diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 25ade3e36..c63b64772 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,7 @@
+2005-02-23  Corinna Vinschen  <corinna@vinschen.de>
+
+	* libc/include/sys/unistd.h: Define getpeereid for Cygwin.
+
 2005-02-22  Corinna Vinschen  <corinna@vinschen.de>
 
 	* libc/include/sys/unistd.h: Define fdatasync also for Cygwin.
diff --git a/newlib/libc/include/sys/unistd.h b/newlib/libc/include/sys/unistd.h
index 9b845746a..e9215e24d 100644
--- a/newlib/libc/include/sys/unistd.h
+++ b/newlib/libc/include/sys/unistd.h
@@ -73,6 +73,9 @@ int _EXFUN(getlogin_r, (char *name, size_t namesize) );
 #endif
 char 	_EXFUN(*getpass, (const char *__prompt));
 size_t  _EXFUN(getpagesize, (void));
+#if defined(__CYGWIN__)
+int    _EXFUN(getpeereid, (int, uid_t *, gid_t *));
+#endif
 pid_t   _EXFUN(getpgid, (pid_t));
 pid_t   _EXFUN(getpgrp, (void ));
 pid_t   _EXFUN(getpid, (void ));