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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2016 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package osutil_test
import (
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/osutil"
)
type nfsSuite struct{}
var _ = Suite(&nfsSuite{})
func (s *nfsSuite) TestIsHomeUsingRemoteFS(c *C) {
cases := []struct {
mountinfo, fstab string
isRemoteFS bool
errorPattern string
}{{
// Errors from parsing mountinfo and fstab are propagated.
mountinfo: "bad syntax",
errorPattern: "cannot parse mountinfo:.*, .*",
}, {
fstab: "bad syntax",
errorPattern: "cannot parse .*/fstab.*, .*",
}, {
// NFSv3 {tcp,udp} and NFSv4 currently mounted at /home/zyga/nfs are recognized.
mountinfo: "1074 28 0:59 / /home/zyga/nfs rw,relatime shared:342 - nfs localhost:/srv/nfs rw,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=127.0.0.1,mountvers=3,mountport=54125,mountproto=tcp,local_lock=none,addr=127.0.0.1",
isRemoteFS: true,
}, {
mountinfo: "1074 28 0:59 / /home/zyga/nfs rw,relatime shared:342 - nfs localhost:/srv/nfs rw,vers=3,rsize=32768,wsize=32768,namlen=255,hard,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=127.0.0.1,mountvers=3,mountport=47875,mountproto=udp,local_lock=none,addr=127.0.0.1",
isRemoteFS: true,
}, {
mountinfo: "680 27 0:59 / /home/zyga/nfs rw,relatime shared:478 - nfs4 localhost:/srv/nfs rw,vers=4.2,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=127.0.0.1,local_lock=none,addr=127.0.0.1",
isRemoteFS: true,
}, {
// NFSv3 {tcp,udp} and NFSv4 currently mounted at /home/zyga/nfs are ignored (not in $HOME).
mountinfo: "1074 28 0:59 / /mnt/nfs rw,relatime shared:342 - nfs localhost:/srv/nfs rw,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=127.0.0.1,mountvers=3,mountport=54125,mountproto=tcp,local_lock=none,addr=127.0.0.1",
}, {
mountinfo: "1074 28 0:59 / /mnt/nfs rw,relatime shared:342 - nfs localhost:/srv/nfs rw,vers=3,rsize=32768,wsize=32768,namlen=255,hard,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=127.0.0.1,mountvers=3,mountport=47875,mountproto=udp,local_lock=none,addr=127.0.0.1",
}, {
mountinfo: "680 27 0:59 / /mnt/nfs rw,relatime shared:478 - nfs4 localhost:/srv/nfs rw,vers=4.2,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=127.0.0.1,local_lock=none,addr=127.0.0.1",
}, {
// NFS that may be mounted at /home and /home/zyga/nfs is recognized.
// Two spellings are possible, "nfs" and "nfs4" (they are equivalent
// nowadays).
fstab: "localhost:/srv/nfs /home nfs defaults 0 0",
isRemoteFS: true,
}, {
fstab: "localhost:/srv/nfs /home nfs4 defaults 0 0",
isRemoteFS: true,
}, {
fstab: "localhost:/srv/nfs /home/zyga/nfs nfs defaults 0 0",
isRemoteFS: true,
}, {
fstab: "localhost:/srv/nfs /home/zyga/nfs nfs4 defaults 0 0",
isRemoteFS: true,
}, {
// NFS that may be mounted at /mnt/nfs is ignored (not in $HOME).
fstab: "localhost:/srv/nfs /mnt/nfs nfs defaults 0 0",
}, {
// autofs that is mounted at /home.
mountinfo: "137 29 0:50 / /home rw,relatime shared:87 - autofs /etc/auto.master.d/home rw,fd=7,pgrp=22588,timeout=300,minproto=5,maxproto=5,indirect,pipe_ino=173399",
isRemoteFS: true,
}, {
// cifs that is mounted at /home
// This is not real data, it is made-up.
mountinfo: "0 0 0:0 / /home rw,relatime shared:0 - cifs //sub.example.org/path$/all-users irrelevant-options",
isRemoteFS: true,
}, {
// cifs that is mounted at /home/$USERNAME
// This is not real data, it is made-up.
mountinfo: "0 0 0:0 / /home/some-user rw,relatime shared:0 - cifs //sub.example.org/path$/some-user irrelevant-options",
isRemoteFS: true,
}}
for _, tc := range cases {
restore := osutil.MockMountInfo(tc.mountinfo)
defer restore()
restore = osutil.MockEtcFstab(tc.fstab)
defer restore()
isRemoteFS, err := osutil.IsHomeUsingRemoteFS()
if tc.errorPattern != "" {
c.Assert(err, ErrorMatches, tc.errorPattern, Commentf("test case %#v", tc))
} else {
c.Assert(err, IsNil)
}
c.Assert(isRemoteFS, Equals, tc.isRemoteFS)
}
}
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