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[/] [or1k_old/] [trunk/] [linux/] [uClibc/] [libc/] [unistd/] [sysconf.c] - Blame information for rev 1765

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/* Copyright (C) 1991, 93, 95, 96, 97, 2000 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 Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */
 
#define _XOPEN_SOURCE  500
#include <features.h>
#include <errno.h>
#include <limits.h>
#include <grp.h>
#include <pwd.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <sys/sysinfo.h>
#include <sys/types.h>
#include <regex.h>
 
#ifndef __UCLIBC_CLK_TCK_CONST
#error __UCLIBC_CLK_TCK_CONST not defined!
#endif
 
extern int getpagesize (void);
extern int getdtablesize (void);
 
/***********************************************************************/
/*
 * Manuel Novoa III        Jan 2001
 *
 * On i386, the switch-based implementation generates 796 bytes of code.
 * However, many of the return values are repeats.  By collecting these
 * repeats and moving to a table-based implementation, we generate 283
 * bytes on i386 (-Os -fomit-frame-pointer).
 */
 
#ifdef _UCLIBC_GENERATE_SYSCONF_ARCH
/*
 * Set some errno's so the auto-gen code knows what it is dealing with.
 *    1) ENOSYS signifies that we're returning a default value.
 *       This is just extra info for development.
 *    2) EISNAM signifies that the value returned varies at runtime.
 *
 * Option: GETPAGESIZE_IS_DYNAMIC
 *    The current implementation of getpagesize in uClibc returns
 *    a constant.  The pagesize on the target arch should not vary,
 *    so it should be safe to set this as 0.
 */
#define RETURN_NEG_1 __set_errno(ENOSYS); return -1
#define RETURN_FUNCTION(f) __set_errno(EISNAM); return (long int) #f
#define GETPAGESIZE_IS_DYNAMIC 0
#else
#define RETURN_NEG_1 return -1
#define RETURN_FUNCTION(f) return f;
#endif /* _UCLIBC_GENERATE_SYSCONF_ARCH */
 
/* Get the value of the system variable NAME.  */
long int __sysconf(int name)
{
  switch (name)
    {
    default:
      __set_errno(EINVAL);
      return -1;
 
    case _SC_ARG_MAX:
#ifdef  ARG_MAX
      return ARG_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_CHILD_MAX:
#ifdef  CHILD_MAX
      return CHILD_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_CLK_TCK:
      /* Can't use CLK_TCK here since that calls __sysconf(_SC_CLK_TCK) */
      return __UCLIBC_CLK_TCK_CONST;
 
    case _SC_NGROUPS_MAX:
#ifdef  NGROUPS_MAX
      return NGROUPS_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_OPEN_MAX:
#if 1
      RETURN_FUNCTION(getdtablesize());
#else
      RETURN_NEG_1;
#endif
 
    case _SC_STREAM_MAX:
#ifdef  STREAM_MAX
      return STREAM_MAX;
#else
      return FOPEN_MAX;
#endif
 
    case _SC_TZNAME_MAX:
#if 0
      RETURN_FUNCTION(tzname_max ());
#else
/*       RETURN_NEG_1; */
      return _POSIX_TZNAME_MAX;
#endif
 
    case _SC_JOB_CONTROL:
#ifdef  _POSIX_JOB_CONTROL
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_SAVED_IDS:
#ifdef  _POSIX_SAVED_IDS
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_REALTIME_SIGNALS:
#ifdef  _POSIX_REALTIME_SIGNALS
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PRIORITY_SCHEDULING:
#ifdef  _POSIX_PRIORITY_SCHEDULING
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_TIMERS:
#ifdef  _POSIX_TIMERS
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_ASYNCHRONOUS_IO:
#ifdef  _POSIX_ASYNCHRONOUS_IO
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PRIORITIZED_IO:
#ifdef  _POSIX_PRIORITIZED_IO
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_SYNCHRONIZED_IO:
#ifdef  _POSIX_SYNCHRONIZED_IO
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_FSYNC:
#ifdef  _POSIX_FSYNC
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_MAPPED_FILES:
#ifdef  _POSIX_MAPPED_FILES
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_MEMLOCK:
#ifdef  _POSIX_MEMLOCK
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_MEMLOCK_RANGE:
#ifdef  _POSIX_MEMLOCK_RANGE
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_MEMORY_PROTECTION:
#ifdef  _POSIX_MEMORY_PROTECTION
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_MESSAGE_PASSING:
#ifdef  _POSIX_MESSAGE_PASSING
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_SEMAPHORES:
#ifdef  _POSIX_SEMAPHORES
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_SHARED_MEMORY_OBJECTS:
#ifdef  _POSIX_SHARED_MEMORY_OBJECTS
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_VERSION:
      return _POSIX_VERSION;
 
    case _SC_PAGESIZE:
#if defined(GETPAGESIZE_IS_DYNAMIC) && (GETPAGESIZE_IS_DYNAMIC == 1)
      RETURN_FUNCTION(getpagesize());
#else
      return getpagesize();             /* note: currently this is not dynamic */
#endif
 
