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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 if tst_kvcmp -lt "2.6.35"; then
     33 	tst_brkm TCONF "sysfs is not mount namespace aware for kernels older than 2.6.35"
     34 fi
     35 
     36 setns_check
     37 if [ $? -eq 32 ]; then
     38 	tst_brkm TCONF "setns not supported"
     39 fi
     40 
     41 cleanup()
     42 {
     43 	tst_rmdir
     44 	ip link del $DUMMYDEV_HOST 2>/dev/null
     45 	ip link del $DUMMYDEV 2>/dev/null
     46 	kill -9 $NS_HANDLE 2>/dev/null
     47 }
     48 
     49 tst_tmpdir
     50 NS_HANDLE=$(ns_create $NS_TYPE)
     51 if [ $? -eq 1 ]; then
     52 	tst_resm TINFO "$NS_HANDLE"
     53 	tst_brkm TBROK "unable to create a new network namespace"
     54 fi
     55 TST_CLEANUP=cleanup
     56 
     57 ip link add $DUMMYDEV_HOST type dummy || \
     58 	tst_brkm TBROK "failed to add a new (host) dummy device"
     59 
     60 ns_exec $NS_HANDLE $NS_TYPE mount --make-rprivate /sys
     61 ns_exec $NS_HANDLE $NS_TYPE ip link add $DUMMYDEV type dummy || \
     62 	tst_brkm TBROK "failed to add a new dummy device"
     63 ns_exec $NS_HANDLE $NS_TYPE mount -t sysfs none /sys 2>/dev/null
     64 
     65 
     66 # TEST CASE #1
     67 ns_exec $NS_HANDLE $NS_TYPE test -e /sys/class/net/$DUMMYDEV
     68 if [ $? -eq 0 ]; then
     69 	tst_resm TPASS "sysfs in new namespace has $DUMMYDEV interface"
     70 else
     71 	tst_resm TFAIL "sysfs in new namespace does not have $DUMMYDEV interface"
     72 fi
     73 
     74 
     75 # TEST CASE #2
     76 ns_exec $NS_HANDLE $NS_TYPE test -e /sys/class/net/$DUMMYDEV_HOST
     77 if [ $? -ne 0 ]; then
     78 	tst_resm TPASS "sysfs in new namespace does not have $DUMMYDEV_HOST interface"
     79 else
     80 	tst_resm TFAIL "sysfs in new namespace contains $DUMMYDEV_HOST interface"
     81 fi
     82 
     83 
     84 # TEST CASE #3
     85 test -e /sys/class/net/$DUMMYDEV
     86 if [ $? -ne 0 ]; then
     87 	tst_resm TPASS "sysfs not affected by a separate namespace"
     88 else
     89 	tst_resm TFAIL "sysfs affected by a separate namespace"
     90 fi
     91 
     92 
     93 tst_exit
     94