From 6bd2f486efcae7f9d21173569d467d0b4caf66cc Mon Sep 17 00:00:00 2001
From: Max Wash <mbswash@gmail.com>
Date: Thu, 27 Feb 2025 15:53:07 +0000
Subject: [PATCH] cluster-cache: fix put() not allocating space for a cluster
 in on-disk storage

---
 src/cluster-cache.c | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/src/cluster-cache.c b/src/cluster-cache.c
index 97332c5..300c6b7 100644
--- a/src/cluster-cache.c
+++ b/src/cluster-cache.c
@@ -185,6 +185,30 @@ enum ec3_status cluster_cache_get(
 	return EC3_SUCCESS;
 }
 
+static enum ec3_status alloc_ondisk_cluster(
+	struct cluster_cache *cache,
+	size_t *offset)
+{
+	char buf[1024] = {0};
+
+	size_t pos;
+	b_file_size(cache->c_storage, &pos);
+	b_file_seek(cache->c_storage, 0, B_SEEK_END);
+
+	for (size_t i = 0; i < cache->c_cluster_size; i += sizeof buf) {
+		size_t nr_written = 0;
+		b_file_write(
+			cache->c_storage,
+			B_OFFSET_CURRENT,
+			sizeof buf,
+			buf,
+			&nr_written);
+	}
+
+	*offset = pos;
+	return EC3_SUCCESS;
+}
+
 enum ec3_status cluster_cache_put(
 	struct cluster_cache *cache,
 	size_t cluster_id,
@@ -210,7 +234,7 @@ enum ec3_status cluster_cache_put(
 		entry->e_length = len;
 
 		if (cache->c_storage) {
-			b_file_size(cache->c_storage, &entry->e_storage_offset);
+			alloc_ondisk_cluster(cache, &entry->e_storage_offset);
 		}
 
 		put_cluster(&cache->c_entries, entry);