xref: /netbsd-src/lib/libc/include/extern.h (revision 0e2e28bced52bda3788c857106bde6c44d2df3b8)
1 /*	$NetBSD: extern.h,v 1.29 2024/01/19 19:31:41 christos Exp $	*/
2 
3 /*
4  * Copyright (c) 1997 Christos Zoulas.  All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 
27 #include <stdarg.h>
28 #include <ucontext.h>
29 
30 #ifndef __LOCALE_T_DECLARED
31 typedef struct _locale		*locale_t;
32 #define __LOCALE_T_DECLARED
33 #endif /* __LOCALE_T_DECLARED */
34 
35 __BEGIN_DECLS
36 extern char *__minbrk;
37 extern sigset_t __sigintr;
38 extern char **environ;
39 int __getcwd(char *, size_t);
40 int __getlogin(char *, size_t);
41 int __setlogin(const char *);
42 int __posix_fadvise50(int, int, __off_t, __off_t, int);
43 void  __section(".text.startup") __attribute__((__visibility__("hidden")))
44     __libc_atomic_init(void);
45 void _resumecontext(void) __dead;
46 __dso_hidden int	_strerror_lr(int, char *, size_t, locale_t);
47 const char *__strerror(int , char *, size_t);
48 const char *__strsignal(int , char *, size_t);
49 char *__dtoa(double, int, int, int *, int *, char **);
50 void __freedtoa(char *);
51 int __sysctl(const int *, unsigned int, void *, size_t *, const void *, size_t);
52 
53 struct sigaction;
54 int __sigaction_sigtramp(int, const struct sigaction *,
55     struct sigaction *, const void *, int);
56 
57 /* is "long double" and "double" different? */
58 #if (__LDBL_MANT_DIG__ != __DBL_MANT_DIG__) || \
59     (__LDBL_MAX_EXP__ != __DBL_MAX_EXP__)
60 #define WIDE_DOUBLE
61 #endif
62 
63 #ifdef WIDE_DOUBLE
64 char *__hldtoa(long double, const char *, int, int *, int *,  char **);
65 char *__ldtoa(long double *, int, int, int *, int *, char **);
66 #endif
67 char *__hdtoa(double, const char *, int, int *, int *, char **);
68 
69 #ifndef __LIBC12_SOURCE__
70 struct syslog_data;
71 void	syslog_ss(int, struct syslog_data *, const char *, ...)
72     __RENAME(__syslog_ss60) __printflike(3, 4);
73 void    vsyslog_ss(int, struct syslog_data *, const char *, va_list)
74     __RENAME(__vsyslog_ss60) __printflike(3, 0);
75 void	syslogp_ss(int, struct syslog_data *, const char *, const char *,
76     const char *, ...) __RENAME(__syslogp_ss60) __printflike(5, 0);
77 void	vsyslogp_ss(int, struct syslog_data *, const char *, const char *,
78     const char *, va_list) __RENAME(__vsyslogp_ss60) __printflike(5, 0);
79 #endif
80 
81 void	_malloc_prefork(void);
82 void	_malloc_postfork(void);
83 void	_malloc_postfork_child(void);
84 
85 int	_sys_setcontext(const ucontext_t *);
86 
87 int	strerror_r_ss(int, char *, size_t);
88 __aconst char *strerror_ss(int);
89 
90 __END_DECLS
91