On Thu, 20 Jan 2011 05:21:50 +0000, WANG Cong wrote: > On Wed, 19 Jan 2011 17:26:30 -0500, Eric Paris wrote: > >> much like /proc/sys/kernel/modules_disable is used to disable module >> loading, /proc/sys/kernel/kexec_disable is used to disable kexec code >> loading. It would still be possible to use kexec -l to load a kernel, >> set the tunable to 1 so the kernel waiting to boot couldn't change, and >> then launch the kernel at a later time (through kexec -e or through a >> crash) >> >> > But root can still change it to 0 and do kexec like normal, right? Er... never mind, it is a one-way road... Looks like a good balance between reusing CAP_SYS_MODULE and introducing a new CAP_SYS_XXX. Acked-by: WANG Cong <xiyou.wangcong at gmail.com> Thanks.
