Re: [PATCH v4 2/3] qga/commands-win32: Do not set matrix_lookup_t/win_10_0_t arrays size

[Yan Vugenfirer]

On Mon, Mar 4, 2024 at 3:45 PM Konstantin Kostiuk <kkostiuk@redhat.com> wrote:
>
> From: Philippe Mathieu-Daudé <philmd@linaro.org>
>
> ga_get_win_name() iterates over all elements in the arrays by
> checking the 'version' field is non-NULL. Since the arrays are
> guarded by a NULL terminating element, we don't need to specify
> their size:
>
>   static char *ga_get_win_name(...)
>   {
>       ...
>       const ga_matrix_lookup_t *table = WIN_VERSION_MATRIX[tbl_idx];
>       const ga_win_10_0_t *win_10_0_table = ...
>       ...
>       while (table->version != NULL) {
>                     ^^^^^^^^^^^^^^^
>               while (win_10_0_table->version != NULL) {
>                                      ^^^^^^^^^^^^^^^
>
> This will simplify maintenance when adding new entries to these
> arrays.
>
> Split WIN_VERSION_MATRIX into WIN_CLIENT_VERSION_MATRIX and
> WIN_SERVER_VERSION_MATRIX because  multidimensional array must
> have bounds for all dimensions except the first.
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> Message-ID: <20240222152835.72095-3-philmd@linaro.org>
> Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
> Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
> ---
>  qga/commands-win32.c | 52 +++++++++++++++++++++-----------------------
>  1 file changed, 25 insertions(+), 27 deletions(-)
>
> diff --git a/qga/commands-win32.c b/qga/commands-win32.c
> index 79b5a580c9..a830f1494e 100644
> --- a/qga/commands-win32.c
> +++ b/qga/commands-win32.c
> @@ -2124,45 +2124,42 @@ typedef struct _ga_matrix_lookup_t {
>      const char *version_id;
>  } ga_matrix_lookup_t;
>
> -static const ga_matrix_lookup_t WIN_VERSION_MATRIX[2][7] = {
> -    {
> -        /* Desktop editions */
> -        { 5, 0, "Microsoft Windows 2000",   "2000"},
> -        { 5, 1, "Microsoft Windows XP",     "xp"},
> -        { 6, 0, "Microsoft Windows Vista",  "vista"},
> -        { 6, 1, "Microsoft Windows 7"       "7"},
> -        { 6, 2, "Microsoft Windows 8",      "8"},
> -        { 6, 3, "Microsoft Windows 8.1",    "8.1"},
> -        { 0, 0, 0}
> -    },{
> -        /* Server editions */
> -        { 5, 2, "Microsoft Windows Server 2003",        "2003"},
> -        { 6, 0, "Microsoft Windows Server 2008",        "2008"},
> -        { 6, 1, "Microsoft Windows Server 2008 R2",     "2008r2"},
> -        { 6, 2, "Microsoft Windows Server 2012",        "2012"},
> -        { 6, 3, "Microsoft Windows Server 2012 R2",     "2012r2"},
> -        { 0, 0, 0},
> -        { 0, 0, 0}
> -    }
> +static const ga_matrix_lookup_t WIN_CLIENT_VERSION_MATRIX[] = {
> +    { 5, 0, "Microsoft Windows 2000",   "2000"},
> +    { 5, 1, "Microsoft Windows XP",     "xp"},
> +    { 6, 0, "Microsoft Windows Vista",  "vista"},
> +    { 6, 1, "Microsoft Windows 7"       "7"},
> +    { 6, 2, "Microsoft Windows 8",      "8"},
> +    { 6, 3, "Microsoft Windows 8.1",    "8.1"},
> +    { }
> +};
> +
> +static const ga_matrix_lookup_t WIN_SERVER_VERSION_MATRIX[] = {
> +    { 5, 2, "Microsoft Windows Server 2003",        "2003"},
> +    { 6, 0, "Microsoft Windows Server 2008",        "2008"},
> +    { 6, 1, "Microsoft Windows Server 2008 R2",     "2008r2"},
> +    { 6, 2, "Microsoft Windows Server 2012",        "2012"},
> +    { 6, 3, "Microsoft Windows Server 2012 R2",     "2012r2"},
> +    { },
>  };
>
>  typedef struct _ga_win_10_0_t {
>      int first_build;
> -    const char *version;
> -    const char *version_id;
> +    char const *version;
> +    char const *version_id;
>  } ga_win_10_0_t;
>
> -static const ga_win_10_0_t WIN_10_0_SERVER_VERSION_MATRIX[4] = {
> +static const ga_win_10_0_t WIN_10_0_SERVER_VERSION_MATRIX[] = {
>      {14393, "Microsoft Windows Server 2016",    "2016"},
>      {17763, "Microsoft Windows Server 2019",    "2019"},
>      {20344, "Microsoft Windows Server 2022",    "2022"},
> -    {0, 0}
> +    { }
>  };
>
> -static const ga_win_10_0_t WIN_10_0_CLIENT_VERSION_MATRIX[3] = {
> +static const ga_win_10_0_t WIN_10_0_CLIENT_VERSION_MATRIX[] = {
>      {10240, "Microsoft Windows 10",    "10"},
>      {22000, "Microsoft Windows 11",    "11"},
> -    {0, 0}
> +    { }
>  };
>
>  static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp)
> @@ -2191,7 +2188,8 @@ static char *ga_get_win_name(const OSVERSIONINFOEXW 
> *os_version, bool id)
>      DWORD minor = os_version->dwMinorVersion;
>      DWORD build = os_version->dwBuildNumber;
>      int tbl_idx = (os_version->wProductType != VER_NT_WORKSTATION);
> -    const ga_matrix_lookup_t *table = WIN_VERSION_MATRIX[tbl_idx];
> +    const ga_matrix_lookup_t *table = tbl_idx ?
> +        WIN_SERVER_VERSION_MATRIX : WIN_CLIENT_VERSION_MATRIX;
>      const ga_win_10_0_t *win_10_0_table = tbl_idx ?
>          WIN_10_0_SERVER_VERSION_MATRIX : WIN_10_0_CLIENT_VERSION_MATRIX;
>      const ga_win_10_0_t *win_10_0_version = NULL;
> --
> 2.44.0
>

Reviewed-by: Yan Vugenfirer <yvugenfi@redhat.com>