For security reasons, .k5login files must be owned by
the local user or by root.
+**kcm_mach_service**
+ On OS X only, determines the name of the bootstrap service used to
+ contact the KCM daemon for the KCM credential cache type. If the
+ value is ``-``, Mach RPC will not be used to contact the KCM
+ daemon. The default value is ``org.h5l.kcm``.
+
+**kcm_socket**
+ Determines the path to the Unix domain socket used to access the
+ KCM daemon for the KCM credential cache type. If the value is
+ ``-``, Unix domain sockets will not be used to contact the KCM
+ daemon. The default value is
+ ``/var/run/.heim_org.h5l.kcm-socket``.
+
**kdc_default_options**
Default KDC options (Xored for multiple values) when requesting
initial tickets. By default it is set to 0x00000010
#. **FILE** caches are the simplest and most portable. A simple flat
file format is used to store one credential after another. This is
- the default ccache type.
+ the default ccache type if no type is specified in a ccache name.
+
+#. **KCM** caches work by contacting a daemon process called ``kcm``
+ to perform cache operations. If the cache name is just ``KCM:``,
+ the default cache as determined by the KCM daemon will be used.
+ Newly created caches must generally be named ``KCM:uid:name``,
+ where *uid* is the effective user ID of the running process.
+
+ KCM client support is new in release 1.13. A KCM daemon has not
+ yet been implemented in MIT krb5, but the client will interoperate
+ with the KCM daemon implemented by Heimdal. OS X 10.7 and higher
+ provides a KCM daemon as part of the operating system, and the
+ **KCM** cache type is used as the default cache on that platform in
+ a default build.
#. **KEYRING** is Linux-specific, and uses the kernel keyring support
to store credential data in unswappable kernel memory where only
the target service realm.
Credential cache collections are new in release 1.10, with support
-from the **DIR** and **API** ccache types. In release 1.12, the
-**KEYRING** ccache type also supports collections.
+from the **DIR** and **API** ccache types. Starting in release 1.12,
+collections are also supported by the **KEYRING** ccache type.
+Collections are supported by the **KCM** ccache type in release 1.13.
+
Tool alterations to use cache collection
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~