git.openafs.org Git - openafs.git/log

Make OpenAFS 1.8.1

Update version strings for the 1.8.1 release.
(Note that the version number for Windows for the 1.8.1 prereleases was
erroneously 1.8.99xx, when it should have been 1.8.00xx to reflect
"next after 1.8.0-final".)

Change-Id: I2ce32aeae50d80b88cbc3f73f6787e3a15747085
Reviewed-on: https://gerrit.openafs.org/13266
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Update NEWS for 1.8.1

Change-Id: I341cf2a5e02874629ceee2c9e46d4f764e3494fa
Reviewed-on: https://gerrit.openafs.org/13265
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

redhat: actually remove unused AFS::ukernel man page

Commit 278581c24a802834719e0d57f27978321556c9bb (redhat: package libuafs
perl bindings) added swig as a build dependency on RHEL 6+/Fedora 15+ to
build and package AFS::ukernel perl bindings for libuafs.  The man page
for AFS::ukernel is generated from the pod files unconditionally, so
needs to be removed from the staging directories when AFS::ukernel is
not packaged.

Unfortunately, the full path to the staged AFS::ukernel manpage was
not given in that commit, so the rpmbuild will fail on RHEL 5 with
the error:

        RPM build errors:
        Installed (but unpackaged) file(s) found:
        /usr/share/man/man3/AFS::ukernel.3.gz

Fix this error by specifying the full path to the AFS::ukernel man page
to actually remove it when we are not packaging AFS::ukernel files.

[mmeffie: updated commit message]

Reviewed-on: https://gerrit.openafs.org/13257
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit a85aab9dfe7c2ee9e025bc15d849de2dd0a48913)

Change-Id: If81f930bd7e922cd5e71c0d459751d4bbe85c843
Reviewed-on: https://gerrit.openafs.org/13264
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

afs: Stop looking for dcaches on Get*DSlot errors

In various places in the code, we'll be looking for a dslot, calling
afs_GetValidDSlot (or afs_GetUnusedDSlot) in a loop. In a few places,
we currently keep looking for the dslot when we get an error back,
since afs_GetValidDSlot may return successfully for other slots, and
we might find the dslot we're looking for.

This behavior was introduced in a few commits, including:

- commit 2679af76 (afs: Traverse discard/free dslot list if errors)
- commit 00fd34a6 (afs: Handle easy GetValidDSlot errors)
- commit 9a558660 (afs: Cope with afs_GetValidDSlot errors)

This behavior means that if afs_GetValidDSlot/afs_GetUnusedDSlot
returns an error for a particular dcache slot, but other slots are
okay, then we may still find the dcache we're looking for.

However, by far the most common reason that
afs_GetValidDSlot/afs_GetUnusedDSlot fails is because our disk cache
is completely unusable; it is very rare that only a few slots cannot
be used, but others are fine (this would mean that the disk cache was
corrupted in oddly specific ways, or there are small isolated errors
in the underlying disk). So continuing the dcache search in these
situations is not very useful.

On Linux, this is most commonly seen by the underlying disk cache i/o
calls returning -EINTR, which can happen if a SIGKILL signal is
pending for the current process when we try to do the i/o. In this
situation, all attempts to read in a dslot from disk will fail; trying
other slots or waiting will not improve the situation. Depending on
which specific code path encounters an afs_Get*DSlot error, we can
then flood the log with "disk cache read error in CacheItems" messages
emitted from afs_UFSGetDSlot, since we keep calling afs_Get*DSlot in
our loop.

The worst offender of this is usually afs_GetDSlotFromList via
afs_AllocDCache, since we end up calling afs_GetUnusedDSlot for every
single dslot in the free and discard lists. However, our other call
sites that are looking for dcaches for a specific file can still
generate quite a few of these messages, since we'll end up calling
afs_GetValidDSlot for every slot in a dcache hash chain.

So to avoid flooding the log in these situations, change most callers
of afs_GetValidDSlot and afs_GetUnusedDSlot to stop on the first
error, and act like we never found a dcache that we were looking for.

This commit also adjusts one caller in afs_ProcessOpCreate, which was
not handling errors from afs_GetValidDSlot at all, and changes
FlushVolumeData to be able to return error codes.

Reviewed-on: https://gerrit.openafs.org/13034
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 12f4fd2901fee8bf27c2cec97efd3d242c6ff025)

Change-Id: I2a9865e510be39d1b5bcb9280419630036c00bef
Reviewed-on: https://gerrit.openafs.org/13191
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

afs: Make afs_osi_Free(NULL) a no-op

In userspace, we assume that free(NULL) does nothing, which makes
certain cleanup code paths simpler. This may or may not be true for
our free() abstractions that can run in the kernel (like afs_osi_Free,
rxi_Free, etc), which is confusing. To make the higher-level free()
abstractions more consistent, change afs_osi_Free to guarantee that
passing a NULL pointer does nothing.

Reviewed-on: https://gerrit.openafs.org/13236
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 7523397333c0f8c6a08312434968d84b8ff56306)

Change-Id: Ifda1bd8c99f128fe01d38fd64dc19afee4c5158f
Reviewed-on: https://gerrit.openafs.org/13250
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

LINUX: Detect NULL page during write_begin

In afs_linux_write_begin, we call grab_cache_page_write_begin to get a
page to use for writing data when servicing a write into AFS. Under
low-memory conditions, this can return NULL if Linux cannot find a
free page to use. Currently, we always try to reference the page
returned, and so this causes a BUG.

To avoid this, check if grab_cache_page_write_begin returns NULL, and
just return -ENOMEM, like other callers of grab_cache_page_write_begin
do.

Linux's fault injection framework is useful for testing code paths
like these. The following settings made it possible to
somewhat-reliably exercise the relevant code path on a test RHEL7
system:

    # grep ^ /sys/kernel/debug/fail_page_alloc/*
    /sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem:Y
    /sys/kernel/debug/fail_page_alloc/ignore-gfp-wait:N
    /sys/kernel/debug/fail_page_alloc/interval:1
    /sys/kernel/debug/fail_page_alloc/min-order:0
    /sys/kernel/debug/fail_page_alloc/probability:100
    /sys/kernel/debug/fail_page_alloc/space:90
    /sys/kernel/debug/fail_page_alloc/task-filter:Y
    /sys/kernel/debug/fail_page_alloc/times:-1
    [...]

Reviewed-on: https://gerrit.openafs.org/13242
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 89e80c354c404dedc0e5197f99710db0e5e08767)

Change-Id: I37b4d1ebb1b76e435bb1c56a76d7e475f47f33de
Reviewed-on: https://gerrit.openafs.org/13243
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

vldb_check: write mh entry header flags in network order

Commit 6b93ad695e53a86dbe9eea13bd0ff651e1d8c9b7 fixed a false error
reported when the vldb contained more than one mh extent blocks. That
fix changed the readMH() function to convert the flags field to host
byte order of all the mh blocks, not just the first block, in order to
check the value of those flags.

Unfortunately, that commit missed converting non-zero blocks back to
network byte order in the complementary writeMH() function, which is
used to write the data back to disk when vldb_check is run with the -fix
option.

FIXES 134589

Reviewed-on: https://gerrit.openafs.org/13245
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 483cad0121d848836b4155817b86231ef21be27a)

Change-Id: I28afa243c78d0a8a53e13f302d69c17a779837d9
Reviewed-on: https://gerrit.openafs.org/13246
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

redhat: parallel builds

Parallel builds can be an order of magnitude faster. Add the
_smp_mflags macro to all invocations of make in the rpm spec,
to make use of all available cores and SMT threads on the build
system. This should also help noticing new dependency issues
early. Note the macro can be overridden on the rpmbuild command
line.

Reviewed-on: https://gerrit.openafs.org/13240
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit e60766286b7a581dcdd14466884ea7fdcae10918)

Change-Id: I3428e5acc7114a5bf1a1090352055041ef099fbd
Reviewed-on: https://gerrit.openafs.org/13249
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: Benjamin Kaduk <kaduk@mit.edu>

redhat: speed up userland-only rpm builds

When building with --define "build_modules 0", have configure
skip the Linux kernel tests, which are slow and many.

Reviewed-on: https://gerrit.openafs.org/13239
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit ab61bcffefdd0a431a435def193cd9a46e3b8ab6)

Change-Id: I030c4fab62bc8973dd4d914374865569d878090d
Reviewed-on: https://gerrit.openafs.org/13248
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: Benjamin Kaduk <kaduk@mit.edu>

redhat: package new file include/opr/lock.h

Commit 792dd44ac57032a3f2a4743c83c8a0208a08ecec added the
installation of include/opr/lock.h, but the rpm spec fails
to pick it up, making rpm builds fail. Add the new file
to the files list for the -devel package.

FIXES 134579

Reviewed-on: https://gerrit.openafs.org/13238
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit babf419886d687f8359159f35e8b89aff5e166f8)

Change-Id: I32b6737a6868239c56a604030a49cc45f0379707
Reviewed-on: https://gerrit.openafs.org/13247
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: Stephan Wiesand <stephan.wiesand@desy.de>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Make OpenAFS 1.8.1pre2

Update version strings for the first 1.8.1 prerelease.
(This time, for sure!)

