Michael Meffie [Wed, 17 Aug 2016 14:57:48 +0000 (10:57 -0400)]
CODING: one-line if statements should not have braces
Update the style guide with a declaration of the prevailing and
preferred brace style for one-line if statements and loops. Provide an
example and counter-example.
Change-Id: Iafeea977203b76c0e67385779fb4ed57f3c6699a
Reviewed-on: https://gerrit.openafs.org/12370 Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Michael Meffie [Thu, 11 Jun 2015 15:25:51 +0000 (11:25 -0400)]
libafs: update the volume setup time when the vldb is rechecked
The vldb is rechecked when the fileserver returns certain error codes,
such as VMOVED. When the vldb is rechecked, update the volume
setupTime to reflect the most recent time the volume vldb information
is known to be correct.
Be sure the VRecheck flag is cleared after checking the vldb, since
the volume write lock was dropped after finding the volume.
Change-Id: I0ba389ee408de602e0059fbe8013012501c337d3
Reviewed-on: https://gerrit.openafs.org/11897 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>
Andrew Deason [Sat, 8 Aug 2015 21:13:54 +0000 (16:13 -0500)]
afs: Make ONEGROUP_ENV not Linux-specific
The functionality in AFS_LINUX26_ONEGROUP_ENV does not really need to
be Linux-specific (it's just only implemented for Linux right now).
Rename it to AFS_PAG_ONEGROUP_ENV, and remove some Linux-specific
checks when checking for "onegroup" PAG GIDs.
[mmeffie@sinenomine.net: Move AFS_PAG_ONEGROUP_ENV to param.h]
Michael Meffie [Wed, 29 Apr 2015 16:00:24 +0000 (12:00 -0400)]
afs: add afsd -inumcalc option
This commit adds the afsd -inumcalc command line switch to specify the
inode number calculation method in a platform neutral way.
Inode numbers reported for files within the AFS filesystem are generated
by the cache manager using a calculation which derives a number from a
FID. Long ago, a new type of calculation was added which generates inode
numbers using a MD5 message digest of the FID. The MD5 inode number
calculation variant is computationally more expensive but greatly
reduces the chances for inode number collisions.
The MD5 calculation can be enabled on the Linux cache manager using the
Linux sysctl interface. Other than the sysctl method of selecting the
inode calculation type, the MD5 inode number calculation method is not
specific to Linux.
This change introduces a command-line option which accepts a value to
indicate the calculation method, instead of a simple flag to enable MD5
inode numbers. This should allow for new inode calculation methods
in the future without the need for additional afsd command-line flags.
Two values are currently accepted for -inumcalc. The value of 'compat'
specifies the legacy inode number calculation. The value 'md5' indicates
that the new MD5 calculation is to be used.
Benjamin Kaduk [Wed, 13 Jul 2016 23:23:50 +0000 (18:23 -0500)]
Document minimum supported compiler versions
Pick some fairly old versions of clang and gcc and document them
as the minimum supported version. This will let us make assumptions
about compiler features that are available when using those compilers.
Change-Id: Ibb8df72c9b12cc7adff39ece9708a428975ba703
Reviewed-on: https://gerrit.openafs.org/12331 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Anders Kaseorg [Tue, 26 Jul 2016 01:04:59 +0000 (21:04 -0400)]
Linux 4.7: Follow key_alloc API change
Linux v4.7-rc1~124^2~2^2^2~9 adds an eighth optional argument
restrict_link. The same commit adds a KEY_ALLOC_BYPASS_RESTRICTION
macro, which we test so we can avoid adding another configure test.
Change-Id: I83e27b54ba5711124dccaa41de7155be77054f47
Reviewed-on: https://gerrit.openafs.org/12345 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Anders Kaseorg <andersk@mit.edu> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Mark Vitale [Fri, 27 May 2016 20:44:17 +0000 (16:44 -0400)]
SOLARIS: corrupted content of mmap'd files over 4GiB
Many Solaris programs and utilities (notably mdb and cp) use mmap() in
their implementation. When AFS files exceeding 4GiB are mmap'd, the
contents of the file will be incorrectly mapped into memory. Starting at
4GiB + 1, the first 4GiB will be repeated for the remainder of the file.
If the mmap'd file is written back to storage (AFS or otherwise), the
newly created file will also be corrupted.
This is due to a bug in the afs_map() routine that supports mmap() of
AFS files on Solaris. The segvn_crarg.offset passed to the Solaris
virtual memory APIs is incorrectly cast to u_int, causing it to wrap at
4GiB.
Although Solaris passes the offset from fop_map() to afs_map() as type
offset_t, the destination segvn_crargs.offset is actually type
u_offset_t. Existing examples of other Solaris filesystems (e.g.
zfs_map() ) cast the offset from offset_t to u_offset_t when assigning to
segvn_crargs.offset. If it's good enough for ZFS, it's good enough for
AFS.
Correctly cast the offset to u_offset_t.
Thanks to Robert Milkowski for the report and diagnosis.
Change-Id: Id25363255ec011f2ad7e003ca3e4a1385bebff7e
Reviewed-on: https://gerrit.openafs.org/12292 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Mark Vitale [Thu, 26 May 2016 20:53:47 +0000 (16:53 -0400)]
SOLARIS: support mmap() over 4GiB
When mmap() is issued for exactly 4GiB of a large AFS-resident file,
mmap() fails with ENOMEM. This is because the AFS code is handling the
requested length as u_int instead of size_t, resulting in a 0 being
passed back to the caller.
When mmap() is issued for non-multiples of 4GiB, the subsequent mapping
will not contain all the requested pages, and for the same reason - the
mapped size has been truncated to 32 bits. This results in SIGSEGV when
accessing the non-mapped page(s).
Fix the signature of afs_map() to specify the correct type for the length.
Thanks to Robert Milkowski for the report and diagnosis.
