script/cpio_modules_add.sh

   1 #!/bin/sh
   2
   3 uniqify()
   4 {
   5     local p=
   6     local paths_list=
   7     for p in $MODULES_ORDERED; do
   8         case "$paths_list" in
   9         *"$p"*) ;;
  10         *) paths_list="$paths_list,$p";;
  11         esac
  12     done
  13     #trim spurious coma
  14     MODULES_ORDERED="${paths_list#,*}"
  15 }
  16
  17 modules_ordered_build()
  18 {
  19     local deps=
  20     local m=
  21     for m; do
  22         if modinfo $kmod_option_basedir -k $kernel_release $m >/dev/null 2>&1;then
  23             echo "module $m found, adding..."
  24         else
  25             echo "module $m not found, skipping..."
  26             continue
  27         fi
  28         deps=$(modinfo $kmod_option_basedir -k $kernel_release \
  29                                                              --field depends $m)
  30         if test -n "$deps"; then
  31             modules_ordered_build $deps
  32         fi
  33         MODULES_ORDERED="$MODULES_ORDERED,$(modinfo $kmod_option_basedir \
  34                                         -k $kernel_release --field filename $m)"
  35     done
  36     #trim spurious coma
  37     MODULES_ORDERED="${MODULES_ORDERED#,*}"
  38 }
  39
  40 #recursive emiting of cpio dir entries for the module
  41 dirs_emit()
  42 {
  43     local cur=$(dirname $1)
  44     if test "$cur" = "/lib/modules/$kernel_release"; then
  45         return;
  46     fi
  47
  48     for p in $DIRS_EMITED; do
  49         if test "$p" = "$cur"; then
  50             return;
  51         fi
  52     done
  53     dirs_emit $cur
  54     echo "dir $cur 0755 0 0" >>$cpio
  55     DIRS_EMITED=$DIRS_EMITED,$cur
  56 }
  57
  58 cpio_kmod_files='modules.alias.bin,modules.builtin.bin,modules.dep.bin'
  59
  60 cpio_emit()
  61 {
  62     local f=
  63     local m=
  64     for f in $cpio_kmod_files; do
  65         echo "file /lib/modules/$kernel_release/$f \
  66 $kernel_modules_base_dir/lib/modules/$kernel_release/$f \
  67 0644 0 0" >>$cpio
  68     done
  69
  70     for m in $MODULES_ORDERED; do
  71         dirs_emit $m
  72         echo "file $m $kernel_modules_base_dir$m 0644 0 0" >>$cpio
  73     done
  74 }
  75
  76 ################################################################################
  77
  78 kernel_modules_base_dir=$1
  79 kernel_release=$2
  80 modules=$3
  81 cpio=$4
  82 MODULES_ORDERED=
  83 DIRS_EMITED=/lib/modules/$kernel_release
  84
  85 if test "$kernel_modules_base_dir" = '/'; then
  86     kmod_option_basedir=
  87     kernel_modules_base_dir=
  88 else
  89     kmod_option_basedir="--basedir=$kernel_modules_base_dir"
  90 fi
  91
  92 IFS=,
  93 modules_ordered_build $3
  94 uniqify
  95 cpio_emit