1 | /* Copyright (C) 2002-2020 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <dlfcn.h> |
20 | #include <pthreadP.h> |
21 | #include <signal.h> |
22 | #include <stdlib.h> |
23 | |
24 | #include <shlib-compat.h> |
25 | #include <atomic.h> |
26 | #include <safe-fatal.h> |
27 | |
28 | |
29 | /* Pointers to the libc functions. */ |
30 | struct pthread_functions __libc_pthread_functions attribute_hidden; |
31 | int __libc_pthread_functions_init attribute_hidden; |
32 | |
33 | |
34 | #define FORWARD2(name, rettype, decl, params, defaction) \ |
35 | rettype \ |
36 | name decl \ |
37 | { \ |
38 | if (!__libc_pthread_functions_init) \ |
39 | defaction; \ |
40 | \ |
41 | return PTHFCT_CALL (ptr_##name, params); \ |
42 | } |
43 | |
44 | /* Same as FORWARD2, only without return. */ |
45 | #define FORWARD_NORETURN(name, rettype, decl, params, defaction) \ |
46 | rettype \ |
47 | name decl \ |
48 | { \ |
49 | if (!__libc_pthread_functions_init) \ |
50 | defaction; \ |
51 | \ |
52 | PTHFCT_CALL (ptr_##name, params); \ |
53 | } |
54 | |
55 | #define FORWARD(name, decl, params, defretval) \ |
56 | FORWARD2 (name, int, decl, params, return defretval) |
57 | |
58 | |
59 | FORWARD (pthread_attr_getschedpolicy, |
60 | (const pthread_attr_t *attr, int *policy), (attr, policy), 0) |
61 | FORWARD (pthread_attr_setschedpolicy, (pthread_attr_t *attr, int policy), |
62 | (attr, policy), 0) |
63 | |
64 | FORWARD (pthread_attr_getscope, |
65 | (const pthread_attr_t *attr, int *scope), (attr, scope), 0) |
66 | FORWARD (pthread_attr_setscope, (pthread_attr_t *attr, int scope), |
67 | (attr, scope), 0) |
68 | |
69 | |
70 | FORWARD (pthread_condattr_destroy, (pthread_condattr_t *attr), (attr), 0) |
71 | FORWARD (pthread_condattr_init, (pthread_condattr_t *attr), (attr), 0) |
72 | |
73 | #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) |
74 | FORWARD2 (__pthread_cond_broadcast_2_0, int attribute_compat_text_section, |
75 | (pthread_cond_2_0_t *cond), (cond), return 0) |
76 | compat_symbol (libc, __pthread_cond_broadcast_2_0, pthread_cond_broadcast, |
77 | GLIBC_2_0); |
78 | #endif |
79 | FORWARD (__pthread_cond_broadcast, (pthread_cond_t *cond), (cond), 0) |
80 | versioned_symbol (libc, __pthread_cond_broadcast, pthread_cond_broadcast, |
81 | GLIBC_2_3_2); |
82 | |
83 | #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) |
84 | FORWARD2 (__pthread_cond_destroy_2_0, int attribute_compat_text_section, |
85 | (pthread_cond_2_0_t *cond), (cond), return 0) |
86 | compat_symbol (libc, __pthread_cond_destroy_2_0, pthread_cond_destroy, |
87 | GLIBC_2_0); |
88 | #endif |
89 | FORWARD (__pthread_cond_destroy, (pthread_cond_t *cond), (cond), 0) |
90 | versioned_symbol (libc, __pthread_cond_destroy, pthread_cond_destroy, |
91 | GLIBC_2_3_2); |
92 | |
93 | #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) |
94 | FORWARD2 (__pthread_cond_init_2_0, int attribute_compat_text_section, |
95 | (pthread_cond_2_0_t *cond, const pthread_condattr_t *cond_attr), |
96 | (cond, cond_attr), return 0) |
97 | compat_symbol (libc, __pthread_cond_init_2_0, pthread_cond_init, GLIBC_2_0); |
98 | #endif |
99 | FORWARD (__pthread_cond_init, |
100 | (pthread_cond_t *cond, const pthread_condattr_t *cond_attr), |
101 | (cond, cond_attr), 0) |
