net: Print output of "-net nic, model=help" to stdout instead of stderr

We are printing all other help output to stdout already (e.g. "-help",
"-cpu help" and "-machine help" output). So the "-net nic,model=help"
output should go to stdout instead of stderr, too. And while we're at
it, also print the NICs line by line, like we do it e.g. with the
"-cpu help" or "-M help" output, too.

Buglink: https://bugs.launchpad.net/qemu/+bug/1574327
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 net/net.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

[adding Markus, as he send a recent batch of similar patches]

On 4/23/19 11:06 AM, Thomas Huth wrote:
> We are printing all other help output to stdout already (e.g. "-help",
> "-cpu help" and "-machine help" output). So the "-net nic,model=help"
> output should go to stdout instead of stderr, too. And while we're at
> it, also print the NICs line by line, like we do it e.g. with the
> "-cpu help" or "-M help" output, too.
> 
> Buglink: https://bugs.launchpad.net/qemu/+bug/1574327
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  net/net.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

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

> 
> diff --git a/net/net.c b/net/net.c
> index f3a3c5444c..2cf5e76469 100644
> --- a/net/net.c
> +++ b/net/net.c
> @@ -837,9 +837,10 @@ int qemu_show_nic_models(const char *arg, const char *const *models)
>          return 0;
>      }
>  
> -    fprintf(stderr, "qemu: Supported NIC models: ");
> -    for (i = 0 ; models[i]; i++)
> -        fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
> +    printf("Supported NIC models:\n");
> +    for (i = 0 ; models[i]; i++) {
> +        printf("%s\n", models[i]);
> +    }
>      return 1;
>  }
>  
>

On 4/23/19 6:06 PM, Thomas Huth wrote:
> We are printing all other help output to stdout already (e.g. "-help",
> "-cpu help" and "-machine help" output). So the "-net nic,model=help"
> output should go to stdout instead of stderr, too. And while we're at
> it, also print the NICs line by line, like we do it e.g. with the
> "-cpu help" or "-M help" output, too.
> 
> Buglink: https://bugs.launchpad.net/qemu/+bug/1574327
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  net/net.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/net/net.c b/net/net.c
> index f3a3c5444c..2cf5e76469 100644
> --- a/net/net.c
> +++ b/net/net.c
> @@ -837,9 +837,10 @@ int qemu_show_nic_models(const char *arg, const char *const *models)
>          return 0;
>      }
>  
> -    fprintf(stderr, "qemu: Supported NIC models: ");
> -    for (i = 0 ; models[i]; i++)
> -        fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
> +    printf("Supported NIC models:\n");
> +    for (i = 0 ; models[i]; i++) {
> +        printf("%s\n", models[i]);
> +    }
>      return 1;
>  }
>  
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

On 23/04/2019 18:06, Thomas Huth wrote:
> We are printing all other help output to stdout already (e.g. "-help",
> "-cpu help" and "-machine help" output). So the "-net nic,model=help"
> output should go to stdout instead of stderr, too. And while we're at
> it, also print the NICs line by line, like we do it e.g. with the
> "-cpu help" or "-M help" output, too.
> 
> Buglink: https://bugs.launchpad.net/qemu/+bug/1574327
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  net/net.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/net/net.c b/net/net.c
> index f3a3c5444c..2cf5e76469 100644
> --- a/net/net.c
> +++ b/net/net.c
> @@ -837,9 +837,10 @@ int qemu_show_nic_models(const char *arg, const char *const *models)
>          return 0;
>      }
>  
> -    fprintf(stderr, "qemu: Supported NIC models: ");
> -    for (i = 0 ; models[i]; i++)
> -        fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
> +    printf("Supported NIC models:\n");
> +    for (i = 0 ; models[i]; i++) {
> +        printf("%s\n", models[i]);
> +    }
>      return 1;
>  }
>  
> 

Applied to my trivial-patches branch.

Thanks,
Laurent