feat(node): implement fs.statfs() (#22862)

1 files changed, 56 insertions, 0 deletions

diff --git a/ext/node/polyfills/_fs/_fs_statfs.js b/ext/node/polyfills/_fs/_fs_statfs.js
new file mode 100644
index 000000000..51da1ed68
--- /dev/null
+++ b/ext/node/polyfills/_fs/_fs_statfs.js
@@ -0,0 +1,56 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+import { BigInt } from "ext:deno_node/internal/primordials.mjs";
+import { op_node_statfs } from "ext:core/ops";
+import { promisify } from "ext:deno_node/internal/util.mjs";
+
+class StatFs {
+  type;
+  bsize;
+  blocks;
+  bfree;
+  bavail;
+  files;
+  ffree;
+  constructor(type, bsize, blocks, bfree, bavail, files, ffree) {
+    this.type = type;
+    this.bsize = bsize;
+    this.blocks = blocks;
+    this.bfree = bfree;
+    this.bavail = bavail;
+    this.files = files;
+    this.ffree = ffree;
+  }
+}
+
+export function statfs(path, options, callback) {
+  if (typeof options === "function") {
+    callback = options;
+    options = {};
+  }
+  try {
+    const res = statfsSync(path, options);
+    callback(null, res);
+  } catch (err) {
+    callback(err, null);
+  }
+}
+
+export function statfsSync(path, options) {
+  const bigint = typeof options?.bigint === "boolean" ? options.bigint : false;
+  const statFs = op_node_statfs(
+    path,
+    bigint,
+  );
+  return new StatFs(
+    bigint ? BigInt(statFs.type) : statFs.type,
+    bigint ? BigInt(statFs.bsize) : statFs.bsize,
+    bigint ? BigInt(statFs.blocks) : statFs.blocks,
+    bigint ? BigInt(statFs.bfree) : statFs.bfree,
+    bigint ? BigInt(statFs.bavail) : statFs.bavail,
+    bigint ? BigInt(statFs.files) : statFs.files,
+    bigint ? BigInt(statFs.ffree) : statFs.ffree,
+  );
+}
+
+export const statfsPromise = promisify(statfs);