org.handhelds.familiar/packages/initscripts/initscripts-1.0/populate-volatile.sh

   1 #!/bin/sh
   2
   3 . /etc/default/rcS
   4
   5 CFGDIR="/etc/default/volatiles"
   6 TMPROOT="/var/tmp"
   7 COREDEF="00_core"
   8
   9 ls ${CFGDIR}/*  2> /dev/null > /dev/null || exit 0
  10
  11 [ "${VERBOSE}" != "no" ] && echo "Populating volatile Filesystems."
  12
  13
  14 check_requirements() {
  15
  16   cleanup() {
  17     rm "${TMP_INTERMED}"
  18     rm "${TMP_DEFINED}"
  19     rm "${TMP_COMBINED}"
  20     }
  21
  22   CFGFILE="$1"
  23
  24   [ `basename "${CFGFILE}"` = "${COREDEF}" ] && return 0
  25
  26   TMP_INTERMED="${TMPROOT}/tmp.$$"
  27   TMP_DEFINED="${TMPROOT}/tmpdefined.$$"
  28   TMP_COMBINED="${TMPROOT}/tmpcombined.$$"
  29
  30
  31   cat /etc/passwd | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}"
  32   cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 2 > "${TMP_INTERMED}"
  33   cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}"
  34
  35   NR_DEFINED_USERS="`cat "${TMP_DEFINED}" | wc -l`"
  36   NR_COMBINED_USERS="`cat "${TMP_COMBINED}" | wc -l`"
  37
  38   [ "${NR_DEFINED_USERS}" -ne "${NR_COMBINED_USERS}" ] && {
  39     echo "Undefined users:"
  40     diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>"
  41     cleanup
  42     return 1
  43     }
  44
  45
  46   cat /etc/group | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}"
  47   cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 3 > "${TMP_INTERMED}"
  48   cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}"
  49
  50   NR_DEFINED_GROUPS="`cat "${TMP_DEFINED}" | wc -l`"
  51   NR_COMBINED_GROUPS="`cat "${TMP_COMBINED}" | wc -l`"
  52
  53   [ "${NR_DEFINED_GROUPS}" -ne "${NR_COMBINED_GROUPS}" ] && {
  54     echo "Undefined groups:"
  55     diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>"
  56     cleanup
  57     return 1
  58     }
  59
  60   # Add checks for required directories here
  61
  62   cleanup
  63   return 0
  64   }
  65
  66 apply_cfgfile() {
  67
  68   CFGFILE="$1"
  69
  70   check_requirements "${CFGFILE}" || {
  71     echo "Skipping ${CFGFILE}"
  72     return 1
  73     }
  74
  75   cat ${CFGFILE} | grep -v "^#" | \
  76   while read LINE; do
  77     TTYPE=`echo ${LINE} | cut -d " " -f 1`
  78     TUSER=`echo ${LINE} | cut -d " " -f 2`
  79     TGROUP=`echo ${LINE} | cut -d " " -f 3`
  80     TMODE=`echo ${LINE} | cut -d " " -f 4`
  81     TNAME=`echo ${LINE} | cut -d " " -f 5`
  82
  83     [ "${VERBOSE}" != "no" ] && echo "Checking for -${TNAME}-."
  84
  85     [ "${TTYPE}" = "l" ] && {
  86       [ -e "${TNAME}" ] && {
  87         echo "Cannot create link over existing -${TNAME}-." >&2
  88         } || {
  89         TSOURCE=`echo ${LINE} | cut -d " " -f 6`
  90         [ "${VERBOSE}" != "no" ] && echo "Creating link -${TNAME}- pointing to -${TSOURCE}-."
  91         ln -s "${TSOURCE}" "${TNAME}"
  92         }
  93       continue
  94       }
  95
  96     [ -L "${TNAME}" ] && {
  97       [ "${VERBOSE}" != "no" ] && echo "Found link."
  98       NEWNAME=`ls -l "${TNAME}" | sed -e 's/^.*-> \(.*\)$/\1/'`
  99       echo ${NEWNAME} | grep -v "^/" >/dev/null && {
 100         TNAME="`echo ${TNAME} | sed -e 's@\(.*\)/.*@\1@'`/${NEWNAME}"
 101         [ "${VERBOSE}" != "no" ] && echo "Converted relative linktarget to absolute path -${TNAME}-."
 102         } || {
 103         TNAME="${NEWNAME}"
 104         [ "${VERBOSE}" != "no" ] && echo "Using absolute link target -${TNAME}-."
 105         }
 106       }
 107
 108     [ -e "${TNAME}" ] && {
 109       [ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping."
 110       continue
 111       }
 112
 113     case "${TTYPE}" in
 114       "f")  [ "${VERBOSE}" != "no" ] && echo "Creating file -${TNAME}-."
 115             touch "${TNAME}"
 116             ;;
 117       "d")  [ "${VERBOSE}" != "no" ] && echo "Creating directory -${TNAME}-."
 118             mkdir -p "${TNAME}"
 119             # Add check to see if there's an entry in fstab to mount.
 120             ;;
 121       *)    [ "${VERBOSE}" != "no" ] && echo "Invalid type -${TTYPE}-."
 122             continue
 123             ;;
 124     esac
 125
 126     chown ${TUSER} ${TNAME} || echo "Failed to set owner -${TUSER}- for -${TNAME}-." >&2
 127     chgrp ${TGROUP} ${TNAME} || echo "Failed to set group -${TGROUP}- for -${TNAME}-." >&2
 128     chmod ${TMODE} ${TNAME} || echo "Failed to set mode -${TMODE}- for -${TNAME}-." >&2
 129
 130     done
 131
 132   return 0
 133
 134   }
 135
 136
 137 for file in `ls -1 "${CFGDIR}" | sort`; do
 138   apply_cfgfile "${CFGDIR}/${file}"
 139   done
 140