X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=tests%2Futils%2Futils.sh;h=c9907fd6d37fe8e3cf0401791cc0c6cf90d83682;hb=9ff8f3ca6e45f1e083a7cb87605ce00b7b4e3008;hp=9df9a0bf0985fed35cdf2da8c9dc79cbbbef14b0;hpb=9f0e230a68c5715f28372aa3df9ad1cb13cf6b43;p=lttng-tools.git

diff --git a/tests/utils/utils.sh b/tests/utils/utils.sh
index 9df9a0bf0..c9907fd6d 100644
--- a/tests/utils/utils.sh
+++ b/tests/utils/utils.sh
@@ -1,17 +1,7 @@
-# Copyright (C) - 2012 David Goulet <dgoulet@efficios.com>
+# Copyright (C) 2012 David Goulet <dgoulet@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.
+# SPDX-License-Identifier: LGPL-2.1-only
 #
-# 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
 
 SESSIOND_BIN="lttng-sessiond"
 SESSIOND_MATCH=".*lttng-sess.*"
@@ -26,6 +16,11 @@ BABELTRACE_BIN="babeltrace"
 OUTPUT_DEST=/dev/null
 ERROR_OUTPUT_DEST=/dev/null
 
+# To match 20201127-175802
+date_time_pattern="[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]-[0-9][0-9][0-9][0-9][0-9][0-9]"
+# The size of a long on this system
+system_long_bit_size=$(getconf LONG_BIT)
+
 # Minimal kernel version supported for session daemon tests
 KERNEL_MAJOR_VERSION=2
 KERNEL_MINOR_VERSION=6
@@ -46,7 +41,7 @@ export LTTNG_SESSIOND_PATH="/bin/true"
 
 source $TESTDIR/utils/tap/tap.sh
 
-if [ -z $LTTNG_TEST_TEARDOWN_TIMEOUT ]; then
+if [ -z ${LTTNG_TEST_TEARDOWN_TIMEOUT+x} ]; then
 	LTTNG_TEST_TEARDOWN_TIMEOUT=60
 fi
 
@@ -135,6 +130,38 @@ function randstring()
 	echo
 }
 
+# Helpers for get_possible_cpus.
+function get_possible_cpus_count_from_sysfs_possible_mask()
+{
+	local max_possible_cpu_id=$(cut -d '-' -f 2 < /sys/devices/system/cpu/possible)
+	echo $((max_possible_cpu_id+1))
+}
+
+function get_max_cpus_count_from_sysfs_cpu_directories()
+{
+	local max_possible_cpu_id= \
+		$(find /sys/devices/system/cpu/ -mindepth 1 -maxdepth 1 -regex ".+cpu[0-9]+" | \
+		  sed -e 's/cpu//g' | \
+		  awk -F '/' '{ if ($NF > N) N = $NF } END { print N }')
+	echo $((max_possible_cpu_id+1))
+}
+
+# Return the number of possible CPUs.
+function get_possible_cpus_count()
+{
+	local possible_cpus_count=$(get_possible_cpus_count_from_sysfs_possible_mask)
+
+	if [ $? -ne 0 ]; then
+		possible_cpus_count=$(get_max_cpus_count_from_sysfs_cpu_directories)
+		local configured_cpus_count=$(getconf _NPROCESSORS_CONF)
+		possible_cpus_count=$(($configured_cpus_count > $possible_cpus_count \
+							      ? $configured_cpus_count \
+							      : $possible_cpus_count))
+	fi
+
+	echo $possible_cpus_count
+}
+
 # Return the number of _configured_ CPUs.
 function conf_proc_count()
 {
@@ -149,10 +176,33 @@ function conf_proc_count()
 # Bail out on failure
 function validate_lttng_modules_present ()
 {
+	# Check for loadable modules.
 	modprobe -n lttng-tracer 2>/dev/null
-	if [ $? -ne 0  ]; then
-		BAIL_OUT "LTTng modules not detected."
+	if [ $? -eq 0 ]; then
+		return 0
 	fi
+
+	# Check for builtin modules.
+	ls /proc/lttng > /dev/null 2>&1
+	if [ $? -eq 0 ]; then
+		return 0
+	fi
+
+	BAIL_OUT "LTTng modules not detected."
+}
+
+# Run the lttng binary.
+#
+# The first two arguments are stdout and stderr redirect paths, respectively.
+# The rest of the arguments are forwarded to the lttng binary
+function _run_lttng_cmd
+{
+	local stdout_dest="$1"
+	local stderr_dest="$2"
+	shift 2
+
+	diag "$TESTDIR/../src/bin/lttng/$LTTNG_BIN $*"
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN "$@" 1> "$stdout_dest" 2> "$stderr_dest"
 }
 
