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/*
* Copyright (C) 2012 Colin Walters <walters@verbum.org>
*
* SPDX-License-Identifier: LGPL-2.0+
*
* 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, see <https://www.gnu.org/licenses/>.
*
* Author: Colin Walters <walters@verbum.org>
*/
#include "config.h"
#include "libglnx.h"
#include "ot-admin-functions.h"
#include "otutil.h"
#include "ostree.h"
gboolean
ot_admin_require_booted_deployment_or_osname (OstreeSysroot *sysroot,
const char *osname,
GCancellable *cancellable,
GError **error)
{
OstreeDeployment *booted_deployment =
ostree_sysroot_get_booted_deployment (sysroot);
if (booted_deployment == NULL && osname == NULL)
return glnx_throw (error, "Not currently booted into an OSTree system and no --os= argument given");
return TRUE;
}
/**
* ot_admin_checksum_version:
* @checksum: A GVariant from an ostree checksum.
*
*
* Get the version metadata string from a commit variant object, if it exists.
*
* Returns: A newly allocated string of the version, or %NULL is none
*/
char *
ot_admin_checksum_version (GVariant *checksum)
{
g_autoptr(GVariant) metadata = NULL;
const char *ret = NULL;
metadata = g_variant_get_child_value (checksum, 0);
if (!g_variant_lookup (metadata, OSTREE_COMMIT_META_KEY_VERSION, "&s", &ret))
return NULL;
return g_strdup (ret);
}
OstreeDeployment *
ot_admin_get_indexed_deployment (OstreeSysroot *sysroot,
int index,
GError **error)
{
g_autoptr(GPtrArray) current_deployments =
ostree_sysroot_get_deployments (sysroot);
if (index < 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND,
"Invalid index %d", index);
return NULL;
}
if (index >= current_deployments->len)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND,
"Out of range deployment index %d, expected < %d", index,
current_deployments->len);
return NULL;
}
return g_object_ref (current_deployments->pdata[index]);
}
struct ContextState {
GMainContext *mainctx;
gboolean running;
};
static gboolean
on_sysroot_lock_timeout (gpointer user_data)
{
g_print ("Waiting for sysroot lock...\n");
return TRUE;
}
static void
on_sysroot_lock_acquired (OstreeSysroot *sysroot,
GAsyncResult *result,
struct ContextState *state)
{
state->running = FALSE;
g_main_context_wakeup (state->mainctx);
}
gboolean
ot_admin_sysroot_lock (OstreeSysroot *sysroot,
GError **error)
{
gboolean ret = FALSE;
gboolean acquired;
struct ContextState state = {
.mainctx = g_main_context_new (),
.running = TRUE,
};
g_main_context_push_thread_default (state.mainctx);
if (!ostree_sysroot_try_lock (sysroot, &acquired, error))
goto out;
if (!acquired)
{
GSource *timeout_src = g_timeout_source_new_seconds (3);
g_source_set_callback (timeout_src, (GSourceFunc)on_sysroot_lock_timeout, &state, NULL);
g_source_attach (timeout_src, state.mainctx);
g_source_unref (timeout_src);
on_sysroot_lock_timeout (&state);
ostree_sysroot_lock_async (sysroot, NULL, (GAsyncReadyCallback)on_sysroot_lock_acquired, &state);
while (state.running)
g_main_context_iteration (state.mainctx, TRUE);
}
ret = TRUE;
out:
g_main_context_pop_thread_default (state.mainctx);
g_main_context_unref (state.mainctx);
return ret;
}
gboolean
ot_admin_execve_reboot (OstreeSysroot *sysroot, GError **error)
{
OstreeDeployment *booted = ostree_sysroot_get_booted_deployment (sysroot);
/* If the sysroot isn't booted, we shouldn't reboot, even if somehow the user
* asked for it; might accidentally be specified in a build script, etc.
*/
if (!booted)
return TRUE;
if (execlp ("systemctl", "systemctl", "reboot", NULL) < 0)
return glnx_throw_errno_prefix (error, "execve(systemctl reboot)");
return TRUE;
}
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