|File: [cvs.NetBSD.org] / src / lib / libc / gen / ulimit.3 (download)
Revision 1.2, Mon Oct 11 11:03:27 1999 UTC (19 years, 2 months ago) by kleink
CVS Tags: wrstuden-devbsize-base, wrstuden-devbsize-19991221, netbsd-1-5-base, netbsd-1-5-RELEASE, netbsd-1-5-PATCH003, netbsd-1-5-PATCH002, netbsd-1-5-PATCH001, netbsd-1-5-BETA2, netbsd-1-5-BETA, netbsd-1-5-ALPHA2, netbsd-1-5, minoura-xpg4dl-base, minoura-xpg4dl, comdex-fall-1999-base, comdex-fall-1999
Branch point for: nathanw_sa
Changes since 1.1: +5 -5
Fix some formatting mistakes of mine.
.\" $NetBSD: ulimit.3,v 1.2 1999/10/11 11:03:27 kleink Exp $
.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Klaus Klein.
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the NetBSD
.\" Foundation, Inc. and its contributors.
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
.\" contributors may be used to endorse or promote products derived
.\" from this software without specific prior written permission.
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.Dd September 13, 1999
.Dt ULIMIT 3
.Nd get and set process limits
.Fd #include <ulimit.h>
.Ft long int
.Fn ulimit "int cmd" ...
function provides a method to query or alter resource limits of the calling
process. The method to be performed is specified by the
argument; possible values are:
.Bl -tag -width UL_GETFSIZEXX
.It Li UL_GETFSIZE
Return the soft file size limit of the process.
The value returned is in units of 512-byte blocks.
If the result cannot be represented in an object of type
.Fa long int ,
the result is unspecified.
.It Li UL_SETFSIZE
Set the hard and soft file size limits of the process to the value of the
second argument passed, which is in units of 512-byte blocks, and which is
expected to be of type
.Fa long int .
The new file size limit of the process is returned.
Any process may decrease the limit, but raising it is only permitted if
the caller is the super-user.
If successful, the
function will not change the setting of
.Va errno .
function is an obsolete interface; applications are encouraged to use
.Xr getrlimit 2
.Xr setrlimit 2
.Sh RETURN VALUE
If successful, the
function returns the value of the requested limit.
Otherwise, it returns -1, sets
to indicate an error, and the limit is not changed.
Therefore, to detect an error condition applications should set
to 0, call
.Fn ulimit ,
and check if -1 is returned and
function will fail if:
.Bl -tag -width Er
.It Bq Er EINVAL
argument is not valid.
.It Bq Er EPERM
It was attempted to increase a limit, and the caller is not the super-user.
.Sh SEE ALSO
.Xr getrlimit 2 ,
.Xr setrlimit 2
function conforms to
.St -xsh5 .