| Commit message (Collapse) | Author | Age | Files | Lines |
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Commit 76f8ce8c (statd: Update existing record if we receive SM_MON with
new cookie) added some logic to unconditionally delete some existing
on-disk monitor records. That works fine in an HA-NFS setup where
there's a good chance of monitor files being left around after service
failovers, but in the case where there isn't an existing monitor file
statd emits a scary looking message like this:
Jun 15 14:14:59 hostname rpc.statd[1368]: Failed to delete: could not
stat original file /var/lib/nfs/statd/sm/nfs.smayhew.test: No such file
or directory
That message can be suppressed.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If we fall back to using the numeric host then we shouldn't call
xlog with D_GENERAL. That can cause 'exportfs -u' to exit with a 1
if, for example, you have exports using ip addresses that can't be
resolved to hostnames. Use D_PARSE instead.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Linux C libraries are moving away from implicitly including the header
sys/sysmacros.h via sys/types.h. We would like to do this for glibc
now, but others (musl/etc...) have been doing it already. This means
any code using major/minor/makedevs functions will fail to build when
they don't include that header.
Leverage the AC_HEADER_MAJOR macro that configure is already using to
pull in the right header.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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statd calls atexit(statd_unregister) to unregister statd service on
exit, which actually has a side-effect that ha_callout() unregisters statd
service even when the child callout process exits on execl() failure.
Certain clustering software's deployment script adds -H option with its
specified file non-existent, when it is configured not to use callout.
In other words, -H seems to be used no matter if callout is needed or
not, but when callout is unnecessary, the specified callout program is not
deployed.
This causes statd not to work once a lock is requested by its NFS
client,
as execl() in ha_callout() results in ENOENT and exit() of the child
process calls exit-handler statd_unregister(). Eventually, the NFS
client
gets stuck with messages "lockd: cannot monitor xxx" on the NFS server.
Also, execl() could fail for other reasons like ENFILE or EIO as well.
A forked child must not unregister the statd RPC server, so use
_exit(), which does not call any exit-handlers, instead of exit().
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: Steve Dickson <steved@redhat.com>
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An if statement has been missing a brace since host_ntop() was added in
commit 94ce1eb94babb4c587b2826452fb053cba745098 ("libexport.a: Add
helpers to manage DNS lookups").
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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both connect() and select() can receive EINTR signals that we need to
recover from.
In Unix Network Programming, volume 1, section 5.9, W. Richard Stevens
states:
What we are doing [?] is restarting the interrupted system call ourself.
This is fine for accept, along with the functions such as read, write,
select and open. But there is one function that we cannot restart ourself:
connect. If this function returns EINTR, we cannot call it again, as doing
so will return an immediate error. When connect is interrupted by a caught
signal and is not automatically restarted, we must call select to wait for
the connection to complete,
Thus for connect() treat both EINPROGRESS and EINTR the same -- call
select().
For select(), it should be re-tried again upon receiving EINTR.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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URL: https://bugzilla.redhat.com/show_bug.cgi?id=1287468
Signed-off-by: Rinku Kothiya <rkothiya@redhat.com>
Signed-off-by: Mohit Agrawal <moagrawa@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Commit 9a92ef6f to add netgroup lookup of resolvable
IP addresses inadvertently broke the netgroup
check for short hostnames.
This patch fixes that breakage by changing the IP address
lookup to use a separate variable.
Signed-off-by: Frank Sorenson <sorenson@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If file open failed, no need to issue close system call in
nsm_get_state and closeall.
Signed-off-by: Vivek Trivedi <t.vivek@samsung.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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To help debug rpcbind failures, make sure all
errors are logged and log as much info about
the error as possible.
