Sistema l'errore da me commesso in fase di conversione...

[bertos.git] / kern / kfile.h

diff --git a/kern/kfile.h b/kern/kfile.h
old mode 100755 (executable)
new mode 100644 (file)
index 974502e..953ed50
--- a/kern/kfile.h
+++ b/kern/kfile.h
@@ -14,6 +14,9 @@
 
 /*#*
  *#* $Log$
+ *#* Revision 1.3  2007/10/04 19:39:25  batt
+ *#* Add seek constants.
+ *#*
  *#* Revision 1.1  2007/06/14 14:42:48  batt
  *#* Move kfile to kern/ directory; remove duplicate file.h.
  *#*
@@ -47,14 +50,27 @@
 /* fwd decl */
 struct _KFile;
 
-typedef size_t (*ReadFunc_t)   (struct _KFile *fd, char *buf, size_t size);
-typedef size_t (*WriteFunc_t)  (struct _KFile *fd, const char *buf, size_t size);
-typedef        bool    (*SeekFunc_t)   (struct _KFile *fd, int32_t offset);
-typedef bool   (*OpenFunc_t)   (struct _KFile *fd, const char *name, int mode);
-typedef bool   (*CloseFunc_t)  (struct _KFile *fd);
+/**
+ * Costants for repositioning read/write file offset.
+ * These are needed because on some embedded platforms
+ * ANSI I/O library may not be present.
+ */
+typedef enum KSeekMode
+{
+       KSM_SEEK_SET, ///< Seek from file beginning.
+       KSM_SEEK_CUR, ///< Seek from file current position.
+       KSM_SEEK_END, ///< Seek from file end.
+} KSeekMode;
+
 
+typedef size_t (*ReadFunc_t)  (struct _KFile *fd, void *buf, size_t size);
+typedef size_t (*WriteFunc_t) (struct _KFile *fd, const void *buf, size_t size);
+typedef        int32_t (*SeekFunc_t)  (struct _KFile *fd, int32_t offset, KSeekMode whence);
+typedef bool   (*OpenFunc_t)  (struct _KFile *fd, const char *name, int mode);
+typedef bool   (*CloseFunc_t) (struct _KFile *fd);
 
-/* Context data for callback functions which operate on
+/**
+ * Context data for callback functions which operate on
  * pseudo files.
  */
 typedef struct _KFile