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gdesktopappinfo: add g_desktop_app_info_launch_uris_as_manager_with_fds variant
Add an app-launching function which allows standard file descriptors to be passed to the child process. This will be used by gnome-shell to pass systemd journal descriptors as stdout/stderr. gnome-shell's child_setup function can then be eliminated, which will enable use of the posix_spawn optimized gspawn codepath for desktop app launching.
This commit is contained in:
Daniel Drake
@@ -2641,6 +2641,9 @@ g_desktop_app_info_launch_uris_with_spawn (GDesktopAppInfo *info,
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gpointer user_setup_data,
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GDesktopAppLaunchCallback pid_callback,
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gpointer pid_callback_data,
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gint stdin_fd,
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gint stdout_fd,
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gint stderr_fd,
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GError **error)
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{
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gboolean completed = FALSE;
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@@ -2736,14 +2739,17 @@ g_desktop_app_info_launch_uris_with_spawn (GDesktopAppInfo *info,
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g_free (argv);
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argv = NULL;
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if (!g_spawn_async (info->path,
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wrapped_argv,
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envp,
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spawn_flags,
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user_setup,
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user_setup_data,
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&pid,
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error))
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if (!g_spawn_async_with_fds (info->path,
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wrapped_argv,
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envp,
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spawn_flags,
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user_setup,
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user_setup_data,
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&pid,
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stdin_fd,
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stdout_fd,
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stderr_fd,
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error))
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{
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if (sn_id)
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g_app_launch_context_launch_failed (launch_context, sn_id);
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@@ -2916,6 +2922,9 @@ g_desktop_app_info_launch_uris_internal (GAppInfo *appinfo,
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gpointer user_setup_data,
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GDesktopAppLaunchCallback pid_callback,
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gpointer pid_callback_data,
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gint stdin_fd,
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gint stdout_fd,
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gint stderr_fd,
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GError **error)
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{
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GDesktopAppInfo *info = G_DESKTOP_APP_INFO (appinfo);
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@@ -2929,7 +2938,8 @@ g_desktop_app_info_launch_uris_internal (GAppInfo *appinfo,
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else
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success = g_desktop_app_info_launch_uris_with_spawn (info, session_bus, info->exec, uris, launch_context,
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spawn_flags, user_setup, user_setup_data,
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pid_callback, pid_callback_data, error);
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pid_callback, pid_callback_data,
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stdin_fd, stdout_fd, stderr_fd, error);
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if (session_bus != NULL)
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{
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@@ -2954,6 +2964,7 @@ g_desktop_app_info_launch_uris (GAppInfo *appinfo,
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launch_context,
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_SPAWN_FLAGS_DEFAULT,
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NULL, NULL, NULL, NULL,
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-1, -1, -1,
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error);
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}
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@@ -3004,6 +3015,61 @@ g_desktop_app_info_launch (GAppInfo *appinfo,
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return res;
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}
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/**
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* g_desktop_app_info_launch_uris_as_manager_with_fds:
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* @appinfo: a #GDesktopAppInfo
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* @uris: (element-type utf8): List of URIs
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* @launch_context: (nullable): a #GAppLaunchContext
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* @spawn_flags: #GSpawnFlags, used for each process
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* @user_setup: (scope async) (nullable): a #GSpawnChildSetupFunc, used once
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* for each process.
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* @user_setup_data: (closure user_setup) (nullable): User data for @user_setup
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* @pid_callback: (scope call) (nullable): Callback for child processes
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* @pid_callback_data: (closure pid_callback) (nullable): User data for @callback
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* @stdin_fd: file descriptor to use for child's stdin, or -1
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* @stdout_fd: file descriptor to use for child's stdout, or -1
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* @stderr_fd: file descriptor to use for child's stderr, or -1
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* @error: return location for a #GError, or %NULL
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*
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* Equivalent to g_desktop_app_info_launch_uris_as_manager() but allows
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* you to pass in file descriptors for the stdin, stdout and stderr streams
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* of the launched process.
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*
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* If application launching occurs via some non-spawn mechanism (e.g. D-Bus
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* activation) then @stdin_fd, @stdout_fd and @stderr_fd are ignored.
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*
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* Returns: %TRUE on successful launch, %FALSE otherwise.
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*
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* Since: 2.58
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*/
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gboolean
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g_desktop_app_info_launch_uris_as_manager_with_fds (GDesktopAppInfo *appinfo,
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GList *uris,
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GAppLaunchContext *launch_context,
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GSpawnFlags spawn_flags,
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GSpawnChildSetupFunc user_setup,
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gpointer user_setup_data,
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GDesktopAppLaunchCallback pid_callback,
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gpointer pid_callback_data,
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gint stdin_fd,
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gint stdout_fd,
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gint stderr_fd,
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GError **error)
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{
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return g_desktop_app_info_launch_uris_internal ((GAppInfo*)appinfo,
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uris,
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launch_context,
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spawn_flags,
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user_setup,
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user_setup_data,
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pid_callback,
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pid_callback_data,
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stdin_fd,
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stdout_fd,
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stderr_fd,
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error);
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}
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/**
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* g_desktop_app_info_launch_uris_as_manager:
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* @appinfo: a #GDesktopAppInfo
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@@ -3046,15 +3112,16 @@ g_desktop_app_info_launch_uris_as_manager (GDesktopAppInfo *appinfo,
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gpointer pid_callback_data,
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GError **error)
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{
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return g_desktop_app_info_launch_uris_internal ((GAppInfo*)appinfo,
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uris,
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launch_context,
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spawn_flags,
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user_setup,
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user_setup_data,
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pid_callback,
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pid_callback_data,
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error);
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return g_desktop_app_info_launch_uris_as_manager_with_fds (appinfo,
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uris,
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launch_context,
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spawn_flags,
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user_setup,
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user_setup_data,
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pid_callback,
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pid_callback_data,
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-1, -1, -1,
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error);
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}
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/* OnlyShowIn API support {{{2 */
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@@ -4629,7 +4696,8 @@ g_desktop_app_info_launch_action (GDesktopAppInfo *info,
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if (exec_line)
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g_desktop_app_info_launch_uris_with_spawn (info, session_bus, exec_line, NULL, launch_context,
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_SPAWN_FLAGS_DEFAULT, NULL, NULL, NULL, NULL, NULL);
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_SPAWN_FLAGS_DEFAULT, NULL, NULL, NULL, NULL,
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-1, -1, -1, NULL);
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}
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if (session_bus != NULL)
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