DivestOS/Patches/LineageOS-17.1/android_bionic/0001-HM-Use_HM.patch

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From 010949662f6579419dd310606bf1418dbd53a971 Mon Sep 17 00:00:00 2001
From: Daniel Micay <danielmicay@gmail.com>
Date: Wed, 5 Dec 2018 01:51:56 -0500
Subject: [PATCH] add hardened_malloc library
---
libc/Android.bp | 38 ++++++++++++++++++++-----
libc/bionic/h_malloc_wrapper.cpp | 49 ++++++++++++++++++++++++++++++++
libc/bionic/malloc_common.h | 8 ++++++
3 files changed, 88 insertions(+), 7 deletions(-)
create mode 100644 libc/bionic/h_malloc_wrapper.cpp
diff --git a/libc/Android.bp b/libc/Android.bp
index 47fccde7e..7c3f57fba 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -52,6 +52,8 @@ libc_common_flags = [
// Clang's exit-time destructor registration hides __dso_handle, but
// __dso_handle needs to have default visibility on ARM32. See b/73485611.
"-Wexit-time-destructors",
+
+ "-DH_MALLOC_PREFIX",
]
// Define some common cflags
@@ -65,9 +67,17 @@ cc_defaults {
cppflags: [],
include_dirs: [
"bionic/libc/async_safe/include",
- "external/jemalloc_new/include",
],
+ multilib: {
+ lib32: {
+ include_dirs: ["external/jemalloc_new/include"],
+ },
+ lib64: {
+ include_dirs: ["external/hardened_malloc/"],
+ },
+ },
+
stl: "none",
system_shared_libs: [],
sanitize: {
@@ -92,7 +102,6 @@ cc_defaults {
// TLS slot.
cc_library_static {
-
srcs: [
"bionic/__libc_init_main_thread.cpp",
"bionic/__stack_chk_fail.cpp",
@@ -1309,6 +1318,10 @@ cc_library_static {
multilib: {
lib32: {
srcs: libc_common_src_files_32,
+ whole_static_libs: ["libjemalloc5"],
+ },
+ lib64: {
+ whole_static_libs: ["libhardened_malloc"],
},
},
arch: {
@@ -1342,7 +1355,6 @@ cc_library_static {
"libc_syscalls",
"libc_tzcode",
"libm",
- "libjemalloc5",
"libstdc++",
],
}
@@ -1480,7 +1492,14 @@ cc_library_static {
// ========================================================
cc_library_static {
defaults: ["libc_defaults"],
- srcs: ["bionic/jemalloc_wrapper.cpp"],
+ multilib: {
+ lib32: {
+ srcs: ["bionic/jemalloc_wrapper.cpp"],
+ },
+ lib64: {
+ srcs: ["bionic/h_malloc_wrapper.cpp"],
+ },
+ },
cflags: ["-fvisibility=hidden"],
name: "libc_malloc",
@@ -1578,9 +1597,14 @@ cc_library {
static_libs: [
"libdl_android",
],
- whole_static_libs: [
- "libjemalloc5",
- ],
+ multilib: {
+ lib32: {
+ whole_static_libs: ["libjemalloc5"],
+ },
+ lib64: {
+ whole_static_libs: ["libhardened_malloc"],
+ },
+ },
nocrt: true,
diff --git a/libc/bionic/h_malloc_wrapper.cpp b/libc/bionic/h_malloc_wrapper.cpp
new file mode 100644
index 000000000..5733293a9
--- /dev/null
+++ b/libc/bionic/h_malloc_wrapper.cpp
@@ -0,0 +1,49 @@
+#include <errno.h>
+#include <malloc.h>
+#include <sys/param.h>
+#include <unistd.h>
+
+#include <private/MallocXmlElem.h>
+
+#include "h_malloc.h"
+
+__BEGIN_DECLS
+int h_malloc_info(int options, FILE* fp);
+__END_DECLS
+
+int h_malloc_info(int options, FILE* fp) {
+ if (options != 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ MallocXmlElem root(fp, "malloc", "version=\"jemalloc-1\"");
+
+ // Dump all of the large allocations in the arenas.
+ for (size_t i = 0; i < h_mallinfo_narenas(); i++) {
+ struct mallinfo mi = h_mallinfo_arena_info(i);
+ if (mi.hblkhd != 0) {
+ MallocXmlElem arena_elem(fp, "heap", "nr=\"%d\"", i);
+ {
+ MallocXmlElem(fp, "allocated-large").Contents("%zu", mi.ordblks);
+ MallocXmlElem(fp, "allocated-huge").Contents("%zu", mi.uordblks);
+ MallocXmlElem(fp, "allocated-bins").Contents("%zu", mi.fsmblks);
+
+ size_t total = 0;
+ for (size_t j = 0; j < h_mallinfo_nbins(); j++) {
+ struct mallinfo mi = h_mallinfo_bin_info(i, j);
+ if (mi.ordblks != 0) {
+ MallocXmlElem bin_elem(fp, "bin", "nr=\"%d\"", j);
+ MallocXmlElem(fp, "allocated").Contents("%zu", mi.ordblks);
+ MallocXmlElem(fp, "nmalloc").Contents("%zu", mi.uordblks);
+ MallocXmlElem(fp, "ndalloc").Contents("%zu", mi.fordblks);
+ total += mi.ordblks;
+ }
+ }
+ MallocXmlElem(fp, "bins-total").Contents("%zu", total);
+ }
+ }
+ }
+
+ return 0;
+}
diff --git a/libc/bionic/malloc_common.h b/libc/bionic/malloc_common.h
index 2176e634d..e2c1910d2 100644
--- a/libc/bionic/malloc_common.h
+++ b/libc/bionic/malloc_common.h
@@ -62,8 +62,16 @@ __END_DECLS
#else
+#ifdef __LP64__
+#include "h_malloc.h"
+#define Malloc(function) h_ ## function
+__BEGIN_DECLS
+int h_malloc_info(int options, FILE* fp);
+__END_DECLS
+#else
#include "jemalloc.h"
#define Malloc(function) je_ ## function
+#endif
#endif