security/realcaps.c still uses mod_unreg_security and
unregister_security to try and unregister the realtime capabilities
from LSM. Those functions appear to have been removed from
security/security.c, so the build fails with:
security/realcap.c: In function ‘realtime_exit’:
security/realcap.c:129: error: implicit declaration of
function ‘mod_unreg_security’
security/realcap.c:133: error: implicit declaration of
function ‘unregister_security’
‘mod_unreg_security’ only exists in the one place and in the lsm.tmpl
I compared the security.c of 2.6.23.9-rt12 and it still has the two
missing functions. Was there a change in how features are unregistered
from LSM that was missed for the realcaps.c file perhaps?
I commented out the unreg calls to try and build, it completed, but the
realcap.ko had several undefined symbols.
Kernel: arch/x86/boot/bzImage is ready (#1)
ERROR: "cap_netlink_send" [security/realcap.ko] undefined!
ERROR: "cap_task_reparent_to_init" [security/realcap.ko] undefined!
ERROR: "cap_task_post_setuid" [security/realcap.ko] undefined!
ERROR: "cap_bprm_secureexec" [security/realcap.ko] undefined!
ERROR: "cap_bprm_set_security" [security/realcap.ko] undefined!
ERROR: "cap_vm_enough_memory" [security/realcap.ko] undefined!
ERROR: "cap_syslog" [security/realcap.ko] undefined!
ERROR: "cap_capable" [security/realcap.ko] undefined!
ERROR: "cap_capset_set" [security/realcap.ko] undefined!
ERROR: "cap_capset_check" [security/realcap.ko] undefined!
ERROR: "cap_capget" [security/realcap.ko] undefined!
ERROR: "cap_ptrace" [security/realcap.ko] undefined!
ERROR: "cap_bprm_apply_creds" [security/realcap.ko] undefined!
ERROR: "mod_reg_security" [security/realcap.ko] undefined!
ERROR: "register_security" [security/realcap.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2
Checking the config I see this is marked as obsolete, so maybe we don't
care all that much - but if it wasn't just removed, I suspect we still
want it to build?
Thanks,
--
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team
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