Correct a gh_part_csum calculation used in debug output.

Always calculate the GPT partition entries checksum over
gh_part_num * gh_part_size bytes, not the maximal size of the
internal partition entries array.

No functional change.

diff --git a/sbin/fdisk/gpt.c b/sbin/fdisk/gpt.c
index 8e8d983..9d06444 100644 (file)
--- a/sbin/fdisk/gpt.c
+++ b/sbin/fdisk/gpt.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: gpt.c,v 1.63 2022/04/13 15:32:33 krw Exp $    */
+/*     $OpenBSD: gpt.c,v 1.64 2022/04/13 22:29:30 krw Exp $    */
 /*
  * Copyright (c) 2015 Markus Muller <mmu@grummel.net>
  * Copyright (c) 2015 Kenneth R Westerback <krw@openbsd.org>
@@ -433,7 +433,7 @@ add_partition(const uint8_t *beuuid, const char *name, uint64_t sectors)
 {
        struct uuid             uuid, gp_type;
        int                     rslt;
-       uint64_t                end, freesectors, start;
+       uint64_t                end, freesectors, gpbytes, start;
        uint32_t                status, pn, pncnt;
 
        uuid_dec_be(beuuid, &uuid);
@@ -477,7 +477,8 @@ add_partition(const uint8_t *beuuid, const char *name, uint64_t sectors)
                goto done;
 
        uuid_enc_le(&gp[pn].gp_guid, &uuid);
-       gh.gh_part_csum = htole32(crc32((unsigned char *)&gp, sizeof(gp)));
+       gpbytes = letoh32(gh.gh_part_num) * letoh32(gh.gh_part_size);
+       gh.gh_part_csum = htole32(crc32((unsigned char *)&gp, gpbytes));
        gh.gh_csum = 0;
        gh.gh_csum = htole32(crc32((unsigned char *)&gh, letoh32(gh.gh_size)));