kern/error: new ERROR_EXIST and ERROR_IO macros

2 files changed, 6 insertions, 0 deletions

diff --git a/kern/error.c b/kern/error.c
index e37c67ce..02a26d0c 100644
--- a/kern/error.c
+++ b/kern/error.c
@@ -36,6 +36,10 @@ error_str(int error)
         return "Bad address";
     case ERROR_NODEV:
         return "No such device";
+    case ERROR_EXIST:
+        return "Entry exists";
+    case ERROR_IO:
+        return "Input/output error";
     default:
         return "unknown error";
     }
diff --git a/kern/error.h b/kern/error.h
index 62859f47..96a26206 100644
--- a/kern/error.h
+++ b/kern/error.h
@@ -24,6 +24,8 @@
 #define ERROR_BUSY  4
 #define ERROR_FAULT 5
 #define ERROR_NODEV 6
+#define ERROR_EXIST 7
+#define ERROR_IO    8
 
 /*
  * Return a string describing the given error.