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Subject: [Bug 222258] renameat(2) capability error with absolute path names
 outside of a sandbox
Date: Thu, 14 Sep 2017 00:02:58 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222258

tony@develop-help.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tony@develop-help.com

--- Comment #2 from tony@develop-help.com ---
Yes, the code grabs a handle to the cwd when opening the file for -i and us=
es
that handle when cleaning up when the file is closed, in this specific case
when renaming the original file to a backup file, or renaming the work file
over the original file.

If we were passing AT_FDCWD we could just call rename().

I have a workaround patch (for perl) that calls rename() for absolute paths=
 on
FreeBSD if Mathieu wants to try it on the tonyc/127663-freebsd-renameat bra=
nch
in the perl5 git at git://perl5.git.perl.org/perl.git

I do wonder if renameat() will behave correctly in a container on FreeBSD.

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