1 /* Copyright (C) 1996,1997,1998,2000,2001 Free Software Foundation, Inc.
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.
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.
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.
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. */
21 #include <bits/libc-lock.h>
25 #include "utmp-private.h"
28 /* Functions defined here. */
29 static int setutent_unknown (void);
30 static int getutent_r_unknown (struct utmp *buffer, struct utmp **result);
31 static int getutid_r_unknown (const struct utmp *line, struct utmp *buffer,
32 struct utmp **result);
33 static int getutline_r_unknown (const struct utmp *id, struct utmp *buffer,
34 struct utmp **result);
35 static struct utmp *pututline_unknown (const struct utmp *data);
36 static void endutent_unknown (void);
38 /* Initial Jump table. */
39 struct utfuncs __libc_utmp_unknown_functions =
50 /* Currently selected backend. */
51 struct utfuncs *__libc_utmp_jump_table = &__libc_utmp_unknown_functions;
53 /* We need to protect the opening of the file. */
54 __libc_lock_define_initialized (, __libc_utmp_lock)
58 setutent_unknown (void)
62 result = (*__libc_utmp_file_functions.setutent) ();
64 __libc_utmp_jump_table = &__libc_utmp_file_functions;
71 getutent_r_unknown (struct utmp *buffer, struct utmp **result)
73 /* The backend was not yet initialized. */
74 if (setutent_unknown ())
75 return (*__libc_utmp_jump_table->getutent_r) (buffer, result);
84 getutid_r_unknown (const struct utmp *id, struct utmp *buffer,
87 /* The backend was not yet initialized. */
88 if (setutent_unknown ())
89 return (*__libc_utmp_jump_table->getutid_r) (id, buffer, result);
98 getutline_r_unknown (const struct utmp *line, struct utmp *buffer,
101 /* The backend was not yet initialized. */
102 if (setutent_unknown ())
103 return (*__libc_utmp_jump_table->getutline_r) (line, buffer, result);
112 pututline_unknown (const struct utmp *data)
114 /* The backend was not yet initialized. */
115 if (setutent_unknown ())
116 return (*__libc_utmp_jump_table->pututline) (data);
124 endutent_unknown (void)
133 __libc_lock_lock (__libc_utmp_lock);
135 (*__libc_utmp_jump_table->setutent) ();
137 __libc_lock_unlock (__libc_utmp_lock);
139 weak_alias (__setutent, setutent)
143 __getutent_r (struct utmp *buffer, struct utmp **result)
147 __libc_lock_lock (__libc_utmp_lock);
149 retval = (*__libc_utmp_jump_table->getutent_r) (buffer, result);
151 __libc_lock_unlock (__libc_utmp_lock);
155 weak_alias (__getutent_r, getutent_r)
159 __pututline (const struct utmp *data)
163 __libc_lock_lock (__libc_utmp_lock);
165 buffer = (*__libc_utmp_jump_table->pututline) (data);
167 __libc_lock_unlock (__libc_utmp_lock);
171 weak_alias (__pututline, pututline)
177 __libc_lock_lock (__libc_utmp_lock);
179 (*__libc_utmp_jump_table->endutent) ();
180 __libc_utmp_jump_table = &__libc_utmp_unknown_functions;
182 __libc_lock_unlock (__libc_utmp_lock);
184 weak_alias (__endutent, endutent)