| Commit message (Collapse) | Author | Age | Files | Lines |
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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
Introduced by commit 3564ebbf.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If NFS port (2049) is supplied explicitly, don't ignore this setting
by requesting it to portmapper again.
Signed-off-by: Luk Claes <luk@debian.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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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>
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Since xlog() itself appends a newline, we don't want to add our own
otherwise we get extra in the output.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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NFS/TCP does linear backoff then retransmiting - the manpage
was mistakenly asserting the "no backoff" theory.
Signed-off-by: Max Matveev <makc@redhat.com>
Signed-off-by: Jim Rees <rees@umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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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>
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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>
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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>
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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>
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Fix a debugging message to report correctly the count of hosts loaded
when statd starts up.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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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>
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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>
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sh -p is not guaranteed to be provided by POSIX shells. dash for
instance does not provide this, so use bash explicitly.
Signed-off-by: Luk Claes <luk@debian.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The groff macros for filling (word-wrapping) and tabulation control are
lower-case, but are written in upper-case here and so have been ignored.
Change the .NF and .FI lines to lower-case.
Change the .TA lines to lower-case and fix the tab stops to work both
on a terminal and in Postscript output.
Delete the .SP line where .sp would be redundant.
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>
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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>
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Fix syntax for line starting with 'visible' according to a patch from
Simon Paillard <spaillard@debian.org> in Debian bug #624261.
Signed-off-by: Luk Claes <luk@debian.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Fix "macro `local_lock=flock'.' not defined" by avoiding to put a quote
at the beginning of the line.
Signed-off-by: Luk Claes <luk@debian.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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man complains with "macro `d' not defined", so remove these seemingly
unneeded characters
Signed-off-by: Luk Claes <luk@debian.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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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
Signed-off-by: Steve Dickson <steved@redhat.com>
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The function mnt_fs_set_fs_options() has been removed from the final
version of the libmount API.
Signed-off-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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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.
BugLink: https://bugzilla.linux-nfs.org/show_bug.cgi?id=177
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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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>
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At RHEL, if user set port for mountd at /etc/services as
"mount 12345/tcp", mountd should be bind to 12345, but the
latest nfs-utils, mountd get a rand port, not 12345.
This patch make sure mountd be bind to the port which was set
at /etc/service.
Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Steve Dickson <steved@redhat.com>
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For the window of kernels between 2.6.35 (when the support
for newer encryption was added) and 2.6.39 (when the ability
to read the supported enctypes from the kernel was added),
use a default of all enctypes when the kernel supported
enctypes file cannot be read.
For kernels before 2.6.35, continue to use a default of
only DES enctypes.
Note that the version of Kerberos must also support the use of
gss_set_allowable_enctypes for service-side negotiations.
See also: http://bugzilla.redhat.com/show_bug.cgi?id=719776
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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I recently upgraded to 1.2.4 to use the new nfsidmap feature. While
following the manpage and the kernel documentation I noticed a
difference. Kernel docs mention key TYPE id_resolver while the manpage
states nfs_idmap. The following patch changes the manpage to the proper
type.
Signed-off-by: Steve Dickson <steved@redhat.com>
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mount.nfs segfaults if kernel version number does not contain
at least 3 components delimited with a dot.
Avoid this by matching up to three unsigned integers inialised
to zero, separated by dots.
A version that does not start with an integer is probably a future
version where the versioning evolved to another scheme.
Return UINT_MAX which is guaranteed to be higher than existing
versions. This would also make it possible to easily identify
versions that do not start with an integer.
Signed-off-by: Luk Claes <luk@debian.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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commit 30ebf047 failed to include these changes that breaks mount.nfs.
mount.nfs will continue to work fine with these changes
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Steve Dickson <steved@redhat.com>
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Currently souce and destination parameters should be passed as first and
second paramter while using mount.nfs. This patch allows them to be passed
anywhere while mounting.
Current functionality is
mount.nfs source destn -o <options>
This patch will allow to do this
mount.nfs -o <options> source destn
or
mount.nfs -o <options> source -o <options> destn
Signed-off-by: Prem Karat <prem.karat@linux.vnet.ibm.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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As mount.nfs can run setuid it must be careful about how the user can
interact with in. In particular it needs to ensure it does not
respond badly to any signals that the user might be able to generate.
This is particularly an issue while updating /etc/mtab (when that is
not linked to /proc/mounts). If the user can generate a signal which
kills mount.nfs while /etc/mtab is locked, then it will leave the file
locked, and could possibly corrupt mtab (particularly if 'ulimit 1'
was previously issued).
Currently lock_mtab does set some handlers for signals, but not
enough. It arranges for every signal up to (but not including)
SIGCHLD to cause mount.nfs to unlock mdadm promptly exit ... even if
the default behaviour would be to ignore the signal. SIGALRM is
handled specially, and signals after SIGCHLD are left with their
default behaviour. This includes for example SIGXFSZ which can be
generated by the user running "ulimit 1".
So: change this so that some signals are left unchanged, SIGALRM is
handled as required, and all signals that the user can generate are
explicitly ignored.
The remainder still cause mount.nfs to print a message, unlock mtab, and
exit.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Now we can move these big switch statements into helper functions.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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A large part of nfsd_fh() is concerned with extracting
fsid-type-specific information from the fsid, then matching that
information with information from the export list and the filesystem.
