-
Simon McVittie authored
As requested and later documented in <https://github.com/ValveSoftware/steam-for-linux/issues/6310>, Steam looks for compatibility tools in locations determined by this environment variable. Make them available in the container. When running in Flatpak, this will have no effect for compat tools in /app, but we should eventually get the Flatpak app's /app by a different route. Partial fix for https://github.com/ValveSoftware/steam-runtime/issues/302 (we also need to deal with compat tools in /usr/local/share and /usr/share, but that can't easily be done here, and is better addressed when we build the runtimes). Signed-off-by:
Simon McVittie <smcv@collabora.com>
Simon McVittie authoredAs requested and later documented in <https://github.com/ValveSoftware/steam-for-linux/issues/6310>, Steam looks for compatibility tools in locations determined by this environment variable. Make them available in the container. When running in Flatpak, this will have no effect for compat tools in /app, but we should eventually get the Flatpak app's /app by a different route. Partial fix for https://github.com/ValveSoftware/steam-runtime/issues/302 (we also need to deal with compat tools in /usr/local/share and /usr/share, but that can't easily be done here, and is better addressed when we build the runtimes). Signed-off-by:
Simon McVittie <smcv@collabora.com>
wrap.c 75.19 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 "steam-runtime-tools/glib-backports-internal.h"
#include "steam-runtime-tools/utils-internal.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"
/* List of variables that are stripped down from the environment when
* using the secure-execution mode.
* List taken from glibc sysdeps/generic/unsecvars.h */
static const char* unsecure_environment_variables[] = {
"GCONV_PATH",
"GETCONF_DIR",
"GLIBC_TUNABLES",
"HOSTALIASES",
"LD_AUDIT",
"LD_DEBUG",
"LD_DEBUG_OUTPUT",
"LD_DYNAMIC_WEAK",
"LD_HWCAP_MASK",
"LD_LIBRARY_PATH",
"LD_ORIGIN_PATH",
"LD_PRELOAD",
"LD_PROFILE",
"LD_SHOW_AUXV",
"LD_USE_LOAD_BIAS",
"LOCALDOMAIN",
"LOCPATH",
"MALLOC_TRACE",
"NIS_PATH",
"NLSPATH",
"RESOLV_HOST_CONF",
"RES_OPTIONS",
"TMPDIR",
"TZDIR",
NULL,
};
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);
tmp = g_getenv ("BWRAP");
if (tmp != NULL)
return g_strdup (tmp);
candidate = g_find_program_in_path ("bwrap");
if (candidate != NULL)
return g_steal_pointer (&candidate);
for (i = 0; i < G_N_ELEMENTS (flatpak_libexecdirs); i++)
{
candidate = g_build_filename (flatpak_libexecdirs[i],
"flatpak-bwrap", NULL);
if (g_file_test (candidate, G_FILE_TEST_IS_EXECUTABLE))
return g_steal_pointer (&candidate);
else
g_clear_pointer (&candidate, g_free);
}
candidate = g_build_filename (tools_dir, "bwrap", NULL);
if (g_file_test (candidate, G_FILE_TEST_IS_EXECUTABLE))
return g_steal_pointer (&candidate);
else
g_clear_pointer (&candidate, g_free);
return NULL;
}
static gchar *
check_bwrap (const char *tools_dir,
gboolean only_prepare)
{
g_autoptr(GError) local_error = NULL;
GError **error = &local_error;
g_autofree gchar *bwrap_executable = NULL;
const char *bwrap_test_argv[] =
{
NULL,
"--bind", "/", "/",
"true",
NULL
};
g_return_val_if_fail (tools_dir != NULL, NULL);
bwrap_executable = find_bwrap (tools_dir);
if (bwrap_executable == NULL)
{
g_warning ("Cannot find bwrap");
}
else if (only_prepare)
{
/* With --only-prepare we don't necessarily expect to be able to run
* it anyway (we are probably in a Docker container that doesn't allow
* creation of nested user namespaces), so just assume that it's the
* right one. */
return g_steal_pointer (&bwrap_executable);
}
else
{
int wait_status;
g_autofree gchar *child_stdout = NULL;
g_autofree gchar *child_stderr = NULL;
bwrap_test_argv[0] = bwrap_executable;
/* We use LEAVE_DESCRIPTORS_OPEN to work around a deadlock in older GLib,
* see flatpak_close_fds_workaround */
if (!g_spawn_sync (NULL, /* cwd */
(gchar **) bwrap_test_argv,
NULL, /* environ */
G_SPAWN_LEAVE_DESCRIPTORS_OPEN,
flatpak_bwrap_child_setup_cb, NULL,
&child_stdout,
&child_stderr,
&wait_status,
error))
{
g_warning ("Cannot run bwrap: %s", local_error->message);
g_clear_error (&local_error);
}
else if (wait_status != 0)
{
g_warning ("Cannot run bwrap: wait status %d", wait_status);
if (child_stdout != NULL && child_stdout[0] != '\0')
g_warning ("Output:\n%s", child_stdout);
if (child_stderr != NULL && child_stderr[0] != '\0')
g_warning ("Diagnostic output:\n%s", child_stderr);
}
else
{
return g_steal_pointer (&bwrap_executable);
}
}
return NULL;
}
static gchar *
check_flatpak_spawn (void)
{
g_autoptr(GError) local_error = NULL;
GError **error = &local_error;
g_autofree gchar *spawn_exec = NULL;
g_autofree gchar *child_stdout = NULL;
g_autofree gchar *child_stderr = NULL;
int wait_status;
const char *spawn_test_argv[] =
{
NULL,
"--host",
"--directory=/",
"true",
NULL
};
/* All known Flatpak runtimes have flatpak-spawn in the PATH */
spawn_exec = g_find_program_in_path ("flatpak-spawn");
if (spawn_exec == NULL
|| !g_file_test (spawn_exec, G_FILE_TEST_IS_EXECUTABLE))
return NULL;
spawn_test_argv[0] = spawn_exec;
if (!g_spawn_sync (NULL, /* cwd */
(gchar **) spawn_test_argv,
NULL, /* environ */
G_SPAWN_DEFAULT,
NULL, NULL, /* child setup */
&child_stdout,
&child_stderr,
&wait_status,
error))
{
g_warning ("Cannot run flatpak-spawn: %s", local_error->message);
g_clear_error (&local_error);
}
else if (wait_status != 0)
{
g_warning ("Cannot run flatpak-spawn: wait status %d", wait_status);
if (child_stdout != NULL && child_stdout[0] != '\0')
g_warning ("Output:\n%s", child_stdout);
if (child_stderr != NULL && child_stderr[0] != '\0')
g_warning ("Diagnostic output:\n%s", child_stderr);
}
else
{
return g_steal_pointer (&spawn_exec);
}
return NULL;
}
/*
* Export most root directories, but not the ones that
* "flatpak run --filesystem=host" would skip.
* (See flatpak_context_export(), which might replace this function
* later on.)
*
* If we are running inside Flatpak, we assume that any directory
* that is made available in the root, and is not in dont_mount_in_root,
* came in via --filesystem=host or similar and matches its equivalent
* on the real root filesystem.
*/
static gboolean
export_root_dirs_like_filesystem_host (FlatpakExports *exports,
FlatpakFilesystemMode mode,
GError **error)
{
g_autoptr(GDir) dir = NULL;
const char *member = NULL;
g_return_val_if_fail (exports != NULL, FALSE);
g_return_val_if_fail ((unsigned) mode <= FLATPAK_FILESYSTEM_MODE_LAST, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
dir = g_dir_open ("/", 0, error);
if (dir == NULL)
return FALSE;
for (member = g_dir_read_name (dir);
member != NULL;
member = g_dir_read_name (dir))
{
g_autofree gchar *path = NULL;
if (g_strv_contains (dont_mount_in_root, member))
continue;
path = g_build_filename ("/", member, NULL);
flatpak_exports_add_path_expose (exports, mode, path);
}
/* For parity with Flatpak's handling of --filesystem=host */
flatpak_exports_add_path_expose (exports, mode, "/run/media");
return TRUE;
}
/*
* This function assumes that /run on the host is the same as in the
* current namespace, so it won't work in Flatpak.
