1*228d8c9eSBrooks Davis /*
2*228d8c9eSBrooks Davis * Copyright (c) 2014 The FreeBSD Foundation.
3*228d8c9eSBrooks Davis *
4*228d8c9eSBrooks Davis * Portions of this software were developed by Konstantin Belousov
5*228d8c9eSBrooks Davis * under sponsorship from the FreeBSD Foundation.
6*228d8c9eSBrooks Davis *
7*228d8c9eSBrooks Davis * Redistribution and use in source and binary forms, with or without
8*228d8c9eSBrooks Davis * modification, are permitted provided that the following conditions
9*228d8c9eSBrooks Davis * are met:
10*228d8c9eSBrooks Davis * 1. Redistributions of source code must retain the above copyright
11*228d8c9eSBrooks Davis * notice(s), this list of conditions and the following disclaimer as
12*228d8c9eSBrooks Davis * the first lines of this file unmodified other than the possible
13*228d8c9eSBrooks Davis * addition of one or more copyright notices.
14*228d8c9eSBrooks Davis * 2. Redistributions in binary form must reproduce the above copyright
15*228d8c9eSBrooks Davis * notice(s), this list of conditions and the following disclaimer in
16*228d8c9eSBrooks Davis * the documentation and/or other materials provided with the
17*228d8c9eSBrooks Davis * distribution.
18*228d8c9eSBrooks Davis *
19*228d8c9eSBrooks Davis * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
20*228d8c9eSBrooks Davis * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21*228d8c9eSBrooks Davis * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*228d8c9eSBrooks Davis * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
23*228d8c9eSBrooks Davis * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*228d8c9eSBrooks Davis * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*228d8c9eSBrooks Davis * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
26*228d8c9eSBrooks Davis * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27*228d8c9eSBrooks Davis * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
28*228d8c9eSBrooks Davis * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
29*228d8c9eSBrooks Davis * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30*228d8c9eSBrooks Davis */
31*228d8c9eSBrooks Davis
32*228d8c9eSBrooks Davis #include <sys/types.h>
33*228d8c9eSBrooks Davis #include <stddef.h>
34*228d8c9eSBrooks Davis #include "libc_private.h"
35*228d8c9eSBrooks Davis
36*228d8c9eSBrooks Davis #define SLOT(a, b) \
37*228d8c9eSBrooks Davis [INTERPOS_##a] = (interpos_func_t)b
38*228d8c9eSBrooks Davis interpos_func_t __libc_interposing[INTERPOS_MAX] = {
39*228d8c9eSBrooks Davis SLOT(system, __libc_system),
40*228d8c9eSBrooks Davis SLOT(tcdrain, __libc_tcdrain),
41*228d8c9eSBrooks Davis SLOT(_pthread_mutex_init_calloc_cb, _pthread_mutex_init_calloc_cb_stub),
42*228d8c9eSBrooks Davis SLOT(spinlock, __libc_spinlock_stub),
43*228d8c9eSBrooks Davis SLOT(spinunlock, __libc_spinunlock_stub),
44*228d8c9eSBrooks Davis SLOT(map_stacks_exec, __libc_map_stacks_exec),
45*228d8c9eSBrooks Davis SLOT(distribute_static_tls, __libc_distribute_static_tls),
46*228d8c9eSBrooks Davis };
47*228d8c9eSBrooks Davis #undef SLOT
48*228d8c9eSBrooks Davis
49*228d8c9eSBrooks Davis interpos_func_t *
__libc_interposing_slot(int interposno)50*228d8c9eSBrooks Davis __libc_interposing_slot(int interposno)
51*228d8c9eSBrooks Davis {
52*228d8c9eSBrooks Davis if (__libc_interposing[interposno] == NULL)
53*228d8c9eSBrooks Davis return (__libsys_interposing_slot(interposno));
54*228d8c9eSBrooks Davis return (&__libc_interposing[interposno]);
55*228d8c9eSBrooks Davis }
56