diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/bpf_iter_test_kern3.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/bpf_iter_test_kern3.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_test_kern3.c b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern3.c new file mode 100644 index 000000000000..13c2c90c835f --- /dev/null +++ b/tools/testing/selftests/bpf/progs/bpf_iter_test_kern3.c @@ -0,0 +1,33 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2020 Facebook */ +#define bpf_iter_meta bpf_iter_meta___not_used +#define bpf_iter__task bpf_iter__task___not_used +#include "vmlinux.h" +#undef bpf_iter_meta +#undef bpf_iter__task +#include <bpf/bpf_helpers.h> + +char _license[] SEC("license") = "GPL"; + +struct bpf_iter_meta { + struct seq_file *seq; + __u64 session_id; + __u64 seq_num; +} __attribute__((preserve_access_index)); + +struct bpf_iter__task { + struct bpf_iter_meta *meta; + struct task_struct *task; +} __attribute__((preserve_access_index)); + +SEC("iter/task") +int dump_task(struct bpf_iter__task *ctx) +{ + struct seq_file *seq = ctx->meta->seq; + struct task_struct *task = ctx->task; + int tgid; + + tgid = task->tgid; + bpf_seq_write(seq, &tgid, sizeof(tgid)); + return 0; +} |