! ! Test that can only be run as root as it uses mknod. ! $mkdir asroot $ umask 027 $ mknod asroot/null c 1 3 $ acl_mode asroot/null crw-r----- $ setfacl -m u:joe:rw,u:lisa:- asroot/null $ acl_mode asroot/null crw-rw----+ $ setfacl -m u:lisa:r asroot/null $ getfacl --omit-header asroot/null user::rw- user:joe:rw- user:lisa:r-- group::r-- mask::rw- other::--- $ su - lisa -c chmod\ +rw\ /mnt/lustre/asroot/null chmod: changing permissions of `/mnt/lustre/asroot/null': Operation not permitted $ rm -f asroot/null $ mkfifo asroot/fifo $ acl_mode asroot/fifo prw-r----- $ setfacl -m u:joe:- asroot/fifo $ getfacl --omit-header asroot/fifo user::rw- user:joe:--- group::r-- mask::r-- other::--- $ rm asroot/fifo $ mknod asroot/block b 1 1 $ setfacl -m u:joe:- asroot/block $ getfacl --omit-header asroot/block user::rw- user:joe:--- group::r-- mask::r-- other::--- $ rm asroot/block $ rmdir asroot