Signed-off-by: Steve Dickson <steved@redhat.com>
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Commit 273b4647 introduced the following warning:
mydaemon.c:125:2: warning: implicit declaration of function 'closelog'
[-Wimplicit-function-declaration]
Signed-off-by: Steve Dickson <steved@redhat.com>
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Commit d89e3fc7 removed the EAI_NONAME check altogether instead of just
moving the NULL check. This causes exportfs -u to incorrectly exit
with 1 whenever there's more than one MCL_FQDN export in the exportlist.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If a netgroup entry specifies an IP address, and that
IP address can be resolved to a name, mountd will
currently only test whether the canonical name and
any aliases are in the netgroup, and does not test
whether the IP address is in the netgroup (IP
addresses which do not resolve to a name are
already checked against the netgroup).
This patch adds the check to see whether the IP
addresses are in the netgroup.
Signed-off-by: Frank Sorenson <sorenson@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The interface for controlling the debug level in libtirpc was added
over a year ago, but nothing's taking advantage of it.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Commit 7addf9d (cleanup daemonization code) added the following line to
mydaemon_init():
dup2(pipefds[1], 3);
If we've already called vsyslog() before the fork(), then chances are fd
3 was being used for the syslog socket. In that case the next vsyslog()
call will cause the data to appear on the read end of the pipe, causing
the parent to exit with a nonzero status. If systemd is running, it
will see the parent's nonzero exit status and will terminate the child
as well.
So just call closelog() to close the fd. The next call to vsyslog()
will open a new one if need be.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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It's caused by commit 4a1ad4aa30,
"mountd: Enable all auth flavors on pseudofs exports"
This patch removes duplicate secinfo and invalid secinfo (zero).
Acked-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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When using pnfs with "fsid=0", exportfs prints error as,
$ exportfs -a
exportfs: /var/lib/nfs/etab:1: unknown keyword "no_pnfsfsid=0"
Commit cdd16bef98 ("nfs-utils: add support for the "pnfs" export option")
miss the comma after "pnfs"/"on_pnfs" operation.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This goes along with the patch just sent to Bruce to make pnfs
support conditional.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Valgrind shows that the memory allocated for ee.e_hostname in
getexportent() is being leaked. While there _is_ a call to xfree(), by
the time it gets called the leak's already happened. Moving the xfree()
call so that it occurs before the assignment that overwrites ee fixes
this.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The daemonization init/ready functions have parameters that are never used,
require the caller to keep track of some pipefds that it has no interest in
and which might not be used in some scenarios. Cleanup both functions a bit.
The idea here is also that these two functions might be good points to
insert more systemd init code later (sd_notify()).
Also, statd had a private copy of the daemonization code for unknown
reasons...so make it use the generic version instead.
Signed-off-by: David H?rdeman <david@hardeman.nu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Add mention of new files, remove mention of old files,
and cause "make dist" to create something very similar to
the current distributions.
systemd files are not currently included in "make dist" and some
files generated by "rpcgen" are (though they aren't in official
distribution).
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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All access to kernel is now done using file descriptors.
Signed-off-by: Timo Ter?s <timo.teras@iki.fi>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Steve Dickson <steved@redhat.com>
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Throw 'No file systems exported!' iff no volume is exported rather
then if some exports file is empty. Typically this can happen if
the default /etc/exports file is empty and admin installed
configuration into /etc/exports.d directory.
This is follow-up for e725def62c73b4 commit.
Signed-off-by: Pavel Raiskup <praiskup@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Commit 076dd80 introduced a regression that causes
exportfs to fail when there is an empty /etc/exports
file. A empty /etc/exports file is valid and should
not cause exportfs to fail.
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This patch is experimental. In works fine in that it removes the
vulnerability against a DOS attack. rpc.mountd can be blocked by
a bad client, that sends many RPC requests but never reads the
responses. This might happen intentionally or caused by a wrong
network config (MTU). The patch switches on the nonblocking
mode of libtirpc. In that mode writes can block for a max of 2 seconds.
Attackers are forced to send requests slower, as libtirpc will close
a connection if it finds two requests to read at the same time.
