Messages in this thread | | | Date | Fri, 15 May 2020 09:26:18 -0700 | From | Matthew Wilcox <> | Subject | Re: [PATCH v2] Implement close-on-fork |
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On Fri, May 15, 2020 at 04:07:33PM +0000, Karstens, Nate wrote: > Matthew, > > What alternative would you suggest? > > >From an earlier email: > > > ...nothing else addresses the underlying issue: there is no way to > > prevent a fork() from duplicating the resource. The close-on-exec > > flag partially-addresses this by allowing the parent process to > > mark a file descriptor as exclusive to itself, but there is still > > a period of time the failure can occur because the auto-close only > > occurs during the exec(). Perhaps this would not be an issue with > > a different process/threading model, but that is another discussion > > entirely. > > Do you disagree there is an issue?
Yes. system() is defined as being unsafe for a threaded application to call. I pointed this out in the last thread.
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