Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.com To: Randall R Schulz Cc: Rick Rankin , John William , cygwin@cygwin.com Subject: Re: 1.3.2 rmdir fails if CWD is in the directory to be deleted? References: <5.1.0.14.2.20010908074822.0292ce60@pop3.cris.com> From: James Youngman Date: 09 Sep 2001 13:29:55 +0100 In-Reply-To: <5.1.0.14.2.20010908074822.0292ce60@pop3.cris.com> Message-ID: Lines: 43 User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/20.7 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Randall R Schulz writes: > You should try it. On many Unix systems it will work just > fine. After the rmdir call, no call that uses a relative file name > will work, however, since the directory must have been empty to be > removed and in doing so the .. link would have been removed. > > This applies to "classic" implementations on the Unix file > system. Chris has pointed out that IRIX does not behave this > way. Since those details are not part of the API specifications, the > implementers get to do what they please. The (POSIX)|(X/Open) spec currenly says (about rmdir()) :- (38292 ff.) > The rmdir( ) function shall remove a directory whose name is given > by path. The directory shall be removed only if it is an empty > directory. If the directory is the root directory or the current > working directory of any process, it is unspecified whether the > function succeeds, or whether it shall fail and set errno to > [EBUSY]. If path names a symbolic link, then rmdir( ) shall fail > and set errno to [ENOTDIR]. > > If the directory's link count becomes 0 and no process has the > directory open, the space occupied by the directory shall be freed > and the directory shall no longer be accessible. If one or more > processes have the directory open when the last link is removed, the > dot and dot-dot entries, if present, shall be removed before rmdir( > ) returns and no new entries may be created in the directory, but > the directory shall not be removed until all references to the > directory are closed. If the directory is not an empty directory, > rmdir( ) shall fail and set errno to [EEXIST] or [ENOTEMPTY]. My reading of this is that if you have a directory open by virtue of it being your working directory, then it is valid for rmdir() to fail. If however it is open via opendir(), then the rmdir() must succeed. -- James Youngman Manchester, UK. +44 161 226 7339 PGP (GPG) key ID for is 64A95EE5 (F1B83152). -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/