[Bug 2125263] Re: cp -r /dev/urandom copies content

[Benjamin Drung]

This breaks the dracut autopkgtest.

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Title:
  cp -r /dev/urandom copies content

Status in rust-coreutils package in Ubuntu:
  New

Bug description:
  The GNU cp command copies character devices as is if -r is specified:

  ```
  # ls -l /dev/urandom
  crw-rw-rw- 1 root root 1, 9 May  2 08:49 /dev/urandom
  # gnucp -r /dev/urandom foo
  # ls -l foo
  crw-rw-r-- 1 root root 1, 9 Sep 20 15:38 foo
  ```

  The uutils cp command tries to copy the content.

  Ubuntu 25.10 with rust-coreutils 0.1.0+git20250813.4af2a84-0ubuntu7

  Forwarded upstream: https://github.com/uutils/coreutils/issues/8679

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