IMG/cpio/ventoy/ventoy_chain.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     # rhel5/CentOS5 and all other distributions based on them
  51     if $GREP -q 'el5' /proc/version; then
  52         echo 'rhel5'; return
  53
  54     # rhel6/CentOS6 and all other distributions based on them
  55     elif $GREP -q 'el6' /proc/version; then
  56         echo 'rhel6'; return
  57
  58     # rhel7/CentOS7/rhel8/CentOS8 and all other distributions based on them
  59     elif $GREP -q 'el[78]' /proc/version; then
  60         echo 'rhel7'; return
  61
  62     # Maybe rhel9 rhel1x use the same way? Who knows!
  63     elif $EGREP -q 'el9|el1[0-9]' /proc/version; then
  64         echo 'rhel7'; return
  65
  66     # Fedora : do the same process with rhel7
  67     elif $GREP -q '\.fc[0-9][0-9]\.' /proc/version; then
  68         echo 'rhel7'; return
  69
  70     # Debian :
  71     elif $GREP -q '[Dd]ebian' /proc/version; then
  72         echo 'debian'; return
  73
  74     # Ubuntu : do the same process with debian
  75     elif $GREP -q '[Uu]buntu' /proc/version; then
  76         echo 'debian'; return
  77
  78     # Deepin : do the same process with debian
  79     elif $GREP -q '[Dd]eepin' /proc/version; then
  80         echo 'debian'; return
  81
  82     # SUSE
  83     elif $GREP -q 'SUSE' /proc/version; then
  84         echo 'suse'; return
  85
  86     # ArchLinux
  87     elif $EGREP -q 'archlinux|ARCH' /proc/version; then
  88         echo 'arch'; return
  89
  90     # kiosk
  91     elif $EGREP -q 'kiosk' /proc/version; then
  92         echo 'kiosk'; return
  93
  94     # gentoo
  95     elif $EGREP -q '[Gg]entoo' /proc/version; then
  96         echo 'gentoo'; return
  97
  98     # TinyCore
  99     elif $EGREP -q 'tinycore' /proc/version; then
 100         echo 'tinycore'; return
 101
 102     # manjaro
 103     elif $EGREP -q 'manjaro|MANJARO' /proc/version; then
 104         echo 'manjaro'; return
 105
 106     # mageia
 107     elif $EGREP -q 'mageia' /proc/version; then
 108         echo 'mageia'; return
 109
 110     # pclinux OS
 111     elif $GREP -i -q 'PCLinuxOS' /proc/version; then
 112         echo 'pclos'; return
 113
 114     # KaOS
 115     elif $GREP -i -q 'kaos' /proc/version; then
 116         echo 'kaos'; return
 117
 118     # Alpine
 119     elif $GREP -q 'Alpine' /proc/version; then
 120         echo 'alpine'; return
 121
 122     # NixOS
 123     elif $GREP -i -q 'NixOS' /proc/version; then
 124         echo 'nixos'; return
 125
 126     fi
 127
 128     if [ -e /lib/debian-installer ]; then
 129         echo 'debian'; return
 130     fi
 131
 132     if [ -e /etc/os-release ]; then
 133         if $GREP -q 'XenServer' /etc/os-release; then
 134             echo 'xen'; return
 135         elif $GREP -q 'SUSE ' /etc/os-release; then
 136             echo 'suse'; return
 137         elif $GREP -q 'uruk' /etc/os-release; then
 138             echo 'debian'; return
 139         elif $GREP -q 'Solus' /etc/os-release; then
 140             echo 'rhel7'; return
 141         fi
 142     fi
 143
 144     if $BUSYBOX_PATH/dmesg | $GREP -q -m1 "Xen:"; then
 145         echo 'xen'; return
 146     fi
 147
 148
 149     if [ -e /etc/HOSTNAME ] && $GREP -i -q 'slackware' /etc/HOSTNAME; then
 150         echo 'slackware'; return
 151     fi
 152
 153     if [ -e /init ]; then
 154         if $GREP -i -q zeroshell /init; then
 155             echo 'zeroshell'; return
 156         fi
 157     fi
 158
 159     if $EGREP -q 'ALT ' /proc/version; then
 160         echo 'alt'; return
 161     fi
 162
 163     if $EGREP -q 'porteus' /proc/version; then
 164         echo 'debian'; return
 165     fi
 166
 167     if $GREP -q 'Clear Linux ' /proc/version; then
 168         echo 'clear'; return
 169     fi
 170
 171     if $GREP -q 'artix' /proc/version; then
 172         echo 'arch'; return
 173     fi
 174
 175     if $GREP -q 'berry ' /proc/version; then
 176         echo 'berry'; return
 177     fi
 178
 179     if $GREP -q 'Gobo ' /proc/version; then
