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.
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),
Referenced By
systemd.directives(7), systemd.index(7), udev_device_new_from_syspath(3), udev_monitor_filter_update(3), udev_monitor_new_from_netlink(3).
The man pages udev_monitor_enable_receiving(3), udev_monitor_get_fd(3), udev_monitor_get_udev(3) and udev_monitor_set_receive_buffer_size(3) are aliases of udev_monitor_receive_device(3).