Tests: add kernel --function basic test case
[lttng-tools.git] / tests / utils / utils.sh
index b326c5bcf94166358e341217078aa1721bb2c8e7..8e76ce4976413ec2e50e6eac9e971cf72b7818d5 100644 (file)
@@ -74,6 +74,42 @@ trap full_cleanup SIGINT SIGTERM
 
 trap null_pipes SIGPIPE
 
+# Check pgrep from env, default to pgrep if none
+if [ -z "$PGREP" ]; then
+       PGREP=pgrep
+fi
+
+# Due to the renaming of threads we need to use the full command (pgrep -f) to
+# identify the pids for multiple lttng related processes. The problem with "pgrep
+# -f" is that it ends up also looking at the arguments. We use a two stage
+# lookup. The first one is using "pgrep -f" yielding potential candidate.
+# The second on perform grep on the basename of the first field of the
+# /proc/pid/cmdline of the previously identified pids. The first field
+# correspond to the actual command.
+function lttng_pgrep ()
+{
+       local pattern=$1
+       local possible_pids
+       local full_command_no_argument
+       local command_basename
+
+       possible_pids=$($PGREP -f "$pattern")
+       if [ -z "$possible_pids" ]; then
+               return 0
+       fi
+
+       while IFS= read -r pid ; do
+               # /proc/pid/cmdline is null separated.
+               if full_command_no_argument=$(cut -d '' -f 1 2>/dev/null < /proc/"$pid"/cmdline); then
+                       command_basename=$(basename "$full_command_no_argument")
+                       if grep -q "$pattern" <<< "$command_basename"; then
+                               echo "$pid"
+                       fi
+               fi
+       done <<< "$possible_pids"
+       return 0
+}
+
 function print_ok ()
 {
        # Check if we are a terminal
@@ -139,10 +175,19 @@ 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."
 }
 
 function enable_kernel_lttng_event
@@ -280,6 +325,28 @@ function lttng_disable_kernel_syscall_fail()
        lttng_disable_kernel_syscall 1 "$@"
 }
 
+function lttng_enable_kernel_function_event ()
+{
+       local expected_to_fail="$1"
+       local sess_name="$2"
+       local target="$3"
+       local event_name="$4"
+
+       "$TESTDIR/../src/bin/lttng/$LTTNG_BIN" enable-event --kernel --function="$target" "$event_name" -s "$sess_name" > "$OUTPUT_DEST" 2> "$ERROR_OUTPUT_DEST"
+       ret=$?
+       if [[ $expected_to_fail -eq "1" ]]; then
+               test $ret -ne "0"
+               ok $? "Enable kernel function event for session $sess_name failed as expected"
+       else
+               ok $ret "Enable kernel function event for session $sess_name"
+       fi
+}
+
+function lttng_enable_kernel_function_event_ok ()
+{
+       lttng_enable_kernel_function_event 0 "$@"
+}
+
 function lttng_enable_kernel_userspace_probe_event ()
 {
        local expected_to_fail="$1"
@@ -392,7 +459,7 @@ function start_lttng_relayd_opt()
 
        DIR=$(readlink -f "$TESTDIR")
 
-       if [ -z $(pgrep $RELAYD_MATCH) ]; then
+       if [ -z $(lttng_pgrep "$RELAYD_MATCH") ]; then
                # shellcheck disable=SC2086
                $DIR/../src/bin/lttng-relayd/$RELAYD_BIN $process_mode $opt 1> $OUTPUT_DEST 2> $ERROR_OUTPUT_DEST
                #$DIR/../src/bin/lttng-relayd/$RELAYD_BIN $opt -vvv >>/tmp/relayd.log 2>&1 &
@@ -441,7 +508,7 @@ function stop_lttng_relayd_opt()
        local retval=0
        local pids=
 
-       pids=$(pgrep "$RELAYD_MATCH")
+       pids=$(lttng_pgrep "$RELAYD_MATCH")
        if [ -z "$pids" ]; then
                if [ "$withtap" -eq "1" ]; then
                        pass "No relay daemon to kill"
@@ -460,7 +527,7 @@ function stop_lttng_relayd_opt()
        else
                out=1
                while [ -n "$out" ]; do
-                       out=$(pgrep "$RELAYD_MATCH")
+                       out=$(lttng_pgrep "$RELAYD_MATCH")
                        if [ -n "$dtimeleft_s" ]; then
                                if [ $dtimeleft_s -lt 0 ]; then
                                        out=
@@ -538,7 +605,7 @@ function start_lttng_sessiond_opt()
        : "${LTTNG_SESSION_CONFIG_XSD_PATH="${DIR}/../src/common/config/"}"
        export LTTNG_SESSION_CONFIG_XSD_PATH
 
