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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2021, Google Inc.
*
* unique-fd.cpp - UniqueFD test
*/
#include <fcntl.h>
#include <iostream>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <libcamera/base/unique_fd.h>
#include <libcamera/base/utils.h>
#include "test.h"
using namespace libcamera;
using namespace std;
class UniqueFDTest : public Test
{
protected:
int init() override
{
return createFd();
}
int run() override
{
/* Test creating empty UniqueFD. */
UniqueFD fd;
if (fd.isValid() || fd.get() != -1) {
std::cout << "Failed fd check (default constructor)"
<< std::endl;
return TestFail;
}
/* Test creating UniqueFD from numerical file descriptor. */
UniqueFD fd2(fd_);
if (!fd2.isValid() || fd2.get() != fd_) {
std::cout << "Failed fd check (fd constructor)"
<< std::endl;
return TestFail;
}
if (!isValidFd(fd_)) {
std::cout << "Failed fd validity (fd constructor)"
<< std::endl;
return TestFail;
}
/* Test move constructor. */
UniqueFD fd3(std::move(fd2));
if (!fd3.isValid() || fd3.get() != fd_) {
std::cout << "Failed fd check (move constructor)"
<< std::endl;
return TestFail;
}
if (fd2.isValid() || fd2.get() != -1) {
std::cout << "Failed moved fd check (move constructor)"
<< std::endl;
return TestFail;
}
if (!isValidFd(fd_)) {
std::cout << "Failed fd validity (move constructor)"
<< std::endl;
return TestFail;
}
/* Test move assignment operator. */
fd = std::move(fd3);
if (!fd.isValid() || fd.get() != fd_) {
std::cout << "Failed fd check (move assignment)"
<< std::endl;
return TestFail;
}
if (fd3.isValid() || fd3.get() != -1) {
std::cout << "Failed moved fd check (move assignment)"
<< std::endl;
return TestFail;
}
if (!isValidFd(fd_)) {
std::cout << "Failed fd validity (move assignment)"
<< std::endl;
return TestFail;
}
/* Test swapping. */
fd2.swap(fd);
if (!fd2.isValid() || fd2.get() != fd_) {
std::cout << "Failed fd check (swap)"
<< std::endl;
return TestFail;
}
if (fd.isValid() || fd.get() != -1) {
std::cout << "Failed swapped fd check (swap)"
<< std::endl;
return TestFail;
}
if (!isValidFd(fd_)) {
std::cout << "Failed fd validity (swap)"
<< std::endl;
return TestFail;
}
/* Test release. */
int numFd = fd2.release();
if (fd2.isValid() || fd2.get() != -1) {
std::cout << "Failed fd check (release)"
<< std::endl;
return TestFail;
}
if (numFd != fd_) {
std::cout << "Failed released fd check (release)"
<< std::endl;
return TestFail;
}
if (!isValidFd(fd_)) {
std::cout << "Failed fd validity (release)"
<< std::endl;
return TestFail;
}
/* Test reset assignment. */
fd.reset(numFd);
if (!fd.isValid() || fd.get() != fd_) {
std::cout << "Failed fd check (reset assignment)"
<< std::endl;
return TestFail;
}
if (!isValidFd(fd_)) {
std::cout << "Failed fd validity (reset assignment)"
<< std::endl;
return TestFail;
}
/* Test reset destruction. */
fd.reset();
if (fd.isValid() || fd.get() != -1) {
std::cout << "Failed fd check (reset destruction)"
<< std::endl;
return TestFail;
}
if (isValidFd(fd_)) {
std::cout << "Failed fd validity (reset destruction)"
<< std::endl;
return TestFail;
}
/* Test destruction. */
if (createFd() == TestFail) {
std::cout << "Failed to recreate test fd"
<< std::endl;
return TestFail;
}
{
UniqueFD fd4(fd_);
}
if (isValidFd(fd_)) {
std::cout << "Failed fd validity (destruction)"
<< std::endl;
return TestFail;
}
return TestPass;
}
void cleanup() override
{
if (fd_ > 0)
close(fd_);
}
private:
int createFd()
{
fd_ = open("/tmp", O_TMPFILE | O_RDWR, S_IRUSR | S_IWUSR);
if (fd_ < 0)
return TestFail;
/* Cache inode number of temp file. */
struct stat s;
if (fstat(fd_, &s))
return TestFail;
inodeNr_ = s.st_ino;
return 0;
}
bool isValidFd(int fd)
{
struct stat s;
if (fstat(fd, &s))
return false;
/* Check that inode number matches cached temp file. */
return s.st_ino == inodeNr_;
}
int fd_;
ino_t inodeNr_;
};
TEST_REGISTER(UniqueFDTest)
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