On Tue, 25 Jun 2019 at 19:23, Song Liu <songliubraving@xxxxxx> wrote: > > This patch introduce unprivileged BPF access. The access control is > achieved via device /dev/bpf. Users with access to /dev/bpf are able > to access BPF syscall. > > Two ioctl command are added to /dev/bpf: > > The first two commands get/put permission to access sys_bpf. This > permission is noted by setting bit TASK_BPF_FLAG_PERMITTED of > current->bpf_flags. This permission cannot be inherited via fork(). I know nothing about the scheduler, so pardon my ignorance. Does TASK_BPF_FLAG_PERMITTED apply per user-space process, or per thread? -- Lorenz Bauer | Systems Engineer 6th Floor, County Hall/The Riverside Building, SE1 7PB, UK www.cloudflare.com
