diff --git a/libc/bionic/sysconf.c b/libc/bionic/sysconf.c deleted file mode 100644 index d21a703ec..000000000 --- a/libc/bionic/sysconf.c +++ /dev/null @@ -1,340 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include // For FOPEN_MAX. -#include -#include -#include - -/* seems to be the default on Linux, per the GLibc sources and my own digging */ - -#define SYSTEM_CLK_TCK 100 -#define SYSTEM_IOV_MAX 1024 -#define SYSTEM_DELAYTIMER_MAX 2147483647 -#define SYSTEM_MQ_OPEN_MAX 8 -#define SYSTEM_MQ_PRIO_MAX 32768 -#define SYSTEM_SEM_NSEMS_MAX 256 -#define SYSTEM_SEM_VALUE_MAX 0x3fffffff /* see bionic/semaphore.c */ -#define SYSTEM_SIGQUEUE_MAX 32 -#define SYSTEM_TIMER_MAX 32 -#define SYSTEM_LOGIN_NAME_MAX 256 -#define SYSTEM_TTY_NAME_MAX 32 - -/* the following depends on our implementation */ -#define SYSTEM_ATEXIT_MAX 65536 /* our implementation is unlimited */ -#define SYSTEM_THREAD_KEYS_MAX BIONIC_TLS_SLOTS -#define SYSTEM_THREAD_STACK_MIN 32768 /* lower values may be possible, but be conservative */ -#define SYSTEM_THREAD_THREADS_MAX 2048 /* really unlimited */ - -#define SYSTEM_2_C_BIND _POSIX_VERSION /* Posix C binding version */ -#define SYSTEM_2_C_VER _POSIX2_C_VERSION -#define SYSTEM_2_C_DEV -1 /* Posix C development tools unsupported on the device */ -#define SYSTEM_2_FORT_DEV -1 /* Fortran development unsupported */ -#define SYSTEM_2_FORT_RUN -1 /* Fortran runtime unsupported */ -#define SYSTEM_2_SW_DEV -1 /* posix software dev utilities unsupported */ -#define SYSTEM_2_LOCALEDEF -1 /* localedef() unimplemented */ -#define SYSTEM_2_UPE -1 /* No UPE for you ! (User Portability Utilities) */ -#define SYSTEM_2_VERSION -1 /* No posix command-line tools */ - -static bool __matches_cpuN(const char* s) { - // The %c trick is to ensure that we have the anchored match "^cpu[0-9]+$". - unsigned cpu; - char dummy; - return (sscanf(s, "cpu%u%c", &cpu, &dummy) == 1); -} - -static int __get_nproc_conf(void) { - // On x86 kernels you can use /proc/cpuinfo for this, but on ARM kernels offline CPUs disappear - // from there. This method works on both. - DIR* d = opendir("/sys/devices/system/cpu"); - if (!d) { - return 1; - } - - int result = 0; - struct dirent* e; - while ((e = readdir(d)) != NULL) { - if (e->d_type == DT_DIR && __matches_cpuN(e->d_name)) { - ++result; - } - } - closedir(d); - return result; -} - -static int __get_nproc_onln(void) { - FILE* fp = fopen("/proc/stat", "r"); - if (fp == NULL) { - return 1; - } - - int result = 0; - char buf[256]; - while (fgets(buf, sizeof(buf), fp) != NULL) { - // Extract just the first word from the line. - // 'cpu0 7976751 1364388 3116842 469770388 8629405 0 49047 0 0 0' - char* p = strchr(buf, ' '); - if (p != NULL) { - *p = 0; - } - if (__matches_cpuN(buf)) { - ++result; - } - } - fclose(fp); - return result; -} - -static int __get_meminfo(const char* pattern) { - FILE* fp = fopen("/proc/meminfo", "r"); - if (fp == NULL) { - return -1; - } - - int result = -1; - char buf[256]; - while (fgets(buf, sizeof(buf), fp) != NULL) { - long total; - if (sscanf(buf, pattern, &total) == 1) { - result = (int) (total / (PAGE_SIZE/1024)); - break; - } - } - fclose(fp); - return result; -} - -static int __get_phys_pages(void) { - return __get_meminfo("MemTotal: %ld kB"); -} - -static int __get_avphys_pages(void) { - return __get_meminfo("MemFree: %ld kB"); -} - -int sysconf(int name) { - switch (name) { -#ifdef _POSIX_ARG_MAX - case _SC_ARG_MAX: return _POSIX_ARG_MAX; -#endif -#ifdef _POSIX2_BC_BASE_MAX - case _SC_BC_BASE_MAX: return _POSIX2_BC_BASE_MAX; -#endif -#ifdef _POSIX2_BC_DIM_MAX - case _SC_BC_DIM_MAX: return _POSIX2_BC_DIM_MAX; -#endif -#ifdef _POSIX2_BC_SCALE_MAX - case _SC_BC_SCALE_MAX: return _POSIX2_BC_SCALE_MAX; -#endif -#ifdef _POSIX2_BC_STRING_MAX - case _SC_BC_STRING_MAX: return _POSIX2_BC_STRING_MAX; -#endif - case _SC_CHILD_MAX: return CHILD_MAX; - case _SC_CLK_TCK: return SYSTEM_CLK_TCK; -#ifdef _POSIX2_COLL_WEIGHTS_MASK - case _SC_COLL_WEIGHTS_MAX: return _POSIX2_COLL_WEIGHTS_MASK; -#endif -#ifdef _POSIX2_EXPR_NEST_MAX - case _SC_EXPR_NEST_MAX: return _POSIX2_EXPR_NEST_MAX; -#endif -#ifdef _POSIX2_LINE_MAX - case _SC_LINE_MAX: return _POSIX2_LINE_MAX; -#endif - case _SC_NGROUPS_MAX: return NGROUPS_MAX; - case _SC_OPEN_MAX: return OPEN_MAX; - //case _SC_PASS_MAX: return PASS_MAX; - case _SC_2_C_BIND: return SYSTEM_2_C_BIND; - case _SC_2_C_DEV: return SYSTEM_2_C_DEV; - case _SC_2_C_VERSION: return SYSTEM_2_C_VER; - //case _SC_2_CHAR_TERM: return ; - case _SC_2_FORT_DEV: return SYSTEM_2_FORT_DEV; - case _SC_2_FORT_RUN: return SYSTEM_2_FORT_RUN; - case _SC_2_LOCALEDEF: return SYSTEM_2_LOCALEDEF; - case _SC_2_SW_DEV: return SYSTEM_2_SW_DEV; - case _SC_2_UPE: return SYSTEM_2_UPE; - case _SC_2_VERSION: return SYSTEM_2_VERSION; -#ifdef _POSIX_JOB_CONTROL - case _SC_JOB_CONTROL: return _POSIX_JOB_CONTROL; -#endif -#ifdef _POSIX_SAVED_IDS - case _SC_SAVED_IDS: return _POSIX_SAVED_IDS; -#endif -#ifdef _POSIX_VERSION - case _SC_VERSION: return _POSIX_VERSION; -#endif - //case _SC_RE_DUP_