Exemplos de fill_read_buffer em C++ (Cpp)

Exemplo n.º 1

Arquivo: file.c Projeto: vmayoral/snappy-kernel

static ssize_t
configfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
    struct configfs_buffer * buffer = file->private_data;
    struct configfs_dirent *sd;
    ssize_t retval = 0;

    sd = file->f_path.dentry->d_fsdata;
    if (WARN_ON(sd == NULL))
        return -EINVAL;

    if (WARN_ON(!(sd->s_type & CONFIGFS_ITEM_ATTR)))
        return -EINVAL;

    mutex_lock(&buffer->mutex);
    if (buffer->needs_read_fill) {
        if ((retval = fill_read_buffer(file->f_path.dentry,buffer)))
            goto out;
    }
    pr_debug("%s: count = %zd, ppos = %lld, buf = %s\n",
             __func__, count, *ppos, buffer->page);
    retval = simple_read_from_buffer(buf, count, ppos, buffer->page,
                                     buffer->count);
out:
    mutex_unlock(&buffer->mutex);
    return retval;
}

Exemplo n.º 2

Arquivo: lineindex.c Projeto: compbio-UofT/shrimp

static inline void fill_fb(file_buffer * fb) {
	while (!fb->exhausted) {
		fill_read_buffer(&fb->frb);
		add_read_buffer_to_main(fb);
		if (!fb->exhausted && !fb->changed && fb->frb.eof==0) {
			fprintf(stderr,"too small buffer!\n");
			exit(1);
		}
	}
	//fprintf(stdout,"Filled %lu to %lu of %lu |%s|\n",fb->unseen_start, fb->unseen_end, fb->size,fb->base);
}

Exemplo n.º 3

Arquivo: file.c Projeto: xricson/knoppix

static ssize_t
sysfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
	struct sysfs_buffer * buffer = file->private_data;
	ssize_t retval = 0;

	if (!*ppos) {
		if ((retval = fill_read_buffer(file,buffer)))
			return retval;
	}
	pr_debug("%s: count = %d, ppos = %lld, buf = %s\n",
		 __FUNCTION__,count,*ppos,buffer->page);
	return flush_read_buffer(buffer,buf,count,ppos);
}

Exemplo n.º 4

static ssize_t
configfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
	struct configfs_buffer * buffer = file->private_data;
	ssize_t retval = 0;

	down(&buffer->sem);
	if (buffer->needs_read_fill) {
		if ((retval = fill_read_buffer(file->f_dentry,buffer)))
			goto out;
	}
	pr_debug("%s: count = %zd, ppos = %lld, buf = %s\n",
		 __FUNCTION__, count, *ppos, buffer->page);
	retval = flush_read_buffer(buffer,buf,count,ppos);
out:
	up(&buffer->sem);
	return retval;
}

Exemplo n.º 5

Arquivo: file.c Projeto: 383530895/linux

static ssize_t
configfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
	struct configfs_buffer * buffer = file->private_data;
	ssize_t retval = 0;

	mutex_lock(&buffer->mutex);
	if (buffer->needs_read_fill) {
		if ((retval = fill_read_buffer(file->f_path.dentry,buffer)))
			goto out;
	}
	pr_debug("%s: count = %zd, ppos = %lld, buf = %s\n",
		 __func__, count, *ppos, buffer->page);
	retval = simple_read_from_buffer(buf, count, ppos, buffer->page,
					 buffer->count);
out:
	mutex_unlock(&buffer->mutex);
	return retval;
}

Exemplo n.º 6

Arquivo: file.c Projeto: cilynx/dd-wrt

static ssize_t
sysfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
	struct sysfs_buffer * buffer = file->private_data;
	ssize_t retval = 0;

	down(&buffer->sem);
	if (buffer->needs_read_fill) {
		retval = fill_read_buffer(file->f_path.dentry,buffer);
		if (retval)
			goto out;
	}
	pr_debug("%s: count = %zd, ppos = %lld, buf = %s\n",
		 __FUNCTION__, count, *ppos, buffer->page);
	retval = simple_read_from_buffer(buf, count, ppos, buffer->page,
					 buffer->count);
out:
	up(&buffer->sem);
	return retval;
}