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