Correct a gh_csum calculation used in debug output.

Always calculate the GPT header checksum over gh_size bytes
(a.k.a. 92), not sizeof(struct gpt_header). Compilers in their
wisdom may pad the struct to a nice round size, e.g. 96 bytes.

No functional change.

diff --git a/sbin/fdisk/gpt.c b/sbin/fdisk/gpt.c
index 960b047..8e8d983 100644 (file)
--- a/sbin/fdisk/gpt.c
+++ b/sbin/fdisk/gpt.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: gpt.c,v 1.62 2022/04/13 15:07:25 krw Exp $    */
+/*     $OpenBSD: gpt.c,v 1.63 2022/04/13 15:32:33 krw Exp $    */
 /*
  * Copyright (c) 2015 Markus Muller <mmu@grummel.net>
  * Copyright (c) 2015 Kenneth R Westerback <krw@openbsd.org>
@@ -479,7 +479,7 @@ add_partition(const uint8_t *beuuid, const char *name, uint64_t sectors)
        uuid_enc_le(&gp[pn].gp_guid, &uuid);
        gh.gh_part_csum = htole32(crc32((unsigned char *)&gp, sizeof(gp)));
        gh.gh_csum = 0;
-       gh.gh_csum = htole32(crc32((unsigned char *)&gh, sizeof(gh)));
+       gh.gh_csum = htole32(crc32((unsigned char *)&gh, letoh32(gh.gh_size)));
 
        return 0;