diff mbox

[07/27] block/parallels: replace magic constants 4, 64 with proper sizeofs

Message ID 1426069701-1405-8-git-send-email-den@openvz.org
State New
Headers show

Commit Message

Denis V. Lunev March 11, 2015, 10:28 a.m. UTC 
simple purification..

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Roman Kagan <rkagan@parallels.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
---
 block/parallels.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Comments

Stefan Hajnoczi April 22, 2015, 12:42 p.m. UTC | #1 
On Wed, Mar 11, 2015 at 01:28:01PM +0300, Denis V. Lunev wrote:
> simple purification..
> 
> Signed-off-by: Denis V. Lunev <den@openvz.org>
> Reviewed-by: Roman Kagan <rkagan@parallels.com>
> CC: Kevin Wolf <kwolf@redhat.com>
> CC: Stefan Hajnoczi <stefanha@redhat.com>
> ---
>  block/parallels.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
diff mbox

Patch

diff --git a/block/parallels.c b/block/parallels.c
index 64b169b..306f2e3 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 {
@@ -63,7 +62,7 @@  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) ||
@@ -116,7 +115,7 @@  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;
@@ -127,7 +126,8 @@  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;
     }