openafs.git
12 years agoWindows: osi_mutex / osi_rwlock changes
Jeffrey Altman [Sat, 26 Nov 2011 22:26:50 +0000]
Windows: osi_mutex / osi_rwlock changes

Reorganize the osi_mutex and osi_rwlock structure so
that all counters are 32-bit and pointers are
aligned.  This requires adding padding fields.

Move lock validation checks within the critical section.

Include additional assertions checking the ownership
state and protecting against under/overflows.

Increase the size of the rwlock tid array to support
a larger number of simultaneous readers.

Change-Id: Ia46684c601a1a589a210a36862ae6ad6448a435e
Reviewed-on: http://gerrit.openafs.org/6130
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: convert daemons threads to pthreads
Jeffrey Altman [Sat, 26 Nov 2011 15:55:27 +0000]
Windows: convert daemons threads to pthreads

The daemon threads make calls to Rx and therefore need to
be created with the pthread package to prevent the threads
from being tracked as 'native' threads by the pthread_thread_shutdown
thread which can only track up to 63 native threads.

Change-Id: I8d096be9398a0a541bb59eb245cd7b3fe6f3843c
Reviewed-on: http://gerrit.openafs.org/6119
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoFBSD: cleanup dvp locking for ISDOTDOT
Ben Kaduk [Sun, 13 Nov 2011 18:12:50 +0000]
FBSD: cleanup dvp locking for ISDOTDOT

This is a more correct version of
c2ed2577f9c16df3088158fb593d7aab6e8690d0, which was reverted since
it caused build issues on some versions and kernel panics on others.

We do want to always unlock dvp before calling over the network
in the ISDOTDOT case, but be sure to use the proper spelling
for this operation (as the syntax has changed between FreeBSD versions).
This requires not unlocking dvp right after the afs_lookup() call if
it succeeds, letting us just lock the "child" vp (which is actually
the parent starting from '/') first, and then re-lock dvp.

The error case of afs_lookup() was already handled correctly in
this logic, which is to say that it was incorrect before this change,
attempting to recursively lock dvp which causes a panic.

Change-Id: Ide29e47991413dadc3a2b5948f0f6c5bfa2911c4
Reviewed-on: http://gerrit.openafs.org/6127
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agonamei: force-close fd on read or write error
Derrick Brashear [Sun, 27 Nov 2011 15:42:59 +0000]
namei: force-close fd on read or write error

if we errored, just reallyclose so we'll get a new fd

Change-Id: I55de45a96dc7fab481a49c10c68f2ebc0d4ea27c
Reviewed-on: http://gerrit.openafs.org/6126
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoLinux: 3: Update specfile to know about 3.* kernels.
Edward Z. Yang [Sun, 27 Nov 2011 00:32:51 +0000]
Linux: 3: Update specfile to know about 3.* kernels.

Update spec file to be consistent with acinclude.m4 with regards to
sysnames.  We don't bother updating the code inside the legacy kernel
build section, as it doesn't get triggered for 3.* kernels (it should
probably get cleaned up at some point.)

Also, fix a bug in error message printing of unrecognized kernel.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>

Change-Id: Ife6046db0bec981be59aa053f63ae71458da7167
Reviewed-on: http://gerrit.openafs.org/6120
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoUnix CM: Fix PutVolume in afs_BlackListOnce
Simon Wilkinson [Wed, 23 Nov 2011 16:30:55 +0000]
Unix CM: Fix PutVolume in afs_BlackListOnce

It isn't safe to keep accessing a structure once we have Put our
reference to it.

Change-Id: I6f23a054c3ccde21aa17e07d06dd3c6e7761c098
Reviewed-on: http://gerrit.openafs.org/6117
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: add trace logging to Pioctl File Info Query
Jeffrey Altman [Tue, 22 Nov 2011 14:31:45 +0000]
Windows: add trace logging to Pioctl File Info Query

Change-Id: I357518a341dd97aa94c30ae9c0defa56a97eb920
Reviewed-on: http://gerrit.openafs.org/6110
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: _._AFS_IOCTL_._ size is zero
Jeffrey Altman [Tue, 22 Nov 2011 21:36:18 +0000]
Windows: _._AFS_IOCTL_._ size is zero

When replying to a FileStandardInformation query on the pioctl
special file, the size of the file is 0.  Failure to return 0
can result in an anti-virus program attempting to read the file
via a paging request which will fail.

Change-Id: I83f2f40cca99c04a5fe06546f19bdf96dfbb4951
Reviewed-on: http://gerrit.openafs.org/6109
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: RDR_InvalidateObject do not hold locks
Jeffrey Altman [Tue, 22 Nov 2011 02:47:38 +0000]
Windows: RDR_InvalidateObject do not hold locks

Do not hold any locks when calling the afs redirector.  Holding
a lock can cause a deadlock.

Change-Id: I5fb493d68e3cf3a8e58024b3b9f54349928f84c3
Reviewed-on: http://gerrit.openafs.org/6105
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: cm_GetSCache do not release unheld lock
Jeffrey Altman [Mon, 21 Nov 2011 18:14:40 +0000]
Windows: cm_GetSCache do not release unheld lock

if cm_GetNewSCache() fails, an attempt would be made to
release cm_scacheLock which is not held.  However, it should
be noted that cm_GetNewSCache() cannot fail without itself
triggering a panic.

Change-Id: I316e33712440c2bd816294ad788ad125ab7b4a73
Reviewed-on: http://gerrit.openafs.org/6103
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Use Jenkins' Hash
Jeffrey Altman [Mon, 21 Nov 2011 13:42:13 +0000]
Windows: Use Jenkins' Hash

Replace the non-string hash functions with Jenkins' Hash
derived hash values.

Bump the cache version value because the hash function has
changed.

Change-Id: I9de789a48abab38ceb16e928bfc0c10e2a88747e
Reviewed-on: http://gerrit.openafs.org/6102
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoopr: Add Bob Jenkins's hash functions
Simon Wilkinson [Sun, 20 Nov 2011 23:40:51 +0000]
opr: Add Bob Jenkins's hash functions

This imports a small subset of Bob Jenkins lookup3.c hash functions
into the opr library. At present we only import the subset of this
that deals with aligned arrays of integers, as this addresses our
immediate need.

It seems likely that if we're interested in a hash function for string
arrays (or other arbitrary data), that more recent functions such like
SpookyHash (from Bob Jenkins, again) or CityHash (from Google) may be
a better solution.

The immediate use case for this is removing the use of the '%' operator
when indexing speed critical hash tables, as well as ensuring fairer
distribution of entries across these tables.

A short set of test cases is also provided

Change-Id: I0ae26382e77da02204a30a95747f7d6de8c4f24a
Reviewed-on: http://gerrit.openafs.org/6095
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoLinux: 3.2: Use set_nlink to update i_nlink
Anders Kaseorg [Mon, 21 Nov 2011 00:00:00 +0000]
Linux: 3.2: Use set_nlink to update i_nlink

As of v3.2-rc1~84^2~1, struct inode.i_nlink is now const to prevent
direct modification.

