• Serge E. Hallyn's avatar
    security: Define CAP_SYSLOG · ce6ada35
    Serge E. Hallyn authored
    Privileged syslog operations currently require CAP_SYS_ADMIN.  Split
    this off into a new CAP_SYSLOG privilege which we can sanely take away
    from a container through the capability bounding set.
    With this patch, an lxc container can be prevented from messing with
    the host's syslog (i.e. dmesg -c).
    Changelog: mar 12 2010: add selinux capability2:cap_syslog perm
    Changelog: nov 22 2010:
    	. port to new kernel
    	. add a WARN_ONCE if userspace isn't using CAP_SYSLOG
    Signed-off-by: default avatarSerge Hallyn <serge.hallyn@ubuntu.com>
    Acked-by: default avatarAndrew G. Morgan <morgan@kernel.org>
    Acked-By: default avatarKees Cook <kees.cook@canonical.com>
    Cc: James Morris <jmorris@namei.org>
    Cc: Michael Kerrisk <mtk.manpages@gmail.com>
    Cc: Stephen Smalley <sds@tycho.nsa.gov>
    Cc: "Christopher J. PeBenito" <cpebenito@tresys.com>
    Cc: Eric Paris <eparis@parisplace.org>
    Signed-off-by: default avatarJames Morris <jmorris@namei.org>
capability.h 17.3 KB