mirror/glibc
2
0
Fork 0
mirror of git://sourceware.org/git/glibc.git synced 2024-12-15 04:20:28 +08:00
Code Issues Packages Projects Releases Wiki Activity
7b3547eb0f
glibc/sysdeps/unix/sysv/linux/sysconf.c
Roland McGrath 7b3547eb0f Sun Apr 28 14:14:35 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> 
* sysdeps/unix/sysv/linux/i386/Makefile: New file.

Wed Apr 24 17:35:30  Ulrich Drepper  <drepper@cygnus.com>

	* inet/netinet/in.h, socket/sys/socket.h: Move to
	sysdeps/generic/netinet/in.h, sysdeps/generic/sys/socket.h.
	* netinet/in.h, sys/socket.h: Remove file.

	* misc/Makefile (routines): Add fdatasync.

	* posix/Makefile (headers): Add sched.h.
	(routines): Add nanosleep, sched_setp, sched_getp, sched_sets,
	sched_gets, sched_yield, sched_primax, sched_primin, sched_rr_gi.

	* posix/getconf.c (vars): Add entries for _POSIX_REALTIME_SIGNALS,
	_POSIX_PRIORITY_SCHEDULING, _POSIX_TIMERS, _POSIX_ASYNCHRONOUS_IO,
	_POSIX_PRIORITIZED_IO, _POSIX_SYNCHRONIZED_IO, _POSIX_FSYNC,
	_POSIX_MAPPED_FILES, _POSIX_MEMLOCK, _POSIX_MEMLOCK_RANGE,
	_POSIX_MEMORY_PROTECTION, _POSIX_MESSAGE_PASSING,
	_POSIX_SEMAPHORES, _POSIX_SHARED_MEMORY_OBJECTS.

	* posix/sched.h: New file.  Header for POSIX scheduling interface.

	* posix/unistd.h: Describe options from POSIX.4.
	Add declaration of fdatasync.

	* sysdeps/generic/confname.h: Add definition for
	 _SC_REALTIME_SIGNALS, _SC_PRIORITY_SCHEDULING, _SC_TIMERS,
	_SC_ASYNCHRONOUS_IO, _SC_PRIORITIZED_IO, _SC_SYNCHRONIZED_IO,
	_SC_FSYNC, _SC_MAPPED_FILES, _SC_MEMLOCK, _SC_MEMLOCK_RANGE,
	_SC_MEMORY_PROTECTION, _SC_MESSAGE_PASSING,
	_SC_SEMAPHORES, _SC_SHARED_MEMORY_OBJECTS.

	* sysdeps/generic/fdatasync.c: New file.  Default implementation
	simply uses fsync.

	* sysdeps/generic/netinit/in.h: Moved to here from inet/netinet/in.h.

	* sysdeps/generic/schedbits.h: New file.  System dependent
	defintion for POSIX.4 scheduling interface.

	* sysdeps/generic/sys/socket.h: Moved to here from socket/sys/socket.h.

	* sysdeps/stub/nanosleep.c, sysdeps/stub/sched_getp.c,
	sysdeps/stub/sched_gets.c, sysdeps/stub/sched_primax.c,
	sysdeps/stub/sched_primin.c, sysdeps/stub/sched_rr_gi.c,
	sysdeps/stub/sched_setp.c, sysdeps/stub/sched_sets.c,
	sysdeps/stub/sched_yield.c: New file:  Stub implementation
	for systems missing these POSIX.4 system calls.

	* sysdeps/unix/sysv/linux/gnu/types.h,
	sysdeps/unix/sysv/linux/ioctls.h: Use kernel header for
	data type definitions.

	* sysdeps/unix/sysv/linux/netinet/in.h: New file.  Linux
	specific version.

	* sysdeps/unix/sysv/linux/posix_opt.h: New file.  Define POSIX
	options applicable for Linux.

	* sysdeps/unix/sysv/linux/syscalls.list: Add definitions for
	fdatasync, nanosleep, sched_setparam, sched_getparam,
	sched_setscheduler, sched_getscheduler, sched_yield,
	sched_get_priority_max, sched_get_priority_min, and
	sched_rr_get_interval.

	* sysdeps/unix/sysv/linux/sysconf.c: Add handling of POSIX.4
	options.

	* sysdeps/unix/sysv/linux/termbits.h: Use kernel headers.

	* time/sys/time.h: Remove definition of `struct timespec'.

	* time/time.h (struct timespec): Move definition to here.

 	variable, LUCKY, to use instead of setting D to -1 (which fouls
1996-04-28 18:25:22 +00:00