    case _SC_AIO_LISTIO_MAX:
#ifdef  AIO_LISTIO_MAX
      return AIO_LISTIO_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_AIO_MAX:
#ifdef  AIO_MAX
      return AIO_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_AIO_PRIO_DELTA_MAX:
#ifdef  AIO_PRIO_DELTA_MAX
      return AIO_PRIO_DELTA_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_DELAYTIMER_MAX:
#ifdef  DELAYTIMER_MAX
      return DELAYTIMER_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_MQ_OPEN_MAX:
#ifdef  MQ_OPEN_MAX
      return MQ_OPEN_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_MQ_PRIO_MAX:
#ifdef  MQ_PRIO_MAX
      return MQ_PRIO_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_RTSIG_MAX:
#ifdef  RTSIG_MAX
      return RTSIG_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_SEM_NSEMS_MAX:
#ifdef  SEM_NSEMS_MAX
      return SEM_NSEMS_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_SEM_VALUE_MAX:
#ifdef  SEM_VALUE_MAX
      return SEM_VALUE_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_SIGQUEUE_MAX:
#ifdef  SIGQUEUE_MAX
      return SIGQUEUE_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_TIMER_MAX:
#ifdef  TIMER_MAX
      return TIMER_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_BC_BASE_MAX:
#ifdef  BC_BASE_MAX
      return BC_BASE_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_BC_DIM_MAX:
#ifdef  BC_DIM_MAX
      return BC_DIM_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_BC_SCALE_MAX:
#ifdef  BC_SCALE_MAX
      return BC_SCALE_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_BC_STRING_MAX:
#ifdef  BC_STRING_MAX
      return BC_STRING_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_COLL_WEIGHTS_MAX:
#ifdef  COLL_WEIGHTS_MAX
      return COLL_WEIGHTS_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_EQUIV_CLASS_MAX:
#ifdef  EQUIV_CLASS_MAX
      return EQUIV_CLASS_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_EXPR_NEST_MAX:
#ifdef  EXPR_NEST_MAX
      return EXPR_NEST_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_LINE_MAX:
#ifdef  LINE_MAX
      return LINE_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_RE_DUP_MAX:
#ifdef  RE_DUP_MAX
      return RE_DUP_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_CHARCLASS_NAME_MAX:
#ifdef  CHARCLASS_NAME_MAX
      return CHARCLASS_NAME_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII:
#ifdef  _POSIX_PII
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII_XTI:
#ifdef  _POSIX_PII_XTI
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII_SOCKET:
#ifdef  _POSIX_PII_SOCKET
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII_INTERNET:
#ifdef  _POSIX_PII_INTERNET
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII_OSI:
#ifdef  _POSIX_PII_OSI
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_POLL:
#ifdef  _POSIX_POLL
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_SELECT:
#ifdef  _POSIX_SELECT
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_UIO_MAXIOV:
#ifdef  UIO_MAXIOV
      return UIO_MAXIOV;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII_INTERNET_STREAM:
#ifdef  _POSIX_PII_INTERNET_STREAM
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII_INTERNET_DGRAM:
#ifdef  _POSIX_PII_INTERNET_DGRAM
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII_OSI_COTS:
#ifdef  _POSIX_PII_OSI_COTS
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII_OSI_CLTS:
#ifdef  _POSIX_PII_OSI_CLTS
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_PII_OSI_M:
#ifdef  _POSIX_PII_OSI_M
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_T_IOV_MAX:
#ifdef  _T_IOV_MAX
      return _T_IOV_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_2_VERSION:
      return _POSIX2_VERSION;
 
    case _SC_2_C_BIND:
#ifdef  _POSIX2_C_BIND
      return _POSIX2_C_BIND;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_2_C_DEV:
#ifdef  _POSIX2_C_DEV
      return _POSIX2_C_DEV;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_2_C_VERSION:
#ifdef  _POSIX2_C_VERSION
      return _POSIX2_C_VERSION;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_2_FORT_DEV:
#ifdef  _POSIX2_FORT_DEV
      return _POSIX2_FORT_DEV;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_2_FORT_RUN:
#ifdef  _POSIX2_FORT_RUN
      return _POSIX2_FORT_RUN;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_2_LOCALEDEF:
#ifdef  _POSIX2_LOCALEDEF
      return _POSIX2_LOCALEDEF;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_2_SW_DEV:
#ifdef  _POSIX2_SW_DEV
      return _POSIX2_SW_DEV;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_2_CHAR_TERM:
#ifdef  _POSIX2_CHAR_TERM
      return _POSIX2_CHAR_TERM;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_2_UPE:
#ifdef  _POSIX2_UPE
      return _POSIX2_UPE;
#else
      RETURN_NEG_1;
#endif
 
      /* POSIX 1003.1c (POSIX Threads).  */
    case _SC_THREADS:
#ifdef  _POSIX_THREADS
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_SAFE_FUNCTIONS:
#ifdef  _POSIX_THREAD_SAFE_FUNCTIONS
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_GETGR_R_SIZE_MAX:
#ifdef  NSS_BUFLEN_GROUP
      return NSS_BUFLEN_GROUP;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_GETPW_R_SIZE_MAX:
#ifdef  NSS_BUFLEN_PASSWD
      return NSS_BUFLEN_PASSWD;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_LOGIN_NAME_MAX:
#ifdef  _POSIX_LOGIN_NAME_MAX
      return _POSIX_LOGIN_NAME_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_TTY_NAME_MAX:
#ifdef  _POSIX_TTY_NAME_MAX
      return _POSIX_TTY_NAME_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_DESTRUCTOR_ITERATIONS:
#ifdef  _POSIX_THREAD_DESTRUCTOR_ITERATIONS
      return _POSIX_THREAD_DESTRUCTOR_ITERATIONS;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_KEYS_MAX:
#ifdef  PTHREAD_KEYS_MAX
      return PTHREAD_KEYS_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_STACK_MIN:
#ifdef  PTHREAD_STACK_MIN
      return PTHREAD_STACK_MIN;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_THREADS_MAX:
#ifdef  PTHREAD_THREADS_MAX
      return PTHREAD_THREADS_MAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_ATTR_STACKADDR:
#ifdef  _POSIX_THREAD_ATTR_STACKADDR
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_ATTR_STACKSIZE:
#ifdef  _POSIX_THREAD_ATTR_STACKSIZE
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_PRIORITY_SCHEDULING:
#ifdef  _POSIX_THREAD_PRIORITY_SCHEDULING
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_PRIO_INHERIT:
#ifdef  _POSIX_THREAD_PRIO_INHERIT
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_PRIO_PROTECT:
#ifdef  _POSIX_THREAD_PRIO_PROTECT
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_THREAD_PROCESS_SHARED:
#ifdef  _POSIX_THREAD_PROCESS_SHARED
      return 1;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_NPROCESSORS_CONF:
#if 0
      RETURN_FUNCTION(get_nprocs_conf());
#else
      /* this is a hack.  for now always claim we have exactly one cpu */
      return 1;
#endif
 
