| // SPDX-License-Identifier: GPL-2.0 |
| #include <test_progs.h> |
| |
| void test_task_fd_query_rawtp(void) |
| { |
| const char *file = "./test_get_stack_rawtp.o"; |
| __u64 probe_offset, probe_addr; |
| __u32 len, prog_id, fd_type; |
| struct bpf_object *obj; |
| int efd, err, prog_fd; |
| __u32 duration = 0; |
| char buf[256]; |
| |
| err = bpf_prog_test_load(file, BPF_PROG_TYPE_RAW_TRACEPOINT, &obj, &prog_fd); |
| if (CHECK(err, "prog_load raw tp", "err %d errno %d\n", err, errno)) |
| return; |
| |
| efd = bpf_raw_tracepoint_open("sys_enter", prog_fd); |
| if (CHECK(efd < 0, "raw_tp_open", "err %d errno %d\n", efd, errno)) |
| goto close_prog; |
| |
| /* query (getpid(), efd) */ |
| len = sizeof(buf); |
| err = bpf_task_fd_query(getpid(), efd, 0, buf, &len, &prog_id, |
| &fd_type, &probe_offset, &probe_addr); |
| if (CHECK(err < 0, "bpf_task_fd_query", "err %d errno %d\n", err, |
| errno)) |
| goto close_prog; |
| |
| err = fd_type == BPF_FD_TYPE_RAW_TRACEPOINT && |
| strcmp(buf, "sys_enter") == 0; |
| if (CHECK(!err, "check_results", "fd_type %d tp_name %s\n", |
| fd_type, buf)) |
| goto close_prog; |
| |
| /* test zero len */ |
| len = 0; |
| err = bpf_task_fd_query(getpid(), efd, 0, buf, &len, &prog_id, |
| &fd_type, &probe_offset, &probe_addr); |
| if (CHECK(err < 0, "bpf_task_fd_query (len = 0)", "err %d errno %d\n", |
| err, errno)) |
| goto close_prog; |
| err = fd_type == BPF_FD_TYPE_RAW_TRACEPOINT && |
| len == strlen("sys_enter"); |
| if (CHECK(!err, "check_results", "fd_type %d len %u\n", fd_type, len)) |
| goto close_prog; |
| |
| /* test empty buffer */ |
| len = sizeof(buf); |
| err = bpf_task_fd_query(getpid(), efd, 0, 0, &len, &prog_id, |
| &fd_type, &probe_offset, &probe_addr); |
| if (CHECK(err < 0, "bpf_task_fd_query (buf = 0)", "err %d errno %d\n", |
| err, errno)) |
| goto close_prog; |
| err = fd_type == BPF_FD_TYPE_RAW_TRACEPOINT && |
| len == strlen("sys_enter"); |
| if (CHECK(!err, "check_results", "fd_type %d len %u\n", fd_type, len)) |
| goto close_prog; |
| |
| /* test smaller buffer */ |
| len = 3; |
| err = bpf_task_fd_query(getpid(), efd, 0, buf, &len, &prog_id, |
| &fd_type, &probe_offset, &probe_addr); |
| if (CHECK(err >= 0 || errno != ENOSPC, "bpf_task_fd_query (len = 3)", |
| "err %d errno %d\n", err, errno)) |
| goto close_prog; |
| err = fd_type == BPF_FD_TYPE_RAW_TRACEPOINT && |
| len == strlen("sys_enter") && |
| strcmp(buf, "sy") == 0; |
| if (CHECK(!err, "check_results", "fd_type %d len %u\n", fd_type, len)) |
| goto close_prog; |
| |
| close_prog: |
| bpf_object__close(obj); |
| } |