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only allow a single concurrent dav write to a file 

Signed-off-by: Robin Appelman <robin@icewind.nl>
This commit is contained in:
Robin Appelman 2018-04-26 11:16:51 +02:00
parent 642ebea490
commit 187acecff7
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1 changed files with 10 additions and 1 deletions
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11
apps/dav/lib/Connector/Sabre/Directory.php
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@ -28,6 +28,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\DAV\Connector\Sabre;
use OC\Files\View;
@ -147,8 +148,16 @@ class Directory extends \OCA\DAV\Connector\Sabre\Node
$info = new \OC\Files\FileInfo($path, null, null, [], null);
}
$node = new \OCA\DAV\Connector\Sabre\File($this->fileView, $info);
// only allow 1 process to upload a file at once but still allow reading the file while writing the part file
$node->acquireLock(ILockingProvider::LOCK_SHARED);
return $node->put($data);
$this->fileView->lockFile($path . '.upload.part', ILockingProvider::LOCK_EXCLUSIVE);
$result = $node->put($data);
$this->fileView->unlockFile($path . '.upload.part', ILockingProvider::LOCK_EXCLUSIVE);
$node->releaseLock(ILockingProvider::LOCK_SHARED);
return $result;
} catch (\OCP\Files\StorageNotAvailableException $e) {
throw new \Sabre\DAV\Exception\ServiceUnavailable($e->getMessage(), $e->getCode(), $e);
} catch (InvalidPathException $ex) {