1 /*
2 * Copyright (c) 2004
3 * Herbert Xu <herbert@gondor.apana.org.au>. 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 * 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. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <limits.h>
30 #include <signal.h>
31 #include <sys/types.h>
32
33 #ifndef SSIZE_MAX
34 #define SSIZE_MAX ((ssize_t)((size_t)-1 >> 1))
35 #endif
36
sigclearmask(void)37 static inline void sigclearmask(void)
38 {
39 #ifdef HAVE_SIGSETMASK
40 sigsetmask(0);
41 #else
42 sigset_t set;
43 sigemptyset(&set);
44 sigprocmask(SIG_SETMASK, &set, 0);
45 #endif
46 }
47
48 #ifndef HAVE_MEMPCPY
49 void *mempcpy(void *, const void *, size_t);
50 #endif
51
52 #ifndef HAVE_STPCPY
53 char *stpcpy(char *, const char *);
54 #endif
55
56 #ifndef HAVE_STRCHRNUL
57 char *strchrnul(const char *, int);
58 #endif
59
60 #ifndef HAVE_STRSIGNAL
61 char *strsignal(int);
62 #endif
63
64 #ifndef HAVE_STRTOD
strtod(const char * nptr,char ** endptr)65 static inline double strtod(const char *nptr, char **endptr)
66 {
67 *endptr = (char *)nptr;
68 return 0;
69 }
70 #endif
71
72 #ifndef HAVE_STRTOIMAX
73 #define strtoimax strtoll
74 #endif
75
76 #ifndef HAVE_STRTOUMAX
77 #define strtoumax strtoull
78 #endif
79
80 #ifndef HAVE_BSEARCH
81 void *bsearch(const void *, const void *, size_t, size_t,
82 int (*)(const void *, const void *));
83 #endif
84
85 #ifndef HAVE_KILLPG
killpg(pid_t pid,int signal)86 static inline int killpg(pid_t pid, int signal)
87 {
88 #ifdef DEBUG
89 if (pid < 0)
90 abort();
91 #endif
92 return kill(-pid, signal);
93 }
94 #endif
95
96 #ifndef HAVE_SYSCONF
97 #define _SC_CLK_TCK 2
98 long sysconf(int) __attribute__((__noreturn__));
99 #endif
100
101 #if !HAVE_DECL_ISBLANK
102 int isblank(int c);
103 #endif
104
105 /*
106 * A trick to suppress uninitialized variable warning without generating any
107 * code
108 */
109 #define uninitialized_var(x) x = x
110