Julien Fontanet
3a74c71f1a
BREAKING: - removes `dist/` in the path of sub-modules - requires Node >=12
31 lines
1.1 KiB
JavaScript
31 lines
1.1 KiB
JavaScript
const { dirname, relative } = require('path')
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const { openVhd } = require('./openVhd')
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const { DISK_TYPES } = require('./_constants')
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const { Disposable } = require('promise-toolbox')
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module.exports = async function chain(parentHandler, parentPath, childHandler, childPath, force = false) {
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await Disposable.use(
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[openVhd(parentHandler, parentPath), openVhd(childHandler, childPath)],
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async ([parentVhd, childVhd]) => {
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await childVhd.readHeaderAndFooter()
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const { header, footer } = childVhd
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if (footer.diskType !== DISK_TYPES.DIFFERENCING) {
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if (!force) {
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throw new Error('cannot chain disk of type ' + footer.diskType)
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}
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footer.diskType = DISK_TYPES.DIFFERENCING
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}
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await childVhd.readBlockAllocationTable()
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const parentName = relative(dirname(childPath), parentPath)
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header.parentUuid = parentVhd.footer.uuid
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header.parentUnicodeName = parentName
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await childVhd.setUniqueParentLocator(parentName)
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await childVhd.writeHeader()
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await childVhd.writeFooter()
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}
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)
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}
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