NeilBrown [Tue, 1 May 2012 19:24:39 +0000 (15:24 -0400)]
4set_root: force "fsid=0" for all exports of '/'
When "fsid=0" is not explicitly given in /etc/exports,
v4set_root creates a pseudo (NFSEXP_V4ROOT) export for '/'
with fsid 0 so that an NFSv4 client can find the root.
However if '/' is explicitly exported to the client, then that
explicit export must be used, and it will not have fsid=0.
So we must impose fsid=0 on all exports of '/'.
Without this, if '/' is exported to a client, that client will
not be able to mount '/' with NFSv4.
Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Steve Dickson <steved@redhat.com>
NeilBrown [Tue, 1 May 2012 19:22:57 +0000 (15:22 -0400)]
nfsd_fh: if two exports are possible, choose the one without V4ROOT
When nfsd_fh it looking for an export for a particular
client and file-handle, it might find two exports for the same path:
one with NFSEXP_V4ROOT, one with out.
As nfsd_fh calls cache_export_ent to give the export information to
the kernel it much choose the same export that auth_authenticate
chooses for get_rootfh which it also passes cache_export_ent (via
cache_export).
i.e. it must choose the non-V4ROOT on where possible.
Also change
strcmp(foo, bar)
to
strcmp(foo, bar) == 0
because I have a pathological fear of the former.
Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Steve Dickson <steved@redhat.com>
NeilBrown [Tue, 1 May 2012 19:20:31 +0000 (15:20 -0400)]
auth_authenticate_newcache: prefer non-V4ROOT export over V4ROOT exports
Currently auth_authenticate_internal finds an export and if it
is a V4ROOT export, it reports that there is no match. Unlike
lookup_export() it doesn't keep looking for an acceptable export.
So remove the test from auth_authenticate_internal(), and add it to
auth_authenticate_newcache(), where the search can be allowed to
continue.
Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Steve Dickson <steved@redhat.com>
NeilBrown [Tue, 1 May 2012 19:14:43 +0000 (15:14 -0400)]
lookup_export: really prefer nonV4ROOT exports.
lookup_export() claims to "Always prefer non-V4ROOT mounts" (meaning
"exports") but actually prefers V4ROOT exports - once it has 'found'
one it will never replace it.
So fix that inversion, and add code so that it proactively prefers a
non-V4ROOT whether it is found before or after a V4ROOT.
Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Steve Dickson <steved@redhat.com>
mountd uses colons to split fsloc hosts, but this doesn't work with IPv6
addresses (they contain ':').
To fix this, mountd is changed to expect all IPv6 addresses to be escaped
by '[' and ']' so colons that are part of the address may be skipped.
To fix IPv6 referrals, this patch must be used with the nfsd patch that
properly parses escaped IPv6 addresses in fs_location->hosts.
Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Sachin Bhamare [Tue, 1 May 2012 18:36:51 +0000 (14:36 -0400)]
osd_login: Add autologin script for objlayoutdriver
From: Sachin Bhamare <sbhamare@panasas.com>
This script is part of the autologin feature mandated by the
pnfs-objects standard.
It is called from objlayoutdriver.ko in the kernel.
It invokes iscsiadm program to perform the iscsi login to OSDs.
It also features a watchdog which will make sure that control
returns to kernel after 15s timeout.
Jeff Layton [Thu, 26 Apr 2012 15:54:37 +0000 (11:54 -0400)]
nfsdcld: make it watch for inotify events in the containing directory
Before opening the pipe, set an inotify watch on the containing dir and
then try to open the pipe. If it succeeds, then set up pipe and inotify
events and return success. If it fails with -ENOENT, then just set up
the inotify event and return success. If it fails with any other error
then return the error and the caller can then abort the program.
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Jeff Layton [Thu, 26 Apr 2012 15:48:52 +0000 (11:48 -0400)]
nfsdcld: add function to remove unreclaimed client records
This should remove any client record that has a timestamp prior to
the given time.
Eventually, this call will need to be made cluster aware when this is
run in a clustered configuration. For now, this is only suitable for
single-host configurations.
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Jeff Layton [Thu, 26 Apr 2012 15:47:58 +0000 (11:47 -0400)]
nfsdcld: add check/update functionality
Add functions to check whether a client is allowed to reclaim, and
update its timestamp in the DB if so. If either the query or update
fails, then the host is not allowed to reclaim state.