Change-Id: I50a1f939f64f0fd78c47c99d4c921d28c00380ce
Reviewed-on: https://gerrit.openafs.org/13231
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Update NEWS for 1.8.1pre2

Change-Id: I5ceba218589aab4f2c3c1874661e2edbb9be0b65
Reviewed-on: https://gerrit.openafs.org/13230
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

rxevent: prevent negative rx_connection refCount

rxi_ChallengeEvent is called directly from rxi_ChallengeOn to start the
first challenge; subsequent calls to rxi_ChallengeEvent are from the
event handler.  When called as an event, we must putConnection the
reference held by the event.  But when called directly for the first
time, the event has not been scheduled yet and so has not taken a
reference on the connection.  For this case, we must not putConnection
or the rx_connection refCount will go negative.

One reported symptom of this bug is a fileserver crash with:
  'Assertion failed! file rx.c, line 1327.'

Introduced by commit 304d758983b499dc568d6ca57b6e92df24b69de8
('Standardize rx_event usage').

Reviewed-on: https://gerrit.openafs.org/13228
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit b1ad473be01162fe9b3835544a835c4dcf0fcb35)

Change-Id: Ice5856627f4f77b5ede3a84fef4b6f2915f5477d
Reviewed-on: https://gerrit.openafs.org/13229
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Make OpenAFS 1.8.1pre1

Update version strings for the first 1.8.1 prerelease.

Change-Id: Iaf262f468d36fb27d4ce8c994483c99bde666aff
Reviewed-on: https://gerrit.openafs.org/13225
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Update NEWS for 1.8.1pre1

Change-Id: I9c443b26cd937b7d7d0d6863ca92792dfacae770
Reviewed-on: https://gerrit.openafs.org/13224
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Comment out missing comerr functions from afsauthent.def

Apparently commit 70c4922980d1596155b4021cd72d6895c2371e23 was overzealous
in making Windows match Unix, as these functions are not available
in the Windows build.

Reviewed-on: https://gerrit.openafs.org/13219
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 9d0b2698ac7ab8bb689f30d819bbef08c05a8bf7)

Change-Id: I6ea04a04a2e18f3a8b7f2fdd0e2ca49f4b208361
Reviewed-on: https://gerrit.openafs.org/13222
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

Comment out opr_AssertionFailed from afsrpc.def

Apparently the Windows utilities link opr.lib directly, so this
caused a "multiply defined symbol" error.

Reviewed-on: https://gerrit.openafs.org/13216
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 907e09ff2b7e86005765a594db27e1df194ec204)

Change-Id: Ibdd1388235086177bd3fec3c1088916d71fc204f
Reviewed-on: https://gerrit.openafs.org/13221
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Comment out (again!) xdr_Capabilities from afsrpc.def

This shows up as an "unresolved external" when linking (though apparently
this error does not cause a buildbot failure), noticed when viewing
a related windows build log.

Reviewed-on: https://gerrit.openafs.org/13215
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 94f1c1e2a7125e93ed49de31522be806af28626b)

Change-Id: Ia3a4977f00a0e4b3e3a9c16b20028d78269c4ce8
Reviewed-on: https://gerrit.openafs.org/13220
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Un-export opr_AssertFailU

It appears to have been created for parity with osi_AssertFailU, but
was then never used.

It is safe to remove the export line, since this export has never
been in a released version of OpenAFS.

Reviewed-on: https://gerrit.openafs.org/13212
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 691757576fb6d60a34fef2c4bc50ae581b65ad76)

Change-Id: I4811d1587fc7a25e90e2a0203d965ef352efe7c5
Reviewed-on: https://gerrit.openafs.org/13214
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

libafsrpc: export more xdr functions

Most of the xdr functions in the library text are to support RXAFS and
RXAFSCB RPCs, which we explicitly do not expose from libafsrpc.
As such, they do not need to be in the export list, but a couple of
generic ones probably should be exported.

Do so, for both Unix and Windows.

Reviewed-on: https://gerrit.openafs.org/13139
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 6e7db633efad1c88bb300089e3bd4c9feaea5f23)

Change-Id: I42ae33f5fdb36401d052cfb200a22aff423ac0a9
Reviewed-on: https://gerrit.openafs.org/13195
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

libafsrpc: export some more rx functions

Reviewed-on: https://gerrit.openafs.org/13138
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 0b1edd96ac7a952148ec14f8baaf60c8d8bbc04f)

Change-Id: I86c81dd95c75953ebd193bd8b49b467693572614
Reviewed-on: https://gerrit.openafs.org/13194
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

Export missing opr functions from libafsrpc

Our assertion macros expand to function calls, and we have assertions
included in macros in installed headers, so the public needs to be
able to link against them.

Export for both Unix and Windows.

Reviewed-on: https://gerrit.openafs.org/13137
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit f01ee714152a0a6247f2f456aa1f0a728d74373c)

Change-Id: I1d983d352f4838619d0b8a833e6be90207dffa87
Reviewed-on: https://gerrit.openafs.org/13193
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

afs: Avoid GetDCache delays on screwy cache

Currently, if our afs_AllocDCache call fails in afs_GetDCache, we
retry once per second for 5 minutes. The reasoning is that we're out
of dcache slots, and so if we wait a little while, maybe something
will become freeable and we can continue.

However, afs_AllocDCache can also fail if we have plenty of free
dslots, but we are unable to successfully call afs_GetUnusedDSlot() on
any of them. This can happen if our disk cache is screwed up, and so
waiting and retrying will not make things better (but we'll spew a ton
of "disk cache read error in CacheItems slot" errors in the log each
time, and do so 300 times).

So instead, only do our sleep/retry loop if we actually appear to be
out of free or discarded dslots. Otherwise, just return an error
immediately, since sleeping and retrying will not make anything
better.

Reviewed-on: https://gerrit.openafs.org/13033
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit bec329c1c81d96b5933527f7cdb3638f24833087)

Change-Id: Iaee53eca133985ad5964b61b3641cd8ad2802014
Reviewed-on: https://gerrit.openafs.org/13190
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

afs: Avoid GetDCache panic on AllocDCache failure

Currently, in afs_GetDCache, if afs_AllocDCache fails, we retry for 5
minutes and then panic. Panicing in this situation is completely
unnecessary; afs_GetDCache can fail for a variety of other mundane
reasons (such as, if we can't fetch the requested data from the
relevant fileserver).

It may seem unusual for afs_AllocDCache to fail for over 5 minutes
(this is supposed to mean that we're out of dslots, and our attempts
to free up dslots have failed). However, afs_AllocDCache can also fail
if we are having issues in accessing the disk cache, and so we may not
be out of cache space or dslots at all; we just can't access the
cache. In this case, afs_AllocDCache can easily fail forever; waiting
longer or trying to free up cache space isn't going to help.

So, to avoid panicing in such situations, just make afs_GetDCache
return an error. We just need to make sure afs_xdcache is unlocked,
and then we can just jump to 'done', like plenty of other codepaths
do; no extra cleanup is required.

Also since we are removing a panic, add a log message when this
situation happens, so EIO errors don't suddenly pop up silently.

Reviewed-on: https://gerrit.openafs.org/13032
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 0ff2364bd5e68c0a7587f8fbc552bf20b99d7039)

Change-Id: Ie29eed271b490edc943929710a87550e2d67b735
Reviewed-on: https://gerrit.openafs.org/13189
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

xdr: remove dead code, whitespace from xdr_enum

The 'enum sizecheck' declaration has been unused since openafs-ibm-1_0; it is
apparently vestigial from the original XDR code. Remove it, along with some
extraneous whitespace.

No functional change is incurred by this commit.

Reviewed-on: https://gerrit.openafs.org/13076
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit fdc8adbf0904cbbc0590379c5cb702a15273b40c)

Change-Id: Ie586f210d17169a03143d1bdebb8430e3881e58c
Reviewed-on: https://gerrit.openafs.org/13184
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

xdr: avoid xdr_enum memory overrun

Since openafs-ibm-1_0, xdr_enum has used xdr_long to read and write, even
though enum_t is defined as int.  For systems where sizeof(int) ==
sizeof(long), this works by accident.  But other systems (e.g., DARWIN
ARCHFLAGS=x86_64) xdr_enum will overrun its int-sized second parameter.  For
XDR_DECODE, this results in memory corruption.

This was first noticed with OpenAFS 1.8.0 on macOS 10.13; if aklog is issued
while already holding a token, it will fail in token_SetsEquivalent with a
segfault in decodeToken.  The root cause is that the address passed to
decodeToken had been overwritten by a previous call to tokenType -> xdr_enum ->
xdr_long.

Instead, modify xdr_enum to use xdr_int for its work.

