diff options
Diffstat (limited to 'recipes/initscripts/initscripts-openmoko/populate-volatile.sh')
| -rw-r--r-- | recipes/initscripts/initscripts-openmoko/populate-volatile.sh | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/recipes/initscripts/initscripts-openmoko/populate-volatile.sh b/recipes/initscripts/initscripts-openmoko/populate-volatile.sh new file mode 100644 index 0000000000..6fb23d758d --- /dev/null +++ b/recipes/initscripts/initscripts-openmoko/populate-volatile.sh @@ -0,0 +1,248 @@ +#!/bin/sh + +. /etc/default/rcS + +CFGDIR="/etc/default/volatiles" +TMPROOT="/var/tmp" +COREDEF="00_core" + +[ "${VERBOSE}" != "no" ] && echo "Populating volatile Filesystems." + +create_file() { + EXEC=" + touch \"$1\"; + chown ${TUSER}.${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\" >/dev/tty0 2>&1; + chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" >/dev/tty0 2>&1 " + + test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache + + [ -e "$1" ] && { + [ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping." + } || { + eval $EXEC + } +} + +mk_dir() { + EXEC=" + mkdir -p \"$1\"; + chown ${TUSER}.${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\" >/dev/tty0 2>&1; + chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" >/dev/tty0 2>&1 " + + test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache + + [ -e "$1" ] && { + [ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping." + } || { + eval $EXEC + } +} + +link_file() { + EXEC="test -e \"$2\" -o -L $2 || ln -s \"$1\" \"$2\" >/dev/tty0 2>&1" + + test "$VOLATILE_ENABLE_CACHE" = yes && echo " $EXEC" >> /etc/volatile.cache + + [ -e "$2" ] && { + echo "Cannot create link over existing -${TNAME}-." >&2 + } || { + eval $EXEC + } +} + +check_requirements() { + + cleanup() { + rm "${TMP_INTERMED}" + rm "${TMP_DEFINED}" + rm "${TMP_COMBINED}" + } + + CFGFILE="$1" + + [ `basename "${CFGFILE}"` = "${COREDEF}" ] && return 0 + + TMP_INTERMED="${TMPROOT}/tmp.$$" + TMP_DEFINED="${TMPROOT}/tmpdefined.$$" + TMP_COMBINED="${TMPROOT}/tmpcombined.$$" + + + cat /etc/passwd | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}" + cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 2 > "${TMP_INTERMED}" + cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}" + + NR_DEFINED_USERS="`cat "${TMP_DEFINED}" | wc -l`" + NR_COMBINED_USERS="`cat "${TMP_COMBINED}" | wc -l`" + + [ "${NR_DEFINED_USERS}" -ne "${NR_COMBINED_USERS}" ] && { + echo "Undefined users:" + diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>" + cleanup + return 1 + } + + + cat /etc/group | sed 's@\(^:\)*:.*@\1@' | sort | uniq > "${TMP_DEFINED}" + cat ${CFGFILE} | grep -v "^#" | cut -d " " -f 3 > "${TMP_INTERMED}" + cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}" + + NR_DEFINED_GROUPS="`cat "${TMP_DEFINED}" | wc -l`" + NR_COMBINED_GROUPS="`cat "${TMP_COMBINED}" | wc -l`" + + [ "${NR_DEFINED_GROUPS}" -ne "${NR_COMBINED_GROUPS}" ] && { + echo "Undefined groups:" + diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>" + cleanup + return 1 + } + + # Add checks for required directories here + + cleanup + return 0 + } + +apply_cfgfile() { + + CFGFILE="$1" + + check_requirements "${CFGFILE}" || { + echo "Skipping ${CFGFILE}" + return 1 + } + + cat ${CFGFILE} | grep -v "^#" | \ + while read LINE; do + + eval `echo "$LINE" | sed -n "s/\(.*\)\ \(.*\) \(.*\)\ \(.*\)\ \(.*\)\ \(.*\)/TTYPE=\1 ; TUSER=\2; TGROUP=\3; TMODE=\4; TNAME=\5 TLTARGET=\6/p"` + + [ "${VERBOSE}" != "no" ] && echo "Checking for -${TNAME}-." + + + [ "${TTYPE}" = "l" ] && { + TSOURCE="$TLTARGET" + [ -L "${TNAME}" ] || { + [ "${VERBOSE}" != "no" ] && echo "Creating link -${TNAME}- pointing to -${TSOURCE}-." + link_file "${TSOURCE}" "${TNAME}" + } + continue + } + + [ -L "${TNAME}" ] && { + [ "${VERBOSE}" != "no" ] && echo "Found link." + NEWNAME=`ls -l "${TNAME}" | sed -e 's/^.*-> \(.*\)$/\1/'` + echo ${NEWNAME} | grep -v "^/" >/dev/null && { + TNAME="`echo ${TNAME} | sed -e 's@\(.*\)/.*@\1@'`/${NEWNAME}" + [ "${VERBOSE}" != "no" ] && echo "Converted relative linktarget to absolute path -${TNAME}-." + } || { + TNAME="${NEWNAME}" + [ "${VERBOSE}" != "no" ] && echo "Using absolute link target -${TNAME}-." + } + } + + case "${TTYPE}" in + "f") [ "${VERBOSE}" != "no" ] && echo "Creating file -${TNAME}-." + create_file "${TNAME}" + ;; + "d") [ "${VERBOSE}" != "no" ] && echo "Creating directory -${TNAME}-." + mk_dir "${TNAME}" + # Add check to see if there's an entry in fstab to mount. + ;; + *) [ "${VERBOSE}" != "no" ] && echo "Invalid type -${TTYPE}-." + continue + ;; + esac + + + done + + return 0 + + } + +SKEL_DIR="/etc/volatile/skel" + +skel_mount() { + VOLATILE="$1" + + [ -d "$VOLATILE" ] || mkdir -p "$VOLATILE" + + mount -t tmpfs volatile "$VOLATILE" -omode=0755 +} + +skel_load() { + VOLATILE="$1" + + if ! skel_mount "$VOLATILE"; then + echo "failed to mount $VOLATILE" + return 1 + fi + + cp -a "$SKEL_DIR"/* "$VOLATILE"/ +} + +skel_update() { + VOLATILE="$1" + + if ! skel_mount "$VOLATILE"; then + echo "failed to update" + return 1 + fi + + echo -n "Populating volatile directory..." + for file in `ls -1 "${CFGDIR}" | sort`; do + apply_cfgfile "${CFGDIR}/${file}" + done + echo "done" + + if [ -d "$SKEL_DIR" ]; then + rm -rf "$SKEL_DIR" + fi + + mkdir -p "$SKEL_DIR"/tmp + cp -a "$VOLATILE"/* "$SKEL_DIR"/ +} + +populate() { + if [ -d "$SKEL_DIR"/tmp ]; then + skel_load /var/volatile + else + skel_update /var/volatile + fi + + for d in /var/volatile/* + do + ln -sf "$d" /var + done + + if ! test -L /tmp; then + rm -rf /tmp + ln -sf /var/tmp /tmp + fi +} + +case "$1" in + start) + if grep -q "^volatile " /proc/mounts; then + echo "volatile directory is already mounted" + else + populate + fi + ;; + stop) + : # no-op + ;; + update) + if skel_update /var/volatile; then + umount /var/volatile + if grep -q "^volatile " /proc/mounts; then + cp -a "$SKEL_DIR"/* /var/volatile + fi + fi + ;; + *) + echo "Usage: /etc/init.d/populate-volatile {start|stop|update}" + ;; +esac + +: exit 0 |