-       if [ -z "$(pgrep "${SESSIOND_MATCH}")" ]; then
+       if [ -z "$(lttng_pgrep "${SESSIOND_MATCH}")" ]; then
                # Have a load path ?
                if [ -n "$load_path" ]; then
                        # shellcheck disable=SC2086
@@ -590,10 +657,10 @@ function stop_lttng_sessiond_opt()
        local retval=0
 
        local runas_pids=
-       runas_pids=$(pgrep "$RUNAS_MATCH")
+       runas_pids=$(lttng_pgrep "$RUNAS_MATCH")
 
        local pids=
-       pids=$(pgrep "$SESSIOND_MATCH")
+       pids=$(lttng_pgrep "$SESSIOND_MATCH")
 
        if [ -n "$runas_pids" ]; then
                pids="$pids $runas_pids"
@@ -601,7 +668,9 @@ function stop_lttng_sessiond_opt()
 
        if [ -z "$pids" ]; then
                if [ "$withtap" -eq "1" ]; then
-                       pass "No session daemon to kill"
+                       fail "No session daemon to kill"
+               else
+                       BAIL_OUT "No session daemon to kill"
                fi
                return 0
        fi
@@ -617,7 +686,7 @@ function stop_lttng_sessiond_opt()
        else
                out=1
                while [ -n "$out" ]; do
-                       out=$(pgrep "${SESSIOND_MATCH}")
+                       out=$(lttng_pgrep "${SESSIOND_MATCH}")
                        if [ -n "$dtimeleft_s" ]; then
                                if [ $dtimeleft_s -lt 0 ]; then
                                        out=
@@ -629,7 +698,7 @@ function stop_lttng_sessiond_opt()
                done
                out=1
                while [ -n "$out" ]; do
-                       out=$(pgrep "$CONSUMERD_MATCH")
+                       out=$(lttng_pgrep "$CONSUMERD_MATCH")
                        if [ -n "$dtimeleft_s" ]; then
                                if [ $dtimeleft_s -lt 0 ]; then
                                        out=
@@ -655,7 +724,7 @@ function stop_lttng_sessiond_opt()
 
                        if [ -n "$modules" ]; then
                                diag "Unloading all LTTng modules"
-                               modprobe -r "$modules"
+                               modprobe --remove "$modules"
                        fi
                fi
        fi
@@ -683,7 +752,7 @@ function sigstop_lttng_sessiond_opt()
                return
        fi
 
-       PID_SESSIOND="$(pgrep "${SESSIOND_MATCH}") $(pgrep "$RUNAS_MATCH")"
+       PID_SESSIOND="$(lttng_pgrep "${SESSIOND_MATCH}") $(lttng_pgrep "$RUNAS_MATCH")"
 
        if [ "$withtap" -eq "1" ]; then
                diag "Sending SIGSTOP to lt-$SESSIOND_BIN and $SESSIOND_BIN pids: $(echo "$PID_SESSIOND" | tr '\n' ' ')"
@@ -697,7 +766,7 @@ function sigstop_lttng_sessiond_opt()
        else
                out=1
                while [ $out -ne 0 ]; do
-                       pid="$(pgrep "$SESSIOND_MATCH")"
+                       pid="$(lttng_pgrep "$SESSIOND_MATCH")"
 
                        # Wait until state becomes stopped for session
                        # daemon(s).
@@ -745,7 +814,7 @@ function stop_lttng_consumerd_opt()
 
        local retval=0
 
-       PID_CONSUMERD="$(pgrep "$CONSUMERD_MATCH")"
+       PID_CONSUMERD="$(lttng_pgrep "$CONSUMERD_MATCH")"
 
        if [ -z "$PID_CONSUMERD" ]; then
                if [ "$withtap" -eq "1" ]; then
@@ -765,7 +834,7 @@ function stop_lttng_consumerd_opt()
        else
                out=1
                while [ $out -ne 0 ]; do
-                       pid="$(pgrep "$CONSUMERD_MATCH")"
+                       pid="$(lttng_pgrep "$CONSUMERD_MATCH")"
 
                        # If consumerds are still present check their status.
                        # A zombie status qualifies the consumerd as *killed*
@@ -812,7 +881,7 @@ function sigstop_lttng_consumerd_opt()
        local withtap=$1
        local signal=SIGSTOP
 
-       PID_CONSUMERD="$(pgrep "$CONSUMERD_MATCH")"
+       PID_CONSUMERD="$(lttng_pgrep "$CONSUMERD_MATCH")"
 
        diag "Sending SIGSTOP to $CONSUMERD_BIN pids: $(echo "$PID_CONSUMERD" | tr '\n' ' ')"
 
@@ -828,7 +897,7 @@ function sigstop_lttng_consumerd_opt()
        else
                out=1
                while [ $out -ne 0 ]; do
-                       pid="$(pgrep "$CONSUMERD_MATCH")"
+                       pid="$(lttng_pgrep "$CONSUMERD_MATCH")"
 
                        # Wait until state becomes stopped for all
                        # consumers.
@@ -1170,8 +1239,16 @@ 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"
 }
 
@@ -1860,7 +1937,9 @@ function validate_directory_empty ()
 {
        local trace_path="$1"
 
-       files="$(ls -A "$trace_path")"
+       # 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\""
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