You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
147 lines
4.1 KiB
147 lines
4.1 KiB
/*
|
|
* Copyright (C) 2018 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.
|
|
*/
|
|
|
|
#include "QuotaUtils.h"
|
|
|
|
#include <fstream>
|
|
#include <unordered_map>
|
|
|
|
#include <sys/quota.h>
|
|
|
|
#include <android-base/logging.h>
|
|
|
|
#include "utils.h"
|
|
|
|
namespace android {
|
|
namespace installd {
|
|
|
|
namespace {
|
|
|
|
std::recursive_mutex mMountsLock;
|
|
|
|
/* Map of all quota mounts from target to source */
|
|
std::unordered_map<std::string, std::string> mQuotaReverseMounts;
|
|
|
|
std::string FindQuotaDeviceForUuid(const std::string& uuid) {
|
|
std::lock_guard<std::recursive_mutex> lock(mMountsLock);
|
|
auto path = create_data_path(uuid.empty() ? nullptr : uuid.c_str());
|
|
return mQuotaReverseMounts[path];
|
|
}
|
|
|
|
} // namespace
|
|
|
|
bool InvalidateQuotaMounts() {
|
|
std::lock_guard<std::recursive_mutex> lock(mMountsLock);
|
|
|
|
mQuotaReverseMounts.clear();
|
|
|
|
std::ifstream in("/proc/mounts");
|
|
if (!in.is_open()) {
|
|
return false;
|
|
}
|
|
|
|
std::string source;
|
|
std::string target;
|
|
std::string ignored;
|
|
while (!in.eof()) {
|
|
std::getline(in, source, ' ');
|
|
std::getline(in, target, ' ');
|
|
std::getline(in, ignored);
|
|
|
|
if (target.compare(0, 13, "/data_mirror/") == 0) {
|
|
continue;
|
|
}
|
|
|
|
if (source.compare(0, 11, "/dev/block/") == 0) {
|
|
struct dqblk dq;
|
|
if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0,
|
|
reinterpret_cast<char*>(&dq)) == 0) {
|
|
LOG(DEBUG) << "Found quota mount " << source << " at " << target;
|
|
mQuotaReverseMounts[target] = source;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool IsQuotaSupported(const std::string& uuid) {
|
|
return !FindQuotaDeviceForUuid(uuid).empty();
|
|
}
|
|
|
|
int64_t GetOccupiedSpaceForUid(const std::string& uuid, uid_t uid) {
|
|
const std::string device = FindQuotaDeviceForUuid(uuid);
|
|
if (device == "") {
|
|
return -1;
|
|
}
|
|
struct dqblk dq;
|
|
if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid,
|
|
reinterpret_cast<char*>(&dq)) != 0) {
|
|
if (errno != ESRCH) {
|
|
PLOG(ERROR) << "Failed to quotactl " << device << " for UID " << uid;
|
|
}
|
|
return -1;
|
|
} else {
|
|
#if MEASURE_DEBUG
|
|
LOG(DEBUG) << "quotactl() for UID " << uid << " " << dq.dqb_curspace;
|
|
#endif
|
|
return dq.dqb_curspace;
|
|
}
|
|
}
|
|
|
|
int64_t GetOccupiedSpaceForProjectId(const std::string& uuid, int projectId) {
|
|
const std::string device = FindQuotaDeviceForUuid(uuid);
|
|
if (device == "") {
|
|
return -1;
|
|
}
|
|
struct dqblk dq;
|
|
if (quotactl(QCMD(Q_GETQUOTA, PRJQUOTA), device.c_str(), projectId,
|
|
reinterpret_cast<char*>(&dq)) != 0) {
|
|
if (errno != ESRCH) {
|
|
PLOG(ERROR) << "Failed to quotactl " << device << " for Project ID " << projectId;
|
|
}
|
|
return -1;
|
|
} else {
|
|
#if MEASURE_DEBUG
|
|
LOG(DEBUG) << "quotactl() for Project ID " << projectId << " " << dq.dqb_curspace;
|
|
#endif
|
|
return dq.dqb_curspace;
|
|
}
|
|
}
|
|
|
|
int64_t GetOccupiedSpaceForGid(const std::string& uuid, gid_t gid) {
|
|
const std::string device = FindQuotaDeviceForUuid(uuid);
|
|
if (device == "") {
|
|
return -1;
|
|
}
|
|
struct dqblk dq;
|
|
if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), device.c_str(), gid,
|
|
reinterpret_cast<char*>(&dq)) != 0) {
|
|
if (errno != ESRCH) {
|
|
PLOG(ERROR) << "Failed to quotactl " << device << " for GID " << gid;
|
|
}
|
|
return -1;
|
|
} else {
|
|
#if MEASURE_DEBUG
|
|
LOG(DEBUG) << "quotactl() for GID " << gid << " " << dq.dqb_curspace;
|
|
#endif
|
|
return dq.dqb_curspace;
|
|
}
|
|
|
|
}
|
|
|
|
} // namespace installd
|
|
} // namespace android
|