platform_system_core/libcutils/Android.bp
Joel Fernandes 519440468b Add support for memfd
This patch adds support to make libcutils create and use memfd where
possible, instead of ashmem.

The libcutils library is made dynamic, since apps are still sending over
ashmem FDs to processes and we are working on moving those apps away
from ashmem. The best we can do for that is make the library work, and
force apps in the long run to move away from directly using ashmem.

Due to further complications mentioned in the 'NOTE' section of the
patch, memfd is kept disabled for now, so nothing changes yet. To enable
it, set the sys.use_memfd property (check user_debug build).

Bug: 113362644
Change-Id: I491cb7841b664db5b1c26b3e07a440a14810e182
Signed-off-by: Joel Fernandes <joelaf@google.com>
2019-02-07 00:40:13 +00:00

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//
// Copyright (C) 2008 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.
//
// some files must not be compiled when building against Mingw
// they correspond to features not used by our host development tools
// which are also hard or even impossible to port to native Win32
libcutils_nonwindows_sources = [
"android_get_control_file.cpp",
"fs.cpp",
"hashmap.cpp",
"multiuser.cpp",
"socket_inaddr_any_server_unix.cpp",
"socket_local_client_unix.cpp",
"socket_local_server_unix.cpp",
"socket_network_client_unix.cpp",
"sockets_unix.cpp",
"str_parms.cpp",
]
cc_library_headers {
name: "libcutils_headers",
vendor_available: true,
recovery_available: true,
host_supported: true,
export_include_dirs: ["include"],
target: {
vendor: {
override_export_include_dirs: ["include_vndk"],
},
linux_bionic: {
enabled: true,
},
windows: {
enabled: true,
},
},
}
cc_library {
name: "libcutils",
vendor_available: true,
vndk: {
enabled: true,
support_system_process: true,
},
recovery_available: true,
host_supported: true,
srcs: [
"config_utils.cpp",
"fs_config.cpp",
"canned_fs_config.cpp",
"iosched_policy.cpp",
"load_file.cpp",
"native_handle.cpp",
"record_stream.cpp",
"sockets.cpp",
"strdup16to8.cpp",
"strdup8to16.cpp",
"strlcpy.c",
"threads.cpp",
],
target: {
linux_bionic: {
enabled: true,
},
not_windows: {
srcs: libcutils_nonwindows_sources + [
"ashmem-host.cpp",
"trace-host.cpp",
],
},
windows: {
srcs: [
"socket_inaddr_any_server_windows.cpp",
"socket_network_client_windows.cpp",
"sockets_windows.cpp",
"trace-host.cpp",
],
enabled: true,
shared: {
enabled: false,
},
cflags: [
"-D_GNU_SOURCE",
],
},
android: {
srcs: libcutils_nonwindows_sources + [
"android_reboot.cpp",
"ashmem-dev.cpp",
"klog.cpp",
"partition_utils.cpp",
"properties.cpp",
"qtaguid.cpp",
"trace-dev.cpp",
"uevent.cpp",
],
},
android_arm: {
srcs: ["arch-arm/memset32.S"],
sanitize: {
misc_undefined: ["integer"],
},
},
android_arm64: {
srcs: ["arch-arm64/android_memset.S"],
sanitize: {
misc_undefined: ["integer"],
},
},
android_mips: {
srcs: ["arch-mips/android_memset.c"],
sanitize: {
misc_undefined: ["integer"],
},
},
android_mips64: {
srcs: ["arch-mips/android_memset.c"],
sanitize: {
misc_undefined: ["integer"],
},
},
android_x86: {
srcs: [
"arch-x86/android_memset16.S",
"arch-x86/android_memset32.S",
],
// TODO: This is to work around b/29412086.
// Remove once __mulodi4 is available and move the "sanitize" block
// to the android target.
sanitize: {
misc_undefined: [],
},
},
android_x86_64: {
srcs: [
"arch-x86_64/android_memset16.S",
"arch-x86_64/android_memset32.S",
],
sanitize: {
misc_undefined: ["integer"],
},
},
vendor: {
exclude_srcs: [
// qtaguid.cpp loads libnetd_client.so with dlopen(). Since
// the interface of libnetd_client.so may vary between AOSP
// releases, exclude qtaguid.cpp from the VNDK-SP variant.
"qtaguid.cpp",
],
}
},
shared_libs: [
"liblog",
"libbase",
],
header_libs: [
"libbase_headers",
"libcutils_headers",
"libutils_headers",
"libprocessgroup_headers",
],
export_header_lib_headers: [
"libcutils_headers",
"libprocessgroup_headers",
],
local_include_dirs: ["include"],
cflags: [
"-Werror",
"-Wall",
"-Wextra",
],
}
subdirs = ["tests"]