df: error on over-mounted device #7116
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Make `df` error when two devices are mounted at the same directory and
the earlier one is given as a positional argument to `df`. This is
called "over-mounting". After this commit, an error message is printed
like this:
df: cannot access '/dev/loop1': over-mounted by another device
Fixes uutils#3970
Co-authored-by: Jeffrey Finkelstein <jeffrey.finkelstein@protonmail.com>
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well done :) |
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Make
dferror when two devices are mounted at the same directory and the earlier one is given as a positional argument todf. This is called "over-mounting". After this commit, an error message is printed like this:Fixes #3970
(This is essentially identical to #4316, just rebased on
mainwith a couple minor merge conflict fixes.)