X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fio%2Fkfile.h;h=56f7d57aa3e7e3ea895625e58be98750e10b71a8;hb=abfc101345b4d65ed18df65f39f02e3c8e78a299;hp=040e04a8684495c99266103348d2995d278c2871;hpb=cd7538b224bbe4fb287b96903678df6ae435522c;p=bertos.git

diff --git a/bertos/io/kfile.h b/bertos/io/kfile.h
index 040e04a8..56f7d57a 100644
--- a/bertos/io/kfile.h
+++ b/bertos/io/kfile.h
@@ -223,6 +223,12 @@ int kfile_genericClose(struct KFile *fd);
 /**
  * Read \a size bytes from file \a fd into \a buf.
  *
+ * This function reads at most the number of requested bytes into the
+ * provided buffer.
+ * The value returned may be less than the requested bytes in case EOF is
+ * reached OR an error occurred. You need to check the error conditions
+ * using kfile_error() to understand which case happened.
+ *
  * \note This function will block if there are less than \a size bytes
  *       to read.
  *
@@ -239,6 +245,16 @@ INLINE size_t kfile_read(struct KFile *fd, void *buf, size_t size)
 int kfile_gets(struct KFile *fd, char *buf, int size);
 int kfile_gets_echo(struct KFile *fd, char *buf, int size, bool echo);
 
+/**
+ * Copy \a size bytes from file \a src to \a dst.
+ * 
+ * \param src Source KFile.
+ * \param dst Destionation KFile.
+ * \param size number of bytes to copy.
+ * \return the number of bytes copied.
+ */
+kfile_off_t kfile_copy(KFile *src, KFile *dst, kfile_off_t size);
+
 /**
  * Write \a size bytes from buffer \a buf into KFile \a fd.
  *