| File: | src/lib/libc/gen/sysconf.c |
| Warning: | line 244, column 3 Value stored to 'namelen' is never read |
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| 1 | /* $OpenBSD: sysconf.c,v 1.28 2022/07/19 09:25:44 claudio Exp $ */ |
| 2 | /*- |
| 3 | * Copyright (c) 1993 |
| 4 | * The Regents of the University of California. All rights reserved. |
| 5 | * |
| 6 | * This code is derived from software contributed to Berkeley by |
| 7 | * Sean Eric Fagan of Cygnus Support. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | #include <sys/types.h> |
| 35 | #include <sys/sem.h> |
| 36 | #include <sys/sysctl.h> |
| 37 | #include <sys/time.h> |
| 38 | #include <sys/resource.h> |
| 39 | #include <sys/socket.h> |
| 40 | |
| 41 | #include <errno(*__errno()).h> |
| 42 | #include <grp.h> |
| 43 | #include <pthread.h> |
| 44 | #include <pwd.h> |
| 45 | #include <stdio.h> |
| 46 | #include <unistd.h> |
| 47 | |
| 48 | /* |
| 49 | * sysconf -- |
| 50 | * get configurable system variables. |
| 51 | * |
| 52 | * XXX |
| 53 | * POSIX 1003.1 (ISO/IEC 9945-1, 4.8.1.3) states that the variable values |
| 54 | * not change during the lifetime of the calling process. This would seem |
| 55 | * to require that any change to system limits kill all running processes. |
| 56 | * A workaround might be to cache the values when they are first retrieved |
| 57 | * and then simply return the cached value on subsequent calls. This is |
| 58 | * less useful than returning up-to-date values, however. |
| 59 | */ |
| 60 | long |
| 61 | sysconf(int name) |
| 62 | { |
| 63 | struct rlimit rl; |
| 64 | size_t len; |
| 65 | int mib[3], value, namelen, sverrno; |
| 66 | |
| 67 | len = sizeof(value); |
| 68 | namelen = 2; |
| 69 | |
| 70 | switch (name) { |
| 71 | /* 1003.1 */ |
| 72 | case _SC_ARG_MAX1: |
| 73 | mib[0] = CTL_KERN1; |
| 74 | mib[1] = KERN_ARGMAX8; |
| 75 | break; |
| 76 | case _SC_CHILD_MAX2: |
| 77 | if (getrlimit(RLIMIT_NPROC7, &rl) != 0) |
| 78 | return (-1); |
| 79 | if (rl.rlim_cur == RLIM_INFINITY(((rlim_t)1 << 63) - 1)) |
| 80 | return (-1); |
| 81 | if (rl.rlim_cur > LONG_MAX0x7fffffffffffffffL) { |
| 82 | errno(*__errno()) = EOVERFLOW87; |
| 83 | return (-1); |
| 84 | } |
| 85 | return ((long)rl.rlim_cur); |
| 86 | case _SC_CLK_TCK3: |
| 87 | return (CLK_TCK100); |
| 88 | case _SC_JOB_CONTROL6: |
| 89 | return (_POSIX_JOB_CONTROL1); |
| 90 | case _SC_NGROUPS_MAX4: |
| 91 | mib[0] = CTL_KERN1; |
| 92 | mib[1] = KERN_NGROUPS18; |
| 93 | break; |
| 94 | case _SC_OPEN_MAX5: |
| 95 | if (getrlimit(RLIMIT_NOFILE8, &rl) != 0) |
| 96 | return (-1); |
| 97 | if (rl.rlim_cur == RLIM_INFINITY(((rlim_t)1 << 63) - 1)) |
| 98 | return (-1); |
