openafs.git
8 years agoWindows: Switch to Interlocked ops for RDR Set/Clear
Jeffrey Altman [Thu, 4 Apr 2013 03:33:40 +0000]
Windows: Switch to Interlocked ops for RDR Set/Clear

Switch to using interlocked operations for the SetFlag and ClearFlag
macros.

Change-Id: I2b071ae49f69d557c30d1280fb7877dde7f76f40
Reviewed-on: http://gerrit.openafs.org/9722
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: AFSDeleteDirEntry set input to NULL
Jeffrey Altman [Tue, 2 Apr 2013 18:13:57 +0000]
Windows: AFSDeleteDirEntry set input to NULL

AFSDeleteDirEntry() frees the memory allocated to the DirectoryCB.
To ensure that an invalid memory pointer is not accidentally used
by the caller after the memory is freed, use
InterlockedCompareExchangePointer() to set the input parameter to
NULL prior to destroying the DirectoryCB.

Change-Id: I2e92d4277d1f9baee164bfb941821aa11a1ad738
Reviewed-on: http://gerrit.openafs.org/9721
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: AFSPrimaryVolumeWorkerThread reorg
Jeffrey Altman [Tue, 2 Apr 2013 04:46:27 +0000]
Windows: AFSPrimaryVolumeWorkerThread reorg

Periodically there is a lost race which results in a valid DirectoryCB
with a non-NULL ObjectInformation pointer that refers to freed memory.
This major reorganization simplifies the logic and attempts to close
potential loopholes.

First, the AFSExamineDirectory() function is removed and replaced by
a call to AFSDeleteDirEntry().  The AFSExamineDirectory() function
examined all of the children AFSObjectInfoCB objects which in turn
duplicated much of the logic of AFSExamineObjInfo at the cost of
increased complexity due to the additional layer of locked objects.
Once the AFSDirectoryCB is removed a subsequent pass of the worker
thread will free the AFSObjectInfoCBs.

Second, the AFS_OBJECT_REFERENCE_DIRENTRY category had been used for
both DirectoryCB references and the Pioctl references.  A new
AFS_OBJECT_REFERENCE_PIOCTL category has been created to improve the
ability to track the allocations and releases.

Third, the AFSPrimaryVolumeWorker thread now attempts to hold onto the
VolumeCB TreeLock exclusively.  Previously the lock was held shared.
However, it is not safe for both the garbage collection and the find
routines to both be shared.  One has to be exclusive.  Although holding
the TreeLock exclusively in the garbage collection processing will result
in the lock being held for extended periods of time, it is more likely
that there will be benefits from parallel access during AFSFindObjectInfo()
calls.

Attempts to obtain most other locks are non-blocking.  If the lock cannot
be obtained, the object must be in use.  Therefore, it should not be
garbage collected.

Change-Id: I75e0302c1737aadfbd9afc0c8a03e28513e785f5
Reviewed-on: http://gerrit.openafs.org/9720
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: FindObjectInfo refcnt under lock
Jeffrey Altman [Tue, 2 Apr 2013 04:40:54 +0000]
Windows: FindObjectInfo refcnt under lock

AFSFindObjectInfo performed the search of Volume object tree protected by
the TreeLock but dropped the lock before incrementing the reference count.
This behavior contributed to a race with the AFSPrimaryVolumeWorkerThread
which has to drop the VolumeCB TreeLock periodically in order to safely
cleanup FCBs.

Change-Id: I0cba4a118e4835edee7702db97846567618e0adf
Reviewed-on: http://gerrit.openafs.org/9719
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: AFSDeleteDirEntry Protect against NULL reference
Jeffrey Altman [Thu, 28 Mar 2013 04:32:37 +0000]
Windows: AFSDeleteDirEntry Protect against NULL reference

Now that AFSDeleteDirEntry can be called with a DirectoryCB
whose ObjectInformation pointer can be NULL, protect against unintentional
dereference.

Change-Id: I6ffd21c35da5581a7ebac6987324e2ff3a8ccd2b
Reviewed-on: http://gerrit.openafs.org/9691
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: AFSDeleteObjectInfo AFS_OBJECT_HELD_IN_SERVICE
Jeffrey Altman [Tue, 26 Mar 2013 13:02:00 +0000]
Windows: AFSDeleteObjectInfo AFS_OBJECT_HELD_IN_SERVICE

Move the check for AFS_OBJECT_HELD_IN_SERVICE until after the TreeLock
is held.

Change-Id: I38d095c83dc5878770a7a31bee08048a777cb3cb
Reviewed-on: http://gerrit.openafs.org/9674
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Add comment to AFSInitDirEntry
Jeffrey Altman [Tue, 26 Mar 2013 13:01:17 +0000]
Windows: Add comment to AFSInitDirEntry

Change-Id: I6e6164b1dd5c7c8a2c51bcb4cba47667bd343e79
Reviewed-on: http://gerrit.openafs.org/9673
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: AFSDeleteDirEntry deleted flag shuffle
Jeffrey Altman [Tue, 26 Mar 2013 12:59:14 +0000]
Windows: AFSDeleteDirEntry deleted flag shuffle

Move the assignment of the deleted flag earlier in AFSDeleteDirEntry()
to avoid potential invalid memory access.

Change-Id: I6d0e1272cc9f2bb491ad291a65b94c53ced9a354
Reviewed-on: http://gerrit.openafs.org/9672
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Protect AFSDeleteObjectInfo calls
Jeffrey Altman [Tue, 26 Mar 2013 12:56:19 +0000]
Windows: Protect AFSDeleteObjectInfo calls

Only permit AFSDeleteObjectInfo() to be called if the reference
count returned by AFSObjectInfoDecrement() is zero.

Change-Id: I6fd65ac41467ec2aa82d4f86f0d57f91595930c1
Reviewed-on: http://gerrit.openafs.org/9671
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: AFSExamineObject() refcnt underflows
Jeffrey Altman [Tue, 26 Mar 2013 12:52:59 +0000]
Windows: AFSExamineObject() refcnt underflows

Now that the reference counting is likely to be correct, do not
garbage collect objects with negative reference counts.  If the
reference counts are wrong the objects will never be destroyed but
that is now a safer choice than freeing memory that might be in use.

Change-Id: Ic8e781c4a775f8bcc66227b6f08f894c2fb85157
Reviewed-on: http://gerrit.openafs.org/9670
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agovos: Restore some VNOVOL error messages
Andrew Deason [Wed, 3 Apr 2013 21:39:07 +0000]
vos: Restore some VNOVOL error messages

Many places in vos/vsprocs have code to delete a volume. Commit
f4e73067cdef990262c69c38ac98761620a63f25 tried to refactor them by
consolidating the common "delete" code into DoVolDelete. However, not
all of the removed code had exactly the same behavior, and some of
these variants were not handled by DoVolDelete.

One such variation is that DoVolDelete always printed an error message
if the target volume did not exist. But for some call sites this
condition is not an error, and prior to the refactoring they did not
print such an error message. Commit
1092cbe34fc8519826b3fa0565505b7bd81bc922 tried to correct this by
suppressing the error message if the target volume does not exist.
However, this means that all DoVolDelete calls do not print such an
error, where some should and some should not print an error. This
means that in some edge cases when we encounter an unexpected VNOVOL
error, we now skip printing the specific error we got and instead go
right to cleanup/recovery/exit. For a few other cases, we used to
print an error and continue (because it is a non-fatal error or a
warning), but now we print nothing when we encounter a VNOVOL error.

Fix this by specifically printing an error for the VNOVOL error for
DoVolDelete call sites that used to print such an error. Do this for
all such sites except ones where we obviously print an error
immediately afterwards anyway.

This is just a quick targeted fix. A future more robust fix should
involve altering DoVolDelete to handle all of the different behaviors
expected by its various callers.

