udev_enumerate_scan_devices

Index · Directives systemd 234

## Name

udev_enumerate_scan_devices, udev_enumerate_scan_subsystems, udev_enumerate_get_list_entry, udev_enumerate_add_syspath, udev_enumerate_get_udev — Query or modify a udev enumerate object

## Synopsis

    #include <libudev.h>

`int udev_enumerate_scan_devices(` | struct udev_enumerate *udev_enumerate`)`;

`int udev_enumerate_scan_subsystems(` | struct udev_enumerate *udev_enumerate`)`;

`struct udev_list_entry *udev_enumerate_get_list_entry(` | struct udev_enumerate *udev_enumerate`)`;

`int udev_enumerate_add_syspath(` | struct udev_enumerate *udev_enumerate,
| const char *syspath`)`;

`struct udev *udev_enumerate_get_udev(` | struct udev_enumerate *udev_enumerate`)`;

## Return Value

On success, `udev_enumerate_scan_devices()`, `udev_enumerate_scan_subsystems()` and `udev_enumerate_add_syspath()` return an integer greater than, or equal to, `0`.

On success, `udev_enumerate_get_list_entry()` returns a pointer to the first entry in the list of found devices. If the list is empty, or on failure, `NULL` is returned.

`udev_enumerate_get_udev()` always returns a pointer to the udev context that this enumerated object is associated with.

## See Also

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