| 99 | if (rl.rlim_cur > LONG_MAX0x7fffffffffffffffL) { |
| 100 | errno(*__errno()) = EOVERFLOW87; |
| 101 | return (-1); |
| 102 | } |
| 103 | return ((long)rl.rlim_cur); |
| 104 | case _SC_STREAM_MAX26: |
| 105 | if (getrlimit(RLIMIT_NOFILE8, &rl) != 0) |
| 106 | return (-1); |
| 107 | if (rl.rlim_cur == RLIM_INFINITY(((rlim_t)1 << 63) - 1)) |
| 108 | return (-1); |
| 109 | if (rl.rlim_cur > LONG_MAX0x7fffffffffffffffL) { |
| 110 | errno(*__errno()) = EOVERFLOW87; |
| 111 | return (-1); |
| 112 | } |
| 113 | /* |
| 114 | * struct __sFILE currently has a limitation that |
| 115 | * file descriptors must fit in a signed short. |
| 116 | * This doesn't precisely capture the letter of POSIX |
| 117 | * but approximates the spirit. |
| 118 | */ |
| 119 | if (rl.rlim_cur > SHRT_MAX0x7fff) |
| 120 | return (SHRT_MAX0x7fff); |
| 121 | |
| 122 | return ((long)rl.rlim_cur); |
| 123 | case _SC_TZNAME_MAX27: |
| 124 | return (NAME_MAX255); |
| 125 | case _SC_SAVED_IDS7: |
| 126 | return (_POSIX_SAVED_IDS1); |
| 127 | case _SC_VERSION8: |
| 128 | mib[0] = CTL_KERN1; |
| 129 | mib[1] = KERN_POSIX117; |
| 130 | break; |
| 131 | |
| 132 | /* 1003.1b */ |
| 133 | case _SC_PAGESIZE28: |
| 134 | if (_pagesize != 0) |
| 135 | return (_pagesize); |
| 136 | mib[0] = CTL_HW6; |
| 137 | mib[1] = HW_PAGESIZE7; |
| 138 | break; |
| 139 | case _SC_FSYNC29: |
| 140 | return (_POSIX_FSYNC200112L); |
| 141 | |
| 142 | /* 1003.1c */ |
| 143 | case _SC_LOGIN_NAME_MAX102: |
| 144 | return (LOGIN_NAME_MAX32); |
| 145 | |
| 146 | case _SC_THREAD_SAFE_FUNCTIONS103: |
| 147 | return (_POSIX_THREAD_SAFE_FUNCTIONS200112L); |
| 148 | |
| 149 | case _SC_GETGR_R_SIZE_MAX100: |
| 150 | return (_GR_BUF_LEN(1024+200*sizeof(char*))); |
| 151 | |
| 152 | case _SC_GETPW_R_SIZE_MAX101: |
| 153 | return (_PW_BUF_LEN1024); |
| 154 | |
| 155 | /* 1003.2 */ |
| 156 | case _SC_BC_BASE_MAX9: |
| 157 | return (BC_BASE_MAX0x7fffffff); |
| 158 | case _SC_BC_DIM_MAX10: |
| 159 | return (BC_DIM_MAX65535); |
| 160 | case _SC_BC_SCALE_MAX11: |
| 161 | return (BC_SCALE_MAX0x7fffffff); |
| 162 | case _SC_BC_STRING_MAX12: |
| 163 | return (BC_STRING_MAX0x7fffffff); |
| 164 | case _SC_COLL_WEIGHTS_MAX13: |
| 165 | return (COLL_WEIGHTS_MAX2); |
| 166 | case _SC_EXPR_NEST_MAX14: |
| 167 | return (EXPR_NEST_MAX32); |
| 168 | case _SC_LINE_MAX15: |
| 169 | return (LINE_MAX2048); |
| 170 | case _SC_RE_DUP_MAX16: |
| 171 | return (RE_DUP_MAX255); |
| 172 | case _SC_2_VERSION17: |
| 173 | return (_POSIX2_VERSION200809L); |
| 174 | case _SC_2_C_BIND18: |
| 175 | return (_POSIX2_C_BIND200112L); |
| 176 | case _SC_2_C_DEV19: |
| 177 | return (_POSIX2_C_DEV(-1)); |
| 178 | case _SC_2_CHAR_TERM20: |
