lustre/kernel_patches/prepare_tree.sh

   1 #!/bin/bash
   2
   3 die() {
   4         echo -e $* >&2
   5         echo aborting.. >&2
   6         exit 1
   7 }
   8
   9 canon() {
  10         cd $1
  11         CANON=$PWD
  12         cd -
  13 }
  14
  15 canon $(dirname $0)
  16 MYDIR=$CANON
  17
  18 while [ ${#*} -gt 1 ]; do
  19         case "$1" in
  20                 -t)
  21                         shift;
  22                         TREE=$1
  23                         ;;
  24                 -s)
  25                         shift;
  26                         SERIES=$1
  27                         ;;
  28                 *)
  29                         die "unknown argument $1"
  30                         break;
  31                         ;;
  32         esac
  33         shift;
  34 done
  35
  36 [ -z "$TREE" -o -z "$SERIES" ] && die "I need a tree and series:\n\t$0 -t kernel_dir -s series_name"
  37 [ ! -d $TREE ] && die "kernel tree '$TREE' isn't a directory"
  38 SERIES=$(basename $SERIES)
  39 [ ! -f $MYDIR/series/$SERIES ] && die "no series file '$SERIES'"
  40
  41 canon $TREE
  42 TREE=$CANON
  43
  44 # patch scripts wants a relative path from the linux tree to
  45 # its patch pile :(
  46
  47 MY=$(echo $MYDIR | sed -e 's_^/__')
  48 TR=$(echo $TREE | sed -e 's_^/__')
  49
  50 while true ; do
  51         M=$(echo $MY | cut -d/ -f 1)
  52         T=$(echo $TR | cut -d/ -f 1)
  53
  54         if [ $M != $T ]; then
  55                 break;
  56         fi
  57
  58         MY=$(echo $MY | cut -d/ -f 2-)
  59         TR=$(echo $TR | cut -d/ -f 2-)
  60 done
  61
  62 [ $MY == $MYDIR ] && die "bad! $MY == $MYDIR"
  63
  64 REVERSE=$(revpath $TR)${MY}
  65 ABSINO=$(stat $MYDIR | awk '($3 == "Inode:") {print $4}')
  66 REVINO=`(cd $TREE ; stat $REVERSE | awk '($3 == "Inode:") {print $4}')`
  67
  68 [ $ABSINO != $REVINO ] && die "inodes differ, my reverse path is bad?"
  69
  70 echo export PATCHSCRIPTS_LIBDIR=$REVERSE
  71
  72 cd $TREE
  73 ln -sf $REVERSE/series/$SERIES series
  74
  75 PATH_ELEMENTS=$(echo $PATH | sed -e 's/:/ /g')
  76
  77 NEW_PATH=$MYDIR/scripts
  78
  79 for p in $PATH_ELEMENTS; do
  80         if echo $p | grep kernel_patches/scripts > /dev/null 2>&1 ; then
  81                 continue;
  82         fi
  83         NEW_PATH="$NEW_PATH:$p"
  84 done
  85
  86 echo export PATH=$NEW_PATH
  87
  88 echo "'$TREE' successfully setup" >&2