NAME

       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

SYNOPSIS

       #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.

HISTORY

       udev_monitor_receive_device(), udev_monitor_enable_receiving(),
       udev_monitor_set_receive_buffer_size(), udev_monitor_get_fd(), and udev_monitor_get_udev()
       were added in version 221.

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)