blob: 1f85fb53c7c103ceeea683e26cc51ff5a0f2ce41 [file] [log] [blame]
/*
* 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.
*/
#define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER
#include "NetlinkManager.h"
#include "VoldNativeService.h"
#include "VoldUtil.h"
#include "VolumeManager.h"
#include "model/Disk.h"
#include "sehandle.h"
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <cutils/klog.h>
#include <hidl/HidlTransportSupport.h>
#include <utils/Trace.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <fs_mgr.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
typedef struct vold_configs {
bool has_adoptable : 1;
bool has_quota : 1;
bool has_reserved : 1;
bool has_compress : 1;
} VoldConfigs;
static int process_config(VolumeManager* vm, VoldConfigs* configs);
static void coldboot(const char* path);
static void parse_args(int argc, char** argv);
struct selabel_handle* sehandle;
using android::base::StringPrintf;
using android::fs_mgr::ReadDefaultFstab;
int main(int argc, char** argv) {
atrace_set_tracing_enabled(false);
setenv("ANDROID_LOG_TAGS", "*:d", 1); // Do not submit with verbose logs enabled
android::base::InitLogging(argv, android::base::LogdLogger(android::base::SYSTEM));
LOG(INFO) << "Vold 3.0 (the awakening) firing up";
ATRACE_BEGIN("main");
LOG(DEBUG) << "Detected support for:"
<< (android::vold::IsFilesystemSupported("ext4") ? " ext4" : "")
<< (android::vold::IsFilesystemSupported("f2fs") ? " f2fs" : "")
<< (android::vold::IsFilesystemSupported("vfat") ? " vfat" : "");
VolumeManager* vm;
NetlinkManager* nm;
parse_args(argc, argv);
sehandle = selinux_android_file_context_handle();
if (sehandle) {
selinux_android_set_sehandle(sehandle);
}
mkdir("/dev/block/vold", 0755);
/* For when cryptfs checks and mounts an encrypted filesystem */
klog_set_level(6);
/* Create our singleton managers */
if (!(vm = VolumeManager::Instance())) {
LOG(ERROR) << "Unable to create VolumeManager";
exit(1);
}
if (!(nm = NetlinkManager::Instance())) {
LOG(ERROR) << "Unable to create NetlinkManager";
exit(1);
}
if (android::base::GetBoolProperty("vold.debug", false)) {
vm->setDebug(true);
}
if (vm->start()) {
PLOG(ERROR) << "Unable to start VolumeManager";
exit(1);
}
VoldConfigs configs = {};
if (process_config(vm, &configs)) {
PLOG(ERROR) << "Error reading configuration... continuing anyways";
}
android::hardware::configureRpcThreadpool(1, false /* callerWillJoin */);
ATRACE_BEGIN("VoldNativeService::start");
if (android::vold::VoldNativeService::start() != android::OK) {
LOG(ERROR) << "Unable to start VoldNativeService";
exit(1);
}
ATRACE_END();
LOG(DEBUG) << "VoldNativeService::start() completed OK";
ATRACE_BEGIN("NetlinkManager::start");
if (nm->start()) {
PLOG(ERROR) << "Unable to start NetlinkManager";
exit(1);
}
ATRACE_END();
// This call should go after listeners are started to avoid
// a deadlock between vold and init (see b/34278978 for details)
android::base::SetProperty("vold.has_adoptable", configs.has_adoptable ? "1" : "0");
android::base::SetProperty("vold.has_quota", configs.has_quota ? "1" : "0");
android::base::SetProperty("vold.has_reserved", configs.has_reserved ? "1" : "0");
android::base::SetProperty("vold.has_compress", configs.has_compress ? "1" : "0");
// Do coldboot here so it won't block booting,
