rawfs

FUSE filesystem that shows RAW image files (eg Canon CR2) as their embedded JPEGs.

For Linux, Mac OS X, Synology or other Linux-based NAS devices.

Very useful if you have bunch of apps that you want to use on your photos that don't support RAW files properly.

You can easily mount your RAW photos directory to another location and browse it with a JPEG-only tool without noticing.

Unsupported files will be passed-through. No additional disk space is used when mounting. JPEG thumbnails are served directly from the original RAW files.

The original exif data is also added to the jpegs, so that autorotation, etc will work.

Limitations

• Filesystem is mostly read-only, with a few exceptions: delete, rename, move, mkdir, symlink. All other write operations will fail.
• Tested only with Canon CR2 files (Nikon NEF, Pentax PEF, etc need some fixes)

Download

You can download Linux 64-bit binaries and Synology ARM binaries from github releases.

For ARM-based Synology, you will need both libfuse.so.2 and rawfs-arm.

Usage

Mounting:

./rawfs photosdir mountpoint

Unmounting, either one of these:

fusermount -u mountpoint
sudo umount mountpoint
killall rawfs

Just extract the embedded jpeg:

./rawextract filename

Mounting on Synology NAS:

LD_LIBRARY_PATH=. ./rawfs-arm photosdir mountpoint -o allow_other

allow_other option will allow other users to see the mounted dir (by default in Fuse, only the user who ran the mount can see the files)

Build

On Ubuntu:

sudo apt-get install libfuse-dev

Then:

 ./buid.sh

Synology NAS

Steps to cross-compile:

1. Download Synology toolchain from http://sf.net/projects/dsgpl/files/ Get the right one for your DSM software version and CPU (my DS212j is Marvell 88F628x)

2. Download FUSE sources from http://sf.net/projects/fuse/ (the NAS already has the kernel module)

3. Extract both side-to-side into the same directory

4. To cross-compile FUSE (from the fuse dir):

      export CPPFLAGS=-I`pwd`/../arm-marvell-linux-gnueabi/include/
      export CC=`pwd`/../arm-marvell-linux-gnueabi/bin/arm-marvell-linux-gnueabi-gcc
      ./configure --host=arm-marvell-linux-gnueabi --prefix=`pwd`/target
      make
      make install

5. Clone rawfs side-by-side with fuse and the toolchain

6. ./build-arm.sh - this will get you a nice rawfs-arm binary! Unfortunately, I didn't manage to link it with -static, so you will also need libfuse.so.2

7. Now upload both rawfs-arm and libfuse.so.2 to your device and run as indicated in the Usage section above. Or use ./install-nas.sh example script for that.