code.vuplus.com Git - vuplus_openvuplus_3.0/blob - meta-openvuplus/recipes-core/initscripts/initscripts-1.0/populate-volatile.sh

   1 #!/bin/sh
   2 ### BEGIN INIT INFO
   3 # Provides:             volatile
   4 # Required-Start:       $local_fs
   5 # Required-Stop:      $local_fs
   6 # Default-Start:        S
   7 # Default-Stop:
   8 # Short-Description:  Populate the volatile filesystem
   9 ### END INIT INFO
  10
  11 . /etc/default/rcS
  12
  13 CFGDIR="/etc/default/volatiles"
  14 TMPROOT="/var/tmp"
  15 COREDEF="00_core"
  16
  17 [ "${VERBOSE}" != "no" ] && echo "Populating volatile Filesystems."
  18
  19 create_file() {
  20         EXEC="
  21         touch \"$1\";
  22         chown ${TUSER}.${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\" >/dev/ttyS0 2>&1;
  23         chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" >/dev/ttyS0 2>&1 "
  24
  25         test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache.build
  26
  27         [ -e "$1" ] && {
  28           [ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping."
  29         } || {
  30           eval $EXEC &
  31         }
  32 }
  33
  34 mk_dir() {
  35         EXEC="
  36         mkdir -p \"$1\";
  37         chown ${TUSER}.${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\" >/dev/ttyS0 2>&1;
  38         chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" >/dev/ttyS0 2>&1 "
  39
  40         test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache.build
  41
  42         [ -e "$1" ] && {
  43           [ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping."
  44         } || {
  45           eval $EXEC &
  46         }
  47 }
  48
  49 link_file() {
  50         EXEC="test -e \"$2\" -o -L $2 || ln -s \"$1\" \"$2\" >/dev/ttyS0 2>&1"
  51
  52         test "$VOLATILE_ENABLE_CACHE" = yes && echo "   $EXEC" >> /etc/volatile.cache.build
  53
  54         [ -e "$2" ] && {
  55           echo "Cannot create link over existing -${TNAME}-." >&2
  56         } || {
  57           eval $EXEC &
  58         }
  59 }
  60
  61 check_requirements() {
  62
  63   cleanup() {
  64     rm "${TMP_INTERMED}"
  65     rm "${TMP_DEFINED}"
  66     rm "${TMP_COMBINED}"
  67     }
  68
  69   CFGFILE="$1"
  70
  71   [ `basename "${CFGFILE}"` = "${COREDEF}" ] && return 0
  72
  73   TMP_INTERMED="${TMPROOT}/tmp.$$"
  74   TMP_DEFINED="${TMPROOT}/tmpdefined.$$"
  75   TMP_COMBINED="${TMPROOT}/tmpcombined.$$"
  76
  77
  78   cat /etc/passwd | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}"
  79   cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 2 > "${TMP_INTERMED}"
  80   cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}"
  81
  82   NR_DEFINED_USERS="`cat "${TMP_DEFINED}" | wc -l`"
  83   NR_COMBINED_USERS="`cat "${TMP_COMBINED}" | wc -l`"
  84
  85   [ "${NR_DEFINED_USERS}" -ne "${NR_COMBINED_USERS}" ] && {
  86     echo "Undefined users:"
  87     diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>"
  88     cleanup
  89     return 1
  90     }
  91
  92
  93   cat /etc/group | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}"
  94   cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 3 > "${TMP_INTERMED}"
  95   cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}"
  96
  97   NR_DEFINED_GROUPS="`cat "${TMP_DEFINED}" | wc -l`"
  98   NR_COMBINED_GROUPS="`cat "${TMP_COMBINED}" | wc -l`"
  99
 100   [ "${NR_DEFINED_GROUPS}" -ne "${NR_COMBINED_GROUPS}" ] && {
 101     echo "Undefined groups:"
 102     diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>"
 103     cleanup
 104     return 1
 105     }
 106
 107   # Add checks for required directories here
 108
 109   cleanup
 110   return 0
 111   }
 112
 113 apply_cfgfile() {
 114
 115   CFGFILE="$1"
 116
 117   check_requirements "${CFGFILE}" || {
 118     echo "Skipping ${CFGFILE}"
 119     return 1
 120     }
 121
 122   cat ${CFGFILE} | grep -v "^#" | \
 123   while read LINE; do
 124
 125     eval `echo "$LINE" | sed -n "s/\(.*\)\ \(.*\) \(.*\)\ \(.*\)\ \(.*\)\ \(.*\)/TTYPE=\1 ; TUSER=\2; TGROUP=\3; TMODE=\4; TNAME=\5 TLTARGET=\6/p"`
 126
 127     [ "${VERBOSE}" != "no" ] && echo "Checking for -${TNAME}-."
