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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
*
* Copyright (C) 2012,2014 Colin Walters <walters@verbum.org>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "ot-main.h"
#include "ot-admin-builtins.h"
#include "ot-admin-functions.h"
#include "ostree.h"
#include "otutil.h"
#include <unistd.h>
#include <stdlib.h>
#include <glib/gi18n.h>
static gboolean opt_reboot;
static char *opt_osname;
static GOptionEntry options[] = {
{ "reboot", 'r', 0, G_OPTION_ARG_NONE, &opt_reboot, "Reboot after switching trees", NULL },
{ "os", 0, 0, G_OPTION_ARG_STRING, &opt_osname, "Use a different operating system root than the current one", "OSNAME" },
{ NULL }
};
gboolean
ot_admin_builtin_switch (int argc, char **argv, GCancellable *cancellable, GError **error)
{
gboolean ret = FALSE;
g_autoptr(GOptionContext) context = NULL;
g_autoptr(OstreeSysroot) sysroot = NULL;
const char *new_provided_refspec = NULL;
g_autoptr(OstreeRepo) repo = NULL;
g_autofree char *origin_refspec = NULL;
g_autofree char *origin_remote = NULL;
g_autofree char *origin_ref = NULL;
g_autofree char *new_remote = NULL;
g_autofree char *new_ref = NULL;
g_autofree char *new_refspec = NULL;
const char* remote;
g_autoptr(OstreeSysrootUpgrader) upgrader = NULL;
g_autoptr(OstreeAsyncProgress) progress = NULL;
gboolean changed;
GKeyFile *old_origin;
g_autoptr(GKeyFile) new_origin = NULL;
context = g_option_context_new ("REF - Construct new tree from REF and deploy it");
if (!ostree_admin_option_context_parse (context, options, &argc, &argv,
OSTREE_ADMIN_BUILTIN_FLAG_SUPERUSER,
&sysroot, cancellable, error))
goto out;
if (argc < 2)
{
ot_util_usage_error (context, "REF must be specified", error);
goto out;
}
new_provided_refspec = argv[1];
if (!ostree_sysroot_load (sysroot, cancellable, error))
goto out;
upgrader = ostree_sysroot_upgrader_new_for_os_with_flags (sysroot, opt_osname,
OSTREE_SYSROOT_UPGRADER_FLAGS_IGNORE_UNCONFIGURED,
cancellable, error);
if (!upgrader)
goto out;
old_origin = ostree_sysroot_upgrader_get_origin (upgrader);
origin_refspec = g_key_file_get_string (old_origin, "origin", "refspec", NULL);
if (!ostree_parse_refspec (origin_refspec, &origin_remote, &origin_ref, error))
goto out;
/* Allow just switching remotes */
if (g_str_has_suffix (new_provided_refspec, ":"))
{
new_remote = g_strdup (new_provided_refspec);
new_remote[strlen(new_remote)-1] = '\0';
new_ref = g_strdup (origin_ref);
}
else
{
if (!ostree_parse_refspec (new_provided_refspec, &new_remote, &new_ref, error))
goto out;
}
if (!new_remote)
remote = origin_remote;
else
remote = new_remote;
if (remote)
new_refspec = g_strconcat (remote, ":", new_ref, NULL);
else
new_refspec = g_strdup (new_ref);
if (strcmp (origin_refspec, new_refspec) == 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Old and new refs are equal: %s", new_refspec);
goto out;
}
new_origin = ostree_sysroot_origin_new_from_refspec (sysroot, new_refspec);
if (!ostree_sysroot_upgrader_set_origin (upgrader, new_origin, cancellable, error))
goto out;
{ g_auto(GLnxConsoleRef) console = { 0, };
glnx_console_lock (&console);
if (console.is_tty)
progress = ostree_async_progress_new_and_connect (ostree_repo_pull_default_console_progress_changed, &console);
/* Always allow older...there's not going to be a chronological
* relationship necessarily.
*/
if (!ostree_sysroot_upgrader_pull (upgrader, 0,
OSTREE_SYSROOT_UPGRADER_PULL_FLAGS_ALLOW_OLDER,
progress, &changed,
cancellable, error))
goto out;
if (progress)
ostree_async_progress_finish (progress);
}
if (!ostree_sysroot_upgrader_deploy (upgrader, cancellable, error))
goto out;
if (!ostree_sysroot_get_repo (sysroot, &repo, cancellable, error))
goto out;
if (!ostree_repo_prepare_transaction (repo, NULL, cancellable, error))
goto out;
g_print ("Deleting ref '%s:%s'\n", origin_remote, origin_ref);
ostree_repo_transaction_set_ref (repo, origin_remote, origin_ref, NULL);
if (!ostree_repo_commit_transaction (repo, NULL, cancellable, error))
goto out;
if (opt_reboot)
{
if (!ot_admin_execve_reboot (sysroot, error))
goto out;
}
ret = TRUE;
out:
return ret;
}
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