Change-Id: Ia79bce3d2fed4acd62d517064db5b6be77f6e987
Reviewed-on: http://gerrit.openafs.org/9704
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoWindows: FileSystemAttributes = FILE_READ_ONLY_VOLUME
Jeffrey Altman [Sun, 31 Mar 2013 00:16:48 +0000]
Windows: FileSystemAttributes = FILE_READ_ONLY_VOLUME

Instead of testing for Characteristics = FILE_READ_ONLY_DEVICE
which applies to the entire device, only return media protected
errors if the volume FileSystemAttributes include FILE_READ_ONLY_VOLUME.

Change-Id: Ice716083c7f0ecb9e80d0ca9e3e143249293d28e
Reviewed-on: http://gerrit.openafs.org/9699
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: RDR DeviceObject Characteristics
Jeffrey Altman [Sun, 31 Mar 2013 00:15:42 +0000]
Windows: RDR DeviceObject Characteristics

Set both FILE_DEVICE_SECURE_OPEN and FILE_DEVICE_REMOTE when
creating Device Objects for the AFS Redirector.

Change-Id: I336287817d913c612e2fe7cfbb4198900a846b0f
Reviewed-on: http://gerrit.openafs.org/9698
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Move AFSVolume functions to new file
Jeffrey Altman [Sat, 30 Mar 2013 23:58:12 +0000]
Windows: Move AFSVolume functions to new file

In an effort to declutter AFSFcbSupport.cpp, move AFSVolume
functions to a new source file, AFSVolume.cpp.

Change-Id: I663352d7bc4004c41bbab55fdf5bd8e36b373cf9
Reviewed-on: http://gerrit.openafs.org/9697
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Move Name Array functions to new file
Jeffrey Altman [Sat, 30 Mar 2013 23:54:11 +0000]
Windows: Move Name Array functions to new file

In an effort to reduce some of the clutter in AFSGeneric.cpp,
move the Name Array functions to AFSNameArray.cpp.

Change-Id: I97c9c5c67229851cbe937a603a93a2db97d6c12c
Reviewed-on: http://gerrit.openafs.org/9696
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agovolser: Make VolListOneVolume errors consistent
Andrew Deason [Tue, 26 Mar 2013 22:50:31 +0000]
volser: Make VolListOneVolume errors consistent

Currently, VolXListOneVolume errors out with ENODEV if any attachment
error occurs with the specified volume. But VolListOneVolume always
returns success if it can find the indicated volume, and any
attachment errors and such are reported in the 'status' field of the
volume info structure.

These two functions do pretty much the same thing; VolXListOneVolume
just provides more info than VolListOneVolume. So make them behave the
same way, and provide more specific information, whether or not
somebody ran 'vos examine' or 'vos examine -extended'.

The 'vos' binary has always handled errors in the 'status' volume info
structure for both "extended" and non-"extended" queries. This
difference appears to just have been a mistake from OpenAFS 1.0.

Change-Id: Iab16ef6a25487d492fdb046db93973a1e64ca70a
Reviewed-on: http://gerrit.openafs.org/9680
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agovolser: Restore Vol*ListOneVolume error handling
Andrew Deason [Tue, 26 Mar 2013 22:26:23 +0000]
volser: Restore Vol*ListOneVolume error handling

In the 1.4 series, the volserver VolListOneVolume function always
returned success if the specified volume was found in any way, and
ENODEV otherwise. The VolXListOneVolume returned ENODEV if the volume
was not found, or if any error occurred.

DAFS (specifically, commit ed25934c1fe96b143715025b49104e75dce9a361)
changed these so they both behave the same way. That is, they both
return success if the volume was found at all, and ENODEV otherwise.

Commit 53cc2ebaea5e5488d5285f0d13ffa47069ee986f changed both of these
functions so that we always return an error on any attachment error.

These changes mean that a 'vos examine' for a volume with an existing
volume transaction now indicates that a volume is offline/unattached,
but in the 1.4 series, the volume was indicated as "busy".

So, restore the original 1.4 behavior of these functions, so the
volume status is reported as it always was. This effectively reverts
53cc2ebaea5e5488d5285f0d13ffa47069ee986f, and slightly changes the
post-DAFS code to look more like the 1.4 code. This also removes the
'code' variable from VolListOneVolume and adds an explicit comment
about what's going on, to make this a little more clear.

While changing the behavior of VolXListOneVolume to match that of
VolListOneVolume perhaps makes sense, for now just restore the exact
1.4 behavior, and make the function flow look a little more like the
1.4 code did. A future change may make them the same again.

Reported by Andy Malato.

Change-Id: I0e109ad97a1b1bd9b3b25677eb9744a4f7bd5412
Reviewed-on: http://gerrit.openafs.org/9679
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoWindows: AFSDeleteObjectInfo InterlockedCompareExchangePointer
Jeffrey Altman [Thu, 28 Mar 2013 16:06:34 +0000]
Windows: AFSDeleteObjectInfo InterlockedCompareExchangePointer

Correct the third parameter passed to InterlockedCompareExchangePointer
in AFSDeleteObjectInfo() which prevented *ppObjectInfo from being set
to NULL.

Change-Id: I4edc1d69114c02ffff8181b176a5f0bac82f6802
Reviewed-on: http://gerrit.openafs.org/9689
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: additional AFS_SUBSYSTEM_OBJECT_REF_COUNTING
Jeffrey Altman [Thu, 28 Mar 2013 04:28:35 +0000]
Windows: additional AFS_SUBSYSTEM_OBJECT_REF_COUNTING

Add missing cases of reference count value changes which were
not being logged.

Change-Id: I8bc26f31f2725e2c324831bce3da0b68a7fb91d9
Reviewed-on: http://gerrit.openafs.org/9690
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agopackaging: remove largefile-fileserver option from spec file
Arne Wiebalck [Wed, 20 Feb 2013 15:09:06 +0000]
packaging: remove largefile-fileserver option from spec file

Remove the obsolete --enable-largefile-fileservers option from
the RedHat spec file.

Change-Id: I8334c0bfc53125243f78c04a064e23c987a2a4fc
Reviewed-on: http://gerrit.openafs.org/9144
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoWindows: add AFS_OBJECT_REFERENCE_FS_REQ
Jeffrey Altman [Tue, 26 Mar 2013 12:21:49 +0000]
Windows: add AFS_OBJECT_REFERENCE_FS_REQ

Add a new object reference category AFS_OBJECT_REFERENCE_FS_REQ which
is used to avoid overloading AFS_OBJECT_REFERENCE_DIRENTRY.

Change-Id: I428940005dd7b4502329d4171b7307282099af44
Reviewed-on: http://gerrit.openafs.org/9668
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: cache readonly volume size information
Jeffrey Altman [Wed, 27 Mar 2013 04:49:56 +0000]
Windows: cache readonly volume size information

Cache the volume size information for .readonly volumes which can
be reset when the volume callback is broken.  This reduces the number
of RXAFS_GetVolumeStatus RPC calls issues on .readonly volumes.

Change-Id: Ie0e63ca9082a004da71098e28df1315d42d364ff
Reviewed-on: http://gerrit.openafs.org/9681
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: btree enumeration bulk stats
Jeffrey Altman [Tue, 26 Mar 2013 13:08:58 +0000]
Windows: btree enumeration bulk stats

Each of the btree enumeration bulk stat operations include the
directory object in the bulk stat list.  If the only object in the
list is the directory object, do not perform the bulk stat rpc as
it just wastes time.  All of the required objects are already cached
with current callbacks.

Change-Id: Ic0fac50f36bdca1e79f48ca308c373a2b3152675
Reviewed-on: http://gerrit.openafs.org/9675
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoFix build with separate objdirs
Ben Kaduk [Tue, 26 Mar 2013 21:57:28 +0000]
Fix build with separate objdirs

The conversion of pam/ to use libtool introduced references to
file names with LT_CCRULE that are not subject to make's vpath
searching.

Sprinkle ${srcdir} accordingly to fix the build.

