198 lines
5.0 KiB
Bash
Executable File
198 lines
5.0 KiB
Bash
Executable File
#!/bin/sh
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### BEGIN INIT INFO
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# Provides: volatile
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# Required-Start: $local_fs
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# Required-Stop: $local_fs
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# Default-Start: S
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# Default-Stop:
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# Short-Description: Populate the volatile filesystem
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### END INIT INFO
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. /etc/default/rcS
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CFGDIR="/etc/default/volatiles"
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TMPROOT="/var/tmp"
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COREDEF="00_core"
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[ "${VERBOSE}" != "no" ] && echo "Populating volatile Filesystems."
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create_file() {
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EXEC="
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touch \"$1\";
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chown ${TUSER}.${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\" >/dev/tty0 2>&1;
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chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" >/dev/tty0 2>&1 "
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test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache
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[ -e "$1" ] && {
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[ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping."
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} || {
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eval $EXEC &
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}
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}
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mk_dir() {
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EXEC="
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mkdir -p \"$1\";
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chown ${TUSER}.${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\" >/dev/tty0 2>&1;
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chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" >/dev/tty0 2>&1 "
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test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache
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[ -e "$1" ] && {
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[ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping."
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} || {
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eval $EXEC &
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}
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}
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link_file() {
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EXEC="test -e \"$2\" -o -L $2 || ln -s \"$1\" \"$2\" >/dev/tty0 2>&1"
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test "$VOLATILE_ENABLE_CACHE" = yes && echo " $EXEC" >> /etc/volatile.cache
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[ -e "$2" ] && {
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echo "Cannot create link over existing -${TNAME}-." >&2
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} || {
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eval $EXEC &
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}
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}
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check_requirements() {
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cleanup() {
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rm "${TMP_INTERMED}"
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rm "${TMP_DEFINED}"
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rm "${TMP_COMBINED}"
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}
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CFGFILE="$1"
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[ `basename "${CFGFILE}"` = "${COREDEF}" ] && return 0
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TMP_INTERMED="${TMPROOT}/tmp.$$"
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TMP_DEFINED="${TMPROOT}/tmpdefined.$$"
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TMP_COMBINED="${TMPROOT}/tmpcombined.$$"
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cat /etc/passwd | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}"
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cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 2 > "${TMP_INTERMED}"
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cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}"
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NR_DEFINED_USERS="`cat "${TMP_DEFINED}" | wc -l`"
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NR_COMBINED_USERS="`cat "${TMP_COMBINED}" | wc -l`"
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[ "${NR_DEFINED_USERS}" -ne "${NR_COMBINED_USERS}" ] && {
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echo "Undefined users:"
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diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>"
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cleanup
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return 1
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}
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cat /etc/group | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}"
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cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 3 > "${TMP_INTERMED}"
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cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}"
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NR_DEFINED_GROUPS="`cat "${TMP_DEFINED}" | wc -l`"
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NR_COMBINED_GROUPS="`cat "${TMP_COMBINED}" | wc -l`"
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[ "${NR_DEFINED_GROUPS}" -ne "${NR_COMBINED_GROUPS}" ] && {
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echo "Undefined groups:"
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diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>"
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cleanup
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return 1
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}
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# Add checks for required directories here
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cleanup
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return 0
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}
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apply_cfgfile() {
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CFGFILE="$1"
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check_requirements "${CFGFILE}" || {
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echo "Skipping ${CFGFILE}"
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return 1
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}
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cat ${CFGFILE} | grep -v "^#" | \
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while read LINE; do
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eval `echo "$LINE" | sed -n "s/\(.*\)\ \(.*\) \(.*\)\ \(.*\)\ \(.*\)\ \(.*\)/TTYPE=\1 ; TUSER=\2; TGROUP=\3; TMODE=\4; TNAME=\5 TLTARGET=\6/p"`
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[ "${VERBOSE}" != "no" ] && echo "Checking for -${TNAME}-."
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[ "${TTYPE}" = "l" ] && {
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TSOURCE="$TLTARGET"
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[ -L "${TNAME}" ] || {
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[ "${VERBOSE}" != "no" ] && echo "Creating link -${TNAME}- pointing to -${TSOURCE}-."
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link_file "${TSOURCE}" "${TNAME}" &
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}
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continue
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}
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[ -L "${TNAME}" ] && {
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[ "${VERBOSE}" != "no" ] && echo "Found link."
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NEWNAME=`ls -l "${TNAME}" | sed -e 's/^.*-> \(.*\)$/\1/'`
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echo ${NEWNAME} | grep -v "^/" >/dev/null && {
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TNAME="`echo ${TNAME} | sed -e 's@\(.*\)/.*@\1@'`/${NEWNAME}"
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[ "${VERBOSE}" != "no" ] && echo "Converted relative linktarget to absolute path -${TNAME}-."
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} || {
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TNAME="${NEWNAME}"
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[ "${VERBOSE}" != "no" ] && echo "Using absolute link target -${TNAME}-."
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}
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}
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case "${TTYPE}" in
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"f") [ "${VERBOSE}" != "no" ] && echo "Creating file -${TNAME}-."
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create_file "${TNAME}" &
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;;
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"d") [ "${VERBOSE}" != "no" ] && echo "Creating directory -${TNAME}-."
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mk_dir "${TNAME}" &
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# Add check to see if there's an entry in fstab to mount.
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;;
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*) [ "${VERBOSE}" != "no" ] && echo "Invalid type -${TTYPE}-."
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continue
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;;
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esac
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done
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return 0
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}
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clearcache=0
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exec 9</proc/cmdline
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while read line <&9
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do
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case "$line" in
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*clearcache*) clearcache=1
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;;
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*) continue
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;;
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esac
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done
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exec 9>&-
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if test -e /etc/volatile.cache -a "$VOLATILE_ENABLE_CACHE" = "yes" -a "x$1" != "xupdate" -a "x$clearcache" = "x0"
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then
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sh /etc/volatile.cache
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else
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rm -f /etc/volatile.cache
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for file in `ls -1 "${CFGDIR}" | sort`; do
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apply_cfgfile "${CFGDIR}/${file}"
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done
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fi
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if test -f /etc/ld.so.cache -a ! -f /var/run/ld.so.cache
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then
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ln -s /etc/ld.so.cache /var/run/ld.so.cache
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fi
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