Reviewed-on: https://gerrit.openafs.org/13075
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit eb1d2ef203a2a99c908b3b89d9ea8337a91b944b)

Change-Id: I548ab43fe4513262b6be0608be45bfd8580e6ed8
Reviewed-on: https://gerrit.openafs.org/13183
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

util: check for trailing characters in partition names

The function which maps partition names to partition ids currently
ignores trailing characters in the partition names. For example, the
partition name "/vicepbogus" is currently considered a valid partition
name ("/vicepbogus" maps to "bo" which is id 66). Although this is not a
regression, it is problematic for several reasons.

Firstly, this can lead to duplicate partition ids on the server, for
example "/vicepbad" and "/vicepbar" both map to the same partition id
("ba" is id 52).

Second, partitions are internally tracked by numeric id. The partition
names are generated from numeric ids when reporting partition names.
This means the trailing characters are lost when reporting the partition
names. For example, vos reports the attached partition "/vicepbad" as
"/vicepba".

Third, it could be possible (but perhaps unlikely) in the future to
extend the range of partition ids, so the trailing characters could
become significant at that time.

Finally, it could be confusing to admins that such partition names are
attached by the fileserver. For example, "/vicepaa-backup" is attached
and is used by the fileserver as partition id 26.

This change adds a check for trailing characters in partition names in
the volutil_GetPartitionID function, so it is more strict in what it
accepts as a valid partition name. That function will now return -1
(illegal partition name) when trailing characters are found in
partition names.

Reviewed-on: https://gerrit.openafs.org/13039
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
(cherry picked from commit 850c7c50dccbdebb8e0a44da4fc7840760d9e02d)

Change-Id: I1244630f3b31408f9f723b97956dca6987dd9747
Reviewed-on: https://gerrit.openafs.org/13121
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

autoconf: add kernel module to the summary

Add the kernel module to the list of optional build items in the
configure summary to indicate whether the kernel module build is
enabled.

Reviewed-on: https://gerrit.openafs.org/13005
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 3d3e7bc51aaf39b5ca04bfd36ff9017ab0622057)

Change-Id: I842752bb12b09fdcab6bfb341673bff3528f3880
Reviewed-on: https://gerrit.openafs.org/13112
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

libafsauthent: export additional xdr_ functions

Formally, we need to use xdr_free to deallocate storage for RPC output
variables, in case the XDR stack uses a different allocator than the
standard application allocator. Some types have non-autogenerated
wrappers exposed already (e.g., token_FreeSet()), but for a handful of
the base ptint types we need to expose the xdr routines in order for a
safe way to deallocate their storage to be available.

Reviewed-on: https://gerrit.openafs.org/13131
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit c12cfd7331727142cb928e08ec32a708d0cfd1e9)

Change-Id: Iea3b0bd9fdb373020b41c2bcbf1ebbde222114a8
Reviewed-on: https://gerrit.openafs.org/13192
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

libafsauthent: export ugen_ClientInit*

Windows was only exporting the bare version and not the Cell/Flags/Server
versions; Unix was exporting none of them.

These routines for obtaining a ubik client are more generic than the
historical (and already exported) ubik_ClientInit routine, allowing for
the use of an alternative configuration directory, additional flags,
and the like.

Reviewed-on: https://gerrit.openafs.org/13130
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit ef6a1e8118a25b885889179739a3539a598068bc)

Change-Id: I04c6565cc4b9c3366bf15b86cd5f70402609c5c5
Reviewed-on: https://gerrit.openafs.org/13182
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

libafsauthent: Export more token-manipulation functions

For both Windows and Unix.

Reviewed-on: https://gerrit.openafs.org/13129
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 1974eac772157651594c1b76ea8f55e4567b3ec5)

Change-Id: I7b26772fe9f447ac1cf562eb5837a6035d8f0175
Reviewed-on: https://gerrit.openafs.org/13181
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

libafsauthent: export ktc token 'Ex' routines for Unix

We need these to handle the modern identity structures (they are
already exported on Windows).

Reviewed-on: https://gerrit.openafs.org/13128
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 4008f83ca80c5ed7b612a13f760b4bb8b9866f2b)

Change-Id: I05d4ea37212738db6be9dace0b9cc1db1e76bd08
Reviewed-on: https://gerrit.openafs.org/13180
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

libafsauthent: export more afsconf_ functions

We have new functions for (among other things) typed keys, and generic
rx identity management; expose them as well as the legacy key- and user-
management functions, on both Unix and Windows.

Reviewed-on: https://gerrit.openafs.org/13127
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit cdd1f16f5ef52093a8f7d3f87a45775d3c87b780)

Change-Id: Ia9ab364fcac10822ba50eb7f418a2228ac0fd935
Reviewed-on: https://gerrit.openafs.org/13179
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Synchronize libafsauthent afsconf_ exports with windows

The Windows library was exporting several more afsconf_* symbols
than the Unix one; bring them into sync.

Reviewed-on: https://gerrit.openafs.org/13126
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit bcce41bd99b4361631b64cf4749d1dcf80df1cd7)

Change-Id: I4993395d30ca93d28e0ccd4c6ad52975a1e23324
Reviewed-on: https://gerrit.openafs.org/13178
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

autoconf: remove uss from configure summary

Commit 00a33b26d74aa067086ddc340efb82184715857f (uss: always build uss)
made the uss build unconditional. Remove it from the list of optional
items in the configure summary.

Reviewed-on: https://gerrit.openafs.org/13004
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 85e9db22b265f9bb3745246fea3a07158b8a8c0e)

Change-Id: I345752f0739edc3d621b39a50157adb23923e256
Reviewed-on: https://gerrit.openafs.org/13111
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Joe Gorse <jhgorse@gmail.com>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Remove pointless assignments

scan-build identified these var assignements as being unused or redundant.

Reviewed-on: https://gerrit.openafs.org/13086
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit e71985bce593e9dba43443e084eb726fcc5259e3)

Change-Id: Ic93c5e775f13a8f75ba619391d71cb78f4dc06ae
Reviewed-on: https://gerrit.openafs.org/13150
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: PatRiehecky <jcpunk@gmail.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Add braces to empty conditional blocks

GCC 7+ is able to quickly optimize away empty if/else blocks if the braces are
provided. While this adds some additional syntax, it should also result
in faster optimization, so change our empty blocks after conditionals to use
braces.

FIXES 134377

Reviewed-on: https://gerrit.openafs.org/13081
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit a411366f57dcf39cc17b6d61d8332e520dff57d1)

Change-Id: I9243105d75878487ec965070d3946e8d683f264b
Reviewed-on: https://gerrit.openafs.org/13149
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: PatRiehecky <jcpunk@gmail.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Convert extended character set to unicode

Reviewed-on: https://gerrit.openafs.org/13088
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 9670937d5f12f1edc7bdcb588133f53ec1af2d6f)

Change-Id: I8ba39f92dd485cf8b12fc99cf4251277b29e403d
Reviewed-on: https://gerrit.openafs.org/13152
Reviewed-by: PatRiehecky <jcpunk@gmail.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Windows: define AFS_IHANDLE_PIO_ENV for ihandle pio

Support for positional i/o in the ihandle package was added to the
windows platform in commit 50b6a116a1c412d0e6d7442d13d6e92c9dbb35ee
using native windows functions. That commit also defined HAVE_PIO in
the windows version of the afsconfig.h file. Unfortunately, that
definition of HAVE_PIO is not limited to the ihandle package.

Remove the project-wide HAVE_PIO definition from the windows afsconfig.h
file and define the new AFS_IHANDLE_PIO_ENV symbol when position i/o
support is available in the ihandle package.

Build the fallback ih_pread and ih_pwrite functions (which use lseek)
only when positional i/o is not available in the ihandle package for the
current platform.

Use AFS_IHANDLE_PIO_ENV instead of HAVE_PIO in ih_open() to determine
when it is is safe to share ihandles among threads.

Reviewed-on: https://gerrit.openafs.org/12270
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 759f29cfdfabed4dc5c1b96a0b2b79a3f83c08e3)

Change-Id: Ic64f9e65b10fbe6f7650eff852d5a7e20762ef10
Reviewed-on: https://gerrit.openafs.org/13148
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

ptserver: improve PR_GetHostCPS logging

The IP address of the host is logged as a signed number. Instead, log
it as the unsigned (and hex) representation of the host IP addr.

Reviewed-on: https://gerrit.openafs.org/13043
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 8225518cd08b810bf3d8c74e27e3d3a753b6b30b)

Change-Id: Idbb380fa0c9d71398ea2d47ba49fd217be9f9f26
Reviewed-on: https://gerrit.openafs.org/13147
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

vol: check for bad partition names

Currently, servers attempt to attach any partition name starting with
"/vicep", even partition names which map to out of range partition ids.
Examples of such misnamed partitions are "/vicepzz", "/vicep0", and
others.

The presence of these misnamed partitions cause the server processes to
crash on startup, since the out of range partition ids are used as an
index.

Add a check for the bad partition names in VCheckPartitions to avoid
attaching them. Log a warning for such partitions to let the admins know
why the partitions are not attached.

