mirror of
https://github.com/chromium/crashpad.git
synced 2024-12-31 01:43:03 +08:00
63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
|
// Copyright 2017 The Crashpad Authors. All rights reserved.
|
||
|
|
//
|
||
|
|
// 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 "util/linux/auxiliary_vector.h"
|
||
|
|
|
||
|
|
#include <linux/auxvec.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
#include "base/files/file_path.h"
|
||
|
|
#include "base/logging.h"
|
||
|
|
#include "util/file/file_reader.h"
|
||
|
|
#include "util/stdlib/map_insert.h"
|
||
|
|
|
||
|
|
namespace crashpad {
|
||
|
|
|
||
|
|
AuxiliaryVector::AuxiliaryVector() : values_() {}
|
||
|
|
|
||
|
|
AuxiliaryVector::~AuxiliaryVector() {}
|
||
|
|
|
||
|
|
bool AuxiliaryVector::Initialize(pid_t pid, bool is_64_bit) {
|
||
|
|
return is_64_bit ? Read<uint64_t>(pid) : Read<uint32_t>(pid);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename ULong>
|
||
|
|
bool AuxiliaryVector::Read(pid_t pid) {
|
||
|
|
char path[32];
|
||
|
|
snprintf(path, sizeof(path), "/proc/%d/auxv", pid);
|
||
|
|
FileReader aux_file;
|
||
|
|
if (!aux_file.Open(base::FilePath(path))) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
ULong type;
|
||
|
|
ULong value;
|
||
|
|
while (aux_file.ReadExactly(&type, sizeof(type)) &&
|
||
|
|
aux_file.ReadExactly(&value, sizeof(value))) {
|
||
|
|
if (type == AT_NULL && value == 0) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
if (type == AT_IGNORE) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
if (!MapInsertOrReplace(&values_, type, value, nullptr)) {
|
||
|
|
LOG(ERROR) << "duplicate auxv entry";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace crashpad
|