> On Jun 19, 2025, at 1:48 AM, Christian Brauner <brauner@xxxxxxxxxx> wrote: > > On Wed, Jun 18, 2025 at 02:43:34PM -1000, Tejun Heo wrote: >> Hello, >> >> On Wed, Jun 18, 2025 at 04:37:35PM -0700, Song Liu wrote: >>> Introduce a new kfunc bpf_kernfs_read_xattr, which can read xattr from >>> kernfs nodes (cgroupfs, for example). The primary users are LSMs, for >>> example, from systemd. sched_ext could also use xattrs on cgroupfs nodes. >>> However, this is not allowed yet, because bpf_kernfs_read_xattr is only >>> allowed from LSM hooks. The plan is to address sched_ext later (or in a >>> later revision of this set). >> >> I don't think kernfs is the name we should be exposing to BPF users. This is >> an implementation detail which may change in the future. I'd rather make it >> a generic interface or a cgroup specific one. The name "kernfs" doesn't > > cgroup specific, please. That's what I suggested to Daan. I guess there was some misunderstanding. I will make this cgroup specific in v2. Thanks, Song
