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librpcsecgss provides authgss_free_private_data() as a pair to
authgss_get_private_data(). libtirpc does not - until recently.
This ommision results in authgss_destroy_context() sending an
incorrect RPCSEC_GSS_DESTROY request when gssd calls AUTH_DESTROY().
The call has been added to libtirpc, so this patch updates nfs-utils
to check for the presense of the function in libtirpc and to set
HAVE_AUTHGSS_FREE_PRIVATE_DATA if it is present.
This is also set unconditionally if librpcsecgss is used.
gssd is changed to test this value rather than HAVE_LIBTIRPC when
chosing whether to call authgss_free_private_data().
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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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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specified, but TIRPC libs or headers aren't present then just throw a
warning and disable it. If it was explicitly specified, then throw an
error and exit if they aren't present.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Data type incompatibilities between the legacy RPC headers and the
TI-RPC headers mean we can't use libtirpc with code that was compiled
against the legacy RPC headers. The definition of rpcprog_t for
example is "unsigned long" in the legacy library, but it's "uint32_t"
for TI-RPC. On 32-bit systems, these types happen to have the same
width, but on 64-bit systems they don't, making more complex data
structures that use these types in fields ABI incompatible.
Adopt a new strategy to deal with this issue. When --enable-tirpc is
set, append "-I/usr/include/tirpc" to the compilation steps. This
should cause the compiler to grab the tirpc/ headers instead of the
legacy headers. Now, for TI-RPC builds, the TI-RPC legacy functions
and the TI-RPC headers will be used. On legacy systems, the legacy
headers and legacy glibc RPC implementation will be used.
A new ./configure option is introduced to allow system integrators to
use TI-RPC headers in some other location than /usr/include/tirpc.
/usr/include/tirpc remains the default setting for this new option.
The gssd implementation presents a few challenges, but it turns out
the gssglue library is similar to the auth_gss pieces of TI-RPC. To
avoid similar header incompatibility issues, gssd now uses libtirpc
instead of libgssglue if --enable-tirpc is specified. There may be
other issues to tackle with gssd, but for now, we just make sure it
builds with --enable-tirpc.
Note also: svc_getcaller() is a macro in both cases that points to
a sockaddr field in the svc_req structure. The legacy version points
to a sockaddr_in type field, but the TI-RPC version points to a
sockaddr_in6 type field.
rpc.mountd unconditionally casts the result of svc_getcaller() to a
sockaddr_in *. This should be OK for TI-RPC as well, since rpc.mountd
still uses legacy RPC calls (provided by glibc, or emulated by TI-RPC)
to set up its listeners, and therefore rpc.mountd callers will always
be from AF_INET addresses for now.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Instead of switching in TI-RPC-specific logic with a function-specific
switch like HAVE_CLNT_VG_CREATE, let's use the more generic
HAVE_LIBTIRPC macro everywhere.
This simplifies ./configure (always a good thing), and makes it more
clear in the source code exactly what the extra conditionally compiled
code is for.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Define an aclocal test for TI-RPC headers and library, and move the
TI-RPC checks earlier in our configure script so other feature checks
can use the availability of TI-RPC to decide what to do.
Since bindresvport_sa is required just for IPv6 support, move that
check to the IPv6 feature tests.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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