// also the cold boot is needed in case we have flash drive
// connected before Vold launched
coldboot("/sys/block");
ATRACE_END();
android::IPCThreadState::self()->joinThreadPool();
LOG(INFO) << "vold shutting down";
exit(0);
}
static void parse_args(int argc, char** argv) {
static struct option opts[] = {
{"blkid_context", required_argument, 0, 'b'},
{"blkid_untrusted_context", required_argument, 0, 'B'},
{"fsck_context", required_argument, 0, 'f'},
{"fsck_untrusted_context", required_argument, 0, 'F'},
{nullptr, 0, nullptr, 0},
};
int c;
while ((c = getopt_long(argc, argv, "", opts, nullptr)) != -1) {
switch (c) {
// clang-format off
case 'b': android::vold::sBlkidContext = optarg; break;
case 'B': android::vold::sBlkidUntrustedContext = optarg; break;
case 'f': android::vold::sFsckContext = optarg; break;
case 'F': android::vold::sFsckUntrustedContext = optarg; break;
// clang-format on
}
}
CHECK(android::vold::sBlkidContext != nullptr);
CHECK(android::vold::sBlkidUntrustedContext != nullptr);
CHECK(android::vold::sFsckContext != nullptr);
CHECK(android::vold::sFsckUntrustedContext != nullptr);
}
static void do_coldboot(DIR* d, int lvl) {
struct dirent* de;
int dfd, fd;
dfd = dirfd(d);
fd = openat(dfd, "uevent", O_WRONLY | O_CLOEXEC);
if (fd >= 0) {
write(fd, "add\n", 4);
close(fd);
}
while ((de = readdir(d))) {
DIR* d2;
if (de->d_name[0] == '.') continue;
if (de->d_type != DT_DIR && lvl > 0) continue;
fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY | O_CLOEXEC);
if (fd < 0) continue;
d2 = fdopendir(fd);
if (d2 == 0)
close(fd);
else {
do_coldboot(d2, lvl + 1);
closedir(d2);
}
}
}
static void coldboot(const char* path) {
ATRACE_NAME("coldboot");
DIR* d = opendir(path);
if (d) {
do_coldboot(d, 0);
closedir(d);
}
}
static int process_config(VolumeManager* vm, VoldConfigs* configs) {
ATRACE_NAME("process_config");
if (!ReadDefaultFstab(&fstab_default)) {
PLOG(ERROR) << "Failed to open default fstab";
return -1;
}
/* Loop through entries looking for ones that vold manages */
configs->has_adoptable = false;
configs->has_quota = false;
configs->has_reserved = false;
configs->has_compress = false;
for (auto& entry : fstab_default) {
if (entry.fs_mgr_flags.quota) {
configs->has_quota = true;
}
if (entry.reserved_size > 0) {
configs->has_reserved = true;
}
if (entry.fs_mgr_flags.fs_compress) {
configs->has_compress = true;
}
/* Make sure logical partitions have an updated blk_device. */
if (entry.fs_mgr_flags.logical && !fs_mgr_update_logical_partition(&entry) &&
!entry.fs_mgr_flags.no_fail) {
PLOG(FATAL) << "could not find logical partition " << entry.blk_device;
}
if (entry.fs_mgr_flags.vold_managed) {
if (entry.fs_mgr_flags.nonremovable) {
LOG(WARNING) << "nonremovable no longer supported; ignoring volume";
continue;
}
std::string sysPattern(entry.blk_device);
std::string nickname(entry.label);
int flags = 0;
if (entry.is_encryptable()) {
flags |= android::vold::Disk::Flags::kAdoptable;
configs->has_adoptable = true;
}
if (entry.fs_mgr_flags.no_emulated_sd ||
android::base::GetBoolProperty("vold.debug.default_primary", false)) {
flags |= android::vold::Disk::Flags::kDefaultPrimary;
}
vm->addDiskSource(std::shared_ptr<VolumeManager::DiskSource>(
new VolumeManager::DiskSource(sysPattern, nickname, flags)));
}
}
return 0;
}