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Bodo Stroesser <bstroesser@ts.fujitsu.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If mountd is built with libtirpc the tcp listeners and the sockets
waiting for UDP messages are not in non-blocking mode. Thus if running
with multiple threads (-t XX), all threads will wake up from select on
a connection request or a UDP message, but only one thread will succeed.
All others will wait on accept() or read() for the next event.
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Bodo Stroesser <bstroesser@ts.fujitsu.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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If mountd is built without libtirpc and it is started using "-p XXX"
option, the tcp listeners and the sockets waiting for UDP messages
are not in non-blocking mode. Thus if running with multiple threads (-t XX),
all threads will wake up from select on a connection request or a UDP
message, but only one thread will succeed. All others will wait on
accept() or read() for the next event.
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Bodo Stroesser <bstroesser@ts.fujitsu.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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The patch to nfs/exportfs to allow nfsd to start when
there are some, but not all, unresolvable entries in
/etc/exports.
Signed-off-by: Henrique Martins <linux@martins.cc>
Signed-off-by: Steve Dickson <steved@redhat.com>
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When attempting to establish a local ephemeral endpoint for a TCP or UDP
socket, do not explicitly call bind(2), instead let it happen implicilty
when the socket is first used.
The main motivating factor for this change is when TCP runs out of unique
ephemeral ports (i.e. cannot find any ephemeral ports which are not a
part of *any* TCP connection). In this situation if you explicitly call
bind(2), then the call will fail with EADDRINUSE. However, if you allow the
allocation of an ephemeral port to happen implicitly as part of connect(2)
(or other functions), then ephemeral ports can be reused, so long as
the combination of (local_ip, local_port, remote_ip, remote_port)
is unique for TCP sockets on the system.
This doesn't matter for UDP sockets, but it seemed easiest to treat TCP
and UDP sockets the same.
This can allow mount.nfs(8) to continue to function successfully, even
in the face of misbehaving applications which are creating a large number of
TCP connections.
Signed-off-by: Chris Perl <chris.perl@gmail.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This fixes the problem reported in:
https://bugzilla.redhat.com/show_bug.cgi?id=1083018
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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NULL is defined in stdlib.h so we need to include that.
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Use the standard integer types. This fixes compiling errors with musl libc.
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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One of our customer's application only needs file names, not file
attributes. With directories having 10K+ inodes (assuming buffer cache
has directory blocks cached having file names, but inode cache is
limited and hence need eviction of older cached inodes), older inodes
are evicted periodically. So if they keep on doing readdir(2) from NSF
client on multiple directories, some directory's files are periodically
removed from inode cache and hence new readdir(2) on same directory
requires disk access to bring back inodes again to inode cache.
As READDIRPLUS request fetches attributes also, doing getattr on each
file on server, it causes unnecessary disk accesses. If READDIRPLUS on
NFS client is returned with -ENOTSUPP, NFS client uses READDIR request
which just gets the names of the files in a directory, not attributes,
hence avoiding disk accesses on server.
There's already a corresponding client-side mount option, but an export
option reduces the need for configuration across multiple clients.
This flag affects NFSv3 only. If it turns out it's needed for NFSv4 as
well then we may have to figure out how to extend the behavior to NFSv4,
but it's not currently obvious how to do that.
Signed-off-by: Rajesh Ghanekar <rajesh_ghanekar@symantec.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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I hit a segfault in add_name with a mountd built with gcc-4.9.0. Some
NULL pointer checks got reordered such that a pointer was dereferenced
before checking to see whether it was NULL. The problem was due to
nfs-utils relying on undefined behavior, which tricked gcc into assuming
that the pointer would never be NULL.
At first I assumed that this was a compiler bug, but Jakub Jelinek and
Jeff Law pointed out:
"If old is NULL, then:
strncpy(new, old, cp-old);
is undefined behavior (even when cp == old == NULL in that case),
therefore gcc assumes that old is never NULL, as otherwise it would be
invalid.
Just guard
strncpy(new, old, cp-old);
new[cp-old] = 0;
with if (old) { ... }."
