glibc/sysdeps/unix/sysv/linux/ulimit.c
Andreas Jaeger 41bdb6e20c Update to LGPL v2.1.
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
2001-07-06 04:58:11 +00:00

79 lines
2.2 KiB
C

/* Copyright (C) 1991,92,94,95,96,97,98,2000 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 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <stdarg.h>
#include <sysdep.h>
#include <ulimit.h>
#include <unistd.h>
#include <sys/resource.h>
/* Function depends on CMD:
1 = Return the limit on the size of a file, in units of 512 bytes.
2 = Set the limit on the size of a file to NEWLIMIT. Only the
super-user can increase the limit.
3 = illegal due to shared libraries; normally is
(Return the maximum possible address of the data segment.)
4 = Return the maximum number of files that the calling process
can open.
Returns -1 on errors. */
long int
__ulimit (int cmd, ...)
{
struct rlimit limit;
va_list va;
long int result = -1;
va_start (va, cmd);
switch (cmd)
{
case UL_GETFSIZE:
/* Get limit on file size. */
if (__getrlimit (RLIMIT_FSIZE, &limit) == 0)
/* Convert from bytes to 512 byte units. */
result = limit.rlim_cur / 512;
break;
case UL_SETFSIZE:
/* Set limit on file size. */
{
long int newlimit = va_arg (va, long int);
limit.rlim_cur = newlimit * 512;
limit.rlim_max = newlimit * 512;
result = __setrlimit (RLIMIT_FSIZE, &limit);
}
break;
case __UL_GETOPENMAX:
result = __sysconf (_SC_OPEN_MAX);
break;
default:
__set_errno (EINVAL);
}
va_end (va);
return result;
}
weak_alias (__ulimit, ulimit);