|
A magic entry registered with 'D' and the same entry without it, to pin
down what the flag decides and what it leaves alone:
- the entry reports itself disabled and nothing dispatches until '1' is
written to it
- without 'D' it dispatches straight away
- 'D' is not read back among the entry's flags
- enabling and disabling afterwards works as it does for any entry
- 'D' composes with the flags that shape the invocation
- '-1' to the status file removes a staged entry like any other
- a file handle held across a removal cannot resurrect the entry
Put the entry write and read-back helpers into binfmt_misc_common.h.
The bpf suite will need them as well.
Link: https://patch.msgid.link/20260730-work-binfmt_misc-preopen-v1-3-4a0b0da71f16@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
|
