Copyright (C) 2000-2012 |
GNU Info (am-utils.info)Map TypesMap Types ========= A mount-map provides the run-time configuration information to Amd. Maps can be implemented in many ways. Some of the forms supported by Amd are regular files, ndbm databases, NIS maps, the "Hesiod" name server, and even the password file. A mount-map "name" is a sequence of characters. When an automount point is created a handle on the mount-map is obtained. For each map type configured, Amd attempts to reference the map of the appropriate type. If a map is found, Amd notes the type for future use and deletes the reference, for example closing any open file descriptors. The available maps are configured when Amd is built and can be displayed by running the command `amd -v'. When using an Amd configuration file (Note: Amd Configuration File) and the keyword `map_type' (Note: map_type Parameter), you may force the map used to any type. By default, Amd caches data in a mode dependent on the type of map. This is the same as specifying `cache:=mapdefault' and selects a suitable default cache mode depending on the map type. The individual defaults are described below. The CACHE option can be specified on automount points to alter the caching behavior (Note: Automount Filesystem). The following map types have been implemented, though some are not available on all machines. Run the command `amd -v' to obtain a list of map types configured on your machine. automatically generated by info2www version 1.2.2.9 |