Reviewed-on: https://gerrit.openafs.org/13038
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit c0f2c26e9298d12209fbb5e523ea3173202316e5)

Change-Id: Id7dcbd80402b7c8ec1f0e2e5fa2ea0123a2da898
Reviewed-on: https://gerrit.openafs.org/13120
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

viced: SRXAFS_InlineBulkStatus set InterfaceVersion on error

AFSFetchStatus.InterfaceVersion is required to be "1" for any
of the fields in the structure to be considered valid.  Therefore,
InterfaceVersion must be set to one when returning an 'errorCode'
value.

When RXAFS_InlineBulkStatus was introduced by OpenAFS in
362d26c733b086d26f013bd229af979a112098f5 not only wasn't
InterfaceVersion set but neither was the memory allocated
to OutStats initialized.  As a result the InterfaceVersion field
value could be not only zero but random.  The OutStats memory
was initialized to zeros beginning with
726e1e13ff93e2cc1ac21964dc8d906869e64406.

Reviewed-on: https://gerrit.openafs.org/13067
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit f045de21a45fcc8f71e2b30e826c22c8a7b4d0f2)

Change-Id: I0d15147081f6e8744680c16e43b22075070647e4
Reviewed-on: https://gerrit.openafs.org/13117
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

ubik: clones should not request votes

Clones should not be able to become the sync-site. To make it possible,
regular sites do not vote for a site tagged as clone. In other words,
the clones ask for votes but they cannot be the sync-site. Knowing that
their requests for votes should be refused by the regular sites, they
should never have enough votes to win the election.

In addition to the unnecessary network traffic created by these
unnecessary requests, this current approach can be problematic in some
specific situations. As an example, consider the following scenario:

    The user wants to turn a regular site, called host1, into a clone.
    To do so, he runs the following commands on every single server:

    $ bos removehost -server <server> -host host1
    $ bos addhost -server <server> -host host1 -clone

After that, he restarts the servers, one by one. Depending on the delay
between the restarts, a clone can become the sync-site. This is possible
because the clones request votes from the other sites. If enough regular
sites are not aware (yet) that the request for vote came from a clone,
the clone in question can get enough votes to win the election.

To fix the problems mentioned above, do not request votes if you cannot
be the sync-site.

Reviewed-on: https://gerrit.openafs.org/12654
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 3cc22a442e1dad628f0b11a32c4037fc7174dde4)

Change-Id: Ifa748546aec6928eb4ca988a036d0bf8fb70f6f8
Reviewed-on: https://gerrit.openafs.org/13116
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

afs: alloc openafs_lck_grp before osi_Init() on darwin

Commit a27bed59cae1a4244429c752edfde0a8363c8a3b moved init_hckernel_init
to osi_Init. On Darwin (AFS_DARWIN80_ENV), MUTEX_INIT
(called by init_hckernel_init) uses openafs_lck_grp as the argument of
one of the functions called during the initialization of the mutex in
question. Since openafs_lck_grp was not allocated yet, we crash.

To fix this problem, call MUTEX_SETUP() before osi_Init() on Darwin.

Reviewed-on: https://gerrit.openafs.org/13065
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 8e740aed774d4507e656e6ae743f6c6fe6c0e356)

Change-Id: Ic1c58b5e2baeedd1cd24c364dd2907761064c8a9
Reviewed-on: https://gerrit.openafs.org/13115
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Use afs_DestroyReq in afs_PrefetchNoCache()

Since commit 76ad941902c650a4a716168d3cbe68f62aef109f we use afs_DestroyReq()
instead of osi_Free() directly.

Also update the UKERNEL version of the function to afs_CreateReq() properly.

FIXES 134533

Reviewed-on: https://gerrit.openafs.org/13060
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 3ec0414f769c37a19410fbd9aefb086cb5b69e55)

Change-Id: Ic85fef48f7adb2a152b5cb4d68b8c4a43c45c06a
Reviewed-on: https://gerrit.openafs.org/13114
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Export {Get,Set}ServiceSpecific from liboafs_rx.la

rxgk will use service-specific data.

Reviewed-on: https://gerrit.openafs.org/10589
Reviewed-by: Daria Phoebe Brashear <dariaphoebe@auristor.com>
Reviewed-by: Chas Williams <3chas3@gmail.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 60a006bdc43df42e40eb43f1e1af7fffe3e85763)

Change-Id: I997a6dc9ab728e9e87df321c30d0a26ce2853698
Reviewed-on: https://gerrit.openafs.org/13108
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Add missing va_end

Per man va_start:
Each invocation of va_start() must be matched by a corresponding
invocation of va_end() in the same function.

Reviewed-on: https://gerrit.openafs.org/13087
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 2b08d687b992f238fa59773ef2ff1710c520f861)

Change-Id: I8d649b06a8e0baedc40612fe7b2251df1426ce26
Reviewed-on: https://gerrit.openafs.org/13151
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: PatRiehecky <jcpunk@gmail.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Export afs_getDirPath from shared libraries

Add this function to the export list for libafsauthent on Windows
and Unix.

Reviewed-on: https://gerrit.openafs.org/13059
Reviewed-by: Anders Kaseorg <andersk@mit.edu>
Tested-by: Anders Kaseorg <andersk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 849ddd4fde0759e385cf3ed4054fc11c36a62fc3)

Change-Id: I39dd95185a705eaf96852e7bae9acbb5f5c50159
Reviewed-on: https://gerrit.openafs.org/13146
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Rename getDirPath to afs_getDirPath in preparation for export

The symbol name getDirPath is rather generic and we probably shouldn't
squat on it in the application's namespace. In preparation for exporting
this functionality from the Unix shared libraries, rename it to
afs_getDirPath.

Retain a Windows-only wrapper getDirPath that can continue to be
exported from libafsauthent on Windows, for ABI compatibility.
New consumers should use afs_getDirPath.

Reviewed-on: https://gerrit.openafs.org/13058
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Anders Kaseorg <andersk@mit.edu>
Tested-by: Anders Kaseorg <andersk@mit.edu>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 554c38473d1465af4c4613209229c274807fffd8)

Change-Id: If527d3f6d619e8bc41914353d28d5d74cb683637
Reviewed-on: https://gerrit.openafs.org/13145
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Remove duplicates from liboafs_util.la.sym

Remove the extra copy of things which appeared twice.

Reviewed-on: https://gerrit.openafs.org/13057
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Anders Kaseorg <andersk@mit.edu>
Tested-by: Anders Kaseorg <andersk@mit.edu>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit b48fe6b57f13bacb368e27389ccd3f9c279822da)

Change-Id: I322967df048cb49d270cc149d6b710a38797cbbf
Reviewed-on: https://gerrit.openafs.org/13144
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Export ubik_PR_ symbols from libafsauthent

Also export from liboafs_prot the ones missing from this set.

This brings the unix exports in sync with the Windows exports
(of ubik_PR_ symbols), and is tested as being sufficient to compile
python-afs.

Reviewed-on: https://gerrit.openafs.org/13056
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Anders Kaseorg <andersk@mit.edu>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 3be1de0e823db7068e27b9c5c30a91673f058e52)

Change-Id: I2cd44eb5686b1b7134eb0e4480f5f3502e865ce8
Reviewed-on: https://gerrit.openafs.org/13143
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Export comerr initialization functions from libafsauthent

Add to the libafsauthent export symbol list these comerr initialization
functions so that they are usable by consumers.

Reviewed-on: https://gerrit.openafs.org/13055
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Anders Kaseorg <andersk@mit.edu>
Tested-by: Anders Kaseorg <andersk@mit.edu>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 70c4922980d1596155b4021cd72d6895c2371e23)

Change-Id: I7fb91b14c0730abd8544ff0484af8746c2bb50db
Reviewed-on: https://gerrit.openafs.org/13142
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

opr: install afs/opr.h and opr/lock.h

These headers are (transitively) referenced from rx_pthread.h, which is pulled
in from rx.h when AFS_PTHREAD_ENV is defined. As such, we are presenting an
incomplete public API without this header.

Reviewed-on: https://gerrit.openafs.org/13054
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Anders Kaseorg <andersk@mit.edu>
Tested-by: Anders Kaseorg <andersk@mit.edu>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 792dd44ac57032a3f2a4743c83c8a0208a08ecec)

Change-Id: I9785e4d408b2838a2c65ae372717a6c92e38767b
Reviewed-on: https://gerrit.openafs.org/13141
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

ubik: remove redundant memset from udisk_write

When udisk_write is extending the database, DRead will return a null
buffer. udisk_write then calls DNew to get a brand new buffer for the
extension write, and clears it with memset. However, this is redundant,
since DNew has already cleared the new buffer.

Remove the redundant memset.

No functional change should be incurred by this commit.

Reviewed-on: https://gerrit.openafs.org/12621
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 845c8927ef20e245bb88bc783dc2e581b61fbaba)

Change-Id: I58d4052c69c16e4758c6accfbb2a0b1ac2aa413f
Reviewed-on: https://gerrit.openafs.org/13124
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

ubik: Make udisk_Log* functions static

Nothing uses the udisk_Log* functions outside of disk.c. Declare these
static to make sure they stay that way, to make it easier to change
their semantics.

