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nis_ping(3NSL) Networking Services Library Functions nis_ping(3NSL)
NAME
nis_ping, nis_checkpoint - NIS+ log administration functions
SYNOPSIS
cc [ flag ... ] file ... -lnsl [ library ... ]
#include <rpcsvc/nis.h>
void nis_ping(nis_name dirname, uint32_t utime, nis_object *dirobj);
nis_result *nis_checkpoint(nis_name dirname);
DESCRIPTION
nis_ping() is called by the master server for a directory when a change has occurred within that directory. The parameter dirname identi-
fies the directory with the change. If the parameter dirobj is NULL, this function looks up the directory object for dirname and uses
the list of replicas it contains. The parameter utime contains the timestamp of the last change made to the directory. This timestamp is
used by the replicas when retrieving updates made to the directory.
The effect of calling nis_ping() is to schedule an update on the replica. A short time after a ping is received, typically about two min-
utes, the replica compares the last update time for its databases to the timestamp sent by the ping. If the ping timestamp is later, the
replica establishes a connection with the master server and request all changes from the log that occurred after the last update that it
had recorded in its local log.
nis_checkpoint() is used to force the service to checkpoint information that has been entered in the log but has not been checkpointed to
disk. When called, this function checkpoints the database for each table in the directory, the database containing the directory and the
transaction log. Care should be used in calling this function since directories that have seen a lot of changes may take several minutes to
checkpoint. During the checkpointing process, the service will be unavailable for updates for all directories that are served by this
machine as master.
nis_checkpoint() returns a pointer to a nis_result structure. See nis_tables(3NSL). This structure should be freed with nis_freeresult().
See nis_names(3NSL). The only items of interest in the returned result are the status value and the statistics.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
nislog(1M), nis_names(3NSL), nis_tables(3NSL), nisfiles(4), attributes(5)
NOTES
NIS+ might not be supported in future releases of the SolarisTM Operating Environment. Tools to aid the migration from NIS+ to LDAP are
available in the Solaris 9 operating environment. For more information, visit http://www.sun.com/directory/nisplus/transition.html.
SunOS 5.10 18 Dec 2001 nis_ping(3NSL)
