On Thu, 27 Jul 2000, H. Peter Anvin wrote:
> I don't want to have to try it before testing. However, what is worse,
> is that you're telling me "mount -t bind" will be replaced by something
> else, which I don't even know what it is.
>
> > should do it quite fine, no? Or C equivalent... Same goes for new API,
> > except that there C equivalent is even simpler - mount("foo","foo","",
^^^^^^^^^^^^^^^^^^^^^
> > MS_MGC_VAL|MS_BIND, NULL) and check the return value. It will always fail
^^^^^^^^^^^^^^^^^^^^^^^^^
mount("old_place", "new_place", "", MS_MGC_VAL|MS_BIND, NULL) - no testing
needed. On the kernel witout MS_BIND it will always fail. On the new one
it will work, provided that both places exist, are either both directories
or both non-directories and you are root. For the current API call would
be mount("old_place", "new_place", "bind", MS_MGC_VAL, NULL) - same
situation, but messier code in fs/super.c.
Is that OK with you? If you want some other indication that mechanism is
in place - tell me what sort of indicator you want.
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