Reworked the automount script

You have to tweak mount options on a per filesystem basis so that the
permissions set on the mount point allow the mediascanner and
mediaplayer to read files.

Bug-AGL: SPEC-545

Change-Id: I2579bf4b8be3d0bc05f08f762bb751d4f54651a8
Signed-off-by: Loïc Collignon <loic.collignon@iot.bzh>

1 files changed, 84 insertions, 10 deletions

diff --git a/meta-agl-profile-core/recipes-support/udisks/files/automount.sh b/meta-agl-profile-core/recipes-support/udisks/files/automount.sh
index 90a510c96..236791910 100755
--- a/meta-agl-profile-core/recipes-support/udisks/files/automount.sh
+++ b/meta-agl-profile-core/recipes-support/udisks/files/automount.sh
@@ -1,19 +1,93 @@
 #!/bin/sh
 
-pathtoname() {
-	udevadm info -p /sys/"$1" | awk -v FS== '/DEVNAME/ {print $2}'
+MOUNT_OPTIONS_DEFAULT="ro,noexec"
+MOUNT_OPTIONS_VFAT="umask=0022"
+MOUNT_OPTIONS_EXT=""
+MOUNT_OPTIONS_NTFS=""
+MOUNT_OPTIONS_ISO9660=""
+
+VERBOSE=false
+
+# Source a configuration file that can override mount options if exists
+[ -f /etc/automount.conf ] && . /etc/automount.conf
+
+mount_device() {
+	MOUNT_OPTIONS=""
+	FSTYPE="$( udevadm info "${1}" "${2}" | awk -v FS== '/ID_FS_TYPE/ {print $2}' )"
+	DEVNAME="$( udevadm info "${1}" "${2}" | awk -v FS== '/DEVNAME/ {print $2}' )"
+	case $FSTYPE in
+		vfat)
+			MOUNT_OPTIONS="${MOUNT_OPTIONS_VFAT}"
+			;;
+		ext[2-4])
+			MOUNT_OPTIONS="${MOUNT_OPTIONS_EXT}"
+			;;
+		ntfs)
+			MOUNT_OPTIONS="${MOUNT_OPTIONS_NTFS}"
+			;;
+		iso9660)
+			MOUNT_OPTIONS="${MOUNT_OPTIONS_ISO9660}"
+			;;
+		"")
+			if $VERBOSE; then
+				echo "[INFO][${DEVNAME}] Not a partition with a filesystem!"
+			fi
+			return
+			;;
+		*)
+			echo "[WARNING][${DEVNAME}] The filesystem '${FSTYPE}' is not supported!"
+			return
+			;;
+	esac
+
+	if [ -n "${MOUNT_OPTIONS_DEFAULT}" ]; then
+		if [ -z "${MOUNT_OPTIONS}" ]; then
+			MOUNT_OPTIONS="${MOUNT_OPTIONS_DEFAULT}"
+		else
+			MOUNT_OPTIONS="${MOUNT_OPTIONS_DEFAULT},${MOUNT_OPTIONS}"
+		fi
+	fi
+	if $VERBOSE; then
+		echo "[INFO][${DEVNAME}] Mounting a ${FSTYPE}'s filesystem with options: ${MOUNT_OPTIONS}"
+	fi
+
+	if command -v udisksctl > /dev/null 2>&1; then
+		if [ -n "${MOUNT_OPTIONS}" ]; then
+			MOUNT_OPTIONS="-o ${MOUNT_OPTIONS}"
+		fi
+		udisksctl mount -t "${FSTYPE}" -b "${DEVNAME}" ${MOUNT_OPTIONS}
+	elif command -v udisks >/dev/null 2>&1; then
+		if [ -n "${MOUNT_OPTIONS}" ]; then
+			MOUNT_OPTIONS="--mount-options ${MOUNT_OPTIONS}"
+		fi
+		udisks --mount-fstype "${FSTYPE}" --mount "${DEVNAME}" ${MOUNT_OPTIONS}
+	else
+		echo "[ERROR] Unable to find binary for mounting ${DEVNAME}" >&2
+		return
+	fi
+	if [ "$?" -ne "0" ]; then
+		echo "[ERROR] Failed to mount the device ${DEVNAME} of type ${FSTYPE} with options ${MOUNT_OPTIONS}" >&2
+	fi
 }
 
-MOUNT_OPTIONS="ro"
+# At startup, remove empty directories that may exists
+rmdir /media/* > /dev/null 2>&1
 
-rmdir /media/* &> /dev/null || true
-for DEVNAME in $(udisks --enumerate-device-files|grep -e sd[a-z]); do
-	udisks --mount-options $MOUNT_OPTIONS --mount $DEVNAME
+# Mount already plugged devices
+for DEVICE in $( lsblk -dn | cut -d' ' -f1 ); do
+	REMOVABLE=$( cat "/sys/block/${DEVICE}/removable" )
+	if [ "${REMOVABLE}" -eq "1" ]; then
+		for PART in "/dev/${DEVICE}"*; do
+			mount_device -n "${PART}"
+		done
+	fi
 done
 
-stdbuf -oL -- udevadm monitor --udev -s block | while read -r -- _ _ event devpath _; do
-	if [ "$event" = add ]; then
-		DEVNAME=$(pathtoname "$devpath")
-		udisks --mount-options $MOUNT_OPTIONS --mount $DEVNAME
+# Wait for plug events and mount devices
+stdbuf -oL -- udevadm monitor --udev -s block |
+while read -r -- _ _ EVENT DEVPATH _
+do
+	if [ "${EVENT}" = "add" ]; then
+		mount_device -p "/sys/${DEVPATH}"
 	fi
 done