    case _SC_NPROCESSORS_ONLN:
#if 0
      RETURN_FUNCTION(get_nprocs());
#else
      /* this is a hack.  for now always claim we have exactly one cpu */
      return 1;
#endif
 
    case _SC_PHYS_PAGES:
#if 0
      RETURN_FUNCTION(get_phys_pages());
#else
      RETURN_NEG_1;
#endif
 
    case _SC_AVPHYS_PAGES:
#if 0
      RETURN_FUNCTION(get_avphys_pages());
#else
      RETURN_NEG_1;
#endif
 
    case _SC_ATEXIT_MAX:
      return __UCLIBC_MAX_ATEXIT;
 
    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_XOPEN_VERSION:
      return _XOPEN_VERSION;
 
    case _SC_XOPEN_XCU_VERSION:
      return _XOPEN_XCU_VERSION;
 
    case _SC_XOPEN_UNIX:
      return _XOPEN_UNIX;
 
    case _SC_XOPEN_CRYPT:
#ifdef  _XOPEN_CRYPT
      return _XOPEN_CRYPT;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_XOPEN_ENH_I18N:
#ifdef  _XOPEN_ENH_I18N
      return _XOPEN_ENH_I18N;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_XOPEN_SHM:
#ifdef  _XOPEN_SHM
      return _XOPEN_SHM;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_XOPEN_XPG2:
#ifdef  _XOPEN_XPG2
      return _XOPEN_XPG2;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_XOPEN_XPG3:
#ifdef  _XOPEN_XPG3
      return _XOPEN_XPG3;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_XOPEN_XPG4:
#ifdef  _XOPEN_XPG4
      return _XOPEN_XPG4;
#else
      RETURN_NEG_1;
#endif
 
    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_NL_ARGMAX:
#ifdef  NL_ARGMAX
      return NL_ARGMAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_NL_LANGMAX:
#ifdef  NL_LANGMAX
      return NL_LANGMAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_NL_MSGMAX:
#ifdef  NL_MSGMAX
      return NL_MSGMAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_NL_NMAX:
#ifdef  NL_NMAX
      return NL_NMAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_NL_SETMAX:
#ifdef  NL_SETMAX
      return NL_SETMAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_NL_TEXTMAX:
#ifdef  NL_TEXTMAX
      return NL_TEXTMAX;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_XBS5_ILP32_OFF32:
#ifdef _XBS5_ILP32_OFF32
      return _XBS5_ILP32_OFF32;
#else
      RETURN_NEG_1;
#endif
    case _SC_XBS5_ILP32_OFFBIG:
#ifdef _XBS5_ILP32_OFFBIG
      return _XBS5_ILP32_OFFBIG;
#else
      RETURN_NEG_1;
#endif
    case _SC_XBS5_LP64_OFF64:
#ifdef _XBS5_LP64_OFF64
      return _XBS5_LP64_OFF64;
#else
      RETURN_NEG_1;
#endif
    case _SC_XBS5_LPBIG_OFFBIG:
#ifdef _XBS5_LPBIG_OFFBIG
      return _XBS5_LPBIG_OFFBIG;
#else
      RETURN_NEG_1;
#endif
 
    case _SC_XOPEN_LEGACY:
      return _XOPEN_LEGACY;
 
    case _SC_XOPEN_REALTIME:
#ifdef _XOPEN_REALTIME
      return _XOPEN_REALTIME;
#else
      RETURN_NEG_1;
#endif
    case _SC_XOPEN_REALTIME_THREADS:
#ifdef _XOPEN_REALTIME_THREADS
      return _XOPEN_REALTIME_THREADS;
#else
      RETURN_NEG_1;
#endif
    }
}
weak_alias(__sysconf, sysconf);
 