 180         echo 'gobo'; return
 181     fi
 182
 183     if $GREP -q 'NuTyX' /proc/version; then
 184         echo 'nutyx'; return
 185     fi
 186
 187     if [ -d /gnu ]; then
 188         vtLineNum=$($FIND /gnu/ -name guix | $BUSYBOX_PATH/wc -l)
 189         if [ $vtLineNum -gt 0 ]; then
 190             echo 'guix'; return
 191         fi
 192     fi
 193
 194     if $GREP -q 'android.x86' /proc/version; then
 195         echo 'android'; return
 196     fi
 197
 198     if $GREP -q 'adelielinux' /proc/version; then
 199         echo 'adelie'; return
 200     fi
 201
 202     if $GREP -q 'pmagic' /proc/version; then
 203         echo 'pmagic'; return
 204     fi
 205
 206     if $GREP -q 'CDlinux' /proc/cmdline; then
 207         echo 'cdlinux'; return
 208     fi
 209
 210     if $GREP -q 'parabola' /proc/version; then
 211         echo 'parabola'; return
 212     fi
 213
 214     if $GREP -q 'cucumber' /proc/version; then
 215         echo 'cucumber'; return
 216     fi
 217
 218     if $GREP -q 'fatdog' /proc/version; then
 219         echo 'fatdog'; return
 220     fi
 221
 222     if $GREP -q 'KWORT' /proc/version; then
 223         echo 'kwort'; return
 224     fi
 225
 226     if $GREP -q 'iwamoto' /proc/version; then
 227         echo 'vine'; return
 228     fi
 229
 230     if $GREP -q 'hyperbola' /proc/cmdline; then
 231         echo 'hyperbola'; return
 232     fi
 233
 234     echo "default"
 235 }
 236
 237 VTOS=$(ventoy_get_os_type)
 238 echo "OS=###${VTOS}###" >>$VTLOG
 239 if [ -e "$VTOY_PATH/hook/$VTOS/ventoy-hook.sh" ]; then
 240     $BUSYBOX_PATH/sh "$VTOY_PATH/hook/$VTOS/ventoy-hook.sh"
 241 fi
 242
 243
 244 ####################################################################
 245 #                                                                  #
 246 # Step 3 : Check for debug break                                   #
 247 #                                                                  #
 248 ####################################################################
 249 if [ "$VTOY_BREAK_LEVEL" = "03" ] || [ "$VTOY_BREAK_LEVEL" = "13" ]; then
 250     $SLEEP 5
 251     echo -e "\n\n\033[32m ################################################# \033[0m"
 252     echo -e "\033[32m ################ VENTOY DEBUG ################### \033[0m"
 253     echo -e "\033[32m ################################################# \033[0m \n"
 254     if [ "$VTOY_BREAK_LEVEL" = "13" ]; then
 255         $CAT $VTOY_PATH/log
 256     fi
 257     exec $BUSYBOX_PATH/sh
 258 fi
 259
 260
 261 ####################################################################
 262 #                                                                  #
 263 # Step 4 : Hand over to real init                                  #
 264 #                                                                  #
 265 ####################################################################
 266 $BUSYBOX_PATH/umount /proc
 267 if [ "$rmproc" = "Y" ]; then
 268     $BUSYBOX_PATH/rm -rf /proc
 269 fi
 270
 271 if [ -f $VTOY_PATH/ventoy_persistent_map ]; then
 272     export PERSISTENT='YES'
 273     export PERSISTENCE='true'
 274 fi
 275
 276 cd /
 277
 278 unset VTLOG FIND GREP EGREP CAT AWK SED SLEEP HEAD
 279
 280 for vtinit in $user_rdinit /init /sbin/init /linuxrc; do
 281     if [ -d /ventoy_rdroot ]; then
 282         if [ -e "/ventoy_rdroot$vtinit" ]; then
 283             # switch_root will check /init file, this is a cheat code
 284             echo 'switch_root' > /init
 285             exec $BUSYBOX_PATH/switch_root /ventoy_rdroot "$vtinit"
 286         fi
 287     else
 288         if [ -e "$vtinit" ];then
 289             if [ -f "$VTOY_PATH/hook/$VTOS/ventoy-before-init.sh" ]; then
 290                 $BUSYBOX_PATH/sh "$VTOY_PATH/hook/$VTOS/ventoy-before-init.sh"
 291             fi
 292             exec "$vtinit"
 293         fi
 294     fi
 295 done
 296
 297 # Should never reach here
 298 echo -e "\n\n\033[31m ############ INIT NOT FOUND ############### \033[0m \n"
 299 exec $BUSYBOX_PATH/sh