From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/tools/testing/selftests/sysctl/sysctl.sh | 271 ++++++++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 231 insertions(+), 40 deletions(-)
diff --git a/kernel/tools/testing/selftests/sysctl/sysctl.sh b/kernel/tools/testing/selftests/sysctl/sysctl.sh
index 584eb8e..19515dc 100755
--- a/kernel/tools/testing/selftests/sysctl/sysctl.sh
+++ b/kernel/tools/testing/selftests/sysctl/sysctl.sh
@@ -24,29 +24,22 @@
# This represents
#
-# TEST_ID:TEST_COUNT:ENABLED
+# TEST_ID:TEST_COUNT:ENABLED:TARGET
#
# TEST_ID: is the test id number
# TEST_COUNT: number of times we should run the test
# ENABLED: 1 if enabled, 0 otherwise
+# TARGET: test target file required on the test_sysctl module
#
# Once these are enabled please leave them as-is. Write your own test,
# we have tons of space.
-ALL_TESTS="0001:1:1"
-ALL_TESTS="$ALL_TESTS 0002:1:1"
-ALL_TESTS="$ALL_TESTS 0003:1:1"
-ALL_TESTS="$ALL_TESTS 0004:1:1"
-ALL_TESTS="$ALL_TESTS 0005:3:1"
-
-test_modprobe()
-{
- if [ ! -d $DIR ]; then
- echo "$0: $DIR not present" >&2
- echo "You must have the following enabled in your kernel:" >&2
- cat $TEST_DIR/config >&2
- exit $ksft_skip
- fi
-}
+ALL_TESTS="0001:1:1:int_0001"
+ALL_TESTS="$ALL_TESTS 0002:1:1:string_0001"
+ALL_TESTS="$ALL_TESTS 0003:1:1:int_0002"
+ALL_TESTS="$ALL_TESTS 0004:1:1:uint_0001"
+ALL_TESTS="$ALL_TESTS 0005:3:1:int_0003"
+ALL_TESTS="$ALL_TESTS 0006:50:1:bitmap_0001"
+ALL_TESTS="$ALL_TESTS 0007:1:1:boot_int"
function allow_user_defaults()
{
@@ -120,13 +113,15 @@
function load_req_mod()
{
- if [ ! -d $DIR ]; then
+ if [ ! -d $SYSCTL ]; then
if ! modprobe -q -n $TEST_DRIVER; then
echo "$0: module $TEST_DRIVER not found [SKIP]"
+ echo "You must set CONFIG_TEST_SYSCTL=m in your kernel" >&2
exit $ksft_skip
fi
modprobe $TEST_DRIVER
if [ $? -ne 0 ]; then
+ echo "$0: modprobe $TEST_DRIVER failed."
exit
fi
fi
@@ -149,6 +144,9 @@
string_0001)
VAL="(none)"
;;
+ bitmap_0001)
+ VAL=""
+ ;;
*)
;;
esac
@@ -157,8 +155,10 @@
set_orig()
{
- if [ ! -z $TARGET ]; then
- echo "${ORIG}" > "${TARGET}"
+ if [ ! -z $TARGET ] && [ ! -z $ORIG ]; then
+ if [ -f ${TARGET} ]; then
+ echo "${ORIG}" > "${TARGET}"
+ fi
fi
}
@@ -177,9 +177,25 @@
return 0
}
+# proc files get read a page at a time, which can confuse diff,
+# and get you incorrect results on proc files with long data. To use
+# diff against them you must first extract the output to a file, and
+# then compare against that file.
+verify_diff_proc_file()
+{
+ TMP_DUMP_FILE=$(mktemp)
+ cat $1 > $TMP_DUMP_FILE
+
+ if ! diff -w -q $TMP_DUMP_FILE $2; then
+ return 1
+ else
+ return 0
+ fi
+}
+
verify_diff_w()
{
- echo "$TEST_STR" | diff -q -w -u - $1
+ echo "$TEST_STR" | diff -q -w -u - $1 > /dev/null
return $?
}
@@ -288,6 +304,58 @@
echo "ok"
fi
test_rc
+}
+
+check_failure()
+{
+ echo -n "Testing that $1 fails as expected..."
+ reset_vals
+ TEST_STR="$1"
+ orig="$(cat $TARGET)"
+ echo -n "$TEST_STR" > $TARGET 2> /dev/null
+
+ # write should fail and $TARGET should retain its original value
+ if [ $? = 0 ] || [ "$(cat $TARGET)" != "$orig" ]; then
+ echo "FAIL" >&2
+ rc=1
+ else
+ echo "ok"
+ fi
+ test_rc
+}
+
+run_wideint_tests()
+{
+ # sysctl conversion functions receive a boolean sign and ulong
+ # magnitude; here we list the magnitudes we want to test (each of
+ # which will be tested in both positive and negative forms). Since
+ # none of these values fit in 32 bits, writing them to an int- or
+ # uint-typed sysctl should fail.