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[/] [or1k_old/] [trunk/] [linux/] [uClibc/] [libc/] [unistd/] [sysconf.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1325	phoenix	`/* Copyright (C) 1991, 93, 95, 96, 97, 2000 Free Software Foundation, Inc.`
2			`This file is part of the GNU C Library.`
3
4			`The GNU C Library is free software; you can redistribute it and/or`
5			`modify it under the terms of the GNU Library General Public License as`
6			`published by the Free Software Foundation; either version 2 of the`
7			`License, or (at your option) any later version.`
8
9			`The GNU C Library is distributed in the hope that it will be useful,`
10			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
11			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU`
12			`Library General Public License for more details.`
13
14			`You should have received a copy of the GNU Library General Public`
15			`License along with the GNU C Library; see the file COPYING.LIB. If not,`
16			`write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,`
17			`Boston, MA 02111-1307, USA. */`
18
19			`#define _XOPEN_SOURCE 500`
20			`#include <features.h>`
21			`#include <errno.h>`
22			`#include <limits.h>`
23			`#include <grp.h>`
24			`#include <pwd.h>`
25			`#include <stddef.h>`
26			`#include <stdio.h>`
27			`#include <stdlib.h>`
28			`#include <time.h>`
29			`#include <unistd.h>`
30			`#include <sys/sysinfo.h>`
31			`#include <sys/types.h>`
32			`#include <regex.h>`
33
34			`#ifndef __UCLIBC_CLK_TCK_CONST`
35			`#error __UCLIBC_CLK_TCK_CONST not defined!`
36			`#endif`
37
38			`extern int getpagesize (void);`
39			`extern int getdtablesize (void);`
40
41			`/***********************************************************************/`
42			`/*`
43			`* Manuel Novoa III Jan 2001`
44			`*`
45			`* On i386, the switch-based implementation generates 796 bytes of code.`
46			`* However, many of the return values are repeats. By collecting these`
47			`* repeats and moving to a table-based implementation, we generate 283`
48			`* bytes on i386 (-Os -fomit-frame-pointer).`
49			`*/`
50
51			`#ifdef _UCLIBC_GENERATE_SYSCONF_ARCH`
52			`/*`
53			`* Set some errno's so the auto-gen code knows what it is dealing with.`
54			`* 1) ENOSYS signifies that we're returning a default value.`
55			`* This is just extra info for development.`
56			`* 2) EISNAM signifies that the value returned varies at runtime.`
57			`*`
58			`* Option: GETPAGESIZE_IS_DYNAMIC`
59			`* The current implementation of getpagesize in uClibc returns`
60			`* a constant. The pagesize on the target arch should not vary,`
61			`* so it should be safe to set this as 0.`
62			`*/`
63			`#define RETURN_NEG_1 __set_errno(ENOSYS); return -1`
64			`#define RETURN_FUNCTION(f) __set_errno(EISNAM); return (long int) #f`
65			`#define GETPAGESIZE_IS_DYNAMIC 0`
66			`#else`
67			`#define RETURN_NEG_1 return -1`
68			`#define RETURN_FUNCTION(f) return f;`
69			`#endif /* _UCLIBC_GENERATE_SYSCONF_ARCH */`
70
71			`/* Get the value of the system variable NAME. */`
72			`long int __sysconf(int name)`
73			`{`
74			`switch (name)`
75			`{`
76			`default:`
77			`__set_errno(EINVAL);`
78			`return -1;`
79
80			`case _SC_ARG_MAX:`
81			`#ifdef ARG_MAX`
82			`return ARG_MAX;`
83			`#else`
84			`RETURN_NEG_1;`
85			`#endif`
86
87			`case _SC_CHILD_MAX:`
88			`#ifdef CHILD_MAX`
89			`return CHILD_MAX;`
90			`#else`
91			`RETURN_NEG_1;`
92			`#endif`
93
94			`case _SC_CLK_TCK:`
95			`/* Can't use CLK_TCK here since that calls __sysconf(_SC_CLK_TCK) */`
96			`return __UCLIBC_CLK_TCK_CONST;`
97
98			`case _SC_NGROUPS_MAX:`
99			`#ifdef NGROUPS_MAX`
100			`return NGROUPS_MAX;`
101			`#else`
102			`RETURN_NEG_1;`
103			`#endif`
104
105			`case _SC_OPEN_MAX:`
106			`#if 1`
107			`RETURN_FUNCTION(getdtablesize());`
108			`#else`
109			`RETURN_NEG_1;`
110			`#endif`
111
112			`case _SC_STREAM_MAX:`
113			`#ifdef STREAM_MAX`
114			`return STREAM_MAX;`
115			`#else`
116			`return FOPEN_MAX;`
117			`#endif`
118
119			`case _SC_TZNAME_MAX:`
120			`#if 0`
121			`RETURN_FUNCTION(tzname_max ());`
122			`#else`
