and server. This replaces the RPC implementation of the NFS client and
server with the newer RPC implementation originally developed
(actually ported from the userland sunrpc code) to support the NFS
Lock Manager. I have tested this code extensively and I believe it is
stable and that performance is at least equal to the legacy RPC
implementation.
The NFS code currently contains support for both the new RPC
implementation and the older legacy implementation inherited from the
original NFS codebase. The default is to use the new implementation -
add the NFS_LEGACYRPC option to fall back to the old code. When I
merge this support back to RELENG_7, I will probably change this so
that users have to 'opt in' to get the new code.
To use RPCSEC_GSS on either client or server, you must build a kernel
which includes the KGSSAPI option and the crypto device. On the
userland side, you must build at least a new libc, mountd, mount_nfs
and gssd. You must install new versions of /etc/rc.d/gssd and
/etc/rc.d/nfsd and add 'gssd_enable=YES' to /etc/rc.conf.
As long as gssd is running, you should be able to mount an NFS
filesystem from a server that requires RPCSEC_GSS authentication. The
mount itself can happen without any kerberos credentials but all
access to the filesystem will be denied unless the accessing user has
a valid ticket file in the standard place (/tmp/krb5cc_<uid>). There
is currently no support for situations where the ticket file is in a
different place, such as when the user logged in via SSH and has
delegated credentials from that login. This restriction is also
present in Solaris and Linux. In theory, we could improve this in
future, possibly using Brooks Davis' implementation of variant
symlinks.
Supporting RPCSEC_GSS on a server is nearly as simple. You must create
service creds for the server in the form 'nfs/<fqdn>@<REALM>' and
install them in /etc/krb5.keytab. The standard heimdal utility ktutil
makes this fairly easy. After the service creds have been created, you
can add a '-sec=krb5' option to /etc/exports and restart both mountd
and nfsd.
The only other difference an administrator should notice is that nfsd
doesn't fork to create service threads any more. In normal operation,
there will be two nfsd processes, one in userland waiting for TCP
connections and one in the kernel handling requests. The latter
process will create as many kthreads as required - these should be
visible via 'top -H'. The code has some support for varying the number
of service threads according to load but initially at least, nfsd uses
a fixed number of threads according to the value supplied to its '-n'
option.
Sponsored by: Isilon Systems
MFC after: 1 month
-h bindip
Specify specific IP addresses to bind to for TCP and UDP requests.
This option may be specified multiple times. If no -h option is
specified, mountd will bind to INADDR_ANY. Note that when specifying
IP addresses with -h, mountd will automatically add 127.0.0.1 and if
IPv6 is enabled, ::1 to the list.
PR: bin/114097
Reviewed by: pjd (an eariler version of the patch)
MFC after: 1 week
change fixes this.
Reported by: Lin Jui-Nan Eric < ericlin dot jnlin at gmail dot com >
Submitted by: Erik Trulsson < ertr1013 at student dot uu dot se > (commit is inspired by a patch from Erik)
Pointyhat to: me
Reviewed by: stable@
Approved by: imp (mentor)
MFC after: 3 days
parameter to try to delete an NFS export. It won't work, and will log
a spurious warning to syslog.
Tested by: Arno J. Klaassen <arno at heho dot snv dot jussieu dot fr>
MFC after: 3 days
that this provokes. "Wherever possible" means "In the kernel OR NOT
C++" (implying C).
There are places where (void *) pointers are not valid, such as for
function pointers, but in the special case of (void *)0, agreement
settles on it being OK.
Most of the fixes were NULL where an integer zero was needed; many
of the fixes were NULL where ascii <nul> ('\0') was needed, and a
few were just "other".
Tested on: i386 sparc64
attempting to export the non-root of a filesystem with -alldirs. This
pilot error seems to be very common, and the "could not remount" error
message doesn't give much hints about the real reason. See the old PR
below for an example.
While i was at it, make it possible to entirely omit the often
annoying error message in that case by specifying the "quiet" exports
flag. This allows to specify something like
/cdrom -alldirs,ro,quiet <where to export to>
which will silently fail if nothing is mounted under /cdrom, but do
the rigth thing as soon as you mount something.
While doing this, i've put the embedded example in the exports(5) man
page into a subsection of its own as it ought to be.
Thanks for Paul Southworth for reminding me about this problem.
PR: bin/4448
MFC after: 1 month
/etc/exports. Oversized lines were unlikely due to the large 10k
limit, but any found would cause mountd to exit with an error. Also
fix one or two compiler warnings.
It does not help modern compilers, and some may take some hit from it.
(I also found several functions that listed *every* of its 10 local vars with
"register" -- just how many free registers do people think machines have?)
spares (the size of the field was changed from u_short to u_int to
reflect what it really ends up being). Accordingly, change users of
xucred to set and check this field as appropriate. In the kernel,
this is being done inside the new cru2x() routine which takes a
`struct ucred' and fills out a `struct xucred' according to the
former. This also has the pleasant sideaffect of removing some
duplicate code.
Reviewed by: rwatson
backslash as nothing, treat it like a space so that adjacent lines
aren't glued together.
PR: 8479
Submitted by: Adrian Filipi-Martin <adrian@ubergeeks.com>
attempting to remove nonexistant exports with MNT_DELEXPORT returns
an error; before this change it always succeeded. This caused
mountd(8) to log "can't delete exports for /whatever" warnings.
Change the error code from EINVAL to a more specific ENOENT, and
make mountd ignore this error when deleting the export list. I
could have just restored the previous behaviour of returning success,
but I think an error return is a useful diagnostic.
Reviewed by: phk
always look up -network and -mask addresses numerically before
trying getnetbyname(). Without this, we may end up attempting DNS
queries on silly names such as "127.0.0.0.my-domain.com". See the
commit log from revisions 1.21 and 1.20 for further details.
removes the last path component until the mount() succeeds. However,
the code never checks if it has passed the mountpoint, so in some
cases where the mount() never succeeds, it can end up applying the
flags from a mounted filesystem to the underlying one.
Add a sanity check to the code which removes the last path component:
test that the fsid associated with the new path is the same as that
of the old one.
PR: bin/7872
