1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <errno.h>
30 #include <stdio.h>
31
32 #include "scudo.h"
33 #include "private/bionic_globals.h"
34 #include "private/WriteProtected.h"
35
36 __LIBC_HIDDEN__ WriteProtected<libc_globals> __libc_globals;
37
38 // Call the libc malloc initialisers.
__scudo_preinit()39 __attribute__((constructor(1))) static void __scudo_preinit() {
40 __libc_globals.mutate(__libc_init_malloc);
41 }
42
43 extern "C" libc_shared_globals* __loader_shared_globals();
44
__libc_shared_globals()45 __LIBC_HIDDEN__ libc_shared_globals* __libc_shared_globals() {
46 return __loader_shared_globals();
47 }
48
49 #if defined(__i386__)
50 __LIBC_HIDDEN__ void* __libc_sysinfo = reinterpret_cast<void*>(__libc_int0x80);
51 #endif
52
scudo_malloc_disable_memory_tagging()53 extern "C" void scudo_malloc_disable_memory_tagging() {}
54
scudo_mallopt(int,int)55 int scudo_mallopt(int /*param*/, int /*value*/) {
56 return 0;
57 }
58
scudo_malloc_info(int,FILE *)59 int scudo_malloc_info(int /*options*/, FILE* /*fp*/) {
60 errno = ENOTSUP;
61 return -1;
62 }
63
scudo_malloc_iterate(uintptr_t,size_t,void (*)(uintptr_t,size_t,void *),void *)64 int scudo_malloc_iterate(uintptr_t, size_t, void (*)(uintptr_t, size_t, void*), void*) {
65 return 0;
66 }
67
scudo_malloc_disable()68 void scudo_malloc_disable() {
69 }
70
scudo_malloc_enable()71 void scudo_malloc_enable() {
72 }
73