Branch b1_6

[fs/lustre-release.git] / libsysio / include / creds.h

diff --git a/libsysio/include/creds.h b/libsysio/include/creds.h
index 90305e1..672dfcf 100644 (file)
--- a/libsysio/include/creds.h
+++ b/libsysio/include/creds.h
@@ -47,6 +47,11 @@
 #define _CREDS_H_
 
 /*
+ * Superuser's UID.
+ */
+#define _SYSIO_ROOT_UID        0
+
+/*
  * Data structure for user credentials
  */
 
@@ -56,4 +61,12 @@ struct creds {
        int creds_ngids;
 };
 
+
+#ifdef _SYSIO_ROOT_UID
+/*
+ * Is caller the superuser?
+ */
+#define _sysio_is_root(_crp) \
+       ((_crp)->creds_uid == _SYSIO_ROOT_UID)
+#endif
 #endif