On Thu, Feb 8, 2018 at 6:56 AM, Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:
> Except silentoldconfig, valid_stdin is 1, so check_stdin() is no-op.
>
> oldconfig and silentoldconfig work almost in the same way except that
> the latter generates additional files. Both ask users for input for
> new symbols.
>
> I do not know why only silentoldconfig requires stdio be tty.
>
> $ rm -f .config; touch .config
> $ yes "" | make oldconfig > stdout
> $ rm -f .config; touch .config
> $ yes "" | make silentoldconfig > stdout
> make[1]: *** [silentoldconfig] Error 1
> make: *** [silentoldconfig] Error 2
> $ tail -n 4 stdout
> Console input/output is redirected. Run 'make oldconfig' to update configuration.
>
> scripts/kconfig/Makefile:40: recipe for target 'silentoldconfig' failed
> Makefile:507: recipe for target 'silentoldconfig' failed
>
> Redirection is useful, for example, for testing where we want to give
> particular key inputs from a test file, then check the result.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> ---
>
> scripts/kconfig/conf.c | 14 --------------
> 1 file changed, 14 deletions(-)
>
> diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
> index 307bc3f..358e2e4 100644
> --- a/scripts/kconfig/conf.c
> +++ b/scripts/kconfig/conf.c
> @@ -39,7 +39,6 @@ static enum input_mode input_mode = oldaskconfig;
>
> static int indent = 1;
> static int tty_stdio;
> -static int valid_stdin = 1;
> static int sync_kconfig;
> static int conf_cnt;
> static char line[PATH_MAX];
> @@ -72,16 +71,6 @@ static void strip(char *str)
> *p-- = 0;
> }
>
> -static void check_stdin(void)
> -{
> - if (!valid_stdin) {
> - printf(_("aborted!\n\n"));
> - printf(_("Console input/output is redirected. "));
> - printf(_("Run 'make oldconfig' to update configuration.\n\n"));
> - exit(1);
> - }
> -}
> -
> /* Helper function to facilitate fgets() by Jean Sacren. */
> static void xfgets(char *str, int size, FILE *in)
> {
> @@ -113,7 +102,6 @@ static int conf_askvalue(struct symbol *sym, const char *def)
> printf("%s\n", def);
> return 0;
> }
> - check_stdin();
> /* fall through */
> case oldaskconfig:
> fflush(stdout);
> @@ -315,7 +303,6 @@ static int conf_choice(struct menu *menu)
> printf("%d\n", cnt);
> break;
> }
> - check_stdin();
> /* fall through */
> case oldaskconfig:
> fflush(stdout);
> @@ -650,7 +637,6 @@ int main(int ac, char **av)
> return 1;
> }
> }
> - valid_stdin = tty_stdio;
> }
>
> switch (input_mode) {
> --
> 2.7.4
>
Reviewed-by: Ulf Magnusson <ulfalizer@xxxxxxxxx>
Lots of weird stuff indeed...
Cheers,
Ulf
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