sysdeps/stub/sysconf.c

   1 /* Copyright (C) 1991, 1993, 1995, 1996 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
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <ansidecl.h>
  20 #include <errno.h>
  21 #include <unistd.h>
  22 #include <time.h>
  23 #include <limits.h>
  24
  25
  26 /* Get the value of the system variable NAME.  */
  27 long int
  28 DEFUN(__sysconf, (name), int name)
  29 {
  30   switch (name)
  31     {
  32     default:
  33       errno = EINVAL;
  34       return -1;
  35
  36     case _SC_TZNAME_MAX:
  37       return __tzname_max ();
  38
  39     case _SC_ARG_MAX:
  40     case _SC_CHILD_MAX:
  41     case _SC_CLK_TCK:
  42     case _SC_NGROUPS_MAX:
  43     case _SC_OPEN_MAX:
  44     case _SC_JOB_CONTROL:
  45     case _SC_SAVED_IDS:
  46     case _SC_REALTIME_SIGNALS:
  47     case _SC_PRIORITY_SCHEDULING:
  48     case _SC_TIMERS:
  49     case _SC_ASYNCHRONOUS_IO:
  50     case _SC_PRIORITIZED_IO:
  51     case _SC_SYNCHRONIZED_IO:
  52     case _SC_FSYNC:
  53     case _SC_MAPPED_FILES:
  54     case _SC_MEMLOCK:
  55     case _SC_MEMLOCK_RANGE:
  56     case _SC_MEMORY_PROTECTION:
  57     case _SC_MESSAGE_PASSING:
  58     case _SC_SEMAPHORES:
  59     case _SC_SHARED_MEMORY_OBJECTS:
  60     case _SC_VERSION:
  61
  62     case _SC_PII:
  63     case _SC_PII_XTI:
  64     case _SC_PII_SOCKET:
  65     case _SC_PII_OSI:
  66     case _SC_POLL:
  67     case _SC_SELECT:
  68     case _SC_UIO_MAXIOV:
  69     case _SC_PII_INTERNET_STREAM:
  70     case _SC_PII_INTERNET_DGRAM:
  71     case _SC_PII_OSI_COTS:
  72     case _SC_PII_OSI_CLTS:
  73     case _SC_PII_OSI_M:
  74     case _SC_T_IOV_MAX:
  75
  76     case _SC_BC_BASE_MAX:
  77     case _SC_BC_DIM_MAX:
  78     case _SC_BC_SCALE_MAX:
  79     case _SC_BC_STRING_MAX:
  80     case _SC_EQUIV_CLASS_MAX:
  81     case _SC_EXPR_NEST_MAX:
  82     case _SC_LINE_MAX:
  83     case _SC_RE_DUP_MAX:
  84     case _SC_CHARCLASS_NAME_MAX:
  85     case _SC_2_VERSION:
  86     case _SC_2_C_BIND:
  87     case _SC_2_C_DEV:
  88     case _SC_2_FORT_DEV:
  89     case _SC_2_SW_DEV:
  90
  91       break;
  92     }
  93
  94   errno = ENOSYS;
  95   return -1;
  96 }
  97
  98 weak_alias (__sysconf, sysconf)
  99
 100 stub_warning (sysconf)