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[mount-sd] create directory writable for all users. Fixes MER#1010 #18

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[mount-sd] create directory writable for all users. Fixes MER#1010 #18

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0e6f005
refactoring: log() function, add var for mount target dir
May 19, 2015
3ae6881
[mount-sd] create directory writable for all users. Fixes MER#1010
May 19, 2015
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60 changes: 47 additions & 13 deletions scripts/mount-sd.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -10,12 +10,23 @@ MNT=/media/sdcard
MOUNT_OPTS="dirsync,noatime,users"
ACTION=$1
DEVNAME=$2
# dir to store symlinks to writable location on corresponding mounted cards
LN_DIR=/run/media

if [ -z "${ACTION}" ] || [ -z "${DEVNAME}" ]; then
exit 1
fi

systemd-cat -t mount-sd /bin/echo "Called to ${ACTION} ${DEVNAME}"
log () {
systemd-cat -t mount-sd /bin/echo $@
}

get_path_fname() {
echo ${LN_DIR}/${1}
}

log "Called to ${ACTION} ${DEVNAME}"
mkdir -p $LN_DIR

if [ "$ACTION" = "add" ]; then

Expand All @@ -25,9 +36,11 @@ if [ "$ACTION" = "add" ]; then
exit 1
fi

TARGET=$MNT/${UUID}

DIR=$(grep -w ${DEVNAME} /proc/mounts | cut -d \ -f 2)
if [ -n "$DIR" ]; then
systemd-cat -t mount-sd /bin/echo "${DEVNAME} already mounted on ${DIR}, ignoring"
log "${DEVNAME} already mounted on ${DIR}, ignoring"
exit 0
fi

Expand All @@ -39,39 +52,60 @@ if [ "$ACTION" = "add" ]; then
MINER_STATUS="$(dbus-send --type=method_call --print-reply --session --dest=org.freedesktop.Tracker1.Miner.Files /org/freedesktop/Tracker1/Miner/Files org.freedesktop.Tracker1.Miner.GetStatus | grep -o 'Idle')"
STORE_STATUS="$(dbus-send --type=method_call --print-reply --session --dest=org.freedesktop.Tracker1 /org/freedesktop/Tracker1/Status org.freedesktop.Tracker1.Status.GetStatus | grep -o 'Idle')"
test "$MINER_STATUS" = "Idle" -a "$STORE_STATUS" = "Idle" && break
systemd-cat -t mount-sd /bin/echo "Waiting $count seconds for tracker"
log "Waiting $count seconds for tracker"
sleep $count ;
count=$(( count + count ))
done

test -d $MNT/${UUID} || mkdir -p $MNT/${UUID}
chown $DEF_UID:$DEF_GID $MNT $MNT/${UUID}
touch $MNT/${UUID}
test -d ${TARGET} || mkdir -p ${TARGET}
chown $DEF_UID:$DEF_GID $MNT ${TARGET}
touch ${TARGET}

case "${TYPE}" in
vfat|exfat)
mount ${DEVNAME} $MNT/${UUID} -o uid=$DEF_UID,gid=$DEF_GID,$MOUNT_OPTS,utf8,flush,discard || /bin/rmdir $MNT/${UUID}
if mount ${DEVNAME} ${TARGET} -o uid=$DEF_UID,gid=$DEF_GID,$MOUNT_OPTS,utf8,flush,discard; then
ln -s "${TARGET}" "$(get_path_fname ${UUID})"
else
/bin/rmdir ${TARGET}
fi
;;
# NTFS support has not been tested but it's being left to please the ego of an engineer!
ntfs)
mount ${DEVNAME} $MNT/${UUID} -o uid=$DEF_UID,gid=$DEF_GID,$MOUNT_OPTS,utf8 || /bin/rmdir $MNT/${UUID}
mount ${DEVNAME} ${TARGET} -o uid=$DEF_UID,gid=$DEF_GID,$MOUNT_OPTS,utf8 || /bin/rmdir ${TARGET}
;;
*)
mount ${DEVNAME} $MNT/${UUID} -o $MOUNT_OPTS || /bin/rmdir $MNT/${UUID}
if mount ${DEVNAME} ${TARGET} -o $MOUNT_OPTS; then
COMMON_DIR=${TARGET}/NemoMobileData
if ! [ -d "${COMMON_DIR}" ]; then
log "Creating common directory ${COMMON_DIR}"
if mkdir ${COMMON_DIR} && chmod 1777 ${COMMON_DIR}; then
ln -s "${COMMON_DIR}" "$(get_path_fname ${UUID})"
fi
elif ! $(su nemo -c "test -w ${COMMON_DIR}"); then
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This puts in the assertion that the system user is nemo, and that there's only one user.

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This is just a log record to know what happened (hard to check availability for each/unknown user), I can remove it.

log "${COMMON_DIR} is not writable by nemo user"
else
ln -s "${COMMON_DIR}" "$(get_path_fname ${UUID})"
fi
else
/bin/rmdir ${TARGET}
fi
;;
esac
test -d $MNT/${UUID} && touch $MNT/${UUID}
systemd-cat -t mount-sd /bin/echo "Finished ${ACTION}ing ${DEVNAME} of type ${TYPE} at $MNT/${UUID}"
test -d ${TARGET} && touch ${TARGET}
log "Finished ${ACTION}ing ${DEVNAME} of type ${TYPE} at ${TARGET}"

else
DIR=$(grep -w ${DEVNAME} /proc/mounts | cut -d \ -f 2)
if [ -n "${DIR}" ] ; then
if [ "${DIR##$MNT}" = "${DIR}" ]; then
systemd-cat -t mount-sd /bin/echo "${DEVNAME} mountpoint ${DIR} is not under ${MNT}, ignoring"
log "${DEVNAME} mountpoint ${DIR} is not under ${MNT}, ignoring"
exit 0
fi
umount $DIR || umount -l $DIR
systemd-cat -t mount-sd /bin/echo "Finished ${ACTION}ing ${DEVNAME} at ${DIR}"
PATH_FILE=$(get_path_fname "$(basename $DIR)")
echo "Removing path file $PATH_FILE"
[ -L $PATH_FILE ] && unlink $PATH_FILE
log "Finished ${ACTION}ing ${DEVNAME} at ${DIR}"
fi
fi