|File: [cvs.NetBSD.org] / src / lib / libc / gen / ulimit.3 (download)
Revision 1.2, Mon Oct 11 11:03:27 1999 UTC (18 years, 1 month 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.
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.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 .