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It turns out that at least the mount command and the showmount command
need to query a server's rpcbind daemon. They need to query over
AF_INET6 as well as AF_INET.
libtirpc provides an rpcbind query capability with the rpcb_getaddr(3)
interface, but it takes a hostname and netconfig entry rather than a
sockaddr and a protocol type, and always uses a lengthy timeout. The
former is important to the mount command because it sometimes must
operate using a specific port and IP address rather than depending on
rpcbind and DNS to convert a [hostname, RPC program, netconfig] tuple
to a [socket address, port number, transport protocol] tuple.
The rpcb_getaddr(3) API also always uses a privileged port (at least
for setuid root executables like mount.nfs), which is not required for
an rpcbind query. This can exhaust the local system's reserved port
space quickly.
This patch provides a reserved-port-friendly AF_INET6-capable rpcbind
query C API that can be shared among commands and tools in nfs-utils,
and allows a query to a specified socket address and port rather than
a hostname.
In addition to an rpcbind query interface, this patch also provides a
facility to ping the remote RPC service to ensure that it is operating
as advertised by rpcbind. It's useful to combine an RPC ping with an
rpcbind query because in many cases, components of nfs-utils already
ping an RPC service immediately after receiving a successful GETPORT
result.
There are also a handful of utility routines provided, such as a
functions that can map between [sockaddr, port] and a universal
address.
I've made an attempt to make these new functions build and operate on
systems that do not have libtirpc.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Provide a simple interface that any component of nfs-utils can use to acquire
an RPC CLIENT *. This is an AF_INET6-enabled API, and can also handle
PF_LOCAL sockets if libtirpc is present on the system.
When libtirpc is not available, legacy RPC services will be used instead,
and an attempt to connect to an AF_INET6 address will fail.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The file support/nfs/fstab.c, which is linked into libnfs.a, depends on the
global variable "verbose." This variable is defined and used only in the
mount command, and the functions in fstab.c are used only by the mount
command.
Move fstab.c and support/include/fstab.h to utils/mount. This file
placement is also consistent with at least one other mount helper,
mount.ocfs2.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Neil Brown <neilb@suse.de>
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conn.[ch] are now no longer needed. Clean them out and delete them.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Neil Brown <neilb@suse.de>
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This was only needed for kernels 2.2.14 through 2.2.17.
These have long since been superceded, so remove some dead weight.
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deleted: support/export/keys.c
deleted: support/include/rpcdispatch.h
deleted: support/include/rpcsec.h
deleted: support/include/version.h
deleted: support/include/ypupdate.h
deleted: support/nfs/clients.c
deleted: support/nfs/keytab.c
deleted: support/nfs/ypupdate_xdr.c
deleted: support/rpc/include/Makefile.am
deleted: tools/rpcdebug/neat_idea.c
deleted: utils/mountd/mount_xdr.c
deleted: utils/rquotad/pathnames.h
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Adds the support functions needed for mount and umount. This
functionality will someday be available in the form of shared mount
library.
Signed-off-by: Amit Gud <agud@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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