C++ (Cpp) of_set_rwの例

コード例 #1

ファイル: hostaudio_kern.c プロジェクト: gnensis/linux-2.6.15

static int hostmixer_open_mixdev(struct inode *inode, struct file *file)
{
        struct hostmixer_state *state;
        int r = 0, w = 0;
        int ret;

#ifdef DEBUG
        printk("hostmixer: open called (host: %s)\n", mixer);
#endif

        state = kmalloc(sizeof(struct hostmixer_state), GFP_KERNEL);
        if(state == NULL) return(-ENOMEM);

        if(file->f_mode & FMODE_READ) r = 1;
        if(file->f_mode & FMODE_WRITE) w = 1;

	ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
        
        if(ret < 0){
		printk("hostaudio_open_mixdev failed to open '%s', err = %d\n",
		       dsp, -ret);
		kfree(state);
		return(ret);
        }

        file->private_data = state;
        return(0);
}

コード例 #2

ファイル: hostaudio_kern.c プロジェクト: 020gzh/linux

static int hostaudio_open(struct inode *inode, struct file *file)
{
	struct hostaudio_state *state;
	int r = 0, w = 0;
	int ret;

#ifdef DEBUG
	kernel_param_lock(THIS_MODULE);
	printk(KERN_DEBUG "hostaudio: open called (host: %s)\n", dsp);
	kernel_param_unlock(THIS_MODULE);
#endif

	state = kmalloc(sizeof(struct hostaudio_state), GFP_KERNEL);
	if (state == NULL)
		return -ENOMEM;

	if (file->f_mode & FMODE_READ)
		r = 1;
	if (file->f_mode & FMODE_WRITE)
		w = 1;

	kernel_param_lock(THIS_MODULE);
	mutex_lock(&hostaudio_mutex);
	ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
	mutex_unlock(&hostaudio_mutex);
	kernel_param_unlock(THIS_MODULE);

	if (ret < 0) {
		kfree(state);
		return ret;
	}
	state->fd = ret;
	file->private_data = state;
	return 0;
}

コード例 #3

ファイル: hostaudio_kern.c プロジェクト: gnensis/linux-2.6.15

static int hostaudio_open(struct inode *inode, struct file *file)
{
        struct hostaudio_state *state;
        int r = 0, w = 0;
        int ret;

#ifdef DEBUG
        printk("hostaudio: open called (host: %s)\n", dsp);
#endif

        state = kmalloc(sizeof(struct hostaudio_state), GFP_KERNEL);
        if(state == NULL)
		return(-ENOMEM);

        if(file->f_mode & FMODE_READ) r = 1;
        if(file->f_mode & FMODE_WRITE) w = 1;

	ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
        if(ret < 0){
		kfree(state);
		return(ret);
        }

	state->fd = ret;
        file->private_data = state;
        return(0);
}

コード例 #4

ファイル: hostaudio_kern.c プロジェクト: 020gzh/linux

static int hostmixer_open_mixdev(struct inode *inode, struct file *file)
{
	struct hostmixer_state *state;
	int r = 0, w = 0;
	int ret;

#ifdef DEBUG
	printk(KERN_DEBUG "hostmixer: open called (host: %s)\n", mixer);
#endif

	state = kmalloc(sizeof(struct hostmixer_state), GFP_KERNEL);
	if (state == NULL)
		return -ENOMEM;

	if (file->f_mode & FMODE_READ)
		r = 1;
	if (file->f_mode & FMODE_WRITE)
		w = 1;

	kernel_param_lock(THIS_MODULE);
	mutex_lock(&hostaudio_mutex);
	ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
	mutex_unlock(&hostaudio_mutex);
	kernel_param_unlock(THIS_MODULE);

	if (ret < 0) {
		kernel_param_lock(THIS_MODULE);
		printk(KERN_ERR "hostaudio_open_mixdev failed to open '%s', "
		       "err = %d\n", dsp, -ret);
		kernel_param_unlock(THIS_MODULE);
		kfree(state);
		return ret;
	}

	file->private_data = state;
	return 0;
}