/* Copyright (C) 1991-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <grp.h>

#include <pwd.h>

#include <stdio.h>

#include <unistd.h>

#include <time.h>

#include <limits.h>

#include <sys/param.h>

#include <sys/sysinfo.h>

/* Get the value of the system variable NAME.  */

long int

__sysconf (int name)

{

  switch (name)

    {

    default:

      __set_errno (EINVAL);

      return -1;

    case _SC_TZNAME_MAX:

      return -1;

    case _SC_CHARCLASS_NAME_MAX:

#ifdef	CHARCLASS_NAME_MAX

      return CHARCLASS_NAME_MAX;

#else

      return -1;

#endif

    case _SC_COLL_WEIGHTS_MAX:

#ifdef	COLL_WEIGHTS_MAX

      return COLL_WEIGHTS_MAX;

#else

      return -1;

#endif

    case _SC_EQUIV_CLASS_MAX:

#ifdef	EQUIV_CLASS_MAX

      return EQUIV_CLASS_MAX;

#else

      return -1;

#endif

    case _SC_2_LOCALEDEF:

#ifdef	_POSIX2_LOCALEDEF

      return _POSIX2_LOCALEDEF;

#else

      return -1;

#endif

    case _SC_NPROCESSORS_CONF:

      return __get_nprocs_conf ();

    case _SC_NPROCESSORS_ONLN:

      return __get_nprocs ();

    case _SC_PHYS_PAGES:

      return __get_phys_pages ();

    case _SC_AVPHYS_PAGES:

      return __get_avphys_pages ();

    case _SC_ATEXIT_MAX:

      /* We have no limit since we use lists.  */

      return INT_MAX;

    case _SC_PASS_MAX:

      /* We have no limit but since the return value might be used to

	 allocate a buffer we restrict the value.  */

      return BUFSIZ;

    case _SC_CHAR_BIT:

      return CHAR_BIT;

    case _SC_CHAR_MAX:

      return CHAR_MAX;

    case _SC_CHAR_MIN:

      return CHAR_MIN;

    case _SC_INT_MAX:

      return INT_MAX;

    case _SC_INT_MIN:

      return INT_MIN;

    case _SC_LONG_BIT:

      return sizeof (long int) * CHAR_BIT;

    case _SC_WORD_BIT:

      return sizeof (int) * CHAR_BIT;

    case _SC_MB_LEN_MAX:

      return MB_LEN_MAX;

    case _SC_NZERO:

      return NZERO;

    case _SC_SSIZE_MAX:

      return _POSIX_SSIZE_MAX;

    case _SC_SCHAR_MAX:

      return SCHAR_MAX;

    case _SC_SCHAR_MIN:

      return SCHAR_MIN;

    case _SC_SHRT_MAX:

      return SHRT_MAX;

    case _SC_SHRT_MIN:

      return SHRT_MIN;

    case _SC_UCHAR_MAX:

      return UCHAR_MAX;

    case _SC_UINT_MAX:

      return UINT_MAX;

    case _SC_ULONG_MAX:

      return ULONG_MAX;

    case _SC_USHRT_MAX:

      return USHRT_MAX;

    case _SC_GETGR_R_SIZE_MAX:

      return NSS_BUFLEN_GROUP;

    case _SC_GETPW_R_SIZE_MAX:

      return NSS_BUFLEN_PASSWD;

    case _SC_ARG_MAX:

    case _SC_CHILD_MAX:

    case _SC_CLK_TCK:

    case _SC_NGROUPS_MAX:

    case _SC_OPEN_MAX:

    case _SC_STREAM_MAX:

    case _SC_JOB_CONTROL:

    case _SC_SAVED_IDS:

    case _SC_REALTIME_SIGNALS:

    case _SC_PRIORITY_SCHEDULING:

    case _SC_TIMERS:

    case _SC_ASYNCHRONOUS_IO:

    case _SC_PRIORITIZED_IO:

    case _SC_SYNCHRONIZED_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_SEMAPHORES:

