0b034d9d7b
Solve one more issue where privilege is required to open a file and
we do not want to grant such to the service. This is the client side
of the picture, init is the server. The file's descriptor was placed
into the environment as "ANDROID_FILE_<path>" where non-alpha and
non-numeric characters in the <path> are replaced with _ and this
function picks the file descriptor up.
Added definition ANDROID_FILE_ENV_PREFIX ("ANDROID_FILE_") and
android_get_control_file() prototype in a new include <cutils/files.h>
android_get_control_file() checks if the resulting file descriptor is
valid, open and matches the name reference, which on purpose will fail
if a symbolic link is in the path rather than using a fully qualified
path. Add gTest unit test for both.
Test: gTest libcutils_test --gtest_filter=FileTest.android_get_control_file
Bug: 32450474
Change-Id: I2d0310a1727f1e393a00d9fc7e6cf5d028f27905
144 lines
3.6 KiB
Text
144 lines
3.6 KiB
Text
//
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// Copyright (C) 2008 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// some files must not be compiled when building against Mingw
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// they correspond to features not used by our host development tools
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// which are also hard or even impossible to port to native Win32
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libcutils_nonwindows_sources = [
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"fs.c",
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"multiuser.c",
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"socket_inaddr_any_server_unix.c",
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"socket_local_client_unix.c",
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"socket_local_server_unix.c",
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"socket_loopback_server_unix.c",
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"socket_network_client_unix.c",
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"sockets_unix.cpp",
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"str_parms.c",
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]
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cc_library {
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name: "libcutils",
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host_supported: true,
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srcs: [
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"config_utils.c",
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"files.cpp",
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"fs_config.c",
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"canned_fs_config.c",
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"hashmap.c",
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"iosched_policy.c",
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"load_file.c",
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"native_handle.c",
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"open_memstream.c",
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"record_stream.c",
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"sched_policy.c",
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"sockets.cpp",
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"strdup16to8.c",
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"strdup8to16.c",
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"strlcpy.c",
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"threads.c",
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],
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target: {
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host: {
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srcs: ["dlmalloc_stubs.c"],
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},
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not_windows: {
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srcs: libcutils_nonwindows_sources + [
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"ashmem-host.c",
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"trace-host.c",
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],
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},
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windows: {
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srcs: [
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"socket_inaddr_any_server_windows.c",
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"socket_network_client_windows.c",
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"sockets_windows.cpp",
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],
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enabled: true,
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shared: {
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enabled: false,
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},
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},
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android: {
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srcs: libcutils_nonwindows_sources + [
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"android_reboot.c",
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"ashmem-dev.c",
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"debugger.c",
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"klog.cpp",
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"partition_utils.c",
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"properties.c",
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"qtaguid.c",
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"trace-dev.c",
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"uevent.c",
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],
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static_libs: ["libdebuggerd_client"],
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export_static_lib_headers: ["libdebuggerd_client"],
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},
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android_arm: {
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srcs: ["arch-arm/memset32.S"],
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},
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android_arm64: {
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srcs: ["arch-arm64/android_memset.S"],
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},
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android_mips: {
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srcs: ["arch-mips/android_memset.c"],
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},
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android_mips64: {
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srcs: ["arch-mips/android_memset.c"],
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},
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android_x86: {
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srcs: [
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"arch-x86/android_memset16.S",
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"arch-x86/android_memset32.S",
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],
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},
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android_x86_64: {
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srcs: [
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"arch-x86_64/android_memset16.S",
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"arch-x86_64/android_memset32.S",
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],
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},
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},
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shared_libs: ["liblog"],
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product_variables: {
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cpusets: {
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cflags: ["-DUSE_CPUSETS"],
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},
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schedboost: {
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cflags: ["-DUSE_SCHEDBOOST"],
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},
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},
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cflags: [
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"-Werror",
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"-Wall",
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"-Wextra",
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],
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clang: true,
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sanitize: {
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misc_undefined: ["integer"],
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},
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}
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subdirs = ["tests"]
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