11 releases (6 breaking)
0.6.2 | Nov 10, 2022 |
---|---|
0.6.1 | Jun 29, 2022 |
0.5.1 | Apr 13, 2022 |
0.5.0 | Mar 26, 2022 |
0.2.0 | Sep 5, 2018 |
#56 in Unix APIs
145,655 downloads per month
Used in 245 crates
(6 directly)
16KB
257 lines
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.
Dependencies
~1.2–6MB
~102K SLoC