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wrap.c 59.33 KiB
/* pressure-vessel-wrap — run a program in a container that protects $HOME,
 * optionally using a Flatpak-style runtime.
 *
 * Contains code taken from Flatpak.
 *
 * Copyright © 2014-2019 Red Hat, Inc
 * Copyright © 2017-2020 Collabora Ltd.
 *
 * SPDX-License-Identifier: LGPL-2.1-or-later
 *
 * 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 2.1 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 <http://www.gnu.org/licenses/>.
 */

#include <glib.h>
#include <glib/gstdio.h>
#include <gio/gio.h>

#include <locale.h>
#include <stdlib.h>

#include "glib-backports.h"
#include "libglnx/libglnx.h"

#include "bwrap.h"
#include "bwrap-lock.h"
#include "flatpak-bwrap-private.h"
#include "flatpak-run-private.h"
#include "flatpak-utils-base-private.h"
#include "flatpak-utils-private.h"
#include "runtime.h"
#include "utils.h"
#include "wrap-interactive.h"

static gchar *
find_executable_dir (GError **error)
{
  g_autofree gchar *target = glnx_readlinkat_malloc (-1, "/proc/self/exe",
                                                     NULL, error);

  if (target == NULL)
    return glnx_prefix_error_null (error, "Unable to resolve /proc/self/exe");

  return g_path_get_dirname (target);
}

static gchar *
find_bwrap (const char *tools_dir)
{
  static const char * const flatpak_libexecdirs[] =
  {
    "/usr/local/libexec",
    "/usr/libexec",
    "/usr/lib/flatpak"
  };
  const char *tmp;
  g_autofree gchar *candidate = NULL;
  gsize i;

  g_return_val_if_fail (tools_dir != NULL, NULL);