Change-Id: I8a9f0cb04ff9b80de5516e14d0679b06ef0b3f9a
Reviewed-on: https://gerrit.openafs.org/12291 Tested-by: BuildBot <buildbot@rampaginggeek.com> Tested-by: Mark Vitale <mvitale@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
The automatically generated pkgbuild.sh file should not be tracked by
git. To fix this problem, add the name of this file to the proper
.gitignore file.
Change-Id: I9bdbad8e7cc02926de61e337ccb94d8a2c27ae43
Reviewed-on: https://gerrit.openafs.org/12343 Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: Benjamin Kaduk <kaduk@mit.edu>
Andrew Deason [Sun, 1 May 2016 16:24:30 +0000 (11:24 -0500)]
ubik: Don't RECFOUNDDB if can't contact most sites
Currently, the ubik recovery code will always set UBIK_RECFOUNDDB
during recovery, after asking all other sites for their dbversions.
This happens regardless of how many sites we were actually able to
successfully contact, even if we couldn't contact any of them.
This can cause problems when we are unable to contact a majority of
sites with DISK_GetVersion. Since, if we haven't contacted a majority
of sites, we cannot say with confidence that we know what the best db
version available is (which is what UBIK_RECFOUNDDB represents; that
we've found which database is the one we should be using). This can
also result in UBIK_RECHAVEDB in a similar situation, indicating that
we have the best db version locally, even though we never actually
asked anyone else what their db version was.
For example, say site A is the sync site going through recovery, and
DISK_GetVersion fails for the only other sites B and C. Site A will
then set UBIK_RECFOUNDDB, and will claim that site A has the best db
version available (UBIK_RECHAVEDB). This allows site A to process ubik
write transactions (causing the db to be labelled with a new epoch),
or possibly to send the db to the other sites via DISK_SendFile, if
they quickly become available during recovery. Ubik write transactions
can succeed in this situation, because our ContactQuorum_* calls will
succeed if we never try to contact a remote site ('rcode' defaults to
0).
This situation should be rather rare, because normally a majority of
sites must be reachable by site A for site A to be voted the sync site
in the first place. However, it is possible for site A to lose
connectivity to all other sites immediately after sync site election.
It is also possible for site A to proceed far enough in the recovery
process to set UBIK_RECHAVEDB before it loses its sync site status.
As a result of all of this, if a site with an old database comes
online and there are network connectivity problems between the other
sites and a ubik write request comes in, it's possible for the "old"
database to overwrite the "new" database. This makes it look as if the
database has "rolled back" to an earlier version.
This should be possible with any ubik database, though how to actually
trigger this bug can change due to different ubik servers setting
different network timeouts. It is probably the most likely with the
VLDB, because the VLDB is typically the most frequently written
database.
If a VLDB reverts to an earlier version, it can result in existing
volumes to appear to not exist in the VLDB, and can result in new
volumes re-using volume IDs from existing volumes. This can result in
rather confusing errors.
To fix this, ensure that we have contacted a majority of sites with
DISK_GetVersion before indicating that we have located the best db
version. If we've contacted a majority of sites, then we are
guaranteed (under ubik assumptions) that we've found the best version,
since previous writes to the database should be guaranteed to hit a
majority of sites (otherwise they wouldn't be successful).
If we cannot reach a majority of sites, we just don't set
UBIK_RECFOUNDDB, and the recovery process restarts. Presumably on the
next iteration we'll be able to contact them, or we'll lose sync site
status if we can't reach the other sites for long enough.
Andrew Deason [Fri, 13 May 2016 02:34:31 +0000 (21:34 -0500)]
vlserver: rx_SetRxDeadTime before ubik init
Currently, vlserver calls rx_SetRxDeadTime to set the default rx
deadtime to 50 seconds, but it does so after calling
ubik_ServerInitByInfo. ubik_ServerInitByInfo creates several rx
connections before it returns, and so these connections get the
default rx deadtime (12 seconds), instead of the 50 seconds vlserver
tries to set.
When ubik detects that a remote site is down, ubik recreates the rx
connections for that site, and this new connection gets the new
deadtime of 50 seconds.
This means that ubik behavior can have different timings in the
vlserver, depending on if any remote sites have ever been detected as
being 'down' or not. This can result in seemingly-inconsistent or
confusing behavior, since some sequences of operations that appear
identical can produce different results, depending on if the 12-second
timeout or the 50-second timeout is being used.
This behavior is not directly to blame for any problems, but it can be
very confusing, especially when trying to diagnose or reproduce bugs.
So to make things more consistent, just call rx_SetRxDeadTime earlier,
so all conns always get the 50-second timeout.
In order to do this, though, we must also ensure that rx_Init is
called before rx_SetRxDeadTime (otherwise, rx_Init will overwrite our
configured deadtime). So also call rx_Init earlier; rx_Init is
idempotent, so it's okay that it may be called again after or before
this.
Note that vlserver is currently the only ubik server that sets a
deadtime of 50 seconds, and it's not clear why. Another way to solve
this is to just remove the call to rx_SetRxDeadTime, to make vlserver
behave more similar to ptserver. But this commit takes a conservative
approach to result in a deadtime that is probably the most common in
current use. Since, most long-running vlservers will probably
eventually lose contact with remote sites at one time or another, and
so will eventually use a deadtime of 50 seconds.
Change-Id: I49430144d9a62eb8cad1509c1aeafc9fcc927f8e
Reviewed-on: https://gerrit.openafs.org/12285 Tested-by: Andrew Deason <adeason@dson.org> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
macos: use pkgbuild to build the package on 10.10/10.11
PackageMaker is no longer part of OS X. As a result, it
is not possible to build the package on OS X 10.10 and
OS X 10.11 using the existing code.
To solve this problem, a new script, along with a couple
of new files, are provided.
- pkgbuild.sh
This script uses the command line tools pkgbuild and
productbuild to build the package on OS X 10.10 and
OS X 10.11. By default, the package built by this
script will not be signed. Optionally, the package
might be signed.
