1.\" 2.\" Copyright (c) 2005 The DragonFly Project. All rights reserved. 3.\" 4.\" This code is derived from software contributed to The DragonFly Project 5.\" by Hiten Pandya <hmp@backplane.com>. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in 15.\" the documentation and/or other materials provided with the 16.\" distribution. 17.\" 3. Neither the name of The DragonFly Project nor the names of its 18.\" contributors may be used to endorse or promote products derived 19.\" from this software without specific, prior written permission. 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" $DragonFly: src/lib/libc/sys/closefrom.2,v 1.1 2005/04/09 23:41:26 hmp Exp $ 35.\" 36.\" $OpenBSD: closefrom.2,v 1.2 2004/01/12 20:52:09 jmc Exp $ 37.\" 38.\" Copyright (c) 2004 Ted Unangst. All rights reserved. 39.\" 40.\" Redistribution and use in source and binary forms, with or without 41.\" modification, are permitted provided that the following conditions 42.\" are met: 43.\" 1. Redistributions of source code must retain the above copyright 44.\" notice, this list of conditions and the following disclaimer. 45.\" 2. Redistributions in binary form must reproduce the above copyright 46.\" notice, this list of conditions and the following disclaimer in the 47.\" documentation and/or other materials provided with the distribution. 48.\" 49.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 50.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 53.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59.\" SUCH DAMAGE. 60.Dd April 10, 2004 61.Dt CLOSEFROM 2 62.Os 63.Sh NAME 64.Nm closefrom 65.Nd delete many descriptors 66.Sh SYNOPSIS 67.Fd #include <unistd.h> 68.Ft int 69.Fn closefrom "int fd" 70.Sh DESCRIPTION 71The 72.Fn closefrom 73system call deletes all descriptors numbered 74.Fa fd 75and higher from the per-process file descriptor table. 76It is effectively the same as calling 77.Xr close 2 78on each descriptor. 79.Sh IMPLEMENTATION NOTES 80The behaviour of the 81.Nm 82system call in 83.Dx 84is similar to that of 85.Tn SunOS 86except for error returned in the case of an abort. 87.Sh RETURN VALUES 88The value of 0 is returned in all cases, or 89.Er EINTR 90when an interrupt or abort is received. 91.Sh SEE ALSO 92.Xr close 2 93.Sh HISTORY 94The 95.Nm 96system call appeared in 97.Dx 1.2 . 98It was originally introduced in some version of 99.Tn "Sun Solaris" . 100.Sh AUTHORS 101This system call is written by 102.An Joerg Sonnenberger Aq joerg@bec.de . 103