tools/testing/selftests/bpf/progs/bpf_iter_test_kern_common.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (c) 2020 Facebook */
   3 #include <vmlinux.h>
   4 #include <bpf/bpf_helpers.h>
   5
   6 char _license[] SEC("license") = "GPL";
   7 int count = 0;
   8
   9 SEC("iter/task")
  10 int dump_task(struct bpf_iter__task *ctx)
  11 {
  12         struct seq_file *seq = ctx->meta->seq;
  13         char c;
  14
  15         if (count < 4) {
  16                 c = START_CHAR + count;
  17                 bpf_seq_write(seq, &c, sizeof(c));
  18                 count++;
  19         }
  20
  21         return 0;
  22 }