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utils.go
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utils.go
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// SPDX-License-Identifier: BSD-3-Clause
// Copyright (c) 2023, Unikraft GmbH and The KraftKit Authors.
// Licensed under the BSD-3-Clause License (the "License").
// You may not use this file except in compliance with the License.
package pkg
import (
"context"
"fmt"
"path/filepath"
"kraftkit.sh/initrd"
"kraftkit.sh/unikraft"
"kraftkit.sh/unikraft/app"
)
// initProject sets up the project based on the provided context and
// options.
func (opts *Pkg) initProject(ctx context.Context) error {
var err error
popts := []app.ProjectOption{
app.WithProjectWorkdir(opts.workdir),
}
if len(opts.Kraftfile) > 0 {
popts = append(popts, app.WithProjectKraftfile(opts.Kraftfile))
} else {
popts = append(popts, app.WithProjectDefaultKraftfiles())
}
// Interpret the project directory
opts.project, err = app.NewProjectFromOptions(ctx, popts...)
if err != nil {
return err
}
return nil
}
// buildRootfs generates a rootfs based on the provided
func (opts *Pkg) buildRootfs(ctx context.Context) error {
if opts.Rootfs == "" {
if opts.project != nil && opts.project.Rootfs() != "" {
opts.Rootfs = opts.project.Rootfs()
} else {
return nil
}
}
ramfs, err := initrd.New(ctx, opts.Rootfs,
initrd.WithOutput(filepath.Join(opts.workdir, unikraft.BuildDir, initrd.DefaultInitramfsFileName)),
initrd.WithCacheDir(filepath.Join(opts.workdir, unikraft.VendorDir, "rootfs-cache")),
)
if err != nil {
return fmt.Errorf("could not prepare initramfs: %w", err)
}
opts.Rootfs, err = ramfs.Build(ctx)
if err != nil {
return err
}
return nil
}