1: /* Copyright (C) 1996, 1997, 2001, 2002, 2004 Free Software Foundation, Inc.
    2:    This file is part of the GNU C Library.
    3:    Contributed by Ulrich Drepper <drepper@cygnus.com>
    4:    and Paul Janzen <pcj@primenet.com>, 1996.
    5: 
    6:    The GNU C Library is free software; you can redistribute it and/or
    7:    modify it under the terms of the GNU Lesser General Public
    8:    License as published by the Free Software Foundation; either
    9:    version 2.1 of the License, or (at your option) any later version.
   10: 
   11:    The GNU C Library is distributed in the hope that it will be useful,
   12:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   13:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   14:    Lesser General Public License for more details.
   15: 
   16:    You should have received a copy of the GNU Lesser General Public
   17:    License along with the GNU C Library; if not, write to the Free
   18:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   19:    02111-1307 USA.  */
   20: 
   21: #include <bits/libc-lock.h>
   22: #include <errno.h>
   23: #include <stdlib.h>
   24: #include <utmp.h>
   25: 
   26: #include "utmp-private.h"
   27: 
   28: 
   29: /* We have to use the lock in getutent_r.c.  */
   30: __libc_lock_define (extern, __libc_utmp_lock attribute_hidden)
   31: 
   32: 
   33: int
   34: __getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)
   35: {
   36: #if (_HAVE_UT_ID - 0) && (_HAVE_UT_TYPE - 0)
   37:   int retval;
   38: 
   39:   /* Test whether ID has any of the legal types.  */
   40:   if (id->ut_type != RUN_LVL && id->ut_type != BOOT_TIME
   41:       && id->ut_type != OLD_TIME && id->ut_type != NEW_TIME
   42:       && id->ut_type != INIT_PROCESS && id->ut_type != LOGIN_PROCESS
   43:       && id->ut_type != USER_PROCESS && id->ut_type != DEAD_PROCESS)
   44:     /* No, using '<' and '>' for the test is not possible.  */
   45:     {
   46:       __set_errno (EINVAL);
   47:       *result = NULL;
   48:       return -1;
   49:     }
   50: 
   51:   __libc_lock_lock (__libc_utmp_lock);
   52: 
   53:   retval = (*__libc_utmp_jump_table->getutid_r) (id, buffer, result);
   54: 
   55:   __libc_lock_unlock (__libc_utmp_lock);
   56: 
   57:   return retval;
   58: #else   /* !_HAVE_UT_ID && !_HAVE_UT_TYPE */
   59:   __set_errno (ENOSYS);
   60:   return -1;
   61: #endif
   62: }
   63: weak_alias (__getutid_r, getutid_r)