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Re: Regression: "find dir/. -type d -empty -delete" claims 'unsuccessful

From: Dmitry V. Levin
Subject: Re: Regression: "find dir/. -type d -empty -delete" claims 'unsuccessful', breaking scripts.
Date: Tue, 19 Nov 2013 04:29:45 +0400

On Mon, Nov 18, 2013 at 03:55:52PM -0800, Linda A. Walsh wrote:
> In coreutils 8.21-7.1.3.
> It has been standard to use "." in a directory to mean it's contents
> on a recursive or copy  (compare cp -al src/. dst/.).
> However, "find dir/. -type d -empty -delete"  works, but

Does it?

$ mkdir dir && strace -eunlinkat -- find dir/. -type d -empty -delete
unlinkat(AT_FDCWD, "dir/.", AT_REMOVEDIR) = -1 EINVAL (Invalid argument)
find: cannot delete 'dir/.': Invalid argument
+++ exited with 1 +++

This behaviour seems to be consistent with rmdir:

$ mkdir dir && strace -ermdir -- rmdir dir/.
rmdir("dir/.")                          = -1 EINVAL (Invalid argument)
rmdir: failed to remove 'dir/.': Invalid argument
+++ exited with 1 +++


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