udev_monitor_filter_update

Index · Directives systemd 234

## Name

udev_monitor_filter_update, udev_monitor_filter_remove, udev_monitor_filter_add_match_subsystem_devtype, udev_monitor_filter_add_match_tag — Modify filters

## Synopsis

    #include <libudev.h>

`int udev_monitor_filter_update(` | struct udev_monitor *udev_monitor`)`;

`int udev_monitor_filter_remove(` | struct udev_monitor *udev_monitor`)`;

`int udev_monitor_filter_add_match_subsystem_devtype(` | struct udev_monitor *udev_monitor,
| const char *subsystem,
| const char *devtype`)`;

`int udev_monitor_filter_add_match_tag(` | struct udev_monitor *udev_monitor,
| const char *tag`)`;

## Return Value

On success, `udev_monitor_filter_update()`, `udev_monitor_filter_remove()`, `udev_monitor_filter_add_match_subsystem_devtype()` and `udev_monitor_filter_add_match_tag()` return an integer greater than, or equal to, `0`. On failure, a negative error code is returned.

## See Also

udev_new(3), udev_device_new_from_syspath(3), udev_enumerate_new(3), udev_monitor_new_from_netlink(3), udev_monitor_receive_device(3), udev_list_entry(3), systemd(1),