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Add vsock-backed SSH session reminders

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Remind users when a VM is still running after 	hanger vm ssh exits instead of silently dropping them back to the host shell.\n\nAttach a Firecracker vsock device to each VM, persist the host vsock path/CID,\nadd a new guest-side banger-vsock-pingd responder to the runtime bundle and both\nimage-build paths, and expose a vm.ping RPC that the CLI and TUI call after SSH\nreturns. Doctor and start/build preflight now validate the helper plus\n/dev/vhost-vsock so the feature fails early and clearly.\n\nValidated with go mod tidy, bash -n customize.sh, git diff --check, make build,\nand GOCACHE=/tmp/banger-gocache go test ./... outside the sandbox because the\ndaemon tests need real Unix/UDP sockets. Rebuild the image/rootfs used for new\nVMs so the guest ping service is present.
This commit is contained in:
Thales Maciel 2026-03-18 20:14:51 -03:00
parent 4930d82cb9
commit 08ef706e3f
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GPG key ID: 33112E6833C34679
31 changed files with 912 additions and 75 deletions
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9
Makefile
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@ -12,8 +12,9 @@ RUNTIME_MANIFEST ?= runtime-bundle.toml
RUNTIME_SOURCE_DIR ?= runtime
RUNTIME_ARCHIVE ?= dist/banger-runtime.tar.gz
BINARIES := banger bangerd
RUNTIME_HELPERS := $(RUNTIME_SOURCE_DIR)/banger-vsock-pingd
GO_SOURCES := $(shell find cmd internal -type f -name '*.go' | sort)
RUNTIME_EXECUTABLES := firecracker customize.sh packages.sh namegen
RUNTIME_EXECUTABLES := firecracker customize.sh packages.sh namegen banger-vsock-pingd
RUNTIME_DATA_FILES := packages.apt id_ed25519 rootfs-docker.ext4
RUNTIME_OPTIONAL_DATA_FILES := rootfs.ext4 bundle.json
RUNTIME_BOOT_FILES := wtf/root/boot/vmlinux-6.8.0-94-generic wtf/root/boot/initrd.img-6.8.0-94-generic
@ -36,7 +37,7 @@ help:
' make clean Remove built Go binaries' \
' make rootfs Rebuild the source-checkout default rootfs image in ./runtime'
build: $(BINARIES)
build: $(BINARIES) $(RUNTIME_HELPERS)
banger: $(GO_SOURCES) go.mod go.sum
$(GO) build -o ./banger ./cmd/banger
@ -44,6 +45,10 @@ banger: $(GO_SOURCES) go.mod go.sum
bangerd: $(GO_SOURCES) go.mod go.sum
$(GO) build -o ./bangerd ./cmd/bangerd
$(RUNTIME_SOURCE_DIR)/banger-vsock-pingd: $(GO_SOURCES) go.mod go.sum
mkdir -p "$(RUNTIME_SOURCE_DIR)"
CGO_ENABLED=0 GOOS=linux GOARCH=amd64 $(GO) build -o "$(RUNTIME_SOURCE_DIR)/banger-vsock-pingd" ./cmd/banger-vsock-pingd
test:
$(GO) test ./...