1 files changed, 51 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/seteuid.c b/sysdeps/unix/sysv/linux/seteuid.c
index 37fb72c020..c8e3950cfa 100644
--- a/sysdeps/unix/sysv/linux/seteuid.c
+++ b/sysdeps/unix/sysv/linux/seteuid.c
@@ -1 +1,51 @@
-#include <sysdeps/unix/bsd/seteuid.c>
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#ifdef __NR_setresuid
+
+extern int __syscall_setresuid (uid_t ruid, uid_t euid, uid_t suid);
+
+int
+seteuid (uid_t uid)
+{
+  int result;
+
+  if (uid == (uid_t) ~0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  /* First try the syscall.  */
+  result = __syscall_setresuid (-1, uid, -1);
+  if (result == -1 && errno == ENOSYS)
+    /* No system call available.  Use emulation.  This may not work
+       since `setreuid' also sets the saved user ID when UID is not
+       equal to the real user ID, making it impossible to switch back.  */
+    result = __setreuid (-1, uid);
+
+  return result;
+}
+#else
+# include <sysdeps/unix/bsd/seteuid.c>
+#endif