commands/update_bootcfg/update_bootcfg.sh

   1 #!/bin/sh
   2 set -e
   3
   4 ROOT=`printroot -r`
   5 DEFAULTCFG=/etc/boot.cfg.default
   6 LOCALCFG=/etc/boot.cfg.local
   7 TMP=/boot.cfg.temp
   8 DIRSBASE=/boot/minix
   9
  10 filter_missing_entries()
  11 {
  12         while read line
  13         do
  14                 if ! echo "$line" | grep -s -q 'multiboot'
  15                 then
  16                         echo "$line"
  17                         continue
  18                 fi
  19
  20                 # Check if kernel presents
  21                 kernel=`echo "$line" | sed -n 's/.*multiboot[[:space:]]*\(\/[^[:space:]]*\).*/\1/p'`
  22                 if [ ! -r "$kernel" ]
  23                 then
  24                         echo "Warning: config contains entry for \"$kernel\" which is missing! Entry skipped." 1>&2
  25                 else
  26                         echo "$line"
  27                 fi
  28         done
  29 }
  30
  31 if [ ! -b "$ROOT" ]
  32 then
  33         echo root device $ROOT not found
  34         exit 1
  35 fi
  36
  37 rootdevname=`echo $ROOT | sed 's/\/dev\///'`
  38
  39 if [ -r $DEFAULTCFG ]
  40 then
  41         default_cfg=`cat $DEFAULTCFG`
  42         # Substitute variables like $rootdevname
  43         echo "$default_cfg" | while read line; do eval echo \"$line\" | filter_missing_entries >> $TMP; done
  44 fi
  45
  46 if [ -e /boot/minix_latest -a -d /boot/minix_latest -o -h /boot/minix_latest ]
  47 then
  48         latest=`basename \`stat -f "%Y" /boot/minix_latest\``
  49 fi
  50
  51 [ -d $DIRSBASE ] && for i in `ls $DIRSBASE/`
  52 do
  53         build_name="`basename $i`"
  54         if [ "$build_name" != "$latest" ]
  55         then
  56                 echo "menu=Start MINIX 3 ($build_name):load_mods $DIRSBASE/$i/mod*;multiboot $DIRSBASE/$i/kernel rootdevname=$rootdevname" >> /$TMP
  57         fi
  58 done
  59
  60 [ -r $LOCALCFG ] && cat $LOCALCFG | filter_missing_entries >> $TMP
  61
  62 mv $TMP /boot.cfg
  63
  64 sync