block: move logical block size check function to a common utility function

Move the constants from hw/core/qdev-properties.c to util/block-helpers.h so that knowledge of the min/max values is Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Coiby Xu <coiby.xu@gmail.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Eduardo Habkost <ehabkost@redhat.com> Message-id: 20200918080912.321299-5-coiby.xu@gmail.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-09-18 16:09:09 +08:00
parent 70eb2c079c
commit 5937835ac4
4 changed files with 71 additions and 26 deletions
@@ -0,0 +1,19 @@
+#ifndef BLOCK_HELPERS_H
+#define BLOCK_HELPERS_H
+
+#include "qemu/units.h"
+
+/* lower limit is sector size */
+#define MIN_BLOCK_SIZE          INT64_C(512)
+#define MIN_BLOCK_SIZE_STR      "512 B"
+/*
+ * upper limit is arbitrary, 2 MiB looks sufficient for all sensible uses, and
+ * matches qcow2 cluster size limit
+ */
+#define MAX_BLOCK_SIZE          (2 * MiB)
+#define MAX_BLOCK_SIZE_STR      "2 MiB"
+
+void check_block_size(const char *id, const char *name, int64_t value,
+                      Error **errp);
+
+#endif /* BLOCK_HELPERS_H */