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72545ae057
9e486265716963439fb0fd7f2a97abf109f24f75 added some new syscalls to the filter lists. However, on systems that do not yet support the new calls, running systemd-run with the filter set results in error: ``` $ sudo systemd-run -t -r -p "SystemCallFilter=~@mount" /bin/true Failed to start transient service unit: Invalid argument ``` Having the same properties in a unit file will start the service without issue. This is because the load-fragment code will parse the syscall filters in permissive mode: https://github.com/systemd/systemd/blob/master/src/core/load-fragment.c#L2909 whereas the dbus-execute equivalent of the code does not. Since the permissive mode appears to be the right setting to support older kernels/libseccomp, this will update the dbus-execute parsing to also be permissive.
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