Update.
[glibc.git] / login / getutid_r.c
blob862fc3f44b6484e190ecdafad3ac05f81f4aceb1
1 /* Copyright (C) 1996, 1997, 2001 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.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
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 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 #include <bits/libc-lock.h>
22 #include <errno.h>
23 #include <stdlib.h>
24 #include <utmp.h>
26 #include "utmp-private.h"
29 /* We have to use the lock in getutent_r.c. */
30 __libc_lock_define (extern, __libc_utmp_lock)
32 /* The jump table is also in getutent_r.c. */
33 extern struct utfuncs *__libc_utmp_jump_table;
36 int
37 __getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)
39 #if (_HAVE_UT_ID - 0) && (_HAVE_UT_TYPE - 0)
40 int retval;
42 /* Test whether ID has any of the legal types. */
43 if (id->ut_type != RUN_LVL && id->ut_type != BOOT_TIME
44 && id->ut_type != OLD_TIME && id->ut_type != NEW_TIME
45 && id->ut_type != INIT_PROCESS && id->ut_type != LOGIN_PROCESS
46 && id->ut_type != USER_PROCESS && id->ut_type != DEAD_PROCESS)
47 /* No, using '<' and '>' for the test is not possible. */
49 __set_errno (EINVAL);
50 *result = NULL;
51 return -1;
54 __libc_lock_lock (__libc_utmp_lock);
56 retval = (*__libc_utmp_jump_table->getutid_r) (id, buffer, result);
58 __libc_lock_unlock (__libc_utmp_lock);
60 return retval;
61 #else /* !_HAVE_UT_ID && !_HAVE_UT_TYPE */
62 __set_errno (ENOSYS);
63 return -1;
64 #endif
66 weak_alias (__getutid_r, getutid_r)