Change-Id: Ia500fe2a57813fdd93ca1767e243fd947d6b8e1e
Reviewed-on: http://gerrit.openafs.org/9677
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agovolser: Indicate busy volume with VBUSY
Andrew Deason [Tue, 26 Mar 2013 22:00:05 +0000]
volser: Indicate busy volume with VBUSY

Commit 34fc86bcc749f3bd059831b7e5dae03dc09a9393 changed several uses
of VBUSY to VOLSERVOLBUSY in order to detect retriable operations.
However, one such change did not change an Rx abort code, but instead
was used for the 'status' field for a volintInfo or volintXInfo
structure. That is not really a general error code, but a field with a
few specific known values (at least, that is how existing clients
interpret it).

Go back to using VBUSY, so clients indicate the volume as busy,
instead of as offline/unattached.

Reported by Andy Malato.

Change-Id: Ia569633d98266cb15c059e66150d8d7f91d20dca
Reviewed-on: http://gerrit.openafs.org/9678
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoaklog: Only try to use krb5-weak.conf if it exists
Andrew Deason [Tue, 26 Mar 2013 18:27:33 +0000]
aklog: Only try to use krb5-weak.conf if it exists

The logic we use for using krb5-weak.conf to allow 'weak crypto'
requires us to know where the default krb5.conf is. The default
krb5.conf local can vary significantly depending on the platform, and
we don't have a good way of figuring out what it is, so we guess. We
may guess wrong.

To limit the cases where we guess wrong, only try to do this
workaround if the krb5-weak.conf file actually exists.

Change-Id: Id3905268b5cc22dafb4dd539b9f3d323a656fee2
Reviewed-on: http://gerrit.openafs.org/9667
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

8 years agoFix DARWIN build with clang
Ben Kaduk [Tue, 26 Mar 2013 21:42:38 +0000]
Fix DARWIN build with clang

In 1d8937b86050 we added a function call to kauth_cred_unref in the
DARWIN100 case (replacing a macro), but added the inclusion of
sys/kauth.h only when using versions older than DARWIN80.
On DARWIN100 and above, clang detects that the now-implicit function
declaration is in conflict with the actual prototype, which is included
later through afs/sysincludes.h when compiling the kernel rx code.

Since including sys/kauth.h seems to have been harmless for old versions,
just include it always.

Change-Id: I4b65f5405a3de918091f8c25440801d0ce9f90b8
Reviewed-on: http://gerrit.openafs.org/9676
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8 years agoaklog: Search for /etc/krb5/krb5.conf
Andrew Deason [Tue, 26 Mar 2013 18:14:30 +0000]
aklog: Search for /etc/krb5/krb5.conf

aklog tweaks the KRB5_CONFIG environment var when performing one of
our 'weak crypto' workarounds. We assume that the default krb5.conf is
/etc/krb5.conf, but for Solaris 11 libkrb5, krb5.conf is in
/etc/krb5/krb5.conf. Although this file could be anywhere, try
/etc/krb5/krb5.conf too, so we at least work on stock Solaris.

Change-Id: I1f53b9b58549da04f2a27f1f579dd0084796e51d
Reviewed-on: http://gerrit.openafs.org/9666
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agodafs: prevent corruption in large fsstate.dat files
Mark Vitale [Wed, 13 Mar 2013 02:13:20 +0000]
dafs: prevent corruption in large fsstate.dat files

If while writing to the fsstate.dat file, it exceeds the current
size of the file (multiples of FS_STATE_INIT_FILESIZE (8MiB)),
we call fs_stateResizeFile.  This un-mmaps, truncates, and
re-mmaps the file.  Unfortunately, fs_stateMapFile() resets the
state->mmap.offset and .cursor, so any writes in flight over
the resize will overwrite the first bytes of the file (and leave
zeros in the file where the data should have been written).

Upon return from the write that caused a file resize, the offset
is eventually corrected and the state dump continues with a
silent failure.  Eventually the state dump completes and the
file header is rewritten; this may conceal some or all of
the overwrite damage at offset 0.  However, any zeros near the 8MiB
offset (and its multiples) remain as corruption.

Add a flag to fs_stateMapFile() to allow the caller to specify if
the offset and cursor should be preserved.  Modify fs_stateResizeFile()
to use this capability.

testing note: temporarily reduced FS_STATE_INIT_FILESIZE to 256 bytes
during testing in order to make the problem easier to reproduce.
This problem would normally occur only on relatively large/active
DAFS fileservers.

Change-Id: I9b6c57ef7727837ae7cfc00d02192983355dad2b
Reviewed-on: http://gerrit.openafs.org/9599
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agosalvager: prevent assertion during -orphans attach
Mark Vitale [Fri, 25 Jan 2013 23:47:49 +0000]
salvager: prevent assertion during -orphans attach

Improve JudgeEntry() detection of orphaned directories to
prevent unintentional deletion of their '.' and '..' entries.
This in turn prevents a later assert (opr_Verify) when we try to
delete and re-add '..' in order to attach the orphan.

In JudgeEntry(), 2 sources of information about a
directory entry are compared for consistency:
 - vnodeEssence (unique) from its vnode index entry
 - name, vnodeNumber and unique from its dir blob entry

A directory entry may be ignored, deleted, or repaired/replaced,
based upon the results of these and other tests (e.g. dirOprhaned).

The '.' and '..' entries are treated as special cases because
we do not want to delete them at this point if this directory
is orphaned.  However, the current test for orphanhood
(vnodeEssence->unique == 0) is not sufficient; it could be
zero for other reasons.  This commit now uses the dirOrphaned
flag to test for this.

However, we are still interested in doing the right thing
for '.' and '..' entries with vnodeEssence->unique == 0.
This may indicate that the dir blob entry is pointing at the
wrong vnode, and that vnode has unique==0.  The current code
incorrectly ignores (returns 0) this case.  This commit now
now falls through to the repair/replace code so that we can
find the correct vnode for this entry.

The current code assumes that the 'vnodeEssence == 0 &&
!dirOrphaned' case doesn't exist.

Thanks to Andrew Deason for his assistance.

Change-Id: Id7c466fcc0f031b8fccb52dc51493eeed040cf95
Reviewed-on: http://gerrit.openafs.org/9104
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8 years agoEnable dvolser and tvolser for FreeBSD
Ben Kaduk [Wed, 13 Mar 2013 17:27:32 +0000]
Enable dvolser and tvolser for FreeBSD

The top-level Makefile did not recurse into dvolser or tvolser for
FreeBSD.  They compile just fine, so enable them.

Change-Id: Id85e3a72f53b85e6b155b224268e2fe587fe3406
Reviewed-on: http://gerrit.openafs.org/9598
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

8 years agoutil: fix dirpath use of clntEtcDir on Windows
Jeffrey Altman [Tue, 19 Mar 2013 20:14:18 +0000]
util: fix dirpath use of clntEtcDir on Windows

When commit 9b0a7f5d13115fe5760db16587fe81dd35a5a0ef added the variable
'clntEtcDir' it failed to assign it a value on Windows.

Change-Id: I02cfb994a28e3e1032741d1b2710acb5d40d9bfd
Reviewed-on: http://gerrit.openafs.org/9635
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agovol: remove duplicate stmp declaration
Jeffrey Altman [Fri, 15 Mar 2013 03:27:25 +0000]
vol: remove duplicate stmp declaration

Patchset 38cf31463e3f3c675de727c1e793e117a90e6d20 added a definition of
afs_ino_str_t stmp which should have replaced the b64_string_t stmp
declaration that was already present.

Thanks to Jason Madar for noticing.

FIXES 131620

Change-Id: I780efd55dea33f1f7893b68285c841e80660b3f3
Reviewed-on: http://gerrit.openafs.org/9608
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8 years agoUpdate NEWS for 1.6.2.1
Stephan Wiesand [Thu, 14 Mar 2013 09:35:30 +0000]
Update NEWS for 1.6.2.1

Change-Id: I2c08474cc6034d40cef0d77d94c070bcdd8d4563
Reviewed-on: http://gerrit.openafs.org/9602
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Ken Dreyer <ktdreyer@ktdreyer.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Paul Smeddle <paul.smeddle@gmail.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoMake NEWS match the 1.6.2 Release Notes
Stephan Wiesand [Thu, 14 Mar 2013 09:16:30 +0000]
Make NEWS match the 1.6.2 Release Notes

Change-Id: Ic98bbb37e2f81e36724e69af348c06a2c6b8b5c3
Reviewed-on: http://gerrit.openafs.org/9601
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Ken Dreyer <ktdreyer@ktdreyer.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoWindows: Create Symlinks in Volume Roots
Jeffrey Altman [Sat, 23 Mar 2013 01:14:48 +0000]
Windows: Create Symlinks in Volume Roots

Permit the CreateSymbolicLink API to create symlinks in volume
root directories.

