IMG/cpio/ventoy/ventoy_loop.sh

   1 #!/ventoy/busybox/sh
   2 #************************************************************************************
   3 # Copyright (c) 2020, longpanda <admin@ventoy.net>
   4 #
   5 # This program is free software; you can redistribute it and/or
   6 # modify it under the terms of the GNU General Public License as
   7 # published by the Free Software Foundation; either version 3 of the
   8 # License, or (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 # General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; if not, see <http://www.gnu.org/licenses/>.
  17 #
  18 #************************************************************************************
  19
  20 ####################################################################
  21 #                                                                  #
  22 # Step 1 : Parse kernel parameter                                  #
  23 #                                                                  #
  24 ####################################################################
  25 if ! [ -e /proc ]; then
  26     $BUSYBOX_PATH/mkdir /proc
  27     rmproc='Y'
  28 fi
  29 $BUSYBOX_PATH/mount -t proc proc /proc
  30
  31 # vtinit=xxx to replace rdinit=xxx
  32 vtcmdline=$($CAT /proc/cmdline)
  33 for i in $vtcmdline; do
  34     if echo $i | $GREP -q vtinit; then
  35         user_rdinit=${i#vtinit=}
  36         echo "user set user_rdinit=${user_rdinit}" >>$VTLOG
  37     fi
  38 done
  39
  40
  41 ####################################################################
  42 #                                                                  #
  43 # Step 2 : Do OS specific hook                                     #
  44 #                                                                  #
  45 ####################################################################
  46 ventoy_get_os_type() {
  47     echo "kernel version" >> $VTLOG
  48     $CAT /proc/version >> $VTLOG
  49
  50     # deepin-live
  51     if $GREP -q 'deepin' /proc/version; then
  52         echo 'deepin'; return
  53     fi
  54
  55     if $GREP -q 'endless' /proc/version; then
  56         echo 'endless'; return
  57     fi
  58
  59     echo "default"
  60 }
  61
  62 VTOS=$(ventoy_get_os_type)
  63 echo "OS=###${VTOS}###" >>$VTLOG
  64 if [ -e "$VTOY_PATH/loop/$VTOS/ventoy-hook.sh" ]; then
  65     $BUSYBOX_PATH/sh "$VTOY_PATH/loop/$VTOS/ventoy-hook.sh"
  66 fi
  67
  68
  69 ####################################################################
  70 #                                                                  #
  71 # Step 3 : Check for debug break                                   #
  72 #                                                                  #
  73 ####################################################################
  74 if [ "$VTOY_BREAK_LEVEL" = "03" ] || [ "$VTOY_BREAK_LEVEL" = "13" ]; then
  75     $SLEEP 5
  76     echo -e "\n\n\033[32m ################################################# \033[0m"
  77     echo -e "\033[32m ################ VENTOY DEBUG ################### \033[0m"
  78     echo -e "\033[32m ################################################# \033[0m \n"
  79     if [ "$VTOY_BREAK_LEVEL" = "13" ]; then
  80         $CAT $VTOY_PATH/log
  81     fi
  82     exec $BUSYBOX_PATH/sh
  83 fi
  84
  85
  86 ####################################################################
  87 #                                                                  #
  88 # Step 3 : Hand over to real init                                  #
  89 #                                                                  #
  90 ####################################################################
  91 $BUSYBOX_PATH/umount /proc
  92 if [ "$rmproc" = "Y" ]; then
  93     $BUSYBOX_PATH/rm -rf /proc
  94 fi
  95
  96 cd /
  97
  98 unset VTLOG FIND GREP EGREP CAT AWK SED SLEEP HEAD
  99
 100 for vtinit in $user_rdinit /sbin/init /init /linuxrc; do
 101     if [ -d /ventoy_rdroot ]; then
 102         if [ -e "/ventoy_rdroot$vtinit" ]; then
 103             # switch_root will check /init file, this is a cheat code
 104             echo 'switch_root' > /init
 105             exec $BUSYBOX_PATH/switch_root /ventoy_rdroot "$vtinit"
 106         fi
 107     else
 108         if [ -e "$vtinit" ];then
 109             exec "$vtinit"
 110         fi
 111     fi
 112 done
 113
 114 # Should never reach here
 115 echo -e "\n\n\033[31m ############ INIT NOT FOUND ############### \033[0m \n"
 116 exec $BUSYBOX_PATH/sh