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8f2ece69 1/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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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.
b8fe19fa 5
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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.
b8fe19fa 10
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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.
b8fe19fa 15
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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. */
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20
21#include <errno.h>
5107cf1d 22#include <bits/libc-lock.h>
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23#include <utmp.h>
24
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25#include "utmp-private.h"
26
27
28/* We have to use the lock in getutent_r.c. */
29__libc_lock_define (extern, __libc_utmp_lock)
30
31/* The jump table is also in getutent_r.c. */
32extern struct utfuncs *__libc_utmp_jump_table;
33
b8fe19fa 34
b8fe19fa 35int
8a523922 36__getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)
b8fe19fa 37{
0200214b 38#if (_HAVE_UT_ID - 0) && (_HAVE_UT_TYPE - 0)
0413b54c 39 int retval;
8a523922 40
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41 /* Test whether ID has any of the legal types. */
42 if (id->ut_type != RUN_LVL && id->ut_type != BOOT_TIME
43 && id->ut_type != OLD_TIME && id->ut_type != NEW_TIME
44 && id->ut_type != INIT_PROCESS && id->ut_type != LOGIN_PROCESS
45 && id->ut_type != USER_PROCESS && id->ut_type != DEAD_PROCESS)
46 /* No, using '<' and '>' for the test is not possible. */
47 {
c4029823 48 __set_errno (EINVAL);
8a523922 49 *result = NULL;
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50 return -1;
51 }
52
8a523922 53 __libc_lock_lock (__libc_utmp_lock);
49b98627 54
0413b54c 55 retval = (*__libc_utmp_jump_table->getutid_r) (id, buffer, result);
b8fe19fa 56
8a523922 57 __libc_lock_unlock (__libc_utmp_lock);
b8fe19fa 58
8a523922 59 return retval;
0200214b 60#else /* !_HAVE_UT_ID && !_HAVE_UT_TYPE */
c4029823 61 __set_errno (ENOSYS);
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62 return -1;
63#endif
b8fe19fa 64}
23396375 65weak_alias (__getutid_r, getutid_r)