udev_device_get_syspath (3)
NAME
udev_device_get_syspath, udev_device_get_sysname, udev_device_get_sysnum, udev_device_get_devpath, udev_device_get_devnode, udev_device_get_devnum, udev_device_get_devtype, udev_device_get_subsystem, udev_device_get_driver, udev_device_get_udev, udev_device_get_parent, udev_device_get_parent_with_subsystem_devtype, udev_device_get_is_initialized, udev_device_get_action - Query device propertiesSYNOPSIS
#include <libudev.h>
-
const char *udev_device_get_syspath(struct udev_device *udev_device);
- const char *udev_device_get_sysname(struct udev_device *udev_device);
- const char *udev_device_get_sysnum(struct udev_device *udev_device);
- const char *udev_device_get_devpath(struct udev_device *udev_device);
- const char *udev_device_get_devnode(struct udev_device *udev_device);
- dev_t udev_device_get_devnum(struct udev_device *udev_device);
- const char *udev_device_get_devtype(struct udev_device *udev_device);
- const char *udev_device_get_subsystem(struct udev_device *udev_device);
- const char *udev_device_get_driver(struct udev_device *udev_device);
- struct udev *udev_device_get_udev(struct udev_device *udev_device);
- struct udev_device *udev_device_get_parent(struct udev_device *udev_device);
- struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, const char *subsystem, const char *devtype);
- int udev_device_get_is_initialized(struct udev_device *udev_device);
- const char *udev_device_get_action(struct udev_device *udev_device);
- const char *udev_device_get_sysname(struct udev_device *udev_device);
RETURN VALUE
On success, udev_device_get_devnum() returns the device type of the passed device. On failure, a device type with minor and major number set to 0 is returned.
udev_device_get_udev() always returns a valid pointer to the udev context that this device belongs to.
On success, udev_device_get_parent() and udev_device_get_parent_with_subsystem_devtype() return a pointer to the parent device. No additional reference to this device is acquired, but the child device owns a reference to such a parent device. On failure, NULL is returned.
On success, udev_device_get_is_initialized() returns either 1 or 0, depending on whether the passed device has already been initialized by udev or not. On failure, a negative error code is returned. Note that devices for which no udev rules are defined are never reported initialized.
SEE ALSO
udev_new(3), udev_device_new_from_syspath(3), udev_device_has_tag(3), udev_enumerate_new(3), udev_monitor_new_from_netlink(3), udev_list_entry(3), systemd(1),