From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 20 Feb 2020 18:32:42 GMT
Subject: Re: BUG: git clean -d cannot remove files from read-only directories
Message-ID: <xmqqo8ttaz3p.fsf@gitster-ct.c.googlers.com>
In-Reply-To: <BL0PR2101MB10898F2F84B06B1A6B23228380130@BL0PR2101MB1089.namprd21.prod.outlook.com>

Adam Milazzo <Adam.Milazzo@microsoft.com> writes:

> Repro steps:
> 1. git init 
> 2. mkdir d
> 3. touch d/a
> 4. chmod -w d
> 5. git clean -fd
>
> Actual result:
> Git doesn't remove anything, saying "warning: failed to remove d/a".
>
> Expected result:
> Git should remove the subdirectory 'd' along with its
> contents. Note that git can remove a read-only file (touch b;
> chmod -w b; git clean -f) with no problem.

It is how UNIX-like filesystem works, isn't it?

As long as a directory D is writable/executable, any regular file
inside it can be removed regardless of the perm-bits of the file.

	mkdir d
	touch d/a
	chmod -w d
	rm d/a

would not let you remove the file d/a from d/, exactly because you
cannot modify d/ (it is not writable).