| Commit message (Collapse) | Author | Age | Files | Lines |
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* 'for-2.6.33' of git://linux-nfs.org/~bfields/linux: (42 commits)
nfsd: remove pointless paths in file headers
nfsd: move most of nfsfh.h to fs/nfsd
nfsd: remove unused field rq_reffh
nfsd: enable V4ROOT exports
nfsd: make V4ROOT exports read-only
nfsd: restrict filehandles accepted in V4ROOT case
nfsd: allow exports of symlinks
nfsd: filter readdir results in V4ROOT case
nfsd: filter lookup results in V4ROOT case
nfsd4: don't continue "under" mounts in V4ROOT case
nfsd: introduce export flag for v4 pseudoroot
nfsd: let "insecure" flag vary by pseudoflavor
nfsd: new interface to advertise export features
nfsd: Move private headers to source directory
vfs: nfsctl.c un-used nfsd #includes
lockd: Remove un-used nfsd headers #includes
s390: remove un-used nfsd #includes
sparc: remove un-used nfsd #includes
parsic: remove un-used nfsd #includes
compat.c: Remove dependence on nfsd private headers
...
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The new .h files have paths at the top that are now out of date. While
we're here, just remove all of those from fs/nfsd; they never served any
purpose.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Most of this can be trivially moved to a private header as well.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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This field is never referenced anywhere else. I don't know what it was
intended for.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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With the v4root option now enforced everywhere it should be, it is safe
to advertise support for it to mountd.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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I can't see any use for writeable V4ROOT exports.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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On V4ROOT exports, only accept filehandles that are the *root* of some
export. This allows mountd to allow or deny access to individual
directories and symlinks on the pseudofilesystem.
Note that the checks in readdir and lookup are not enough, since a
malicious host with access to the network could guess filehandles that
they weren't able to obtain through lookup or readdir.
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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We want to allow exports of symlinks, to allow mountd to communicate to
the kernel which symlinks lead to exports, and hence which symlinks need
to be visible on the pseudofilesystem.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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As with lookup, we treat every boject as a mountpoint and pretend it
doesn't exist if it isn't exported.
The preexisting code here is confusing, but I haven't yet figured out
how to make it clearer.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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We treat every object as a mountpoint and pretend it doesn't exist if
it isn't exported.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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If /A/mount/point/ has filesystem "B" mounted on top of it, and if "A"
is exported, but not "B", then the nfs server has always returned to the
client a filehandle for the mountpoint, instead of for the root of "B",
allowing the client to see the subtree of "A" that would otherwise be
hidden by B.
Disable this behavior in the case of V4ROOT exports; we implement the
path restrictions of V4ROOT exports by treating *every* directory as if
it were a mountpoint, and allowing traversal *only* if the new directory
is exported.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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NFSv4 differs from v2 and v3 in that it presents a single unified
filesystem tree, whereas v2 and v3 exported multiple filesystem (whose
roots could be found using a separate mount protocol).
Our original NFSv4 server implementation asked the administrator to
designate a single filesystem as the NFSv4 root, then to mount
filesystems they wished to export underneath. (Often using bind mounts
of already-existing filesystems.)
This was conceptually simple, and allowed easy implementation, but
created a serious obstacle to upgrading between v2/v3: since the paths
to v4 filesystems were different, administrators would have to adjust
all the paths in client-side mount commands when switching to v4.
Various workarounds are possible. For example, the administrator could
export "/" and designate it as the v4 root. However, the security risks
of that approach are obvious, and in any case we shouldn't be requiring
the administrator to take extra steps to fix this problem; instead, the
server should present consistent paths across different versions by
default.
These patches take a modified version of that approach: we provide a new
export option which exports only a subset of a filesystem. With this
flag, it becomes safe for mountd to export "/" by default, with no need
for additional configuration.
We begin just by defining the new flag.
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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This was an oversight; it should be among the export flags that can be
allowed to vary by pseudoflavor. This allows an administrator to (for
example) allow auth_sys mounts only from low ports, but allow auth_krb5
mounts to use any port.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Soon we will add the new V4ROOT flag, and allow the INSECURE flag to
vary by pseudoflavor. It would be useful for nfs-utils (for example,
for improved exportfs error reporting) to be able to know when this
happens. Use this new interface for that purpose.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Lots of include/linux/nfsd/* headers are only used by
nfsd module. Move them to the source directory
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Only linux/nfsd/syscall.h is actually used. Remove the
other nfsd #includes, so they can be moved to source
directory.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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In what history where these ever needed? Well not
any more.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Some un-used includes removed.
This patch is in an effort to cleanup nfsd headers and move
private definitions to source directory.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Some un-used includes removed.
In an effort to cleanup nfsd headers and move private
definitions to source directory.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Some un-used includes removed.