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Jeff Layton [Thu, 26 Apr 2012 15:43:30 +0000 (11:43 -0400)]
nfsdcld: add routines for a sqlite backend database
Rather than roll our own "storage engine", use sqlite instead. It fits
the bill nicely as it does:
- durable on-disk storage
- the ability to constrain record uniqueness
- a facility for collating and searching the host records
...it does add a build dependency to nfs-utils, but almost all modern
distros provide those packages.
The current incarnation of this code dynamically links against a
provided sqlite library, but we could also consider including their
single-file "amalgamation" to reduce dependencies (though with all
the caveats that that entails).
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Jeff Layton [Thu, 26 Apr 2012 15:29:22 +0000 (11:29 -0400)]
nfsdcld: add autoconf goop for sqlite
Mostly cribbed from Chuck Lever's new-statd rewrite a few years ago...
This adds an autoconf test for the sqlite3 library and includes. If
they're not working properly and nfsdcld was enabled, then configure
will error out.
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Jeff Layton [Thu, 26 Apr 2012 15:22:46 +0000 (11:22 -0400)]
nfsdcld: add client tracking daemon stub
This program opens and "listens" on the new nfsd/cld rpc_pipefs pipe.
The code here doesn't actually do anything on stable storage yet. That
will be added in a later patch.
The patch also adds a autoconf enable switch for the new daemon that
defaults to "no", and a test for the upcall description header file.
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Michael Weiser [Mon, 16 Apr 2012 10:49:21 +0000 (06:49 -0400)]
Add -l option to gssd to force legacy behaviour
Implement a new option -l to force gssd to ignore its kernel's crypto
capabilities and use just the Single DES legacy encryption types to be
compatible with old servers. This is only relevant if those servers have
strong keys in their keytab.
Signed-off-by: Steve Dickson <steved@redhat.com> Tested-by: Michael Weiser <weiser@science-computing.de>
Steve Dickson [Thu, 26 Jan 2012 19:56:13 +0000 (14:56 -0500)]
rpc.gssd: Links directly with libgssapi_krb5 which not needed.
rpc.gssd and rpc.svcgssd both link with the libgssapi_krb5 and
libgssglue libraries which is not needed since libgssglue
will dynamically load the gssapi interface defined in the
/etc/gssapi_mech.conf. Most likely the libgssapi_krb5 library.
Steve Dickson [Thu, 22 Mar 2012 15:02:46 +0000 (11:02 -0400)]
gssd: Look for user creds in user defined directory
The user credential cache currently is kept in /tmp.
In upcoming Kerberos release that will be moved to
/run/user/<username>/. This patch enables gssd to
look in both the old and new caches
Noah Friedman [Thu, 15 Mar 2012 16:52:50 +0000 (12:52 -0400)]
rpc.idmap: Hide global symbols from libidmap plugins
This patch limits the visibility of the symbols in the nfs-utils
conffile.c so that they are only visible to programs linked directly to
it. This forces the objects dynamically loaded via libnfsidmap to use
the functions defined in that shared library instead.
Steve Dickson [Mon, 12 Mar 2012 17:17:15 +0000 (13:17 -0400)]
exportfs: Stop racing exportfs on clusters
This problem can occur when multiple cluster services fail over
at the same time, causing missing high-available exports.
Having a lot of nfs-exports will trigger this issue easier.
Steve Dickson [Tue, 6 Mar 2012 16:03:38 +0000 (11:03 -0500)]
nfsmount: Fixed parsing error in the nfsmount.conf code.
When the options where prefixed with spaces (instead of tabs)
the second option in the list was missed to so a miscalculation
the the nfsmount.conf parsing code.
Signed-off-by: Harshula Jayasuriya <harshula@redhat.com> Acked-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Jeff Layton [Mon, 16 Jan 2012 19:39:25 +0000 (14:39 -0500)]
autoconf: only link binaries that need it to libtirpc
This patch is essentially the same as the previous version, but has
been respun to fix up some merge conflicts with some of Chuck's
recent changes.
