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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);
}
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