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Re: [Qemu-devel] [PATCH 4/5] vmdk: change magic number to macro
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH 4/5] vmdk: change magic number to macro |
Date: |
Fri, 19 Apr 2013 11:06:43 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Apr 19, 2013 at 11:48:44AM +0800, Fam Zheng wrote:
> From: Feiran Zheng <address@hidden>
>
> Two hard coded flag bits are changed to macros.
>
> Signed-off-by: Fam Zheng <address@hidden>
> ---
> block/vmdk.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/block/vmdk.c b/block/vmdk.c
> index 827b35b..5daa9f2 100644
> --- a/block/vmdk.c
> +++ b/block/vmdk.c
> @@ -32,6 +32,7 @@
> #define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D')
> #define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V')
> #define VMDK4_COMPRESSION_DEFLATE 1
> +#define VMDK4_FLAG_NL_DETECT (1 << 0)
> #define VMDK4_FLAG_RGD (1 << 1)
> /* Zeroed-grain enable bit */
> #define VMDK4_FLAG_ZG (1 << 2)
> @@ -1285,7 +1286,7 @@ static int vmdk_create_extent(const char *filename,
> int64_t filesize,
> magic = cpu_to_be32(VMDK4_MAGIC);
> memset(&header, 0, sizeof(header));
> header.version = zeroed_grain ? 2 : 1;
> - header.flags = 3
> + header.flags = VMDK4_FLAG_RGD | VMDK4_FLAG_NL_DETECT
Nice :)