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authorJohn Lee <john_lee@openmoko.org>2009-01-12 14:39:16 +0800
committerJohn Lee <john_lee@openmoko.org>2009-01-12 14:39:16 +0800
commit366bf6043abfbbbfa98168548f42aa9aaf6c28b9 (patch)
treeec24779b5ed382cbd3077595cd54a62fad4741c7 /packages/initscripts/initscripts-openmoko/populate-volatile.sh
parentb4e78908d6ed0b4a142dabc9e72b1a81b7f3c581 (diff)
parent5c898f6e20d5d27a1cc0747746d35f706fd6dfff (diff)
Merge commit 'origin/john_lee/fastboot-devel' into org.openembedded.dev
Diffstat (limited to 'packages/initscripts/initscripts-openmoko/populate-volatile.sh')
-rw-r--r--packages/initscripts/initscripts-openmoko/populate-volatile.sh248
1 files changed, 248 insertions, 0 deletions
diff --git a/packages/initscripts/initscripts-openmoko/populate-volatile.sh b/packages/initscripts/initscripts-openmoko/populate-volatile.sh
new file mode 100644
index 0000000000..6fb23d758d
--- /dev/null
+++ b/packages/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