| 1 | /* |
| 2 | * default_pipe_size_getter.c |
| 3 | * |
| 4 | * Tests suite for LTTng notification API (get default size of pipes) |
| 5 | * |
| 6 | * Copyright (C) 2021 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 7 | * |
| 8 | * SPDX-License-Identifier: MIT |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <unistd.h> |
| 13 | #include <fcntl.h> |
| 14 | #include <stdio.h> |
| 15 | #include <stdlib.h> |
| 16 | |
| 17 | #include <common/pipe.h> |
| 18 | #include <common/error.h> |
| 19 | |
| 20 | int lttng_opt_verbose; |
| 21 | int lttng_opt_mi; |
| 22 | int lttng_opt_quiet; |
| 23 | |
| 24 | int main(void) |
| 25 | { |
| 26 | int ret; |
| 27 | /* |
| 28 | * The event notifier pipes are not "special"; they are created using |
| 29 | * the lttng_pipe utility. Hence, this should be representative of a |
| 30 | * pipe created by the session daemon for event notifier messages to |
| 31 | * go through. |
| 32 | */ |
| 33 | struct lttng_pipe *pipe = lttng_pipe_open(0); |
| 34 | |
| 35 | if (!pipe) { |
| 36 | /* lttng_pipe_open already logs on error. */ |
| 37 | ret = EXIT_FAILURE; |
| 38 | goto end; |
| 39 | } |
| 40 | |
| 41 | ret = fcntl(lttng_pipe_get_writefd(pipe), F_GETPIPE_SZ); |
| 42 | if (ret < 0) { |
| 43 | PERROR("Failed to get the size of the pipe"); |
| 44 | ret = EXIT_FAILURE; |
| 45 | goto end; |
| 46 | } |
| 47 | |
| 48 | printf("%d\n", ret); |
| 49 | ret = EXIT_SUCCESS; |
| 50 | end: |
| 51 | lttng_pipe_destroy(pipe); |
| 52 | return ret; |
| 53 | } |