102 | versioned_symbol (libc, __pthread_cond_init, pthread_cond_init, GLIBC_2_3_2); |
103 | |
104 | #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) |
105 | FORWARD2 (__pthread_cond_signal_2_0, int attribute_compat_text_section, |
106 | (pthread_cond_2_0_t *cond), (cond), return 0) |
107 | compat_symbol (libc, __pthread_cond_signal_2_0, pthread_cond_signal, |
108 | GLIBC_2_0); |
109 | #endif |
110 | FORWARD (__pthread_cond_signal, (pthread_cond_t *cond), (cond), 0) |
111 | versioned_symbol (libc, __pthread_cond_signal, pthread_cond_signal, |
112 | GLIBC_2_3_2); |
113 | |
114 | #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) |
115 | FORWARD2 (__pthread_cond_wait_2_0, int attribute_compat_text_section, |
116 | (pthread_cond_2_0_t *cond, pthread_mutex_t *mutex), (cond, mutex), |
117 | return 0) |
118 | compat_symbol (libc, __pthread_cond_wait_2_0, pthread_cond_wait, |
119 | GLIBC_2_0); |
120 | #endif |
121 | FORWARD (__pthread_cond_wait, (pthread_cond_t *cond, pthread_mutex_t *mutex), |
122 | (cond, mutex), 0) |
123 | versioned_symbol (libc, __pthread_cond_wait, pthread_cond_wait, |
124 | GLIBC_2_3_2); |
125 | |
126 | #if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_3_2) |
127 | FORWARD2 (__pthread_cond_timedwait_2_0, int attribute_compat_text_section, |
128 | (pthread_cond_2_0_t *cond, pthread_mutex_t *mutex, |
129 | const struct timespec *abstime), (cond, mutex, abstime), |
130 | return 0) |
131 | compat_symbol (libc, __pthread_cond_timedwait_2_0, pthread_cond_timedwait, |
132 | GLIBC_2_0); |
133 | #endif |
134 | FORWARD (__pthread_cond_timedwait, |
135 | (pthread_cond_t *cond, pthread_mutex_t *mutex, |
136 | const struct timespec *abstime), (cond, mutex, abstime), 0) |
137 | versioned_symbol (libc, __pthread_cond_timedwait, pthread_cond_timedwait, |
138 | GLIBC_2_3_2); |
139 | |
140 | |
141 | FORWARD_NORETURN (__pthread_exit, void, (void *retval), (retval), |
142 | exit (EXIT_SUCCESS)) |
143 | strong_alias (__pthread_exit, pthread_exit); |
144 | |
145 | |
146 | FORWARD (pthread_getschedparam, |
147 | (pthread_t target_thread, int *policy, struct sched_param *param), |
148 | (target_thread, policy, param), 0) |
149 | FORWARD (pthread_setschedparam, |
150 | (pthread_t target_thread, int policy, |
151 | const struct sched_param *param), (target_thread, policy, param), 0) |
152 | |
153 | |
154 | FORWARD (pthread_mutex_destroy, (pthread_mutex_t *mutex), (mutex), 0) |
155 | |
156 | FORWARD (pthread_mutex_init, |
157 | (pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr), |
158 | (mutex, mutexattr), 0) |
159 | |
160 | FORWARD (pthread_mutex_lock, (pthread_mutex_t *mutex), (mutex), 0) |
161 | |
162 | FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0) |
163 | |
164 | FORWARD (__pthread_setcancelstate, (int state, int *oldstate), |
165 | (state, oldstate), 0) |
166 | strong_alias (__pthread_setcancelstate, pthread_setcancelstate) |
167 | |
168 | FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0) |
169 | |
170 | FORWARD_NORETURN (__pthread_unwind, |
171 | void attribute_hidden __attribute ((noreturn)) |
172 | __cleanup_fct_attribute attribute_compat_text_section, |
173 | (__pthread_unwind_buf_t *buf), (buf), |
174 | __safe_fatal ()) |
175 | |