1// SPDX-License-Identifier: GPL-2.0
2#include <test_progs.h>
3
4void test_task_fd_query_rawtp(void)
5{
6	const char *file = "./test_get_stack_rawtp.bpf.o";
7	__u64 probe_offset, probe_addr;
8	__u32 len, prog_id, fd_type;
9	struct bpf_object *obj;
10	int efd, err, prog_fd;
11	__u32 duration = 0;
12	char buf[256];
13
14	err = bpf_prog_test_load(file, BPF_PROG_TYPE_RAW_TRACEPOINT, &obj, &prog_fd);
15	if (CHECK(err, "prog_load raw tp", "err %d errno %d\n", err, errno))
16		return;
17
18	efd = bpf_raw_tracepoint_open("sys_enter", prog_fd);
19	if (CHECK(efd < 0, "raw_tp_open", "err %d errno %d\n", efd, errno))
20		goto close_prog;
21
22	/* query (getpid(), efd) */
23	len = sizeof(buf);
24	err = bpf_task_fd_query(getpid(), efd, 0, buf, &len, &prog_id,
25				&fd_type, &probe_offset, &probe_addr);
26	if (CHECK(err < 0, "bpf_task_fd_query", "err %d errno %d\n", err,
27		  errno))
28		goto close_prog;
29
30	err = fd_type == BPF_FD_TYPE_RAW_TRACEPOINT &&
31	      strcmp(buf, "sys_enter") == 0;
32	if (CHECK(!err, "check_results", "fd_type %d tp_name %s\n",
33		  fd_type, buf))
34		goto close_prog;
35
36	/* test zero len */
37	len = 0;
38	err = bpf_task_fd_query(getpid(), efd, 0, buf, &len, &prog_id,
39				&fd_type, &probe_offset, &probe_addr);
40	if (CHECK(err < 0, "bpf_task_fd_query (len = 0)", "err %d errno %d\n",
41		  err, errno))
42		goto close_prog;
43	err = fd_type == BPF_FD_TYPE_RAW_TRACEPOINT &&
44	      len == strlen("sys_enter");
45	if (CHECK(!err, "check_results", "fd_type %d len %u\n", fd_type, len))
46		goto close_prog;
47
48	/* test empty buffer */
49	len = sizeof(buf);
50	err = bpf_task_fd_query(getpid(), efd, 0, 0, &len, &prog_id,
51				&fd_type, &probe_offset, &probe_addr);
52	if (CHECK(err < 0, "bpf_task_fd_query (buf = 0)", "err %d errno %d\n",
53		  err, errno))
54		goto close_prog;
55	err = fd_type == BPF_FD_TYPE_RAW_TRACEPOINT &&
56	      len == strlen("sys_enter");
57	if (CHECK(!err, "check_results", "fd_type %d len %u\n", fd_type, len))
58		goto close_prog;
59
60	/* test smaller buffer */
61	len = 3;
62	err = bpf_task_fd_query(getpid(), efd, 0, buf, &len, &prog_id,
63				&fd_type, &probe_offset, &probe_addr);
64	if (CHECK(err >= 0 || errno != ENOSPC, "bpf_task_fd_query (len = 3)",
65		  "err %d errno %d\n", err, errno))
66		goto close_prog;
67	err = fd_type == BPF_FD_TYPE_RAW_TRACEPOINT &&
68	      len == strlen("sys_enter") &&
69	      strcmp(buf, "sy") == 0;
70	if (CHECK(!err, "check_results", "fd_type %d len %u\n", fd_type, len))
71		goto close_prog;
72
73close_prog:
74	bpf_object__close(obj);
75}
76