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https://github.com/libguestfs/libguestfs.git
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2b59b5f1d2
Operations that need to work directly on guest block devices will fail because the block devices are busy. Therefore add a phase with the filesystems unmounted, and allow operations to specify that they need to work in this phase.
74 lines
2.3 KiB
OCaml
74 lines
2.3 KiB
OCaml
(* virt-sysprep
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* Copyright (C) 2012 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*)
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open Printf
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open Utils
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open Sysprep_operation
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open Sysprep_gettext.Gettext
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module G = Guestfs
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let hostname = ref "localhost.localdomain"
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let hostname_perform g root =
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let typ = g#inspect_get_type root in
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let distro = g#inspect_get_distro root in
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match typ, distro with
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| "linux", ("fedora"|"rhel"|"centos"|"scientificlinux"|"redhat-based") ->
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(* Replace HOSTNAME=... entry. The code assumes it's a small,
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* plain text file.
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*)
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let filename = "/etc/sysconfig/network" in
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let lines = Array.to_list (g#read_lines filename) in
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let lines = List.filter (
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fun line -> not (string_prefix line "HOSTNAME=")
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) lines in
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let file =
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String.concat "\n" lines ^
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sprintf "\nHOSTNAME=%s\n" !hostname in
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g#write filename file;
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[ `Created_files ]
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| "linux", ("debian"|"ubuntu") ->
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g#write "/etc/hostname" !hostname;
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[ `Created_files ]
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| _ -> []
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let hostname_op = {
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name = "hostname";
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enabled_by_default = true;
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heading = s_"Change the hostname of the guest";
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pod_description = Some (s_"\
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This operation changes the hostname of the guest to the value
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given in the I<--hostname> parameter.
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If the I<--hostname> parameter is not given, then the hostname is changed
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to C<localhost.localdomain>.");
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extra_args = [
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("--hostname", Arg.Set_string hostname, s_"hostname" ^ " " ^ s_"New hostname"),
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s_"\
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Change the hostname. If not given, defaults to C<localhost.localdomain>."
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];
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perform_on_filesystems = Some hostname_perform;
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perform_on_devices = None;
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}
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let () = register_operation hostname_op
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