|
| 1 | +//go:build !windows |
| 2 | +// +build !windows |
| 3 | + |
| 4 | +/* |
| 5 | + Copyright © 2021 The CDI Authors |
| 6 | +
|
| 7 | + Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | + you may not use this file except in compliance with the License. |
| 9 | + You may obtain a copy of the License at |
| 10 | +
|
| 11 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | +
|
| 13 | + Unless required by applicable law or agreed to in writing, software |
| 14 | + distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | + See the License for the specific language governing permissions and |
| 17 | + limitations under the License. |
| 18 | +*/ |
| 19 | + |
| 20 | +package cdi |
| 21 | + |
| 22 | +import ( |
| 23 | + runc "github.com/opencontainers/runc/libcontainer/devices" |
| 24 | + "github.com/pkg/errors" |
| 25 | +) |
| 26 | + |
| 27 | +// fillMissingInfo fills in missing mandatory attributes from the host device. |
| 28 | +func (d *DeviceNode) fillMissingInfo() error { |
| 29 | + if d.HostPath == "" { |
| 30 | + d.HostPath = d.Path |
| 31 | + } |
| 32 | + |
| 33 | + if d.Type != "" && (d.Major != 0 || d.Type == "p") { |
| 34 | + return nil |
| 35 | + } |
| 36 | + |
| 37 | + hostDev, err := runc.DeviceFromPath(d.HostPath, "rwm") |
| 38 | + if err != nil { |
| 39 | + return errors.Wrapf(err, "failed to stat CDI host device %q", d.HostPath) |
| 40 | + } |
| 41 | + |
| 42 | + if d.Type == "" { |
| 43 | + d.Type = string(hostDev.Type) |
| 44 | + } else { |
| 45 | + if d.Type != string(hostDev.Type) { |
| 46 | + return errors.Errorf("CDI device (%q, %q), host type mismatch (%s, %s)", |
| 47 | + d.Path, d.HostPath, d.Type, string(hostDev.Type)) |
| 48 | + } |
| 49 | + } |
| 50 | + if d.Major == 0 && d.Type != "p" { |
| 51 | + d.Major = hostDev.Major |
| 52 | + d.Minor = hostDev.Minor |
| 53 | + } |
| 54 | + |
| 55 | + return nil |
| 56 | +} |
0 commit comments