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43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
"use strict";
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const Promise = require("bluebird");
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const execAll = require("execall");
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const execBinary = require("../exec-binary");
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function createNamespaceParser() {
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return {
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supportsStreams: false,
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parse: function (input) {
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return {
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namespaces: execAll(/^\[\s*[0-9]+\]:(?:(0)|0x([0-9A-F]+))$/gm, input)
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.map((match) => {
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let [ idLiteral, idHex ] = match.sub;
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if (idLiteral != null) {
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/* NOTE: This is a special case for when the value is exactly 0 - and maybe there are others too, hence still doing a parseInt, so we can easily change the regex later if needed:
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https://stackoverflow.com/questions/11922876/what-does-a-hash-sign-do-in-printf#comment15879638_11922887
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https://github.com/linux-nvme/nvme-cli/blob/f9ebefe27b0596006d76d58f3219a9fc12e88664/nvme.c#L979
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*/
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return parseInt(idLiteral);
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} else {
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return parseInt(idHex, 16);
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}
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})
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};
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}
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};
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}
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module.exports = {
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listNamespaces: function ({ devicePath }) {
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return Promise.try(() => {
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return execBinary("nvme", [ "list-ns", devicePath ])
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.asRoot()
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.expectOnStdout(createNamespaceParser())
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.execute();
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}).then((output) => {
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return output.result.namespaces;
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});
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}
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};
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