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.\"
.IX Title "guestfs-erlang 3"
.TH guestfs-erlang 3 "2017-03-08" "libguestfs-1.34.6" "Virtualization Support"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "НАЗВА"
.IX Header "НАЗВА"
guestfs-erlang — як користуватися libguestfs з програми мовою Erlang
.SH "КОРОТКИЙ ОПИС"
.IX Header "КОРОТКИЙ ОПИС"
.Vb 6
\& {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).
.Ve
.SH "ОПИС"
.IX Header "ОПИС"
This manual page documents how to call libguestfs from the Erlang
programming language.  This page just documents the differences from the C
\&\s-1API\s0 and gives some examples.  If you are not familiar with using libguestfs,
you also need to read \fIguestfs\fR\|(3).
.SS "\s-1OPENING AND CLOSING THE HANDLE\s0"
.IX Subsection "OPENING AND CLOSING THE HANDLE"
The Erlang bindings are implemented using an external program called
\&\f(CW\*(C`erl\-guestfs\*(C'\fR.  This program must be on the current \s-1PATH,\s0 or else you
should specify the full path to the program:
.PP
.Vb 1
\& {ok, G} = guestfs:create().
\&
\& {ok, G} = guestfs:create("/шлях/до/erl\-guestfs").
.Ve
.PP
\&\f(CW\*(C`G\*(C'\fR is the libguestfs handle which you should pass to other functions.
.PP
Закриття обробника:
.PP
.Vb 1
\& ok = guestfs:close(G).
.Ve
.SS "ФУНКЦІЇ І ДОДАТКОВІ ПАРАМЕТРИ"
.IX Subsection "ФУНКЦІЇ І ДОДАТКОВІ ПАРАМЕТРИ"
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.
.PP
.Vb 2
\& ok = guestfs:add_drive_opts(G, Disk,
\&                             [{format, "raw"}, {readonly, true}]).
.Ve
.PP
If the last argument would be an empty list, you can also omit it:
.PP
.Vb 1
\& ok = guestfs:add_drive_opts(G, Disk).
.Ve
.SS "ЗНАЧЕННЯ, ЩО ПОВЕРТАЮТЬСЯ, І ПОМИЛКИ"
.IX Subsection "ЗНАЧЕННЯ, ЩО ПОВЕРТАЮТЬСЯ, І ПОМИЛКИ"
On success, most functions return a \f(CW\*(C`Result\*(C'\fR term (which could be a list,
string, tuple etc.).  If there is nothing for the function to return, then
the atom \f(CW\*(C`ok\*(C'\fR is returned.
.PP
On error, you would see one of the following tuples:
.ie n .IP """{помилка, повідомлення, номер_помилки}""" 4
.el .IP "\f(CW{помилка, повідомлення, номер_помилки}\fR" 4
.IX Item "{помилка, повідомлення, номер_помилки}"
Позначає звичайну помилку у функції.
.Sp
\&\f(CW\*(C`Msg\*(C'\fR is the error message (string) and \f(CW\*(C`Errno\*(C'\fR is the Unix error
(integer).
.Sp
\&\f(CW\*(C`Errno\*(C'\fR може бути нульовим. Див. \*(L"guestfs_last_errno\*(R" in \fIguestfs\fR\|(3).
.ie n .IP """{unknown, Функція}""" 4
.el .IP "\f(CW{unknown, Функція}\fR" 4
.IX Item "{unknown, Функція}"
This indicates that the function you called is not known.  Generally this
means you are mixing \f(CW\*(C`erl\-guestfs\*(C'\fR from another version of libguestfs,
which you should not do.
.Sp
\&\f(CW\*(C`Функція\*(C'\fR — назва невідомої функції.
.ie n .IP """{unknownarg, Аргумент}""" 4
.el .IP "\f(CW{unknownarg, Аргумент}\fR" 4
.IX Item "{unknownarg, Аргумент}"
This indicates that you called a function with optional arguments, with an
unknown argument name.
.Sp
\&\f(CW\*(C`Аргумент\*(C'\fR — назва невідомого аргументу.
.SH "ПРИКЛАД 1. СТВОРЕННЯ ОБРАЗУ ДИСКА"
.IX Header "ПРИКЛАД 1. СТВОРЕННЯ ОБРАЗУ ДИСКА"
\&\f(CW@EXAMPLE1\fR@
.SH "ПРИКЛАД 2. ПЕРЕВІРКА ОБРАЗУ ДИСКА ВІРТУАЛЬНОЇ МАШИНИ"
.IX Header "ПРИКЛАД 2. ПЕРЕВІРКА ОБРАЗУ ДИСКА ВІРТУАЛЬНОЇ МАШИНИ"
\&\f(CW@EXAMPLE2\fR@
.SH "ТАКОЖ ПЕРЕГЛЯНЬТЕ"
.IX Header "ТАКОЖ ПЕРЕГЛЯНЬТЕ"
\&\fIguestfs\fR\|(3), \fIguestfs\-examples\fR\|(3), \fIguestfs\-golang\fR\|(3),
\&\fIguestfs\-java\fR\|(3), \fIguestfs\-lua\fR\|(3), \fIguestfs\-ocaml\fR\|(3),
\&\fIguestfs\-perl\fR\|(3), \fIguestfs\-python\fR\|(3), \fIguestfs\-recipes\fR\|(1),
\&\fIguestfs\-ruby\fR\|(3), http://www.erlang.org/.  http://libguestfs.org/.
.SH "АВТОРИ"
.IX Header "АВТОРИ"
Richard W.M. Jones (\f(CW\*(C`rjones at redhat dot com\*(C'\fR)
.SH "АВТОРСЬКІ ПРАВА"
.IX Header "АВТОРСЬКІ ПРАВА"
© Red Hat Inc., 2011–2012
.SH "LICENSE"
.IX Header "LICENSE"
.SH "BUGS"
.IX Header "BUGS"
To get a list of bugs against libguestfs, use this link:
https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools
.PP
To report a new bug against libguestfs, use this link:
https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools
.PP
When reporting a bug, please supply:
.IP "\(bu" 4
The version of libguestfs.
.IP "\(bu" 4
Where you got libguestfs (eg. which Linux distro, compiled from source, etc)
.IP "\(bu" 4
Describe the bug accurately and give a way to reproduce it.
.IP "\(bu" 4
Run \fIlibguestfs\-test\-tool\fR\|(1) and paste the \fBcomplete, unedited\fR
output into the bug report.