udev_monitor_receive_device

systemd
udev_monitor_receive_device 3
udev_monitor_receive_device udev_monitor_enable_receiving udev_monitor_set_receive_buffer_size udev_monitor_get_fd udev_monitor_get_udev Query and modify device monitor

    #include <libudev.h>

struct udev_device *`udev_monitor_receive_device` struct udev_monitor *udev_monitor int `udev_monitor_enable_receiving` struct udev_monitor *udev_monitor int `udev_monitor_set_receive_buffer_size` struct udev_monitor *udev_monitor int size int `udev_monitor_get_fd` struct udev_monitor *udev_monitor struct udev *`udev_monitor_get_udev` struct udev_monitor *udev_monitor

## Return Value

On success, `udev_monitor_receive_device()` returns a pointer to a newly referenced device that was received via the monitor. The caller is responsible to drop this reference when done. On failure, `NULL` is returned.

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

On success, `udev_monitor_get_fd()` returns the file descriptor used by this monitor. On failure, a negative error code is returned.

`udev_monitor_get_udev()` always returns a pointer to the udev context that this monitor is associated with.

## See Also

udev_new 3, udev_device_new_from_syspath 3, udev_enumerate_new 3, udev_monitor_new_from_netlink 3, udev_monitor_filter_update 3, udev_list_entry 3, systemd 1,