2 * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * Private definitions for libc, libc_r and libpthread.
35 #ifndef _LIBC_PRIVATE_H_
36 #define _LIBC_PRIVATE_H_
37 #include <sys/_pthreadtypes.h>
40 * This global flag is non-zero when a process has created one
41 * or more threads. It is used to avoid calling locking functions
42 * when they are not required.
44 extern int __isthreaded;
47 * libc should use libc_dlopen internally, which respects a global
48 * flag where loading of new shared objects can be restricted.
50 void *libc_dlopen(const char *, int);
55 void _rtld_error(const char *fmt, ...);
58 * File lock contention is difficult to diagnose without knowing
59 * where locks were set. Allow a debug library to be built which
60 * records the source file and line number of each lock call.
63 #define _FLOCKFILE(x) _flockfile_debug(x, __FILE__, __LINE__)
65 #define _FLOCKFILE(x) _flockfile(x)
69 * Macros for locking and unlocking FILEs. These test if the
70 * process is threaded to avoid locking when not required.
72 #define FLOCKFILE(fp) if (__isthreaded) _FLOCKFILE(fp)
73 #define FUNLOCKFILE(fp) if (__isthreaded) _funlockfile(fp)
76 * Indexes into the pthread jump table.
78 * Warning! If you change this type, you must also change the threads
79 * libraries that reference it (libc_r, libpthread).
84 PJT_ATTR_GETDETACHSTATE,
85 PJT_ATTR_GETGUARDSIZE,
86 PJT_ATTR_GETINHERITSCHED,
87 PJT_ATTR_GETSCHEDPARAM,
88 PJT_ATTR_GETSCHEDPOLICY,
90 PJT_ATTR_GETSTACKADDR,
91 PJT_ATTR_GETSTACKSIZE,
93 PJT_ATTR_SETDETACHSTATE,
94 PJT_ATTR_SETGUARDSIZE,
95 PJT_ATTR_SETINHERITSCHED,
96 PJT_ATTR_SETSCHEDPARAM,
97 PJT_ATTR_SETSCHEDPOLICY,
99 PJT_ATTR_SETSTACKADDR,
100 PJT_ATTR_SETSTACKSIZE,
119 PJT_MUTEXATTR_DESTROY,
121 PJT_MUTEXATTR_SETTYPE,
131 PJT_RWLOCK_TRYRDLOCK,
132 PJT_RWLOCK_TRYWRLOCK,
142 PJT_CLEANUP_PUSH_IMP,
148 typedef int (*pthread_func_t)(void);
149 typedef pthread_func_t pthread_func_entry_t[2];
151 extern pthread_func_entry_t __thr_jtable[];
154 * yplib internal interfaces
157 int _yp_check(char **);
161 * Initialise TLS for static programs
163 void _init_tls(void);
166 * Provides pthread_once()-like functionality for both single-threaded
167 * and multi-threaded applications.
169 int _once(pthread_once_t *, void (*)(void));
172 * Set the TLS thread pointer
174 void _set_tp(void *tp);
177 * This is a pointer in the C run-time startup code. It is used
178 * by getprogname() and setprogname().
180 extern const char *__progname;
183 * This function is used by the threading libraries to notify malloc that a
186 void _malloc_thread_cleanup(void);
189 * These functions are used by the threading libraries in order to protect
190 * malloc across fork().
192 void _malloc_prefork(void);
193 void _malloc_postfork(void);
196 * Function to clean up streams, called from abort() and exit().
198 extern void (*__cleanup)(void);
201 * Get kern.osreldate to detect ABI revisions. Explicitly
202 * ignores value of $OSVERSION and caches result. Prototypes
203 * for the wrapped "new" pad-less syscalls are here for now.
205 extern int __getosreldate(void);
206 #include <sys/_types.h>
208 extern __off_t __sys_lseek(int, __off_t, int);
209 extern int __sys_ftruncate(int, __off_t);
210 extern int __sys_truncate(const char *, __off_t);
211 extern __ssize_t __sys_pread(int, void *, __size_t, __off_t);
212 extern __ssize_t __sys_pwrite(int, const void *, __size_t, __off_t);
213 extern void * __sys_mmap(void *, __size_t, int, int, int, __off_t);
216 extern __off_t __sys_freebsd6_lseek(int, int, __off_t, int);
217 extern int __sys_freebsd6_ftruncate(int, int, __off_t);
218 extern int __sys_freebsd6_truncate(const char *, int, __off_t);
219 extern __ssize_t __sys_freebsd6_pread(int, void *, __size_t, int, __off_t);
220 extern __ssize_t __sys_freebsd6_pwrite(int, const void *, __size_t, int, __off_t);
221 extern void * __sys_freebsd6_mmap(void *, __size_t, int, int, int, int, __off_t);
223 /* Without back-compat translation */
224 extern int __sys_fcntl(int, int, ...);
226 /* execve() with PATH processing to implement posix_spawnp() */
227 int _execvpe(const char *, char * const *, char * const *);
229 int _elf_aux_info(int aux, void *buf, int buflen);
231 int __elf_phdr_match_addr(struct dl_phdr_info *, void *);
233 void _pthread_cancel_enter(int);
234 void _pthread_cancel_leave(int);
236 #endif /* _LIBC_PRIVATE_H_ */