Moving all that information into one struct will allow some further
simplifications.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If a parent is exported with crossmnt, and if a child is also explicitly
exported, then both exports could potentially produce matches in this
loop; that isn't a bug.
Instead of warning and ignoring the second match we find, we should
instead prefer whichever export is deeper in the tree, so that
children's options can override those of their parents.
Reported-by: Olga Kornievskaia <aglo@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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A very minor change suggested by J. Bruce Fields <bfields@fieldses.org>
to remove the statement that exporting to a single host or IP address is
the "most common format" - as it probably isn't.
Signed-off-by: James Pearson <james-p@moving-picture.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The parts of the exports(5) manpage that discuss IP addressing neglect
IPv6 configuration. Update to include info on how to export to IPv6
subnets and addresses, and add a line demonstrating that to the EXAMPLE
section.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Benny Halevy <benny@tonian.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Added some verbiage to the exports(5) man page
that clearly explains the precedence around
how exports will work with regard to netgroups.
Signed-off-by: Steve Dickson <steved@redhat.com>
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The svcgssd man page doesn't mention the "-n" flag.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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When we get into auth_unix_gid at the second time, groups_len
is not 0 and ngroups variable leave as 0. Then we use ngroups
in getgrouplist that fails in this case. This patch fixes it.
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Steve Dickson <steved@redhat.com>
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match order in 2.6.38, 2.6.39 (-rc3) and development tree
while at it, get rid of obsolete ds_write and ds_commit
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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From: Suresh Jayaraman <sjayaraman@suse.de>
It was observed that when ipv6 module was not loaded and cannot be auto-loaded,
when starting NFS server, the following error occurs:
"rpc.nfsd: unable to create inet6 TCP socket: errno 97 (Address
family not supported by protocol)"
This is obviously a true message, but does not represent an "error" when ipv6
is not enabled. Rather, it is an expected condition. As such, it can be
confusing / misleading / distracting to display it in this scenario.
This patch instead of throwing error when a socket call fails with
EAFNOSUPPORT, makes it as a NOTICE.
Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Commit 5604b35a6 introduced a number of missing initializer
warnings that were missed. This patch removes those warnings.
Signed-off-by: Steve Dickson <steved@redhat.com>
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The badclnt and badauth headers were reversed
when the server side rpc stats (-s -o rpc) were
displayed.
Signed-off-by: Steve Dickson <steved@redhat.com>
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Commit 544ed73d introduced a regression that caused
rpc.svcgssd to seg fault on "Wrong principal in request"
errors in gss_accept_sec_context()
Signed-off-by: Steve Dickson <steved@redhat.com>
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Previously, when writing to /proc/net/rpc/*/channel, if a cache line
were larger than the default buffer size (likely 1024 bytes), mountd
and svcgssd would split writes into a number of buffer-sized writes.
Each of these writes would get an EINVAL error back from the kernel
procfs handle (it expects line-oriented input and does not account for
multiple/split writes), and no cache update would occur.
When such behavior occurs, NFS clients depending on mountd to finish
the cache operation would block/hang, or receive EPERM, depending on
the context of the operation. This is likely to happen if a user is a
member of a large (~100-200) number of groups.
Instead, every fopen() on the procfs files in question is followed by
a call to setvbuf(), using a per-file dedicated buffer of
RPC_CHAN_BUF_SIZE length.
Really, mountd should not be using stdio-style buffered file operations
on files in /proc to begin with. A better solution would be to use
internally managed buffers and calls to write() instead of these stdio
calls, but that would be a more extensive change; so this is proposed
as a quick and not-so-dirty fix in the meantime.
Signed-off-by: Sean Finney <sean.finney@sonyericsson.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Previously, in auth_unix_gid, group lists were stored in an array of
hard-coded length 100, and in the situation that the group lists for a
particular call were too large, the array was swapped with a dynamically
allocated/freed buffer. For environments where users are commonly in
a large number of groups, this isn't an ideal approach.
Instead, use malloc/realloc to grow the list on an as-needed basis.
Signed-off-by: Sean Finney <sean.finney@sonyericsson.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This patch allows to link mount.nfs with libmount from util-linux >=
v2.19. The new libmount based code is enabled by CONFIG_LIBMOUNT and
is stored in mount_libmount.c. The old code is not affected by this
change.
The libmount does not have officially stable API yet, so the
--enable-libmount-mount is marked as experimental in the configure
help output.
The ./configure option is the same as we use in util-linux to enable
support for libmount in mount(8).
The addr= (and some other options necessary for remount/umount) are
stored to /etc/mtab or to /dev/.mount/utab. The utab file is *private*
libmount file. It's possible that some mount options (for example
user=) will be moved to kernel, so the utab will not be necessary.
About libmount:
* supports systems without and with regular /etc/mtab
* does not store VFS and FS mount options in userspace
* manages user= option and evaluate permissions
* parses VFS mount options and generate MS_* flags
* parses /etc/{fstab,mtab}, /proc/mounts or /proc/self/mountinfo
* long-term goal is to use the same code in all mount.<type> helpers
Note, use
LIBMOUNT_DEBUG=0xffff mount.nfs foo:/path /path
to debug the library.
On systems with util-linux v2.19 the findmnt(8) command uses libmount
to list all/selected mount points:
$ findmnt /path
$ findmnt --mtab /path
the --mtab appends userspace mount options (e.g. user=) to the output.
CC: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Move generic code that could be shared between standard mount.nfs and
libmount version to utils.c and network.c.
CC: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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