nut/docs/man/upscli_fd.3

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.\" Title: upscli_fd
.\" Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
.\" Date: 12/24/2010
.\" Manual: NUT Manual
.\" Source: Network UPS Tools
.\" Language: English
.\"
.TH "UPSCLI_FD" "3" "12/24/2010" "Network UPS Tools" "NUT Manual"
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.SH "NAME"
upscli_fd \- Get file descriptor for connection
.SH "SYNOPSIS"
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#include <upsclient\&.h>
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int upscli_fd(UPSCONN_t *ups);
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.SH "DESCRIPTION"
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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\&.
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This may be useful for determining if the connection to \fBupsd\fR(8) has been lost\&.
.SH "RETURN VALUE"
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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"
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\fBupscli_connect\fR(3), \fBupscli_strerror\fR(3), \fBupscli_upserror\fR(3)