| 1 | /* Copyright (C) 1996-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <libc-lock.h> |
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| 19 | #include <errno.h> |
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| 20 | #include <stdlib.h> |
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| 21 | #include <utmp.h> |
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| 22 | |
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| 23 | #include "utmp-private.h" |
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| 24 | |
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| 25 | |
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| 26 | /* We have to use the lock in getutent_r.c. */ |
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| 27 | __libc_lock_define (extern, __libc_utmp_lock attribute_hidden) |
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| 28 | |
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| 29 | |
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| 30 | int |
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| 31 | __getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result) |
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| 32 | { |
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| 33 | int retval; |
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| 34 | |
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| 35 | /* Test whether ID has any of the legal types. */ |
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| 36 | if (id->ut_type != RUN_LVL && id->ut_type != BOOT_TIME |
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| 37 | && id->ut_type != OLD_TIME && id->ut_type != NEW_TIME |
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| 38 | && id->ut_type != INIT_PROCESS && id->ut_type != LOGIN_PROCESS |
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| 39 | && id->ut_type != USER_PROCESS && id->ut_type != DEAD_PROCESS) |
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| 40 | /* No, using '<' and '>' for the test is not possible. */ |
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| 41 | { |
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| 42 | __set_errno (EINVAL); |
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| 43 | *result = NULL; |
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| 44 | return -1; |
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| 45 | } |
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| 46 | |
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| 47 | __libc_lock_lock (__libc_utmp_lock); |
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| 48 | |
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| 49 | retval = __libc_getutid_r (id, buffer, result); |
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| 50 | |
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| 51 | __libc_lock_unlock (__libc_utmp_lock); |
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| 52 | |
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| 53 | return retval; |
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| 54 | } |
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| 55 | libc_hidden_def (__getutid_r) |
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| 56 | weak_alias (__getutid_r, getutid_r) |
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| 57 | |
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