mirror of
https://github.com/containers/podman.git
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a55e2a00fc
Allows users to specify a readonly rootfs with :O, in exchange podman will create a writable overlay. bump builah to v1.22.1-0.20210823173221-da2b428c56ce [NO TESTS NEEDED] Signed-off-by: flouthoc <flouthoc.git@gmail.com>
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
// +build linux darwin
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package parse
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import (
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"os"
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"path/filepath"
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"github.com/containers/buildah/define"
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"github.com/containers/storage/pkg/unshare"
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"github.com/opencontainers/runc/libcontainer/devices"
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"github.com/pkg/errors"
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)
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func DeviceFromPath(device string) (define.ContainerDevices, error) {
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var devs define.ContainerDevices
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src, dst, permissions, err := Device(device)
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if err != nil {
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return nil, err
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}
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if unshare.IsRootless() && src != dst {
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return nil, errors.Errorf("Renaming device %s to %s is not supported in rootless containers", src, dst)
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}
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srcInfo, err := os.Stat(src)
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if err != nil {
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return nil, errors.Wrapf(err, "error getting info of source device %s", src)
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}
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if !srcInfo.IsDir() {
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dev, err := devices.DeviceFromPath(src, permissions)
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if err != nil {
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return nil, errors.Wrapf(err, "%s is not a valid device", src)
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}
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dev.Path = dst
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devs = append(devs, *dev)
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return devs, nil
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}
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// If source device is a directory
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srcDevices, err := devices.GetDevices(src)
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if err != nil {
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return nil, errors.Wrapf(err, "error getting source devices from directory %s", src)
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}
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for _, d := range srcDevices {
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d.Path = filepath.Join(dst, filepath.Base(d.Path))
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d.Permissions = devices.Permissions(permissions)
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devs = append(devs, *d)
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}
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return devs, nil
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}
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