- Distribution.xml
This file is nothing more than an XML file used by
productbuild. It is mainly used to configure how the
installer will look and behave.
- conclusion.txt
Contains the text that is displayed by Installer at
the end of the installation process. Only used by
El Capitan and further.
- Uninstall.14.15
This script can be used by OS X 10.10/10.11 users
to uninstall OpenAFS.
Notes:
- This work is based on a patch made by Brandon Allbery
<ballbery@sinenomine.net> with fixes and updates from
Andrew Deason <adeason@dson.org>.
- El Capitan and further prevent us from touching
/usr/bin directly. As a result, /opt is used.
- If the package is not signed, the user will have
to disable the OS X security protections. Otherwise,
the client will not work.
- Now we have two different scripts to build the
package on OS X. For OS X 10.10 and newer versions,
pkgbuild.sh will be used. For older versions,
the existing buildpkg.sh will be used.
ptuser: guarantee that all names are valid C strings
The prname type is represented in XDR as a vector[PR_MAXNAMELEN]
of char, not as a string, which means that the XDR (de)serializer
will not guarantee null-termination. Guarantee that all buffers
used in the public protection server API are in fact valid strings
by disallowing any names that are exactly PR_MAXNAMELEN (64)
characters long. DO NOT silently truncate names that are even
longer than this. Consistently use the prname typedef in
declarations to reinforce the length limitation to those reading
the header file. Introduces a new protection error code,
PRNAMETOOLONG, which will be returned if either IN or OUT parameters
would exceed the limit.
[kaduk@mit.edu convert macro to static_inline function and expand
at call sites; add string_ wrapper to add checking to viced and libadmin;
export the string_ wrapper from libafsauthent for the windows build]
Change-Id: I65f850afcfea2fd2bc0110ca7b7f6ecca247dd58
Reviewed-on: https://gerrit.openafs.org/7896 Reviewed-by: Chas Williams <3chas3@gmail.com> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Joe Gorse [Thu, 9 Jun 2016 18:11:23 +0000 (14:11 -0400)]
Linux 4.6: rm PAGE_CACHE_* and page_cache_{get,release} macros
This is an automatic patch generated by Coccinelle (spatch) from the commit message of the linked commit:
https://github.com/torvalds/linux/commit/09cbfeaf1a5a67bfb3201e0c83c810cecb2efa5a
We will not add an autoconfig test because the PAGE_{...} macros should exist
where the PAGE_CACHE_{...} were previously.
The spatch used:
@@
expression E;
@@
- E << (PAGE_CACHE_SHIFT - PAGE_SHIFT)
+ E
@@
expression E;
@@
- E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT)
+ E
Stephan Wiesand [Wed, 13 Jul 2016 14:55:11 +0000 (16:55 +0200)]
redhat: Use a secure URL to retrieve CellServDB
By default, makesrpm.pl will use wget to retrieve the CellServDB
as specified in the spec file. Even though the script need not and
thus should not be run by a privileged UID, make this a bit more
secure by specifying an https URL.
Change-Id: I0f14bbac35e7dc30a6e194f8706f7f3674d15a3f
Reviewed-on: https://gerrit.openafs.org/12329 Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: Benjamin Kaduk <kaduk@mit.edu>
Michael Meffie [Thu, 11 Jun 2015 15:02:20 +0000 (11:02 -0400)]
libafs: rename volume accessTime to setupTime
Since OpenAFS 1.0, the struct volume accessTime member has been the time
time the volume structure is setup, not the last time the volume was
used (as indicated by the comments). This time stamp is only used to
find the oldest available volume slot in the disked backed volume cache.
(Perhaps in pre-OpenAFS this was updated each time the volume was
referenced.)
Rename this structure member and update the comments for it.
Change-Id: I33a6371e8800b2d0f7b2700db0785fc365a8649e
Reviewed-on: https://gerrit.openafs.org/11896 Reviewed-by: Perry Ruiter <pruiter@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: BuildBot <buildbot@rampaginggeek.com>
Commit a0f416e3504929b304fefb5ca65e2d6a254ade2e unconditionally turned
on the new ubik_BeginTransReadAnyWrite functionality for the vlserver,
which allows us to read data from ubik during a conflicting ubik write
lock.
This feature is not ready for production use. Make it a build time
option, marked as experimental, until more testing can be done.
Change-Id: If64702e7a7ed2340066df5faf82ce8b0875fc610
Reviewed-on: https://gerrit.openafs.org/12240 Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Michael Meffie [Fri, 5 Jun 2015 14:09:54 +0000 (10:09 -0400)]
libafs: avoid resetting the dynroot volume every 10 minutes
The dynroot volumes are synthetic, so do not need to be reset every time
the background daemon checks the volumes.
The results of osi_Time() is a signed 32-bit integer, and the volume
expireTime is an signed 32-bit integer, so use signed 32-bit integers
for the expiry check.
Benjamin Kaduk [Sun, 15 May 2016 18:51:56 +0000 (13:51 -0500)]
viced: make -vhashsize usable for non-DAFS
The ability to set the size of the volume hash table was added
at the same time that DAFS was introduced, and got caught up
in the same preprocessor conditional. However, -vhashsize can
be useful for the traditional fileserver as well (even though
we recommend DAFS over the traditional fileserver), so let it
be used in that case.
Update the man pages accordingly and fix some grammar while here.
Noted by Mark Vitale.
Change-Id: Ic3282c9d661d60cf36f9ffb197e723a3f71da167
Reviewed-on: https://gerrit.openafs.org/12287 Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Marcio Barbosa [Tue, 28 Jun 2016 15:48:06 +0000 (12:48 -0300)]
venus: fix memory leak
The fs getserverprefs command displays preference
ranks for file / volume location server machine
interfaces. In order to get the complete set of
preference ranks, the VIOC_GETSPREFS system call
might have to be called several times. If so, the
memory previously allocated should be released.
