usr/src/lib/libbc/libc/gen/common/getlogin.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 #pragma ident   "%Z%%M% %I%     %E% SMI"
  23
  24 /*
  25  * Copyright (c) 1992 by Sun Microsystems, Inc.
  26  */
  27
  28 #include <pwd.h>
  29 #include <stdio.h>
  30
  31 char *
  32 getlogin()
  33 {
  34         char *lgn;
  35
  36         if ((lgn = (char *)_getlogin()) == NULL) {
  37                 struct passwd *pwd;
  38                 if ((pwd = (struct passwd *)_getpwuid(_getuid())) != NULL)
  39                         return (pwd->pw_name);
  40         }
  41         return (lgn);
  42 }