Change-Id: If0a38ffb7f9964e23f5e64c900ae92f56fb77def
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Reviewed-on: http://gerrit.openafs.org/6096
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoafs: Leave cellnum alone for explicit mtpt cell
Andrew Deason [Tue, 15 Nov 2011 19:18:48 +0000]
afs: Leave cellnum alone for explicit mtpt cell

When a mountpoint is given an explicit cell, don't alter cellnum.
Cellnum represents the cell for the parent, and is used for
determining whether or not we're crossing a cell boundary.

Previously, this code forced the mount point to always be treated as
foreign (for a mountpoint prefixed with a cell name), or to always be
treated as local (for a mountpoint prefixed with a cell number).

Change-Id: I7b98ccc94bf61dc3d7be0b7d6b54019cd797e884
Reviewed-on: http://gerrit.openafs.org/6051
Reviewed-by: Marc Dionne <marc.c.dionne@gmail.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agonamei: tweak getlinkbyte error handling
Jeffrey Altman [Fri, 11 Nov 2011 16:00:47 +0000]
namei: tweak getlinkbyte error handling

in the event of a pread error, add the same error exit path
trigger that we have elsewhere

Change-Id: Id7a371f3fd710f3c6dad21bccb0662cf8562d99f
Reviewed-on: http://gerrit.openafs.org/5843
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoauth: avoid excessive stat of cellservdb
Michael Meffie [Thu, 27 Oct 2011 21:53:47 +0000]
auth: avoid excessive stat of cellservdb

The modified time resolution is one second, so only
stat the cellservdb file at most only once per second.

Change-Id: I7d9a58f9af72b8c36b50374e49c07b4db85285e0
Reviewed-on: http://gerrit.openafs.org/5743
Reviewed-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agovol: rate-limit volume usage updates
Michael Meffie [Thu, 3 Nov 2011 21:09:28 +0000]
vol: rate-limit volume usage updates

Add threshold and time rate-limit parameters for volume usage
updates to disk.  This reduces the amount of i/o needed for
volume usage statistics on very busy fileservers.  Set the
default to limit updates to one every 5 seconds per volume.

Change-Id: I6b4274476ef6b8f9e4288b109d5a3edbdea6e91c
Reviewed-on: http://gerrit.openafs.org/5803
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Reviewed-by: Tom Keiser <tkeiser@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

12 years agoWindows: RDR_RequestFileExtentsAsync unheld lock
Jeffrey Altman [Fri, 18 Nov 2011 14:54:43 +0000]
Windows: RDR_RequestFileExtentsAsync unheld lock

commit 55f5f356af2ef884413bd656f100055741ae871b forgot to remove
a lock_ReleaseWrite(&scp->rw) in RDR_RequestFileExtentsAsync().

Change-Id: I787ceddcada3659c7b2fae9bb90aa005a71d2ceb
Reviewed-on: http://gerrit.openafs.org/6075
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: must obtain and release an actual lock
Jeffrey Altman [Fri, 18 Nov 2011 05:39:24 +0000]
Windows: must obtain and release an actual lock

Change-Id: I2bb490ba3c1db05c4dc7660ca7319d7d96d16c0f
Reviewed-on: http://gerrit.openafs.org/6072
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: non-release only worker threads can release
Jeffrey Altman [Thu, 17 Nov 2011 05:30:24 +0000]
Windows: non-release only worker threads can release

There are two classes of worker threads created by the service
and donated to the afsredir as part of the reverse ioctl processing
model.  Normal workers can process any kind of ioctl and Release
Only workers that can only process release extent events.

Use a KeWaitForMultipleEvents in the normal worker case to permit
processing any type of event.  The previous implementation excluded
release extent ioctls from the normal workers.

Change-Id: I05e86f62c08e322cf7aa9bdd2fd325919bcbfe8f
Reviewed-on: http://gerrit.openafs.org/6071
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoauth: initKeys before first error exit path
Jeffrey Altman [Wed, 16 Nov 2011 05:29:34 +0000]
auth: initKeys before first error exit path

In afsconf_OpenInternal() _afsconf_InitKeys() must be called
before the first opportunity to call afsconf_CloseInternal()
or a crash can occur if the CellServDB file cannot be parsed.

Change-Id: I5b2487056a24d0c4ad78921d85df755758c7679e
Reviewed-on: http://gerrit.openafs.org/6059
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Do not install IBM AFS HLP files
Jeffrey Altman [Wed, 16 Nov 2011 15:33:41 +0000]
Windows: Do not install IBM AFS HLP files

The IBM AFS HLP files are so out of date at this point
that they are simply confusing.  They reference tools and screens
that no longer exist and claim the product is "IBM AFS".  Incorrect
documentation is worse than no documentation.

The HLP files cannot be updated since we do not have the sources.

HLP file format is no longer supported on Windows Vista or 7.

The afs-nt.hlp file will continue to be installed conditionally
when afscreds.exe is installed but the shortcut to it in the
Start menu is being removed.  afscreds.exe is not installed by
default.

Change-Id: I3443a5c4ca65472a16cbf7ae1d52da39e917136a
Reviewed-on: http://gerrit.openafs.org/6065
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: buf_CleanAsyncLocked dirty range only
Jeffrey Altman [Tue, 15 Nov 2011 23:35:26 +0000]
Windows: buf_CleanAsyncLocked dirty range only

buf_CleanAsyncLocked() should not instruct cm_BufWrite() to
write a full chunk if the current buffer is the only one that
is dirty.  cm_BufWrite() will determine if it is appropriate
to fill a full chunk when storing.  Instructing it to check
a full chunk forces it to do more work than necessary.

Change-Id: Ie140d405147d700196532b72f04885a301a2550f
Reviewed-on: http://gerrit.openafs.org/6054
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: create scache->redirMx to reduce contention
Jeffrey Altman [Tue, 15 Nov 2011 23:23:46 +0000]
Windows: create scache->redirMx to reduce contention

Relying on the cm_scache_t.rw lock to protect the cm_scache_t.redirQueue*
results in a large amount of contention between processing extent
requests and releases from the afs redirector and the threads attempting
to read from or write data to the file server.   There is no reason why
the same lock must be used.  Allocate a dedicated mutex to protect the
queue.

By placing the new mutex after the buf_globalLock in the locking
hierarchy it permits the lock acquisition logic for extent processing
to be simplified further reducing cm_scache_t.rw lock transitions.

Change-Id: Id2ded86c1f3757a2f1071c8cf39f2fbc6bcfcfaa
Reviewed-on: http://gerrit.openafs.org/6053
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Increase default number of daemon threads
Jeffrey Altman [Wed, 16 Nov 2011 00:03:14 +0000]
Windows: Increase default number of daemon threads

With the SMB interface there was little benefit to having
a large background daemon worker pool since it was so rarely
used.  Now that the redirector does everything in the background
daemon workers, increase the default from 4 to 16 threads.