*/
static gboolean
export_contents_of_run (FlatpakBwrap *bwrap,
GError **error)
{
static const char *ignore[] =
{
"gfx", /* can be created by pressure-vessel */
"host", /* created by pressure-vessel */
"media", /* see export_root_dirs_like_filesystem_host() */
"pressure-vessel", /* created by pressure-vessel */
NULL
};
g_autoptr(GDir) dir = NULL;
const char *member = NULL;
g_return_val_if_fail (bwrap != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
g_return_val_if_fail (g_file_test ("/.flatpak-info", G_FILE_TEST_EXISTS),
FALSE);
dir = g_dir_open ("/run", 0, error);
if (dir == NULL)
return FALSE;
for (member = g_dir_read_name (dir);
member != NULL;
member = g_dir_read_name (dir))
{
g_autofree gchar *path = NULL;
if (g_strv_contains (ignore, member))
continue;
path = g_build_filename ("/run", member, NULL);
flatpak_bwrap_add_args (bwrap,
"--bind", path, path,
NULL);
}
return TRUE;
}
typedef enum
{
ENV_MOUNT_FLAGS_COLON_DELIMITED = (1 << 0),
ENV_MOUNT_FLAGS_DEPRECATED = (1 << 1),
ENV_MOUNT_FLAGS_READ_ONLY = (1 << 2),
ENV_MOUNT_FLAGS_NONE = 0
} EnvMountFlags;
typedef struct
{
const char *name;
EnvMountFlags flags;
} EnvMount;
static const EnvMount known_required_env[] =
{
{ "PRESSURE_VESSEL_FILESYSTEMS_RO",
ENV_MOUNT_FLAGS_READ_ONLY | ENV_MOUNT_FLAGS_COLON_DELIMITED },
{ "PRESSURE_VESSEL_FILESYSTEMS_RW", ENV_MOUNT_FLAGS_COLON_DELIMITED },
{ "STEAM_COMPAT_APP_LIBRARY_PATH", ENV_MOUNT_FLAGS_DEPRECATED },
{ "STEAM_COMPAT_APP_LIBRARY_PATHS",
ENV_MOUNT_FLAGS_COLON_DELIMITED | ENV_MOUNT_FLAGS_DEPRECATED },
{ "STEAM_COMPAT_CLIENT_INSTALL_PATH", ENV_MOUNT_FLAGS_NONE },
{ "STEAM_COMPAT_DATA_PATH", ENV_MOUNT_FLAGS_NONE },
{ "STEAM_COMPAT_INSTALL_PATH", ENV_MOUNT_FLAGS_NONE },
{ "STEAM_COMPAT_LIBRARY_PATHS", ENV_MOUNT_FLAGS_COLON_DELIMITED },
{ "STEAM_COMPAT_MOUNT_PATHS",
ENV_MOUNT_FLAGS_COLON_DELIMITED | ENV_MOUNT_FLAGS_DEPRECATED },
{ "STEAM_COMPAT_MOUNTS", ENV_MOUNT_FLAGS_COLON_DELIMITED },
{ "STEAM_COMPAT_SHADER_PATH", ENV_MOUNT_FLAGS_NONE },
{ "STEAM_COMPAT_TOOL_PATH", ENV_MOUNT_FLAGS_DEPRECATED },
{ "STEAM_COMPAT_TOOL_PATHS", ENV_MOUNT_FLAGS_COLON_DELIMITED },
{ "STEAM_EXTRA_COMPAT_TOOLS_PATHS", ENV_MOUNT_FLAGS_COLON_DELIMITED },
};
static void
bind_and_propagate_from_environ (FlatpakExports *exports,
FlatpakBwrap *bwrap,
const char *variable,
EnvMountFlags flags)
{
g_auto(GStrv) values = NULL;
FlatpakFilesystemMode mode = FLATPAK_FILESYSTEM_MODE_READ_WRITE;
const char *value;
const char *before;
const char *after;
gboolean changed = FALSE;
gsize i;
g_return_if_fail (exports != NULL);
g_return_if_fail (variable != NULL);
value = g_getenv (variable);
if (value == NULL)
return;
if (flags & ENV_MOUNT_FLAGS_DEPRECATED)
g_message ("Setting $%s is deprecated", variable);
if (flags & ENV_MOUNT_FLAGS_READ_ONLY)
mode = FLATPAK_FILESYSTEM_MODE_READ_ONLY;
if (flags & ENV_MOUNT_FLAGS_COLON_DELIMITED)
{
values = g_strsplit (value, ":", -1);
before = "...:";
after = ":...";
}
else
{
values = g_new0 (gchar *, 2);
values[0] = g_strdup (value);
values[1] = NULL;
before = "";
after = "";
}
for (i = 0; values[i] != NULL; i++)
{
g_autofree gchar *value_host = NULL;
g_autofree gchar *canon = NULL;
if (values[i][0] == '\0')
continue;
if (!g_file_test (values[i], G_FILE_TEST_EXISTS))
{
g_debug ("Not bind-mounting %s=\"%s%s%s\" because it does not exist",
variable, before, values[i], after);
continue;
}
canon = g_canonicalize_filename (values[i], NULL);
value_host = pv_current_namespace_path_to_host_path (canon);
g_debug ("Bind-mounting %s=\"%s%s%s\" from the current env as %s=\"%s%s%s\" in the host",
variable, before, values[i], after,
variable, before, value_host, after);
flatpak_exports_add_path_expose (exports, mode, canon);
if (strcmp (values[i], value_host) != 0)
{
g_clear_pointer (&values[i], g_free);
values[i] = g_steal_pointer (&value_host);
changed = TRUE;
}
}
if (changed || g_file_test ("/.flatpak-info", G_FILE_TEST_IS_REGULAR))
{
g_autofree gchar *joined = g_strjoinv (":", values);
flatpak_bwrap_set_env (bwrap, variable, joined, TRUE);
}
}
/* Order matters here: root, steam and steambeta are or might be symlinks
* to the root of the Steam installation, so we want to bind-mount their
* targets before we deal with the rest. */
static const char * const steam_api_subdirs[] =
{
"root", "steam", "steambeta", "bin", "bin32", "bin64", "sdk32", "sdk64",
};
static gboolean
use_fake_home (FlatpakExports *exports,
FlatpakBwrap *bwrap,
const gchar *fake_home,
GError **error)
{
const gchar *real_home = g_get_home_dir ();
g_autofree gchar *cache = g_build_filename (fake_home, ".cache", NULL);
g_autofree gchar *cache2 = g_build_filename (fake_home, "cache", NULL);
g_autofree gchar *tmp = g_build_filename (cache, "tmp", NULL);
g_autofree gchar *config = g_build_filename (fake_home, ".config", NULL);
g_autofree gchar *config2 = g_build_filename (fake_home, "config", NULL);
g_autofree gchar *local = g_build_filename (fake_home, ".local", NULL);
g_autofree gchar *data = g_build_filename (local, "share", NULL);
g_autofree gchar *data2 = g_build_filename (fake_home, "data", NULL);
g_autofree gchar *steam_pid = NULL;
g_autofree gchar *steam_pipe = NULL;
gsize i;
g_return_val_if_fail (bwrap != NULL, FALSE);
g_return_val_if_fail (exports != NULL, FALSE);
g_return_val_if_fail (fake_home != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
g_mkdir_with_parents (fake_home, 0700);
g_mkdir_with_parents (cache, 0700);
g_mkdir_with_parents (tmp, 0700);
g_mkdir_with_parents (config, 0700);
g_mkdir_with_parents (local, 0700);
g_mkdir_with_parents (data, 0700);
if (!g_file_test (cache2, G_FILE_TEST_EXISTS))
{
g_unlink (cache2);
if (symlink (".cache", cache2) != 0)
return glnx_throw_errno_prefix (error,
"Unable to create symlink %s -> .cache",
cache2);
}
if (!g_file_test (config2, G_FILE_TEST_EXISTS))
{
g_unlink (config2);
if (symlink (".config", config2) != 0)
return glnx_throw_errno_prefix (error,
"Unable to create symlink %s -> .config",
config2);
}
if (!g_file_test (data2, G_FILE_TEST_EXISTS))
{
g_unlink (data2);
if (symlink (".local/share", data2) != 0)
return glnx_throw_errno_prefix (error,
"Unable to create symlink %s -> .local/share",
data2);
}
flatpak_bwrap_add_args (bwrap,
"--bind", fake_home, real_home,
"--bind", tmp, "/var/tmp",
NULL);
flatpak_bwrap_set_env (bwrap, "XDG_CACHE_HOME", cache, TRUE);
flatpak_bwrap_set_env (bwrap, "XDG_CONFIG_HOME", config, TRUE);
flatpak_bwrap_set_env (bwrap, "XDG_DATA_HOME", data, TRUE);
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_WRITE,
fake_home);
/*
* These might be API entry points, according to Steam/steam.sh.
* They're usually symlinks into the Steam root, except for in
* older steam Debian packages that had Debian bug #916303.
*
* TODO: We probably want to hide part or all of root, steam,
* steambeta?
*/
for (i = 0; i < G_N_ELEMENTS (steam_api_subdirs); i++)
{
g_autofree gchar *dir = g_build_filename (real_home, ".steam",
steam_api_subdirs[i], NULL);
g_autofree gchar *mount_point = g_build_filename (fake_home, ".steam",
steam_api_subdirs[i],
NULL);
g_autofree gchar *target = NULL;
target = glnx_readlinkat_malloc (-1, dir, NULL, NULL);
if (target != NULL)
{
/* We used to bind-mount these directories, so transition them
* to symbolic links if we can. */
if (rmdir (mount_point) != 0 && errno != ENOENT && errno != ENOTDIR)
g_debug ("rmdir %s: %s", mount_point, g_strerror (errno));
/* Remove any symlinks that might have already been there. */
if (unlink (mount_point) != 0 && errno != ENOENT)
g_debug ("unlink %s: %s", mount_point, g_strerror (errno));
}
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_ONLY,
dir);
}
/* steamclient.so relies on this for communication with Steam */
steam_pid = g_build_filename (real_home, ".steam", "steam.pid", NULL);
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_ONLY,
steam_pid);
/* Make sure Steam IPC is available.