Change-Id: I779f127f9a7e4ddfee41fe7a9398f20175843be0
Reviewed-on: http://gerrit.openafs.org/9656
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Robocopy Symlinks
Jeffrey Altman [Fri, 22 Mar 2013 20:10:54 +0000]
Windows: Robocopy Symlinks

This patchset enables AFS Symlinks and DFSlinks to be copied to
a local NTFS disk using robocopy's /SL option.

Separate print names and substitute names are now provided permitting
the reparse data copied from AFS to be applied to a local disk object
for recreation.

Change-Id: I7bab4e8352a069a14b9ac4b3b2e22819f3de7a23
Reviewed-on: http://gerrit.openafs.org/9655
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: NPAddConnection no local name and connected
Jeffrey Altman [Thu, 21 Mar 2013 11:57:34 +0000]
Windows: NPAddConnection no local name and connected

The WN_ALREADY_CONNECTED error is only to be returned if a local
device name (aka drive letter) is provided in the request.  Otherwise,
the proper return status is WN_SUCCESS if an unnamed connection is
requested.

Change-Id: I1e1ca47a84e353db66e2830ec11f968a3578c4f6
Reviewed-on: http://gerrit.openafs.org/9642
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: NPCancelConnection without drive letter
Jeffrey Altman [Wed, 20 Mar 2013 20:23:59 +0000]
Windows: NPCancelConnection without drive letter

When canceling a network connection to a UNC path, do not match
connections that have drive letters assigned.  Only cancel the connection
if there it matches the UNC path and has no local name.

Change-Id: I2c27c6d08cec65406f7e7f9eb61cd6d6c7be1f5c
Reviewed-on: http://gerrit.openafs.org/9640
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: AFSDeleteObjectInfo InterlockedExchange
Jeffrey Altman [Fri, 22 Mar 2013 04:54:36 +0000]
Windows: AFSDeleteObjectInfo InterlockedExchange

Use InterlockedExchangePointer to disconnect the ObjectInformationCB
pointer from the caller.  This ensures that only one thread can
successfully call AFSDeleteObjectInfo on the same object at a time.

Change-Id: Ie70f52fc443f88c3cb4be41f12caa91466d92905
Reviewed-on: http://gerrit.openafs.org/9644
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: FSCTL_SET_REPARSE_POINT NULL ptr dereference
Jeffrey Altman [Thu, 21 Mar 2013 23:34:25 +0000]
Windows: FSCTL_SET_REPARSE_POINT NULL ptr dereference

Avoid a potential NULL pointer dereference if the ParentObjectInfo
object cannot be found.  If the Btree lookup fails, do not call
AFSCreateSymlink() and do not decrement the ObjectInfo refcount.
Doing so will result in a BSOD.

Change-Id: Ibd3e4ebb343f6c3cff8bf1cb160e42938d0f906c
Reviewed-on: http://gerrit.openafs.org/9643
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Remove Driver Verifier warning of memory leak
Jeffrey Altman [Thu, 21 Mar 2013 10:28:25 +0000]
Windows: Remove Driver Verifier warning of memory leak

Work items are now queued in an AFSRedir.sys data structure
and are not freed when AFSRedirLib.sys is unloaded.  Therefore,
do allocate the memory with AFSLibExAllocatePoolWithTag().
The allocation by AFSLibExAllocatePoolWithTag results in a false
Driver Verifier warning of a memory leak on unload.

Change-Id: I268c4b6d20090e88114456a24b7648eef59f6289
Reviewed-on: http://gerrit.openafs.org/9641
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: buf_ClearRDRFlag and cm_directIO
Jeffrey Altman [Wed, 20 Mar 2013 14:10:03 +0000]
Windows: buf_ClearRDRFlag and cm_directIO

When 'cm_directIO' is true, there are no RDR held buffers therefore
there is nothing for buf_ClearRDRFlag() to do.  Do not pass 'Go',
do not obtain cm_scache.rw exclusive nor buf_globalLock shared.
Simply return immediately.

Change-Id: I4c6d1486e3a2bef987a3eb36d8de446e9009e0d2
Reviewed-on: http://gerrit.openafs.org/9638
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: buf_RDRBuffersExist and cm_directIO
Jeffrey Altman [Wed, 20 Mar 2013 14:08:21 +0000]
Windows: buf_RDRBuffersExist and cm_directIO

If 'cm_directIO' is true, then no RDR buffers exist.  Return immediately,
do not pass 'Go', and do not lock and walk the buffer hash table.

Change-Id: I9c6499d429d7591c8bd67ce3077ff4c4e7d6d62d
Reviewed-on: http://gerrit.openafs.org/9637
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: buf_CleanVnode avoid lock contention
Jeffrey Altman [Wed, 20 Mar 2013 14:04:41 +0000]
Windows: buf_CleanVnode avoid lock contention

In the middle of the big loop do not obtain buf_globalLock unless
cm_buf.qFlags & CM_BUF_QREDIR is non-zero.  buf_globalLock is heavily
contested and any reduction in contention is an improvement.
CM_BUF_QREDIR is never set when 'cm_directIO' is true (now the default)
so this is a huge win.

Change-Id: I0b150bf77a0f1d748f94026d3b74bc7d90e7c3c6
Reviewed-on: http://gerrit.openafs.org/9636
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agowindows: AFSQueryDirectoryQueryDirect no Symlinks
Jeffrey Altman [Tue, 19 Mar 2013 15:48:42 +0000]
windows: AFSQueryDirectoryQueryDirect no Symlinks

When evaluating symlinks for directory enumerations, the response
must properly set the FILE_ATTRIBUTE_DIRECTORY flag based upon the
file attributes of the target.  At the present time the target is
not evaluated by the service and AFSQueryDirectoryQueryDirect does
not have the correct context in which to evaluate the target.

Instead of returning an incorrect result to the application, exit
AFSQueryDirectoryQueryDirect() returning STATUS_REPARSE_OBJECT which
is interpreted by AFSQueryDirectory() to perform a full directory
enumeration.

Change-Id: Ic35dcff31f1098b9f40f3a37534b79439e0e3f1f
Reviewed-on: http://gerrit.openafs.org/9633
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: 1.7.23 Release Notes
Jeffrey Altman [Tue, 19 Mar 2013 02:43:09 +0000]
Windows: 1.7.23 Release Notes

Add explanation of Win 7 Explorer Shell Read-Only Volume vs Network Drive
Letter Mapping bug.

Change-Id: I7cf1300c9ec91cbbd347030d0bb9642c78607398
Reviewed-on: http://gerrit.openafs.org/9634
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoLinux 3.9: hlist iterator change
Marc Dionne [Wed, 6 Mar 2013 01:54:50 +0000]
Linux 3.9: hlist iterator change

hlist iterators have been reworked to not require a temporary
node parameter.

Change-Id: Ibea1295163bd39ff2901a2194aa46c3d342f5128
Reviewed-on: http://gerrit.openafs.org/9403
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoWindows: Avoid cm_Analyze race on cm_serverRef lists
Jeffrey Altman [Mon, 18 Mar 2013 16:07:55 +0000]
Windows: Avoid cm_Analyze race on cm_serverRef lists

cm_Analyze() accepted as a parameter a pointer to the first element
on a cm_serverRef list which is only ever used for VL operations.

cm_Analyze() would separately call cm_GetVolServerList() to obtain
the cm_serverRef list for RXAFS operations.  Then the variable 'serversp'
would be set to the first element of the list.

'serversp' was then used to refer to the list and would be passed to
cm_SetServerBusyStatus() and cm_ResetServerBusyStatus() which would
in turn obtain the cm_serverLock while it manipulated the cm_serverRef
status flags for the elements in the list.

