tests/regression/abi0-conflict/fake-ust.c

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2021 Michael Jeanson <mjeanson@efficios.com>
   5  */
   6
   7 #include <stdio.h>
   8 #include <stdint.h>
   9
  10 #include "./fake-ust.h"
  11
  12 void init_usterr(void)
  13 {
  14         fprintf(stderr, "libfakeust0: init_usterr() called.\n");
  15 }
  16
  17 /*
  18  * The symbol used by liblttng-ust.so.1 to detect liblttng-ust.so.0 in a
  19  * process.
  20  */
  21 int ltt_probe_register(struct lttng_probe_desc *desc __attribute__((unused)))
  22 {
  23         fprintf(stderr, "libfakeust0: ltt_probe_register() called.\n");
  24         return 0;
  25 }
  26
  27 /*
  28  * This constructor calls the 'init_usterr' canary function which is provided
  29  * by liblttng-ust.so.1.
  30  */
  31 static
  32 void fake_ust_ctor(void)
  33         __attribute__((constructor));
  34 static void fake_ust_ctor(void)
  35 {
  36         init_usterr();
  37 }