Reviewed-on: https://gerrit.openafs.org/13069
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit f1d389e80367c7ea532441f9aa27a6cc3e2853a7)

Change-Id: I9c1cae678fc099f1eabe4aa6a661dcbc4ea72648
Reviewed-on: https://gerrit.openafs.org/13119
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

ubik: Remove 'mtime' from ubik_stat

Nothing uses the 'mtime' field from ubik_stat. Remove it.

Reviewed-on: https://gerrit.openafs.org/13068
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit b8617f08d1bf57a6b3fbba44e5b4de24dc84a9bb)

Change-Id: I1770e55aa45192b4bab6d4256be562cb308fd03a
Reviewed-on: https://gerrit.openafs.org/13118
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

afs: fix broken volume callbacks (e.g. vos release)

Commit e99bfcfaa3bca3e65f03928718c2c9eb5eff7c8c ('afs: use jenkins hash
for dcache, vcache tables') introduced new hashing implementations for
the dcache and vcache hash tables. Unfortunately, a typo introduced a
bug into the VCHashV hash function; instead of hashing by volume id, it
currently hashes by vnode.

The most common symptom is that volume callbacks (RXAFSCB_Callback with
fid <volid>:0:0) fail to find and invalidate all the files for the
specified volume. This typically manifests as persistent stale RO
content after a 'vos release' for new RW content.

This bug only affects the Unix cache manager; the Windows cache manager
implementation of RXAFSCB_Callback was unaffected.

Reviewed-on: https://gerrit.openafs.org/13090
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 1dc9bb4e7362029db073250f23a09f949e1655de)

Change-Id: I535f91630948e7aa6a8d72eb37e0cce88c33156d
Reviewed-on: https://gerrit.openafs.org/13140
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

BSD: Work around panic in FlushVCache

Commit 64cc7f0ca7a44bb214396c829268a541ab286c69 created the very useful
afs_StaleVCache() helper function, but unfortunately it also introduced
a subtle change into how we check for whether a vcache may be a directory.
Previously, we just used the low bit of the Fid's Vnode number, since files
have an even number and non-files an odd number.  The new version uses
that check but also explicitly checks `vType(avc)` against VDIR, and this new
check involves consulting information stored in the associated vnode entry,
not the vcache directly.  The afs_FlushVCache() implementation for
XBSD and DARWIN NULLs removes the cross-linkage between vcache and vnode,
so that AFSTOV(avc) becomes NULL.  Just a few lines later, it calls
afs_StaleVCacheFlags(), at which point vType() dereferences a bad pointer
(offset from a NULL pointer) and panics.  This would happen during shutdown,
or other periodic reclaim/flush events that can be scheduled.

Reviewed-on: https://gerrit.openafs.org/13014
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 54e84a98f9747bb5bb2ad4b8031115ad7684c914)

Change-Id: I810f72e0be8ab98ea6b4ac05c23bc0cb44e4da3a
Reviewed-on: https://gerrit.openafs.org/13113
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

autoconf: remove more linux 2.4 references

Remove old linux 2.2 and 2.4 references in the autoconf macros left over
from the linux 2.2 and 2.4 days.

Reviewed-on: https://gerrit.openafs.org/13003
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 833a81eeda6e48ea1ced92169434e843d054c44d)

Change-Id: I3bf407ec084d911cc826b50fc39f48a20eb0fd77
Reviewed-on: https://gerrit.openafs.org/13110
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

autoconf: remove check for lorder

Currently, lorder is not being used. Remove the conditional that checks
if this binary exists.

Reviewed-on: https://gerrit.openafs.org/12981
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 1a0d68676526a5031d7f06f44d58c6dbb2b65da7)

Change-Id: I3630b6ec9629361e86971ff0c37d93327f6763f4
Reviewed-on: https://gerrit.openafs.org/13109
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

ubik: death to orphaned signals

ubik has a few very old "orphaned" LWP events that are signalled via
LWP_NoYieldSignal, but have no matching waits (LWP_WaitProcess).

Each "signal" runs the LWP waiting element list for each LWP on the
blocked queue; this may add up to substantial wasted overhead on a
heavily loaded ubik server.

Remove the orphaned signals.

No functional difference should be incurred by this commit.

Reviewed-on: https://gerrit.openafs.org/12620
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit e4c7321560acf0bd34eeee7d46269818d82fdb44)

Change-Id: I4303542683aaa62895b73a5ea93bc3d0ac82804a
Reviewed-on: https://gerrit.openafs.org/13123
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Suppress statement not reached warnings under Solaris Studio

Solaris Studio issues warnings for statements which can not be reached,
such as statements following an infinite loop.  For example, the return
statement will generate a 'statement not reached' warning in the
following code:

    while (1) {
       /*  no breaks or gotos in this body */
    }
    return 0;

Suppress these warnings by conditionally removing such statements when
building under Solaris Studio.

Reviewed-on: https://gerrit.openafs.org/12958
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit f47cb2d4a957910c3e7d4b755f41ddef5dd103c5)

Change-Id: I3ac84edbc18d7b6aebd568e9a1c4a3e47aba5512
Reviewed-on: https://gerrit.openafs.org/13107
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

afs: squash empty declaration warning

Remove spurious semi-colon which generates a warning when
building under Solaris Studio.

"./src/afs/UKERNEL/sysincludes.h", line ...: warning: syntax error: empty declaration

Reviewed-on: https://gerrit.openafs.org/12957
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 306f0f3100e453e165032ae3bc9022b4a9a9a4c5)

Change-Id: Ie6657ab06c8d44b1452d9583908efd1596311971
Reviewed-on: https://gerrit.openafs.org/13106
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

libafs: git ignore build artifacts on Solaris

Ignore build artifacts generated when building the kernel
module for Solaris:

src/libafs/inet
src/libafs/nfs
src/libafs/ufs

Reviewed-on: https://gerrit.openafs.org/12955
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit e0066095e7f74653c2c08d1b00010ba59f4c2cf3)

Change-Id: I5b25a5a4ef6a3b2134daaf848fef9d64b01ee156
Reviewed-on: https://gerrit.openafs.org/13105
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Export a few krb5 routines for rxgk

We need oafs_h_krb5_generate_random_block when generating random
keys and oafs_h_krb5_crypto_fx_cf2 for CombineTokens.
Having oafs_h_krb5_crypto_prf_length proves very convenient for
key derivation of transport keys, so move it to the public header
and export it.
oafs_h_krb5_enctype_keysize is needed so that we can tell whether or not we
need to pass through random_to_key() when making rxgk_keys.
oafs_h_krb5_random_to_key is needed for that random_to_key() operation.

Reviewed-on: https://gerrit.openafs.org/10936
Reviewed-by: Chas Williams <3chas3@gmail.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 348dc87bb2eeb66d1e683dc91ee36724ee18f1af)

Change-Id: I3ae0f5ba6b0bd2f851f4d41f756521153e303102
Reviewed-on: https://gerrit.openafs.org/13104
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

auth: Let superuser identities be superusers

We have a special rx_identity_kind for superusers, let it actually
be useful for something.

Reviewed-on: https://gerrit.openafs.org/10575
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit fe8a1f3a2b669057451cac358faa7320722dc053)

Change-Id: I36b6b6be6851c45b13c41e751e4d741cd0130fdb
Reviewed-on: https://gerrit.openafs.org/13103
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Avoid libtool 'nm' errors

Starting around Solaris 11.3, '/usr/bin/nm -p' starts reporting some
symbols with the 'C' code. libtool cannot handle this (libtool bug
#22373), which causes global_symbol_pipe in the generated libtool
script to be empty. This causes a rather confusing error when we go to
actually use libtool to link something ("syntax error near unexpected
token '|'"; see libtool bug #20947), and prevents the build from
continuing.

Address this in two ways:

For all Solaris 11 builds, default to /usr/sfw/bin/gnm over
/usr/bin/nm. This avoids any interop issues with libtool and nm, since
libtool of course works very well with GNU tooling.

In addition, try to catch any nm-related errors with libtool at
configure time, to provide a more helpful error message.

To implement these changes, create a wrapper around LT_INIT, called
AFS_LT_INIT.

Reviewed-on: https://gerrit.openafs.org/12945
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 3e9ea6107973ccc4fa3d405f5b5d76666bfd624f)

Change-Id: I4a5a358857ec5bfbc31cd99fcca59f3390ad4d16
Reviewed-on: https://gerrit.openafs.org/13066
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Remove warning "find_preferred_connection: no connection and !create"

find_preferred_connection() is called with !create via
afs_ConnByHost->afs_ConnBySA to determine if there is a cached
connection available. Don't warn, as it will next be called with the
create flag to create the connection anyway.