The problem is that passing a pointer to the first element of the
cm_serverRef list without holding cm_serverLock can permit the list
contents to be altered including removal of the first element.  If the
race is lost and the memory associated with the first element is freed
before access, the afsd_service.exe will crash.

This patchset makes a number of changes.  First, the cm_serverRef_t
parameter is changed from a pointer to the first element of the list
to be a pointer to the HEAD pointer of the list.  Since it is ever only
used for cm_cell.vlServerp lists, the parameter is renamed to
'vlServerspp'.   Second, a separate "cm_serverRef_t ** volServerspp"
variable is allocated for the return value from the cm_GetVolServerList()
operations.

cm_SetServerBusyStatus() and cm_ResetServerBusyStatus() are altered to
accept a pointer to the HEAD of the list instead of a pointer to the first
element.  The cm_serverLock is now held read instead of write because the
list itself is not being altered.  All of the state changes being applied
to the cm_serverRef objects are atomic.

Finally, cm_serverLock is held across all list traversals within
cm_Analyze().  A read lock is obtained if the elements of the list are not
being removed or inserted and a write lock is obtained if they are.

Change-Id: I48464e90a828706dad442c019c75a717b06d690b
Reviewed-on: http://gerrit.openafs.org/9625
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Replace AFSDbgMsgLog func with macro
pete scott [Wed, 13 Mar 2013 13:54:00 +0000]
Windows: Replace AFSDbgMsgLog func with macro

In order to reduce computation overhead when trace logging is not
active replace the AFSDbgMsgLog function call with a macro,
AFSDbgTrace.

Change-Id: I7bccee0ddffcd8488f81fcebbb970aa15c8dc52e
Reviewed-on: http://gerrit.openafs.org/9621
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Test AFS_DBG_FLAG_BREAK_ON_ENTRY earlier
Jeffrey Altman [Sun, 17 Mar 2013 12:43:39 +0000]
Windows: Test AFS_DBG_FLAG_BREAK_ON_ENTRY earlier

During AFSRedir.sys initialization, check the AFS_DBG_FLAG_BREAK_ON_ENTRY
registry flag before initializing the trace log system.

Change-Id: I928fab78b40dce51d2c0686bce68eb76f941b214
Reviewed-on: http://gerrit.openafs.org/9622
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Increase AFS DeviceObject StackSize
Jeffrey Altman [Fri, 15 Mar 2013 15:40:29 +0000]
Windows: Increase AFS DeviceObject StackSize

Increase the StackSize parameter of the DeviceObjects allocated
by the AFS Redirector framework.  The StackSize parameter is used
to notify callers how many Irp Stack frames will be consumed.  Now
that the redirector is using IoCompletion routines, an additional
stack frame is required to handle calls to the AFS Redirector library
driver.

Thanks to Peter Scott for identifying the solution.

FIXES 131618

Change-Id: Ib66f884911f0d425e6e07f338a36b3ebedeb8871
Reviewed-on: http://gerrit.openafs.org/9609
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: File Attribute Reporting Consistency
Jeffrey Altman [Sat, 16 Mar 2013 05:18:14 +0000]
Windows: File Attribute Reporting Consistency

Do a better job of consistently reporting file attribute information
via directory queries and file information queries.  Avoid computing file
attribute information for file information queries that do not return them
(e.g., Name Information) because computing it is expensive.

Change-Id: I5c8120698261f555edfa98e92230705b593aca36
Reviewed-on: http://gerrit.openafs.org/9613
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: netbios name comparisons are case insensitive
Jeffrey Altman [Sat, 16 Mar 2013 05:15:01 +0000]
Windows: netbios name comparisons are case insensitive

When parsing the symlink target string to categorize it as AFS Symlink
or DFS Link, the comparison with the netbios name string must be case
insensitive.  Otherwise, symlinks are reported to the redirector as
DFS Links.  For the most part they will work since the AFS redirector
requesting MUP to Reparse the \\AFS path will call back into the AFS
redirector.  However, the attributes on symlinks to files will be wrong
as DFS Links can only be links to directories.

Change-Id: Ia9652991549b0783f7a534b071ff99ceabdd3382
Reviewed-on: http://gerrit.openafs.org/9612
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: add RDR_ExtAttributes
Jeffrey Altman [Sat, 16 Mar 2013 05:13:01 +0000]
Windows: add RDR_ExtAttributes

Add RDR_ExtAttributes to compute the file attributes for redirector
queries.   The attributes reported via the RDR interface need to be
different from the SMB interface because the SMB interface does not
support reparse points nor does it support DFSLinks.

Change-Id: I5d5172f5afc1d50e2622e2068e20447cd1098fbb
Reviewed-on: http://gerrit.openafs.org/9611
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: drive mapping enumeration infinite loop
Jeffrey Altman [Fri, 15 Mar 2013 17:07:21 +0000]
Windows: drive mapping enumeration infinite loop

If WNetEnumResource returns an error as opposed to success, such as
ERROR_UNEXP_NET_ERR, the enumeration loop would retry forever passing
zero for 'cEntries' which in turn results in a successful response
containing zero entries.

Change the while conditional to test for continued success instead
of ERROR_NO_MORE_ENTRIES.

Change-Id: I93af73b379aa455de7a8b3264b5178d482bb52b0
Reviewed-on: http://gerrit.openafs.org/9610
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: remove last bits of BIOD from Direct Store
Jeffrey Altman [Thu, 14 Mar 2013 23:40:14 +0000]
Windows: remove last bits of BIOD from Direct Store

Direct I/O Store operations are performed directly against a memory
buffer stored in the background direct store rock structure.  There is no
BIOD used in the current implementation.  Remove the BIOD from the call
stack.

Change-Id: I78d7b898a6eec5eb39c943e760a678913b42bf0d
Reviewed-on: http://gerrit.openafs.org/9607
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: VolumeInfoReadOnlyFlag registry option
Jeffrey Altman [Thu, 14 Mar 2013 17:05:28 +0000]
Windows: VolumeInfoReadOnlyFlag registry option

Windows 7 Explorer Shell has a bug when processing drive letters
mapped to UNC paths whose target volume information specifies the
FILE_READ_ONLY_VOLUME flag.  When set, not only is the .readonly
volume treated as read only but all volumes that can be accessed via the
drive letter.   This bug is fixed in Windows 8.

Add a registry configuration option to permit configuration of the
behavior.  Sites that do not use drive letter mappings will want to
enable it even on Windows 7 because it permits the Explorer Shell
to disable the "Delete" and "Rename" options and others when the current
directory is read only.

The default is disabled on Win7 and below; enabled on Win8 and above.

Change-Id: I73bbaf7d40918650b1a217ed44409c0679920536
Reviewed-on: http://gerrit.openafs.org/9606
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Protect against DirEntry with NULL ObjInfo
Jeffrey Altman [Thu, 14 Mar 2013 16:30:36 +0000]
Windows: Protect against DirEntry with NULL ObjInfo

During cleanup protect AFSExamineObjectInfo() and AFSExamineDirectory()
from DirectoryCB objects that have a NULL ObjectInformation pointer.

Change-Id: Id46f6b53ec4861f5ac2d28b918d073201d2433ce
Reviewed-on: http://gerrit.openafs.org/9603
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agovos: noise messages when attempting to delete non-existent volume
Mark Vitale [Thu, 7 Mar 2013 14:34:55 +0000]
vos: noise messages when attempting to delete non-existent volume

With vos refactor commit f4e73067cdef990262c69c38ac98761620a63f25,
some formerly conditional volume deletes are now unconditional.
This regresses 'vos move' output with harmless "error" messages
when AFSVolTransCreate() returns VNOVOL:
  "Failed to start transaction on <volume>"
  "Volume not attached, does not exist, or not online"

Modify DoVolDelete() to return early (and silently) with VNOVOL
in this case, allowing the caller to handle this appropriately.

