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Move avoidable daemon shell-outs into Go

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Reduce the control plane's dependency on helper scripts while keeping the hard Linux integration points in the approved shell-out layer.

Replace the bash-driven image build path with a native Go builder that clones and optionally resizes the rootfs, boots a temporary Firecracker VM, provisions the guest over SSH, installs packages and modules, and preserves the package-manifest sidecar.

Also replace a few small convenience shell-outs with Go helpers: read process stats from /proc, use os.Truncate for ext4 image growth, add file-clone and normalized-line helpers, drop the sh -c work-disk flattening path, and launch Firecracker via a direct sudo command.

Add tests for the new SSH/archive and system helpers, plus a policy test that keeps os/exec imports confined to cli/firecracker/system. Update the docs to describe customize.sh as a manual helper rather than the daemon's image-build backend.

Validated with go mod tidy, go test ./..., and make build.
This commit is contained in:
Thales Maciel 2026-03-17 17:13:07 -03:00
parent 0a0b0b617b
commit 942d242c03
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GPG key ID: 33112E6833C34679
17 changed files with 936 additions and 145 deletions
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3
go.mod
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@ -12,6 +12,8 @@ require (
github.com/pelletier/go-toml v1.9.5
github.com/sirupsen/logrus v1.9.4
github.com/spf13/cobra v1.8.1
golang.org/x/crypto v0.46.0
golang.org/x/sys v0.39.0
modernc.org/sqlite v1.38.2
)
@ -63,7 +65,6 @@ require (
golang.org/x/mod v0.31.0 // indirect
golang.org/x/net v0.48.0 // indirect
golang.org/x/sync v0.19.0 // indirect
golang.org/x/sys v0.39.0 // indirect
golang.org/x/term v0.38.0 // indirect
golang.org/x/text v0.32.0 // indirect
golang.org/x/tools v0.40.0 // indirect