wlroots-hyprland/include/wlr/backend/session.h

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#ifndef WLR_BACKEND_SESSION_H
#define WLR_BACKEND_SESSION_H
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#include <stdbool.h>
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#include <wayland-server.h>
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#include <libudev.h>
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#include <sys/types.h>
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struct session_impl;
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struct wlr_device {
int fd;
dev_t dev;
struct wl_signal signal;
struct wl_list link;
};
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struct wlr_session {
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const struct session_impl *impl;
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/*
* Signal for when the session becomes active/inactive.
* It's called when we swap virtual terminal.
*/
struct wl_signal session_signal;
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bool active;
unsigned vtnr;
char seat[8];
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struct udev *udev;
struct udev_monitor *mon;
struct wl_event_source *udev_event;
struct wl_list devices;
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};
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/*
* Opens a session, taking control of the current virtual terminal.
* This should not be called if another program is already in control
* of the terminal (Xorg, another Wayland compositor, etc.).
*
* If logind support is not enabled, you must have CAP_SYS_ADMIN or be root.
* It is safe to drop priviledges after this is called.
*
* Returns NULL on error.
*/
struct wlr_session *wlr_session_create(struct wl_display *disp);
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/*
* Closes a previously opened session and restores the virtual terminal.
* You should call wlr_session_close_file on each files you opened
* with wlr_session_open_file before you call this.
*/
void wlr_session_destroy(struct wlr_session *session);
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/*
* Opens the file at path.
* This can only be used to open DRM or evdev (input) devices.
*
* When the session becomes inactive:
* - DRM files lose their DRM master status
* - evdev files become invalid and should be closed
*
* Returns -errno on error.
*/
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int wlr_session_open_file(struct wlr_session *session, const char *path);
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/*
* Closes a file previously opened with wlr_session_open_file.
*/
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void wlr_session_close_file(struct wlr_session *session, int fd);
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void wlr_session_signal_add(struct wlr_session *session, int fd,
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struct wl_listener *listener);
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/*
* Changes the virtual terminal.
*/
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bool wlr_session_change_vt(struct wlr_session *session, unsigned vt);
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size_t wlr_session_find_gpus(struct wlr_session *session,
size_t ret_len, int *ret);
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#endif