node/test/parallel/test-fs-open-mode-mask.js
Joyee Cheung cf72301545
lib: unmask mode_t values with 0o777
This commit allows permission bits higher than 0o777 to go through
the API (e.g. `S_ISVTX`=`0o1000`, `S_ISGID`=`0o2000`,
`S_ISUID`=`0o4000`).

Also documents that these bits are not exposed through `fs.constants`
and their behaviors are platform-specific, so the users need to
use them on their own risk.

PR-URL: https://github.com/nodejs/node/pull/20975
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
2018-06-01 11:12:10 +02:00

49 lines
1.2 KiB
JavaScript

'use strict';
// This tests that the lower bits of mode > 0o777 still works in fs.open().
const common = require('../common');
const assert = require('assert');
const path = require('path');
const fs = require('fs');
let mode;
if (common.isWindows) {
mode = 0o444;
} else {
mode = 0o644;
}
const maskToIgnore = 0o10000;
const tmpdir = require('../common/tmpdir');
tmpdir.refresh();
function test(mode, asString) {
const suffix = asString ? 'str' : 'num';
const input = asString ?
(mode | maskToIgnore).toString(8) : (mode | maskToIgnore);
{
const file = path.join(tmpdir.path, `openSync-${suffix}.txt`);
const fd = fs.openSync(file, 'w+', input);
assert.strictEqual(fs.fstatSync(fd).mode & 0o777, mode);
fs.closeSync(fd);
assert.strictEqual(fs.statSync(file).mode & 0o777, mode);
}
{
const file = path.join(tmpdir.path, `open-${suffix}.txt`);
fs.open(file, 'w+', input, common.mustCall((err, fd) => {
assert.ifError(err);
assert.strictEqual(fs.fstatSync(fd).mode & 0o777, mode);
fs.closeSync(fd);
assert.strictEqual(fs.statSync(file).mode & 0o777, mode);
}));
}
}
test(mode, true);
test(mode, false);