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| // 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_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);
| }
|
|