Benjamin Kaduk [Sun, 1 May 2016 23:48:40 +0000 (19:48 -0400)]
Linux 4.5: don't access i_mutex directly
Linux commit 5955102c, in preparation for future work, introduced
wrapper functions to lock/unlock inode mutexes. This is to
prepare for converting it to a read-write semaphore, so that
lookup can be done with only the shared lock held.
Adopt the afs_linux_*lock_inode() functions accordingly, and
convert afs_linux_fsync() to using those wrappers, since the
FOP_FSYNC_TAKES_RANGE case appears to be the current case.
Amusingly, afs_linux_*lock_inode() already have a branch to
handle the case when inode serialization is protected by a
semaphore; it seems that this is going to come full-circle.
Change-Id: Ia5a194acc559de21808655ef066151a0a3826364
Reviewed-on: https://gerrit.openafs.org/12268 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Joe Gorse <jhgorse@gmail.com> Tested-by: Joe Gorse <jhgorse@gmail.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Linux 4.5: get_link instead of follow_link+put_link
In linux commit 6b255391, the follow_link inode operation was
replaced by the get_link operation, which is basically the same
but takes the inode and dentry separately, allowing for the
possibility of staying in RCU mode.
For now, only support this if page_get_link is available and we are
using the USABLE_KERNEL_PAGE_SYMLINK_CACHE
The previous test for USABLE_KERNEL_PAGE_SYMLINK_CACHE used a bogus,
undefined configure variable (ac_cv_linux_kernel_page_follow_link).
Remove it, as it was not needed
Change-Id: I2d7851d31dd4b1b944b16fad611addb804930eca
Reviewed-on: https://gerrit.openafs.org/12265 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Joe Gorse <jhgorse@gmail.com> Tested-by: Joe Gorse <jhgorse@gmail.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Use rxkad_crypt for inter-volser traffic, if asked
Add a -s2scrypt option to the volume server, with possible options:
* never -- the existing behavior
* always -- switch to using afsconf_ClientAuthSecure, which uses
rxkad_crypt, for ForwardVolume calls.
* inherit -- encrypt inter-server traffic if the causal client
connection is encrypted. This has the effect of "inheriting" the
"-encrypt" flag given to "vos release", for example.
Thanks to Jeffrey Altman for pointers and to Andrew Deason for noting
the existence of rxkad_GetServerInfo.
[mmeffie@sinenomine.net fix assertion and style update.]
Change-Id: Ia295ba3f29a8494c8250a480fb26594468d2116a
Reviewed-on: https://gerrit.openafs.org/11349 Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Thomas Keiser <tkeiser@gmail.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Benjamin Kaduk [Sat, 14 May 2016 18:37:54 +0000 (13:37 -0500)]
Fix typo in kaserver appendix
Though it's very unlikely that someone would actually want to
set up a new kaserver installation, if we have documentation for
it, it ought to at least do what it claims to do.
Mark Vitale [Fri, 13 May 2016 02:23:36 +0000 (22:23 -0400)]
salvageserver: unable to write child log: out of memory
Changes to salvageserver logging in commit 24fed351fd13b38bfaf9f278c914a47782dbf670
introduced a new bug in SalvageLogCleanup; the test for calloc() failure
was inadvertently inverted.
Andrew Deason [Thu, 5 May 2016 05:01:22 +0000 (00:01 -0500)]
ubik: Don't clear ubik_lastYesTime on startup
In uvote_Init, we set ubik_lastYesTime to the current time just a few
lines before. It is important to set ubik_lastYesTime to the current
time, since that prevents us from voting for anyone in an ubik
election for at least BIGTIME seconds.
If we clear ubik_lastYesTime to 0, that means restarting a ubik server
could cause it to immediately start voting for a different site than
it was voting for before it started. This violates one of the ubik
invariants; as mentioned in the comments in SVOTE_Beacon, we cannot
promise sync site support to more than one site within BIGTIME
seconds. So initializing ubik_lastYesTime to 0 could cause two
different sites to be voted sync site simultaneously, if our restart
caused a premature change in vote.
Change-Id: I410fbefa8d699aac1c900d1fdd4e355b87917ad7
Reviewed-on: https://gerrit.openafs.org/12279 Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Reviewed-by: Michael Meffie <mmeffie@sinenomine.net> Reviewed-by: Jeffrey Altman <jaltman@auristor.com> Reviewed-by: Jeffrey Hutzelman <jhutz@cmu.edu> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: BuildBot <buildbot@rampaginggeek.com>
Michael Meffie [Wed, 4 May 2016 00:31:41 +0000 (20:31 -0400)]
afs: retire HAVE_LINUX_COMPLETION_H conditionals
Now that support for linux 2.4 has been sunset, as of commit ccf353ede6ef5cce7c562993d1bea0d20844bdb7, it is no longer necessary to
put conditional compilation checks around the linux wait-for-completion
functions, which were introduced sometime during the linux 2.4 series
and have been available since.
Michael Meffie [Thu, 28 Apr 2016 21:23:23 +0000 (17:23 -0400)]
afs: remove commented out sleep in afs_call.c
The cell info setup was moved to the beginning of the startup sequence
and an unnecessary sleep commented out in the syscall in which the cell
info was set in commit 3fa5f389b2b7778cf0df5a506c91b427b147c4c2.
Clean up afs_call.c a bit by removing this commented out code.
Michael Meffie [Thu, 28 Apr 2016 21:15:06 +0000 (17:15 -0400)]
afs: remove commented out AIX specific tweak
This AIX specific code block has been commented out since
openafs-ibm-1_0. The comments seem to indicate this was a networking
tweak specific to AIX, but the kernel variables involved were not
exported. Clean up afs_call.c by removing this dead code.
