1 files changed, 70 insertions, 0 deletions
diff --git a/grp/putgrent.c b/grp/putgrent.c
new file mode 100644
index 0000000000..7d7732a9c8
--- /dev/null
+++ b/grp/putgrent.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 1991, 1992, 1996, 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 <stdio.h>
+#include <grp.h>
+
+#ifdef USE_IN_LIBIO
+# define flockfile(s) _IO_flockfile (s)
+# define funlockfile(s) _IO_funlockfile (s)
+#endif
+
+#define _S(x)	x ? x : ""
+
+/* Write an entry to the given stream.
+   This must know the format of the group file.  */
+int
+putgrent (gr, stream)
+     const struct group *gr;
+     FILE *stream;
+{
+  int retval;
+
+  if (gr == NULL || stream == NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  flockfile (stream);
+
+  retval = fprintf (stream, "%s:%s:%u:",
+		    gr->gr_name, _S (gr->gr_passwd), gr->gr_gid);
+  if (retval < 0)
+    return -1;
+
+  if (gr->gr_mem != NULL)
+    {
+      int i;
+
+      for (i = 0 ; gr->gr_mem[i] != NULL; i++)
+	if (fprintf (stream, "%c%s", i == 0 ? ':' : ',', gr->gr_mem[i]) < 0)
+	  {
+	    /* What else can we do?  */
+	    funlockfile (stream);
+	    return -1;
+	  }
+    }
+
+  retval = fputc_unlocked ('\n', stream);
+
+  funlockfile (stream);
+
+  return retval < 0 ? -1 : 0;
+}