 function enable_kernel_lttng_event
@@ -331,9 +381,9 @@ function lttng_enable_kernel_channel()
 	local expected_to_fail=$2
 	local sess_name=$3
 	local channel_name=$4
-	local opt=$5
+	local opts="${@:5}"
 
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -k $channel_name -s $sess_name $opt 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -k $channel_name -s $sess_name $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 	ret=$?
 	if [[ $expected_to_fail -eq "1" ]]; then
 		test "$ret" -ne "0"
@@ -665,7 +715,7 @@ function stop_lttng_sessiond_opt()
 
 			if [ -n "$modules" ]; then
 				diag "Unloading all LTTng modules"
-				modprobe -r "$modules"
+				modprobe --remove "$modules"
 			fi
 		fi
 	fi
@@ -946,9 +996,9 @@ function enable_ust_lttng_channel ()
 	local expected_to_fail=$2
 	local sess_name=$3
 	local channel_name=$4
-	local opt=$5
+	local opts="${@:5}"
 
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -u $channel_name -s $sess_name $opt 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-channel -u $channel_name -s $sess_name $opts 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 	ret=$?
 	if [[ $expected_to_fail -eq "1" ]]; then
 		test "$ret" -ne "0"
@@ -1107,37 +1157,80 @@ function enable_jul_lttng_event_loglevel()
 
 function enable_log4j_lttng_event()
 {
-	sess_name=$1
-	event_name="$2"
-	channel_name=$3
+	local sess_name=$1
+	local event_name=$2
+	local channel_name=$3
 
-	if [ -z $channel_name ]; then
-		# default channel if none specified
-		chan=""
-	else
-		chan="-c $channel_name"
+	local chan_opt=()
+
+	# default channel if none specified
+	if [ -n "$channel_name" ]; then
+		chan_opt=("-c" "$channel_name")
 	fi
 
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" $chan -s $sess_name -l 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
-	ok $? "Enable LOG4J event $event_name for session $sess_name"
+	_run_lttng_cmd "$OUTPUT_DEST" "$ERROR_OUTPUT_DEST" \
+		enable-event "$event_name" "${chan_opt[@]}" -s "$sess_name" --log4j
+	ok $? "Enable LOG4J event '$event_name' for session '$sess_name'"
+}
+
+function enable_log4j_lttng_event_filter()
+{
+	local sess_name=$1
+	local event_name=$2
+	local filter=$3
+
+	_run_lttng_cmd "$OUTPUT_DEST" "$ERROR_OUTPUT_DEST" \
+		enable-event "$event_name" -s "$sess_name" --log4j --filter "$filter"
+	ok $? "Enable LOG4J event '$event_name' with filter '$filter' for session '$sess_name'"
+}
+
+function enable_log4j_lttng_event_filter_loglevel_only()
+{
+	local sess_name=$1
+	local event_name=$2
+	local filter=$3
+	local loglevel=$4
+
+	_run_lttng_cmd "$OUTPUT_DEST" "$ERROR_OUTPUT_DEST" \
+		enable-event --loglevel-only "$loglevel" "$event_name" -s "$sess_name" -l --filter "$filter"
+	ok $? "Enable LOG4J event '$event_name' with filter '$filter' and loglevel-only '$loglevel' for session '$sess_name'"
 }
 
 function enable_log4j_lttng_event_loglevel()
 {
 	local sess_name=$1
-	local event_name="$2"
+	local event_name=$2
 	local loglevel=$3
 	local channel_name=$4
 
