mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-27 08:29:31 -05:00
182 lines
4.8 KiB
Diff
182 lines
4.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Daniel Micay <danielmicay@gmail.com>
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Date: Wed, 5 Dec 2018 01:51:56 -0500
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Subject: [PATCH] add hardened_malloc library
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---
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libc/Android.bp | 38 ++++++++++++++++++++-----
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libc/bionic/h_malloc_wrapper.cpp | 49 ++++++++++++++++++++++++++++++++
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libc/bionic/malloc_common.h | 8 ++++++
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3 files changed, 88 insertions(+), 7 deletions(-)
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create mode 100644 libc/bionic/h_malloc_wrapper.cpp
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diff --git a/libc/Android.bp b/libc/Android.bp
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index 6031b1661..e7ca82f92 100644
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--- a/libc/Android.bp
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+++ b/libc/Android.bp
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@@ -53,6 +53,8 @@ libc_common_flags = [
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// Clang's exit-time destructor registration hides __dso_handle, but
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// __dso_handle needs to have default visibility on ARM32. See b/73485611.
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"-Wexit-time-destructors",
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+
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+ "-DH_MALLOC_PREFIX",
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]
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// Define some common cflags
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@@ -66,9 +68,17 @@ cc_defaults {
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cppflags: [],
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include_dirs: [
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"bionic/libc/async_safe/include",
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- "external/jemalloc_new/include",
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],
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+ multilib: {
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+ lib32: {
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+ include_dirs: ["external/jemalloc_new/include"],
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+ },
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+ lib64: {
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+ include_dirs: ["external/hardened_malloc/"],
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+ },
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+ },
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+
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stl: "none",
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system_shared_libs: [],
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sanitize: {
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@@ -93,7 +103,6 @@ cc_defaults {
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// TLS slot.
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cc_library_static {
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-
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srcs: [
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"bionic/__libc_init_main_thread.cpp",
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"bionic/__stack_chk_fail.cpp",
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@@ -1307,6 +1316,10 @@ cc_library_static {
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multilib: {
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lib32: {
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srcs: libc_common_src_files_32,
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+ whole_static_libs: ["libjemalloc5"],
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+ },
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+ lib64: {
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+ whole_static_libs: ["libhardened_malloc"],
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},
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},
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arch: {
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@@ -1340,7 +1353,6 @@ cc_library_static {
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"libc_syscalls",
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"libc_tzcode",
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"libm",
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- "libjemalloc5",
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"libstdc++",
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],
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}
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@@ -1478,7 +1490,14 @@ cc_library_static {
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// ========================================================
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cc_library_static {
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defaults: ["libc_defaults"],
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- srcs: ["bionic/jemalloc_wrapper.cpp"],
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+ multilib: {
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+ lib32: {
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+ srcs: ["bionic/jemalloc_wrapper.cpp"],
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+ },
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+ lib64: {
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+ srcs: ["bionic/h_malloc_wrapper.cpp"],
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+ },
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+ },
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cflags: ["-fvisibility=hidden"],
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name: "libc_malloc",
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@@ -1576,9 +1595,14 @@ cc_library {
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static_libs: [
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"libdl_android",
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],
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- whole_static_libs: [
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- "libjemalloc5",
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- ],
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+ multilib: {
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+ lib32: {
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+ whole_static_libs: ["libjemalloc5"],
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+ },
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+ lib64: {
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+ whole_static_libs: ["libhardened_malloc"],
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+ },
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+ },
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nocrt: true,
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diff --git a/libc/bionic/h_malloc_wrapper.cpp b/libc/bionic/h_malloc_wrapper.cpp
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new file mode 100644
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index 000000000..5733293a9
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--- /dev/null
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+++ b/libc/bionic/h_malloc_wrapper.cpp
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@@ -0,0 +1,49 @@
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+#include <errno.h>
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+#include <malloc.h>
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+#include <sys/param.h>
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+#include <unistd.h>
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+
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+#include <private/MallocXmlElem.h>
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+
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+#include "h_malloc.h"
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+
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+__BEGIN_DECLS
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+int h_malloc_info(int options, FILE* fp);
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+__END_DECLS
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+
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+int h_malloc_info(int options, FILE* fp) {
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+ if (options != 0) {
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+ errno = EINVAL;
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+ return -1;
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+ }
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+
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+ MallocXmlElem root(fp, "malloc", "version=\"jemalloc-1\"");
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+
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+ // Dump all of the large allocations in the arenas.
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+ for (size_t i = 0; i < h_mallinfo_narenas(); i++) {
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+ struct mallinfo mi = h_mallinfo_arena_info(i);
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+ if (mi.hblkhd != 0) {
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+ MallocXmlElem arena_elem(fp, "heap", "nr=\"%d\"", i);
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+ {
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+ MallocXmlElem(fp, "allocated-large").Contents("%zu", mi.ordblks);
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+ MallocXmlElem(fp, "allocated-huge").Contents("%zu", mi.uordblks);
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+ MallocXmlElem(fp, "allocated-bins").Contents("%zu", mi.fsmblks);
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+
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+ size_t total = 0;
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+ for (size_t j = 0; j < h_mallinfo_nbins(); j++) {
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+ struct mallinfo mi = h_mallinfo_bin_info(i, j);
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+ if (mi.ordblks != 0) {
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+ MallocXmlElem bin_elem(fp, "bin", "nr=\"%d\"", j);
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+ MallocXmlElem(fp, "allocated").Contents("%zu", mi.ordblks);
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+ MallocXmlElem(fp, "nmalloc").Contents("%zu", mi.uordblks);
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+ MallocXmlElem(fp, "ndalloc").Contents("%zu", mi.fordblks);
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+ total += mi.ordblks;
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+ }
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+ }
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+ MallocXmlElem(fp, "bins-total").Contents("%zu", total);
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+ }
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+ }
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+ }
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+
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+ return 0;
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+}
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diff --git a/libc/bionic/malloc_common.h b/libc/bionic/malloc_common.h
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index 2176e634d..e2c1910d2 100644
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--- a/libc/bionic/malloc_common.h
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+++ b/libc/bionic/malloc_common.h
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@@ -62,8 +62,16 @@ __END_DECLS
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#else
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+#ifdef __LP64__
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+#include "h_malloc.h"
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+#define Malloc(function) h_ ## function
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+__BEGIN_DECLS
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+int h_malloc_info(int options, FILE* fp);
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+__END_DECLS
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+#else
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#include "jemalloc.h"
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#define Malloc(function) je_ ## function
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+#endif
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#endif
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