | case _SC_XOPEN_SHM: |
| 795 | #ifdef _XOPEN_SHM |
| 796 | return _XOPEN_SHM; |
| 797 | #else |
| 798 | RETURN_NEG_1; |
| 799 | #endif |
| 800 | |
| 801 | case _SC_XOPEN_XPG2: |
| 802 | #ifdef _XOPEN_XPG2 |
| 803 | return _XOPEN_XPG2; |
| 804 | #else |
| 805 | RETURN_NEG_1; |
| 806 | #endif |
| 807 | |
| 808 | case _SC_XOPEN_XPG3: |
| 809 | #ifdef _XOPEN_XPG3 |
| 810 | return _XOPEN_XPG3; |
| 811 | #else |
| 812 | RETURN_NEG_1; |
| 813 | #endif |
| 814 | |
| 815 | case _SC_XOPEN_XPG4: |
| 816 | #ifdef _XOPEN_XPG4 |
| 817 | return _XOPEN_XPG4; |
| 818 | #else |
| 819 | RETURN_NEG_1; |
| 820 | #endif |
| 821 | |
| 822 | case _SC_CHAR_BIT: |
| 823 | return CHAR_BIT; |
| 824 | |
| 825 | case _SC_CHAR_MAX: |
| 826 | return CHAR_MAX; |
| 827 | |
| 828 | case _SC_CHAR_MIN: |
| 829 | return CHAR_MIN; |
| 830 | |
| 831 | case _SC_INT_MAX: |
| 832 | return INT_MAX; |
| 833 | |
| 834 | case _SC_INT_MIN: |
| 835 | return INT_MIN; |
| 836 | |
| 837 | case _SC_LONG_BIT: |
| 838 | return sizeof (long int) * CHAR_BIT; |
| 839 | |
| 840 | case _SC_WORD_BIT: |
| 841 | return sizeof (int) * CHAR_BIT; |
| 842 | |
| 843 | case _SC_MB_LEN_MAX: |
| 844 | return MB_LEN_MAX; |
| 845 | |
| 846 | case _SC_NZERO: |
| 847 | return NZERO; |
| 848 | |
| 849 | case _SC_SSIZE_MAX: |
| 850 | return _POSIX_SSIZE_MAX; |
| 851 | |
| 852 | case _SC_SCHAR_MAX: |
| 853 | return SCHAR_MAX; |
| 854 | |
| 855 | case _SC_SCHAR_MIN: |
| 856 | return SCHAR_MIN; |
| 857 | |
| 858 | case _SC_SHRT_MAX: |
| 859 | return SHRT_MAX; |
| 860 | |
| 861 | case _SC_SHRT_MIN: |
| 862 | return SHRT_MIN; |
| 863 | |
| 864 | case _SC_UCHAR_MAX: |
| 865 | return UCHAR_MAX; |
| 866 | |
| 867 | case _SC_UINT_MAX: |
| 868 | return UINT_MAX; |
| 869 | |
| 870 | case _SC_ULONG_MAX: |
| 871 | return ULONG_MAX; |
| 872 | |
| 873 | case _SC_USHRT_MAX: |
| 874 | return USHRT_MAX; |
| 875 | |
| 876 | case _SC_NL_ARGMAX: |
| 877 | #ifdef NL_ARGMAX |
| 878 | return NL_ARGMAX; |
| 879 | #else |
| 880 | RETURN_NEG_1; |
| 881 | #endif |
| 882 | |
| 883 | case _SC_NL_LANGMAX: |
| 884 | #ifdef NL_LANGMAX |
| 885 | return NL_LANGMAX; |
| 886 | #else |
| 887 | RETURN_NEG_1; |
| 888 | #endif |
| 889 | |
| 890 | case _SC_NL_MSGMAX: |
| 891 | #ifdef NL_MSGMAX |
| 892 | return NL_MSGMAX; |
| 893 | #else |
| 894 | RETURN_NEG_1; |
| 895 | #endif |
| 896 | |
| 897 | case _SC_NL_NMAX: |
| 898 | #ifdef NL_NMAX |
| 899 | return NL_NMAX; |
| 900 | #else |
| 901 | RETURN_NEG_1; |
| 902 | #endif |
| 903 | |
| 904 | case _SC_NL_SETMAX: |
| 905 | #ifdef NL_SETMAX |
| 906 | return NL_SETMAX; |
| 907 | #else |
| 908 | RETURN_NEG_1; |
| 909 | #endif |
| 910 | |
| 911 | case _SC_NL_TEXTMAX: |
| 912 | #ifdef NL_TEXTMAX |
| 913 | return NL_TEXTMAX; |
| 914 | #else |
| 915 | RETURN_NEG_1; |
| 916 | #endif |
