86e1d4729f
the names required by 1003.1-2001. The old names are retained for source compatibility with FreeBSD 5.0 and will be removed before 6.0.
99 lines
2.8 KiB
Groff
99 lines
2.8 KiB
Groff
.\" Copyright (c) 2002 Kyle Martin. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd January 4, 2003
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.Dt ULIMIT 3
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.Os
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.Sh NAME
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.Nm ulimit
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.Nd get and set process limits
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In ulimit.h
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.Ft long
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.Fn ulimit "int cmd" "..."
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.Sh DESCRIPTION
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The
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.Fn ulimit
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function will get and set process limits.
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Currently this is limited to the maximum file size.
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The
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.Fa cmd
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argument is one of the following:
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.Bl -tag -width ".Dv UL_GETFSIZE"
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.It Dv UL_GETFSIZE
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will return the maximum file size in units of 512 blocks of
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the current process.
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.It Dv UL_SETFSIZE
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will attempt to set the maximum file size of the current
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process and its children with the second argument expressed as a long.
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.El
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.Sh RETURN VALUES
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Upon successful completion,
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.Fn ulimit
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returns the value requested;
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otherwise the value \-1 is returned and the global variable
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.Va errno
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is set to indicate the error.
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.Sh ERRORS
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The
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.Fn ulimit
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function will fail if:
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.Bl -tag -width Er
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.It Bq Er EINVAL
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The command specified was invalid.
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.It Bq Er EPERM
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The limit specified to
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.Fn ulimit
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would have raised the maximum limit value,
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and the caller is not the super-user.
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.El
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.Sh SEE ALSO
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.Xr getrlimit 2
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.Sh STANDARDS
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The
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.Fn ulimit
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function conforms to
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.St -p1003.1-2001 .
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.Sh HISTORY
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The
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.Fn ulimit
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function first appeared in
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.Fx 5.0 .
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.Sh BUGS
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The
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.Fn ulimit
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function provides limited precision for
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setting and retrieving process limits.
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If there is a need for greater precision than the
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type
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.Vt long
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provides, the
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.Xr getrlimit 2
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and
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.Xr setrlimit 2
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functions should be considered.
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