From c346689088e8bb5cdcdc5fe2a3fb2114047ca4b8 Mon Sep 17 00:00:00 2001
From: Luis Gerhorst <privat@luisgerhorst.de>
Date: Tue, 19 Jan 2021 11:08:00 +0100
Subject: [PATCH] bpftask: allow base_func helpers
---
kernel/bpf/task.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/kernel/bpf/task.c b/kernel/bpf/task.c
index 75677bdc811f4..368fb8ad23f7f 100644
--- a/kernel/bpf/task.c
+++ b/kernel/bpf/task.c
@@ -200,11 +200,22 @@ static long find(const char __user *pathname_user, const char __user *filename_u
return err;
}
-/* dummy _ops. The verifier will operate on target program's ops. */
+static const struct bpf_func_proto *
+task_prog_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
+{
+ switch (func_id) {
+ /* case BPF_FUNC_ktime_get_ns: */
+ /* return &bpf_ktime_get_ns_proto; */
+ default:
+ return bpf_base_func_proto(func_id);
+ }
+}
+
const struct bpf_verifier_ops task_verifier_ops = {
+ .get_func_proto = task_prog_func_proto,
};
-const struct bpf_prog_ops task_prog_ops = {
-};
+
+const struct bpf_prog_ops task_prog_ops = {};
SYSCALL_DEFINE2(bpftask, int, prog_fd, void *, arg)
{
--
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