781010be66
In the shell code we often use GLib.spawn_async to launch processes with a GSpawnChildSetupFunc implementation in JavaScript to reset the mutter nofile rlimit in the new child process. However, this is highly unsafe to do because this implies that the child setup function code is executed in gjs where a lot of allocations are done and even more not-async-signal-safe code is executed, in fact leading to dead-locks as reported in the past. To prevent this, declare a new functions that do the same of the GLib counterpart but without providing a GSpawnChildSetupFunc that is instead implemented in the C-side doing the cleanup that mutter requires without allocations or async-signal-unsafe code. Helps: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6698 Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/3293>
125 lines
6.5 KiB
C
125 lines
6.5 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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#ifndef __SHELL_UTIL_H__
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#define __SHELL_UTIL_H__
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#include <gio/gio.h>
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#include <clutter/clutter.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <meta/meta-cursor-tracker.h>
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#include <meta/meta-window-actor.h>
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G_BEGIN_DECLS
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void shell_util_set_hidden_from_pick (ClutterActor *actor,
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gboolean hidden);
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int shell_util_get_week_start (void);
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const char *shell_util_translate_time_string (const char *str);
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char *shell_util_regex_escape (const char *str);
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gboolean shell_write_string_to_stream (GOutputStream *stream,
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const char *str,
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GError **error);
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char *shell_get_file_contents_utf8_sync (const char *path,
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GError **error);
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void shell_util_touch_file_async (GFile *file,
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GAsyncReadyCallback callback,
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gpointer user_data);
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gboolean shell_util_touch_file_finish (GFile *file,
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GAsyncResult *res,
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GError **error);
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gboolean shell_util_wifexited (int status,
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int *exit);
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GdkPixbuf *shell_util_create_pixbuf_from_data (const guchar *data,
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gsize len,
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GdkColorspace colorspace,
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gboolean has_alpha,
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int bits_per_sample,
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int width,
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int height,
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int rowstride);
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void shell_util_check_cloexec_fds (void);
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void shell_util_start_systemd_unit (const char *unit,
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const char *mode,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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gboolean shell_util_start_systemd_unit_finish (GAsyncResult *res,
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GError **error);
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void shell_util_stop_systemd_unit (const char *unit,
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const char *mode,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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gboolean shell_util_stop_systemd_unit_finish (GAsyncResult *res,
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GError **error);
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void shell_util_systemd_unit_exists (const gchar *unit,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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gboolean shell_util_systemd_unit_exists_finish (GAsyncResult *res,
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GError **error);
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void shell_util_sd_notify (void);
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gboolean shell_util_has_x11_display_extension (MetaDisplay *display,
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const char *extension);
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char *shell_util_get_translated_folder_name (const char *name);
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gint shell_util_get_uid (void);
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GPid shell_util_spawn_async_with_pipes_and_fds (const char *working_directory,
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const char * const *argv,
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const char * const *envp,
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GSpawnFlags flags,
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int stdin_fd,
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int stdout_fd,
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int stderr_fd,
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const int *source_fds,
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const int *target_fds,
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size_t n_fds,
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int *stdin_pipe_out,
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int *stdout_pipe_out,
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int *stderr_pipe_out,
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GError **error);
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GPid shell_util_spawn_async_with_pipes (const char *working_directory,
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const char * const *argv,
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const char * const *envp,
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GSpawnFlags flags,
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int *standard_input,
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int *standard_output,
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int *standard_error,
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GError **error);
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GPid shell_util_spawn_async_with_fds (const char *working_directory,
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const char * const *argv,
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const char * const *envp,
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GSpawnFlags flags,
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int stdin_fd,
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int stdout_fd,
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int stderr_fd,
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GError **error);
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GPid shell_util_spawn_async (const char *working_directory,
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const char * const *argv,
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const char * const *envp,
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GSpawnFlags flags,
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GError **error);
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G_END_DECLS
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#endif /* __SHELL_UTIL_H__ */
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