Skip local shares in bkg scan and occ files:scan (#26590)

Local shares should only be scanned when doing it for the owner to
avoid repeatedly rescanning the same shared storage over and over again
for every recipient.

1 files changed, 15 insertions, 5 deletions

diff --git a/lib/private/Files/Utils/Scanner.php b/lib/private/Files/Utils/Scanner.php
index d26c601be1a..3794e316dfe 100644
--- a/lib/private/Files/Utils/Scanner.php
+++ b/lib/private/Files/Utils/Scanner.php
@@ -118,14 +118,19 @@ class Scanner extends PublicEmitter {
 	public function backgroundScan($dir) {
 		$mounts = $this->getMounts($dir);
 		foreach ($mounts as $mount) {
-			if (is_null($mount->getStorage())) {
+			$storage = $mount->getStorage();
+			if (is_null($storage)) {
 				continue;
 			}
 			// don't scan the root storage
-			if ($mount->getStorage()->instanceOfStorage('\OC\Files\Storage\Local') && $mount->getMountPoint() === '/') {
+			if ($storage->instanceOfStorage('\OC\Files\Storage\Local') && $mount->getMountPoint() === '/') {
+				continue;
+			}
+
+			// don't scan received local shares, these can be scanned when scanning the owner's storage
+			if ($storage->instanceOfStorage('OCA\Files_Sharing\ISharedStorage')) {
 				continue;
 			}
-			$storage = $mount->getStorage();
 			$scanner = $storage->getScanner();
 			$this->attachListener($mount);
 
@@ -156,10 +161,10 @@ class Scanner extends PublicEmitter {
 		}
 		$mounts = $this->getMounts($dir);
 		foreach ($mounts as $mount) {
-			if (is_null($mount->getStorage())) {
+			$storage = $mount->getStorage();
+			if (is_null($storage)) {
 				continue;
 			}
-			$storage = $mount->getStorage();
 			// if the home storage isn't writable then the scanner is run as the wrong user
 			if ($storage->instanceOfStorage('\OC\Files\Storage\Home') and
 				(!$storage->isCreatable('') or !$storage->isCreatable('files'))
@@ -171,6 +176,11 @@ class Scanner extends PublicEmitter {
 				}
 
 			}
+
+			// don't scan received local shares, these can be scanned when scanning the owner's storage
+			if ($storage->instanceOfStorage('OCA\Files_Sharing\ISharedStorage')) {
+				continue;
+			}
 			$relativePath = $mount->getInternalPath($dir);
 			$scanner = $storage->getScanner();
 			$scanner->setUseTransactions(false);