TOMOYO
ForkHello.
I am experiencing "mount(2) system call failed: Function not implemented." failures with util-linux 2.39+ and
ccs-patch-1.8.9-20230527 with linux LTS 6.1.42 - 6.1.58.
I have tried the following without success:
using the learning and disabled modes from /etc/ccs/profile.conf
completely deleting my current policy and generating a new policy using /usr/lib/ccs/init_policy
using ccs-queryd immediately after installing util-linux 2.39.2 and mounting something
ccs-queryd did not prompt for anything at all and ccs-auditd does not log anything
The following things I have tried allow mount(2) to work properly:
changing GRUB_CMDLINE_LINUX_DEFAULT ccs init command to "ccsecurity=off"
compiling util-linux with the "--disable-libmount-mountfd-support" option
using the in-kernel TOMOYO (CONFIG_SECURITY_TOMOYO=y) with both a newly created policy and my existing
policy (edited to remove ccs's incompatible send/recv and capability rules)
I am wondering if anyone else has experienced these mount(2) failures and may have some advice you can share.
Thank you.