Re: [Qemu-devel] [PATCH 08/11] chardev: add serial chardev support to chardev-add (qmp)

[Paolo Bonzini <pbonzini@redhat.com>]

Il 07/01/2013 14:55, Gerd Hoffmann ha scritto:
> Add support for serial chardevs.  Windup qemu_chr_open_win() on
> Windows, alias to 'tty' on Linux.
> 
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
>  qapi-schema.json |    3 ++-
>  qemu-char.c      |   17 +++++++++++++++--
>  2 files changed, 17 insertions(+), 3 deletions(-)
> 
> diff --git a/qapi-schema.json b/qapi-schema.json
> index 7e5c8c2..d833385 100644
> --- a/qapi-schema.json
> +++ b/qapi-schema.json
> @@ -3036,7 +3036,8 @@
>  { 'type': 'ChardevFile', 'data': { '*in' : 'ChardevFileSource',
>                                     'out' : 'ChardevFileSource' } }
>  
> -{ 'enum': 'ChardevPortKind', 'data': [ 'tty' ] }
> +{ 'enum': 'ChardevPortKind', 'data': [ 'tty',
> +                                       'serial' ] }

Can we just use one name, either tty or serial?  And for the QemuOpts
version, alias them too.

Paolo

>  
>  { 'type': 'ChardevPort', 'data': { 'device' : 'ChardevFileSource',
>                                     'type'   : 'ChardevPortKind'} }
> diff --git a/qemu-char.c b/qemu-char.c
> index 764321b..4232fea 100644
> --- a/qemu-char.c
> +++ b/qemu-char.c
> @@ -1672,9 +1672,8 @@ static int win_chr_poll(void *opaque)
>      return 0;
>  }
>  
> -static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
> +static CharDriverState *qemu_chr_open_win_path(const char *filename)
>  {
> -    const char *filename = qemu_opt_get(opts, "path");
>      CharDriverState *chr;
>      WinCharState *s;
>  
> @@ -1693,6 +1692,11 @@ static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
>      return chr;
>  }
>  
> +static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
> +{
> +    return qemu_chr_open_win_path(qemu_opt_get(opts, "path"));
> +}
> +
>  static int win_chr_pipe_poll(void *opaque)
>  {
>      CharDriverState *chr = opaque;
> @@ -2771,6 +2775,7 @@ static const struct {
>  #endif
>  #ifdef HAVE_CHARDEV_TTY
>      { .name = "tty",       .open = qemu_chr_open_tty },
> +    { .name = "serial",    .open = qemu_chr_open_tty },
>      { .name = "pty",       .open = qemu_chr_open_pty },
>  #endif
>  #ifdef HAVE_CHARDEV_PARPORT
> @@ -2970,7 +2975,14 @@ static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
>  
>  static CharDriverState *qmp_chardev_open_port(ChardevPort *port, Error **errp)
>  {
> +    if (port->device->kind != CHARDEV_FILE_SOURCE_KIND_PATH) {
> +        error_setg(errp, "only file paths supported");
> +        return NULL;
> +    }
> +
>      switch (port->type) {
> +    case CHARDEV_PORT_KIND_SERIAL:
> +        return qemu_chr_open_win_path(port->device->path);
>      default:
>          error_setg(errp, "unknown chardev port (%d)", port->type);
>          return NULL;
> @@ -3033,6 +3045,7 @@ static CharDriverState *qmp_chardev_open_port(ChardevPort *port, Error **errp)
>      switch (port->type) {
>  #ifdef HAVE_CHARDEV_TTY
>      case CHARDEV_PORT_KIND_TTY:
> +    case CHARDEV_PORT_KIND_SERIAL:
>          flags = O_RDWR | O_NONBLOCK;
>          fd = qmp_chardev_open_file_source(port->device, flags, errp);
>          if (error_is_set(errp)) {
>