-	if [ -z $channel_name ]; then
-		# default channel if none specified
-		chan=""
-	else
-		chan="-c $channel_name"
+
+	# default channel if none specified
+	if [ -n "$channel_name" ]; then
+		chan_opt=("-c" "$channel_name")
+	fi
+
+	_run_lttng_cmd "$OUTPUT_DEST" "$ERROR_OUTPUT_DEST" \
+		enable-event --loglevel "$loglevel" "$event_name" "${chan_opt[@]}" -s "$sess_name" --log4j
+	ok $? "Enable LOG4J event '$event_name' for session '$sess_name' with loglevel '$loglevel'"
+}
+
+function enable_log4j_lttng_event_loglevel_only()
+{
+	local sess_name=$1
+	local event_name=$2
+	local loglevel=$3
+	local channel_name=$4
+
+	local chan_opt=()
+
+	# default channel if none specified
+	if [ -n "$channel_name" ]; then
+		chan_opt=("-c" "$channel_name")
 	fi
 
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event --loglevel $loglevel "$event_name" $chan -s $sess_name -l 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
-	ok $? "Enable LOG4J event $event_name for session $sess_name with loglevel $loglevel"
+	_run_lttng_cmd "$OUTPUT_DEST" "$ERROR_OUTPUT_DEST" \
+		enable-event --loglevel-only "$loglevel" "$event_name" "${chan_opt[@]}" -s "$sess_name" --log4j
+	ok $? "Enable LOG4J event '$event_name' for session '$sess_name' with loglevel-only '$loglevel'"
 }
 
 function enable_python_lttng_event()
@@ -1180,8 +1273,16 @@ function enable_ust_lttng_event_filter()
 	local sess_name="$1"
 	local event_name="$2"
 	local filter="$3"
+	local channel_name=$4
+
+	if [ -z $channel_name ]; then
+		# default channel if none specified
+		chan=""
+	else
+		chan="-c $channel_name"
+	fi
 
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event "$event_name" -s $sess_name -u --filter "$filter" 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event $chan "$event_name" -s $sess_name -u --filter "$filter" 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 	ok $? "Enable event $event_name with filtering for session $sess_name"
 }
 
@@ -1236,8 +1337,9 @@ function disable_log4j_lttng_event ()
 	local sess_name="$1"
 	local event_name="$2"
 
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN disable-event "$event_name" -s $sess_name -l >/dev/null 2>&1
-	ok $? "Disable LOG4J event $event_name for session $sess_name"
+	_run_lttng_cmd "$OUTPUT_DEST" "$ERROR_OUTPUT_DEST" \
+		disable-event "$event_name" -s "$sess_name" --log4j
+	ok $? "Disable LOG4J event '$event_name' for session '$sess_name'"
 }
 
 function disable_python_lttng_event ()
@@ -1422,7 +1524,7 @@ function lttng_snapshot_record ()
 	local sess_name=$1
 	local trace_path=$2
 
-	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot record -s $sess_name $trace_path 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN snapshot record -s "$sess_name" "$trace_path" 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
 	ok $? "Snapshot recorded"
 }
 
@@ -1469,8 +1571,9 @@ function lttng_load_fail()
 
 function lttng_track()
 {
-	local expected_to_fail=$1
-	local opts=$2
+	local expected_to_fail="$1"
+	shift 1
+	local opts="$@"
 	$TESTDIR/../src/bin/lttng/$LTTNG_BIN track $opts >$OUTPUT_DEST
 	ret=$?
 	if [[ $expected_to_fail -eq "1" ]]; then
@@ -1493,8 +1596,9 @@ function lttng_track_fail()
 
 function lttng_untrack()
 {
-	local expected_to_fail=$1
-	local opts=$2
+	local expected_to_fail="$1"
+	shift 1
+	local opts="$@"
 	$TESTDIR/../src/bin/lttng/$LTTNG_BIN untrack $opts >$OUTPUT_DEST
 	ret=$?
 	if [[ $expected_to_fail -eq "1" ]]; then
@@ -1528,6 +1632,46 @@ function lttng_untrack_kernel_all_ok()
 	ok $? "Lttng untrack all pid on the kernel domain"
 }
 
