/* Copyright (C) 1996-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com> and Paul Janzen <pcj@primenet.com>, 1996. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <libc-lock.h> #include <errno.h> #include <stdlib.h> #include <utmp.h> #include "utmp-private.h" /* We have to use the lock in getutent_r.c. */ __libc_lock_define (extern, __libc_utmp_lock attribute_hidden) int __getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result) { #if (_HAVE_UT_ID - 0) && (_HAVE_UT_TYPE - 0) int retval; /* Test whether ID has any of the legal types. */ if (id->ut_type != RUN_LVL && id->ut_type != BOOT_TIME && id->ut_type != OLD_TIME && id->ut_type != NEW_TIME && id->ut_type != INIT_PROCESS && id->ut_type != LOGIN_PROCESS && id->ut_type != USER_PROCESS && id->ut_type != DEAD_PROCESS) /* No, using '<' and '>' for the test is not possible. */ { __set_errno (EINVAL); *result = NULL; return -1; } __libc_lock_lock (__libc_utmp_lock); retval = (*__libc_utmp_jump_table->getutid_r) (id, buffer, result); __libc_lock_unlock (__libc_utmp_lock); return retval; #else /* !_HAVE_UT_ID && !_HAVE_UT_TYPE */ __set_errno (ENOSYS); return -1; #endif } weak_alias (__getutid_r, getutid_r)