Change-Id: I319182e4c539c14d06fe62dde2b41a159e4edea6
Reviewed-on: http://gerrit.openafs.org/6058
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: cm_SetupStoreBIOD use firstModOffset chunk
Jeffrey Altman [Wed, 16 Nov 2011 00:00:05 +0000]
Windows: cm_SetupStoreBIOD use firstModOffset chunk

When cm_SetupStoreBIOD attempts to store a chunk to the file
server it should not use *inOffsetp as the start of the range.
There is no guarantee that the buffer at *inOffsetp is dirty.
Instead use firstModOffset which refers to the first known
dirty buffer in the range specified by the caller.  Attempt
to fill a chunk of consecutive dirty buffers from that point.

Change-Id: I468e896b046192461d6fe0dc3669e5feeb7886ba
Reviewed-on: http://gerrit.openafs.org/6057
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Fairness for background operations
Jeffrey Altman [Tue, 15 Nov 2011 23:40:21 +0000]
Windows: Fairness for background operations

The background daemon worker pool is responsible for processing
background Store and Fetch operations.  With the SMB interface
primary store and fetch operations are performed in the SMB worker
thread which makes sense since those operations must be synchronous
to the incoming request.

With the AFS redirector interface almost all of the work is performed
by the background daemon worker pool.  It is therefore critical that
the workers not get stuck in a state that starves applications.
For example, copy of a file that is larger than the cache to \\AFS
will result in a background store request for each chunk size of
the file.  If each worker thread grabs one to process, only one will
make progress and the rest will block.  If a cleanup operation
(aka handle close) occurs the entire file will be flushed to the
server synchronously in the redirector worker thread.  That thread
will cause of the background daemon threads to block.

Any subsequent fetch data requests that get queued behind the list
of stores will in turn block until they clear.  This behavior is not
fair.

This patchset adds a new test to the cm_BkgDaemon() request
selection loop, cm_RequestWillBlock().  If a request will block it
is skipped.  If there are no requests to process that would not have
blocked, the worker will sleep for 25ms instead of the usual 1s.

For BkgStore operations, the CM_SCACHEFLAG_DATASTORING flag is
used to indicating a blocking state.

For BkgFetch and PreFetch operations, the CM_BUF_WRITING and
CM_BUF_READING flags on the first cm_buf_t of the range is used
to indicate a blocking state.

Change-Id: I95d9d1f14dbe0c7d717e6a7253ccfb10a9fac851
Reviewed-on: http://gerrit.openafs.org/6056
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agovlserver: Avoid atoi for vol ids
Andrew Deason [Tue, 15 Nov 2011 17:53:12 +0000]
vlserver: Avoid atoi for vol ids

Change-Id: I27c30f9320ea6d2093846148ad455eda71b0b713
Reviewed-on: http://gerrit.openafs.org/6050
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Create default Security Descriptor
Jeffrey Altman [Tue, 15 Nov 2011 14:03:59 +0000]
Windows: Create default Security Descriptor

A misplaced #endif prevented the allocation of a default
security descriptor.  This results in STATUS_INSUFFICIENT_RESOURCES
errors.

FIXES 130284

Change-Id: I9c1d67368a1b5d770a4c9a981bdb4a24f8ad3c8e
Reviewed-on: http://gerrit.openafs.org/6048
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: interlocked refCount increment in cm_GetSCache
Jeffrey Altman [Mon, 14 Nov 2011 22:49:45 +0000]
Windows: interlocked refCount increment in cm_GetSCache

Failure to use interlocked operations in cm_GetSCache can
result in an under count

Change-Id: I370bcb9ac8b40f1c1b7ea3b7647fc76e3a554e2c
Reviewed-on: http://gerrit.openafs.org/6046
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: netidmgr krb5_cc_get_principal can fail
Jeffrey Altman [Sun, 13 Nov 2011 17:06:18 +0000]
Windows: netidmgr krb5_cc_get_principal can fail

Do not dereference a NULL pointer if krb5_cc_get_principal fails.

Change-Id: Ic213f0c41249931441bcedaf551acaa160ff7f0f
Reviewed-on: http://gerrit.openafs.org/6016
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: smb_ReceiveNTCreateX create smb_fid earlier
Jeffrey Altman [Sat, 12 Nov 2011 23:33:18 +0000]
Windows: smb_ReceiveNTCreateX create smb_fid earlier

smb_ReceiveNTCreateX() calls cm_CheckNTOpen() which now
requires the smb_fid_t allocated fid value for use in share
mode locking.   Move the allocation of the smb_fid earlier
in the function and apply necessary cleanup in error paths.

Change-Id: Iee0e39cdf393bfd245829bdfb42ddfba63908451
Reviewed-on: http://gerrit.openafs.org/6004
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: cm_GetSCache avoid holding cm_scacheLock
Jeffrey Altman [Sat, 12 Nov 2011 22:32:06 +0000]
Windows: cm_GetSCache avoid holding cm_scacheLock

cm_GetSCache used to hold cm_scacheLock write-locked from
start to finish except that it didn't.  There were several
places where cm_scacheLock was dropped and reacquired due
to lock ordering requirements.  Unfortunately, this has
two problems. First, the function isn't very fast in the
most common case since cm_scacheLock is write-locked for
the search for an existing FID.  Second, there is a race
that results when cm_GetNewSCache() drops the cm_scacheLock.

To make things faster, use a read-lock for the common case.

To avoid the race, if the FID cannot be located, call
cm_GetNewSCache() first and then obtain the cell and volume
information.  Then perform a second lookup for the FID while
holding cm_scacheLock write-locked.  If we lost the race or
there was an error obtaining the cell and volume info, put
the new cm_scache_t back onto the end of the LRU queue.

Change-Id: Idb94275d23c160ee0a2dc8fdcfd0f09506ecb2d3
Reviewed-on: http://gerrit.openafs.org/6003
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: avoid null ptr in RDR_RequestFileExtentsAsync
Jeffrey Altman [Sat, 12 Nov 2011 22:24:12 +0000]
Windows: avoid null ptr in RDR_RequestFileExtentsAsync

If the cm_scache_t cannot be obtained, do not dereference it
while returning an error to the redirector.

Change-Id: Ia8aaa33ca4ab410dc1b0100ea5668d5660d90b75
Reviewed-on: http://gerrit.openafs.org/6002
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Track active RPCs per scache_t
Jeffrey Altman [Sat, 12 Nov 2011 18:45:08 +0000]
Windows: Track active RPCs per scache_t

It has been noticed that multiple RPCs can be active on
a cm_scache_t object at the same time.  This is especially
true of directory objects with the redirector.  Track the
number of active RPCs and use that number in cm_MergeStatus
when deciding whether or not to discard the cached data for
the object.

