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/*
* Copyright (C) 2019 Colin Walters <walters@verbum.org>
*
* This program 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 licence 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "ostree-sysroot-private.h"
#include "ostree-bootloader-zipl.h"
#include "otutil.h"
#include <string.h>
/* This is specific to zipl today, but in the future we could also
* use it for the grub2-mkconfig case.
*/
static const char zipl_requires_execute_path[] = "boot/ostree-bootloader-update.stamp";
struct _OstreeBootloaderZipl
{
GObject parent_instance;
OstreeSysroot *sysroot;
};
typedef GObjectClass OstreeBootloaderZiplClass;
static void _ostree_bootloader_zipl_bootloader_iface_init (OstreeBootloaderInterface *iface);
G_DEFINE_TYPE_WITH_CODE (OstreeBootloaderZipl, _ostree_bootloader_zipl, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (OSTREE_TYPE_BOOTLOADER, _ostree_bootloader_zipl_bootloader_iface_init));
static gboolean
_ostree_bootloader_zipl_query (OstreeBootloader *bootloader,
gboolean *out_is_active,
GCancellable *cancellable,
GError **error)
{
/* We don't auto-detect this one; should be explicitly chosen right now.
* see also https://github.com/coreos/coreos-assembler/pull/849
*/
*out_is_active = FALSE;
return TRUE;
}
static const char *
_ostree_bootloader_zipl_get_name (OstreeBootloader *bootloader)
{
return "zipl";
}
static gboolean
_ostree_bootloader_zipl_write_config (OstreeBootloader *bootloader,
int bootversion,
GPtrArray *new_deployments,
GCancellable *cancellable,
GError **error)
{
OstreeBootloaderZipl *self = OSTREE_BOOTLOADER_ZIPL (bootloader);
/* Write our stamp file */
if (!glnx_file_replace_contents_at (self->sysroot->sysroot_fd, zipl_requires_execute_path,
(guint8*)"", 0, GLNX_FILE_REPLACE_NODATASYNC,
cancellable, error))
return FALSE;
return TRUE;
}
static gboolean
_ostree_bootloader_zipl_post_bls_sync (OstreeBootloader *bootloader,
GCancellable *cancellable,
GError **error)
{
OstreeBootloaderZipl *self = OSTREE_BOOTLOADER_ZIPL (bootloader);
/* Note that unlike the grub2-mkconfig backend, we make no attempt to
* chroot().
*/
g_assert (self->sysroot->booted_deployment);
if (!glnx_fstatat_allow_noent (self->sysroot->sysroot_fd, zipl_requires_execute_path, NULL, 0, error))
return FALSE;
/* If there's no stamp file, nothing to do */
if (errno == ENOENT)
return TRUE;
const char *const zipl_argv[] = {"zipl", NULL};
int estatus;
if (!g_spawn_sync (NULL, (char**)zipl_argv, NULL, G_SPAWN_SEARCH_PATH,
NULL, NULL, NULL, NULL, &estatus, error))
return FALSE;
if (!g_spawn_check_exit_status (estatus, error))
return FALSE;
if (!glnx_unlinkat (self->sysroot->sysroot_fd, zipl_requires_execute_path, 0, error))
return FALSE;
return TRUE;
}
static void
_ostree_bootloader_zipl_finalize (GObject *object)
{
OstreeBootloaderZipl *self = OSTREE_BOOTLOADER_ZIPL (object);
g_clear_object (&self->sysroot);
G_OBJECT_CLASS (_ostree_bootloader_zipl_parent_class)->finalize (object);
}
void
_ostree_bootloader_zipl_init (OstreeBootloaderZipl *self)
{
}
static void
_ostree_bootloader_zipl_bootloader_iface_init (OstreeBootloaderInterface *iface)
{
iface->query = _ostree_bootloader_zipl_query;
iface->get_name = _ostree_bootloader_zipl_get_name;
iface->write_config = _ostree_bootloader_zipl_write_config;
iface->post_bls_sync = _ostree_bootloader_zipl_post_bls_sync;
}
void
_ostree_bootloader_zipl_class_init (OstreeBootloaderZiplClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->finalize = _ostree_bootloader_zipl_finalize;
}
OstreeBootloaderZipl *
_ostree_bootloader_zipl_new (OstreeSysroot *sysroot)
{
OstreeBootloaderZipl *self = g_object_new (OSTREE_TYPE_BOOTLOADER_ZIPL, NULL);
self->sysroot = g_object_ref (sysroot);
return self;
}
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