+ local magnitudes=(
+ # common boundary-condition values (zero, +1, -1, INT_MIN,
+ # and INT_MAX respectively) if truncated to lower 32 bits
+ # (potential for being falsely deemed in range)
+ 0x0000000100000000
+ 0x0000000100000001
+ 0x00000001ffffffff
+ 0x0000000180000000
+ 0x000000017fffffff
+
+ # these look like negatives, but without a leading '-' are
+ # actually large positives (should be rejected as above
+ # despite being zero/+1/-1/INT_MIN/INT_MAX in the lower 32)
+ 0xffffffff00000000
+ 0xffffffff00000001
+ 0xffffffffffffffff
+ 0xffffffff80000000
+ 0xffffffff7fffffff
+ )
+
+ for sign in '' '-'; do
+ for mag in "${magnitudes[@]}"; do
+ check_failure "${sign}${mag}"
+ done
+ done
}
# Your test must accept digits 3 and 4 to use this
@@ -548,20 +616,82 @@
test_rc
}
+target_exists()
+{
+ TARGET="${SYSCTL}/$1"
+ TEST_ID="$2"
+
+ if [ ! -f ${TARGET} ] ; then
+ echo "Target for test $TEST_ID: $TARGET not exist, skipping test ..."
+ return 0
+ fi
+ return 1
+}
+
+run_bitmaptest() {
+ # Total length of bitmaps string to use, a bit under
+ # the maximum input size of the test node
+ LENGTH=$((RANDOM % 65000))
+
+ # First bit to set
+ BIT=$((RANDOM % 1024))
+
+ # String containing our list of bits to set
+ TEST_STR=$BIT
+
+ # build up the string
+ while [ "${#TEST_STR}" -le "$LENGTH" ]; do
+ # Make sure next entry is discontiguous,
+ # skip ahead at least 2
+ BIT=$((BIT + $((2 + RANDOM % 10))))
+
+ # Add new bit to the list
+ TEST_STR="${TEST_STR},${BIT}"
+
+ # Randomly make it a range
+ if [ "$((RANDOM % 2))" -eq "1" ]; then
+ RANGE_END=$((BIT + $((1 + RANDOM % 10))))
+ TEST_STR="${TEST_STR}-${RANGE_END}"
+ BIT=$RANGE_END
+ fi
+ done
+
+ echo -n "Checking bitmap handler... "
+ TEST_FILE=$(mktemp)
+ echo -n "$TEST_STR" > $TEST_FILE
+
+ cat $TEST_FILE > $TARGET 2> /dev/null
+ if [ $? -ne 0 ]; then
+ echo "FAIL" >&2
+ rc=1
+ test_rc
+ fi
+
+ if ! verify_diff_proc_file "$TARGET" "$TEST_FILE"; then
+ echo "FAIL" >&2
+ rc=1
+ else
+ echo "ok"
+ rc=0
+ fi
+ test_rc
+}
+
sysctl_test_0001()
{
- TARGET="${SYSCTL}/int_0001"
+ TARGET="${SYSCTL}/$(get_test_target 0001)"
reset_vals
ORIG=$(cat "${TARGET}")
TEST_STR=$(( $ORIG + 1 ))
run_numerictests
+ run_wideint_tests
run_limit_digit
}
sysctl_test_0002()
{
- TARGET="${SYSCTL}/string_0001"
+ TARGET="${SYSCTL}/$(get_test_target 0002)"
reset_vals
ORIG=$(cat "${TARGET}")
TEST_STR="Testing sysctl"
@@ -574,35 +704,85 @@
sysctl_test_0003()
{
- TARGET="${SYSCTL}/int_0002"
+ TARGET="${SYSCTL}/$(get_test_target 0003)"
reset_vals
ORIG=$(cat "${TARGET}")
TEST_STR=$(( $ORIG + 1 ))
run_numerictests
+ run_wideint_tests
run_limit_digit
run_limit_digit_int
}
sysctl_test_0004()
{
- TARGET="${SYSCTL}/uint_0001"
+ TARGET="${SYSCTL}/$(get_test_target 0004)"
reset_vals
ORIG=$(cat "${TARGET}")
TEST_STR=$(( $ORIG + 1 ))
run_numerictests
+ run_wideint_tests
run_limit_digit
run_limit_digit_uint
}
sysctl_test_0005()
{
- TARGET="${SYSCTL}/int_0003"
+ TARGET="${SYSCTL}/$(get_test_target 0005)"
reset_vals
ORIG=$(cat "${TARGET}")
run_limit_digit_int_array
+}
+
+sysctl_test_0006()
+{
+ TARGET="${SYSCTL}/bitmap_0001"
+ reset_vals
+ ORIG=""
+ run_bitmaptest
+}
+
+sysctl_test_0007()
+{
+ TARGET="${SYSCTL}/boot_int"
+ if [ ! -f $TARGET ]; then
+ echo "Skipping test for $TARGET as it is not present ..."
