[libvirt] [PATCH] virsh: new environment variable VIRSH_HISTSIZE

[Daniel P. Berrange]

On Sun, Oct 27, 2013 at 10:17:29AM +0100, Pavel Raiskup wrote:
> Allow adjust the number of commands to remember in the command
> history.
> 
> * tools/virsh.c (vshReadlineInit): Read and sanity the
> VIRSH_HISTSIZE variable.
> (VIRSH_HISTSIZE_MAX): New constant.
> * tools/virsh.pod: Document VIRSH_HISTSIZE variable.
> ---
>  tools/virsh.c   | 17 ++++++++++++++++-
>  tools/virsh.pod |  5 +++++
>  2 files changed, 21 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/virsh.c b/tools/virsh.c
> index bad78c9..58bc841 100644
> --- a/tools/virsh.c
> +++ b/tools/virsh.c
> @@ -2748,11 +2748,14 @@ vshReadlineCompletion(const char *text, int start,
>      return matches;
>  }
>  
> +#define VIRSH_HISTSIZE_MAX 500000
>  
>  static int
>  vshReadlineInit(vshControl *ctl)
>  {
>      char *userdir = NULL;
> +    int max_history = 500;
> +    char *histsize_str;
>  
>      /* Allow conditional parsing of the ~/.inputrc file. */
>      rl_readline_name = "virsh";
> @@ -2761,7 +2764,19 @@ vshReadlineInit(vshControl *ctl)
>      rl_attempted_completion_function = vshReadlineCompletion;
>  
>      /* Limit the total size of the history buffer */
> -    stifle_history(500);
> +    if ((histsize_str = getenv("VIRSH_HISTSIZE"))) {

'getenv' is now forbidden in libvirt code - use  virGetEnvBlockSUID
instead in this context.

If you run 'make syntax-check' before submitting pathces it'll warn
you of various coding style/rule issues.

Regards,
Daniel
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