talos/pkg/imager/utils/loopback.go
Andrey Smirnov 87fe8f1a2a
feat: implement image generation profiles
Support full configuration for image generation, including image
outputs, support most features (where applicable) for all image output
types, unify image generation process.

Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
2023-08-02 19:13:44 +04:00

31 lines
887 B
Go

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package utils
import (
"fmt"
"strings"
"github.com/siderolabs/go-cmd/pkg/cmd"
)
// Loattach attaches a loopback device by inoking the `losetup` command.
func Loattach(img string) (dev string, err error) {
if dev, err = cmd.Run("losetup", "--find", "--partscan", "--nooverlap", "--show", img); err != nil {
return "", fmt.Errorf("failed to setup loopback device: %w", err)
}
return strings.TrimSuffix(dev, "\n"), nil
}
// Lodetach detaches a loopback device by inoking the `losetup` command.
func Lodetach(img string) (err error) {
if _, err = cmd.Run("losetup", "-d", img); err != nil {
return fmt.Errorf("failed to detach loopback device: %w", err)
}
return nil
}