| 179 | return (_POSIX2_CHAR_TERM1); |
| 180 | case _SC_2_FORT_DEV21: |
| 181 | return (_POSIX2_FORT_DEV(-1)); |
| 182 | case _SC_2_FORT_RUN22: |
| 183 | return (_POSIX2_FORT_RUN(-1)); |
| 184 | case _SC_2_LOCALEDEF23: |
| 185 | return (_POSIX2_LOCALEDEF(-1)); |
| 186 | case _SC_2_SW_DEV24: |
| 187 | return (_POSIX2_SW_DEV200112L); |
| 188 | case _SC_2_UPE25: |
| 189 | return (_POSIX2_UPE200112L); |
| 190 | |
| 191 | /* XPG 4.2 */ |
| 192 | case _SC_XOPEN_SHM30: |
| 193 | mib[0] = CTL_KERN1; |
| 194 | mib[1] = KERN_SYSVSHM36; |
| 195 | if (sysctl(mib, namelen, &value, &len, NULL((void *)0), 0) == -1) |
| 196 | return (-1); |
| 197 | if (value == 0) |
| 198 | return (-1); |
| 199 | return (value); |
| 200 | break; |
| 201 | case _SC_SEM_NSEMS_MAX31: |
| 202 | return (-1); |
| 203 | case _SC_SEM_VALUE_MAX32: |
| 204 | return (SEM_VALUE_MAX0xffffffffU); |
| 205 | |
| 206 | /* Unsorted */ |
| 207 | case _SC_HOST_NAME_MAX33: |
| 208 | return (HOST_NAME_MAX255); /* does not include \0 */ |
| 209 | case _SC_MONOTONIC_CLOCK34: |
| 210 | return (_POSIX_MONOTONIC_CLOCK200112L); |
| 211 | case _SC_2_PBS35: |
| 212 | case _SC_2_PBS_ACCOUNTING36: |
| 213 | case _SC_2_PBS_CHECKPOINT37: |
| 214 | case _SC_2_PBS_LOCATE38: |
| 215 | case _SC_2_PBS_MESSAGE39: |
| 216 | case _SC_2_PBS_TRACK40: |
| 217 | return (_POSIX2_PBS(-1)); |
| 218 | case _SC_ADVISORY_INFO41: |
| 219 | return (_POSIX_ADVISORY_INFO(-1)); |
| 220 | case _SC_AIO_LISTIO_MAX42: |
| 221 | case _SC_AIO_MAX43: |
| 222 | case _SC_AIO_PRIO_DELTA_MAX44: |
| 223 | return (-1); |
| 224 | case _SC_ASYNCHRONOUS_IO45: |
| 225 | return (_POSIX_ASYNCHRONOUS_IO(-1)); |
| 226 | case _SC_ATEXIT_MAX46: |
| 227 | return (-1); |
| 228 | case _SC_BARRIERS47: |
| 229 | return (_POSIX_BARRIERS200112L); |
| 230 | case _SC_CLOCK_SELECTION48: |
| 231 | return (_POSIX_CLOCK_SELECTION(-1)); |
| 232 | case _SC_CPUTIME49: |
| 233 | return (_POSIX_CPUTIME200809L); |
| 234 | case _SC_DELAYTIMER_MAX50: |
| 235 | return (-1); |
| 236 | case _SC_IOV_MAX51: |
| 237 | return (IOV_MAX1024); |
| 238 | case _SC_IPV652: |
| 239 | #if _POSIX_IPV60 == 0 |
| 240 | sverrno = errno(*__errno()); |
| 241 | mib[0] = CTL_NET4; |
| 242 | mib[1] = PF_INET624; |
| 243 | mib[2] = 0; |
| 244 | namelen = 3; |
Value stored to 'namelen' is never read | |
| 245 | value = 0; |
| 246 | if (sysctl(mib, 3, NULL((void *)0), 0, NULL((void *)0), 0) == -1) |
| 247 | value = errno(*__errno()); |
| 248 | errno(*__errno()) = sverrno; |
| 249 | if (value != ENOPROTOOPT42) |
| 250 | return (200112L); |
| 251 | else |
| 252 | return (0); |
| 253 | #else |
| 254 | return (_POSIX_IPV60); |
| 255 | #endif |
| 256 | case _SC_MAPPED_FILES53: |
| 257 | return (_POSIX_MAPPED_FILES200112L); |