Michael Meffie [Thu, 28 Apr 2016 20:52:42 +0000 (16:52 -0400)]
afs: cleanup remnant afs_vfs_mount prototype in afs_call.c
The call to afs_vfs_mount() in afs_call.c was removed in commit a5ab24af71efe6b80eb0f78d1979c5ab1d1e594d. Remove the remnant prototype
and the useless conditionals around it.
Chas Williams [Fri, 25 Dec 2015 11:37:06 +0000 (06:37 -0500)]
LINUX: dcache updates for mkdir and sillyrename
Commit d075b0549d62e4a81b7543b9c2f5dac242074909 introduced
parent_vcache_dv() to get the data version from fakestat mount points.
.mkdir (essentially .create for directories) should use this when
updating ->d_time.
In sillyrename, __dp is a negative dentry that should be forced to
revalidate since the new name in dentry now exists.
Benjamin Kaduk [Thu, 20 Aug 2015 17:55:02 +0000 (13:55 -0400)]
Make setting of CFLAGS_NOSTRICT make sense
Previously, we would set -fno-strict-aliasing only when
--enable-checking was given to configure but not
--enable-checking=all. The intent seems to have been to
only warn about strict aliasing violations when --enable-checking=all
is in use, but that there was no need to disable the strict-aliasing
diagnostics when -Werror was not enabled.
Unfortunately, -fno-strict-aliasing affects not only the diagnostics
emitted by the compiler, but also the code generation! So we were
leaving the normal (no --enable-checking) case with the compiler
assuming C's strict aliasing rules. The OpenAFS codebase has
historically not been strict-aliasing safe (for example,
commit 15e8678661ec49f5eac3954defad84c06b3e0164 refers to a
runtime crash using a certain compiler version, which is diagnosed
as the compiler using the C strict aliasing rules to make
optimizations that exposed the invalid program code.
To avoid futher surprises due to new compiler optimizations
that utilize the C strict aliasing rules, always disable
strict aliasing except when --enable-checking=all is used.
Benjamin Kaduk [Sun, 20 Dec 2015 19:33:36 +0000 (13:33 -0600)]
Partially unifdef afs_pag_call.c
This file is only built on linux, for afspag.ko. There is no
need to retain the artifiacts of its historical origin that include
conditionals for SUN5 or HPUX or the like.
Andrew Deason [Tue, 1 Apr 2014 18:28:20 +0000 (13:28 -0500)]
vos: Remove redundant " done" messages
In 1.4, a 'vos backup' command looked like this:
$ vos backup root.cell -verbose
Re-cloning backup volume 537351386 ... done
Created backup volume for root.cell
As of 1.6.1, this output now looks like this:
$ vos backup root.cell -verbose
Re-cloning backup volume 537351386 ... done
done
Created backup volume for root.cell
Note the extra " done". This change can break scripts that parse "vos"
output, but mainly it just looks confusing and doesn't make any sense.
This extra " done" appeared in verbose output for 'vos backup', 'vos
backupsys', and 'vos clone'. It was introduced by commit 13a4f2b1,
which added a VDONE to DoVolClone. This new VDONE call does make
sense, as this does make DoVolClone more self-contained, but the old
VDONE messages were not removed, so an extra " done" got printed.
In addition, commit 13a4f2b1 introduced a new call to DoVolDelete
followed by a VDONE, even though DoVolDelete calls VDONE itself,
causing another redundant " done".
To get rid of all of these redundant " done" messages, remove some
extra VDONE calls in UV_BackupVolume and UV_CloneVolume.
Almost all other calls to VDONE in vsprocs.c are matched by a
preceding message that says what we are doing. The sole exception is
UV_ChangeLocation, which outputs a " done" without any preceding
message. However, this is the behavior that UV_ChangeLocation (and
thus 'vos changeloc') has always has since it was introduced in 0c03f860.
Thanks to Jakub Moscicki of CERN, who originally reported this issue
at EAKC 2014.
Change-Id: I6a13c85e73deb59b511086207a296f4017f799dc
Reviewed-on: https://gerrit.openafs.org/10980 Reviewed-by: Michael Meffie <mmeffie@sinenomine.net> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Stephan Wiesand [Mon, 11 May 2015 11:54:25 +0000 (13:54 +0200)]
redhat: remove leftover legacy kmod code from spec
Commit ec706b21530240d7fb66bad2f08513eff8f7c335 removed support
for Linux 2.4 and legacy kernel modules, but missed a few more
occurances of the latter. Remove those too.
Benjamin Kaduk [Sat, 13 Feb 2016 19:02:55 +0000 (13:02 -0600)]
doc: set use.id.as.filename for chunk.xsl
The deployed documentation on docs.openafs.org uses html file names
that match the id element for the XML elements in question. On
recent Debian systems, rebuilding these documents uses different
names for the files, based on their position within the document
hierarchy.
For consistency with past usage, and to avoid breaking direct links
when possible, set the xsl parameter use.id.as.filename to go back
to the old naming scheme.
Change-Id: I6d3fa2b74e319d1375891170817760d027e82f03
Reviewed-on: https://gerrit.openafs.org/12189 Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: Benjamin Kaduk <kaduk@mit.edu>
Steve Simmons [Tue, 13 Sep 2011 17:41:19 +0000 (13:41 -0400)]
Reconciliation of src/{afs,vol}/voldefs.h
Bring these two files back into synchronization. Fix
possible bug on very old SysV hosts where volume
header file extension could be handled inconsistently.
Overall differences reduced by about 50%. HPUX/AIX
differences now correctly managed in both versions.
Comment formats and whitespace in both modified to
remove differences and follow openafs standards.
Change-Id: I8fdf9941a0ee6ad7a091be38740bc2796f2b1d18
Reviewed-on: https://gerrit.openafs.org/5405 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Chas Williams <3chas3@gmail.com> Reviewed-by: Michael Meffie <mmeffie@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Benjamin Kaduk [Fri, 25 Dec 2015 00:17:34 +0000 (18:17 -0600)]
Add extra parentheses to macro bodies
In order to avoid surprises due to operator precedence, the bodies
of macros that are intended to be used as values should always
be enclosed in an outer set of parentheses, if they contain more than
one term.
