From 0c6c1e5b1933d374c3a92949de169d72ed0e8e92 Mon Sep 17 00:00:00 2001
From: Jordan Bancino <jordan@bancino.net>
Date: Mon, 21 Nov 2022 16:22:50 +0000
Subject: [PATCH] Notify the user about the minimum max-cache instead of
 silently setting it.

---
 src/Db.c          |  2 +-
 src/Telodendria.c | 15 ++++++++++++++-
 src/include/Db.h  |  4 ++++
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/src/Db.c b/src/Db.c
index ab3c8cd..3e80ea7 100644
--- a/src/Db.c
+++ b/src/Db.c
@@ -236,7 +236,7 @@ DbOpen(char *dir, size_t cache)
 {
     Db *db;
 
-    if (!dir || cache < 1024)
+    if (!dir || cache < DB_MIN_CACHE)
     {
         return NULL;
     }
diff --git a/src/Telodendria.c b/src/Telodendria.c
index f863836..18b08b9 100644
--- a/src/Telodendria.c
+++ b/src/Telodendria.c
@@ -449,7 +449,20 @@ main(int argc, char **argv)
 
     if (!tConfig->maxCache)
     {
-        Log(lc, LOG_WARNING, "Max-cache is set to zero; caching is disabled.");
+        Log(lc, LOG_WARNING, "Max-cache is set to zero.");
+        Log(lc, LOG_WARNING,
+            "If this is not what you intended, check the config file");
+        Log(lc, LOG_WARNING,
+            "and ensure that max-cache is a valid number of bytes.");
+    }
+
+    if (tConfig->maxCache < DB_MIN_CACHE)
+    {
+        Log(lc, LOG_WARNING,
+            "Specified max cache size is less than the minimum of %d bytes.",
+            DB_MIN_CACHE);
+        Log(lc, LOG_WARNING, "Using a max-cache of %d bytes.", DB_MIN_CACHE);
+        tConfig->maxCache = DB_MIN_CACHE;
     }
 
     if (!matrixArgs.db)
diff --git a/src/include/Db.h b/src/include/Db.h
index 9d43813..97a928c 100644
--- a/src/include/Db.h
+++ b/src/include/Db.h
@@ -24,6 +24,10 @@
 #ifndef TELODENDRIA_DB_H
 #define TELODENDRIA_DB_H
 
+#ifndef DB_MIN_CACHE
+#define DB_MIN_CACHE 1024
+#endif
+
 #include <stddef.h>
 
 #include <HashMap.h>