[ltt-dev] [UST PATCH] Allow backward compatibility to ustctl <= 0.11 for some commands

[nils.carlson@ludd.ltu.se (Nils Carlson)]

Hi,

Any reason you want to ifdef these? The idea with the new api was to  
make it nicer, but I wouldn't mind being backwards compatible as well.

If its ok with you I can pull this patch tomorrow and remove the  
#ifdefs?

/Nils
On Feb 24, 2011, at 4:46 PM, Jason Wessel wrote:

> The rewrite of the ustctl broke all the existing scripts
> that make use of ustctl.  This allows the original commands,
> examples, and external scripts to continue working properly.
>
> This covers the commands:
>
> --list-markers
> --list-trace-events
> --alloc-trace
> --start-trace
> --stop-trace
> --create-trace
> --destroy-trace
> --enable-marker
> --disable-marker
>
> Signed-off-by: Jason Wessel <jason.wessel at windriver.com>
> ---
> ustctl/ustctl.c |   74 ++++++++++++++++++++++++++++++++++++++++++++++ 
> ++++++--
> 1 files changed, 71 insertions(+), 3 deletions(-)
>
> diff --git a/ustctl/ustctl.c b/ustctl/ustctl.c
> index c1bbe8c..5463a1c 100644
> --- a/ustctl/ustctl.c
> +++ b/ustctl/ustctl.c
> @@ -45,8 +45,40 @@ void usage(const char *process_name)
> 	list_cli_cmds(CLI_DESCRIPTIVE_LIST);
> }
>
> +#define DASH_DASH_COMPAT 1
> +#ifdef DASH_DASH_COMPAT
> +/*
> + * If DASH_DASH_COMPAT is defined allow the some of the ustctl  
> command
> + * in version <= 0.11 commands to live on a while longer such that
> + * scripts do not immediately have to be changed.
> + */
> +enum command {
> +	CREATE_TRACE=1000,
> +	ALLOC_TRACE,
> +	START_TRACE,
> +	STOP_TRACE,
> +	DESTROY_TRACE,
> +	LIST_MARKERS,
> +	LIST_TRACE_EVENTS,
> +	ENABLE_MARKER,
> +	DISABLE_MARKER,
> +};
> +
> +#endif /* DASH_DASH_COMPAT */
> +
> struct option options[] =
> {
> +#ifdef DASH_DASH_COMPAT
> +	{ "create-trace", 0, 0, CREATE_TRACE },
> +	{ "alloc-trace", 0, 0, ALLOC_TRACE },
> +	{ "start-trace", 0, 0, START_TRACE },
> +	{ "stop-trace", 0, 0, STOP_TRACE },
> +	{ "destroy-trace", 0, 0, DESTROY_TRACE },
> +	{ "list-markers", 0, 0, LIST_MARKERS },
> +	{ "list-trace-events", 0, 0, LIST_TRACE_EVENTS},
> +	{ "enable-marker", 0, 0, ENABLE_MARKER },
> +	{ "disable-marker", 0, 0, DISABLE_MARKER },
> +#endif /* DASH_DASH_COMPAT */
> 	{"help", 2, NULL, 'h'},
> 	{"list", 0, NULL, 'l'},
> 	{"extended-list", 0, NULL, 'e'},
> @@ -56,6 +88,7 @@ struct option options[] =
> int main(int argc, char *argv[])
> {
> 	struct cli_cmd *cli_cmd;
> +	char **args = argv;
> 	int opt;
>
> 	if(argc <= 1) {
> @@ -85,20 +118,55 @@ int main(int argc, char *argv[])
> 		case 'e':
> 			list_cli_cmds(CLI_EXTENDED_LIST);
> 			exit(EXIT_FAILURE);
> +#ifdef DASH_DASH_COMPAT
> +		case LIST_MARKERS:
> +		case LIST_TRACE_EVENTS:
> +		case CREATE_TRACE:
> +		case ALLOC_TRACE:
> +		case START_TRACE:
> +		case STOP_TRACE:
> +		case DESTROY_TRACE:
> +		case ENABLE_MARKER:
> +		case DISABLE_MARKER:
> +		    {
> +			int i;
> +			args = (char **)malloc(sizeof(char **) * argc + 3);
> +			optind--;
> +			args[optind] = strdup(&argv[optind][2]);
> +			for (i = optind + 1; i < argc; i++) {
> +				args[i] = argv[i];
> +			}
> +			if (opt >= CREATE_TRACE && opt <= DESTROY_TRACE) {
> +				args[argc] = strdup("auto");
> +				argc++;
> +			}
> +			if (opt >= ENABLE_MARKER && opt <= DISABLE_MARKER) {
> +				args[argc] = args[argc - 2];
> +				args[argc - 2] = args[argc - 1];
> +				args[argc - 1] = strdup("auto");
> +				argc++;
> +			}
> +			args[argc] = NULL;
> +			goto do_cli;
> +		    }
> +#endif /* DASH_DASH_COMPAT */
> 		default:
> 			fprintf(stderr, "Unknown option\n");
> 			break;
> 		}
> 	}
>
> -	cli_cmd = find_cli_cmd(argv[optind]);
> +#ifdef DASH_DASH_COMPAT
> +do_cli:
> +#endif /* DASH_DASH_COMPAT */
> +	cli_cmd = find_cli_cmd(args[optind]);
> 	if (!cli_cmd) {
> 		fprintf(stderr, "No such command %s\n",
> -			argv[optind]);
> +			args[optind]);
> 		exit(EXIT_FAILURE);
> 	}
>
> -	cli_dispatch_cmd(cli_cmd, argc - optind, &argv[optind]);
> +	cli_dispatch_cmd(cli_cmd, argc - optind, &args[optind]);
>
> 	return 0;
> }
> -- 
> 1.6.6.2
>
>
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