Change-Id: If175b1977b9452a7507c5906e4e611eccafb4d67
Reviewed-on: https://gerrit.openafs.org/12143 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Chas Williams <3chas3@gmail.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Benjamin Kaduk [Wed, 4 Mar 2015 18:34:53 +0000 (13:34 -0500)]
configure: check for some more krb5 functions
We will want to create a krb5_principal object that is used
as a sigil for comparison against, and need to do so in a portable
fashion. krb5_parse_name and krb5_unparse_name have been around
for a long time, but the counterpart krb5_free_unparsed_name is
not always available, so provide compatibility for it.
krb5_free_keytab_entry_contents is only a symbol in MIT krb5;
we will need a compat macro on Heimdal systems where it is not present.
Change-Id: I1cfe12910adac39216b8c7dd337b7e22d73555ed
Reviewed-on: https://gerrit.openafs.org/11785 Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Michael Meffie [Thu, 5 Nov 2015 21:29:05 +0000 (16:29 -0500)]
roken: do not include the rk_rename() implementation on unix
libroken provides roken/rename.c for platforms where the native rename()
implementation does not replace the target if it already exists. As designed,
rk_rename() should be used instead of rename() everywhere and rk_rename()
is #defined to be rename() on platforms where this fix is not necessary.
Do not include the rk_rename() implementation on platforms which do not need
the rk_rename since it is not used on those platforms.
Note: This fix also avoids a recursive rename(). As currently implemented, the
rk_rename() function is redefined to rename() within the roken/rename.c module
when RENAME_DOES_NOT_UNLINK is not defined. This can mask the standard library
rename() and leads to a recursive call to rename().
Change-Id: I47a1fcd21939b161aaa7df7ffab26dc84e7b75ed
Reviewed-on: https://gerrit.openafs.org/12091 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Michael Meffie [Fri, 6 Feb 2015 16:33:48 +0000 (11:33 -0500)]
externalize log rotation
Do not create new server log files when servers are restarted by
default. External log rotation tools may be used to rotate the logs by
renaming log files and then signaling server processes to reopen
log files.
Add the -transarc-logs option to each server to provide backward
compatibility with the traditional Transarc-style logging. When
-transarc-logs is given, log files are renamed to an ".old" file
(overwriting the existing ".old" file) and the previous the log file is
truncated.
Michael Meffie [Fri, 6 Feb 2015 15:56:43 +0000 (10:56 -0500)]
util: reopen server logs on SIGUSR1 for external log rotation
Claim the SIGUSR1 signal for reopening server log files. A server
process will reopen the log file when the SIGUSR1 signal is received.
If the log file does not exist, the server process will create a new,
empty log file.
This allows external log rotation programs to rotate log files by
renaming an existing log file then sending a SIGUSR1 signal to the
corresponding server process. Any messages written to the log after the
log file was renamed but before the SIGUSR1 signal is received will
continue to be written to the renamed log file. The server process will
write messages to the new log file after handling the SIGUSR1 signal.
The SIGUSR1 signal is used to reopen the log file instead of the more
commonly used SIGHUP signal, since SIGHUP is already used for resetting
the logging level.
The retirement of Linux 2.4 support, in particular the desupport of
LinuxThreads, in commit ccf353ede6ef5cce7c562993d1bea0d20844bdb7 allows
for the use of SIGUSR1 in OpenAFS.
Michael Meffie [Wed, 6 Jan 2016 22:06:54 +0000 (17:06 -0500)]
Remove server logging globals
Remove the global variables used to setup server logging and replace
with an argument to OpenLog.
Keep the LogLevel variable as a global for use by the logging macros,
but provide an inline function for applications which check the log
level to dump more information when the log level is increased.
Provide consistency by adding syslog tags to processes that did not
previously set one (salvageserver, salvager, and volserver).
[kaduk@mit.edu: update commit message, use old-style log rotation for
kalog, minor commenting fixes]
Michael Meffie [Thu, 5 Feb 2015 21:59:52 +0000 (16:59 -0500)]
Reopen the correct filename when -logfile is given
The name of the log file passed to ReOpenLog() may not match the name
given in the initial OpenLog() call. This can happen when the -logfile
option is given to the fileserver or volume server.
Since the name given to ReOpenLog() must match the original name, change
ReOpenLog() to use the name previously given to OpenLog() and update all
callers.
Michael Meffie [Wed, 4 Feb 2015 17:19:32 +0000 (12:19 -0500)]
util: always reopen the log file
Reopen the log file even if the filename exists. This fixes the
situation where an external program moves or deletes the log
file, then creates a new file with the same log file name.
Michael Meffie [Thu, 5 Feb 2015 15:47:32 +0000 (10:47 -0500)]
util: refactor OpenLog and ReOpenLog
Non-functional changes and cleanups in preparation for fixes and
enhancements.
Move the duplicated code to redirect the stdio/stderr streams to a common
static function. Add a helper function to check for named pipes. Move the
code to rename files when opening logs to a separate static function.
Benjamin Kaduk [Mon, 21 Dec 2015 04:11:23 +0000 (22:11 -0600)]
util: Remove undocumented magic of mrafs-style logs
The MR-AFS-style logs would always include the thread number in
log entries with the timestamp; now that we are trying to rebrand
this feature as "timestampped logs", having this bonus feature
is unexpected.
Thread ids are still used at higher log levels, as enabled by SIGTSTP.
Michael Meffie [Thu, 5 Feb 2015 20:42:16 +0000 (15:42 -0500)]
util: fix file descriptor leak in mrafs-style logging
When MR-AFS style logging is in effect, the SIGHUP signal handler will rename
then create a new, empty server log file to support log rotation.
