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This patch is essentially the same as the previous version, but has
been respun to fix up some merge conflicts with some of Chuck's
recent changes.
When we first added tirpc support, we took a "big hammer" approach, and
had it add libtirpc to $LIBS. That had the effect of making it so that
that library was linked into every binary. That's unnecessary, and
wasteful with memory.
Don't let AC_CHECK_LIB add -ltirpc to $LIBS. Instead, have the autoconf
tests set $(LIBTIRPC) in the makefiles, and have the programs that
need it explicitly include that library. In the event that we're not
using libtirpc, then set $LIBTIRPC to a blank string.
This necessitates a change to the bindresvport_sa check too. Since that
library is no longer included in $LIBS, we need to convert that check
to use AC_CHECK_LIB instead of AC_CHECK_FUNCS.
This patch also fixes a subtle bug. If the library was usable, but the
includes were not, the test would set $enable_tirpc to "no", but
HAVE_LIBTIRPC would still be true. That configuration would likely
fail to build.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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I'm about to switch the order of listener creation and dropping root
privileges. rpc.statd will drop privileges first, then create its
listeners. The reason for the new ordering is explained in a
subsequent patch.
However, for non-TI-RPC builds, rpc_init() needs to use a privileged
port to do pmap registrations. For both TI-RPC and non-TI-RPC builds,
CAP_NET_BIND is required in case the admin requests a privileged
listener port on the statd command line.
So that these requirements are met, nsm_drop_privileges() will now
retain CAP_NET_BIND while dropping root.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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For the near future, statd will support IPv6 but exportfs will not.
Thus statd will need a version of matchhostname() that can deal
properly with IPv6 remotes. To reduce the risk of breaking exportfs,
introduce a separate version of matchhostname() for statd to use while
exportfs continues to use the existing AF_INET-only implementation.
Note that statd will never send matchhostname() a hostname string
containing export wildcards, so is_hostame() is not needed in the
statd version of matchhostname(). This saves some computational
expense when comparing hostnames.
A separate statd-specific implementation of matchhostname() allows
some flexibility in the long term, as well. We might want to enrich
the matching heuristics of our SM_NOTIFY, for example, or replace
them entirely with a heuristic that is not dependent upon DNS.
Signed-off-by: Chuck Lever <chuck.lever@oracle.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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To facilitate code sharing between statd and sm-notify (and with other
components of nfs-utils), replace sm-notify's nsm_log() with xlog().
Since opt_quiet is used in only a handful of insignificant cases, it
is removed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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To facilitate code sharing between statd and sm-notify (and with other
components of nfs-utils), replace sm-notify's nsm_log() with xlog().
Since opt_quiet is used in only a handful of insignificant cases, it
is removed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This script is used by mount.nfs to run statd if needed.
It can be locally modified to change arguements if required.
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Ultimately it makes sense to remove remove rpcgen from the nfs-utils
release as it is already in the glibc release. With this patch
you can use the system rpcgen to make sure it works.
It is not default yet, but it might be in a future release.
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statd now execs sm-notify to notify peers and only listens to
monitor requests and remote notifications itself.
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Add sm-notify to the compile/install scripts,
(and fix a compile warning).
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