lustre/kernel_patches/scripts/p_diff

   1 #!/bin/sh
   2
   3 #
   4 # Bring up a patched file in diff.  We show the diffs
   5 # in the topmost patch, unless it was specified
   6 #
   7
   8 . patchfns >/dev/null || . /usr/lib/patch-scripts/patchfns >/dev/null || { \
   9         echo "Impossible to find my library 'patchfns'."
  10         echo "Check your install, or go to the right directory"
  11         exit 1
  12 }
  13
  14 usage()
  15 {
  16         echo "Usage: pdiff [patchname] filename"
  17         echo "       pdiff [patchname] -"
  18         exit 1
  19 }
  20
  21 if [ $# == 1 ]
  22 then
  23         PATCH_NAME=$(top_patch)
  24         FILENAME=$1
  25 elif [ $# == 2 ]
  26 then
  27         PATCH_NAME=$(stripit $1)
  28         FILENAME=$2
  29 else
  30         usage
  31 fi
  32
  33 if ! is_applied $PATCH_NAME
  34 then
  35         echo $PATCH_NAME is not applied
  36         exit 1
  37 fi
  38
  39 doit()
  40 {
  41         filename=$1
  42         unpatched_file=$filename"~"$PATCH_NAME
  43         need_file_there $filename
  44         if [ -e $unpatched_file ]
  45         then
  46                 diff -u $unpatched_file $filename
  47         else
  48                 echo pdiff: $filename appears to not be in $PATCH_NAME
  49         fi
  50 }
  51
  52 if [ x"$FILENAME" = "x-" ]
  53 then
  54         FILENAME=$(cat $P/pc/$PATCH_NAME.pc)
  55 fi
  56
  57 for i in $FILENAME
  58 do
  59         doit $i
  60 done