1 /*-
2  * Copyright (c) 2014 Landon Fuller <landon@landonf.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer
10  *    in this position and unchanged.
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(S) ``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(S) 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 #ifndef _BSD_COMPAT_H
28 #define _BSD_COMPAT_H
29 
30 #include "pkg_config.h"
31 
32 #ifdef __OpenBSD__
33  #include "../external/libelf/_elftc.h"
34 
35  #ifndef EPROTO
36   #define EPROTO EINTR
37  #endif
38 #endif
39 
40 #ifdef HAVE_BSD_SYS_CDEFS_H
41 
42 /* Deal with broken __DECONST */
43 #ifndef __uintptr_t
44 # include <stdint.h>
45 # define __uintptr_t uintptr_t
46 #endif
47 
48 #include <bsd/sys/cdefs.h>
49 #endif
50 
51 #ifdef HAVE_BSD_STDLIB_H
52 #include <bsd/stdlib.h>
53 #endif
54 
55 #ifdef HAVE_BSD_UNISTD_H
56 #include <bsd/unistd.h>
57 #endif
58 
59 #ifdef HAVE_BSD_STRING_H
60 #include <bsd/string.h>
61 #endif
62 
63 #ifdef HAVE_BSD_STDIO_H
64 #include <bsd/stdio.h>
65 #endif
66 
67 #ifdef HAVE_BSD_STLIB_H
68 #include <bsd/stdlib.h>
69 #endif
70 
71 #ifdef HAVE_BSD_ERR_H
72 #include <bsd/err.h>
73 #endif
74 
75 #ifdef HAVE_BSD_LIBUTIL_H
76 #include <bsd/libutil.h>
77 #endif
78 
79 #include <sys/stat.h>
80 #include "endian_util.h"
81 
82 #if !HAVE_EACCESS
83 #define eaccess(_p, _m) access(_p, _m)
84 #endif
85 
86 #if !HAVE_HUMANIZE_NUMBER
87 #include "humanize_number.h"
88 #endif
89 
90 #if !HAVE_CLOSEFROM
91 void closefrom(int lowfd);
92 #endif
93 
94 #ifndef AT_FDCWD
95 #define AT_FDCWD		-100
96 #endif
97 
98 #ifndef AT_EACCESS
99 #define AT_EACCESS		0x100
100 #endif
101 
102 #ifndef AT_SYMLINK_NOFOLLOW
103 #define	AT_SYMLINK_NOFOLLOW	0x200
104 #endif
105 
106 #if !HAVE_FACCESSAT
107 int faccessat(int fd, const char *path, int mode, int flag);
108 #endif
109 
110 #if !HAVE_FSTATAT
111 int fstatat(int fd, const char *path, struct stat *buf, int flag);
112 #endif
113 
114 #if !HAVE_OPENAT
115 int openat(int fd, const char *path, int flags, ...);
116 #endif
117 
118 #if !HAVE_READLINKAT
119 ssize_t readlinkat(int fd, const char *restrict path, char *restrict buf, size_t bufsize);
120 #endif
121 
122 #if !HAVE_UNLINKAT
123 # ifndef AT_REMOVEDIR
124 #  define AT_REMOVEDIR	0x800
125 # endif
126 int unlinkat(int fd, const char *path, int flag);
127 #endif
128 
129 #if !HAVE_STRTONUM
130 long long strtonum(const char *, long long, long long, const char **);
131 #endif
132 
133 #if !HAVE_STRNSTR
134 char * strnstr(const char *s, const char *find, size_t slen);
135 #endif
136 
137 #ifndef _PATH_GROUP
138 #define _PATH_GROUP "/etc/group"
139 #endif
140 
141 #ifndef __FBSDID
142 #define __FBSDID(x)
143 #endif
144 
145 #ifndef EAUTH
146 #define EAUTH 80
147 #endif
148 
149 #ifndef ENEEDAUTH
150 #define ENEEDAUTH 81
151 #endif
152 
153 #ifndef MAXLOGNAME
154 #define MAXLOGNAME 33
155 #endif
156 
157 #ifndef __DECONST
158 #define __DECONST(type, var)    ((type)(uintptr_t)(const void *)(var))
159 #endif
160 
161 #ifndef __unused
162 #ifdef __GNUC__
163 # define __unused __attribute__((__unused__))
164 #else
165 # define __unused
166 #endif
167 #endif
168 
169 #ifndef __unreachable
170 # if defined(__GNUC__) && ((__GNUC__ >= 4) && (__GNUC_MINOR__ >= 6))
171 #  define __unreachable() __builtin_unreachable()
172 # elif defined(__clang__)
173 #  if __has_builtin(__builtin_unreachable)
174 #   define __unreachable() __builtin_unreachable()
175 #  endif
176 # else
177 #  define __unreachable() ((void)0)
178 # endif
179 #endif
180 
181 #if !HAVE_FUNOPEN
182 #if !HAVE_FOPENCOOKIE
183 # error "Your system has neither funopen nor fopencookie, cannot continue"
184 #endif
185 FILE * funopen(const void *cookie, int (*readfn)(void *, char *, int),
186          int (*writefn)(void *, const char *, int),
187          off_t (*seekfn)(void *, off_t, int), int (*closefn)(void *));
188 #endif
189 
190 #if !HAVE_GETPROGNAME
191 #ifdef __GLIBC__
192 extern char *program_invocation_short_name;
193 # define getprogname() program_invocation_short_name
194 #else
195 # error "Don't know how to replace getprogname()"
196 #endif
197 #endif
198 
199 #endif
200