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.\" $Id$
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.\"
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.\" Copyright 1998 by the Massachusetts Institute of Technology.
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.\"
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.\" Permission to use, copy, modify, and distribute this
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.\" software and its documentation for any purpose and without
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.\" fee is hereby granted, provided that the above copyright
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.\" notice appear in all copies and that both that copyright
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.\" notice and this permission notice appear in supporting
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.\" documentation, and that the name of M.I.T. not be used in
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.\" advertising or publicity pertaining to distribution of the
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.\" software without specific, written prior permission.
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.\" M.I.T. makes no representations about the suitability of
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.\" this software for any purpose. It is provided "as is"
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.\" without express or implied warranty.
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.\"
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.TH ARES_SAVE_OPTIONS 3 "5 March 2010"
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.SH NAME
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ares_save_options \- Save configuration values obtained from initialized ares_channel
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.SH SYNOPSIS
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.nf
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.B #include <ares.h>
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.PP
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.B int ares_save_options(ares_channel \fIchannel\fP, struct ares_options *\fIoptions\fP, int *\fIoptmask\fP)
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.fi
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.SH DESCRIPTION
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The \fBares_save_options(3)\fP function saves the channel data identified by
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.IR channel ,
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into the options struct identified by
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.IR options ,
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and saves the mask of options which are set to the integer
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pointer (passed by reference) identified by
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.IR optmask .
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The resultant options and optmask are then able to be
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passed directly to ares_init_options. When the options
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are no longer needed, ares_destroy_options should be called
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to free any associated memory.
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.SH RETURN VALUES
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.B ares_save_options(3)
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can return any of the following values:
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.TP 15
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.B ARES_SUCCESS
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The channel data was successfuly stored
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.TP 15
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.B ARES_ENOMEM
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The memory was exhausted
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.TP 15
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.B ARES_ENODATA
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The channel data identified by
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.IR channel
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were invalid.
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.SH NOTE
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Since c-ares 1.6.0 the ares_options struct has been "locked" meaning that it
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won't be extended to cover new functions. This function will remain
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functioning, but it can only return config data that can be represented in
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this config struct, which may no longer be the complete set of config
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options. \fBares_dup(3)\fP will not have that restriction.
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The ares_options struct can not handle potential IPv6 name servers the
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ares_channel might be configured to use. Function \fBares_save_options(3)\fP
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will only return IPv4 servers if any. In order to retrieve all name servers
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an ares_channel might be using, function \fBares_get_servers(3)\fP must be
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used instead.
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.SH SEE ALSO
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.BR ares_destroy_options (3),
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.BR ares_init_options (3),
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.BR ares_get_servers (3),
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.BR ares_dup (3)
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.SH AVAILABILITY
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ares_save_options(3) was added in c-ares 1.4.0
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.SH AUTHOR
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Brad House
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.br
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Copyright 1998 by the Massachusetts Institute of Technology.
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