Change-Id: I21a72e38f330335adf97ac50a7ac7d0fb97c1a9c
Reviewed-on: http://gerrit.openafs.org/9596
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoOpenBSD: Replace "vnodeop_desc" with "vops" in kernel module.
Antoine Verheijen [Mon, 21 Jan 2013 09:30:58 +0000]
OpenBSD: Replace "vnodeop_desc" with "vops" in kernel module.

In OpenBSD 4.9, the vnode operations vector in the "vnode" struct
was changed from using a "vnodeop_desc" struct to a new "vops"
struct. This patch makes the appropriate changes to the OpenBSD
kernel module support to accommodate the change.

Change-Id: Ib47259e1213e29658a691ce3a53d7ac88e8d746b
Reviewed-on: http://gerrit.openafs.org/8928
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

8 years agoWindows: ReleaseNotes updates
Jeffrey Altman [Tue, 12 Mar 2013 14:59:44 +0000]
Windows: ReleaseNotes updates

explicitly list WinRT as unsupported.

Mention KFW 4.0.

Update Reparse Point text.

Update JPSoftware Take Command references.

Update UNC path processing text.  Reference PowerShell 3.0 and Cygwin.

Change-Id: Ib3d4d33173cf4808792c92737eb88a909d7d176b
Reviewed-on: http://gerrit.openafs.org/9589
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: avoid null cellp dereference during dump
Jeffrey Altman [Tue, 12 Mar 2013 04:38:05 +0000]
Windows: avoid null cellp dereference during dump

When performing a memory dump if cm_ucell_t.cellp is NULL, do
not attempt to print the cell name.

Change-Id: I146b90b5424b93d0c52a758b33fcff1bcf441e77
Reviewed-on: http://gerrit.openafs.org/9582
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoRevert "Windows: Treat all cached writes as write-through"
Jeffrey Altman [Fri, 7 Dec 2012 04:28:56 +0000]
Revert "Windows: Treat all cached writes as write-through"

This reverts commit 5130681fa2d4a35d3f0b578d92c5db1892fdfb18.

Change-Id: If33a6e1f6969628eaa74d5a56f2eec5560d827f4
Reviewed-on: http://gerrit.openafs.org/9572
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Enforce free space checks every 1MB
Jeffrey Altman [Mon, 11 Mar 2013 04:43:26 +0000]
Windows: Enforce free space checks every 1MB

Instead of performing a free space (or quota) check on every extending
write, perform the check only when the file length is increased beyond
the next 1MB boundary.   The file server permits 1MB quota over runs
and issuing the volume status rpc to the file server is extremely
expensive.  Especially for append only applications that write just a few
bytes at a time.

Change-Id: I74ff17ba5a95adb41350add24bc09a74c950a4fb
Reviewed-on: http://gerrit.openafs.org/9555
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agobos: Remove theoretical overflow in DateOf
Simon Wilkinson [Fri, 8 Mar 2013 16:15:51 +0000]
bos: Remove theoretical overflow in DateOf

DateOf copies the results of ctime into a static buffer. Typically
ctime will return a 26 byte string, but if you pass it a year larger
than 9999 (which we shouldn't), you can get a 32 (or more) byte string.

Get rid of this unlikely event by using strlcpy for the copy. We already
truncate at 24 bytes when we remove the \n, so this shouldn't cause any
further problems.

Really, this whole thing should be rewritten to use strftime.

Caught by coverity (#985776)

Change-Id: I18f6828d6ec3d79ecaf1dad8e27d3e8691ce87d5
Reviewed-on: http://gerrit.openafs.org/9551
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

8 years agobos: Don't overflow buffer with key data
Simon Wilkinson [Fri, 8 Mar 2013 13:02:26 +0000]
bos: Don't overflow buffer with key data

When parsing key data from the command line, don't overflow the
buffer used to hold it - instead just give an error if the data
is too long.

Caught by coverity (#985775)

Change-Id: I44fb62d30c5022e650475b3ca51a28bcb7cf1e06
Reviewed-on: http://gerrit.openafs.org/9550
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

8 years agobos: Don't overflow cellname buffer
Simon Wilkinson [Fri, 8 Mar 2013 13:01:28 +0000]
bos: Don't overflow cellname buffer

Don't overflow the fixed sized cellname buffer when copying the
information in from the command line - instead, just use a
dynamically allocated buffer.

Caught by coverity (#985775)

Change-Id: If87b1ba9bcb990d3145a89627e212144cd78f5a0
Reviewed-on: http://gerrit.openafs.org/9549
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agobutc: Init volheader before using it for hton
Simon Wilkinson [Mon, 4 Mar 2013 16:34:20 +0000]
butc: Init volheader before using it for hton

When converting a volume header from host to network order, make
sure that any unused fields in the structure are zero'd, so we don't
end up filling them with stack garbage in the network version of
the structure.

Caught by coverity (#985956)

Change-Id: I3e039ffcb102a97afeb0e2223de12523f53b0a67
Reviewed-on: http://gerrit.openafs.org/9548
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

8 years agobucoord: restore requires server and partition
Simon Wilkinson [Mon, 4 Mar 2013 16:31:50 +0000]
bucoord: restore requires server and partition

The VolRestoreCmd sub command requires that the user specifies
the server and partition - calls which don't do so won't get past
libcmd. Don't check again in the handler that they have been supplied,
as it confuses things.

Caught by coverity (#985953)

Change-Id: Id4548c117b677bd2048744ade8fd91bb15e0e35e
Reviewed-on: http://gerrit.openafs.org/9547
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

8 years agoupserver: Don't overflow file and hostname buffers
Simon Wilkinson [Mon, 4 Mar 2013 16:22:08 +0000]
upserver: Don't overflow file and hostname buffers

If the user specifies a ridiculously long command line, don't
overflow the filename or hostname buffers with what they supply.

Caught by coverity (#985911)

Change-Id: Ia73f9fb94491f5691358eec1d13dbdd2651a604c
Reviewed-on: http://gerrit.openafs.org/9546
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoafscp: null-terminate root.cell dir if needed in dynroot mode
Derrick Brashear [Thu, 7 Mar 2013 11:53:16 +0000]
afscp: null-terminate root.cell dir if needed in dynroot mode

instead of doing a check for something which will never be true,
and then terminating, just terminate if it's not already
null-terminated.

Change-Id: I8ad18800de22c8d10eb27fbcb2fffb2b3a5a9127
Reviewed-on: http://gerrit.openafs.org/9439
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Chaskiel Grundman <cg2v@andrew.cmu.edu>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoWindows: Use Microsoft IO_REPARSE_TAG_SYMLINK tag
Jeffrey Altman [Fri, 8 Mar 2013 06:41:22 +0000]
Windows: Use Microsoft IO_REPARSE_TAG_SYMLINK tag

For symlinks and DFS Links use Microsoft's NTFS Symlink tag,
IO_REPARSE_TAG_SYMLINK, instead of the OpenAFS assigned tag.

The DeleteFile() and RemoveDirectory() Win32 APIs do not delete
non-Microsoft reparse points and instead delete the target object.
While it is possible for Take Command and potentially Cygwin to
alter their behavior with AFS specific knowlege, it is not possible
to alter the Explorer Shell, cmd.exe and powershell.

Using the Microsoft tag is a violation of Microsoft policy.

Change-Id: I90a419fe21637bb871d08528463d1178078a9947
Reviewed-on: http://gerrit.openafs.org/9497
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: GetReparseData UNC path format
Jeffrey Altman [Thu, 7 Mar 2013 05:54:32 +0000]
Windows: GetReparseData UNC path format

When specifying UNC paths for Symlink and UNCLink targets output
the paths using true UNC notation "\\server\..." instead of "\server\...".

Change-Id: I51ecc6578fb0a984a5ad44b1bf1e40556e737465
Reviewed-on: http://gerrit.openafs.org/9426
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: cm_BPlusDirEnumBulkStatNext index error
Jeffrey Altman [Thu, 7 Mar 2013 14:25:09 +0000]
Windows: cm_BPlusDirEnumBulkStatNext index error

In cm_BPlusDirEnumBulkStatNext the 'next' variable was being set
even if the FileId was not added to the list of objects added to
the cm_bulkStat array.  Delay the assignment to ensure that 'next'
refers to the first element in the array.

