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Matteo Collina
c9562ddb82
Adds the node:vfs builtin module with VirtualFileSystem and provider classes. No integration with fs, modules, or SEA. Assisted-by: Claude-Opus4.7 Signed-off-by: Matteo Collina <hello@matteocollina.com> PR-URL: https://github.com/nodejs/node/pull/63115 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Paolo Insogna <paolo@cowtech.it> Reviewed-By: Robert Nagy <ronagy@icloud.com> Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
42 lines
1.5 KiB
JavaScript
42 lines
1.5 KiB
JavaScript
// Flags: --experimental-vfs
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'use strict';
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// access / accessSync honour the R_OK / W_OK / X_OK / F_OK mode bits and
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// throw EACCES when the file's permission bits don't allow the request.
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const common = require('../common');
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const assert = require('assert');
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const fs = require('fs');
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const vfs = require('node:vfs');
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const { R_OK, W_OK, X_OK } = fs.constants;
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const myVfs = vfs.create();
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// No read permission (mode 0o222 → owner has W only)
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myVfs.writeFileSync('/no-r.txt', 'x');
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myVfs.chmodSync('/no-r.txt', 0o222);
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assert.throws(() => myVfs.accessSync('/no-r.txt', R_OK), { code: 'EACCES' });
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assert.rejects(myVfs.promises.access('/no-r.txt', R_OK),
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{ code: 'EACCES' }).then(common.mustCall());
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// No write permission (mode 0o444 → owner has R only)
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myVfs.writeFileSync('/no-w.txt', 'x');
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myVfs.chmodSync('/no-w.txt', 0o444);
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assert.throws(() => myVfs.accessSync('/no-w.txt', W_OK), { code: 'EACCES' });
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assert.rejects(myVfs.promises.access('/no-w.txt', W_OK),
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{ code: 'EACCES' }).then(common.mustCall());
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// No execute permission (mode 0o644)
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myVfs.writeFileSync('/no-x.txt', 'x');
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myVfs.chmodSync('/no-x.txt', 0o644);
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assert.throws(() => myVfs.accessSync('/no-x.txt', X_OK), { code: 'EACCES' });
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assert.rejects(myVfs.promises.access('/no-x.txt', X_OK),
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{ code: 'EACCES' }).then(common.mustCall());
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// F_OK (mode 0) is an existence-only check and does not require permission
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myVfs.accessSync('/no-r.txt', 0);
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// Mode passed as null also exits early (existence-only)
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myVfs.accessSync('/no-r.txt', null);
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