 128
 129
 130     [ "${TTYPE}" = "l" ] && {
 131       TSOURCE="$TLTARGET"
 132       [ -L "${TNAME}" ] || {
 133         [ "${VERBOSE}" != "no" ] && echo "Creating link -${TNAME}- pointing to -${TSOURCE}-."
 134         link_file "${TSOURCE}" "${TNAME}" &
 135         }
 136       continue
 137       }
 138
 139     [ -L "${TNAME}" ] && {
 140       [ "${VERBOSE}" != "no" ] && echo "Found link."
 141       NEWNAME=`ls -l "${TNAME}" | sed -e 's/^.*-> \(.*\)$/\1/'`
 142       echo ${NEWNAME} | grep -v "^/" >/dev/null && {
 143         TNAME="`echo ${TNAME} | sed -e 's@\(.*\)/.*@\1@'`/${NEWNAME}"
 144         [ "${VERBOSE}" != "no" ] && echo "Converted relative linktarget to absolute path -${TNAME}-."
 145         } || {
 146         TNAME="${NEWNAME}"
 147         [ "${VERBOSE}" != "no" ] && echo "Using absolute link target -${TNAME}-."
 148         }
 149       }
 150
 151     case "${TTYPE}" in
 152       "f")  [ "${VERBOSE}" != "no" ] && echo "Creating file -${TNAME}-."
 153             create_file "${TNAME}" &
 154             ;;
 155       "d")  [ "${VERBOSE}" != "no" ] && echo "Creating directory -${TNAME}-."
 156             mk_dir "${TNAME}" &
 157             # Add check to see if there's an entry in fstab to mount.
 158             ;;
 159       *)    [ "${VERBOSE}" != "no" ] && echo "Invalid type -${TTYPE}-."
 160             continue
 161             ;;
 162     esac
 163
 164
 165     done
 166
 167   return 0
 168
 169   }
 170
 171 clearcache=0
 172 exec 9</proc/cmdline
 173 while read line <&9
 174 do
 175         case "$line" in
 176                 *clearcache*)  clearcache=1
 177                                ;;
 178                 *)             continue
 179                                ;;
 180         esac
 181 done
 182 exec 9>&-
 183
 184 if test -e /etc/volatile.cache -a "$VOLATILE_ENABLE_CACHE" = "yes" -a "x$1" != "xupdate" -a "x$clearcache" = "x0"
 185 then
 186         sh /etc/volatile.cache
 187 else
 188         rm -f /etc/volatile.cache /etc/volatile.cache.build
 189         for file in `ls -1 "${CFGDIR}" | sort`; do
 190                 apply_cfgfile "${CFGDIR}/${file}"
 191         done
 192
 193         [ -e /etc/volatile.cache.build ] && sync && mv /etc/volatile.cache.build /etc/volatile.cache
 194 fi
 195
 196 if test -f /etc/ld.so.cache -a ! -f /var/run/ld.so.cache
 197 then
 198         ln -s /etc/ld.so.cache /var/run/ld.so.cache
 199 fi