1/*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "los_lms_pri.h"
33
34ATTRIBUTE_NO_SANITIZE_ADDRESS void LmsFree(void *ptr)
35{
36    if (ptr == NULL) {
37        return;
38    }
39
40    size_t allocSize = malloc_usable_size(ptr);
41    uintptr_t shadowAddr, offset;
42    LmsMem2Shadow((uintptr_t)ptr, &shadowAddr, &offset);
43
44    LmsLock(&g_lmsMutex);
45    if (LmsIsShadowAddrMapped(shadowAddr, shadowAddr) == LMS_OK) {
46        uint32_t acShadowValue;
47        LmsGetShadowValue((uintptr_t)ptr, &acShadowValue);
48        if (acShadowValue != LMS_SHADOW_ACCESSIBLE) {
49            char erroMode = (acShadowValue == LMS_SHADOW_AFTERFREE ? FREE_ERRORMODE : UNKNOWN_ERROR);
50            LmsReportError((uintptr_t)ptr, MEM_REGION_SIZE_1, erroMode);
51            goto UNLOCK_OUT;
52        }
53    } else {
54        LMS_OUTPUT_ERROR("Error! Free an unallocated memory:%p!\n", ptr);
55        goto UNLOCK_OUT;
56    }
57
58    __real_free(ptr);
59    LmsSetShadowValue((uintptr_t)ptr, (uintptr_t)ptr + allocSize, LMS_SHADOW_AFTERFREE_U8);
60
61UNLOCK_OUT:
62    LmsUnlock(&g_lmsMutex);
63}
64
65ATTRIBUTE_NO_SANITIZE_ADDRESS void *LmsMalloc(size_t size)
66{
67    void *ptr = __real_malloc(size);
68    if (ptr == NULL) {
69        return ptr;
70    }
71    return LmsTagMem(ptr, size);
72}
73
74ATTRIBUTE_NO_SANITIZE_ADDRESS void *LmsRealloc(void *ptr, size_t size)
75{
76    void *p = __real_realloc(ptr, size);
77    if (p == NULL) {
78        return p;
79    }
80    return LmsTagMem(p, size);
81}
82
83ATTRIBUTE_NO_SANITIZE_ADDRESS void *LmsCalloc(size_t m, size_t n)
84{
85    void *p = __real_calloc(m, n);
86    if (p == NULL) {
87        return p;
88    }
89    return LmsTagMem(p, n * m);
90}
91
92ATTRIBUTE_NO_SANITIZE_ADDRESS void *LmsValloc(size_t size)
93{
94    void *p = __real_valloc(size);
95    if (p == NULL) {
96        return p;
97    }
98    return LmsTagMem(p, size);
99}
100
101ATTRIBUTE_NO_SANITIZE_ADDRESS void *LmsAlignedAlloc(size_t align, size_t len)
102{
103    void *p = __real_aligned_alloc(align, len);
104    if (p == NULL) {
105        return p;
106    }
107    return LmsTagMem(p, len);
108}
109
110ATTRIBUTE_NO_SANITIZE_ADDRESS void *__wrap_aligned_alloc(size_t align, size_t len)
111{
112    return LmsAlignedAlloc(align, len);
113}
114
115ATTRIBUTE_NO_SANITIZE_ADDRESS void *__wrap_valloc(size_t size)
116{
117    return LmsValloc(size);
118}
119
120ATTRIBUTE_NO_SANITIZE_ADDRESS void *__wrap_calloc(size_t m, size_t n)
121{
122    return LmsCalloc(m, n);
123}
124
125ATTRIBUTE_NO_SANITIZE_ADDRESS void *__wrap_realloc(void *p, size_t n)
126{
127    return LmsRealloc(p, n);
128}
129
130ATTRIBUTE_NO_SANITIZE_ADDRESS void *__wrap_malloc(size_t size)
131{
132    return LmsMalloc(size);
133}
134
135ATTRIBUTE_NO_SANITIZE_ADDRESS void __wrap_free(void *ptr)
136{
137    return LmsFree(ptr);
138}
139
140ATTRIBUTE_NO_SANITIZE_ADDRESS void *LmsMemset(void *p, int n, size_t size)
141{
142    __asan_storeN_noabort((uintptr_t)p, size);
143
144    return __real_memset(p, n, size);
145}
146
147ATTRIBUTE_NO_SANITIZE_ADDRESS void *__wrap_memset(void *p, int n, size_t size)
148{
149    return LmsMemset(p, n, size);
150}
151
152ATTRIBUTE_NO_SANITIZE_ADDRESS void *LmsMemcpy(void *__restrict dest, const void *__restrict src, size_t size)
153{
154    __asan_loadN_noabort((uintptr_t)src, size);
155    __asan_storeN_noabort((uintptr_t)dest, size);
156
157    return __real_memcpy(dest, src, size);
158}
159
160ATTRIBUTE_NO_SANITIZE_ADDRESS void *__wrap_memcpy(void *__restrict dest, const void *__restrict src, size_t size)
161{
162    return LmsMemcpy(dest, src, size);
163}
164
165ATTRIBUTE_NO_SANITIZE_ADDRESS void *LmsMemmove(void *dest, const void *src, size_t len)
166{
167    __asan_loadN_noabort((uintptr_t)src, len);
168    __asan_storeN_noabort((uintptr_t)dest, len);
169
170    return __real_memmove(dest, src, len);
171}
172
173ATTRIBUTE_NO_SANITIZE_ADDRESS void *__wrap_memmove(void *dest, const void *src, size_t len)
174{
175    return LmsMemmove(dest, src, len);
176}
177
178ATTRIBUTE_NO_SANITIZE_ADDRESS char *LmsStrcat(char *s, const char *append)
179{
180    if ((s == NULL) || (append == NULL)) {
181        return NULL;
182    }
183
184    char *save = s;
185    for (; *s != '\0'; ++s) {
186    }
187    LmsCheckValid(s, append);
188
189    return __real_strcat(save, append);
190}
191
192ATTRIBUTE_NO_SANITIZE_ADDRESS char *__wrap_strcat(char *s, const char *append)
193{
194    return LmsStrcat(s, append);
195}
196
197ATTRIBUTE_NO_SANITIZE_ADDRESS char *LmsStrcpy(char *dest, const char *src)
198{
199    if ((dest == NULL) || (src == NULL)) {
200        return NULL;
201    }
202
203    LmsCheckValid(dest, src);
204    return __real_strcpy(dest, src);
205}
206
207ATTRIBUTE_NO_SANITIZE_ADDRESS char *__wrap_strcpy(char *dest, const char *src)
208{
209    return LmsStrcpy(dest, src);
210}