/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2019, Google Inc. * * v4l2_compat.cpp - V4L2 compatibility layer */ #include "v4l2_compat_manager.h" #include #include #include #include #include #include #define LIBCAMERA_PUBLIC __attribute__((visibility("default"))) using namespace libcamera; #define extract_va_arg(type, arg, last) \ { \ va_list ap; \ va_start(ap, last); \ arg = va_arg(ap, type); \ va_end(ap); \ } extern "C" { LIBCAMERA_PUBLIC int open(const char *path, int oflag, ...) { mode_t mode = 0; if (oflag & O_CREAT || oflag & O_TMPFILE) extract_va_arg(mode_t, mode, oflag); return V4L2CompatManager::instance()->openat(AT_FDCWD, path, oflag, mode); } /* _FORTIFY_SOURCE redirects open to __open_2 */ LIBCAMERA_PUBLIC int __open_2(const char *path, int oflag) { return open(path, oflag); } #ifndef open64 LIBCAMERA_PUBLIC int open64(const char *path, int oflag, ...) { mode_t mode = 0; if (oflag & O_CREAT || oflag & O_TMPFILE) extract_va_arg(mode_t, mode, oflag); return V4L2CompatManager::instance()->openat(AT_FDCWD, path, oflag | O_LARGEFILE, mode); } LIBCAMERA_PUBLIC int __open64_2(const char *path, int oflag) { return open(path, oflag); } #endif LIBCAMERA_PUBLIC int openat(int dirfd, const char *path, int oflag, ...) { mode_t mode = 0; if (oflag & O_CREAT || oflag & O_TMPFILE) extract_va_arg(mode_t, mode, oflag); return V4L2CompatManager::instance()->openat(dirfd, path, oflag, mode); } LIBCAMERA_PUBLIC int __openat_2(int dirfd, const char *path, int oflag) { return openat(dirfd, path, oflag); } #ifndef openat64 LIBCAMERA_PUBLIC int openat64(int dirfd, const char *path, int oflag, ...) { mode_t mode = 0; if (oflag & O_CREAT || oflag & O_TMPFILE) extract_va_arg(mode_t, mode, oflag); return V4L2CompatManager::instance()->openat(dirfd, path, oflag | O_LARGEFILE, mode); } LIBCAMERA_PUBLIC int __openat64_2(int dirfd, const char *path, int oflag) { return openat(dirfd, path, oflag); } #endif LIBCAMERA_PUBLIC int dup(int oldfd) { return V4L2CompatManager::instance()->dup(oldfd); } LIBCAMERA_PUBLIC int close(int fd) { return V4L2CompatManager::instance()->close(fd); } LIBCAMERA_PUBLIC void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) { return V4L2CompatManager::instance()->mmap(addr, length, prot, flags, fd, offset); } #ifndef mmap64 LIBCAMERA_PUBLIC void *mmap64(void *addr, size_t length, int prot, int flags, int fd, off64_t offset) { return V4L2CompatManager::instance()->mmap(addr, length, prot, flags, fd, offset); } #endif LIBCAMERA_PUBLIC int munmap(void *addr, size_t length) { return V4L2CompatManager::instance()->munmap(addr, length); } LIBCAMERA_PUBLIC int ioctl(int fd, unsigned long request, ...) { void *arg; extract_va_arg(void *, arg, request); return V4L2CompatManager::instance()->ioctl(fd, request, arg); } } (plain) 
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * shared_fd.cpp - SharedFD test
 */

#include <fcntl.h>
#include <iostream>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include <libcamera/base/shared_fd.h>
#include <libcamera/base/utils.h>

#include "test.h"

using namespace libcamera;
using namespace std;

class SharedFDTest : public Test
{
protected:
	int init()
	{
		desc1_ = nullptr;
		desc2_ = nullptr;

		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;
	}

	int run()
	{
		/* Test creating empty SharedFD. */
		desc1_ = new SharedFD();

		if (desc1_->get() != -1) {
			std::cout << "Failed fd numerical check (default constructor)"
				  << std::endl;
			return TestFail;
		}

		delete desc1_;
		desc1_ = nullptr;

		/*
		 * Test creating SharedFD by copying numerical file
		 * descriptor.
		 */
		desc1_ = new SharedFD(fd_);
		if (desc1_->get() == fd_) {
			std::cout << "Failed fd numerical check (lvalue ref constructor)"
				  << std::endl;
			return TestFail;
		}

		if (!isValidFd(fd_) || !isValidFd(desc1_->get())) {
			std::cout << "Failed fd validity after construction (lvalue ref constructor)"
				  << std::endl;
			return TestFail;
		}

		int fd = desc1_->get();

		delete desc1_;
		desc1_ = nullptr;

		if (!isValidFd(fd_) || isValidFd(fd)) {
			std::cout << "Failed fd validity after destruction (lvalue ref constructor)"
				  << std::endl;
			return TestFail;
		}

		/*
		 * Test creating SharedFD by taking ownership of
		 * numerical file descriptor.
		 */
		int dupFd = dup(fd_);
		int dupFdCopy = dupFd;

		desc1_ = new SharedFD(std::move(dupFd));
		if (desc1_->get() != dupFdCopy) {
			std::cout << "Failed fd numerical check (rvalue ref constructor)"
				  << std::endl;
			return TestFail;
		}

		if (dupFd != -1 || !isValidFd(fd_) || !isValidFd(desc1_->get())) {
			std::cout << "Failed fd validity after construction (rvalue ref constructor)"
				  << std::endl;
			return TestFail;
		}

		fd = desc1_->get();

		delete desc1_;
		desc1_ = nullptr;

		if (!isValidFd(fd_) || isValidFd(fd)) {
			std::cout << "Failed fd validity after destruction (rvalue ref constructor)"
				  << std::endl;
			return TestFail;
		}

		/* Test creating SharedFD from other SharedFD. */
		desc1_ = new SharedFD(fd_);
		desc2_ = new SharedFD(*desc1_);

		if (desc1_->get() == fd_ || desc2_->get() == fd_ ||
		    desc1_->get() != desc2_->get()) {
			std::cout << "Failed fd numerical check (copy constructor)"
				  << std::endl;
			return TestFail;
		}

		if (!isValidFd(desc1_->get()) || !isValidFd(desc2_->get())) {
			std::cout << "Failed fd validity after construction (copy constructor)"
				  << std::endl;
			return TestFail;
		}

		delete desc1_;
		desc1_ = nullptr;

		if (!isValidFd(desc2_->get())) {
			std::cout << "Failed fd validity after destruction (copy constructor)"
				  << std::endl;
			return TestFail;
		}

		delete desc2_;
		desc2_ = nullptr;

		/* Test creating SharedFD by taking over other SharedFD. */
		desc1_ = new SharedFD(fd_);