anish7877/quiver

How anish7877/quiver works

Quiver is a rootless OCI-compatible container engine and CLI. Its primary workflow starts at the CLI, which dispatches container requests to the runtime; the runtime prepares OCI configuration and Linux isolation, runs the container, and persists state for lifecycle and inspection commands. Separate branches build and manage images. The README documents broader capabilities than the sampled excerpts; those unsampled subsystems are represented only where the tree supports a source path, and their internal wiring is not asserted.

Main entry points: container_runtime.cpp Container runtime · command_line_handler.cpp Command handler · build_executor.cpp Image build executor · database_command_queue.cpp Database command queue

Components 28

CLI and lifecycle

Application entry src/main.cpp
Command handler src/command_line_handler.cpp

Container runtime

Container runtime src/container_runtime.cpp
OCI spec generator src/spec_generator.cpp
Mount handling src/mount.cpp
Capabilities and seccomp src/caps_manager.cpp
Seccomp profiles src/seccomp_profile_manager.cpp
Rootless networking src/pasta_network.cpp
Interactive sessions src/pty_session_manager.cpp

State and inspection

Database command queue src/database_command_queue.cpp
Database job processor src/database_job_processor.cpp
Container metadata src/container_db_manager.cpp
Image metadata src/image_db_manager.cpp
Container monitoring src/container_monitor.cpp

Images and builds

Image manager src/image_manager.cpp
Image build executor image_build_system/build_executor.cpp
Buildfile parser image_build_system/build_file_parser.cpp
Build graph image_build_system/graph_builder.cpp
Layer cache image_build_system/layer_cache_manager.cpp

Host integrations

Cgroup selection src/cgroups_manager_creator.cpp
Raw cgroups src/raw_cgroups_manager.cpp
Systemd cgroups src/systemd_cgroups_manager.cpp

Other components

CLI user
systemd user session
pasta service
Linux kernel
OCI registry
Rootless BuildKit

Connections 36

CLI user → Application entry: invokes
Application entry → Command handler: dispatches
Command handler → Container runtime: requests lifecycle
Container runtime → OCI spec generator: generates OCI spec
Container runtime → Mount handling: configures mounts
Container runtime → Capabilities and seccomp: configures capabilities
Container runtime → Seccomp profiles: loads profiles
Container runtime → Rootless networking: configures networking
Container runtime → Interactive sessions: manages sessions
Container runtime → Cgroup selection: selects cgroups
Cgroup selection → Raw cgroups: selects implementation
Cgroup selection → Systemd cgroups: selects implementation
Systemd cgroups → systemd user session: sets properties
Raw cgroups → Linux kernel: writes cgroup files
OCI spec generator → Linux kernel: describes isolation
Mount handling → Linux kernel: mounts filesystems
Capabilities and seccomp → Linux kernel: sets capabilities
Seccomp profiles → Linux kernel: sets seccomp
Rootless networking → pasta service: starts networking
Container runtime → Container metadata: persists container state
Command handler → Container metadata: queries container state
Command handler → Container monitoring: requests inspection
Container metadata → Database command queue: enqueues jobs
Image metadata → Database command queue: enqueues jobs
Database command queue → Database job processor: dispatches jobs
Database job processor → Container metadata: serves container jobs
Database job processor → Image metadata: serves image jobs
Command handler → Image manager: requests image actions
Image manager → OCI registry: pulls or pushes
Image manager → Image metadata: updates image metadata
Command handler → Image build executor: requests image build
Image build executor → Buildfile parser: parses buildfile
Image build executor → Build graph: builds dependency graph
Image build executor → Layer cache: looks up layers
Image build executor → Rootless BuildKit: uses build backend
Layer cache → Database command queue: enqueues cache jobs

More C++ diagrams: simplefoc/arduino-foc · tum-vision/lsd_slam · tsoding/nob.h · notrexed/hookshot · mailcore/mailcore2

Drawn by GitDiagram on September 28, 2026 from the repository's file tree, README and source files. Read as Markdown ·