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https://issues.apache.org/jira/browse/MESOS-8027?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Peach reassigned MESOS-8027:
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Assignee: James Peach
| [r/62638|https://reviews.apache.org/r/62638] | Removed support for platforms
without O_CLOEXEC. |
> os::open doesn't always atomically apply O_CLOEXEC
> --------------------------------------------------
>
> Key: MESOS-8027
> URL: https://issues.apache.org/jira/browse/MESOS-8027
> Project: Mesos
> Issue Type: Bug
> Components: stout
> Reporter: James Peach
> Assignee: James Peach
> Labels: security
>
> In [r/39180|https://reviews.apache.org/r/39180], the {{os/open.hpp}} header
> was refactored so that it conditionally includes {{fcntl.h}}. However
> {{fcntl.h}} is required to make the {{O_CLOEXEC}} symbol visible, so it is
> quite likely that {{O_CLOEXEC_UNDEFINED}} will be defined even on systems
> that do actually support {{O_CLOEXEC}}. This causes {{os::open}} to fall back
> to the non-atomic open+fcntl sequence, which can leak file descriptors into
> child processes.
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