I am running Ubuntu 4.18.0-17 (x86_64)
"ext4" is the mounted file system for the drive.
When trying to set security.ima extended attribute on any file I get
error "Invalid argument".
setfattr -n security.ima -v foo /boot/vmlinuz-4.18.0-17-generic
setfattr: /boot/vmlinuz-4.18.0-17-generic: Invalid argument
If I try any other name for the extended, say, foo I see error
"Operation not supported".
setfattr -n foo -v bar /boot/vmlinuz-4.18.0-17-generic
setfattr: /boot/vmlinuz-4.18.0-17-generic: Operation not supported
Note that if use "user." prefix in the extended attribute's name it
works fine. For example,
setfattr -n user.foo -v user.bar /boot/vmlinuz-4.18.0-17-generic
getfattr -d /boot/vmlinuz-4.18.0-17-generic
getfattr: Removing leading '/' from absolute path names
# file: boot/vmlinuz-4.18.0-17-generic
user.foo="user.bar"
I have tried setting "user_xattr" option in /etc/fstab.
Do I have enable any other option\config to allow setting\updating
security.ima attribute?
thanks,
-lakshmi
