1// SPDX-License-Identifier: GPL-2.0
 2#include <test_progs.h>
 3
 4void test_prog_run_xattr(void)
 5{
 6	const char *file = "./test_pkt_access.o";
 7	struct bpf_object *obj;
 8	char buf[10];
 9	int err;
10	struct bpf_prog_test_run_attr tattr = {
11		.repeat = 1,
12		.data_in = &pkt_v4,
13		.data_size_in = sizeof(pkt_v4),
14		.data_out = buf,
15		.data_size_out = 5,
16	};
17
18	err = bpf_prog_load(file, BPF_PROG_TYPE_SCHED_CLS, &obj,
19			    &tattr.prog_fd);
20	if (CHECK_ATTR(err, "load", "err %d errno %d\n", err, errno))
21		return;
22
23	memset(buf, 0, sizeof(buf));
24
25	err = bpf_prog_test_run_xattr(&tattr);
26	CHECK_ATTR(err != -1 || errno != ENOSPC || tattr.retval, "run",
27	      "err %d errno %d retval %d\n", err, errno, tattr.retval);
28
29	CHECK_ATTR(tattr.data_size_out != sizeof(pkt_v4), "data_size_out",
30	      "incorrect output size, want %lu have %u\n",
31	      sizeof(pkt_v4), tattr.data_size_out);
32
33	CHECK_ATTR(buf[5] != 0, "overflow",
34	      "BPF_PROG_TEST_RUN ignored size hint\n");
35
36	tattr.data_out = NULL;
37	tattr.data_size_out = 0;
38	errno = 0;
39
40	err = bpf_prog_test_run_xattr(&tattr);
41	CHECK_ATTR(err || errno || tattr.retval, "run_no_output",
42	      "err %d errno %d retval %d\n", err, errno, tattr.retval);
43
44	tattr.data_size_out = 1;
45	err = bpf_prog_test_run_xattr(&tattr);
46	CHECK_ATTR(err != -EINVAL, "run_wrong_size_out", "err %d\n", err);
47
48	bpf_object__close(obj);
49}