This patch is in an effort to cleanup nfsd headers and move
private definitions to source directory.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Tested-by: Grant Grundler <grundler@parisc-linux.org>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Two nfsd related headers where included but never actually
used. The linux/nfsd/nfsd.h file will eventually be moved
to fs/nfsd directory as it is only needed by nfsd itself.
There are 3 more compat.c files in the Kernel at other ARCHs
that wrongly #include nfsd headers. Once these are fixed the
headers can be moved.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Now that the headers are fixed and carry their own wait, all fs/nfsd/
source files can include a minimal set of headers. and still compile just
fine.
This patch should improve the compilation speed of the nfsd module.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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* Add includes that are directly used by headers
* Remove includes that are not needed
These are the changes made:
[xdr.h]
struct nfsd_readdirres has an embedded struct readdir_cd from nfsd.h
fixing that we can drop other includes
[xdr4.h]
embedded types defined both at state.h and nfsd.h
[syscall.h]
After export.h fix none of these stuff is needed.
fix extra space in # include <> statement
[stats.h]
does not need <linux/nfs4.h> but was export to user-mode
so I don't touch it
[state.h]
embedded types from nfsfh.h like struct knfsd_fh. bringing that
eliminates the need for all other includes
[nfsfh.h]
directly manipulating types from sunrpc/svc.h.
Removed Other unused headers.
[nfsd.h]
removed unused headers include
[export.h]
lots of sunrpc/svc.h types and a single prototype declaration
with pointer from nfsfh.h, but all users of export.h do need
nfsfh.h any way. remove now un-needed include.
[const.h]
Unfixed (not independent)
[cache.h]
could do with a forward declaration of "struct svc_rqst;"
from sunrpc/svc.h but all users absolutely will need
sunrpc/svc.h it is easier overall this way.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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An header should be compilation independent, .i.e pull in
any header who's declarations are directly used by this header.
And not let users re-include all it's dependencies all over
again.
[At the end of the day what's the use of a header if it does
not have more then one user?]
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Remove include of two headers never used by this file.
Doing so exposed a missing #include <linux/types.h> in
include/linux/sunrpc/rpc_rdma.h.
I did not see any other users dependency but if exist they
should be fixed since these headers are totally irrelevant
to here.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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This doesn't appear to be useful.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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NFSv4 opens may function as locks denying other NFSv4 users the rights
to open a file.
We're requiring a user to have write permissions before they can deny
write. We're *not* requiring a user to have write permissions to deny
read, which is if anything a more drastic denial.
What was intended was to require write permissions for DENY_READ.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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All nfsd security depends on the security checks in fh_verify, and
especially on nfsd_setuser().
It therefore bothers me that the nfsd_setuser call may be made from
three different places, depending on whether the filehandle has already
been mapped to a dentry, and on whether subtreechecking is in force.
Instead, make an unconditional call in fh_verify(), so it's trivial to
verify that the call always occurs.
That leaves us with a redundant nfsd_setuser() call in the subtreecheck
case--it needs the correct user set earlier in order to check execute
permissions on the path to this filehandle--but I'm willing to accept
that minor inefficiency in the subtreecheck case in return for more
straightforward permission checking.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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This reverts commit 59a252ff8c0f2fa32c896f69d56ae33e641ce7ad.
This helps in an entirely cached workload but not necessarily in
workloads that require waiting on disk.
Conflicts:
include/linux/sunrpc/svc.h
net/sunrpc/svc_xprt.c
Reported-by: Simon Kirby <sim@hostway.ca>
Tested-by: Jesper Krogh <jesper@krogh.cc>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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None of this stuff is used outside nfsd, so move it out of the common
linux include directory.
Actually, probably none of the stuff in include/linux/nfsd/nfsd.h really
belongs there, so later we may remove that file entirely.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Oops: I missed two files in the first commit that created this
directory.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Modify the NFS server to register the NFS_ACL services with the rpcbind
daemon. This allows the client to ping for the existence of the NFS_ACL
support via commands such as "rpcinfo -t <server> nfs_acl".
This patch also modifies the NFS_ACL support so that responses to
version 2 NULLPROC requests can be made.
The changelog for the patch which turned off this functionality
mentioned something about not registering the NFS_ACL as being part of
some tradition. I can't find this tradition and the only other
implementation which supports NFS_ACL does register them with the
rpcbind daemon.
Signed-off-by: Peter Staubach <staubach@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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We have been doing some extensive testing of Linux support for ACLs on
NFDS v4. We have noticed that the server rejects ACLs where the groups
are out of order, for example, the following ACL is rejected:
A::OWNER@:rwaxtTcCy
A::user101@domain:rwaxtcy
A::GROUP@:rwaxtcy
A:g:group102@domain:rwaxtcy
A:g:group101@domain:rwaxtcy
A::EVERYONE@:rwaxtcy
Examining the server code, I found that after converting an NFS v4 ACL
to POSIX, sort_pacl is called to sort the user ACEs and group ACEs.
