示例#1
0
static status_t
ext2_read_dir(fs_volume *_volume, fs_vnode *_node, void *_cookie,
	struct dirent *dirent, size_t bufferSize, uint32 *_num)
{
	DirectoryIterator *iterator = (DirectoryIterator *)_cookie;
	Volume* volume = (Volume*)_volume->private_volume;

	uint32 maxCount = *_num;
	uint32 count = 0;

	while (count < maxCount && bufferSize > sizeof(struct dirent)) {

		size_t length = bufferSize - sizeof(struct dirent) + 1;
		ino_t id;

		status_t status = iterator->GetNext(dirent->d_name, &length, &id);
		if (status == B_ENTRY_NOT_FOUND)
			break;

		if (status == B_BUFFER_OVERFLOW) {
			// the remaining name buffer length was too small
			if (count == 0)
				return B_BUFFER_OVERFLOW;
			break;
		}

		if (status != B_OK)
			return status;

		status = iterator->Next();
		if (status != B_OK && status != B_ENTRY_NOT_FOUND)
			return status;

		dirent->d_dev = volume->ID();
		dirent->d_ino = id;
		dirent->d_reclen = sizeof(struct dirent) + length;

		bufferSize -= dirent->d_reclen;
		dirent = (struct dirent*)((uint8*)dirent + dirent->d_reclen);
		count++;
	}

	*_num = count;
	return B_OK;
}
示例#2
0
static status_t
btrfs_read_dir(fs_volume *_volume, fs_vnode *_node, void *_cookie,
	struct dirent *dirent, size_t bufferSize, uint32 *_num)
{
	DirectoryIterator* iterator = (DirectoryIterator*)_cookie;

	size_t length = bufferSize;
	ino_t id;
	status_t status = iterator->GetNext(dirent->d_name, &length, &id);
	if (status == B_ENTRY_NOT_FOUND) {
		*_num = 0;
		return B_OK;
	} else if (status != B_OK)
		return status;

	Volume* volume = (Volume*)_volume->private_volume;
	dirent->d_dev = volume->ID();
	dirent->d_ino = id;
	dirent->d_reclen = sizeof(struct dirent) + length;
	*_num = 1;

	return B_OK;
}