diff options
Diffstat (limited to 'util/block-helpers.h')
| -rw-r--r-- | util/block-helpers.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/util/block-helpers.h b/util/block-helpers.h new file mode 100644 index 0000000000..b53295a529 --- /dev/null +++ b/util/block-helpers.h @@ -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 */ |