| 917 | |
| 918 | case _SC_XBS5_ILP32_OFF32: |
| 919 | #ifdef _XBS5_ILP32_OFF32 |
| 920 | return _XBS5_ILP32_OFF32; |
| 921 | #else |
| 922 | RETURN_NEG_1; |
| 923 | #endif |
| 924 | case _SC_XBS5_ILP32_OFFBIG: |
| 925 | #ifdef _XBS5_ILP32_OFFBIG |
| 926 | return _XBS5_ILP32_OFFBIG; |
| 927 | #else |
| 928 | RETURN_NEG_1; |
| 929 | #endif |
| 930 | case _SC_XBS5_LP64_OFF64: |
| 931 | #ifdef _XBS5_LP64_OFF64 |
| 932 | return _XBS5_LP64_OFF64; |
| 933 | #else |
| 934 | RETURN_NEG_1; |
| 935 | #endif |
| 936 | case _SC_XBS5_LPBIG_OFFBIG: |
| 937 | #ifdef _XBS5_LPBIG_OFFBIG |
| 938 | return _XBS5_LPBIG_OFFBIG; |
| 939 | #else |
| 940 | RETURN_NEG_1; |
| 941 | #endif |
| 942 | case _SC_V7_ILP32_OFF32: |
| 943 | #ifdef _POSIX_V7_ILP32_OFF32 |
| 944 | return _POSIX_V7_ILP32_OFF32; |
| 945 | #else |
| 946 | RETURN_NEG_1; |
| 947 | #endif |
| 948 | case _SC_V7_ILP32_OFFBIG: |
| 949 | #ifdef _POSIX_V7_ILP32_OFFBIG |
| 950 | return _POSIX_V7_ILP32_OFFBIG; |
| 951 | #else |
| 952 | RETURN_NEG_1; |
| 953 | #endif |
| 954 | case _SC_V7_LP64_OFF64: |
| 955 | #ifdef _POSIX_V7_LP64_OFF64 |
| 956 | return _POSIX_V7_LP64_OFF64; |
| 957 | #else |
| 958 | RETURN_NEG_1; |
| 959 | #endif |
| 960 | case _SC_V7_LPBIG_OFFBIG: |
| 961 | #ifdef _POSIX_V7_LPBIG_OFFBIG |
| 962 | return _POSIX_V7_LPBIG_OFFBIG; |
| 963 | #else |
| 964 | RETURN_NEG_1; |
| 965 | #endif |
| 966 | |
| 967 | case _SC_XOPEN_LEGACY: |
| 968 | return _XOPEN_LEGACY; |
| 969 | |
| 970 | case _SC_XOPEN_REALTIME: |
| 971 | #ifdef _XOPEN_REALTIME |
| 972 | return _XOPEN_REALTIME; |
| 973 | #else |
| 974 | RETURN_NEG_1; |
| 975 | #endif |
| 976 | case _SC_XOPEN_REALTIME_THREADS: |
| 977 | #ifdef _XOPEN_REALTIME_THREADS |
| 978 | return _XOPEN_REALTIME_THREADS; |
| 979 | #else |
| 980 | RETURN_NEG_1; |
| 981 | #endif |
| 982 | |
| 983 | case _SC_MONOTONIC_CLOCK: |
| 984 | #ifdef __NR_clock_getres |
| 985 | /* Check using the clock_getres system call. */ |
| 986 | # ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 987 | { |
| 988 | struct timespec ts; |
| 989 | INTERNAL_SYSCALL_DECL (err); |
| 990 | int r; |
| 991 | r = INTERNAL_SYSCALL (clock_getres, err, 2, CLOCK_MONOTONIC, &ts); |
| 992 | return INTERNAL_SYSCALL_ERROR_P (r, err) ? -1 : _POSIX_VERSION; |
| 993 | } |
| 994 | # elif defined __UCLIBC_HAS_REALTIME__ |
| 995 | if (clock_getres(CLOCK_MONOTONIC, NULL) >= 0) |
| 996 | return _POSIX_VERSION; |
| 997 | # endif |
| 998 | #endif |
| 999 | RETURN_NEG_1; |
| 1000 | |
| 1001 | #ifdef __UCLIBC_HAS_THREADS_NATIVE__ |
| 1002 | case _SC_THREAD_CPUTIME: |
| 1003 | # if _POSIX_THREAD_CPUTIME > 0 |
| 1004 | return _POSIX_THREAD_CPUTIME; |
| 1005 | # else |
| 1006 | RETURN_NEG_1; |
| 1007 | # endif |
| 1008 | #endif |
| 1009 | } |
| 1010 | } |
| 1011 | libc_hidden_def(sysconf) |