Sha256: 5918764af6b11d3e2f3f3b3b6f6149b7551b91d09aa2df00e8ab8a8fc4a2cb94
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Versions: 36
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Contents
//! 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.
//!
//! ```rust
//! use memfd;
//!
//! fn new_sized_memfd() -> Result<memfd::Memfd, Box<dyn std::error::Error>> {
//! // 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.
//! mfd.add_seals(&[
//! memfd::FileSeal::SealShrink,
//! memfd::FileSeal::SealGrow
//! ])?;
//!
//! // Prevent further sealing changes.
//! mfd.add_seal(memfd::FileSeal::SealSeal)?;
//!
//! Ok(mfd)
//! }
//! ```
#![deny(
missing_docs,
broken_intra_doc_links,
clippy::all,
unreachable_pub,
unused
)]
#![cfg_attr(docsrs, feature(doc_cfg))]
#![cfg_attr(docsrs, doc(cfg(any(target_os = "android", target_os = "linux"))))]
// No-op crate on platforms that do not support memfd_create, instead of failing to link, or at
// runtime.
#![cfg(any(target_os = "android", target_os = "linux"))]
mod errors;
mod memfd;
mod sealing;
pub use crate::{
errors::Error,
memfd::{HugetlbSize, Memfd, MemfdOptions},
sealing::{FileSeal, SealsHashSet},
};
Version data entries
36 entries across 36 versions & 1 rubygems