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/*
* Copyright (C) 2017 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 "rlimit_parser.h"
#include <android-base/parseint.h>
#include <android-base/strings.h>
using android::base::EqualsIgnoreCase;
using android::base::ParseInt;
using android::base::ParseUint;
using android::base::StartsWith;
namespace android {
namespace init {
// Builtins and service definitions both have their arguments start at 1 and finish at 3.
Result<std::pair<int, rlimit>> ParseRlimit(const std::vector<std::string>& args) {
static const std::vector<std::pair<const char*, int>> text_to_resources = {
{"cpu", 0}, {"fsize", 1}, {"data", 2}, {"stack", 3},
{"core", 4}, {"rss", 5}, {"nproc", 6}, {"nofile", 7},
{"memlock", 8}, {"as", 9}, {"locks", 10}, {"sigpending", 11},
{"msgqueue", 12}, {"nice", 13}, {"rtprio", 14}, {"rttime", 15},
};
int resource;
if (ParseInt(args[1], &resource)) {
if (resource >= RLIM_NLIMITS) {
return Error() << "Resource '" << args[1] << "' over the maximum resource value '"
<< RLIM_NLIMITS << "'";
} else if (resource < 0) {
return Error() << "Resource '" << args[1] << "' below the minimum resource value '0'";
}
} else {
std::string resource_string;
if (StartsWith(args[1], "RLIM_")) {
resource_string = args[1].substr(5);
} else {
resource_string = args[1];
}
auto it = std::find_if(text_to_resources.begin(), text_to_resources.end(),
[&resource_string](const auto& entry) {
return EqualsIgnoreCase(resource_string, entry.first);
});
if (it == text_to_resources.end()) {
return Error() << "Could not parse resource '" << args[1] << "'";
}
resource = it->second;
}
rlimit limit;
if (args[2] == "-1" || args[2] == "unlimited") {
limit.rlim_cur = RLIM_INFINITY;
} else if (!ParseUint(args[2], &limit.rlim_cur)) {
return Error() << "Could not parse soft limit '" << args[2] << "'";
}
if (args[3] == "-1" || args[3] == "unlimited") {
limit.rlim_max = RLIM_INFINITY;
} else if (!ParseUint(args[3], &limit.rlim_max)) {
return Error() << "Could not parse hard limit '" << args[3] << "'";
}
return std::pair{resource, limit};
}
} // namespace init
} // namespace android
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