squashfs

This is a read-only implementation of squashfs initially meant to be use with go-fuse.

Since then, golang added io/fs and fuse support was moved to a fuse tag, which means this module can be either used with go-fuse, or as a simple io/fs-compliant squashfs file reader.

Tags

The following tags can be specified on build to enable/disable features:

• fuse adds methods to the Inode object to interact with fuse
• xz adds a dependency on xz to support xz compressed files
• zstd adds a dependency on zstd to support zstd compressed files

Example use

sqfs, err := squashfs.Open("file.squashfs")
if err != nil {
	return err
}
defer sqfs.Close()
// sqfs can be used as a regular fs.FS
data, err := fs.ReadFile(sqfs, "dir/file.txt")
// or:
http.Handle("/", http.FileServer(sqfs))
// etc...

You can find more looking at the test file.

File format

Some documentation is available online on SquashFS.

• https://dr-emann.github.io/squashfs/
• https://dr-emann.github.io/squashfs/squashfs.html

TODO

Access to directories do not currently use indexes and can be slow for random file accesses in very large directories.