Reviewed-on: https://gerrit.openafs.org/12964
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 909d8358109445fdb316b68a8e55e17626cf17c9)

Change-Id: If2cb4fd25e98f5bbdde00f76e8b3850c53cb6358
Reviewed-on: https://gerrit.openafs.org/13025
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

rx: fix atomics on darwin

As described by commit b2a21422129ca1eeeb5ea1a1f7b08b537fd2a9f7, the API
used for atomic operations in kernel space is not the same as the one
used in user space. To fix this problem, the commit mentioned above
introduced macros to correct the name of these functions in kernel space.
Unfortunately, the return value of the functions used in kernel space is
not the same as the ones used in user space. Generally speaking, the
kernel space atomic functions return the original value of the variable
received as an argument before the operation in question. On the other
hand, the user space atomic functions return the new value, after the
operation has been performed. To fix this problem, this commit provides
a new set of inline functions (only used in kernel space) with the
expected return values.

Also, in order to get the inline implementations of the OSAtomic
interfaces in terms of the <stdatomic.h> primitives, commit
74f837fd943ddfa20d349a83d6286a0183cb4663 defines OSATOMIC_USE_INLINED
on OS X 10.12. However, the definition of this macro only affects the
user space legacy interfaces for atomic operations. The kernel space
interfaces for atomics are not deprecated and OSATOMIC_USE_INLINED does
not affect these functions. To fix this problem, only define
OSATOMIC_USE_INLINED in user space (OS X 10.12+).

Reviewed-on: https://gerrit.openafs.org/13063
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit c16423ec4e678e5cb01dc99f4115065f8ef6caf7)

Change-Id: Ic3ecc1f26a9e81eb0dc6e1503845be57ad80498a
Reviewed-on: https://gerrit.openafs.org/13084
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

SOLARIS: Check for map_addr() without 'vacalign'

Add a configure check to see if the map_addr() function contains the
'vacalign' argument or not. The argument was removed sometime around
Solaris 11.4.

Reviewed-on: https://gerrit.openafs.org/12947
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 00e12efa29659c28f0fd7b6acbfb57d91a6ca477)

Change-Id: I141ad3c54b2aa3e32311785f4320eba04d840bb2
Reviewed-on: https://gerrit.openafs.org/13102
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

hcrypto: Avoid arc4random in kernel

Our HAVE_ARC4RANDOM symbol represents the availability of arc4random()
in userspace, not in the kernel. On Solaris, we'll define
HAVE_ARC4RANDOM, but the built kernel module will be unusable, since
we cannot resolve the arc4random symbol.

To to avoid this, undef HAVE_ARC4RANDOM when building hcrypto for the
kernel, just like we do with HAVE_GETUID.

Reviewed-on: https://gerrit.openafs.org/12946
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 6082243e42525c738239fe429bcb64e0e4f22207)

Change-Id: I41c4c6f65581aee3d53a7c4b8f6c108f88631e3f
Reviewed-on: https://gerrit.openafs.org/13101
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

venus: convert fs.c to safer string functions

Convert string handling to safer functions to avoid buffer overflows.

Reviewed-on: https://gerrit.openafs.org/12923
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 5a8b68153124c3a9224f0b6993df9de9c6c54541)

Change-Id: Ic7fd4c3c0ffd4b0b38b9735002e9bf8eba8fd0d6
Reviewed-on: https://gerrit.openafs.org/13100
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

venus: fix format overflow warning

Recent versions of gcc generate a format overflow warning on the dfstring
buffer in fs.c.  Increase the size of the buffer to avoid a possible buffer
overflow.

    fs.c: In function ‘AclToString’:
    fs.c:770:30: error: ‘%s’ directive writing up to 1024 bytes
    into a region of size between 13 and 23 [-Werror=format-overflow=]
      sprintf(dfsstring, " dfs:%d %s", acl->dfs, acl->cell);
                                  ^~
    fs.c:770:2: note: ‘sprintf’ output between 8 and 1042 bytes into
    a destination of size 30
      sprintf(dfsstring, " dfs:%d %s", acl->dfs, acl->cell);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Reviewed-on: https://gerrit.openafs.org/12917
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit c84f36a9b8c6b6adb9c77bab1c814ccd3aaf6a5b)

Change-Id: I05bef3e09455377364a014b41de1e047f5322c8b
Reviewed-on: https://gerrit.openafs.org/13099
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

butc: convert butc/dump.c to safer string handling

Convert butc/dump.c to safer string handling functions to avoid buffer
overflows.

Reviewed-on: https://gerrit.openafs.org/12922
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 70b7f743550a8ce02292a12c4188deaf85b1a533)

Change-Id: I7a062663b5ac2ab0000fe176c7bfdf3896cfb782
Reviewed-on: https://gerrit.openafs.org/13098
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

butc: fix format overflow warning

Recent versions of gcc generate an overflow warning in the butc DUMPNAME macro
when copying values into the finishedMsg1 buffer. Increase the size of the
destination buffer to avoid a possible buffer overflow.

    dump.c:88:24: error: ‘%s’ directive writing up to 63 bytes into
    a region of size 50 [-Werror=format-overflow=]
          sprintf(dumpname, "%s (DumpId %u)", name, dbDumpId);
                            ^
    dump.c:1294:5: note: in expansion of macro ‘DUMPNAME’
         DUMPNAME(finishedMsg1, nodePtr->dumpSetName, dparams.databaseDumpId);
         ^~~~~~~~
    dump.c:88:6: note: ‘sprintf’ output between 12 and 84 bytes into
    a destination of size 50
          sprintf(dumpname, "%s (DumpId %u)", name, dbDumpId);
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    dump.c:1294:5: note: in expansion of macro ‘DUMPNAME’
         DUMPNAME(finishedMsg1, nodePtr->dumpSetName, dparams.databaseDumpId);
         ^~~~~~~~

Reviewed-on: https://gerrit.openafs.org/12916
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit cec45d59440f55316097cfd6652d2ea26cd55233)

Change-Id: I9f3b284d4a32b868091986964af128ed9b3557fd
Reviewed-on: https://gerrit.openafs.org/13097
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

RHEL: Add aarch64/arm64 to spec file

Reviewed-on: https://gerrit.openafs.org/12911
Tested-by: Andrew Deason <adeason@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 3ddae7d168ac08c46b4e31517fdb1f6ac1ae63ac)

Change-Id: Iabbdac7b2ca9e5d066db08dd871203ae341538af
Reviewed-on: https://gerrit.openafs.org/13096
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: PatRiehecky <jcpunk@gmail.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Add support for arm64_linux26

Add support for the arm64/aarch64 architecture on Linux 2.6+. The
param header file is mostly combined from arm and amd64.

Note that the code for syscall interception has not been updated for
arm64, so this will not build on arm64 without support for kernel
keyrings. This also does not define any AFS syscall number, since no
number in the Linux arm64 syscall table is "free" for us to use, as
far as I am aware.

Adapted from initial patches from Micheal Waltz <mwaltz@qualcomm.com>.

Reviewed-on: https://gerrit.openafs.org/11940
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 4f7550dcaf9375046514cdd97cea0f667e955e9f)

Change-Id: I12988da1fbbc7e3733fddf4ca11ad65b96a9c02f
Reviewed-on: https://gerrit.openafs.org/13095
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

hcrypto: Avoid 'double' param in arm64 kernel code

Currently, the RAND_add function in hcrypto uses a floating point
argument (specifically, a 'double'), as well as any implementations of
RAND_add. On Linux arm64, we cannot use floating point code in the
kernel, since the kernel module is compiled with -mgeneral-regs-only,
which prevents the use of floating point registers. No code in the
tree actually makes use of this argument, but its mere presence is
enough to cause an error with at least some versions of gcc with
certain arguments.

To get around this, simply change all instances of 'double' in hcrypto
to be a void pointer instead. This allows the code to compile as long
as nobody actually uses that argument in the kernel. If the code is
changed such that we do actually use that argument, the argument will
be a void* and so will probably (hopefully) cause a compiler error,
and the code will need to be examined to make sure this workaround
doesn't break anything.

We already do this on Solaris, which has similar issues for different
compiler versions and compiler flags. Add arm64 Linux to the cases
where we do this, but restrict this to kernel code only, to try to
avoid doing this more often than necessary.

Reviewed-on: https://gerrit.openafs.org/11939
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit b792dea0f1f83673b0b045adf608412901b3024c)

Change-Id: I95a016ba4a3dc368680b512110eb0058fcfdb468
Reviewed-on: https://gerrit.openafs.org/13094
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Do not set default AFS_SYSCALL

Currently, afs_args.h will define an AFS_SYSCALL value by default (31)
if the current platform does not define an AFS_SYSCALL value on its
own (via its param.h info).

This is dangerous, since if a platform does not define an AFS_SYSCALL,
or if it happens to not be defined for any reason, some code may try
to call syscall 31, which could be anything.

So get rid of this. If this breaks the build on any platform, then
that platform should define AFS_SYSCALL in its own platform-specific
header, or get rid of the problematic AFS_SYSCALL usage.

Reviewed-on: https://gerrit.openafs.org/11938
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 0a896b93c86e86f5b438880ef1634b4e39ee5779)

Change-Id: Ifcc17d5e26fde01302c43331ffdf005b6b9c3bd3
Reviewed-on: https://gerrit.openafs.org/13093
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Do not require AFS_SYSCALL

Various parts of the code make use of AFS_SYSCALL in order to
communicate with the libafs kernel module. Even though most modern
platforms do not use an actual syscall anymore (instead using an
ioctl-based method or similar to emulate the traditional AFS syscall),
some code paths rely on AFS_SYSCALL as a fallback, or just use
AFS_SYSCALL because they were never updated to use the newer methods.

