Re: [Qemu-devel] [PATCH] arch_init: Remove unnecessary default_config_files table

[Paolo Bonzini <pbonzini@redhat.com>]

On 17/01/2017 19:00, Eduardo Habkost wrote:
> The existing default_config_files table in arch_init.c has a
> single entry, making it completely unnecessary. The whole code
> can be replaced by a single qemu_read_config_file() call in vl.c.
> 
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
>  include/qemu/config-file.h |  4 ----
>  arch_init.c                | 27 ---------------------------
>  vl.c                       | 18 ++++++++++++++----
>  3 files changed, 14 insertions(+), 35 deletions(-)
> 
> diff --git a/include/qemu/config-file.h b/include/qemu/config-file.h
> index 8d4b2b6d94..c80d5c8a33 100644
> --- a/include/qemu/config-file.h
> +++ b/include/qemu/config-file.h
> @@ -23,8 +23,4 @@ int qemu_read_config_file(const char *filename);
>  void qemu_config_parse_qdict(QDict *options, QemuOptsList **lists,
>                               Error **errp);
>  
> -/* Read default QEMU config files
> - */
> -int qemu_read_default_config_files(bool userconfig);
> -
>  #endif /* QEMU_CONFIG_FILE_H */
> diff --git a/arch_init.c b/arch_init.c
> index 5cc58b2c35..e9b6d62d18 100644
> --- a/arch_init.c
> +++ b/arch_init.c
> @@ -84,33 +84,6 @@ int graphic_depth = 32;
>  
>  const uint32_t arch_type = QEMU_ARCH;
>  
> -static struct defconfig_file {
> -    const char *filename;
> -    /* Indicates it is an user config file (disabled by -no-user-config) */
> -    bool userconfig;
> -} default_config_files[] = {
> -    { CONFIG_QEMU_CONFDIR "/qemu.conf",                   true },
> -    { NULL }, /* end of list */
> -};
> -
> -int qemu_read_default_config_files(bool userconfig)
> -{
> -    int ret;
> -    struct defconfig_file *f;
> -
> -    for (f = default_config_files; f->filename; f++) {
> -        if (!userconfig && f->userconfig) {
> -            continue;
> -        }
> -        ret = qemu_read_config_file(f->filename);
> -        if (ret < 0 && ret != -ENOENT) {
> -            return ret;
> -        }
> -    }
> -
> -    return 0;
> -}
> -
>  struct soundhw {
>      const char *name;
>      const char *descr;
> diff --git a/vl.c b/vl.c
> index c643d3ff3a..b563f9b924 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -2990,6 +2990,18 @@ static int global_init_func(void *opaque, QemuOpts *opts, Error **errp)
>      return 0;
>  }
>  
> +static int qemu_read_default_config_file(void)
> +{
> +    int ret;
> +
> +    ret = qemu_read_config_file(CONFIG_QEMU_CONFDIR "/qemu.conf");
> +    if (ret < 0 && ret != -ENOENT) {
> +        return ret;
> +    }
> +
> +    return 0;
> +}
> +
>  int main(int argc, char **argv, char **envp)
>  {
>      int i;
> @@ -3117,10 +3129,8 @@ int main(int argc, char **argv, char **envp)
>          }
>      }
>  
> -    if (defconfig) {
> -        int ret;
> -        ret = qemu_read_default_config_files(userconfig);
> -        if (ret < 0) {
> +    if (defconfig && userconfig) {
> +        if (qemu_read_default_config_file() < 0) {
>              exit(1);
>          }
>      }
> 

Looks good!  Please include it yourself in your next pull request.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

Though maybe we should just remove .conf file support completely...
who's using it?!?

Paolo