lustre/kernel_patches/scripts/patchfns

   1 DB=applied-patches
   2
   3 #
   4 # Work out where the user's pc/, patch/ and txt/ directories live.
   5 #
   6 # If the user specified PATCHSCRIPTS in environment then use that (it's
   7 # probably a relative path)
   8 #
   9 # If there is a directory ./patch-scripts then use that
  10 #
  11 # Otherwise use "."
  12 #
  13
  14 if [ x$PATCHSCRIPTS != x ]
  15 then
  16         P=$PATCHSCRIPTS
  17 elif [ -d ./patch-scripts ]
  18 then
  19         P=./patch-scripts
  20 elif [ -d ./patches ]
  21 then
  22         P=.
  23 else
  24         echo "could not locate your pc/ and patches/ directories"
  25         exit 1
  26 fi
  27
  28 top_patch()
  29 {
  30         tail -1 $DB
  31 }
  32
  33 die()
  34 {
  35         echo error: $*
  36         exit 1
  37 }
  38
  39 is_numeric()
  40 {
  41         if echo $1 | egrep '^[0-9]*$' > /dev/null
  42         then
  43                 return 0
  44         fi
  45         return 1
  46 }
  47
  48 is_applied_last()
  49 {
  50         name="$(stripit $1)"
  51         top_patch >$DB.1
  52         if grep "^$name$" "$DB.1" > /dev/null 2>&1
  53         then
  54                 rm $DB.1
  55                 return 0
  56         else
  57                 rm $DB.1
  58                 return 1
  59         fi
  60 }
  61
  62 is_applied()
  63 {
  64         name=$(stripit "$1")
  65         if grep "^$name$" "$DB" > /dev/null 2>&1
  66         then
  67                 return 0
  68         else
  69                 return 1
  70         fi
  71 }
  72
  73 can_apply()
  74 {
  75         if patch -p1 --dry-run -i "$1" -f
  76         then
  77                 return 0
  78         else
  79                 return 1
  80         fi
  81 }
  82
  83 can_remove()
  84 {
  85         if patch -R -p1 --dry-run -i $P/patches/"$1".patch -f
  86         then
  87                 return 0
  88         else
  89                 return 1
  90         fi
  91 }
  92
  93 remove_from_db()
  94 {
  95         tmpfile=$(mktemp /tmp/p_XXXXXX)
  96         name="$1"
  97         sed -e "/^$name$/d" < "$DB" > $tmpfile
  98         mv $tmpfile "$DB"
  99 }
 100
 101 stripit()
 102 {
 103         ret=$(basename $1)
 104         ret=$(echo $ret | sed -e 's/\.patch$//')
 105         ret=$(echo $ret | sed -e 's/\.pc$//')
 106         ret=$(echo $ret | sed -e 's/\.txt$//')
 107         echo $ret
 108 }
 109
 110 top_is_current()
 111 {
 112         patch_name=$(top_patch)
 113         if [ x$patch_name == x ]
 114         then
 115                 return 1
 116         else
 117                 patch_file=$P/patches/"$patch_name".patch
 118                 files=$(cat $P/pc/$patch_name.pc)
 119                 for file in $files
 120                 do
 121                         if [ $file -nt $patch_file ]
 122                         then
 123                                 echo $file newer than $patch_file
 124                                 return 0
 125                         fi
 126                 done
 127         fi
 128         return 1
 129 }
 130
 131 need_top_current()
 132 {
 133         if top_is_current
 134         then
 135                 echo "Error: Top patch is not up-to-date"
 136                 exit 1
 137         fi
 138 }
 139
 140 warn_top_current()
 141 {
 142         if top_is_current
 143         then
 144                 echo "Warning: Top patch is not up-to-date"
 145         fi
 146 }
 147
 148 file_in_patch()
 149 {
 150         file=$1
 151         patch=$2
 152
 153         if [ -e $P/pc/$patch.pc ]
 154         then
 155                 if grep "^"$file"$" $P/pc/$patch.pc > /dev/null
 156                 then
 157                         return 0
 158                 fi
 159         fi
 160         return 1
 161 }
 162
 163 # copy_file_to_bup filename patchname
 164 copy_file_to_bup()
 165 {
 166         file=$1
 167         patch=$2
 168         bup="$file"~"$patch"
 169
 170         if [ -e $bup ]
 171         then
 172                 echo "Cannot install file $file in patch $patch: backup $bup exists"
 173                 exit 1
 174         fi
 175
 176         if [ -e $file ]
 177         then
 178                 cp $file "$file"~"$patch"
 179         else
 180                 echo "file $file appears to be newly added"
 181         fi
 182 }
 183
 184 install_file_in_patch()
 185 {
 186         file=$1
 187         patch=$2
 188
 189         copy_file_to_bup $file $patch
 190         echo $file >> $P/pc/$patch.pc
 191 #       touch $P/txt/$patch.txt
 192 }
 193
 194 need_file_there()
 195 {
 196         if [ ! -e $1 ]
 197         then
 198                 echo "File $1 does not exist"
 199                 exit 1
 200         fi
 201 }
 202
 203 desc()
 204 {
 205         state=0
 206         while read x
 207         do
 208                 if [ x"$x" = xDESC ]
 209                 then
 210                         state=1
 211                 elif [ x"$x" = xEDESC ]
 212                 then
 213                         state=0
 214                 elif [ $state = 1 ]
 215                 then
 216                         echo "  $x"
 217                 fi
 218         done
 219 }
 220
 221 body()
 222 {
 223         file=$1
 224
 225         did_stuff=0
 226         while read x
 227         do
 228                 if [ x"$x" = xEDESC ]
 229                 then
 230                         cat
 231                         did_stuff=1
 232                 fi
 233         done < $file
 234
 235         if [ $did_stuff = 0 ]
 236         then
 237                 cat $file
 238         fi
 239 }