static status_t
iterative_io_get_vecs_hook(void *cookie, io_request *request, off_t offset,
	size_t size, struct file_io_vec *vecs, size_t *count)
{
	Icb *icb = (Icb *)cookie;
	return file_map_translate(icb->FileMap(), offset, size, vecs, count,
		icb->GetVolume()->BlockSize());
}
예제 #2
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//!	btrfs_io() callback hook
static status_t
iterative_io_get_vecs_hook(void* cookie, io_request* request, off_t offset,
	size_t size, struct file_io_vec* vecs, size_t* _count)
{
	Inode* inode = (Inode*)cookie;

	return file_map_translate(inode->Map(), offset, size, vecs, _count,
		inode->GetVolume()->BlockSize());
}
예제 #3
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static status_t
ext2_write_pages(fs_volume* _volume, fs_vnode* _node, void* _cookie,
	off_t pos, const iovec* vecs, size_t count, size_t* _numBytes)
{
	Volume* volume = (Volume*)_volume->private_volume;
	Inode* inode = (Inode*)_node->private_node;

	if (volume->IsReadOnly())
		return B_READ_ONLY_DEVICE;

	if (inode->FileCache() == NULL)
		return B_BAD_VALUE;

	rw_lock_read_lock(inode->Lock());

	uint32 vecIndex = 0;
	size_t vecOffset = 0;
	size_t bytesLeft = *_numBytes;
	status_t status;

	while (true) {
		file_io_vec fileVecs[8];
		size_t fileVecCount = 8;

		status = file_map_translate(inode->Map(), pos, bytesLeft, fileVecs,
			&fileVecCount, 0);
		if (status != B_OK && status != B_BUFFER_OVERFLOW)
			break;

		bool bufferOverflow = status == B_BUFFER_OVERFLOW;

		size_t bytes = bytesLeft;
		status = write_file_io_vec_pages(volume->Device(), fileVecs,
			fileVecCount, vecs, count, &vecIndex, &vecOffset, &bytes);
		if (status != B_OK || !bufferOverflow)
			break;

		pos += bytes;
		bytesLeft -= bytes;
	}

	rw_lock_read_unlock(inode->Lock());

	return status;
}