When we first added tirpc support, we took a "big hammer" approach, and
had it add libtirpc to $LIBS. That had the effect of making it so that
that library was linked into every binary. That's unnecessary, and
wasteful with memory.
Don't let AC_CHECK_LIB add -ltirpc to $LIBS. Instead, have the autoconf
tests set $(LIBTIRPC) in the makefiles, and have the programs that
need it explicitly include that library. In the event that we're not
using libtirpc, then set $LIBTIRPC to a blank string.
This necessitates a change to the bindresvport_sa check too. Since that
library is no longer included in $LIBS, we need to convert that check
to use AC_CHECK_LIB instead of AC_CHECK_FUNCS.
This patch also fixes a subtle bug. If the library was usable, but the
includes were not, the test would set $enable_tirpc to "no", but
HAVE_LIBTIRPC would still be true. That configuration would likely
fail to build.
Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Steve Dickson [Thu, 12 Jan 2012 20:09:49 +0000 (15:09 -0500)]
nfsidmap: Purge the keyring when its full.
When a key can not be added to a keyring because
the keyring is full or there is no memory for
the playload, keyctl_instantiate() will fail
and set the errno to -EDQUOT, -ENFILE or
-ENOMEM
When this happens, purge the keyring to
free things up and then try to re-add
the key.
Chuck Lever [Thu, 5 Jan 2012 21:24:16 +0000 (16:24 -0500)]
mountd: Support junction management plug-ins
To support FedFS and NFS junctions without introducing additional
build-time or run-time dependencies on nfs-utils, the community has
chosen to use a dynamically loadable library to handle junction
resolution.
There is one plug-in library for mountd that will handle any NFS-
related junction type. Currently there are two types:
o nfs-basic locally stored file set location data, and
o nfs-fedfs file set location data stored on an LDAP server
mountd's support for this library is enabled at build time by the
presence of the junction API definition header:
/usr/include/nfs-plugin.h
If this header is not found on the build system, mountd will build
without junction support, and will operate as before.
Note that mountd does not cache junction resolution results. NFSD
already caches these results in its exports cache. Thus each time
NFSD calls up to mountd, it is, in essence, requesting a fresh
junction resolution operation, not a cached response.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Chuck Lever [Thu, 5 Jan 2012 21:03:08 +0000 (16:03 -0500)]
mountd: remove newline from xlog() format specifier strings
Clean up: xlog() already adds a newline to the end of each line of
output. Remove the superfluous newline from a number of xlog()
call sites in mountd.
Chuck Lever [Thu, 5 Jan 2012 21:01:22 +0000 (16:01 -0500)]
mountd: Plug v4root memory leak
Valgrind reports that the memory allocated for eep's e_hostname field
was not being freed. eep is not visible outside of v4root_create(),
so we don't need to strdup() that string.
Introduced by commit 3b777b0 "exports: NFSv4 pseudoroot support
routines" (Dec 1, 2009).
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Chuck Lever [Thu, 5 Jan 2012 20:54:00 +0000 (15:54 -0500)]
configure.ac: Don't check for AI_ADDRCONFIG
Commit 1ea2c3be: "nfs-utils: Remove all uses of AI_ADDRCONFIG,"
(October 28, 2010) removed the last use of AI_ADDRCONFIG. Even so,
ipv6.m4 uses this check to ensure that the local getaddrinfo(3)
implementation is recent. Maybe we shouldn't bother.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Karel Zak [Thu, 5 Jan 2012 18:32:26 +0000 (13:32 -0500)]
mount.nfs: don't overwrite mount options from /etc/nfsmount.conf
The libmount (as well as mount(8)) ignores mount options from command
line if running in restricted mode (suid, non-root-user) and all
options are read from fstab only.
It means that all options are replaced with stuff from fstab,
including mount options from nfsmount.conf. This is bug.
We have to apply fstab and then nfsmount.conf.
Signed-off-by: Karel Zak <kzak@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Steve Dickson [Mon, 5 Dec 2011 14:48:46 +0000 (09:48 -0500)]
mount.nfs: Background mounts failing on time out errors.
Mounting with the "-o v3,bg,proto=udp" options will
fail, instead of retrying, when the server is down.
The reason being nfs_rewrite_pmap_mount_options()
does not interrupt RPC timeouts correctly.