In the CM_ERROR_BULKSTAT_FAILURE processing, 'next' is used to
obtain a reference to the cm_scache object that is supposed to
correlate to the [1] entry in the array.  If 'next' == -1, there
is no such entry.  Add a conditional to ensure that 'next' is not
used when its value is -1.

Change-Id: I4ebc49de4bf67eee5a28790cd49f0128891cc202
Reviewed-on: http://gerrit.openafs.org/9450
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: PopulateCurrentEntry Symlink Targets
Jeffrey Altman [Thu, 7 Mar 2013 05:59:01 +0000]
Windows: PopulateCurrentEntry Symlink Targets

Handle a broader range of symlink target formats and be more
precise regarding what is an afs symlink or a dfs link.

Change-Id: Ia37c1adf5d64ba44fffca976885a455e6900a047
Reviewed-on: http://gerrit.openafs.org/9428
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Claim success for Delete Reparse Tag
Jeffrey Altman [Thu, 7 Mar 2013 05:56:15 +0000]
Windows: Claim success for Delete Reparse Tag

The typical pattern for deleting a reparse point is

 1. open reparse point object
 2. delete reparse tag
 3. set delete on close
 4. close handle

Claim success when we receive delete reparse tag fsctl so that
the delete on close disposition can be set.

Change-Id: I8f4212dd6ba04be95455eaa210e632ca59cfa7c8
Reviewed-on: http://gerrit.openafs.org/9427
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Report actual volume creation time
Jeffrey Altman [Mon, 11 Mar 2013 04:03:38 +0000]
Windows: Report actual volume creation time

The cm_scache.volumeCreationDate is populated by any non-bulkstat
callback issuing operation.  If it is not set at the time the
redirector requests volume information, force an RXAFS_FetchStatus
and then use the resulting timestamp in the response.

Change-Id: I8ab471767dd6525efc71deff073d54ae38f1f462
Reviewed-on: http://gerrit.openafs.org/9554
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: RDR_UpdateFile dscp != scp
Jeffrey Altman [Sun, 10 Mar 2013 14:51:47 +0000]
Windows: RDR_UpdateFile dscp != scp

Do not set bScpLocked when obtaining scp->rw as scp != dscp.

Change-Id: I878166cd510a188a0e56cc92660e74b9625c3ab6
Reviewed-on: http://gerrit.openafs.org/9553
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Service processing for Symlink creation
Jeffrey Altman [Wed, 6 Mar 2013 14:53:41 +0000]
Windows: Service processing for Symlink creation

Initial support for symlink creation via the Win32 CreateSymbolicLink api.
Add support for AFS_REQUEST_TYPE_CREATE_SYMLINK redirector requests via
the new RDR_CreateSymlinkEntry() function.

Since CreateSymbolicLink api creates a new directory or file object and
then assigns the Microsoft reparse tag data to that object,
RDR_CreateSymlinkEntry must first delete the empty directory or file and
then create the new symlink object in its place.  If the empty object can
be removed but the symlink cannot be created, STATUS_FILE_DELETED is
returned to indicate to the redirector that a failure occurred that
changed the state of the directory without creating a new object.

If the empty object cannot be removed, a STATUS_ACCESS_DENIED error will
be returned and the empty object will unfortunately remain in the AFS
directory.

Target path translation is performed.  Absolute AFS paths are stored in
UNIX notation.  Absolute non-AFS UNC and device paths are prefaced with
"msdfs:".

Change-Id: If8b4729dd5fffddc71221750852b8be731c83cab
Reviewed-on: http://gerrit.openafs.org/9425
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoauth: Don't overflow lower case cell string
Simon Wilkinson [Sun, 3 Mar 2013 17:47:49 +0000]
auth: Don't overflow lower case cell string

When building tcell_l in kerberosSuperUser, make sure that we
don't overflow the string that we're constructing.

Use the opr_lcstring function to do the lower case conversion,
rather than rolling our own.

Caught by coverity (#985772)

Change-Id: I6e28cfc54883aac7e3a3eb2f4e2b2bf7ebc0bc63
Reviewed-on: http://gerrit.openafs.org/9544
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Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoauth: Don't overflow buffer in CompFindUser
Simon Wilkinson [Sat, 2 Mar 2013 13:01:14 +0000]
auth: Don't overflow buffer in CompFindUser

The fullname buffer in CompFindUser is theoretically big enough
to take the data usually supplied to it. However, play it safe by
using strlcat and strlcpy to catch buffer overflows.

Caught by coverity (#985771)

Change-Id: Icc80d012b61ae90e1a62a814f7a6d552bb264294
Reviewed-on: http://gerrit.openafs.org/9543
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoauth: Catch long cells in backwards compat code
Simon Wilkinson [Sat, 2 Mar 2013 12:55:18 +0000]
auth: Catch long cells in backwards compat code

ktc_SetTokenEx can fall back to calling the SetToken pioctl when
the kernel module doesn't support the newer call. When we do this,
we have to transform the token structure into the older format.

Catch tokens whose cells are too long to be represented in the
older format, and bail with KTC_INVAL, rather than overflowing the
array.

Caught by coverity (#985770)

Change-Id: Ibaa1cc92c494cc6f4e56ebe7b16109d4558db131
Reviewed-on: http://gerrit.openafs.org/9449
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Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoaudit: Fix overflow in file backend
Simon Wilkinson [Sat, 2 Mar 2013 12:38:49 +0000]
audit: Fix overflow in file backend

If the filename passed to open_file was larger than MAXPATHLEN-5,
then we'd overflow the oldName buffer when creating the backup
filename. Fix the overflow by using a malloc'd buffer instead.

Caught by coverity (#985767)

Change-Id: Ie364aae0749b3658ab11a354844878d10c6970ab
Reviewed-on: http://gerrit.openafs.org/9448
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Reviewed-by: Derrick Brashear <shadow@your-file-system.com>

8 years agoWindows: IsSpaceAvail lock order violation
Jeffrey Altman [Sun, 10 Mar 2013 14:49:42 +0000]
Windows: IsSpaceAvail lock order violation

cm_IsSpaceAvailable() obtains the cm_scache.rw lock of the volume
root directory.  Therefore it is a lock order violation to call the
function while any other cm_scache.rw lock is held belonging to an
object in the same volume.   vnode 1 is always less than any other
vnode value.

Change-Id: Id34591b6ccec8d7e8e0fe48e3357c991cd99acfb
Reviewed-on: http://gerrit.openafs.org/9552
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Fix directory to service null mask lookups
Jeffrey Altman [Sat, 9 Mar 2013 20:43:14 +0000]
Windows: Fix directory to service null mask lookups

The direct to service for non-wildcard lookups, commit
b7ba97ad537bd0e9a241f052ddd1c3a50c74745b, introduced a bug when the search
mask is left unspecified.   Do not set bNonWildcardMatch to TRUE
when the mask is NULL.

Change-Id: I6c4846b443acc7e5e42d4e83e75ef383fc400db9
Reviewed-on: http://gerrit.openafs.org/9542
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Peter Scott <pscott@kerneldrivers.com>
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Permit deletion of reparse points
Jeffrey Altman [Fri, 8 Mar 2013 03:05:20 +0000]
Windows: Permit deletion of reparse points

AFSSetDispositionInfo did not set the AFS_DIR_ENTRY_PENDING_DELETE
flag if the DirectoryCB type was mountpoint, symlink, dfslink or invalid.
This patchset permits the flag to be set so reparse point objects can be
deleted without using the AFS "symlink.exe remove" command.

Change-Id: I03e1cb7b08989950a4307e59073e5fb712d1a901
Reviewed-on: http://gerrit.openafs.org/9475
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Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: AFSLocateNameEntry Backup Volume Change
Jeffrey Altman [Thu, 7 Mar 2013 22:39:05 +0000]
Windows: AFSLocateNameEntry Backup Volume Change

When AFSLocateNameEntry() calls AFSBackupEntry() in the name array it is
possible that the DirectoryCB returned belongs to a different VolumeCB.
If so, pCurrentVolume must be updated and reference counts must be
adjusted.

