===== Compact way of setting rsbac boot parameters ===== Recently a new way of setting rsbac boot parameters has been added. To avoid very long boot loader command lines, you can now pass a numerical argument, calculated according to the attached table. ^ Boot parameter ^ Numerical value ^ | rsbac_softmode | 1 | | rsbac_softmode_once | 2 | | rsbac_softmode_never| 4 | | rsbac_softmode_freeze | 8 | | rsbac_um_no_excl | 16 | | rsbac_auth_learn | 32 | | rsbac_acl_learn_fd | 64 | | rsbac_cap_log_missing | 128 | | rsbac_jail_log_missing | 256 | | rsbac_dac_disable | 512 | | rsbac_no_delay_init | 1024 | | rsbac_no_defaults | 2048 | | rsbac_nosyslog | 4096 | | rsbac_cap_process_hiding | 8192 | As you can see, these are just a power of two, the most simple yet powerful encoding scheme. Example: Say you would like to have rsbac_nosyslog, rsbac_cap_process_hiding, rsbac_cap_log_missing, rsbac_jail_log_missing set on every boot (actually it comes from my machines). To achieve this in a traditional way, a very long boot parameter line would have to be used - and remember, it cannot be of arbitrary sizes, it is limited (to 1024 bytes, from what I remember). With the numerical encoding scheme you just calculate 4096+8192+128+256 = 12672 and write: rsbac_flags = 12672 as the kernel command line. That's it, compact and elegant.