9949ec5f56
Android-base has an implementation of the future std::expected<>. This provides the same baseline functionality as Result<>, so use it instead of our own version. Bug: 132145659 Test: boot, init unit tests Change-Id: I11e61bcb5719b262a6420483ed51a762826a9e23
84 lines
3 KiB
C++
84 lines
3 KiB
C++
/*
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* Copyright (C) 2017 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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#include "rlimit_parser.h"
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#include <android-base/parseint.h>
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#include <android-base/strings.h>
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using android::base::EqualsIgnoreCase;
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using android::base::ParseInt;
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using android::base::ParseUint;
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using android::base::StartsWith;
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namespace android {
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namespace init {
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// Builtins and service definitions both have their arguments start at 1 and finish at 3.
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Result<std::pair<int, rlimit>> ParseRlimit(const std::vector<std::string>& args) {
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static const std::vector<std::pair<const char*, int>> text_to_resources = {
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{"cpu", 0}, {"fsize", 1}, {"data", 2}, {"stack", 3},
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{"core", 4}, {"rss", 5}, {"nproc", 6}, {"nofile", 7},
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{"memlock", 8}, {"as", 9}, {"locks", 10}, {"sigpending", 11},
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{"msgqueue", 12}, {"nice", 13}, {"rtprio", 14}, {"rttime", 15},
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};
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int resource;
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if (ParseInt(args[1], &resource)) {
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if (resource >= RLIM_NLIMITS) {
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return Error() << "Resource '" << args[1] << "' over the maximum resource value '"
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<< RLIM_NLIMITS << "'";
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} else if (resource < 0) {
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return Error() << "Resource '" << args[1] << "' below the minimum resource value '0'";
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}
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} else {
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std::string resource_string;
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if (StartsWith(args[1], "RLIM_")) {
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resource_string = args[1].substr(5);
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} else {
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resource_string = args[1];
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}
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auto it = std::find_if(text_to_resources.begin(), text_to_resources.end(),
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[&resource_string](const auto& entry) {
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return EqualsIgnoreCase(resource_string, entry.first);
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});
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if (it == text_to_resources.end()) {
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return Error() << "Could not parse resource '" << args[1] << "'";
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}
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resource = it->second;
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}
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rlimit limit;
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if (args[2] == "-1" || args[2] == "unlimited") {
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limit.rlim_cur = RLIM_INFINITY;
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} else if (!ParseUint(args[2], &limit.rlim_cur)) {
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return Error() << "Could not parse soft limit '" << args[2] << "'";
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}
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if (args[3] == "-1" || args[3] == "unlimited") {
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limit.rlim_max = RLIM_INFINITY;
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} else if (!ParseUint(args[3], &limit.rlim_max)) {
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return Error() << "Could not parse hard limit '" << args[3] << "'";
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}
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return std::pair{resource, limit};
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}
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} // namespace init
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} // namespace android
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