Change-Id: I9fcd30374b20f2e1c214a019feeab55c30ce9666
Reviewed-on: http://gerrit.openafs.org/9465
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Rod Widdowson <rdw@steadingsoftware.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: AFSLocateNameEntry OutVolumeCB can be NULL
Jeffrey Altman [Thu, 7 Mar 2013 22:28:36 +0000]
Windows: AFSLocateNameEntry OutVolumeCB can be NULL

It is possible for the AFSLocateNameEntry OutVolumeCB parameter
to be assigned a NULL value upon return.   Handle it in the callers.

Change-Id: I15e4581d4655dbaca7c4ca4b9e9af758e97c5c95
Reviewed-on: http://gerrit.openafs.org/9464
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: RDR SymbolicLink create support
pete scott [Tue, 5 Mar 2013 20:21:41 +0000]
Windows: RDR SymbolicLink create support

Permit the redirector to handle Microsoft's IO_REPARSE_TAG_MOUNT_POINT
and IO_REPARSE_TAG_SYMLINK requests.   The IO_REPARSE_TAG_SYMLINK request
is issued as a result of a CreateSymbolicLink Win32 API.

Creating a symlink in Windows is not equivalent to the way a symlink is
created in AFS or UNIX.  Instead of creating a symlink object whose data
string represents the target and mode bits indicate that the stream should
be treated as a link, on Windows it is a two step process.

To create a symlink to a directory, create an empty directory and then
assign the reparse tag data to the directory object.  To create a symlink
to anything else, create an empty file and assign the reparse tag data to
the file.  Deleting a reparse point simply removes the reparse tag data
and not the underlying directory or file.

The way this will work for AFS is that assigning reparse data to an
existing directory or file will require that the object be deleted from
the directory and a new symlink object be created in its place.  This is
why upon successful completion of the upcall to the service the directory
object information has the AFS_OBJECT_FLAGS_DIRECTORY_ENUMERATED flag
cleared.

This patchset permits symlink creation but does not do anything to support
symlink removal.

Symlink target data is not validated.

Change-Id: Ie7019445a7c307dcb2cd47beee47d02e1a82145f
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Tested-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoWindows: Avoid race during cm_FreeServerList
Jeffrey Altman [Tue, 5 Mar 2013 12:52:37 +0000]
Windows: Avoid race during cm_FreeServerList

cm_FreeServerList obtains cm_serverLock exclusively and in some
circumstances will call cm_FreeServer().   cm_FreeServer() will
drop the cm_serverLock if the cm_server_t.refCount is zero in order to
avoid a lock order violation when calling cm_GCConnections() since
cm_connLock is higher in the lock hierarchy.

The call to cm_FreeServer is performed after the cm_serverRef_t
to be deleted is identified but before it is removed from the list.
There is the potential for two threads calling cm_FreeServerList()
to race and for more than one thread to attempt to delete the same
cm_serverRef_t twice.

Fix this by:

1. maintain a private copy of the cm_server_t pointer, delete the
cm_serverRef_t and update the list pointers before calling cm_FreeServer().

2. obtain and release a refcnt on the next cm_serverRef_t to ensure
that it is not deleted out from underneath the thread in case the
cm_serverLock is dropped.

Change-Id: Ia7b6eed66e9ba306c07d47027262e1a8ad1e52ac
Reviewed-on: http://gerrit.openafs.org/9391
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8 years agoaklog: Fix buffer overflows in next_path
Simon Wilkinson [Sat, 2 Mar 2013 12:21:06 +0000]
aklog: Fix buffer overflows in next_path

Use strlcpy and strlcat

Caught by coverity (#985765)

Change-Id: I2fc3d04a762f6872c31fe728e1ab0247ac16e6de
Reviewed-on: http://gerrit.openafs.org/9447
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Tested-by: BuildBot <buildbot@rampaginggeek.com>
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8 years agoaklog: Protect against overflows from cmdline
Simon Wilkinson [Sat, 2 Mar 2013 12:15:22 +0000]
aklog: Protect against overflows from cmdline

The cell, realm and path arrays are populated based on the user's
command line, and xlog_path is populated from their passwd map
entry. Protect against all of these overflowing, by making suitable
use of strlcpy and strlcat.

Caught by coverity (#985764, #985904)

Change-Id: Ia8f1816b010eb2b85b537e156de2b7983e4626ba
Reviewed-on: http://gerrit.openafs.org/9446
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
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8 years agoaklog: Avoid overflows in get_afs_mountpoint
Simon Wilkinson [Sat, 2 Mar 2013 12:09:42 +0000]
aklog: Avoid overflows in get_afs_mountpoint

When working with the fixed length cellname buffer, use
strlcat and strlcpy rather than strcat and strcpy.

Caught by coverity (#985763)

Change-Id: Idfb3a0562d4028f5d1aa134b7ab0b5fa2dd60edb
Reviewed-on: http://gerrit.openafs.org/9445
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
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8 years agoaklog: Fix overflows in auth_to_path
Simon Wilkinson [Sat, 2 Mar 2013 12:04:46 +0000]
aklog: Fix overflows in auth_to_path

In the auth_to_path routine, don't use strcpy and strcat when
working with the fixed length pathtocheck buffer. Instead, use
strlcpy and strlcat to ensure that all string operations fit within
the buffer limits.

Caught by coverity (#985762)

Change-Id: I66ae11e1f49c66574d457fd79e97dd647ac98a73
Reviewed-on: http://gerrit.openafs.org/9444
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agoafsmonitor: Fix theoretical overflow of handler string
Simon Wilkinson [Sat, 2 Mar 2013 12:00:47 +0000]
afsmonitor: Fix theoretical overflow of handler string

Don't do an unbounded copy into the thresh structure's handler
string, in case the caller has passed us a string which is too
long.

Instead, switch to strlcpy for all string copies.

Caught by coverity (#985761)

Change-Id: I80e3d35d7a9a4b57e8efc0cb0c7b2dc12f021063
Reviewed-on: http://gerrit.openafs.org/9443
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8 years agoafsmonitor: Use roken
Simon Wilkinson [Thu, 7 Mar 2013 22:28:12 +0000]
afsmonitor: Use roken

Include the roken.h header, and remove the redundant system
includes from afsmonitor.c

Change-Id: Ia3eb8a7a0bb1e77d928d26cdfc87f818e6791e16
Reviewed-on: http://gerrit.openafs.org/9463
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8 years agoutil: Avoid overflow in GetNameByINet
Simon Wilkinson [Sat, 2 Mar 2013 10:27:47 +0000]
util: Avoid overflow in GetNameByINet

We copy the results of gethostbyaddr into a fixed length buffer
without checking whether they fit. Add a length check, and use
strlcpy to do the copy to make sure we can't overflow.

Caught by coverity (#985912, #985872)

Change-Id: I1e8f0fbb2577199c25201940f54646a4acdbbd37
Reviewed-on: http://gerrit.openafs.org/9393
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agokauth: Don't overflow stack when building username
Simon Wilkinson [Sat, 2 Mar 2013 09:35:01 +0000]
kauth: Don't overflow stack when building username

knfs constructs the userName by combining the clientName.name
and clientName.instance arrays, along with a dot separator. Make
sure that the userName array is big enough to hold these, and
use strlcpy and strlcat just to make sure.

Caught by coverity (#985829)

Change-Id: I75431212c8464861a26546c9e47d13acbff08967
Reviewed-on: http://gerrit.openafs.org/9351
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>

8 years agofs: Fix improper use of readlink
Simon Wilkinson [Fri, 1 Mar 2013 12:08:46 +0000]
fs: Fix improper use of readlink

readlink returns a non-NUL terminated buffer. If we are going to
terminate its response, we need to make sure that there's space to
do so. So the length passed to readlink should be one less than the
real length of the buffer.

Caught by coverity (#985596)

Change-Id: I47081877a54a7b3d99ab8e6ec52d4663acd2eeb6
Reviewed-on: http://gerrit.openafs.org/9328
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Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>