Re: [Qemu-trivial] [Qemu-devel] [PATCH 5/5] linux-user/syscall: Replace g_malloc0 + memcpy with g_memdup

[Eric Blake <eblake@redhat.com>]

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On 10/08/2015 01:35 PM, Thomas Huth wrote:
> No need to use g_malloc0 to zero the memory if we memcpy to
> the whole buffer afterwards anyway. Actually, there is even
> a function which combines both steps, g_memdup, so let's use
> this function here instead.
> 
> Cc: Riku Voipio <riku.voipio@iki.fi>
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  linux-user/syscall.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

Reviewed-by: Eric Blake <eblake@redhat.com>

> 
> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> index 98b5766..f2ada0a 100644
> --- a/linux-user/syscall.c
> +++ b/linux-user/syscall.c
> @@ -5325,8 +5325,7 @@ static abi_long do_open_by_handle_at(abi_long mount_fd, abi_long handle,
>          return -TARGET_EFAULT;
>      }
>  
> -    fh = g_malloc0(total_size);
> -    memcpy(fh, target_fh, total_size);
> +    fh = g_memdup(target_fh, total_size);
>      fh->handle_bytes = size;
>      fh->handle_type = tswap32(target_fh->handle_type);
>  
> 

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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