diff options
Diffstat (limited to 'man/udev_device_has_tag.xml')
| -rw-r--r-- | man/udev_device_has_tag.xml | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/man/udev_device_has_tag.xml b/man/udev_device_has_tag.xml index f34ae9ed37..e27b770215 100644 --- a/man/udev_device_has_tag.xml +++ b/man/udev_device_has_tag.xml @@ -109,12 +109,19 @@ <function>udev_device_get_property_value()</function> and <function>udev_device_get_sysattr_value()</function> return a pointer to a constant string of the requested value. On error, - <constant>NULL</constant> is returned.</para> + <constant>NULL</constant> is returned. Attributes that may + contain <constant>NUL</constant> bytes should not be retrieved + with <function>udev_device_get_sysattr_value()</function>; + instead, read them directly from the files within the device's + <property>syspath</property>.</para> <para>On success, <function>udev_device_set_sysattr_value()</function> returns an integer greater than, or equal to, <constant>0</constant>. - On failure, a negative error code is returned.</para> + On failure, a negative error code is returned. Values that + contain <constant>NUL</constant> bytes should not be set with + this function; instead, write them directly to the files within + the device's <property>syspath</property>.</para> <para>On success, <function>udev_device_has_tag()</function> returns <constant>1</constant> or <constant>0</constant>, |