Change-Id: If291bb4c0e48d0ec087c3a7c2640e4598e7fd419
Reviewed-on: http://gerrit.openafs.org/6001
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: fix locking hierarchy in service
Jeffrey Altman [Sat, 12 Nov 2011 18:41:30 +0000]
Windows: fix locking hierarchy in service

The smb username lock and the daemon global lock can be requested
while the scache dirlock is held if there are no free buffers
and the service is forced to claw back extents from the redirector.
Adjust the locking hierarchy accordingly.

Change-Id: I85387a16ca580d678af45f3931aa5e81fe0a0f2c
Reviewed-on: http://gerrit.openafs.org/6000
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoafs: Do not use separate array for srvAddrs
Andrew Deason [Wed, 2 Nov 2011 21:55:49 +0000]
afs: Do not use separate array for srvAddrs

The array of srvAddr structs we use in afs_LoopServers have indices
unrelated to the indices of conns, rxconns, etc. Several places were
assuming that addr[i] corresponded to conn[i], which is not
necessarily true. So instead, do not use the separate addr array
(except when populating the conn and rxconn arrays), and just get the
srvAddr structure by going through the relevant conn[i].

Change-Id: Ib60126811f51943bfc81ab7c48d7f247f00f1cad
Reviewed-on: http://gerrit.openafs.org/5790
Reviewed-by: Marc Dionne <marc.c.dionne@gmail.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agorx: Turn the rxevent_Cancel macro into a function
Simon Wilkinson [Sat, 22 Oct 2011 15:37:04 +0000]
rx: Turn the rxevent_Cancel macro into a function

Turn rxevent_Cancel into a function rather than a macro which modifies
its argument as a side effect. rxevent_Cancel now checks whether the
event being cancelled is already NULL, as well as NULLifying the event
when it is actually cancelled.

Update all of the callers to reflect this new API, and so they no
longer do unecessary work.

Change-Id: I75b68f1c8f1a3023edd6113600663fe2b60d6097
Reviewed-on: http://gerrit.openafs.org/5840
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agorx: New signature for rx event functions
Simon Wilkinson [Sat, 22 Oct 2011 15:22:36 +0000]
rx: New signature for rx event functions

For a while now, we've had both new and old-style rx event callback
functions. Modify all of our event handlers, and the functions that
install them, to use only new style functions, and get rid of the
old-style function prototypes.

Change-Id: Ic7c568df9d191edb082fb41fb7705c54ca93cf48
Reviewed-on: http://gerrit.openafs.org/5839
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoopr: Add a red/black tree implementation
Simon Wilkinson [Sat, 22 Oct 2011 10:22:51 +0000]
opr: Add a red/black tree implementation

Add an implementation of red/black trees to our runtime library.

This is originally derived from the FreeBSD macro-based rbtree
implementation, but is heavily reworked to not use macros, to improve
legibility, and to favour speed over structure compactness.

A test suite is provided in tests/opr/

Change-Id: I123209d3f89b5f8c1b85d1e5cd7d1d650ccc68ed
Reviewed-on: http://gerrit.openafs.org/5838
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agorx: Add a helper function for delayed acks
Simon Wilkinson [Sat, 22 Oct 2011 10:10:53 +0000]
rx: Add a helper function for delayed acks

The code to schedule a new delayed ack event is distributed throughout
the RX code. Consolidate this into a single helper function.

Change-Id: If54e36b5648f8caffe64cc2203dc0041fd06b8b3
Reviewed-on: http://gerrit.openafs.org/5837
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoopr: Add opr_containerof
Simon Wilkinson [Sat, 22 Oct 2011 08:45:10 +0000]
opr: Add opr_containerof

Add the opr_containerof macro, which can be used to find the base
address of a structure which contains a member whose location is known.

This formulation is heavily used throughout OpenAFS to determine the
base address of structures containing queue pointers - this provides
a central definition, rather than coding it from scratch each time.

Change-Id: I2a32a214252ad304238f740ad92579e5bb7287be
Reviewed-on: http://gerrit.openafs.org/5836
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoWindows: Add Vista/Win7 Firewall Configuration
Jeffrey Altman [Sat, 5 Nov 2011 08:10:42 +0000]
Windows: Add Vista/Win7 Firewall Configuration

Make use of the INetFwPolicy2 COM interface to configure
the Vista/Win7 firewall for all network profile types.

Change-Id: Id96d98f6e166f3529a117997f5a3c35b0051d1a4
Reviewed-on: http://gerrit.openafs.org/5812
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Enforce Share Access
Jeffrey Altman [Wed, 5 Oct 2011 07:36:48 +0000]
Windows: Enforce Share Access

Use file server locks to enforce file share access modes
via the afs redirector interface.  The approach taken
integrates share mode enforcement with the file server
lock tracking code in the service.  The share mode
enforcement mimics that of the SMB Server interface.

This patchset includes two functional changes to
the previous locking and share mode processing:

 1. The cm_scache_t fsLockCount field is used to
    determine if the desired lock can be granted
    by the file server.  If not, the RXAFS_SetLock()
    request is skipped and the request is failed
    locally.

 2. cm_CheckNTOpen() now accepts the desired and
    and share access modes.  The share access mode
    is used to determine if a test lock should be
    obtained at all.  If the share mode is FILE_SHARE_WRITE
    then no lock is requested.  This change permits
    Microsoft Office applications to offer the user
    the ability to open the file in read-only mode
    and notify the user when the document can be
    opened in read-write mode.

Developed with Peter Scott <pscott@kerneldrivers.com>

FIXES 130239

Change-Id: If9b4beb74586296d4feae52dd06c03f0b8b595cd
Reviewed-on: http://gerrit.openafs.org/5823
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoSOLARIS: Do not build x86 kernel module on 5.11
Andrew Deason [Thu, 10 Nov 2011 21:18:41 +0000]
SOLARIS: Do not build x86 kernel module on 5.11

Oracle Solaris 11 no longer supports x86 (amd64 is required). If we
try to build the x86 module, /usr/include/sys/kobj.h complains that
the ISA is unsupported, and refuses to go on. So, just remove
MODLOAD32 from the libafs directories to build on sunx86_511.

Change-Id: Ic18936d1a0f53ed290d885617d313347aa6ce87a
Reviewed-on: http://gerrit.openafs.org/5835
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agonamei: Remove extraneous rmdir
Andrew Deason [Thu, 10 Nov 2011 17:58:12 +0000]
namei: Remove extraneous rmdir

We just unlinked the file, so we know we won't be able to rmdir() the
same thing. Give a path one level higher to
namei_RemoveDataDirectories, so we start rmdir()ing at the parent dir.

Change-Id: Ifa54d1cc07ed2d277416d09eabc45aa1e1c3803a
Reviewed-on: http://gerrit.openafs.org/5833
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agovol: Remove O_EXCL|O_TRUNC combinations
Andrew Deason [Thu, 10 Nov 2011 17:05:28 +0000]
vol: Remove O_EXCL|O_TRUNC combinations

A few places were specifying both O_EXCL and O_TRUNC to open().
O_TRUNC does not make any sense with O_EXCL, and doesn't do anything,
so remove O_TRUNC from these instances to make the code more clear.

