r115: added libusb_strerror (Francesco Montorsi)

1 files changed, 6 insertions, 0 deletions

diff --git a/libusb/libusb.h b/libusb/libusb.h
index a7d34bf..d8b17de 100644
--- a/libusb/libusb.h
+++ b/libusb/libusb.h
@@ -609,6 +609,8 @@ typedef struct libusb_device_handle libusb_device_handle;
 /** \ingroup misc
  * Error codes. Most libusb functions return 0 on success or one of these
  * codes on failure.
+ * You can use libusb_strerror() to retrieve a short string description of
+ * a libusb_error enumeration value.
  */
 enum libusb_error {
 	/** Success (no error) */
@@ -652,6 +654,9 @@ enum libusb_error {
 
 	/** Other error */
 	LIBUSB_ERROR_OTHER = -99
+    
+    /* IMPORTANT: when adding new values to this enum, remember to update the
+                  libusb_strerror() function implementation! */
 };
 
 /** \ingroup asyncio
@@ -790,6 +795,7 @@ struct libusb_transfer {
 int libusb_init(libusb_context **ctx);
 void libusb_exit(libusb_context *ctx);
 void libusb_set_debug(libusb_context *ctx, int level);
+const char* libusb_strerror(enum libusb_error errcode);
 
 ssize_t libusb_get_device_list(libusb_context *ctx,
 	libusb_device ***list);