Adding `memfd` library as a dependency

Run this command in a terminal, in your project's directory:

cargo add memfd

To add it manually, edit your project's Cargo.toml file and add to the [dependencies] section:

memfd = "0.6.5"

The memfd library will be automatically available globally. Read the memfd library documentation.

Back to the crate overview.

Readme

memfd

A pure-Rust library to work with Linux memfd and seals.

It provides support for creating memfd objects on Linux and handling seals on them. This was first introduced in Linux kernel 3.17. For further details, see memfd_create(2) manpage.

Example

extern crate memfd;
use memfd::errors::Result;

fn new_sized_memfd() -> Result<memfd::Memfd> {
    // Create a sealable memfd.
    let opts = memfd::MemfdOptions::default().allow_sealing(true);
    let mfd = opts.create("sized-1K")?;

    // Resize to 1024B.
    mfd.as_file().set_len(1024)?;

    // Add seals to prevent further resizing.
    let mut seals = memfd::SealsHashSet::new();
    seals.insert(memfd::FileSeal::SealShrink);
    seals.insert(memfd::FileSeal::SealGrow);
    mfd.add_seals(&seals)?;

    // Prevent further sealing changes.
    mfd.add_seal(memfd::FileSeal::SealSeal);

    Ok(mfd)
}

Some more examples are available under examples.

License

Licensed under either of

MIT license - http://opensource.org/licenses/MIT
Apache License, Version 2.0 - http://www.apache.org/licenses/LICENSE-2.0

at your option.

Adding memfd library as a dependency

Adding `memfd` library as a dependency