Re: [Qemu-devel] [PATCH] qga: fsfreeze is only supported on Linux

[Anthony Liguori <anthony@codemonkey.ws>]

On 07/22/2011 01:56 PM, Blue Swirl wrote:
> Fix build breakage on non-Linux hosts.
>
> Signed-off-by: Blue Swirl<blauwirbel@gmail.com>

The patch I sent was similar but QAPI commands don't use in-band error 
reporting so it set the out-of-band error.

I'll push my version if you can confirm it addresses the build issue.

Regards,

Anthony Liguori

> ---
>   qga/guest-agent-commands.c |   25 ++++++++++++++++++++++++-
>   1 files changed, 24 insertions(+), 1 deletions(-)
>
> diff --git a/qga/guest-agent-commands.c b/qga/guest-agent-commands.c
> index 8c0d67e..918aaa2 100644
> --- a/qga/guest-agent-commands.c
> +++ b/qga/guest-agent-commands.c
> @@ -11,10 +11,12 @@
>    */
>
>   #include<glib.h>
> -#include<mntent.h>
>   #include<sys/types.h>
>   #include<sys/ioctl.h>
> +#ifdef __linux__
> +#include<mntent.h>
>   #include<linux/fs.h>
> +#endif
>   #include "qga/guest-agent-core.h"
>   #include "qga-qmp-commands.h"
>   #include "qerror.h"
> @@ -22,6 +24,7 @@
>
>   static GAState *ga_state;
>
> +#ifdef __linux__
>   static void disable_logging(void)
>   {
>       ga_disable_logging(ga_state);
> @@ -31,6 +34,7 @@ static void enable_logging(void)
>   {
>       ga_enable_logging(ga_state);
>   }
> +#endif
>
>   /* Note: in some situations, like with the fsfreeze, logging may be
>    * temporarilly disabled. if it is necessary that a command be able
> @@ -323,6 +327,7 @@ static void guest_file_init(void)
>       QTAILQ_INIT(&guest_file_state.filehandles);
>   }
>
> +#ifdef __linux__
>   typedef struct GuestFsfreezeMount {
>       char *dirname;
>       char *devtype;
> @@ -508,11 +513,29 @@ static void guest_fsfreeze_cleanup(void)
>           }
>       }
>   }
> +#else
> +GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **err)
> +{
> +    return GUEST_FSFREEZE_STATUS_ERROR;
> +}
> +
> +int64_t qmp_guest_fsfreeze_freeze(Error **err)
> +{
> +    return -1;
> +}
> +
> +int64_t qmp_guest_fsfreeze_thaw(Error **err)
> +{
> +    return 0;
> +}
> +#endif
>
>   /* register init/cleanup routines for stateful command groups */
>   void ga_command_state_init(GAState *s, GACommandState *cs)
>   {
>       ga_state = s;
> +#ifdef __linux__
>       ga_command_state_add(cs, guest_fsfreeze_init, guest_fsfreeze_cleanup);
> +#endif
>       ga_command_state_add(cs, guest_file_init, NULL);
>   }