From: Jens Axboe <axboe@kernel.dk>
Date: Fri, 24 Feb 2012 07:26:57 +0000 (+0100)
Subject: Fix verify
X-Git-Tag: fio-2.0.4~1
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=096151143a9bac51ebf6f266dcc3a70c19b1deb6

Fix verify

The hole commit from yesterday (d3a173a9) had a bug, where
we would checksum too much.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/verify.c b/verify.c
index 66219667..0a504deb 100644
--- a/verify.c
+++ b/verify.c
@@ -654,7 +654,7 @@ static int verify_header(struct verify_header *hdr)
 	if (hdr->magic != FIO_HDR_MAGIC)
 		return 0;
 
-	crc = crc32c(p, sizeof(*hdr) - sizeof(hdr->crc32));
+	crc = crc32c(p, offsetof(struct verify_header, crc32));
 	if (crc == hdr->crc32)
 		return 1;
 
@@ -859,7 +859,7 @@ static void populate_hdr(struct thread_data *td, struct io_u *io_u,
 	hdr->verify_type = td->o.verify;
 	hdr->len = header_len;
 	hdr->rand_seed = io_u->rand_seed;
-	hdr->crc32 = crc32c(p, sizeof(*hdr) - sizeof(hdr->crc32));
+	hdr->crc32 = crc32c(p, offsetof(struct verify_header, crc32));
 
 	data_len = header_len - hdr_size(hdr);