* TODO: do we need this? do we need more? */
steam_pipe = g_build_filename (real_home, ".steam", "steam.pipe", NULL);
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_WRITE,
steam_pipe);
return TRUE;
}
/*
* @bwrap: Arguments produced by flatpak_exports_append_bwrap_args(),
* not including an executable name (the 0'th argument must be
* `--bind` or similar)
* @home: The home directory
*
* Adjust arguments in @bwrap to cope with potentially running in a
* container.
*/
static void
adjust_exports (FlatpakBwrap *bwrap,
const char *home)
{
gsize i = 0;
while (i < bwrap->argv->len)
{
const char *opt = bwrap->argv->pdata[i];
g_assert (opt != NULL);
if (g_str_equal (opt, "--symlink"))
{
g_assert (i + 3 <= bwrap->argv->len);
/* pdata[i + 1] is the target: unchanged. */
/* pdata[i + 2] is a path in the final container: unchanged. */
i += 3;
}
else if (g_str_equal (opt, "--dir") ||
g_str_equal (opt, "--tmpfs"))
{
g_assert (i + 2 <= bwrap->argv->len);
/* pdata[i + 1] is a path in the final container: unchanged. */
i += 2;
}
else if (g_str_equal (opt, "--ro-bind") ||
g_str_equal (opt, "--bind"))
{
g_autofree gchar *src = NULL;
g_assert (i + 3 <= bwrap->argv->len);
src = g_steal_pointer (&bwrap->argv->pdata[i + 1]);
/* pdata[i + 2] is a path in the final container: unchanged. */
/* Paths in the home directory might need adjusting.
* Paths outside the home directory do not: if they're part of
* /run/host, they've been adjusted already by
* flatpak_exports_take_host_fd(), and if not, they appear in
* the container with the same path as on the host. */
if (flatpak_has_path_prefix (src, home))
bwrap->argv->pdata[i + 1] = pv_current_namespace_path_to_host_path (src);
else
bwrap->argv->pdata[i + 1] = g_steal_pointer (&src);
i += 3;
}
else
{
g_return_if_reached ();
}
}
}
typedef enum
{
TRISTATE_NO = 0,
TRISTATE_YES,
TRISTATE_MAYBE
} Tristate;
static gboolean opt_batch = FALSE;
static char *opt_copy_runtime_into = NULL;
static char **opt_env_if_host = NULL;
static char *opt_fake_home = NULL;
static char **opt_filesystems = NULL;
static char *opt_freedesktop_app_id = NULL;
static char *opt_steam_app_id = NULL;
static gboolean opt_gc_runtimes = TRUE;
static gboolean opt_generate_locales = TRUE;
static char *opt_home = NULL;
static gboolean opt_host_fallback = FALSE;
static char *opt_graphics_provider = NULL;
static char *graphics_provider_mount_point = NULL;
static gboolean opt_launcher = FALSE;
static gboolean opt_only_prepare = FALSE;
static gboolean opt_remove_game_overlay = FALSE;
static PvShell opt_shell = PV_SHELL_NONE;
static GPtrArray *opt_ld_preload = NULL;
static GArray *opt_pass_fds = NULL;
static char *opt_runtime_base = NULL;
static char *opt_runtime = NULL;
static Tristate opt_share_home = TRISTATE_MAYBE;
static gboolean opt_share_pid = TRUE;
static double opt_terminate_idle_timeout = 0.0;
static double opt_terminate_timeout = -1.0;
static gboolean opt_verbose = FALSE;
static gboolean opt_version = FALSE;
static gboolean opt_version_only = FALSE;
static gboolean opt_test = FALSE;
static PvTerminal opt_terminal = PV_TERMINAL_AUTO;
static char *opt_write_bwrap = NULL;
static gboolean
opt_host_ld_preload_cb (const gchar *option_name,
const gchar *value,
gpointer data,
GError **error)
{
gchar *preload = g_strdup_printf ("host:%s", value);
if (opt_ld_preload == NULL)
opt_ld_preload = g_ptr_array_new_with_free_func (g_free);
g_ptr_array_add (opt_ld_preload, g_steal_pointer (&preload));
return TRUE;
}
static gboolean
opt_pass_fd_cb (const char *name,
const char *value,
gpointer data,
GError **error)
{
char *endptr;
gint64 i64 = g_ascii_strtoll (value, &endptr, 10);
int fd;
int fd_flags;
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
g_return_val_if_fail (value != NULL, FALSE);
if (i64 < 0 || i64 > G_MAXINT || endptr == value || *endptr != '\0')
{
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE,
"Integer out of range or invalid: %s", value);
return FALSE;
}
fd = (int) i64;
fd_flags = fcntl (fd, F_GETFD);
if (fd_flags < 0)
return glnx_throw_errno_prefix (error, "Unable to receive --fd %d", fd);
if (opt_pass_fds == NULL)
opt_pass_fds = g_array_new (FALSE, FALSE, sizeof (int));
g_array_append_val (opt_pass_fds, fd);
return TRUE;
}
static gboolean
opt_shell_cb (const gchar *option_name,
const gchar *value,
gpointer data,
GError **error)
{
if (g_strcmp0 (option_name, "--shell-after") == 0)
value = "after";
else if (g_strcmp0 (option_name, "--shell-fail") == 0)
value = "fail";
else if (g_strcmp0 (option_name, "--shell-instead") == 0)
value = "instead";
if (value == NULL || *value == '\0')
{
opt_shell = PV_SHELL_NONE;
return TRUE;
}
switch (value[0])
{
case 'a':
if (g_strcmp0 (value, "after") == 0)
{
opt_shell = PV_SHELL_AFTER;
return TRUE;
}
break;
case 'f':
if (g_strcmp0 (value, "fail") == 0)
{
opt_shell = PV_SHELL_FAIL;
return TRUE;
}
break;
case 'i':
if (g_strcmp0 (value, "instead") == 0)
{
opt_shell = PV_SHELL_INSTEAD;
return TRUE;
}
break;
case 'n':
if (g_strcmp0 (value, "none") == 0 || g_strcmp0 (value, "no") == 0)
{
opt_shell = PV_SHELL_NONE;
return TRUE;
}
break;
default:
/* fall through to error */
break;
}
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
"Unknown choice \"%s\" for %s", value, option_name);
return FALSE;
}
static gboolean
opt_terminal_cb (const gchar *option_name,
const gchar *value,
gpointer data,
GError **error)
{
if (g_strcmp0 (option_name, "--tty") == 0)
value = "tty";
else if (g_strcmp0 (option_name, "--xterm") == 0)
value = "xterm";
if (value == NULL || *value == '\0')
{
opt_terminal = PV_TERMINAL_AUTO;
return TRUE;
}
switch (value[0])
{
case 'a':
if (g_strcmp0 (value, "auto") == 0)
{
opt_terminal = PV_TERMINAL_AUTO;
return TRUE;
}
break;
case 'n':
if (g_strcmp0 (value, "none") == 0 || g_strcmp0 (value, "no") == 0)
{
opt_terminal = PV_TERMINAL_NONE;
return TRUE;
}
break;
case 't':
if (g_strcmp0 (value, "tty") == 0)
{
opt_terminal = PV_TERMINAL_TTY;
return TRUE;
}
break;
case 'x':
if (g_strcmp0 (value, "xterm") == 0)
{
opt_terminal = PV_TERMINAL_XTERM;
return TRUE;
}
break;
default:
/* fall through to error */
break;
}
g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
"Unknown choice \"%s\" for %s", value, option_name);
return FALSE;
}
static gboolean
opt_share_home_cb (const gchar *option_name,
const gchar *value,
gpointer data,
GError **error)
{
if (g_strcmp0 (option_name, "--share-home") == 0)
opt_share_home = TRISTATE_YES;
else if (g_strcmp0 (option_name, "--unshare-home") == 0)
opt_share_home = TRISTATE_NO;
else
g_return_val_if_reached (FALSE);
return TRUE;
}
static gboolean
opt_with_host_graphics_cb (const gchar *option_name,
const gchar *value,
gpointer data,
GError **error)
{
/* This is the old way to get the graphics from the host system */
if (g_strcmp0 (option_name, "--with-host-graphics") == 0)
{
if (g_file_test ("/run/host", G_FILE_TEST_IS_DIR))
opt_graphics_provider = g_strdup ("/run/host");
else
opt_graphics_provider = g_strdup ("/");
}
/* This is the old way to avoid using graphics from the host */
else if (g_strcmp0 (option_name, "--without-host-graphics") == 0)
{
opt_graphics_provider = g_strdup ("");
}
else
{
g_return_val_if_reached (FALSE);
}
g_warning ("\"--with-host-graphics\" and \"--without-host-graphics\" have "
"been deprecated and could be removed in future releases. Please use "
"use \"--graphics-provider=/\", \"--graphics-provider=/run/host\" or "
"\"--graphics-provider=\" instead.");
return TRUE;
}
static GOptionEntry options[] =
{
{ "batch", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_batch,
"Disable all interactivity and redirection: ignore --shell*, "
"--terminal, --xterm, --tty. [Default: if $PRESSURE_VESSEL_BATCH]", NULL },
{ "copy-runtime-into", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME, &opt_copy_runtime_into,
"If a --runtime is used, copy it into DIR and edit the copy in-place. "
"[Default: $PRESSURE_VESSEL_COPY_RUNTIME_INTO or empty]",
"DIR" },
{ "env-if-host", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_STRING_ARRAY, &opt_env_if_host,
"Set VAR=VAL if COMMAND is run with /usr from the host system, "
"but not if it is run with /usr from RUNTIME.", "VAR=VAL" },
{ "filesystem", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME_ARRAY, &opt_filesystems,
"Share filesystem directories with the container. "
"They must currently be given as absolute paths.",
"PATH" },
{ "freedesktop-app-id", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_STRING, &opt_freedesktop_app_id,
"Make --unshare-home use ~/.var/app/ID as home directory, where ID "
"is com.example.MyApp or similar. This interoperates with Flatpak. "
"[Default: $PRESSURE_VESSEL_FDO_APP_ID if set]",
"ID" },
{ "steam-app-id", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_STRING, &opt_steam_app_id,
"Make --unshare-home use ~/.var/app/com.steampowered.AppN "
"as home directory. [Default: $STEAM_COMPAT_APP_ID or $SteamAppId]",
"N" },
{ "gc-runtimes", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_gc_runtimes,
"If using --copy-runtime-into, garbage-collect old temporary "
"runtimes. [Default, unless $PRESSURE_VESSEL_GC_RUNTIMES is 0]",
NULL },
{ "no-gc-runtimes", '\0',
G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &opt_gc_runtimes,
"If using --copy-runtime-into, don't garbage-collect old "
"temporary runtimes.", NULL },
{ "generate-locales", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_generate_locales,
"If using --runtime, attempt to generate any missing locales. "
"[Default, unless $PRESSURE_VESSEL_GENERATE_LOCALES is 0]",
NULL },
{ "no-generate-locales", '\0',
G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &opt_generate_locales,
"If using --runtime, don't generate any missing locales.", NULL },
{ "home", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME, &opt_home,
"Use HOME as home directory. Implies --unshare-home. "
"[Default: $PRESSURE_VESSEL_HOME if set]", "HOME" },
{ "host-fallback", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_host_fallback,
"Run COMMAND on the host system if we cannot run it in a container.", NULL },
{ "host-ld-preload", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_CALLBACK, &opt_host_ld_preload_cb,
"Add MODULE from the host system to LD_PRELOAD when executing COMMAND.",
"MODULE" },
{ "graphics-provider", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME, &opt_graphics_provider,
"If using --runtime, use PATH as the graphics provider. "
"The path is assumed to be relative to the current namespace, "
"and will be adjusted for use on the host system if pressure-vessel "
"is run in a container. The empty string means use the graphics "
"stack from container."
