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36 lines
1.0 KiB
JavaScript
36 lines
1.0 KiB
JavaScript
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'use strict'
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var path = require('path')
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var fs = require('fs')
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var inflight = require('inflight')
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var accessError = require('./access-error.js')
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var andIgnoreErrors = require('./and-ignore-errors.js')
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var isFsAccessAvailable = require('./is-fs-access-available.js')
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if (isFsAccessAvailable) {
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module.exports = fsAccessImplementation
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} else {
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module.exports = fsOpenImplementation
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}
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// exposed only for testing purposes
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module.exports.fsAccessImplementation = fsAccessImplementation
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module.exports.fsOpenImplementation = fsOpenImplementation
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function fsAccessImplementation (dir, done) {
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done = inflight('writable:' + dir, done)
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if (!done) return
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fs.access(dir, fs.W_OK, done)
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}
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function fsOpenImplementation (dir, done) {
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done = inflight('writable:' + dir, done)
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if (!done) return
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var tmp = path.join(dir, '.npm.check.permissions')
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fs.open(tmp, 'w', function (er, fd) {
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if (er) return done(accessError(dir, er))
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fs.close(fd, function () {
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fs.unlink(tmp, andIgnoreErrors(done))
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})
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})
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}
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