123			`/* RETURN_NEG_1; */`
124			`return _POSIX_TZNAME_MAX;`
125			`#endif`
126
127			`case _SC_JOB_CONTROL:`
128			`#ifdef _POSIX_JOB_CONTROL`
129			`return 1;`
130			`#else`
131			`RETURN_NEG_1;`
132			`#endif`
133
134			`case _SC_SAVED_IDS:`
135			`#ifdef _POSIX_SAVED_IDS`
136			`return 1;`
137			`#else`
138			`RETURN_NEG_1;`
139			`#endif`
140
141			`case _SC_REALTIME_SIGNALS:`
142			`#ifdef _POSIX_REALTIME_SIGNALS`
143			`return 1;`
144			`#else`
145			`RETURN_NEG_1;`
146			`#endif`
147
148			`case _SC_PRIORITY_SCHEDULING:`
149			`#ifdef _POSIX_PRIORITY_SCHEDULING`
150			`return 1;`
151			`#else`
152			`RETURN_NEG_1;`
153			`#endif`
154
155			`case _SC_TIMERS:`
156			`#ifdef _POSIX_TIMERS`
157			`return 1;`
158			`#else`
159			`RETURN_NEG_1;`
160			`#endif`
161
162			`case _SC_ASYNCHRONOUS_IO:`
163			`#ifdef _POSIX_ASYNCHRONOUS_IO`
164			`return 1;`
165			`#else`
166			`RETURN_NEG_1;`
167			`#endif`
168
169			`case _SC_PRIORITIZED_IO:`
170			`#ifdef _POSIX_PRIORITIZED_IO`
171			`return 1;`
172			`#else`
173			`RETURN_NEG_1;`
174			`#endif`
175
176			`case _SC_SYNCHRONIZED_IO:`
177			`#ifdef _POSIX_SYNCHRONIZED_IO`
178			`return 1;`
179			`#else`
180			`RETURN_NEG_1;`
181			`#endif`
182
183			`case _SC_FSYNC:`
184			`#ifdef _POSIX_FSYNC`
185			`return 1;`
186			`#else`
187			`RETURN_NEG_1;`
188			`#endif`
189
190			`case _SC_MAPPED_FILES:`
191			`#ifdef _POSIX_MAPPED_FILES`
192			`return 1;`
193			`#else`
194			`RETURN_NEG_1;`
195			`#endif`
196
197			`case _SC_MEMLOCK:`
198			`#ifdef _POSIX_MEMLOCK`
199			`return 1;`
200			`#else`
201			`RETURN_NEG_1;`
202			`#endif`
203
204			`case _SC_MEMLOCK_RANGE:`
205			`#ifdef _POSIX_MEMLOCK_RANGE`
206			`return 1;`
207			`#else`
208			`RETURN_NEG_1;`
209			`#endif`
210
211			`case _SC_MEMORY_PROTECTION:`
212			`#ifdef _POSIX_MEMORY_PROTECTION`
213			`return 1;`
214			`#else`
215			`RETURN_NEG_1;`
216			`#endif`
217
218			`case _SC_MESSAGE_PASSING:`
219			`#ifdef _POSIX_MESSAGE_PASSING`
220			`return 1;`
221			`#else`
222			`RETURN_NEG_1;`
223			`#endif`
224
225			`case _SC_SEMAPHORES:`
226			`#ifdef _POSIX_SEMAPHORES`
227			`return 1;`
228			`#else`
229			`RETURN_NEG_1;`
230			`#endif`
231
232			`case _SC_SHARED_MEMORY_OBJECTS:`
233			`#ifdef _POSIX_SHARED_MEMORY_OBJECTS`
234			`return 1;`
235			`#else`
236			`RETURN_NEG_1;`
237			`#endif`
238
239			`case _SC_VERSION:`
240			`return _POSIX_VERSION;`
241
242			`case _SC_PAGESIZE:`
243			`#if defined(GETPAGESIZE_IS_DYNAMIC) && (GETPAGESIZE_IS_DYNAMIC == 1)`
244			`RETURN_FUNCTION(getpagesize());`
245			`#else`
246			`return getpagesize(); /* note: currently this is not dynamic */`
247			`#endif`
248
249			`case _SC_AIO_LISTIO_MAX:`
250			`#ifdef AIO_LISTIO_MAX`
251			`return AIO_LISTIO_MAX;`
252			`#else`
253			`RETURN_NEG_1;`
254			`#endif`
255
256			`case _SC_AIO_MAX:`
257			`#ifdef AIO_MAX`
258			`return AIO_MAX;`
259			`#else`
260			`RETURN_NEG_1;`
261			`#endif`
262
263			`case _SC_AIO_PRIO_DELTA_MAX:`
264			`#ifdef AIO_PRIO_DELTA_MAX`
265			`return AIO_PRIO_DELTA_MAX;`
266			`#else`
267			`RETURN_NEG_1;`
268			`#endif`
269
270			`case _SC_DELAYTIMER_MAX:`
271			`#ifdef DELAYTIMER_MAX`
272			`return DELAYTIMER_MAX;`
273			`#else`
274			`RETURN_NEG_1;`
275			`#endif`
276
277			`case _SC_MQ_OPEN_MAX:`
278			`#ifdef MQ_OPEN_MAX`
279			`return MQ_OPEN_MAX;`
280			`#else`
281			`RETURN_NEG_1;`
282			`#endif`
283
284			`case _SC_MQ_PRIO_MAX:`
285			`#ifdef MQ_PRIO_MAX`
286			`return MQ_PRIO_MAX;`
287			`#else`
288			`RETURN_NEG_1;`
289			`#endif`
290
291			`case _SC_RTSIG_MAX:`
292			`#ifdef RTSIG_MAX`
293			`return RTSIG_MAX;`
294			`#else`
295			`RETURN_NEG_1;`
296			`#endif`
297
298			`case _SC_SEM_NSEMS_MAX:`
299			`#ifdef SEM_NSEMS_MAX`
300			`return SEM_NSEMS_MAX;`
301			`#else`
302			`RETURN_NEG_1;`
303			`#endif`
304
305			`case _SC_SEM_VALUE_MAX:`
306			`#ifdef SEM_VALUE_MAX`
307			`return SEM_VALUE_MAX;`
308			`#else`
309			`RETURN_NEG_1;`
310			`#endif`
311
312			`case _SC_SIGQUEUE_MAX:`
313			`#ifdef SIGQUEUE_MAX`
314			`return SIGQUEUE_MAX;`
315			`#else`
316			`RETURN_NEG_1;`
317			`#endif`
318
319			`case _SC_TIMER_MAX:`
320			`#ifdef TIMER_MAX`