"[Default: $PRESSURE_VESSEL_GRAPHICS_PROVIDER or '/run/host' or '/']", "PATH" },
{ "launcher", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_launcher,
"Instead of specifying a command with its arguments to execute, all the "
"elements after '--' will be used as arguments for "
"'pressure-vessel-launcher'. All the environment variables that are "
"edited by pressure-vessel, or that are known to be wrong in the new "
"container, or that needs to inherit the value from the host system, "
"will be locked. This option implies --batch.", NULL },
{ "pass-fd", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_CALLBACK, opt_pass_fd_cb,
"Let the launched process inherit the given fd.",
NULL },
{ "remove-game-overlay", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_remove_game_overlay,
"Disable the Steam Overlay. "
"[Default if $PRESSURE_VESSEL_REMOVE_GAME_OVERLAY is 1]",
NULL },
{ "keep-game-overlay", '\0',
G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &opt_remove_game_overlay,
"Do not disable the Steam Overlay. "
"[Default unless $PRESSURE_VESSEL_REMOVE_GAME_OVERLAY is 1]",
NULL },
{ "runtime", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME, &opt_runtime,
"Mount the given sysroot or merged /usr in the container, and augment "
"it with the provider's graphics stack. The empty string "
"means don't use a runtime. [Default: $PRESSURE_VESSEL_RUNTIME or '']",
"RUNTIME" },
{ "runtime-base", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME, &opt_runtime_base,
"If a --runtime is a relative path, look for it relative to BASE. "
"[Default: $PRESSURE_VESSEL_RUNTIME_BASE or '.']",
"BASE" },
{ "share-home", '\0',
G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, opt_share_home_cb,
"Use the real home directory. "
"[Default unless $PRESSURE_VESSEL_HOME is set or "
"$PRESSURE_VESSEL_SHARE_HOME is 0]",
NULL },
{ "unshare-home", '\0',
G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, opt_share_home_cb,
"Use an app-specific home directory chosen according to --home, "
"--freedesktop-app-id, --steam-app-id or $STEAM_COMPAT_APP_ID. "
"[Default if $PRESSURE_VESSEL_HOME is set or "
"$PRESSURE_VESSEL_SHARE_HOME is 0]",
NULL },
{ "share-pid", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_share_pid,
"Do not create a new process ID namespace for the app. "
"[Default, unless $PRESSURE_VESSEL_SHARE_PID is 0]",
NULL },
{ "unshare-pid", '\0',
G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE, &opt_share_pid,
"Create a new process ID namespace for the app. "
"[Default if $PRESSURE_VESSEL_SHARE_PID is 0]",
NULL },
{ "shell", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_CALLBACK, opt_shell_cb,
"--shell=after is equivalent to --shell-after, and so on. "
"[Default: $PRESSURE_VESSEL_SHELL or 'none']",
"{none|after|fail|instead}" },
{ "shell-after", '\0',
G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, opt_shell_cb,
"Run an interactive shell after COMMAND. Executing \"$@\" in that "
"shell will re-run COMMAND [ARGS].",
NULL },
{ "shell-fail", '\0',
G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, opt_shell_cb,
"Run an interactive shell after COMMAND, but only if it fails.",
NULL },
{ "shell-instead", '\0',
G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, opt_shell_cb,
"Run an interactive shell instead of COMMAND. Executing \"$@\" in that "
"shell will run COMMAND [ARGS].",
NULL },
{ "terminal", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_CALLBACK, opt_terminal_cb,
"none: disable features that would use a terminal; "
"auto: equivalent to xterm if a --shell option is used, or none; "
"xterm: put game output (and --shell if used) in an xterm; "
"tty: put game output (and --shell if used) on Steam's "
"controlling tty "
"[Default: $PRESSURE_VESSEL_TERMINAL or 'auto']",
"{none|auto|xterm|tty}" },
{ "tty", '\0',
G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, opt_terminal_cb,
"Equivalent to --terminal=tty", NULL },
{ "xterm", '\0',
G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, opt_terminal_cb,
"Equivalent to --terminal=xterm", NULL },
{ "terminate-idle-timeout", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_DOUBLE, &opt_terminate_idle_timeout,
"If --terminate-timeout is used, wait this many seconds before "
"sending SIGTERM. [default: 0.0]",
"SECONDS" },
{ "terminate-timeout", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_DOUBLE, &opt_terminate_timeout,
"Send SIGTERM and SIGCONT to descendant processes that didn't "
"exit within --terminate-idle-timeout. If they don't all exit within "
"this many seconds, send SIGKILL and SIGCONT to survivors. If 0.0, "
"skip SIGTERM and use SIGKILL immediately. Implies --subreaper. "
"[Default: -1.0, meaning don't signal].",
"SECONDS" },
{ "verbose", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_verbose,
"Be more verbose.", NULL },
{ "version", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_version,
"Print version number and exit.", NULL },
{ "version-only", '\0',
G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_NONE, &opt_version_only,
"Print version number (no other information) and exit.", NULL },
{ "with-host-graphics", '\0',
G_OPTION_FLAG_NO_ARG | G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_CALLBACK,
opt_with_host_graphics_cb,
"Deprecated alias for \"--graphics-provider=/\" or "
"\"--graphics-provider=/run/host\"", NULL },
{ "without-host-graphics", '\0',
G_OPTION_FLAG_NO_ARG | G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_CALLBACK,
opt_with_host_graphics_cb,
"Deprecated alias for \"--graphics-provider=\"", NULL },
{ "write-bwrap-arguments", '\0',
G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_FILENAME, &opt_write_bwrap,
"Write the final bwrap arguments, as null terminated strings, to the "
"given file path.", "PATH" },
{ "test", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_test,
"Smoke test pressure-vessel-wrap and exit.", NULL },
{ "only-prepare", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &opt_only_prepare,
"Prepare runtime, but do not actually run anything.", NULL },
{ NULL }
};
static Tristate
tristate_environment (const gchar *name)
{
const gchar *value = g_getenv (name);
if (g_strcmp0 (value, "1") == 0)
return TRISTATE_YES;
if (g_strcmp0 (value, "0") == 0)
return TRISTATE_NO;
if (value != NULL && value[0] != '\0')
g_warning ("Unrecognised value \"%s\" for $%s", value, name);
return TRISTATE_MAYBE;
}
static int my_pid = -1;
static void
cli_log_func (const gchar *log_domain,
GLogLevelFlags log_level,
const gchar *message,
gpointer user_data)
{
g_printerr ("%s[%d]: %s\n", (const char *) user_data, my_pid, message);
}
int
main (int argc,
char *argv[])
{
g_autoptr(GOptionContext) context = NULL;
g_autoptr(GError) local_error = NULL;
GError **error = &local_error;
int ret = 2;
gsize i;
g_auto(GStrv) original_argv = NULL;
g_auto(GStrv) original_environ = NULL;
int original_argc = argc;
gboolean is_flatpak_env = g_file_test ("/.flatpak-info", G_FILE_TEST_IS_REGULAR);
g_autoptr(FlatpakBwrap) bwrap = NULL;
g_autoptr(FlatpakBwrap) exports_bwrap = NULL;
g_autoptr(FlatpakExports) exports = NULL;
g_autoptr(FlatpakBwrap) adverb_args = NULL;
g_autofree gchar *adverb_in_container = NULL;
g_autoptr(FlatpakBwrap) wrapped_command = NULL;
g_autofree gchar *spawn_executable = NULL;
g_autofree gchar *bwrap_executable = NULL;
g_autoptr(GString) adjusted_ld_preload = g_string_new ("");
g_autofree gchar *cwd_p = NULL;
g_autofree gchar *cwd_l = NULL;
g_autofree gchar *cwd_p_host = NULL;
const gchar *home;