Unfortunately, the old log file descriptor is not closed, so each SIGHUP
signal will leak one file descriptor.
Be sure to close the current log file descriptor before opening the log again.
The OpenLog() routine will move the current log file to a new file, with a
timestamp string appended to the log file, then open the server log file with
truncate flag to start a new log file.
Michael Meffie [Sun, 13 Mar 2016 21:27:59 +0000 (17:27 -0400)]
util: fix log file renaming of mrafs-style logs
Do not make timestamped log files with an invalid number of seconds when
renaming old mrsafs-style log files, i.e., more than 59 seconds in the
seconds field.
Replace the goto used in the mrafs-style make file name retries with a
regular, bounded loop.
Michael Meffie [Mon, 14 Mar 2016 20:09:56 +0000 (16:09 -0400)]
util: allocate log filename buffers
Allocate the ourName buffer to save the log filename during OpenLog(),
instead of trying to copy the log filename to a fixed size buffer.
Deallocate this buffer when the log is closed with CloseLog(). Save the
log file name even when MR-AFS style logging is not effect to allow
ReOpenLog() to use the saved filename in a later commit.
Dynamically allocate a buffer when formatting a file name for log
rotation instead of using a fixed size buffer on the stack. Allocate
the buffer for both traditional Transarc-style log file renaming
(appending ".old" to the log filename) and the MR-AFS style logging
(appending a timestamp to the log filename).
Michael Meffie [Sun, 13 Mar 2016 20:55:48 +0000 (16:55 -0400)]
util: open mrafs-style logs with O_APPEND too
Commit b71a041364d28d6a56905a770cd20d1497ee26ec added the O_APPEND flag when
opening the log file to allow sites to use logrotate's "copy and truncate"
feature.
Add the O_APPEND to MR-AFS style logs as well so MR-AFS style logs can also be
handled correctly with logrotate, we have consistent open flags, and can remove
a duplicate call to open the log file descriptor.
Michael Meffie [Sun, 1 Feb 2015 21:53:26 +0000 (16:53 -0500)]
util: remove obsolete SETVBUF_REVERSED
Commit 8af5762909714367c1cc764b3f491c06c2bcd5d0 "Clean up some
obsolete Autoconf code" removed the obsolete autoconf check
AC_FUNC_SETVBUF_REVERSED and one use of the results, but
overlooked another instance; remove it.
Change-Id: Id62a2a96b911c0d16d51d8cce0966ae3736bde87
Reviewed-on: https://gerrit.openafs.org/11718 Reviewed-by: Chas Williams <3chas3@gmail.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Reviewed-by: Perry Ruiter <pruiter@sinenomine.net> Tested-by: BuildBot <buildbot@rampaginggeek.com>
Michael Meffie [Wed, 2 Sep 2015 20:33:46 +0000 (16:33 -0400)]
ptserver: convert the ptserver to opr softsig
Convert the ptserver from regular signal handling to the opr soft
signal handling when built with pthreads. This makes it safe to call
pthread functions within signal handlers.
Change-Id: I43d345517c75e275d6896154a979a908181a1f39
Reviewed-on: https://gerrit.openafs.org/11997 Reviewed-by: Perry Ruiter <pruiter@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: BuildBot <buildbot@rampaginggeek.com>
Michael Meffie [Wed, 2 Sep 2015 20:32:54 +0000 (16:32 -0400)]
vlserver: convert the vlserver to opr softsig
Convert the vlserver from regular signal handling to the opr soft
signal handling when built with pthreads. This makes it safe to call
pthread functions within signal handlers.
Change-Id: Ic9bd841c4796bd64b603505541da7e767afda83e
Reviewed-on: https://gerrit.openafs.org/11996 Reviewed-by: Perry Ruiter <pruiter@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: BuildBot <buildbot@rampaginggeek.com>
Michael Meffie [Wed, 2 Sep 2015 20:28:43 +0000 (16:28 -0400)]
volser: convert the volume server to opr softsig
Convert the volume server from regular signal handling to the opr soft
signal handling when built with pthreads. This makes it safe to call
pthread functions within signal handlers.
Change-Id: I25b9a9184c526f4ce9b6e2abb25ae9135cc97ec6
Reviewed-on: https://gerrit.openafs.org/11995 Reviewed-by: Perry Ruiter <pruiter@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: BuildBot <buildbot@rampaginggeek.com>
Michael Meffie [Mon, 29 Jun 2015 15:03:16 +0000 (11:03 -0400)]
viced: remove old signal handler wrappers
Remove remnants of old lwp thread signal handler wrapper functions from
the fileserver. The lwp softsig handlers required a function which was
passed a void pointer argument and returned a void pointer. Tidy the
code by removing the unneeded wrappers and use the signal handler
functions directly.
Change-Id: I3d52efe659b03ee9a9484ec7a9d74404f1970278
Reviewed-on: https://gerrit.openafs.org/11921 Reviewed-by: Chas Williams <3chas3@gmail.com> Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: BuildBot <buildbot@rampaginggeek.com>
Michael Meffie [Thu, 31 Mar 2016 20:39:48 +0000 (16:39 -0400)]
util: softsig version of function to setup logging signal handlers
Provide a new routine to setup the server log signals which registers
soft signal handlers for the common log management signals (SIGTSTP and
SIGHUP). Keep the old SetupLogSignals() routine around while lwp still
exists.
Michael Meffie [Thu, 31 Mar 2016 20:37:42 +0000 (16:37 -0400)]
procmgmt: wrappers for softsig handlers
Provide procmgmt wrappers for Windows environments which match the opr_softsig
functions. This allows builds of the windows servers continue to use the
existing process management signal handling functions, without introducing
additional conditional compilation in the server code.
