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[Qemu-devel] [PATCH 07/27] block/parallels: replace magic constants 4, 6
From: |
Denis V. Lunev |
Subject: |
[Qemu-devel] [PATCH 07/27] block/parallels: replace magic constants 4, 64 with proper sizeofs |
Date: |
Tue, 28 Apr 2015 10:46:40 +0300 |
simple purification..
Signed-off-by: Denis V. Lunev <address@hidden>
Reviewed-by: Roman Kagan <address@hidden>
Reviewed-by: Stefan Hajnoczi <address@hidden>
CC: Kevin Wolf <address@hidden>
---
block/parallels.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/block/parallels.c b/block/parallels.c
index f3ffece..138e618 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -32,7 +32,6 @@
#define HEADER_MAGIC "WithoutFreeSpace"
#define HEADER_MAGIC2 "WithouFreSpacExt"
#define HEADER_VERSION 2
-#define HEADER_SIZE 64
// always little-endian
typedef struct ParallelsHeader {
@@ -67,7 +66,7 @@ static int parallels_probe(const uint8_t *buf, int buf_size,
const char *filenam
{
const ParallelsHeader *ph = (const void *)buf;
- if (buf_size < HEADER_SIZE)
+ if (buf_size < sizeof(ParallelsHeader))
return 0;
if ((!memcmp(ph->magic, HEADER_MAGIC, 16) ||
@@ -120,7 +119,7 @@ static int parallels_open(BlockDriverState *bs, QDict
*options, int flags,
}
s->catalog_size = le32_to_cpu(ph.catalog_entries);
- if (s->catalog_size > INT_MAX / 4) {
+ if (s->catalog_size > INT_MAX / sizeof(uint32_t)) {
error_setg(errp, "Catalog too large");
ret = -EFBIG;
goto fail;
@@ -131,7 +130,8 @@ static int parallels_open(BlockDriverState *bs, QDict
*options, int flags,
goto fail;
}
- ret = bdrv_pread(bs->file, 64, s->catalog_bitmap, s->catalog_size * 4);
+ ret = bdrv_pread(bs->file, sizeof(ParallelsHeader),
+ s->catalog_bitmap, s->catalog_size * sizeof(uint32_t));
if (ret < 0) {
goto fail;
}
--
1.9.1
- [Qemu-devel] [PATCH v4 0/27] write/create for Parallels images with reasonable performance, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 05/27] block/parallels: add get_block_status, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 03/27] block/parallels: switch to bdrv_read, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 02/27] block/parallels: rename parallels_header to ParallelsHeader, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 06/27] block/parallels: provide _co_readv routine for parallels format driver, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 07/27] block/parallels: replace magic constants 4, 64 with proper sizeofs,
Denis V. Lunev <=
- [Qemu-devel] [PATCH 08/27] block/parallels: mark parallels format driver as zero inited, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 01/27] iotests, parallels: quote TEST_IMG in 076 test to be path-safe, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 09/27] block/parallels: _co_writev callback for Parallels format, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 04/27] block/parallels: read up to cluster end in one go, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 11/27] block/parallels: support parallels image creation, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 13/27] parallels: change copyright information in the image header, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 12/27] iotests, parallels: test for newly created parallels image via qemu-img, Denis V. Lunev, 2015/04/28
- [Qemu-devel] [PATCH 10/27] iotests, parallels: test for write into Parallels image, Denis V. Lunev, 2015/04/28