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1 #!/bin/bash
2 #
3 # Test NBD client unexpected disconnect
4 #
5 # Copyright Red Hat, Inc. 2014
6 #
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
11 #
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 # GNU General Public License for more details.
16 #
17 # You should have received a copy of the GNU General Public License
18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
19 #
20
21 # creator
22 [email protected]
23
24 seq=`basename $0`
25 echo "QA output created by $seq"
26
27 here=`pwd`
28 tmp=/tmp/$$
29 status=1        # failure is the default!
30
31 # get standard environment, filters and checks
32 . ./common.rc
33 . ./common.filter
34
35 _supported_fmt generic
36 _supported_proto nbd
37 _supported_os Linux
38
39 # Pick a TCP port based on our pid.  This way multiple instances of this test
40 # can run in parallel without conflicting.
41 choose_tcp_port() {
42         echo $((($$ % 31744) + 1024)) # 1024 <= port < 32768
43 }
44
45 wait_for_tcp_port() {
46         while ! (netstat --tcp --listening --numeric | \
47                  grep "$1.*0.0.0.0:\*.*LISTEN") 2>&1 >/dev/null; do
48                 sleep 0.1
49         done
50 }
51
52 filter_nbd() {
53         # nbd.c error messages contain function names and line numbers that are prone
54         # to change.  Message ordering depends on timing between send and receive
55         # callbacks sometimes, making them unreliable.
56         #
57         # Filter out the TCP port number since this changes between runs.
58         sed -e 's#^nbd.c:.*##g' \
59             -e 's#nbd:127.0.0.1:[^:]*:#nbd:127.0.0.1:PORT:#g'
60 }
61
62 check_disconnect() {
63         event=$1
64         when=$2
65         negotiation=$3
66         echo "=== Check disconnect $when $event ==="
67         echo
68
69         port=$(choose_tcp_port)
70
71         cat > "$TEST_DIR/nbd-fault-injector.conf" <<EOF
72 [inject-error]
73 event=$event
74 when=$when
75 EOF
76
77         if [ "$negotiation" = "--classic-negotiation" ]; then
78                 extra_args=--classic-negotiation
79                 nbd_url="nbd:127.0.0.1:$port"
80         else
81                 nbd_url="nbd:127.0.0.1:$port:exportname=foo"
82         fi
83
84         ./nbd-fault-injector.py $extra_args "127.0.0.1:$port" "$TEST_DIR/nbd-fault-injector.conf" 2>&1 >/dev/null &
85         wait_for_tcp_port "127.0.0.1:$port"
86         $QEMU_IO -c "read 0 512" "$nbd_url" 2>&1 | _filter_qemu_io | filter_nbd
87
88         echo
89 }
90
91 for event in neg1 "export" neg2 request reply data; do
92         for when in before after; do
93                 check_disconnect "$event" "$when"
94         done
95
96         # Also inject short replies from the NBD server
97         case "$event" in
98         neg1)
99                 for when in 8 16; do
100                         check_disconnect "$event" "$when"
101                 done
102                 ;;
103         "export")
104                 for when in 4 12 16; do
105                         check_disconnect "$event" "$when"
106                 done
107                 ;;
108         neg2)
109                 for when in 8 10; do
110                         check_disconnect "$event" "$when"
111                 done
112                 ;;
113         reply)
114                 for when in 4 8; do
115                         check_disconnect "$event" "$when"
116                 done
117                 ;;
118         esac
119 done
120
121 # Also check classic negotiation without export information
122 for when in before 8 16 24 28 after; do
123         check_disconnect "neg-classic" "$when" --classic-negotiation
124 done
125
126 # success, all done
127 echo "*** done"
128 rm -f $seq.full
129 status=0
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