On Fri, Nov 06, 2009 at 03:46:20PM +0100, Karel Zak wrote:
> On Fri, Nov 06, 2009 at 02:04:39PM +0000, Terry Burton wrote:
> > 3. Leave mount broken and refuse a combination of -o ro and --bind
> > arguments - "ERROR: Invalid argument for a --bind mount, -ro"
>
> the best solution seem to try to detect MS_BIND + MS_RDONLY and then
> try to open() read-write any file in the target directory, and update
> mtab according to the result from this test. And print any warning
> if the target directory is still read-write.
I forgot note that
# mount --bind /foo /bar
# mount -o remount,ro /bar
works as expected (/foo is rw and /bar is ro).
Karel
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Karel Zak <kzak@xxxxxxxxxx>
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