Make 'lsusb -t' use the correct device class string names

This fixes the annoying "bInterfaceClass 0x0e not yet handled" messages
in 'lsusb -t' for video devices, and will handle any future class types
as well.

Just one step in merging 'lsusb -t' into the main portion of the program
instead of really just being a stand-alone program.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

lsusb-t.c

@@ -11,6 +11,7 @@
 
 #include "list.h"
 #include "lsusb.h"
+#include "names.h"
 
 #define MY_SYSFS_FILENAME_LEN 255
 #define MY_PATH_MAX 4096
@@ -117,58 +118,6 @@ static void dump_usbinterface(struct usbinterface *i)
 #endif
 
 static char tmp_str[128];
-static const char *bInterfaceClass_to_str(unsigned int dc)
-{
-	const char *s;
-	switch (dc) {
-	case 0:
-		s = ">ifc";
-		break;
-	case 1:
-		s = "audio";
-		break;
-	case 2:
-		s = "comm.";
-		break;
-	case 3:
-		s = "HID";
-		break;
-	case 5:
-		s = "PID";
-		break;
-	case 6:
-		s = "still";
-		break;
-	case 7:
-		s = "print";
-		break;
-	case 8:
-		s = "stor.";
-		break;
-	case 9:
-		s = "hub";
-		break;
-	case 10:
-		s = "data";
-		break;
-	case 11:
-		s = "scard";
-		break;
-	case 13:
-		s = "c-sec";
-		break;
-	case 254:
-		s = "app.";
-		break;
-	case 255:
-		s = "vend.";
-		break;
-	default:
-		snprintf(tmp_str, 128, "'bInterfaceClass 0x%02x not yet handled'", dc);;
-		s = tmp_str;
-	}
-	return s;
-}
 static const char *bDeviceClass_to_str(unsigned int dc)
 {
 	const char *s;
@@ -190,11 +139,15 @@ static void print_usbbusnode(struct usbbusnode *b)
 
 static void print_usbdevice(struct usbdevice *d, struct usbinterface *i)
 {
+	char subcls[128];
+
+	get_class_string(subcls, sizeof(subcls), i->bInterfaceClass);
+
 	if (i->bInterfaceClass == 9)
-		printf("Port %u: Dev %u, If %u, Class=%s, Driver=%s/%up, %sM\n", d->portnum, d->devnum, i->ifnum, bInterfaceClass_to_str(i->bInterfaceClass),
+		printf("Port %u: Dev %u, If %u, Class=%s, Driver=%s/%up, %sM\n", d->portnum, d->devnum, i->ifnum, subcls,
 		       i->driver, d->maxchild, d->speed);
 	else
-		printf("Port %u: Dev %u, If %u, Class=%s, Driver=%s, %sM\n", d->portnum, d->devnum, i->ifnum, bInterfaceClass_to_str(i->bInterfaceClass), i->driver,
+		printf("Port %u: Dev %u, If %u, Class=%s, Driver=%s, %sM\n", d->portnum, d->devnum, i->ifnum, subcls, i->driver,
 		       d->speed);
 }
 

lsusb.c

@@ -194,30 +194,6 @@ static int get_string(libusb_device_handle *dev, char *buf, size_t size, u_int8_
 	return 0;
 }
 
-static int get_class_string(char *buf, size_t size, u_int8_t cls)
-{
-	const char *cp;
-
-	if (size < 1)
-		return 0;
-	*buf = 0;
-	if (!(cp = names_class(cls)))
-		return 0;
-	return snprintf(buf, size, "%s", cp);
-}
-
-static int get_subclass_string(char *buf, size_t size, u_int8_t cls, u_int8_t subcls)
-{
-	const char *cp;
-
-	if (size < 1)
-		return 0;
-	*buf = 0;
-	if (!(cp = names_subclass(cls, subcls)))
-		return 0;
-	return snprintf(buf, size, "%s", cp);
-}
-
 static int get_protocol_string(char *buf, size_t size, u_int8_t cls, u_int8_t subcls, u_int8_t proto)
 {
 	const char *cp;
@@ -4015,11 +3991,6 @@ int main(int argc, char *argv[])
 		return EXIT_FAILURE;
 	}
 
-	if (treemode) {
-		/* treemode requires at least verblevel 1 */
-		verblevel += 1 - VERBLEVEL_DEFAULT;
-		return treedump();
-	}
 
 	/* by default, print names as well as numbers */
 	err = names_init(DATADIR "/usb.ids");
@@ -4034,6 +4005,14 @@ int main(int argc, char *argv[])
 				strerror(err));
 	status = 0;
 
+	if (treemode) {
+		/* treemode requires at least verblevel 1 */
+		verblevel += 1 - VERBLEVEL_DEFAULT;
+		status = treedump();
+		names_exit();
+		return status;
+	}
+
 	err = libusb_init(&ctx);
 	if (err) {
 		fprintf(stderr, "unable to initialize libusb: %i\n", err);

names.c

@@ -290,6 +290,30 @@ int get_product_string(char *buf, size_t size, u_int16_t vid, u_int16_t pid)
         return snprintf(buf, size, "%s", cp);
 }
 
+int get_class_string(char *buf, size_t size, u_int8_t cls)
+{
+	const char *cp;
+
+	if (size < 1)
+		return 0;
+	*buf = 0;
+	if (!(cp = names_class(cls)))
+		return 0;
+	return snprintf(buf, size, "%s", cp);
+}
+
+int get_subclass_string(char *buf, size_t size, u_int8_t cls, u_int8_t subcls)
+{
+	const char *cp;
+
+	if (size < 1)
+		return 0;
+	*buf = 0;
+	if (!(cp = names_subclass(cls, subcls)))
+		return 0;
+	return snprintf(buf, size, "%s", cp);
+}
+
 /* ---------------------------------------------------------------------- */
 
 static int new_vendor(const char *name, u_int16_t vendorid)

names.h

@@ -46,6 +46,8 @@ extern const char *names_countrycode(unsigned int countrycode);
 
 extern int get_vendor_string(char *buf, size_t size, u_int16_t vid);
 extern int get_product_string(char *buf, size_t size, u_int16_t vid, u_int16_t pid);
+extern int get_class_string(char *buf, size_t size, u_int8_t cls);
+extern int get_subclass_string(char *buf, size_t size, u_int8_t cls, u_int8_t subcls);
 
 extern int names_init(char *n);
 extern void names_exit(void);