Re: [Virtio-fs] [PATCH] virtiofsd: Add qemu version and copyright info

[Stefan Hajnoczi]

On Wed, Mar 03, 2021 at 02:53:39PM -0500, Vivek Goyal wrote:
> Option "-V" currently displays the fuse protocol version virtiofsd is
> using. For example, I see this.
> 
> $ ./virtiofsd -V
> "using FUSE kernel interface version 7.33"
> 
> People also want to know software version of virtiofsd so that they can
> figure out if a certain fix is part of currently running virtiofsd or
> not. Eric Ernst ran into this issue.
> 
> David Gilbert thinks that it probably is best that we simply carry the
> qemu version and display that information given we are part of qemu
> tree. 
> 
> So this patch enhances version information and also adds qemu version
> and copyright info. Not sure if copyright information is supposed
> to be displayed along with version info. Given qemu-storage-daemon
> and other utilities are doing it, so I continued with same pattern.
> This is how now output looks like.
> 
> $ ./virtiofsd -V
> virtiofsd version 5.2.50 (v5.2.0-2357-gcbcf09872a-dirty)
> Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
> using FUSE kernel interface version 7.33
> 
> Reported-by: Eric Ernst <eric.g.ernst@gmail.com>
> Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
> ---
>  tools/virtiofsd/passthrough_ll.c |    8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> Index: rhvgoyal-qemu/tools/virtiofsd/passthrough_ll.c
> ===================================================================
> --- rhvgoyal-qemu.orig/tools/virtiofsd/passthrough_ll.c       2021-03-03 
> 14:28:04.893672524 -0500
> +++ rhvgoyal-qemu/tools/virtiofsd/passthrough_ll.c    2021-03-03 
> 14:37:29.381712706 -0500
> @@ -37,6 +37,8 @@
>  
>  #include "qemu/osdep.h"
>  #include "qemu/timer.h"
> +#include "qemu-version.h"
> +#include "qemu-common.h"
>  #include "fuse_virtio.h"
>  #include "fuse_log.h"
>  #include "fuse_lowlevel.h"
> @@ -3591,6 +3593,11 @@ static void fuse_lo_data_cleanup(struct
>      free(lo->source);
>  }
>  
> +static void qemu_version(void)
> +{
> +    printf("virtiofsd version " QEMU_FULL_VERSION "\n" QEMU_COPYRIGHT "\n");
> +}
> +
>  int main(int argc, char *argv[])
>  {
>      struct fuse_args args = FUSE_ARGS_INIT(argc, argv);
> @@ -3662,6 +3669,7 @@ int main(int argc, char *argv[])
>          ret = 0;
>          goto err_out1;
>      } else if (opts.show_version) {
> +        qemu_version();
>          fuse_lowlevel_version();
>          ret = 0;
>          goto err_out1;
> 
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Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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