error: depend on stdio

[gnulib.git] / lib / pt_chown.c

diff --git a/lib/pt_chown.c b/lib/pt_chown.c
index d79ad3a..0fee56c 100644 (file)
--- a/lib/pt_chown.c
+++ b/lib/pt_chown.c
@@ -1,5 +1,5 @@
-/* pt_chown - helper program for `grantpt'.
-   Copyright (C) 1998, 1999, 2009, 2010 Free Software Foundation, Inc.
+/* pt_chown - helper program for 'grantpt'.
+   Copyright (C) 1998-1999, 2009-2013 Free Software Foundation, Inc.
    Contributed by C. Scott Ananian <cananian@alumni.princeton.edu>, 1998.
 
    This program is free software: you can redistribute it and/or modify
@@ -25,7 +25,8 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
-#include "idpriv.h"
+#include "root-uid.h"
+
 #include "pty-private.h"
 
 /* For security reasons, we try to minimize the dependencies on libraries
@@ -52,7 +53,7 @@ do_pt_chown (void)
   if (stat (pty, &st) < 0 || !S_ISCHR (st.st_mode))
     return FAIL_EINVAL;
 
-  /* Get the group ID of the special `tty' group.  */
+  /* Get the group ID of the special 'tty' group.  */
   p = getgrnam (TTY_GROUP);
   gid = p ? p->gr_gid : getgid ();
 
@@ -76,16 +77,15 @@ main (int argc, char *argv[])
 {
   uid_t euid = geteuid ();
 
-  if (argc == 1 && euid == 0)
+  if (argc == 1 && euid == ROOT_UID)
     {
       /* Normal invocation of this program is with no arguments and
          with privileges.  */
       return do_pt_chown ();
     }
 
-  /* We aren't going to be using privileges, so drop them right now. */
-  if (idpriv_drop () < 0)
-    return EXIT_FAILURE;
+  /* It would be possible to drop setuid/setgid privileges here.  But it is not
+     really needed, since the code below only calls strcmp and [f]printf.  */
 
   {
     int do_help = 0;
@@ -154,7 +154,7 @@ main (int argc, char *argv[])
   }
 
   /* Check if we are properly installed.  */
-  if (euid != 0)
+  if (euid != ROOT_UID)
     {
       fprintf (stderr, "pt_chown: needs to be installed setuid 'root'\n");
       return FAIL_EXEC;