321			`return TIMER_MAX;`
322			`#else`
323			`RETURN_NEG_1;`
324			`#endif`
325
326			`case _SC_BC_BASE_MAX:`
327			`#ifdef BC_BASE_MAX`
328			`return BC_BASE_MAX;`
329			`#else`
330			`RETURN_NEG_1;`
331			`#endif`
332
333			`case _SC_BC_DIM_MAX:`
334			`#ifdef BC_DIM_MAX`
335			`return BC_DIM_MAX;`
336			`#else`
337			`RETURN_NEG_1;`
338			`#endif`
339
340			`case _SC_BC_SCALE_MAX:`
341			`#ifdef BC_SCALE_MAX`
342			`return BC_SCALE_MAX;`
343			`#else`
344			`RETURN_NEG_1;`
345			`#endif`
346
347			`case _SC_BC_STRING_MAX:`
348			`#ifdef BC_STRING_MAX`
349			`return BC_STRING_MAX;`
350			`#else`
351			`RETURN_NEG_1;`
352			`#endif`
353
354			`case _SC_COLL_WEIGHTS_MAX:`
355			`#ifdef COLL_WEIGHTS_MAX`
356			`return COLL_WEIGHTS_MAX;`
357			`#else`
358			`RETURN_NEG_1;`
359			`#endif`
360
361			`case _SC_EQUIV_CLASS_MAX:`
362			`#ifdef EQUIV_CLASS_MAX`
363			`return EQUIV_CLASS_MAX;`
364			`#else`
365			`RETURN_NEG_1;`
366			`#endif`
367
368			`case _SC_EXPR_NEST_MAX:`
369			`#ifdef EXPR_NEST_MAX`
370			`return EXPR_NEST_MAX;`
371			`#else`
372			`RETURN_NEG_1;`
373			`#endif`
374
375			`case _SC_LINE_MAX:`
376			`#ifdef LINE_MAX`
377			`return LINE_MAX;`
378			`#else`
379			`RETURN_NEG_1;`
380			`#endif`
381
382			`case _SC_RE_DUP_MAX:`
383			`#ifdef RE_DUP_MAX`
384			`return RE_DUP_MAX;`
385			`#else`
386			`RETURN_NEG_1;`
387			`#endif`
388
389			`case _SC_CHARCLASS_NAME_MAX:`
390			`#ifdef CHARCLASS_NAME_MAX`
391			`return CHARCLASS_NAME_MAX;`
392			`#else`
393			`RETURN_NEG_1;`
394			`#endif`
395
396			`case _SC_PII:`
397			`#ifdef _POSIX_PII`
398			`return 1;`
399			`#else`
400			`RETURN_NEG_1;`
401			`#endif`
402
403			`case _SC_PII_XTI:`
404			`#ifdef _POSIX_PII_XTI`
405			`return 1;`
406			`#else`
407			`RETURN_NEG_1;`
408			`#endif`
409
410			`case _SC_PII_SOCKET:`
411			`#ifdef _POSIX_PII_SOCKET`
412			`return 1;`
413			`#else`
414			`RETURN_NEG_1;`
415			`#endif`
416
417			`case _SC_PII_INTERNET:`
418			`#ifdef _POSIX_PII_INTERNET`
419			`return 1;`
420			`#else`
421			`RETURN_NEG_1;`
422			`#endif`
423
424			`case _SC_PII_OSI:`
425			`#ifdef _POSIX_PII_OSI`
426			`return 1;`
427			`#else`
428			`RETURN_NEG_1;`
429			`#endif`
430
431			`case _SC_POLL:`
432			`#ifdef _POSIX_POLL`
433			`return 1;`
434			`#else`
435			`RETURN_NEG_1;`
436			`#endif`
437
438			`case _SC_SELECT:`
439			`#ifdef _POSIX_SELECT`
440			`return 1;`
441			`#else`
442			`RETURN_NEG_1;`
443			`#endif`
444
445			`case _SC_UIO_MAXIOV:`
446			`#ifdef UIO_MAXIOV`
447			`return UIO_MAXIOV;`
448			`#else`
449			`RETURN_NEG_1;`
450			`#endif`
451
452			`case _SC_PII_INTERNET_STREAM:`
453			`#ifdef _POSIX_PII_INTERNET_STREAM`
454			`return 1;`
455			`#else`
456			`RETURN_NEG_1;`
457			`#endif`
458
459			`case _SC_PII_INTERNET_DGRAM:`
460			`#ifdef _POSIX_PII_INTERNET_DGRAM`
461			`return 1;`
462			`#else`
463			`RETURN_NEG_1;`
464			`#endif`
465
466			`case _SC_PII_OSI_COTS:`
467			`#ifdef _POSIX_PII_OSI_COTS`
468			`return 1;`
469			`#else`
470			`RETURN_NEG_1;`
471			`#endif`
472
473			`case _SC_PII_OSI_CLTS:`
474			`#ifdef _POSIX_PII_OSI_CLTS`
475			`return 1;`
476			`#else`
477			`RETURN_NEG_1;`
478			`#endif`
479
480			`case _SC_PII_OSI_M:`
481			`#ifdef _POSIX_PII_OSI_M`
482			`return 1;`
483			`#else`
484			`RETURN_NEG_1;`
485			`#endif`
486
487			`case _SC_T_IOV_MAX:`
488			`#ifdef _T_IOV_MAX`
489			`return _T_IOV_MAX;`
490			`#else`
491			`RETURN_NEG_1;`
492			`#endif`
493
494			`case _SC_2_VERSION:`
495			`return _POSIX2_VERSION;`
496
497			`case _SC_2_C_BIND:`
498			`#ifdef _POSIX2_C_BIND`
499			`return _POSIX2_C_BIND;`
500			`#else`
501			`RETURN_NEG_1;`
502			`#endif`
503
504			`case _SC_2_C_DEV:`
505			`#ifdef _POSIX2_C_DEV`
506			`return _POSIX2_C_DEV;`
507			`#else`
508			`RETURN_NEG_1;`
509			`#endif`
510
511			`case _SC_2_C_VERSION:`
512			`#ifdef _POSIX2_C_VERSION`
513			`return _POSIX2_C_VERSION;`
514			`#else`
515			`RETURN_NEG_1;`
516			`#endif`
517
518			`case _SC_2_FORT_DEV:`
519			`#ifdef _POSIX2_FORT_DEV`
520			`return _POSIX2_FORT_DEV;`
521			`#else`
522			`RETURN_NEG_1;`
523			`#endif`
524
525			`case _SC_2_FORT_RUN:`