+function lttng_track_ust_ok()
+{
+	lttng_track_ok -u "$@"
+}
+
+function lttng_track_ust_fail()
+{
+	lttng_track_fail -u "$@"
+}
+
+function lttng_track_kernel_ok()
+{
+	lttng_track_ok -k "$@"
+}
+
+function lttng_track_kernel_fail()
+{
+	lttng_track_fail -k "$@"
+}
+
+function lttng_untrack_ust_ok()
+{
+	lttng_untrack_ok -u "$@"
+}
+
+function lttng_untrack_ust_fail()
+{
+	lttng_untrack_fail -u "$@"
+}
+
+function lttng_untrack_kernel_ok()
+{
+	lttng_untrack_ok -k "$@"
+}
+
+function lttng_untrack_kernel_fail()
+{
+	lttng_untrack_fail -k "$@"
+}
+
 function lttng_add_context_list()
 {
 	$TESTDIR/../src/bin/lttng/$LTTNG_BIN add-context --list 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
@@ -1573,6 +1717,40 @@ function add_context_kernel_fail()
 	add_context_lttng 1 -k "$@"
 }
 
+function wait_live_trace_ready ()
+{
+	local url=$1
+	local zero_client_match=0
+
+	diag "Waiting for live trace at url: $url"
+	while [ $zero_client_match -eq 0 ]; do
+		zero_client_match=$($BABELTRACE_BIN -i lttng-live $url | grep "0 client(s) connected" | wc -l)
+		sleep 0.5
+	done
+	pass "Waiting for live trace at url: $url"
+}
+
+function wait_live_viewer_connect ()
+{
+	local url=$1
+	local one_client_match=0
+
+	diag "Waiting for live viewers on url: $url"
+	while [ $one_client_match -eq 0 ]; do
+		one_client_match=$($BABELTRACE_BIN -i lttng-live $url | grep "1 client(s) connected" | wc -l)
+		sleep 0.5
+	done
+	pass "Waiting for live viewers on url: $url"
+}
+
+function bail_out_if_no_babeltrace()
+{
+	which "$BABELTRACE_BIN" >/dev/null
+	if [ $? -ne 0 ]; then
+		LTTNG_BAIL_OUT "\"$BABELTRACE_BIN\" binary not found. Skipping tests"
+	fi
+}
+
 function validate_metadata_event ()
 {
 	local event_name=$1
@@ -1690,6 +1868,36 @@ function validate_trace_count
 	ok $? "Read a total of $cnt events, expected $expected_count"
 }
 
+function validate_trace_count_range_incl_min_excl_max
+{
+	local event_name=$1
+	local trace_path=$2
+	local expected_min=$3
+	local expected_max=$4
+
+	which $BABELTRACE_BIN >/dev/null
+	if [ $? -ne 0 ]; then
+	    skip 0 "Babeltrace binary not found. Skipping trace validation"
+	fi
+
+	cnt=0
+	OLDIFS=$IFS
+	IFS=","
+	for i in $event_name; do
+		traced=$($BABELTRACE_BIN $trace_path 2>/dev/null | grep $i | wc -l)
+		if [ "$traced" -ge $expected_min ]; then
+			pass "Validate trace for event $i, $traced events"
+		else
+			fail "Validate trace for event $i"
+			diag "Found $traced occurences of $i"
+		fi
+		cnt=$(($cnt + $traced))
+	done
+	IFS=$OLDIFS
+	test $cnt -lt $expected_max
+	ok $? "Read a total of $cnt events, expected between [$expected_min, $expected_max["
+}
+
 function trace_first_line
 {
 	local trace_path=$1
@@ -1769,6 +1977,33 @@ function validate_trace_empty()
 	return $ret
 }
 
+function validate_directory_empty ()
+{
+	local trace_path="$1"
+
+	# Do not double quote `$trace_path` below as we want wildcards to be
+	# expanded.
+	files="$(ls -A $trace_path)"
+	ret=$?
+	if [ $ret -ne 0 ]; then
+		fail "Failed to list content of directory \"$trace_path\""
+		return $ret
+	fi
+
+	nb_files="$(echo -n "$files" | wc -l)"
+	ok $nb_files "Directory \"$trace_path\" is empty"
+}
+
+function validate_trace_session_ust_empty()
+{
+	validate_directory_empty "$1"/ust
+}
+
+function validate_trace_session_kernel_empty()
+{
+	validate_trace_empty "$1"/kernel
+}
+
 function regenerate_metadata ()
 {
 	local expected_to_fail=$1
@@ -1846,7 +2081,7 @@ function rotate_session_fail ()
 