Steve Dickson [Mon, 14 Nov 2011 14:47:21 +0000 (09:47 -0500)]
nfsidmap: Added -v and -t flags
To aid in debugging, the -v flag can now be specified,
multiple time, on the command line to enable verbose
logging in both the nfsidmap command and libnfsidmap
library routines.
Also converted the timeout argument to use a -t flag.
Yang Bai [Tue, 18 Oct 2011 15:53:11 +0000 (11:53 -0400)]
mount.nfs: Mount should really return from errno test
We should only try next address family if we meet ECONNREFUSED or
EHOSTUNREACH for v4 or ECONNREFUSED or EOPNOTSUPP or EHOSTUNREACH for v3v2.
Before, only a break in swich can not make the program out of for loop.
Signed-off-by: Yang Bai <hamo.by@gmail.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Luca Giuzzi [Tue, 4 Oct 2011 17:35:06 +0000 (13:35 -0400)]
rpc.idmapd: Dies with 'I/O possible'
We have had problems on some of our machines (all Fedora 14), where
rpc.idmapd used to die with an `I/O possible' message at (basically)
random times. A strace suggested the issue being in nfsopen() where a
signal type is reset before notification is disabled; a signal at just
the right time might be the cause of the problem; see
https://bugzilla.redhat.com/show_bug.cgi?id=684308
Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Luk Claes [Mon, 3 Oct 2011 12:42:20 +0000 (08:42 -0400)]
blkmapd: Use getconf(_SC_PAGE_SIZE)
PAGE_SIZE is not exported by all architectures as it is not fixed: it
can depend on the model of the machine. So it's better to query the
system configuration for the actual page size on the machine.
Signed-off-by: Luk Claes <luk@debian.org> Signed-off-by: Steve Dickson <steved@redhat.com>
Steve Dickson [Wed, 21 Sep 2011 18:05:07 +0000 (14:05 -0400)]
mountstats: Breaks on 3.1 kernels
mountstats depend on all devices entries in /proc/self/mountstats
to start with the word 'device'. With 3.1 kernels, NFS entries
start with the actual device (i.e. server:/export) not
the word 'device'. This change confused mountstats parsing.
Steve Dickson [Wed, 21 Sep 2011 17:52:49 +0000 (13:52 -0400)]
nfsiostat: Breaks on 3.1 kernels
nfsiostat depend on all devices entries in /proc/self/mountstats
to start with the word 'device'. With 3.1 kernels, NFS entries
start with the actual device (i.e. server:/export) not
the word 'device'. This change confused nfsiostat parsing.
The decoded octal will always be positive and (char) -1 is negative. Any
field containing an encoded octal will be rejected.
As the encoded value should be an unsigned char, fix the check to reject
all values > (unsigned char) -1 = UCHAR_MAX, as this indicate an error
in the encoding.
Signed-off-by: Jan-Marek Glogowski <glogow@fbihome.de> Signed-off-by: Steve Dickson <steved@redhat.com>
Steve Dickson [Tue, 20 Sep 2011 16:52:46 +0000 (12:52 -0400)]
statd: Decouple statd's state directory from the NFS state directory
To allow greater flexibility to where statd's state is kept,
statd's state path can now be decoupled from the normal
NFS state directory.
In configure.ac, the NSM_DEFAULT_STATEDIR definition will now define
the path to where the state information is kept. The default
value, /var/lib/nfs, can be redefined with the --with-statdpath
flag.
Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
J. Bruce Fields [Tue, 20 Sep 2011 11:40:15 +0000 (07:40 -0400)]
nfsd: allow choosing server 41 support at runtime
In the case where -N 4.1 is left off the commandline, the current code
explicitly turns it on or off anyway, depending on configure options.
Instead, just leave 4.1 support alone. This allows a user to add an
"echo +4.1 >/proc/fs/nfsd/versions" to their init scripts, if they want.
Otherwise they will get the kernel's default (currently to leave 4.1
off, as long as 4.1 support is experimental).
