lib/libc/sys/closefrom.2 - master - nerfur/openbsd-src

lib/libc/sys/closefrom.2
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cheloha
Note closefrom(2)'s origins in Solaris 9.
31 май 2019, 21:36
31 май 2019, 21:36ca15f60
.\"	$OpenBSD: closefrom.2,v 1.10 2019/05/31 18:36:58 cheloha Exp $
.\"
.\" Copyright (c) 2004 Ted Unangst.  All rights reserved.
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.Dd $Mdocdate: May 31 2019 $
.Dt CLOSEFROM 2
.Os
.Sh NAME
.Nm closefrom
.Nd delete many descriptors
.Sh SYNOPSIS
.In unistd.h
.Ft int
.Fn closefrom "int fd"
.Sh DESCRIPTION
The
.Fn closefrom
call deletes all descriptors numbered
.Fa fd
and higher from the per-process file descriptor table.
It is effectively the same as calling
.Xr close 2
on each descriptor.
.Sh RETURN VALUES
.Rv -std
.Sh ERRORS
.Fn closefrom
will fail if:
.Bl -tag -width Er
.It Bq Er EBADF
.Fa fd
is greater than all open file descriptors.
.It Bq Er EINTR
An interrupt was received.
.El
.Sh SEE ALSO
.Xr close 2
.Sh STANDARDS
.Fn closefrom
is a
.Bx
and Solaris extension.
.Sh HISTORY
The
.Fn closefrom
function first appeared in Solaris 9 and has been available since
.Ox 3.5 .