org.osbuild.truncate

Create, shrink or extend a file.

The file specified via filename is extended or shrunk to the new size specified via the size parameter. If the file exists and the new size is smaller, data past the new size will be discarded. If the file exists and the new size is bigger, it will be extended by filling the new area with zeros. If the file does not yet exist it will be created. NB: In general file systems will not actually reserve the full requested amount but instead a "sparse file" will be created. Therefore the actual disk usage will be different from the "apparent" size of the file, which is reflected by "size" (the apparent size) vs. "blocks" (the actual used space) fields shown in the stat call.

Schema 1

{
  "additionalProperties": false,
  "required": [
    "filename",
    "size"
  ],
  "properties": {
    "filename": {
      "description": "Image filename",
      "type": "string"
    },
    "size": {
      "description": "New desired size",
      "type": "string"
    }
  }
}

Schema 2

{}