g_autofree gchar *bwrap_help = NULL;
g_autofree gchar *tools_dir = NULL;
const gchar *bwrap_help_argv[] = { "<bwrap>", "--help", NULL };
g_autoptr(PvRuntime) runtime = NULL;
g_autoptr(FILE) original_stdout = NULL;
GHashTableIter iter;
const gchar *env_var;
g_autoptr(GString) lock_env = g_string_new ("");
g_auto(GLnxTmpfile) lock_env_tmpf = { 0, };
gpointer k;
g_autoptr(GHashTable) extra_locked_vars_to_unset = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free, NULL);
g_autoptr(GHashTable) extra_locked_vars_to_inherit = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free, NULL);
g_autofree char *lock_env_fd = NULL;
my_pid = getpid ();
setlocale (LC_ALL, "");
g_set_prgname ("pressure-vessel-wrap");
g_log_set_handler (G_LOG_DOMAIN,
G_LOG_LEVEL_WARNING | G_LOG_LEVEL_MESSAGE,
cli_log_func, (void *) g_get_prgname ());
original_argv = g_new0 (char *, argc + 1);
for (i = 0; i < argc; i++)
original_argv[i] = g_strdup (argv[i]);
if (g_getenv ("STEAM_RUNTIME") != NULL)
{
g_printerr ("%s: This program should not be run in the Steam Runtime.",
g_get_prgname ());
g_printerr ("%s: Use pressure-vessel-unruntime instead.",
g_get_prgname ());
ret = 2;
goto out;
}
original_environ = g_get_environ ();
/* Set defaults */
opt_batch = pv_boolean_environment ("PRESSURE_VESSEL_BATCH", FALSE);
opt_freedesktop_app_id = g_strdup (g_getenv ("PRESSURE_VESSEL_FDO_APP_ID"));
if (opt_freedesktop_app_id != NULL && opt_freedesktop_app_id[0] == '\0')
g_clear_pointer (&opt_freedesktop_app_id, g_free);
opt_home = g_strdup (g_getenv ("PRESSURE_VESSEL_HOME"));
if (opt_home != NULL && opt_home[0] == '\0')
g_clear_pointer (&opt_home, g_free);
opt_remove_game_overlay = pv_boolean_environment ("PRESSURE_VESSEL_REMOVE_GAME_OVERLAY",
FALSE);
opt_share_home = tristate_environment ("PRESSURE_VESSEL_SHARE_HOME");
opt_gc_runtimes = pv_boolean_environment ("PRESSURE_VESSEL_GC_RUNTIMES", TRUE);
opt_generate_locales = pv_boolean_environment ("PRESSURE_VESSEL_GENERATE_LOCALES", TRUE);
opt_share_pid = pv_boolean_environment ("PRESSURE_VESSEL_SHARE_PID", TRUE);
opt_verbose = pv_boolean_environment ("PRESSURE_VESSEL_VERBOSE", FALSE);
if (!opt_shell_cb ("$PRESSURE_VESSEL_SHELL",
g_getenv ("PRESSURE_VESSEL_SHELL"), NULL, error))
goto out;
if (!opt_terminal_cb ("$PRESSURE_VESSEL_TERMINAL",
g_getenv ("PRESSURE_VESSEL_TERMINAL"), NULL, error))
goto out;
context = g_option_context_new ("[--] COMMAND [ARGS]\n"
"Run COMMAND [ARGS] in a container.\n");
g_option_context_add_main_entries (context, options, NULL);
if (!g_option_context_parse (context, &argc, &argv, error))
goto out;
if (opt_runtime == NULL)
opt_runtime = g_strdup (g_getenv ("PRESSURE_VESSEL_RUNTIME"));
if (opt_runtime_base == NULL)
opt_runtime_base = g_strdup (g_getenv ("PRESSURE_VESSEL_RUNTIME_BASE"));
if (opt_runtime != NULL
&& opt_runtime[0] != '\0'
&& !g_path_is_absolute (opt_runtime)
&& opt_runtime_base != NULL
&& opt_runtime_base[0] != '\0')
{
g_autofree gchar *tmp = g_steal_pointer (&opt_runtime);
opt_runtime = g_build_filename (opt_runtime_base, tmp, NULL);
}
if (opt_copy_runtime_into == NULL)
opt_copy_runtime_into = g_strdup (g_getenv ("PRESSURE_VESSEL_COPY_RUNTIME_INTO"));
if (opt_copy_runtime_into != NULL
&& opt_copy_runtime_into[0] == '\0')
opt_copy_runtime_into = NULL;
if (opt_graphics_provider == NULL)
opt_graphics_provider = g_strdup (g_getenv ("PRESSURE_VESSEL_GRAPHICS_PROVIDER"));
if (opt_graphics_provider == NULL)
{
/* Also check the deprecated 'PRESSURE_VESSEL_HOST_GRAPHICS' */
if (!pv_boolean_environment ("PRESSURE_VESSEL_HOST_GRAPHICS", TRUE))
opt_graphics_provider = g_strdup ("");
else if (g_file_test ("/run/host", G_FILE_TEST_IS_DIR))
opt_graphics_provider = g_strdup ("/run/host");
else
opt_graphics_provider = g_strdup ("/");
}
g_assert (opt_graphics_provider != NULL);
if (opt_graphics_provider[0] != '\0' && opt_graphics_provider[0] != '/')
{
g_printerr ("%s: --graphics-provider path must be absolute, not \"%s\"\n",
g_get_prgname (), opt_graphics_provider);
goto out;
}
if (g_strcmp0 (opt_graphics_provider, "/") == 0)
graphics_provider_mount_point = g_strdup ("/run/host");
else
graphics_provider_mount_point = g_strdup ("/run/gfx");
if (opt_version_only)
{
g_print ("%s\n", VERSION);
ret = 0;
goto out;
}
if (opt_version)
{
g_print ("%s:\n"
" Package: pressure-vessel\n"
" Version: %s\n",
argv[0], VERSION);
ret = 0;
goto out;
}
original_stdout = _srt_divert_stdout_to_stderr (error);
if (original_stdout == NULL)
{
ret = 1;
goto out;
}
_srt_setenv_disable_gio_modules ();
if (argc < 2 && !opt_test && !opt_only_prepare)
{
g_printerr ("%s: An executable to run is required\n",
g_get_prgname ());
goto out;
}
if (opt_terminal == PV_TERMINAL_AUTO)
{
if (opt_shell != PV_SHELL_NONE)
opt_terminal = PV_TERMINAL_XTERM;
else
opt_terminal = PV_TERMINAL_NONE;
}
if (opt_terminal == PV_TERMINAL_NONE && opt_shell != PV_SHELL_NONE)
{
g_printerr ("%s: --terminal=none is incompatible with --shell\n",
g_get_prgname ());
goto out;
}
/* --launcher implies --batch */
if (opt_launcher)
opt_batch = TRUE;
if (opt_batch)
{
/* --batch or PRESSURE_VESSEL_BATCH=1 overrides these */
opt_shell = PV_SHELL_NONE;
opt_terminal = PV_TERMINAL_NONE;
}
if (argc > 1 && strcmp (argv[1], "--") == 0)
{
argv++;
argc--;
}
home = g_get_home_dir ();
if (opt_share_home == TRISTATE_YES)
{
opt_fake_home = NULL;
}
else if (opt_home)
{
opt_fake_home = g_strdup (opt_home);
}
else if (opt_share_home == TRISTATE_MAYBE)
{
opt_fake_home = NULL;
}
else if (opt_freedesktop_app_id)
{
opt_fake_home = g_build_filename (home, ".var", "app",
opt_freedesktop_app_id, NULL);
}
else if (opt_steam_app_id)
{
opt_freedesktop_app_id = g_strdup_printf ("com.steampowered.App%s",
opt_steam_app_id);
opt_fake_home = g_build_filename (home, ".var", "app",
opt_freedesktop_app_id, NULL);
}
else if (g_getenv ("STEAM_COMPAT_APP_ID") != NULL)
{
opt_freedesktop_app_id = g_strdup_printf ("com.steampowered.App%s",
g_getenv ("STEAM_COMPAT_APP_ID"));
opt_fake_home = g_build_filename (home, ".var", "app",
opt_freedesktop_app_id, NULL);
}
else if (g_getenv ("SteamAppId") != NULL)
{
opt_freedesktop_app_id = g_strdup_printf ("com.steampowered.App%s",
g_getenv ("SteamAppId"));
opt_fake_home = g_build_filename (home, ".var", "app",
opt_freedesktop_app_id, NULL);
}
else
{
g_printerr ("%s: Either --home, --freedesktop-app-id, --steam-app-id "
"or $SteamAppId is required\n",
g_get_prgname ());
goto out;
}
if (opt_env_if_host != NULL)
{
for (i = 0; opt_env_if_host[i] != NULL; i++)
{
const char *equals = strchr (opt_env_if_host[i], '=');
if (equals == NULL)
{
g_printerr ("%s: --env-if-host argument must be of the form "
"NAME=VALUE, not \"%s\"\n",
g_get_prgname (), opt_env_if_host[i]);
goto out;
}
}
}
if (opt_only_prepare && opt_test)
{
g_printerr ("%s: --only-prepare and --test are mutually exclusive",
g_get_prgname ());
goto out;
}
if (opt_filesystems != NULL)
{
for (i = 0; opt_filesystems[i] != NULL; i++)
{
if (strchr (opt_filesystems[i], ':') != NULL ||
strchr (opt_filesystems[i], '\\') != NULL)
{
g_printerr ("%s: ':' and '\\' in --filesystem argument "
"not handled yet\n",
g_get_prgname ());
goto out;
}
else if (!g_path_is_absolute (opt_filesystems[i]))
{
g_printerr ("%s: --filesystem argument must be an absolute "
"path, not \"%s\"\n",
g_get_prgname (), opt_filesystems[i]);
goto out;
}
}
}
/* Finished parsing arguments, so any subsequent failures will make
* us exit 1. */
ret = 1;
if (opt_terminal != PV_TERMINAL_TTY)
{
int fd;
if (!glnx_openat_rdonly (-1, "/dev/null", TRUE, &fd, error))
goto out;
if (dup2 (fd, STDIN_FILENO) < 0)
{
glnx_throw_errno_prefix (error,
