Re: [PATCH 01/12] libxl: Move detection of autoballoon to libxl_conf

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On 30.08.2013 23:46, Jim Fehlig wrote:
> Detecting whether or not to autoballoon is configuration related,
> so move the code to libxl_conf.
> 
> Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx>
> ---
>  src/libxl/libxl_conf.c   | 22 ++++++++++++++++++++++
>  src/libxl/libxl_conf.h   |  3 +++
>  src/libxl/libxl_driver.c | 25 +------------------------
>  3 files changed, 26 insertions(+), 24 deletions(-)
> 
> diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
> index 8129c7f..f8937a4 100644
> --- a/src/libxl/libxl_conf.c
> +++ b/src/libxl/libxl_conf.c
> @@ -978,6 +978,28 @@ error:
>      return -1;
>  }
>  
> +bool
> +libxlGetAutoballoonConf(libxlDriverPrivatePtr driver)
> +{
> +    const libxl_version_info *info;
> +    regex_t regex;
> +    int ret;
> +
> +    info = libxl_get_version_info(driver->ctx);
> +    if (!info)
> +        return true; /* default to on */
> +
> +    ret = regcomp(&regex,
> +            "(^| )dom0_mem=((|min:|max:)[0-9]+[bBkKmMgG]?,?)+($| )",
> +            REG_NOSUB | REG_EXTENDED);
> +    if (ret)
> +        return true;

Pre-existing, but if we fail to compile the regex, shouldn't we error out?

> +
> +    ret = regexec(&regex, info->commandline, 0, NULL, 0);
> +    regfree(&regex);
> +    return ret == REG_NOMATCH;
> +}
> +

ACK

Michal

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