[Qemu-devel] Re: [PATCH v4] virtio-9p: fix build on !CONFIG_UTIMENSAT

[Jes Sorensen]

On 11/18/10 01:41, Hidetoshi Seto wrote:
> This patch introduce a fallback mechanism for old systems that do not
> support utimensat().  This fix build failure with following warnings:
> 
> hw/virtio-9p-local.c: In function 'local_utimensat':
> hw/virtio-9p-local.c:479: warning: implicit declaration of function 
> 'utimensat'
> hw/virtio-9p-local.c:479: warning: nested extern declaration of 'utimensat'
> 
> and:
> 
> hw/virtio-9p.c: In function 'v9fs_setattr_post_chmod':
> hw/virtio-9p.c:1410: error: 'UTIME_NOW' undeclared (first use in this 
> function)
> hw/virtio-9p.c:1410: error: (Each undeclared identifier is reported only once
> hw/virtio-9p.c:1410: error: for each function it appears in.)
> hw/virtio-9p.c:1413: error: 'UTIME_OMIT' undeclared (first use in this 
> function)
> hw/virtio-9p.c: In function 'v9fs_wstat_post_chmod':
> hw/virtio-9p.c:2905: error: 'UTIME_OMIT' undeclared (first use in this 
> function)
> 
> v4:
>   - Use tv_now.tv_usec
>   - Rebased on latest qemu.git
> v3:
>   - Use better alternative handling for UTIME_NOW/OMIT
>   - Move qemu_utimensat() to cutils.c
> V2:
>   - Introduce qemu_utimensat()
> 
> Acked-by: Chris Wright <address@hidden>
> Acked-by: M. Mohan Kumar <address@hidden>
> Signed-off-by: Hidetoshi Seto <address@hidden>

Hi Hidetoshi,

I think the idea of the patch is good, but please move qemu_utimensat()
to oslib-posix.c and provide a wrapper for oslib-win32.c. It is
emulation for a system library function, so it doesn't belong in
cutils.c, but rather in the oslib group.

Thanks,
Jes