"Cannot replace stdin with /dev/null");
goto out;
}
}
pv_get_current_dirs (&cwd_p, &cwd_l);
if (opt_verbose)
{
g_auto(GStrv) env = g_strdupv (original_environ);
g_log_set_handler (G_LOG_DOMAIN,
G_LOG_LEVEL_DEBUG | G_LOG_LEVEL_INFO,
cli_log_func, (void *) g_get_prgname ());
g_message ("Original argv:");
for (i = 0; i < original_argc; i++)
{
g_autofree gchar *quoted = g_shell_quote (original_argv[i]);
g_message ("\t%" G_GSIZE_FORMAT ": %s", i, quoted);
}
g_message ("Current working directory:");
g_message ("\tPhysical: %s", cwd_p);
g_message ("\tLogical: %s", cwd_l);
g_message ("Environment variables:");
qsort (env, g_strv_length (env), sizeof (char *), pv_envp_cmp);
for (i = 0; env[i] != NULL; i++)
{
g_autofree gchar *quoted = g_shell_quote (env[i]);
g_message ("\t%s", quoted);
}
g_message ("Wrapped command:");
for (i = 1; i < argc; i++)
{
g_autofree gchar *quoted = g_shell_quote (argv[i]);
g_message ("\t%" G_GSIZE_FORMAT ": %s", i, quoted);
}
}
tools_dir = find_executable_dir (error);
if (tools_dir == NULL)
goto out;
g_debug ("Found executable directory: %s", tools_dir);
wrapped_command = flatpak_bwrap_new (flatpak_bwrap_empty_env);
if (argc > 1 && argv[1][0] == '-' && !opt_launcher)
{
/* Make sure wrapped_command is something we can validly pass to env(1) */
if (strchr (argv[1], '=') != NULL)
flatpak_bwrap_add_args (wrapped_command,
"sh", "-euc", "exec \"$@\"", "sh",
NULL);
/* Make sure bwrap will interpret wrapped_command as the end of its
* options */
flatpak_bwrap_add_arg (wrapped_command, "env");
}
g_debug ("Setting arguments for wrapped command");
flatpak_bwrap_append_argsv (wrapped_command, &argv[1], argc - 1);
/* If we are in a Flatpak environment we can't use bwrap directly */
if (is_flatpak_env)
{
g_debug ("Checking for flatpak-spawn...");
spawn_executable = check_flatpak_spawn ();
/* Assume "bwrap" to exist in the host system and to be in its PATH */
bwrap_executable = g_strdup ("bwrap");
}
else
{
g_debug ("Checking for bwrap...");
bwrap_executable = check_bwrap (tools_dir, opt_only_prepare);
}
if (opt_test)
{
if ((is_flatpak_env && spawn_executable == NULL)
|| bwrap_executable == NULL)
{
ret = 1;
goto out;
}
else
{
if (spawn_executable != NULL)
g_debug ("OK (%s) (%s)", spawn_executable, bwrap_executable);
else
g_debug ("OK (%s)", bwrap_executable);
ret = 0;
goto out;
}
}
if ((is_flatpak_env && spawn_executable == NULL)
|| bwrap_executable == NULL)
{
/* TODO in a Flatpak environment, host is not what we expect it to be */
if (opt_host_fallback)
{
g_message ("Falling back to executing wrapped command directly");
if (opt_env_if_host != NULL)
{
for (i = 0; opt_env_if_host[i] != NULL; i++)
{
char *equals = strchr (opt_env_if_host[i], '=');
g_assert (equals != NULL);
*equals = '\0';
flatpak_bwrap_set_env (wrapped_command, opt_env_if_host[i],
equals + 1, TRUE);
}
}
flatpak_bwrap_finish (wrapped_command);
/* flatpak_bwrap_finish did this */
g_assert (g_ptr_array_index (wrapped_command->argv,
wrapped_command->argv->len - 1) == NULL);
execvpe (g_ptr_array_index (wrapped_command->argv, 0),
(char * const *) wrapped_command->argv->pdata,
wrapped_command->envp);
glnx_throw_errno_prefix (error, "execvpe %s",
(gchar *) g_ptr_array_index (wrapped_command->argv, 0));
goto out;
}
else
{
goto out;
}
}
if (!is_flatpak_env)
{
g_debug ("Checking bwrap features...");
bwrap_help_argv[0] = bwrap_executable;
bwrap_help = pv_capture_output (bwrap_help_argv, error);
if (bwrap_help == NULL)
goto out;
}
/* Start with an empty environment and populate it later */
bwrap = flatpak_bwrap_new (flatpak_bwrap_empty_env);
flatpak_bwrap_add_arg (bwrap, bwrap_executable);
exports = flatpak_exports_new ();
if (is_flatpak_env)
{
glnx_autofd int fd = TEMP_FAILURE_RETRY (open ("/run/host",
O_CLOEXEC | O_PATH));
if (fd < 0)
{
glnx_throw_errno_prefix (error, "Unable to open /run/host");
goto out;
}
flatpak_exports_take_host_fd (exports, glnx_steal_fd (&fd));
}
/* Protect the controlling terminal from the app/game, unless we are
* running an interactive shell in which case that would break its
* job control. */
if (opt_terminal != PV_TERMINAL_TTY)
flatpak_bwrap_add_arg (bwrap, "--new-session");
/* Start with just the root tmpfs (which appears automatically)
* and the standard API filesystems */
pv_bwrap_add_api_filesystems (bwrap);
/* The FlatpakExports will populate /run/host for us */
flatpak_exports_add_host_os_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_ONLY);
/* steam-runtime-system-info uses this to detect pressure-vessel, so we
* need to create it even if it will be empty */
flatpak_bwrap_add_args (bwrap,
"--dir",
"/run/pressure-vessel",
NULL);
if (opt_runtime != NULL && opt_runtime[0] != '\0')
{
PvRuntimeFlags flags = PV_RUNTIME_FLAGS_NONE;
if (opt_gc_runtimes)
flags |= PV_RUNTIME_FLAGS_GC_RUNTIMES;
if (opt_generate_locales)
flags |= PV_RUNTIME_FLAGS_GENERATE_LOCALES;
if (opt_graphics_provider != NULL && opt_graphics_provider[0] != '\0')
flags |= PV_RUNTIME_FLAGS_PROVIDER_GRAPHICS_STACK;
if (opt_verbose)
flags |= PV_RUNTIME_FLAGS_VERBOSE;
g_debug ("Configuring runtime %s...", opt_runtime);
runtime = pv_runtime_new (opt_runtime,
opt_copy_runtime_into,
bwrap_executable,
tools_dir,
opt_graphics_provider,
graphics_provider_mount_point,
original_environ,
flags,
error);
if (runtime == NULL)
goto out;
if (!pv_runtime_bind (runtime, bwrap, extra_locked_vars_to_unset,
extra_locked_vars_to_inherit, error))
goto out;
}
else if (is_flatpak_env)
{
glnx_throw (error,
"Cannot operate without a runtime from inside a "
"Flatpak app");
goto out;
}
else
{
static const char * const export_os_mutable[] = { "/etc", "/tmp", "/var" };
g_assert (!is_flatpak_env);
if (!pv_bwrap_bind_usr (bwrap, "/", "/", "/", error))
goto out;
for (i = 0; i < G_N_ELEMENTS (export_os_mutable); i++)
{
const char *dir = export_os_mutable[i];
if (g_file_test (dir, G_FILE_TEST_EXISTS))
flatpak_bwrap_add_args (bwrap, "--bind", dir, dir, NULL);
}
/* We do each subdirectory of /run separately, so that we can
* always create /run/host and /run/pressure-vessel. */
if (!export_contents_of_run (bwrap, error))
goto out;
/* This handles everything except:
*
* /app (should be unnecessary)
* /boot (should be unnecessary)
* /dev (handled by pv_bwrap_add_api_filesystems() above)
* /etc (handled by export_os_mutable)
* /proc (handled by pv_bwrap_add_api_filesystems() above)
* /root (should be unnecessary)
* /run (handled by export_contents_of_run())
* /sys (handled by pv_bwrap_add_api_filesystems() above)
* /tmp (handled by export_os_mutable)
* /usr, /lib, /lib32, /lib64, /bin, /sbin
* (all handled by pv_bwrap_bind_usr() above)
* /var (handled by export_os_mutable)
*/
if (!export_root_dirs_like_filesystem_host (exports,
FLATPAK_FILESYSTEM_MODE_READ_WRITE,
error))
goto out;
}
/* Protect other users' homes (but guard against the unlikely
* situation that they don't exist) */
if (g_file_test ("/home", G_FILE_TEST_EXISTS))
flatpak_bwrap_add_args (bwrap,
"--tmpfs", "/home",
NULL);
g_debug ("Making home directory available...");
if (opt_fake_home == NULL)
{
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_WRITE,
home);
}
else
{
if (!use_fake_home (exports, bwrap, opt_fake_home, error))
goto out;
}
if (!opt_share_pid)
{
g_warning ("Unsharing process ID namespace. This is not expected "
"to work...");
flatpak_bwrap_add_arg (bwrap, "--unshare-pid");
}
/* Always export /tmp for now. SteamVR uses this as a rendezvous
* directory for IPC. */
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_WRITE,
"/tmp");
g_debug ("Adjusting LD_PRELOAD...");
