fs.fchown is not a function

[rnbguy]

Extracting using tar fails with fs.fchown is not a function error.

Reproducible steps:

// tar_compat.ts
import * as tar from "npm:[email protected]";
import { pipeline } from "node:stream/promises";

await fetch(
  "https://github.com/informalsystems/apalache/releases/download/v0.44.11/apalache.tgz",
).then((resp) =>
  pipeline(
    resp.body,
    tar.extract({ cwd: ".", strict: true }),
  )
);

~ # deno run -A tar_compat.ts
error: Uncaught (in promise) TypeError: fs.fchown is not a function
    at WriteStream.<anonymous> (file:///deno-dir/npm/registry.npmjs.org/tar/7.4.0/dist/esm/unpack.js:468:24)
    at WriteStream.emit (ext:deno_node/_events.mjs:386:28)
    at WriteStream.emit (file:///deno-dir/npm/registry.npmjs.org/@isaacs/fs-minipass/4.0.1/dist/esm/index.js:252:22)
    at WriteStream.[_onwrite] (file:///deno-dir/npm/registry.npmjs.org/@isaacs/fs-minipass/4.0.1/dist/esm/index.js:337:26)
    at file:///deno-dir/npm/registry.npmjs.org/@isaacs/fs-minipass/4.0.1/dist/esm/index.js:319:87
    at ext:deno_node/_fs/_fs_write.mjs:105:9
    at eventLoopTick (ext:core/01_core.js:168:7)

The apalache.tgz's content permissions:

~ # curl -sLO https://github.com/informalsystems/apalache/releases/download/v0.44.11/apalache.tgz
~ # tar -tvf apalache.tgz
drwxr-xr-x runner/docker     0 2024-05-06 12:37 apalache/
-rw-r--r-- runner/docker 11945 2024-05-06 12:37 apalache/LICENSE
drwxr-xr-x runner/docker     0 2024-05-06 12:37 apalache/lib/
-rw-r--r-- runner/docker 104008305 2024-05-06 12:37 apalache/lib/apalache.jar
drwxr-xr-x runner/docker         0 2024-05-06 12:37 apalache/bin/
-rwxr-xr-x runner/docker      1945 2024-05-06 12:37 apalache/bin/apalache-mc

Version: Deno 1.44.4

[satyarohith]

@rnbguy may I know the platform you're encoutering the issue on? The script works fine with Deno 1.44.4 on macOS

➜  24314 deno --version
deno 1.44.4 (release, aarch64-apple-darwin)
v8 12.6.228.9
typescript 5.4.5
➜  24314 cat a.ts
───────┬──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
       │ File: a.ts
───────┼──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
   1   │ import * as tar from "npm:[email protected]";
   2   │ import { pipeline } from "node:stream/promises";
   3   │
   4   │ await fetch(
   5   │   "https://github.com/informalsystems/apalache/releases/download/v0.44.11/apalache.tgz",
   6   │ ).then((resp) =>
   7   │   pipeline(
   8   │     resp.body,
   9   │     tar.extract({ cwd: ".", strict: true }),
  10   │   )
  11   │ );
───────┴──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
➜  24314 deno run -A a.ts
➜  24314 ls -lR apalache
total 24
-rw-r--r--  1 sr  staff  11945 May  6 18:07 LICENSE
drwxr-xr-x  3 sr  staff     96 Jun 24 12:10 bin
drwxr-xr-x  3 sr  staff     96 Jun 24 12:10 lib

apalache/bin:
total 8
-rwxr-xr-x  1 sr  staff  1945 May  6 18:07 apalache-mc

apalache/lib:
total 230920
-rw-r--r--  1 sr  staff  104008305 May  6 18:07 apalache.jar

[rnbguy]

I am on Linux.

[rnbguy]

I just realized, this works fine on my personal Arch Linux computer. But fails on docker images. I tried:

1. alpine, debian, ubuntu tags for denoland/deno image.
2. archlinux image with pacman -S deno (same setup as my personal computer).

[rnbguy]

It looks like it might be something with root user. The following Dockerfile works fine:

FROM archlinux

RUN pacman -Sy --noconfirm deno

RUN useradd -ms /bin/bash newuser
USER newuser
WORKDIR /home/newuser

COPY --chown=newuser:newuser tar_compat.ts /home/newuser/tar_compat.ts

(host) $ docker build -t deno-arch .
(host) $ docker run -it --rm deno-arch
(docker) $ deno run -A tar_compat.ts # success