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 extern struct _spinlock __stdio_thread_lock;
77 #define STDIO_THREAD_LOCK() \
80 _SPINLOCK(&__stdio_thread_lock); \
82 #define STDIO_THREAD_UNLOCK() \
85 _SPINUNLOCK(&__stdio_thread_lock); \
89 * Indexes into the pthread jump table.
91 * Warning! If you change this type, you must also change the threads
92 * libraries that reference it (libc_r, libpthread).
97 PJT_ATTR_GETDETACHSTATE,
98 PJT_ATTR_GETGUARDSIZE,
99 PJT_ATTR_GETINHERITSCHED,
100 PJT_ATTR_GETSCHEDPARAM,
101 PJT_ATTR_GETSCHEDPOLICY,
103 PJT_ATTR_GETSTACKADDR,
104 PJT_ATTR_GETSTACKSIZE,
106 PJT_ATTR_SETDETACHSTATE,
107 PJT_ATTR_SETGUARDSIZE,
108 PJT_ATTR_SETINHERITSCHED,
109 PJT_ATTR_SETSCHEDPARAM,
110 PJT_ATTR_SETSCHEDPOLICY,
112 PJT_ATTR_SETSTACKADDR,
113 PJT_ATTR_SETSTACKSIZE,
132 PJT_MUTEXATTR_DESTROY,
134 PJT_MUTEXATTR_SETTYPE,
144 PJT_RWLOCK_TRYRDLOCK,
145 PJT_RWLOCK_TRYWRLOCK,
157 typedef int (*pthread_func_t)(void);
158 typedef pthread_func_t pthread_func_entry_t[2];
160 extern pthread_func_entry_t __thr_jtable[];
163 * yplib internal interfaces
166 int _yp_check(char **);
170 * Initialise TLS for static programs
172 void _init_tls(void);
175 * Provides pthread_once()-like functionality for both single-threaded
176 * and multi-threaded applications.
178 int _once(pthread_once_t *, void (*)(void));
181 * Set the TLS thread pointer
183 void _set_tp(void *tp);
186 * This is a pointer in the C run-time startup code. It is used
187 * by getprogname() and setprogname().
189 extern const char *__progname;
192 * This function is used by the threading libraries to notify malloc that a
195 void _malloc_thread_cleanup(void);
198 * These functions are used by the threading libraries in order to protect
199 * malloc across fork().
201 void _malloc_prefork(void);
202 void _malloc_postfork(void);
205 * Function to clean up streams, called from abort() and exit().
207 extern void (*__cleanup)(void);
210 * Get kern.osreldate to detect ABI revisions. Explicitly
211 * ignores value of $OSVERSION and caches result. Prototypes
212 * for the wrapped "new" pad-less syscalls are here for now.
214 extern int __getosreldate(void);
215 #include <sys/_types.h>
217 extern __off_t __sys_lseek(int, __off_t, int);
218 extern int __sys_ftruncate(int, __off_t);
219 extern int __sys_truncate(const char *, __off_t);
220 extern __ssize_t __sys_pread(int, void *, __size_t, __off_t);
221 extern __ssize_t __sys_pwrite(int, const void *, __size_t, __off_t);
222 extern void * __sys_mmap(void *, __size_t, int, int, int, __off_t);
225 extern __off_t __sys_freebsd6_lseek(int, int, __off_t, int);
226 extern int __sys_freebsd6_ftruncate(int, int, __off_t);
227 extern int __sys_freebsd6_truncate(const char *, int, __off_t);
228 extern __ssize_t __sys_freebsd6_pread(int, void *, __size_t, int, __off_t);
229 extern __ssize_t __sys_freebsd6_pwrite(int, const void *, __size_t, int, __off_t);
230 extern void * __sys_freebsd6_mmap(void *, __size_t, int, int, int, int, __off_t);
232 /* Without back-compat translation */
233 extern int __sys_fcntl(int, int, ...);
235 /* execve() with PATH processing to implement posix_spawnp() */
236 int _execvpe(const char *, char * const *, char * const *);
239 int __elf_phdr_match_addr(struct dl_phdr_info *, void *);
241 #endif /* _LIBC_PRIVATE_H_ */