+ return $ksft_skip
+ fi
+
+ if [ -d $DIR ]; then
+ echo "Boot param test only possible sysctl_test is built-in, not module:"
+ cat $TEST_DIR/config >&2
+ return $ksft_skip
+ fi
+
+ echo -n "Testing if $TARGET is set to 1 ..."
+ ORIG=$(cat "${TARGET}")
+
+ if [ x$ORIG = "x1" ]; then
+ echo "ok"
+ return 0
+ fi
+ echo "FAIL"
+ echo "Checking if /proc/cmdline contains setting of the expected parameter ..."
+ if [ ! -f /proc/cmdline ]; then
+ echo "/proc/cmdline does not exist, test inconclusive"
+ return 0
+ fi
+
+ FOUND=$(grep -c "sysctl[./]debug[./]test_sysctl[./]boot_int=1" /proc/cmdline)
+ if [ $FOUND = "1" ]; then
+ echo "Kernel param found but $TARGET is not 1, TEST FAILED"
+ rc=1
+ test_rc
+ fi
+
+ echo "Skipping test, expected kernel parameter missing."
+ echo "To perform this test, make sure kernel is booted with parameter: sysctl.debug.test_sysctl.boot_int=1"
+ return $ksft_skip
}
list_tests()
@@ -618,9 +798,9 @@
echo "0003 x $(get_test_count 0003) - tests proc_dointvec()"
echo "0004 x $(get_test_count 0004) - tests proc_douintvec()"
echo "0005 x $(get_test_count 0005) - tests proc_douintvec() array"
+ echo "0006 x $(get_test_count 0006) - tests proc_do_large_bitmap()"
+ echo "0007 x $(get_test_count 0007) - tests setting sysctl from kernel boot param"
}
-
-test_reqs
usage()
{
@@ -669,25 +849,35 @@
{
test_num $1
TEST_DATA=$(echo $ALL_TESTS | awk '{print $'$1'}')
- LAST_TWO=${TEST_DATA#*:*}
- echo ${LAST_TWO%:*}
+ echo ${TEST_DATA} | awk -F":" '{print $2}'
}
function get_test_enabled()
{
test_num $1
TEST_DATA=$(echo $ALL_TESTS | awk '{print $'$1'}')
- echo ${TEST_DATA#*:*:}
+ echo ${TEST_DATA} | awk -F":" '{print $3}'
+}
+
+function get_test_target()
+{
+ test_num $1
+ TEST_DATA=$(echo $ALL_TESTS | awk '{print $'$1'}')
+ echo ${TEST_DATA} | awk -F":" '{print $4}'
}
function run_all_tests()
{
for i in $ALL_TESTS ; do
- TEST_ID=${i%:*:*}
+ TEST_ID=${i%:*:*:*}
ENABLED=$(get_test_enabled $TEST_ID)
TEST_COUNT=$(get_test_count $TEST_ID)
+ TEST_TARGET=$(get_test_target $TEST_ID)
+ if target_exists $TEST_TARGET $TEST_ID; then
+ continue
+ fi
if [[ $ENABLED -eq "1" ]]; then
- test_case $TEST_ID $TEST_COUNT
+ test_case $TEST_ID $TEST_COUNT $TEST_TARGET
fi
done
}
@@ -720,12 +910,14 @@
function test_case()
{
- NUM_TESTS=$DEFAULT_NUM_TESTS
- if [ $# -eq 2 ]; then
- NUM_TESTS=$2
- fi
+ NUM_TESTS=$2
i=0
+
+ if target_exists $3 $1; then
+ continue
+ fi
+
while [ $i -lt $NUM_TESTS ]; do
test_num $1
watch_log $i ${TEST_NAME}_test_$1 noclear
@@ -748,15 +940,15 @@
elif [[ "$1" = "-t" ]]; then
shift
test_num $1
- test_case $1 $(get_test_count $1)
+ test_case $1 $(get_test_count $1) $(get_test_target $1)
elif [[ "$1" = "-c" ]]; then
shift
test_num $1
test_num $2
- test_case $1 $2
+ test_case $1 $2 $(get_test_target $1)
elif [[ "$1" = "-s" ]]; then
shift
- test_case $1 1
+ test_case $1 1 $(get_test_target $1)
elif [[ "$1" = "-l" ]]; then
list_tests
elif [[ "$1" = "-h" || "$1" = "--help" ]]; then
@@ -770,7 +962,6 @@
test_reqs
allow_user_defaults
check_production_sysctl_writes_strict
-test_modprobe
load_req_mod
trap "test_finish" EXIT
--
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