usr/src/lib/libbc/libc/gen/common/on_exit.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 #include <sys/types.h>
  25
  26 /*
  27  * Copyright (c) 1987 by Sun Microsystems, Inc.
  28  */
  29
  30 char    *malloc();
  31
  32 struct handlers {
  33         void    (*handler)();
  34         caddr_t arg;
  35         struct  handlers *next;
  36 };
  37
  38 extern  struct handlers *_exit_handlers;
  39
  40 int
  41 on_exit(handler, arg)
  42         void (*handler)();
  43         caddr_t arg;
  44 {
  45         register struct handlers *h =
  46             (struct handlers *)malloc(sizeof (*h));
  47
  48         if (h == 0)
  49                 return (-1);
  50         h->handler = handler;
  51         h->arg = arg;
  52         h->next = _exit_handlers;
  53         _exit_handlers = h;
  54         return (0);
  55 }