--- /dev/null
+#!/bin/bash
+#
+# Copyright (C) - 2018 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+#
+# This library is free software; you can redistribute it and/or modify it under
+# the terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation; version 2.1 of the License.
+#
+# This library 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 Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+TEST_DESC="Change working directory of process"
+
+CURDIR=$(dirname "$0")/
+TESTDIR=$CURDIR/../../../
+
+DIR=$(readlink -f "$TESTDIR")
+
+NUM_TESTS=27
+
+source $TESTDIR/utils/utils.sh
+
+
+#MUST set TESTDIR before calling those functions
+plan_tests $NUM_TESTS
+
+print_test_banner "$TEST_DESC"
+function test_relayd()
+{
+ local relayd_bin_path="$DIR/../src/bin/lttng-relayd/$RELAYD_BIN"
+ local working_dir
+ local pid
+ local cwd
+
+ working_dir=$(mktemp -d)
+
+ diag "Test lttng-relayd normal mode change working directory"
+
+ # There is no rendez-vous mechanism that can guarantee the good timing
+ # to check if the workdir directory was changed.
+ # In the case of lttng-sessiond this would be achieved using the
+ # --sig-parent option but lttng-relayd does not have this feature yet.
+ # Fall back on using polling of the value and unblock when the value is
+ # the one we expect. In case of a failure the test will hang.
+ $relayd_bin_path --working-directory "$working_dir" > /dev/null 2>&1 &
+ pid=$!
+
+ while true; do
+ cwd=$(readlink "/proc/${pid}/cwd")
+ if test "$working_dir" = "$cwd"; then
+ # Working dir for process is valid
+ break
+ fi
+ sleep 0.1
+ done
+
+ # If we are here the test passed
+ pass "Working directory changed"
+
+ stop_lttng_relayd
+ rm -rf "$working_dir"
+}
+
+function test_relayd_daemon()
+{
+ local working_dir
+ local cwd
+ local pid
+
+ working_dir=$(mktemp -d)
+
+ diag "Test lttng-relayd daemon mode change working directory"
+
+ start_lttng_relayd_opt 1 "-d" "--working-directory $working_dir"
+
+ pid=$(pgrep "$RELAYD_MATCH")
+ ok $? "Found lttng-relayd"
+
+ cwd=$(readlink "/proc/${pid}/cwd")
+
+ is "$cwd" "$working_dir" "Working directory changed"
+
+ stop_lttng_relayd
+ rm -rf "$working_dir"
+}
+
+function test_relayd_daemon_no_working_dir()
+{
+ local expected_working_dir="/"
+ local cwd
+ local pid
+
+ diag "Test lttng-relayd daemon mode change working directory"
+
+ start_lttng_relayd_opt 1 "-d" ""
+
+ pid=$(pgrep "$RELAYD_MATCH")
+ ok $? "Found lttng-relayd"
+
+ cwd=$(readlink "/proc/${pid}/cwd")
+
+ is "$cwd" "$expected_working_dir" "Working directory is $expected_working_dir"
+
+ stop_lttng_relayd
+ rm -rf "$working_dir"
+}
+
+function test_relayd_background()
+{
+ local working_dir
+ local cwd
+ local pid
+
+ working_dir=$(mktemp -d)
+
+ diag "Test lttng-relayd background mode change working directory"
+
+ start_lttng_relayd_opt 1 "-b" "--working-directory $working_dir"
+
+ pid=$(pgrep "$RELAYD_MATCH")
+ ok $? "Found lttng-relayd"
+
+ cwd=$(readlink "/proc/${pid}/cwd")
+
+ is "$cwd" "$working_dir" "Working directory changed"
+
+ stop_lttng_relayd
+ rm -rf "$working_dir"
+}
+
+function test_relayd_background_no_working_dir()
+{
+ local expected_working_dir="/"
+ local cwd
+ local pid
+
+ diag "Test lttng-relayd background working directory"
+
+ start_lttng_relayd_opt 1 "-b" ""
+
+ pid=$(pgrep "$RELAYD_MATCH")
+ ok $? "Found lttng-relayd"
+
+ cwd=$(readlink "/proc/${pid}/cwd")
+
+ is "$cwd" "$expected_working_dir" "Working directory is $expected_working_dir"
+
+ stop_lttng_relayd
+ rm -rf "$working_dir"
+}
+
+function test_relayd_debug_permission()
+{
+ local output_pattern='Working directory \".*\" is not writable'
+ local working_dir
+ local cwd
+ local pid
+
+ working_dir=$(mktemp -d)
+
+ diag "Test lttng-relayd change working directory on non writable directory"
+
+ # Removing write access to working dir
+ okx chmod -w "$working_dir"
+
+ # Redirect the error output to a temporary file
+ ERROR_OUTPUT_DEST=$(mktemp)
+ start_lttng_relayd_opt 1 "-b" "-v --working-dir $working_dir"
+
+ pid=$(pgrep "$RELAYD_MATCH")
+ ok $? "Found lttng-relayd"
+
+ cwd=$(readlink "/proc/${pid}/cwd")
+ is "$cwd" "$working_dir" "Working directory changed"
+
+ grep -q "$output_pattern" "$ERROR_OUTPUT_DEST"
+ ok $? "Warning about missing write permission is present"
+
+ stop_lttng_relayd
+ rm "$ERROR_OUTPUT_DEST"
+ rm -rf "$working_dir" "$ERROR_OUTPUT_DEST"
+ ERROR_OUTPUT_DEST=/dev/null
+}
+
+function test_relayd_failure()
+{
+ local output_pattern='Failed to change working directory to'
+ local relayd_bin_path="$DIR/../src/bin/lttng-relayd/$RELAYD_BIN"
+
+ local working_dir
+ local working_dir_imaginary
+ local output_dest
+ local pid
+
+ working_dir="$(mktemp -d)"
+ working_dir_imaginary="${working_dir}/imaginary_directory"
+ output_dest=$(mktemp)
+
+ diag "Test lttng-relayd normal mode change non-existing directory"
+
+ $relayd_bin_path -b --working-directory "$working_dir_imaginary" > "$output_dest" 2>&1
+ test $? -eq "1"
+ ok $? "Expect failure to start lttng-relayd for non-existent working directory"
+
+ pid=$(pgrep "$RELAYD_MATCH")
+ if [ -z "$pid" ]; then
+ pass "No lttng-relayd present"
+ else
+ fail "No lttng-relayd present"
+ stop_lttng_relayd_notap
+ fi
+
+ grep -q "$output_pattern" "$output_dest"
+ ok $? "Found error message: invalid directory"
+
+ rm "$output_dest"
+ rm -rf "$working_dir"
+}
+
+TESTS=(
+ test_relayd
+ test_relayd_daemon
+ test_relayd_daemon_no_working_dir
+ test_relayd_background
+ test_relayd_background_no_working_dir
+ test_relayd_debug_permission
+ test_relayd_failure
+)
+
+for fct_test in "${TESTS[@]}";
+do
+ if ! ${fct_test}; then
+ break;
+ fi
+done
projects / lttng-tools.git / blobdiff