    case _SC_SHARED_MEMORY_OBJECTS:

    case _SC_AIO_LISTIO_MAX:

    case _SC_AIO_MAX:

    case _SC_AIO_PRIO_DELTA_MAX:

    case _SC_DELAYTIMER_MAX:

    case _SC_MQ_OPEN_MAX:

    case _SC_MQ_PRIO_MAX:

    case _SC_VERSION:

    case _SC_PAGESIZE:

    case _SC_RTSIG_MAX:

    case _SC_SEM_NSEMS_MAX:

    case _SC_SEM_VALUE_MAX:

    case _SC_SIGQUEUE_MAX:

    case _SC_TIMER_MAX:

    case _SC_PII:

    case _SC_PII_XTI:

    case _SC_PII_SOCKET:

    case _SC_PII_OSI:

    case _SC_POLL:

    case _SC_SELECT:

    case _SC_UIO_MAXIOV:

    case _SC_PII_INTERNET_STREAM:

    case _SC_PII_INTERNET_DGRAM:

    case _SC_PII_OSI_COTS:

    case _SC_PII_OSI_CLTS:

    case _SC_PII_OSI_M:

    case _SC_T_IOV_MAX:

    case _SC_BC_BASE_MAX:

    case _SC_BC_DIM_MAX:

    case _SC_BC_SCALE_MAX:

    case _SC_BC_STRING_MAX:

    case _SC_EXPR_NEST_MAX:

    case _SC_LINE_MAX:

    case _SC_RE_DUP_MAX:

    case _SC_2_VERSION:

    case _SC_2_C_BIND:

    case _SC_2_C_DEV:

    case _SC_2_FORT_DEV:

    case _SC_2_SW_DEV:

    case _SC_2_CHAR_TERM:

    case _SC_2_C_VERSION:

    case _SC_2_UPE:

    case _SC_THREADS:

    case _SC_THREAD_SAFE_FUNCTIONS:

    case _SC_LOGIN_NAME_MAX:

    case _SC_TTY_NAME_MAX:

    case _SC_THREAD_DESTRUCTOR_ITERATIONS:

    case _SC_THREAD_KEYS_MAX:

    case _SC_THREAD_STACK_MIN:

    case _SC_THREAD_THREADS_MAX:

    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_XOPEN_VERSION:

    case _SC_XOPEN_XCU_VERSION:

    case _SC_XOPEN_UNIX:

    case _SC_XOPEN_CRYPT:

    case _SC_XOPEN_ENH_I18N:

    case _SC_XOPEN_SHM:

    case _SC_XOPEN_XPG2:

    case _SC_XOPEN_XPG3:

    case _SC_XOPEN_XPG4:

    case _SC_NL_ARGMAX:

    case _SC_NL_LANGMAX:

    case _SC_NL_MSGMAX:

    case _SC_NL_NMAX:

    case _SC_NL_SETMAX:

    case _SC_NL_TEXTMAX:

    case _SC_XBS5_ILP32_OFF32:

    case _SC_XBS5_ILP32_OFFBIG:

    case _SC_XBS5_LP64_OFF64:

    case _SC_XBS5_LPBIG_OFFBIG:

    case _SC_POSIX_V6_ILP32_OFF32:

    case _SC_POSIX_V6_ILP32_OFFBIG:

    case _SC_POSIX_V6_LP64_OFF64:

    case _SC_POSIX_V6_LPBIG_OFFBIG:

    case _SC_POSIX_V7_ILP32_OFF32:

    case _SC_POSIX_V7_ILP32_OFFBIG:

    case _SC_POSIX_V7_LP64_OFF64:

    case _SC_POSIX_V7_LPBIG_OFFBIG:

    case _SC_XOPEN_LEGACY:

    case _SC_XOPEN_REALTIME:

    case _SC_XOPEN_REALTIME_THREADS:

      break;

    }

  __set_errno (ENOSYS);

  return -1;

}

weak_alias (__sysconf, sysconf)

libc_hidden_def (__sysconf)

stub_warning (sysconf)