Use appropriate fsyncs to persist the rewritten /etc/motd file, when a
rewrite is performed.
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Details
- Reviewers
vangyzen allanjude - Commits
- rS349256: rc.d/motd: Update motd more robustly
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Buildable 24941 Build 23666: arc lint + arc unit
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As mjg@ points out, the mktemp file may be on a different filesystem than /etc
(e.g., tmpfs, but any other filesystem invalidates the initial fsync). Copy to
a temporary /etc file, sync that, then rename over /etc/motd.