From 6a7c0258ae558172eda31c56c9ed21605d02bec0 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: May 21 2018 05:44:56 +0000
Subject: driver: added --cmd support, added 'stat' as an available command.


---

diff --git a/include/ntux/ntux.h b/include/ntux/ntux.h
index 896f301..7e9ca52 100644
--- a/include/ntux/ntux.h
+++ b/include/ntux/ntux.h
@@ -32,6 +32,11 @@ extern "C" {
 #define NTUX_DRIVER_VERSION		0x0010
 #define NTUX_DRIVER_DRY_RUN		0x0020
 
+enum ntux_cmd {
+	NTUX_CMD_DEFAULT,
+	NTUX_CMD_STAT,
+};
+
 struct ntux_source_version {
 	int		major;
 	int		minor;
@@ -55,6 +60,7 @@ struct ntux_common_ctx {
 	uint64_t			drvflags;
 	uint64_t			actflags;
 	uint64_t			fmtflags;
+	enum ntux_cmd			cmd;
 };
 
 struct ntux_driver_ctx {
diff --git a/src/driver/ntux_driver_ctx.c b/src/driver/ntux_driver_ctx.c
index 3759ef7..0398d5f 100644
--- a/src/driver/ntux_driver_ctx.c
+++ b/src/driver/ntux_driver_ctx.c
@@ -69,8 +69,9 @@ static int ntux_driver_usage(
 	char header[512];
 
 	snprintf(header,sizeof(header),
-		"Usage: %s [options] <file>...\n" "Options:\n",
-		program);
+		"Usage: %s [options] ...\n"
+		"Usage: %s [options] --cmd=<command> <arg> <arg> ...\n" "Options:\n",
+		program,program);
 
 	argv_usage(stdout,header,optv,arg);
 	argv_free(meta);
@@ -164,6 +165,11 @@ int ntux_get_driver_ctx(
 				case TAG_VERSION:
 					cctx.drvflags |= NTUX_DRIVER_VERSION;
 					break;
+
+				case TAG_CMD:
+					if (!strcmp(entry->arg,"stat"))
+						cctx.cmd = NTUX_CMD_STAT;
+					break;
 			}
 		} else
 			nunits++;
diff --git a/src/internal/ntux_driver_impl.h b/src/internal/ntux_driver_impl.h
index 822f131..6c635de 100644
--- a/src/internal/ntux_driver_impl.h
+++ b/src/internal/ntux_driver_impl.h
@@ -19,6 +19,7 @@ extern   const ntapi_vtbl * ntux_ntapi;
 enum app_tags {
 	TAG_HELP,
 	TAG_VERSION,
+	TAG_CMD,
 };
 
 struct ntux_driver_ctx_impl {
diff --git a/src/skin/ntux_skin_default.c b/src/skin/ntux_skin_default.c
index 7bb0045..fa4c33d 100644
--- a/src/skin/ntux_skin_default.c
+++ b/src/skin/ntux_skin_default.c
@@ -8,5 +8,8 @@ const struct argv_option ntux_default_options[] = {
 	{"help",		'h',TAG_HELP,ARGV_OPTARG_OPTIONAL,0,"short|long",0,
 				"show usage information [listing %s options only]"},
 
+	{"cmd",			0,TAG_CMD,ARGV_OPTARG_REQUIRED,0,"stat",0,
+				"invoke an internal ntux command"},
+
 	{0,0,0,0,0,0,0,0}
 };