nut/docs/man/upscli_fd.3

'\" t
.\"     Title: upscli_fd
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.76.1 <http://docbook.sf.net/>
.\"      Date: 09/13/2013
.\"    Manual: NUT Manual
.\"    Source: Network UPS Tools 2.7.1-pre1
.\"  Language: English
.\"
.TH "UPSCLI_FD" "3" "09/13/2013" "Network UPS Tools 2\&.7\&.1\-p" "NUT Manual"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
upscli_fd \- Get file descriptor for connection
.SH "SYNOPSIS"
.sp
.nf
#include <upsclient\&.h>
.fi
.sp
.nf
int upscli_fd(UPSCONN_t *ups);
.fi
.SH "DESCRIPTION"
.sp
The \fBupscli_fd()\fR function takes the pointer \fIups\fR to a UPSCONN_t state structure and returns the value of the file descriptor for that connection, if any\&.
.sp
This may be useful for determining if the connection to \fBupsd\fR(8) has been lost\&.
.SH "RETURN VALUE"
.sp
The \fBupscli_fd()\fR function returns the file descriptor, which may be any non\-negative number\&. It returns \-1 if an error occurs\&.
.SH "SEE ALSO"
.sp
\fBupscli_connect\fR(3), \fBupscli_strerror\fR(3), \fBupscli_upserror\fR(3)