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/*
* Copyright (C) 2016 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 LOG_TAG "DEBUG"
#include "libdebuggerd/open_files_list.h"
#include <dirent.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <string>
#include <utility>
#include <vector>
#include <android-base/file.h>
#include <log/log.h>
#include "libdebuggerd/utility.h"
void populate_open_files_list(pid_t pid, OpenFilesList* list) {
std::string fd_dir_name = "/proc/" + std::to_string(pid) + "/fd";
std::unique_ptr<DIR, int (*)(DIR*)> dir(opendir(fd_dir_name.c_str()), closedir);
if (dir == nullptr) {
ALOGE("failed to open directory %s: %s", fd_dir_name.c_str(), strerror(errno));
return;
}
struct dirent* de;
while ((de = readdir(dir.get())) != nullptr) {
if (*de->d_name == '.') {
continue;
}
int fd = atoi(de->d_name);
std::string path = fd_dir_name + "/" + std::string(de->d_name);
std::string target;
if (android::base::Readlink(path, &target)) {
list->emplace_back(fd, target);
} else {
ALOGE("failed to readlink %s: %s", path.c_str(), strerror(errno));
list->emplace_back(fd, "???");
}
}
}
void dump_open_files_list_to_log(const OpenFilesList& files, log_t* log, const char* prefix) {
for (auto& file : files) {
_LOG(log, logtype::OPEN_FILES, "%sfd %i: %s\n", prefix, file.first, file.second.c_str());
}
}
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