- The plain list of "should be a supported filesystem" finally is fixed,
now it scans /proc to see if the kernel is able to mount it, if not it
modprobes it and as a failover tries to insmod it from the real rootfs
/lib/modules directory if it can.
- This should fix - en passant - the "drop to busybox shell if a ntfs
filesystem is found while scanning for persistence media" bug as well.
is_supported_fs ()
{
- # FIXME: do something better like the scan of supported filesystems
fstype="${1}"
- case ${fstype} in
- vfat|iso9660|udf|ext2|ext3|ntfs|jffs2)
+ # Try to look if it is already supported by the kernel
+ if grep -q ${fstype} /proc/filesystems
+ then
return 0
- ;;
- esac
+ else
+ # Then try to add support for it the gentle way using the initramfs capabilities
+ modprobe ${fstype}
+ if grep -q ${fstype} /proc/filesystems
+ then
+ return 0
+ # Then try the hard way if /root is already reachable
+ else
+ kmodule="/root/lib/modules/`uname -r`/${fstype}/${fstype}.ko"
+ if [ -e "${kmodule}" ]
+ then
+ insmod "${kmodule}"
+ if grep -q ${fstype} /proc/filesystems
+ then
+ return 0
+ fi
+ fi
+ fi
+ fi
return 1
}