ChicleFileMapping: Limit size of files we try to map/read

Author: hpjansson

tools/chafa/chicle-file-mapping.c

@@ -65,6 +65,9 @@
 # endif
 #endif
 
+/* The absolute maximum size file we'll try to open */
+#define FILE_SIZE_MAX ((gint64) 2 * 1024 * 1024 * 1024)
+
 /* Streams bigger than this must be cached in a file */
 #define FILE_MEMORY_CACHE_MAX (4 * 1024 * 1024)
 
@@ -465,6 +468,8 @@ map_or_read_file (ChicleFileMapping *file_mapping)
             goto out;
 
         t = fstat (file_mapping->fd, &sbuf);
+        if (sbuf.st_size > FILE_SIZE_MAX)
+            goto out;
 
         if (!t)
         {