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282cbdef 1/* Copyright (C) 1996, 1997, 2001 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
8a523922 6 The GNU C Library is free software; you can redistribute it and/or
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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.
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
41bdb6e2 14 Lesser General Public License for more details.
b8fe19fa 15
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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. */
b8fe19fa 20
5107cf1d 21#include <bits/libc-lock.h>
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22#include <errno.h>
23#include <stdlib.h>
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24#include <utmp.h>
25
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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)
31
32/* The jump table is also in getutent_r.c. */
33extern struct utfuncs *__libc_utmp_jump_table;
34
b8fe19fa 35
b8fe19fa 36int
8a523922 37__getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)
b8fe19fa 38{
0200214b 39#if (_HAVE_UT_ID - 0) && (_HAVE_UT_TYPE - 0)
0413b54c 40 int retval;
8a523922 41
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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. */
48 {
c4029823 49 __set_errno (EINVAL);
8a523922 50 *result = NULL;
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51 return -1;
52 }
53
8a523922 54 __libc_lock_lock (__libc_utmp_lock);
49b98627 55
0413b54c 56 retval = (*__libc_utmp_jump_table->getutid_r) (id, buffer, result);
b8fe19fa 57
8a523922 58 __libc_lock_unlock (__libc_utmp_lock);
b8fe19fa 59
8a523922 60 return retval;
0200214b 61#else /* !_HAVE_UT_ID && !_HAVE_UT_TYPE */
c4029823 62 __set_errno (ENOSYS);
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63 return -1;
64#endif
b8fe19fa 65}
23396375 66weak_alias (__getutid_r, getutid_r)