static ext2_file_t do_ext2fs_open_file()

in fs/extfs/extfs.cpp [70:105]

• 36 lines of code
• 10 McCabe index (conditional complexity)

static ext2_file_t do_ext2fs_open_file(ext2_filsys fs, const char *path, unsigned int flags, unsigned int mode) {
    DEFER(LOG_DEBUG("open_file" , VALUE(path)));
    ext2_ino_t ino = string_to_inode(fs, path, !(flags & O_NOFOLLOW));
    errcode_t ret;
    if (ino == 0) {
        if (!(flags & O_CREAT)) {
            errno = ENOENT;
            return nullptr;
        }
        ret = create_file(fs, path, mode, &ino);
        if (ret) {
            LOG_ERROR_RETURN(-ret, nullptr, "failed to create file ", VALUE(ret), VALUE(path));
        }
    } else if (flags & O_EXCL) {
        errno = EEXIST;
        return nullptr;
    }
    if ((flags & O_DIRECTORY) && ext2fs_check_directory(fs, ino)) {
        errno = ENOTDIR;
        return nullptr;
    }
    ext2_file_t file;
    ret = ext2fs_file_open(fs, ino, extfs_open_flags(flags), &file);
    if (ret) {
        errno = -parse_extfs_error(fs, ino, ret);
        return nullptr;
    }
    if (flags & O_TRUNC) {
        ret = ext2fs_file_set_size2(file, 0);
        if (ret) {
            errno = -parse_extfs_error(fs, ino, ret);
            return nullptr;
        }
    }
    return file;
}