tools/testing/selftests/bpf/progs/test_ptr_untrusted.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (C) 2023 Yafang Shao <[email protected]> */
   3
   4 #include "vmlinux.h"
   5 #include <bpf/bpf_tracing.h>
   6
   7 char tp_name[128];
   8
   9 SEC("lsm.s/bpf")
  10 int BPF_PROG(lsm_run, int cmd, union bpf_attr *attr, unsigned int size)
  11 {
  12         switch (cmd) {
  13         case BPF_RAW_TRACEPOINT_OPEN:
  14                 bpf_copy_from_user(tp_name, sizeof(tp_name) - 1,
  15                                    (void *)attr->raw_tracepoint.name);
  16                 break;
  17         default:
  18                 break;
  19         }
  20         return 0;
  21 }
  22
  23 SEC("raw_tracepoint")
  24 int BPF_PROG(raw_tp_run)
  25 {
  26         return 0;
  27 }
  28
  29 char _license[] SEC("license") = "GPL";