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

[Benjamin Drung]

Public bug reported:

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

** Affects: rust-coreutils (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  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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https://bugs.launchpad.net/bugs/2125263

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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