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UDEV_DEV...T_SYSPATH(3) udev_device_get_syspathUDEV_DEV...T_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);intudev_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()andudev_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 returnNULL. 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 to0is 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()andudev_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,NULLis returned. On success,udev_device_get_is_initialized()returns either1or0, 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_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(), andudev_device_get_action() were added in version 221.
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 thesystemd (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 2025-08-11. (At that time, the date of the most recent commit that was found in the repository was 2025-08-11.) If you discover 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 isnot part of the original manual page), send a mail to man-pages@man7.orgsystemd 258~rc2UDEV_DEV...T_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)
HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH. | |