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Add new closefrom() function

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Code taken from sudo, man page from FreeBSD.
This commit is contained in:
Guillem Jover
2011-12-31 08:39:44 +01:00
parent 3d614131b5
commit 943939d0e5
8 changed files with 222 additions and 2 deletions
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1
man/Makefile.am
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@@ -19,6 +19,7 @@ dist_man_MANS = \
arc4random_buf.3 \
arc4random_stir.3 \
arc4random_uniform.3 \
closefrom.3 \
dehumanize_number.3 \
fgetln.3 \
flopen.3 \

54
man/closefrom.3 Normal file
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@@ -0,0 +1,54 @@
.\" Copyright (c) 2009 Advanced Computing Technologies LLC
.\" Written by: John H. Baldwin <jhb@FreeBSD.org>
.\" 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 AUTHOR 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 June 12, 2009
.Dt CLOSEFROM 3
.Os
.Sh NAME
.Nm closefrom
.Nd delete open file descriptors
.Sh LIBRARY
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.Lb libbsd
.Sh SYNOPSIS
.In bsd/unistd.h
.Ft void
.Fn closefrom "int lowfd"
.Sh DESCRIPTION
The
.Fn closefrom
system call deletes all open file descriptors greater than or equal to
.Fa lowfd
from the per-process object reference table.
Any errors encountered while closing file descriptors are ignored.
.Sh SEE ALSO
.Xr close 2
.Sh HISTORY
The
.Fn closefrom
function first appeared in
.Fx 8.0 .