// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>

void test_task_fd_query_rawtp(void)
{
        const char *file = "./test_get_stack_rawtp.bpf.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);
}