From 701e5a967fd6bc97644f39e6fea3714f49a90291 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Fri, 6 Sep 2019 17:32:58 +0200
Subject: [SERVER] rpc: Add cachemap feature

---
 src/server/image.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'src/server/image.c')

diff --git a/src/server/image.c b/src/server/image.c
index 9fcb866..5fa06d8 100644
--- a/src/server/image.c
+++ b/src/server/image.c
@@ -274,6 +274,22 @@ bool image_ensureOpen(dnbd3_image_t *image)
 	return image->readFd != -1;
 }
 
+dnbd3_image_t* image_byId(int imgId)
+{
+	int i;
+	mutex_lock( &imageListLock );
+	for (i = 0; i < _num_images; ++i) {
+		dnbd3_image_t * const image = _images[i];
+		if ( image != NULL && image->id == imgId ) {
+			image->users++;
+			mutex_unlock( &imageListLock );
+			return image;
+		}
+	}
+	mutex_unlock( &imageListLock );
+	return NULL;
+}
+
 /**
  * Get an image by name+rid. This function increases a reference counter,
  * so you HAVE TO CALL image_release for every image_get() call at some
-- 
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