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Steve Dickson <steved@redhat.com>
Chuck Lever [Mon, 19 Sep 2011 18:23:54 +0000 (14:23 -0400)]
sm-notify: sm-notify leaves monitor records in sm.bak
sm-notify fails to remove monitor records from sm.bak when it has
finally notified a host. This is because of a recent change to send
two SM_NOTIFY requests for each monitored peer: one with the local
host's FQDN, and one with an unqualified version of same. This was
commit baa41b2c: "sm-notify: Send fully-qualified and unqualified
mon_names" (March 19, 2010).
Because of the March 2010 commit, sm-notify modifies the "my_name"
string during notification, but then uses this modified string to try
to find the monitor record to remove. Of course the search for the
record fails. So a persistent monitor record is left in sm.bak.
Aside from leaving trash around, this causes the same hosts to be
notified after every reboot, even if they successfully responded to
the previous SM_NOTIFY and they had no contact with us during the last
boot.
I also noticed that the trick of truncating the argument of SM_NOTIFY
doesn't work at all if a substitute "my_name" was specified via the "-v"
command line option. This patch attempts to address that as well.
sm-notify should preserve the original my_name string so that
nsm_delete_host() can find the correct monitor record to delete. Also
add some degree of protection to the mon_name and my_name strings in
each nsm_host record to prevent a future change from breaking this
dependency.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Chuck Lever [Mon, 19 Sep 2011 18:20:25 +0000 (14:20 -0400)]
sm-notify: Avoid extra rpcbind queries
The logic in notify_host() watches the host->retries counter to see if
progress is not being made. If progress stalls, notify_host() tries
another IP address. This means sm-notify will generate a fresh
rpcbind query.
After an RPC succeeds, be sure to reset host->retries so sm-notify
doesn't start walking down the host's addrinfo list when we _are_
making progress. In the common case, if the host responds, we avoid
extra rpcbind queries and send all requests for the host to the same
IP address.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Chuck Lever [Mon, 19 Sep 2011 18:18:47 +0000 (14:18 -0400)]
sm-notify: Use correct retransmit timeout when sending a fresh RPC
An RPC retransmit timeout should start out the same for each new RPC
request. Don't increase the retransmit timeout after receiving the
reply to the rpcbind query.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Chuck Lever [Mon, 19 Sep 2011 18:10:08 +0000 (14:10 -0400)]
nfsumount: Squelch compiler warning
nfsumount.c: In function nfs_umount_is_vers4:
nfsumount.c:164: warning: conversion to int from size_t may alter its value
nfsumount.c:173: warning: conversion to ?size_t? from int may change the sign of the result
Chuck Lever [Mon, 19 Sep 2011 18:02:10 +0000 (14:02 -0400)]
configure.ac: Fix help string for --with-statedir= option
The help string for --with-statedir attempts to show "/var/lib/nfs" in
square brackets, but they don't appear on my system (Fedora 13). Use
the AC_HELP_STRING macro to display the help string properly, like all
the other "with" and "enable" options specified in our configure.ac.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Mike Frysinger [Thu, 1 Sep 2011 15:34:25 +0000 (11:34 -0400)]
exportfs: do not warn if /etc/exports.d/ does not exist
It isn't uncommon for /etc/exports.d/ to not exist, and imo, it's not
that big of a deal as often times, a simple /etc/exports is sufficient.
So silently skip the case where the dir is missing.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Steve Dickson <steved@redhat.com>
It looks like the existing algorithm for verifying the passed-in bind
address is as broken as statd_matchhostname() used to be: for IP
addresses, AI_CANONNAME is useless. We need to have getnameinfo(3) or
equivalent in there.
Clean up: extract the logic that verifies the command line bind
address into its own function, and make it handle canonical name
lookup correctly.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Same change as statd_matchhostname() is necessary for the logic in
exportfs.
Recall that these are "separate but nearly equal" because the exportfs
version requires extra expensive string checking that would be onerous
for statd.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
The job of statd_matchhostname() is to work hard at matching two
hostnames or presentation IP addresses that may refer to the same
host.
statd_matchhostname() turns the hostname of the local system into a
list of addresses containing only the loopback address. The actual
DNS registered address of the system does not appear in that list.
Presentation IP addresses, on the other hand, are soundly ignored by
the AI_CANONNAME option of getaddrinfo(3). The ai_canonname string
that is returned is just the same presentation IP address. And the
resulting list of addresses contains just that IP address.