/* We need the LD_PRELOADs from Steam visible at the paths that were
* used for them, which might be their physical rather than logical
* locations. */
if (opt_ld_preload != NULL)
{
for (i = 0; i < opt_ld_preload->len; i++)
{
const char *preload = g_ptr_array_index (opt_ld_preload, i);
g_assert (preload != NULL);
if (*preload == '\0')
continue;
/* We have the beginnings of infrastructure to set a LD_PRELOAD
* from inside the container, but currently the only thing we
* support is it coming from the host. */
g_assert (g_str_has_prefix (preload, "host:"));
preload = preload + 5;
if (g_file_test (preload, G_FILE_TEST_EXISTS))
{
if (opt_remove_game_overlay
&& g_str_has_suffix (preload, "/gameoverlayrenderer.so"))
{
g_debug ("Disabling Steam Overlay: %s", preload);
continue;
}
if (runtime != NULL
&& (g_str_has_prefix (preload, "/usr/")
|| g_str_has_prefix (preload, "/lib")))
{
g_autofree gchar *in_run_host = g_build_filename ("/run/host",
preload,
NULL);
/* When using a runtime we can't write to /usr/ or /libQUAL/,
* so redirect this preloaded module to the corresponding
* location in /run/host. */
pv_search_path_append (adjusted_ld_preload, in_run_host);
}
else
{
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_ONLY,
preload);
pv_search_path_append (adjusted_ld_preload, preload);
}
}
else
{
g_debug ("LD_PRELOAD module '%s' does not exist", preload);
}
}
}
if (adjusted_ld_preload->len != 0)
flatpak_bwrap_set_env (bwrap, "LD_PRELOAD", adjusted_ld_preload->str, TRUE);
g_debug ("Making Steam environment variables available if required...");
for (i = 0; i < G_N_ELEMENTS (known_required_env); i++)
bind_and_propagate_from_environ (exports, bwrap,
known_required_env[i].name,
known_required_env[i].flags);
/* Make arbitrary filesystems available. This is not as complete as
* Flatpak yet. */
if (opt_filesystems != NULL)
{
g_debug ("Processing --filesystem arguments...");
for (i = 0; opt_filesystems[i] != NULL; i++)
{
/* We already checked this */
g_assert (g_path_is_absolute (opt_filesystems[i]));
g_debug ("Bind-mounting \"%s\"", opt_filesystems[i]);
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_WRITE,
opt_filesystems[i]);
}
}
/* Make sure the current working directory (the game we are going to
* run) is available. Some games write here. */
g_debug ("Making current working directory available...");
cwd_p_host = pv_current_namespace_path_to_host_path (cwd_p);
if (pv_is_same_file (home, cwd_p))
{
g_debug ("Not making physical working directory \"%s\" available to "
"container because it is the home directory",
cwd_p);
}
else
{
/* If in Flatpak, we assume that cwd_p_host is visible in the
* current namespace as well as in the host, because it's
* either in our ~/.var/app/$FLATPAK_ID, or a --filesystem that
* was exposed from the host. */
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_WRITE,
cwd_p_host);
}
flatpak_bwrap_add_args (bwrap,
"--chdir", cwd_p_host,
NULL);
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("PWD"));
/* Put Steam Runtime environment variables back, if /usr is mounted
* from the host. */
if (runtime == NULL)
{
g_debug ("Making Steam Runtime available...");
/* We need libraries from the Steam Runtime, so make sure that's
* visible (it should never need to be read/write though) */
if (opt_env_if_host != NULL)
{
for (i = 0; opt_env_if_host[i] != NULL; i++)
{
char *equals = strchr (opt_env_if_host[i], '=');
g_assert (equals != NULL);
if (g_str_has_prefix (opt_env_if_host[i], "STEAM_RUNTIME=/"))
flatpak_exports_add_path_expose (exports,
FLATPAK_FILESYSTEM_MODE_READ_ONLY,
equals + 1);
*equals = '\0';
flatpak_bwrap_set_env (bwrap, opt_env_if_host[i], equals + 1, TRUE);
*equals = '=';
}
}
}
/* Convert the exported directories into extra bubblewrap arguments */
exports_bwrap = flatpak_bwrap_new (flatpak_bwrap_empty_env);
flatpak_exports_append_bwrap_args (exports, exports_bwrap);
adjust_exports (exports_bwrap, home);
flatpak_bwrap_append_bwrap (bwrap, exports_bwrap);
/* We need to set up IPC rendezvous points relatively late, so that
* even if we are sharing /tmp via --filesystem=/tmp, we'll still
* mount our own /tmp/.X11-unix over the top of the OS's. */
if (runtime != NULL)
{
flatpak_run_add_wayland_args (bwrap);
/* When in a Flatpak container the "DISPLAY" env is equal to ":99.0",
* but it might be different on the host system. As a workaround we simply
* bind the whole "/tmp/.X11-unix" directory and later unset the container
* "DISPLAY" env.
*/
if (is_flatpak_env)
{
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/tmp/.X11-unix", "/tmp/.X11-unix",
NULL);
}
else
{
flatpak_run_add_x11_args (bwrap, extra_locked_vars_to_unset, TRUE);
}
flatpak_run_add_pulseaudio_args (bwrap, extra_locked_vars_to_unset);
flatpak_run_add_session_dbus_args (bwrap);
flatpak_run_add_system_dbus_args (bwrap);
}
if (is_flatpak_env)
{
/* These are the environment variables that will be wrong, or useless,
* in the new container that will be created. */
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("FLATPAK_ID"));
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("FLATPAK_SANDBOX_DIR"));
g_hash_table_add (extra_locked_vars_to_unset, g_strdup ("LD_AUDIT"));
/* These are the environment variables that might differ in the host
* system. However from inside a container we are not able to know the
* host's value. So we allow them to inherit the value from the host. */
g_hash_table_add (extra_locked_vars_to_inherit, g_strdup ("DBUS_SESSION_BUS_ADDRESS"));
g_hash_table_add (extra_locked_vars_to_inherit, g_strdup ("DBUS_SYSTEM_BUS_ADDRESS"));
g_hash_table_add (extra_locked_vars_to_inherit, g_strdup ("DISPLAY"));
g_hash_table_add (extra_locked_vars_to_inherit, g_strdup ("XDG_RUNTIME_DIR"));
/* The bwrap envp will be completely ignored when calling
* `flatpak-spawn --host`. For this reason we convert them to
* `--setenv`. */
for (i = 0; bwrap->envp != NULL && bwrap->envp[i] != NULL; i++)
{
g_auto(GStrv) split = g_strsplit (bwrap->envp[i], "=", 2);
g_assert (split != NULL);
g_assert (split[0] != NULL);
g_assert (split[1] != NULL);
flatpak_bwrap_add_args (bwrap,
"--setenv", split[0], split[1],
NULL);
}
}
for (i = 0; bwrap->envp != NULL && bwrap->envp[i] != NULL; i++)
{
/* List only the variables names and not their values */
char *equals = strchr (bwrap->envp[i], '=');
g_assert (equals != NULL);
/* Never lock LD_PRELOAD, otherwise, for example, we might miss the
* overlay renderer library that the Steam client adds to LD_PRELOAD */
if (g_str_has_prefix (bwrap->envp[i], "LD_PRELOAD="))
continue;
*equals = '\0';
g_string_append (lock_env, bwrap->envp[i]);
*equals = '=';
g_string_append_c (lock_env, '\0');
}
g_hash_table_iter_init (&iter, extra_locked_vars_to_unset);
while (g_hash_table_iter_next (&iter, &k, NULL))
{
env_var = k;
g_string_append (lock_env, env_var);
g_string_append_c (lock_env, '\0');
flatpak_bwrap_add_args (bwrap,
"--unsetenv", env_var,
NULL);
}
g_hash_table_iter_init (&iter, extra_locked_vars_to_inherit);
while (g_hash_table_iter_next (&iter, &k, NULL))
{
/* To inherit the variable value, we just use the lock
* mechanism without `--setenv` or '--unsetenv'. In this way, when we
* execute `launcher` with `--host`, it will inherit the value from the
* host system. */
env_var = k;
g_string_append (lock_env, env_var);
g_string_append_c (lock_env, '\0');
}
/* Populate the bwrap environ with the variables that are not in the
* `extra_locked_vars_to_unset` list or `extra_locked_vars_to_inherit` list,
* and without overriding the values that are already present in
* bwrap->envp.
