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https://github.com/ostreedev/ostree.git
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Merge pull request #1937 from cgwalters/zipl-backend
bootloader: Add a zipl bootloader backend
This commit is contained in:
commit
38729a4f90
@ -117,6 +117,8 @@ libostree_1_la_SOURCES = \
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src/libostree/ostree-bootloader.c \
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src/libostree/ostree-bootloader-grub2.h \
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src/libostree/ostree-bootloader-grub2.c \
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src/libostree/ostree-bootloader-zipl.h \
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src/libostree/ostree-bootloader-zipl.c \
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src/libostree/ostree-bootloader-syslinux.h \
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src/libostree/ostree-bootloader-syslinux.c \
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src/libostree/ostree-bootloader-uboot.h \
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152
src/libostree/ostree-bootloader-zipl.c
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152
src/libostree/ostree-bootloader-zipl.c
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@ -0,0 +1,152 @@
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/*
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* Copyright (C) 2019 Colin Walters <walters@verbum.org>
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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 Lesser General Public License as published
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* by the Free Software Foundation; either version 2 of the licence or (at
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* your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include "ostree-sysroot-private.h"
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#include "ostree-bootloader-zipl.h"
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#include "otutil.h"
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#include <string.h>
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/* This is specific to zipl today, but in the future we could also
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* use it for the grub2-mkconfig case.
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*/
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static const char zipl_requires_execute_path[] = "boot/ostree-bootloader-update.stamp";
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struct _OstreeBootloaderZipl
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{
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GObject parent_instance;
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OstreeSysroot *sysroot;
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};
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typedef GObjectClass OstreeBootloaderZiplClass;
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static void _ostree_bootloader_zipl_bootloader_iface_init (OstreeBootloaderInterface *iface);
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G_DEFINE_TYPE_WITH_CODE (OstreeBootloaderZipl, _ostree_bootloader_zipl, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (OSTREE_TYPE_BOOTLOADER, _ostree_bootloader_zipl_bootloader_iface_init));
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static gboolean
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_ostree_bootloader_zipl_query (OstreeBootloader *bootloader,
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gboolean *out_is_active,
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GCancellable *cancellable,
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GError **error)
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{
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/* We don't auto-detect this one; should be explicitly chosen right now.
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* see also https://github.com/coreos/coreos-assembler/pull/849
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*/
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*out_is_active = FALSE;
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return TRUE;
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}
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static const char *
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_ostree_bootloader_zipl_get_name (OstreeBootloader *bootloader)
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{
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return "zipl";
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}
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static gboolean
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_ostree_bootloader_zipl_write_config (OstreeBootloader *bootloader,
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int bootversion,
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GPtrArray *new_deployments,
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GCancellable *cancellable,
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GError **error)
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{
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OstreeBootloaderZipl *self = OSTREE_BOOTLOADER_ZIPL (bootloader);
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/* Write our stamp file */
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if (!glnx_file_replace_contents_at (self->sysroot->sysroot_fd, zipl_requires_execute_path,
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(guint8*)"", 0, GLNX_FILE_REPLACE_NODATASYNC,
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cancellable, error))
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return FALSE;
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return TRUE;
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}
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static gboolean
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_ostree_bootloader_zipl_post_bls_sync (OstreeBootloader *bootloader,
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GCancellable *cancellable,
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GError **error)
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{
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OstreeBootloaderZipl *self = OSTREE_BOOTLOADER_ZIPL (bootloader);
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/* Note that unlike the grub2-mkconfig backend, we make no attempt to
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* chroot().
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*/
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g_assert (self->sysroot->booted_deployment);
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if (!glnx_fstatat_allow_noent (self->sysroot->sysroot_fd, zipl_requires_execute_path, NULL, 0, error))
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return FALSE;
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/* If there's no stamp file, nothing to do */
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if (errno == ENOENT)
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return TRUE;
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const char *const zipl_argv[] = {"zipl", NULL};
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int estatus;
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if (!g_spawn_sync (NULL, (char**)zipl_argv, NULL, G_SPAWN_SEARCH_PATH,
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NULL, NULL, NULL, NULL, &estatus, error))
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return FALSE;
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if (!g_spawn_check_exit_status (estatus, error))
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return FALSE;
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if (!glnx_unlinkat (self->sysroot->sysroot_fd, zipl_requires_execute_path, 0, error))
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return FALSE;
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return TRUE;
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}
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static void
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_ostree_bootloader_zipl_finalize (GObject *object)
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{
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OstreeBootloaderZipl *self = OSTREE_BOOTLOADER_ZIPL (object);
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g_clear_object (&self->sysroot);
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G_OBJECT_CLASS (_ostree_bootloader_zipl_parent_class)->finalize (object);
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}
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void
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_ostree_bootloader_zipl_init (OstreeBootloaderZipl *self)
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{
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}
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static void
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_ostree_bootloader_zipl_bootloader_iface_init (OstreeBootloaderInterface *iface)
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{
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iface->query = _ostree_bootloader_zipl_query;
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iface->get_name = _ostree_bootloader_zipl_get_name;
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iface->write_config = _ostree_bootloader_zipl_write_config;
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iface->post_bls_sync = _ostree_bootloader_zipl_post_bls_sync;
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}
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void
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_ostree_bootloader_zipl_class_init (OstreeBootloaderZiplClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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object_class->finalize = _ostree_bootloader_zipl_finalize;
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}
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OstreeBootloaderZipl *
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_ostree_bootloader_zipl_new (OstreeSysroot *sysroot)
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{
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OstreeBootloaderZipl *self = g_object_new (OSTREE_TYPE_BOOTLOADER_ZIPL, NULL);
