| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "dlmalloc.h" |
| |
| /* Bionic error handling declarations */ |
| #define PROCEED_ON_ERROR 0 |
| static void __bionic_heap_error(const char* msg, const char* function, void* p); |
| #define CORRUPTION_ERROR_ACTION(m) \ |
| __bionic_heap_error("HEAP MEMORY CORRUPTION", __FUNCTION__, NULL) |
| #define USAGE_ERROR_ACTION(m,p) \ |
| __bionic_heap_error("ARGUMENT IS INVALID HEAP ADDRESS", __FUNCTION__, p) |
| |
| /* |
| * Ugly inclusion of C file so that bionic specific #defines configure |
| * dlmalloc. |
| */ |
| #include "../upstream-dlmalloc/malloc.c" |
| |
| |
| /* Bionic error handling definitions */ |
| /* Convert a pointer into hex string */ |
| static void __bionic_itox(char* hex, void* ptr) |
| { |
| intptr_t val = (intptr_t) ptr; |
| /* Terminate with NULL */ |
| hex[8] = 0; |
| int i; |
| |
| for (i = 7; i >= 0; i--) { |
| int digit = val & 15; |
| hex[i] = (digit <= 9) ? digit + '0' : digit - 10 + 'a'; |
| val >>= 4; |
| } |
| } |
| |
| #include <private/logd.h> |
| static void __bionic_heap_error(const char* msg, const char* function, void* p) |
| { |
| /* We format the buffer explicitely, i.e. without using snprintf() |
| * which may use malloc() internally. Not something we can trust |
| * if we just detected a corrupted heap. |
| */ |
| char buffer[256]; |
| strlcpy(buffer, "@@@ ABORTING: LIBC: ", sizeof(buffer)); |
| strlcat(buffer, msg, sizeof(buffer)); |
| if (function != NULL) { |
| strlcat(buffer, " IN ", sizeof(buffer)); |
| strlcat(buffer, function, sizeof(buffer)); |
| } |
| |
| if (p != NULL) { |
| char hexbuffer[9]; |
| __bionic_itox(hexbuffer, p); |
| strlcat(buffer, " addr=0x", sizeof(buffer)); |
| strlcat(buffer, hexbuffer, sizeof(buffer)); |
| } |
| |
| __libc_android_log_write(ANDROID_LOG_FATAL, "libc", buffer); |
| |
| /* So that we can get a memory dump around p */ |
| *((int **) 0xdeadbaad) = (int *) p; |
| } |