tests: fix kill problems

There were several failures (missing tmp files, missing pids) on travis
build farm which I couldn't track down completely. Here we fix some
possible issues:
 - mktemp -u is unsafe, maybe even in practice if there is a bad random
   generator
 - make sure that mktemp does not give us pure integer filnames which
   would not work for "kill by-name"
 - avoid using trap, could be that it removed tmp files on wrong signals

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>

4 files changed, 14 insertions, 12 deletions

diff --git a/tests/ts/kill/all_processes b/tests/ts/kill/all_processes
index af863d56a..93f78ad60 100755
--- a/tests/ts/kill/all_processes
+++ b/tests/ts/kill/all_processes
@@ -25,9 +25,8 @@ ts_check_test_command "$TS_HELPER_SIGRECEIVE"
 
 . "$TS_SELF/kill_functions.sh"
 
-HELPER_SYMLINK="$TS_CWD/$(mktemp -u XXXXXXXXXXXXXXX)"
-ln -s "$TS_HELPER_SIGRECEIVE" "$HELPER_SYMLINK"
-trap "rm -f $HELPER_SYMLINK" 0
+HELPER_SYMLINK="$(mktemp "${TS_OUTDIR}/alXXXXXXXXXXXXX")"
+ln -sf "$TS_HELPER_SIGRECEIVE" "$HELPER_SYMLINK"
 
 "$HELPER_SYMLINK" -s "$TS_TESTUSER" >> "$TS_OUTPUT" 2>&1 &
 TEST_PID=$!
@@ -53,4 +52,6 @@ fi
 
 sed -i "s/${HELPER_SYMLINK##*/}/${TS_HELPER_SIGRECEIVE##*/}/" "$TS_OUTPUT"
 
+rm -f "$HELPER_SYMLINK"
+
 ts_finalize
diff --git a/tests/ts/kill/name_to_number b/tests/ts/kill/name_to_number
index a57ed852e..9a370bbcc 100755
--- a/tests/ts/kill/name_to_number
+++ b/tests/ts/kill/name_to_number
@@ -24,8 +24,9 @@ ts_check_test_command "$TS_HELPER_SIGRECEIVE"
 . "$TS_SELF/kill_functions.sh"
 
 all_ok=true
-HELPER_SYMLINK="$TS_OUTDIR/$(mktemp -u XXXXXXXXXXXXXXX)"
-ln -s "$TS_HELPER_SIGRECEIVE" "$HELPER_SYMLINK"
+
+HELPER_SYMLINK="$(mktemp "${TS_OUTDIR}/naXXXXXXXXXXXXX")"
+ln -sf "$TS_HELPER_SIGRECEIVE" "$HELPER_SYMLINK"
 
 for SIG in $($TS_CMD_KILL -L); do
 	if [ "x${SIG//[0-9]/}" = "x" ]; then
@@ -56,7 +57,7 @@ for SIG in $($TS_CMD_KILL -L); do
 done
 
 if $all_ok; then
-	echo 'all ok' >> $TS_OUTPUT
+	echo 'all ok' >> "$TS_OUTPUT"
 fi
 rm -f "$HELPER_SYMLINK"
 
diff --git a/tests/ts/kill/options b/tests/ts/kill/options
index 413037c21..6cdaa24d4 100755
--- a/tests/ts/kill/options
+++ b/tests/ts/kill/options
@@ -25,9 +25,8 @@ ts_check_test_command "$TS_HELPER_SIGRECEIVE"
 
 all_ok=true
 
-HELPER_SYMLINK="$TS_OUTDIR/$(mktemp -u XXXXXXXXXXXXXXX)"
-ln -s "$TS_HELPER_SIGRECEIVE" "$HELPER_SYMLINK"
-trap "rm -f $HELPER_SYMLINK" 0
+HELPER_SYMLINK="$(mktemp "${TS_OUTDIR}/opXXXXXXXXXXXXX")"
+ln -sf "$TS_HELPER_SIGRECEIVE" "$HELPER_SYMLINK"
 
 try_option()
 {
@@ -61,5 +60,6 @@ try_option -SIGHUP
 if $all_ok; then
 	echo 'all ok' >> "$TS_OUTPUT"
 fi
+rm -f "$HELPER_SYMLINK"
 
 ts_finalize
diff --git a/tests/ts/kill/print_pid b/tests/ts/kill/print_pid
index 4da8b4509..1b3052bb8 100755
--- a/tests/ts/kill/print_pid
+++ b/tests/ts/kill/print_pid
@@ -25,9 +25,8 @@ ts_check_test_command "$TS_HELPER_SIGRECEIVE"
 
 all_ok=true
 
-HELPER_SYMLINK="$TS_OUTDIR/$(mktemp -u XXXXXXXXXXXXXXX)"
-ln -s "$TS_HELPER_SIGRECEIVE" "$HELPER_SYMLINK"
-trap "rm -f $HELPER_SYMLINK" 0
+HELPER_SYMLINK="$(mktemp "${TS_OUTDIR}/prXXXXXXXXXXXXX")"
+ln -sf "$TS_HELPER_SIGRECEIVE" "$HELPER_SYMLINK"
 
 "$HELPER_SYMLINK" >> "$TS_OUTPUT" 2>&1 &
 TEST_PID=$!
@@ -54,5 +53,6 @@ fi
 if $all_ok; then
 	echo 'all ok' >> "$TS_OUTPUT"
 fi
+rm -f "$HELPER_SYMLINK"
 
 ts_finalize