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self->sysroot = g_object_ref (sysroot);
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return self;
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}
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36
src/libostree/ostree-bootloader-zipl.h
Normal file
36
src/libostree/ostree-bootloader-zipl.h
Normal file
@ -0,0 +1,36 @@
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/*
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* Copyright (C) 2019 Colin Walters <walters@verbum.org>
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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 Lesser General Public License as published
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* by the Free Software Foundation; either version 2 of the licence or (at
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* your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#pragma once
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#include "ostree-bootloader.h"
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G_BEGIN_DECLS
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#define OSTREE_TYPE_BOOTLOADER_ZIPL (_ostree_bootloader_zipl_get_type ())
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#define OSTREE_BOOTLOADER_ZIPL(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), OSTREE_TYPE_BOOTLOADER_ZIPL, OstreeBootloaderZipl))
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#define OSTREE_IS_BOOTLOADER_ZIPL(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), OSTREE_TYPE_BOOTLOADER_ZIPL))
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typedef struct _OstreeBootloaderZipl OstreeBootloaderZipl;
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GType _ostree_bootloader_zipl_get_type (void) G_GNUC_CONST;
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OstreeBootloaderZipl * _ostree_bootloader_zipl_new (OstreeSysroot *sysroot);
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G_END_DECLS
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@ -65,6 +65,19 @@ _ostree_bootloader_write_config (OstreeBootloader *self,
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cancellable, error);
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}
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gboolean
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_ostree_bootloader_post_bls_sync (OstreeBootloader *self,
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GCancellable *cancellable,
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GError **error)
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{
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g_return_val_if_fail (OSTREE_IS_BOOTLOADER (self), FALSE);
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if (OSTREE_BOOTLOADER_GET_IFACE (self)->post_bls_sync)
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return OSTREE_BOOTLOADER_GET_IFACE (self)->post_bls_sync (self, cancellable, error);
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return TRUE;
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}
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gboolean
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_ostree_bootloader_is_atomic (OstreeBootloader *self)
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{
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@ -47,6 +47,9 @@ struct _OstreeBootloaderInterface
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GPtrArray *new_deployments,
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GCancellable *cancellable,
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GError **error);
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gboolean (* post_bls_sync) (OstreeBootloader *self,
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GCancellable *cancellable,
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GError **error);
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gboolean (* is_atomic) (OstreeBootloader *self);
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};
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G_DEFINE_AUTOPTR_CLEANUP_FUNC (OstreeBootloader, g_object_unref)
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@ -66,6 +69,10 @@ gboolean _ostree_bootloader_write_config (OstreeBootloader *self,
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GCancellable *cancellable,
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GError **error);
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gboolean _ostree_bootloader_post_bls_sync (OstreeBootloader *self,
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GCancellable *cancellable,
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GError **error);
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gboolean _ostree_bootloader_is_atomic (OstreeBootloader *self);
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G_END_DECLS
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@ -3184,8 +3184,10 @@ reload_sysroot_config (OstreeRepo *self,
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* binary "x" in /usr/lib/ostree/bootloaders/x). See:
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* https://github.com/ostreedev/ostree/issues/1719
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* https://github.com/ostreedev/ostree/issues/1801
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* Also, dedup these strings with the bootloader implementations
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*/
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if (!(g_str_equal (bootloader, "auto") || g_str_equal (bootloader, "none")))
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if (!(g_str_equal (bootloader, "auto") || g_str_equal (bootloader, "none")
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|| g_str_equal (bootloader, "zipl")))
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return glnx_throw (error, "Invalid bootloader configuration: '%s'", bootloader);
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g_free (self->bootloader);
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@ -43,6 +43,7 @@
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#include "ostree.h"
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#include "ostree-sysroot-private.h"
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#include "ostree-sepolicy-private.h"
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#include "ostree-bootloader-zipl.h"
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#include "ostree-deployment-private.h"
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#include "ostree-core-private.h"
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#include "ostree-linuxfsutil.h"
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@ -1829,6 +1830,7 @@ prepare_new_bootloader_link (OstreeSysroot *sysroot,
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/* Update the /boot/loader symlink to point to /boot/loader.$new_bootversion */
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static gboolean
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swap_bootloader (OstreeSysroot *sysroot,
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OstreeBootloader *bootloader,
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int current_bootversion,
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int new_bootversion,
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GCancellable *cancellable,
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@ -1862,6 +1864,15 @@ swap_bootloader (OstreeSysroot *sysroot,
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if (fsync (boot_dfd) != 0)
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return glnx_throw_errno_prefix (error, "fsync(boot)");
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/* TODO: In the future also execute this automatically via a systemd unit
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* if we detect it's necessary.
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**/
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if (bootloader)
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{
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if (!_ostree_bootloader_post_bls_sync (bootloader, cancellable, error))
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return FALSE;
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}
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return TRUE;
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}
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@ -2128,7 +2139,7 @@ write_deployments_bootswap (OstreeSysroot *self,
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if (!full_system_sync (self, out_syncstats, cancellable, error))
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return FALSE;
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if (!swap_bootloader (self, self->bootversion, new_bootversion,
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if (!swap_bootloader (self, bootloader, self->bootversion, new_bootversion,
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cancellable, error))
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return FALSE;
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@ -2355,6 +2366,14 @@ ostree_sysroot_write_deployments_with_options (OstreeSysroot *self,
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{
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/* No bootloader specified; do not query bootloaders to run. */
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}
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else if (g_str_equal (bootloader_config, "zipl"))
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{
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/* Because we do not mark zipl as active by default, lets creating one here,
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* which is basically the same what _ostree_sysroot_query_bootloader() does
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* for other bootloaders if being activated.
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* */
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bootloader = (OstreeBootloader*) _ostree_bootloader_zipl_new (self);
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}
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bootloader_is_atomic = bootloader != NULL && _ostree_bootloader_is_atomic (bootloader);
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