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=encoding utf8
=head1 名前
guestfs-erlang - Erlang から libguestfs を使用する方法
=head1 書式
{ok, G} = guestfs:create(),
ok = guestfs:add_drive_opts(G, Disk,
[{format, "raw"}, {readonly, true}]),
ok = guestfs:launch(G),
[Device] = guestfs:list_devices(G),
ok = guestfs:close(G).
=head1 説明
This manual page documents how to call libguestfs from the Erlang
programming language. This page just documents the differences from the C
API and gives some examples. If you are not familiar with using libguestfs,
you also need to read L<guestfs(3)>.
=head2 OPENING AND CLOSING THE HANDLE
The Erlang bindings are implemented using an external program called
C<erl-guestfs>. This program must be on the current PATH, or else you
should specify the full path to the program:
{ok, G} = guestfs:create().
{ok, G} = guestfs:create("/path/to/erl-guestfs").
C<G> is the libguestfs handle which you should pass to other functions.
ハンドルを閉じるには:
ok = guestfs:close(G).
=head2 FUNCTIONS WITH OPTIONAL ARGUMENTS
For functions that take optional arguments, the first arguments are the
non-optional ones. The last argument is a list of tuples supplying the
remaining optional arguments.
ok = guestfs:add_drive_opts(G, Disk,
[{format, "raw"}, {readonly, true}]).
最後の引数が空の一覧ならば、それを省略できます:
ok = guestfs:add_drive_opts(G, Disk).
=head2 返り値およびエラー
On success, most functions return a C<Result> term (which could be a list,
string, tuple etc.). If there is nothing for the function to return, then
the atom C<ok> is returned.
エラーが発生すると、以下の組のどれかが表示されます:
=over 4
=item C<{error, Msg, Errno}>
これは関数からの通常のエラーを意味します。
C<Msg> はエラーメッセージ（文字列）です。C<Errno> は Unix エラー（整数）です。
C<Errno> は 0 の可能性があります。 L<guestfs(3)/guestfs_last_errno> 参照。
=item C<{unknown, Function}>
This indicates that the function you called is not known. Generally this
means you are mixing C<erl-guestfs> from another version of libguestfs,
which you should not do.
C<Function> は未知の関数の名前です。
=item C<{unknownarg, Arg}>
This indicates that you called a function with optional arguments, with an
unknown argument name.
C<Arg> is the name of the unknown argument.
=back
=head1 例 1: ディスクイメージの作成
@EXAMPLE1@
=head1 例 2: 仮想マシンのディスクイメージの検査
@EXAMPLE2@
=head1 関連項目
L<guestfs(3)>, L<guestfs-examples(3)>, L<guestfs-java(3)>,
L<guestfs-ocaml(3)>, L<guestfs-perl(3)>, L<guestfs-python(3)>,
L<guestfs-recipes(1)>, L<guestfs-ruby(3)>, L<http://www.erlang.org/>.
L<http://libguestfs.org/>。
=head1 著者
Richard W.M. Jones (C<rjones at redhat dot com>)
=head1 COPYRIGHT
Copyright (C) 2011 Red Hat Inc. L<http://libguestfs.org/>
このマニュアルページにある例は、なんら制限なく自由にコピー、修正、配布できます。
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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