better seteuid() emulatino

diff --git a/compat.h b/compat.h
index 71d8045fed21e818147b1771d50fd58ac295eff3..b6e72fc6aa948266bd754e7a1ef458cf59ba88d7 100644 (file)
--- a/compat.h
+++ b/compat.h
@@ -122,25 +122,24 @@
 #endif /* GID_NO_CHANGE */
 
 /*
- * Emulate seteuid() for HP-UX
- */
-#ifdef __hpux
-#  define seteuid(_EUID)       (setresuid(UID_NO_CHANGE, _EUID, UID_NO_CHANGE))
-#endif /* __hpux */
-
-/*
- * Emulate seteuid() for AIX
+ * Emulate seteuid() for AIX via setuidx() -- needed for some versions of AIX
  */
 #ifdef _AIX
 #  include <sys/id.h>
 #  define seteuid(_EUID)       (setuidx(ID_EFFECTIVE|ID_REAL, _EUID))
+#  undef HAVE_SETEUID
+#  define HAVE_SETEUID         1
 #endif /* _AIX */
 
 /*
- * Emulate seteuid() for DYNIX
+ * Emulate seteuid() for HP-UX via setresuid(2) and seteuid(2) for others.
  */
-#ifdef _SEQUENT_
-#  define seteuid(_EUID)       (setresuid(UID_NO_CHANGE, _EUID))
-#endif /* _SEQUENT_ */
+#ifndef HAVE_SETEUID
+#  ifdef __hpux
+#    define seteuid(_EUID)     (setresuid(UID_NO_CHANGE, _EUID, UID_NO_CHANGE))
+#  else
+#    define seteuid(_EUID)     (setresuid(UID_NO_CHANGE, _EUID))
+#  endif /* __hpux */
+#endif /* HAVE_SETEUID */
 
 #endif /* _SUDO_COMPAT_H */