Re: [PATCH net-next 1/3] bpf: introduce current->pid, tgid, uid, gid, comm accessors
- From
- Andy Lutomirski <hidden>
- Date
- 2015-06-12 22:09:24
- Also in
- lkml, netdev
- Reply to
- Alexei Starovoitov, 2015-06-12
On Fri, Jun 12, 2015 at 2:40 PM, Alexei Starovoitov [off-list ref] wrote:
eBPF programs attached to kprobes need to filter based on current->pid, uid and other fields, so introduce helper functions: u64 bpf_get_current_pid_tgid(void) Return: current->tgid << 32 | current->pid u64 bpf_get_current_uid_gid(void) Return: current_gid << 32 | current_uid
How does this work wrt namespaces, and why the weird packing? --Andy