BOOK/bootscripts/lfs/init.d/cleanfs

   1 #!/bin/sh
   2 ########################################################################
   3 # Begin cleanfs
   4 #
   5 # Description : Clean file system
   6 #
   7 # Authors     : Gerard Beekmans - gerard@linuxfromscratch.org
   8 #               DJ Lucas - dj@linuxfromscratch.org
   9 # Update      : Bruce Dubbs - bdubbs@linuxfromscratch.org
  10 #
  11 # Version     : LFS 7.0
  12 #
  13 ########################################################################
  14
  15 ### BEGIN INIT INFO
  16 # Provides:            cleanfs
  17 # Required-Start:      $local_fs
  18 # Should-Start:
  19 # Required-Stop:
  20 # Should-Stop:
  21 # Default-Start:       S
  22 # Default-Stop:
  23 # Short-Description:   Cleans temporary directories early in the boot process.
  24 # Description:         Cleans temporary directories /run, /var/lock, and
  25 #                      optionally, /tmp.  cleanfs also creates /run/utmp
  26 #                      and any files defined in /etc/sysconfig/createfiles.
  27 # X-LFS-Provided-By:   LFS
  28 ### END INIT INFO
  29
  30 . /lib/lsb/init-functions
  31
  32 # Function to create files/directory on boot.
  33 create_files()
  34 {
  35    # Input to file descriptor 9 and output to stdin (redirection)
  36    exec 9>&0 < /etc/sysconfig/createfiles
  37
  38    while read name type perm usr grp dtype maj min junk
  39    do
  40       # Ignore comments and blank lines.
  41       case "${name}" in
  42          ""|\#*) continue ;;
  43       esac
  44
  45       # Ignore existing files.
  46       if [ ! -e "${name}" ]; then
  47          # Create stuff based on its type.
  48          case "${type}" in
  49             dir)
  50                mkdir "${name}"
  51                ;;
  52             file)
  53                :> "${name}"
  54                ;;
  55             dev)
  56                case "${dtype}" in
  57                   char)
  58                      mknod "${name}" c ${maj} ${min}
  59                      ;;
  60                   block)
  61                      mknod "${name}" b ${maj} ${min}
  62                      ;;
  63                   pipe)
  64                      mknod "${name}" p
  65                      ;;
  66                   *)
  67                      log_warning_msg "\nUnknown device type: ${dtype}"
  68                      ;;
  69                esac
  70                ;;
  71             *)
  72                log_warning_msg "\nUnknown type: ${type}"
  73                continue
  74                ;;
  75          esac
  76
  77          # Set up the permissions, too.
  78          chown ${usr}:${grp} "${name}"
  79          chmod ${perm} "${name}"
  80       fi
  81    done
  82
  83    # Close file descriptor 9 (end redirection)
  84    exec 0>&9 9>&-
  85    return 0
  86 }
  87
  88 case "${1}" in
  89    start)
  90       log_info_msg "Cleaning file systems:"
  91
  92       if [ "${SKIPTMPCLEAN}" = "" ]; then
  93          log_info_msg2 " /tmp"
  94          cd /tmp &&
  95          find . -xdev -mindepth 1 ! -name lost+found -delete || failed=1
  96       fi
  97
  98       > /run/utmp
  99
 100       if grep -q '^utmp:' /etc/group ; then
 101          chmod 664 /run/utmp
 102          chgrp utmp /run/utmp
 103       fi
 104
 105       (exit ${failed})
 106       evaluate_retval
 107
 108       if egrep -qv '^(#|$)' /etc/sysconfig/createfiles 2>/dev/null; then
 109          log_info_msg "Creating files and directories... "
 110          create_files      # Always returns 0
 111          evaluate_retval
 112       fi
 113
 114       exit $failed
 115       ;;
 116    *)
 117       echo "Usage: ${0} {start}"
 118       exit 1
 119       ;;
 120 esac
 121
 122 # End cleanfs