Alex Goodman dcf051fbf1
fix(arch): apply the mtree bounds while streaming
Both caps were enforced against a fully buffered listing, so the peak cost
scaled with cataloger parallelism, which runs a goroutine per package. They now
apply as the stream flows: a limited reader for the byte cap and a counting
reader for the entry cap, which has to trip while the parser is still reading
since it materializes every entry before returning any of them.

Both limits are injectable so the boundary tests can be exact on both sides
without allocating their way up to the shipped 64MB. Each cap gets a listing
exactly at it, asserting the records parse whole rather than just that no error
came back, since quiet truncation is the failure a size check invites.

The byte limiter carries one byte of headroom, which is what makes an
overrunning listing distinguishable from one that simply ends at the cap.

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
2026-08-14 10:22:35 -04:00
2026-06-22 10:59:34 -04:00
2026-05-18 11:59:55 -04:00
2025-12-17 18:00:38 +00:00
2020-06-24 14:37:00 -04:00
2026-05-18 11:59:55 -04:00
2024-10-11 05:17:01 -04:00

Cute pink owl syft logo

Syft

A CLI tool and Go library for generating a Software Bill of Materials (SBOM) from container images and filesystems. Exceptional for vulnerability detection when used with a scanner like Grype.

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syft-demo

Features

Tip

New to Syft? Check out the Getting Started guide for a walkthrough!

Installation

The quickest way to get up and going:

curl -sSfL https://get.anchore.io/syft | sudo sh -s -- -b /usr/local/bin

Tip

See Installation docs for more ways to get Syft, including Homebrew, Docker, Scoop, Chocolatey, Nix, and more!

The basics

See the packages within a container image or directory:

# container image
syft alpine:latest

# directory
syft ./my-project

To get an SBOM, specify one or more output formats:

# SBOM to stdout
syft <image> -o cyclonedx-json

# Multiple SBOMs to files
syft <image> -o spdx-json=./spdx.json -o cyclonedx-json=./cdx.json

Tip

Check out the Getting Started guide to explore all of the capabilities and features.

Want to know all of the ins-and-outs of Syft? Check out the CLI docs, configuration docs, and JSON schema.

Contributing

We encourage users to help make these tools better by submitting issues when you find a bug or want a new feature. Check out our contributing overview and developer-specific documentation if you are interested in providing code contributions.

Syft development is sponsored by Anchore, and is released under the Apache-2.0 License. The Syft logo by Anchore is licensed under CC BY 4.0

For commercial support options with Syft or Grype, please contact Anchore.

Come talk to us!

The Syft Team holds regular community meetings online. All are welcome to join to bring topics for discussion.

Description
A CLI tool and Go library for generating a Software Bill of Materials (SBOM) from container images and filesystems.
Readme Apache-2.0 183 MiB
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