 function destructive_tests_enabled ()
 {
-	if [ ${LTTNG_ENABLE_DESTRUCTIVE_TESTS} = "will-break-my-system" ]; then
+	if [ "$LTTNG_ENABLE_DESTRUCTIVE_TESTS" = "will-break-my-system" ]; then
 		return 0
 	else
 		return 1
@@ -1904,3 +2139,254 @@ function lttng_enable_rotation_size_fail ()
 {
 	lttng_enable_rotation_size 1 $@
 }
+
+function lttng_clear_session ()
+{
+	local expected_to_fail=$1
+	local sess_name=$2
+
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN clear $sess_name 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
+	ret=$?
+	if [[ $expected_to_fail -eq "1" ]]; then
+		test "$ret" -ne "0"
+		ok $? "Expected fail on clear session $sess_name"
+	else
+		ok $ret "Clear session $sess_name"
+	fi
+}
+
+function lttng_clear_session_ok ()
+{
+	lttng_clear_session 0 $@
+}
+
+function lttng_clear_session_fail ()
+{
+	lttng_clear_session 1 $@
+}
+
+function lttng_clear_all ()
+{
+	$TESTDIR/../src/bin/lttng/$LTTNG_BIN clear --all 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
+	ok $? "Clear all lttng sessions"
+}
+
+function validate_path_pattern ()
+{
+	local message=$1
+	local pattern=$2
+	# Base path is only used in error case and is used to list the content
+	# of the base path.
+	local base_path=$3
+
+
+	[ -f $pattern ]
+	ret=$?
+	ok $ret "$message"
+
+	if [ "$ret" -ne "0" ]; then
+		diag "Path pattern expected: $pattern"
+		# List the tracepath for more info. We use find as a recursive
+		# directory lister.
+		diag "The base path content:"
+		find "$base_path" -print
+	fi
+}
+
+function validate_trace_path_ust_uid ()
+{
+	local trace_path=$1
+	local session_name=$2
+	local uid=$UID
+	local pattern="$trace_path/$session_name-$date_time_pattern/ust/uid/$uid/${system_long_bit_size}-bit/metadata"
+
+	validate_path_pattern "UST per-uid trace path is valid" "$pattern" "$trace_path"
+}
+
+function validate_trace_path_ust_uid_network ()
+{
+	local trace_path=$1
+	local session_name=$2
+	local base_path=$3
+	local uid=$UID
+	local hostname=$HOSTNAME
+	local pattern
+	local ret
+
+	# If the session was given a network base path (e.g
+	# 127.0.0.1/my/custom/path on creation, there is no session name
+	# component to the path on the relayd side. Caller can simply not pass a
+	# session name for this scenario.
+	if [ -n "$session_name" ]; then
+		session_name="$session_name-$date_time_pattern"
+		if [ -n "$base_path" ]; then
+			fail "Session name and base path are mutually exclusive"
+			return
+		fi
+	fi
+
+	pattern="$trace_path/$hostname/$base_path/$session_name/ust/uid/$uid/${system_long_bit_size}-bit/metadata"
+
+	validate_path_pattern "UST per-uid network trace path is valid" "$pattern" "$trace_path"
+}
+
+function validate_trace_path_ust_uid_snapshot_network ()
+{
+	local trace_path=$1
+	local session_name=$2
+	local snapshot_name=$3
+	local snapshot_number=$4
+	local base_path=$5
+	local hostname=$HOSTNAME
+	local uid=$UID
+	local pattern
+	local ret
+
+	# If the session/output was given a network base path (e.g
+	# 127.0.0.1/my/custom/path on creation, there is no session name
+	# component to the path on the relayd side. Caller can simply not pass a
+	# session name for this scenario.
+	if [ -n "$session_name" ]; then
+		session_name="$session_name-$date_time_pattern"
+		if [ -n "$base_path" ]; then
+			fail "Session name and base path are mutually exclusive"
+			return
+		fi
+	fi
+
+	pattern="$trace_path/$hostname/$base_path/$session_name/$snapshot_name-$date_time_pattern-$snapshot_number/ust/uid/$uid/${system_long_bit_size}-bit/metadata"
+
+	validate_path_pattern "UST per-uid network snapshot trace path is valid" "$pattern" "$trace_path"
+}
+
+function validate_trace_path_ust_uid_snapshot ()
+{
+	local trace_path=$1
+	local session_name=$2
+	local snapshot_name=$3
+	local snapshot_number=$4
+	local base_path=$5
+	local uid=$UID
+	local pattern
+	local ret
+