Michael Meffie [Thu, 10 Sep 2015 01:26:23 +0000 (21:26 -0400)]
salvager: convert salvager and salvagerserver to libutil logging
Use the libutil logging facility in the salvager and DAFS salvageserver
in order to have consistent logging features and time stamp formats with
the other OpenAFS servers.
Michael Meffie [Thu, 27 Aug 2015 17:06:05 +0000 (13:06 -0400)]
afs: shake harder in shake-loose-vcaches
Linux based cache managers will allocate vcaches on demand and
deallocate batches of vcaches in the background. This feature is called
dynamic vcaches.
Vcaches to be deallocated are found by traversing the vcache LRU list
(VLRU) from the oldest vcache to the newest. Up to a target number of
vcaches are attempted to be evicted. The afs_xvcache lock protecting
the VLRU may be dropped and re-acquired while attempting to evict a
vcache. When this happens, it is possible the VLRU may have changed, so
the traversal of the VLRU is restarted. This restarting of the VLRU
transversal is limited to 100 iterations to avoid looping indefinitely.
Vcaches which are busy cannot be evicted and remain in the VLRU. When a
busy cache was not evicted and the afs_xvache lock was dropped, the VLRU
traversal is restarted from the end of the VLRU. When the busy vcache is
encountered on the retry, it will trigger additional retries until the
loop limit is reached, at which point the target number of vcaches will
not be deallocated.
This can leave a very large number of unbusy vcaches which are never
deallocated. On a busy machine, tens of millions of unused vcaches can
remain in memory. When the busy vcache at the end of the VLRU is finally
evicted, the log jam is broken, and the background deamon will hold the
afs_xvcache lock for an excessively long time, hanging the system.
Fix this by moving busy vcaches to the head of the VLRU before
restarting the VLRU traversal. These busy vcaches will be skipped when
retrying the VLRU traversal, allowing the cache manager to make progress
deallocating vcaches down to the target level.
This was already done on the mac osx platform while attempting to evict
vcaches. Move the code to move busy vcaches to the head of the VLRU up
the the platform agnostic caller.
Thanks to Andrew Deason for the initial version of this patch.
Change-Id: I7768d00604e56d8d5369ac5215f7c2ab7996c4eb
Reviewed-on: https://gerrit.openafs.org/11654 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Andrew Deason <adeason@dson.org> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Michael Meffie [Thu, 25 Feb 2016 23:49:20 +0000 (18:49 -0500)]
LINUX: hold vcache while dropping dcache refs
Hold a reference on a vcache while attempting to evict the inode from
the dcache. Since the afs_xvcache lock is dropped, it could be possible
for the vcache to be flushed during this time, making it unsafe to use
the vcache after the eviction attempt.
Change-Id: I9d91db98387b7aaa986ed915420c6cafb4f12438
Reviewed-on: https://gerrit.openafs.org/12206 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Andrew Deason <adeason@dson.org> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Stephan Wiesand [Thu, 7 Apr 2016 08:58:30 +0000 (10:58 +0200)]
Linux: Fix misleading indentation and other whitespace
Commit 7edc6694e7632c9736bd1516935604a638165313 introduced a
misleading indentation of a line in afs_linux_prefetch. Correct
it, and once here remove trailing whitespace throughout the file.
Stephan Wiesand [Tue, 8 Mar 2016 13:15:17 +0000 (14:15 +0100)]
Linux 4.4: Do not use splice()
splice() may return -ERESTARTSYS if there are pending signals, and
it's not even clear how this should be dealt with. This potential
problem has been present for a long time, but as of Linux 4.4
(commit c725bfce7968009756ed2836a8cd7ba4dc163011) seems much more
likely to happen.
Until resources are available to fix the code to handle such errors,
avoid the riskier uses of splice().
If there is a default implementation of file_splice_{write,read},
use that; on somewhat older kernels where it is not available,
use the generic version instead.
[kaduk@mit.edu: add test for default_file_splice_write]
Change-Id: Ib4477cdfb2cd0f49f516da75edc3cb9d1a8817dc
Reviewed-on: https://gerrit.openafs.org/12217 Reviewed-by: Chas Williams <3chas3@gmail.com> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: BuildBot <buildbot@rampaginggeek.com>
Michael Laß [Mon, 18 Jan 2016 17:29:00 +0000 (18:29 +0100)]
Linux 4.4: key_payload has no member 'value'
In Linux 4.4 (146aa8b1453bd8f1ff2304ffb71b4ee0eb9acdcc) type-specific and
payload data have been merged. The payload is now accessed directly and has
no 'value' member anymore.
FIXES 132677
Change-Id: Id26c40c80314a0087ecc0735029412787058ef07
Reviewed-on: https://gerrit.openafs.org/12169 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Tested-by: Mark Vitale <mvitale@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Chas Williams [Mon, 23 Nov 2015 19:15:08 +0000 (14:15 -0500)]
rxgen: Don't use size_t in struct rx_opaque with XDR
OpenAFS's XDR doesn't support size_t at this time. For now, use a
temporary stack variable to avoid 32/64-bit issues and copy back the
returned value upon success.
Change-Id: Ia3dd8abd665a19e04aa611f940728d088a8f87b7
Reviewed-on: https://gerrit.openafs.org/12115 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Michael Meffie <mmeffie@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Michael Meffie [Fri, 18 Mar 2016 14:22:33 +0000 (10:22 -0400)]
doc: fs examine no longer requires read rights on the volume root vnode
Update the man page to reflect the current access rights required for fs
examine. Historically, fs examine required read access on the root
vnode of the volume housing the directory or file being examined. This
access check was relaxed in commit d2d591caf2c9b4cf2ebae708cc9b4c8b78ca5a5a,
since the information returned by the file server is already available
anonymously by other means.
Change-Id: If62b625bce8a260b98fb56a6feec49c674f2de53
Reviewed-on: https://gerrit.openafs.org/12223 Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: Benjamin Kaduk <kaduk@mit.edu>
projects / packages / o / openafs.git / log