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rpc.statd and sm-notify access the same set of files under
/var/lib/nfs/statd, but both have their own code base to handle this.
They should share this code.
In addition, the on-disk format used by statd and friends is
considered a formal interface, so this new code will codify the API
and provide documentation for it.
The shared code handles switching from the default parent statd
directory, reducing privileges at start-up, and managing the NSM
state files, in addition to handling normal operations on the
monitored host and notification lists on disk.
The new code is simply a copy of the same logic that was used in
rpc.statd and sm-notify, but wrapped in a nice API. There should be
minimal behavioral and no on-disk format changes with the new
libnsm.a code.
The new code is more careful to check for bad corner cases.
Occassionally this code may not allow an operation that was permitted
in the past, but hopefully the error reporting has improved enough
that it should be easy to track down any problems.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clean up: Move the .x file and the generated C source for NSM to
libnsm.a, echoing the architecture of mountd and exportfs. This makes
the NSM protocol definitions, data types, and XDR routines available
to be shared across nfs-utils.
This simplifies the addition of other NSM-related code (for example
for testing or providing clustering support), and also provides
public data type definitions that can be used to make sense of the
contents of statd's on-disk database.
Because sim_sm_inter.x still resides in utils/statd, I've left some
rpcgen build magic in utils/statd/Makefile.am.
This is an internal organization change only. This patch should not
affect code behavior in any way.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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