| 258 | case _SC_MEMLOCK54: |
| 259 | return (_POSIX_MEMLOCK200112L); |
| 260 | case _SC_MEMLOCK_RANGE55: |
| 261 | return (_POSIX_MEMLOCK_RANGE200112L); |
| 262 | case _SC_MEMORY_PROTECTION56: |
| 263 | return (_POSIX_MEMORY_PROTECTION200112L); |
| 264 | case _SC_MESSAGE_PASSING57: |
| 265 | return (_POSIX_MESSAGE_PASSING(-1)); |
| 266 | case _SC_PRIORITIZED_IO60: |
| 267 | return (_POSIX_PRIORITIZED_IO(-1)); |
| 268 | case _SC_PRIORITY_SCHEDULING61: |
| 269 | return (_POSIX_PRIORITY_SCHEDULING(-1)); |
| 270 | case _SC_RAW_SOCKETS62: |
| 271 | return (_POSIX_RAW_SOCKETS200112L); |
| 272 | case _SC_READER_WRITER_LOCKS63: |
| 273 | return (_POSIX_READER_WRITER_LOCKS200112L); |
| 274 | case _SC_REALTIME_SIGNALS64: |
| 275 | return (_POSIX_REALTIME_SIGNALS(-1)); |
| 276 | case _SC_REGEXP65: |
| 277 | return (_POSIX_REGEXP1); |
| 278 | case _SC_SEMAPHORES67: |
| 279 | return (_POSIX_SEMAPHORES200112L); |
| 280 | case _SC_SHARED_MEMORY_OBJECTS68: |
| 281 | return (_POSIX_SHARED_MEMORY_OBJECTS200809L); |
| 282 | case _SC_SHELL69: |
| 283 | return (_POSIX_SHELL1); |
| 284 | case _SC_SIGQUEUE_MAX70: |
| 285 | return (-1); |
| 286 | case _SC_SPAWN71: |
| 287 | return (_POSIX_SPAWN200112L); |
| 288 | case _SC_SPIN_LOCKS72: |
| 289 | return (_POSIX_SPIN_LOCKS200112L); |
| 290 | case _SC_SPORADIC_SERVER73: |
| 291 | return (_POSIX_SPORADIC_SERVER(-1)); |
| 292 | case _SC_SYNCHRONIZED_IO75: |
| 293 | return (_POSIX_SYNCHRONIZED_IO(-1)); |
| 294 | case _SC_SYMLOOP_MAX76: |
| 295 | return (SYMLOOP_MAX32); |
| 296 | case _SC_THREAD_ATTR_STACKADDR77: |
| 297 | return (_POSIX_THREAD_ATTR_STACKADDR200112L); |
| 298 | case _SC_THREAD_ATTR_STACKSIZE78: |
| 299 | return (_POSIX_THREAD_ATTR_STACKSIZE200112L); |
| 300 | case _SC_THREAD_CPUTIME79: |
| 301 | return (_POSIX_THREAD_CPUTIME200809L); |
| 302 | case _SC_THREAD_DESTRUCTOR_ITERATIONS80: |
| 303 | return (PTHREAD_DESTRUCTOR_ITERATIONS4); |
| 304 | case _SC_THREAD_KEYS_MAX81: |
| 305 | return (PTHREAD_KEYS_MAX256); |
| 306 | case _SC_THREAD_PRIO_INHERIT82: |
| 307 | return (_POSIX_THREAD_PRIO_INHERIT(-1)); |
| 308 | case _SC_THREAD_PRIO_PROTECT83: |
| 309 | return (_POSIX_THREAD_PRIO_PROTECT(-1)); |
| 310 | case _SC_THREAD_PRIORITY_SCHEDULING84: |
| 311 | return (_POSIX_THREAD_PRIORITY_SCHEDULING(-1)); |
| 312 | case _SC_THREAD_PROCESS_SHARED85: |
| 313 | return (_POSIX_THREAD_PROCESS_SHARED(-1)); |
| 314 | case _SC_THREAD_ROBUST_PRIO_INHERIT86: |
| 315 | return (_POSIX_THREAD_ROBUST_PRIO_INHERIT(-1)); |
| 316 | case _SC_THREAD_ROBUST_PRIO_PROTECT87: |
| 317 | return (_POSIX_THREAD_ROBUST_PRIO_PROTECT(-1)); |
| 318 | case _SC_THREAD_SPORADIC_SERVER88: |
| 319 | return (_POSIX_THREAD_SPORADIC_SERVER(-1)); |
