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//go:build linux || darwin || freebsd
package parse
import (
"fmt"
"os"
"path/filepath"
"github.com/containers/storage/pkg/unshare"
"github.com/opencontainers/cgroups/devices/config"
"github.com/opencontainers/runc/libcontainer/devices"
)
func DeviceFromPath(device string) ([]config.Device, error) {
src, dst, permissions, err := Device(device)
if err != nil {
return nil, err
}
if unshare.IsRootless() && src != dst {
return nil, fmt.Errorf("renaming device %s to %s is not supported in rootless containers", src, dst)
}
srcInfo, err := os.Stat(src)
if err != nil {
return nil, err
}
if !srcInfo.IsDir() {
devs := make([]config.Device, 0, 1)
dev, err := devices.DeviceFromPath(src, permissions)
if err != nil {
return nil, fmt.Errorf("%s is not a valid device: %w", src, err)
}
dev.Path = dst
devs = append(devs, *dev)
return devs, nil
}
// If source device is a directory
srcDevices, err := devices.GetDevices(src)
if err != nil {
return nil, fmt.Errorf("getting source devices from directory %s: %w", src, err)
}
devs := make([]config.Device, 0, len(srcDevices))
for _, d := range srcDevices {
d.Path = filepath.Join(dst, filepath.Base(d.Path))
d.Permissions = config.Permissions(permissions)
devs = append(devs, *d)
}
return devs, nil
}
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