+	# If the session/output was given a network base path (e.g
+	# 127.0.0.1/my/custom/path) on creation, there is no session name
+	# component to the path on the relayd side. Caller can simply not pass a
+	# session name for this scenario.
+	if [ -n "$session_name" ]; then
+		session_name="$session_name-$date_time_pattern"
+		if [ -n "$base_path" ]; then
+			fail "Session name and base path are mutually exclusive"
+			return
+		fi
+	fi
+
+	pattern="$trace_path/$base_path/$session_name/$snapshot_name-$date_time_pattern-$snapshot_number/ust/uid/$uid/${system_long_bit_size}-bit/metadata"
+
+	validate_path_pattern "UST per-uid snapshot trace path is valid" "$pattern" "$trace_path"
+}
+
+function validate_trace_path_ust_pid ()
+{
+	local trace_path=$1
+	local session_name=$2
+	local app_string=$3
+	local pid=$4
+	local pattern
+	local ret
+
+	# If the session was given a trace path on creation, there is no session
+	# name component to the path. Caller can simply not pass a session name
+	# for this scenario.
+	if [ -n "$session_name" ]; then
+		session_name="$session_name-$date_time_pattern"
+	fi
+
+	pattern="$trace_path/$session_name/ust/pid/$pid/$app_string-*-$date_time_pattern/metadata"
+
+	validate_path_pattern "UST per-pid trace path is valid" "$pattern" "$trace_path"
+}
+
+function validate_trace_path_kernel ()
+{
+	local trace_path=$1
+	local session_name=$2
+	local pattern
+
+	# If the session was given a trace path on creation, there is no session
+	# name component to the path. Caller can simply not pass a session name
+	# for this scenario.
+	if [ -n "$session_name" ]; then
+		session_name="$session_name-$date_time_pattern"
+	fi
+
+	pattern="$trace_path/$session_name/kernel/metadata"
+
+	validate_path_pattern "Kernel trace path is valid" "$pattern" "$trace_path"
+}
+
+function validate_trace_path_kernel_network ()
+{
+	local trace_path=$1
+	local session_name=$2
+	local hostname=$HOSTNAME
+	local pattern="$trace_path/$hostname/$session_name-$date_time_pattern/kernel/metadata"
+
+	validate_path_pattern "Kernel network trace path is valid" "$pattern" "$trace_path"
+}
+
+function validate_trace_path_kernel_snapshot ()
+{
+	local trace_path=$1
+	local session_name=$2
+	local snapshot_name=$3
+	local snapshot_number=$4
+	local base_path=$5
+	local pattern
+	local ret
+
+	# If the session/output was given a network base path (e.g
+	# 127.0.0.1/my/custom/path on creation, there is no session name
+	# component to the path on the relayd side. Caller can simply not pass a
+	# session name for this scenario.
+	if [ -n "$session_name" ]; then
+		session_name="$session_name-$date_time_pattern"
+		if [ -n "$base_path" ]; then
+			fail "Session name and base path are mutually exclusive"
+			return
+		fi
+	fi
+
+	pattern="$trace_path/$base_path/$session_name/$snapshot_name-$date_time_pattern-$snapshot_number/kernel/metadata"
+
+	validate_path_pattern "Kernel snapshot trace path is valid" "$pattern" "$trace_path"
+}
+
+function validate_trace_path_kernel_snapshot_network ()
+{
+	local trace_path=$1
+	local session_name=$2
+	local snapshot_name=$3
+	local snapshot_number=$4
+	local base_path=$5
+	local hostname=$HOSTNAME
+	local pattern
+	local ret
+
+	# If the session/output was given a network base path (e.g
+	# 127.0.0.1/my/custom/path on creation, there is no session name
+	# component to the path on the relayd side. Caller can simply not pass a
+	# session name for this scenario.
+	if [ -n "$session_name" ]; then
+		session_name="$session_name-$date_time_pattern"
+		if [ -n "$base_path" ]; then
+			fail "Session name and base path are mutually exclusive"
+			return
+		fi
+	fi
+
+	pattern="$trace_path/$hostname/$base_path/$session_name/$snapshot_name-$date_time_pattern-$snapshot_number/kernel/metadata"
+
+	validate_path_pattern "Kernel network snapshot trace path is valid" "$pattern" "$trace_path"
+}