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Diffstat (limited to 'src/c-ares/ares_init.3')
-rw-r--r-- | src/c-ares/ares_init.3 | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/c-ares/ares_init.3 b/src/c-ares/ares_init.3 new file mode 100644 index 000000000..0baf4b76f --- /dev/null +++ b/src/c-ares/ares_init.3 @@ -0,0 +1,81 @@ +.\" +.\" Copyright 1998 by the Massachusetts Institute of Technology. +.\" Copyright (C) 2004-2010 by Daniel Stenberg +.\" +.\" 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_INIT 3 "5 March 2010" +.SH NAME +ares_init \- Initialize a resolver channel +.SH SYNOPSIS +.nf +#include <ares.h> + +int ares_init(ares_channel *\fIchannelptr\fP) +.fi +.SH DESCRIPTION +The \fBares_init(3)\fP function initializes a communications channel for name +service lookups. If it returns successfully, \fBares_init(3)\fP will set the +variable pointed to by \fIchannelptr\fP to a handle used to identify the name +service channel. The caller should invoke \fIares_destroy(3)\fP on the handle +when the channel is no longer needed. + +The \fIares_init_options(3)\fP function is provide to offer more init +alternatives. +.SH RETURN VALUES +\fIares_init(3)\fP can return any of the following values: +.TP 14 +.B ARES_SUCCESS +Initialization succeeded. +.TP 14 +.B ARES_EFILE +A configuration file could not be read. +.TP 14 +.B ARES_ENOMEM +The process's available memory was exhausted. +.TP 14 +.B ARES_ENOTINITIALIZED +c-ares library initialization not yet performed. +.SH NOTES +When initializing from +.B /etc/resolv.conf, +.BR ares_init (3) +reads the +.I domain +and +.I search +directives to allow lookups of short names relative to the domains +specified. The +.I domain +and +.I search +directives override one another. If more that one instance of either +.I domain +or +.I search +directives is specified, the last occurrence wins. For more information, +please see the +.BR resolv.conf (5) +manual page. +.SH SEE ALSO +.BR ares_init_options(3), +.BR ares_destroy(3), +.BR ares_dup(3), +.BR ares_library_init(3), +.BR ares_set_servers(3) +.SH AUTHOR +Greg Hudson, MIT Information Systems +.br +Copyright 1998 by the Massachusetts Institute of Technology. +.br +Copyright (C) 2004-2010 by Daniel Stenberg. |