526			`#ifdef _POSIX2_FORT_RUN`
527			`return _POSIX2_FORT_RUN;`
528			`#else`
529			`RETURN_NEG_1;`
530			`#endif`
531
532			`case _SC_2_LOCALEDEF:`
533			`#ifdef _POSIX2_LOCALEDEF`
534			`return _POSIX2_LOCALEDEF;`
535			`#else`
536			`RETURN_NEG_1;`
537			`#endif`
538
539			`case _SC_2_SW_DEV:`
540			`#ifdef _POSIX2_SW_DEV`
541			`return _POSIX2_SW_DEV;`
542			`#else`
543			`RETURN_NEG_1;`
544			`#endif`
545
546			`case _SC_2_CHAR_TERM:`
547			`#ifdef _POSIX2_CHAR_TERM`
548			`return _POSIX2_CHAR_TERM;`
549			`#else`
550			`RETURN_NEG_1;`
551			`#endif`
552
553			`case _SC_2_UPE:`
554			`#ifdef _POSIX2_UPE`
555			`return _POSIX2_UPE;`
556			`#else`
557			`RETURN_NEG_1;`
558			`#endif`
559
560			`/* POSIX 1003.1c (POSIX Threads). */`
561			`case _SC_THREADS:`
562			`#ifdef _POSIX_THREADS`
563			`return 1;`
564			`#else`
565			`RETURN_NEG_1;`
566			`#endif`
567
568			`case _SC_THREAD_SAFE_FUNCTIONS:`
569			`#ifdef _POSIX_THREAD_SAFE_FUNCTIONS`
570			`return 1;`
571			`#else`
572			`RETURN_NEG_1;`
573			`#endif`
574
575			`case _SC_GETGR_R_SIZE_MAX:`
576			`#ifdef NSS_BUFLEN_GROUP`
577			`return NSS_BUFLEN_GROUP;`
578			`#else`
579			`RETURN_NEG_1;`
580			`#endif`
581
582			`case _SC_GETPW_R_SIZE_MAX:`
583			`#ifdef NSS_BUFLEN_PASSWD`
584			`return NSS_BUFLEN_PASSWD;`
585			`#else`
586			`RETURN_NEG_1;`
587			`#endif`
588
589			`case _SC_LOGIN_NAME_MAX:`
590			`#ifdef _POSIX_LOGIN_NAME_MAX`
591			`return _POSIX_LOGIN_NAME_MAX;`
592			`#else`
593			`RETURN_NEG_1;`
594			`#endif`
595
596			`case _SC_TTY_NAME_MAX:`
597			`#ifdef _POSIX_TTY_NAME_MAX`
598			`return _POSIX_TTY_NAME_MAX;`
599			`#else`
600			`RETURN_NEG_1;`
601			`#endif`
602
603			`case _SC_THREAD_DESTRUCTOR_ITERATIONS:`
604			`#ifdef _POSIX_THREAD_DESTRUCTOR_ITERATIONS`
605			`return _POSIX_THREAD_DESTRUCTOR_ITERATIONS;`
606			`#else`
607			`RETURN_NEG_1;`
608			`#endif`
609
610			`case _SC_THREAD_KEYS_MAX:`
611			`#ifdef PTHREAD_KEYS_MAX`
612			`return PTHREAD_KEYS_MAX;`
613			`#else`
614			`RETURN_NEG_1;`
615			`#endif`
616
617			`case _SC_THREAD_STACK_MIN:`
618			`#ifdef PTHREAD_STACK_MIN`
619			`return PTHREAD_STACK_MIN;`
620			`#else`
621			`RETURN_NEG_1;`
622			`#endif`
623
624			`case _SC_THREAD_THREADS_MAX:`
625			`#ifdef PTHREAD_THREADS_MAX`
626			`return PTHREAD_THREADS_MAX;`
627			`#else`
628			`RETURN_NEG_1;`
629			`#endif`
630
631			`case _SC_THREAD_ATTR_STACKADDR:`
632			`#ifdef _POSIX_THREAD_ATTR_STACKADDR`
633			`return 1;`
634			`#else`
635			`RETURN_NEG_1;`
636			`#endif`
637
638			`case _SC_THREAD_ATTR_STACKSIZE:`
639			`#ifdef _POSIX_THREAD_ATTR_STACKSIZE`
640			`return 1;`
641			`#else`
642			`RETURN_NEG_1;`
643			`#endif`
644
645			`case _SC_THREAD_PRIORITY_SCHEDULING:`
646			`#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING`
647			`return 1;`
648			`#else`
649			`RETURN_NEG_1;`
650			`#endif`
651
652			`case _SC_THREAD_PRIO_INHERIT:`
653			`#ifdef _POSIX_THREAD_PRIO_INHERIT`
654			`return 1;`
655			`#else`
656			`RETURN_NEG_1;`
657			`#endif`
658
659			`case _SC_THREAD_PRIO_PROTECT:`
660			`#ifdef _POSIX_THREAD_PRIO_PROTECT`
661			`return 1;`
662			`#else`
663			`RETURN_NEG_1;`
664			`#endif`
665
666			`case _SC_THREAD_PROCESS_SHARED:`
667			`#ifdef _POSIX_THREAD_PROCESS_SHARED`
668			`return 1;`
669			`#else`
670			`RETURN_NEG_1;`
671			`#endif`
672
673			`case _SC_NPROCESSORS_CONF:`
674			`#if 0`
675			`RETURN_FUNCTION(get_nprocs_conf());`
676			`#else`
677			`/* this is a hack. for now always claim we have exactly one cpu */`
678			`return 1;`
679			`#endif`
680
681			`case _SC_NPROCESSORS_ONLN:`
682			`#if 0`
683			`RETURN_FUNCTION(get_nprocs());`
684			`#else`
685			`/* this is a hack. for now always claim we have exactly one cpu */`
686			`return 1;`
687			`#endif`
688
689			`case _SC_PHYS_PAGES:`
690			`#if 0`
691			`RETURN_FUNCTION(get_phys_pages());`
692			`#else`
693			`RETURN_NEG_1;`
694			`#endif`
695
696			`case _SC_AVPHYS_PAGES:`
697			`#if 0`
698			`RETURN_FUNCTION(get_avphys_pages());`
699			`#else`
700			`RETURN_NEG_1;`
701			`#endif`
702
703			`case _SC_ATEXIT_MAX:`
704			`return __UCLIBC_MAX_ATEXIT;`
705
706			`case _SC_PASS_MAX:`
