Newer
Older
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)
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
{
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 ("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;
}
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
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);
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
if (opt_verbose)
{
g_auto(GStrv) env = g_get_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);
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
}
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 (NULL);
switch (opt_terminal)
g_debug ("Wrapping command to use tty");
if (!pv_bwrap_wrap_tty (wrapped_command, error))
g_debug ("Wrapping command with xterm");
pv_bwrap_wrap_in_xterm (wrapped_command);
case PV_TERMINAL_AUTO:
case PV_TERMINAL_NONE:
default:
/* do nothing */
break;
if (opt_shell != PV_SHELL_NONE || opt_terminal == PV_TERMINAL_XTERM)
/* In the (PV_SHELL_NONE, PV_TERMINAL_XTERM) case, just don't let the
* xterm close before the user has had a chance to see the output */
pv_bwrap_wrap_interactive (wrapped_command, opt_shell);
if (argc > 1 && argv[1][0] == '-')
{
/* 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);
g_debug ("Checking for bwrap...");
bwrap_executable = check_bwrap (tools_dir, opt_only_prepare);
if (opt_test)
{
if (bwrap_executable == NULL)
{
ret = 1;
goto out;
}
else
{
g_debug ("OK (%s)", bwrap_executable);
ret = 0;
goto out;
}
}
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
if (bwrap_executable == NULL)
{
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;
}
}
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;
bwrap = flatpak_bwrap_new (NULL);
flatpak_bwrap_add_arg (bwrap, bwrap_executable);
/* 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");
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,
goto out;
if (!pv_runtime_bind (runtime, bwrap, error))
goto out;
}
else
{
flatpak_bwrap_add_args (bwrap,
"--bind", "/", "/",
NULL);
/* /dev is already visible, because we mounted the entire root
* filesystem, but we need to remount parts of it without nodev */
pv_bwrap_add_api_filesystems (bwrap);
}
/* 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_bwrap_add_args (bwrap,
"--bind", home, home,
NULL);
}
else
{
if (!use_fake_home (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");
}
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
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;
}
&& (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_bwrap_add_args (bwrap,
"--ro-bind", preload, preload,
NULL);
pv_search_path_append (adjusted_ld_preload, preload);
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
}
}
else
{
g_debug ("LD_PRELOAD module '%s' does not exist", preload);
}
}
}
/* Put the caller's LD_PRELOAD back.
* This would be filtered out by a setuid bwrap, so we have to go
* via --setenv. */
if (adjusted_ld_preload->len != 0)
flatpak_bwrap_add_args (bwrap,
"--setenv", "LD_PRELOAD",
adjusted_ld_preload->str,
NULL);
else
flatpak_bwrap_add_args (bwrap,
"--unsetenv", "LD_PRELOAD",
NULL);

Ludovico de Nittis
committed
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 (known_required_env[i], bwrap);
/* 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_bwrap_add_args (bwrap,
"--bind", opt_filesystems[i],
opt_filesystems[i],
NULL);
}
}
/* 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
{
flatpak_bwrap_add_args (bwrap,
"--bind", cwd_p_host, cwd_p_host,
/* 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 unset the container
* "DISPLAY" env.
*/
if (g_file_test ("/.flatpak-info", G_FILE_TEST_IS_REGULAR))
{
flatpak_bwrap_add_args (bwrap,
"--ro-bind", "/tmp/.X11-unix", "/tmp/.X11-unix",
NULL);
flatpak_bwrap_unset_env (bwrap, "DISPLAY");
}
else
{
flatpak_run_add_x11_args (bwrap, TRUE);
}
flatpak_run_add_pulseaudio_args (bwrap);
flatpak_run_add_session_dbus_args (bwrap);
flatpak_run_add_system_dbus_args (bwrap);
}
flatpak_bwrap_add_args (bwrap,
"--chdir", cwd_p_host,
"--unsetenv", "PWD",
NULL);
/* Put Steam Runtime environment variables back, if /usr is mounted
* from the host. */
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
{
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_bwrap_add_args (bwrap,
"--ro-bind", equals + 1,
equals + 1,
NULL);
}
*equals = '\0';
/* We do this via --setenv instead of flatpak_bwrap_set_env()
* to make sure they aren't filtered out by a setuid bwrap. */
flatpak_bwrap_add_args (bwrap,
"--setenv", opt_env_if_host[i],
equals + 1,
NULL);
*equals = '=';
}
}
}
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 (!flatpak_bwrap_bundle_args (bwrap, 1, -1, FALSE, error))
goto out;
adverb_args = flatpak_bwrap_new (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_verbose)
flatpak_bwrap_add_arg (bwrap, "--verbose");
flatpak_bwrap_append_bwrap (bwrap, adverb_args);
flatpak_bwrap_add_arg (bwrap, "--");
g_debug ("Adding wrapped command...");
flatpak_bwrap_append_args (bwrap, wrapped_command->argv);
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);
return ret;
}