/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 2013 Gary Mills * * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1988 AT&T */ /* All Rights Reserved */ /* sysconf(3C) - returns system configuration information */ #pragma weak _sysconf = sysconf #include "lint.h" #include <mtlib.h> #include <sys/types.h> #include <unistd.h> #include <sys/sysconfig.h> #include <limits.h> #include <time.h> #include <errno.h> #include <nss_dbdefs.h> #include <thread.h> #include <xti.h> #include "libc.h" #include "xpg6.h" /* from nss_common.c */ extern size_t _nss_get_bufsizes(int); long sysconf(int name) { static int _pagesize = 0; static int _hz = 0; static pid_t _maxpid = 0; static int _stackprot = 0; static int _ngroups_max; extern int __xpg4; switch (name) { default: errno = EINVAL; return (-1L); case _SC_ARG_MAX: return ((long)ARG_MAX); case _SC_CLK_TCK: if (_hz <= 0) _hz = _sysconfig(_CONFIG_CLK_TCK); return (_hz); case _SC_JOB_CONTROL: return ((long)_POSIX_JOB_CONTROL); case _SC_SAVED_IDS: return ((long)_POSIX_SAVED_IDS); case _SC_CHILD_MAX: return (_sysconfig(_CONFIG_CHILD_MAX)); case _SC_NGROUPS_MAX: if (_ngroups_max <= 0) _ngroups_max = _sysconfig(_CONFIG_NGROUPS); return (_ngroups_max); case _SC_OPEN_MAX: return (_sysconfig(_CONFIG_OPEN_FILES)); case _SC_VERSION: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (200112L); else return (199506L); case _SC_PAGESIZE: if (_pagesize <= 0) _pagesize = _sysconfig(_CONFIG_PAGESIZE); return (_pagesize); case _SC_XOPEN_VERSION: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (600L); else if (__xpg4 == 0) return (_sysconfig(_CONFIG_XOPEN_VER)); else return (4L); case _SC_XOPEN_XCU_VERSION: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (600L); else return (4L); /* * old value for pre XPG5 conformant systems to match * getpass() length. * XPG5 special cased with __sysconf_xpg5() * new value for default and modern XPG systems. */ case _SC_PASS_MAX: if ((__xpg4 == 1) && (!(__xpg6 & _C99SUSv3_XPG6_sysconf_version))) return ((long)_PASS_MAX_XPG); else return ((long)_PASS_MAX); case _SC_LOGNAME_MAX: return ((long)LOGNAME_MAX); case _SC_STREAM_MAX: return (_sysconfig(_CONFIG_OPEN_FILES)); case _SC_TZNAME_MAX: return (-1L); case _SC_NPROCESSORS_CONF: return (_sysconfig(_CONFIG_NPROC_CONF)); case _SC_NPROCESSORS_ONLN: return (_sysconfig(_CONFIG_NPROC_ONLN)); case _SC_NPROCESSORS_MAX: return (_sysconfig(_CONFIG_NPROC_MAX)); case _SC_STACK_PROT: if (_stackprot == 0) _stackprot = _sysconfig(_CONFIG_STACK_PROT); return (_stackprot); /* POSIX.4 names */ /* * Each of the following also have _POSIX_* symbols * defined in <unistd.h>. Values here should align * with values in the header. Up until the SUSv3 standard * we defined these simply as 1. With the introduction * of the new revision, these were changed to 200112L. * The standard allows us to change the value, however, * we have kept both values in case application programs * are relying on the previous value even though an * application doing so is technically wrong. */ case _SC_ASYNCHRONOUS_IO: case _SC_FSYNC: case _SC_MAPPED_FILES: case _SC_MEMLOCK: case _SC_MEMLOCK_RANGE: case _SC_MEMORY_PROTECTION: case _SC_MESSAGE_PASSING: case _SC_PRIORITY_SCHEDULING: case _SC_REALTIME_SIGNALS: case _SC_SEMAPHORES: case _SC_SHARED_MEMORY_OBJECTS: case _SC_SYNCHRONIZED_IO: case _SC_TIMERS: if (__xpg6 & _C99SUSv3_mode_ON) return (200112L); else return (1L); case _SC_PRIORITIZED_IO: #ifdef _POSIX_PRIORITIZED_IO return (1L); #else return (-1L); #endif case _SC_AIO_LISTIO_MAX: return (_sysconfig(_CONFIG_AIO_LISTIO_MAX)); case _SC_AIO_MAX: return (_sysconfig(_CONFIG_AIO_MAX)); case _SC_AIO_PRIO_DELTA_MAX: return (_sysconfig(_CONFIG_AIO_PRIO_DELTA_MAX)); case _SC_DELAYTIMER_MAX: return (_sysconfig(_CONFIG_DELAYTIMER_MAX)); case _SC_MQ_OPEN_MAX: return (_sysconfig(_CONFIG_MQ_OPEN_MAX)); case _SC_MQ_PRIO_MAX: return (_sysconfig(_CONFIG_MQ_PRIO_MAX)); case _SC_RTSIG_MAX: return (_sysconfig(_CONFIG_RTSIG_MAX)); case _SC_SEM_NSEMS_MAX: return (_sysconfig(_CONFIG_SEM_NSEMS_MAX)); case _SC_SEM_VALUE_MAX: return (_sysconfig(_CONFIG_SEM_VALUE_MAX)); case _SC_SIGQUEUE_MAX: return (_sysconfig(_CONFIG_SIGQUEUE_MAX)); case _SC_SIGRT_MAX: return (_sysconfig(_CONFIG_SIGRT_MAX)); case _SC_SIGRT_MIN: return (_sysconfig(_CONFIG_SIGRT_MIN)); case _SC_TIMER_MAX: return (_sysconfig(_CONFIG_TIMER_MAX)); case _SC_PHYS_PAGES: return (_sysconfig(_CONFIG_PHYS_PAGES)); case _SC_AVPHYS_PAGES: return (_sysconfig(_CONFIG_AVPHYS_PAGES)); /* XPG4/POSIX.1-1990/POSIX.2-1992 names */ case _SC_2_C_BIND: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (200112L); else return (1L); case _SC_2_CHAR_TERM: return ((long)_POSIX2_CHAR_TERM); case _SC_2_C_DEV: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (200112L); else return (1L); case _SC_2_C_VERSION: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (200112L); else return (199209L); case _SC_2_FORT_DEV: return (-1L); case _SC_2_FORT_RUN: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (200112L); else return (1L); case _SC_2_LOCALEDEF: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (200112L); else return (1L); case _SC_2_SW_DEV: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (200112L); else return (1L); case _SC_2_UPE: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (200112L); else return (1L); case _SC_2_VERSION: if (__xpg6 & _C99SUSv3_XPG6_sysconf_version) return (200112L); else return (199209L); case _SC_BC_BASE_MAX: return ((long)BC_BASE_MAX); case _SC_BC_DIM_MAX: return ((long)BC_DIM_MAX); case _SC_BC_SCALE_MAX: return ((long)BC_SCALE_MAX); case _SC_BC_STRING_MAX: return ((long)BC_STRING_MAX); case _SC_COLL_WEIGHTS_MAX: return ((long)COLL_WEIGHTS_MAX); case _SC_EXPR_NEST_MAX: return ((long)EXPR_NEST_MAX); case _SC_LINE_MAX: return ((long)LINE_MAX); case _SC_RE_DUP_MAX: return ((long)RE_DUP_MAX); case _SC_XOPEN_CRYPT: return (1L); case _SC_XOPEN_ENH_I18N: return ((long)_XOPEN_ENH_I18N); case _SC_XOPEN_SHM: return ((long)_XOPEN_SHM); /* XPG4v2 (SUS) names */ case _SC_XOPEN_UNIX: return (1L); case _SC_XOPEN_LEGACY: return (1L); case _SC_ATEXIT_MAX: return (-1L); case _SC_IOV_MAX: return ((long)IOV_MAX); case _SC_T_IOV_MAX: return ((long)T_IOV_MAX); /* XPG5 (SUSv2) names */ case _SC_XOPEN_REALTIME: return (1L); case _SC_XOPEN_REALTIME_THREADS: #if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && \ defined(_POSIX_THREAD_PRIO_INHERIT) && \ defined(_POSIX_THREAD_PRIO_PROTECT) return (1L); #else return (-1L); #endif case _SC_XBS5_ILP32_OFF32: return (1L); case _SC_XBS5_ILP32_OFFBIG: return (1L); case _SC_XBS5_LP64_OFF64: return (1L); case _SC_XBS5_LPBIG_OFFBIG: return (1L); /* POSIX.1c names */ case _SC_THREAD_DESTRUCTOR_ITERATIONS: return (-1L); case _SC_GETGR_R_SIZE_MAX: return ((long)_nss_get_bufsizes(_SC_GETGR_R_SIZE_MAX)); case _SC_GETPW_R_SIZE_MAX: return ((long)NSS_BUFLEN_PASSWD); case _SC_LOGIN_NAME_MAX: return ((long)(LOGIN_NAME_MAX)); case _SC_THREAD_KEYS_MAX: return (-1L); case _SC_THREAD_STACK_MIN: return ((long)thr_min_stack()); case _SC_THREAD_THREADS_MAX: return (-1L); case _SC_TTY_NAME_MAX: return ((long)TTYNAME_MAX); case _SC_BARRIERS: return ((long)_POSIX_BARRIERS); case _SC_CLOCK_SELECTION: return ((long)_POSIX_CLOCK_SELECTION); case _SC_MONOTONIC_CLOCK: return ((long)_POSIX_MONOTONIC_CLOCK); case _SC_SPAWN: return ((long)_POSIX_SPAWN); case _SC_SPIN_LOCKS: return ((long)_POSIX_SPIN_LOCKS); case _SC_THREADS: case _SC_THREAD_ATTR_STACKADDR: case _SC_THREAD_ATTR_STACKSIZE: case _SC_THREAD_PRIORITY_SCHEDULING: case _SC_THREAD_PRIO_INHERIT: case _SC_THREAD_PRIO_PROTECT: case _SC_THREAD_PROCESS_SHARED: case _SC_THREAD_SAFE_FUNCTIONS: if (__xpg6 & _C99SUSv3_mode_ON) return (200112L); else return (1L); case _SC_TIMEOUTS: return ((long)_POSIX_TIMEOUTS); /* 1216676 - cache info */ case _SC_COHER_BLKSZ: return (_sysconfig(_CONFIG_COHERENCY)); case _SC_SPLIT_CACHE: return (_sysconfig(_CONFIG_SPLIT_CACHE)); case _SC_ICACHE_SZ: return (_sysconfig(_CONFIG_ICACHESZ)); case _SC_DCACHE_SZ: return (_sysconfig(_CONFIG_DCACHESZ)); case _SC_ICACHE_LINESZ: return (_sysconfig(_CONFIG_ICACHELINESZ)); case _SC_DCACHE_LINESZ: return (_sysconfig(_CONFIG_DCACHELINESZ)); case _SC_ICACHE_BLKSZ: return (_sysconfig(_CONFIG_ICACHEBLKSZ)); case _SC_DCACHE_BLKSZ: return (_sysconfig(_CONFIG_DCACHEBLKSZ)); case _SC_DCACHE_TBLKSZ: return (_sysconfig(_CONFIG_DCACHETBLKSZ)); case _SC_ICACHE_ASSOC: return (_sysconfig(_CONFIG_ICACHE_ASSOC)); case _SC_DCACHE_ASSOC: return (_sysconfig(_CONFIG_DCACHE_ASSOC)); case _SC_MAXPID: if (_maxpid <= 0) _maxpid = _sysconfig(_CONFIG_MAXPID); return (_maxpid); case _SC_CPUID_MAX: return (_sysconfig(_CONFIG_CPUID_MAX)); case _SC_EPHID_MAX: return (_sysconfig(_CONFIG_EPHID_MAX)); case _SC_UADDR_MAX: return (_sysconfig(_CONFIG_UADDR_MAX)); /* UNIX 03 names - XPG6/SUSv3/POSIX.1-2001 */ case _SC_REGEXP: return ((long)_POSIX_REGEXP); case _SC_SHELL: return ((long)_POSIX_SHELL); case _SC_ADVISORY_INFO: return ((long)_POSIX_ADVISORY_INFO); case _SC_HOST_NAME_MAX: return ((long)_POSIX_HOST_NAME_MAX); case _SC_READER_WRITER_LOCKS: return ((long)_POSIX_READER_WRITER_LOCKS); case _SC_IPV6: return ((long)_POSIX_IPV6); case _SC_RAW_SOCKETS: return ((long)_POSIX_RAW_SOCKETS); case _SC_XOPEN_STREAMS: return ((long)_XOPEN_STREAMS); case _SC_SYMLOOP_MAX: return (_sysconfig(_CONFIG_SYMLOOP_MAX)); case _SC_V6_ILP32_OFF32: return (1L); case _SC_V6_ILP32_OFFBIG: return (1L); case _SC_V6_LP64_OFF64: return (1L); case _SC_V6_LPBIG_OFFBIG: return (1L); /* Unsupported UNIX 03 options */ case _SC_2_PBS: case _SC_2_PBS_ACCOUNTING: case _SC_2_PBS_CHECKPOINT: case _SC_2_PBS_LOCATE: case _SC_2_PBS_MESSAGE: case _SC_2_PBS_TRACK: case _SC_CPUTIME: case _SC_SPORADIC_SERVER: case _SC_SS_REPL_MAX: case _SC_THREAD_CPUTIME: case _SC_THREAD_SPORADIC_SERVER: case _SC_TRACE: case _SC_TRACE_EVENT_FILTER: case _SC_TRACE_EVENT_NAME_MAX: case _SC_TRACE_INHERIT: case _SC_TRACE_LOG: case _SC_TRACE_NAME_MAX: case _SC_TRACE_SYS_MAX: case _SC_TRACE_USER_EVENT_MAX: case _SC_TYPED_MEMORY_OBJECTS: return (-1L); } } /* * UNIX 98 version of sysconf needed in order to set _XOPEN_VERSION to 500. */ long __sysconf_xpg5(int name) { switch (name) { default: return (sysconf(name)); case _SC_XOPEN_VERSION: return (500L); case _SC_PASS_MAX: return ((long)_PASS_MAX_XPG); } }
