tests/regression/tools/working-directory/test_relayd_workding_directory

   1 #!/bin/bash
   2 #
   3 # Copyright (C) - 2018 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
   4 #
   5 # This library is free software; you can redistribute it and/or modify it under
   6 # the terms of the GNU Lesser General Public License as published by the Free
   7 # Software Foundation; version 2.1 of the License.
   8 #
   9 # This library is distributed in the hope that it will be useful, but WITHOUT
  10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  11 # FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
  12 # details.
  13 #
  14 # You should have received a copy of the GNU Lesser General Public License
  15 # along with this library; if not, write to the Free Software Foundation, Inc.,
  16 # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  17
  18 TEST_DESC="Change working directory of process"
  19
  20 CURDIR=$(dirname $0)/
  21 TESTDIR=$CURDIR/../../../
  22
  23 DIR=$(readlink -f $TESTDIR)
  24
  25 NUM_TESTS=22
  26
  27 source $TESTDIR/utils/utils.sh
  28
  29
  30 #MUST set TESTDIR before calling those functions
  31 plan_tests $NUM_TESTS
  32
  33 print_test_banner "$TEST_DESC"
  34 function test_relayd()
  35 {
  36         local working_dir=$(mktemp -d)
  37         local test_dir=$(readlink -f $TESTDIR)
  38         local relayd_bin_path="$DIR/../src/bin/lttng-relayd/$RELAYD_BIN"
  39
  40         diag "Test lttng-relayd normal mode change working directory"
  41
  42         # There is no rendez-vous mechanism that can guarantee the good timing
  43         # to check if the workdir directory was changed.
  44         # In the case of lttng-sessiond this would be achieved using the
  45         # --sig-parent option but lttng-relayd does not have this feature yet.
  46         # Fall back on using polling of the value and unblock when the value is
  47         # the one we expect. In case of a failure the test will hang.
  48         $relayd_bin_path --working-directory $working_dir > /dev/null 2>&1 &
  49         RELAYD_PIDS=$!
  50
  51         while true; do
  52                 local cwd=$(readlink /proc/${RELAYD_PIDS}/cwd)
  53                 test "${working_dir}" = "${cwd}"
  54                 if [ $? -eq 0 ]; then
  55                         # Working dir for process is valid
  56                         break
  57                 fi
  58                 sleep 0.1
  59         done
  60
  61         # If we are here the test passed
  62         pass "Working directory changed"
  63
  64         stop_lttng_relayd
  65         rm -rf ${working_dir}
  66 }
  67
  68 function test_relayd_daemon()
  69 {
  70         local working_dir=$(mktemp -d)
  71
  72         diag "Test lttng-relayd daemon mode change working directory"
  73
  74         start_lttng_relayd_opt 1 "-d" "--working-directory $working_dir"
  75
  76         local cwd=$(readlink /proc/${RELAYD_PIDS}/cwd)
  77
  78         is "x${cwd}" "x${working_dir}" "Working directory changed"
  79
  80         stop_lttng_relayd
  81         rm -rf ${working_dir}
  82 }
  83
  84 function test_relayd_daemon_no_working_dir()
  85 {
  86         local expected_working_dir="/"
  87
  88         diag "Test lttng-relayd daemon mode change working directory"
  89
  90         start_lttng_relayd_opt 1 "-d" ""
  91
  92         local cwd=$(readlink /proc/${RELAYD_PIDS}/cwd)
  93
  94         is "x${cwd}" "x${expected_working_dir}" "Working directory is ${expected_working_dir}"
  95
  96         stop_lttng_relayd
  97         rm -rf ${working_dir}
  98 }
  99
 100 function test_relayd_background()
 101 {
 102         local working_dir=$(mktemp -d)
 103
 104         diag "Test lttng-relayd background mode change working directory"
 105
 106         start_lttng_relayd_opt 1 "-b" "--working-directory $working_dir"
 107
 108         local cwd=$(readlink /proc/${RELAYD_PIDS}/cwd)
 109
 110         is "x${cwd}" "x${working_dir}" "Working directory changed"
 111
 112         stop_lttng_relayd
 113         rm -rf ${working_dir}
 114 }
 115
 116 function test_relayd_background_no_working_dir()
 117 {
 118         local expected_working_dir="/"
 119         diag "Test lttng-relayd background working directory"
 120
 121         start_lttng_relayd_opt 1 "-b" ""
 122
 123         local cwd=$(readlink /proc/${RELAYD_PIDS}/cwd)
 124
 125         is "x${cwd}" "x${expected_working_dir}" "Working directory is ${expected_working_dir}"
 126
 127         stop_lttng_relayd
 128         rm -rf ${working_dir}
 129 }
 130
 131 function test_relayd_debug_permission()
 132 {
 133         local working_dir=$(mktemp -d)
 134         local output_pattern='Working directory is not writable'
 135         ERROR_OUTPUT_DEST=$(mktemp -u)
 136
 137         diag "Test lttng-relayd change working directory on non writable directory"
 138
 139         # Removing write access to working dir
 140         okx chmod -w ${working_dir}
 141
 142         start_lttng_relayd_opt 1 "-b" "-v --working-dir $working_dir"
 143
 144         local cwd=$(readlink /proc/${RELAYD_PIDS}/cwd)
 145         is "x${cwd}" "x${working_dir}" "Workind directory changed"
 146
 147         local output_content="$(cat ${ERROR_OUTPUT_DEST})"
 148         like "x${output_content}" "$output_pattern" "Warning about missing write permission is present"
 149
 150         stop_lttng_relayd
 151         rm -rf ${working_dir} ${ERROR_OUTPUT_DEST}
 152         ERROR_OUTPUT_DEST=/dev/null
 153 }
 154
 155 function test_relayd_failure()
 156 {
 157         local working_dir="$(mktemp -d)"
 158         local working_dir_imaginary="${working_dir}/imaginary_directory"
 159         local output_dest=$(mktemp -u)
 160         local output_pattern='Error: Changing working directory'
 161         local test_dir=$(readlink -f $TESTDIR)
 162         local relayd_bin_path="$DIR/../src/bin/lttng-relayd/$RELAYD_BIN"
 163
 164         diag "Test lttng-relayd normal mode change non-existing directory"
 165
 166         $relayd_bin_path -b --working-directory $working_dir_imaginary > $output_dest 2>&1
 167         test $? -eq "1"
 168         ok $? "Expect failure to start lttng-relayd for non-existent working directory"
 169
 170         RELAYD_PIDS=$(pgrep $RELAYD_MATCH)
 171         if [ -z "${RELAYD_PIDS}" ]; then
 172                 pass "No lttng-relayd present"
 173         else
 174                 fail "No lttng-relayd present"
 175                 stop_lttng_relayd_notap
 176         fi
 177
 178         local output_content="$(cat ${output_dest})"
 179         like "x${output_content}" "$output_pattern" "Error about invalid directory"
 180
 181         rm -rf ${working_dir} ${output_dest}
 182 }
 183
 184 TESTS=(
 185         test_relayd
 186         test_relayd_daemon
 187         test_relayd_daemon_no_working_dir
 188         test_relayd_background
 189         test_relayd_background_no_working_dir
 190         test_relayd_debug_permission
 191         test_relayd_failure
 192 )
 193
 194 for fct_test in ${TESTS[@]};
 195 do
 196         ${fct_test}
 197         if [ $? -ne 0 ]; then
 198                 break;
 199         fi
 200 done