298 lines
5.0 KiB
C
Raw Blame History

/* Copyright (C) 1991, 1993, 1995, 1996 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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <errno.h>
#include <limits.h>
#include <unistd.h>
#include <stddef.h>
#include <stdio.h>
#include <time.h>
extern size_t EXFUN(__getpagesize, (NOARGS));
/* Get the value of the system variable NAME. */
long int
DEFUN(__sysconf, (name), int name)
{
switch (name)
{
default:
errno = EINVAL;
return -1;
case _SC_ARG_MAX:
#ifdef ARG_MAX
return ARG_MAX;
#else
return -1;
#endif
case _SC_CHILD_MAX:
#ifdef CHILD_MAX
return CHILD_MAX;
#else
return -1;
#endif
case _SC_CLK_TCK:
#ifdef CLK_TCK
return CLK_TCK;
#else
return 60;
#endif
case _SC_NGROUPS_MAX:
#ifdef NGROUPS_MAX
return NGROUPS_MAX;
#else
return -1;
#endif
case _SC_OPEN_MAX:
return OPEN_MAX;
case _SC_STREAM_MAX:
#ifdef STREAM_MAX
return STREAM_MAX;
#else
return FOPEN_MAX;
#endif
case _SC_TZNAME_MAX:
return __tzname_max ();
case _SC_JOB_CONTROL:
#ifdef _POSIX_JOB_CONTROL
return 1;
#else
return -1;
#endif
case _SC_SAVED_IDS:
#ifdef _POSIX_SAVED_IDS
return 1;
#else
return -1;
#endif
case _SC_REALTIME_SIGNALS:
#ifdef _POSIX_REALTIME_SIGNALS
return 1;
#else
return -1;
#endif
case _SC_PRIORITY_SCHEDULING:
#ifdef _POSIX_PRIORITY_SCHEDULING
return 1;
#else
return -1;
#endif
case _SC_TIMERS:
#ifdef _POSIX_TIMERS
return 1;
#else
return -1;
#endif
case _SC_ASYNCHRONOUS_IO:
#ifdef _POSIX_ASYNCHRONOUS_IO
return 1;
#else
return -1;
#endif
case _SC_PRIORITIZED_IO:
#ifdef _POSIX_PRIORITIZED_IO
return 1;
#else
return -1;
#endif
case _SC_SYNCHRONIZED_IO:
#ifdef _POSIX_SYNCHRONIZED_IO
return 1;
#else
return -1;
#endif
case _SC_FSYNC:
#ifdef _POSIX_FSYNC
return 1;
#else
return -1;
#endif
case _SC_MAPPED_FILES:
#ifdef _POSIX_MAPPED_FILES
return 1;
#else
return -1;
#endif
case _SC_MEMLOCK:
#ifdef _POSIX_MEMLOCK
return 1;
#else
return -1;
#endif
case _SC_MEMLOCK_RANGE:
#ifdef _POSIX_MEMLOCK_RANGE
return 1;
#else
return -1;
#endif
case _SC_MEMORY_PROTECTION:
#ifdef _POSIX_MEMORY_PROTECTION
return 1;
#else
return -1;
#endif
case _SC_MESSAGE_PASSING:
#ifdef _POSIX_MESSAGE_PASSING
return 1;
#else
return -1;
#endif
case _SC_SEMAPHORES:
#ifdef _POSIX_SEMAPHORES
return 1;
#else
return -1;
#endif
case _SC_SHARED_MEMORY_OBJECTS:
#ifdef _POSIX_SHARED_MEMORY_OBJECTS
return 1;
#else
return -1;
#endif
case _SC_VERSION:
return _POSIX_VERSION;
case _SC_PAGESIZE:
return __getpagesize ();
case _SC_BC_BASE_MAX:
#ifdef BC_BASE_MAX
return BC_BASE_MAX;
#else
return -1;
#endif
case _SC_BC_DIM_MAX:
#ifdef BC_DIM_MAX
return BC_DIM_MAX;
#else
return -1;
#endif
case _SC_BC_SCALE_MAX:
#ifdef BC_SCALE_MAX
return BC_SCALE_MAX;
#else
return -1;
#endif
case _SC_BC_STRING_MAX:
#ifdef BC_STRING_MAX
return BC_STRING_MAX;
#else
return -1;
#endif
case _SC_EQUIV_CLASS_MAX:
#ifdef EQUIV_CLASS_MAX
return EQUIV_CLASS_MAX;
#else
return -1;
#endif
case _SC_EXPR_NEST_MAX:
#ifdef EXPR_NEST_MAX
return EXPR_NEST_MAX;
#else
return -1;
#endif
case _SC_LINE_MAX:
#ifdef LINE_MAX
return LINE_MAX;
#else
return -1;
#endif
case _SC_RE_DUP_MAX:
#ifdef RE_DUP_MAX
return RE_DUP_MAX;
#else
return -1;
#endif
case _SC_2_VERSION:
/* This is actually supposed to return the version
of the 1003.2 utilities on the system {POSIX2_VERSION}. */
return _POSIX2_C_VERSION;
case _SC_2_C_BIND:
#ifdef _POSIX2_C_BIND
return _POSIX2_C_BIND;
#else
return -1;
#endif
case _SC_2_C_DEV:
#ifdef _POSIX2_C_DEV
return _POSIX2_C_DEV;
#else
return -1;
#endif
case _SC_2_FORT_DEV:
#ifdef _POSIX2_FORT_DEV
return _POSIX2_FORT_DEV;
#else
return -1;
#endif
case _SC_2_LOCALEDEF:
#ifdef _POSIX2_LOCALEDEF
return _POSIX2_LOCALEDEF;
#else
return -1;
#endif
case _SC_2_SW_DEV:
#ifdef _POSIX2_SW_DEV
return _POSIX2_SW_DEV;
#else
return -1;
#endif
}
}
weak_alias (__sysconf, sysconf)
Reference in New Issue View Git Blame Copy Permalink