copy-firmware.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Copy firmware files based on WHENCE list
   5 #
   6
   7 verbose=:
   8 prune=no
   9 # shellcheck disable=SC2209
  10 compress=cat
  11 compext=
  12
  13 while test $# -gt 0; do
  14     case $1 in
  15         -v | --verbose)
  16             # shellcheck disable=SC2209
  17             verbose=echo
  18             shift
  19             ;;
  20
  21         -P | --prune)
  22             prune=yes
  23             shift
  24             ;;
  25
  26         --xz)
  27             if test "$compext" = ".zst"; then
  28                 echo "ERROR: cannot mix XZ and ZSTD compression"
  29                 exit 1
  30             fi
  31             compress="xz --compress --quiet --stdout --check=crc32"
  32             compext=".xz"
  33             shift
  34             ;;
  35
  36         --zstd)
  37             if test "$compext" = ".xz"; then
  38                 echo "ERROR: cannot mix XZ and ZSTD compression"
  39                 exit 1
  40             fi
  41             # shellcheck disable=SC2209
  42             compress="zstd --compress --quiet --stdout"
  43             compext=".zst"
  44             shift
  45             ;;
  46
  47         -*)
  48             if test "$compress" = "cat"; then
  49                 echo "ERROR: unknown command-line option: $1"
  50                 exit 1
  51             fi
  52             compress="$compress $1"
  53             shift
  54             ;;
  55         *)
  56             if test "x$destdir" != "x"; then
  57                 echo "ERROR: unknown command-line options: $*"
  58                 exit 1
  59             fi
  60
  61             destdir="$1"
  62             shift
  63             ;;
  64     esac
  65 done
  66
  67 # shellcheck disable=SC2162 # file/folder name can include escaped symbols
  68 grep -E '^(RawFile|File):' WHENCE | sed -E -e 's/^(RawFile|File): */\1 /;s/"//g' | while read k f; do
  69     test -f "$f" || continue
  70     install -d "$destdir/$(dirname "$f")"
  71     $verbose "copying/compressing file $f$compext"
  72     if test "$compress" != "cat" && test "$k" = "RawFile"; then
  73         $verbose "compression will be skipped for file $f"
  74         cat "$f" > "$destdir/$f"
  75     else
  76         $compress "$f" > "$destdir/$f$compext"
  77     fi
  78 done
  79
  80 $verbose "Finding duplicate files"
  81 rdfind -makesymlinks true -makeresultsfile false "$destdir" >/dev/null
  82 find "$destdir" -type l | while read -r l; do
  83         target="$(realpath "$l")"
  84         $verbose "Correcting path for $l"
  85         ln -fs "$(realpath --relative-to="$(dirname "$(realpath -s "$l")")" "$target")" "$l"
  86 done
  87
  88 # shellcheck disable=SC2162 # file/folder name can include escaped symbols
  89 grep -E '^Link:' WHENCE | sed -e 's/^Link: *//g;s/-> //g' | while read f d; do
  90     if test -L "$f$compext"; then
  91         test -f "$destdir/$f$compext" && continue
  92         $verbose "copying link $f$compext"
  93         install -d "$destdir/$(dirname "$f")"
  94         cp -d "$f$compext" "$destdir/$f$compext"
  95
  96         if test "x$d" != "x"; then
  97             target="$(readlink "$f")"
  98
  99             if test "x$target" != "x$d"; then
 100                 $verbose "WARNING: inconsistent symlink target: $target != $d"
 101             else
 102                 if test "x$prune" != "xyes"; then
 103                     $verbose "WARNING: unneeded symlink detected: $f"
 104                 else
 105                     $verbose "WARNING: pruning unneeded symlink $f"
 106                     rm -f "$f$compext"
 107                 fi
 108             fi
 109         else
 110             $verbose "WARNING: missing target for symlink $f"
 111         fi
 112     else
 113         directory="$destdir/$(dirname "$f")"
 114         install -d "$directory"
 115         target="$(cd "$directory" && realpath -m -s "$d")"
 116         if test -d "$target"; then
 117             $verbose "creating link $f -> $d"
 118             ln -s "$d" "$destdir/$f"
 119         else
 120             $verbose "creating link $f$compext -> $d$compext"
 121             ln -s "$d$compext" "$destdir/$f$compext"
 122         fi
 123     fi
 124 done
 125
 126 exit 0
 127
 128 # vim: et sw=4 sts=4 ts=4