diff options
Diffstat (limited to 'tools/testing/selftests/bpf/progs/test_ns_current_pid_tgid.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/test_ns_current_pid_tgid.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_ns_current_pid_tgid.c b/tools/testing/selftests/bpf/progs/test_ns_current_pid_tgid.c new file mode 100644 index 000000000000..0763d49f9c42 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_ns_current_pid_tgid.c @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 Carlos Neira cneirabustos@gmail.com */ + +#include <linux/bpf.h> +#include <stdint.h> +#include <bpf/bpf_helpers.h> + +__u64 user_pid = 0; +__u64 user_tgid = 0; +__u64 dev = 0; +__u64 ino = 0; + +SEC("tracepoint/syscalls/sys_enter_nanosleep") +int handler(const void *ctx) +{ + struct bpf_pidns_info nsdata; + + if (bpf_get_ns_current_pid_tgid(dev, ino, &nsdata, sizeof(struct bpf_pidns_info))) + return 0; + + user_pid = nsdata.pid; + user_tgid = nsdata.tgid; + + return 0; +} + +char _license[] SEC("license") = "GPL"; |