selftest/sgx: Make cgroup test scripts ash compatible

Tested with busybox on Ubuntu.

Signed-off-by: Haitao Huang <haitao.huang@linux.intel.com>

tools/testing/selftests/sgx/run_epc_cg_selftests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+##!/usr/bin/env sh
 # SPDX-License-Identifier: GPL-2.0
 # Copyright(c) 2023 Intel Corporation.
 
@@ -53,29 +53,29 @@ timestamp=$(date +%Y%m%d_%H%M%S)
 test_cmd="./test_sgx -t unclobbered_vdso_oversubscribed"
 
 wait_check_process_status() {
-    local pid=$1
-    local check_for_success=$2  # If 1, check for success;
+    pid=$1
+    check_for_success=$2  # If 1, check for success;
                                 # If 0, check for failure
     wait "$pid"
-    local status=$?
+    status=$?
 
-    if [[ $check_for_success -eq 1 && $status -eq 0 ]]; then
+    if [ $check_for_success -eq 1 ] && [ $status -eq 0 ]; then
         echo "# Process $pid succeeded."
         return 0
-    elif [[ $check_for_success -eq 0 && $status -ne 0 ]]; then
+    elif [ $check_for_success -eq 0 ] && [ $status -ne 0 ]; then
         echo "# Process $pid returned failure."
         return 0
     fi
     return 1
 }
 
 wait_and_detect_for_any() {
-    local pids=("$@")
-    local check_for_success=$1  # If 1, check for success;
+    check_for_success=$1  # If 1, check for success;
                                 # If 0, check for failure
-    local detected=1 # 0 for success detection
+    shift
+    detected=1 # 0 for success detection
 
-    for pid in "${pids[@]:1}"; do
+    for pid in $@; do
         if wait_check_process_status "$pid" "$check_for_success"; then
             detected=0
             # Wait for other processes to exit
@@ -89,7 +89,7 @@ echo "# Start unclobbered_vdso_oversubscribed with SMALL limit, expecting failur
 # Always use leaf node of misc cgroups so it works for both v1 and v2
 # these may fail on OOM
 cgexec -g misc:$TEST_CG_SUB3 $test_cmd >cgtest_small_$timestamp.log 2>&1
-if [[ $? -eq 0 ]]; then
+if [ $? -eq 0 ]; then
     echo "# Fail on SMALL limit, not expecting any test passes."
     cgdelete -r -g misc:$TEST_ROOT_CG
     exit 1
@@ -102,16 +102,16 @@ echo "# PASSED SMALL limit."
 echo "# Start 4 concurrent unclobbered_vdso_oversubscribed tests with LARGE limit,
         expecting at least one success...."
 
-pids=()
-for i in {1..4}; do
+pids=""
+for i in 1 2 3 4; do
     (
         cgexec -g misc:$TEST_CG_SUB2 $test_cmd >cgtest_large_positive_$timestamp.$i.log 2>&1
     ) &
-    pids+=($!)
+    pids="$pids $!"
 done
 
 
-if wait_and_detect_for_any 1 "${pids[@]}"; then
+if wait_and_detect_for_any 1 "$pids"; then
     echo "# PASSED LARGE limit positive testing."
 else
     echo "# Failed on LARGE limit positive testing, no test passes."
@@ -121,15 +121,15 @@ fi
 
 echo "# Start 5 concurrent unclobbered_vdso_oversubscribed tests with LARGE limit,
         expecting at least one failure...."
-pids=()
-for i in {1..5}; do
+pids=""
+for i in 1 2 3 4 5; do
     (
         cgexec -g misc:$TEST_CG_SUB2 $test_cmd >cgtest_large_negative_$timestamp.$i.log 2>&1
     ) &
-    pids+=($!)
+    pids="$pids $!"
 done
 
-if wait_and_detect_for_any 0 "${pids[@]}"; then
+if wait_and_detect_for_any 0 "$pids"; then
     echo "# PASSED LARGE limit negative testing."
 else
     echo "# Failed on LARGE limit negative testing, no test fails."
@@ -139,15 +139,15 @@ fi
 
 echo "# Start 8 concurrent unclobbered_vdso_oversubscribed tests with LARGER limit,
         expecting no failure...."
-pids=()
-for i in {1..8}; do
+pids=""
+for i in 1 2 3 4 5 6 7 8; do
     (
         cgexec -g misc:$TEST_CG_SUB4 $test_cmd >cgtest_larger_$timestamp.$i.log 2>&1
     ) &
-    pids+=($!)
+    pids="$pids $!"
 done
 
