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NAME | SYNOPSIS | RETURN VALUE | SEE ALSO | COLOPHON |
UDEV_DEVICE_GET_SYSPATH(3) udev_device_get_syspathUDEV_DEVICE_GET_SYSPATH(3)
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
properties
#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);
On success, udev_device_get_syspath(), udev_device_get_sysname(),
udev_device_get_sysnum(), udev_device_get_devpath(),
udev_device_get_devnode(), udev_device_get_devtype(),
udev_device_get_subsystem(), udev_device_get_driver() and
udev_device_get_action() return a pointer to a constant string that
describes the requested property. The lifetime of this string is
bound to the device it was requested on. On failure, each function
may return NULL.
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.
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),
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2017-07-05. If you dis‐
cover any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
systemd 234 UDEV_DEVICE_GET_SYSPATH(3)
Pages that refer to this page: udev_device_has_tag(3), udev_device_new_from_syspath(3), systemd.directives(7), systemd.index(7)