SSFS: File System in User Space

This was a project I built for my Unix System Programming on Unix’s Filesystem in USEerspace (FUSE), a software interface that lets you build your own custom filesystem implementations. I used the C language to create an implementation of a 2-level filesystem that organized all its files in folders according to the file extention. My implementation also displays each file name as its full directory location.

C interface for FUSE

struct fuse_operations ss_ops = {
    .getattr = ss_getattr,
    .readdir = ss_readdir,
    .open = ss_open,
    .read = ss_read,
    .write = ss_write,
    .unlink = ss_unlink,
    .opendir = ss_opendir,
    .rmdir = ss_rmdir,
    .truncate = ss_truncate,
    .ftruncate = ss_ftruncate,
}

To use the filesystem, you run the executable with a mounting directory and a directory to scan. Then then you can interact with the new mounted folder just as you would with any other folder via a GUI or CLI. Functions like ls, cat, grep, etc. use implementations that is specified by FUSE to interact with the folder.

Command line usage GUI usage

Read more on my blog post.