-if wait_and_detect_for_any 0 "${pids[@]}"; then
+if wait_and_detect_for_any 0 "$pids"; then
     echo "# Failed on LARGER limit, at least one test fails."
     cgdelete -r -g misc:$TEST_ROOT_CG
     exit 1
@@ -157,36 +157,43 @@ fi
 
 echo "# Start 8 concurrent unclobbered_vdso_oversubscribed tests with LARGER limit,
       randomly kill one, expecting no failure...."
-pids=()
-for i in {1..8}; do
+pids=""
+for i in 1 2 3 4 5 6 7 8; do
     (
         cgexec -g misc:$TEST_CG_SUB4 $test_cmd >cgtest_larger_kill_$timestamp.$i.log 2>&1
     ) &
-    pids+=($!)
+    pids="$pids $!"
 done
-
-sleep $((RANDOM % 10 + 5))
+random_number=$(awk 'BEGIN{srand();print int(rand()*10)}')
+sleep $((random_number + 5))
 
 # Randomly select a PID to kill
-RANDOM_INDEX=$((RANDOM % 8))
-PID_TO_KILL=${pids[RANDOM_INDEX]}
+RANDOM_INDEX=$(awk 'BEGIN{srand();print int(rand()*8)}')
+counter=0
+for pid in $pids; do
+    if [ "$counter" -eq "$RANDOM_INDEX" ]; then
+        PID_TO_KILL=$pid
+        break
+    fi
+    counter=$((counter + 1))
+done
 
 kill $PID_TO_KILL
 echo "# Killed process with PID: $PID_TO_KILL"
 
 any_failure=0
-for pid in "${pids[@]}"; do
+for pid in $pids; do
     wait "$pid"
     status=$?
     if [ "$pid" != "$PID_TO_KILL" ]; then
-        if [[ $status -ne 0 ]]; then
+        if [ $status -ne 0 ]; then
 	    echo "# Process $pid returned failure."
             any_failure=1
         fi
     fi
 done
 
-if [[ $any_failure -ne 0 ]]; then
+if [ $any_failure -ne 0 ]; then
     echo "# Failed on random killing, at least one test fails."
     cgdelete -r -g misc:$TEST_ROOT_CG
     exit 1
@@ -201,7 +208,7 @@ if [ $? -ne 0 ]; then
 fi
 MEM_LIMIT_TOO_SMALL=$((CAPACITY - 2 * LARGE))
 
-if [[ $CG_V1 -eq 0 ]]; then
+if [ $CG_V1 -eq 0 ]; then
     echo "$MEM_LIMIT_TOO_SMALL" > $CG_MEM_ROOT/$TEST_CG_SUB2/memory.max
 else
     echo "$MEM_LIMIT_TOO_SMALL" > $CG_MEM_ROOT/$TEST_CG_SUB2/memory.limit_in_bytes
@@ -210,16 +217,16 @@ fi
 
 echo "# Start 4 concurrent unclobbered_vdso_oversubscribed tests with LARGE EPC limit,
         and too small RAM limit, expecting all failures...."
-pids=()
-for i in {1..4}; do
+pids=""
+for i in 1 2 3 4; do
     (
         cgexec -g memory:$TEST_CG_SUB2 -g misc:$TEST_CG_SUB2 $test_cmd \
                >cgtest_large_oom_$timestamp.$i.log 2>&1
     ) &
-    pids+=($!)
+    pids="$pids $!"
 done
 
-if wait_and_detect_for_any 1 "${pids[@]}"; then
+if wait_and_detect_for_any 1 "$pids"; then
     echo "# Failed on tests with memcontrol, some tests did not fail."
     cgdelete -r -g misc:$TEST_ROOT_CG
     if [[ $CG_V1 -ne 0 ]]; then
@@ -240,7 +247,7 @@ else
     echo "# PASSED ALL cgroup limit tests, cleanup cgroups..."
 fi
 cgdelete -r -g misc:$TEST_ROOT_CG
-if [[ $CG_V1 -ne 0 ]]; then
+if [ $CG_V1 -ne 0 ]; then
      cgdelete -r -g memory:$TEST_ROOT_CG
 fi
 echo "# done."

tools/testing/selftests/sgx/watch_misc_for_tests.sh

@@ -1,13 +1,10 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
+##!/usr/bin/env sh
+#!/bin/sh
 # Copyright(c) 2023 Intel Corporation.
 
-if [ -z "$1" ]
-  then
-    echo "No argument supplied, please provide 'max', 'current' or 'events'"
+if [ -z "$1" ]; then
+    echo "No argument supplied, please provide 'max', 'current', or 'events'"
     exit 1
 fi
 
-watch -n 1 "find /sys/fs/cgroup -wholename */test*/misc.$1 -exec sh -c \
-    'echo \"\$1:\"; cat \"\$1\"' _ {} \;"
-
+watch -n 1 'find /sys/fs/cgroup -wholename "*/test*/misc.'$1'" -exec sh -c '\''echo "$1:"; cat "$1"'\'' _ {} \;'