mirror of
https://github.com/balena-io/balena-cli.git
synced 2024-12-23 23:42:24 +00:00
109 lines
2.7 KiB
CoffeeScript
109 lines
2.7 KiB
CoffeeScript
Promise = require('bluebird')
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exports.QEMU_VERSION = QEMU_VERSION = 'v3.0.0+resin'
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exports.QEMU_BIN_NAME = QEMU_BIN_NAME = 'qemu-execve'
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exports.installQemuIfNeeded = Promise.method (emulated, logger, arch) ->
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return false if not (emulated and platformNeedsQemu())
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hasQemu(arch)
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.then (present) ->
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if !present
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logger.logInfo("Installing qemu for #{arch} emulation...")
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installQemu(arch)
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.return(true)
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exports.qemuPathInContext = (context) ->
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path = require('path')
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binDir = path.join(context, '.balena')
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binPath = path.join(binDir, QEMU_BIN_NAME)
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path.relative(context, binPath)
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exports.copyQemu = (context, arch) ->
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path = require('path')
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fs = require('mz/fs')
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# Create a hidden directory in the build context, containing qemu
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binDir = path.join(context, '.balena')
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binPath = path.join(binDir, QEMU_BIN_NAME)
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Promise.resolve(fs.mkdir(binDir))
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.catch(code: 'EEXIST', ->)
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.then ->
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getQemuPath(arch)
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.then (qemu) ->
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new Promise (resolve, reject) ->
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read = fs.createReadStream(qemu)
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write = fs.createWriteStream(binPath)
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read
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.on('error', reject)
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.pipe(write)
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.on('error', reject)
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.on('finish', resolve)
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.then ->
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fs.chmod(binPath, '755')
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.then ->
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path.relative(context, binPath)
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hasQemu = (arch) ->
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fs = require('mz/fs')
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getQemuPath(arch)
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.then(fs.stat)
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.return(true)
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.catchReturn(false)
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getQemuPath = (arch) ->
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balena = require('balena-sdk').fromSharedOptions()
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path = require('path')
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fs = require('mz/fs')
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balena.settings.get('binDirectory')
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.then (binDir) ->
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Promise.resolve(fs.mkdir(binDir))
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.catch(code: 'EEXIST', ->)
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.then ->
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path.join(binDir, "#{QEMU_BIN_NAME}-#{arch}")
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platformNeedsQemu = ->
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os = require('os')
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os.platform() == 'linux'
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installQemu = (arch) ->
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request = require('request')
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fs = require('fs')
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zlib = require('zlib')
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tar = require('tar-stream')
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getQemuPath(arch)
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.then (qemuPath) ->
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new Promise (resolve, reject) ->
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installStream = fs.createWriteStream(qemuPath)
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qemuArch = balenaArchToQemuArch(arch)
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downloadArchiveName = "qemu-3.0.0+resin-#{qemuArch}.tar.gz"
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qemuUrl = "https://github.com/balena-io/qemu/releases/download/#{QEMU_VERSION}/#{downloadArchiveName}"
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extract = tar.extract()
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extract.on 'entry', (header, stream, next) ->
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stream.on('end', next)
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if header.name.includes("qemu-#{qemuArch}-static")
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stream.pipe(installStream)
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else
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stream.resume()
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request(qemuUrl)
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.on('error', reject)
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.pipe(zlib.createGunzip())
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.on('error', reject)
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.pipe(extract)
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.on('error', reject)
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.on 'finish', ->
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fs.chmodSync(qemuPath, '755')
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resolve()
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balenaArchToQemuArch = (arch) ->
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switch arch
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when 'armv7hf', 'rpi' then 'arm'
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else arch
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