Unfortunately, a minor bug causes the group sort to be skipped.
Signed-off-by: Frank Filz <ffilzlnx@us.ibm.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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For nfsd we provide users the option of mapping uid's to server-side
supplementary group lists. That makes sense for nfsd, but not
necessarily for other rpc users (such as the callback client).
So move that lookup to svcauth_unix_set_client, which is a
program-specific method.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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We do the same calculation in a couple places; use a helper function,
and add a little documentation, in the hopes of preventing bugs like
that fixed in the last patch.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Unbalanced calculations on creation and destruction of sessions could
cause our estimate of cache memory used to become negative, sometimes
resulting in spurious SERVERFAULT returns to client CREATE_SESSION
requests.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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We're adding enough nfs documentation that it may as well have its own
subdirectory.
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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ca_maxresponsesize and ca_maxrequest size include the RPC header.
sv_max_mesg is sv_max_payolad plus a page for overhead and is used in
svc_init_buffer to allocate server buffer space for both the request and reply.
Note that this means we can service an RPC compound that requires
ca_maxrequestsize (MAXWRITE) or ca_max_responsesize (MAXREAD) but that we do
not support an RPC compound that requires both ca_maxrequestsize and
ca_maxresponsesize.
Signed-off-by: Andy Adamson <andros@netapp.com>
[bfields@citi.umich.edu: more documentation updates]
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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We really shouldn't hit this case at all, and forthcoming kernel and
nfs-utils changes should eliminate this case; if it does happen,
consider it a bug rather than reporting an error that doesn't really
make sense for the operation (since there's no reason for a server to be
accepting v4 traffic yet have no root filehandle).
Also move some exp_pseudoroot code into a helper function while we're
here.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Break out some of nfsd_lookup_dentry into helper functions.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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3c394ddaa7ea4205f933fd9b481166b2669368a9 "nfsd4: nfsv4 clients should
cross mountpoints" forgot to handle lookups of parents directories.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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Caught by Benny, thanks!
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: temporarily disable discard granularity
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Commit 86b37281411cf1e9bc0a6b5406c45edb7bd9ea5d adds a check for
misaligned stacking offsets, but it's buggy since the defaults are 0.
Hence all dm devices that pass in a non-zero starting offset will
be marked as misaligned amd dm will complain.
A real fix is coming, in the mean time disable the discard granularity
check so that users don't worry about dm reporting about misaligned
devices.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (26 commits)
net: sh_eth alignment fix for sh7724 using NET_IP_ALIGN V2
ixgbe: allow tx of pre-formatted vlan tagged packets
ixgbe: Fix 82598 premature copper PHY link indicatation
ixgbe: Fix tx_restart_queue/non_eop_desc statistics counters
bcm63xx_enet: fix compilation failure after get_stats_count removal
packet: dont call sleeping functions while holding rcu_read_lock()
tcp: Revert per-route SACK/DSACK/TIMESTAMP changes.
ipvs: zero usvc and udest
netfilter: fix crashes in bridge netfilter caused by fragment jumps
ipv6: reassembly: use seperate reassembly queues for conntrack and local delivery
sky2: leave PCI config space writeable
sky2: print Optima chip name
x25: Update maintainer.
ipvs: fix synchronization on connection close
netfilter: xtables: document minimal required version
drivers/net/bonding/: : use pr_fmt
can: CAN_MCP251X should depend on HAS_DMA
drivers/net/usb: Correct code taking the size of a pointer
drivers/net/cpmac.c: Correct code taking the size of a pointer
drivers/net/sfc: Correct code taking the size of a pointer
...
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Fix sh_eth for sh7724 by adding NET_IP_ALIGN support V2.
Without this patch the receive data is misaligned.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the 82598 is fed 802.1q packets, it chokes with
an error of the form:
ixgbe: eth0: ixgbe_tx_csum: partial checksum but proto=81!
As the logic there was not smart enough to look into
the vlan header to pick out the encapsulated protocol.
There are times when we'd like to send these packets
out without having to configure a vlan on the interface.
Here we check for the vlan tag and allow the packet to
go out with the correct hardware checksum.
This patch is a clone of a previously submitted patch by
Arthur Jones <ajones@riverbed.com> for igb (Commit -
fa4a7ef36ec834fee1719636b30d2f28f4cb0166).
Signed-off-by: Gurucharan Shetty <gshetty@riverbed.com>
Signed-off-by: Arthur Jones <ajones@riverbed.com>
Acked-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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