Change-Id: Ie8d9d7b9912a96683ef34f762607e75468b5ac78
Reviewed-on: http://gerrit.openafs.org/5832
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoWindows: FSCTL_SET_REPARSE_POINT not yet implemented
Jeffrey Altman [Thu, 10 Nov 2011 03:52:37 +0000]
Windows: FSCTL_SET_REPARSE_POINT not yet implemented

Since FSCTL_SET_REPARSE_POINT is not yet implemented
return STATUS_INVALID_PARAMETER to all requests that
do not fail validity tests.

Change-Id: I53d4b4fc9d957daa70b16d37a529778ed8bbfa5e
Reviewed-on: http://gerrit.openafs.org/5829
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: FSCTL_SET_REPARSE_POINT error
Jeffrey Altman [Thu, 10 Nov 2011 03:47:55 +0000]
Windows: FSCTL_SET_REPARSE_POINT error

According to MS_FSCC 2.3.54 if the input buffer length is less than the size
of a REPARSE_DATA_BUFFER structure, or the input buffer length is greater
than 16,384, or a REPARSE_DATA_BUFFER structure has been specified for a
third party reparse tag, or the GUID specified for a third party reparse tag
does not match the GUID known by the operating system for this reparse
point, or the reparse tag is 0 or 1, then the return status shall be
STATUS_IO_REPARSE_DATA_INVALID.

Change-Id: I0072902afc8bc354af8f9b84b1021b37191dc23a
Reviewed-on: http://gerrit.openafs.org/5828
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: FSCTL_IS_PATHNAME_VALID return success
Jeffrey Altman [Thu, 10 Nov 2011 03:45:07 +0000]
Windows: FSCTL_IS_PATHNAME_VALID return success

Windows NT, Windows 2000, Windows XP, Windows Server 2003, Windows Vista,
Windows Server 2008, Windows 7, and Windows Server 2008 R2 support the
FSCTL_IS_PATHNAME_VALID Request (section 2.3.21) and return STATUS_SUCCESS
whenever this request is invoked.  We will do the same.

Change-Id: I432c8a41e1102648faaa3d8c0f3b8c36ea89bfc8
Reviewed-on: http://gerrit.openafs.org/5827
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: these fsctl cmds are not implemented
Jeffrey Altman [Thu, 10 Nov 2011 03:42:54 +0000]
Windows: these fsctl cmds are not implemented

Return STATUS_NOT_IMPLEMENTED since the following
FSCTL_ operations are not:

FSCTL_LOCK_VOLUME
FSCTL_UNLOCK_VOLUME
FSCTL_DISMOUNT_VOLUME
FSCTL_MARK_VOLUME_DIRTY
FSCTL_IS_VOLUME_DIRTY
FSCTL_IS_VOLUME_MOUNTED

Change-Id: Idfe26a4b71538defd1919be575d62b32dd415a06
Reviewed-on: http://gerrit.openafs.org/5826
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Additional trace logging
Jeffrey Altman [Thu, 10 Nov 2011 03:33:11 +0000]
Windows: Additional trace logging

Add additional trace logging to the redirector to assist
with debugging reparse point processing.

Change-Id: I89d7a26d7d10ba5fff001d91f5e67baa224f4179
Reviewed-on: http://gerrit.openafs.org/5825
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: service must set reparse point attribute
Jeffrey Altman [Thu, 10 Nov 2011 01:05:05 +0000]
Windows: service must set reparse point attribute

When populating the directory entry information for the
redirector the service must set the reparse point attribute.

Change-Id: I26db0b822f850f0a19606eeed3c29e0e72562e2f
Reviewed-on: http://gerrit.openafs.org/5824
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Correctly increment PIOCtl DE
Peter Scott [Thu, 10 Nov 2011 20:34:53 +0000]
Windows: Correctly increment PIOCtl DE

When performing a directory enumeraiton, correctly increment ref count on
the PIOCtl DE structures

Change-Id: I44de6ab2d804378723e31887089aca4890d15fa6
Reviewed-on: http://gerrit.openafs.org/5834
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: FileNetworkPhysicalNameInfo implementation
Peter Scott [Thu, 10 Nov 2011 16:06:53 +0000]
Windows: FileNetworkPhysicalNameInfo implementation

Handle this File information query

Change-Id: Id16c22396cbb7e22b8958bc0438e58da048f4f70
Reviewed-on: http://gerrit.openafs.org/5830
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: improve store data parallelism
Jeffrey Altman [Mon, 31 Oct 2011 03:52:00 +0000]
Windows: improve store data parallelism

The file server will set the rx call status bit (0x1)
when the rpc is in process and all of the locks are held.
At this point it is not possible for another store data rpc
to begin on the vnode prior to the completion of the current
rpc.  Once this status bit is detected as set, the exclusive
store data synchronization on the cm_scache_t can be dropped.

This permits the next store data rpc to perform its biod
construction.

Change-Id: Ic856769650781b4f5f4ab4ac86df4946496bd655
Reviewed-on: http://gerrit.openafs.org/5741
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agovolser: Preserve needsSalvaged during restore
Andrew Deason [Wed, 9 Nov 2011 23:04:09 +0000]
volser: Preserve needsSalvaged during restore

Some of the routines during a volume restore may set needsSalvaged, if
an inconsistency is detected while writing the given volume data.
However, after the data is read, we set the volume header information
to what was found in the dump stream, ignoring any needsSalvaged that
may have been set.

To ensure that inconsistent volumes in this situation actually get
demand-salvaged (for DAFS) or offlined (non-DAFS), keep the value of
needsSalvaged in the header, if it was set.

Change-Id: I575d14d84120be0fbbeb185ed2726f1285e6f2ce
Reviewed-on: http://gerrit.openafs.org/5822
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoviced: avoid bogus handle in rename
Derrick Brashear [Wed, 9 Nov 2011 15:34:10 +0000]
viced: avoid bogus handle in rename

because fileptr's handle can be reset during CopyOnWrite
we need to SetDirHandle after that call

FIXES 130215

Change-Id: I8578d30da42bdd9be2c552cdac4d2c526c22ee45
Reviewed-on: http://gerrit.openafs.org/5818
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoregen: Fail on failures
Andrew Deason [Tue, 8 Nov 2011 18:52:50 +0000]
regen: Fail on failures

If something fails, don't ignore the error.

Change-Id: I3ae90009f0a0f61f269a05b39e9bfe478ccf256f
Reviewed-on: http://gerrit.openafs.org/5817
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoAdd "pretty" build option
Andrew Deason [Wed, 13 Apr 2011 18:15:57 +0000]
Add "pretty" build option

Add the capability to do a "pretty" build, where we output something
like "  CC  /path/to/foo.o" to build foo.o, instead of the entire
compiler invocation, similarly to how the Linux kernel build appears.
Add the "pretty" building for CC and LD rules.

This also prints out some helpful information when a command fails,
which can sometimes otherwise be annoying to figure out post-mortem.

