From: Johannes Schindelin <Johannes.Schindelin@gmx.de> To: Junio C Hamano <gitster@pobox.com> Cc: Johannes Schindelin via GitGitGadget <gitgitgadget@gmail.com>, git@vger.kernel.org Subject: Re: [PATCH 0/4] On Windows, limit which file handles are inherited by spawned child processes Date: Mon, 25 Nov 2019 17:29:07 +0100 (CET) Message-ID: <nycvar.QRO.7.76.6.1911251727560.31080@tvgsbejvaqbjf.bet> (raw) In-Reply-To: <xmqqimn8y0k5.fsf@gitster-ct.c.googlers.com> Hi Junio, On Mon, 25 Nov 2019, Junio C Hamano wrote: > "Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com> > writes: > > > The problem to be solved: files cannot be deleted on Windows when even one > > process has an open file handle to it. So when a process opens a temporary > > file, then spawns a child process that inherits that file handle by mistake, > > and then the parent process tries to delete the temporary file while the > > child process is still running, the deletion will fail. (This description is > > slightly simplified, see the commit message "spawned processes need to > > inherit only standard handles" for more detail.) > > Makes me wonder if we should be marking these fds with FD_CLOEXEC to > solve the issue in a way that is platform agnostic. I would like that a lot. Having said that, it is too easy to miss when a patch forgets to do that and when the contributor only tests on Linux. So I really also would like to keep the current patch in addition. Thanks, Dscho > It may turn out that we'd be better off to make it an explicit choice by > the parent when it leaves a FD open while spawning a child process (and > by that spawned child when it runs another executable---but I undertand > that it is a single-step operation, not a two-step one, on Windows). > > In any case, synchronizing the differences in compat/ between our > trees is good. Queued. > >
prev parent reply other threads:[~2019-11-25 16:29 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-11-22 14:41 Johannes Schindelin via GitGitGadget 2019-11-22 14:41 ` [PATCH 1/4] mingw: demonstrate that all file handles are inherited by " Johannes Schindelin via GitGitGadget 2019-11-22 14:41 ` [PATCH 2/4] mingw: work around incorrect standard handles Johannes Schindelin via GitGitGadget 2019-11-22 14:41 ` [PATCH 3/4] mingw: spawned processes need to inherit only " Johannes Schindelin via GitGitGadget 2019-11-28 21:48 ` Johannes Sixt 2019-11-29 13:52 ` Johannes Schindelin 2019-11-29 20:40 ` Johannes Schindelin 2019-11-29 22:19 ` Johannes Sixt 2019-11-29 22:37 ` Johannes Sixt 2019-11-30 22:10 ` Johannes Schindelin 2019-11-22 14:41 ` [PATCH 4/4] mingw: restrict file handle inheritance only on Windows 7 and later Johannes Schindelin via GitGitGadget 2019-11-25 5:42 ` [PATCH 0/4] On Windows, limit which file handles are inherited by spawned child processes Junio C Hamano 2019-11-25 16:29 ` Johannes Schindelin [this message]
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