Looks up information in local Network Information Services (NIS) maps.
/usr/lib/netsvc/yp/ypserv
The ypserv daemon looks up information in its local Network Information Services (NIS) maps. The operations performed by the ypserv daemon are defined for the implementor by the NIS Protocol Specification and for the programmer by the /usr/include/rpcsvc/yp_prot.h header file. Communication with the ypserv daemon is by means of Remote Procedure Calls (RPC).
The ypserv daemon runs only on server machines. The ypserv daemon is started and stopped by the following System Resource Controller (SRC) commands:
startsrc -s ypservstopsrc -s ypservThe ypserv daemon performs the following operations on a specified map within an NIS domain:
| Item | Description |
|---|---|
| Match | Takes a key and returns the associated value. |
| Get_first | Returns the first key-value pair from the map. |
| Get_next | Enumerates the next key-value pair in the map. |
| Get_all | Ships the entire NIS map to a requestor in response to a single RPC request. |
| Get_order_number | Supplies information about a map instead of map entries. The order number actually exists in the map as a key-value pair, but the server does not return it through the normal lookup functions. However, the pair will be visible if you examine the map with the makedbm command. |
| Get_master_name | Supplies information about a map instead of map entries. The master name actually exists in the map as a key-value pair, but the server does not return it through the normal lookup functions. However, the pair will be visible if you examine the map with the makedbm command. |
Log information is written to the /var/yp/ypserv.log file if it exists when the ypserv daemon starts running.
If the /var/yp/securenets file exists, the ypservr command only responds to hosts within the ip range specified in this file.
| Item | Description |
|---|---|
| /etc/rc.nfs | Contains the startup script for the NFS and NIS daemons. |
| /var/yp/ypserv.log | Contains the log for the ypserv daemon. |