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      1 #!/bin/sh
      2 #==============================================================================
      3 # Copyright (c) 2015 Red Hat, Inc.
      4 #
      5 # This program is free software: you can redistribute it and/or modify
      6 # it under the terms of version 2 the GNU General Public License as
      7 # published by the Free Software Foundation.
      8 #
      9 # This program is distributed in the hope that it will be useful,
     10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
     11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     12 # GNU General Public License for more details.
     13 #
     14 # You should have received a copy of the GNU General Public License
     15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
     16 #
     17 # Written by Matus Marhefka <mmarhefk (at] redhat.com>
     18 #
     19 #==============================================================================
     20 #
     21 # Tests that a separate network namespace cannot affect sysfs contents
     22 # of the main namespace.
     23 #==============================================================================
     24 
     25 TCID="netns_sysfs"
     26 TST_TOTAL=3
     27 NS_TYPE="net,mnt"
     28 DUMMYDEV_HOST="dummy_test0"
     29 DUMMYDEV="dummy_test1"
     30 . test.sh
     31 
     32 setns_check
     33 if [ $? -eq 32 ]; then
     34 	tst_brkm TCONF "setns not supported"
     35 fi
     36 
     37 cleanup()
     38 {
     39 	tst_rmdir
     40 	ip link del $DUMMYDEV_HOST 2>/dev/null
     41 	ip link del $DUMMYDEV 2>/dev/null
     42 	kill -9 $NS_HANDLE 2>/dev/null
     43 }
     44 
     45 tst_tmpdir
     46 NS_HANDLE=$(ns_create $NS_TYPE)
     47 if [ $? -eq 1 ]; then
     48 	tst_resm TINFO "$NS_HANDLE"
     49 	tst_brkm TBROK "unable to create a new network namespace"
     50 fi
     51 TST_CLEANUP=cleanup
     52 
     53 ip link add $DUMMYDEV_HOST type dummy || \
     54 	tst_brkm TBROK "failed to add a new (host) dummy device"
     55 
     56 ns_exec $NS_HANDLE $NS_TYPE mount --make-rprivate /sys
     57 ns_exec $NS_HANDLE $NS_TYPE ip link add $DUMMYDEV type dummy || \
     58 	tst_brkm TBROK "failed to add a new dummy device"
     59 ns_exec $NS_HANDLE $NS_TYPE mount -t sysfs none /sys 2>/dev/null
     60 
     61 
     62 # TEST CASE #1
     63 ns_exec $NS_HANDLE $NS_TYPE test -e /sys/class/net/$DUMMYDEV
     64 if [ $? -eq 0 ]; then
     65 	tst_resm TPASS "sysfs in new namespace has $DUMMYDEV interface"
     66 else
     67 	tst_resm TFAIL "sysfs in new namespace does not have $DUMMYDEV interface"
     68 fi
     69 
     70 
     71 # TEST CASE #2
     72 ns_exec $NS_HANDLE $NS_TYPE test -e /sys/class/net/$DUMMYDEV_HOST
     73 if [ $? -ne 0 ]; then
     74 	tst_resm TPASS "sysfs in new namespace does not have $DUMMYDEV_HOST interface"
     75 else
     76 	tst_resm TFAIL "sysfs in new namespace contains $DUMMYDEV_HOST interface"
     77 fi
     78 
     79 
     80 # TEST CASE #3
     81 test -e /sys/class/net/$DUMMYDEV
     82 if [ $? -ne 0 ]; then
     83 	tst_resm TPASS "sysfs not affected by a separate namespace"
     84 else
     85 	tst_resm TFAIL "sysfs affected by a separate namespace"
     86 fi
     87 
     88 
     89 tst_exit
     90