glibc/login/getutent_r.c
Florian Weimer b90aefd4ac login: Remove utmp backend jump tables [BZ #23518]
There is just one file-based implementation, so this dispatch
mechanism is unnecessary.  Instead of the vtable pointer
__libc_utmp_jump_table, use a non-negative file_fd as the indicator
that the backend is initialized.

(cherry picked from commit 1a7fe2ebe5)
2020-01-17 13:54:07 +01:00

86 lines
2.0 KiB
C

/* Copyright (C) 1996-2019 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 <stdlib.h>
#include <utmp.h>
#include "utmp-private.h"
/* We need to protect the opening of the file. */
__libc_lock_define_initialized (, __libc_utmp_lock attribute_hidden)
void
__setutent (void)
{
__libc_lock_lock (__libc_utmp_lock);
__libc_setutent ();
__libc_lock_unlock (__libc_utmp_lock);
}
weak_alias (__setutent, setutent)
int
__getutent_r (struct utmp *buffer, struct utmp **result)
{
int retval;
__libc_lock_lock (__libc_utmp_lock);
retval = __libc_getutent_r (buffer, result);
__libc_lock_unlock (__libc_utmp_lock);
return retval;
}
libc_hidden_def (__getutent_r)
weak_alias (__getutent_r, getutent_r)
struct utmp *
__pututline (const struct utmp *data)
{
struct utmp *buffer;
__libc_lock_lock (__libc_utmp_lock);
buffer = __libc_pututline (data);
__libc_lock_unlock (__libc_utmp_lock);
return buffer;
}
libc_hidden_def (__pututline)
weak_alias (__pututline, pututline)
void
__endutent (void)
{
__libc_lock_lock (__libc_utmp_lock);
__libc_endutent ();
__libc_lock_unlock (__libc_utmp_lock);
}
weak_alias (__endutent, endutent)