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NAME | SYNOPSIS | RETURN VALUE | SEE ALSO | COLOPHON |
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UDEV_DEVICE_HAS_TAG(3) udev_device_has_tag UDEV_DEVICE_HAS_TAG(3)
udev_device_has_tag, udev_device_get_devlinks_list_entry,
udev_device_get_properties_list_entry,
udev_device_get_tags_list_entry, udev_device_get_sysattr_list_entry,
udev_device_get_property_value, udev_device_get_sysattr_value,
udev_device_set_sysattr_value - Retrieve or set device attributes
#include <libudev.h>
struct udev_list_entry
*udev_device_get_devlinks_list_entry(struct udev_device *udev_device);
struct udev_list_entry
*udev_device_get_properties_list_entry(struct udev_device *udev_device);
struct udev_list_entry
*udev_device_get_tags_list_entry(struct udev_device *udev_device);
struct udev_list_entry
*udev_device_get_sysattr_list_entry(struct udev_device *udev_device);
const char
*udev_device_get_property_value(struct udev_device *udev_device,
const char *key);
int udev_device_has_tag(struct udev_device *udev_device,
const char *tag);
const char
*udev_device_get_sysattr_value(struct udev_device *udev_device,
const char *sysattr);
int udev_device_set_sysattr_value(struct udev_device *udev_device,
const char *sysattr,
const char *value);
On success, udev_device_get_devlinks_list_entry(),
udev_device_get_properties_list_entry(),
udev_device_get_tags_list_entry() and
udev_device_get_sysattr_list_entry() return a pointer to the first
entry of the retrieved list. If that list is empty, or if an error
occurred, NULL is returned.
On success, udev_device_get_property_value() and
udev_device_get_sysattr_value() return a pointer to a constant string
of the requested value. On error, NULL is returned.
On success, udev_device_set_sysattr_value() returns an integer
greater than, or equal to, 0. On failure, a negative error code is
returned.
On success, udev_device_has_tag() returns 1 or 0, depending on
whether the device has the given tag or not. On failure, a negative
error code is returned.
udev_new(3), udev_device_new_from_syspath(3),
udev_device_get_syspath(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 2018-02-02. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2018-02-02.) 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 is not part
of the original manual page), send a mail to man-pages@man7.org
systemd 234 UDEV_DEVICE_HAS_TAG(3)
Pages that refer to this page: udev_device_get_syspath(3), udev_device_new_from_syspath(3), systemd.directives(7), systemd.index(7)
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