| 320 | case _SC_THREAD_STACK_MIN89: |
| 321 | return (PTHREAD_STACK_MIN(1U << 12)); |
| 322 | case _SC_THREAD_THREADS_MAX90: |
| 323 | return (PTHREAD_THREADS_MAX0xffffffffffffffffUL); |
| 324 | case _SC_THREADS91: |
| 325 | return (_POSIX_THREADS200112L); |
| 326 | case _SC_TIMEOUTS92: |
| 327 | return (_POSIX_TIMEOUTS200112L); |
| 328 | case _SC_TIMER_MAX93: |
| 329 | return (-1); |
| 330 | case _SC_TIMERS94: |
| 331 | return (_POSIX_TIMERS(-1)); |
| 332 | case _SC_TRACE95: |
| 333 | case _SC_TRACE_EVENT_FILTER96: |
| 334 | case _SC_TRACE_EVENT_NAME_MAX97: |
| 335 | case _SC_TRACE_INHERIT98: |
| 336 | case _SC_TRACE_LOG99: |
| 337 | return (_POSIX_TRACE(-1)); |
| 338 | case _SC_TTY_NAME_MAX107: |
| 339 | return (TTY_NAME_MAX260); |
| 340 | case _SC_TYPED_MEMORY_OBJECTS108: |
| 341 | return (_POSIX_TYPED_MEMORY_OBJECTS(-1)); |
| 342 | case _SC_V6_ILP32_OFF32109: |
| 343 | return (_POSIX_V6_ILP32_OFF32(-1)); |
| 344 | case _SC_V6_ILP32_OFFBIG110: |
| 345 | #if _POSIX_V6_ILP32_OFFBIG0 == 0 |
| 346 | if (sizeof(int) * CHAR_BIT8 == 32 && |
| 347 | sizeof(long) * CHAR_BIT8 == 32 && |
| 348 | sizeof(void *) * CHAR_BIT8 == 32 && |
| 349 | sizeof(off_t) * CHAR_BIT8 >= 64) |
| 350 | return 1; |
| 351 | else |
| 352 | return -1; |
| 353 | #else |
| 354 | return (_POSIX_V6_ILP32_OFFBIG0); |
| 355 | #endif |
| 356 | case _SC_V6_LP64_OFF64111: |
| 357 | #if _POSIX_V6_LP64_OFF640 == 0 |
| 358 | if (sizeof(int) * CHAR_BIT8 == 32 && |
| 359 | sizeof(long) * CHAR_BIT8 == 64 && |
| 360 | sizeof(void *) * CHAR_BIT8 == 64 && |
| 361 | sizeof(off_t) * CHAR_BIT8 == 64) |
| 362 | return 1; |
| 363 | else |
| 364 | return -1; |
| 365 | #else |
| 366 | return (_POSIX_V6_LP64_OFF640); |
| 367 | #endif |
| 368 | case _SC_V6_LPBIG_OFFBIG112: |
| 369 | #if _POSIX_V6_LPBIG_OFFBIG0 == 0 |
| 370 | if (sizeof(int) * CHAR_BIT8 >= 32 && |
| 371 | sizeof(long) * CHAR_BIT8 >= 64 && |
| 372 | sizeof(void *) * CHAR_BIT8 >= 64 && |
| 373 | sizeof(off_t) * CHAR_BIT8 >= 64) |
| 374 | return 1; |
| 375 | else |
| 376 | return -1; |
| 377 | #else |
| 378 | return (_POSIX_V6_LPBIG_OFFBIG0); |
| 379 | #endif |
| 380 | case _SC_V7_ILP32_OFF32113: |
| 381 | return (_POSIX_V7_ILP32_OFF32(-1)); |
| 382 | case _SC_V7_ILP32_OFFBIG114: |
| 383 | #if _POSIX_V7_ILP32_OFFBIG0 == 0 |
| 384 | if (sizeof(int) * CHAR_BIT8 == 32 && |
| 385 | sizeof(long) * CHAR_BIT8 == 32 && |
| 386 | sizeof(void *) * CHAR_BIT8 == 32 && |
| 387 | sizeof(off_t) * CHAR_BIT8 >= 64) |
| 388 | return 1; |
| 389 | else |
| 390 | return -1; |
| 391 | #else |
| 392 | return (_POSIX_V7_ILP32_OFFBIG0); |
| 393 | #endif |
| 394 | case _SC_V7_LP64_OFF64115: |
| 395 | #if _POSIX_V7_LP64_OFF640 == 0 |
