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Signed-off-by: Steve Dickson <steved@redhat.com>
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Moves nfs_probe_statd from mount to nfs support lib to share with statd.
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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License texts contain multiple address for FSF, some wrong.
So update them and replace COPYING file with
http://www.gnu.org/licenses/gpl-2.0.txt
which has a few changes to preamble and commentary.
Also remove extra COPYING file from utils/statd/
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The mount.nfs command must recognize the values of "rdma" and "rdma6"
with the "proto=" mount option. Typically the mount.nfs command
relies on libtirpc or getprotobyname(3) to recognize netids and
translate them to protocol numbers.
RFCs 5665 and 5666 define the "rdma" and "rdma6" netids. IANA defines
a specific port number for NFS over RDMA (20049), but has not provided
a protocol name and number for RDMA transports, and is not expected
to. The best we can do is translate these by hand, as needed, to get
RDMA mount requests to the kernel without erroring out.
Only the forward translation is needed until such time that "rdma" and
"rdma6" start to appear in rpcbind registries. For now, the version
and transport negotiation logic is skipped, avoiding rpcbind queries
for RDMA mounts.
Note: As of kernel 2.6.36, the kernel's NFS over RDMA transport
capability does not support IPv6.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The current mount, umount and showmount code uses
authunix_create_default to get an auth handle. The one provided by glibc
returned a truncated list of groups when there were more than 16 groups.
libtirpc however currently does an abort() in this case, which causes
the program to crash and dump core.
nfs-utils just uses these auth handles for the MNT protocol, so the
group list doesn't make a lot of difference here. Add a new function
that creates an auth handle with a supplemental gids list that consists
only of the primary gid. Have nfs-utils use that function anywhere that
it currently uses authunix_create_default. Also, have the caller
properly check for a NULL return from that function.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Introduce generic helpers for managing socket addresses. These are
general enough that they are useful for pretty much any component of
nfs-utils.
We also include the definition of nfs_sockaddr here, so it can be
shared. See:
https://bugzilla.redhat.com/show_bug.cgi?id=448743
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Introduce a couple of shared functions that can convert netids to
protocol numbers and families, and back.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Introduce address family-agnostic functions that get and set IP port
numbers in socket addresses. We can already replace a few similar
functions in the mount command, and a few more will come up with
statd and sm-notify.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Some RPC errors set fields in rpc_createerr.cf_error in addition
to cf_stat. Be sure to clear _all_ error fields in rpc_createerr
each time through the rpcbind API.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Clean up: Now that getnameinfo(3) is no longer used, the @salen
argument to nfs_sockaddr2universal() is no longer needed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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We needed to guarantee that some RPC programs, such as PMAP, got an
unprivileged port, to prevent exhausting the local privileged port
space sending RPC requests that don't need such privileges.
nfs_get_rpcclient() provides that feature.
However, some RPC programs, such as MNT and UMNT, require a privileged
port. So, let's provide an additional API for this that also supports
IPv6 and setting a destination port.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The getservbyname(3) function is not re-entrant, and anyway,
the man page says it is obsolete. Replace it with a call
to getaddrinfo(3).
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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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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