runc version 0.0.8 does not comply with version 0.3.0 of the spec for the "devices" block

[sajones]

Per https://github.com/opencontainers/specs/blob/master/config-linux.md#devices I should be able to specify "type" with the same letter codes as mknod, however runc still expects to parse an integer for that field.

According to the spec version 0.3.0 this definition should work:

"devices": [
    {
        "path": "/dev/sde",
        "type": "b",
        "major": 8,
        "minor": 64,
        "fileMode": 660,
        "uid": 0,
        "gid": 6
    }
]

However when I try to start a container I get this error:
json: cannot unmarshal string into Go value of type int32

This definition does work:

"devices": [
    {
        "path": "/dev/sde",
        "major": 8,
        "minor": 64,
        "type": 98,
        "uid": 0,
        "gid": 6,
        "fileMode": 660,
        "permissions": "rwm"
    }
]

[mikebrow]

Looks like type rune is not being processed cleanly by the json helpers. Should probably be defined as a Type *rune anyway vs Type rune. FYI device is defined in the spec and pulled over via godeps... so the fix will likely be to opencontainers/specs/config_linux.go

[crosbymichael]

it would need to be a string and not rune in the spec types