/* 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); } } 51a180b02d56f9'>src/qcam/main.cpp

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