Even platforms that do not use the traditional AFS syscall still
define the AFS_SYSCALL number, in case someone still uses it for
something. However, some platforms do not have an AFS syscall number;
there is no "slot" allocated to us, so we cannot safely issue any
syscall.

For those platforms, we must not reference AFS_SYSCALL at all, or we
will fail to build. So, get rid of these references to AFS_SYSCALL if
it is not defined. In some places, we can just avoid the relevant code
making the syscall. In a few other places, we just pretend like the
libafs kernel module was not loaded and yield an ENOSYS error, to make
the code simpler.

Reviewed-on: https://gerrit.openafs.org/11937
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Ian Wienand <iwienand@redhat.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit ed513bb516acdb28fc6bbf01714ef2e1df422a8a)

Change-Id: I5e7e2381935eaa595f9fa796f963260b870dc72c
Reviewed-on: https://gerrit.openafs.org/13092
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

util: Add the AFS_STRINGIZE() macro

Add a macro to help with easily printing the value of #define'd
constants, called AFS_STRINGIZE(). For example:

printf("The value of AFS_SYSCALL is: " AFS_STRINGIZE(AFS_SYSCALL) "\n");

Reviewed-on: https://gerrit.openafs.org/12893
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Ian Wienand <iwienand@redhat.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit f5794e029903db79f345f42582230a1fd0f7d823)

Change-Id: I33d14a62a04c0f79521ec253d51587952bf909a3
Reviewed-on: https://gerrit.openafs.org/13091
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

LINUX: Remove unused osi_fetchstore.c

Ever since commit ae5f411c (Linux 4.4: Do not use splice()), most of
osi_fetchstore.c has been '#if 0'd out. The only portion that isn't is
a function definition that is unreferenced (afs_linux_read_actor).

Remove the unused code, and other '#if 0' references to it; the code
can always be added back later when we can actually use it.

Reviewed-on: https://gerrit.openafs.org/13061
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 96a4bee20d42484148d163b85ca049dcc980a7a5)

Change-Id: I224a630f6f3f1d9e0d08a6cd7eae3d3b871b2bd6
Reviewed-on: https://gerrit.openafs.org/13074
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

afs: WriteThroughDSlots: Avoid write error panic

Currently, afs_WriteThroughDSlots panics if our call to
afs_WriteDCache fails. Since afs_WriteThroughDSlots is called every
minute by a background daemon, this means that if our cache fs becomes
inaccessible (by being forced read-only, or for any other reason), we
are virtually guaranteed to panic relatively quickly.

To try to avoid this at least for some cases, change
afs_WriteThroughDSlots to return an error to our caller when we
encounter such an error. For our background task, we can just ignore
the error and retry the writes on a future iteration. During shutdown,
we still panic if we encounter an error, to try to avoid silently
allowing a corrupt cache to be used on subsequent boots.

Reviewed-on: https://gerrit.openafs.org/13047
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 46d5695a383b2b993fdd598b770f4e3c0e1a41f3)

Change-Id: Iccbec550c00ac725c0033b075ac3cd0b4e1c78c2
Reviewed-on: https://gerrit.openafs.org/13073
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

afs: Avoid afs_GetDCache panic on cache open error

When we need to populate a dcache entry, afs_GetDCache calls
afs_CFileOpen to get a handle for our file backing that dcache.
Currently, if we cannot open the file, we panic.

To handle this a little more gracefully, just return an error from
afs_GetDCache instead. The relevant userspace request will probably
fail with EIO, but this is better than possibly crashing the whole
system.

Reviewed-on: https://gerrit.openafs.org/13046
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 22e64df8e043fa7bd78bff263866ee2bd6a6e13d)

Change-Id: Iddc7b0ebc56a64d792251f1f42c576603f2a86cf
Reviewed-on: https://gerrit.openafs.org/13072
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

LINUX: Return NULL for afs_linux_raw_open error

Currently, afs_linux_raw_open (and by extension, LINUX's
implementation of osi_UFSOpen) panic when they are unable to open the
given cache file. To allow callers to handle the error more
gracefully, change afs_linux_raw_open and osi_UFSOpen to return NULL
on error, instead of panic'ing. Expand the language a little on the
message logged while we're here, since the system might keep running
after this situation now.

This commit also changes all callers that did not already handle
afs_linux_raw_open/osi_UFSOpen errors to assert on errors, so we still
panic for all situations where we encounter an error. More graceful
behavior will be added in future commits; this commit does not change
the behavior on its own.

An error on opening cache files can legitimately happen when there is
corruption in the filesystem backing the disk cache, but possibly the
easiest way to generate an error is if the filesystem has been
forcibly mounted readonly (which can happen at runtime due to
filesystem corruption or various hardware faults). The latter will
generate -EROFS (-30) errors, but of course other errors are probably
possible.

Reviewed-on: https://gerrit.openafs.org/13045
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit f6af4a155d3636e8f812e40c7169dd8902ae64be)

Change-Id: I5f9a71a96cd9c875f4b024562dfa714f9cc27e2f
Reviewed-on: https://gerrit.openafs.org/13071
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

rx: connection aborts send serial zero when no conn available

When no connection object is available, send serial number zero (0)
instead of one (1). There is no harm in sending one (1) but it might
be confused as the first packet sent on the connection. Multiple
connection aborts sent would all be sent with serial one (1).

Serial number zero (0) can be an indication to humans reading packet
traces that the sender has no knowledge of the connection.

Reviewed-on: https://gerrit.openafs.org/12932
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 09f31d4c21328bcdc1dccdedf7df53d77c22e3e3)

Change-Id: Ie5b8052903307be4bc932e57e45efae7dd75dec8
Reviewed-on: https://gerrit.openafs.org/13051
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

rx: pass serial number to rxi_SendRawAbort

The practice of stamping abort packets with the connection's next
serial number was altered by a0ae8f514519b73ba7f7653bb78b9fc5b6e228f8.

This change restores the prior behavior by passing a serial number
as a parameter to rxi_SendRawAbort() so that the serial number can
be obtained from the connection instead of hard coded as 1.

Reviewed-on: https://gerrit.openafs.org/12931
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit cacf2b646759132dbf21e9c04fb3cfc6c2f8f1f3)

Change-Id: I36925d4283ba0aaedc7bee0e878d0e18d9aa23a7
Reviewed-on: https://gerrit.openafs.org/13050
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

redhat: Make separate debuginfo for kmods work with recent rpm

Commit 443dd5367e0cd9050ad39a6594c5be521271b4e9 introduced the
creation of separate debuginfo packages for kmod packages, and
commmit 387ae9536888419d7b101513e04e1c644e3218d6 moved the code
from the spec into the kmodtool script.

Recent versions of rpm (the issue was found on Fedora 27) extract
the debuginfo data from a copy of the original files having the
package version-release as a suffix. This broke the original
change since the regular expression passed to find-debuginfo.sh
no longer matched the name of the openafs.ko file. The file list
for the -debuginfo package remained empty, which caused rpmbuild
to fail.

Relax the regex to match the previous and current file names we
are after. It is possible but unlikely that .*openafs\.ko.* will
ever match any file not being a kernel module.

Reviewed-on: https://gerrit.openafs.org/13030
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 076b73e06df8240f209470ea6ee19b66eb4166c3)

Change-Id: Ib8a683d586ad3bd5237f27546a95ce92dd9de04f
Reviewed-on: https://gerrit.openafs.org/13036
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

redhat: PACKAGE_VERSION macro no longer exists

Commit 0d0e7699c9f789214205fe6837cded1a4c95f9c0 replaced all uses
of the %PACKAGE_VERSION macro in the spec with the %version one, but
missed an instance in the kmodtool script. Fix this, to avoid a
warning during rpmbuild.

Reviewed-on: https://gerrit.openafs.org/13031
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit cfa74883e4996dfee2bd6ffaa3b967e5a7941e0b)

Change-Id: I2d57ddc3700f509da3255df1f952f55d8cd7f0e8
Reviewed-on: https://gerrit.openafs.org/13037
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

redhat: remove the openafs-kernel-version.sh script

Commit ec706b21530240d7fb66bad2f08513eff8f7c335 (Remove Linux 2.4 compat
from RedHat packaging) removed the use of the script
openafs-kernel-version.sh, which was used in the linux 2.4 days to look
up the current kernel version. Nowadays, we use the openafs-kmodtool
script to determine the kernel version.

Remove the unused openafs-kernel-version.sh script from the package
sources.

Reviewed-on: https://gerrit.openafs.org/12996
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 28ea20d03f8abd8109547d6825edad159748397a)

Change-Id: I8d85ad57e1202f190c1a88812b4532b9642597f5
Reviewed-on: https://gerrit.openafs.org/12999
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

redhat: remove extra kernel version check

Commit a1c072ac562ccf74e5afb8449db1bcef86aef362 (redhat: fix rpmbuild command
line option defaults) added logic to set the default value of the kernvers
variable when not specified as an rpmbuild command line option.