So if the DNS registered IP address of the local host is passed in as
one argument, and the local hostname is passed as the other argument,
statd_matchhostname() whiffs and believes there is no match. To fix
this, the logic needs to be smarter about deriving a hostname from an
IP address.
This appears to cause no end of trouble: monitor records pile up in
/var/lib/nfs/sm and sm.bak, notifications are missed, and so on. This
has likely been around since commit cbd3a131 "statd: Introduce statd
version of matchhostname()" (Jan 14, 2010).
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Chuck Lever [Mon, 29 Aug 2011 17:13:15 +0000 (13:13 -0400)]
sm-notify: Disable syslog messages when debugging is enabled
statd's "-F" flag disables syslog output, and specifies sm-notify's
"-d" option when it runs it. sm-notify's "-d" option should therefore
also disable syslog output.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Steve Dickson <steved@redhat.com>
NeilBrown [Mon, 29 Aug 2011 16:56:17 +0000 (12:56 -0400)]
pdate addres for Free Software Foundation
License texts contain multiple address for FSF, some wrong.
So update them and replace COPYING file with
http://www.gnu.org/licenses/gpl-2.0.txt
which has a few changes to preamble and commentary.
Also remove extra COPYING file from utils/statd/
Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Steve Dickson <steved@redhat.com>
Ian Kent [Mon, 29 Aug 2011 16:29:36 +0000 (12:29 -0400)]
umount.nfs: fix nfs4 check
From: Ian Kent <ikent@redhat.com>
nfs_umount_is_vers4() doesn't take acount of the escaping of characters
seen in /proc/mounts and /etc/mtab as the functions in fstab.c do. This
leads to an inability to umount a mount containing any of these escaped
characters (like spaces).
This patch changes nfs_umount_is_vers4() to use functions in fstab.c and
adds a function to fstab.c to read /proc/mounts specifically, as it was
used for the check in nfs_umount_is_vers4() previously.
Signed-off-by: Ian Kent <ikent@redhat.com> Signed-off-by: Steve Dickson <steved@redhat.com>
Luk Claes [Mon, 29 Aug 2011 15:46:17 +0000 (11:46 -0400)]
exports.man: Fix comment syntax
Using three single-quotes for a comment sort of works because it
results in invoking a nonexistent macro, but it results in a huge
number of warnings when trying to validate the man page.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Luk Claes <luk@debian.org> Signed-off-by: Steve Dickson <steved@redhat.com>
Max Matveev [Tue, 16 Aug 2011 11:57:43 +0000 (07:57 -0400)]
mount.nfs: submarvellous messages from mount.nfs
Consider a setup where mountd on the server is controlled via
tcp_wrappers (usual RHEL setup) and will not process calls from a
particular client because of something in /etc/hosts.deny.
When such client attempts to do v3 mount, the error message printed
by mount.nfs is misleading.
This patch changes that error message from:
mount.nfs: Argument list too long
to
mount.nfs: access denied by server while mounting server:/export
Chuck Lever [Wed, 3 Aug 2011 17:22:52 +0000 (13:22 -0400)]
rpc.statd: Bind downcall socket to loopback address
In the past, rpc.statd posted SM_NOTIFY requests using the same socket
it used for sending downcalls to the kernel. To receive replies from
remote hosts, the socket was bound to INADDR_ANY.
With commit f113db52 "Remove notify functionality from statd in
favour of sm-notify" (Mar 20, 2007), the downcall socket is no longer
used for sending requests to remote hosts. However, the downcall
socket is still bound to INADDR_ANY.
Thus a remote host can inject data on this socket since it is an
unconnected UDP socket listening for RPC replies. Thanks to f113db52,
the port number of this socket is no longer controlled by a command
line option, making it difficult to firewall.
We have demonstrated that data injection on this socket can result in
a DoS by causing rpc.statd to consume CPU and log bandwidth, but so
far we have not found a breach.
To prevent unwanted data injection, bind this socket to the loopback
address.
Fixed the usage of strcmp in the duplicate check in insert groups.
Fixes an issue with showmount and other commands that required
the group information.
Signed-off-by: Matthew Treinish <treinish@linux.vnet.ibm.com> Signed-off-by: Steve Dickson <steved@redhat.com>
projects / nfs-utils.git / log