sbin/mkinitrd/mkinitrd.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2010
   4 #       The DragonFly Project.  All rights reserved.
   5 #
   6 # Redistribution and use in source and binary forms, with or without
   7 # modification, are permitted provided that the following conditions
   8 # are met:
   9 #
  10 # 1. Redistributions of source code must retain the above copyright
  11 #    notice, this list of conditions and the following disclaimer.
  12 # 2. Redistributions in binary form must reproduce the above copyright
  13 #    notice, this list of conditions and the following disclaimer in
  14 #    the documentation and/or other materials provided with the
  15 #    distribution.
  16 # 3. Neither the name of The DragonFly Project nor the names of its
  17 #    contributors may be used to endorse or promote products derived
  18 #    from this software without specific, prior written permission.
  19 #
  20 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23 # FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  24 # COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25 # INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26 # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  28 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30 # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32 #
  33
  34 . /etc/defaults/mkinitrd.conf
  35
  36 if [ -r /etc/mkinitrd.conf ]; then
  37         . /etc/mkinitrd.conf
  38         echo "Loaded configuration from /etc/mkinitrd.conf"
  39 fi
  40
  41 VN_DEV=""
  42
  43 create_vn()
  44 {
  45         if [ ! -d  $BUILD_DIR ]; then
  46                 mkdir -p $BUILD_DIR
  47                 echo "Created build directory $BUILD_DIR"
  48         fi
  49         vnconfig -c -S ${INITRD_SIZE} -Z -T vn ${TMP_DIR}/initrd.img \
  50             > ${TMP_DIR}/vndev.mkinitrd
  51         if [ $? -ne 0 ]; then
  52             echo "Failed to configure vn device"
  53             exit 1
  54         fi
  55
  56         VN_DEV=`cat ${TMP_DIR}/vndev.mkinitrd | cut -f 2 -d ' '`
  57         [ -f ${TMP_DIR}/vndev.mkinitrd ] && rm ${TMP_DIR}/vndev.mkinitrd
  58
  59         echo "Configured $VN_DEV"
  60         newfs -i 131072 -m 0 /dev/${VN_DEV}s0
  61         echo "Formatted initrd image with UFS"
  62         mount /dev/${VN_DEV}s0 $BUILD_DIR
  63         echo "Mounted initrd image on ${BUILD_DIR}"
  64 }
  65
  66 destroy_vn()
  67 {
  68         umount /dev/${VN_DEV}s0
  69         echo "Unmounted initrd image"
  70         vnconfig -u $VN_DEV
  71         echo "Unconfigured $VN_DEV"
  72 }
  73
  74 make_hier()
  75 {
  76         for dir in ${INITRD_DIRS}; do
  77                 mkdir -p ${BUILD_DIR}/${dir}
  78         done
  79
  80         echo "Created directory structure"
  81 }
  82
  83 copy_content()
  84 {
  85         for dir in ${CONTENT_DIRS}; do
  86                 cpdup ${dir}/ ${BUILD_DIR}/
  87         done
  88 }
  89
  90 print_info()
  91 {
  92         lt ${BUILD_DIR}
  93         df -h | head -n 1
  94         df -h | grep $VN_DEV
  95 }
  96
  97 usage()
  98 {
  99         echo "usage: $0 [-b bootdir] [-c contentsdir] [-t tmpdir]"
 100         exit 2
 101 }
 102
 103 args=`getopt b:c:t: $*`
 104 test $? -ne 0 && usage
 105
 106 set -- $args
 107 for i; do
 108         case "$i" in
 109         -b)     BOOT_DIR="$2"; shift; shift;;
 110         -c)     CONTENT_DIR="$2"; shift; shift;;
 111         -t)     TMP_DIR="$2"; shift; shift;;
 112         --)     shift; break;
 113         esac
 114 done
 115 test ! -d ${BOOT_DIR} && usage
 116 test ! -d ${CONTENT_DIR} && usage
 117 test ! -d ${TMP_DIR} && usage
 118 test ! -z $1 && usage
 119 BUILD_DIR="${TMP_DIR}/initrd"
 120
 121 create_vn
 122 copy_content
 123 make_hier
 124 print_info
 125 destroy_vn
 126 /usr/bin/gzip -9 ${TMP_DIR}/initrd.img
 127 mv ${TMP_DIR}/initrd.img.gz ${BOOT_DIR}/kernel/initrd.img.gz