707			`/* We have no limit but since the return value might be used to`
708			`allocate a buffer we restrict the value. */`
709			`return BUFSIZ;`
710
711			`case _SC_XOPEN_VERSION:`
712			`return _XOPEN_VERSION;`
713
714			`case _SC_XOPEN_XCU_VERSION:`
715			`return _XOPEN_XCU_VERSION;`
716
717			`case _SC_XOPEN_UNIX:`
718			`return _XOPEN_UNIX;`
719
720			`case _SC_XOPEN_CRYPT:`
721			`#ifdef _XOPEN_CRYPT`
722			`return _XOPEN_CRYPT;`
723			`#else`
724			`RETURN_NEG_1;`
725			`#endif`
726
727			`case _SC_XOPEN_ENH_I18N:`
728			`#ifdef _XOPEN_ENH_I18N`
729			`return _XOPEN_ENH_I18N;`
730			`#else`
731			`RETURN_NEG_1;`
732			`#endif`
733
734			`case _SC_XOPEN_SHM:`
735			`#ifdef _XOPEN_SHM`
736			`return _XOPEN_SHM;`
737			`#else`
738			`RETURN_NEG_1;`
739			`#endif`
740
741			`case _SC_XOPEN_XPG2:`
742			`#ifdef _XOPEN_XPG2`
743			`return _XOPEN_XPG2;`
744			`#else`
745			`RETURN_NEG_1;`
746			`#endif`
747
748			`case _SC_XOPEN_XPG3:`
749			`#ifdef _XOPEN_XPG3`
750			`return _XOPEN_XPG3;`
751			`#else`
752			`RETURN_NEG_1;`
753			`#endif`
754
755			`case _SC_XOPEN_XPG4:`
756			`#ifdef _XOPEN_XPG4`
757			`return _XOPEN_XPG4;`
758			`#else`
759			`RETURN_NEG_1;`
760			`#endif`
761
762			`case _SC_CHAR_BIT:`
763			`return CHAR_BIT;`
764
765			`case _SC_CHAR_MAX:`
766			`return CHAR_MAX;`
767
768			`case _SC_CHAR_MIN:`
769			`return CHAR_MIN;`
770
771			`case _SC_INT_MAX:`
772			`return INT_MAX;`
773
774			`case _SC_INT_MIN:`
775			`return INT_MIN;`
776
777			`case _SC_LONG_BIT:`
778			`return sizeof (long int) * CHAR_BIT;`
779
780			`case _SC_WORD_BIT:`
781			`return sizeof (int) * CHAR_BIT;`
782
783			`case _SC_MB_LEN_MAX:`
784			`return MB_LEN_MAX;`
785
786			`case _SC_NZERO:`
787			`return NZERO;`
788
789			`case _SC_SSIZE_MAX:`
790			`return _POSIX_SSIZE_MAX;`
791
792			`case _SC_SCHAR_MAX:`
793			`return SCHAR_MAX;`
794
795			`case _SC_SCHAR_MIN:`
796			`return SCHAR_MIN;`
797
798			`case _SC_SHRT_MAX:`
799			`return SHRT_MAX;`
800
801			`case _SC_SHRT_MIN:`
802			`return SHRT_MIN;`
803
804			`case _SC_UCHAR_MAX:`
805			`return UCHAR_MAX;`
806
807			`case _SC_UINT_MAX:`
808			`return UINT_MAX;`
809
810			`case _SC_ULONG_MAX:`
811			`return ULONG_MAX;`
812
813			`case _SC_USHRT_MAX:`
814			`return USHRT_MAX;`
815
816			`case _SC_NL_ARGMAX:`
817			`#ifdef NL_ARGMAX`
818			`return NL_ARGMAX;`
819			`#else`
820			`RETURN_NEG_1;`
821			`#endif`
822
823			`case _SC_NL_LANGMAX:`
824			`#ifdef NL_LANGMAX`
825			`return NL_LANGMAX;`
826			`#else`
827			`RETURN_NEG_1;`
828			`#endif`
829
830			`case _SC_NL_MSGMAX:`
831			`#ifdef NL_MSGMAX`
832			`return NL_MSGMAX;`
833			`#else`
834			`RETURN_NEG_1;`
835			`#endif`
836
837			`case _SC_NL_NMAX:`
838			`#ifdef NL_NMAX`
839			`return NL_NMAX;`
840			`#else`
841			`RETURN_NEG_1;`
842			`#endif`
843
844			`case _SC_NL_SETMAX:`
845			`#ifdef NL_SETMAX`
846			`return NL_SETMAX;`
847			`#else`
848			`RETURN_NEG_1;`
849			`#endif`
850
851			`case _SC_NL_TEXTMAX:`
852			`#ifdef NL_TEXTMAX`
853			`return NL_TEXTMAX;`
854			`#else`
855			`RETURN_NEG_1;`
856			`#endif`
857
858			`case _SC_XBS5_ILP32_OFF32:`
859			`#ifdef _XBS5_ILP32_OFF32`
860			`return _XBS5_ILP32_OFF32;`
861			`#else`
862			`RETURN_NEG_1;`
863			`#endif`
864			`case _SC_XBS5_ILP32_OFFBIG:`
865			`#ifdef _XBS5_ILP32_OFFBIG`
866			`return _XBS5_ILP32_OFFBIG;`
867			`#else`
868			`RETURN_NEG_1;`
869			`#endif`
870			`case _SC_XBS5_LP64_OFF64:`
871			`#ifdef _XBS5_LP64_OFF64`
872			`return _XBS5_LP64_OFF64;`
873			`#else`
874			`RETURN_NEG_1;`
875			`#endif`
876			`case _SC_XBS5_LPBIG_OFFBIG:`
877			`#ifdef _XBS5_LPBIG_OFFBIG`
878			`return _XBS5_LPBIG_OFFBIG;`
879			`#else`
880			`RETURN_NEG_1;`
881			`#endif`
882
883			`case _SC_XOPEN_LEGACY:`
884			`return _XOPEN_LEGACY;`
885
886			`case _SC_XOPEN_REALTIME:`
887			`#ifdef _XOPEN_REALTIME`
888			`return _XOPEN_REALTIME;`
889			`#else`
890			`RETURN_NEG_1;`
891			`#endif`
892			`case _SC_XOPEN_REALTIME_THREADS:`
893			`#ifdef _XOPEN_REALTIME_THREADS`
894			`return _XOPEN_REALTIME_THREADS;`
895			`#else`
896			`RETURN_NEG_1;`
897			`#endif`
898			`}`
899			`}`
900			`weak_alias(__sysconf, sysconf);`
901