On 2018-03-05 17:44, [ext] Andreas J. Reichel wrote:
> From: Andreas Reichel <[email protected]>
> 
> Until now, providing no arguments caused bg_setenv to recalculate
> the CRC of the latest environment and rewrite it.
> 
> This patch prevent it from doing this rather unintuitive action and
> output a string to tell the user he must give further arguments
> instead.
> 
> Signed-off-by: Andreas Reichel <[email protected]>
> ---
>  tools/bg_setenv.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/tools/bg_setenv.c b/tools/bg_setenv.c
> index 37f50ce..ca64b92 100644
> --- a/tools/bg_setenv.c
> +++ b/tools/bg_setenv.c
> @@ -542,6 +542,14 @@ int main(int argc, char **argv)
>       bool write_mode = (bool)strstr(argv[0], "bg_setenv");
>       if (write_mode) {
>               argp = &argp_setenv;
> +
> +             if (argc < 2) {
> +                     printf("No task to perform. Please specify at least one"
> +                            " optional argument. See --help for further"
> +                            " information.\n");
> +                     return 1;
> +             }
> +
>       } else {
>               argp = &argp_printenv;
>               verbosity = true;
> 

Thanks, applied to next.

Jan

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