ref: dfa90ed5c09a923e19d6d1f1e2ccb4f61fca5d43
parent: 1dfa2d264d2e316475f370032c5b0bb239ddd621
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Tue Nov 12 15:00:15 EST 2013
devsd: fix scsi emulation for disks bigger than 4 billion sectors (from erik quanstros 9atom) for read capacity (10 (0x25) if we have more than 4 billion sectors, we must not return nsectors % (1<<32), we must return 0xffffffff.
--- a/sys/src/9/port/devsd.c
+++ b/sys/src/9/port/devsd.c
@@ -1072,7 +1072,9 @@
* Read capacity returns the LBA of the last sector.
*/
len = unit->sectors;
- if(len > 0)
+ if(len >= 0xffffffff)
+ len = 0xffffffff;
+ else if(len > 0)
len--;
p = r->data;
*p++ = len>>24;
--
⑨