-ventoy_need_dm_patch() {
- if [ "$VTOY_LINUX_REMOUNT" != "01" ]; then
- $BUSYBOX_PATH/false; return
- fi
-
- if $GREP -q 'device-mapper' /proc/devices; then
- :
- else
- $BUSYBOX_PATH/false; return
- fi
-
- if $GREP -q 'dm_patch' /proc/modules; then
- $BUSYBOX_PATH/false; return
- fi
-
- vtMajorVer=$($BUSYBOX_PATH/uname -r | $AWK -F. '{print $1}')
- vtMinorVer=$($BUSYBOX_PATH/uname -r | $AWK -F. '{print $2}')
-
- if [ $vtMajorVer -lt 3 ]; then
- $BUSYBOX_PATH/false; return
- elif [ $vtMajorVer -eq 3 -a $vtMinorVer -lt 10 ]; then
- $BUSYBOX_PATH/false; return
- fi
-
-
- $BUSYBOX_PATH/true
-}
-
-ventoy_dm_patch() {
- vtMType=$($BUSYBOX_PATH/uname -m)
-
- vtlog "######### ventoy_dm_patch ############"
-
- if echo $vtMType | $EGREP -i -q "x86.64|amd64"; then
- vtKoName=dm_patch_64.ko
- elif echo $vtMType | $EGREP -i -q "i[3-6]86"; then
- vtKoName=dm_patch_32.ko
- else
- vtlog "unsupported machine type $vtMType"
- return
- fi
-
- if [ -f $VTOY_PATH/tool/$vtKoName ]; then
- vtlog "/ventoy/tool/$vtKoName exist OK"
- else
- vtlog "/ventoy/tool/$vtKoName NOT exist"
- return
- fi
-
- $CAT /proc/kallsyms | $BUSYBOX_PATH/sort > $VTOY_PATH/kallsyms
-
- vtLine=$($VTOY_PATH/tool/vtoyksym dm_get_table_device $VTOY_PATH/kallsyms)
- get_addr=$(echo $vtLine | $AWK '{print $1}')
- get_size=$(echo $vtLine | $AWK '{print $2}')
-
- vtLine=$($VTOY_PATH/tool/vtoyksym dm_put_table_device $VTOY_PATH/kallsyms)
- put_addr=$(echo $vtLine | $AWK '{print $1}')
- put_size=$(echo $vtLine | $AWK '{print $2}')
-
- ro_addr=$($GREP ' set_memory_ro$' /proc/kallsyms | $AWK '{print $1}')
- rw_addr=$($GREP ' set_memory_rw$' /proc/kallsyms | $AWK '{print $1}')
- kprobe_reg_addr=$($GREP ' register_kprobe$' /proc/kallsyms | $AWK '{print $1}')
- kprobe_unreg_addr=$($GREP ' unregister_kprobe$' /proc/kallsyms | $AWK '{print $1}')
-
- if [ "$VTOY_DEBUG_LEVEL" = "01" ]; then
- printk_addr=$($GREP ' printk$' /proc/kallsyms | $AWK '{print $1}')
- vtDebug="-v"
- else
- printk_addr=0
- fi
-
- #printk_addr=$($GREP ' printk$' /proc/kallsyms | $AWK '{print $1}')
- #vtDebug="-v"
-
- vtlog get_addr=$get_addr get_size=$get_size
- vtlog put_addr=$put_addr put_size=$put_size
- vtlog kprobe_reg_addr=$kprobe_reg_addr kprobe_unreg_addr=$kprobe_unreg_addr
- vtlog ro_addr=$ro_addr rw_addr=$rw_addr printk_addr=$printk_addr
-
- if [ "$get_addr" = "0" -o "$put_addr" = "0" ]; then
- vtlog "Invalid symbol address"
- return
- fi
- if [ "$ro_addr" = "0" -o "$rw_addr" = "0" ]; then
- vtlog "Invalid symbol address"
- return
- fi
-
-
- vtKv=$($BUSYBOX_PATH/uname -r)
-
- if [ ! -d /lib/modules/$vtKv ]; then
- vtlog "No modules directory found"
- return
- elif [ -d /lib/modules/$vtKv/kernel/fs ]; then
- vtModPath=$($FIND /lib/modules/$vtKv/kernel/fs/ -name "*.ko*" | $HEAD -n1)
- else
- vtModPath=$($FIND /lib/modules/$vtKv/kernel/ -name "xfs.ko*" | $HEAD -n1)
- fi
-
- if [ -z "$vtModPath" ]; then
- vtModPath=$($FIND /lib/modules/$vtKv/kernel/ -name "*.ko*" | $HEAD -n1)
- fi
-
- vtModName=$($BUSYBOX_PATH/basename $vtModPath)
-
- vtlog "template module is $vtModPath $vtModName"
-
- if [ -z "$vtModPath" ]; then
- vtlog "No template module found"
- return
- elif echo $vtModPath | $GREP -q "[.]ko$"; then
- $BUSYBOX_PATH/cp -a $vtModPath $VTOY_PATH/$vtModName
- elif echo $vtModPath | $GREP -q "[.]ko[.]xz$"; then
- $BUSYBOX_PATH/xzcat $vtModPath > $VTOY_PATH/$vtModName
- elif echo $vtModPath | $GREP -q "[.]ko[.]gz$"; then
- $BUSYBOX_PATH/zcat $vtModPath > $VTOY_PATH/$vtModName
- else
- vtlog "unsupport module type"
- return
- fi
-
- #step1: modify vermagic/mod crc/relocation
- $VTOY_PATH/tool/vtoykmod -u $VTOY_PATH/tool/$vtKoName $VTOY_PATH/$vtModName $vtDebug
-
- #step2: fill parameters
- vtPgsize=$($VTOY_PATH/tool/vtoyksym -p)
- $VTOY_PATH/tool/vtoykmod -f $VTOY_PATH/tool/$vtKoName $vtPgsize 0x$printk_addr 0x$ro_addr 0x$rw_addr $get_addr $get_size $put_addr $put_size 0x$kprobe_reg_addr 0x$kprobe_unreg_addr $vtDebug
-
- $BUSYBOX_PATH/insmod $VTOY_PATH/tool/$vtKoName
-
- if $GREP -q 'dm_patch' /proc/modules; then
- echo "done" > $VTOY_PATH/dm_patch_done
- fi
-
-}