This default value is not necessary, since 'kmodtool verrel' already returns
the current running kernel version by default. The result of 'kmodtool verrel'
sets the kverrel variable, which holds the value of the kernel version we are
building. The kernvers variable is only used as an argument to 'kmodtool
verrel' and may be empty by default to indicate the current version should be
returned.

Remove the unnecessary setting of the default value of kernvers.

Also update the information banner to show the value of kverrel, which is the
actual version we are building, instead of kernvers, which is empty be default.

Reviewed-on: https://gerrit.openafs.org/12995
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 9f0164f4254da39c3c31e0268da58ce7a6ccda1d)

Change-Id: I355e3772c6bda18a385b48be80fb7f952c2fca3b
Reviewed-on: https://gerrit.openafs.org/12998
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>

FBSD: param.h consistency

Commit 88dc4d93f5ef080da8f56fac453f095e6c79d4a0 ("Add param.h
files for recent FreeBSD") introduced an inconsistency between
the i386 and amd64 param.h files for 11.1 and 12.0 regarding
the *_FBSD101_ENV #defines.

Citing Benjamin Kaduk: "Traditionally we have the param.h for
a FreeBSD N.0 release include the (N-1).Y values that existed
at the time of the N.0 release, and freeze that set of (N-1).Y
values for the lifetime of FreeBSD N.x, if that makes sense."

Given that FreeBSD 11.0 was released shortly after 10.3, and
12.0 is not yet released, consistently #define
*_FBSD10{1..3}_ENV for 11.1 and *_FBSD10{1..4}_ENV for 12.0

Reviewed-on: https://gerrit.openafs.org/12990
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 154512831966d12c1e32e6271d4ab1440a25b96e)

Change-Id: I5a746beec62f3843526af3f65e0ba03380a5aa41
Reviewed-on: https://gerrit.openafs.org/12997
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

redhat: Create unique debuginfo packages for kmods

Commit 443dd5367e0cd9050ad39a6594c5be521271b4e9 ("redhat:
separate debuginfo package for kmod rpm") introduced the
creation of separate debuginfo packages for the kmod packages.
As such, this is useful, but all debuginfo packages for a given
OpenAFS release ended up with the same name/version/release for
the kmod debuginfo package, no matter which kernel release or
variant the kmod was built for.

Move the additional black magic from the spec into the kmodtool
script where we have the means to do better: Use the same naming
and versioning conventions as for the kmod-openafs packages
themselves.

Reviewed-on: https://gerrit.openafs.org/12977
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Tested-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 387ae9536888419d7b101513e04e1c644e3218d6)

Change-Id: I220408eacd0c39449843240f225cfced163cbff7
Reviewed-on: https://gerrit.openafs.org/12986
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

ubik: Log sync site for SDISK_SendFile USYNC error

In SDISK_SendFile, we return a USYNC error if the caller is not the
sync site. Say who the sync site is when we do this, to possibly help
post-mortem debugging.

Reviewed-on: https://gerrit.openafs.org/12943
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit c44f6f7a8052bdd1fb021e07bb6ae142b61e6b5b)

Change-Id: I398780c98ee5eade75e06a42d54637c169bc250a
Reviewed-on: https://gerrit.openafs.org/12948
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Avoid empty libtool -export-symbols-regex pattern

Currently, in LT_LDLIB_shlib_missing, we construct our
-export-symbols-regex pattern like so (with some escaping):

    "($(sed -e 's/^/^/' -e 's/$/$/' xxx.sym | tr '\n' '|' | sed -e 's/|$//'))"

The idea is that for a .sym file consisting of, for example:

    foo
    bar

We then generate a regex like (^foo$|^bar$). However, since the 'tr'
removes all newlines, the line given to the last 'sed' in the pipeline
has no trailing newline. On some systems, such as Solaris, this causes
sed to not output anything at all, resulting in a regex pattern of
just "()".

For example:

    # on Debian
    $ echo -n foo | sed -e 's/foo/bar/'
    bar$

    # on Solaris
    $ echo -n foo | sed -e 's/foo/bar/'
    $

To avoid this, we can change the sed pipeline to not remove the
newlines until the very end. Change the way we construct our regex to
this instead:

    "($(sed -e 's/^/^/' -e 's/$/$|/' -e '$ s/|$//' xxx.sym | tr -d '\n'))"

So the sed removes the extra '|' in the last element by looking at the
last line, instead of looking at the end of the line after the 'tr'
conversion.

Reviewed-on: https://gerrit.openafs.org/12944
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit d0805d72b7a48dcaa7abe1aea136a8cd963d76c2)

Change-Id: Iebf0996e63c6233bebbf855cde21094a73fbd420
Reviewed-on: https://gerrit.openafs.org/12949
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

ubik: don't set database epoch to 0 if not needed

If our attempt to receive a fresh database from a peer fails, we will
overwrite the version.epoch field of our current local copy of the
database with an invalid value, "0". The idea behind this approach is
to make sure that this database will not be seen as a legit copy if the
transfer is not completed properly. Although it is questionable if this
approach is still necessary (since the current version writes the data
into a temporary file), it is undisputed that the database version does
not have to be invalidated if the transfer fails in a early stage where
no data has been written and we could safely continue to reuse the local
copy for read-only queries. Early failures may happen if:

1. The peer sending the database to us is not the peer we believe to be
the sync site;

2. The sender is not authorized to call DISK_SendFile;

In both cases, the database epoch is invalidated. As a result of that,
we may have the following consequences:

1. Reads may not be allowed

Once the on disk epoch is invalidated, if the server in question is
rebooted, the invalid on disk epoch will be used to initialize the in
memory epoch. At this point, reads may not be allowed since
urecovery_AllBetter checks if the in memory epoch is greater than 1.
Reads should not be blocked forever since the sync-site will send a new
database to this remote and, as a result of that, the invalid version
will be corrected.

2. Data can be lost

If the site with the invalid epoch is the one with the most recent
database, the database can be rolled back to an earlier version during a
new quorum establishment. Consider the following scenario where we have
three sites:

Site A (up - database up to date) (sync-site)
Site B (up - database up to date)
Site C (down - old database)

The epoch of B is invalidated due to the problem fixed by this patch.
Then, A is turned off and C is turned on. In this scenario, the new
sync-site will distribute the old database held by C since its epoch is
greater than 0.

To fix the problem in question, do not set the database epoch to 0
if the local database was not modified.

Acknowledgements:

Hartmut Reuter <hartmut.reuter@gmx.de>
    - found the problem;
    - suggested a possible solution;

Benjamin Kaduk <kaduk@mit.edu>
    - submitted the first version;

Andrew Deason <adeason@sinenomine.net>
    - suggested changes;

Reviewed-on: https://gerrit.openafs.org/12924
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
(cherry picked from commit bd6a2484011dad6298c4ce97dd0cd68e0834baa5)

Change-Id: I64808d4adf6a5925083a671308a60f93ca427180
Reviewed-on: https://gerrit.openafs.org/12937
Reviewed-by: Hartmut Reuter <reuter@rzg.mpg.de>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

afs: improve -volume-ttl error messages

Change the afs call which sets the volume ttl value to return EFAULT
instead of EINVAL when given an out of range value for the volume ttl
parameter. This is more consistent with the other op codes, which
return EFAULT when given an out of range parameter and allows the caller
to distinguish between an invalid opcode and a bad parameter.

Move the volume ttl range constants to afs_args.h, which is where
constants related to the op codes are supposed to be defined. This makes
the constants available to the caller in afsd.c as well as the
implementation in afs_call.c.

Update afsd to print a more sensible error message when the volume ttl
set calls fails due to an out of range parameter.

Reviewed-on: https://gerrit.openafs.org/12918
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 6d74e3d6a1becf86cec30efc2d01a5692167afe1)

Change-Id: I2cd86b6fbba31f74862bb902ac94b0874de8afac
Reviewed-on: https://gerrit.openafs.org/12936
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Make OpenAFS 1.8.0

Update version strings for 1.8.0.

Change-Id: I80be6d31a6578c6cc8de636e6064d320b25a4246
Reviewed-on: https://gerrit.openafs.org/12954
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

Update NEWS for 1.8.0 final release

Change-Id: I70d73b832cd69395c712b42a391cd4d6d3ea4c8f
Reviewed-on: https://gerrit.openafs.org/12953
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>

afs_pioctl: avoid -Wpointer-sign

Change the declaration of 'addr' to be a signed int, to match
RXAFS_CallBackRxConnAddr() and the afsd_pd_GetInt() used with it.
This was detected by clang 4.0 in FreeBSD 11.1, via -Wpointer-sign.

Reviewed-on: https://gerrit.openafs.org/12934
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 79f33b859aeb3c91f2cce7597fdc138978c4e1d9)

Change-Id: Iee85059bebfc8d6fbda3409b720576bd4f6c5f8f
Reviewed-on: https://gerrit.openafs.org/12938
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>