To enable the pretty building, make with V=0. To output everything
that is actually run with V=0, make with 'V=0 Q=' .

Note that this does not work with all makes, since not all makes will
propagate command-line-specified variables to sub-makes without -e.
Non-working makes include /usr/ccs/bin/make on HP-UX and Solaris.
However, GNU make will work, as will /usr/xpg4/bin/make on Solaris.

Change-Id: Idce0afffe7d5be88b0743ec3f926a52efb1a6a74
Reviewed-on: http://gerrit.openafs.org/4486
Reviewed-by: Russ Allbery <rra@stanford.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoSpecify pattern rules in addition to suffix rules
Andrew Deason [Tue, 8 Nov 2011 18:29:39 +0000]
Specify pattern rules in addition to suffix rules

A few makefiles specify an old-style suffix rule, such as:

  .c.o:
          $(AFS_CCRULE) $<

Not all makes seem to interpret these rules correctly (such as Solaris
/usr/xpg4/bin/make). Since it is easy to do so, specify pattern-based
rules along with these, like so:

  %.o: %.c
          $(AFS_CCRULE) $<

Change-Id: I052f1156d1a7e29beedb0fb59390073c2521459e
Reviewed-on: http://gerrit.openafs.org/5819
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoAdd setenv/unsetenv to roken
Andrew Deason [Thu, 3 Nov 2011 18:40:37 +0000]
Add setenv/unsetenv to roken

Add the replacement setenv and unsetenv functions to roken, for use on
(at least) HP-UX and older Solaris.

Change-Id: Id05137b6e6c88eb6648bd6a6e649f9ef311e32a4
Reviewed-on: http://gerrit.openafs.org/5801
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agodafs: avoid null deref getting volume header
Derrick Brashear [Sun, 6 Nov 2011 21:28:27 +0000]
dafs: avoid null deref getting volume header

we don't assign hd before dereferencing. stop dereferencing
and just use the queue cursor.

Change-Id: I023fd959c5d49575dbdf89fd4dab77341c5c52d0
Reviewed-on: http://gerrit.openafs.org/5814
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agosalvager: Implement AskDAFS via SYNC flags
Andrew Deason [Thu, 3 Nov 2011 18:17:33 +0000]
salvager: Implement AskDAFS via SYNC flags

Instead of probing the DAFS-ness of the fileserver by probing which
FSSYNC opcodes it supports, detect DAFS-ness by looking at the SYNC
response header flags, which explicitly state whether or not the
endpoint is DAFS. This avoids unnecessary "protocol mismatch" log
messages when the endpoint is not DAFS.

Change-Id: Ie05a587951d6d5f69ae03cf3749f8c53e1eb6b62
Reviewed-on: http://gerrit.openafs.org/5800
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoredhat: make rpms build on pre-f15 again
Derrick Brashear [Sat, 5 Nov 2011 15:24:43 +0000]
redhat: make rpms build on pre-f15 again

we don't have systemd everywhere. don't assume it

Change-Id: I4038bc1e1aff804e685d1987e368f2be1af35b05
Reviewed-on: http://gerrit.openafs.org/5813
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Tested-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoukernel: handle pioctl errors properly in ktc
Derrick Brashear [Fri, 4 Nov 2011 15:43:01 +0000]
ukernel: handle pioctl errors properly in ktc

the straight return from call_syscall isn't what we want. munge so
e.g. EDOM handling for ktc_GetToken does the right thing.

Change-Id: I3fbba799e0156bad29b27c74a1c7709ee8c50c34
Reviewed-on: http://gerrit.openafs.org/5807
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

12 years agolibafsauthent: Remove obsolete HP-UX workaround
Andrew Deason [Fri, 4 Nov 2011 21:12:03 +0000]
libafsauthent: Remove obsolete HP-UX workaround

This workaround is no longer relevant. It is also error-prone and
there are far better ways to achieve a similar result, so get rid of
it.

Change-Id: If77f0cd95c8c608913d0c8717729a05c1ad67df9
Reviewed-on: http://gerrit.openafs.org/5811
Reviewed-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agovolser: Remove debugging log messages
Andrew Deason [Fri, 4 Nov 2011 22:19:28 +0000]
volser: Remove debugging log messages

While the -log option to volserver is supposed to print additional log
information, it shouldn't spam the log with useless data. Remove some
of the log lines that are really more "debug" information, so we log
the same amount of information as in the 1.4 series.

Change-Id: I1fd93344a7ebe11c6d5ad507dad87babe517785a
Reviewed-on: http://gerrit.openafs.org/5810
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

12 years agoUnix CM: Fix dir buffer leak in afs_readdir
Simon Wilkinson [Thu, 3 Nov 2011 10:10:23 +0000]
Unix CM: Fix dir buffer leak in afs_readdir

Resolve a buffer leak in afs_readdir that was visible on all non-Linux
platforms (Linux has an independent readdir implementation)

Change-Id: Ia5106f0e5c57430d3483b6add5b1629ff3fbc7b3
Reviewed-on: http://gerrit.openafs.org/5794
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoDAFS: Deal with exclusive-state volume headers
Andrew Deason [Fri, 4 Nov 2011 17:42:33 +0000]
DAFS: Deal with exclusive-state volume headers

GetVolumeHeader assumes that headers on the LRU are not associated
with a volume in an exclusive state. This is known to not be true for
some cases when salvage requests are received over FSSYNC, and may be
true in other scenarios. It's easy to just skip such headers, so skip
them.

Change-Id: I343d2e4f7af1c753641767be322420f38873c217
Reviewed-on: http://gerrit.openafs.org/5808
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoWindows: NPCancelConnection set correct length
Jeffrey Altman [Fri, 4 Nov 2011 13:34:53 +0000]
Windows: NPCancelConnection set correct length

The RemoteNameLength passed in the IOCTL_AFS_CANCEL_CONNECTION call
must not include the trailing NUL.  NPGetConnection() returns the
size of the buffer used which does include the trailing NUL.

Change-Id: Ic5eae51aade91db4a799bea83d898af6fbc37504
Reviewed-on: http://gerrit.openafs.org/5806
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: do not leak resource in AFSQueryDirectory
Jeffrey Altman [Fri, 4 Nov 2011 12:40:03 +0000]
Windows: do not leak resource in AFSQueryDirectory

Track whether or not the pFcb->NPFcb->Resource is held so
it can be released in all error paths.

Change-Id: I8c8bfb912329e8c11ac7857086412d85aa64fea6
Reviewed-on: http://gerrit.openafs.org/5804
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: KFW_AFS should use API: ccache
Jeffrey Altman [Thu, 3 Nov 2011 20:39:18 +0000]
Windows: KFW_AFS should use API: ccache

During the Heimdal transition that default ccache type
was changed to FILE.  Restore the use of API: ccaches.