* We skip this if we are in a Flatpak environment, because in that case
* we already used `--setenv` for all the variables that we care about and
* the bwrap envp will be ignored anyway. */
if (!is_flatpak_env)
{
for (i = 0; original_environ[i] != NULL; i++)
{
char *eq = strchr (original_environ[i], '=');
if (eq)
{
g_autofree gchar *key = g_strndup (original_environ[i],
eq - original_environ[i]);
if (!g_hash_table_contains (extra_locked_vars_to_unset, key)
&& !g_hash_table_contains (extra_locked_vars_to_inherit, key))
flatpak_bwrap_set_env (bwrap, key, eq + 1, FALSE);
}
}
/* The setuid bwrap will filter out some of the environment variables,
* so we have to go via --setenv */
for (i = 0; unsecure_environment_variables[i] != NULL; i++)
{
const gchar *val = g_environ_getenv (bwrap->envp, unsecure_environment_variables[i]);
if (val != NULL)
{
flatpak_bwrap_add_args (bwrap, "--setenv",
unsecure_environment_variables[i], val, NULL);
}
}
}
if (!flatpak_buffer_to_sealed_memfd_or_tmpfile (&lock_env_tmpf, "lock-env",
lock_env->str, lock_env->len,
error))
goto out;
lock_env_fd = g_strdup_printf ("%d", lock_env_tmpf.fd);
flatpak_bwrap_add_fd (bwrap, glnx_steal_fd (&lock_env_tmpf.fd));
if (opt_verbose)
{
g_message ("%s options before bundling:", bwrap_executable);
for (i = 0; i < bwrap->argv->len; i++)
{
g_autofree gchar *quoted = NULL;
quoted = g_shell_quote (g_ptr_array_index (bwrap->argv, i));
g_message ("\t%s", quoted);
}
}
if (!opt_only_prepare)
{
if (!flatpak_bwrap_bundle_args (bwrap, 1, -1, FALSE, error))
goto out;
}
adverb_args = flatpak_bwrap_new (flatpak_bwrap_empty_env);
if (runtime != NULL)
adverb_in_container = pv_runtime_get_adverb (runtime, adverb_args);
if (opt_terminate_timeout >= 0.0)
{
if (opt_terminate_idle_timeout > 0.0)
flatpak_bwrap_add_arg_printf (adverb_args,
"--terminate-idle-timeout=%f",
opt_terminate_idle_timeout);
flatpak_bwrap_add_arg_printf (adverb_args,
"--terminate-timeout=%f",
opt_terminate_timeout);
}
/* If not using a runtime, the adverb in the container has the
* same path as outside */
if (adverb_in_container == NULL)
adverb_in_container = g_build_filename (tools_dir,
"pressure-vessel-adverb",
NULL);
flatpak_bwrap_add_args (bwrap,
adverb_in_container,
"--exit-with-parent",
"--subreaper",
NULL);
if (opt_pass_fds != NULL)
{
for (i = 0; i < opt_pass_fds->len; i++)
{
int fd = g_array_index (opt_pass_fds, int, i);
flatpak_bwrap_add_fd (bwrap, fd);
flatpak_bwrap_add_arg_printf (bwrap, "--pass-fd=%d", fd);
}
}
flatpak_bwrap_add_arg_printf (bwrap, "--pass-fd=%s", lock_env_fd);
switch (opt_shell)
{
case PV_SHELL_AFTER:
flatpak_bwrap_add_arg (bwrap, "--shell=after");
break;
case PV_SHELL_FAIL:
flatpak_bwrap_add_arg (bwrap, "--shell=fail");
break;
case PV_SHELL_INSTEAD:
flatpak_bwrap_add_arg (bwrap, "--shell=instead");
break;
case PV_SHELL_NONE:
flatpak_bwrap_add_arg (bwrap, "--shell=none");
break;
default:
g_warn_if_reached ();
}
switch (opt_terminal)
{
case PV_TERMINAL_AUTO:
flatpak_bwrap_add_arg (bwrap, "--terminal=auto");
break;
case PV_TERMINAL_NONE:
flatpak_bwrap_add_arg (bwrap, "--terminal=none");
break;
case PV_TERMINAL_TTY:
flatpak_bwrap_add_arg (bwrap, "--terminal=tty");
break;
case PV_TERMINAL_XTERM:
flatpak_bwrap_add_arg (bwrap, "--terminal=xterm");
break;
default:
g_warn_if_reached ();
break;
}
if (opt_verbose)
flatpak_bwrap_add_arg (bwrap, "--verbose");
flatpak_bwrap_append_bwrap (bwrap, adverb_args);
flatpak_bwrap_add_arg (bwrap, "--");
if (opt_launcher)
{
g_autofree gchar *pressure_vessel_launcher = g_build_filename (tools_dir,
"pressure-vessel-launcher",
NULL);
g_debug ("Adding pressure-vessel-launcher '%s'...", pressure_vessel_launcher);
flatpak_bwrap_add_arg (bwrap, pressure_vessel_launcher);
g_debug ("Adding locked environment variables...");
flatpak_bwrap_add_args (bwrap, "--lock-env-from-fd", lock_env_fd, NULL);
}
g_debug ("Adding wrapped command...");
flatpak_bwrap_append_args (bwrap, wrapped_command->argv);
if (is_flatpak_env)
{
/* Just use the envp from @bwrap */
g_autoptr(FlatpakBwrap) flatpak_spawn = flatpak_bwrap_new (flatpak_bwrap_empty_env);
flatpak_bwrap_add_arg (flatpak_spawn, spawn_executable);
flatpak_bwrap_add_arg (flatpak_spawn, "--host");
for (i = 0; i < bwrap->fds->len; i++)
{
g_autofree char *fd_str = g_strdup_printf ("--forward-fd=%d",
g_array_index (bwrap->fds, int, i));
flatpak_bwrap_add_arg (flatpak_spawn, fd_str);
}
/* Change the current working directory where flatpak-spawn will run.
* Bwrap will then set its directory by itself. For this reason here
* we just need a directory that it's known to exist. */
flatpak_bwrap_add_arg (flatpak_spawn, "--directory=/");
flatpak_bwrap_append_bwrap (flatpak_spawn, bwrap);
g_clear_pointer (&bwrap, flatpak_bwrap_free);
bwrap = g_steal_pointer (&flatpak_spawn);
}
if (opt_verbose)
{
g_message ("Final %s options:", bwrap_executable);
for (i = 0; i < bwrap->argv->len; i++)
{
g_autofree gchar *quoted = NULL;
quoted = g_shell_quote (g_ptr_array_index (bwrap->argv, i));
g_message ("\t%s", quoted);
}
g_message ("%s environment:", bwrap_executable);
for (i = 0; bwrap->envp != NULL && bwrap->envp[i] != NULL; i++)
{
g_autofree gchar *quoted = NULL;
quoted = g_shell_quote (bwrap->envp[i]);
g_message ("\t%s", quoted);
}
}
/* Clean up temporary directory before running our long-running process */
if (runtime != NULL)
pv_runtime_cleanup (runtime);
flatpak_bwrap_finish (bwrap);
if (opt_write_bwrap != NULL)
{
FILE *file = fopen (opt_write_bwrap, "w");
if (file == NULL)
{
g_warning ("An error occurred trying to write the bwrap arguments: %s",
g_strerror (errno));
/* This is not a fatal error, try to continue */
}
else
{
for (i = 0; i < bwrap->argv->len; i++)
fprintf (file, "%s%c", (gchar *)g_ptr_array_index (bwrap->argv, i), '\0');
fclose (file);
}
}
if (opt_only_prepare)
ret = 0;
else
pv_bwrap_execve (bwrap, fileno (original_stdout), error);
out:
if (local_error != NULL)
g_warning ("%s", local_error->message);
g_clear_pointer (&opt_ld_preload, g_ptr_array_unref);
g_clear_pointer (&opt_env_if_host, g_strfreev);
g_clear_pointer (&opt_freedesktop_app_id, g_free);
g_clear_pointer (&opt_steam_app_id, g_free);
g_clear_pointer (&opt_home, g_free);
g_clear_pointer (&opt_fake_home, g_free);
g_clear_pointer (&opt_runtime_base, g_free);
g_clear_pointer (&opt_runtime, g_free);
g_clear_pointer (&opt_pass_fds, g_array_unref);
g_debug ("Exiting with status %d", ret);
return ret;
}