This patch does that. If old is NULL though, then we still need to
ensure that new is NULL terminated, lest the subsequent strcats walk off
the end of it.
Cc: Jeff Law <law@redhat.com>
Cc: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: Jeff Layton <jlayton@poochiereds.net>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Errors were logged with xlog_err function relying on errno, but these
functions don't set it.
Fix the problem by introducing xlog_errno which set errno
Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This implementation allows specifying NFS4 minor version numbers up
to the number of bits available in int data type (typically 32 on
Linux)
This is based on an idea mentioned by
J. Bruce Fields <bfields@fieldses.org> mentioned on the linux-nfs mailing list.
I changed the data type back from an array to two bit fields, one for
storing whether the minor version was specified on the command line
and the second one for storing whether it was set or unset. This
change was done to prevent blowing up the allocated stack space in an
unnecessary fashion.
Acked-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Robert Schiele <rschiele@gmail.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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From: "J. Bruce Fields" <bfields@redhat.com>
By unconditionally adding ?4.2 to the version string written to the
kernel we make nfs-utils incompatible with pre-4.2-supporting kernels.
Ditto for 4.1. This problem was introduced by
12a590f8d556c00a9502eeebaa763d906222d521 "rpc.nfsd: Allow v4.2 server
support with the -V option", which also change nfsd to unconditionally
pass ?4.2.
Instead, just don't mention 4.1 or 4.2 unless the commandline has
specifically requested that one or the other be turned on or off.
Tested-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Reported-by: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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We currently have 2 cut-and-paste versions of this code. One for idmapd
and one for svcgssd.[1]
The two are basically equivalent but there are some small differences,
mostly related to how errors in that function are logged. svcgssd uses
printerr() with a priority of 1, which only prints errors if -v was
specified. That doesn't seem to be quite right. Daemonizing errors are
necessarily fatal and should be logged as such. The one for idmapd uses
err(), which always prints to stderr even though we have the xlog
facility set up. Since both have xlog configured at this point, log the
errors using xlog_err() instead.
The only other significant difference I see is that the idmapd version
will open "/" if it's unable to open "/dev/null". I believe that however
was a holdover from an earlier version of that function that did not
error out when we were unable to open a file descriptor. Since the
function does that now, I don't believe we need that fallback anymore.
[1]: technically, we have a third in statd too, but it's different
enough that I don't want to touch it here.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Add the ability to turn off UDP listeners with the
new "-u | --no-udp" flag.
Signed-off-by: Steve Dickson <steved@redhat.com>
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Convert the current code to used the NFSCTL_XXX macros
to turn off the TCP listener.
Signed-off-by: Steve Dickson <steved@redhat.com>
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exportfs currently exits with a non-zero error for some errors,
but not for others.
It does this by having various support routines set the global
variable "export_errno".
Change this to have 'xlog' set export_errno if an ERROR is
reported. That way all errors will be caught.
Note that the exit error code is changed from 22 (EINVAL)
to the more traditional '1'.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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I think there was a reason for this many years ago,
but I can not find any evidence that it ever really did
anything useful and it certainly doesn't seem to now.
And the documentation suggests that IP address take precedence over
SUBNETs, and that can only happen if they are treated as MCL_FQDN.
So remove this apparently pointless code.
Reported-and-tested-by: Wangminlan <wangminlan@huawei.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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exportfs currently exits with a non-zero error for some errors,
but not for others.
It does this by having various support routines set the global
variable "export_errno".
Change this to have 'xlog' set export_errno if an ERROR is
reported. That way all errors will be caught.
Note that the exit error code is changed from 22 (EINVAL)
to the more traditional '1'.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This reverts commit 956aeff2e24304e938846f81f4b9db34cbf18a32.
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To improve error handling when scripting exportfs it's useful
to have non-zero exit codes when the requested operation did not
succeed.
This patch also returns a non-zero exit code if you request to
unexport a non-existant share.
Signed-off-by: Tony Asleson <tasleson@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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