| 396 | if (sizeof(int) * CHAR_BIT8 == 32 && |
| 397 | sizeof(long) * CHAR_BIT8 == 64 && |
| 398 | sizeof(void *) * CHAR_BIT8 == 64 && |
| 399 | sizeof(off_t) * CHAR_BIT8 == 64) |
| 400 | return 1; |
| 401 | else |
| 402 | return -1; |
| 403 | #else |
| 404 | return (_POSIX_V7_LP64_OFF640); |
| 405 | #endif |
| 406 | case _SC_V7_LPBIG_OFFBIG116: |
| 407 | #if _POSIX_V7_LPBIG_OFFBIG0 == 0 |
| 408 | if (sizeof(int) * CHAR_BIT8 >= 32 && |
| 409 | sizeof(long) * CHAR_BIT8 >= 64 && |
| 410 | sizeof(void *) * CHAR_BIT8 >= 64 && |
| 411 | sizeof(off_t) * CHAR_BIT8 >= 64) |
| 412 | return 1; |
| 413 | else |
| 414 | return -1; |
| 415 | #else |
| 416 | return (_POSIX_V7_LPBIG_OFFBIG0); |
| 417 | #endif |
| 418 | case _SC_XOPEN_CRYPT117: |
| 419 | return (_XOPEN_CRYPT1); |
| 420 | case _SC_XOPEN_ENH_I18N118: |
| 421 | return (_XOPEN_ENH_I18N(-1)); |
| 422 | case _SC_XOPEN_LEGACY119: |
| 423 | return (_XOPEN_LEGACY(-1)); |
| 424 | case _SC_XOPEN_REALTIME120: |
| 425 | return (_XOPEN_REALTIME(-1)); |
| 426 | case _SC_XOPEN_REALTIME_THREADS121: |
| 427 | return (_XOPEN_REALTIME_THREADS(-1)); |
| 428 | case _SC_XOPEN_STREAMS122: |
| 429 | return (_XOPEN_STREAMS(-1)); |
| 430 | case _SC_XOPEN_UNIX123: |
| 431 | return (_XOPEN_UNIX(-1)); |
| 432 | case _SC_XOPEN_UUCP124: |
| 433 | return (_XOPEN_UUCP(-1)); |
| 434 | #ifdef _XOPEN_VERSION |
| 435 | case _SC_XOPEN_VERSION125: |
| 436 | return (_XOPEN_VERSION); |
| 437 | #endif |
| 438 | |
| 439 | /* Extensions */ |
| 440 | case _SC_PHYS_PAGES500: |
| 441 | { |
| 442 | int64_t physmem; |
| 443 | |
| 444 | mib[0] = CTL_HW6; |
| 445 | mib[1] = HW_PHYSMEM6419; |
| 446 | len = sizeof(physmem); |
| 447 | if (sysctl(mib, namelen, &physmem, &len, NULL((void *)0), 0) == -1) |
| 448 | return (-1); |
| 449 | return (physmem / getpagesize()); |
| 450 | } |
| 451 | case _SC_AVPHYS_PAGES501: |
| 452 | { |
| 453 | struct uvmexp uvmexp; |
| 454 | |
| 455 | mib[0] = CTL_VM2; |
| 456 | mib[1] = VM_UVMEXP4; |
| 457 | len = sizeof(uvmexp); |
| 458 | if (sysctl(mib, namelen, &uvmexp, &len, NULL((void *)0), 0) == -1) |
| 459 | return (-1); |
| 460 | return (uvmexp.free); |
| 461 | } |
| 462 | |
| 463 | case _SC_NPROCESSORS_CONF502: |
| 464 | mib[0] = CTL_HW6; |
| 465 | mib[1] = HW_NCPU3; |
| 466 | break; |
| 467 | case _SC_NPROCESSORS_ONLN503: |
| 468 | mib[0] = CTL_HW6; |
| 469 | mib[1] = HW_NCPUONLINE25; |
| 470 | break; |
| 471 | |
| 472 | default: |
| 473 | errno(*__errno()) = EINVAL22; |
| 474 | return (-1); |
| 475 | } |
| 476 | return (sysctl(mib, namelen, &value, &len, NULL((void *)0), 0) == -1 ? -1 : value); |
| 477 | } |
| 478 | DEF_WEAK(sysconf)__asm__(".weak " "sysconf" " ; " "sysconf" " = " "_libc_sysconf" ); |