nut-debian/docs/man/upscli_fd.3

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.\"     Title: upscli_fd
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
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.\"      Date: 04/26/2022
.\"    Manual: NUT Manual
.\"    Source: Network UPS Tools 2.8.0
.\"  Language: English
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.TH "UPSCLI_FD" "3" "04/26/2022" "Network UPS Tools 2\&.8\&.0" "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\&.
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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)