Symbolic Link Permissions on OpenBSD

[Antoine Verheijen]

Hi. I’m hoping this is the right place to send this. My sincerest
apologies if it’s not.

I have a small patch that I'm hoping might be considered for inclusion
in a future release of rsync. It relates to the retention of permissions
when copying symbolic links.

On most systems, permissions for a symbolic link are preserved. One
exception is OpenBSD where the use of fchmodat() is required for that
purpose. That function is not currently an option in rsync. The attached
patch adds it as a final resort. When copying a symbolic link,
fchmodat() will then be attempted, if it exists on the local system,
after all other possibilities have been tried, just prior giving up.

I have used this successfully for over half a year on OpenBSD without
problems. I have also included it in compilations for ArchLinux and
MacOS without any negative impact when used.

The patch does, of course, require a new aclocal, autoconf, autoheader,
etc. It has been successfully used with both versions 3.3.0 and 3.4.1.
The patch is currently based on the latter.

Thanks for your consideration.

------------------------------------------------------------------------
Antoine Verheijen                            Email: antoine at verheijen.ca
.                                            Phone: (780) 462-9696

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