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Refactor: move device utility functions to villas util

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Signed-off-by: Pascal Bauer <pascal.bauer@rwth-aachen.de>
This commit is contained in:
Pascal Bauer 2024-09-23 17:12:16 +02:00
parent 6e7c9c61d9
commit 80d794223c
6 changed files with 44 additions and 53 deletions
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4
common/include/villas/utils.hpp
View file

@ -11,6 +11,7 @@
#include <list>
#include <string>
#include <vector>
#include <filesystem>
#include <cassert>
#include <cstdint>
@ -211,6 +212,9 @@ template <class... Ts> struct overloaded : Ts... {
// explicit deduction guide (not needed as of C++20)
template <class... Ts> overloaded(Ts...) -> overloaded<Ts...>;
void write_to_file(std::string data, const std::filesystem::path file);
std::vector<std::string> read_names_in_directory(const std::string &name);
namespace base64 {
using byte = std::uint8_t;

1
common/lib/CMakeLists.txt
View file

@ -43,7 +43,6 @@ if(CMAKE_SYSTEM_NAME STREQUAL Linux)
kernel/devices/ip_device.cpp
kernel/devices/pci_device.cpp
kernel/devices/platform_device.cpp
kernel/devices/utils.cpp
kernel/vfio_device.cpp
kernel/vfio_group.cpp
kernel/vfio_container.cpp

4
common/lib/kernel/devices/generic_driver.cpp
View file

@ -9,10 +9,10 @@
#include <villas/kernel/devices/generic_driver.hpp>
#include <villas/kernel/devices/device.hpp>
#include <villas/kernel/devices/utils.hpp>
#include <villas/utils.hpp>
using villas::kernel::devices::Device, villas::kernel::devices::GenericDriver;
using villas::kernel::devices::utils::write_to_file;
using villas::utils::write_to_file;
void GenericDriver::attach(const Device &device) const {
if (device.driver().has_value()) {

5
common/lib/kernel/devices/platform_device.cpp
View file

@ -6,12 +6,13 @@
* SPDX-License-Identifier: Apache-2.0
*/
#include <villas/kernel/devices/platform_device.hpp>
#include <villas/kernel/devices/generic_driver.hpp>
#include <villas/kernel/devices/platform_device.hpp>
#include <villas/utils.hpp>
using villas::kernel::devices::Driver, villas::kernel::devices::GenericDriver;
using villas::kernel::devices::PlatformDevice;
using villas::kernel::devices::utils::write_to_file;
using villas::utils::write_to_file;
std::optional<std::unique_ptr<Driver>> PlatformDevice::driver() const {
std::filesystem::path driver_symlink =

48
common/lib/kernel/devices/utils.cpp
View file

@ -1,48 +0,0 @@
/* Utils
*
* Author: Pascal Bauer <pascal.bauer@rwth-aachen.de>
*
* SPDX-FileCopyrightText: 2023-2024 Pascal Bauer <pascal.bauer@rwth-aachen.de>
* SPDX-License-Identifier: Apache-2.0
*/
#include <dirent.h>
#include <filesystem>
#include <fstream>
#include <iostream>
#include <villas/kernel/devices/utils.hpp>
#include <villas/log.hpp>
namespace utils = villas::kernel::devices::utils;
void utils::write_to_file(std::string data, const std::filesystem::path file) {
villas::Log::get("Filewriter")->debug("{} > {}", data, file.u8string());
std::ofstream outputFile(file.u8string());
if (outputFile.is_open()) {
// Write to file
outputFile << data;
outputFile.close();
} else {
throw std::filesystem::filesystem_error("Cannot open outputfile",
std::error_code());
}
}
std::vector<std::string>
utils::read_names_in_directory(const std::string &name) {
DIR *directory = opendir(name.c_str());
struct dirent *dp;
std::vector<std::string> names;
dp = readdir(directory);
while (dp != NULL) {
auto name = std::string(dp->d_name);
if (name != "." && name != "..") {
names.push_back(name);
}
dp = readdir(directory);
}
closedir(directory);
return names;
}

35
common/lib/utils.cpp
View file

@ -17,7 +17,11 @@
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <dirent.h>
#include <fcntl.h>
#include <filesystem>
#include <fstream>
#include <iostream>
#include <pthread.h>
#include <unistd.h>
@ -351,5 +355,36 @@ bool isPrivileged() {
return true;
}
void write_to_file(std::string data, const std::filesystem::path file) {
villas::Log::get("Filewriter")->debug("{} > {}", data, file.u8string());
std::ofstream outputFile(file.u8string());
if (outputFile.is_open()) {
// Write to file
outputFile << data;
outputFile.close();
} else {
throw std::filesystem::filesystem_error("Cannot open outputfile",
std::error_code());
}
}
std::vector<std::string> read_names_in_directory(const std::string &name) {
DIR *directory = opendir(name.c_str());
struct dirent *dp;
std::vector<std::string> names;
dp = readdir(directory);
while (dp != NULL) {
auto name = std::string(dp->d_name);
if (name != "." && name != "..") {
names.push_back(name);
}
dp = readdir(directory);
}
closedir(directory);
return names;
}
} // namespace utils
} // namespace villas