Lennart Poettering
c2d62118f7
Negative flags always raise eyebrows. Let's normalize
SWITCH_ROOT_SKIP_RECURSIVE_RUN to become SWITCH_ROOT_RECURSIVE_RUN, i.e.
make recursive behaviour opt-in, rather than opt-out. We only want it
for the initrd→host transition, and in all other cases we'd prefer to
avoid it.
This allows us to simplify some code. Also, normalize the mount point
table in switch_root() a bit, to be static const, and then just select
between two mount flag sets via SWITCH_ROOT_RECURSIVE_RUN, where the
mount flag without MS_BIND (i.e. zero) just means "skip this entry".
This does not actually change anything in behaviour, it's just
refactoring.
Follow-up for: b12d41a8bb
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