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cat: restore errno
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Authored by oshogbo on Jan 15 2021, 8:43 PM.
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Details

Summary

There is no guarantee that after close(2)/free the errno will be
persist. The caller of the udom_open function depends on the errno to
report errors.

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rS FreeBSD src repository - subversion
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Buildable 36243
Build 33132: arc lint + arc unit