Change-Id: Idd8dfb46fc9167d8c1eb44466b76906a152eef9d
Reviewed-on: http://gerrit.openafs.org/5802
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Simplify KFW_AFS_klog
Jeffrey Altman [Thu, 3 Nov 2011 18:14:52 +0000]
Windows: Simplify KFW_AFS_klog

Reduce the complexity of KFW_AFS_klog.  Introduce
KFW_AFS_continue_aklog_processing_after_krb5_error() and
combine the input realm and realm_of_cell cases making
use of the RealmName variable.

Change-Id: I363544548652bc892f50dce00865e13e7d42de7f
Reviewed-on: http://gerrit.openafs.org/5799
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Failed to release correct lock
Peter Scott [Fri, 4 Nov 2011 13:31:57 +0000]
Windows: Failed to release correct lock

For cross-directory renames, the correct parent lock was not being tracked

Change-Id: Ib50aad63f56cde638ff3bf1595d4495338c15f91
Reviewed-on: http://gerrit.openafs.org/5805
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agodoc: limitations of addsite on different partitions
Ken Dreyer [Mon, 31 Oct 2011 14:27:16 +0000]
doc: limitations of addsite on different partitions

A user on the openafs-info mailing list noted that the Admin Guide is
unclear about creating read-only replicas on different partitions on
the same fileserver. Clarify the rules here.

Change-Id: I8229b4fba36c128772bb8198e6b8310a51206c03
Reviewed-on: http://gerrit.openafs.org/5745
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoImport of code from heimdal
Heimdal Developers [Thu, 3 Nov 2011 17:37:36 +0000]
Import of code from heimdal

This commit updates the code imported from heimdal to
ee7340860a22f81fb869cc431efc1fd4e5c77d34 (switch-from-svn-to-git-2542-gee73408)

Upstream changes are:

Jeffrey Altman (2):
      Windows: fallback to PROV_RNG if no PROV_RSA_FULL
      roken: posix errnos for windows

Love Hornquist Astrand (3):
      drop __restrict to please old compilers
      add krb5_is_enctype_weak
      Don't export tests from library, reported in bug from Tom Payeire

New files are:
roken/setenv.c
roken/unsetenv.c

Change-Id: I7e3b3db2a58eaaae9de91431565176921d79af3b
Reviewed-on: http://gerrit.openafs.org/5798
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: Derrick Brashear <shadow@dementix.org>

12 years agoSolaris: Specify ARCHFLAGS in CFLAGS
Andrew Deason [Wed, 2 Nov 2011 16:35:42 +0000]
Solaris: Specify ARCHFLAGS in CFLAGS

Various autoconf tests which use the C compiler may yield different
results depending on whether or not we are compiling for x86 or amd64
on Solaris (different libraries are available, structures may be
different, et al). So, set CFLAGS depending on which arch we are
targeting, so the autoconf results are more consistent with the actual
compilation during the build.

Change-Id: I99ddefaabc3bb2e80abe698366b348238d51408d
Reviewed-on: http://gerrit.openafs.org/5786
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: Derrick Brashear <shadow@dementix.org>

12 years agoDo OPENAFS_OSCONF before compiler autoconf tests
Andrew Deason [Wed, 2 Nov 2011 16:32:56 +0000]
Do OPENAFS_OSCONF before compiler autoconf tests

OPENAFS_OSCONF can set the C compiler we use, as well as changing
various compiler flags. These changes can alter autoconf tests, so
allow OPENAFS_OSCONF to change these before various autoconf tests are
performed which require the C compiler.

Change-Id: I8da7d10b227f230d1467c77845c0dbd4b48fa966
Reviewed-on: http://gerrit.openafs.org/5785
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: Derrick Brashear <shadow@dementix.org>

12 years agoRemove -settime/RXAFS_GetTime client support
Andrew Deason [Wed, 2 Nov 2011 15:43:54 +0000]
Remove -settime/RXAFS_GetTime client support

Remove the -settime option from afsd, and any code for making
RXAFS_GetTime calls in libafs. Server probes have been replaced by
calls to RXAFS_GetCapabilities, and the actual functionality of
synchronizing the system clock has been superseded by other systems
like NTP. Issue a warning for all code paths that try to enable
-settime support.

Historical note: the code that this commit is removing contains bugs.
Do not simply revert this commit to turn on -settime support again.

Change-Id: Id291f5f88b1ad84594706f2a1a02a933dddd0cb9
Reviewed-on: http://gerrit.openafs.org/5787
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoopr: queue swap
Michael Meffie [Thu, 18 Aug 2011 21:04:14 +0000]
opr: queue swap

Add inline function to pivot two queues.
Implementation by Simon Wilkinson.

Change-Id: I704a1ff3e0d6314e2bfe47c870226cb6ffd44b1b
Reviewed-on: http://gerrit.openafs.org/5742
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoexternal: trigger git commit-msg hooks on import
Andrew Deason [Thu, 3 Nov 2011 17:33:55 +0000]
external: trigger git commit-msg hooks on import

When we import commits, the new commit does not have a Change-Id in
the commit message. Usually a git commit-msg hook will be installed to
automatically insert a Change-Id into the commit message if one does
not already exist, so trigger the hook by performing a no-op 'git
commit --amend'.

Change-Id: Ie5e83c529b83c9f3d269df6742a59e965dbc6407
Reviewed-on: http://gerrit.openafs.org/5797
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoexternal: commit imports with --no-verify
Andrew Deason [Thu, 3 Nov 2011 17:27:22 +0000]
external: commit imports with --no-verify

Currently, importing external commits with import-external-git.pl may
fail if the current repository checks for whitespace errors, and the
external commits contain whitespace errors. So run the commit with
--no-verify, so we can make the commit before fixing up the whitespace
errors immediately afterwards.

Change-Id: I8c9c39550e118956aa847e0ec5c5b1181f42e6cb
Reviewed-on: http://gerrit.openafs.org/5796
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoImport setenv.c and unsetenv.c from roken
Andrew Deason [Thu, 3 Nov 2011 17:17:07 +0000]
Import setenv.c and unsetenv.c from roken

Import the roken implementation of setenv and unsetenv, which are
required on HP-UX.

Change-Id: Ia91f407d696f3add27796bf9e2f5998717f4c825
Reviewed-on: http://gerrit.openafs.org/5795
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoWindows: fix deadlock in symlink Attrib retrieval
Peter Scott [Wed, 2 Nov 2011 23:29:00 +0000]
Windows: fix deadlock in symlink Attrib retrieval

Commit df22620f66f5ce92776177d4d800fc7f4ae4ae99 introduced a
deadlock when retrieving file attributes for symlink objects.
To correct the deadlock, do not hold the Fcb locks during the
AFSRetrieveFileAttributes() call.

Change-Id: I8d3d2c5f54d4e5c97f690fd1fd6db62128317cf2
Reviewed-on: http://gerrit.openafs.org/5792
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: always set reparse point attrib for symlink
Jeffrey Altman [Wed, 2 Nov 2011 23:27:42 +0000]
Windows: always set reparse point attrib for symlink

Make sure that we always set the reparse point attribute
for symlinks in directory enumerations and attribute queries.

