Re: question related to cp (-p) and /tmp

["Thomas Schmitt" <scdbackup@gmx.net>]

Hi,

Patrice Duroux wrote:
> > cp: preserving permissions for '/tmp/test.sh': Operation not supported

Greg Wooledge wrote:
> I was thinking something similar, but the "ls -l ./test.sh" did not
> show any markup indicating ACL.

At least cp calls ACL "permissions". See
  https://sources.debian.org/src/coreutils/9.4-3.1/lib/copy-acl.c/?hl=54#L54
After getting return value -1 from copy_acl(), it does:

      error (0, errno, _("preserving permissions for %s"), quote (dst_name));

The other two occurences of the error message are not as easy to decode:
  https://sources.debian.org/src/coreutils/9.4-3.1/src/copy.c/?hl=1696#L1696
  https://sources.debian.org/src/coreutils/9.4-3.1/src/copy.c/?hl=3340#L3340

Other thought:
Maybe chattr(1) attribute "i" can be considered a permission, too.


Have a nice day :)

Thomas