Remove K&R cruft.

[gnulib.git] / lib / getusershell.c

diff --git a/lib/getusershell.c b/lib/getusershell.c
index 35f72db..3401c88 100644 (file)
--- a/lib/getusershell.c
+++ b/lib/getusershell.c
@@ -1,5 +1,5 @@
 /* getusershell.c -- Return names of valid user shells.
-   Copyright (C) 1991, 1997, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1991, 1997, 2000, 2001, 2003 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -22,12 +22,21 @@
 #endif
 
 #ifndef SHELLS_FILE
+# ifndef __DJGPP__
 /* File containing a list of nonrestricted shells, one per line. */
-# define SHELLS_FILE "/etc/shells"
+#  define SHELLS_FILE "/etc/shells"
+# else
+/* This is a horrible kludge.  Isn't there a better way?  */
+#  define SHELLS_FILE "/dev/env/DJDIR/etc/shells"
+# endif
 #endif
 
 #include <stdio.h>
+#if HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
 #include <ctype.h>
+#include "unlocked-io.h"
 #include "xalloc.h"
 
 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
@@ -40,9 +49,17 @@
 
 static int readname ();
 
+#if ! defined ADDITIONAL_DEFAULT_SHELLS && defined __MSDOS__
+# define ADDITIONAL_DEFAULT_SHELLS \
+  "c:/dos/command.com", "c:/windows/command.com", "c:/command.com",
+#else
+# define ADDITIONAL_DEFAULT_SHELLS /* empty */
+#endif
+
 /* List of shells to use if the shells file is missing. */
 static char const* const default_shells[] =
 {
+  ADDITIONAL_DEFAULT_SHELLS
   "/bin/sh", "/bin/csh", "/usr/bin/sh", "/usr/bin/csh", NULL
 };
 
@@ -100,10 +117,8 @@ void
 setusershell ()
 {
   default_index = 0;
-  if (shellstream == NULL)
-    shellstream = fopen (SHELLS_FILE, "r");
-  else
-    fseek (shellstream, 0L, 0);
+  if (shellstream)
+    rewind (shellstream);
 }
 
 /* Close the shells file. */
@@ -138,7 +153,7 @@ readname (name, size, stream)
   if (*name == NULL)
     {
       *size = 10;
-      *name = (char *) xmalloc (*size);
+      *name = xmalloc (*size);
     }
 
   /* Skip blank space.  */
@@ -151,7 +166,7 @@ readname (name, size, stream)
       while (name_index >= *size)
        {
          *size *= 2;
-         *name = (char *) xrealloc (*name, *size);
+         *name = xrealloc (*name, *size);
        }
       c = getc (stream);
     }