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author | mike <mike@FreeBSD.org> | 2002-08-08 04:50:36 +0000 |
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committer | mike <mike@FreeBSD.org> | 2002-08-08 04:50:36 +0000 |
commit | a72d8585b7d6c0e0b3cd0824b229a07724c33288 (patch) | |
tree | cbb393f0b70086e915644ca4cf3a98a13e26cb56 /lib/libc/gen/ulimit.3 | |
parent | 586a522666b49914c4ff437eeea75730cbeefec1 (diff) | |
download | FreeBSD-src-a72d8585b7d6c0e0b3cd0824b229a07724c33288.zip FreeBSD-src-a72d8585b7d6c0e0b3cd0824b229a07724c33288.tar.gz |
Implement POSIX.1-2001 (XSI)'s ulimit(3).
Submitted by: Kyle Martin <mkm@ieee.org>
Diffstat (limited to 'lib/libc/gen/ulimit.3')
-rw-r--r-- | lib/libc/gen/ulimit.3 | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/lib/libc/gen/ulimit.3 b/lib/libc/gen/ulimit.3 new file mode 100644 index 0000000..5451b4b --- /dev/null +++ b/lib/libc/gen/ulimit.3 @@ -0,0 +1,100 @@ +.\" Copyright (c) 2002 Kyle Martin. All rights reserved. +.\" +.\" 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. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 REGENTS 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. +.\" +.\" $FreeBSD$ +.\" +.Dd August 8, 2002 +.Dt ULIMIT 3 +.Os +.Sh NAME +.Nm ulimit +.Nd get and set process limits +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In ulimit.h +.Ft long +.Fn ulimit "int cmd" "..." +.Sh DESCRIPTION +The +.Fn ulimit +function will get and set process limits. +Currently this is limited to the maximum file size. +The +.Va cmd +parameter is one of the following: +.Pp +.Bl -tag -offset -width UL_GETSIZE +.It Dv UL_GETSIZE +will return the maximum file size in units of 512 blocks of +the current process. +.Pp +.It Dv UL_SETSIZE +will attempt to set the maximum file size of the current +process and its children with the second argument expressed as a long. +.El +.Sh RETURN VALUES +Upon successful completion, +.Fn ulimit +returns the value requested; +otherwise the value -1 is returned and +.Ar errno +is set to indicate the error. +.Sh ERRORS +The +.Fn ulimit +function will fail if: +.Bl -tag -width Er +.It Bq Er EINVAL +The command specified was invalid. +.It Bq Er EPERM +The limit specified to +.Fn ulimit +would have raised the maximum limit value, +and the caller is not the super-user. +.El +.Sh SEE ALSO +.Xr getrlimit 2 +.Sh STANDARDS +The +.Fn ulimit +function conforms to +.St -p1003.1-2001 . +.Sh HISTORY +The +.Fn ulimit +function first appeared in +.Fx 5.0 . +.Sh BUGS +The +.Fn ulimit +function provides limited precision for +setting and retrieving process limits. +If there is a need for greater precision than the +type +.Vt long +provides, the +.Xr getrlimit 2 +and +.Xr setrlimit 2 +functions should be considered. |