mirror of https://github.com/c-ares/c-ares.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
2.6 KiB
75 lines
2.6 KiB
.\" $Id$ |
|
.\" |
|
.\" Copyright 1998 by the Massachusetts Institute of Technology. |
|
.\" |
|
.\" Permission to use, copy, modify, and distribute this |
|
.\" software and its documentation for any purpose and without |
|
.\" fee is hereby granted, provided that the above copyright |
|
.\" notice appear in all copies and that both that copyright |
|
.\" notice and this permission notice appear in supporting |
|
.\" documentation, and that the name of M.I.T. not be used in |
|
.\" advertising or publicity pertaining to distribution of the |
|
.\" software without specific, written prior permission. |
|
.\" M.I.T. makes no representations about the suitability of |
|
.\" this software for any purpose. It is provided "as is" |
|
.\" without express or implied warranty. |
|
.\" |
|
.TH ARES_SAVE_OPTIONS 3 "5 March 2010" |
|
.SH NAME |
|
ares_save_options \- Save configuration values obtained from initialized ares_channel |
|
.SH SYNOPSIS |
|
.nf |
|
.B #include <ares.h> |
|
.PP |
|
.B int ares_save_options(ares_channel \fIchannel\fP, struct ares_options *\fIoptions\fP, int *\fIoptmask\fP) |
|
.fi |
|
.SH DESCRIPTION |
|
The \fBares_save_options(3)\fP function saves the channel data identified by |
|
.IR channel , |
|
into the options struct identified by |
|
.IR options , |
|
and saves the mask of options which are set to the integer |
|
pointer (passed by reference) identified by |
|
.IR optmask . |
|
|
|
The resultant options and optmask are then able to be |
|
passed directly to ares_init_options. When the options |
|
are no longer needed, ares_destroy_options should be called |
|
to free any associated memory. |
|
.SH RETURN VALUES |
|
.B ares_save_options(3) |
|
can return any of the following values: |
|
.TP 15 |
|
.B ARES_SUCCESS |
|
The channel data was successfuly stored |
|
.TP 15 |
|
.B ARES_ENOMEM |
|
The memory was exhausted |
|
.TP 15 |
|
.B ARES_ENODATA |
|
The channel data identified by |
|
.IR channel |
|
were invalid. |
|
.SH NOTE |
|
Since c-ares 1.6.0 the ares_options struct has been "locked" meaning that it |
|
won't be extended to cover new functions. This function will remain |
|
functioning, but it can only return config data that can be represented in |
|
this config struct, which may no longer be the complete set of config |
|
options. \fBares_dup(3)\fP will not have that restriction. |
|
|
|
The ares_options struct can not handle potential IPv6 name servers the |
|
ares_channel might be configured to use. Function \fBares_save_options(3)\fP |
|
will only return IPv4 servers if any. In order to retrieve all name servers |
|
an ares_channel might be using, function \fBares_get_servers(3)\fP must be |
|
used instead. |
|
.SH SEE ALSO |
|
.BR ares_destroy_options (3), |
|
.BR ares_init_options (3), |
|
.BR ares_get_servers (3), |
|
.BR ares_dup (3) |
|
.SH AVAILABILITY |
|
ares_save_options(3) was added in c-ares 1.4.0 |
|
.SH AUTHOR |
|
Brad House |
|
.br |
|
Copyright 1998 by the Massachusetts Institute of Technology.
|
|
|