Change-Id: Ie7520cef64793e3385f229934189fc56a3edb584
Reviewed-on: http://gerrit.openafs.org/5793
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: remember when a reparse point is opened
Peter Scott [Wed, 2 Nov 2011 23:25:36 +0000]
Windows: remember when a reparse point is opened

If the mount point or symlink is opened as a reparse point
we must remember that in the Ccb so that later reparse point
processing can be implemented properly.  For now remember
with the CCB_FLAG_MASK_OPENED_REPARSE_POINT flag.

Change-Id: I32997a85701a95a5be1402cdcd3335a938395760
Reviewed-on: http://gerrit.openafs.org/5791
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Mount points are always directories
Jeffrey Altman [Wed, 2 Nov 2011 14:35:14 +0000]
Windows: Mount points are always directories

Set the directory file attribute for all mount points
since a mount point target is always represented as
a directory.

Change-Id: I57a8e44d1382093311e8263c18d55f22f2f745ea
Reviewed-on: http://gerrit.openafs.org/5784
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Peter Scott <pscott.kd@gmail.com>
Tested-by: Peter Scott <pscott.kd@gmail.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Retrieve file attributes on symlinks
Peter Scott [Wed, 2 Nov 2011 14:23:48 +0000]
Windows: Retrieve file attributes on symlinks

When a component is a symlink, correctly retrieve file
attributes during a query file information request.

FIXES 130283

Change-Id: I0e9a576ca57acf9c65a5dc0eac8c9d65ddf6ab6f
Reviewed-on: http://gerrit.openafs.org/5782
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: add AFSRetrieveParentPath()
Peter Scott [Wed, 2 Nov 2011 14:18:09 +0000]
Windows: add AFSRetrieveParentPath()

Change-Id: Ic3da7f09f12f0e089b9561a542b2cf04ff61c98d
Reviewed-on: http://gerrit.openafs.org/5783
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agokdump-build: don't install when it hasn't been built for *bsd*
Jonathan A. Kollasch [Tue, 11 Oct 2011 17:56:08 +0000]
kdump-build: don't install when it hasn't been built for *bsd*

Change-Id: Iac9df9eb199433127941590d24633dfe9bbc6815
Reviewed-on: http://gerrit.openafs.org/5596
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: Derrick Brashear <shadow@dementix.org>

12 years agoklog.krb5: enforce DES for rxkad
Jeffrey Altman [Fri, 14 Oct 2011 13:10:19 +0000]
klog.krb5: enforce DES for rxkad

0. Always request a TGT regardless of the state of
   writeTicketFile.

1. request des-cbc-crc when requesting a ticket for an
   rxkad service principal

2. check the returned key length to ensure that it matches
   the permitted length of an rxkad key.  If not, generate
   an error instead of overwriting memory and continuing.

FIXES 130278

Change-Id: Ib7d27acc60c1b38dab4e2a56f83643477afb9721
Reviewed-on: http://gerrit.openafs.org/5619
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementix.org>

12 years agoWindows: DE Reference count added during create
Peter Scott [Tue, 1 Nov 2011 14:55:37 +0000]
Windows: DE Reference count added during create

A reference count is added under lock to a newly created DE to
ensure it is not removed through deletion while in flight.

Change-Id: If0955c4a6c4cf197a4e071f9c6022875aabb70bb
Reviewed-on: http://gerrit.openafs.org/5775
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: change AFSProcessUserFsRequest default
Peter Scott [Mon, 31 Oct 2011 22:10:07 +0000]
Windows: change AFSProcessUserFsRequest default

Default the return code for AFSProcessUserFsRequest() to
STATUS_INVALID_DEVICE_REQUEST instead of STATUS_INVALID_PARAMETER.

Change-Id: Ie7fb260a19617635c11c92e2daf5947cef73c9be
Reviewed-on: http://gerrit.openafs.org/5774
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: correct ordering of reparse point tests
Peter Scott [Mon, 31 Oct 2011 22:07:23 +0000]
Windows: correct ordering of reparse point tests

Test for whether an object is a reparse point before testing
whether the provided buffer is large enough to hold the result
if it is.

FSCTL_GET_REPARSE_POINT
FSCTL_SET_REPARSE_POINT
FSCTL_DELETE_REPARSE_POINT

Change-Id: If6c1b9b6e5853d7759f169943310321d408190e0
Reviewed-on: http://gerrit.openafs.org/5748
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: log FSCTL_CSC_INTERNAL requests
Peter Scott [Mon, 31 Oct 2011 22:05:31 +0000]
Windows: log FSCTL_CSC_INTERNAL requests

FSCTL_CSC_INTERNAL requests are not supported and will
return STATUS_INVALID_DEVICE_REQUEST.  However, log them
for easier debugging.

FSCTL_CSC_INTERNAL is defined in ntifs.h only for
Vista and above.  Since afsredir is built for XP
and above its value must be conditionally defined
by us.

Change-Id: I39cf1f9d068d28ab6c9267c302d49feece6af700
Reviewed-on: http://gerrit.openafs.org/5773
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: add braces to case statements
Peter Scott [Mon, 31 Oct 2011 21:59:51 +0000]
Windows: add braces to case statements

A number of case statements did not have braces protecting
the block.  Add them.

Change-Id: I313462ca0c7490931e7c994ec45e39be071e782b
Reviewed-on: http://gerrit.openafs.org/5772
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Directory Entry Processing
Peter Scott [Sat, 29 Oct 2011 17:55:46 +0000]
Windows: Directory Entry Processing

Memory corruption was detected due to improper handling
of directory entries and the short name b-tree during
directory revalidation and tear down.  The problem
resulted in a BSOD most frequently when roaming profiles
were written back to the file server or when multiple
clients were actively modifying the contents of a directory
simultaneously.

This patchset makes a number of changes:

 . rename processing no longer handles collisions locally.
   the file server replaces a target atomicly when there
   is a collision.

 . directory validation is no longer delayed until
   a handle is closed

 . data version numbers are checked for implied
   invalidation

Change-Id: Ib4b281bfb5da4b5a5ce735e85d85c50e15fbcde1
Reviewed-on: http://gerrit.openafs.org/5736
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: additional trace logging for afsredirlib
Peter Scott [Sat, 29 Oct 2011 17:29:55 +0000]
Windows: additional trace logging for afsredirlib

A large number of addition trace log entries were added
to assist in diagnosing problems in the dir entry processing.

Change-Id: I85cab4d66680eb5b9c00843c49c33a81acb18bc2
Reviewed-on: http://gerrit.openafs.org/5739
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>

12 years agoWindows: Reimplement AFSGenerateCRC()
Peter Scott [Sat, 29 Oct 2011 15:34:07 +0000]
Windows: Reimplement AFSGenerateCRC()

Replace the home grown CRC generation with a call to
RtlHashUnicodeString() which is present on Windows XP
and above.

Change-Id: Id98a1223e0aad54b3c43a16653ab888ac883639f
Reviewed-on: http://gerrit.openafs.org/5738
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>